diff options
Diffstat (limited to 'demux/aviheader.c')
| -rw-r--r-- | demux/aviheader.c | 674 |
1 files changed, 674 insertions, 0 deletions
diff --git a/demux/aviheader.c b/demux/aviheader.c new file mode 100644 index 0000000000..0c47386dc5 --- /dev/null +++ b/demux/aviheader.c @@ -0,0 +1,674 @@ +/* + * This file is part of MPlayer. + * + * MPlayer is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * MPlayer 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with MPlayer; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> + +#include <libavutil/common.h> +#include <libavutil/intreadwrite.h> + +#include "config.h" +#include "mp_msg.h" + +#include "stream/stream.h" +#include "demuxer.h" +#include "stheader.h" +#include "aviprint.h" +#include "aviheader.h" + +static MainAVIHeader avih; + +static int odml_get_vstream_id(int id, unsigned char res[]) +{ + if ((char)(id >> 16) == 'd') { + if (res) { + res[0] = id; + res[1] = id >> 8; + } + return 1; + } + return 0; +} + +static int avi_idx_cmp(const void *elem1, const void *elem2) +{ + register off_t a = AVI_IDX_OFFSET((AVIINDEXENTRY *)elem1); + register off_t b = AVI_IDX_OFFSET((AVIINDEXENTRY *)elem2); + return (a > b) - (b > a); +} + +void read_avi_header(demuxer_t *demuxer,int index_mode){ +sh_audio_t *sh_audio=NULL; +sh_video_t *sh_video=NULL; +int stream_id=-1; +int idxfix_videostream=0; +int idxfix_divx=0; +avi_priv_t* priv=demuxer->priv; +off_t list_end=0; + +//---- AVI header: +priv->idx_size=0; +priv->audio_streams=0; +while(1){ + int id=stream_read_dword_le(demuxer->stream); + unsigned chunksize,size2; + static int last_fccType=0; + static int last_fccHandler=0; + char* hdr=NULL; + // + if(stream_eof(demuxer->stream)) break; + // + if(id==mmioFOURCC('L','I','S','T')){ + unsigned len=stream_read_dword_le(demuxer->stream); // list size + id=stream_read_dword_le(demuxer->stream); // list type + mp_msg(MSGT_HEADER,MSGL_DBG2,"LIST %.4s len=%u\n",(char *) &id,len); + if(len >= 4) { + len -= 4; + list_end=stream_tell(demuxer->stream)+((len+1)&(~1)); + } else { + mp_tmsg(MSGT_HEADER,MSGL_WARN,"** empty list?!\n"); + list_end = 0; + } + mp_msg(MSGT_HEADER,MSGL_V,"list_end=0x%X\n",(int)list_end); + if(id==listtypeAVIMOVIE){ + // found MOVI header + if(!demuxer->movi_start) demuxer->movi_start=stream_tell(demuxer->stream); + demuxer->movi_end=stream_tell(demuxer->stream)+len; + mp_tmsg(MSGT_HEADER,MSGL_V,"Found movie at 0x%X - 0x%X\n",(int)demuxer->movi_start,(int)demuxer->movi_end); + if(demuxer->stream->end_pos>demuxer->movi_end) demuxer->movi_end=demuxer->stream->end_pos; + if(index_mode==-2 || index_mode==2 || index_mode==0) + break; // reading from non-seekable source (stdin) or forced index or no index forced + if(list_end>0) stream_seek(demuxer->stream,list_end); // skip movi + list_end=0; + } + continue; + } + size2=stream_read_dword_le(demuxer->stream); + mp_msg(MSGT_HEADER,MSGL_DBG2,"CHUNK %.4s len=%u\n",(char *) &id,size2); + chunksize=(size2+1)&(~1); + switch(id){ + + // Indicates where the subject of the file is archived + case mmioFOURCC('I','A','R','L'): hdr="Archival Location";break; + // Lists the artist of the original subject