| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/at_exit.h" |
| #include "base/bind.h" |
| #include "base/command_line.h" |
| #include "base/file_util.h" |
| #include "base/files/memory_mapped_file.h" |
| #include "base/memory/scoped_vector.h" |
| #include "base/numerics/safe_conversions.h" |
| #include "base/process/process.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_split.h" |
| #include "base/time/time.h" |
| #include "content/common/gpu/media/video_accelerator_unittest_helpers.h" |
| #include "media/base/bind_to_current_loop.h" |
| #include "media/base/bitstream_buffer.h" |
| #include "media/base/test_data_util.h" |
| #include "media/filters/h264_parser.h" |
| #include "media/video/video_encode_accelerator.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| #if defined(USE_X11) |
| #include "ui/gfx/x/x11_types.h" |
| #endif |
| |
| #if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL) |
| #include "content/common/gpu/media/v4l2_video_encode_accelerator.h" |
| #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY) && defined(USE_X11) |
| #include "content/common/gpu/media/vaapi_video_encode_accelerator.h" |
| #else |
| #error The VideoEncodeAcceleratorUnittest is not supported on this platform. |
| #endif |
| |
| using media::VideoEncodeAccelerator; |
| |
| namespace content { |
| namespace { |
| |
| const media::VideoFrame::Format kInputFormat = media::VideoFrame::I420; |
| |
| // Arbitrarily chosen to add some depth to the pipeline. |
| const unsigned int kNumOutputBuffers = 4; |
| const unsigned int kNumExtraInputFrames = 4; |
| // Maximum delay between requesting a keyframe and receiving one, in frames. |
| // Arbitrarily chosen as a reasonable requirement. |
| const unsigned int kMaxKeyframeDelay = 4; |
| // Value to use as max frame number for keyframe detection. |
| const unsigned int kMaxFrameNum = |
| std::numeric_limits<unsigned int>::max() - kMaxKeyframeDelay; |
| // Default initial bitrate. |
| const uint32 kDefaultBitrate = 2000000; |
| // Default ratio of requested_subsequent_bitrate to initial_bitrate |
| // (see test parameters below) if one is not provided. |
| const double kDefaultSubsequentBitrateRatio = 2.0; |
| // Default initial framerate. |
| const uint32 kDefaultFramerate = 30; |
| // Default ratio of requested_subsequent_framerate to initial_framerate |
| // (see test parameters below) if one is not provided. |
| const double kDefaultSubsequentFramerateRatio = 0.1; |
| // Tolerance factor for how encoded bitrate can differ from requested bitrate. |
| const double kBitrateTolerance = 0.1; |
| // Minimum required FPS throughput for the basic performance test. |
| const uint32 kMinPerfFPS = 30; |
| // Minimum (arbitrary) number of frames required to enforce bitrate requirements |
| // over. Streams shorter than this may be too short to realistically require |
| // an encoder to be able to converge to the requested bitrate over. |
| // The input stream will be looped as many times as needed in bitrate tests |
| // to reach at least this number of frames before calculating final bitrate. |
| const unsigned int kMinFramesForBitrateTests = 300; |
| |
| // The syntax of multiple test streams is: |
| // test-stream1;test-stream2;test-stream3 |
| // The syntax of each test stream is: |
| // "in_filename:width:height:out_filename:requested_bitrate:requested_framerate |
| // :requested_subsequent_bitrate:requested_subsequent_framerate" |
| // - |in_filename| must be an I420 (YUV planar) raw stream |
| // (see http://www.fourcc.org/yuv.php#IYUV). |
| // - |width| and |height| are in pixels. |
| // - |profile| to encode into (values of media::VideoCodecProfile). |
| // - |out_filename| filename to save the encoded stream to (optional). |
| // Output stream is saved for the simple encode test only. |
| // Further parameters are optional (need to provide preceding positional |
| // parameters if a specific subsequent parameter is required): |
| // - |requested_bitrate| requested bitrate in bits per second. |
| // - |requested_framerate| requested initial framerate. |
| // - |requested_subsequent_bitrate| bitrate to switch to in the middle of the |
| // stream. |
| // - |requested_subsequent_framerate| framerate to switch to in the middle |
| // of the stream. |
| // Bitrate is only forced for tests that test bitrate. |
| const char* g_default_in_filename = "bear_320x192_40frames.yuv"; |
| const char* g_default_in_parameters = ":320:192:1:out.h264:200000"; |
| base::FilePath::StringType* g_test_stream_data; |
| |
| struct TestStream { |
| TestStream() |
| : requested_bitrate(0), |
| requested_framerate(0), |
| requested_subsequent_bitrate(0), |
