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https://github.com/mpv-player/mpv.git
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sok hacking
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1176 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
al3x
parent
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commit
566eaf4fa6
153
TOOLS/movinfo.c
153
TOOLS/movinfo.c
@ -1,18 +1,108 @@
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// show QuickTime .mov file structure (C) 2001. by A'rpi/ESP-team
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// various hacks by alex@naxine.org
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/*
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Blocks: 4bytes atom_size
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4bytes atom_type (name)
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...
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By older files, mdat is at the beginning, and moov follows it later,
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by newer files, moov is at the begininng.
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Fontosabb typeok:
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trak: track: ezeken belul van egy-egy stream (video/audio)
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tkhd: track header: fps (video esten picture size is itt van)
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vmhd: video media handler (video stream informaciok)
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smhd: sound media handler (audio stream informaciok)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#undef NO_SPECIAL
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char *atom2human_type(int type)
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{
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switch (type)
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{
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case 0x766F6F6D: return ("Information sections"); /* moov */
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case 0x6468766D: return ("Movie header"); /* mvhd */
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case 0x6169646D: return ("Media stream"); /* mdia */
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case 0x64686D76: return ("Video media header"); /* vmhd */
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case 0x64686D73: return ("Sound media header"); /* smhd */
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case 0x6468646D: return ("Media header"); /* mdhd */
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case 0x666E696D: return ("Media information"); /* minf */
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case 0x726C6468: return ("Handler.."); /* hdlr */
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case 0x6B617274: return ("New track (stream)"); /* trak */
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case 0x75716D72: return ("rmqu");
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case 0x65657266: return ("free");
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case 0x64686B74: return ("Track header"); /* tkhd */
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case 0x61746475: return ("User data"); /* udta */
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case 0x7461646D: return ("Movie data"); /* mdat */
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case 0x6C627473: return ("Sample information table"); /* stbl */
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case 0x64737473: return ("Sample description"); /* stsd */
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case 0x6F637473: return ("Chunk offset table"); /* stco */
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case 0x73747473: return ("Sample time table"); /* stts */
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case 0x63737473: return ("Sample->Chunk mapping table"); /* stsc */
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case 0x7A737473: return ("Sample size table"); /* stsz */
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}
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return("unknown");
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}
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#define S_NONE 0
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#define S_AUDIO 1
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#define S_VIDEO 2
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int stream = S_NONE;
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int v_stream = 0;
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int a_stream = 0;
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unsigned int read_dword(FILE *f){
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unsigned char atom_size_b[4];
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if(fread(&atom_size_b,4,1,f)<=0) return -1;
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return (atom_size_b[0]<<24)|(atom_size_b[1]<<16)|(atom_size_b[2]<<8)|atom_size_b[3];
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}
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void *video_stream_info(FILE *f, int len)
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{
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int orig_pos = ftell(f);
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unsigned char data[len-8];
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int i;
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char codec[len-8];
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len -= 8;
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for (i=0; i<len; i++)
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fread(&data[i], 1, 1, f);
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strncpy(codec, &data[43], len-43);
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printf(" [codec: %s]\n", &codec);
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fseek(f,orig_pos,SEEK_SET);
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}
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void *audio_stream_info(FILE *f, int len)
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{
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int orig_pos = ftell(f);
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unsigned char data[len-8];
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int i;
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len -= 8;
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for (i=0; i<len; i++)
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fread(&data[i], 1, 1, f);
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printf(" [%d bit", data[19]);
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if (data[17] == 1)
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printf(" mono");
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else
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printf(" %d channels", data[17]);
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printf("]\n");
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fseek(f,orig_pos,SEEK_SET);
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}
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void lschunks(FILE *f,int level,unsigned int endpos){
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unsigned int atom_size;
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unsigned int atom_type;
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int pos;
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while(endpos==0 || ftell(f)<endpos){