of the file; + // for example, "Michaelangelo." + case mmioFOURCC('I','A','R','T'): hdr="Artist";break; + // Lists the name of the person or organization that commissioned + // the subject of the file; for example "Pope Julian II." + case mmioFOURCC('I','C','M','S'): hdr="Commissioned";break; + // Provides general comments about the file or the subject + // of the file. If the comment is several sentences long, end each + // sentence with a period. Do not include new-line characters. + case mmioFOURCC('I','C','M','T'): hdr="Comments";break; + // Records the copyright information for the file; for example, + // "Copyright Encyclopedia International 1991." If there are multiple + // copyrights, separate them by semicolon followed by a space. + case mmioFOURCC('I','C','O','P'): hdr="Copyright";break; + // Describes whether an image has been cropped and, if so, how it + // was cropped; for example, "lower-right corner." + case mmioFOURCC('I','C','R','D'): hdr="Creation Date";break; + // Describes whether an image has been cropped and, if so, how it + // was cropped; for example, "lower-right corner." + case mmioFOURCC('I','C','R','P'): hdr="Cropped";break; + // Specifies the size of the original subject of the file; for + // example, "8.5 in h, 11 in w." + case mmioFOURCC('I','D','I','M'): hdr="Dimensions";break; + // Stores dots per inch setting of the digitizer used to + // produce the file, such as "300." + case mmioFOURCC('I','D','P','I'): hdr="Dots Per Inch";break; + // Stores the of the engineer who worked on the file. If there are + // multiple engineers, separate the names by a semicolon and a blank; + // for example, "Smith, John; Adams, Joe." + case mmioFOURCC('I','E','N','G'): hdr="Engineer";break; + // Describes the original work, such as "landscape,", "portrait," + // "still liefe," etc. + case mmioFOURCC('I','G','N','R'): hdr="Genre";break; + // Provides a list of keywords that refer to the file or subject of the + // file. Separate multiple keywords with a semicolon and a blank; + // for example, "Seattle, aerial view; scenery." + case mmioFOURCC('I','K','E','Y'): hdr="Keywords";break; + // ILGT - Describes the changes in the lightness settings on the digitizer + // required to produce the file. Note that the format of this information + // depends on the hardware used. + case mmioFOURCC('I','L','G','T'): hdr="Lightness";break; + // IMED - Decribes the original subject of the file, such as + // "computer image," "drawing," "lithograph," and so on. + case mmioFOURCC('I','M','E','D'): hdr="Medium";break; + // INAM - Stores the title of the subject of the file, such as + // "Seattle from Above." + case mmioFOURCC('I','N','A','M'): hdr="Title";break; + // IPLT - Specifies the number of colors requested when digitizing + // an image, such as "256." + case mmioFOURCC('I','P','L','T'): hdr="Palette Setting";break; + // IPRD - Specifies the name of title the file was originally intended + // for, such as "Encyclopedia of Pacific Northwest Geography." + case mmioFOURCC('I','P','R','D'): hdr="Product";break; + // ISBJ - Decsribes the contents of the file, such as + // "Aerial view of Seattle." + case