mirror of
https://github.com/mpv-player/mpv
synced 2024-12-27 01:22:30 +00:00
803362ea91
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@6909 b3059339-0415-0410-9bf9-f77b7e298cf2
340 lines
8.6 KiB
C
340 lines
8.6 KiB
C
// show QuickTime .mov file structure (C) 2001. by A'rpi/ESP-team
|
|
// various hacks by alex@naxine.org
|
|
|
|
/*
|
|
Blocks: 4bytes atom_size
|
|
4bytes atom_type (name)
|
|
...
|
|
|
|
By older files, mdat is at the beginning, and moov follows it later,
|
|
by newer files, moov is at the begininng.
|
|
|
|
Fontosabb typeok:
|
|
|
|
trak: track: ezeken belul van egy-egy stream (video/audio)
|
|
tkhd: track header: fps (video esten picture size is itt van)
|
|
vmhd: video media handler (video stream informaciok)
|
|
smhd: sound media handler (audio stream informaciok)
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#undef NO_SPECIAL
|
|
|
|
char *atom2human_type(int type)
|
|
{
|
|
switch (type)
|
|
{
|
|
case 0x766F6F6D: return ("Information sections"); /* moov */
|
|
case 0x6468766D: return ("Movie header"); /* mvhd */
|
|
case 0x6169646D: return ("Media stream"); /* mdia */
|
|
case 0x64686D76: return ("Video media header"); /* vmhd */
|
|
case 0x64686D73: return ("Sound media header"); /* smhd */
|
|
case 0x6468646D: return ("Media header"); /* mdhd */
|
|
case 0x666E696D: return ("Media information"); /* minf */
|
|
case 0x726C6468: return ("Handler reference"); /* hdlr */
|
|
case 0x6B617274: return ("New track (stream)"); /* trak */
|
|
case 0x75716D72: return ("rmqu");
|
|
case 0x65657266: return ("free");
|
|
case 0x64686B74: return ("Track header"); /* tkhd */
|
|
case 0x61746475: return ("User data"); /* udta */
|
|
case 0x7461646D: return ("Movie data"); /* mdat */
|
|
case 0x6C627473: return ("Sample information table"); /* stbl */
|
|
case 0x64737473: return ("Sample description"); /* stsd */
|
|
case 0x6F637473: return ("Chunk offset table"); /* stco */
|
|
case 0x73747473: return ("Sample time table"); /* stts */
|
|
case 0x63737473: return ("Sample->Chunk mapping table"); /* stsc */
|
|
case 0x7A737473: return ("Sample size table"); /* stsz */
|
|
}
|
|
return("unknown");
|
|
}
|
|
|
|
#define S_NONE 0
|
|
#define S_AUDIO 1
|
|
#define S_VIDEO 2
|
|
int stream = S_NONE;
|
|
int v_stream = 0;
|
|
int a_stream = 0;
|
|
|
|
unsigned int read_dword(FILE *f){
|
|
unsigned char atom_size_b[4];
|
|
if(fread(&atom_size_b,4,1,f)<=0) return -1;
|
|
return (atom_size_b[0]<<24)|(atom_size_b[1]<<16)|(atom_size_b[2]<<8)|atom_size_b[3];
|
|
}
|
|
|
|
void *video_stream_info(FILE *f, int len)
|
|
{
|
|
int orig_pos = ftell(f);
|
|
unsigned char data[len-8];
|
|
int i;
|
|
char codec[len-8];
|
|
|
|
len -= 8;
|
|
for (i=0; i<len; i++)
|
|
fread(&data[i], 1, 1, f);
|
|
|
|
// strncpy(codec, &data[43], len-43);
|
|
// printf(" [codec: %s]\n", &codec);
|
|
fseek(f,orig_pos,SEEK_SET);
|
|
}
|
|
|
|
void *audio_stream_info(FILE *f, int len)
|
|
{
|
|
int orig_pos = ftell(f);
|
|
unsigned char data[len-8];
|
|
int i;
|
|
|
|
len -= 8;
|
|
for (i=0; i<len; i++)
|
|
fread(&data[i], 1, 1, f);
|
|
|
|
printf(" [%d bit", data[19]);
|
|
if (data[17] == 1)
|
|
printf(" mono");
|
|
else
|
|
