mirror of
https://github.com/mpv-player/mpv
synced 2024-12-16 11:55:42 +00:00
39fe4d0cd3
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8028 b3059339-0415-0410-9bf9-f77b7e298cf2
391 lines
16 KiB
C
391 lines
16 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "stream.h"
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#include "demuxer.h"
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#include "stheader.h"
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#include "bswap.h"
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#include "aviheader.h"
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#define MIN(a,b) (((a)<(b))?(a):(b))
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static MainAVIHeader avih;
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extern void print_avih(MainAVIHeader *h);
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extern void print_avih_flags(MainAVIHeader *h);
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extern void print_strh(AVIStreamHeader *h);
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extern void print_wave_header(WAVEFORMATEX *h);
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extern void print_video_header(BITMAPINFOHEADER *h);
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extern void print_index(AVIINDEXENTRY *idx,int idx_size);
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void read_avi_header(demuxer_t *demuxer,int index_mode){
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sh_audio_t *sh_audio=NULL;
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sh_video_t *sh_video=NULL;
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int stream_id=-1;
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int idxfix_videostream=0;
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int idxfix_divx=0;
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avi_priv_t* priv=demuxer->priv;
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off_t list_end=0;
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//---- AVI header:
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priv->idx_size=0;
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priv->audio_streams=0;
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while(1){
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int id=stream_read_dword_le(demuxer->stream);
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unsigned chunksize,size2;
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static int last_fccType=0;
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char* hdr=NULL;
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//
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if(stream_eof(demuxer->stream)) break;
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//
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if(id==mmioFOURCC('L','I','S','T')){
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unsigned len=stream_read_dword_le(demuxer->stream); // list size
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id=stream_read_dword_le(demuxer->stream); // list type
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mp_msg(MSGT_HEADER,MSGL_DBG2,"LIST %.4s len=%u\n",(char *) &id,len);
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if(len >= 4) {
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len -= 4;
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list_end=stream_tell(demuxer->stream)+((len+1)&(~1));
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} else {
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mp_msg(MSGT_HEADER,MSGL_WARN,"** empty list?!\n");
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list_end = 0;
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}
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mp_msg(MSGT_HEADER,MSGL_V,"list_end=0x%X\n",(int)list_end);
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if(id==listtypeAVIMOVIE){
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// found MOVI header
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if(!demuxer->movi_start) demuxer->movi_start=stream_tell(demuxer->stream);
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demuxer->movi_end=stream_tell(demuxer->stream)+len;
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mp_msg(MSGT_HEADER,MSGL_V,"Found movie at 0x%X - 0x%X\n",(int)demuxer->movi_start,(int)demuxer->movi_end);
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if(demuxer->stream->end_pos>demuxer->movi_end) demuxer->movi_end=demuxer->stream->end_pos;
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if(index_mode==-2 || index_mode==2 || index_mode==0)
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break; // reading from non-seekable source (stdin) or forced index or no index forced
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if(list_end>0) stream_seek(demuxer->stream,list_end); // skip movi
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list_end=0;
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}
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continue;
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}
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size2=stream_read_dword_le(demuxer->stream);
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mp_msg(MSGT_HEADER,MSGL_DBG2,"CHUNK %.4s len=%u\n",(char *) &id,size2);
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chunksize=(size2+1)&(~1);
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switch(id){
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// Indicates where the subject of the file is archived
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case mmioFOURCC('I','A','R','L'): hdr="Archival Location";break;
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// Lists the artist of the original subject of the file;
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// for example, "Michaelangelo."
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case mmioFOURCC('I','A','R','T'): hdr="Artist";break;
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// Lists the name of the person or organization that commissioned
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// the subject of the file; for example "Pope Julian II."
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case mmioFOURCC('I','C','M','S'): hdr="Commissioned";break;
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// Provides general comments about the file or the subject
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// of the file. If the comment is several sentences long, end each
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// sentence with a period. Do not include new-line characters.
