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|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>libmpcdec: src/mpc_decoder.c Source File</title>
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<a class="el" href="dir_000002.html">src</a></div>
<h1>mpc_decoder.c</h1><a href="mpc__decoder_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (c) 2005, The Musepack Development Team</span>
<a name="l00003"></a>00003 <span class="comment"> All rights reserved.</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment"> Redistribution and use in source and binary forms, with or without</span>
<a name="l00006"></a>00006 <span class="comment"> modification, are permitted provided that the following conditions are</span>
<a name="l00007"></a>00007 <span class="comment"> met:</span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment"> * Redistributions of source code must retain the above copyright</span>
<a name="l00010"></a>00010 <span class="comment"> notice, this list of conditions and the following disclaimer.</span>
<a name="l00011"></a>00011 <span class="comment"></span>
<a name="l00012"></a>00012 <span class="comment"> * Redistributions in binary form must reproduce the above</span>
<a name="l00013"></a>00013 <span class="comment"> copyright notice, this list of conditions and the following</span>
<a name="l00014"></a>00014 <span class="comment"> disclaimer in the documentation and/or other materials provided</span>
<a name="l00015"></a>00015 <span class="comment"> with the distribution.</span>
<a name="l00016"></a>00016 <span class="comment"></span>
<a name="l00017"></a>00017 <span class="comment"> * Neither the name of the The Musepack Development Team nor the</span>
<a name="l00018"></a>00018 <span class="comment"> names of its contributors may be used to endorse or promote</span>
<a name="l00019"></a>00019 <span class="comment"> products derived from this software without specific prior</span>
<a name="l00020"></a>00020 <span class="comment"> written permission.</span>
<a name="l00021"></a>00021 <span class="comment"></span>
<a name="l00022"></a>00022 <span class="comment"> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span>
<a name="l00023"></a>00023 <span class="comment"> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span>
<a name="l00024"></a>00024 <span class="comment"> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span>
<a name="l00025"></a>00025 <span class="comment"> A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span>
<a name="l00026"></a>00026 <span class="comment"> OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<a name="l00027"></a>00027 <span class="comment"> SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span>
<a name="l00028"></a>00028 <span class="comment"> LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span>
<a name="l00029"></a>00029 <span class="comment"> DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span>
<a name="l00030"></a>00030 <span class="comment"> THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span>
<a name="l00031"></a>00031 <span class="comment"> (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span>
<a name="l00032"></a>00032 <span class="comment"> OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00033"></a>00033 <span class="comment">*/</span>
<a name="l00034"></a>00034
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="preprocessor">#include <<a class="code" href="mpcdec_8h.html">mpcdec/mpcdec.h</a>></span>
<a name="l00039"></a>00039 <span class="preprocessor">#include <<a class="code" href="internal_8h.html">mpcdec/internal.h</a>></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <<a class="code" href="requant_8h.html">mpcdec/requant.h</a>></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <<a class="code" href="huffman_8h.html">mpcdec/huffman.h</a>></span>
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="comment">//------------------------------------------------------------------------------</span>
<a name="l00044"></a>00044 <span class="comment">// types</span>
<a name="l00045"></a>00045 <span class="comment">//------------------------------------------------------------------------------</span>
<a name="l00046"></a>00046 <span class="keyword">enum</span>
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 EQ_TAP = 13, <span class="comment">// length of FIR filter for EQ</span>
<a name="l00049"></a>00049 DELAY = ((EQ_TAP + 1) / 2), <span class="comment">// delay of FIR</span>
<a name="l00050"></a>00050 FIR_BANDS = 4, <span class="comment">// number of subbands to be FIR filtered</span>
<a name="l00051"></a>00051 MEMSIZE = MPC_DECODER_MEMSIZE, <span class="comment">// overall buffer size</span>
<a name="l00052"></a>00052 MEMSIZE2 = (MEMSIZE/2), <span class="comment">// size of one buffer</span>
<a name="l00053"></a>00053 MEMMASK = (MEMSIZE-1)
<a name="l00054"></a>00054 };
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="comment">//------------------------------------------------------------------------------</span>
<a name="l00057"></a>00057 <span class="comment">// forward declarations</span>
<a name="l00058"></a>00058 <span class="comment">//------------------------------------------------------------------------------</span>
<a name="l00059"></a>00059 <span class="keywordtype">void</span> <a class="code" href="huffman_8h.html#a2">mpc_decoder_init_huffman_sv6</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d);
<a name="l00060"></a>00060 <span class="keywordtype">void</span> <a class="code" href="huffman_8h.html#a4">mpc_decoder_init_huffman_sv7</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d);
<a name="l00061"></a>00061 <span class="keywordtype">void</span> <a class="code" href="mpc__decoder_8c.html#a10">mpc_decoder_read_bitstream_sv6</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d);
<a name="l00062"></a>00062 <span class="keywordtype">void</span> <a class="code" href="mpc__decoder_8c.html#a11">mpc_decoder_read_bitstream_sv7</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d);
<a name="l00063"></a>00063 <span class="keywordtype">void</span> <a class="code" href="mpc__decoder_8c.html#a12">mpc_decoder_update_buffer</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_uint32_t RING);
<a name="l00064"></a>00064 mpc_bool_t <a class="code" href="mpcdec_8h.html#a19">mpc_decoder_seek_sample</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_int64_t destsample);
<a name="l00065"></a>00065 <span class="keywordtype">void</span> <a class="code" href="mpc__decoder_8c.html#a14">mpc_decoder_requantisierung</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <span class="keyword">const</span> mpc_int32_t Last_Band);
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="comment">//------------------------------------------------------------------------------</span>
<a name="l00068"></a>00068 <span class="comment">// utility functions</span>
<a name="l00069"></a>00069 <span class="comment">//------------------------------------------------------------------------------</span>
<a name="l00070"></a>00070 <span class="keyword">static</span> mpc_int32_t f_read(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <span class="keywordtype">void</span> *ptr, size_t size)
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="keywordflow">return</span> d-><a class="code" href="structmpc__decoder__t.html#o0">r</a>-><a class="code" href="structmpc__reader__t.html#o0">read</a>(d-><a class="code" href="structmpc__decoder__t.html#o0">r</a>-><a class="code" href="structmpc__reader__t.html#o5">data</a>, ptr, size);
<a name="l00073"></a>00073 };
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="keyword">static</span> mpc_bool_t f_seek(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_int32_t offset)
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 <span class="keywordflow">return</span> d-><a class="code" href="structmpc__decoder__t.html#o0">r</a>-><a class="code" href="structmpc__reader__t.html#o1">seek</a>(d-><a class="code" href="structmpc__decoder__t.html#o0">r</a>-><a class="code" href="structmpc__reader__t.html#o5">data</a>, offset);
<a name="l00078"></a>00078 };
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="keyword">static</span> mpc_int32_t f_read_dword(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_uint32_t * ptr, mpc_uint32_t count)
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 count = f_read(d, ptr, count << 2) >> 2;
<a name="l00083"></a>00083 <span class="preprocessor">#ifndef MPC_LITTLE_ENDIAN</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span> mpc_uint32_t n;
<a name="l00085"></a>00085 <span class="keywordflow">for</span>(n = 0; n< count; n++) {
<a name="l00086"></a>00086 ptr[n] = mpc_swap32(ptr[n]);
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088 <span class="preprocessor">#endif</span>
<a name="l00089"></a>00089 <span class="preprocessor"></span> <span class="keywordflow">return</span> count;
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="comment">//------------------------------------------------------------------------------</span>
<a name="l00093"></a>00093 <span class="comment">// huffman & bitstream functions</span>
<a name="l00094"></a>00094 <span class="comment">//------------------------------------------------------------------------------</span>
<a name="l00095"></a>00095 <span class="keyword">static</span> <span class="keyword">const</span> mpc_uint32_t mask [33] = {
<a name="l00096"></a>00096 0x00000000, 0x00000001, 0x00000003, 0x00000007,
<a name="l00097"></a>00097 0x0000000F, 0x0000001F, 0x0000003F, 0x0000007F,
<a name="l00098"></a>00098 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF,
<a name="l00099"></a>00099 0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF,
<a name="l00100"></a>00100 0x0000FFFF, 0x0001FFFF, 0x0003FFFF, 0x0007FFFF,
<a name="l00101"></a>00101 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF,
<a name="l00102"></a>00102 0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF,
<a name="l00103"></a>00103 0x0FFFFFFF, 0x1FFFFFFF, 0x3FFFFFFF, 0x7FFFFFFF,
<a name="l00104"></a>00104 0xFFFFFFFF
<a name="l00105"></a>00105 };
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="comment">/* F U N C T I O N S */</span>
<a name="l00108"></a>00108
<a name="l00109"></a>00109 <span class="comment">// resets bitstream decoding</span>
<a name="l00110"></a>00110 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00111"></a>00111 mpc_decoder_reset_bitstream_decode(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d)
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = 0;
<a name="l00114"></a>00114 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> = 0;
<a name="l00115"></a>00115 d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = 0;
<a name="l00116"></a>00116 d-><a class="code" href="structmpc__decoder__t.html#z0_18">WordsRead</a> = 0;
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="comment">// reports the number of read bits</span>
<a name="l00120"></a>00120 <span class="keyword">static</span> mpc_uint32_t
<a name="l00121"></a>00121 mpc_decoder_bits_read(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d)
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 <span class="keywordflow">return</span> 32 * d-><a class="code" href="structmpc__decoder__t.html#z0_18">WordsRead</a> + d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>;
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="comment">// read desired number of bits out of the bitstream</span>
<a name="l00127"></a>00127 <span class="keyword">static</span> mpc_uint32_t
<a name="l00128"></a>00128 mpc_decoder_bitstream_read(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <span class="keyword">const</span> mpc_uint32_t bits)
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130 mpc_uint32_t out = d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a>;
<a name="l00131"></a>00131
<a name="l00132"></a>00132 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> += bits;
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> < 32) {
<a name="l00135"></a>00135 out >>= (32 - d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>);
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137 <span class="keywordflow">else</span> {
<a name="l00138"></a>00138 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = (d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> + 1) & MEMMASK];
<a name="l00139"></a>00139 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> -= 32;
<a name="l00140"></a>00140 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>) {
<a name="l00141"></a>00141 out <<= d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>;
<a name="l00142"></a>00142 out |= d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> >> (32 - d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>);
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144 ++(d-><a class="code" href="structmpc__decoder__t.html#z0_18">WordsRead</a>);
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="keywordflow">return</span> out & mask[bits];
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="comment">// decode SCFI-bundle (sv4,5,6)</span>
<a name="l00151"></a>00151 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00152"></a>00152 mpc_decoder_scfi_bundle_read(
<a name="l00153"></a>00153 <a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d,
<a name="l00154"></a>00154 <a class="code" href="structhuffman__type__t.html">HuffmanTyp</a>* Table, mpc_int32_t* SCFI, mpc_int32_t* DSCF)
<a name="l00155"></a>00155 {
<a name="l00156"></a>00156 <span class="comment">// load preview and decode</span>
<a name="l00157"></a>00157 mpc_uint32_t code = d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> << d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>;
<a name="l00158"></a>00158 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> > 26) {
<a name="l00159"></a>00159 code |= d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[(d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> + 1) & MEMMASK] >> (32 - d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>);
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161 <span class="keywordflow">while</span> (code < Table->Code) {
<a name="l00162"></a>00162 Table++;
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="comment">// set the new position within bitstream without performing a dummy-read</span>
<a name="l00166"></a>00166 <span class="keywordflow">if</span> ((d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> += Table-><a class="code" href="structhuffman__type__t.html#o1">Length</a>) >= 32) {
<a name="l00167"></a>00167 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> -= 32;