| requested_subsequent_framerate(0) {} |
| ~TestStream() {} |
| |
| gfx::Size size; |
| base::MemoryMappedFile input_file; |
| media::VideoCodecProfile requested_profile; |
| std::string out_filename; |
| unsigned int requested_bitrate; |
| unsigned int requested_framerate; |
| unsigned int requested_subsequent_bitrate; |
| unsigned int requested_subsequent_framerate; |
| }; |
| |
| // Parse |data| into its constituent parts, set the various output fields |
| // accordingly, read in video stream, and store them to |test_streams|. |
| static void ParseAndReadTestStreamData(const base::FilePath::StringType& data, |
| ScopedVector<TestStream>* test_streams) { |
| // Split the string to individual test stream data. |
| std::vector<base::FilePath::StringType> test_streams_data; |
| base::SplitString(data, ';', &test_streams_data); |
| CHECK_GE(test_streams_data.size(), 1U) << data; |
| |
| // Parse each test stream data and read the input file. |
| for (size_t index = 0; index < test_streams_data.size(); ++index) { |
| std::vector<base::FilePath::StringType> fields; |
| base::SplitString(test_streams_data[index], ':', &fields); |
| CHECK_GE(fields.size(), 4U) << data; |
| CHECK_LE(fields.size(), 9U) << data; |
| TestStream* test_stream = new TestStream(); |
| |
| base::FilePath::StringType filename = fields[0]; |
| int width, height; |
| CHECK(base::StringToInt(fields[1], &width)); |
| CHECK(base::StringToInt(fields[2], &height)); |
| test_stream->size = gfx::Size(width, height); |
| CHECK(!test_stream->size.IsEmpty()); |
| int profile; |
| CHECK(base::StringToInt(fields[3], &profile)); |
| CHECK_GT(profile, media::VIDEO_CODEC_PROFILE_UNKNOWN); |
| CHECK_LE(profile, media::VIDEO_CODEC_PROFILE_MAX); |
| test_stream->requested_profile = |
| static_cast<media::VideoCodecProfile>(profile); |
| |
| if (fields.size() >= 5 && !fields[4].empty()) |
| test_stream->out_filename = fields[4]; |
| |
| if (fields.size() >= 6 && !fields[5].empty()) |
| CHECK(base::StringToUint(fields[5], &test_stream->requested_bitrate)); |
| |
| if (fields.size() >= 7 && !fields[6].empty()) |
| CHECK(base::StringToUint(fields[6], &test_stream->requested_framerate)); |
| |
| if (fields.size() >= 8 && !fields[7].empty()) { |
| CHECK(base::StringToUint(fields[7], |
| &test_stream->requested_subsequent_bitrate)); |
| } |
| |
| if (fields.size() >= 9 && !fields[8].empty()) { |
| CHECK(base::StringToUint(fields[8], |
| &test_stream->requested_subsequent_framerate)); |
| } |
| |
| CHECK(test_stream->input_file.Initialize(base::FilePath(filename))); |
| test_streams->push_back(test_stream); |
| } |
| } |
| |
| // Set default parameters of |test_streams| and update the parameters according |
| // to |mid_stream_bitrate_switch| and |mid_stream_framerate_switch|. |
| static void UpdateTestStreamData(bool mid_stream_bitrate_switch, |
| bool mid_stream_framerate_switch, |
| ScopedVector<TestStream>* test_streams) { |
| for (size_t i = 0; i < test_streams->size(); i++) { |
| TestStream* test_stream = (*test_streams)[i]; |
| // Use defaults for bitrate/framerate if they are not provided. |
| if (test_stream->requested_bitrate == 0) |
| test_stream->requested_bitrate = kDefaultBitrate; |
| |
| if (test_stream->requested_framerate == 0) |
| test_stream->requested_framerate = kDefaultFramerate; |
| |
| // If bitrate/framerate switch is requested, use the subsequent values if |
| // provided, or, if not, calculate them from their initial values using |
| // the default ratios. |
| // Otherwise, if a switch is not requested, keep the initial values. |
| if (mid_stream_bitrate_switch) { |
| if (test_stream->requested_subsequent_bitrate == 0) { |
| test_stream->requested_subsequent_bitrate = |
| test_stream->requested_bitrate * kDefaultSubsequentBitrateRatio; |
| } |
| } else { |
| test_stream->requested_subsequent_bitrate = |
| test_stream->requested_bitrate; |
| } |
| if (test_stream->requested_subsequent_bitrate == 0) |
| test_stream->requested_subsequent_bitrate = 1; |
| |
| if (mid_stream_framerate_switch) { |
| if (test_stream->requested_subsequent_framerate == 0) { |
| test_stream->requested_subsequent_framerate = |
| test_stream->requested_framerate * kDefaultSubsequentFramerateRatio; |
| } |
| } else { |
| test_stream->requested_subsequent_framerate = |
| test_stream->requested_framerate; |
| } |
| if (test_stream->requested_subsequent_framerate == 0) |
| test_stream->requested_subsequent_framerate = 1; |
| } |
| } |
| |
| enum ClientState { |
| CS_CREATED, |
| CS_ENCODER_SET, |
| CS_INITIALIZED, |
| CS_ENCODING, |
| CS_FINISHED, |
| CS_ERROR, |
| }; |
| |
| // Performs basic, codec-specific sanity checks on the stream buffers passed |
