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Code Issues Releases Wiki Activity

fixed RoQ file detection and FPS determination (maybe)

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4754 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
melanson 2002-02-18 16:50:16 +00:00
parent f99d460f2e
commit 6842124760
1 changed files with 6 additions and 8 deletions

14
libmpdemux/demux_roq.c
View File

@ -26,8 +26,6 @@
#define CHUNK_TYPE_AUDIO 0
#define CHUNK_TYPE_VIDEO 1
#define RoQ_FPS 30
typedef struct roq_chunk_t
{
int chunk_type;
@ -49,14 +47,14 @@ typedef struct roq_data_t
// Check if a stream qualifies as a RoQ file based on the magic numbers
// at the start of the file:
// 84 10 FF FF FF FF 1E 00
// 84 10 FF FF FF FF xx xx
int roq_check_file(demuxer_t *demuxer)
{
stream_reset(demuxer->stream);
stream_seek(demuxer->stream, 0);
if ((stream_read_dword(demuxer->stream) == 0x8410FFFF) &&
(stream_read_dword(demuxer->stream) == 0xFFFF1E00))
((stream_read_dword(demuxer->stream) & 0xFFFF0000) == 0xFFFF0000))
return 1;
else
return 0;
@ -103,6 +101,7 @@ demuxer_t* demux_open_roq(demuxer_t* demuxer)
int chunk_arg;
int last_chunk_id = 0;
int largest_audio_chunk = 0;
int fps;
roq_data->total_chunks = 0;
roq_data->current_chunk = 0;
@ -110,7 +109,8 @@ demuxer_t* demux_open_roq(demuxer_t* demuxer)
roq_data->chunks = NULL;
// position the stream and start traversing
stream_seek(demuxer->stream, 8);
stream_seek(demuxer->stream, 6);
fps = stream_read_word_le(demuxer->stream);
while (!stream_eof(demuxer->stream))
{
chunk_id = stream_read_word_le(demuxer->stream);
@ -144,7 +144,7 @@ demuxer_t* demux_open_roq(demuxer_t* demuxer)
sh_video->format = mmioFOURCC('R', 'o', 'Q', 'V');
// constant frame rate
sh_video->fps = 1000 / RoQ_FPS;
sh_video->fps = fps;
sh_video->frametime = 1 / sh_video->fps;
}
}
@ -240,7 +240,5 @@ demuxer_t* demux_open_roq(demuxer_t* demuxer)
stream_reset(demuxer->stream);
sh_audio = NULL;
return demuxer;
}