RepoMirrors/mpv
1
0
Fork 0
mirror of https://github.com/mpv-player/mpv synced 2024-12-14 02:45:43 +00:00
Code Issues Releases Wiki Activity
17ee704b7e
mpv/libmpdemux/demux_mov.c
arpi 17ee704b7e 0.1l 
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5252 b3059339-0415-0410-9bf9-f77b7e298cf2
2002-03-21 20:19:00 +00:00

1289 lines
42 KiB
C
Raw Blame History

// QuickTime MOV file parser by A'rpi
// additional work by Atmos
// based on TOOLS/movinfo.c by A'rpi & Al3x
// compressed header support from moov.c of the openquicktime lib.
// References: http://openquicktime.sf.net/, http://www.heroinewarrior.com/
// http://www.geocities.com/SiliconValley/Lakes/2160/fformats/files/mov.pdf
// (above url no longer works, file mirrored somewhere? ::atmos)
// The QuickTime File Format PDF from Apple:
// http://developer.apple.com/techpubs/quicktime/qtdevdocs/PDF/QTFileFormat.pdf
// (Complete list of documentation at http://developer.apple.com/quicktime/)
// MP4-Lib sources from http://mpeg4ip.sf.net/ might be usefull fot .mp4
// aswell as .mov specific stuff.
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "bswap.h"
#include "qtpalette.h"
#ifdef HAVE_ZLIB
#include <zlib.h>
#endif
#include <fcntl.h>
#define BE_16(x) (be2me_16(*(unsigned short *)(x)))
#define BE_32(x) (be2me_32(*(unsigned int *)(x)))
#define char2short(x,y) ((x[y]<<8)|x[y+1])
#define char2int(x,y) ((x[y]<<24)|(x[y+1]<<16)|(x[y+2]<<8)|x[y+3])
typedef struct {
unsigned int pts; // duration
unsigned int size;
off_t pos;
} mov_sample_t;
typedef struct {
unsigned int sample; // number of the first sample in the chunk
unsigned int size; // number of samples in the chunk
int desc; // for multiple codecs mode - not used
off_t pos;
} mov_chunk_t;
typedef struct {
unsigned int first;
unsigned int spc;
unsigned int sdid;
} mov_chunkmap_t;
typedef struct {
unsigned int num;
unsigned int dur;
} mov_durmap_t;
#define MOV_TRAK_UNKNOWN 0
#define MOV_TRAK_VIDEO 1
#define MOV_TRAK_AUDIO 2
#define MOV_TRAK_FLASH 3
#define MOV_TRAK_GENERIC 4
#define MOV_TRAK_CODE 5
typedef struct {
int id;
int type;
off_t pos;
//
int timescale;
unsigned int length;
int samplesize; // 0 = variable
int duration; // 0 = variable
int width,height; // for video
unsigned int fourcc;
//
int tkdata_len; // track data
unsigned char* tkdata;
int stdata_len; // stream data
unsigned char* stdata;
//
int samples_size;
mov_sample_t* samples;
int chunks_size;
mov_chunk_t* chunks;
int chunkmap_size;
mov_chunkmap_t* chunkmap;
int durmap_size;
mov_durmap_t* durmap;
int keyframes_size;
unsigned int* keyframes;
} mov_track_t;
void mov_build_index(mov_track_t* trak){
int i,j,s;
int last=trak->chunks_size;
unsigned int pts=0;
#if 0
if (trak->chunks_size <= 0)
{
mp_msg(MSGT_DEMUX, MSGL_WARN, "No chunk offset table, trying to build one!\n");
trak->chunks_size = trak->samples_size; /* XXX: FIXME ! */
trak->chunks = realloc(trak->chunks, sizeof(mov_chunk_t)*trak->chunks_size);
for (i=0; i < trak->chunks_size; i++)
trak->chunks[i].pos = -1;
}
#endif
mp_msg(MSGT_DEMUX, MSGL_HINT, "MOV track: %d chunks, %d samples\n",trak->chunks_size,trak->samples_size);
mp_msg(MSGT_DEMUX, MSGL_HINT, "pts=%d scale=%d time=%5.3f\n",trak->length,trak->timescale,(float)trak->length/(float)trak->timescale);
// process chunkmap:
i=trak->chunkmap_size;
while(i>0){
--i;
for(j=trak->chunkmap[i].first;j<last;j++){
trak->chunks[j].desc=trak->chunkmap[i].sdid;
trak->chunks[j].size=trak->chunkmap[i].spc;
}
last=trak->chunkmap[i].first;
}
#if 0
for (i=0; i < trak->chunks_size; i++)
{
/* fixup position */
if (trak->chunks[i].pos == -1)
if (i > 0)
trak->chunks[i].pos = trak->chunks[i-1].pos + trak->chunks[i-1].size;
else
trak->chunks[i].pos = 0; /* FIXME: set initial pos */
}
#endif
// calc pts of chunks:
s=0;
for(j=0;j<trak->chunks_size;j++){
trak->chunks[j].sample=s;
s+=trak->chunks[j].size;
}
// workaround for fixed-size video frames (dv and uncompressed)
if(!trak->samples_size && trak->type==MOV_TRAK_VIDEO){
trak->samples_size=s;
trak->samples=malloc(sizeof(mov_sample_t)*s);
for(i=0;i<s;i++)
trak->samples[i].size=trak->samplesize;
trak->samplesize=0;
}
if(!trak->samples_size){
// constant sampesize
if(trak->durmap_size==1 || (trak->durmap_size==2 && trak->durmap[1].num==1)){
trak->duration=trak->durmap[0].dur;
} else mp_msg(MSGT_DEMUX, MSGL_ERR, "*** constant samplesize & variable duration not yet supported! ***\nContact the author if you have such sample file!\n");
return;
}
// calc pts:
s=0;
for(j=0;j<trak->durmap_size;j++){
for(i=0;i<trak->durmap[j].num;i++){
trak->samples[s].pts=pts;
++s;
pts+=trak->durmap[j].dur;
}
}
// calc sample offsets
s=0;
for(j=0;j<trak->chunks_size;j++){
off_t pos=trak->chunks[j].pos;
for(i=0;i<trak->chunks[j].size;i++){
trak->samples[s].pos=pos;
mp_msg(MSGT_DEMUX, MSGL_DBG3, "Sample %5d: pts=%8d off=0x%08X size=%d\n",s,
trak->samples[s].pts,
(int)trak->samples[s].pos,
trak->samples[s].size);
pos+=trak->samples[s].size;
++s;
}
}
}
#define MOV_MAX_TRACKS 256
typedef struct {
off_t moov_start;
off_t moov_end;
off_t mdat_start;
off_t mdat_end;
int track_db;
mov_track_t* tracks[MOV_MAX_TRACKS];
} mov_priv_t;
#define MOV_FOURCC(a,b,c,d) ((a<<24)|(b<<16)|(c<<8)|(d))
int mov_check_file(demuxer_t* demuxer){
int flags=0;
int no=0;