| // to ProcessStreamBuffer(): whether we've seen keyframes before non-keyframes, |
| // correct sequences of H.264 NALUs (SPS before PPS and before slices), etc. |
| // Calls given FrameFoundCallback when a complete frame is found while |
| // processing. |
| class StreamValidator { |
| public: |
| // To be called when a complete frame is found while processing a stream |
| // buffer, passing true if the frame is a keyframe. Returns false if we |
| // are not interested in more frames and further processing should be aborted. |
| typedef base::Callback<bool(bool)> FrameFoundCallback; |
| |
| virtual ~StreamValidator() {} |
| |
| // Provide a StreamValidator instance for the given |profile|. |
| static scoped_ptr<StreamValidator> Create(media::VideoCodecProfile profile, |
| const FrameFoundCallback& frame_cb); |
| |
| // Process and verify contents of a bitstream buffer. |
| virtual void ProcessStreamBuffer(const uint8* stream, size_t size) = 0; |
| |
| protected: |
| explicit StreamValidator(const FrameFoundCallback& frame_cb) |
| : frame_cb_(frame_cb) {} |
| |
| FrameFoundCallback frame_cb_; |
| }; |
| |
| class H264Validator : public StreamValidator { |
| public: |
| explicit H264Validator(const FrameFoundCallback& frame_cb) |
| : StreamValidator(frame_cb), |
| seen_sps_(false), |
| seen_pps_(false), |
| seen_idr_(false) {} |
| |
| virtual void ProcessStreamBuffer(const uint8* stream, size_t size) OVERRIDE; |
| |
| private: |
| // Set to true when encoder provides us with the corresponding NALU type. |
| bool seen_sps_; |
| bool seen_pps_; |
| bool seen_idr_; |
| |
| media::H264Parser h264_parser_; |
| }; |
| |
| void H264Validator::ProcessStreamBuffer(const uint8* stream, size_t size) { |
| h264_parser_.SetStream(stream, size); |
| |
| while (1) { |
| media::H264NALU nalu; |
| media::H264Parser::Result result; |
| |
| result = h264_parser_.AdvanceToNextNALU(&nalu); |
| if (result == media::H264Parser::kEOStream) |
| break; |
| |
| ASSERT_EQ(media::H264Parser::kOk, result); |
| |
| bool keyframe = false; |
| |
| switch (nalu.nal_unit_type) { |
| case media::H264NALU::kIDRSlice: |
| ASSERT_TRUE(seen_sps_); |
| ASSERT_TRUE(seen_pps_); |
| seen_idr_ = true; |
| // fallthrough |
| case media::H264NALU::kNonIDRSlice: { |
| ASSERT_TRUE(seen_idr_); |
| |
| media::H264SliceHeader shdr; |
| ASSERT_EQ(media::H264Parser::kOk, |
| h264_parser_.ParseSliceHeader(nalu, &shdr)); |
| keyframe = shdr.IsISlice() || shdr.IsSISlice(); |
| |
| if (!frame_cb_.Run(keyframe)) |
| return; |
| break; |
| } |
| |
| case media::H264NALU::kSPS: { |
| int sps_id; |
| ASSERT_EQ(media::H264Parser::kOk, h264_parser_.ParseSPS(&sps_id)); |
| seen_sps_ = true; |
| break; |
| } |
| |
| case media::H264NALU::kPPS: { |
| ASSERT_TRUE(seen_sps_); |
| int pps_id; |
| ASSERT_EQ(media::H264Parser::kOk, h264_parser_.ParsePPS(&pps_id)); |
| seen_pps_ = true; |
| break; |
| } |
| |
| default: |
| break; |
| } |
| } |
| } |
| |
| class VP8Validator : public StreamValidator { |
| public: |
| explicit VP8Validator(const FrameFoundCallback& frame_cb) |
| : StreamValidator(frame_cb), |
| seen_keyframe_(false) {} |
| |
| virtual void ProcessStreamBuffer(const uint8* stream, size_t size) OVERRIDE; |
| |
| private: |
| // Have we already got a keyframe in the stream? |
| bool seen_keyframe_; |
| }; |
| |
| void VP8Validator::ProcessStreamBuffer(const uint8* stream, size_t size) { |
| bool keyframe = !(stream[0] & 0x01); |
| if (keyframe) |
| seen_keyframe_ = true; |
| |
| EXPECT_TRUE(seen_keyframe_); |
| |
| frame_cb_.Run(keyframe); |
| // TODO(posciak): We could be getting more frames in the buffer, but there is |
| // no simple way to detect this. We'd need to parse the frames and go through |
| // partition numbers/sizes. For now assume one frame per buffer. |
| } |
| |
| // static |
| scoped_ptr<StreamValidator> StreamValidator::Create( |
| media::VideoCodecProfile profile, |
| const FrameFoundCallback& frame_cb) { |
| scoped_ptr<StreamValidator> validator; |
| |
| if (profile >= media::H264PROFILE_MIN && |
| profile <= media::H264PROFILE_MAX) { |
| validator.reset(new H264Validator(frame_cb)); |
| } else if (profile >= media::VP8PROFILE_MIN && |
| profile <= media::VP8PROFILE_MAX) { |
| validator.reset(new VP8Validator(frame_cb)); |
| } else { |
| LOG(FATAL) << "Unsupported profile: " << profile; |
| } |
| |
| return validator.Pass(); |
| } |
| |
| class VEAClient : public VideoEncodeAccelerator::Client { |
| public: |
| VEAClient(const TestStream& test_stream, |
| ClientStateNotification<ClientState>* note, |
| bool save_to_file, |
| unsigned int keyframe_period, |
| bool force_bitrate, |
| bool test_perf); |
