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mpv/libmpdemux/demux_mov.c

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// 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.
// All sort of Stuff about MPEG4:
// http://www.cmlab.csie.ntu.edu.tw/~pkhsiao/thesis.html
// I really recommend N4270-1.doc and N4270-2.doc which are exact specs
// of the MP4-File Format and the MPEG4 Specific extensions. ::atmos
#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"
#include "parse_mp4.h" // .MP4 specific stuff
#ifdef MACOSX
#include <QuickTime/QuickTime.h>
#else
#include "../loader/qtx/qtxsdk/components.h"
#endif
#ifdef HAVE_ZLIB
#include <zlib.h>
#endif
#ifndef _FCNTL_H
#include <fcntl.h>
#endif
#define BE_16(x) (((unsigned char *)(x))[0] << 8 | \
((unsigned char *)(x))[1])
#define BE_32(x) (((unsigned char *)(x))[0] << 24 | \
((unsigned char *)(x))[1] << 16 | \
((unsigned char *)(x))[2] << 8 | \
((unsigned char *)(x))[3])
#define char2short(x,y) BE_16(&(x)[(y)])
#define char2int(x,y) BE_32(&(x)[(y)])
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;
typedef struct {
unsigned int dur;
unsigned int pos;
int speed;
//
int frames;
int start_sample;
int start_frame;
int pts_offset;
} mov_editlist_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;
//
unsigned int media_handler;
unsigned int data_handler;
//
int timescale;
unsigned int length;
int samplesize; // 0 = variable
int duration; // 0 = variable
int width,height; // for video
unsigned int fourcc;
unsigned int nchannels;
unsigned int samplebytes;
//
int tkdata_len; // track data
unsigned char* tkdata;
int stdata_len; // stream data
unsigned char* stdata;
//
unsigned char* stream_header;
int stream_header_len; // if >0, this header should be sent before the 1st frame
//
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;
int editlist_size;
mov_editlist_t* editlist;
int editlist_pos;
//
void* desc; // image/sound/etc description (pointer to ImageDescription etc)
} mov_track_t;
void mov_build_index(mov_track_t* trak,int timescale){
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_INFO, "MOV track #%d: %d chunks, %d samples\n",trak->id,trak->chunks_size,trak->samples_size);
mp_msg(MSGT_DEMUX, MSGL_V, "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_AUDIO){
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;
}
}
// precalc editlist entries
if(trak->editlist_size>0){
int frame=0;
int e_pts=0;
for(i=0;i<trak->editlist_size;i++){
mov_editlist_t* el=&trak->editlist[i];
int sample=0;
int pts=el->pos;
el->start_frame=frame;
if(pts<0){
// skip!
el->frames=0; continue;
}
// find start sample
for(;sample<trak->samples_size;sample++){
if(pts<=trak->samples[sample].pts) break;
}
el->start_sample=sample;
el->pts_offset=((long long)e_pts*(long long)trak->timescale)/(long long)timescale-trak->samples[sample].pts;
pts+=((long long)el->dur*(long long)trak->timescale)/(long long)timescale;
e_pts+=el->dur;
// find end sample
for(;sample<trak->samples_size;sample++){
if(pts<=trak->samples[sample].pts) break;
}
el->frames=sample-el->start_sample;
frame+=el->frames;
mp_msg(MSGT_DEMUX,MSGL_V,"EL#%d: pts=%d 1st_sample=%d frames=%d (%5.3fs) pts_offs=%d\n",i,
el->pos,el->start_sample, el->frames,
(float)(el->dur)/(float)timescale, el->pts_offset);
}
}
}
#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];
int timescale; // movie timescale
int duration; // movie duration (in movie timescale units)
} 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));
while(1){
int i;
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'): {
unsigned int tmp;
// File Type Box (ftyp):
// char[4] major_brand (eg. 'isom')
// int minor_version (eg. 0x00000000)
// char[4] compatible_brands[] (eg. 'mp41')
// compatible_brands list spans to the end of box
#if 1
