404 lines
15 KiB
C++
404 lines
15 KiB
C++
// Copyright 2016 Google LLC. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include <packager/media/formats/mp2t/ts_segmenter.h>
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include <packager/media/base/audio_stream_info.h>
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#include <packager/media/base/video_stream_info.h>
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#include <packager/media/event/mock_muxer_listener.h>
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#include <packager/media/formats/mp2t/pes_packet.h>
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#include <packager/media/formats/mp2t/program_map_table_writer.h>
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#include <packager/status/status_test_util.h>
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namespace shaka {
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namespace media {
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namespace mp2t {
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using ::testing::InSequence;
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using ::testing::Return;
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using ::testing::Sequence;
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using ::testing::StrEq;
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using ::testing::_;
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namespace {
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// All data here is bogus. They are used to create VideoStreamInfo but the
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// actual values don't matter at all.
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const bool kIsKeyFrame = true;
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const Codec kH264Codec = Codec::kCodecH264;
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const uint8_t kExtraData[] = {
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0x00,
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};
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const int kTrackId = 0;
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const int32_t kZeroTransportStreamTimestampOffset = 0;
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const int32_t kTimeScale = 90000;
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const int64_t kDuration = 180000;
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const char kCodecString[] = "avc1";
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const char kLanguage[] = "eng";
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const uint32_t kWidth = 1280;
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const uint32_t kHeight = 720;
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const uint32_t kPixelWidth = 1;
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const uint32_t kPixelHeight = 1;
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const uint8_t kTransferCharacteristics = 0;
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const uint16_t kTrickPlayFactor = 1;
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const uint8_t kNaluLengthSize = 1;
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const bool kIsEncrypted = false;
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const uint8_t kAnyData[] = {
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0x01, 0x0F, 0x3C,
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};
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class MockPesPacketGenerator : public PesPacketGenerator {
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public:
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MockPesPacketGenerator()
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: PesPacketGenerator(kZeroTransportStreamTimestampOffset) {}
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MOCK_METHOD1(Initialize, bool(const StreamInfo& info));
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MOCK_METHOD1(PushSample, bool(const MediaSample& sample));
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MOCK_METHOD0(NumberOfReadyPesPackets, size_t());
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// Hack found at the URL below for mocking methods that return
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// std::unique_ptr.
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// https://groups.google.com/a/chromium.org/forum/#!topic/chromium-dev/01sDxsJ1OYw
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MOCK_METHOD0(GetNextPesPacketMock, PesPacket*());
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std::unique_ptr<PesPacket> GetNextPesPacket() override {
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return std::unique_ptr<PesPacket>(GetNextPesPacketMock());
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}
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MOCK_METHOD0(Flush, bool());
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};
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class MockTsWriter : public TsWriter {
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public:
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MockTsWriter()
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: TsWriter(std::unique_ptr<ProgramMapTableWriter>(
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// Create a bogus pmt writer, which we don't really care.
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new VideoProgramMapTableWriter(kUnknownCodec))) {}
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MOCK_METHOD1(NewSegment, bool(BufferWriter* buffer_writer));
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MOCK_METHOD0(SignalEncrypted, void());
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MOCK_METHOD0(FinalizeSegment, bool());
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// Similar to the hack above but takes a std::unique_ptr.
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MOCK_METHOD2(AddPesPacketMock, bool(PesPacket* pes_packet,
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BufferWriter* buffer_writer));
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bool AddPesPacket(std::unique_ptr<PesPacket> pes_packet,
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BufferWriter* buffer_writer) override {
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buffer_writer->AppendArray(kAnyData, std::size(kAnyData));
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// No need to keep the pes packet around for the current tests.