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case mmioFOURCC('I','C','M','T'): hdr="Comments";break;
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// Records the copyright information for the file; for example,
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// "Copyright Encyclopedia International 1991." If there are multiple
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// copyrights, separate them by semicolon followed by a space.
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case mmioFOURCC('I','C','O','P'): hdr="Copyright";break;
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// Describes whether an image has been cropped and, if so, how it
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// was cropped; for example, "lower-right corner."
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case mmioFOURCC('I','C','R','D'): hdr="Creation Date";break;
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// Describes whether an image has been cropped and, if so, how it
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// was cropped; for example, "lower-right corner."
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case mmioFOURCC('I','C','R','P'): hdr="Cropped";break;
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// Specifies the size of the original subject of the file; for
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// example, "8.5 in h, 11 in w."
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case mmioFOURCC('I','D','I','M'): hdr="Dimensions";break;
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// Stores dots per inch setting of the digitizer used to
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// produce the file, such as "300."
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case mmioFOURCC('I','D','P','I'): hdr="Dots Per Inch";break;
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// Stores the of the engineer who worked on the file. If there are
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// multiple engineers, separate the names by a semicolon and a blank;
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// for example, "Smith, John; Adams, Joe."
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case mmioFOURCC('I','E','N','G'): hdr="Engineer";break;
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// Describes the original work, such as "landscape,", "portrait,"
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// "still liefe," etc.
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case mmioFOURCC('I','G','N','R'): hdr="Genre";break;
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// Provides a list of keywords that refer to the file or subject of the
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// file. Separate multiple keywords with a semicolon and a blank;
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// for example, "Seattle, aerial view; scenery."
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case mmioFOURCC('I','K','E','Y'): hdr="Keywords";break;
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// ILGT - Describes the changes in the lightness settings on the digitizer
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// required to produce the file. Note that the format of this information
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// depends on the hardware used.
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case mmioFOURCC('I','L','G','T'): hdr="Lightness";break;
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// IMED - Decribes the original subject of the file, such as
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// "computer image," "drawing," "lithograph," and so on.
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case mmioFOURCC('I','M','E','D'): hdr="Medium";break;
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// INAM - Stores the title of the subject of the file, such as
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// "Seattle from Above."
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case mmioFOURCC('I','N','A','M'): hdr="Name";break;
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// IPLT - Specifies the number of colors requested when digitizing
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// an image, such as "256."
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case mmioFOURCC('I','P','L','T'): hdr="Palette Setting";break;
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// IPRD - Specifies the name of title the file was originally intended
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// for, such as "Encyclopedia of Pacific Northwest Geography."
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case mmioFOURCC('I','P','R','D'): hdr="Product";break;
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// ISBJ - Decsribes the contents of the file, such as
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// "Aerial view of Seattle."
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case mmioFOURCC('I','S','B','J'): hdr="Subject";break;
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// ISFT - Identifies the name of the software packages used to create the
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// file, such as "Microsoft WaveEdit"
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case mmioFOURCC('I','S','F','T'): hdr="Software";break;
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// ISHP - Identifies the change in sharpness for the digitizer
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// required to produce the file (the format depends on the hardware used).
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case mmioFOURCC('I','S','H','P'): hdr="Sharpness";break;
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// ISRC - Identifies the name of the person or organization who
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// suplied the original subject of the file; for example, "Try Research."
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case mmioFOURCC('I','S','R','C'): hdr="Source";break;
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// ISRF - Identifies the original form of the material that was digitized,
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// such as "slide," "paper," "map," and so on. This is not necessarily
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// the same as IMED
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case mmioFOURCC('I','S','R','F'): hdr="Source Form";break;
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// ITCH - Identifies the technician who digitized the subject file;
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// for example, "Smith, John."
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case mmioFOURCC('I','T','C','H'): hdr="Technician";break;
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case mmioFOURCC('I','S','M','P'): hdr="Time Code";break;
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case mmioFOURCC('I','D','I','T'): hdr="Digitization Time";break;
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case ckidAVIMAINHDR: // read 'avih'
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stream_read(demuxer->stream,(char*) &avih,MIN(size2,sizeof(avih)));
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le2me_MainAVIHeader(&avih); // swap to machine endian
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chunksize-=MIN(size2,sizeof(avih));
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if(verbose>0) print_avih(&avih); // else print_avih_flags(&avih);
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break;
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case ckidSTREAMHEADER: { // read 'strh'
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AVIStreamHeader h;
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stream_read(demuxer->stream,(char*) &h,MIN(size2,sizeof(h)));
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le2me_AVIStreamHeader(&h); // swap to machine endian
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chunksize-=MIN(size2,sizeof(h));
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++stream_id;
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if(h.fccType==streamtypeVIDEO){
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sh_video=new_sh_video(demuxer,stream_id);
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memcpy(&sh_video->video,&h,sizeof(h));
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} else
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if(h.fccType==streamtypeAUDIO){
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sh_audio=new_sh_audio(demuxer,stream_id);
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memcpy(&sh_audio->audio,&h,sizeof(h));
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}
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last_fccType=h.fccType;
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if(verbose>=1) print_strh(&h);
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break; }
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case ckidSTREAMFORMAT: { // read 'strf'
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if(last_fccType==streamtypeVIDEO){
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sh_video->bih=calloc((chunksize<sizeof(BITMAPINFOHEADER))?sizeof(BITMAPINFOHEADER):chunksize,1);
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// sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
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mp_msg(MSGT_HEADER,MSGL_V,"found 'bih', %u bytes of %d\n",chunksize,sizeof(BITMAPINFOHEADER));
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stream_read(demuxer->stream,(char*) sh_video->bih,chunksize);
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le2me_BITMAPINFOHEADER(sh_video->bih); // swap to machine endian
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// fixup MS-RLE header (seems to be broken for <256 color files)
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if(sh_video->bih->biCompression<=1 && sh_video->bih->biSize==40)
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sh_video->bih->biSize=chunksize;
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if(verbose>=1) print_video_header(sh_video->bih);
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chunksize=0;
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// sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
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// sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
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// if(demuxer->video->id==-1) demuxer->video->id=stream_id;
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// IdxFix:
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idxfix_videostream=stream_id;
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switch(sh_video->bih->biCompression){
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case mmioFOURCC('M', 'P', 'G', '4'):
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case mmioFOURCC('m', 'p', 'g', '4'):
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case mmioFOURCC('D', 'I', 'V', '1'):
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idxfix_divx=3; // we can fix keyframes only for divx coded files!
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mp_msg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for M$ mpg4v1 video\n");
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break;
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case mmioFOURCC('D', 'I', 'V', '3'):
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case mmioFOURCC('d', 'i', 'v', '3'):
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case mmioFOURCC('D', 'I', 'V', '4'):
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case mmioFOURCC('d', 'i', 'v', '4'):
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case mmioFOURCC('D', 'I', 'V', '5'):
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case mmioFOURCC('d', 'i', 'v', '5'):
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case mmioFOURCC('D', 'I', 'V', '6'):
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case mmioFOURCC('d', 'i', 'v', '6'):
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case mmioFOURCC('M', 'P', '4', '3'):
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case mmioFOURCC('m', 'p', '4', '3'):
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case mmioFOURCC('M', 'P', '4', '2'):
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case mmioFOURCC('m', 'p', '4', '2'):
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case mmioFOURCC('D', 'I', 'V', '2'):
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case mmioFOURCC('A', 'P', '4', '1'):
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idxfix_divx=1; // we can fix keyframes only for divx coded files!
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mp_msg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for DIVX 3 video\n");
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break;
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case mmioFOURCC('D', 'I', 'V', 'X'):
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case mmioFOURCC('d', 'i', 'v', 'x'):
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case mmioFOURCC('D', 'X', '5', '0'):
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idxfix_divx=2; // we can fix keyframes only for divx coded files!
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mp_msg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for DIVX 4 video\n");
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break;
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}
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} else
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if(last_fccType==streamtypeAUDIO){
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unsigned wf_size = chunksize<sizeof(WAVEFORMATEX)?sizeof(WAVEFORMATEX):chunksize;
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sh_audio->wf=calloc(wf_size,1);
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// sh_audio->wf=malloc(chunksize); memset(sh_audio->wf,0,chunksize);
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mp_msg(MSGT_HEADER,MSGL_V,"found 'wf', %d bytes of %d\n",chunksize,sizeof(WAVEFORMATEX));
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stream_read(demuxer->stream,(char*) sh_audio->wf,chunksize);
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le2me_WAVEFORMATEX(sh_audio->wf);
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if (sh_audio->wf->cbSize != 0 &&
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wf_size < sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize) {
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sh_audio->wf=realloc(sh_audio->wf, sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize);
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}
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chunksize=0;
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if(verbose>=1) print_wave_header(sh_audio->wf);
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++priv->audio_streams;
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// if(demuxer->audio->id==-1) demuxer->audio->id=stream_id;
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}
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break;
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}
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case ckidAVINEWINDEX:
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if(demuxer->movi_end>stream_tell(demuxer->stream))
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demuxer->movi_end=stream_tell(demuxer->stream); // fixup movi-end
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if(index_mode){
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int i;
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priv->idx_size=size2>>4;
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mp_msg(MSGT_HEADER,MSGL_V,"Reading INDEX block, %d chunks for %ld frames (fpos=%p)\n",
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priv->idx_size,avih.dwTotalFrames, stream_tell(demuxer->stream));
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priv->idx=malloc(priv->idx_size<<4);
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// printf("\nindex to %p !!!!! (priv=%p)\n",priv->idx,priv);
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stream_read(demuxer->stream,(char*)priv->idx,priv->idx_size<<4);
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for (i = 0; i < priv->idx_size; i++) // swap index to machine endian
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le2me_AVIINDEXENTRY((AVIINDEXENTRY*)priv->idx + i);
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chunksize-=priv->idx_size<<4;
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if(verbose>=2) print_index(priv->idx,priv->idx_size);
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break;
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}
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/* added May 2002 */
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case mmioFOURCC('R','I','F','F'): {
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char riff_type[4];
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mp_msg(MSGT_HEADER, MSGL_V, "additional RIFF header...\n");
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stream_read(demuxer->stream, riff_type, sizeof riff_type);
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if (strncmp(riff_type, "AVIX", sizeof riff_type))
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mp_msg(MSGT_HEADER, MSGL_WARN,
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"** warning: this is no extended AVI header..\n");
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chunksize = 0;
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list_end = 0; /* a new list will follow */
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break; }
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}
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if(hdr){
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mp_msg(MSGT_HEADER,MSGL_V,"hdr=%s size=%u\n",hdr,size2);
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if(size2==3)
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chunksize=1; // empty
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else {
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char buf[256];
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int len=(size2<250)?size2:250;
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stream_read(demuxer->stream,buf,len);
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chunksize-=len;
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buf[len]=0;
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mp_msg(MSGT_HEADER,MSGL_V,"%-10s: %s\n",hdr,buf);
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demux_info_add(demuxer, hdr, buf);
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}
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}
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mp_msg(MSGT_HEADER,MSGL_DBG2,"list_end=0x%X pos=0x%X chunksize=0x%X next=0x%X\n",
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(int)list_end, (int)stream_tell(demuxer->stream),
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chunksize, (int)chunksize+stream_tell(demuxer->stream));
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if(list_end>0 && chunksize+stream_tell(demuxer->stream)>list_end){
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mp_msg(MSGT_HEADER,MSGL_V,"Broken chunk? chunksize=%d (id=%.4s)\n",chunksize,(char *) &id);
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stream_seek(demuxer->stream,list_end);
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list_end=0;
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} else
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if(chunksize>0) stream_skip(demuxer->stream,chunksize); else
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if((int)chunksize<0) mp_msg(MSGT_HEADER,MSGL_WARN,"chunksize=%u (id=%.4s)\n",chunksize,(char *) &id);
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}
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if(index_mode>=2 || (priv->idx_size==0 && index_mode==1)){
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// build index for file:
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stream_reset(demuxer->stream);
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stream_seek(demuxer->stream,demuxer->movi_start);
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priv->idx_pos=0;
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priv->idx_size=0;
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priv->idx=NULL;
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while(1){
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int id;
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unsigned len;
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off_t skip;
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AVIINDEXENTRY* idx;
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unsigned int c;
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demuxer->filepos=stream_tell(demuxer->stream);
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if(demuxer->filepos>=demuxer->movi_end && demuxer->movi_start<demuxer->movi_end) break;
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id=stream_read_dword_le(demuxer->stream);
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len=stream_read_dword_le(demuxer->stream);
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if(id==mmioFOURCC('L','I','S','T') || id==mmioFOURCC('R', 'I', 'F', 'F')){
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id=stream_read_dword_le(demuxer->stream); // list or RIFF type
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continue;
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}
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if(stream_eof(demuxer->stream)) break;
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if(!id || avi_stream_id(id)==100) goto skip_chunk; // bad ID (or padding?)
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if(priv->idx_pos>=priv->idx_size){
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// priv->idx_size+=32;
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priv->idx_size+=1024; // +16kB
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priv->idx=realloc(priv->idx,priv->idx_size*sizeof(AVIINDEXENTRY));
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if(!priv->idx){priv->idx_pos=0; break;} // error!
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}
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idx=&((AVIINDEXENTRY *)priv->idx)[priv->idx_pos++];
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idx->ckid=id;
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idx->dwFlags=AVIIF_KEYFRAME; // FIXME
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idx->dwChunkOffset=(unsigned long)demuxer->filepos;
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idx->dwChunkLength=len;
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c=stream_read_dword(demuxer->stream);
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// Fix keyframes for DivX files:
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if(idxfix_divx)
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if(avi_stream_id(id)==idxfix_videostream){
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switch(idxfix_divx){
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case 3: c=stream_read_dword(demuxer->stream)<<5; //skip 32+5 bits for m$mpeg4v1
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case 1: if(c&0x40000000) idx->dwFlags=0;break; // divx 3
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case 2: if(c==0x1B6) idx->dwFlags=0;break; // divx 4
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}
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}
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// update status line:
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{ static off_t lastpos;
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off_t pos;
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off_t len=demuxer->movi_end-demuxer->movi_start;
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if(len){
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pos=100*(demuxer->filepos-demuxer->movi_start)/len; // %
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} else {
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pos=(demuxer->filepos-demuxer->movi_start)>>20; // MB
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}
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if(pos!=lastpos){
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lastpos=pos;
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mp_msg(MSGT_HEADER,MSGL_STATUS,"Generating Index: %3lu %s \r",
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(unsigned long)pos, len?"%":"MB");
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}
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}
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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);
|
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#if 0
|
|
{ unsigned char tmp[64];
|
|
int i;
|
|
stream_read(demuxer->stream,tmp,64);
|
|
printf("%.4s",&id);
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|
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=priv->idx_pos;
|
|
mp_msg(MSGT_HEADER,MSGL_INFO,"AVI: Generated index table for %d chunks!\n",priv->idx_size);
|
|
if(verbose>=2) print_index(priv->idx,priv->idx_size);
|
|
}
|
|
|
|
}
|
|
|
|
#undef MIN
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|
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