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fixed to be able to handle extra-quirky .film files on Lemmings 3DO

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console game


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5414 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
melanson 2002-03-31 02:57:53 +00:00
parent 06e95aef16
commit ddf20c18da
1 changed files with 76 additions and 28 deletions
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104
libmpdemux/demux_film.c
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@ -1,9 +1,13 @@
/*
FILM file parser for the MPlayer program
by Mike Melanson
FILM file parser for the MPlayer program
by Mike Melanson
Details of the FILM file format can be found at:
http://www.pcisys.net/~melanson/codecs/
This demuxer handles FILM (a.k.a. CPK) files commonly found on
Sega Saturn CD-ROM games. FILM files have also been found on 3DO
games.
Details of the FILM file format can be found at:
http://www.pcisys.net/~melanson/codecs/
*/
#include <stdio.h>
@ -39,6 +43,7 @@ typedef struct _film_data_t
unsigned int current_chunk;
film_chunk_t *chunks;
unsigned int chunks_per_second;
unsigned int film_version;
} film_data_t;
void demux_seek_film(demuxer_t *demuxer, float rel_seek_secs, int flags)
@ -88,6 +93,8 @@ int demux_film_fill_buffer(demuxer_t *demuxer)
sh_audio_t *sh_audio = demuxer->audio->sh;
film_data_t *film_data = (film_data_t *)demuxer->priv;
film_chunk_t film_chunk;
int length_fix_bytes;
demux_packet_t* dp;
// see if the end has been reached
if (film_data->current_chunk >= film_data->total_chunks)
@ -103,7 +110,7 @@ int demux_film_fill_buffer(demuxer_t *demuxer)
// (all ones in syncinfo1 indicates an audio chunk)
if (film_chunk.syncinfo1 == 0xFFFFFFFF)
{
demux_packet_t* dp=new_demux_packet(film_chunk.chunk_size);
dp = new_demux_packet(film_chunk.chunk_size);
if (stream_read(demuxer->stream, dp->buffer, film_chunk.chunk_size) !=
film_chunk.chunk_size)
return 0;
@ -134,23 +141,30 @@ int demux_film_fill_buffer(demuxer_t *demuxer)
// if the demuxer is dealing with CVID data, deal with it a special way
if (sh_video->format == mmioFOURCC('c', 'v', 'i', 'd'))
{
// account for 2 extra bytes
demux_packet_t* dp=new_demux_packet(film_chunk.chunk_size - 2);
if (film_data->film_version)
length_fix_bytes = 2;
else
length_fix_bytes = 6;
// these CVID data chunks appear to have 2 extra bytes; skip them
// account for the fix bytes when allocating the buffer
dp = new_demux_packet(film_chunk.chunk_size - length_fix_bytes);
// these CVID data chunks have a few extra bytes; skip them
if (stream_read(demuxer->stream, dp->buffer, 10) != 10)
return 0;
stream_skip(demuxer->stream, 2);
stream_skip(demuxer->stream, length_fix_bytes);
if (stream_read(demuxer->stream, dp->buffer + 10,
film_chunk.chunk_size - 12) != (film_chunk.chunk_size - 12))
film_chunk.chunk_size - (10 + length_fix_bytes)) !=
(film_chunk.chunk_size - (10 + length_fix_bytes)))
return 0;
dp->pts = film_chunk.pts;
dp->pos = film_chunk.chunk_offset;
dp->flags = (film_chunk.syncinfo1 & 0x80000000) ? 1 : 0;
// fix the CVID chunk size by adding 6
cvid_size = (dp->buffer[1] << 16) | (dp->buffer[2] << 8) | dp->buffer[3];
cvid_size += 6;
// fix the CVID chunk size
cvid_size = film_chunk.chunk_size - length_fix_bytes;
dp->buffer[1] = (cvid_size >> 16) & 0xFF;
dp->buffer[2] = (cvid_size >> 8) & 0xFF;
dp->buffer[3] = (cvid_size >> 0) & 0xFF;
@ -183,7 +197,6 @@ demuxer_t* demux_open_film(demuxer_t* demuxer)
unsigned int i;
unsigned int video_format;
int audio_channels;
unsigned int film_version;
int counting_chunks;
unsigned int total_audio_bytes = 0;