<a name="l00168"></a>00168 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = (d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a>+1) & MEMMASK];
<a name="l00169"></a>00169 ++(d-><a class="code" href="structmpc__decoder__t.html#z0_18">WordsRead</a>);
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171
<a name="l00172"></a>00172 *SCFI = Table-><a class="code" href="structhuffman__type__t.html#o2">Value</a> >> 1;
<a name="l00173"></a>00173 *DSCF = Table-><a class="code" href="structhuffman__type__t.html#o2">Value</a> & 1;
<a name="l00174"></a>00174 }
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00177"></a>00177 mpc_decoder_huffman_typ_cmpfn(<span class="keyword">const</span> <span class="keywordtype">void</span>* p1, <span class="keyword">const</span> <span class="keywordtype">void</span>* p2)
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 <span class="keywordflow">if</span> (((<a class="code" href="structhuffman__type__t.html">HuffmanTyp</a>*) p1)->Code < ((<a class="code" href="structhuffman__type__t.html">HuffmanTyp</a>*) p2)->Code ) <span class="keywordflow">return</span> +1;
<a name="l00180"></a>00180 <span class="keywordflow">if</span> (((<a class="code" href="structhuffman__type__t.html">HuffmanTyp</a>*) p1)->Code > ((<a class="code" href="structhuffman__type__t.html">HuffmanTyp</a>*) p2)->Code ) <span class="keywordflow">return</span> -1;
<a name="l00181"></a>00181 <span class="keywordflow">return</span> 0;
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="comment">// sort huffman-tables by codeword</span>
<a name="l00185"></a>00185 <span class="comment">// offset resulting value</span>
<a name="l00186"></a>00186 <span class="keywordtype">void</span>
<a name="l00187"></a><a class="code" href="mpc__decoder_8c.html#a23">00187</a> <a class="code" href="huffman_8h.html#a1">mpc_decoder_resort_huff_tables</a>(
<a name="l00188"></a>00188 <span class="keyword">const</span> mpc_uint32_t elements, <a class="code" href="structhuffman__type__t.html">HuffmanTyp</a>* Table, <span class="keyword">const</span> mpc_int32_t offset )
<a name="l00189"></a>00189 {
<a name="l00190"></a>00190 mpc_uint32_t i;
<a name="l00191"></a>00191
<a name="l00192"></a>00192 <span class="keywordflow">for</span> ( i = 0; i < elements; i++ ) {
<a name="l00193"></a>00193 Table[i].<a class="code" href="structhuffman__type__t.html#o0">Code</a> <<= 32 - Table[i].<a class="code" href="structhuffman__type__t.html#o1">Length</a>;
<a name="l00194"></a>00194 Table[i].<a class="code" href="structhuffman__type__t.html#o2">Value</a> = i - offset;
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196 qsort(Table, elements, <span class="keyword">sizeof</span>(*Table), mpc_decoder_huffman_typ_cmpfn);
<a name="l00197"></a>00197 }
<a name="l00198"></a>00198
<a name="l00199"></a>00199 <span class="comment">// basic huffman decoding routine</span>
<a name="l00200"></a>00200 <span class="comment">// works with maximum lengths up to 14</span>
<a name="l00201"></a>00201 <span class="keyword">static</span> mpc_int32_t
<a name="l00202"></a>00202 mpc_decoder_huffman_decode(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <span class="keyword">const</span> <a class="code" href="structhuffman__type__t.html">HuffmanTyp</a> *Table)
<a name="l00203"></a>00203 {
<a name="l00204"></a>00204 <span class="comment">// load preview and decode</span>
<a name="l00205"></a>00205 mpc_uint32_t code = d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> << d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>;
<a name="l00206"></a>00206 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> > 18) {
<a name="l00207"></a>00207 code |= d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[(d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> + 1) & MEMMASK] >> (32 - d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>);
<a name="l00208"></a>00208 }
<a name="l00209"></a>00209 <span class="keywordflow">while</span> (code < Table->Code) {
<a name="l00210"></a>00210 Table++;
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="comment">// set the new position within bitstream without performing a dummy-read</span>
<a name="l00214"></a>00214 <span class="keywordflow">if</span> ((d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> += Table-><a class="code" href="structhuffman__type__t.html#o1">Length</a>) >= 32) {
<a name="l00215"></a>00215 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> -= 32;
<a name="l00216"></a>00216 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = (d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> + 1) & MEMMASK];
<a name="l00217"></a>00217 ++(d-><a class="code" href="structmpc__decoder__t.html#z0_18">WordsRead</a>);
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="keywordflow">return</span> Table-><a class="code" href="structhuffman__type__t.html#o2">Value</a>;
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <span class="comment">// faster huffman through previewing less bits</span>
<a name="l00224"></a>00224 <span class="comment">// works with maximum lengths up to 10</span>
<a name="l00225"></a>00225 <span class="keyword">static</span> mpc_int32_t
<a name="l00226"></a>00226 mpc_decoder_huffman_decode_fast(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <span class="keyword">const</span> <a class="code" href="structhuffman__type__t.html">HuffmanTyp</a>* Table)
<a name="l00227"></a>00227 {
<a name="l00228"></a>00228 <span class="comment">// load preview and decode</span>
<a name="l00229"></a>00229 mpc_uint32_t code = d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> << d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>;
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> > 22) {
<a name="l00231"></a>00231 code |= d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[(d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> + 1) & MEMMASK] >> (32 - d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>);
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233 <span class="keywordflow">while</span> (code < Table->Code) {
<a name="l00234"></a>00234 Table++;
<a name="l00235"></a>00235 }
<a name="l00236"></a>00236
<a name="l00237"></a>00237 <span class="comment">// set the new position within bitstream without performing a dummy-read</span>
<a name="l00238"></a>00238 <span class="keywordflow">if</span> ((d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> += Table-><a class="code" href="structhuffman__type__t.html#o1">Length</a>) >= 32) {
<a name="l00239"></a>00239 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> -= 32;
<a name="l00240"></a>00240 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = (d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> + 1) & MEMMASK];
<a name="l00241"></a>00241 ++(d-><a class="code" href="structmpc__decoder__t.html#z0_18">WordsRead</a>);
<a name="l00242"></a>00242 }
<a name="l00243"></a>00243
<a name="l00244"></a>00244 <span class="keywordflow">return</span> Table-><a class="code" href="structhuffman__type__t.html#o2">Value</a>;
<a name="l00245"></a>00245 }
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="comment">// even faster huffman through previewing even less bits</span>
<a name="l00248"></a>00248 <span class="comment">// works with maximum lengths up to 5</span>
<a name="l00249"></a>00249 <span class="keyword">static</span> mpc_int32_t
<a name="l00250"></a>00250 mpc_decoder_huffman_decode_faster(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <span class="keyword">const</span> <a class="code" href="structhuffman__type__t.html">HuffmanTyp</a>* Table)
<a name="l00251"></a>00251 {
<a name="l00252"></a>00252 <span class="comment">// load preview and decode</span>
<a name="l00253"></a>00253 mpc_uint32_t code = d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> << d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>;
<a name="l00254"></a>00254 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> > 27) {
<a name="l00255"></a>00255 code |= d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[(d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> + 1) & MEMMASK] >> (32 - d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>);
<a name="l00256"></a>00256 }
<a name="l00257"></a>00257 <span class="keywordflow">while</span> (code < Table->Code) {
<a name="l00258"></a>00258 Table++;
<a name="l00259"></a>00259 }
<a name="l00260"></a>00260
<a name="l00261"></a>00261 <span class="comment">// set the new position within bitstream without performing a dummy-read</span>
<a name="l00262"></a>00262 <span class="keywordflow">if</span> ((d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> += Table-><a class="code" href="structhuffman__type__t.html#o1">Length</a>) >= 32) {
<a name="l00263"></a>00263 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> -= 32;
<a name="l00264"></a>00264 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = (d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> + 1) & MEMMASK];
<a name="l00265"></a>00265 ++(d-><a class="code" href="structmpc__decoder__t.html#z0_18">WordsRead</a>);
<a name="l00266"></a>00266 }
<a name="l00267"></a>00267
<a name="l00268"></a>00268 <span class="keywordflow">return</span> Table-><a class="code" href="structhuffman__type__t.html#o2">Value</a>;
<a name="l00269"></a>00269 }
<a name="l00270"></a>00270
<a name="l00271"></a>00271 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00272"></a>00272 mpc_decoder_reset_v(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d)
<a name="l00273"></a>00273 {
<a name="l00274"></a>00274 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_59">V_L</a>, 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_59">V_L</a>);
<a name="l00275"></a>00275 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_60">V_R</a>, 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_60">V_R</a>);
<a name="l00276"></a>00276 }
<a name="l00277"></a>00277
<a name="l00278"></a>00278 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00279"></a>00279 mpc_decoder_reset_synthesis(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d)
<a name="l00280"></a>00280 {
<a name="l00281"></a>00281 mpc_decoder_reset_v(d);
<a name="l00282"></a>00282 }
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00285"></a>00285 mpc_decoder_reset_y(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d)
<a name="l00286"></a>00286 {
<a name="l00287"></a>00287 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_61">Y_L</a>, 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_61">Y_L</a>);
<a name="l00288"></a>00288 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_62">Y_R</a>, 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_62">Y_R</a>);
<a name="l00289"></a>00289 }
<a name="l00290"></a>00290
<a name="l00291"></a>00291 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00292"></a>00292 mpc_decoder_reset_globals(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d)
<a name="l00293"></a>00293 {
<a name="l00294"></a>00294 mpc_decoder_reset_bitstream_decode(d);
<a name="l00295"></a>00295
<a name="l00296"></a>00296 d-><a class="code" href="structmpc__decoder__t.html#z0_8">DecodedFrames</a> = 0;
<a name="l00297"></a>00297 d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a> = 0;
<a name="l00298"></a>00298 d-><a class="code" href="structmpc__decoder__t.html#z0_12">MS_used</a> = 0;
<a name="l00299"></a>00299
<a name="l00300"></a>00300 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_61">Y_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_61">Y_L</a> );
<a name="l00301"></a>00301 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_62">Y_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_62">Y_R</a> );
<a name="l00302"></a>00302 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a> );
<a name="l00303"></a>00303 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a> );
<a name="l00304"></a>00304 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a> );
<a name="l00305"></a>00305 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a> );
<a name="l00306"></a>00306 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_54">SCFI_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_54">SCFI_L</a> );
<a name="l00307"></a>00307 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_55">SCFI_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_55">SCFI_R</a> );
<a name="l00308"></a>00308 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_52">DSCF_Flag_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_52">DSCF_Flag_L</a> );
<a name="l00309"></a>00309 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_53">DSCF_Flag_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_53">DSCF_Flag_R</a> );
<a name="l00310"></a>00310 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_56">DSCF_Reference_L</a>, 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_56">DSCF_Reference_L</a> );
<a name="l00311"></a>00311 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_57">DSCF_Reference_R</a>, 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_57">DSCF_Reference_R</a> );
<a name="l00312"></a>00312 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a> );
<a name="l00313"></a>00313 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_58">MS_Flag</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_58">MS_Flag</a> );
<a name="l00314"></a>00314 }
<a name="l00315"></a>00315
<a name="l00316"></a>00316 mpc_uint32_t
<a name="l00317"></a><a class="code" href="mpc__decoder_8c.html#a31">00317</a> <a class="code" href="mpcdec_8h.html#a18">mpc_decoder_decode_frame</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_uint32_t *in_buffer,
<a name="l00318"></a>00318 mpc_uint32_t in_len, <a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a> *out_buffer)
<a name="l00319"></a>00319 {
<a name="l00320"></a>00320 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;
<a name="l00321"></a>00321 mpc_decoder_reset_bitstream_decode(d);
<a name="l00322"></a>00322 <span class="keywordflow">if</span> (in_len > <span class="keyword">sizeof</span>(d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>)) in_len = <span class="keyword">sizeof</span>(d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>);
<a name="l00323"></a>00323 memcpy(d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>, in_buffer, in_len);
<a name="l00324"></a>00324 <span class="preprocessor">#ifdef MPC_LITTLE_ENDIAN</span>
<a name="l00325"></a>00325 <span class="preprocessor"></span> <span class="keywordflow">for</span> (i = 0; i < (in_len + 3) / 4; i++)
<a name="l00326"></a>00326 d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[i] = mpc_swap32(d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[i]);
<a name="l00327"></a>00327 <span class="preprocessor">#endif</span>
<a name="l00328"></a>00328 <span class="preprocessor"></span> d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[0];