mov_priv_t* priv=malloc(sizeof(mov_priv_t));
mp_msg(MSGT_DEMUX,MSGL_V,"Checking for MOV\n");
memset(priv,0,sizeof(mov_priv_t));
demuxer->priv=priv;
while(1){
int skipped=8;
off_t len=stream_read_dword(demuxer->stream);
unsigned int id=stream_read_dword(demuxer->stream);
if(stream_eof(demuxer->stream)) break; // EOF
if (len == 1) /* real size is 64bits - cjb */
{
#ifndef _LARGEFILE_SOURCE
if (stream_read_dword(demuxer->stream) != 0)
mp_msg(MSGT_DEMUX, MSGL_WARN, "64bit file, but you've compiled MPlayer without LARGEFILE support!\n");
len = stream_read_dword(demuxer->stream);
#else
len = stream_read_qword(demuxer->stream);
#endif
skipped += 8;
}
#if 0
else if (len == 0) /* deleted chunk */
{
/* XXX: CJB! is this right? - alex */
goto skip_chunk;
}
#endif
else if(len<8) break; // invalid chunk
switch(id){
case MOV_FOURCC('f','t','y','p'):
// skip over the file type chunk
// Here are my guesses on it's format (atmos):
// char[4] majorBrand (eg. 'isom')
// int minorVersion (eg. 0x00000000)
// char[4] mediaType(?) (eg. 'mp41')
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: Skipping unsupported Filetype chunk (len: %d)!\n",
len);
break;
case MOV_FOURCC('m','o','o','v'):
// case MOV_FOURCC('c','m','o','v'):
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: Movie header found!\n");
priv->moov_start=(off_t)stream_tell(demuxer->stream);
priv->moov_end=(off_t)priv->moov_start+len-skipped;
mp_msg(MSGT_DEMUX,MSGL_DBG2,"MOV: Movie header: start: %x end: %x\n",
priv->moov_start, priv->moov_end);
flags|=1;
break;
case MOV_FOURCC('m','d','a','t'):
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: Movie DATA found!\n");
priv->mdat_start=stream_tell(demuxer->stream);
priv->mdat_end=priv->mdat_start+len-skipped;
mp_msg(MSGT_DEMUX,MSGL_DBG2,"MOV: Movie data: start: %x end: %x\n",
priv->mdat_start, priv->mdat_end);
flags|=2;
break;
case MOV_FOURCC('f','r','e','e'):
case MOV_FOURCC('s','k','i','p'):
case MOV_FOURCC('w','i','d','e'):
case MOV_FOURCC('j','u','n','k'):
mp_msg(MSGT_DEMUX,MSGL_DBG2,"MOV: free space (len: %d)\n", len);
/* unused, if you edit a mov, you can use space provided by free atoms (redefining it) */
break;
default:
if(no==0) return 0; // first chunk is bad!
id = be2me_32(id);
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: unknown chunk: %.4s %d\n",&id,(int)len);
}
skip_chunk:
if(!stream_skip(demuxer->stream,len-skipped)) break;
++no;
}
if(flags==1)
mp_msg(MSGT_DEMUX,MSGL_WARN,"MOV: missing data (mdat) chunk! Maybe broken file...\n");
else if(flags==2)
mp_msg(MSGT_DEMUX,MSGL_WARN,"MOV: missing header (moov/cmov) chunk! Maybe broken file...\n");
return (flags==3);
}
static void lschunks(demuxer_t* demuxer,int level,off_t endpos,mov_track_t* trak){
mov_priv_t* priv=demuxer->priv;
// printf("lschunks (level=%d,endpos=%x)\n", level, endpos);
while(1){
off_t pos;
off_t len;
unsigned int id;
//
pos=stream_tell(demuxer->stream);
// printf("stream_tell==%d\n",pos);
if(pos>=endpos) return; // END
len=stream_read_dword(demuxer->stream);
// printf("len==%d\n",len);
if(len<8) return; // error
len-=8;
id=stream_read_dword(demuxer->stream);
//
mp_msg(MSGT_DEMUX,MSGL_DBG2,"lschunks %.4s %d\n",&id,(int)len);
//
if(trak){
switch(id){
case MOV_FOURCC('m','d','a','t'): {
mp_msg(MSGT_DEMUX,MSGL_WARN,"Hmm, strange MOV, parsing mdat in lschunks?\n");
return;
}
case MOV_FOURCC('f','r','e','e'):
case MOV_FOURCC('u','d','t','a'):
/* here not supported :p */
break;
case MOV_FOURCC('t','k','h','d'): {
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sTrack header!\n",level,"");
// read codec data
trak->tkdata_len=len;
trak->tkdata=malloc(trak->tkdata_len);
stream_read(demuxer->stream,trak->tkdata,trak->tkdata_len);
break;
}
case MOV_FOURCC('m','d','h','d'): {
unsigned int tmp;
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sMedia header!\n",level,"");
#if 0
tmp=stream_read_dword(demuxer->stream);
printf("dword1: 0x%08X (%d)\n",tmp,tmp);
tmp=stream_read_dword(demuxer->stream);
printf("dword2: 0x%08X (%d)\n",tmp,tmp);
tmp=stream_read_dword(demuxer->stream);
printf("dword3: 0x%08X (%d)\n",tmp,tmp);
tmp=stream_read_dword(demuxer->stream);
printf("dword4: 0x%08X (%d)\n",tmp,tmp);
tmp=stream_read_dword(demuxer->stream);
printf("dword5: 0x%08X (%d)\n",tmp,tmp);
tmp=stream_read_dword(demuxer->stream);
printf("dword6: 0x%08X (%d)\n",tmp,tmp);
#endif
stream_skip(demuxer->stream,12);
// read timescale
trak->timescale=stream_read_dword(demuxer->stream);
// read length
trak->length=stream_read_dword(demuxer->stream);
break;
}
case MOV_FOURCC('v','m','h','d'): {
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sVideo header!\n",level,"");
trak->type=MOV_TRAK_VIDEO;
// read video data
break;
}
case MOV_FOURCC('s','m','h','d'): {
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sSound header!\n",level,"");
trak->type=MOV_TRAK_AUDIO;
// read audio data
break;
}
case MOV_FOURCC('g','m','h','d'): {
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sGeneric header!\n",level,"");
trak->type=MOV_TRAK_GENERIC;
break;
}
case MOV_FOURCC('n','m','h','d'): {
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sGeneric header!\n",level,"");
trak->type=MOV_TRAK_GENERIC;
break;
}
case MOV_FOURCC('s','t','s','d'): {
int i=stream_read_dword(demuxer->stream); // temp!