printf(" %d channels", data[17]);
|
|
printf("]\n");
|
|
fseek(f,orig_pos,SEEK_SET);
|
|
}
|
|
|
|
void *userdata_info(FILE *f, int len, int pos, int level)
|
|
{
|
|
int orig_pos = pos; /*ftell(f);*/
|
|
unsigned char data[len-8];
|
|
int i;
|
|
unsigned int atom_size = 1;
|
|
unsigned int atom_type;
|
|
|
|
// printf("userdata @ %d:%d (%d)\n", pos, pos+len, len);
|
|
|
|
// fseek(f, pos+3, SEEK_SET);
|
|
|
|
while (atom_size != 0)
|
|
{
|
|
atom_size=read_dword(f);// if(fread(&atom_size_b,4,1,f)<=0) break;
|
|
if(fread(&atom_type,4,1,f)<=0) break;
|
|
|
|
if(atom_size<8) break; // error
|
|
|
|
// printf("%08X: %*s %.4s (%08X) %05d (begin: %08X)\n",pos,level*2,"",
|
|
// &atom_type,atom_type,atom_size,pos+8);
|
|
|
|
switch(atom_type)
|
|
{
|
|
case 0x797063A9: /* cpy (copyright) */
|
|
{
|
|
char *data = malloc(atom_size-8);
|
|
|
|
fseek(f, pos+6, SEEK_SET);
|
|
fread(data, atom_size-8, 1, f);
|
|
printf(" Copyright: %s\n", data);
|
|
free(data);
|
|
}
|
|
break;
|
|
case 0x666E69A9: /* inf (information) */
|
|
{
|
|
char data[atom_size-8];
|
|
|
|
fread(&data, 1, atom_size-8, f);
|
|
printf(" Owner: %s\n", &data);
|
|
}
|
|
break;
|
|
case 0x6D616EA9: /* nam (name) */
|
|
{
|
|
char data[atom_size-8];
|
|
|
|
fread(&data, 1, atom_size-8, f);
|
|
printf(" Name: %s\n", &data);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
fseek(f,orig_pos,SEEK_SET);
|
|
}
|
|
|
|
int time_scale = 0;
|
|
|
|
void lschunks(FILE *f,int level,unsigned int endpos){
|
|
unsigned int atom_size;
|
|
unsigned int atom_type;
|
|
int pos;
|
|
|
|
while(endpos==0 || ftell(f)<endpos){
|
|
pos=ftell(f);
|
|
atom_size=read_dword(f);// if(fread(&atom_size_b,4,1,f)<=0) break;
|
|
if(fread(&atom_type,4,1,f)<=0) break;
|
|
|
|
if(atom_size<8) break; // error
|
|
|
|
printf("%08X: %*s %.4s (%08X) %05d [%s] (begin: %08X)\n",pos,level*2,"",&atom_type,atom_type,atom_size,
|
|
atom2human_type(atom_type), pos+8); // 8: atom_size fields (4) + atom_type fields (4)
|
|
|
|
#ifndef NO_SPECIAL
|
|
// if (atom_type == 0x61746475)
|
|
// userdata_info(f, atom_size, pos, level);
|
|
|
|
if (atom_type == 0x6468646D)
|
|
{
|
|
char data[4];
|
|
|
|
fread(&data, 1, 1, f); // char
|
|
printf("mdhd version %d\n", data[0]);
|
|
fread(&data, 3, 1, f); // int24
|
|
fread(&data, 4, 1, f); // int32
|
|
fread(&data, 4, 1, f); // int32
|
|
fread(&data, 4, 1, f); // int32
|
|
time_scale = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3];
|
|
printf("timescale: %d\n", time_scale);
|
|
fread(&data, 4, 1, f); // int32
|
|
fread(&data, 2, 1, f); // int16
|
|
fread(&data, 2, 1, f); // int16
|
|
}
|
|
|
|
if (atom_type == 0x64686D76)
|
|
{
|
|
stream = S_VIDEO;
|
|
printf(" Found VIDEO Stream #%d\n", v_stream++);
|
|
}
|
|
|
|
if (atom_type == 0x64686D73)
|
|
{
|
|
stream = S_AUDIO;
|
|
printf(" Found AUDIO Stream #%d\n", a_stream++);
|
|
}
|
|
|
|
if (atom_type == 0x64686B74) // tkhd - track header
|
|
{
|
|
int i;
|
|
unsigned char data[atom_size];
|
|
int x, y;
|
|
|
|
for (i=0; i<atom_size; i++)
|
|
fread(&data[i], 1, 1, f);
|
|
|
|
x = data[77];
|
|
y = data[81];
|
|
printf(" Flags: %d\n", data[3]);
|
|
printf(" Picture size: %dx%d\n", x, y);
|
|
if (x == 0 && y == 0)