<a name="l00329"></a>00329 <span class="keywordflow">switch</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a>) {
<a name="l00330"></a>00330 <span class="keywordflow">case</span> 0x04:
<a name="l00331"></a>00331 <span class="keywordflow">case</span> 0x05:
<a name="l00332"></a>00332 <span class="keywordflow">case</span> 0x06:
<a name="l00333"></a>00333 <a class="code" href="mpc__decoder_8c.html#a10">mpc_decoder_read_bitstream_sv6</a>(d);
<a name="l00334"></a>00334 <span class="keywordflow">break</span>;
<a name="l00335"></a>00335 <span class="keywordflow">case</span> 0x07:
<a name="l00336"></a>00336 <span class="keywordflow">case</span> 0x17:
<a name="l00337"></a>00337 <a class="code" href="mpc__decoder_8c.html#a11">mpc_decoder_read_bitstream_sv7</a>(d);
<a name="l00338"></a>00338 <span class="keywordflow">break</span>;
<a name="l00339"></a>00339 <span class="keywordflow">default</span>:
<a name="l00340"></a>00340 <span class="keywordflow">return</span> (mpc_uint32_t)(-1);
<a name="l00341"></a>00341 }
<a name="l00342"></a>00342 <a class="code" href="mpc__decoder_8c.html#a14">mpc_decoder_requantisierung</a>(d, d-><a class="code" href="structmpc__decoder__t.html#z0_13">Max_Band</a>);
<a name="l00343"></a>00343 <a class="code" href="internal_8h.html#a5">mpc_decoder_synthese_filter_float</a>(d, out_buffer);
<a name="l00344"></a>00344 <span class="keywordflow">return</span> mpc_decoder_bits_read(d);
<a name="l00345"></a>00345 }
<a name="l00346"></a>00346
<a name="l00347"></a>00347 <span class="keyword">static</span> mpc_uint32_t
<a name="l00348"></a>00348 mpc_decoder_decode_internal(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a> *buffer)
<a name="l00349"></a>00349 {
<a name="l00350"></a>00350 mpc_uint32_t output_frame_length = MPC_FRAME_LENGTH;
<a name="l00351"></a>00351
<a name="l00352"></a>00352 mpc_uint32_t FrameBitCnt = 0;
<a name="l00353"></a>00353
<a name="l00354"></a>00354 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_8">DecodedFrames</a> >= d-><a class="code" href="structmpc__decoder__t.html#z0_9">OverallFrames</a>) {
<a name="l00355"></a>00355 <span class="keywordflow">return</span> (mpc_uint32_t)(-1); <span class="comment">// end of file -> abort decoding</span>
<a name="l00356"></a>00356 }
<a name="l00357"></a>00357
<a name="l00358"></a>00358 <span class="comment">// read jump-info for validity check of frame</span>
<a name="l00359"></a>00359 d-><a class="code" href="structmpc__decoder__t.html#z0_5">FwdJumpInfo</a> = mpc_decoder_bitstream_read(d, 20);
<a name="l00360"></a>00360
<a name="l00361"></a>00361 d-><a class="code" href="structmpc__decoder__t.html#z0_6">ActDecodePos</a> = (d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> << 5) + d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>;
<a name="l00362"></a>00362
<a name="l00363"></a>00363 <span class="comment">// decode data and check for validity of frame</span>
<a name="l00364"></a>00364 FrameBitCnt = mpc_decoder_bits_read(d);
<a name="l00365"></a>00365 <span class="keywordflow">switch</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a>) {
<a name="l00366"></a>00366 <span class="keywordflow">case</span> 0x04:
<a name="l00367"></a>00367 <span class="keywordflow">case</span> 0x05:
<a name="l00368"></a>00368 <span class="keywordflow">case</span> 0x06:
<a name="l00369"></a>00369 <a class="code" href="mpc__decoder_8c.html#a10">mpc_decoder_read_bitstream_sv6</a>(d);
<a name="l00370"></a>00370 <span class="keywordflow">break</span>;
<a name="l00371"></a>00371 <span class="keywordflow">case</span> 0x07:
<a name="l00372"></a>00372 <span class="keywordflow">case</span> 0x17:
<a name="l00373"></a>00373 <a class="code" href="mpc__decoder_8c.html#a11">mpc_decoder_read_bitstream_sv7</a>(d);
<a name="l00374"></a>00374 <span class="keywordflow">break</span>;
<a name="l00375"></a>00375 <span class="keywordflow">default</span>:
<a name="l00376"></a>00376 <span class="keywordflow">return</span> (mpc_uint32_t)(-1);
<a name="l00377"></a>00377 }
<a name="l00378"></a>00378 d-><a class="code" href="structmpc__decoder__t.html#z0_7">FrameWasValid</a> = mpc_decoder_bits_read(d) - FrameBitCnt == d-><a class="code" href="structmpc__decoder__t.html#z0_5">FwdJumpInfo</a>;
<a name="l00379"></a>00379
<a name="l00380"></a>00380 <span class="comment">// synthesize signal</span>
<a name="l00381"></a>00381 <a class="code" href="mpc__decoder_8c.html#a14">mpc_decoder_requantisierung</a>(d, d-><a class="code" href="structmpc__decoder__t.html#z0_13">Max_Band</a>);
<a name="l00382"></a>00382
<a name="l00383"></a>00383 <span class="comment">//if ( d->EQ_activated && PluginSettings.EQbyMPC )</span>
<a name="l00384"></a>00384 <span class="comment">// perform_EQ ();</span>
<a name="l00385"></a>00385
<a name="l00386"></a>00386 <a class="code" href="internal_8h.html#a5">mpc_decoder_synthese_filter_float</a>(d, buffer);
<a name="l00387"></a>00387
<a name="l00388"></a>00388 d-><a class="code" href="structmpc__decoder__t.html#z0_8">DecodedFrames</a>++;
<a name="l00389"></a>00389
<a name="l00390"></a>00390 <span class="comment">// cut off first MPC_DECODER_SYNTH_DELAY zero-samples</span>
<a name="l00391"></a>00391 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_8">DecodedFrames</a> == d-><a class="code" href="structmpc__decoder__t.html#z0_9">OverallFrames</a> && d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a> >= 6) {
<a name="l00392"></a>00392 <span class="comment">// reconstruct exact filelength</span>
<a name="l00393"></a>00393 mpc_int32_t mod_block = mpc_decoder_bitstream_read(d, 11);
<a name="l00394"></a>00394 mpc_int32_t FilterDecay;
<a name="l00395"></a>00395
<a name="l00396"></a>00396 <span class="keywordflow">if</span> (mod_block == 0) {
<a name="l00397"></a>00397 <span class="comment">// Encoder bugfix</span>
<a name="l00398"></a>00398 mod_block = 1152;
<a name="l00399"></a>00399 }
<a name="l00400"></a>00400 FilterDecay = (mod_block + MPC_DECODER_SYNTH_DELAY) % MPC_FRAME_LENGTH;
<a name="l00401"></a>00401
<a name="l00402"></a>00402 <span class="comment">// additional FilterDecay samples are needed for decay of synthesis filter</span>
<a name="l00403"></a>00403 <span class="keywordflow">if</span> (MPC_DECODER_SYNTH_DELAY + mod_block >= MPC_FRAME_LENGTH) {
<a name="l00404"></a>00404
<a name="l00405"></a>00405 <span class="comment">// **********************************************************************</span>
<a name="l00406"></a>00406 <span class="comment">// Rhoades 4/16/2002</span>
<a name="l00407"></a>00407 <span class="comment">// Commented out are blocks of code which cause gapless playback to fail.</span>
<a name="l00408"></a>00408 <span class="comment">// Temporary fix...</span>
<a name="l00409"></a>00409 <span class="comment">// **********************************************************************</span>
<a name="l00410"></a>00410
<a name="l00411"></a>00411 <span class="keywordflow">if</span> (!d-><a class="code" href="structmpc__decoder__t.html#z0_16">TrueGaplessPresent</a>) {
<a name="l00412"></a>00412 mpc_decoder_reset_y(d);
<a name="l00413"></a>00413 }
<a name="l00414"></a>00414 <span class="keywordflow">else</span> {
<a name="l00415"></a>00415 <span class="comment">//if ( MPC_FRAME_LENGTH != d->LastValidSamples ) {</span>
<a name="l00416"></a>00416 mpc_decoder_bitstream_read(d, 20);
<a name="l00417"></a>00417 <a class="code" href="mpc__decoder_8c.html#a11">mpc_decoder_read_bitstream_sv7</a>(d);
<a name="l00418"></a>00418 <a class="code" href="mpc__decoder_8c.html#a14">mpc_decoder_requantisierung</a>(d, d-><a class="code" href="structmpc__decoder__t.html#z0_13">Max_Band</a>);
<a name="l00419"></a>00419 <span class="comment">//FilterDecay = d->LastValidSamples;</span>
<a name="l00420"></a>00420 <span class="comment">//}</span>
<a name="l00421"></a>00421 <span class="comment">//else {</span>
<a name="l00422"></a>00422 <span class="comment">//FilterDecay = 0;</span>
<a name="l00423"></a>00423 <span class="comment">//}</span>
<a name="l00424"></a>00424 }
<a name="l00425"></a>00425
<a name="l00426"></a>00426 <a class="code" href="internal_8h.html#a5">mpc_decoder_synthese_filter_float</a>(d, buffer + 2304);
<a name="l00427"></a>00427
<a name="l00428"></a>00428 output_frame_length = MPC_FRAME_LENGTH + FilterDecay;
<a name="l00429"></a>00429 }
<a name="l00430"></a>00430 <span class="keywordflow">else</span> { <span class="comment">// there are only FilterDecay samples needed for this frame</span>
<a name="l00431"></a>00431 output_frame_length = FilterDecay;
<a name="l00432"></a>00432 }
<a name="l00433"></a>00433 }
<a name="l00434"></a>00434
<a name="l00435"></a>00435 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_4">samples_to_skip</a>) {
<a name="l00436"></a>00436 <span class="keywordflow">if</span> (output_frame_length < d->samples_to_skip) {
<a name="l00437"></a>00437 d-><a class="code" href="structmpc__decoder__t.html#z0_4">samples_to_skip</a> -= output_frame_length;
<a name="l00438"></a>00438 output_frame_length = 0;
<a name="l00439"></a>00439 }
<a name="l00440"></a>00440 <span class="keywordflow">else</span> {
<a name="l00441"></a>00441 output_frame_length -= d-><a class="code" href="structmpc__decoder__t.html#z0_4">samples_to_skip</a>;
<a name="l00442"></a>00442 memmove(
<a name="l00443"></a>00443 buffer,
<a name="l00444"></a>00444 buffer + d-><a class="code" href="structmpc__decoder__t.html#z0_4">samples_to_skip</a> * 2,
<a name="l00445"></a>00445 output_frame_length * 2 * sizeof (<a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a>));
<a name="l00446"></a>00446 d-><a class="code" href="structmpc__decoder__t.html#z0_4">samples_to_skip</a> = 0;
<a name="l00447"></a>00447 }
<a name="l00448"></a>00448 }
<a name="l00449"></a>00449
<a name="l00450"></a>00450 <span class="keywordflow">return</span> output_frame_length;
<a name="l00451"></a>00451 }
<a name="l00452"></a>00452
<a name="l00453"></a><a class="code" href="mpc__decoder_8c.html#a33">00453</a> mpc_uint32_t <a class="code" href="mpcdec_8h.html#a17">mpc_decoder_decode</a>(
<a name="l00454"></a>00454 <a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d,
<a name="l00455"></a>00455 <a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a> *buffer,
<a name="l00456"></a>00456 mpc_uint32_t *vbr_update_acc,
<a name="l00457"></a>00457 mpc_uint32_t *vbr_update_bits)
<a name="l00458"></a>00458 {
<a name="l00459"></a>00459 <span class="keywordflow">for</span>(;;)
<a name="l00460"></a>00460 {
<a name="l00461"></a>00461 <span class="comment">//const mpc_int32_t MaxBrokenFrames = 0; // PluginSettings.MaxBrokenFrames</span>
<a name="l00462"></a>00462
<a name="l00463"></a>00463 mpc_uint32_t RING = d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a>;
<a name="l00464"></a>00464 mpc_int32_t vbr_ring = (RING << 5) + d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>;
<a name="l00465"></a>00465
<a name="l00466"></a>00466 mpc_uint32_t valid_samples = mpc_decoder_decode_internal(d, buffer);
<a name="l00467"></a>00467
<a name="l00468"></a>00468 <span class="keywordflow">if</span> (valid_samples == (mpc_uint32_t)(-1) ) {
<a name="l00469"></a>00469 <span class="keywordflow">return</span> 0;
<a name="l00470"></a>00470 }
<a name="l00471"></a>00471
<a name="l00472"></a>00472 <span class="comment">/**************** ERROR CONCEALMENT *****************/</span>
<a name="l00473"></a>00473 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_7">FrameWasValid</a> == 0 ) {
<a name="l00474"></a>00474 <span class="comment">// error occurred in bitstream</span>
<a name="l00475"></a>00475 <span class="keywordflow">return</span> (mpc_uint32_t)(-1);
<a name="l00476"></a>00476 }
<a name="l00477"></a>00477 <span class="keywordflow">else</span> {
<a name="l00478"></a>00478 <span class="keywordflow">if</span> (vbr_update_acc && vbr_update_bits) {
<a name="l00479"></a>00479 (*vbr_update_acc) ++;
<a name="l00480"></a>00480 vbr_ring = (d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> << 5) + d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> - vbr_ring;
<a name="l00481"></a>00481 <span class="keywordflow">if</span> (vbr_ring < 0) {
<a name="l00482"></a>00482 vbr_ring += 524288;
<a name="l00483"></a>00483 }
<a name="l00484"></a>00484 (*vbr_update_bits) += vbr_ring;
<a name="l00485"></a>00485 }
<a name="l00486"></a>00486
<a name="l00487"></a>00487 }
<a name="l00488"></a>00488 <a class="code" href="mpc__decoder_8c.html#a12">mpc_decoder_update_buffer</a>(d, RING);
<a name="l00489"></a>00489
<a name="l00490"></a>00490 <span class="keywordflow">if</span> (valid_samples > 0) {
<a name="l00491"></a>00491 <span class="keywordflow">return</span> valid_samples;
<a name="l00492"></a>00492 }
<a name="l00493"></a>00493 }
<a name="l00494"></a>00494 }
<a name="l00495"></a>00495
<a name="l00496"></a>00496 <span class="keywordtype">void</span>
<a name="l00497"></a><a class="code" href="mpc__decoder_8c.html#a14">00497</a> <a class="code" href="mpc__decoder_8c.html#a14">mpc_decoder_requantisierung</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <span class="keyword">const</span> mpc_int32_t Last_Band)
<a name="l00498"></a>00498 {
<a name="l00499"></a>00499 mpc_int32_t Band;
<a name="l00500"></a>00500 mpc_int32_t n;
<a name="l00501"></a>00501 <a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a> facL;
<a name="l00502"></a>00502 <a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a> facR;
<a name="l00503"></a>00503 <a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a> templ;
<a name="l00504"></a>00504 <a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a> tempr;
<a name="l00505"></a>00505 <a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a>* YL;
<a name="l00506"></a>00506 <a class="code" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a>* YR;
<a name="l00507"></a>00507 mpc_int32_t* L;
<a name="l00508"></a>00508 mpc_int32_t* R;
<a name="l00509"></a>00509
<a name="l00510"></a>00510 <span class="preprocessor">#ifdef MPC_FIXED_POINT</span>
<a name="l00511"></a>00511 <span class="preprocessor"></span><span class="preprocessor">#if MPC_FIXED_POINT_FRACTPART == 14</span>
<a name="l00512"></a>00512 <span class="preprocessor"></span><span class="preprocessor">#define MPC_MULTIPLY_SCF(CcVal, SCF_idx) \</span>
<a name="l00513"></a>00513 <span class="preprocessor"> MPC_MULTIPLY_EX(CcVal, d->SCF[SCF_idx], d->SCF_shift[SCF_idx])</span>
<a name="l00514"></a>00514 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00515"></a>00515 <span class="preprocessor"></span>
<a name="l00516"></a>00516 <span class="preprocessor">#error FIXME, Cc table is in 18.14 format</span>
<a name="l00517"></a>00517 <span class="preprocessor"></span>
<a name="l00518"></a>00518 <span class="preprocessor">#endif</span>
