mirror of
https://github.com/mpv-player/mpv
synced 2024-12-16 03:45:23 +00:00
02fe2aae9f
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@26331 b3059339-0415-0410-9bf9-f77b7e298cf2
479 lines
14 KiB
C
479 lines
14 KiB
C
/*
|
|
FILM file parser for the MPlayer program
|
|
by Mike Melanson
|
|
|
|
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>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "config.h"
|
|
#include "mp_msg.h"
|
|
#include "help_mp.h"
|
|
|
|
#include "stream/stream.h"
|
|
#include "demuxer.h"
|
|
#include "stheader.h"
|
|
|
|
// chunk types found in a FILM file
|
|
#define CHUNK_FILM mmioFOURCC('F', 'I', 'L', 'M')
|
|
#define CHUNK_FDSC mmioFOURCC('F', 'D', 'S', 'C')
|
|
#define CHUNK_STAB mmioFOURCC('S', 'T', 'A', 'B')
|
|
|
|
typedef struct film_chunk_t
|
|
{
|
|
off_t chunk_offset;
|
|
int chunk_size;
|
|
unsigned int syncinfo1;
|
|
unsigned int syncinfo2;
|
|
|
|
float pts;
|
|
} film_chunk_t;
|
|
|
|
typedef struct film_data_t
|
|
{
|
|
unsigned int total_chunks;
|
|
unsigned int current_chunk;
|
|
film_chunk_t *chunks;
|
|
unsigned int chunks_per_second;
|
|
unsigned int film_version;
|
|
} film_data_t;
|
|
|
|
static void demux_seek_film(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
|
|
{
|
|
film_data_t *film_data = (film_data_t *)demuxer->priv;
|
|
int new_current_chunk=(flags&SEEK_ABSOLUTE)?0:film_data->current_chunk;
|
|
|
|
if(flags&SEEK_FACTOR)
|
|
new_current_chunk += rel_seek_secs * film_data->total_chunks; // 0..1
|
|
else
|
|
new_current_chunk += rel_seek_secs * film_data->chunks_per_second; // secs
|
|
|
|
|
|
mp_msg(MSGT_DECVIDEO, MSGL_INFO,"current, total chunks = %d, %d; seek %5.3f sec, new chunk guess = %d\n",
|
|
film_data->current_chunk, film_data->total_chunks,
|
|
rel_seek_secs, new_current_chunk);
|
|
|
|
// check if the new chunk number is valid
|
|
if (new_current_chunk < 0)
|
|
new_current_chunk = 0;
|
|
if ((unsigned int)new_current_chunk > film_data->total_chunks)
|
|
new_current_chunk = film_data->total_chunks - 1;
|
|
|
|
while (((film_data->chunks[new_current_chunk].syncinfo1 == 0xFFFFFFFF) ||
|
|
(film_data->chunks[new_current_chunk].syncinfo1 & 0x80000000)) &&
|
|
(new_current_chunk > 0))
|
|
new_current_chunk--;
|
|
|
|
film_data->current_chunk = new_current_chunk;
|
|
|
|
mp_msg(MSGT_DECVIDEO, MSGL_INFO," (flags = %X) actual new chunk = %d (syncinfo1 = %08X)\n",
|
|
flags, film_data->current_chunk, film_data->chunks[film_data->current_chunk].syncinfo1);
|
|
demuxer->video->pts=film_data->chunks[film_data->current_chunk].pts;
|
|
|
|
}
|
|
|
|
// return value:
|
|
// 0 = EOF or no stream found
|
|
// 1 = successfully read a packet
|
|
static int demux_film_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds)
|
|
{
|
|
int i;
|
|
unsigned char byte_swap;
|
|
int cvid_size;
|
|
sh_video_t *sh_video = demuxer->video->sh;
|
|
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)
|
|
return 0;
|
|
|
|
film_chunk = film_data->chunks[film_data->current_chunk];
|
|