tmp = stream_read_dword(demuxer->stream);
switch(tmp) {
case MOV_FOURCC('i','s','o','m'):
mp_msg(MSGT_DEMUX,MSGL_V,"ISO: File Type Major Brand: ISO Base Media\n");
break;
case MOV_FOURCC('m','p','4','1'):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: ISO/IEC 14496-1 (MPEG-4 system) v1\n");
break;
case MOV_FOURCC('m','p','4','2'):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: ISO/IEC 14496-1 (MPEG-4 system) v2\n");
break;
case MOV_FOURCC('M','4','A',' '):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: Apple iTunes AAC-LC Audio\n");
break;
case MOV_FOURCC('M','4','P',' '):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: Apple iTunes AAC-LC Protected Audio\n");
break;
case MOV_FOURCC('q','t',' ',' '):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: Original QuickTime\n");
break;
case MOV_FOURCC('3','g','p','1'):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: 3GPP Profile 1\n");
break;
case MOV_FOURCC('3','g','p','2'):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: 3GPP Profile 2\n");
break;
case MOV_FOURCC('3','g','p','3'):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: 3GPP Profile 3\n");
break;
case MOV_FOURCC('3','g','p','4'):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: 3GPP Profile 4\n");
break;
case MOV_FOURCC('3','g','p','5'):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: 3GPP Profile 5\n");
break;
case MOV_FOURCC('m','m','p','4'):
mp_msg(MSGT_DEMUX,MSGL_INFO,"ISO: File Type Major Brand: Mobile ISO/IEC 14496-1 (MPEG-4 system)\n");
break;
default:
tmp = be2me_32(tmp);
mp_msg(MSGT_DEMUX,MSGL_WARN,"ISO: Unknown File Type Major Brand: %.4s\n",&tmp);
}
mp_msg(MSGT_DEMUX,MSGL_V,"ISO: File Type Minor Version: %d\n",
stream_read_dword(demuxer->stream));
skipped += 8;
// List all compatible brands
for(i = 0; i < ((len-16)/4); i++) {
tmp = be2me_32(stream_read_dword(demuxer->stream));
mp_msg(MSGT_DEMUX,MSGL_V,"ISO: File Type Compatible Brand #%d: %.4s\n",i,&tmp);
skipped += 4;
}
#endif
} 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);
skipped+=8;
i = stream_read_dword(demuxer->stream)-8;
if(stream_read_dword(demuxer->stream)==MOV_FOURCC('r','m','r','a')){
int ref=0;
skipped+=i;
mp_msg(MSGT_DEMUX,MSGL_INFO,"MOV: Reference Media file!!!\n");
//set demuxer type to playlist ...
demuxer->type=DEMUXER_TYPE_PLAYLIST;
while(i>0){
int len=stream_read_dword(demuxer->stream)-8;
int fcc=stream_read_dword(demuxer->stream);
if(len<0) break; // EOF!?
i-=8;
// printf("i=%d len=%d\n",i,len);
switch(fcc){
case MOV_FOURCC('r','m','d','a'):
continue;
case MOV_FOURCC('r','d','r','f'): {
int tmp=stream_read_dword(demuxer->stream);
int type=stream_read_dword_le(demuxer->stream);
int slen=stream_read_dword(demuxer->stream);
//char* s=malloc(slen+1);
//stream_read(demuxer->stream,s,slen);
//FIXME: also store type & data_rate ?
ds_read_packet(demuxer->video,
demuxer->stream,
slen,
0,
stream_tell(demuxer->stream),
0 // no flags
);
flags|=4;
mp_msg(MSGT_DEMUX,MSGL_V,"Added reference to playlist\n");
//s[slen]=0;
//mp_msg(MSGT_DEMUX,MSGL_INFO,"REF: [%.4s] %s\n",&type,s);
len-=12+slen;i-=12+slen; break;
}
case MOV_FOURCC('r','m','d','r'): {
int flags=stream_read_dword(demuxer->stream);
int rate=stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V," min. data rate: %d bits/sec\n",rate);
len-=8; i-=8; break;
}
case MOV_FOURCC('r','m','q','u'): {
int q=stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V," quality index: %d\n",q);
len-=4; i-=4; break;
}
}
i-=len;stream_skip(demuxer->stream,len);
}
}
flags|=1;
break;
case MOV_FOURCC('w','i','d','e'):
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: 'WIDE' chunk found!\n");
if(flags&2) 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;
if(flags==3){
// if we're over the headers, then we can stop parsing here!
