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/* File format: AMR-NB (c) 2007 robs@users.sourceforge.net
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at
* your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* In order to use the AMR format with SoX, you need to have an AMR
* library installed at SoX build time. Currently, the SoX build system
* recognizes two AMR implementations, in the following order:
* http://opencore-amr.sourceforge.net/
* http://ftp.penguin.cz/pub/users/utx/amr/
*/
#include "sox_i.h"
#ifdef HAVE_AMRNB
/* Common definitions: */
enum amrnb_mode { amrnb_mode_dummy };
static const unsigned amrnb_block_size[] = {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
static char const amrnb_magic[] = "#!AMR\n";
#define amr_block_size amrnb_block_size
#define amr_magic amrnb_magic
#define amr_priv_t amrnb_priv_t
#define amr_opencore_funcs amrnb_opencore_funcs
#define amr_gp3_funcs amrnb_gp3_funcs
#define AMR_CODED_MAX 32 /* max coded size */
#define AMR_ENCODING SOX_ENCODING_AMR_NB
#define AMR_FORMAT_FN lsx_amr_nb_format_fn
#define AMR_FRAME 160 /* 20ms @ 8kHz */
#define AMR_MODE_MAX 7
#define AMR_NAMES "amr-nb", "anb"
#define AMR_RATE 8000
#define AMR_DESC "3GPP Adaptive Multi Rate Narrow-Band (AMR-NB) lossy speech compressor"
#if !defined(HAVE_LIBLTDL)
#undef DL_AMRNB
#endif
#ifdef DL_AMRNB
#define AMR_FUNC LSX_DLENTRY_DYNAMIC
#else
#define AMR_FUNC LSX_DLENTRY_STATIC
#endif /* DL_AMRNB */
/* OpenCore definitions: */
#if defined(HAVE_OPENCORE_AMRNB_INTERF_DEC_H) || defined(DL_AMRNB)
#define AMR_OPENCORE 1
#define AMR_OPENCORE_ENABLE_ENCODE 1
#endif
#define AMR_OPENCORE_FUNC_ENTRIES(f,x) \
AMR_FUNC(f,x, void*, Encoder_Interface_init, (int dtx)) \
AMR_FUNC(f,x, int, Encoder_Interface_Encode, (void* state, enum amrnb_mode mode, const short* in, unsigned char* out, int forceSpeech)) \
AMR_FUNC(f,x, void, Encoder_Interface_exit, (void* state)) \
AMR_FUNC(f,x, void*, Decoder_Interface_init, (void)) \
AMR_FUNC(f,x, void, Decoder_Interface_Decode, (void* state, const unsigned char* in, short* out, int bfi)) \
AMR_FUNC(f,x, void, Decoder_Interface_exit, (void* state)) \
#define AmrOpencoreEncoderInit() \
Encoder_Interface_init(1)
#define AmrOpencoreEncoderEncode(state, mode, in, out, forceSpeech) \
Encoder_Interface_Encode(state, mode, in, out, forceSpeech)
#define AmrOpencoreEncoderExit(state) \
Encoder_Interface_exit(state)
#define AmrOpencoreDecoderInit() \
Decoder_Interface_init()
#define AmrOpencoreDecoderDecode(state, in, out, bfi) \
Decoder_Interface_Decode(state, in, out, bfi)
#define AmrOpencoreDecoderExit(state) \
Decoder_Interface_exit(state)
#define AMR_OPENCORE_DESC "amr-nb OpenCore library"
static const char* const amr_opencore_library_names[] =
{
#ifdef DL_AMRWB
"libopencore-amrnb",
"libopencore-amrnb-0",
#endif
NULL
};
/* 3GPP (reference implementation) definitions: */
#if !defined(HAVE_OPENCORE_AMRNB_INTERF_DEC_H) || defined(DL_AMRNB)
#define AMR_GP3 1
#endif
#define AMR_GP3_FUNC_ENTRIES(f,x) \
AMR_FUNC(f,x, void*, VADxEncoder_Interface_init, (int dtx, char vad2_code)) \
AMR_FUNC(f,x, int, GP3VADxEncoder_Interface_Encode, (void* state, enum amrnb_mode mode, short* in, unsigned char* out, int forceSpeech, char vad2_code)) \
AMR_FUNC(f,x, void, Encoder_Interface_exit, (void* state)) \
AMR_FUNC(f,x, void*, Decoder_Interface_init, (void)) \
AMR_FUNC(f,x, void, GP3Decoder_Interface_Decode, (void* state, unsigned char* in, short* out, int bfi)) \
AMR_FUNC(f,x, void, Decoder_Interface_exit, (void* state)) \
#define AmrGp3EncoderInit() \
VADxEncoder_Interface_init(1, 0)
#define AmrGp3EncoderEncode(state, mode, in, out, forceSpeech) \
GP3VADxEncoder_Interface_Encode(state, mode, in, out, forceSpeech, 0)
#define AmrGp3EncoderExit(state) \
Encoder_Interface_exit(state)
#define AmrGp3DecoderInit() \
Decoder_Interface_init()
#define AmrGp3DecoderDecode(state, in, out, bfi) \
GP3Decoder_Interface_Decode(state, in, out, bfi)
#define AmrGp3DecoderExit(state) \
Decoder_Interface_exit(state)
#define AMR_GP3_DESC "amr-nb 3GPP reference library"
static const char* const amr_gp3_library_names[] =
{
#ifdef DL_AMRWB
"libamrnb-3",
"libamrnb",
"amrnb",
"cygamrnb-3",
#endif
NULL
};
#include "amr.h"
#endif /* HAVE_AMRNB */
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