From 988c45fb6a35e886aed9129d1d983dc82c616353 Mon Sep 17 00:00:00 2001 From: arpi Date: Sun, 16 Jun 2002 02:53:22 +0000 Subject: some cleanup and fixes, but the badquality.asf is still buggy :( git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@6443 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libmpdemux/demux_asf.c | 172 ++++++++++++++++++++++++++++--------------------- 1 file changed, 100 insertions(+), 72 deletions(-) (limited to 'libmpdemux/demux_asf.c') diff --git a/libmpdemux/demux_asf.c b/libmpdemux/demux_asf.c index 448327cd64..92c40fada4 100644 --- a/libmpdemux/demux_asf.c +++ b/libmpdemux/demux_asf.c @@ -151,18 +151,20 @@ int demux_asf_fill_buffer(demuxer_t *demux){ stream_read(demux->stream,asf_packet,asf_packetsize); if(demux->stream->eof) return 0; // EOF - if(asf_packet[0]==0x82){ - unsigned char flags=asf_packet[3]; - unsigned char segtype=asf_packet[4]; - unsigned char* p=&asf_packet[5]; + { unsigned char ecc_flags=asf_packet[0]; + unsigned char* p=&asf_packet[1+(ecc_flags&15)]; unsigned char* p_end=asf_packet+asf_packetsize; - unsigned long time; - unsigned short duration; + unsigned char flags=p[0]; + unsigned char segtype=p[1]; + int padding; + int plen; + int sequence; + unsigned long time=0; + unsigned short duration=0; + int segs=1; unsigned char segsizetype=0x80; - int seg; - int padding=0; - int plen; + int seg=-1; if(verbose>1){ int i; @@ -172,45 +174,63 @@ int demux_asf_fill_buffer(demuxer_t *demux){ //if(segtype!=0x5d) printf("Warning! packet[4] != 0x5d \n"); - // Calculate packet size (plen): - if(flags&0x40){ + p+=2; // skip flags & segtype + + // Read packet size (plen): + switch((flags>>5)&3){ + case 3: plen=LOAD_LE32(p);p+=4;break; // dword + case 2: plen=LOAD_LE16(p);p+=2;break; // word + case 1: plen=p[0];p++;break; // byte + } + + // Read sequence: + switch((flags>>1)&3){ + case 3: sequence=LOAD_LE32(p);p+=4;break; // dword + case 2: sequence=LOAD_LE16(p);p+=2;break; // word + case 1: sequence=p[0];p++;break; // byte + default: sequence=0; + } + + // Read padding size (padding): + switch((flags>>3)&3){ + case 3: padding=LOAD_LE32(p);p+=4;break; // dword + case 2: padding=LOAD_LE16(p);p+=2;break; // word + case 1: padding=p[0];p++;break; // byte + default: padding=0; + } + + if(((flags>>5)&3)!=0){ // Explicit (absoulte) packet size - plen=LOAD_LE16(p); p+=2; mp_dbg(MSGT_DEMUX,MSGL_DBG2,"Explicit packet size specified: %d \n",plen); if(plen>asf_packetsize) mp_msg(MSGT_DEMUX,MSGL_V,"Warning! plen>packetsize! (%d>%d) \n",plen,asf_packetsize); - if(flags&(8|16)){ - padding=p[0];p++; - if(flags&16){ padding|=p[0]<<8; p++;} - mp_dbg(MSGT_DEMUX,MSGL_DBG2,"Warning! explicit=%d padding=%d \n",plen,asf_packetsize-padding); - } - } else { + } else { // Padding (relative) size - if(flags&8){ - padding=p[0];++p; - } else - if(flags&16){ - padding=LOAD_LE16(p);p+=2; - } plen=asf_packetsize-padding; - } + } + // Read time & duration: time = LOAD_LE32(p); p+=4; duration = LOAD_LE16(p); p+=2; + + // Read payload flags: if(flags&1){ - segsizetype=p[0] & 0xC0; + // multiple sub-packets + segsizetype=p[0]>>6; segs=p[0] & 0x3F; ++p; } - mp_dbg(MSGT_DEMUX,MSGL_DBG4,"%08X: flag=%02X segs=%d pad=%d time=%ld dur=%d\n", - demux->filepos,flags,segs,padding,time,duration); + mp_dbg(MSGT_DEMUX,MSGL_DBG4,"%08X: flag=%02X segs=%d seq=%d plen=%d pad=%d time=%ld dur=%d\n", + demux->filepos,flags,segs,sequence,plen,padding,time,duration); + for(seg=0;seg=p_end) mp_msg(MSGT_DEMUX,MSGL_V,"Warning! invalid packet 1, sig11 coming soon...