demuxer->priv=priv;
return 1;
}
break;
case MOV_FOURCC('f','r','e','e'):
case MOV_FOURCC('s','k','i','p'):
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;
case MOV_FOURCC('p','n','o','t'):
case MOV_FOURCC('P','I','C','T'):
/* dunno what, but we shoudl ignore it */
break;
default:
if(no==0){ free(priv); 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==3){
demuxer->priv=priv;
return 1;
}
free(priv);
if ((flags==5) || (flags==7)) // reference & header sent
return 1;
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 0;
}
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);
/*
0 1 Version
1 3 Flags
4 4 Creation time
8 4 Modification time
12 4 Track ID
16 4 Reserved
20 4 Duration
24 8 Reserved
32 2 Layer
34 2 Alternate group
36 2 Volume
38 2 Reserved
40 36 Matrix structure
76 4 Track width
80 4 Track height
*/
mp_msg(MSGT_DEMUX,MSGL_V,"tkhd len=%d ver=%d flags=0x%X id=%d dur=%d lay=%d vol=%d\n",
trak->tkdata_len, trak->tkdata[0], trak->tkdata[1],
char2int(trak->tkdata,12), // id
char2int(trak->tkdata,20), // duration
char2short(trak->tkdata,32), // layer
char2short(trak->tkdata,36)); // volume
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('h','d','l','r'): {
unsigned int tmp=stream_read_dword(demuxer->stream);
unsigned int type=stream_read_dword_le(demuxer->stream);
unsigned int subtype=stream_read_dword_le(demuxer->stream);
unsigned int manufact=stream_read_dword_le(demuxer->stream);
unsigned int comp_flags=stream_read_dword(demuxer->stream);
unsigned int comp_mask=stream_read_dword(demuxer->stream);
int len=stream_read_char(demuxer->stream);
char* str=malloc(len+1);
stream_read(demuxer->stream,str,len);
str[len]=0;
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: %*sHandler header: %.4s/%.4s (%.4s) %s\n",level,"",&type,&subtype,&manufact,str);
free(str);
switch(bswap_32(type)){
case MOV_FOURCC('m','h','l','r'):
trak->media_handler=bswap_32(subtype); break;
case MOV_FOURCC('d','h','l','r'):
trak->data_handler=bswap_32(subtype); break;
default:
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: unknown handler class: 0x%X (%.4s)\n",bswap_32(type),&type);
}
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);
/* some files created with Broadcast 2000 (e.g. ilacetest.mov)
contain raw I420 video but have a yv12 fourcc */
if(fourcc==mmioFOURCC('y','v','1','2')) fourcc=mmioFOURCC('I','4','2','0');
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(fourcc!=trak->fourcc && i)
mp_msg(MSGT_DEMUX,MSGL_WARN,MSGTR_MOVvariableFourCC);
// 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(!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;
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(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 1
trak->editlist_size=entries;
trak->editlist=malloc(trak->editlist_size*sizeof(mov_editlist_t));
for (i=0;i<entries;i++)
{
int dur=stream_read_dword(demuxer->stream);
int mt=stream_read_dword(demuxer->stream);
int mr=stream_read_dword(demuxer->stream); // 16.16fp
trak->editlist[i].dur=dur;
trak->editlist[i].pos=mt;
trak->editlist[i].speed=mr;
mp_msg(MSGT_DEMUX, MSGL_V,"MOV: %*s entry#%d: duration: %d start time: %d speed: %3.1fx\n",level,"",
i,
dur,mt,(float)mr/65536.0f);
}
#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('m','v','h','d'): {
stream_skip(demuxer->stream,12);
priv->timescale=stream_read_dword(demuxer->stream);
priv->duration=stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX, MSGL_V,"MOV: %*sMovie header (%d bytes): tscale=%d dur=%d\n",level,"",(int)len,
(int)priv->timescale,(int)priv->duration);
break;
}
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;
}
if(!priv->track_db) mp_msg(MSGT_DEMUX, MSGL_INFO, "--------------\n");
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,priv->timescale);
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;
switch( sh->format ) {
case 0x726D6173: /* samr */
/* amr narrowband */
trak->samplebytes=sh->samplesize=1;
trak->nchannels=sh->channels=1;
sh->samplerate=8000;
break;
case 0x62776173: /* sawb */
/* amr wideband */
trak->samplebytes=sh->samplesize=1;
trak->nchannels=sh->channels=1;
sh->samplerate=16000;
break;
default:
// 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+ (version>=1)
// 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)
// 36 char[] atom data (len=size-8)
trak->samplebytes=sh->samplesize=char2short(trak->stdata,18)/8;
trak->nchannels=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 < 7000) && 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 rate: %d\n",
sh->samplesize*8,sh->channels,sh->samplerate);
if(trak->stdata_len >= 44 && trak->stdata[9]>=1){
mp_msg(MSGT_DEMUX,MSGL_V,"Audio header: samp/pack=%d bytes/pack=%d bytes/frame=%d bytes/samp=%d \n",
char2int(trak->stdata,28),
char2int(trak->stdata,32),
char2int(trak->stdata,36),
char2int(trak->stdata,40));
if(trak->stdata_len>=44+8){
int len=char2int(trak->stdata,44);
int fcc=char2int(trak->stdata,48);
// we have extra audio headers!!!