int count=stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sDescription list! (cnt:%d)\n",level,"",count);
for(i=0;i<count;i++){
off_t pos=stream_tell(demuxer->stream);
off_t len=stream_read_dword(demuxer->stream);
unsigned int fourcc=stream_read_dword_le(demuxer->stream);
if(len<8) break; // error
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*s desc #%d: %.4s (%d bytes)\n",level,"",i,&fourcc,len-16);
if(!i){
trak->fourcc=fourcc;
// read type specific (audio/video/time/text etc) header
// NOTE: trak type is not yet known at this point :(((
trak->stdata_len=len-8;
trak->stdata=malloc(trak->stdata_len);
stream_read(demuxer->stream,trak->stdata,trak->stdata_len);
}
if(fourcc!=trak->fourcc && i)
mp_msg(MSGT_DEMUX,MSGL_WARN,MSGTR_MOVvariableFourCC);
if(!stream_seek(demuxer->stream,pos+len)) break;
}
break;
}
case MOV_FOURCC('s','t','t','s'): {
int temp=stream_read_dword(demuxer->stream);
int len=stream_read_dword(demuxer->stream);
int i;
int x=0;
unsigned int pts=0;
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sSample duration table! (%d blocks)\n",level,"",len);
trak->durmap=malloc(sizeof(mov_durmap_t)*len);
memset(trak->durmap,0,sizeof(mov_durmap_t)*len);
trak->durmap_size=len;
for(i=0;i<len;i++){
trak->durmap[i].num=stream_read_dword(demuxer->stream);
trak->durmap[i].dur=stream_read_dword(demuxer->stream);
pts+=trak->durmap[i].num*trak->durmap[i].dur;
if(i==0 && trak->type == MOV_TRAK_VIDEO)
{
sh_video_t* sh=get_sh_video(demuxer,priv->track_db);
if (sh && !sh->fps)
sh->fps = trak->timescale/trak->durmap[i].dur;
/* initial fps */
}
}
if(trak->length!=pts) mp_msg(MSGT_DEMUX, MSGL_WARN, "Warning! pts=%d length=%d\n",pts,trak->length);
break;
}
case MOV_FOURCC('s','t','s','c'): {
int temp=stream_read_dword(demuxer->stream);
int len=stream_read_dword(demuxer->stream);
int ver = (temp << 24);
int flags = (temp << 16)|(temp<<8)|temp;
int i;
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sSample->Chunk mapping table! (%d blocks) (ver:%d,flags:%ld)\n",
level,"",len,ver,flags);
// read data:
trak->chunkmap_size=len;
trak->chunkmap=malloc(sizeof(mov_chunkmap_t)*len);
for(i=0;i<len;i++){
trak->chunkmap[i].first=stream_read_dword(demuxer->stream)-1;
trak->chunkmap[i].spc=stream_read_dword(demuxer->stream);
trak->chunkmap[i].sdid=stream_read_dword(demuxer->stream);
}
break;
}
case MOV_FOURCC('s','t','s','z'): {
int temp=stream_read_dword(demuxer->stream);
int ss=stream_read_dword(demuxer->stream);
int ver = (temp << 24);
int flags = (temp << 16)|(temp<<8)|temp;
int entries=stream_read_dword(demuxer->stream);
int i;
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sSample size table! (entries=%d ss=%d) (ver:%d,flags:%ld)\n",
level,"",entries,ss,ver,flags);
trak->samplesize=ss;
if (!ss) {
// variable samplesize
trak->samples=realloc(trak->samples,sizeof(mov_sample_t)*entries);
trak->samples_size=entries;
for(i=0;i<entries;i++)
trak->samples[i].size=stream_read_dword(demuxer->stream);
}
break;
}
case MOV_FOURCC('s','t','c','o'): {
int temp=stream_read_dword(demuxer->stream);
int len=stream_read_dword(demuxer->stream);
int i;
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sChunk offset table! (%d chunks)\n",level,"",len);
// extend array if needed:
if(len>trak->chunks_size){
trak->chunks=realloc(trak->chunks,sizeof(mov_chunk_t)*len);
trak->chunks_size=len;
}
// read elements:
for(i=0;i<len;i++) trak->chunks[i].pos=stream_read_dword(demuxer->stream);
break;
}
case MOV_FOURCC('c','o','6','4'): {
int temp=stream_read_dword(demuxer->stream);
int len=stream_read_dword(demuxer->stream);
int i;
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*s64bit chunk offset table! (%d chunks)\n",level,"",len);
// extend array if needed:
if(len>trak->chunks_size){
trak->chunks=realloc(trak->chunks,sizeof(mov_chunk_t)*len);
trak->chunks_size=len;
}
// read elements:
for(i=0;i<len;i++)
{
#ifndef _LARGEFILE_SOURCE
if (stream_read_dword(demuxer->stream) != 0)
mp_msg(MSGT_DEMUX, MSGL_WARN, "Chunk %d has got 64bit address, but you've MPlayer compiled without LARGEFILE support!\n", i);
trak->chunks[i].pos = stream_read_dword(demuxer->stream);
#else
trak->chunks[i].pos = stream_read_qword(demuxer->stream);
#endif
}
break;
}
case MOV_FOURCC('s','t','s','s'): {
int temp=stream_read_dword(demuxer->stream);
int entries=stream_read_dword(demuxer->stream);
int ver = (temp << 24);
int flags = (temp << 16)|(temp<<8)|temp;
int i;
mp_msg(MSGT_DEMUX, MSGL_V,"MOV: %*sSyncing samples (keyframes) table! (%d entries) (ver:%d,flags:%ld)\n",
level, "",entries, ver, flags);
trak->keyframes_size=entries;
trak->keyframes=malloc(sizeof(unsigned int)*entries);