| virtual ~VEAClient(); |
| void CreateEncoder(); |
| void DestroyEncoder(); |
| |
| // Return the number of encoded frames per second. |
| double frames_per_second(); |
| |
| // VideoDecodeAccelerator::Client implementation. |
| virtual void RequireBitstreamBuffers(unsigned int input_count, |
| const gfx::Size& input_coded_size, |
| size_t output_buffer_size) OVERRIDE; |
| virtual void BitstreamBufferReady(int32 bitstream_buffer_id, |
| size_t payload_size, |
| bool key_frame) OVERRIDE; |
| virtual void NotifyError(VideoEncodeAccelerator::Error error) OVERRIDE; |
| |
| private: |
| bool has_encoder() { return encoder_.get(); } |
| |
| void SetState(ClientState new_state); |
| |
| // Set current stream parameters to given |bitrate| at |framerate|. |
| void SetStreamParameters(unsigned int bitrate, unsigned int framerate); |
| |
| // Called when encoder is done with a VideoFrame. |
| void InputNoLongerNeededCallback(int32 input_id); |
| |
| // Ensure encoder has at least as many inputs as it asked for |
| // via RequireBitstreamBuffers(). |
| void FeedEncoderWithInputs(); |
| |
| // Provide the encoder with a new output buffer. |
| void FeedEncoderWithOutput(base::SharedMemory* shm); |
| |
| // Called on finding a complete frame (with |keyframe| set to true for |
| // keyframes) in the stream, to perform codec-independent, per-frame checks |
| // and accounting. Returns false once we have collected all frames we needed. |
| bool HandleEncodedFrame(bool keyframe); |
| |
| // Verify that stream bitrate has been close to current_requested_bitrate_, |
| // assuming current_framerate_ since the last time VerifyStreamProperties() |
| // was called. Fail the test if |force_bitrate_| is true and the bitrate |
| // is not within kBitrateTolerance. |
| void VerifyStreamProperties(); |
| |
| // Test codec performance, failing the test if we are currently running |
| // the performance test. |
| void VerifyPerf(); |
| |
| // Prepare and return a frame wrapping the data at |position| bytes in |
| // the input stream, ready to be sent to encoder. |
| scoped_refptr<media::VideoFrame> PrepareInputFrame(off_t position); |
| |
| ClientState state_; |
| scoped_ptr<VideoEncodeAccelerator> encoder_; |
| |
| const TestStream& test_stream_; |
| // Used to notify another thread about the state. VEAClient does not own this. |
| ClientStateNotification<ClientState>* note_; |
| |
| // Ids assigned to VideoFrames (start at 1 for easy comparison with |
| // num_encoded_frames_). |
| std::set<int32> inputs_at_client_; |
| int32 next_input_id_; |
| |
| // Ids for output BitstreamBuffers. |
| typedef std::map<int32, base::SharedMemory*> IdToSHM; |
| ScopedVector<base::SharedMemory> output_shms_; |
| IdToSHM output_buffers_at_client_; |
| int32 next_output_buffer_id_; |
| |
| // Current offset into input stream. |
| off_t pos_in_input_stream_; |
| // Byte size of an input frame. |
| size_t input_buffer_size_; |
| gfx::Size input_coded_size_; |
| // Requested by encoder. |
| unsigned int num_required_input_buffers_; |
| size_t output_buffer_size_; |
| |
| // Precalculated number of frames in the stream. |
| unsigned int num_frames_in_stream_; |
| |
| // Number of frames to encode. This may differ from num_frames_in_stream_ if |
| // we need more frames for bitrate tests. |
| unsigned int num_frames_to_encode_; |
| |
| // Number of encoded frames we've got from the encoder thus far. |
| unsigned int num_encoded_frames_; |
| |
| // Frames since last bitrate verification. |
| unsigned int num_frames_since_last_check_; |
| |
| // True if received a keyframe while processing current bitstream buffer. |
| bool seen_keyframe_in_this_buffer_; |
| |
| // True if we are to save the encoded stream to a file. |
| bool save_to_file_; |
| |
| // Request a keyframe every keyframe_period_ frames. |
| const unsigned int keyframe_period_; |
| |
| // Frame number for which we requested a keyframe. |
| unsigned int keyframe_requested_at_; |
| |
| // True if we are asking encoder for a particular bitrate. |
| bool force_bitrate_; |
| |
| // Current requested bitrate. |
| unsigned int current_requested_bitrate_; |
| |
| // Current expected framerate. |
| unsigned int current_framerate_; |
| |
| // Byte size of the encoded stream (for bitrate calculation) since last |
| // time we checked bitrate. |
| size_t encoded_stream_size_since_last_check_; |
| |
| // If true, verify performance at the end of the test. |
| bool test_perf_; |
| |
| scoped_ptr<StreamValidator> validator_; |
| |
| // The time when the encoding started. |
| base::TimeTicks encode_start_time_; |
| |
| // The time when the last encoded frame is ready. |
| base::TimeTicks last_frame_ready_time_; |
