#define SAVE_STREAMS // simple ASF header display program by A'rpi/ESP-team // .asf fileformat docs from http://divx.euro.ru #include #include typedef struct __attribute__((packed)) { long biSize; // sizeof(BITMAPINFOHEADER) long biWidth; long biHeight; short biPlanes; // unused short biBitCount; long biCompression; // fourcc of image long biSizeImage; // size of image. For uncompressed images // ( biCompression 0 or 3 ) can be zero. long biXPelsPerMeter; // unused long biYPelsPerMeter; // unused long biClrUsed; // valid only for palettized images. // Number of colors in palette. long biClrImportant; } BITMAPINFOHEADER; typedef struct { short wFormatTag; // value that identifies compression format short nChannels; long nSamplesPerSec; long nAvgBytesPerSec; short nBlockAlign; // size of a data sample short wBitsPerSample; short cbSize; // size of format-specific data } WAVEFORMATEX; typedef struct __attribute__((packed)) { unsigned char guid[16]; unsigned long long size; } ASF_obj_header_t; typedef struct __attribute__((packed)) { ASF_obj_header_t objh; unsigned int cno; // number of subchunks unsigned char v1; // unknown (0x01) unsigned char v2; // unknown (0x02) } ASF_header_t; typedef struct __attribute__((packed)) { unsigned char client[16]; // Client GUID unsigned long long file_size; unsigned long long creat_time; //File creation time FILETIME 8 unsigned long long packets; //Number of packets UINT64 8 unsigned long long end_timestamp; //Timestamp of the end position UINT64 8 unsigned long long duration; //Duration of the playback UINT64 8 unsigned long start_timestamp; //Timestamp of the start position UINT32 4 unsigned long unk1; //Unknown, maybe reserved ( usually contains 0 ) UINT32 4 unsigned long flags; //Unknown, maybe flags ( usually contains 2 ) UINT32 4 unsigned long packetsize; //Size of packet, in bytes UINT32 4 unsigned long packetsize2; //Size of packet ( confirm ) UINT32 4 unsigned long frame_size; //Size of uncompressed video frame UINT32 4 } ASF_file_header_t; typedef struct __attribute__((packed)) { unsigned char type[16]; // Stream type (audio/video) GUID 16 unsigned char concealment[16]; // Audio error concealment type GUID 16 unsigned long long unk1; // Unknown, maybe reserved ( usually contains 0 ) UINT64 8 unsigned long type_size; //Total size of type-specific data UINT32 4 unsigned long stream_size; //Size of stream-specific data UINT32 4 unsigned short stream_no; //Stream number UINT16 2 unsigned long unk2; //Unknown UINT32 4 } ASF_stream_header_t; typedef struct __attribute__((packed)) { unsigned char streamno; unsigned char seq; unsigned long x; unsigned char flag; } ASF_segmhdr_t; ASF_header_t asfh; ASF_obj_header_t objh; ASF_file_header_t fileh; ASF_stream_header_t streamh; unsigned char buffer[8192]; int i; char* chunk_type(unsigned char* guid){ switch(*((unsigned int*)guid)){ case 0xF8699E40: return "guid_audio_stream"; case 0xBC19EFC0: return "guid_video_stream"; case 0x49f1a440: return "guid_audio_conceal_none"; case 0xbfc3cd50: return "guid_audio_conceal_interleave"; case 0x75B22630: return "guid_header"; case 0x75b22636: return "guid_data_chunk"; case 0x33000890: return "guid_index_chunk"; case 0xB7DC0791: return "guid_stream_header"; case 0xD6E229D1: return "guid_header_2_0"; case 0x8CABDCA1: return "guid_file_header"; } return NULL; } void print_wave_header(WAVEFORMATEX *h){ printf("======= WAVE Format =======\n"); printf("Format Tag: %d (0x%X)\n",h->wFormatTag,h->wFormatTag); printf("Channels: %d\n",h->nChannels); printf("Samplerate: %d\n",h->nSamplesPerSec); printf("avg byte/sec: %d\n",h->nAvgBytesPerSec); printf("Block align: %d\n",h->nBlockAlign); printf("bits/sample: %d\n",h->wBitsPerSample); printf("cbSize: %d\n",h->cbSize); switch(h->wFormatTag){ case 0x01: printf("Audio in PCM format\n");break; case 0x50: printf("Audio in MPEG Layer 1/2 format\n");break; case 0x55: printf("Audio in MPEG Layer-3 format\n");break; // ACM case 0x02: printf("Audio in MS ADPCM format\n");break; // ACM case 0x11: printf("Audio in IMA ADPCM format\n");break; // ACM case 0x31: case 0x32: printf("Audio in MS GSM 6.10 format\n");break; // ACM case 0x160: case 0x161: printf("Audio in DivX WMA format\n");break; // ACM default: printf("Audio in UNKNOWN (id=0x%X) format\n",h->wFormatTag); } printf("===========================\n"); } void print_video_header(BITMAPINFOHEADER *h){ printf("======= VIDEO Format ======\n"); printf(" biSize %d\n", h->biSize); printf(" biWidth %d\n", h->biWidth); printf(" biHeight %d\n", h->biHeight); printf(" biPlanes %d\n", h->biPlanes); printf(" biBitCount %d\n", h->biBitCount); printf(" biCompression %d='%.4s'\n", h->biCompression, &h->biCompression); printf(" biSizeImage %d\n", h->biSizeImage); printf("===========================\n"); } FILE* streams[128]; 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%X\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))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]; sprintf(name,"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); } }