mmioFOURCC('I','S','B','J'): hdr="Subject";break; + // ISFT - Identifies the name of the software packages used to create the + // file, such as "Microsoft WaveEdit" + case mmioFOURCC('I','S','F','T'): hdr="Software";break; + // ISHP - Identifies the change in sharpness for the digitizer + // required to produce the file (the format depends on the hardware used). + case mmioFOURCC('I','S','H','P'): hdr="Sharpness";break; + // ISRC - Identifies the name of the person or organization who + // supplied the original subject of the file; for example, "Try Research." + case mmioFOURCC('I','S','R','C'): hdr="Source";break; + // ISRF - Identifies the original form of the material that was digitized, + // such as "slide," "paper," "map," and so on. This is not necessarily + // the same as IMED + case mmioFOURCC('I','S','R','F'): hdr="Source Form";break; + // ITCH - Identifies the technician who digitized the subject file; + // for example, "Smith, John." + case mmioFOURCC('I','T','C','H'): hdr="Technician";break; + case mmioFOURCC('I','S','M','P'): hdr="Time Code";break; + case mmioFOURCC('I','D','I','T'): hdr="Digitization Time";break; + + case ckidAVIMAINHDR: // read 'avih' + stream_read(demuxer->stream,(char*) &avih,FFMIN(size2,sizeof(avih))); + le2me_MainAVIHeader(&avih); // swap to machine endian + chunksize-=FFMIN(size2,sizeof(avih)); + if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_avih(&avih,MSGL_V); // else print_avih_flags(&avih,MSGL_V); + break; + case ckidSTREAMHEADER: { // read 'strh' + AVIStreamHeader h; + stream_read(demuxer->stream,(char*) &h,FFMIN(size2,sizeof(h))); + le2me_AVIStreamHeader(&h); // swap to machine endian + chunksize-=FFMIN(size2,sizeof(h)); + ++stream_id; + if(h.fccType==streamtypeVIDEO){ + sh_video=new_sh_video(demuxer,stream_id); + mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Video stream found, -vid %d\n", "aviheader", stream_id); + memcpy(&sh_video->video,&h,sizeof(h)); + sh_video->stream_delay = (float)sh_video->video.dwStart * sh_video->video.dwScale/sh_video->video.dwRate; + } else + if(h.fccType==streamtypeAUDIO){ + sh_audio=new_sh_audio(demuxer,stream_id); + mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Audio stream found, -aid %d\n", "aviheader", stream_id); + memcpy(&sh_audio->audio,&h,sizeof(h)); + sh_audio->stream_delay = (float)sh_audio->audio.dwStart * sh_audio->audio.dwScale/sh_audio->audio.dwRate; + sh_audio->needs_parsing = 1; + } + last_fccType=h.fccType; + last_fccHandler=h.fccHandler; + if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_strh(&h,MSGL_V); + break; } + case mmioFOURCC('i', 'n', 'd', 'x'): { + uint32_t i; + avisuperindex_chunk *s; + + if(!index_mode) break; + + if(chunksize<=24){ + break; + } + priv->suidx_size++; + priv->suidx = realloc_struct(priv->suidx, priv->suidx_size, sizeof (avisuperindex_chunk)); + s = &priv->suidx[priv->suidx_size-1]; + + chunksize-=24; + memcpy(s->fcc, "indx", 4); + s->dwSize = size2; + s->wLongsPerEntry = stream_read_word_le(demuxer->stream); + s->bIndexSubType = stream_read_char(demuxer->stream); + s->bIndexType = stream_read_char(demuxer->stream); + s->nEntriesInUse = stream_read_dword_le(demuxer->stream); + AV_WN32(s->dwChunkId, stream_read_dword_le(demuxer->stream)); + stream_read(demuxer->stream, (char *)s->dwReserved, 3*4); + memset(s->dwReserved, 0, 3*4); + + print_avisuperindex_chunk(s,MSGL_V); + + // Check and fix this useless crap + if(s->wLongsPerEntry != sizeof (avisuperindex_entry)/4) { + mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk size: %u\n",s->wLongsPerEntry); + s->wLongsPerEntry = sizeof(avisuperindex_entry)/4; + } + if( ((chunksize/4)/s->wLongsPerEntry) < s->nEntriesInUse){ + mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk\n"); + s->nEntriesInUse = (chunksize/4)/s->wLongsPerEntry; + } + + s->aIndex = calloc(s->nEntriesInUse, sizeof (avisuperindex_entry)); + s->stdidx = calloc(s->nEntriesInUse, sizeof (avistdindex_chunk)); + + // now the real index of indices + for (i=0; i<s->nEntriesInUse; i++) { + chunksize-=16; + s->aIndex[i].qwOffset = stream_read_qword_le(demuxer->stream); + s->aIndex[i].dwSize = stream_read_dword_le(demuxer->stream); + s->aIndex[i].dwDuration = stream_read_dword_le(demuxer->stream); + mp_msg (MSGT_HEADER, MSGL_V, "ODML (%.4s): [%d] 0x%016"PRIx64" 0x%04x %u\n", + s->dwChunkId, i, + (uint64_t)s->aIndex[i].qwOffset, s->aIndex[i].dwSize, s->aIndex[i].dwDuration); + } + + break; } + case ckidSTREAMFORMAT: { // read 'strf' + if(last_fccType==streamtypeVIDEO){ + sh_video->bih=calloc(FFMAX(chunksize, sizeof(*sh_video->bih)), 1); +// sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize); + mp_tmsg(MSGT_HEADER,MSGL_V,"Found 'bih', %u bytes of %zu\n",chunksize,sizeof(*sh_video->bih)); + stream_read(demuxer->stream,(char*) sh_video->bih,chunksize); + le2me_BITMAPINFOHEADER(sh_video->bih); // swap to machine endian + if (sh_video->bih->biSize > chunksize && sh_video->bih->biSize > sizeof(*sh_video->bih)) + sh_video->bih->biSize = chunksize; + // fixup MS-RLE header (seems to be broken for <256 color files) + if(sh_video->bih->biCompression<=1 && sh_video->bih->biSize==40) + sh_video->bih->biSize=chunksize; + if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_video_header(sh_video->bih,MSGL_V); + chunksize=0; + sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale; + sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate; + sh_video->format = sh_video->bih->biCompression; +// if(demuxer->video->id==-1) demuxer->video->id=stream_id; + // IdxFix: + idxfix_videostream=stream_id; + switch(sh_video->bih->biCompression){ + case mmioFOURCC('M', 'P', 'G', '4'): + case mmioFOURCC('m', 'p', 'g', '4'): + case mmioFOURCC('D', 'I', 'V', '1'): + idxfix_divx=3; // set index recovery mpeg4 flavour: msmpeg4v1 + mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for M$ mpg4v1 video.\n"); + break; + case mmioFOURCC('D', 'I', 'V', '3'): + case mmioFOURCC('d', 'i', 'v', '3'): + case mmioFOURCC('D', 'I', 'V', '4'): + case mmioFOURCC('d', 'i', 'v', '4'): + case mmioFOURCC('D', 'I', 'V', '5'): + case mmioFOURCC('d', 'i', 'v', '5'): + case mmioFOURCC('D', 'I', 'V', '6'): + case mmioFOURCC('d', 'i', 'v', '6'): + case mmioFOURCC('M', 'P', '4', '3'): + case mmioFOURCC('m', 'p', '4', '3'): + case mmioFOURCC('M', 'P', '4', '2'): + case mmioFOURCC('m', 'p', '4', '2'): + case mmioFOURCC('D', 'I', 'V', '2'): + case mmioFOURCC('A', 'P', '4', '1'): + idxfix_divx=1; // set index recovery mpeg4 flavour: msmpeg4v3 + mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for DIVX3 video.