printf("Audio extra header: len=%d fcc=0x%X\n",len,fcc);
sh->codecdata_len = len-8;
sh->codecdata = trak->stdata+44+8;
}
}
if((trak->stdata[9]==0 || trak->stdata[9]==1) && trak->stdata_len >= 36) { // version 0 with extra atoms
int adjust = (trak->stdata[9]==1)?48:0;
int atom_len = char2int(trak->stdata,28+adjust);
switch(char2int(trak->stdata,32+adjust)) { // 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 > 8) {
esds_t esds;
if(!mp4_parse_esds(&trak->stdata[36+adjust], atom_len-8, &esds)) {
sh->i_bps = esds.avgBitrate/8;
// printf("######## audio format = %d ########\n",esds.objectTypeId);
if(esds.objectTypeId==MP4OTI_MPEG1Audio || esds.objectTypeId==MP4OTI_MPEG2AudioPart3)
sh->format=0x55; // .mp3
// dump away the codec specific configuration for the AAC decoder
if(esds.decoderConfigLen){
if( (esds.decoderConfig[0]>>3) == 29 )
sh->format = 0x1d61346d; // request multi-channel mp3 decoder
sh->codecdata_len = esds.decoderConfigLen;
sh->codecdata = (unsigned char *)malloc(sh->codecdata_len);
memcpy(sh->codecdata, esds.decoderConfig, sh->codecdata_len);
}
}
mp4_free_esds(&esds); // freeup esds mem
#if 0
{ FILE* f=fopen("esds.dat","wb");
fwrite(&trak->stdata[36],atom_len-8,1,f);
fclose(f); }
#endif
}
} break;
default:
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Found unknown audio atom %c%c%c%c (%d)!\n",
trak->stdata[32+adjust],trak->stdata[33+adjust],trak->stdata[34+adjust],trak->stdata[35+adjust],
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=sh->channels;
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];
if(trak->stdata_len >= 44 && trak->stdata[9]>=1 && char2int(trak->stdata,28)>0){
//Audio header: samp/pack=4096 bytes/pack=743 bytes/frame=1486 bytes/samp=2
sh->wf->nAvgBytesPerSec=(sh->wf->nChannels*sh->wf->nSamplesPerSec*
char2int(trak->stdata,32)+char2int(trak->stdata,28)/2)
/char2int(trak->stdata,28);
sh->wf->nBlockAlign=char2int(trak->stdata,36);
} else {
sh->wf->nAvgBytesPerSec=sh->wf->nChannels*sh->wf->wBitsPerSample*sh->wf->nSamplesPerSec/8;
// workaround for ms11 ima4
if (sh->format == 0x1100736d && trak->stdata_len >= 36)
sh->wf->nBlockAlign=char2int(trak->stdata,36);
}
// 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, gray;
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
{ ImageDescription* id=malloc(8+trak->stdata_len);
trak->desc=id;
id->idSize=8+trak->stdata_len;
// id->cType=bswap_32(trak->fourcc);
id->cType=le2me_32(trak->fourcc);
id->version=char2short(trak->stdata,8);
id->revisionLevel=char2short(trak->stdata,10);
id->vendor=char2int(trak->stdata,12);
id->temporalQuality=char2int(trak->stdata,16);
id->spatialQuality=char2int(trak->stdata,20);
id->width=char2short(trak->stdata,24);
id->height=char2short(trak->stdata,26);
id->hRes=char2int(trak->stdata,28);
id->vRes=char2int(trak->stdata,32);
id->dataSize=char2int(trak->stdata,36);
id->frameCount=char2short(trak->stdata,40);
memcpy(&id->name,trak->stdata+42,32);
id->depth=char2short(trak->stdata,74);
id->clutID=char2short(trak->stdata,76);
if(trak->stdata_len>78) memcpy(((char*)&id->clutID)+2,trak->stdata+78,trak->stdata_len-78);
sh->ImageDesc=id;
#if 0
{ FILE *f=fopen("ImageDescription","wb");
fwrite(id,id->idSize,1,f);
fclose(f);
}
#endif
}
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
if(atom_len > 8) {
esds_t esds;