|
|
printf(" Possible audio stream!\n");
|
|
}
|
|
|
|
if(atom_type==0x64737473) { // stsd
|
|
unsigned int tmp;
|
|
unsigned int count;
|
|
int i;
|
|
fread(&tmp,4,1,f);
|
|
count=read_dword(f);// fread(&count,4,1,f);
|
|
printf("desc count = %d\n",count);
|
|
for(i=0;i<count;i++){
|
|
unsigned int len;
|
|
unsigned int format;
|
|
len=read_dword(f); // fread(&len,4,1,f);
|
|
fread(&format,4,1,f);
|
|
printf(" desc #%d: %.4s (%d)\n",i+1,&format,len);
|
|
if (stream == S_VIDEO)
|
|
video_stream_info(f, len);
|
|
if (stream == S_AUDIO)
|
|
audio_stream_info(f, len);
|
|
fseek(f,len-8,SEEK_CUR);
|
|
}
|
|
}
|
|
|
|
if(atom_type==0x6F637473) { // stco
|
|
int len,i;
|
|
read_dword(f);
|
|
len=read_dword(f);
|
|
printf("Chunk table size :%d\n",len);
|
|
for(i=0;i<len;i++) printf(" chunk #%d: 0x%X\n",i+1,read_dword(f));
|
|
}
|
|
|
|
|
|
if(atom_type==0x73747473) { // stts
|
|
int len,i;
|
|
read_dword(f);
|
|
len=read_dword(f);
|
|
printf("T->S table size :%d\n",len);
|
|
for(i=0;i<len;i++){
|
|
int num=read_dword(f);
|
|
int dur=read_dword(f);
|
|
printf("%5d samples: %d duration", num, dur);
|
|
if (stream == S_AUDIO)
|
|
printf("(rate: %f Hz)\n", (float)time_scale/dur);
|
|
else
|
|
printf("(fps: %f)\n", (float)time_scale/dur);
|
|
}
|
|
}
|
|
|
|
if(atom_type==0x63737473) { // stsc
|
|
int len,i;
|
|
read_dword(f);
|
|
len=read_dword(f);
|
|
printf("S->C table size :%d\n",len);
|
|
for(i=0;i<len;i++){
|
|
int first=read_dword(f);
|
|
int spc=read_dword(f);
|
|
int sdid=read_dword(f);
|
|
printf(" chunk %d... %d s/c desc: %d\n",first,spc,sdid);
|
|
}
|
|
}
|
|
|
|
if(atom_type==0x7A737473) { // stsz
|
|
int len,i,ss;
|
|
read_dword(f);
|
|
ss=read_dword(f);
|
|
len=read_dword(f);
|
|
printf("Sample size table len: %d\n",len);
|
|
if(ss){
|
|
printf(" common sample size: %d bytes\n",ss);
|
|
} else {
|
|
for(i=0;i<len;i++) printf(" sample #%d: %d bytes\n",i+1,read_dword(f));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if 1
|
|
switch(atom_type){
|
|
case 0x7461646D: // mdat Movie data
|
|
case 0x75716D72: // rmqu
|
|
case 0x65657266: // free JUNK
|
|
case 0x64686B74: // tkhd Track header
|
|
case 0x61746475: // udta User data
|
|
case 0x64737473: // stsd Sample description
|
|
case 0x6F637473: // stco Chunk offset table
|
|
case 0x73747473: // stts Sample time table
|
|
case 0x63737473: // stsc Sample->Chunk mapping table
|
|
case 0x7A737473: // stsz Sample size table
|
|
case 0x746f6e70: // pnot
|
|
case 0x54434950: // PICT
|
|
case 0x70797466:
|
|
break;
|
|
default: lschunks(f,level+1,pos+atom_size);
|
|
}
|
|
#else
|
|
switch(atom_type){
|
|
case 0x766F6F6D: // moov
|
|
case 0x61726D72: // rmra
|
|
case 0x61646D72: // rmda
|
|
lschunks(f,level+1,pos+atom_size);
|
|
}
|
|
#endif
|
|
fseek(f,pos+atom_size,SEEK_SET);
|
|
}
|
|
}
|
|
|
|
int main(int argc,char* argv[])
|
|
{
|
|
FILE *f;
|
|
|
|
if ((f = fopen(argc>1?argv[1]:"Akira.mov","rb")) == NULL)
|
|
return 1;
|
|
|
|
printf("%.8s %.4s (%.8s) %05s [%s]\n\n",
|
|
"position", "atom", "atomtype", "len", "human readable atom name");
|
|
|
|
lschunks(f, 0, 0);
|
|
|
|
printf("\nSummary: streams: %d video/%d audio\n", v_stream, a_stream);
|
|
}
|