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sok hacking

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1176 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
al3x 2001-06-20 19:34:45 +00:00
parent 5306da0b4c
commit 566eaf4fa6
1 changed files with 144 additions and 9 deletions
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151
TOOLS/movinfo.c
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@ -1,18 +1,108 @@
// 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.."); /* 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 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;
@ -20,7 +110,39 @@ void lschunks(FILE *f,int level,unsigned int endpos){
if(atom_size<8) break; // error
printf("%08X: %*s %.4s (%08X) %d\n",pos,level*2,"",&atom_type,atom_type,atom_size);
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 == 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 fps, x, y;
for (i=0; i<atom_size; i++)
fread(&data[i], 1, 1, f);
fps = data[3];
x = data[77];
y = data[81];
printf(" Movie fps: %d\n", fps); /* na ez itt az atbaszas ;( */
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;
@ -35,6 +157,10 @@ void lschunks(FILE *f,int level,unsigned int endpos){
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);
}
}
@ -69,6 +195,9 @@ void lschunks(FILE *f,int level,unsigned int endpos){
int first=read_dword(f);
int spc=read_dword(f);
int sdid=read_dword(f);
if (stream == S_AUDIO)
printf(" chunk from %d: %d Khz (desc: %d)\n", first, spc, sdid);
else
printf(" chunk %d... %d s/c desc: %d\n",first,spc,sdid);
}
}
@ -85,15 +214,15 @@ void lschunks(FILE *f,int level,unsigned int endpos){
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 0x7461646D: // mdat Movie data
case 0x64737473: // stsd Sample description
case 0x6F637473: // stco Chunk offset table
case 0x73747473: // stts Sample time table
@ -114,11 +243,17 @@ void lschunks(FILE *f,int level,unsigned int endpos){
}
}
int main(int argc,char* argv[]){
int pos;
FILE *f=fopen(argc>1?argv[1]:"Akira.mov","rb");
if(!f) return 1;
int main(int argc,char* argv[])
{
FILE *f;
lschunks(f,0,0);
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);
}