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compressed headers support 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2149 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi 2001-10-10 01:07:50 +00:00
parent 25f38b560e
commit 81b1e47579
1 changed files with 83 additions and 2 deletions
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85
demux_mov.c
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@ -1,11 +1,18 @@
// QuickTime MOV file parser
// based on TOOLS/movinfo.c by A'rpi & Al3x
// QuickTime MOV file parser by A'rpi
// based on TOOLS/movinfo.c by me & Al3x
// compressed header support from moov.c of the openquicktime lib.
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#ifdef HAVE_PNG
// should be detected by ./configure...
#define HAVE_ZLIB
#endif
#include "mp_msg.h"
#include "help_mp.h"
@ -19,6 +26,10 @@
#include "codec-cfg.h"
#include "stheader.h"
#ifdef HAVE_ZLIB
#include <zlib.h>
#endif
typedef struct {
unsigned int pts; // duration
unsigned int size;
@ -179,6 +190,11 @@ int mov_check_file(demuxer_t* demuxer){
if(!stream_skip(demuxer->stream,len-8)) break;
}
if(flags==1)
mp_msg(MSGT_DEMUX,MSGL_WARN,"MOV: missing data (mdat) chunk! Maybe broken file...\n");
else if(flags==2)
mp_msg(MSGT_DEMUX,MSGL_WARN,"MOV: missing header (moov/cmov) chunk! Maybe broken file...\n");
return (flags==3);
}
@ -190,8 +206,10 @@ static void lschunks(demuxer_t* demuxer,int level,off_t endpos,mov_track_t* trak
unsigned int id;
//
pos=stream_tell(demuxer->stream);
// printf("stream_tell==%d\n",pos);
if(pos>=endpos) return; // END
len=stream_read_dword(demuxer->stream);
// printf("len==%d\n",len);
if(len<8) return; // error
len-=8;
id=stream_read_dword(demuxer->stream);
@ -419,10 +437,73 @@ static void lschunks(demuxer_t* demuxer,int level,off_t endpos,mov_track_t* trak
priv->track_db++;
trak=NULL;
} else
#ifndef HAVE_ZLIB
if(id==MOV_FOURCC('c','m','o','v')){
mp_msg(MSGT_DEMUX,MSGL_ERR,MSGTR_MOVcomprhdr);
return;
}
#else
if(id==MOV_FOURCC('c','m','o','v')){
// mp_msg(MSGT_DEMUX,MSGL_ERR,MSGTR_MOVcomprhdr);
lschunks(demuxer,level+1,pos+len,NULL);
} else
if(id==MOV_FOURCC('d','c','o','m')){
// int temp=stream_read_dword(demuxer->stream);
unsigned int len=stream_read_dword(demuxer->stream);
printf("Compressed header uses %.4s algo!\n",&len);
} else
if(id==MOV_FOURCC('c','m','v','d')){
// int temp=stream_read_dword(demuxer->stream);
unsigned int moov_sz=stream_read_dword(demuxer->stream);
unsigned int cmov_sz=len-4;
unsigned char* cmov_buf=malloc(cmov_sz);
unsigned char* moov_buf=malloc(moov_sz+16);
int zret;
z_stream zstrm;
stream_t* backup;
printf("Compressed header size: %d / %d\n",cmov_sz,moov_sz);
stream_read(demuxer->stream,cmov_buf,cmov_sz);
zstrm.zalloc = (alloc_func)0;
zstrm.zfree = (free_func)0;
zstrm.opaque = (voidpf)0;
zstrm.next_in = cmov_buf;
zstrm.avail_in = cmov_sz;
zstrm.next_out = moov_buf;
zstrm.avail_out = moov_sz;
zret = inflateInit(&zstrm);
if (zret != Z_OK)
{ fprintf(stderr,"QT cmov: inflateInit err %d\n",zret);
return;
}
zret = inflate(&zstrm, Z_NO_FLUSH);
if ((zret != Z_OK) && (zret != Z_STREAM_END))
{ fprintf(stderr,"QT cmov inflate: ERR %d\n",zret);
return;
}
#if 0
else {
FILE *DecOut;
DecOut = fopen("Out.bin", "w");
fwrite(moov_buf, 1, moov_sz, DecOut);
fclose(DecOut);
}
#endif
if(moov_sz != zstrm.total_out) printf("Warning! moov size differs cmov: %d zlib: %d\n",moov_sz,zstrm.total_out);
zret = inflateEnd(&zstrm);
backup=demuxer->stream;
demuxer->stream=new_memory_stream(moov_buf,moov_sz);
stream_skip(demuxer->stream,8);
lschunks(demuxer,level+1,moov_sz,NULL); // parse uncompr. 'moov'
//free_stream(demuxer->stream);
demuxer->stream=backup;
}
#endif
pos+=len+8;
if(pos>=endpos) break;