<a name="l00519"></a>00519 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00520"></a>00520 <span class="preprocessor"></span><span class="preprocessor">#define MPC_MULTIPLY_SCF(CcVal, SCF_idx) \</span>
<a name="l00521"></a>00521 <span class="preprocessor"> MPC_MULTIPLY(CcVal, d->SCF[SCF_idx])</span>
<a name="l00522"></a>00522 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00523"></a>00523 <span class="preprocessor"></span> <span class="comment">// requantization and scaling of subband-samples</span>
<a name="l00524"></a>00524 <span class="keywordflow">for</span> ( Band = 0; Band <= Last_Band; Band++ ) { <span class="comment">// setting pointers</span>
<a name="l00525"></a>00525 YL = d-><a class="code" href="structmpc__decoder__t.html#z0_61">Y_L</a>[0] + Band;
<a name="l00526"></a>00526 YR = d-><a class="code" href="structmpc__decoder__t.html#z0_62">Y_R</a>[0] + Band;
<a name="l00527"></a>00527 L = d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a>[Band].<a class="code" href="structQuantTyp.html#o0">L</a>;
<a name="l00528"></a>00528 R = d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a>[Band].<a class="code" href="structQuantTyp.html#o1">R</a>;
<a name="l00529"></a>00529 <span class="comment">/************************** MS-coded **************************/</span>
<a name="l00530"></a>00530 <span class="keywordflow">if</span> ( d-><a class="code" href="structmpc__decoder__t.html#z0_58">MS_Flag</a> [Band] ) {
<a name="l00531"></a>00531 <span class="keywordflow">if</span> ( d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a> [Band] ) {
<a name="l00532"></a>00532 <span class="keywordflow">if</span> ( d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a> [Band] ) { <span class="comment">// M!=0, S!=0</span>
<a name="l00533"></a>00533 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][0]);
<a name="l00534"></a>00534 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][0]);
<a name="l00535"></a>00535 <span class="keywordflow">for</span> ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
<a name="l00536"></a>00536 *YL = (templ = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++))+(tempr = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*R++));
<a name="l00537"></a>00537 *YR = templ - tempr;
<a name="l00538"></a>00538 }
<a name="l00539"></a>00539 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][1]);
<a name="l00540"></a>00540 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][1]);
<a name="l00541"></a>00541 <span class="keywordflow">for</span> ( ; n < 24; n++, YL += 32, YR += 32 ) {
<a name="l00542"></a>00542 *YL = (templ = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++))+(tempr = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*R++));
<a name="l00543"></a>00543 *YR = templ - tempr;
<a name="l00544"></a>00544 }
<a name="l00545"></a>00545 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][2]);
<a name="l00546"></a>00546 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][2]);
<a name="l00547"></a>00547 <span class="keywordflow">for</span> ( ; n < 36; n++, YL += 32, YR += 32 ) {
<a name="l00548"></a>00548 *YL = (templ = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++))+(tempr = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*R++));
<a name="l00549"></a>00549 *YR = templ - tempr;
<a name="l00550"></a>00550 }
<a name="l00551"></a>00551 } <span class="keywordflow">else</span> { <span class="comment">// M!=0, S==0</span>
<a name="l00552"></a>00552 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][0]);
<a name="l00553"></a>00553 <span class="keywordflow">for</span> ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
<a name="l00554"></a>00554 *YR = *YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++);
<a name="l00555"></a>00555 }
<a name="l00556"></a>00556 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][1]);
<a name="l00557"></a>00557 <span class="keywordflow">for</span> ( ; n < 24; n++, YL += 32, YR += 32 ) {
<a name="l00558"></a>00558 *YR = *YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++);
<a name="l00559"></a>00559 }
<a name="l00560"></a>00560 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][2]);
<a name="l00561"></a>00561 <span class="keywordflow">for</span> ( ; n < 36; n++, YL += 32, YR += 32 ) {
<a name="l00562"></a>00562 *YR = *YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++);
<a name="l00563"></a>00563 }
<a name="l00564"></a>00564 }
<a name="l00565"></a>00565 } <span class="keywordflow">else</span> {
<a name="l00566"></a>00566 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]) <span class="comment">// M==0, S!=0</span>
<a name="l00567"></a>00567 {
<a name="l00568"></a>00568 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][0]);
<a name="l00569"></a>00569 <span class="keywordflow">for</span> ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
<a name="l00570"></a>00570 *YR = - (*YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*(R++)));
<a name="l00571"></a>00571 }
<a name="l00572"></a>00572 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][1]);
<a name="l00573"></a>00573 <span class="keywordflow">for</span> ( ; n < 24; n++, YL += 32, YR += 32 ) {
<a name="l00574"></a>00574 *YR = - (*YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*(R++)));
<a name="l00575"></a>00575 }
<a name="l00576"></a>00576 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][2]);
<a name="l00577"></a>00577 <span class="keywordflow">for</span> ( ; n < 36; n++, YL += 32, YR += 32 ) {
<a name="l00578"></a>00578 *YR = - (*YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*(R++)));
<a name="l00579"></a>00579 }
<a name="l00580"></a>00580 } <span class="keywordflow">else</span> { <span class="comment">// M==0, S==0</span>
<a name="l00581"></a>00581 <span class="keywordflow">for</span> ( n = 0; n < 36; n++, YL += 32, YR += 32 ) {
<a name="l00582"></a>00582 *YR = *YL = 0;
<a name="l00583"></a>00583 }
<a name="l00584"></a>00584 }
<a name="l00585"></a>00585 }
<a name="l00586"></a>00586 }
<a name="l00587"></a>00587 <span class="comment">/************************** LR-coded **************************/</span>
<a name="l00588"></a>00588 <span class="keywordflow">else</span> {
<a name="l00589"></a>00589 <span class="keywordflow">if</span> ( d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a> [Band] ) {
<a name="l00590"></a>00590 <span class="keywordflow">if</span> ( d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a> [Band] ) { <span class="comment">// L!=0, R!=0</span>
<a name="l00591"></a>00591 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][0]);
<a name="l00592"></a>00592 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][0]);
<a name="l00593"></a>00593 <span class="keywordflow">for</span> (n = 0; n < 12; n++, YL += 32, YR += 32 ) {
<a name="l00594"></a>00594 *YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++);
<a name="l00595"></a>00595 *YR = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*R++);
<a name="l00596"></a>00596 }
<a name="l00597"></a>00597 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][1]);
<a name="l00598"></a>00598 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][1]);
<a name="l00599"></a>00599 <span class="keywordflow">for</span> (; n < 24; n++, YL += 32, YR += 32 ) {
<a name="l00600"></a>00600 *YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++);
<a name="l00601"></a>00601 *YR = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*R++);
<a name="l00602"></a>00602 }
<a name="l00603"></a>00603 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][2]);
<a name="l00604"></a>00604 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][2]);
<a name="l00605"></a>00605 <span class="keywordflow">for</span> (; n < 36; n++, YL += 32, YR += 32 ) {
<a name="l00606"></a>00606 *YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++);
<a name="l00607"></a>00607 *YR = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*R++);
<a name="l00608"></a>00608 }
<a name="l00609"></a>00609 } <span class="keywordflow">else</span> { <span class="comment">// L!=0, R==0</span>
<a name="l00610"></a>00610 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][0]);
<a name="l00611"></a>00611 <span class="keywordflow">for</span> ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
<a name="l00612"></a>00612 *YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++);
<a name="l00613"></a>00613 *YR = 0;
<a name="l00614"></a>00614 }
<a name="l00615"></a>00615 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][1]);
<a name="l00616"></a>00616 <span class="keywordflow">for</span> ( ; n < 24; n++, YL += 32, YR += 32 ) {
<a name="l00617"></a>00617 *YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++);
<a name="l00618"></a>00618 *YR = 0;
<a name="l00619"></a>00619 }
<a name="l00620"></a>00620 facL = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[Band][2]);
<a name="l00621"></a>00621 <span class="keywordflow">for</span> ( ; n < 36; n++, YL += 32, YR += 32 ) {
<a name="l00622"></a>00622 *YL = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facL,*L++);
<a name="l00623"></a>00623 *YR = 0;
<a name="l00624"></a>00624 }
<a name="l00625"></a>00625 }
<a name="l00626"></a>00626 }
<a name="l00627"></a>00627 <span class="keywordflow">else</span> {
<a name="l00628"></a>00628 <span class="keywordflow">if</span> ( d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a> [Band] ) { <span class="comment">// L==0, R!=0</span>
<a name="l00629"></a>00629 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][0]);
<a name="l00630"></a>00630 <span class="keywordflow">for</span> ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
<a name="l00631"></a>00631 *YL = 0;
<a name="l00632"></a>00632 *YR = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*R++);
<a name="l00633"></a>00633 }
<a name="l00634"></a>00634 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][1]);
<a name="l00635"></a>00635 <span class="keywordflow">for</span> ( ; n < 24; n++, YL += 32, YR += 32 ) {
<a name="l00636"></a>00636 *YL = 0;
<a name="l00637"></a>00637 *YR = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*R++);
<a name="l00638"></a>00638 }
<a name="l00639"></a>00639 facR = MPC_MULTIPLY_SCF( <a class="code" href="requant_8h.html#a1">Cc</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>[Band]] , (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[Band][2]);
<a name="l00640"></a>00640 <span class="keywordflow">for</span> ( ; n < 36; n++, YL += 32, YR += 32 ) {
<a name="l00641"></a>00641 *YL = 0;
<a name="l00642"></a>00642 *YR = <a class="code" href="math_8h.html#a8">MPC_MULTIPLY_FLOAT_INT</a>(facR,*R++);
<a name="l00643"></a>00643 }
<a name="l00644"></a>00644 } <span class="keywordflow">else</span> { <span class="comment">// L==0, R==0</span>
<a name="l00645"></a>00645 <span class="keywordflow">for</span> ( n = 0; n < 36; n++, YL += 32, YR += 32 ) {
<a name="l00646"></a>00646 *YR = *YL = 0;
<a name="l00647"></a>00647 }
<a name="l00648"></a>00648 }
<a name="l00649"></a>00649 }
<a name="l00650"></a>00650 }
<a name="l00651"></a>00651 }
<a name="l00652"></a>00652 }
<a name="l00653"></a>00653
<a name="l00654"></a>00654 <span class="comment">/****************************************** SV 6 ******************************************/</span>
<a name="l00655"></a>00655 <span class="keywordtype">void</span>
<a name="l00656"></a><a class="code" href="mpc__decoder_8c.html#a10">00656</a> <a class="code" href="mpc__decoder_8c.html#a10">mpc_decoder_read_bitstream_sv6</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d)
<a name="l00657"></a>00657 {
<a name="l00658"></a>00658 mpc_int32_t n,k;
<a name="l00659"></a>00659 mpc_int32_t Max_used_Band=0;
<a name="l00660"></a>00660 <a class="code" href="structhuffman__type__t.html">HuffmanTyp</a> *Table;
<a name="l00661"></a>00661 <span class="keyword">const</span> <a class="code" href="structhuffman__type__t.html">HuffmanTyp</a> *x1;
<a name="l00662"></a>00662 <span class="keyword">const</span> <a class="code" href="structhuffman__type__t.html">HuffmanTyp</a> *x2;
<a name="l00663"></a>00663 mpc_int32_t *L;
<a name="l00664"></a>00664 mpc_int32_t *R;
<a name="l00665"></a>00665 mpc_int32_t *ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>;
<a name="l00666"></a>00666 mpc_int32_t *ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>;
<a name="l00667"></a>00667
<a name="l00668"></a>00668 <span class="comment">/************************ HEADER **************************/</span>
<a name="l00669"></a>00669 ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>;
<a name="l00670"></a>00670 ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>;
<a name="l00671"></a>00671 <span class="keywordflow">for</span> (n=0; n <= d->Max_Band; ++n, ++ResL, ++ResR)
<a name="l00672"></a>00672 {
<a name="l00673"></a>00673 <span class="keywordflow">if</span> (n<11) Table = d-><a class="code" href="structmpc__decoder__t.html#z0_37">Region_A</a>;
<a name="l00674"></a>00674 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (n>=11 && n<=22) Table = d-><a class="code" href="structmpc__decoder__t.html#z0_38">Region_B</a>;
<a name="l00675"></a>00675 <span class="keywordflow">else</span> <span class="comment">/*if (n>=23)*/</span> Table = d-><a class="code" href="structmpc__decoder__t.html#z0_39">Region_C</a>;
<a name="l00676"></a>00676
<a name="l00677"></a>00677 *ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_22">Q_res</a>[n][mpc_decoder_huffman_decode(d, Table)];
<a name="l00678"></a>00678 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_12">MS_used</a>) {
<a name="l00679"></a>00679 d-><a class="code" href="structmpc__decoder__t.html#z0_58">MS_Flag</a>[n] = mpc_decoder_bitstream_read(d, 1);
<a name="l00680"></a>00680 }
<a name="l00681"></a>00681 *ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_22">Q_res</a>[n][mpc_decoder_huffman_decode(d, Table)];
<a name="l00682"></a>00682
<a name="l00683"></a>00683 <span class="comment">// only perform the following procedure up to the maximum non-zero subband</span>
<a name="l00684"></a>00684 <span class="keywordflow">if</span> (*ResL || *ResR) Max_used_Band = n;
<a name="l00685"></a>00685 }
<a name="l00686"></a>00686
<a name="l00687"></a>00687 <span class="comment">/************************* SCFI-Bundle *****************************/</span>
<a name="l00688"></a>00688 ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>;
<a name="l00689"></a>00689 ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>;
<a name="l00690"></a>00690 <span class="keywordflow">for</span> (n=0; n<=Max_used_Band; ++n, ++ResL, ++ResR) {
<a name="l00691"></a>00691 <span class="keywordflow">if</span> (*ResL) mpc_decoder_scfi_bundle_read(d, d-><a class="code" href="structmpc__decoder__t.html#z0_35">SCFI_Bundle</a>, &(d->SCFI_L[n]), &(d->DSCF_Flag_L[n]));
<a name="l00692"></a>00692 <span class="keywordflow">if</span> (*ResR) mpc_decoder_scfi_bundle_read(d, d->SCFI_Bundle, &(d->SCFI_R[n]), &(d->DSCF_Flag_R[n]));