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return AddPesPacketMock(pes_packet.get(), buffer_writer);
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}
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};
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} // namespace
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class TsSegmenterTest : public ::testing::Test {
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protected:
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void SetUp() override {
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mock_ts_writer_.reset(new MockTsWriter());
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mock_pes_packet_generator_.reset(new MockPesPacketGenerator());
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}
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std::unique_ptr<MockTsWriter> mock_ts_writer_;
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std::unique_ptr<MockPesPacketGenerator> mock_pes_packet_generator_;
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};
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TEST_F(TsSegmenterTest, Initialize) {
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std::shared_ptr<VideoStreamInfo> stream_info(new VideoStreamInfo(
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kTrackId, kTimeScale, kDuration, kH264Codec,
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H26xStreamFormat::kAnnexbByteStream, kCodecString, kExtraData,
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std::size(kExtraData), kWidth, kHeight, kPixelWidth, kPixelHeight,
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kTransferCharacteristics, kTrickPlayFactor, kNaluLengthSize, kLanguage,
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kIsEncrypted));
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MuxerOptions options;
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options.segment_template = "file$Number$.ts";
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TsSegmenter segmenter(options, nullptr);
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EXPECT_CALL(*mock_pes_packet_generator_, Initialize(_))
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.WillOnce(Return(true));
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segmenter.InjectPesPacketGeneratorForTesting(
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std::move(mock_pes_packet_generator_));
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EXPECT_OK(segmenter.Initialize(*stream_info));
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}
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TEST_F(TsSegmenterTest, AddSample) {
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std::shared_ptr<VideoStreamInfo> stream_info(new VideoStreamInfo(
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kTrackId, kTimeScale, kDuration, kH264Codec,
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H26xStreamFormat::kAnnexbByteStream, kCodecString, kExtraData,
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std::size(kExtraData), kWidth, kHeight, kPixelWidth, kPixelHeight,
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kTransferCharacteristics, kTrickPlayFactor, kNaluLengthSize, kLanguage,
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kIsEncrypted));
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MuxerOptions options;
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options.segment_template = "file$Number$.ts";
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TsSegmenter segmenter(options, nullptr);
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EXPECT_CALL(*mock_pes_packet_generator_, Initialize(_))
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.WillOnce(Return(true));
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std::shared_ptr<MediaSample> sample =
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MediaSample::CopyFrom(kAnyData, std::size(kAnyData), kIsKeyFrame);
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Sequence writer_sequence;
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EXPECT_CALL(*mock_ts_writer_, NewSegment(_))
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.InSequence(writer_sequence)
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.WillOnce(Return(true));
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EXPECT_CALL(*mock_pes_packet_generator_, PushSample(_))
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.WillOnce(Return(true));
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Sequence ready_pes_sequence;
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(1u));
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(0u));
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EXPECT_CALL(*mock_ts_writer_, AddPesPacketMock(_, _))
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.WillOnce(Return(true));
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// The pointer is released inside the segmenter.
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EXPECT_CALL(*mock_pes_packet_generator_, GetNextPesPacketMock())
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.WillOnce(Return(new PesPacket()));
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segmenter.InjectPesPacketGeneratorForTesting(
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std::move(mock_pes_packet_generator_));
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EXPECT_OK(segmenter.Initialize(*stream_info));
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segmenter.InjectTsWriterForTesting(std::move(mock_ts_writer_));
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EXPECT_OK(segmenter.AddSample(*sample));
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}
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// This will add one sample then finalize segment then add another sample.
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TEST_F(TsSegmenterTest, PassedSegmentDuration) {
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// Use something significantly smaller than 90000 to check that the scaling is
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// done correctly in the segmenter.
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const int32_t kInputTimescale = 1001;
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std::shared_ptr<VideoStreamInfo> stream_info(new VideoStreamInfo(
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kTrackId, kInputTimescale, kDuration, kH264Codec,
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H26xStreamFormat::kAnnexbByteStream, kCodecString, kExtraData,
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std::size(kExtraData), kWidth, kHeight, kPixelWidth, kPixelHeight,
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kTransferCharacteristics, kTrickPlayFactor, kNaluLengthSize, kLanguage,
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kIsEncrypted));
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MuxerOptions options;
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options.segment_template = "memory://file$Number$.ts";
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MockMuxerListener mock_listener;
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TsSegmenter segmenter(options, &mock_listener);
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const int32_t kFirstPts = 1000;
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EXPECT_CALL(*mock_pes_packet_generator_, Initialize(_))
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.WillOnce(Return(true));
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std::shared_ptr<MediaSample> sample1 =
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MediaSample::CopyFrom(kAnyData, std::size(kAnyData), kIsKeyFrame);
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sample1->set_duration(kInputTimescale * 11);
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std::shared_ptr<MediaSample> sample2 =
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MediaSample::CopyFrom(kAnyData, std::size(kAnyData), kIsKeyFrame);
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// Doesn't really matter how long this is.