| |
| // All methods of this class should be run on the same thread. |
| base::ThreadChecker thread_checker_; |
| }; |
| |
| VEAClient::VEAClient(const TestStream& test_stream, |
| ClientStateNotification<ClientState>* note, |
| bool save_to_file, |
| unsigned int keyframe_period, |
| bool force_bitrate, |
| bool test_perf) |
| : state_(CS_CREATED), |
| test_stream_(test_stream), |
| note_(note), |
| next_input_id_(1), |
| next_output_buffer_id_(0), |
| pos_in_input_stream_(0), |
| input_buffer_size_(0), |
| num_required_input_buffers_(0), |
| output_buffer_size_(0), |
| num_frames_in_stream_(0), |
| num_frames_to_encode_(0), |
| num_encoded_frames_(0), |
| num_frames_since_last_check_(0), |
| seen_keyframe_in_this_buffer_(false), |
| save_to_file_(save_to_file), |
| keyframe_period_(keyframe_period), |
| keyframe_requested_at_(kMaxFrameNum), |
| force_bitrate_(force_bitrate), |
| current_requested_bitrate_(0), |
| current_framerate_(0), |
| encoded_stream_size_since_last_check_(0), |
| test_perf_(test_perf) { |
| if (keyframe_period_) |
| CHECK_LT(kMaxKeyframeDelay, keyframe_period_); |
| |
| validator_ = StreamValidator::Create( |
| test_stream_.requested_profile, |
| base::Bind(&VEAClient::HandleEncodedFrame, base::Unretained(this))); |
| |
| CHECK(validator_.get()); |
| |
| if (save_to_file_) { |
| CHECK(!test_stream_.out_filename.empty()); |
| base::FilePath out_filename(test_stream_.out_filename); |
| // This creates or truncates out_filename. |
| // Without it, AppendToFile() will not work. |
| EXPECT_EQ(0, base::WriteFile(out_filename, NULL, 0)); |
| } |
| |
| input_buffer_size_ = |
| media::VideoFrame::AllocationSize(kInputFormat, test_stream.size); |
| CHECK_GT(input_buffer_size_, 0UL); |
| |
| // Calculate the number of frames in the input stream by dividing its length |
| // in bytes by frame size in bytes. |
| CHECK_EQ(test_stream_.input_file.length() % input_buffer_size_, 0U) |
| << "Stream byte size is not a product of calculated frame byte size"; |
| num_frames_in_stream_ = test_stream_.input_file.length() / input_buffer_size_; |
| CHECK_GT(num_frames_in_stream_, 0UL); |
| CHECK_LE(num_frames_in_stream_, kMaxFrameNum); |
| |
| // We may need to loop over the stream more than once if more frames than |
| // provided is required for bitrate tests. |
| if (force_bitrate_ && num_frames_in_stream_ < kMinFramesForBitrateTests) { |
| DVLOG(1) << "Stream too short for bitrate test (" << num_frames_in_stream_ |
| << " frames), will loop it to reach " << kMinFramesForBitrateTests |
| << " frames"; |
| num_frames_to_encode_ = kMinFramesForBitrateTests; |
| } else { |
| num_frames_to_encode_ = num_frames_in_stream_; |
| } |
| |
| thread_checker_.DetachFromThread(); |
| } |
| |
| VEAClient::~VEAClient() { CHECK(!has_encoder()); } |
| |
| void VEAClient::CreateEncoder() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| CHECK(!has_encoder()); |
| |
| #if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL) |
| scoped_ptr<V4L2Device> device = V4L2Device::Create(V4L2Device::kEncoder); |
| encoder_.reset(new V4L2VideoEncodeAccelerator(device.Pass())); |
| #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY) && defined(USE_X11) |
| encoder_.reset(new VaapiVideoEncodeAccelerator(gfx::GetXDisplay())); |
| #endif |
| |
| SetState(CS_ENCODER_SET); |
| |
| DVLOG(1) << "Profile: " << test_stream_.requested_profile |
| << ", initial bitrate: " << test_stream_.requested_bitrate; |
| if (!encoder_->Initialize(kInputFormat, |
| test_stream_.size, |
| test_stream_.requested_profile, |
| test_stream_.requested_bitrate, |
| this)) { |
| DLOG(ERROR) << "VideoEncodeAccelerator::Initialize() failed"; |
| SetState(CS_ERROR); |
| return; |
| } |
| |
| SetStreamParameters(test_stream_.requested_bitrate, |
| test_stream_.requested_framerate); |
| SetState(CS_INITIALIZED); |
| } |
| |
| void VEAClient::DestroyEncoder() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| if (!has_encoder()) |
| return; |
| encoder_.reset(); |
| } |
| |
| double VEAClient::frames_per_second() { |
| base::TimeDelta duration = last_frame_ready_time_ - encode_start_time_; |
| return num_encoded_frames_ / duration.InSecondsF(); |
| } |
| |
| void VEAClient::RequireBitstreamBuffers(unsigned int input_count, |
| const gfx::Size& input_coded_size, |
| size_t output_size) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| ASSERT_EQ(state_, CS_INITIALIZED); |
| SetState(CS_ENCODING); |
| |
| // TODO(posciak): For now we only support input streams that meet encoder |
| // size requirements exactly (i.e. coded size == visible size), so that we |
| // can simply mmap the stream file and feed the encoder directly with chunks |