|
|
// position stream and fetch chunk
|
|
stream_seek(demuxer->stream, film_chunk.chunk_offset);
|
|
|
|
// load the chunks manually (instead of using ds_read_packet()), since
|
|
// they require some adjustment
|
|
// (all ones in syncinfo1 indicates an audio chunk)
|
|
if (film_chunk.syncinfo1 == 0xFFFFFFFF)
|
|
{
|
|
if(demuxer->audio->id>=-1){ // audio not disabled
|
|
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;
|
|
dp->pts = film_chunk.pts;
|
|
dp->pos = film_chunk.chunk_offset;
|
|
dp->flags = 0;
|
|
|
|
// adjust the data before queuing it:
|
|
// 8-bit: signed -> unsigned
|
|
// 16-bit: big-endian -> little-endian
|
|
if (sh_audio->wf->wBitsPerSample == 8)
|
|
for (i = 0; i < film_chunk.chunk_size; i++)
|
|
dp->buffer[i] += 128;
|
|
else
|
|
for (i = 0; i < film_chunk.chunk_size; i += 2)
|
|
{
|
|
byte_swap = dp->buffer[i];
|
|
dp->buffer[i] = dp->buffer[i + 1];
|
|
dp->buffer[i + 1] = byte_swap;
|
|
}
|
|
|
|
/* for SegaSaturn .cpk file, translate audio data if stereo */
|
|
if (sh_audio->wf->nChannels == 2) {
|
|
if (sh_audio->wf->wBitsPerSample == 8) {
|
|
unsigned char* tmp = dp->buffer;
|
|
unsigned char buf[film_chunk.chunk_size];
|
|
for(i = 0; i < film_chunk.chunk_size/2; i++) {
|
|
buf[i*2] = tmp[i];
|
|
buf[i*2+1] = tmp[film_chunk.chunk_size/2+i];
|
|
}
|
|
memcpy( tmp, buf, film_chunk.chunk_size );
|
|
}
|
|
else {/* for 16bit */
|
|
unsigned short* tmp = dp->buffer;
|
|
unsigned short buf[film_chunk.chunk_size/2];
|
|
for(i = 0; i < film_chunk.chunk_size/4; i++) {
|
|
buf[i*2] = tmp[i];
|
|
buf[i*2+1] = tmp[film_chunk.chunk_size/4+i];
|
|
}
|
|
memcpy( tmp, buf, film_chunk.chunk_size );
|
|
}
|
|
}
|
|
|
|
// append packet to DS stream
|
|
ds_add_packet(demuxer->audio, dp);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// if the demuxer is dealing with CVID data, deal with it a special way
|
|
if (sh_video->format == mmioFOURCC('c', 'v', 'i', 'd'))
|
|
{
|
|
if (film_data->film_version)
|
|
length_fix_bytes = 2;
|
|
else
|
|
length_fix_bytes = 6;
|
|
|
|
// 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, length_fix_bytes);
|
|
|
|
if (stream_read(demuxer->stream, dp->buffer + 10,
|
|
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
|
|
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;
|
|
|
|
// append packet to DS stream
|
|
ds_add_packet(demuxer->video, dp);
|
|
}
|
|
else
|
|
{
|
|
ds_read_packet(demuxer->video, demuxer->stream, film_chunk.chunk_size,
|
|
film_chunk.pts,
|
|
film_chunk.chunk_offset, (film_chunk.syncinfo1 & 0x80000000) ? 1 : 0);
|
|
}
|
|
}
|
|
film_data->current_chunk++;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static demuxer_t* demux_open_film(demuxer_t* demuxer)
|
|
{
|
|
sh_video_t *sh_video = NULL;
|
|
sh_audio_t *sh_audio = NULL;
|
|
film_data_t *film_data;
|
|
film_chunk_t film_chunk;
|
|
int header_size;
|
|
unsigned int chunk_type;
|
|
unsigned int chunk_size;
|
|
unsigned int i;
|
|
unsigned int video_format;
|
|
int audio_channels;
|
|