<a name="l00693"></a>00693 }
<a name="l00694"></a>00694
<a name="l00695"></a>00695 <span class="comment">/***************************** SCFI ********************************/</span>
<a name="l00696"></a>00696 ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>;
<a name="l00697"></a>00697 ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>;
<a name="l00698"></a>00698 L = d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[0];
<a name="l00699"></a>00699 R = d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[0];
<a name="l00700"></a>00700 <span class="keywordflow">for</span> (n=0; n <= Max_used_Band; ++n, ++ResL, ++ResR, L+=3, R+=3)
<a name="l00701"></a>00701 {
<a name="l00702"></a>00702 <span class="keywordflow">if</span> (*ResL)
<a name="l00703"></a>00703 {
<a name="l00704"></a>00704 <span class="comment">/*********** DSCF ************/</span>
<a name="l00705"></a>00705 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_52">DSCF_Flag_L</a>[n]==1)
<a name="l00706"></a>00706 {
<a name="l00707"></a>00707 L[2] = d-><a class="code" href="structmpc__decoder__t.html#z0_56">DSCF_Reference_L</a>[n];
<a name="l00708"></a>00708 <span class="keywordflow">switch</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_54">SCFI_L</a>[n])
<a name="l00709"></a>00709 {
<a name="l00710"></a>00710 <span class="keywordflow">case</span> 3:
<a name="l00711"></a>00711 L[0] = L[2] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00712"></a>00712 L[1] = L[0];
<a name="l00713"></a>00713 L[2] = L[1];
<a name="l00714"></a>00714 <span class="keywordflow">break</span>;
<a name="l00715"></a>00715 <span class="keywordflow">case</span> 1:
<a name="l00716"></a>00716 L[0] = L[2] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00717"></a>00717 L[1] = L[0] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00718"></a>00718 L[2] = L[1];
<a name="l00719"></a>00719 <span class="keywordflow">break</span>;
<a name="l00720"></a>00720 <span class="keywordflow">case</span> 2:
<a name="l00721"></a>00721 L[0] = L[2] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00722"></a>00722 L[1] = L[0];
<a name="l00723"></a>00723 L[2] = L[1] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00724"></a>00724 <span class="keywordflow">break</span>;
<a name="l00725"></a>00725 <span class="keywordflow">case</span> 0:
<a name="l00726"></a>00726 L[0] = L[2] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00727"></a>00727 L[1] = L[0] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00728"></a>00728 L[2] = L[1] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00729"></a>00729 <span class="keywordflow">break</span>;
<a name="l00730"></a>00730 <span class="keywordflow">default</span>:
<a name="l00731"></a>00731 <span class="keywordflow">return</span>;
<a name="l00732"></a>00732 <span class="keywordflow">break</span>;
<a name="l00733"></a>00733 }
<a name="l00734"></a>00734 }
<a name="l00735"></a>00735 <span class="comment">/************ SCF ************/</span>
<a name="l00736"></a>00736 <span class="keywordflow">else</span>
<a name="l00737"></a>00737 {
<a name="l00738"></a>00738 <span class="keywordflow">switch</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_54">SCFI_L</a>[n])
<a name="l00739"></a>00739 {
<a name="l00740"></a>00740 <span class="keywordflow">case</span> 3:
<a name="l00741"></a>00741 L[0] = mpc_decoder_bitstream_read(d, 6);
<a name="l00742"></a>00742 L[1] = L[0];
<a name="l00743"></a>00743 L[2] = L[1];
<a name="l00744"></a>00744 <span class="keywordflow">break</span>;
<a name="l00745"></a>00745 <span class="keywordflow">case</span> 1:
<a name="l00746"></a>00746 L[0] = mpc_decoder_bitstream_read(d, 6);
<a name="l00747"></a>00747 L[1] = mpc_decoder_bitstream_read(d, 6);
<a name="l00748"></a>00748 L[2] = L[1];
<a name="l00749"></a>00749 <span class="keywordflow">break</span>;
<a name="l00750"></a>00750 <span class="keywordflow">case</span> 2:
<a name="l00751"></a>00751 L[0] = mpc_decoder_bitstream_read(d, 6);
<a name="l00752"></a>00752 L[1] = L[0];
<a name="l00753"></a>00753 L[2] = mpc_decoder_bitstream_read(d, 6);
<a name="l00754"></a>00754 <span class="keywordflow">break</span>;
<a name="l00755"></a>00755 <span class="keywordflow">case</span> 0:
<a name="l00756"></a>00756 L[0] = mpc_decoder_bitstream_read(d, 6);
<a name="l00757"></a>00757 L[1] = mpc_decoder_bitstream_read(d, 6);
<a name="l00758"></a>00758 L[2] = mpc_decoder_bitstream_read(d, 6);
<a name="l00759"></a>00759 <span class="keywordflow">break</span>;
<a name="l00760"></a>00760 <span class="keywordflow">default</span>:
<a name="l00761"></a>00761 <span class="keywordflow">return</span>;
<a name="l00762"></a>00762 <span class="keywordflow">break</span>;
<a name="l00763"></a>00763 }
<a name="l00764"></a>00764 }
<a name="l00765"></a>00765 <span class="comment">// update Reference for DSCF</span>
<a name="l00766"></a>00766 d-><a class="code" href="structmpc__decoder__t.html#z0_56">DSCF_Reference_L</a>[n] = L[2];
<a name="l00767"></a>00767 }
<a name="l00768"></a>00768 <span class="keywordflow">if</span> (*ResR)
<a name="l00769"></a>00769 {
<a name="l00770"></a>00770 R[2] = d-><a class="code" href="structmpc__decoder__t.html#z0_57">DSCF_Reference_R</a>[n];
<a name="l00771"></a>00771 <span class="comment">/*********** DSCF ************/</span>
<a name="l00772"></a>00772 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_53">DSCF_Flag_R</a>[n]==1)
<a name="l00773"></a>00773 {
<a name="l00774"></a>00774 <span class="keywordflow">switch</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_55">SCFI_R</a>[n])
<a name="l00775"></a>00775 {
<a name="l00776"></a>00776 <span class="keywordflow">case</span> 3:
<a name="l00777"></a>00777 R[0] = R[2] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00778"></a>00778 R[1] = R[0];
<a name="l00779"></a>00779 R[2] = R[1];
<a name="l00780"></a>00780 <span class="keywordflow">break</span>;
<a name="l00781"></a>00781 <span class="keywordflow">case</span> 1:
<a name="l00782"></a>00782 R[0] = R[2] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00783"></a>00783 R[1] = R[0] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00784"></a>00784 R[2] = R[1];
<a name="l00785"></a>00785 <span class="keywordflow">break</span>;
<a name="l00786"></a>00786 <span class="keywordflow">case</span> 2:
<a name="l00787"></a>00787 R[0] = R[2] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00788"></a>00788 R[1] = R[0];
<a name="l00789"></a>00789 R[2] = R[1] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00790"></a>00790 <span class="keywordflow">break</span>;
<a name="l00791"></a>00791 <span class="keywordflow">case</span> 0:
<a name="l00792"></a>00792 R[0] = R[2] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00793"></a>00793 R[1] = R[0] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00794"></a>00794 R[2] = R[1] + mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_36">DSCF_Entropie</a>);
<a name="l00795"></a>00795 <span class="keywordflow">break</span>;
<a name="l00796"></a>00796 <span class="keywordflow">default</span>:
<a name="l00797"></a>00797 <span class="keywordflow">return</span>;
<a name="l00798"></a>00798 <span class="keywordflow">break</span>;
<a name="l00799"></a>00799 }
<a name="l00800"></a>00800 }
<a name="l00801"></a>00801 <span class="comment">/************ SCF ************/</span>
<a name="l00802"></a>00802 <span class="keywordflow">else</span>
<a name="l00803"></a>00803 {
<a name="l00804"></a>00804 <span class="keywordflow">switch</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_55">SCFI_R</a>[n])
<a name="l00805"></a>00805 {
<a name="l00806"></a>00806 <span class="keywordflow">case</span> 3:
<a name="l00807"></a>00807 R[0] = mpc_decoder_bitstream_read(d, 6);
<a name="l00808"></a>00808 R[1] = R[0];
<a name="l00809"></a>00809 R[2] = R[1];
<a name="l00810"></a>00810 <span class="keywordflow">break</span>;
<a name="l00811"></a>00811 <span class="keywordflow">case</span> 1:
<a name="l00812"></a>00812 R[0] = mpc_decoder_bitstream_read(d, 6);
<a name="l00813"></a>00813 R[1] = mpc_decoder_bitstream_read(d, 6);
<a name="l00814"></a>00814 R[2] = R[1];
<a name="l00815"></a>00815 <span class="keywordflow">break</span>;
<a name="l00816"></a>00816 <span class="keywordflow">case</span> 2:
<a name="l00817"></a>00817 R[0] = mpc_decoder_bitstream_read(d, 6);
<a name="l00818"></a>00818 R[1] = R[0];
<a name="l00819"></a>00819 R[2] = mpc_decoder_bitstream_read(d, 6);
<a name="l00820"></a>00820 <span class="keywordflow">break</span>;
<a name="l00821"></a>00821 <span class="keywordflow">case</span> 0:
<a name="l00822"></a>00822 R[0] = mpc_decoder_bitstream_read(d, 6);
<a name="l00823"></a>00823 R[1] = mpc_decoder_bitstream_read(d, 6);
<a name="l00824"></a>00824 R[2] = mpc_decoder_bitstream_read(d, 6);
<a name="l00825"></a>00825 <span class="keywordflow">break</span>;
<a name="l00826"></a>00826 <span class="keywordflow">default</span>:
<a name="l00827"></a>00827 <span class="keywordflow">return</span>;
<a name="l00828"></a>00828 <span class="keywordflow">break</span>;
<a name="l00829"></a>00829 }
<a name="l00830"></a>00830 }
<a name="l00831"></a>00831 <span class="comment">// update Reference for DSCF</span>
<a name="l00832"></a>00832 d-><a class="code" href="structmpc__decoder__t.html#z0_57">DSCF_Reference_R</a>[n] = R[2];
<a name="l00833"></a>00833 }
<a name="l00834"></a>00834 }
<a name="l00835"></a>00835
<a name="l00836"></a>00836 <span class="comment">/**************************** Samples ****************************/</span>
<a name="l00837"></a>00837 ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>;
<a name="l00838"></a>00838 ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>;
<a name="l00839"></a>00839 <span class="keywordflow">for</span> (n=0; n <= Max_used_Band; ++n, ++ResL, ++ResR)
<a name="l00840"></a>00840 {
<a name="l00841"></a>00841 <span class="comment">// setting pointers</span>
<a name="l00842"></a>00842 x1 = d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[*ResL];
<a name="l00843"></a>00843 x2 = d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[*ResR];
<a name="l00844"></a>00844 L = d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a>[n].<a class="code" href="structQuantTyp.html#o0">L</a>;
<a name="l00845"></a>00845 R = d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a>[n].<a class="code" href="structQuantTyp.html#o1">R</a>;
<a name="l00846"></a>00846
<a name="l00847"></a>00847 <span class="keywordflow">if</span> (x1!=NULL || x2!=NULL)
<a name="l00848"></a>00848 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l00849"></a>00849 {
<a name="l00850"></a>00850 <span class="keywordflow">if</span> (x1 != NULL) *L++ = mpc_decoder_huffman_decode_fast(d, x1);
<a name="l00851"></a>00851 <span class="keywordflow">if</span> (x2 != NULL) *R++ = mpc_decoder_huffman_decode_fast(d, x2);
<a name="l00852"></a>00852 }
<a name="l00853"></a>00853
<a name="l00854"></a>00854 <span class="keywordflow">if</span> (*ResL>7 || *ResR>7)
<a name="l00855"></a>00855 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l00856"></a>00856 {
<a name="l00857"></a>00857 <span class="keywordflow">if</span> (*ResL>7) *L++ = (mpc_int32_t)mpc_decoder_bitstream_read(d, <a class="code" href="requant_8h.html#a3">Res_bit</a>[*ResL]) - <a class="code" href="requant_8h.html#a2">Dc</a>[*ResL];
<a name="l00858"></a>00858 <span class="keywordflow">if</span> (*ResR>7) *R++ = (mpc_int32_t)mpc_decoder_bitstream_read(d, <a class="code" href="requant_8h.html#a3">Res_bit</a>[*ResR]) - <a class="code" href="requant_8h.html#a2">Dc</a>[*ResR];
<a name="l00859"></a>00859 }
<a name="l00860"></a>00860 }
<a name="l00861"></a>00861 }
<a name="l00862"></a>00862
<a name="l00863"></a>00863 <span class="comment">/****************************************** SV 7 ******************************************/</span>
<a name="l00864"></a>00864 <span class="keywordtype">void</span>
<a name="l00865"></a><a class="code" href="mpc__decoder_8c.html#a11">00865</a> <a class="code" href="mpc__decoder_8c.html#a11">mpc_decoder_read_bitstream_sv7</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d)
<a name="l00866"></a>00866 {
<a name="l00867"></a>00867 <span class="comment">// these arrays hold decoding results for bundled quantizers (3- and 5-step)</span>
<a name="l00868"></a>00868 <span class="comment">/*static*/</span> mpc_int32_t idx30[] = { -1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1};
<a name="l00869"></a>00869 <span class="comment">/*static*/</span> mpc_int32_t idx31[] = { -1,-1,-1, 0, 0, 0, 1, 1, 1,-1,-1,-1, 0, 0, 0, 1, 1, 1,-1,-1,-1, 0, 0, 0, 1, 1, 1};
<a name="l00870"></a>00870 <span class="comment">/*static*/</span> mpc_int32_t idx32[] = { -1,-1,-1,-1,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1};
<a name="l00871"></a>00871 <span class="comment">/*static*/</span> mpc_int32_t idx50[] = { -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2};
<a name="l00872"></a>00872 <span class="comment">/*static*/</span> mpc_int32_t idx51[] = { -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2};
<a name="l00873"></a>00873
<a name="l00874"></a>00874 mpc_int32_t n,k;
<a name="l00875"></a>00875 mpc_int32_t Max_used_Band=0;
<a name="l00876"></a>00876 <span class="keyword">const</span> <a class="code" href="structhuffman__type__t.html">HuffmanTyp</a> *Table;
<a name="l00877"></a>00877 mpc_int32_t idx;
<a name="l00878"></a>00878 mpc_int32_t *L ,*R;
<a name="l00879"></a>00879 mpc_int32_t *ResL,*ResR;
<a name="l00880"></a>00880 mpc_uint32_t tmp;
<a name="l00881"></a>00881
<a name="l00882"></a>00882 <span class="comment">/***************************** Header *****************************/</span>
<a name="l00883"></a>00883 ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>;
<a name="l00884"></a>00884 ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>;
<a name="l00885"></a>00885
<a name="l00886"></a>00886 <span class="comment">// first subband</span>
<a name="l00887"></a>00887 *ResL = mpc_decoder_bitstream_read(d, 4);
<a name="l00888"></a>00888 *ResR = mpc_decoder_bitstream_read(d, 4);
<a name="l00889"></a>00889 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_12">MS_used</a> && !(*ResL==0 && *ResR==0)) {
<a name="l00890"></a>00890 d-><a class="code" href="structmpc__decoder__t.html#z0_58">MS_Flag</a>[0] = mpc_decoder_bitstream_read(d, 1);
<a name="l00891"></a>00891 }
<a name="l00892"></a>00892
<a name="l00893"></a>00893 <span class="comment">// consecutive subbands</span>
<a name="l00894"></a>00894 ++ResL; ++ResR; <span class="comment">// increase pointers</span>
<a name="l00895"></a>00895 <span class="keywordflow">for</span> (n=1; n <= d->Max_Band; ++n, ++ResL, ++ResR)
<a name="l00896"></a>00896 {
<a name="l00897"></a>00897 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_23">HuffHdr</a>);
<a name="l00898"></a>00898 *ResL = (idx!=4) ? *(ResL-1) + idx : (int) mpc_decoder_bitstream_read(d, 4);
<a name="l00899"></a>00899
<a name="l00900"></a>00900 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_23">HuffHdr</a>);
<a name="l00901"></a>00901 *ResR = (idx!=4) ? *(ResR-1) + idx : (int) mpc_decoder_bitstream_read(d, 4);
<a name="l00902"></a>00902
<a name="l00903"></a>00903 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_12">MS_used</a> && !(*ResL==0 && *ResR==0)) {
<a name="l00904"></a>00904 d-><a class="code" href="structmpc__decoder__t.html#z0_58">MS_Flag</a>[n] = mpc_decoder_bitstream_read(d, 1);
<a name="l00905"></a>00905 }
<a name="l00906"></a>00906
<a name="l00907"></a>00907 <span class="comment">// only perform following procedures up to the maximum non-zero subband</span>
<a name="l00908"></a>00908 <span class="keywordflow">if</span> (*ResL!=0 || *ResR!=0) {
<a name="l00909"></a>00909 Max_used_Band = n;
<a name="l00910"></a>00910 }
<a name="l00911"></a>00911 }
<a name="l00912"></a>00912 <span class="comment">/****************************** SCFI ******************************/</span>
<a name="l00913"></a>00913 L = d-><a class="code" href="structmpc__decoder__t.html#z0_54">SCFI_L</a>;
<a name="l00914"></a>00914 R = d-><a class="code" href="structmpc__decoder__t.html#z0_55">SCFI_R</a>;
<a name="l00915"></a>00915 ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>;
<a name="l00916"></a>00916 ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>;
<a name="l00917"></a>00917 <span class="keywordflow">for</span> (n=0; n <= Max_used_Band; ++n, ++L, ++R, ++ResL, ++ResR) {
<a name="l00918"></a>00918 <span class="keywordflow">if</span> (*ResL) *L = mpc_decoder_huffman_decode_faster(d, d-><a class="code" href="structmpc__decoder__t.html#z0_24">HuffSCFI</a>);
<a name="l00919"></a>00919 <span class="keywordflow">if</span> (*ResR) *R = mpc_decoder_huffman_decode_faster(d, d-><a class="code" href="structmpc__decoder__t.html#z0_24">HuffSCFI</a>);
<a name="l00920"></a>00920 }
<a name="l00921"></a>00921
<a name="l00922"></a>00922 <span class="comment">/**************************** SCF/DSCF ****************************/</span>
<a name="l00923"></a>00923 ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>;
<a name="l00924"></a>00924 ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>;
<a name="l00925"></a>00925 L = d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a>[0];
<a name="l00926"></a>00926 R = d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a>[0];
<a name="l00927"></a>00927 <span class="keywordflow">for</span> (n=0; n<=Max_used_Band; ++n, ++ResL, ++ResR, L+=3, R+=3) {
<a name="l00928"></a>00928 <span class="keywordflow">if</span> (*ResL)
<a name="l00929"></a>00929 {
<a name="l00930"></a>00930 L[2] = d-><a class="code" href="structmpc__decoder__t.html#z0_56">DSCF_Reference_L</a>[n];
<a name="l00931"></a>00931 <span class="keywordflow">switch</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_54">SCFI_L</a>[n])
<a name="l00932"></a>00932 {
<a name="l00933"></a>00933 <span class="keywordflow">case</span> 1:
<a name="l00934"></a>00934 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00935"></a>00935 L[0] = (idx!=8) ? L[2] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00936"></a>00936 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00937"></a>00937 L[1] = (idx!=8) ? L[0] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00938"></a>00938 L[2] = L[1];
<a name="l00939"></a>00939 <span class="keywordflow">break</span>;
<a name="l00940"></a>00940 <span class="keywordflow">case</span> 3:
<a name="l00941"></a>00941 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00942"></a>00942 L[0] = (idx!=8) ? L[2] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00943"></a>00943 L[1] = L[0];
<a name="l00944"></a>00944 L[2] = L[1];
<a name="l00945"></a>00945 <span class="keywordflow">break</span>;
<a name="l00946"></a>00946 <span class="keywordflow">case</span> 2:
<a name="l00947"></a>00947 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00948"></a>00948 L[0] = (idx!=8) ? L[2] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00949"></a>00949 L[1] = L[0];
<a name="l00950"></a>00950 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00951"></a>00951 L[2] = (idx!=8) ? L[1] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00952"></a>00952 <span class="keywordflow">break</span>;
<a name="l00953"></a>00953 <span class="keywordflow">case</span> 0:
<a name="l00954"></a>00954 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00955"></a>00955 L[0] = (idx!=8) ? L[2] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00956"></a>00956 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00957"></a>00957 L[1] = (idx!=8) ? L[0] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00958"></a>00958 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00959"></a>00959 L[2] = (idx!=8) ? L[1] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00960"></a>00960 <span class="keywordflow">break</span>;
<a name="l00961"></a>00961 <span class="keywordflow">default</span>:
<a name="l00962"></a>00962 <span class="keywordflow">return</span>;
<a name="l00963"></a>00963 <span class="keywordflow">break</span>;
<a name="l00964"></a>00964 }
<a name="l00965"></a>00965 <span class="comment">// update Reference for DSCF</span>
<a name="l00966"></a>00966 d-><a class="code" href="structmpc__decoder__t.html#z0_56">DSCF_Reference_L</a>[n] = L[2];
<a name="l00967"></a>00967 }
<a name="l00968"></a>00968 <span class="keywordflow">if</span> (*ResR)
<a name="l00969"></a>00969 {
<a name="l00970"></a>00970 R[2] = d-><a class="code" href="structmpc__decoder__t.html#z0_57">DSCF_Reference_R</a>[n];
<a name="l00971"></a>00971 <span class="keywordflow">switch</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_55">SCFI_R</a>[n])
<a name="l00972"></a>00972 {
<a name="l00973"></a>00973 <span class="keywordflow">case</span> 1:
<a name="l00974"></a>00974 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00975"></a>00975 R[0] = (idx!=8) ? R[2] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00976"></a>00976 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00977"></a>00977 R[1] = (idx!=8) ? R[0] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00978"></a>00978 R[2] = R[1];
<a name="l00979"></a>00979 <span class="keywordflow">break</span>;
<a name="l00980"></a>00980 <span class="keywordflow">case</span> 3:
<a name="l00981"></a>00981 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00982"></a>00982 R[0] = (idx!=8) ? R[2] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00983"></a>00983 R[1] = R[0];
<a name="l00984"></a>00984 R[2] = R[1];
<a name="l00985"></a>00985 <span class="keywordflow">break</span>;
<a name="l00986"></a>00986 <span class="keywordflow">case</span> 2:
<a name="l00987"></a>00987 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00988"></a>00988 R[0] = (idx!=8) ? R[2] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00989"></a>00989 R[1] = R[0];
<a name="l00990"></a>00990 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00991"></a>00991 R[2] = (idx!=8) ? R[1] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00992"></a>00992 <span class="keywordflow">break</span>;
<a name="l00993"></a>00993 <span class="keywordflow">case</span> 0:
<a name="l00994"></a>00994 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00995"></a>00995 R[0] = (idx!=8) ? R[2] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00996"></a>00996 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00997"></a>00997 R[1] = (idx!=8) ? R[0] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l00998"></a>00998 idx = mpc_decoder_huffman_decode_fast(d, d-><a class="code" href="structmpc__decoder__t.html#z0_25">HuffDSCF</a>);
<a name="l00999"></a>00999 R[2] = (idx!=8) ? R[1] + idx : (int) mpc_decoder_bitstream_read(d, 6);
<a name="l01000"></a>01000 <span class="keywordflow">break</span>;
<a name="l01001"></a>01001 <span class="keywordflow">default</span>:
<a name="l01002"></a>01002 <span class="keywordflow">return</span>;
<a name="l01003"></a>01003 <span class="keywordflow">break</span>;
<a name="l01004"></a>01004 }
<a name="l01005"></a>01005 <span class="comment">// update Reference for DSCF</span>
<a name="l01006"></a>01006 d-><a class="code" href="structmpc__decoder__t.html#z0_57">DSCF_Reference_R</a>[n] = R[2];
<a name="l01007"></a>01007 }
<a name="l01008"></a>01008 }
<a name="l01009"></a>01009 <span class="comment">/***************************** Samples ****************************/</span>
<a name="l01010"></a>01010 ResL = d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a>;
<a name="l01011"></a>01011 ResR = d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a>;
<a name="l01012"></a>01012 L = d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a>[0].<a class="code" href="structQuantTyp.html#o0">L</a>;
<a name="l01013"></a>01013 R = d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a>[0].<a class="code" href="structQuantTyp.html#o1">R</a>;
<a name="l01014"></a>01014 <span class="keywordflow">for</span> (n=0; n <= Max_used_Band; ++n, ++ResL, ++ResR, L+=36, R+=36)
<a name="l01015"></a>01015 {
<a name="l01016"></a>01016 <span class="comment">/************** links **************/</span>
<a name="l01017"></a>01017 <span class="keywordflow">switch</span> (*ResL)
<a name="l01018"></a>01018 {
<a name="l01019"></a>01019 <span class="keywordflow">case</span> -2: <span class="keywordflow">case</span> -3: <span class="keywordflow">case</span> -4: <span class="keywordflow">case</span> -5: <span class="keywordflow">case</span> -6: <span class="keywordflow">case</span> -7: <span class="keywordflow">case</span> -8: <span class="keywordflow">case</span> -9:
<a name="l01020"></a>01020 <span class="keywordflow">case</span> -10: <span class="keywordflow">case</span> -11: <span class="keywordflow">case</span> -12: <span class="keywordflow">case</span> -13: <span class="keywordflow">case</span> -14: <span class="keywordflow">case</span> -15: <span class="keywordflow">case</span> -16: <span class="keywordflow">case</span> -17:
<a name="l01021"></a>01021 L += 36;
<a name="l01022"></a>01022 <span class="keywordflow">break</span>;
<a name="l01023"></a>01023 <span class="keywordflow">case</span> -1:
<a name="l01024"></a>01024 <span class="keywordflow">for</span> (k=0; k<36; k++ ) {
<a name="l01025"></a>01025 tmp = <a class="code" href="internal_8h.html#a3">mpc_random_int</a>(d);
<a name="l01026"></a>01026 *L++ = ((tmp >> 24) & 0xFF) + ((tmp >> 16) & 0xFF) + ((tmp >> 8) & 0xFF) + ((tmp >> 0) & 0xFF) - 510;
<a name="l01027"></a>01027 }
<a name="l01028"></a>01028 <span class="keywordflow">break</span>;
<a name="l01029"></a>01029 <span class="keywordflow">case</span> 0:
<a name="l01030"></a>01030 L += 36;<span class="comment">// increase pointer</span>
<a name="l01031"></a>01031 <span class="keywordflow">break</span>;
<a name="l01032"></a>01032 <span class="keywordflow">case</span> 1:
<a name="l01033"></a>01033 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][1];
<a name="l01034"></a>01034 <span class="keywordflow">for</span> (k=0; k<12; ++k)
<a name="l01035"></a>01035 {
<a name="l01036"></a>01036 idx = mpc_decoder_huffman_decode_fast(d, Table);
<a name="l01037"></a>01037 *L++ = idx30[idx];
<a name="l01038"></a>01038 *L++ = idx31[idx];
<a name="l01039"></a>01039 *L++ = idx32[idx];
<a name="l01040"></a>01040 }
<a name="l01041"></a>01041 <span class="keywordflow">break</span>;
<a name="l01042"></a>01042 <span class="keywordflow">case</span> 2:
<a name="l01043"></a>01043 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][2];
<a name="l01044"></a>01044 <span class="keywordflow">for</span> (k=0; k<18; ++k)
<a name="l01045"></a>01045 {
<a name="l01046"></a>01046 idx = mpc_decoder_huffman_decode_fast(d, Table);
<a name="l01047"></a>01047 *L++ = idx50[idx];
<a name="l01048"></a>01048 *L++ = idx51[idx];
<a name="l01049"></a>01049 }
<a name="l01050"></a>01050 <span class="keywordflow">break</span>;
<a name="l01051"></a>01051 <span class="keywordflow">case</span> 3:
<a name="l01052"></a>01052 <span class="keywordflow">case</span> 4:
<a name="l01053"></a>01053 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][*ResL];
<a name="l01054"></a>01054 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l01055"></a>01055 *L++ = mpc_decoder_huffman_decode_faster(d, Table);
<a name="l01056"></a>01056 <span class="keywordflow">break</span>;
<a name="l01057"></a>01057 <span class="keywordflow">case</span> 5:
<a name="l01058"></a>01058 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][*ResL];
<a name="l01059"></a>01059 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l01060"></a>01060 *L++ = mpc_decoder_huffman_decode_fast(d, Table);
<a name="l01061"></a>01061 <span class="keywordflow">break</span>;
<a name="l01062"></a>01062 <span class="keywordflow">case</span> 6:
<a name="l01063"></a>01063 <span class="keywordflow">case</span> 7:
<a name="l01064"></a>01064 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][*ResL];
<a name="l01065"></a>01065 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l01066"></a>01066 *L++ = mpc_decoder_huffman_decode(d, Table);
<a name="l01067"></a>01067 <span class="keywordflow">break</span>;
<a name="l01068"></a>01068 <span class="keywordflow">case</span> 8: <span class="keywordflow">case</span> 9: <span class="keywordflow">case</span> 10: <span class="keywordflow">case</span> 11: <span class="keywordflow">case</span> 12: <span class="keywordflow">case</span> 13: <span class="keywordflow">case</span> 14: <span class="keywordflow">case</span> 15: <span class="keywordflow">case</span> 16: <span class="keywordflow">case</span> 17:
<a name="l01069"></a>01069 tmp = <a class="code" href="requant_8h.html#a2">Dc</a>[*ResL];
<a name="l01070"></a>01070 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l01071"></a>01071 *L++ = (mpc_int32_t)mpc_decoder_bitstream_read(d, <a class="code" href="requant_8h.html#a3">Res_bit</a>[*ResL]) - tmp;
<a name="l01072"></a>01072 <span class="keywordflow">break</span>;
<a name="l01073"></a>01073 <span class="keywordflow">default</span>:
<a name="l01074"></a>01074 <span class="keywordflow">return</span>;
<a name="l01075"></a>01075 }
<a name="l01076"></a>01076 <span class="comment">/************** rechts **************/</span>
<a name="l01077"></a>01077 <span class="keywordflow">switch</span> (*ResR)
<a name="l01078"></a>01078 {
<a name="l01079"></a>01079 <span class="keywordflow">case</span> -2: <span class="keywordflow">case</span> -3: <span class="keywordflow">case</span> -4: <span class="keywordflow">case</span> -5: <span class="keywordflow">case</span> -6: <span class="keywordflow">case</span> -7: <span class="keywordflow">case</span> -8: <span class="keywordflow">case</span> -9:
<a name="l01080"></a>01080 <span class="keywordflow">case</span> -10: <span class="keywordflow">case</span> -11: <span class="keywordflow">case</span> -12: <span class="keywordflow">case</span> -13: <span class="keywordflow">case</span> -14: <span class="keywordflow">case</span> -15: <span class="keywordflow">case</span> -16: <span class="keywordflow">case</span> -17:
<a name="l01081"></a>01081 R += 36;
<a name="l01082"></a>01082 <span class="keywordflow">break</span>;
<a name="l01083"></a>01083 <span class="keywordflow">case</span> -1:
<a name="l01084"></a>01084 <span class="keywordflow">for</span> (k=0; k<36; k++ ) {
<a name="l01085"></a>01085 tmp = <a class="code" href="internal_8h.html#a3">mpc_random_int</a>(d);
<a name="l01086"></a>01086 *R++ = ((tmp >> 24) & 0xFF) + ((tmp >> 16) & 0xFF) + ((tmp >> 8) & 0xFF) + ((tmp >> 0) & 0xFF) - 510;
<a name="l01087"></a>01087 }
<a name="l01088"></a>01088 <span class="keywordflow">break</span>;
<a name="l01089"></a>01089 <span class="keywordflow">case</span> 0:
<a name="l01090"></a>01090 R += 36;<span class="comment">// increase pointer</span>
<a name="l01091"></a>01091 <span class="keywordflow">break</span>;
<a name="l01092"></a>01092 <span class="keywordflow">case</span> 1:
<a name="l01093"></a>01093 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][1];
<a name="l01094"></a>01094 <span class="keywordflow">for</span> (k=0; k<12; ++k)
<a name="l01095"></a>01095 {
<a name="l01096"></a>01096 idx = mpc_decoder_huffman_decode_fast(d, Table);
<a name="l01097"></a>01097 *R++ = idx30[idx];
<a name="l01098"></a>01098 *R++ = idx31[idx];
<a name="l01099"></a>01099 *R++ = idx32[idx];
<a name="l01100"></a>01100 }
<a name="l01101"></a>01101 <span class="keywordflow">break</span>;
<a name="l01102"></a>01102 <span class="keywordflow">case</span> 2:
<a name="l01103"></a>01103 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][2];
<a name="l01104"></a>01104 <span class="keywordflow">for</span> (k=0; k<18; ++k)
<a name="l01105"></a>01105 {
<a name="l01106"></a>01106 idx = mpc_decoder_huffman_decode_fast(d, Table);
<a name="l01107"></a>01107 *R++ = idx50[idx];
<a name="l01108"></a>01108 *R++ = idx51[idx];
<a name="l01109"></a>01109 }
<a name="l01110"></a>01110 <span class="keywordflow">break</span>;
<a name="l01111"></a>01111 <span class="keywordflow">case</span> 3:
<a name="l01112"></a>01112 <span class="keywordflow">case</span> 4:
<a name="l01113"></a>01113 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][*ResR];
<a name="l01114"></a>01114 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l01115"></a>01115 *R++ = mpc_decoder_huffman_decode_faster(d, Table);
<a name="l01116"></a>01116 <span class="keywordflow">break</span>;
<a name="l01117"></a>01117 <span class="keywordflow">case</span> 5:
<a name="l01118"></a>01118 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][*ResR];
<a name="l01119"></a>01119 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l01120"></a>01120 *R++ = mpc_decoder_huffman_decode_fast(d, Table);
<a name="l01121"></a>01121 <span class="keywordflow">break</span>;
<a name="l01122"></a>01122 <span class="keywordflow">case</span> 6:
<a name="l01123"></a>01123 <span class="keywordflow">case</span> 7:
<a name="l01124"></a>01124 Table = d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[mpc_decoder_bitstream_read(d, 1)][*ResR];
<a name="l01125"></a>01125 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l01126"></a>01126 *R++ = mpc_decoder_huffman_decode(d, Table);
<a name="l01127"></a>01127 <span class="keywordflow">break</span>;
<a name="l01128"></a>01128 <span class="keywordflow">case</span> 8: <span class="keywordflow">case</span> 9: <span class="keywordflow">case</span> 10: <span class="keywordflow">case</span> 11: <span class="keywordflow">case</span> 12: <span class="keywordflow">case</span> 13: <span class="keywordflow">case</span> 14: <span class="keywordflow">case</span> 15: <span class="keywordflow">case</span> 16: <span class="keywordflow">case</span> 17:
<a name="l01129"></a>01129 tmp = <a class="code" href="requant_8h.html#a2">Dc</a>[*ResR];
<a name="l01130"></a>01130 <span class="keywordflow">for</span> (k=0; k<36; ++k)
<a name="l01131"></a>01131 *R++ = (mpc_int32_t)mpc_decoder_bitstream_read(d, <a class="code" href="requant_8h.html#a3">Res_bit</a>[*ResR]) - tmp;
<a name="l01132"></a>01132 <span class="keywordflow">break</span>;
<a name="l01133"></a>01133 <span class="keywordflow">default</span>:
<a name="l01134"></a>01134 <span class="keywordflow">return</span>;
<a name="l01135"></a>01135 }
<a name="l01136"></a>01136 }
<a name="l01137"></a>01137 }
<a name="l01138"></a>01138
<a name="l01139"></a><a class="code" href="mpc__decoder_8c.html#a34">01139</a> <span class="keywordtype">void</span> <a class="code" href="mpcdec_8h.html#a13">mpc_decoder_setup</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <a class="code" href="structmpc__reader__t.html">mpc_reader</a> *r)
<a name="l01140"></a>01140 {
<a name="l01141"></a>01141 d-><a class="code" href="structmpc__decoder__t.html#o0">r</a> = r;
<a name="l01142"></a>01142
<a name="l01143"></a>01143 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[0][0] = 0;
<a name="l01144"></a>01144 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[1][0] = 0;
<a name="l01145"></a>01145 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[0][1] = d-><a class="code" href="structmpc__decoder__t.html#z0_27">HuffQ1</a>[0];
<a name="l01146"></a>01146 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[1][1] = d-><a class="code" href="structmpc__decoder__t.html#z0_27">HuffQ1</a>[1];
<a name="l01147"></a>01147 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[0][2] = d-><a class="code" href="structmpc__decoder__t.html#z0_28">HuffQ2</a>[0];
<a name="l01148"></a>01148 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[1][2] = d-><a class="code" href="structmpc__decoder__t.html#z0_28">HuffQ2</a>[1];
<a name="l01149"></a>01149 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[0][3] = d-><a class="code" href="structmpc__decoder__t.html#z0_29">HuffQ3</a>[0];
<a name="l01150"></a>01150 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[1][3] = d-><a class="code" href="structmpc__decoder__t.html#z0_29">HuffQ3</a>[1];
<a name="l01151"></a>01151 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[0][4] = d-><a class="code" href="structmpc__decoder__t.html#z0_30">HuffQ4</a>[0];
<a name="l01152"></a>01152 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[1][4] = d-><a class="code" href="structmpc__decoder__t.html#z0_30">HuffQ4</a>[1];
<a name="l01153"></a>01153 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[0][5] = d-><a class="code" href="structmpc__decoder__t.html#z0_31">HuffQ5</a>[0];
<a name="l01154"></a>01154 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[1][5] = d-><a class="code" href="structmpc__decoder__t.html#z0_31">HuffQ5</a>[1];
<a name="l01155"></a>01155 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[0][6] = d-><a class="code" href="structmpc__decoder__t.html#z0_32">HuffQ6</a>[0];
<a name="l01156"></a>01156 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[1][6] = d-><a class="code" href="structmpc__decoder__t.html#z0_32">HuffQ6</a>[1];
<a name="l01157"></a>01157 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[0][7] = d-><a class="code" href="structmpc__decoder__t.html#z0_33">HuffQ7</a>[0];
<a name="l01158"></a>01158 d-><a class="code" href="structmpc__decoder__t.html#z0_26">HuffQ</a>[1][7] = d-><a class="code" href="structmpc__decoder__t.html#z0_33">HuffQ7</a>[1];
<a name="l01159"></a>01159
<a name="l01160"></a>01160 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[0] = NULL;
<a name="l01161"></a>01161 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[1] = d-><a class="code" href="structmpc__decoder__t.html#z0_40">Entropie_1</a>;
<a name="l01162"></a>01162 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[2] = d-><a class="code" href="structmpc__decoder__t.html#z0_41">Entropie_2</a>;
<a name="l01163"></a>01163 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[3] = d-><a class="code" href="structmpc__decoder__t.html#z0_42">Entropie_3</a>;
<a name="l01164"></a>01164 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[4] = d-><a class="code" href="structmpc__decoder__t.html#z0_43">Entropie_4</a>;
<a name="l01165"></a>01165 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[5] = d-><a class="code" href="structmpc__decoder__t.html#z0_44">Entropie_5</a>;
<a name="l01166"></a>01166 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[6] = d-><a class="code" href="structmpc__decoder__t.html#z0_45">Entropie_6</a>;
<a name="l01167"></a>01167 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[7] = d-><a class="code" href="structmpc__decoder__t.html#z0_46">Entropie_7</a>;
<a name="l01168"></a>01168 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[8] = NULL;
<a name="l01169"></a>01169 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[9] = NULL;
<a name="l01170"></a>01170 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[10] = NULL;
<a name="l01171"></a>01171 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[11] = NULL;
<a name="l01172"></a>01172 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[12] = NULL;
<a name="l01173"></a>01173 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[13] = NULL;
<a name="l01174"></a>01174 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[14] = NULL;
<a name="l01175"></a>01175 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[15] = NULL;
<a name="l01176"></a>01176 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[16] = NULL;
<a name="l01177"></a>01177 d-><a class="code" href="structmpc__decoder__t.html#z0_34">SampleHuff</a>[17] = NULL;
<a name="l01178"></a>01178
<a name="l01179"></a>01179 d-><a class="code" href="structmpc__decoder__t.html#z0_17">EQ_activated</a> = 0;
<a name="l01180"></a>01180 d-><a class="code" href="structmpc__decoder__t.html#z0_14">MPCHeaderPos</a> = 0;
<a name="l01181"></a>01181 d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a> = 0;
<a name="l01182"></a>01182 d-><a class="code" href="structmpc__decoder__t.html#z0_12">MS_used</a> = 0;
<a name="l01183"></a>01183 d-><a class="code" href="structmpc__decoder__t.html#z0_5">FwdJumpInfo</a> = 0;
<a name="l01184"></a>01184 d-><a class="code" href="structmpc__decoder__t.html#z0_6">ActDecodePos</a> = 0;
<a name="l01185"></a>01185 d-><a class="code" href="structmpc__decoder__t.html#z0_7">FrameWasValid</a> = 0;
<a name="l01186"></a>01186 d-><a class="code" href="structmpc__decoder__t.html#z0_9">OverallFrames</a> = 0;
<a name="l01187"></a>01187 d-><a class="code" href="structmpc__decoder__t.html#z0_8">DecodedFrames</a> = 0;
<a name="l01188"></a>01188 d-><a class="code" href="structmpc__decoder__t.html#z0_15">LastValidSamples</a> = 0;
<a name="l01189"></a>01189 d-><a class="code" href="structmpc__decoder__t.html#z0_16">TrueGaplessPresent</a> = 0;
<a name="l01190"></a>01190 d-><a class="code" href="structmpc__decoder__t.html#z0_18">WordsRead</a> = 0;
<a name="l01191"></a>01191 d-><a class="code" href="structmpc__decoder__t.html#z0_13">Max_Band</a> = 0;
<a name="l01192"></a>01192 d-><a class="code" href="structmpc__decoder__t.html#z0_10">SampleRate</a> = 0;
<a name="l01193"></a>01193 <span class="comment">// clips = 0;</span>
<a name="l01194"></a>01194 d-><a class="code" href="structmpc__decoder__t.html#z0_19">__r1</a> = 1;
<a name="l01195"></a>01195 d-><a class="code" href="structmpc__decoder__t.html#z0_20">__r2</a> = 1;
<a name="l01196"></a>01196
<a name="l01197"></a>01197 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = 0;
<a name="l01198"></a>01198 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> = 0;
<a name="l01199"></a>01199 d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = 0;
<a name="l01200"></a>01200 d-><a class="code" href="structmpc__decoder__t.html#z0_18">WordsRead</a> = 0;
<a name="l01201"></a>01201 d-><a class="code" href="structmpc__decoder__t.html#z0_13">Max_Band</a> = 0;
<a name="l01202"></a>01202
<a name="l01203"></a>01203 <a class="code" href="internal_8h.html#a4">mpc_decoder_initialisiere_quantisierungstabellen</a>(d, 1.0f);
<a name="l01204"></a>01204 <a class="code" href="huffman_8h.html#a2">mpc_decoder_init_huffman_sv6</a>(d);
<a name="l01205"></a>01205 <a class="code" href="huffman_8h.html#a4">mpc_decoder_init_huffman_sv7</a>(d);
<a name="l01206"></a>01206 }
<a name="l01207"></a>01207
<a name="l01208"></a><a class="code" href="mpc__decoder_8c.html#a35">01208</a> <span class="keywordtype">void</span> <a class="code" href="mpcdec_8h.html#a15">mpc_decoder_set_streaminfo</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <a class="code" href="structmpc__streaminfo.html">mpc_streaminfo</a> *si)
<a name="l01209"></a>01209 {
<a name="l01210"></a>01210 mpc_decoder_reset_synthesis(d);
<a name="l01211"></a>01211 mpc_decoder_reset_globals(d);
<a name="l01212"></a>01212
<a name="l01213"></a>01213 d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a> = si-><a class="code" href="structmpc__streaminfo.html#z1_3">stream_version</a>;
<a name="l01214"></a>01214 d-><a class="code" href="structmpc__decoder__t.html#z0_12">MS_used</a> = si-><a class="code" href="structmpc__streaminfo.html#z1_10">ms</a>;
<a name="l01215"></a>01215 d-><a class="code" href="structmpc__decoder__t.html#z0_13">Max_Band</a> = si-><a class="code" href="structmpc__streaminfo.html#z1_8">max_band</a>;
<a name="l01216"></a>01216 d-><a class="code" href="structmpc__decoder__t.html#z0_9">OverallFrames</a> = si-><a class="code" href="structmpc__streaminfo.html#z1_6">frames</a>;
<a name="l01217"></a>01217 d-><a class="code" href="structmpc__decoder__t.html#z0_14">MPCHeaderPos</a> = si-><a class="code" href="structmpc__streaminfo.html#z1_2">header_position</a>;
<a name="l01218"></a>01218 d-><a class="code" href="structmpc__decoder__t.html#z0_15">LastValidSamples</a> = si-><a class="code" href="structmpc__streaminfo.html#z3_1">last_frame_samples</a>;
<a name="l01219"></a>01219 d-><a class="code" href="structmpc__decoder__t.html#z0_16">TrueGaplessPresent</a> = si-><a class="code" href="structmpc__streaminfo.html#z3_0">is_true_gapless</a>;
<a name="l01220"></a>01220 d-><a class="code" href="structmpc__decoder__t.html#z0_10">SampleRate</a> = (mpc_int32_t)si-><a class="code" href="structmpc__streaminfo.html#z1_0">sample_freq</a>;
<a name="l01221"></a>01221
<a name="l01222"></a>01222 d-><a class="code" href="structmpc__decoder__t.html#z0_4">samples_to_skip</a> = MPC_DECODER_SYNTH_DELAY;
<a name="l01223"></a>01223 }
<a name="l01224"></a>01224
<a name="l01225"></a><a class="code" href="mpc__decoder_8c.html#a36">01225</a> mpc_bool_t <a class="code" href="mpcdec_8h.html#a14">mpc_decoder_initialize</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <a class="code" href="structmpc__streaminfo.html">mpc_streaminfo</a> *si)