| // of that, instead of memcpying from mmapped file into a separate set of |
| // input buffers that would meet the coded size and alignment requirements. |
| // If/when this is changed, the ARM-specific alignment check below should be |
| // redone as well. |
| input_coded_size_ = input_coded_size; |
| ASSERT_EQ(input_coded_size_, test_stream_.size); |
| #if defined(ARCH_CPU_ARMEL) |
| // ARM performs CPU cache management with CPU cache line granularity. We thus |
| // need to ensure our buffers are CPU cache line-aligned (64 byte-aligned). |
| // Otherwise newer kernels will refuse to accept them, and on older kernels |
| // we'll be treating ourselves to random corruption. |
| // Since we are just mmapping and passing chunks of the input file, to ensure |
| // alignment, if the starting virtual addresses of the frames in it were not |
| // 64 byte-aligned, we'd have to use a separate set of input buffers and copy |
| // the frames into them before sending to the encoder. It would have been an |
| // overkill here though, because, for now at least, we only test resolutions |
| // that result in proper alignment, and it would have also interfered with |
| // performance testing. So just assert that the frame size is a multiple of |
| // 64 bytes. This ensures all frames start at 64-byte boundary, because |
| // MemoryMappedFile should be mmapp()ed at virtual page start as well. |
| ASSERT_EQ(input_buffer_size_ & 63, 0u) |
| << "Frame size has to be a multiple of 64 bytes"; |
| ASSERT_EQ(reinterpret_cast<off_t>(test_stream_.input_file.data()) & 63, 0) |
| << "Mapped file should be mapped at a 64 byte boundary"; |
| #endif |
| |
| num_required_input_buffers_ = input_count; |
| ASSERT_GT(num_required_input_buffers_, 0UL); |
| |
| output_buffer_size_ = output_size; |
| ASSERT_GT(output_buffer_size_, 0UL); |
| |
| for (unsigned int i = 0; i < kNumOutputBuffers; ++i) { |
| base::SharedMemory* shm = new base::SharedMemory(); |
| CHECK(shm->CreateAndMapAnonymous(output_buffer_size_)); |
| output_shms_.push_back(shm); |
| FeedEncoderWithOutput(shm); |
| } |
| |
| encode_start_time_ = base::TimeTicks::Now(); |
| FeedEncoderWithInputs(); |
| } |
| |
| void VEAClient::BitstreamBufferReady(int32 bitstream_buffer_id, |
| size_t payload_size, |
| bool key_frame) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| ASSERT_LE(payload_size, output_buffer_size_); |
| |
| IdToSHM::iterator it = output_buffers_at_client_.find(bitstream_buffer_id); |
| ASSERT_NE(it, output_buffers_at_client_.end()); |
| base::SharedMemory* shm = it->second; |
| output_buffers_at_client_.erase(it); |
| |
| if (state_ == CS_FINISHED) |
| return; |
| |
| encoded_stream_size_since_last_check_ += payload_size; |
| |
| const uint8* stream_ptr = static_cast<const uint8*>(shm->memory()); |
| if (payload_size > 0) |
| validator_->ProcessStreamBuffer(stream_ptr, payload_size); |
| |
| EXPECT_EQ(key_frame, seen_keyframe_in_this_buffer_); |
| seen_keyframe_in_this_buffer_ = false; |
| |
| if (save_to_file_) { |
| int size = base::checked_cast<int>(payload_size); |
| EXPECT_EQ(base::AppendToFile( |
| base::FilePath::FromUTF8Unsafe(test_stream_.out_filename), |
| static_cast<char*>(shm->memory()), |
| size), |
| size); |
| } |
| |
| FeedEncoderWithOutput(shm); |
| } |
| |
| void VEAClient::NotifyError(VideoEncodeAccelerator::Error error) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| SetState(CS_ERROR); |
| } |
| |
| void VEAClient::SetState(ClientState new_state) { |
| DVLOG(4) << "Changing state " << state_ << "->" << new_state; |
| note_->Notify(new_state); |
| state_ = new_state; |
| } |
| |
| void VEAClient::SetStreamParameters(unsigned int bitrate, |
| unsigned int framerate) { |
| current_requested_bitrate_ = bitrate; |
| current_framerate_ = framerate; |
| CHECK_GT(current_requested_bitrate_, 0UL); |
| CHECK_GT(current_framerate_, 0UL); |
| encoder_->RequestEncodingParametersChange(current_requested_bitrate_, |
| current_framerate_); |
| DVLOG(1) << "Switched parameters to " << current_requested_bitrate_ |
| << " bps @ " << current_framerate_ << " FPS"; |
| } |
| |
| void VEAClient::InputNoLongerNeededCallback(int32 input_id) { |
| std::set<int32>::iterator it = inputs_at_client_.find(input_id); |
| ASSERT_NE(it, inputs_at_client_.end()); |
| inputs_at_client_.erase(it); |
| FeedEncoderWithInputs(); |
| } |
| |
| scoped_refptr<media::VideoFrame> VEAClient::PrepareInputFrame(off_t position) { |
| CHECK_LE(position + input_buffer_size_, test_stream_.input_file.length()); |
| |
| uint8* frame_data = |
| const_cast<uint8*>(test_stream_.input_file.data() + position); |
| |
| CHECK_GT(current_framerate_, 0U); |
