mirror of https://github.com/mpv-player/mpv
256 lines
9.0 KiB
C
256 lines
9.0 KiB
C
#define SAVE_STREAMS
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// simple ASF header display program by A'rpi/ESP-team
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// .asf fileformat docs from http://divx.euro.ru
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#include <stdio.h>
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#include <stdlib.h>
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typedef struct __attribute__((packed))
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{
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long biSize; // sizeof(BITMAPINFOHEADER)
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long biWidth;
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long biHeight;
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short biPlanes; // unused
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short biBitCount;
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long biCompression; // fourcc of image
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long biSizeImage; // size of image. For uncompressed images
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// ( biCompression 0 or 3 ) can be zero.
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long biXPelsPerMeter; // unused
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long biYPelsPerMeter; // unused
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long biClrUsed; // valid only for palettized images.
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// Number of colors in palette.
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long biClrImportant;
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} BITMAPINFOHEADER;
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typedef struct
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{
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short wFormatTag; // value that identifies compression format
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short nChannels;
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long nSamplesPerSec;
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long nAvgBytesPerSec;
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short nBlockAlign; // size of a data sample
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short wBitsPerSample;
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short cbSize; // size of format-specific data
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} WAVEFORMATEX;
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typedef struct __attribute__((packed)) {
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unsigned char guid[16];
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unsigned long long size;
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} ASF_obj_header_t;
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typedef struct __attribute__((packed)) {
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ASF_obj_header_t objh;
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unsigned int cno; // number of subchunks
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unsigned char v1; // unknown (0x01)
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unsigned char v2; // unknown (0x02)
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} ASF_header_t;
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typedef struct __attribute__((packed)) {
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unsigned char client[16]; // Client GUID
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unsigned long long file_size;
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unsigned long long creat_time; //File creation time FILETIME 8
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unsigned long long packets; //Number of packets UINT64 8
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unsigned long long end_timestamp; //Timestamp of the end position UINT64 8
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unsigned long long duration; //Duration of the playback UINT64 8
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unsigned long start_timestamp; //Timestamp of the start position UINT32 4
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unsigned long unk1; //Unknown, maybe reserved ( usually contains 0 ) UINT32 4
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unsigned long flags; //Unknown, maybe flags ( usually contains 2 ) UINT32 4
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unsigned long packetsize; //Size of packet, in bytes UINT32 4
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unsigned long packetsize2; //Size of packet ( confirm ) UINT32 4
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unsigned long frame_size; //Size of uncompressed video frame UINT32 4
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} ASF_file_header_t;
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typedef struct __attribute__((packed)) {
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unsigned char type[16]; // Stream type (audio/video) GUID 16
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unsigned char concealment[16]; // Audio error concealment type GUID 16
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unsigned long long unk1; // Unknown, maybe reserved ( usually contains 0 ) UINT64 8
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unsigned long type_size; //Total size of type-specific data UINT32 4
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unsigned long stream_size; //Size of stream-specific data UINT32 4
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unsigned short stream_no; //Stream number UINT16 2
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unsigned long unk2; //Unknown UINT32 4
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} ASF_stream_header_t;
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typedef struct __attribute__((packed)) {
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unsigned char streamno;
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unsigned char seq;
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unsigned long x;
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unsigned char flag;
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} ASF_segmhdr_t;
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ASF_header_t asfh;
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ASF_obj_header_t objh;
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ASF_file_header_t fileh;
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ASF_stream_header_t streamh;
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unsigned char buffer[8192];
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int i;
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char* chunk_type(unsigned char* guid){
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switch(*((unsigned int*)guid)){
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case 0xF8699E40: return "guid_audio_stream";
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case 0xBC19EFC0: return "guid_video_stream";
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case 0x49f1a440: return "guid_audio_conceal_none";
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case 0xbfc3cd50: return "guid_audio_conceal_interleave";
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case 0x75B22630: return "guid_header";
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case 0x75b22636: return "guid_data_chunk";
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case 0x33000890: return "guid_index_chunk";
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case 0xB7DC0791: return "guid_stream_header";
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case 0xD6E229D1: return "guid_header_2_0";
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case 0x8CABDCA1: return "guid_file_header";
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}
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return NULL;
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}
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void print_wave_header(WAVEFORMATEX *h){
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printf("======= WAVE Format =======\n");
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printf("Format Tag: %d (0x%X)\n",h->wFormatTag,h->wFormatTag);
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printf("Channels: %d\n",h->nChannels);
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printf("Samplerate: %d\n",h->nSamplesPerSec);
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printf("avg byte/sec: %d\n",h->nAvgBytesPerSec);
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printf("Block align: %d\n",h->nBlockAlign);
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printf("bits/sample: %d\n",h->wBitsPerSample);
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printf("cbSize: %d\n",h->cbSize);
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switch(h->wFormatTag){
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case 0x01: printf("Audio in PCM format\n");break;
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case 0x50: printf("Audio in MPEG Layer 1/2 format\n");break;
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case 0x55: printf("Audio in MPEG Layer-3 format\n");break; // ACM
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case 0x02: printf("Audio in MS ADPCM format\n");break; // ACM
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case 0x11: printf("Audio in IMA ADPCM format\n");break; // ACM
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case 0x31:
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case 0x32: printf("Audio in MS GSM 6.10 format\n");break; // ACM
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case 0x160:
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case 0x161: printf("Audio in DivX WMA format\n");break; // ACM
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default: printf("Audio in UNKNOWN (id=0x%X) format\n",h->wFormatTag);
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}
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printf("===========================\n");
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}
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void print_video_header(BITMAPINFOHEADER *h){
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printf("======= VIDEO Format ======\n");
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printf(" biSize %d\n", h->biSize);
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printf(" biWidth %d\n", h->biWidth);
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printf(" biHeight %d\n", h->biHeight);
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printf(" biPlanes %d\n", h->biPlanes);
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printf(" biBitCount %d\n", h->biBitCount);
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printf(" biCompression %d='%.4s'\n", h->biCompression, &h->biCompression);
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printf(" biSizeImage %d\n", h->biSizeImage);
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printf("===========================\n");
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}
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FILE* streams[128];
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int main(int argc,char* argv[]){
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FILE *f=fopen(argc>1?argv[1]:"Alice Deejay - Back In My Life.asf","rb");
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if(!f){ printf("file not found\n");exit(1);}
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//printf("sizeof=%d\n",sizeof(objh));
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//printf("sizeof=%d\n",sizeof(asfh));
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fread(&asfh,sizeof(asfh),1,f); // header obj
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//for(i=0;i<16;i++) printf("%02X ",asfh.objh.guid[i]);
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printf("[%s] %d (subchunks: %d)\n",chunk_type(asfh.objh.guid),(int) asfh.objh.size,asfh.cno);
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while(fread(&objh,sizeof(objh),1,f)>0){
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int pos=ftell(f);
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// for(i=0;i<16;i++) printf("%02X ",objh.guid[i]);
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printf("0x%08X [%s] %d\n",pos-sizeof(objh), chunk_type(objh.guid),(int) objh.size);
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switch(*((unsigned int*)&objh.guid)){
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case 0xB7DC0791: // guid_stream_header
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fread(&streamh,sizeof(streamh),1,f);
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printf("stream type: %s\n",chunk_type(streamh.type));
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printf("stream concealment: %s\n",chunk_type(streamh.concealment));
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printf("type: %d bytes, stream: %d bytes ID: %d\n",(int)streamh.type_size,(int)streamh.stream_size,(int)streamh.stream_no);
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printf("FILEPOS=0x%X\n",ftell(f));
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// type-specific data:
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fread(buffer,streamh.type_size,1,f);
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switch(*((unsigned int*)&streamh.type)){
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case 0xF8699E40: // guid_audio_stream
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print_wave_header((WAVEFORMATEX*)buffer);
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break;
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case 0xBC19EFC0: // guid_video_stream
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print_video_header((BITMAPINFOHEADER*)&buffer[4+4+1+2]);
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break;
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}
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// stream-specific data:
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fread(buffer,streamh.stream_size,1,f);
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break;
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// case 0xD6E229D1: return "guid_header_2_0";
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case 0x8CABDCA1: // guid_file_header
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fread(&fileh,sizeof(fileh),1,f);
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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);
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break;
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case 0x75b22636: // guid_data_chunk
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{ int endp=pos+objh.size-sizeof(objh);
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unsigned char* packet=malloc((int)fileh.packetsize);
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int fpos;
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fseek(f,26,SEEK_CUR);
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while((fpos=ftell(f))<endp){
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fread(packet,(int)fileh.packetsize,1,f);
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if(packet[0]==0x82){
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unsigned char flags=packet[3];
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unsigned char* p=&packet[5];
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unsigned long time;
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unsigned short duration;
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int segs=1;
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int seg;
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int padding=0;
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if(flags&8){
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padding=p[0];++p;
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} else
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if(flags&16){
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padding=p[0]|(p[1]<<8);p+=2;
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}
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time=*((unsigned long*)p);p+=4;
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duration=*((unsigned short*)p);p+=2;
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if(flags&1){
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segs=p[0]-0x80;++p;
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}
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printf("%08X: flag=%02X segs=%d pad=%d time=%d dur=%d\n",
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fpos,flags,segs,padding,time,duration);
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for(seg=0;seg<segs;seg++){
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ASF_segmhdr_t* sh=(ASF_segmhdr_t*)p;
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int len=0;
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p+=sizeof(ASF_segmhdr_t);
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if(sh->flag&8) p+=8;// else
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if(sh->flag&1) ++p;
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if(flags&1){
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len=*((unsigned short*)p);p+=2;
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}
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printf(" seg #%d: streamno=%d seq=%d flag=%02X len=%d\n",seg,sh->streamno&0x7F,sh->seq,sh->flag,len);
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#ifdef SAVE_STREAMS
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if(!streams[sh->streamno&0x7F]){
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char name[256];
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sprintf(name,"stream%02X.dat",sh->streamno&0x7F);
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streams[sh->streamno&0x7F]=fopen(name,"wb");
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}
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fwrite(p,len,1,streams[sh->streamno&0x7F]);
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#endif
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p+=len;
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}
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} else
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printf("%08X: UNKNOWN %02X %02X %02X %02X %02X...\n",fpos,packet[0],packet[1],packet[2],packet[3],packet[4]);
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}
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}
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break;
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// case 0x33000890: return "guid_index_chunk";
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}
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fseek(f,pos+objh.size-sizeof(objh),SEEK_SET);
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}
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}
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