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mpv/libmpdemux/aviheader.c
reimar ca2af2d0e7 Add support for parsing audio streams (though should be easy to extend to video) 
via libavcodec.
Parsing can be done at the demuxer stage (currently disabled) or at the decoder
(ad_ffmpeg, enabled).
Should allow using the libavcodec AAC, DTS, ... decoders independent of container
format.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@30130 b3059339-0415-0410-9bf9-f77b7e298cf2
2009-12-27 15:28:01 +00:00

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/*
* 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 "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "stream/stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "aviheader.h"
#include "libavutil/common.h"
static MainAVIHeader avih;
void print_avih(MainAVIHeader *h, int verbose_level);
void print_avih_flags(MainAVIHeader *h, int verbose_level);
void print_strh(AVIStreamHeader *h, int verbose_level);
void print_wave_header(WAVEFORMATEX *h, int verbose_level);
void print_video_header(BITMAPINFOHEADER *h, int verbose_level);
void print_index(AVIINDEXENTRY *idx,int idx_size, int verbose_level);
void print_avistdindex_chunk(avistdindex_chunk *h, int verbose_level);
void print_avisuperindex_chunk(avisuperindex_chunk *h, int verbose_level);
void print_vprp(VideoPropHeader *vprp, int verbose_level);
static int odml_get_vstream_id(int id, unsigned char res[])
{
unsigned char *p = (unsigned char *)&id;
id = le2me_32(id);
if (p[2] == 'd') {
if (res) {
res[0] = p[0];
res[1] = p[1];
}
return 1;
}
return 0;
}
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;
// Imply -forceidx if -saveidx is specified
if (index_file_save)
index_mode = 2;
//
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_msg(MSGT_HEADER,MSGL_WARN,MSGTR_MPDEMUX_AVIHDR_EmptyList);
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_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_FoundMovieAt,(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
// suplied 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_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_VideoID, "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_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_AudioID, "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);
*(uint32_t *)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(BITMAPINFOHEADER)), 1);
// sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_FoundBitmapInfoHeader,chunksize,sizeof(BITMAPINFOHEADER));
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(BITMAPINFOHEADER))
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_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_RegeneratingKeyfTableForMPG4V1);
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_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_RegeneratingKeyfTableForDIVX3);
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_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_RegeneratingKeyfTableForMPEG4);
break;
}
} else
if(last_fccType==streamtypeAUDIO){
unsigned wf_size = chunksize<sizeof(WAVEFORMATEX)?sizeof(WAVEFORMATEX):chunksize;
sh_audio->wf=calloc(wf_size,1);
// sh_audio->wf=malloc(chunksize); memset(sh_audio->wf,0,chunksize);
mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_FoundWaveFmt,chunksize,sizeof(WAVEFORMATEX));
stream_read(demuxer->stream,(char*) sh_audio->wf,chunksize);
le2me_WAVEFORMATEX(sh_audio->wf);
if (sh_audio->wf->cbSize != 0 &&
wf_size < sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize) {
sh_audio->wf=realloc(sh_audio->wf, sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize);
}
sh_audio->format=sh_audio->wf->wFormatTag;
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_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_FoundAVIV2Header, 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 i;
priv->idx_size=size2>>4;
mp_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_ReadingIndexBlockChunksForFrames,
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);
stream_read(demuxer->stream,(char*)priv->idx,priv->idx_size<<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_msg(MSGT_HEADER, MSGL_V, MSGTR_MPDEMUX_AVIHDR_AdditionalRIFFHdr);
stream_read(demuxer->stream, riff_type, sizeof riff_type);
if (strncmp(riff_type, "AVIX", sizeof riff_type))
mp_msg(MSGT_HEADER, MSGL_WARN, MSGTR_MPDEMUX_AVIHDR_WarnNotExtendedAVIHdr);
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_msg(MSGT_HEADER,MSGL_V,MSGTR_MPDEMUX_AVIHDR_BrokenChunk,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_msg(MSGT_HEADER, MSGL_INFO, MSGTR_MPDEMUX_AVIHDR_BuildingODMLidx, 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_msg(MSGT_HEADER, MSGL_WARN, MSGTR_MPDEMUX_AVIHDR_BrokenODMLfile);
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);
}
/* Read a saved index file */
if (index_file_load) {
FILE *fp;
char magic[7];
unsigned int i;
if ((fp = fopen(index_file_load, "r")) == NULL) {
mp_msg(MSGT_HEADER,MSGL_ERR, MSGTR_MPDEMUX_AVIHDR_CantReadIdxFile, index_file_load, strerror(errno));
goto gen_index;
}
fread(&magic, 6, 1, fp);
if (strncmp(magic, "MPIDX1", 6)) {
mp_msg(MSGT_HEADER,MSGL_ERR, MSGTR_MPDEMUX_AVIHDR_NotValidMPidxFile, index_file_load);
goto gen_index;
}
fread(&priv->idx_size, sizeof(priv->idx_size), 1, fp);
priv->idx=malloc(priv->idx_size*sizeof(AVIINDEXENTRY));
if (!priv->idx) {
mp_msg(MSGT_HEADER,MSGL_ERR, MSGTR_MPDEMUX_AVIHDR_FailedMallocForIdxFile, index_file_load);
priv->idx_size = 0;
goto gen_index;
}
for (i=0; i<priv->idx_size;i++) {
AVIINDEXENTRY *idx;
idx=&((AVIINDEXENTRY *)priv->idx)[i];
fread(idx, sizeof(AVIINDEXENTRY), 1, fp);
if (feof(fp)) {
mp_msg(MSGT_HEADER,MSGL_ERR, MSGTR_MPDEMUX_AVIHDR_PrematureEOF, index_file_load);
free(priv->idx);
priv->idx_size = 0;
goto gen_index;
}
}
fclose(fp);
mp_msg(MSGT_HEADER,MSGL_INFO, MSGTR_MPDEMUX_AVIHDR_IdxFileLoaded, index_file_load);
}
gen_index:
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_msg(MSGT_HEADER,MSGL_STATUS,MSGTR_MPDEMUX_AVIHDR_GeneratingIdx,
(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_msg(MSGT_HEADER,MSGL_INFO,MSGTR_MPDEMUX_AVIHDR_IdxGeneratedForHowManyChunks,priv->idx_size);
if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2);
/* Write generated index to a file */
if (index_file_save) {
FILE *fp;
unsigned int i;
if ((fp=fopen(index_file_save, "w")) == NULL) {
mp_msg(MSGT_HEADER,MSGL_ERR, MSGTR_MPDEMUX_AVIHDR_Failed2WriteIdxFile, index_file_save, strerror(errno));
return;
}
fwrite("MPIDX1", 6, 1, fp);
fwrite(&priv->idx_size, sizeof(priv->idx_size), 1, fp);
for (i=0; i<priv->idx_size; i++) {
AVIINDEXENTRY *idx = &((AVIINDEXENTRY *)priv->idx)[i];
fwrite(idx, sizeof(AVIINDEXENTRY), 1, fp);
}
fclose(fp);
mp_msg(MSGT_HEADER,MSGL_INFO, MSGTR_MPDEMUX_AVIHDR_IdxFileSaved, index_file_save);
}
}
}
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