| scoped_refptr<media::VideoFrame> frame = |
| media::VideoFrame::WrapExternalYuvData( |
| kInputFormat, |
| input_coded_size_, |
| gfx::Rect(test_stream_.size), |
| test_stream_.size, |
| input_coded_size_.width(), |
| input_coded_size_.width() / 2, |
| input_coded_size_.width() / 2, |
| frame_data, |
| frame_data + input_coded_size_.GetArea(), |
| frame_data + (input_coded_size_.GetArea() * 5 / 4), |
| base::TimeDelta().FromMilliseconds( |
| next_input_id_ * base::Time::kMillisecondsPerSecond / |
| current_framerate_), |
| media::BindToCurrentLoop( |
| base::Bind(&VEAClient::InputNoLongerNeededCallback, |
| base::Unretained(this), |
| next_input_id_))); |
| |
| CHECK(inputs_at_client_.insert(next_input_id_).second); |
| ++next_input_id_; |
| |
| return frame; |
| } |
| |
| void VEAClient::FeedEncoderWithInputs() { |
| if (!has_encoder()) |
| return; |
| |
| if (state_ != CS_ENCODING) |
| return; |
| |
| while (inputs_at_client_.size() < |
| num_required_input_buffers_ + kNumExtraInputFrames) { |
| size_t bytes_left = test_stream_.input_file.length() - pos_in_input_stream_; |
| if (bytes_left < input_buffer_size_) { |
| DCHECK_EQ(bytes_left, 0UL); |
| // Rewind if at the end of stream and we are still encoding. |
| // This is to flush the encoder with additional frames from the beginning |
| // of the stream, or if the stream is shorter that the number of frames |
| // we require for bitrate tests. |
| pos_in_input_stream_ = 0; |
| continue; |
| } |
| |
| bool force_keyframe = false; |
| if (keyframe_period_ && next_input_id_ % keyframe_period_ == 0) { |
| keyframe_requested_at_ = next_input_id_; |
| force_keyframe = true; |
| } |
| |
| scoped_refptr<media::VideoFrame> video_frame = |
| PrepareInputFrame(pos_in_input_stream_); |
| pos_in_input_stream_ += input_buffer_size_; |
| |
| encoder_->Encode(video_frame, force_keyframe); |
| } |
| } |
| |
| void VEAClient::FeedEncoderWithOutput(base::SharedMemory* shm) { |
| if (!has_encoder()) |
| return; |
| |
| if (state_ != CS_ENCODING) |
| return; |
| |
| base::SharedMemoryHandle dup_handle; |
| CHECK(shm->ShareToProcess(base::Process::Current().handle(), &dup_handle)); |
| |
| media::BitstreamBuffer bitstream_buffer( |
| next_output_buffer_id_++, dup_handle, output_buffer_size_); |
| CHECK(output_buffers_at_client_.insert(std::make_pair(bitstream_buffer.id(), |
| shm)).second); |
| encoder_->UseOutputBitstreamBuffer(bitstream_buffer); |
| } |
| |
| bool VEAClient::HandleEncodedFrame(bool keyframe) { |
| // This would be a bug in the test, which should not ignore false |
| // return value from this method. |
| CHECK_LE(num_encoded_frames_, num_frames_to_encode_); |
| |
| ++num_encoded_frames_; |
| ++num_frames_since_last_check_; |
| |
| last_frame_ready_time_ = base::TimeTicks::Now(); |
| if (keyframe) { |
| // Got keyframe, reset keyframe detection regardless of whether we |
| // got a frame in time or not. |
| keyframe_requested_at_ = kMaxFrameNum; |
| seen_keyframe_in_this_buffer_ = true; |
| } |
| |
| // Because the keyframe behavior requirements are loose, we give |
| // the encoder more freedom here. It could either deliver a keyframe |
| // immediately after we requested it, which could be for a frame number |
| // before the one we requested it for (if the keyframe request |
| // is asynchronous, i.e. not bound to any concrete frame, and because |
| // the pipeline can be deeper than one frame), at that frame, or after. |
| // So the only constraints we put here is that we get a keyframe not |
| // earlier than we requested one (in time), and not later than |
| // kMaxKeyframeDelay frames after the frame, for which we requested |
| // it, comes back encoded. |
| EXPECT_LE(num_encoded_frames_, keyframe_requested_at_ + kMaxKeyframeDelay); |
| |
| if (num_encoded_frames_ == num_frames_to_encode_ / 2) { |
| VerifyStreamProperties(); |
| if (test_stream_.requested_subsequent_bitrate != |
| current_requested_bitrate_ || |
| test_stream_.requested_subsequent_framerate != current_framerate_) { |
| SetStreamParameters(test_stream_.requested_subsequent_bitrate, |
| test_stream_.requested_subsequent_framerate); |
| } |
| } else if (num_encoded_frames_ == num_frames_to_encode_) { |
| VerifyPerf(); |
| VerifyStreamProperties(); |
| SetState(CS_FINISHED); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void VEAClient::VerifyPerf() { |
| double measured_fps = frames_per_second(); |
| LOG(INFO) << "Measured encoder FPS: " << measured_fps; |
| if (test_perf_) |
| EXPECT_GE(measured_fps, kMinPerfFPS); |
| } |
| |
| void VEAClient::VerifyStreamProperties() { |
| CHECK_GT(num_frames_since_last_check_, 0UL); |
