mirror of https://git.ffmpeg.org/ffmpeg.git
104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
|
/*
|
||
|
|
* Renderware TeXture Dictionary (.txd) demuxer
|
||
|
|
* Copyright (c) 2007 Ivo van Poorten
|
||
|
|
*
|
||
|
|
* This file is part of FFmpeg.
|
||
|
|
*
|
||
|
|
* FFmpeg 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.
|
||
|
|
*
|
||
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "avformat.h"
|
||
|
|
|
||
|
|
#define TXD_FILE 0x16
|
||
|
|
#define TXD_INFO 0x01
|
||
|
|
#define TXD_EXTRA 0x03
|
||
|
|
#define TXD_TEXTURE 0x15
|
||
|
|
#define TXD_TEXTURE_DATA 0x01
|
||
|
|
#define TXD_MARKER 0x1803ffff
|
||
|
|
#define TXD_MARKER2 0x1003ffff
|
||
|
|
|
||
|
|
static int txd_probe(AVProbeData * pd) {
|
||
|
|
if (AV_RL32(pd->buf ) == TXD_FILE &&
|
||
|
|
(AV_RL32(pd->buf+8) == TXD_MARKER || AV_RL32(pd->buf+8) == TXD_MARKER2))
|
||
|
|
return AVPROBE_SCORE_MAX;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int txd_read_header(AVFormatContext *s, AVFormatParameters *ap) {
|
||
|
|
AVStream *st;
|
||
|
|
|
||
|
|
st = av_new_stream(s, 0);
|
||
|
|
if (!st)
|
||
|
|
return AVERROR_NOMEM;
|
||
|
|
st->codec->codec_type = CODEC_TYPE_VIDEO;
|
||
|
|
st->codec->codec_id = CODEC_ID_TXD;
|
||
|
|
st->codec->time_base.den = 5;
|
||
|
|
st->codec->time_base.num = 1;
|
||
|
|
/* the parameters will be extracted from the compressed bitstream */
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int txd_read_packet(AVFormatContext *s, AVPacket *pkt) {
|
||
|
|
ByteIOContext *pb = &s->pb;
|
||
|
|
unsigned int id, chunk_size, marker;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
next_chunk:
|
||
|
|
id = get_le32(pb);
|
||
|
|
chunk_size = get_le32(pb);
|
||
|
|
marker = get_le32(pb);
|
||
|
|
|
||
|
|
if (url_feof(&s->pb))
|
||
|
|
return AVERROR_IO;
|
||
|
|
if (marker != TXD_MARKER && marker != TXD_MARKER2) {
|
||
|
|
av_log(NULL, AV_LOG_ERROR, "marker does not match\n");
|
||
|
|
return AVERROR_IO;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (id) {
|
||
|
|
case TXD_INFO:
|
||
|
|
if (chunk_size > 100)
|
||
|
|
break;
|
||
|
|
case TXD_EXTRA:
|
||
|
|
url_fskip(&s->pb, chunk_size);
|
||
|
|
case TXD_FILE:
|
||
|
|
case TXD_TEXTURE:
|
||
|
|
goto next_chunk;
|
||
|
|
default:
|
||
|
|
av_log(NULL, AV_LOG_ERROR, "unknown chunk id %i\n", id);
|
||
|
|
return AVERROR_IO;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = av_get_packet(&s->pb, pkt, chunk_size);
|
||
|
|
pkt->stream_index = 0;
|
||
|
|
|
||
|
|
return ret <= 0 ? AVERROR_IO : ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int txd_read_close(AVFormatContext *s) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
AVInputFormat txd_demuxer =
|
||
|
|
{
|
||
|
|
"txd",
|
||
|
|
"txd format",
|
||
|
|
0,
|
||
|
|
txd_probe,
|
||
|
|
txd_read_header,
|
||
|
|
txd_read_packet,
|
||
|
|
txd_read_close,
|
||
|
|
};
|