static void
print_bg(FILE *html, char *name, u64 start, u64 len, u64 used, u64 flags,
u64 areas)
{
double frag = (double)areas / (len / 4096) * 2;
fprintf(html, "<p>%s chunk starts at %lld, size is %s, %.2f%% used, "
"%.2f%% fragmented</p>\n", chunk_type(flags), start,
pretty_size(len), 100.0 * used / len, 100.0 * frag);
fprintf(html, "<img src=\"%s\" border=\"1\" />\n", name);
}
int main(int argc, char* argv[]){
FILE *f = fopen(argc > 1 ? argv[1] : "Alice Deejay - Back In My Life.asf", "rb");
if(!f){
printf("file not found\n");
exit(1);
}
//printf("sizeof=%d\n", sizeof(objh));
//printf("sizeof=%d\n", sizeof(asfh));
fread(&asfh, sizeof(asfh), 1, f); // header obj
//for(i = 0; i < 16; i++)
// printf("%02X ", asfh.objh.guid[i]);
printf("[%s] %d (subchunks: %d)\n", chunk_type(asfh.objh.guid),
(int) asfh.objh.size, asfh.cno);
while(fread(&objh, sizeof(objh), 1, f) > 0){
int pos = ftell(f);
//for(i = 0; i < 16; i++)
// printf("%02X ", objh.guid[i]);
printf("0x%08X [%s] %d\n", pos-sizeof(objh), chunk_type(objh.guid),
(int) objh.size);
switch(*((unsigned int*)&objh.guid)){
case 0xB7DC0791: // guid_stream_header
fread(&streamh, sizeof(streamh), 1, f);
printf("stream type: %s\n", chunk_type(streamh.type));
printf("stream concealment: %s\n", chunk_type(streamh.concealment));
printf("type: %d bytes, stream: %d bytes ID: %d\n",
(int)streamh.type_size, (int)streamh.stream_size,
(int)streamh.stream_no);
printf("FILEPOS=0x%lX\n", ftell(f));
// type-specific data:
fread(buffer,streamh.type_size,1,f);
switch(*((unsigned int*)&streamh.type)){
case 0xF8699E40: // guid_audio_stream
print_wave_header((WAVEFORMATEX*)buffer);
break;
case 0xBC19EFC0: // guid_video_stream
print_video_header((BITMAPINFOHEADER*)&buffer[4 + 4 + 1 + 2]);
break;
}
// stream-specific data:
fread(buffer, streamh.stream_size, 1, f);
break;
//case 0xD6E229D1:
// return "guid_header_2_0";
case 0x8CABDCA1: // guid_file_header
fread(&fileh, sizeof(fileh), 1, f);
printf("packets: %d flags: %d pack_size: %d frame_size: %d\n",
(int)fileh.packets, (int)fileh.flags, (int)fileh.packetsize,
(int)fileh.frame_size);
break;
case 0x75b22636: // guid_data_chunk
{ int endp = pos + objh.size - sizeof(objh);
unsigned char* packet = malloc((int)fileh.packetsize);
int fpos;
fseek(f, 26, SEEK_CUR);
while((fpos = ftell(f)) < endp){
fread(packet, (int)fileh.packetsize, 1, f);
if(packet[0] == 0x82){
unsigned char flags = packet[3];
unsigned char* p = &packet[5];
unsigned long time;
unsigned short duration;
int segs = 1;
int seg;
int padding=0;
if(flags & 8){
padding = p[0];
++p;
} else
if(flags & 16){
padding = p[0] | (p[1] << 8);
p += 2;
}
time = *((unsigned long*)p);
p += 4;
duration = *((unsigned short*)p);
p += 2;
if(flags & 1){
segs = p[0] - 0x80;
++p;
}
printf("%08X: flag=%02X segs=%d pad=%d time=%ld dur=%d\n",
fpos, flags, segs, padding, time, duration);
for(seg = 0; seg < segs; seg++){
ASF_segmhdr_t* sh = (ASF_segmhdr_t*)p;
int len = 0;
p += sizeof(ASF_segmhdr_t);
if(sh->flag & 8) p+=8;// else
if(sh->flag & 1) ++p;
if(flags & 1){
len = *((unsigned short*)p);
p += 2;
}
printf(" seg #%d: streamno=%d seq=%d flag=%02X len=%d\n",
seg, sh->streamno&0x7F, sh->seq, sh->flag, len);
#ifdef SAVE_STREAMS
if(!streams[sh->streamno & 0x7F]){
char name[256];
snprintf(name, 256, "stream%02X.dat", sh->streamno & 0x7F);
streams[sh->streamno & 0x7F] = fopen(name, "wb");
}
fwrite(p, len, 1, streams[sh->streamno & 0x7F]);
#endif
p += len;
}
} else
printf("%08X: UNKNOWN %02X %02X %02X %02X %02X...\n", fpos,
packet[0], packet[1], packet[2], packet[3], packet[4]);
}
}
break;
//case 0x33000890:
// return "guid_index_chunk";
}
fseek(f, pos + objh.size - sizeof(objh), SEEK_SET);
}
fclose(f);
return 0;
}