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sample2->set_duration(kInputTimescale * 7);
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Sequence writer_sequence;
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EXPECT_CALL(*mock_ts_writer_, NewSegment(_))
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.InSequence(writer_sequence)
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.WillOnce(Return(true));
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EXPECT_CALL(*mock_pes_packet_generator_, PushSample(_))
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.Times(2)
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.WillRepeatedly(Return(true));
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Sequence ready_pes_sequence;
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// First AddSample().
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(1u));
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(0u));
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// When Flush() is called, inside second AddSample().
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(0u));
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// Still inside AddSample() but after Flush().
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(1u));
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(0u));
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EXPECT_CALL(*mock_pes_packet_generator_, Flush())
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.WillOnce(Return(true));
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EXPECT_CALL(*mock_ts_writer_, AddPesPacketMock(_, _))
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.Times(2)
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.WillRepeatedly(Return(true));
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// The pointers are released inside the segmenter.
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Sequence pes_packet_sequence;
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EXPECT_CALL(*mock_pes_packet_generator_, GetNextPesPacketMock())
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.InSequence(pes_packet_sequence)
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.WillOnce(Return(new PesPacket));
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EXPECT_CALL(*mock_pes_packet_generator_, GetNextPesPacketMock())
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.InSequence(pes_packet_sequence)
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.WillOnce(Return(new PesPacket()));
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segmenter.InjectPesPacketGeneratorForTesting(
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std::move(mock_pes_packet_generator_));
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EXPECT_OK(segmenter.Initialize(*stream_info));
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segmenter.InjectTsWriterForTesting(std::move(mock_ts_writer_));
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EXPECT_OK(segmenter.AddSample(*sample1));
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EXPECT_OK(segmenter.FinalizeSegment(kFirstPts, sample1->duration()));
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EXPECT_OK(segmenter.AddSample(*sample2));
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}
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// Finalize right after Initialize(). The writer will not be initialized.
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TEST_F(TsSegmenterTest, InitializeThenFinalize) {
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std::shared_ptr<VideoStreamInfo> stream_info(new VideoStreamInfo(
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kTrackId, kTimeScale, kDuration, kH264Codec,
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H26xStreamFormat::kAnnexbByteStream, kCodecString, kExtraData,
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std::size(kExtraData), kWidth, kHeight, kPixelWidth, kPixelHeight,
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kTransferCharacteristics, kTrickPlayFactor, kNaluLengthSize, kLanguage,
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kIsEncrypted));
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MuxerOptions options;
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options.segment_template = "file$Number$.ts";
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TsSegmenter segmenter(options, nullptr);
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EXPECT_CALL(*mock_pes_packet_generator_, Initialize(_))
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.WillOnce(Return(true));
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EXPECT_CALL(*mock_pes_packet_generator_, Flush()).Times(0);
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ON_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.WillByDefault(Return(0));
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segmenter.InjectPesPacketGeneratorForTesting(
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std::move(mock_pes_packet_generator_));
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EXPECT_OK(segmenter.Initialize(*stream_info));
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EXPECT_OK(segmenter.Finalize());
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}
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// Verify the "normal" case where samples have been added and the writer has
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// been initialized.
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// The test does not really add any samples but instead simulates an initialized
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// writer with a mock.