if(!mp4_parse_esds(trak->stdata+pos+8, atom_len-8, &esds)) {
if(esds.objectTypeId==MP4OTI_MPEG2VisualSimple || esds.objectTypeId==MP4OTI_MPEG2VisualMain ||
esds.objectTypeId==MP4OTI_MPEG2VisualSNR || esds.objectTypeId==MP4OTI_MPEG2VisualSpatial ||
esds.objectTypeId==MP4OTI_MPEG2VisualHigh || esds.objectTypeId==MP4OTI_MPEG2Visual422)
sh->format=mmioFOURCC('m', 'p', 'g', '2');
else if(esds.objectTypeId==MP4OTI_MPEG1Visual)
sh->format=mmioFOURCC('m', 'p', 'g', '1');
// dump away the codec specific configuration for the AAC decoder
trak->stream_header_len = esds.decoderConfigLen;
trak->stream_header = (unsigned char *)malloc(trak->stream_header_len);
memcpy(trak->stream_header, esds.decoderConfig, trak->stream_header_len);
}
mp4_free_esds(&esds); // freeup esds mem
}
break;
case MOV_FOURCC('a','v','c','C'):
// AVC decoder configuration record
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: AVC decoder configuration record atom (%d)!\n", atom_len);
if(atom_len > 8) {
int i, poffs, cnt;
// Parse some parts of avcC, just for fun :)
// real parsing is done by avc1 decoder
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: avcC version: %d\n", *(trak->stdata+pos+8));
if (*(trak->stdata+pos+8) != 1)
mp_msg(MSGT_DEMUX, MSGL_ERR, "MOV: unknown avcC version (%d). Expexct problems.\n", *(trak->stdata+pos+9));
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: avcC profile: %d\n", *(trak->stdata+pos+9));
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: avcC profile compatibility: %d\n", *(trak->stdata+pos+10));
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: avcC level: %d\n", *(trak->stdata+pos+11));
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: avcC nal length size: %d\n", ((*(trak->stdata+pos+12))&0x03)+1);
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: avcC number of sequence param sets: %d\n", cnt = (*(trak->stdata+pos+13) & 0x1f));
poffs = pos + 14;
for (i = 0; i < cnt; i++) {
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: avcC sps %d have length %d\n", i, BE_16(trak->stdata+poffs));
poffs += BE_16(trak->stdata+poffs) + 2;
}
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: avcC number of picture param sets: %d\n", *(trak->stdata+poffs));
poffs++;
for (i = 0; i < cnt; i++) {
mp_msg(MSGT_DEMUX, MSGL_V, "MOV: avcC pps %d have length %d\n", i, BE_16(trak->stdata+poffs));
poffs += BE_16(trak->stdata+poffs) + 2;
}
// Copy avcC for the AVC decoder
// This data will be put in extradata below, where BITMAPINFOHEADER is created
trak->stream_header_len = atom_len-8;
trak->stream_header = (unsigned char *)malloc(trak->stream_header_len);
memcpy(trak->stream_header, trak->stdata+pos+8, trak->stream_header_len);
}
break;
case 0:
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);
}
if(atom_len<8) break;
pos+=atom_len;
// printf("pos=%d max=%d\n",pos,trak->stdata_len);
}
}
sh->fps=trak->timescale/
((trak->durmap_size>=1)?(float)trak->durmap[0].dur:1);
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);
} else if(sh->disp_w!=(trak->tkdata[77]|(trak->tkdata[76]<<8))){
// codec and display width differ... use display one for aspect
sh->aspect=trak->tkdata[77]|(trak->tkdata[76]<<8);
sh->aspect/=trak->tkdata[81]|(trak->tkdata[80]<<8);
}
if(depth>32+8) printf("*** depth = 0x%X\n",depth);
// palettized?