int counting_chunks;
|
|
unsigned int total_audio_bytes = 0;
|
|
|
|
film_data = malloc(sizeof(film_data_t));
|
|
film_data->total_chunks = 0;
|
|
film_data->current_chunk = 0;
|
|
film_data->chunks = NULL;
|
|
film_data->chunks_per_second = 0;
|
|
|
|
// go back to the beginning
|
|
stream_reset(demuxer->stream);
|
|
stream_seek(demuxer->stream, 0);
|
|
|
|
// read the master chunk type
|
|
chunk_type = stream_read_fourcc(demuxer->stream);
|
|
// validate the chunk type
|
|
if (chunk_type != CHUNK_FILM)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "Not a FILM file\n");
|
|
free(film_data);
|
|
return(NULL);
|
|
}
|
|
|
|
// 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_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",
|
|
(char *)&film_data->film_version);
|
|
|
|
// skip to where the next chunk should be
|
|
stream_skip(demuxer->stream, 4);
|
|
|
|
// traverse through the header
|
|
while (header_size > 0)
|
|
{
|
|
// fetch the chunk type and size
|
|
chunk_type = stream_read_fourcc(demuxer->stream);
|
|
chunk_size = stream_read_dword(demuxer->stream);
|
|
header_size -= chunk_size;
|
|
|
|
switch (chunk_type)
|
|
{
|
|
case CHUNK_FDSC:
|
|
mp_msg(MSGT_DECVIDEO, MSGL_V, "parsing FDSC chunk\n");
|
|
|
|
// fetch the video codec fourcc to see if there's any video
|
|
video_format = stream_read_fourcc(demuxer->stream);
|
|
if (video_format)
|
|
{
|
|
// create and initialize the video stream header
|
|
sh_video = new_sh_video(demuxer, 0);
|
|
demuxer->video->sh = sh_video;
|
|
sh_video->ds = demuxer->video;
|
|
|
|
sh_video->format = video_format;
|
|
sh_video->disp_h = stream_read_dword(demuxer->stream);
|
|
sh_video->disp_w = stream_read_dword(demuxer->stream);
|
|
mp_msg(MSGT_DECVIDEO, MSGL_V,
|
|
" FILM video: %d x %d\n", sh_video->disp_w,
|
|
sh_video->disp_h);
|
|
}
|
|
else
|
|
// skip height and width if no video
|
|
stream_skip(demuxer->stream, 8);
|
|
|
|
if(demuxer->audio->id<-1){
|
|
mp_msg(MSGT_DECVIDEO, MSGL_INFO,"chunk size = 0x%X \n",chunk_size);
|
|
stream_skip(demuxer->stream, chunk_size-12-8);
|
|
break; // audio disabled (or no soundcard)
|
|
}
|
|
|
|
// 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
|
|
// 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->id = 0;
|
|
demuxer->audio->sh = sh_audio;
|
|
sh_audio->ds = demuxer->audio;
|
|
|
|
sh_audio->wf = 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;
|
|
sh_audio->ds = demuxer->audio;
|
|
|
|
sh_audio->wf = malloc(sizeof(WAVEFORMATEX));
|
|
|
|
// uncompressed PCM format
|
|
sh_audio->wf->wFormatTag = 1;
|
|
sh_audio->format = 1;
|
|
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;
|
|
|
|
mp_msg(MSGT_DECVIDEO, MSGL_V,
|
|
" FILM audio: %d channels, %d bits, %d Hz\n",
|
|
sh_audio->wf->nChannels, sh_audio->wf->wBitsPerSample,
|
|
sh_audio->wf->nSamplesPerSec);
|
|
}
|
|
break;
|
|
|
|
case CHUNK_STAB:
|
|
mp_msg(MSGT_DECVIDEO, MSGL_V, "parsing STAB chunk\n");
|
|
|
|
if (sh_video)
|
|
{
|
|
sh_video->fps = stream_read_dword(demuxer->stream);