<a name="l01226"></a>01226 {
<a name="l01227"></a>01227 <a class="code" href="mpcdec_8h.html#a15">mpc_decoder_set_streaminfo</a>(d, si);
<a name="l01228"></a>01228
<a name="l01229"></a>01229 <span class="comment">// AB: setting position to the beginning of the data-bitstream</span>
<a name="l01230"></a>01230 <span class="keywordflow">switch</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a>) {
<a name="l01231"></a>01231 <span class="keywordflow">case</span> 0x04: f_seek(d, 4 + d-><a class="code" href="structmpc__decoder__t.html#z0_14">MPCHeaderPos</a>); d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> = 16; <span class="keywordflow">break</span>; <span class="comment">// Geht auch ber eine der Helperfunktionen</span>
<a name="l01232"></a>01232 <span class="keywordflow">case</span> 0x05:
<a name="l01233"></a>01233 <span class="keywordflow">case</span> 0x06: f_seek(d, 8 + d-><a class="code" href="structmpc__decoder__t.html#z0_14">MPCHeaderPos</a>); d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> = 0; <span class="keywordflow">break</span>;
<a name="l01234"></a>01234 <span class="keywordflow">case</span> 0x07:
<a name="l01235"></a>01235 <span class="keywordflow">case</span> 0x17: <span class="comment">/*f_seek ( 24 + d->MPCHeaderPos );*/</span> d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> = 8; <span class="keywordflow">break</span>;
<a name="l01236"></a>01236 <span class="keywordflow">default</span>: <span class="keywordflow">return</span> FALSE;
<a name="l01237"></a>01237 }
<a name="l01238"></a>01238
<a name="l01239"></a>01239 <span class="comment">// AB: fill buffer and initialize decoder</span>
<a name="l01240"></a>01240 f_read_dword(d, d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>, MEMSIZE );
<a name="l01241"></a>01241 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = 0];
<a name="l01242"></a>01242
<a name="l01243"></a>01243 <span class="keywordflow">return</span> TRUE;
<a name="l01244"></a>01244 }
<a name="l01245"></a>01245
<a name="l01246"></a>01246 <span class="comment">//---------------------------------------------------------------</span>
<a name="l01247"></a>01247 <span class="comment">// will seek from the beginning of the file to the desired</span>
<a name="l01248"></a>01248 <span class="comment">// position in ms (given by seek_needed)</span>
<a name="l01249"></a>01249 <span class="comment">//---------------------------------------------------------------</span>
<a name="l01250"></a>01250 <span class="preprocessor">#if 0</span>
<a name="l01251"></a>01251 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l01252"></a>01252 helper1(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_uint32_t bitpos)
<a name="l01253"></a>01253 {
<a name="l01254"></a>01254 f_seek(d, (bitpos >> 5) * 4 + d-><a class="code" href="structmpc__decoder__t.html#z0_14">MPCHeaderPos</a>);
<a name="l01255"></a>01255 f_read_dword(d, d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>, 2);
<a name="l01256"></a>01256 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = 0];
<a name="l01257"></a>01257 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> = bitpos & 31;
<a name="l01258"></a>01258 }
<a name="l01259"></a>01259 <span class="preprocessor">#endif</span>
<a name="l01260"></a>01260 <span class="preprocessor"></span>
<a name="l01261"></a>01261 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l01262"></a>01262 helper2(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_uint32_t bitpos)
<a name="l01263"></a>01263 {
<a name="l01264"></a>01264 f_seek(d, (bitpos>>5) * 4 + d-><a class="code" href="structmpc__decoder__t.html#z0_14">MPCHeaderPos</a>);
<a name="l01265"></a>01265 f_read_dword(d, d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>, MEMSIZE);
<a name="l01266"></a>01266 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = 0];
<a name="l01267"></a>01267 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> = bitpos & 31;
<a name="l01268"></a>01268 }
<a name="l01269"></a>01269
<a name="l01270"></a>01270 <span class="preprocessor">#if 0</span>
<a name="l01271"></a>01271 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l01272"></a>01272 helper3(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_uint32_t bitpos, mpc_uint32_t* buffoffs)
<a name="l01273"></a>01273 {
<a name="l01274"></a>01274 d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a> = bitpos & 31;
<a name="l01275"></a>01275 bitpos >>= 5;
<a name="l01276"></a>01276 <span class="keywordflow">if</span> ((mpc_uint32_t)(bitpos - *buffoffs) >= MEMSIZE - 2) {
<a name="l01277"></a>01277 *buffoffs = bitpos;
<a name="l01278"></a>01278 f_seek(d, bitpos * 4L + d-><a class="code" href="structmpc__decoder__t.html#z0_14">MPCHeaderPos</a>);
<a name="l01279"></a>01279 f_read_dword(d, d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>, MEMSIZE );
<a name="l01280"></a>01280 }
<a name="l01281"></a>01281 d-><a class="code" href="structmpc__decoder__t.html#z0_0">dword</a> = d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a>[d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> = bitpos - *buffoffs ];
<a name="l01282"></a>01282 }
<a name="l01283"></a>01283 <span class="preprocessor">#endif</span>
<a name="l01284"></a>01284 <span class="preprocessor"></span>
<a name="l01285"></a>01285 <span class="keyword">static</span> mpc_uint32_t get_initial_fpos(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_uint32_t StreamVersion)
<a name="l01286"></a>01286 {
<a name="l01287"></a>01287 mpc_uint32_t fpos = 0;
<a name="l01288"></a>01288 (void) StreamVersion;
<a name="l01289"></a>01289 <span class="keywordflow">switch</span> ( d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a> ) { <span class="comment">// setting position to the beginning of the data-bitstream</span>
<a name="l01290"></a>01290 <span class="keywordflow">case</span> 0x04: fpos = 48; <span class="keywordflow">break</span>;
<a name="l01291"></a>01291 <span class="keywordflow">case</span> 0x05:
<a name="l01292"></a>01292 <span class="keywordflow">case</span> 0x06: fpos = 64; <span class="keywordflow">break</span>;
<a name="l01293"></a>01293 <span class="keywordflow">case</span> 0x07:
<a name="l01294"></a>01294 <span class="keywordflow">case</span> 0x17: fpos = 200; <span class="keywordflow">break</span>;
<a name="l01295"></a>01295 }
<a name="l01296"></a>01296 <span class="keywordflow">return</span> fpos;
<a name="l01297"></a>01297 }
<a name="l01298"></a>01298
<a name="l01299"></a><a class="code" href="mpc__decoder_8c.html#a39">01299</a> mpc_bool_t <a class="code" href="mpcdec_8h.html#a20">mpc_decoder_seek_seconds</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, <span class="keywordtype">double</span> seconds)
<a name="l01300"></a>01300 {
<a name="l01301"></a>01301 <span class="keywordflow">return</span> <a class="code" href="mpcdec_8h.html#a19">mpc_decoder_seek_sample</a>(d, (mpc_int64_t)(seconds * (<span class="keywordtype">double</span>)d-><a class="code" href="structmpc__decoder__t.html#z0_10">SampleRate</a> + 0.5));
<a name="l01302"></a>01302 }
<a name="l01303"></a>01303
<a name="l01304"></a><a class="code" href="mpcdec_8h.html#a19">01304</a> mpc_bool_t <a class="code" href="mpcdec_8h.html#a19">mpc_decoder_seek_sample</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_int64_t destsample)
<a name="l01305"></a>01305 {
<a name="l01306"></a>01306 mpc_uint32_t fpos;
<a name="l01307"></a>01307 mpc_uint32_t fwd;
<a name="l01308"></a>01308
<a name="l01309"></a>01309 fwd = (mpc_uint32_t) (destsample / MPC_FRAME_LENGTH);
<a name="l01310"></a>01310 d-><a class="code" href="structmpc__decoder__t.html#z0_4">samples_to_skip</a> = MPC_DECODER_SYNTH_DELAY + (mpc_uint32_t)(destsample % MPC_FRAME_LENGTH);
<a name="l01311"></a>01311
<a name="l01312"></a>01312 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_61">Y_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_61">Y_L</a> );
<a name="l01313"></a>01313 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_62">Y_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_62">Y_R</a> );
<a name="l01314"></a>01314 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_47">SCF_Index_L</a> );
<a name="l01315"></a>01315 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_48">SCF_Index_R</a> );
<a name="l01316"></a>01316 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_50">Res_L</a> );
<a name="l01317"></a>01317 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_51">Res_R</a> );
<a name="l01318"></a>01318 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_54">SCFI_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_54">SCFI_L</a> );
<a name="l01319"></a>01319 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_55">SCFI_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_55">SCFI_R</a> );
<a name="l01320"></a>01320 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_52">DSCF_Flag_L</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_52">DSCF_Flag_L</a> );
<a name="l01321"></a>01321 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_53">DSCF_Flag_R</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_53">DSCF_Flag_R</a> );
<a name="l01322"></a>01322 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_56">DSCF_Reference_L</a>, 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_56">DSCF_Reference_L</a> );
<a name="l01323"></a>01323 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_57">DSCF_Reference_R</a>, 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_57">DSCF_Reference_R</a> );
<a name="l01324"></a>01324 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_49">Q</a> );
<a name="l01325"></a>01325 memset(d-><a class="code" href="structmpc__decoder__t.html#z0_58">MS_Flag</a> , 0, <span class="keyword">sizeof</span> d-><a class="code" href="structmpc__decoder__t.html#z0_58">MS_Flag</a> );
<a name="l01326"></a>01326
<a name="l01327"></a>01327 <span class="comment">// resetting synthesis filter to avoid "clicks"</span>
<a name="l01328"></a>01328 mpc_decoder_reset_synthesis(d);
<a name="l01329"></a>01329
<a name="l01330"></a>01330 <span class="comment">// prevent from desired position out of allowed range</span>
<a name="l01331"></a>01331 fwd = fwd < d-><a class="code" href="structmpc__decoder__t.html#z0_9">OverallFrames</a> ? fwd : d-><a class="code" href="structmpc__decoder__t.html#z0_9">OverallFrames</a>;
<a name="l01332"></a>01332
<a name="l01333"></a>01333 <span class="comment">// reset number of decoded frames</span>
<a name="l01334"></a>01334 d-><a class="code" href="structmpc__decoder__t.html#z0_8">DecodedFrames</a> = 0;
<a name="l01335"></a>01335
<a name="l01336"></a>01336 fpos = get_initial_fpos(d, d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a>);
<a name="l01337"></a>01337 <span class="keywordflow">if</span> (fpos == 0) {
<a name="l01338"></a>01338 <span class="keywordflow">return</span> FALSE;
<a name="l01339"></a>01339 }
<a name="l01340"></a>01340
<a name="l01341"></a>01341 helper2(d, fpos);
<a name="l01342"></a>01342
<a name="l01343"></a>01343 <span class="comment">// read the last 32 frames before the desired position to scan the scalefactors (artifactless jumping)</span>
<a name="l01344"></a>01344 <span class="keywordflow">for</span> ( ; d-><a class="code" href="structmpc__decoder__t.html#z0_8">DecodedFrames</a> < fwd; d-><a class="code" href="structmpc__decoder__t.html#z0_8">DecodedFrames</a>++ ) {
<a name="l01345"></a>01345 mpc_uint32_t FrameBitCnt;
<a name="l01346"></a>01346 mpc_uint32_t RING;
<a name="l01347"></a>01347 RING = d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a>;
<a name="l01348"></a>01348 d-><a class="code" href="structmpc__decoder__t.html#z0_5">FwdJumpInfo</a> = mpc_decoder_bitstream_read(d, 20); <span class="comment">// read jump-info</span>
<a name="l01349"></a>01349 d-><a class="code" href="structmpc__decoder__t.html#z0_6">ActDecodePos</a> = (d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a> << 5) + d-><a class="code" href="structmpc__decoder__t.html#z0_1">pos</a>;
<a name="l01350"></a>01350 FrameBitCnt = mpc_decoder_bits_read(d); <span class="comment">// scanning the scalefactors and check for validity of frame</span>
<a name="l01351"></a>01351 <span class="keywordflow">if</span> (d-><a class="code" href="structmpc__decoder__t.html#z0_11">StreamVersion</a> >= 7) {
<a name="l01352"></a>01352 <a class="code" href="mpc__decoder_8c.html#a11">mpc_decoder_read_bitstream_sv7</a>(d);
<a name="l01353"></a>01353 }
<a name="l01354"></a>01354 <span class="keywordflow">else</span> {
<a name="l01355"></a>01355 <a class="code" href="mpc__decoder_8c.html#a10">mpc_decoder_read_bitstream_sv6</a>(d);
<a name="l01356"></a>01356 }
<a name="l01357"></a>01357 <span class="keywordflow">if</span> (mpc_decoder_bits_read(d) - FrameBitCnt != d-><a class="code" href="structmpc__decoder__t.html#z0_5">FwdJumpInfo</a> ) {
<a name="l01358"></a>01358 <span class="comment">// Box ("Bug in perform_jump");</span>
<a name="l01359"></a>01359 <span class="keywordflow">return</span> FALSE;
<a name="l01360"></a>01360 }
<a name="l01361"></a>01361 <span class="comment">// update buffer</span>
<a name="l01362"></a>01362 <span class="keywordflow">if</span> ((RING ^ d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a>) & MEMSIZE2) {
<a name="l01363"></a>01363 f_read_dword(d, d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a> + (RING & MEMSIZE2), MEMSIZE2);
<a name="l01364"></a>01364 }
<a name="l01365"></a>01365 }
<a name="l01366"></a>01366
<a name="l01367"></a>01367 <span class="comment">// LastBitsRead = BitsRead ();</span>
<a name="l01368"></a>01368 <span class="comment">// LastFrame = d->DecodedFrames;</span>
<a name="l01369"></a>01369
<a name="l01370"></a>01370 <span class="keywordflow">return</span> TRUE;
<a name="l01371"></a>01371 }
<a name="l01372"></a>01372
<a name="l01373"></a><a class="code" href="mpc__decoder_8c.html#a12">01373</a> <span class="keywordtype">void</span> <a class="code" href="mpc__decoder_8c.html#a12">mpc_decoder_update_buffer</a>(<a class="code" href="structmpc__decoder__t.html">mpc_decoder</a> *d, mpc_uint32_t RING)
<a name="l01374"></a>01374 {
<a name="l01375"></a>01375 <span class="keywordflow">if</span> ((RING ^ d-><a class="code" href="structmpc__decoder__t.html#z0_3">Zaehler</a>) & MEMSIZE2 ) {
<a name="l01376"></a>01376 <span class="comment">// update buffer</span>
<a name="l01377"></a>01377 f_read_dword(d, d-><a class="code" href="structmpc__decoder__t.html#z0_2">Speicher</a> + (RING & MEMSIZE2), MEMSIZE2);
<a name="l01378"></a>01378 }
<a name="l01379"></a>01379 }
<a name="l01380"></a>01380
<a name="l01381"></a>01381
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Sun Oct 23 16:35:24 2005 for libmpcdec by
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