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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 <string.h>
#include <stdio.h>
static int probe_daud(bgav_input_context_t * input)
{
char * pos;
/* There seems to be no way to do proper probing of the stream.
Therefore, we accept only local files with .dv as extension */
if(input->filename)
{
pos = strrchr(input->filename, '.');
if(!pos)
return 0;
if(!strcasecmp(pos, ".302"))
return 1;
}
return 0;
}
static int open_daud(bgav_demuxer_context_t * ctx)
{
bgav_stream_t * s;
ctx->tt = bgav_track_table_create(1);
s = bgav_track_add_audio_stream(ctx->tt->tracks[0], ctx->opt);
s->fourcc = BGAV_MK_FOURCC('d', 'a', 'u', 'd');
s->data.audio.format->num_channels = 6;
s->data.audio.format->samplerate = 96000;
s->container_bitrate = 3 * 6 * 96000 * 8;
s->data.audio.block_align = 3 * 6;
s->data.audio.bits_per_sample = 24;
bgav_track_set_format(ctx->tt->cur, "D-Cinema audio", NULL);
ctx->data_start = 0;
ctx->flags |= BGAV_DEMUXER_HAS_DATA_START;
if(ctx->input->flags & BGAV_INPUT_CAN_SEEK_BYTE)
ctx->flags |= BGAV_DEMUXER_CAN_SEEK;
return 1;
}
static int next_packet_daud(bgav_demuxer_context_t * ctx)
{
bgav_stream_t * s;
bgav_packet_t * p;
uint16_t size;
if(!bgav_input_read_16_be(ctx->input, &size))
return 0;
bgav_input_skip(ctx->input, 2); // Unknown
s = bgav_track_find_stream(ctx, 0);
if(s)
{
p = bgav_stream_get_packet_write(s);
bgav_packet_alloc(p, size);
p->data_size = bgav_input_read_data(ctx->input, p->data, size);
if(!p->data_size)
return 0;
bgav_stream_done_packet_write(s, p);
}
else
bgav_input_skip(ctx->input, size);
return 1;
}
static void close_daud(bgav_demuxer_context_t * ctx)
{
}
const bgav_demuxer_t bgav_demuxer_daud =
{
.probe = probe_daud,
.open = open_daud,
.next_packet = next_packet_daud,
.close = close_daud
};
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