gray = 0;
if (depth > 32) { depth&=31; gray = 1; } // depth > 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)
{
if (gray)
{
mp_msg(MSGT_DEMUX, MSGL_INFO, "Using default QT grayscale palette\n");
if (palette_count == 16)
memcpy(palette_map, qt_default_grayscale_palette_16, 16 * 4);
else if (palette_count == 256) {
memcpy(palette_map, qt_default_grayscale_palette_256, 256 * 4);
if (trak->fourcc == mmioFOURCC('c','v','i','d')) {
int i;
// Hack for grayscale CVID, negative palette
// If you have samples where this is not required contact me (rxt)
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: greyscale cvid with default palette,"
" enabling negative palette hack.\n");
for (i = 0; i < 256 * 4; i++)
palette_map[i] = palette_map[i] ^ 0xff;
}
}
}
else
{
mp_msg(MSGT_DEMUX, MSGL_INFO, "Using default QT colour 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);
else 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
{
if (trak->fourcc == mmioFOURCC('a','v','c','1')) {
sh->bih=malloc(sizeof(BITMAPINFOHEADER) + trak->stream_header_len);
memset(sh->bih,0,sizeof(BITMAPINFOHEADER) + trak->stream_header_len);
sh->bih->biSize=40 + trak->stream_header_len;
memcpy(((unsigned char *)sh->bih)+40, trak->stream_header, trak->stream_header_len);
free (trak->stream_header);
trak->stream_header_len = 0;
trak->stream_header = NULL;
} 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 completely understood! (id: %d)\n",
trak->id);
/* XXX: Also this contains the FLASH data */
#if 0
{
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_V, "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_V, " 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_V, " Copyright: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'i','n','f'):
mp_msg(MSGT_DEMUX, MSGL_V, " 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_V, " Name: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'A','R','T'):
mp_msg(MSGT_DEMUX, MSGL_V, " Artist: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'d','i','r'):
mp_msg(MSGT_DEMUX, MSGL_V, " 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_V, " Comment: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'r','e','q'):
mp_msg(MSGT_DEMUX, MSGL_V, " 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_V, " Software: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'d','a','y'):
mp_msg(MSGT_DEMUX, MSGL_V, " Creation timestamp: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'f','m','t'):
mp_msg(MSGT_DEMUX, MSGL_V, " Format: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'p','r','d'):
mp_msg(MSGT_DEMUX, MSGL_V, " Producer: %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'p','r','f'):
mp_msg(MSGT_DEMUX, MSGL_V, " Performer(s): %s\n", &text[2]);
break;
case MOV_FOURCC(0xa9,'s','r','c'):
mp_msg(MSGT_DEMUX, MSGL_V, " 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:
{
if( udta_len>udta_size)
udta_len=udta_size;
{
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;
int t_no;
int best_a_id=-1, best_a_len=0;
int best_v_id=-1, best_v_len=0;
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);
// just in case we have hit eof while parsing...
