nsresult
TrackExtendsBox::Generate(uint32_t* aBoxSize)
{
track_ID = mControl->GetTrackID(mTrackType);
if (mTrackType == Audio_Track) {
default_sample_description_index = 1;
default_sample_duration = mMeta.mAudMeta->FrameDuration;
default_sample_size = mMeta.mAudMeta->FrameSize;
default_sample_flags = set_sample_flags(1);
} else if (mTrackType == Video_Track) {
default_sample_description_index = 1;
default_sample_duration =
mMeta.mVidMeta->VideoFrequency / mMeta.mVidMeta->FrameRate;
default_sample_size = 0;
default_sample_flags = set_sample_flags(0);
} else {
MOZ_ASSERT(0);
return NS_ERROR_FAILURE;
}
size += sizeof(track_ID) +
sizeof(default_sample_description_index) +
sizeof(default_sample_duration) +
sizeof(default_sample_size) +
sizeof(default_sample_flags);
*aBoxSize = size;
return NS_OK;
}
uint32_t
TrackRunBox::fillSampleTable()
{
uint32_t table_size = 0;
nsresult rv;
nsTArray<nsRefPtr<EncodedFrame>> frames;
FragmentBuffer* frag = mControl->GetFragment(mTrackType);
rv = frag->GetFirstFragment(frames);
if (NS_FAILED(rv)) {
return 0;
}
uint32_t len = frames.Length();
sample_info_table = new tbl[len];
for (uint32_t i = 0; i < len; i++) {
sample_info_table[i].sample_duration = 0;
sample_info_table[i].sample_size = frames.ElementAt(i)->GetFrameData().Length();
mAllSampleSize += sample_info_table[i].sample_size;
table_size += sizeof(uint32_t);
if (flags.to_ulong() & flags_sample_flags_present) {
sample_info_table[i].sample_flags =
set_sample_flags(
(frames.ElementAt(i)->GetFrameType() == EncodedFrame::I_FRAME));
table_size += sizeof(uint32_t);
} else {
sample_info_table[i].sample_flags = 0;
}
sample_info_table[i].sample_composition_time_offset = 0;
}
return table_size;
}
nsresult
TrackExtendsBox::Generate(uint32_t* aBoxSize)
{
track_ID = (mTrackType == Audio_Track ?
mControl->GetTrackID(mAudioMeta->GetKind()) :
mControl->GetTrackID(mVideoMeta->GetKind()));
if (mTrackType == Audio_Track) {
default_sample_description_index = 1;
default_sample_duration = mAudioMeta->GetAudioFrameDuration();
default_sample_size = mAudioMeta->GetAudioFrameSize();
default_sample_flags = set_sample_flags(1);
} else if (mTrackType == Video_Track) {
default_sample_description_index = 1;
// Video meta data has assigned framerate, it implies that this video's
// frame rate should be fixed.
if (mVideoMeta->GetVideoFrameRate()) {
default_sample_duration =
mVideoMeta->GetVideoClockRate() / mVideoMeta->GetVideoFrameRate();
}
default_sample_size = 0;
default_sample_flags = set_sample_flags(0);
} else {
MOZ_ASSERT(0);
return NS_ERROR_FAILURE;
}
size += sizeof(track_ID) +
sizeof(default_sample_description_index) +
sizeof(default_sample_duration) +
sizeof(default_sample_size) +
sizeof(default_sample_flags);
*aBoxSize = size;
return NS_OK;
}
uint32_t
TrackRunBox::fillSampleTable()
{
uint32_t table_size = 0;
nsresult rv;
nsTArray<RefPtr<EncodedFrame>> frames;
FragmentBuffer* frag = mControl->GetFragment(mTrackType);
rv = frag->GetFirstFragment(frames);
if (NS_FAILED(rv)) {
return 0;
}
uint32_t len = frames.Length();
sample_info_table = MakeUnique<tbl[]>(len);
// Create sample table according to 14496-12 8.8.8.2.
for (uint32_t i = 0; i < len; i++) {
// Sample size.
sample_info_table[i].sample_size = 0;
if (flags.to_ulong() & flags_sample_size_present) {
sample_info_table[i].sample_size = frames.ElementAt(i)->GetFrameData().Length();
mAllSampleSize += sample_info_table[i].sample_size;
table_size += sizeof(uint32_t);
}
// Sample flags.
sample_info_table[i].sample_flags = 0;
if (flags.to_ulong() & flags_sample_flags_present) {
sample_info_table[i].sample_flags =
set_sample_flags(
(frames.ElementAt(i)->GetFrameType() == EncodedFrame::AVC_I_FRAME));
table_size += sizeof(uint32_t);
}
// Sample duration.
sample_info_table[i].sample_duration = 0;
if (flags.to_ulong() & flags_sample_duration_present) {
// Calculate each frame's duration, it is decided by "current frame
// timestamp - last frame timestamp".
uint64_t frame_time = 0;
if (i == 0) {
frame_time = frames.ElementAt(i)->GetTimeStamp() -
frag->GetLastFragmentLastFrameTime();
} else {
frame_time = frames.ElementAt(i)->GetTimeStamp() -
frames.ElementAt(i - 1)->GetTimeStamp();
// Keep the last frame time of current fagment, it will be used to calculate
// the first frame duration of next fragment.
if ((len - 1) == i) {
frag->SetLastFragmentLastFrameTime(frames.ElementAt(i)->GetTimeStamp());
}
}
// In TrackRunBox, there should be exactly one type, either audio or video.
MOZ_ASSERT((mTrackType & Video_Track) ^ (mTrackType & Audio_Track));
sample_info_table[i].sample_duration = (mTrackType & Video_Track ?
frame_time * mVideoMeta->GetVideoClockRate() / USECS_PER_S :
frame_time * mAudioMeta->GetAudioSampleRate() / USECS_PER_S);
table_size += sizeof(uint32_t);
}
sample_info_table[i].sample_composition_time_offset = 0;
}
return table_size;
}
