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mpv/TOOLS/asfinfo.c

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#define SAVE_STREAMS
// simple ASF header display program by A'rpi/ESP-team
// .asf fileformat docs from http://divx.euro.ru
#include <stdio.h>
#include <stdlib.h>
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;
static 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;
}
static 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: %ld\n", h->nSamplesPerSec);
printf("avg byte/sec: %ld\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");
}
static void print_video_header(BITMAPINFOHEADER *h){
printf("======= VIDEO Format ======\n");
printf(" biSize %ld\n", h->biSize);
printf(" biWidth %ld\n", h->biWidth);
printf(" biHeight %ld\n", h->biHeight);
printf(" biPlanes %d\n", h->biPlanes);
printf(" biBitCount %d\n", h->biBitCount);
printf(" biCompression %ld='%.4s'\n", h->biCompression, &h->biCompression);
printf(" biSizeImage %ld\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%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);
}
return 0;
}
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