\n"); + break; + case mmioFOURCC('D', 'I', 'V', 'X'): + case mmioFOURCC('d', 'i', 'v', 'x'): + case mmioFOURCC('D', 'X', '5', '0'): + case mmioFOURCC('X', 'V', 'I', 'D'): + case mmioFOURCC('x', 'v', 'i', 'd'): + case mmioFOURCC('F', 'M', 'P', '4'): + case mmioFOURCC('f', 'm', 'p', '4'): + idxfix_divx=2; // set index recovery mpeg4 flavour: generic mpeg4 + mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for MPEG-4 video.\n"); + break; + } + } else + if(last_fccType==streamtypeAUDIO){ + unsigned wf_size = chunksize<sizeof(*sh_audio->wf)?sizeof(*sh_audio->wf):chunksize; + sh_audio->wf=calloc(wf_size,1); +// sh_audio->wf=malloc(chunksize); memset(sh_audio->wf,0,chunksize); + mp_tmsg(MSGT_HEADER,MSGL_V,"Found 'wf', %d bytes of %zu\n",chunksize,sizeof(*sh_audio->wf)); + stream_read(demuxer->stream,(char*) sh_audio->wf,chunksize); + le2me_WAVEFORMATEX(sh_audio->wf); + if (sh_audio->wf->cbSize != 0 && + wf_size < sizeof(*sh_audio->wf)+sh_audio->wf->cbSize) { + sh_audio->wf=realloc(sh_audio->wf, sizeof(*sh_audio->wf)+sh_audio->wf->cbSize); + } + sh_audio->format=sh_audio->wf->wFormatTag; + if (sh_audio->wf->wFormatTag == 0xfffe && sh_audio->wf->cbSize >= 22) + sh_audio->format = le2me_16(((WAVEFORMATEXTENSIBLE *)sh_audio->wf)->SubFormat); + if (sh_audio->format == 1 && + last_fccHandler == mmioFOURCC('A', 'x', 'a', 'n')) + sh_audio->format = last_fccHandler; + sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec; + chunksize=0; + if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V); + ++priv->audio_streams; +// if(demuxer->audio->id==-1) demuxer->audio->id=stream_id; + } + break; + } + case mmioFOURCC('v', 'p', 'r', 'p'): { + VideoPropHeader *vprp = malloc(chunksize); + unsigned int i; + stream_read(demuxer->stream, (void*)vprp, chunksize); + le2me_VideoPropHeader(vprp); + chunksize -= sizeof(*vprp)-sizeof(vprp->FieldInfo); + chunksize /= sizeof(VIDEO_FIELD_DESC); + if (vprp->nbFieldPerFrame > chunksize) { + vprp->nbFieldPerFrame = chunksize; + } + chunksize = 0; + for (i=0; i<vprp->nbFieldPerFrame; i++) { + le2me_VIDEO_FIELD_DESC(&vprp->FieldInfo[i]); + } + if (sh_video) { + sh_video->aspect = GET_AVI_ASPECT(vprp->dwFrameAspectRatio); + } + if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_vprp(vprp,MSGL_V); + free(vprp); + break; + } + case mmioFOURCC('d', 'm', 'l', 'h'): { + // dmlh 00 00 00 04 frms + unsigned int total_frames = stream_read_dword_le(demuxer->stream); + mp_tmsg(MSGT_HEADER,MSGL_V,"AVI: dmlh found (size=%d) (total_frames=%d)\n", chunksize, total_frames); + stream_skip(demuxer->stream, chunksize-4); + chunksize = 0; + } + break; + case ckidAVINEWINDEX: + if(demuxer->movi_end>stream_tell(demuxer->stream)) + demuxer->movi_end=stream_tell(demuxer->stream); // fixup movi-end + if(index_mode && !priv->isodml){ + int read; + int i; + priv->idx_size=size2>>4; + mp_tmsg(MSGT_HEADER,MSGL_V,"Reading INDEX block, %d chunks for %d frames (fpos=%"PRId64").