demuxer->stream->eof = 0;
// mp_msg(MSGT_DEMUX, MSGL_INFO, "--------------\n");
// find the best (longest) streams:
for(t_no=0;t_no<priv->track_db;t_no++){
mov_track_t* trak=priv->tracks[t_no];
int len=(trak->samplesize) ? trak->chunks_size : trak->samples_size;
if(demuxer->a_streams[t_no]){ // need audio
if(len>best_a_len){ best_a_len=len; best_a_id=t_no; }
}
if(demuxer->v_streams[t_no]){ // need video
if(len>best_v_len){ best_v_len=len; best_v_id=t_no; }
}
}
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: longest streams: A: #%d (%d samples) V: #%d (%d samples)\n",
best_a_id,best_a_len,best_v_id,best_v_len);
if(demuxer->audio->id==-1 && best_a_id>=0) demuxer->audio->id=best_a_id;
if(demuxer->video->id==-1 && best_v_id>=0) demuxer->video->id=best_v_id;
// setup sh pointers:
if(demuxer->audio->id>=0){
sh_audio_t* sh=demuxer->a_streams[demuxer->audio->id];
if(sh){
demuxer->audio->sh=sh; sh->ds=demuxer->audio;
} else {
mp_msg(MSGT_DEMUX, MSGL_ERR, "MOV: selected audio stream (%d) does not exists\n",demuxer->audio->id);
demuxer->audio->id=-2;
}
}
if(demuxer->video->id>=0){
sh_video_t* sh=demuxer->v_streams[demuxer->video->id];
if(sh){
demuxer->video->sh=sh; sh->ds=demuxer->video;
} else {
mp_msg(MSGT_DEMUX, MSGL_ERR, "MOV: selected video stream (%d) does not exists\n",demuxer->video->id);
demuxer->video->id=-2;
}
}
#if 1
if(verbose>2){
for(t_no=0;t_no<priv->track_db;t_no++){
mov_track_t* trak=priv->tracks[t_no];
if(trak->type==MOV_TRAK_GENERIC){
int i;
int fd;
char name[20];
mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: Track #%d: Extracting %d data chunks to files\n",t_no,trak->samples_size);
for (i=0; i<trak->samples_size; i++)
{
int len=trak->samples[i].size;
char buf[len];
stream_seek(demuxer->stream, trak->samples[i].pos);
snprintf(name, 20, "t%02d-s%03d.%s", t_no,i,
(trak->media_handler==MOV_FOURCC('f','l','s','h')) ?
"swf":"dump");
fd = open(name, O_CREAT|O_WRONLY);
// { int j;
// for(j=0;j<trak->stdata_len-3; j++)
// printf("stdata[%d]=0x%X ize=0x%X\n",j,char2int(trak->stdata,j),MOV_FOURCC('z','l','i','b'));
// }
if( //trak->media_handler==MOV_FOURCC('s','p','r','t') &&
trak->stdata_len>=16 &&
char2int(trak->stdata,12)==MOV_FOURCC('z','l','i','b')
){
int newlen=stream_read_dword(demuxer->stream);
#ifdef HAVE_ZLIB
// unzip:
z_stream zstrm;
int zret;
char buf2[newlen];
len-=4;
stream_read(demuxer->stream, buf, len);
zstrm.zalloc = (alloc_func)0;
zstrm.zfree = (free_func)0;
zstrm.opaque = (voidpf)0;
zstrm.next_in = buf;
zstrm.avail_in = len;
zstrm.next_out = buf2;
zstrm.avail_out = newlen;
zret = inflateInit(&zstrm);
zret = inflate(&zstrm, Z_NO_FLUSH);
if(newlen != zstrm.total_out)
mp_msg(MSGT_DEMUX, MSGL_WARN, "Warning! unzipped frame size differs hdr: %d zlib: %d\n",newlen,zstrm.total_out);
write(fd, buf2, newlen);
} else {
#else
len-=4;
printf("******* ZLIB COMPRESSED SAMPLE!!!!! (%d->%d bytes) *******\n",len,newlen);
}
{
#endif
stream_read(demuxer->stream, buf, len);
write(fd, buf, len);
}
close(fd);
}
}
}
}
demuxer->stream->eof = 0;
#endif
return 1;
}
/**
* \brief return the mov track that belongs to a demuxer stream
* \param ds the demuxer stream, may be NULL
* \return the mov track info structure belonging to the stream,
* NULL if not found
*/
static mov_track_t *stream_track(mov_priv_t *priv, demux_stream_t *ds) {
if (ds && (ds->id >= 0) && (ds->id < priv->track_db))
return priv->tracks[ds->id];
return NULL;
}
// 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;
int x;
off_t pos;
trak = stream_track(priv, ds);
if (!trak) return 0;
if(trak->samplesize){
// read chunk:
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>=44 && trak->stdata[9]>=1 && char2int(trak->stdata,28)>0){
// stsd version 1 - we have audio compression ratio info:
x/=char2int(trak->stdata,28); // samples/packet
// x*=char2int(trak->stdata,32); // bytes/packet
x*=char2int(trak->stdata,36); // bytes/frame
} else {
if(ds->ss_div && ds->ss_mul){
// workaround for buggy files like 7up-high-traffic-areas.mov,
// with missing stsd v1 header containing compression rate
x/=ds->ss_div; x*=ds->ss_mul; // compression ratio fix ! HACK !