for (i=0;i<entries;i++)
trak->keyframes[i]=stream_read_dword(demuxer->stream)-1;
// for (i=0;i<entries;i++) printf("%3d: %d\n",i,trak->keyframes[i]);
break;
}
case MOV_FOURCC('m','d','i','a'): {
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sMedia stream!\n",level,"");
lschunks(demuxer,level+1,pos+len,trak);
break;
}
case MOV_FOURCC('m','i','n','f'): {
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sMedia info!\n",level,"");
lschunks(demuxer,level+1,pos+len,trak);
break;
}
case MOV_FOURCC('s','t','b','l'): {
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sSample info!\n",level,"");
lschunks(demuxer,level+1,pos+len,trak);
break;
}
case MOV_FOURCC('e','d','t','s'): {
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: %*sEdit atom!\n", level, "");
lschunks(demuxer,level+1,pos+len,trak);
break;
}
case MOV_FOURCC('e','l','s','t'): {
int temp=stream_read_dword(demuxer->stream);
int entries=stream_read_dword(demuxer->stream);
int ver = (temp << 24);
int flags = (temp << 16)|(temp<<8)|temp;
int i;
mp_msg(MSGT_DEMUX, MSGL_V,"MOV: %*sEdit list table (%d entries) (ver:%d,flags:%ld)\n",
level, "",entries, ver, flags);
#if 0
for (i=0;i<entries;i++)
{
printf("entry#%d: dur: %ld mtime: %ld mrate: %ld\n",
i, stream_read_dword(demuxer->stream),
stream_read_dword(demuxer->stream),
stream_read_dword(demuxer->stream));
}
#endif
break;
}
case MOV_FOURCC('c','o','d','e'):
{
/* XXX: Implement atom 'code' for FLASH support */
}
default:
id = be2me_32(id);
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: unknown chunk: %.4s %d\n",&id,(int)len);
break;
}//switch(id)
} else { /* not in track */
switch(id) {
case MOV_FOURCC('t','r','a','k'): {
// if(trak) printf("MOV: Warning! trak in trak?\n");
if(priv->track_db>=MOV_MAX_TRACKS){
mp_msg(MSGT_DEMUX,MSGL_WARN,MSGTR_MOVtooManyTrk);
return;
}
trak=malloc(sizeof(mov_track_t));
memset(trak,0,sizeof(mov_track_t));
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: Track #%d:\n",priv->track_db);
trak->id=priv->track_db;
priv->tracks[priv->track_db]=trak;
lschunks(demuxer,level+1,pos+len,trak);
mov_build_index(trak);
switch(trak->type){
case MOV_TRAK_AUDIO: {
#if 0
struct {
int16_t version; // 0 or 1 (version 1 is qt3.0+)
int16_t revision; // 0
int32_t vendor_id; // 0
int16_t channels; // 1 or 2 (Mono/Stereo)
int16_t samplesize; // 8 or 16 (8Bit/16Bit)
int16_t compression_id; // if version 0 then 0
// if version 1 and vbr then -2 else 0
int16_t packet_size; // 0
uint16_t sample_rate; // samplerate (Hz)
// qt3.0+ (version == 1)
uint32_t samples_per_packet; // 0 or num uncompressed samples in a packet
// if 0 below three values are also 0
uint32_t bytes_per_packet; // 0 or num compressed bytes for one channel
uint32_t bytes_per_frame; // 0 or num compressed bytes for all channels
// (channels * bytes_per_packet)
uint32_t bytes_per_sample; // 0 or size of uncompressed sample
// if samples_per_packet and bytes_per_packet are constant (CBR)
// then bytes_per_frame and bytes_per_sample must be 0 (else is VBR)
// ---
// optional additional atom-based fields
// ([int32_t size,int32_t type,some data ],repeat)
} my_stdata;
#endif
sh_audio_t* sh=new_sh_audio(demuxer,priv->track_db);
sh->format=trak->fourcc;
// assumptions for below table: short is 16bit, int is 32bit, intfp is 16bit
// XXX: 32bit fixed point numbers (intfp) are only 2 Byte!
// short values are usually one byte leftpadded by zero
// int values are usually two byte leftpadded by zero
// stdata[]:
// 8 short version
// 10 short revision
// 12 int vendor_id
// 16 short channels
// 18 short samplesize
// 20 short compression_id
// 22 short packet_size (==0)
// 24 intfp sample_rate
// (26 short) unknown (==0)
// ---- qt3.0+
// 28 int samples_per_packet
// 32 int bytes_per_packet
// 36 int bytes_per_frame
// 40 int bytes_per_sample
// there may be additional atoms following at 28 (version 0)
// or 44 (version 1), eg. esds atom of .MP4 files
// esds atom:
// 28 int atom size (bytes of int size, int type and data)
// 32 char[4] atom type (fourc charater code -> esds)
// 62 int compressed datarate (Bits)
sh->samplesize=char2short(trak->stdata,18)/8;
sh->channels=char2short(trak->stdata,16);
/*printf("MOV: timescale: %d samplerate: %d durmap: %d (%d) -> %d (%d)\n",
trak->timescale, char2short(trak->stdata,24), trak->durmap[0].dur,
trak->durmap[0].num, trak->timescale/trak->durmap[0].dur,
char2short(trak->stdata,24)/trak->durmap[0].dur);*/
sh->samplerate=char2short(trak->stdata,24);
if((sh->samplerate < 8000) && trak->durmap) {
switch(char2short(trak->stdata,24)/trak->durmap[0].dur) {
// TODO: add more cases.
