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authorIvo van Poorten <ivop@euronet.nl>2007-05-07 13:30:08 +0000
committerIvo van Poorten <ivop@euronet.nl>2007-05-07 13:30:08 +0000
commitcb631737855f3c0154b677ed2890cc7032df4064 (patch)
tree5c2daa42ea7d8e8fc88fe62942d7a47a063863f3 /libavformat/txd.c
parent1ca779e7eb9c05f5086b1f8169ac30d9e1bd9f77 (diff)
downloadffmpeg-cb631737855f3c0154b677ed2890cc7032df4064.tar.gz
Renderware TXD demuxer
Originally committed as revision 8927 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat/txd.c')
-rw-r--r--libavformat/txd.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/libavformat/txd.c b/libavformat/txd.c
new file mode 100644
index 0000000000..19febd160c
--- /dev/null
+++ b/libavformat/txd.c
@@ -0,0 +1,103 @@
+/*
+ * 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,
+};