void gf_media_get_sample_average_infos(GF_ISOFile *file, u32 Track, u32 *avgSize, u32 *MaxSize, u32 *TimeDelta, u32 *maxCTSDelta, u32 *const_duration, u32 *bandwidth)
{
	u32 i, count, ts_diff;
	u64 prevTS, tdelta;
	Double bw;
	GF_ISOSample *samp;

	*avgSize = *MaxSize = 0;
	*TimeDelta = 0;
	*maxCTSDelta = 0;
	bw = 0;
	prevTS = 0;
	tdelta = 0;

	count = gf_isom_get_sample_count(file, Track);
	if (!count) return;
	*const_duration = 0;

	for (i=0; i<count; i++) {
		samp = gf_isom_get_sample_info(file, Track, i+1, NULL, NULL);
		if (!samp) break;
		
		//get the size
		*avgSize += samp->dataLength;
		if (*MaxSize < samp->dataLength) *MaxSize = samp->dataLength;
		ts_diff = (u32) (samp->DTS+samp->CTS_Offset - prevTS);
		//get the time
		tdelta += ts_diff;

		if (i==1) {
			*const_duration = ts_diff;
		} else if ( (i<count-1) && (*const_duration != ts_diff) ) {
			*const_duration = 0;
		}

		prevTS = samp->DTS+samp->CTS_Offset;
		bw += 8*samp->dataLength;

		//get the CTS delta
		if ((samp->CTS_Offset>=0) && ((u32)samp->CTS_Offset > *maxCTSDelta))
			*maxCTSDelta = samp->CTS_Offset;
		gf_isom_sample_del(&samp);
	}
	if (count>1) *TimeDelta = (u32) (tdelta/ (count-1) );
	else *TimeDelta = (u32) tdelta;
	*avgSize /= count;
	bw *= gf_isom_get_media_timescale(file, Track);
	bw /= (s64) gf_isom_get_media_duration(file, Track);
	bw /= 1000;
	(*bandwidth) = (u32) (bw+0.5);

	//delta is NOT an average, we need to know exactly how many bits are
	//needed to encode CTS-DTS for ANY samples
}
void gf_media_get_sample_average_infos(GF_ISOFile *file, u32 Track, u32 *avgSize, u32 *MaxSize, u32 *TimeDelta, u32 *maxCTSDelta, u32 *const_duration, u32 *bandwidth)
{
	u32 i, count, ts_diff;
	u64 prevTS, tdelta;
	Double bw;
	GF_ISOSample *samp;

	*avgSize = *MaxSize = 0;
	*TimeDelta = 0;
	*maxCTSDelta = 0;
	bw = 0;
	prevTS = 0;
	tdelta = 0;

	count = gf_isom_get_sample_count(file, Track);
	if (!count) return;
	*const_duration = 0;

	for (i=0; i<count; i++) {
		samp = gf_isom_get_sample_info(file, Track, i+1, NULL, NULL);
		if (!samp) break;
		
		 
		*avgSize += samp->dataLength;
		if (*MaxSize < samp->dataLength) *MaxSize = samp->dataLength;
		ts_diff = (u32) (samp->DTS+samp->CTS_Offset - prevTS);
		 
		tdelta += ts_diff;

		if (i==1) {
			*const_duration = ts_diff;
		} else if ( (i<count-1) && (*const_duration != ts_diff) ) {
			*const_duration = 0;
		}

		prevTS = samp->DTS+samp->CTS_Offset;
		bw += 8*samp->dataLength;

		 
		if ((samp->CTS_Offset>=0) && ((u32)samp->CTS_Offset > *maxCTSDelta))
			*maxCTSDelta = samp->CTS_Offset;
		gf_isom_sample_del(&samp);
	}
	if (count>1) *TimeDelta = (u32) (tdelta/ (count-1) );
	else *TimeDelta = (u32) tdelta;
	*avgSize /= count;
	bw *= gf_isom_get_media_timescale(file, Track);
	bw /= (s64) gf_isom_get_media_duration(file, Track);
	bw /= 1000;
	(*bandwidth) = (u32) (bw+0.5);

	 
	 
}