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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <avdec_private.h>
#include <stdlib.h>
#define SOL_DPCM 1
#define SOL_16BIT 4
#define SOL_STEREO 16
static int probe_sol(bgav_input_context_t * input)
{
uint16_t magic;
uint8_t probe_data[6];
if(bgav_input_get_data(input, probe_data, 6) < 6)
return 0;
magic = GAVL_PTR_2_16LE(&probe_data[0]);
if((magic != 0x0B8D) && (magic != 0x0C0D) && (magic != 0x0C8D))
return 0;
if((probe_data[2] == 'S') &&
(probe_data[3] == 'O') &&
(probe_data[4] == 'L') &&
(probe_data[5] == 0))
return 1;
return 0;
}
static uint32_t get_fourcc_dpcm(int magic, int type, int * bits)
{
if(magic == 0x0B8D)
return BGAV_MK_FOURCC('S','O','L','1');//SOL_DPCM_OLD;
if(type & SOL_DPCM)
{
if(type & SOL_16BIT)
return BGAV_MK_FOURCC('S','O','L','3');//SOL_DPCM_NEW16;
else if(magic == 0x0C8D)
return BGAV_MK_FOURCC('S','O','L','1');//SOL_DPCM_OLD;
else return BGAV_MK_FOURCC('S','O','L','2');//SOL_DPCM_NEW8;
}
return 0;
}
static uint32_t get_fourcc(int magic, int type, int * bits)
{
if(magic == 0x0B8D)
{
if (type & SOL_DPCM) return get_fourcc_dpcm(magic, type, bits);
else
{
*bits = 8;
return
BGAV_WAVID_2_FOURCC(0x0001);
}
}
if(type & SOL_DPCM)
{
if (type & SOL_16BIT) return get_fourcc_dpcm(magic, type, bits);
else if (magic == 0x0C8D) return get_fourcc_dpcm(magic, type, bits);
else return get_fourcc_dpcm(magic, type, bits);
}
if(type & SOL_16BIT)
{
*bits = 16;
return BGAV_WAVID_2_FOURCC(0x0001);
}
*bits = 8;
return BGAV_WAVID_2_FOURCC(0x0001);
}
static int sol_channels(int magic, int type)
{
if (magic == 0x0B8D || !(type & SOL_STEREO)) return 1;
return 2;
}
static int open_sol(bgav_demuxer_context_t * ctx)
{
uint16_t magic;
bgav_stream_t * s;
uint16_t rate;
uint8_t type;
uint32_t size;
if(!bgav_input_read_16_le(ctx->input, &magic))
return 0;
bgav_input_skip(ctx->input, 4);
if(!bgav_input_read_16_le(ctx->input, &rate) ||
!bgav_input_read_data(ctx->input, &type, 1) ||
!bgav_input_read_32_le(ctx->input, &size))
return 0;
if(magic != 0x0B8D)
bgav_input_skip(ctx->input, 1);
ctx->tt = bgav_track_table_create(1);
s = bgav_track_add_audio_stream(ctx->tt->cur, ctx->opt);
s->data.audio.bits_per_sample = 16;
s->fourcc = get_fourcc(magic, type, &s->data.audio.bits_per_sample);
s->data.audio.format->samplerate = rate;
s->data.audio.format->num_channels = sol_channels(magic, type);
s->stream_id = 0;
bgav_track_set_format(ctx->tt->cur, "Sierra SOL", NULL);
return 1;
}
#define MAX_SIZE 4096
static int next_packet_sol(bgav_demuxer_context_t * ctx)
{
bgav_stream_t * s;
bgav_packet_t * p;
s = bgav_track_find_stream(ctx, 0);
p = bgav_stream_get_packet_write(s);
bgav_packet_alloc(p, MAX_SIZE);
p->data_size = bgav_input_read_data(ctx->input, p->data, MAX_SIZE);
if(!p->data_size)
return 0;
bgav_stream_done_packet_write(s, p);
return 1;
}
static void close_sol(bgav_demuxer_context_t * ctx)
{
}
const bgav_demuxer_t bgav_demuxer_sol =
{
.probe = probe_sol,
.open = open_sol,
.next_packet = next_packet_sol,
.close = close_sol
};
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