\n", + priv->idx_size,avih.dwTotalFrames, (int64_t)stream_tell(demuxer->stream)); + priv->idx=malloc(priv->idx_size<<4); +// printf("\nindex to %p !!!!! (priv=%p)\n",priv->idx,priv); + read = stream_read(demuxer->stream,(char*)priv->idx,priv->idx_size<<4); + priv->idx_size = FFMAX(read, 0) >> 4; + for (i = 0; i < priv->idx_size; i++) { // swap index to machine endian + AVIINDEXENTRY *entry=(AVIINDEXENTRY*)priv->idx + i; + le2me_AVIINDEXENTRY(entry); + /* + * We (ab)use the upper word for bits 32-47 of the offset, so + * we'll clear them here. + * FIXME: AFAIK no codec uses them, but if one does it will break + */ + entry->dwFlags&=0xffff; + } + chunksize-=priv->idx_size<<4; + if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2); + } + break; + /* added May 2002 */ + case mmioFOURCC('R','I','F','F'): { + char riff_type[4]; + + mp_tmsg(MSGT_HEADER, MSGL_V, "Additional RIFF header...\n"); + stream_read(demuxer->stream, riff_type, sizeof riff_type); + if (strncmp(riff_type, "AVIX", sizeof riff_type)) + mp_tmsg(MSGT_HEADER, MSGL_WARN, "** Warning: this is no extended AVI header..\n"); + else { + /* + * We got an extended AVI header, so we need to switch to + * ODML to get seeking to work, provided we got indx chunks + * in the header (suidx_size > 0). + */ + if (priv->suidx_size > 0) + priv->isodml = 1; + } + chunksize = 0; + list_end = 0; /* a new list will follow */ + break; } + case ckidAVIPADDING: + stream_skip(demuxer->stream, chunksize); + chunksize = 0; + break; + } + if(hdr){ + mp_msg(MSGT_HEADER,MSGL_V,"hdr=%s size=%u\n",hdr,size2); + if(size2==3) + chunksize=1; // empty + else { + char buf[256]; + int len=(size2<250)?size2:250; + stream_read(demuxer->stream,buf,len); + chunksize-=len; + buf[len]=0; + mp_msg(MSGT_HEADER,MSGL_V,"%-10s: %s\n",hdr,buf); + demux_info_add(demuxer, hdr, buf); + } + } + mp_msg(MSGT_HEADER,MSGL_DBG2,"list_end=0x%"PRIX64" pos=0x%"PRIX64" chunksize=0x%"PRIX64" next=0x%"PRIX64"\n", + (int64_t)list_end, (int64_t)stream_tell(demuxer->stream), + (int64_t)chunksize, (int64_t)chunksize+(int64_t)stream_tell(demuxer->stream)); + if(list_end>0 && + chunksize+stream_tell(demuxer->stream) == list_end) list_end=0; + if(list_end>0 && chunksize+stream_tell(demuxer->stream)>list_end){ + mp_tmsg(MSGT_HEADER,MSGL_V,"Broken chunk? chunksize=%d (id=%.4s)\n",chunksize,(char *) &id); + stream_seek(demuxer->stream,list_end); + list_end=0; + } else + if(chunksize>0) stream_skip(demuxer->stream,chunksize); else + if((int)chunksize<0) mp_msg(MSGT_HEADER,MSGL_WARN,"chunksize=%u (id=%.4s)\n",chunksize,(char *) &id); + +} + +if (priv->suidx_size > 0 && priv->idx_size == 0) { + /* + * No NEWAVIINDEX, but we got an OpenDML index. + */ + priv->isodml = 1; +} + +if (priv->isodml && (index_mode==-1 || index_mode==0 || index_mode==1)) { + int i, j, k; + + avisuperindex_chunk *cx; + AVIINDEXENTRY *idx; + + + if (priv->idx_size) free(priv->idx); + priv->idx_size = 0; + priv->idx_offset = 0; + priv->idx = NULL; + + mp_tmsg(MSGT_HEADER, MSGL_INFO, "AVI: ODML: Building ODML index (%d superindexchunks).