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pos=ftell(f);
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atom_size=read_dword(f);// if(fread(&atom_size_b,4,1,f)<=0) break;
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@ -20,7 +110,39 @@ void lschunks(FILE *f,int level,unsigned int endpos){
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if(atom_size<8) break; // error
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printf("%08X: %*s %.4s (%08X) %d\n",pos,level*2,"",&atom_type,atom_type,atom_size);
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printf("%08X: %*s %.4s (%08X) %05d [%s] (begin: %08X)\n",pos,level*2,"",&atom_type,atom_type,atom_size,
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atom2human_type(atom_type), pos+8); // 8: atom_size fields (4) + atom_type fields (4)
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#ifndef NO_SPECIAL
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if (atom_type == 0x64686D76)
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{
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stream = S_VIDEO;
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printf(" Found VIDEO Stream #%d\n", v_stream++);
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}
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if (atom_type == 0x64686D73)
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{
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stream = S_AUDIO;
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printf(" Found AUDIO Stream #%d\n", a_stream++);
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}
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if (atom_type == 0x64686B74) // tkhd - track header
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{
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int i;
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unsigned char data[atom_size];
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int fps, x, y;
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for (i=0; i<atom_size; i++)
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fread(&data[i], 1, 1, f);
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fps = data[3];
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x = data[77];
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y = data[81];
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printf(" Movie fps: %d\n", fps); /* na ez itt az atbaszas ;( */
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printf(" Picture size: %dx%d\n", x, y);
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if (x == 0 && y == 0)
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printf(" Possible audio stream!\n");
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}
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if(atom_type==0x64737473) { // stsd
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unsigned int tmp;
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@ -35,6 +157,10 @@ void lschunks(FILE *f,int level,unsigned int endpos){
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len=read_dword(f); // fread(&len,4,1,f);
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fread(&format,4,1,f);
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printf(" desc #%d: %.4s (%d)\n",i+1,&format,len);
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if (stream == S_VIDEO)
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video_stream_info(f, len);
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if (stream == S_AUDIO)
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audio_stream_info(f, len);
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fseek(f,len-8,SEEK_CUR);
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}
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}
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@ -69,7 +195,10 @@ void lschunks(FILE *f,int level,unsigned int endpos){
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int first=read_dword(f);
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int spc=read_dword(f);
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int sdid=read_dword(f);
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printf(" chunk %d... %d s/c desc: %d\n",first,spc,sdid);
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if (stream == S_AUDIO)
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printf(" chunk from %d: %d Khz (desc: %d)\n", first, spc, sdid);
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else
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printf(" chunk %d... %d s/c desc: %d\n",first,spc,sdid);
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}
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}
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@ -85,15 +214,15 @@ void lschunks(FILE *f,int level,unsigned int endpos){
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for(i=0;i<len;i++) printf(" sample #%d: %d bytes\n",i+1,read_dword(f));
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}
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}
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#endif
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#if 1
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switch(atom_type){
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case 0x7461646D: // mdat Movie data
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case 0x75716D72: // rmqu
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case 0x65657266: // free JUNK
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case 0x64686B74: // tkhd Track header
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case 0x61746475: // udta User data
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case 0x7461646D: // mdat Movie data
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case 0x64737473: // stsd Sample description
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case 0x6F637473: // stco Chunk offset table
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case 0x73747473: // stts Sample time table
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@ -114,11 +243,17 @@ void lschunks(FILE *f,int level,unsigned int endpos){
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}
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}
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int main(int argc,char* argv[]){
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int pos;
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FILE *f=fopen(argc>1?argv[1]:"Akira.mov","rb");
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if(!f) return 1;
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int main(int argc,char* argv[])
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{
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FILE *f;
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if ((f = fopen(argc>1?argv[1]:"Akira.mov","rb")) == NULL)
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return 1;
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lschunks(f,0,0);
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printf("%.8s %.4s (%.8s) %05s [%s]\n\n",
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"position", "atom", "atomtype", "len", "human readable atom name");
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lschunks(f, 0, 0);
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printf("\nSummary: streams: %d video/%d audio\n", v_stream, a_stream);
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}
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