case 31:
sh->samplerate = 32000; break;
case 43:
sh->samplerate = 44100; break;
case 47:
sh->samplerate = 48000; break;
default:
mp_msg(MSGT_DEMUX, MSGL_WARN,
"MOV: unable to determine audio samplerate, "
"assuming 44.1kHz (got %d)\n",
char2short(trak->stdata,24)/trak->durmap[0].dur);
sh->samplerate = 44100;
}
}
mp_msg(MSGT_DEMUX, MSGL_INFO, "Audio bits: %d chans: %d\n",
trak->stdata[19],trak->stdata[17]);
mp_msg(MSGT_DEMUX, MSGL_INFO, "Audio sample rate: %d\n",
sh->samplerate/*char2short(trak->stdata,24)*/);
if((trak->stdata[9]==0) && trak->stdata_len >= 36) { // version 0 with extra atoms
int atom_len = char2int(trak->stdata,28);
switch(char2int(trak->stdata,32)) { // atom type
case MOV_FOURCC('e','s','d','s'):
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Found MPEG4 audio Elementary Stream Descriptor atom (%d)!\n", atom_len);
if(atom_len >= 28)
mp_msg(MSGT_DEMUX, MSGL_INFO, "Audio compressed datarate: %dkbit/s\n",
char2int(trak->stdata,62)/1000);
sh->i_bps=char2int(trak->stdata,62)/8;
break;
default:
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Found unknown audio atom %c%c%c%c (%d)!\n",
trak->stdata[32],trak->stdata[33],trak->stdata[34],trak->stdata[35],
atom_len);
}
}
mp_msg(MSGT_DEMUX, MSGL_INFO, "Fourcc: %.4s\n",&trak->fourcc);
#if 0
{ FILE* f=fopen("stdata.dat","wb");
fwrite(trak->stdata,trak->stdata_len,1,f);
fclose(f); }
{ FILE* f=fopen("tkdata.dat","wb");
fwrite(trak->tkdata,trak->tkdata_len,1,f);
fclose(f); }
#endif
// Emulate WAVEFORMATEX struct:
sh->wf=malloc(sizeof(WAVEFORMATEX));
memset(sh->wf,0,sizeof(WAVEFORMATEX));
sh->wf->nChannels=(trak->stdata[16]<<8)+trak->stdata[17];
sh->wf->wBitsPerSample=(trak->stdata[18]<<8)+trak->stdata[19];
// sh->wf->nSamplesPerSec=trak->timescale;
sh->wf->nSamplesPerSec=(trak->stdata[24]<<8)+trak->stdata[25];
sh->wf->nAvgBytesPerSec=sh->wf->nChannels*sh->wf->wBitsPerSample*sh->wf->nSamplesPerSec/8;
// Selection:
if(demuxer->audio->id==-1 || demuxer->audio->id==priv->track_db){
// (auto)selected audio track:
demuxer->audio->id=priv->track_db;
demuxer->audio->sh=sh; sh->ds=demuxer->audio;
}
break;
}
case MOV_TRAK_VIDEO: {
int i, entry;
int flag, start, count_flag, end, palette_count;
int hdr_ptr = 76; // the byte just after depth
unsigned char *palette_map;
sh_video_t* sh=new_sh_video(demuxer,priv->track_db);
int depth = trak->stdata[75]|(trak->stdata[74]<<8);
sh->format=trak->fourcc;
// stdata[]:
// 8 short version
// 10 short revision
// 12 int vendor_id
// 16 int temporal_quality
// 20 int spatial_quality
// 24 short width
// 26 short height
// 28 int h_dpi
// 32 int v_dpi
// 36 int 0
// 40 short frames_per_sample
// 42 char[4] compressor_name
// 74 short depth
// 76 short color_table_id
// additional atoms may follow,
// eg esds atom from .MP4 files
// 78 int atom size
// 82 char[4] atom type
// 86 ... atom data
if(trak->stdata_len >= 86) { // extra atoms found
int pos=78;
int atom_len;
while(pos+8<=trak->stdata_len &&
(pos+(atom_len=char2int(trak->stdata,pos)))<=trak->stdata_len){
switch(char2int(trak->stdata,pos+4)) { // switch atom type
case MOV_FOURCC('g','a','m','a'):
// intfp with gamma value at which movie was captured
// can be used to gamma correct movie display
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Found unsupported Gamma-Correction movie atom (%d)!\n",
atom_len);
break;
case MOV_FOURCC('f','i','e','l'):
// 2 char-values (8bit int) that specify field handling
// see the Apple's QuickTime Fileformat PDF for more info
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Found unsupported Field-Handling movie atom (%d)!\n",
atom_len);
break;
case MOV_FOURCC('m','j','q','t'):
// Motion-JPEG default quantization table
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Found unsupported MJPEG-Quantization movie atom (%d)!\n",
atom_len);
break;
case MOV_FOURCC('m','j','h','t'):
// Motion-JPEG default huffman table
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Found unsupported MJPEG-Huffman movie atom (%d)!\n",
atom_len);
break;
case MOV_FOURCC('e','s','d','s'):
// MPEG4 Elementary Stream Descriptor header
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Found MPEG4 movie Elementary Stream Descriptor atom (%d)!\n", atom_len);
// add code here to save esds header of length atom_len-8
// beginning at stdata[86] to some variable to pass it
// on to the decoder ::atmos
break;
default:
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Found unknown movie atom %c%c%c%c (%d)!\n",
trak->stdata[pos+4],trak->stdata[pos+5],trak->stdata[pos+6],trak->stdata[pos+7],
atom_len);
}
pos+=atom_len;
}
}
if(!sh->fps) sh->fps=trak->timescale;
sh->frametime=1.0f/sh->fps;
sh->disp_w=trak->stdata[25]|(trak->stdata[24]<<8);
sh->disp_h=trak->stdata[27]|(trak->stdata[26]<<8);
// if image size is zero, fallback to display size
if(!sh->disp_w && !sh->disp_h) {
sh->disp_w=trak->tkdata[77]|(trak->tkdata[76]<<8);
sh->disp_h=trak->tkdata[81]|(trak->tkdata[80]<<8);
}
if(depth&(~15)) printf("*** depht = 0x%X\n",depth);
// palettized?