\n", priv->suidx_size); + + // read the standard indices + for (cx = &priv->suidx[0], i=0; i<priv->suidx_size; cx++, i++) { + stream_reset(demuxer->stream); + for (j=0; j<cx->nEntriesInUse; j++) { + int ret1, ret2; + memset(&cx->stdidx[j], 0, 32); + ret1 = stream_seek(demuxer->stream, (off_t)cx->aIndex[j].qwOffset); + ret2 = stream_read(demuxer->stream, (char *)&cx->stdidx[j], 32); + if (ret1 != 1 || ret2 != 32 || cx->stdidx[j].nEntriesInUse==0) { + // this is a broken file (probably incomplete) let the standard + // gen_index routine handle this + priv->isodml = 0; + priv->idx_size = 0; + mp_tmsg(MSGT_HEADER, MSGL_WARN, "AVI: ODML: Broken (incomplete?) file detected. Will use traditional index.\n"); + goto freeout; + } + + le2me_AVISTDIDXCHUNK(&cx->stdidx[j]); + print_avistdindex_chunk(&cx->stdidx[j],MSGL_V); + priv->idx_size += cx->stdidx[j].nEntriesInUse; + cx->stdidx[j].aIndex = malloc(cx->stdidx[j].nEntriesInUse*sizeof(avistdindex_entry)); + stream_read(demuxer->stream, (char *)cx->stdidx[j].aIndex, + cx->stdidx[j].nEntriesInUse*sizeof(avistdindex_entry)); + for (k=0;k<cx->stdidx[j].nEntriesInUse; k++) + le2me_AVISTDIDXENTRY(&cx->stdidx[j].aIndex[k]); + + cx->stdidx[j].dwReserved3 = 0; + + } + } + + /* + * We convert the index by translating all entries into AVIINDEXENTRYs + * and sorting them by offset. The result should be the same index + * we would get with -forceidx. + */ + + idx = priv->idx = malloc(priv->idx_size * sizeof (AVIINDEXENTRY)); + + for (cx = priv->suidx; cx != &priv->suidx[priv->suidx_size]; cx++) { + avistdindex_chunk *sic; + for (sic = cx->stdidx; sic != &cx->stdidx[cx->nEntriesInUse]; sic++) { + avistdindex_entry *sie; + for (sie = sic->aIndex; sie != &sic->aIndex[sic->nEntriesInUse]; sie++) { + uint64_t off = sic->qwBaseOffset + sie->dwOffset - 8; + memcpy(&idx->ckid, sic->dwChunkId, 4); + idx->dwChunkOffset = off; + idx->dwFlags = (off >> 32) << 16; + idx->dwChunkLength = sie->dwSize & 0x7fffffff; + idx->dwFlags |= (sie->dwSize&0x80000000)?0x0:AVIIF_KEYFRAME; // bit 31 denotes !keyframe + idx++; + } + } + } + qsort(priv->idx, priv->idx_size, sizeof(AVIINDEXENTRY), avi_idx_cmp); + + /* + Hack to work around a "wrong" index in some divx odml files + (processor_burning.avi as an example) + They have ##dc on non keyframes but the ix00 tells us they are ##db. + Read the fcc of a non-keyframe vid frame and check it. + */ + + { + uint32_t id; + uint32_t db = 0; + stream_reset (demuxer->stream); + + // find out the video stream id. I have seen files with 01db. + for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){ + unsigned char res[2]; + if (odml_get_vstream_id(idx->ckid, res)) { + db = mmioFOURCC(res[0], res[1], 'd', 'b'); + break; + } + } + + // find first non keyframe + for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){ + if (!(idx->dwFlags & AVIIF_KEYFRAME) && idx->ckid == db) break; + } + if (i<priv->idx_size && db) { + stream_seek(demuxer->stream, AVI_IDX_OFFSET(idx)); + id = stream_read_dword_le(demuxer->stream); + if (id && id != db) // index fcc and real fcc differ? fix it. + for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){ + if (!