FFmpeg/libavformat/txd.c
Stefano Sabatini 72415b2adb Define AVMediaType enum, and use it instead of enum CodecType, which
is deprecated and will be dropped at the next major bump.

Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-03-30 23:30:55 +00:00

102 lines
2.9 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 "libavutil/intreadwrite.h"
#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(ENOMEM);
st->codec->codec_type = AVMEDIA_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_EOF;
if (marker != TXD_MARKER && marker != TXD_MARKER2) {
av_log(s, AV_LOG_ERROR, "marker does not match\n");
return AVERROR_INVALIDDATA;
}
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(s, AV_LOG_ERROR, "unknown chunk id %i\n", id);
return AVERROR_INVALIDDATA;
}
ret = av_get_packet(s->pb, pkt, chunk_size);
if (ret < 0)
return ret;
pkt->stream_index = 0;
return 0;
}
AVInputFormat txd_demuxer =
{
"txd",
NULL_IF_CONFIG_SMALL("Renderware TeXture Dictionary"),
0,
txd_probe,
txd_read_header,
txd_read_packet,
};