depth&=31; // flag 32 means grayscale
if ((depth == 2) || (depth == 4) || (depth == 8))
palette_count = (1 << depth);
else
palette_count = 0;
// emulate BITMAPINFOHEADER:
if (palette_count)
{
sh->bih=malloc(sizeof(BITMAPINFOHEADER) + palette_count * 4);
memset(sh->bih,0,sizeof(BITMAPINFOHEADER) + palette_count * 4);
sh->bih->biSize=40 + palette_count * 4;
// fetch the relevant fields
flag = BE_16(&trak->stdata[hdr_ptr]);
hdr_ptr += 2;
start = BE_32(&trak->stdata[hdr_ptr]);
hdr_ptr += 4;
count_flag = BE_16(&trak->stdata[hdr_ptr]);
hdr_ptr += 2;
end = BE_16(&trak->stdata[hdr_ptr]);
hdr_ptr += 2;
palette_map = (unsigned char *)sh->bih + 40;
mp_msg(MSGT_DEMUX, MSGL_INFO, "Allocated %d entries for palette\n",
palette_count);
mp_msg(MSGT_DEMUX, MSGL_DBG2, "QT palette: start: %x, end: %x, count flag: %d, flags: %x\n",
start, end, count_flag, flag);
/* XXX: problems with sample (statunit6.mov) with flag&0x4 set! - alex*/
// load default palette
if (flag & 0x08)
{
mp_msg(MSGT_DEMUX, MSGL_INFO, "Using default QT palette\n");
if (palette_count == 4)
memcpy(palette_map, qt_default_palette_4, 4 * 4);
else if (palette_count == 16)
memcpy(palette_map, qt_default_palette_16, 16 * 4);
if (palette_count == 256)
memcpy(palette_map, qt_default_palette_256, 256 * 4);
}
// load palette from file
else
{
mp_msg(MSGT_DEMUX, MSGL_INFO, "Loading palette from file\n");
for (i = start; i <= end; i++)
{
entry = BE_16(&trak->stdata[hdr_ptr]);
hdr_ptr += 2;
// apparently, if count_flag is set, entry is same as i
if (count_flag & 0x8000)
entry = i;
// only care about top 8 bits of 16-bit R, G, or B value
if (entry <= palette_count && entry >= 0)
{
palette_map[entry * 4 + 2] = trak->stdata[hdr_ptr + 0];
palette_map[entry * 4 + 1] = trak->stdata[hdr_ptr + 2];
palette_map[entry * 4 + 0] = trak->stdata[hdr_ptr + 4];
mp_dbg(MSGT_DEMUX, MSGL_DBG2, "QT palette: added entry: %d of %d (colors: R:%x G:%x B:%x)\n",
entry, palette_count,
palette_map[entry * 4 + 2],
palette_map[entry * 4 + 1],
palette_map[entry * 4 + 0]);
}
else
mp_msg(MSGT_DEMUX, MSGL_V, "QT palette: skipped entry (out of count): %d of %d\n",
entry, palette_count);
hdr_ptr += 6;
}
}
}
else
{
sh->bih=malloc(sizeof(BITMAPINFOHEADER));
memset(sh->bih,0,sizeof(BITMAPINFOHEADER));
sh->bih->biSize=40;
}
sh->bih->biWidth=sh->disp_w;
sh->bih->biHeight=sh->disp_h;
sh->bih->biPlanes=0;
sh->bih->biBitCount=depth;
sh->bih->biCompression=trak->fourcc;
sh->bih->biSizeImage=sh->bih->biWidth*sh->bih->biHeight;
mp_msg(MSGT_DEMUX, MSGL_INFO, "Image size: %d x %d (%d bpp)\n",sh->disp_w,sh->disp_h,sh->bih->biBitCount);
if(trak->tkdata_len>81)
mp_msg(MSGT_DEMUX, MSGL_INFO, "Display size: %d x %d\n",
trak->tkdata[77]|(trak->tkdata[76]<<8),
trak->tkdata[81]|(trak->tkdata[80]<<8));
mp_msg(MSGT_DEMUX, MSGL_INFO, "Fourcc: %.4s Codec: '%.*s'\n",&trak->fourcc,trak->stdata[42]&31,trak->stdata+43);
if(demuxer->video->id==-1 || demuxer->video->id==priv->track_db){
// (auto)selected video track:
demuxer->video->id=priv->track_db;
demuxer->video->sh=sh; sh->ds=demuxer->video;
}
break;
}
case MOV_TRAK_GENERIC:
mp_msg(MSGT_DEMUX, MSGL_INFO, "Generic track - not completly understood! (id: %d)\n",
trak->id);
/* XXX: Also this contains the FLASH data */
#if 0
mp_msg(MSGT_DEMUX, MSGL_INFO, "Extracting samples to files (possibly this is an flash anim)\n");
{
int pos = stream_tell(demuxer->stream);
int i;
int fd;
char name[20];
for (i=0; i<trak->samples_size; i++)
{
char buf[trak->samples[i].size];
stream_seek(demuxer->stream, trak->samples[i].pos);
snprintf((char *)&name[0], 20, "samp%d", i);
fd = open((char *)&name[0], O_CREAT|O_WRONLY);
stream_read(demuxer->stream, &buf[0], trak->samples[i].size);
write(fd, &buf[0], trak->samples[i].size);
close(fd);
}
for (i=0; i<trak->chunks_size; i++)
{
char buf[trak->length];
stream_seek(demuxer->stream, trak->chunks[i].pos);
snprintf((char *)&name[0], 20, "chunk%d", i);
fd = open((char *)&name[0], O_CREAT|O_WRONLY);
stream_read(demuxer->stream, &buf[0], trak->length);
write(fd, &buf[0], trak->length);
close(fd);
}
if (trak->samplesize > 0)
{
char *buf;
buf = malloc(trak->samplesize);
stream_seek(demuxer->stream, trak->chunks[0].pos);
snprintf((char *)&name[0], 20, "trak%d", trak->id);
fd = open((char *)&name[0], O_CREAT|O_WRONLY);
stream_read(demuxer->stream, buf, trak->samplesize);
write(fd, buf, trak->samplesize);
close(fd);
}
stream_seek(demuxer->stream, pos);
}
#endif
break;
default:
mp_msg(MSGT_DEMUX, MSGL_INFO, "Unknown track type found (type: %d)\n", trak->type);
break;
}
mp_msg(MSGT_DEMUX, MSGL_INFO, "--------------\n");
priv->track_db++;
trak=NULL;
break;
}
#ifndef HAVE_ZLIB
case MOV_FOURCC('c','m','o','v'): {
mp_msg(MSGT_DEMUX,MSGL_ERR,MSGTR_MOVcomprhdr);
return;
}
#else
case MOV_FOURCC('m','o','o','v'):
case MOV_FOURCC('c','m','o','v'): {
// mp_msg(MSGT_DEMUX,MSGL_ERR,MSGTR_MOVcomprhdr);
lschunks(demuxer,level+1,pos+len,NULL);
break;
}
case MOV_FOURCC('d','c','o','m'): {
// int temp=stream_read_dword(demuxer->stream);
unsigned int algo=be2me_32(stream_read_dword(demuxer->stream));
mp_msg(MSGT_DEMUX, MSGL_INFO, "Compressed header uses %.4s algo!\n",&algo);
break;
}
case MOV_FOURCC('c','m','v','d'): {
// int temp=stream_read_dword(demuxer->stream);
unsigned int moov_sz=stream_read_dword(demuxer->stream);
unsigned int cmov_sz=len-4;
unsigned char* cmov_buf=malloc(cmov_sz);
unsigned char* moov_buf=malloc(moov_sz+16);
int zret;
z_stream zstrm;
stream_t* backup;
mp_msg(MSGT_DEMUX, MSGL_INFO, "Compressed header size: %d / %d\n",cmov_sz,moov_sz);
stream_read(demuxer->stream,cmov_buf,cmov_sz);
zstrm.zalloc = (alloc_func)0;
zstrm.zfree = (free_func)0;
zstrm.opaque = (voidpf)0;
zstrm.next_in = cmov_buf;
zstrm.avail_in = cmov_sz;
zstrm.next_out = moov_buf;
zstrm.avail_out = moov_sz;
zret = inflateInit(&zstrm);
if (zret != Z_OK)
{ mp_msg(MSGT_DEMUX, MSGL_ERR, "QT cmov: inflateInit err %d\n",zret);
return;
}
zret = inflate(&zstrm, Z_NO_FLUSH);
if ((zret != Z_OK) && (zret != Z_STREAM_END))
{ mp_msg(MSGT_DEMUX, MSGL_ERR, "QT cmov inflate: ERR %d\n",zret);
return;
}
#if 0
else {
FILE *DecOut;
DecOut = fopen("Out.bin", "w");
fwrite(moov_buf, 1, moov_sz, DecOut);
fclose(DecOut);
}
#endif
if(moov_sz != zstrm.total_out)
mp_msg(MSGT_DEMUX, MSGL_WARN, "Warning! moov size differs cmov: %d zlib: %d\n",moov_sz,zstrm.total_out);
zret = inflateEnd(&zstrm);
backup=demuxer->stream;
demuxer->stream=new_memory_stream(moov_buf,moov_sz);
stream_skip(demuxer->stream,8);
lschunks(demuxer,level+1,moov_sz,NULL); // parse uncompr. 'moov'
//free_stream(demuxer->stream);
demuxer->stream=backup;
free(cmov_buf);
free(moov_buf);
break;
}
#endif
case MOV_FOURCC('u','d','t','a'):
{
unsigned int udta_id;
off_t udta_len;
off_t udta_size = len;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "mov: user data record found\n");
mp_msg(MSGT_DEMUX, MSGL_INFO, "Quicktime Clip Info:\n");
while((len > 8) && (udta_size > 8))
{
udta_len = stream_read_dword(demuxer->stream);
udta_id = stream_read_dword(demuxer->stream);
udta_size -= 8;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "udta_id: %.4s (len: %d)\n", &udta_id, udta_len);
switch (udta_id)
{
case MOV_FOURCC(0xa9,'c','p','y'):
case MOV_FOURCC(0xa9,'d','a','y'):
case MOV_FOURCC(0xa9,'d','i','r'):
/* 0xa9,'e','d','1' - '9' : edit timestamps */
case MOV_FOURCC(0xa9,'f','m','t'):
case MOV_FOURCC(0xa9,'i','n','f'):
case MOV_FOURCC(0xa9,'p','r','d'):
case MOV_FOURCC(0xa9,'p','r','f'):
case MOV_FOURCC(0xa9,'r','e','q'):
case MOV_FOURCC(0xa9,'s','r','c'):
case MOV_FOURCC('n','a','m','e'):
case MOV_FOURCC(0xa9,'n','a','m'):
case MOV_FOURCC(0xa9,'A','R','T'):
case MOV_FOURCC(0xa9,'c','m','t'):
case MOV_FOURCC(0xa9,'a','u','t'):
case MOV_FOURCC(0xa9,'s','w','r'):
{
off_t text_len = stream_read_word(demuxer->stream);
char text[text_len+2+1];
stream_read(demuxer->stream, (char *)&text, text_len+2);
text[text_len+2] = 0x0;
switch(udta_id)
{
case MOV_FOURCC(0xa9,'a','u','t'):
demux_info_add(demuxer, "author", &text[2]);
mp_msg(MSGT_DEMUX, MSGL_INFO, " Author: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'c','p','y'):
demux_info_add(demuxer, "copyright", &text[2]);
mp_msg(MSGT_DEMUX, MSGL_INFO, " Copyright: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'i','n','f'):
mp_msg(MSGT_DEMUX, MSGL_INFO, " Info: %s\n", &text[2]);
break;
case MOV_FOURCC('n','a','m','e'):
case MOV_FOURCC(0xa9,'n','a','m'):
demux_info_add(demuxer, "name", &text[2]);
mp_msg(MSGT_DEMUX, MSGL_INFO, " Name: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'A','R','T'):
mp_msg(MSGT_DEMUX, MSGL_INFO, " Artist: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'d','i','r'):
mp_msg(MSGT_DEMUX, MSGL_INFO, " Director: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'c','m','t'):
demux_info_add(demuxer, "comments", &text[2]);
mp_msg(MSGT_DEMUX, MSGL_INFO, " Comment: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'r','e','q'):
mp_msg(MSGT_DEMUX, MSGL_INFO, " Requirements: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'s','w','r'):
demux_info_add(demuxer, "encoder", &text[2]);
mp_msg(MSGT_DEMUX, MSGL_INFO, " Software: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'d','a','y'):
mp_msg(MSGT_DEMUX, MSGL_INFO, " Creation timestamp: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'f','m','t'):
mp_msg(MSGT_DEMUX, MSGL_INFO, " Format: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'p','r','d'):
mp_msg(MSGT_DEMUX, MSGL_INFO, " Producer: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'p','r','f'):
mp_msg(MSGT_DEMUX, MSGL_INFO, " Performer(s): %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'s','r','c'):
mp_msg(MSGT_DEMUX, MSGL_INFO, " Source providers: %s\n", &text[2]);
break;
}
udta_size -= 4+text_len;
break;
}
/* some other shits: WLOC - window location,
LOOP - looping style,
SelO - play only selected frames
AllF - play all frames
*/
case MOV_FOURCC('W','L','O','C'):
case MOV_FOURCC('L','O','O','P'):
case MOV_FOURCC('S','e','l','O'):
case MOV_FOURCC('A','l','l','F'):
default:
{
char dump[udta_len-4];
stream_read(demuxer->stream, (char *)&dump, udta_len-4-4);
udta_size -= udta_len;
}
}
}
break;
} /* eof udta */
default:
id = be2me_32(id);
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: unknown chunk: %.4s %d\n",&id,(int)len);
} /* endof switch */
} /* endof else */
pos+=len+8;
if(pos>=endpos) break;
if(!stream_seek(demuxer->stream,pos)) break;
}
}
int mov_read_header(demuxer_t* demuxer){
mov_priv_t* priv=demuxer->priv;
mp_msg(MSGT_DEMUX, MSGL_DBG3, "mov_read_header!\n");
// Parse header:
stream_reset(demuxer->stream);
if(!stream_seek(demuxer->stream,priv->moov_start))
{
mp_msg(MSGT_DEMUX,MSGL_ERR,"MOV: Cannot seek to the beginning of the Movie header (0x%x)\n",
priv->moov_start);
return 0;
}
lschunks(demuxer, 0, priv->moov_end, NULL);
return 1;
}
// return value:
// 0 = EOF or no stream found
// 1 = successfully read a packet
int demux_mov_fill_buffer(demuxer_t *demuxer,demux_stream_t* ds){
mov_priv_t* priv=demuxer->priv;
mov_track_t* trak=NULL;
float pts;
if(ds->id<0 || ds->id>=priv->track_db) return 0;
trak=priv->tracks[ds->id];
if(trak->samplesize){
// read chunk:
int x;
if(trak->pos>=trak->chunks_size) return 0; // EOF
stream_seek(demuxer->stream,trak->chunks[trak->pos].pos);
pts=(float)(trak->chunks[trak->pos].sample*trak->duration)/(float)trak->timescale;
if(trak->samplesize!=1)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "WARNING! Samplesize(%d) != 1\n",
trak->samplesize);
x=trak->chunks[trak->pos].size*trak->samplesize;
}
else
x=trak->chunks[trak->pos].size;
// printf("X = %d\n", x);
/* the following stuff is audio related */
if (trak->type == MOV_TRAK_AUDIO)
{
if(trak->stdata_len>=36 && trak->stdata[30] && trak->stdata[31]){
// extended stsd header - works for CBR MP3:
x/=(trak->stdata[30]<<8)+trak->stdata[31]; // samples/packet
// x*=(trak->stdata[34]<<8)+trak->stdata[35]; // bytes/packet
x*=(trak->stdata[38]<<8)+trak->stdata[39]; // bytes/frame
} else {
// works for ima4: -- we should find this info in mov headers!
if(ds->ss_div!=1 || ds->ss_mul!=1){
x/=ds->ss_div; x*=ds->ss_mul; // compression ratio fix ! HACK !
} else {
x*=(trak->stdata[18]<<8)+trak->stdata[19];x/=8; // bits/sample
}
}
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Audio sample %d bytes pts %5.3f\n",trak->chunks[trak->pos].size*trak->samplesize,pts);
} /* MOV_TRAK_AUDIO */
ds_read_packet(ds,demuxer->stream,x,pts,trak->chunks[trak->pos].pos,0);
} else {
// read sample:
if(trak->pos>=trak->samples_size) return 0; // EOF
stream_seek(demuxer->stream,trak->samples[trak->pos].pos);
pts=(float)trak->samples[trak->pos].pts/(float)trak->timescale;
ds_read_packet(ds,demuxer->stream,trak->samples[trak->pos].size,pts,trak->samples[trak->pos].pos,0);
}
++trak->pos;
return 1;
}
static float mov_seek_track(mov_track_t* trak,float pts,int flags){
// printf("MOV track seek called %5.3f \n",pts);
if(flags&2) pts*=trak->length; else pts*=(float)trak->timescale;
if(trak->samplesize){
int sample=pts/trak->duration;
// printf("MOV track seek - chunk: %d (pts: %5.3f dur=%d) \n",sample,pts,trak->duration);
if(!(flags&1)) sample+=trak->chunks[trak->pos].sample; // relative
trak->pos=0;
while(trak->pos<trak->chunks_size && trak->chunks[trak->pos].sample<sample) ++trak->pos;
pts=(float)(trak->chunks[trak->pos].sample*trak->duration)/(float)trak->timescale;
} else {
unsigned int ipts;
if(!(flags&1)) pts+=trak->samples[trak->pos].pts;
if(pts<0) pts=0;
ipts=pts;
//printf("MOV track seek - sample: %d \n",ipts);
for(trak->pos=0;trak->pos<trak->samples_size;++trak->pos){
if(trak->samples[trak->pos].pts>=ipts) break; // found it!
}
if(trak->keyframes_size){
// find nearest keyframe
int i;
for(i=0;i<trak->keyframes_size;i++){
if(trak->keyframes[i]>=trak->pos) break;
}
if(i>0 && (trak->keyframes[i]-trak->pos) > (trak->pos-trak->keyframes[i-1]))
--i;
trak->pos=trak->keyframes[i];
// printf("nearest keyframe: %d \n",trak->pos);
}
pts=(float)trak->samples[trak->pos].pts/(float)trak->timescale;
}
// printf("MOV track seek done: %5.3f \n",pts);
return pts;
}
void demux_seek_mov(demuxer_t *demuxer,float pts,int flags){
mov_priv_t* priv=demuxer->priv;
demux_stream_t* ds;
// printf("MOV seek called %5.3f flag=%d \n",pts,flags);
ds=demuxer->video;
if(ds && ds->id>=0 && ds->id<priv->track_db){
mov_track_t* trak=priv->tracks[ds->id];
//if(flags&2) pts*=(float)trak->length/(float)trak->timescale;
//if(!(flags&1)) pts+=ds->pts;
pts=ds->pts=mov_seek_track(trak,pts,flags);
flags=1; // absolute seconds
}
ds=demuxer->audio;
if(ds && ds->id>=0 && ds->id<priv->track_db){
mov_track_t* trak=priv->tracks[ds->id];
//if(flags&2) pts*=(float)trak->length/(float)trak->timescale;
//if(!(flags&1)) pts+=ds->pts;
ds->pts=mov_seek_track(trak,pts,flags);
}
}
Reference in New Issue View Git Blame Copy Permalink