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TEST_F(TsSegmenterTest, FinalizeSegment) {
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std::shared_ptr<VideoStreamInfo> stream_info(new VideoStreamInfo(
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kTrackId, kTimeScale, kDuration, kH264Codec,
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H26xStreamFormat::kAnnexbByteStream, kCodecString, kExtraData,
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std::size(kExtraData), kWidth, kHeight, kPixelWidth, kPixelHeight,
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kTransferCharacteristics, kTrickPlayFactor, kNaluLengthSize, kLanguage,
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kIsEncrypted));
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MuxerOptions options;
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options.segment_template = "file$Number$.ts";
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TsSegmenter segmenter(options, nullptr);
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EXPECT_CALL(*mock_pes_packet_generator_, Initialize(_))
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.WillOnce(Return(true));
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InSequence s;
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EXPECT_CALL(*mock_pes_packet_generator_, Flush()).WillOnce(Return(true));
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.WillOnce(Return(0u));
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segmenter.InjectPesPacketGeneratorForTesting(
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std::move(mock_pes_packet_generator_));
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EXPECT_OK(segmenter.Initialize(*stream_info));
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segmenter.InjectTsWriterForTesting(std::move(mock_ts_writer_));
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EXPECT_OK(segmenter.FinalizeSegment(0, 100 /* arbitrary duration*/));
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}
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TEST_F(TsSegmenterTest, EncryptedSample) {
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std::shared_ptr<VideoStreamInfo> stream_info(new VideoStreamInfo(
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kTrackId, kTimeScale, kDuration, kH264Codec,
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H26xStreamFormat::kAnnexbByteStream, kCodecString, kExtraData,
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std::size(kExtraData), kWidth, kHeight, kPixelWidth, kPixelHeight,
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kTransferCharacteristics, kTrickPlayFactor, kNaluLengthSize, kLanguage,
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kIsEncrypted));
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MuxerOptions options;
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options.segment_template = "memory://file$Number$.ts";
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MockMuxerListener mock_listener;
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TsSegmenter segmenter(options, &mock_listener);
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ON_CALL(*mock_ts_writer_, NewSegment(_)).WillByDefault(Return(true));
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ON_CALL(*mock_ts_writer_, AddPesPacketMock(_,_)).WillByDefault(Return(true));
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ON_CALL(*mock_pes_packet_generator_, Initialize(_))
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.WillByDefault(Return(true));
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ON_CALL(*mock_pes_packet_generator_, Flush()).WillByDefault(Return(true));
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std::shared_ptr<MediaSample> sample1 =
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MediaSample::CopyFrom(kAnyData, std::size(kAnyData), kIsKeyFrame);
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sample1->set_duration(kTimeScale * 2);
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std::shared_ptr<MediaSample> sample2 =
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MediaSample::CopyFrom(kAnyData, std::size(kAnyData), kIsKeyFrame);
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sample2->set_duration(kTimeScale * 3);
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EXPECT_CALL(*mock_pes_packet_generator_, PushSample(_))
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.Times(2)
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.WillRepeatedly(Return(true));
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Sequence ready_pes_sequence;
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// First AddSample().
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(1u));
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(0u));
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// When Flush() is called, inside second AddSample().
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(0u));
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// Still inside AddSample() but after Flush().
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(1u));
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EXPECT_CALL(*mock_pes_packet_generator_, NumberOfReadyPesPackets())
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.InSequence(ready_pes_sequence)
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.WillOnce(Return(0u));
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EXPECT_CALL(*mock_ts_writer_, AddPesPacketMock(_, _))
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.Times(2)
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.WillRepeatedly(Return(true));
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// The pointers are released inside the segmenter.
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Sequence pes_packet_sequence;
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EXPECT_CALL(*mock_pes_packet_generator_, GetNextPesPacketMock())
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.InSequence(pes_packet_sequence)
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.WillOnce(Return(new PesPacket()));
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EXPECT_CALL(*mock_pes_packet_generator_, GetNextPesPacketMock())
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.InSequence(pes_packet_sequence)
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.WillOnce(Return(new PesPacket()));
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MockTsWriter* mock_ts_writer_raw = mock_ts_writer_.get();
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segmenter.InjectPesPacketGeneratorForTesting(
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std::move(mock_pes_packet_generator_));
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EXPECT_OK(segmenter.Initialize(*stream_info));
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segmenter.InjectTsWriterForTesting(std::move(mock_ts_writer_));
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EXPECT_OK(segmenter.AddSample(*sample1));
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EXPECT_OK(segmenter.FinalizeSegment(1, sample1->duration()));
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// Signal encrypted if sample is encrypted.
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EXPECT_CALL(*mock_ts_writer_raw, SignalEncrypted());
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sample2->set_is_encrypted(true);
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EXPECT_OK(segmenter.AddSample(*sample2));
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}
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} // namespace mp2t
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} // namespace media
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} // namespace shaka
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