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author | melanson <melanson@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-02-10 01:23:36 +0000 |
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committer | melanson <melanson@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-02-10 01:23:36 +0000 |
commit | b3cf29263b9fa75643621490d581d2db02860813 (patch) | |
tree | c8dfbbaf1a36942515622b8338d22d73786b940f /libmpdemux/demux_film.c | |
parent | 00d399805667f38c9508b63345fed34b7f8c2131 (diff) | |
download | mpv-b3cf29263b9fa75643621490d581d2db02860813.tar.bz2 mpv-b3cf29263b9fa75643621490d581d2db02860813.tar.xz |
Fixed FILM demuxer so that it now plays (my) FILM files
correctly; modified Cinepak decoder in order to deal with the deviant CVID
data from FILM files
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4629 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libmpdemux/demux_film.c')
-rw-r--r-- | libmpdemux/demux_film.c | 143 |
1 files changed, 118 insertions, 25 deletions
diff --git a/libmpdemux/demux_film.c b/libmpdemux/demux_film.c index 0c8650ca79..86992bad28 100644 --- a/libmpdemux/demux_film.c +++ b/libmpdemux/demux_film.c @@ -1,6 +1,9 @@ /* 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/ */ #include <stdio.h> @@ -20,6 +23,10 @@ #define CHUNK_FDSC mmioFOURCC('F', 'D', 'S', 'C') #define CHUNK_STAB mmioFOURCC('S', 'T', 'A', 'B') +#define VERSION_1_01 mmioFOURCC('1', '.', '0', '1') + +#define MAGIC_FPS_CONSTANT 27 + typedef struct _film_chunk_t { off_t chunk_offset; @@ -39,6 +46,8 @@ typedef struct _film_data_t int total_video_chunks; int total_audio_sample_count; film_chunk_t *chunks; + unsigned int ticks; + unsigned int film_version; } film_data_t; #if 0 @@ -65,7 +74,11 @@ void demux_seek_film(demuxer_t *demuxer,float rel_seek_secs,int flags) // 1 = successfully read a packet int demux_film_fill_buffer(demuxer_t *demuxer) { + 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; @@ -77,16 +90,82 @@ int demux_film_fill_buffer(demuxer_t *demuxer) // 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 flags1 indicates an audio chunk) if (film_chunk.flags1 == 0xFFFFFFFF) - ds_read_packet(demuxer->audio, demuxer->stream, film_chunk.chunk_size, - 0, /* pts */ - film_chunk.chunk_offset, 0); + { + demux_packet_t* dp=new_demux_packet(film_chunk.chunk_size); + stream_read(demuxer->stream, dp->buffer, film_chunk.chunk_size); + dp->pts = 0; + 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; + } + + // append packet to DS stream + ds_add_packet(demuxer->audio, dp); + film_data->current_chunk++; + } else - ds_read_packet(demuxer->video, demuxer->stream, film_chunk.chunk_size, - film_chunk.video_chunk_number / sh_video->fps, - film_chunk.chunk_offset, 0); + { + // check the tick to see if it's time to dispatch a new frame + if ((film_data->film_version == VERSION_1_01) && + ((film_chunk.flags1 & 0x7FFFFFFF) != film_data->ticks++)) + { + demux_packet_t* dp=new_demux_packet(0); + dp->pts = 0; + dp->pos = 0; + dp->flags = 0; + ds_add_packet(demuxer->video, dp); + } + // if the demuxer is dealing with CVID data, deal with it a special way + else 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); + + // these CVID data chunks appear to have 2 extra bytes; skip them + stream_read(demuxer->stream, dp->buffer, 10); + stream_skip(demuxer->stream, 2); + stream_read(demuxer->stream, dp->buffer + 10, film_chunk.chunk_size - 12); + dp->pts = film_chunk.video_chunk_number / sh_video->fps; + dp->pos = film_chunk.chunk_offset; + dp->flags = (film_chunk.flags1 & 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; + 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); + film_data->current_chunk++; + } + else + { + ds_read_packet(demuxer->video, demuxer->stream, film_chunk.chunk_size, + film_chunk.video_chunk_number / sh_video->fps, /* pts */ + film_chunk.chunk_offset, (film_chunk.flags1 & 0x80000000) ? 