|
|
sh_video->frametime = 1.0 / sh_video->fps;
|
|
}
|
|
|
|
// fetch the number of chunks
|
|
film_data->total_chunks = stream_read_dword(demuxer->stream);
|
|
film_data->current_chunk = 0;
|
|
mp_msg(MSGT_DECVIDEO, MSGL_V,
|
|
" STAB chunk contains %d chunks\n", film_data->total_chunks);
|
|
|
|
// allocate enough entries for the chunk
|
|
film_data->chunks =
|
|
calloc(film_data->total_chunks, sizeof(film_chunk_t));
|
|
|
|
// build the chunk index
|
|
counting_chunks = 1;
|
|
for (i = 0; i < film_data->total_chunks; i++)
|
|
{
|
|
film_chunk = film_data->chunks[i];
|
|
film_chunk.chunk_offset =
|
|
demuxer->movi_start + stream_read_dword(demuxer->stream);
|
|
film_chunk.chunk_size = stream_read_dword(demuxer->stream);
|
|
film_chunk.syncinfo1 = stream_read_dword(demuxer->stream);
|
|
film_chunk.syncinfo2 = stream_read_dword(demuxer->stream);
|
|
|
|
// count chunks for the purposes of seeking
|
|
if (counting_chunks)
|
|
{
|
|
// if we're counting chunks, always count an audio chunk
|
|
if (film_chunk.syncinfo1 == 0xFFFFFFFF)
|
|
film_data->chunks_per_second++;
|
|
// if it's a video chunk, check if it's time to stop counting
|
|
else if ((film_chunk.syncinfo1 & 0x7FFFFFFF) >= sh_video->fps)
|
|
counting_chunks = 0;
|
|
else
|
|
film_data->chunks_per_second++;
|
|
}
|
|
|
|
// precalculate PTS
|
|
if (film_chunk.syncinfo1 == 0xFFFFFFFF)
|
|
{
|
|
if(demuxer->audio->id>=-1)
|
|
film_chunk.pts =
|
|
(float)total_audio_bytes / (float)sh_audio->wf->nAvgBytesPerSec;
|
|
total_audio_bytes += film_chunk.chunk_size;
|
|
}
|
|
else
|
|
film_chunk.pts =
|
|
(film_chunk.syncinfo1 & 0x7FFFFFFF) / sh_video->fps;
|
|
|
|
film_data->chunks[i] = film_chunk;
|
|
}
|
|
|
|
// in some FILM files (notably '1.09'), the length of the FDSC chunk
|
|
// follows different rules
|
|
if (chunk_size == (film_data->total_chunks * 16))
|
|
header_size -= 16;
|
|
break;
|
|
|
|
default:
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "Unrecognized FILM header chunk: %08X\n",
|
|
chunk_type);
|
|
return(NULL);
|
|
break;
|
|
}
|
|
}
|
|
|
|
demuxer->priv = film_data;
|
|
|
|
return demuxer;
|
|
}
|
|
|
|
static void demux_close_film(demuxer_t* demuxer) {
|
|
film_data_t *film_data = demuxer->priv;
|
|
|
|
if(!film_data)
|
|
return;
|
|
if(film_data->chunks)
|
|
free(film_data->chunks);
|
|
free(film_data);
|
|
|
|
}
|
|
|
|
static int film_check_file(demuxer_t* demuxer)
|
|
{
|
|
int signature=stream_read_fourcc(demuxer->stream);
|
|
|
|
// check for the FILM file magic number
|
|
if(signature==mmioFOURCC('F', 'I', 'L', 'M'))
|
|
return DEMUXER_TYPE_FILM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
const demuxer_desc_t demuxer_desc_film = {
|
|
"FILM/CPK demuxer for Sega Saturn CD-ROM games",
|
|
"film",
|
|
"FILM",
|
|
"Mike Melanson",
|
|
"",
|
|
DEMUXER_TYPE_FILM,
|
|
0, // unsafe autodetect (short signature)
|
|
film_check_file,
|
|
demux_film_fill_buffer,
|
|
demux_open_film,
|
|
demux_close_film,
|
|
demux_seek_film,
|
|
NULL
|
|
};
|