\n"); @@ -221,53 +241,61 @@ int demux_asf_fill_buffer(demuxer_t *demux){ for(i=0;i<16;i++) printf(" %02X",p[i]); printf("\n"); } - + streamno=p[0]&0x7F; if(p[0]&0x80) keyframe=1; - seq=p[1]; - p+=2; - - switch(segtype){ - case 0x55: - x=*((unsigned char*)p); - p++; - break; - case 0x59: - x=LOAD_LE16(p); - p+=2; - break; - case 0x5D: - x=LOAD_LE32(p); - p+=4; - break; - default: - mp_msg(MSGT_DEMUX,MSGL_V,"Warning! unknown segtype == 0x%2X \n",segtype); - x=0; - } + p++; + + // Read media object number (seq): + switch((segtype>>4)&3){ + case 3: seq=LOAD_LE32(p);p+=4;break; // dword + case 2: seq=LOAD_LE16(p);p+=2;break; // word + case 1: seq=p[0];p++;break; // byte + default: seq=0; + } + + // Read offset or timestamp: + switch((segtype>>2)&3){ + case 3: x=LOAD_LE32(p);p+=4;break; // dword + case 2: x=LOAD_LE16(p);p+=2;break; // word + case 1: x=p[0];p++;break; // byte + default: x=0; + } - type=p[0]; p++; // 0x01: grouping 0x08: single - - switch(type){ - case 0x01: + // Read replic.data len: + switch((segtype)&3){ + case 3: rlen=LOAD_LE32(p);p+=4;break; // dword + case 2: rlen=LOAD_LE16(p);p+=2;break; // word + case 1: rlen=p[0];p++;break; // byte + default: rlen=0; + } + +// printf("### rlen=%d \n",rlen); + + switch(rlen){ + case 0x01: // 1 = special, means grouping //printf("grouping: %02X \n",p[0]); - ++p; // skip unknown byte - break; - case 0x08: - //printf("!!! obj_length = %d\n",*((unsigned long*)p)); - p+=4; - time2=LOAD_LE32(p);p+=4; + ++p; // skip PTS delta break; default: - mp_msg(MSGT_DEMUX,MSGL_V,"unknown segment type: 0x%02X \n",type); + if(rlen>=8){ + p+=4; // skip object size + time2=LOAD_LE32(p); // read PTS + p+=rlen-4; + } else { + mp_msg(MSGT_DEMUX,MSGL_V,"unknown segment type (rlen): 0x%02X \n",rlen); + p+=rlen; + } } if(flags&1){ // multiple segments - if(segsizetype==0x40){ - len=*((unsigned char*)p);p++; // 1 byte - } else { - len=LOAD_LE16(p);p+=2; // 2 byte - } + switch(segsizetype){ + case 3: len=LOAD_LE32(p);p+=4;break; // dword + case 2: len=LOAD_LE16(p);p+=2;break; // word + case 1: len=p[0];p++;break; // byte + default: len=plen-(p-asf_packet); // ??? + } } else { // single segment len=plen-(p-asf_packet); @@ -275,9 +303,9 @@ int demux_asf_fill_buffer(demuxer_t *demux){ if(len<0 || (p+len)>p_end){ mp_msg(MSGT_DEMUX,MSGL_V,"ASF_parser: warning! segment len=%d\n",len); } - mp_dbg(MSGT_DEMUX,MSGL_DBG4," seg #%d: streamno=%d seq=%d type=%02X len=%d\n",seg,streamno,seq,type,len); + mp_dbg(MSGT_DEMUX,MSGL_DBG4," seg #%d: streamno=%d seq=%d type=%02X len=%d\n",seg,streamno,seq,rlen,len); - switch(type){ + switch(rlen){ case 0x01: // GROUPING: //printf("ASF_parser: warning! grouping (flag=1) not yet supported!\n",len); @@ -294,7 +322,7 @@ int demux_asf_fill_buffer(demuxer_t *demux){ mp_msg(MSGT_DEMUX,MSGL_V,"ASF_parser: warning! groups total != len\n"); } break; - case 0x08: + default: // NO GROUPING: //printf("fragment offset: %d \n",sh->x); demux_asf_read_packet(demux,p,len,streamno,seq,time2,duration,x,keyframe); -- cgit v1.2.3