(idx->dwFlags & AVIIF_KEYFRAME) && idx->ckid == db) + idx->ckid = id; + } + } + } + + if ( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx, priv->idx_size,MSGL_DBG2); + + demuxer->movi_end=demuxer->stream->end_pos; + +freeout: + + // free unneeded stuff + cx = &priv->suidx[0]; + do { + for (j=0;j<cx->nEntriesInUse;j++) + if (cx->stdidx[j].nEntriesInUse) free(cx->stdidx[j].aIndex); + free(cx->stdidx); + + } while (cx++ != &priv->suidx[priv->suidx_size-1]); + free(priv->suidx); + +} + +if(index_mode>=2 || (priv->idx_size==0 && index_mode==1)){ + int idx_pos = 0; + // build index for file: + stream_reset(demuxer->stream); + stream_seek(demuxer->stream,demuxer->movi_start); + + priv->idx_size=0; + priv->idx=NULL; + + while(1){ + int id; + unsigned len; + off_t skip; + AVIINDEXENTRY* idx; + unsigned int c; + demuxer->filepos=stream_tell(demuxer->stream); + if(demuxer->filepos>=demuxer->movi_end && demuxer->movi_start<demuxer->movi_end) break; + id=stream_read_dword_le(demuxer->stream); + len=stream_read_dword_le(demuxer->stream); + if(id==mmioFOURCC('L','I','S','T') || id==mmioFOURCC('R', 'I', 'F', 'F')){ + id=stream_read_dword_le(demuxer->stream); // list or RIFF type + continue; + } + if(stream_eof(demuxer->stream)) break; + if(!id || avi_stream_id(id)==100) goto skip_chunk; // bad ID (or padding?) + + if(idx_pos>=priv->idx_size){ +// priv->idx_size+=32; + priv->idx_size+=1024; // +16kB + priv->idx=realloc(priv->idx,priv->idx_size*sizeof(AVIINDEXENTRY)); + if(!priv->idx){idx_pos=0; break;} // error! + } + idx=&((AVIINDEXENTRY *)priv->idx)[idx_pos++]; + idx->ckid=id; + idx->dwFlags=AVIIF_KEYFRAME; // FIXME + idx->dwFlags|=(demuxer->filepos>>16)&0xffff0000U; + idx->dwChunkOffset=(unsigned long)demuxer->filepos; + idx->dwChunkLength=len; + + c=stream_read_dword(demuxer->stream); + + if(!len) idx->dwFlags&=~AVIIF_KEYFRAME; + + // Fix keyframes for DivX files: + if(idxfix_divx) + if(avi_stream_id(id)==idxfix_videostream){ + switch(idxfix_divx){ + case 3: c=stream_read_dword(demuxer->stream)<<5; //skip 32+5 bits for m$mpeg4v1 + case 1: if(c&0x40000000) idx->dwFlags&=~AVIIF_KEYFRAME;break; // divx 3 + case 2: if(c==0x1B6) idx->dwFlags&=~AVIIF_KEYFRAME;break; // divx 4 + } + } + + // update status line: + { static off_t lastpos; + off_t pos; + off_t len=demuxer->movi_end-demuxer->movi_start; + if(len){ + pos=100*(demuxer->filepos-demuxer->movi_start)/len; // % + } else { + pos=(demuxer->filepos-demuxer->movi_start)>>20; // MB + } + if(pos!=lastpos){ + lastpos=pos; + mp_tmsg(MSGT_HEADER,MSGL_STATUS, "Generating Index: %3lu %s \r", + (unsigned long)pos, len?"%":"MB"); + } + } + mp_dbg(MSGT_HEADER,MSGL_DBG2,"%08X %08X %.4s %08X %X\n",(unsigned int)demuxer->filepos,id,(char *) &id,(int)c,(unsigned int) idx->dwFlags); +#if 0 + { unsigned char tmp[64]; + int i; + stream_read(demuxer->stream,tmp,64); + printf("%.4s",&id); + for(i=0;i<64;i++) printf(" %02X",tmp[i]); + printf("\n"); + } +#endif +skip_chunk: + skip=(len+1)&(~1UL); // total bytes in this chunk + stream_seek(demuxer->stream,8+demuxer->filepos+skip); + } + priv->idx_size=idx_pos; + mp_tmsg(MSGT_HEADER,MSGL_INFO,"AVI: Generated index table for %d chunks!\n",priv->idx_size); + if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2); + +} +} |