} else {
x*=trak->nchannels;
x*=trak->samplebytes;
}
}
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 */
pos=trak->chunks[trak->pos].pos;
} else {
int frame=trak->pos;
// editlist support:
if(trak->type == MOV_TRAK_VIDEO && trak->editlist_size>=1){
// find the right editlist entry:
if(frame<trak->editlist[trak->editlist_pos].start_frame)
trak->editlist_pos=0;
while(trak->editlist_pos<trak->editlist_size-1 &&
frame>=trak->editlist[trak->editlist_pos+1].start_frame)
++trak->editlist_pos;
if(frame>=trak->editlist[trak->editlist_pos].start_frame+
trak->editlist[trak->editlist_pos].frames) return 0; // EOF
// calc real frame index:
frame-=trak->editlist[trak->editlist_pos].start_frame;
frame+=trak->editlist[trak->editlist_pos].start_sample;
// calc pts:
pts=(float)(trak->samples[frame].pts+
trak->editlist[trak->editlist_pos].pts_offset)/(float)trak->timescale;
} else {
if(frame>=trak->samples_size) return 0; // EOF
pts=(float)trak->samples[frame].pts/(float)trak->timescale;
}
// read sample:
stream_seek(demuxer->stream,trak->samples[frame].pos);
x=trak->samples[frame].size;
pos=trak->samples[frame].pos;
}
if(trak->pos==0 && trak->stream_header_len>0){
// we have to append the stream header...
demux_packet_t* dp=new_demux_packet(x+trak->stream_header_len);
memcpy(dp->buffer,trak->stream_header,trak->stream_header_len);
stream_read(demuxer->stream,dp->buffer+trak->stream_header_len,x);
free(trak->stream_header);
trak->stream_header = NULL;
trak->stream_header_len = 0;
dp->pts=pts;
dp->flags=0;
dp->pos=pos; // FIXME?
ds_add_packet(ds,dp);
} else
ds_read_packet(ds,demuxer->stream,x,pts,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;
mov_track_t* trak;
// printf("MOV seek called %5.3f flag=%d \n",pts,flags);
ds=demuxer->video;
trak = stream_track(priv, ds);
if (trak) {
//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;
trak = stream_track(priv, ds);
if (trak) {
//if(flags&2) pts*=(float)trak->length/(float)trak->timescale;
//if(!(flags&1)) pts+=ds->pts;
ds->pts=mov_seek_track(trak,pts,flags);
}
}
int demux_mov_control(demuxer_t *demuxer, int cmd, void *arg){
mov_track_t* track;
// try the video track
track = stream_track(demuxer->priv, demuxer->video);
if (!track || !track->length)
// otherwise try to get the info from the audio track
track = stream_track(demuxer->priv, demuxer->audio);
if (!track || !track->length)
return DEMUXER_CTRL_DONTKNOW;
switch(cmd) {
case DEMUXER_CTRL_GET_TIME_LENGTH:
if (!track->timescale)
return DEMUXER_CTRL_DONTKNOW;
*((unsigned long *)arg) = track->length / track->timescale;
return DEMUXER_CTRL_OK;
case DEMUXER_CTRL_GET_PERCENT_POS:
{
off_t pos = track->pos;
if (track->durmap_size >= 1)
pos *= track->durmap[0].dur;
*((int *)arg) = (int)(100 * pos / track->length);
return DEMUXER_CTRL_OK;
}
}
return DEMUXER_CTRL_NOTIMPL;
}
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