1 : 0); + film_data->current_chunk++; + } + } - film_data->current_chunk++; return 1; } @@ -110,6 +189,7 @@ demuxer_t* demux_open_film(demuxer_t* demuxer) film_data->current_chunk = 0; film_data->total_video_chunks = 0; film_data->chunks = NULL; + film_data->ticks = 0; // go back to the beginning stream_reset(demuxer->stream); @@ -127,12 +207,13 @@ 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_data->film_version = stream_read_fourcc(demuxer->stream); demuxer->movi_start = header_size; demuxer->movi_end = demuxer->stream->end_pos; header_size -= 16; // skip to where the next chunk should be - stream_skip(demuxer->stream, 8); + stream_skip(demuxer->stream, 4); // traverse through the header while (header_size > 0) @@ -158,11 +239,10 @@ 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); - sh_video->fps = stream_read_char(demuxer->stream); - sh_video->frametime = 1/sh_video->fps; + stream_skip(demuxer->stream, 1); // unknown byte mp_msg(MSGT_DECVIDEO, MSGL_V, - " FILM video: %d x %d, %f fps\n", sh_video->disp_w, - sh_video->disp_h, sh_video->fps); + " FILM video: %d x %d\n", sh_video->disp_w, + sh_video->disp_h); } else stream_skip(demuxer->stream, 9); @@ -176,7 +256,6 @@ demuxer_t* demux_open_film(demuxer_t* demuxer) demuxer->audio->sh = sh_audio; sh_audio->ds = demuxer->audio; - // go through the bother of making a WAVEFORMATEX structure sh_audio->wf = (WAVEFORMATEX *)malloc(sizeof(WAVEFORMATEX)); // uncompressed PCM format @@ -187,7 +266,8 @@ demuxer_t* demux_open_film(demuxer_t* demuxer) 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 / 8; + 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, @@ -201,8 +281,15 @@ demuxer_t* demux_open_film(demuxer_t* demuxer) case CHUNK_STAB: mp_msg(MSGT_DECVIDEO, MSGL_V, "parsing STAB chunk\n"); - // skip unknown dword - stream_skip(demuxer->stream, 4); + + // FPS hack based on empirical observation + if (sh_video) + { + sh_video->fps = stream_read_dword(demuxer->stream); + if (film_data->film_version != VERSION_1_01) + sh_video->fps = MAGIC_FPS_CONSTANT; + sh_video->frametime = 1 / sh_video->fps; + } // fetch the number of chunks film_data->total_chunks = stream_read_dword(demuxer->stream); @@ -220,22 +307,28 @@ demuxer_t* demux_open_film(demuxer_t* demuxer) 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) - 8; + film_chunk.chunk_size = stream_read_dword(demuxer->stream); film_chunk.flags1 = stream_read_dword(demuxer->stream); film_chunk.flags2 = stream_read_dword(demuxer->stream); film_data->chunks[i] = film_chunk; // audio housekeeping - if ((film_chunk.flags1 == 0xFFFFFFFF) && - (film_chunk.chunk_size > largest_audio_chunk)) - largest_audio_chunk = film_chunk.chunk_size; - film_data->total_audio_sample_count += - (chunk_size / sh_audio->wf->nChannels); + if (sh_audio) + { + if ((film_chunk.flags1 == 0xFFFFFFFF) && + (film_chunk.chunk_size > largest_audio_chunk)) + largest_audio_chunk = film_chunk.chunk_size; + film_data->total_audio_sample_count += + (chunk_size / sh_audio->wf->nChannels); + } // video housekeeping - if (film_chunk.flags1 != 0xFFFFFFFF) - film_chunk.video_chunk_number = - film_data->total_video_chunks++; + if (sh_video) + { + if (film_chunk.flags1 != 0xFFFFFFFF) + film_chunk.video_chunk_number = + film_data->total_video_chunks++; + } } break; |