@ -209,12 +222,13 @@ demuxer_t* demux_open_film(demuxer_t* demuxer)
// get the header size, which implicitly points past the header and
// to the start of the data
header_size = stream_read_dword(demuxer->stream);
film_version = stream_read_fourcc(demuxer->stream);
film_data->film_version = stream_read_fourcc(demuxer->stream);
demuxer->movi_start = header_size;
demuxer->movi_end = demuxer->stream->end_pos;
header_size -= 16;
mp_msg(MSGT_DEMUX, MSGL_HINT, "FILM version %.4s\n", &film_version);
mp_msg(MSGT_DEMUX, MSGL_HINT, "FILM version %.4s\n",
&film_data->film_version);
// skip to where the next chunk should be
stream_skip(demuxer->stream, 4);
@ -244,18 +258,56 @@ demuxer_t* demux_open_film(demuxer_t* demuxer)
sh_video->format = video_format;
sh_video->disp_h = stream_read_dword(demuxer->stream);
sh_video->disp_w = stream_read_dword(demuxer->stream);
stream_skip(demuxer->stream, 1); // unknown byte
mp_msg(MSGT_DECVIDEO, MSGL_V,
" FILM video: %d x %d\n", sh_video->disp_w,
sh_video->disp_h);
}
else
stream_skip(demuxer->stream, 9);
// skip height and width if no video
stream_skip(demuxer->stream, 8);
// skip over unknown byte, but only if file had non-NULL version
if (film_data->film_version)
stream_skip(demuxer->stream, 1);
// fetch the audio channels to see if there's any audio
audio_channels = stream_read_char(demuxer->stream);
if (audio_channels > 0)
// don't do this if the file is a quirky file with NULL version
if (film_data->film_version)
{
audio_channels = stream_read_char(demuxer->stream);
if (audio_channels > 0)
{
// create and initialize the audio stream header
sh_audio = new_sh_audio(demuxer, 0);
demuxer->audio->sh = sh_audio;
sh_audio->ds = demuxer->audio;
sh_audio->wf = (WAVEFORMATEX *)malloc(sizeof(WAVEFORMATEX));
// uncompressed PCM format
sh_audio->wf->wFormatTag = 1;
sh_audio->format = 1;
sh_audio->wf->nChannels = audio_channels;
sh_audio->wf->wBitsPerSample = stream_read_char(demuxer->stream);
stream_skip(demuxer->stream, 1); // skip unknown byte
sh_audio->wf->nSamplesPerSec = stream_read_word(demuxer->stream);
sh_audio->wf->nAvgBytesPerSec =
sh_audio->wf->nSamplesPerSec * sh_audio->wf->wBitsPerSample
* sh_audio->wf->nChannels / 8;
stream_skip(demuxer->stream, 6); // skip the rest of the unknown
mp_msg(MSGT_DECVIDEO, MSGL_V,
" FILM audio: %d channels, %d bits, %d Hz\n",
sh_audio->wf->nChannels, 8 * sh_audio->wf->wBitsPerSample,
sh_audio->wf->nSamplesPerSec);
}
else
stream_skip(demuxer->stream, 10);
}
else
{
// otherwise, make some assumptions about the audio
// create and initialize the audio stream header
sh_audio = new_sh_audio(demuxer, 0);
demuxer->audio->sh = sh_audio;
@ -266,22 +318,18 @@ demuxer_t* demux_open_film(demuxer_t* demuxer)
// uncompressed PCM format
sh_audio->wf->wFormatTag = 1;
sh_audio->format = 1;
sh_audio->wf->nChannels = audio_channels;
sh_audio->wf->wBitsPerSample = stream_read_char(demuxer->stream);
stream_skip(demuxer->stream, 1); // skip unknown byte
sh_audio->wf->nSamplesPerSec = stream_read_word(demuxer->stream);
sh_audio->wf->nChannels = 1;
sh_audio->wf->wBitsPerSample = 8;
sh_audio->wf->nSamplesPerSec = 22050;
sh_audio->wf->nAvgBytesPerSec =
sh_audio->wf->nSamplesPerSec * sh_audio->wf->wBitsPerSample
* sh_audio->wf->nChannels / 8;
stream_skip(demuxer->stream, 6); // skip the rest of the unknown
mp_msg(MSGT_DECVIDEO, MSGL_V,
" FILM audio: %d channels, %d bits, %d Hz\n",
sh_audio->wf->nChannels, 8 * sh_audio->wf->wBitsPerSample,
sh_audio->wf->nChannels, sh_audio->wf->wBitsPerSample,
sh_audio->wf->nSamplesPerSec);
}
else
stream_skip(demuxer->stream, 10);
break;
case CHUNK_STAB: