uint32_t ResourceQueue::EvictBefore(uint64_t aOffset, ErrorResult& aRv)
{
SBR_DEBUG("EvictBefore(%llu)", aOffset);
uint32_t evicted = 0;
while (ResourceItem* item = ResourceAt(0)) {
SBR_DEBUG("item=%p length=%d offset=%llu",
item, item->mData->Length(), mOffset);
if (item->mData->Length() + mOffset >= aOffset) {
if (aOffset <= mOffset) {
break;
}
uint32_t offset = aOffset - mOffset;
mOffset += offset;
evicted += offset;
RefPtr<MediaByteBuffer> data = new MediaByteBuffer;
if (!data->AppendElements(item->mData->Elements() + offset,
item->mData->Length() - offset,
fallible)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return 0;
}
item->mData = data;
break;
}
mOffset += item->mData->Length();
evicted += item->mData->Length();
delete PopFront();
}
return evicted;
}
TEST(ContainerParser, ADTSBlankMedia)
{
nsAutoPtr<ContainerParser> parser;
parser = ContainerParser::CreateForMIMEType(
MediaContainerType(MEDIAMIMETYPE("audio/aac")));
ASSERT_NE(parser, nullptr);
// Audio data should have no gaps.
EXPECT_EQ(parser->GetRoundingError(), 0);
// Test the header only.
RefPtr<MediaByteBuffer> header = make_adts_header();
EXPECT_TRUE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)));
// Test with the correct length of (invalid) frame data.
size_t header_length = header->Length();
size_t data_length = 24;
size_t frame_length = header_length + data_length;
header->AppendElements(data_length);
EXPECT_TRUE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))
<< "Rejected a valid header.";
EXPECT_TRUE(NS_SUCCEEDED(parser->IsMediaSegmentPresent(header)))
<< "Rejected a full (but zeroed) media segment.";
int64_t start = 0;
int64_t end = 0;
// We don't report timestamps from ADTS.
EXPECT_TRUE(
NS_FAILED(parser->ParseStartAndEndTimestamps(header, start, end)));
EXPECT_EQ(start, 0);
EXPECT_EQ(end, 0);
// Verify the parser calculated header and packet data boundaries.
EXPECT_TRUE(parser->HasInitData());
EXPECT_TRUE(parser->HasCompleteInitData());
MediaByteBuffer* init = parser->InitData();
ASSERT_NE(init, nullptr);
EXPECT_EQ(init->Length(), header_length)
<< "Found incorrect init segment length.";
EXPECT_EQ(parser->InitSegmentRange(),
MediaByteRange(0, int64_t(header_length)));
// In ADTS the Media Header is the same as the Media Segment.
MediaByteRange expected_media =
MediaByteRange(int64_t(header_length), int64_t(frame_length));
EXPECT_EQ(parser->MediaHeaderRange(), expected_media);
EXPECT_EQ(parser->MediaSegmentRange(), expected_media);
}
already_AddRefed<MediaByteBuffer>
SourceBuffer::PrepareAppend(const uint8_t* aData, uint32_t aLength, ErrorResult& aRv)
{
typedef TrackBuffersManager::EvictDataResult Result;
if (!IsAttached() || mUpdating) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
// If the HTMLMediaElement.error attribute is not null, then throw an
// InvalidStateError exception and abort these steps.
if (!mMediaSource->GetDecoder() ||
mMediaSource->GetDecoder()->OwnerHasError()) {
MSE_DEBUG("HTMLMediaElement.error is not null");
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
if (mMediaSource->ReadyState() == MediaSourceReadyState::Ended) {
mMediaSource->SetReadyState(MediaSourceReadyState::Open);
}
// Eviction uses a byte threshold. If the buffer is greater than the
// number of bytes then data is evicted.
// TODO: Drive evictions off memory pressure notifications.
// TODO: Consider a global eviction threshold rather than per TrackBuffer.
// Give a chance to the TrackBuffersManager to evict some data if needed.
Result evicted =
mTrackBuffersManager->EvictData(TimeUnit::FromSeconds(mMediaSource->GetDecoder()->GetCurrentTime()),
aLength);
// See if we have enough free space to append our new data.
if (evicted == Result::BUFFER_FULL) {
aRv.Throw(NS_ERROR_DOM_QUOTA_EXCEEDED_ERR);
return nullptr;
}
RefPtr<MediaByteBuffer> data = new MediaByteBuffer();
if (!data->AppendElements(aData, aLength, fallible)) {
aRv.Throw(NS_ERROR_DOM_QUOTA_EXCEEDED_ERR);
return nullptr;
}
return data.forget();
}
TEST(BitWriter, SPS) {
uint8_t sps_pps[] = {0x01, 0x4d, 0x40, 0x0c, 0xff, 0xe1, 0x00, 0x1b, 0x67,
0x4d, 0x40, 0x0c, 0xe8, 0x80, 0x80, 0x9d, 0x80, 0xb5,
0x01, 0x01, 0x01, 0x40, 0x00, 0x00, 0x03, 0x00, 0x40,
0x00, 0x00, 0x0f, 0x03, 0xc5, 0x0a, 0x44, 0x80, 0x01,
0x00, 0x04, 0x68, 0xeb, 0xef, 0x20};
RefPtr<MediaByteBuffer> extraData = new MediaByteBuffer();
extraData->AppendElements(sps_pps, sizeof(sps_pps));
SPSData spsdata1;
bool success = H264::DecodeSPSFromExtraData(extraData, spsdata1);
EXPECT_EQ(success, true);
RefPtr<MediaByteBuffer> extraData2 =
H264::CreateExtraData(0x42, 0xc0, 0x1e, {1280, 720});
SPSData spsdata2;
success = H264::DecodeSPSFromExtraData(extraData2, spsdata2);
EXPECT_EQ(success, true);
}
/* static */ bool
H264::DecodeSPSFromExtraData(const mozilla::MediaByteBuffer* aExtraData, SPSData& aDest)
{
if (!AnnexB::HasSPS(aExtraData)) {
return false;
}
ByteReader reader(aExtraData);
if (!reader.Read(5)) {
return false;
}
if (!(reader.ReadU8() & 0x1f)) {
// No SPS.
reader.DiscardRemaining();
return false;
}
uint16_t length = reader.ReadU16();
if ((reader.PeekU8() & 0x1f) != 7) {
// Not a SPS NAL type.
reader.DiscardRemaining();
return false;
}
const uint8_t* ptr = reader.Read(length);
if (!ptr) {
return false;
}
reader.DiscardRemaining();
RefPtr<mozilla::MediaByteBuffer> rawNAL = new mozilla::MediaByteBuffer;
rawNAL->AppendElements(ptr, length);
RefPtr<mozilla::MediaByteBuffer> sps = DecodeNALUnit(rawNAL);
if (!sps) {
return false;
}
return DecodeSPS(sps, aDest);
}
TEST(stagefright_MP4Metadata, EmptyCTTS)
{
RefPtr<MediaByteBuffer> buffer = new MediaByteBuffer(media_libstagefright_gtest_video_init_mp4_len);
buffer->AppendElements(media_libstagefright_gtest_video_init_mp4, media_libstagefright_gtest_video_init_mp4_len);
RefPtr<BufferStream> stream = new BufferStream(buffer);
EXPECT_TRUE(MP4Metadata::HasCompleteMetadata(stream));
RefPtr<MediaByteBuffer> metadataBuffer = MP4Metadata::Metadata(stream);
EXPECT_TRUE(metadataBuffer);
MP4Metadata metadata(stream);
EXPECT_EQ(1u, metadata.GetNumberTracks(TrackInfo::kVideoTrack));
mozilla::UniquePtr<mozilla::TrackInfo> track =
metadata.GetTrackInfo(TrackInfo::kVideoTrack, 0);
EXPECT_TRUE(track != nullptr);
// We can seek anywhere in any MPEG4.
EXPECT_TRUE(metadata.CanSeek());
EXPECT_FALSE(metadata.Crypto().valid);
}
already_AddRefed<MediaByteBuffer>
SourceBuffer::PrepareAppend(const uint8_t* aData, uint32_t aLength, ErrorResult& aRv)
{
typedef SourceBufferContentManager::EvictDataResult Result;
if (!IsAttached() || mUpdating) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
// If the HTMLMediaElement.error attribute is not null, then throw an
// InvalidStateError exception and abort these steps.
if (!mMediaSource->GetDecoder() ||
mMediaSource->GetDecoder()->IsEndedOrShutdown()) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
if (mMediaSource->ReadyState() == MediaSourceReadyState::Ended) {
mMediaSource->SetReadyState(MediaSourceReadyState::Open);
}
// Eviction uses a byte threshold. If the buffer is greater than the
// number of bytes then data is evicted. The time range for this
// eviction is reported back to the media source. It will then
// evict data before that range across all SourceBuffers it knows
// about.
// TODO: Make the eviction threshold smaller for audio-only streams.
// TODO: Drive evictions off memory pressure notifications.
// TODO: Consider a global eviction threshold rather than per TrackBuffer.
TimeUnit newBufferStartTime;
// Attempt to evict the amount of data we are about to add by lowering the
// threshold.
uint32_t toEvict =
(mEvictionThreshold > aLength) ? mEvictionThreshold - aLength : aLength;
Result evicted =
mContentManager->EvictData(TimeUnit::FromSeconds(mMediaSource->GetDecoder()->GetCurrentTime()),
toEvict, &newBufferStartTime);
if (evicted == Result::DATA_EVICTED) {
MSE_DEBUG("AppendData Evict; current buffered start=%f",
GetBufferedStart());
// We notify that we've evicted from the time range 0 through to
// the current start point.
mMediaSource->NotifyEvicted(0.0, newBufferStartTime.ToSeconds());
}
// See if we have enough free space to append our new data.
// As we can only evict once we have playable data, we must give a chance
// to the DASH player to provide a complete media segment.
if (aLength > mEvictionThreshold || evicted == Result::BUFFER_FULL) {
aRv.Throw(NS_ERROR_DOM_QUOTA_EXCEEDED_ERR);
return nullptr;
}
RefPtr<MediaByteBuffer> data = new MediaByteBuffer();
if (!data->AppendElements(aData, aLength, fallible)) {
aRv.Throw(NS_ERROR_DOM_QUOTA_EXCEEDED_ERR);
return nullptr;
}
return data.forget();
}
TEST(ContainerParser, ADTSHeader)
{
nsAutoPtr<ContainerParser> parser;
parser = ContainerParser::CreateForMIMEType(
MediaContainerType(MEDIAMIMETYPE("audio/aac")));
ASSERT_NE(parser, nullptr);
// Audio data should have no gaps.
EXPECT_EQ(parser->GetRoundingError(), 0);
// Test a valid header.
RefPtr<MediaByteBuffer> header = make_adts_header();
EXPECT_TRUE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)));
// Test variations.
uint8_t save = header->ElementAt(1);
for (uint8_t i = 1; i < 3; ++i) {
// Set non-zero layer.
header->ReplaceElementAt(1, (header->ElementAt(1) & 0xf9) | (i << 1));
EXPECT_FALSE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))
<< "Accepted non-zero layer in header.";
}
header->ReplaceElementAt(1, save);
save = header->ElementAt(2);
header->ReplaceElementAt(2, (header->ElementAt(2) & 0x3b) | (15 << 2));
EXPECT_FALSE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))
<< "Accepted explicit frequency in header.";
header->ReplaceElementAt(2, save);
// Test a short header.
header->SetLength(6);
EXPECT_FALSE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))
<< "Accepted too-short header.";
EXPECT_FALSE(NS_SUCCEEDED(parser->IsMediaSegmentPresent(header)))
<< "Found media segment when there was just a partial header.";
// Test a header with short data.
header = make_adts_header();
header->AppendElements(1);
EXPECT_TRUE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))
<< "Rejected a valid header.";
EXPECT_TRUE(NS_SUCCEEDED(parser->IsMediaSegmentPresent(header)))
<< "Rejected a one-byte media segment.";
// Test parse results.
header = make_adts_header();
EXPECT_FALSE(NS_SUCCEEDED(parser->IsMediaSegmentPresent(header)))
<< "Found media segment when there was just a header.";
int64_t start = 0;
int64_t end = 0;
EXPECT_TRUE(
NS_FAILED(parser->ParseStartAndEndTimestamps(header, start, end)));
EXPECT_TRUE(parser->HasInitData());
EXPECT_TRUE(parser->HasCompleteInitData());
MediaByteBuffer* init = parser->InitData();
ASSERT_NE(init, nullptr);
EXPECT_EQ(init->Length(), header->Length());
EXPECT_EQ(parser->InitSegmentRange(),
MediaByteRange(0, int64_t(header->Length())));
// Media segment range should be empty here.
EXPECT_EQ(parser->MediaHeaderRange(), MediaByteRange());
EXPECT_EQ(parser->MediaSegmentRange(), MediaByteRange());
}