| CHECK_GT(encoded_stream_size_since_last_check_, 0UL); |
| unsigned int bitrate = encoded_stream_size_since_last_check_ * 8 * |
| current_framerate_ / num_frames_since_last_check_; |
| DVLOG(1) << "Current chunk's bitrate: " << bitrate |
| << " (expected: " << current_requested_bitrate_ |
| << " @ " << current_framerate_ << " FPS," |
| << " num frames in chunk: " << num_frames_since_last_check_; |
| |
| num_frames_since_last_check_ = 0; |
| encoded_stream_size_since_last_check_ = 0; |
| |
| if (force_bitrate_) { |
| EXPECT_NEAR(bitrate, |
| current_requested_bitrate_, |
| kBitrateTolerance * current_requested_bitrate_); |
| } |
| } |
| |
| // Test parameters: |
| // - Number of concurrent encoders. |
| // - If true, save output to file (provided an output filename was supplied). |
| // - Force a keyframe every n frames. |
| // - Force bitrate; the actual required value is provided as a property |
| // of the input stream, because it depends on stream type/resolution/etc. |
| // - If true, measure performance. |
| // - If true, switch bitrate mid-stream. |
| // - If true, switch framerate mid-stream. |
| class VideoEncodeAcceleratorTest |
| : public ::testing::TestWithParam< |
| Tuple7<int, bool, int, bool, bool, bool, bool> > {}; |
| |
| TEST_P(VideoEncodeAcceleratorTest, TestSimpleEncode) { |
| const size_t num_concurrent_encoders = GetParam().a; |
| const bool save_to_file = GetParam().b; |
| const unsigned int keyframe_period = GetParam().c; |
| const bool force_bitrate = GetParam().d; |
| const bool test_perf = GetParam().e; |
| const bool mid_stream_bitrate_switch = GetParam().f; |
| const bool mid_stream_framerate_switch = GetParam().g; |
| |
| // Initialize the test streams. |
| ScopedVector<TestStream> test_streams; |
| ParseAndReadTestStreamData(*g_test_stream_data, &test_streams); |
| UpdateTestStreamData( |
| mid_stream_bitrate_switch, mid_stream_framerate_switch, &test_streams); |
| |
| ScopedVector<ClientStateNotification<ClientState> > notes; |
| ScopedVector<VEAClient> clients; |
| base::Thread encoder_thread("EncoderThread"); |
| ASSERT_TRUE(encoder_thread.Start()); |
| |
| // Create all encoders. |
| for (size_t i = 0; i < num_concurrent_encoders; i++) { |
| size_t test_stream_index = i % test_streams.size(); |
| // Disregard save_to_file if we didn't get an output filename. |
| bool encoder_save_to_file = |
| (save_to_file && |
| !test_streams[test_stream_index]->out_filename.empty()); |
| |
| notes.push_back(new ClientStateNotification<ClientState>()); |
| clients.push_back(new VEAClient(*test_streams[test_stream_index], |
| notes.back(), |
| encoder_save_to_file, |
| keyframe_period, |
| force_bitrate, |
| test_perf)); |
| |
| encoder_thread.message_loop()->PostTask( |
| FROM_HERE, |
| base::Bind(&VEAClient::CreateEncoder, |
| base::Unretained(clients.back()))); |
| } |
| |
| // All encoders must pass through states in this order. |
| enum ClientState state_transitions[] = {CS_ENCODER_SET, CS_INITIALIZED, |
| CS_ENCODING, CS_FINISHED}; |
| |
| // Wait for all encoders to go through all states and finish. |
| // Do this by waiting for all encoders to advance to state n before checking |
| // state n+1, to verify that they are able to operate concurrently. |
| // It also simulates the real-world usage better, as the main thread, on which |
| // encoders are created/destroyed, is a single GPU Process ChildThread. |
| // Moreover, we can't have proper multithreading on X11, so this could cause |
| // hard to debug issues there, if there were multiple "ChildThreads". |
| for (size_t state_no = 0; state_no < arraysize(state_transitions); ++state_no) |
| for (size_t i = 0; i < num_concurrent_encoders; i++) |
| ASSERT_EQ(notes[i]->Wait(), state_transitions[state_no]); |
| |
| for (size_t i = 0; i < num_concurrent_encoders; ++i) { |
| encoder_thread.message_loop()->PostTask( |
| FROM_HERE, |
| base::Bind(&VEAClient::DestroyEncoder, base::Unretained(clients[i]))); |
| } |
| |
| // This ensures all tasks have finished. |
| encoder_thread.Stop(); |
| } |
| |
| INSTANTIATE_TEST_CASE_P( |
| SimpleEncode, |
| VideoEncodeAcceleratorTest, |
| ::testing::Values(MakeTuple(1, true, 0, false, false, false, false))); |
| |
| INSTANTIATE_TEST_CASE_P( |
| EncoderPerf, |
| VideoEncodeAcceleratorTest, |
| ::testing::Values(MakeTuple(1, false, 0, false, true, false, false))); |
| |
| INSTANTIATE_TEST_CASE_P( |
| ForceKeyframes, |
| VideoEncodeAcceleratorTest, |
| ::testing::Values(MakeTuple(1, false, 10, false, false, false, false))); |
| |
| INSTANTIATE_TEST_CASE_P( |
| ForceBitrate, |
| VideoEncodeAcceleratorTest, |
| ::testing::Values(MakeTuple(1, false, 0, true, false, false, false))); |
| |
| INSTANTIATE_TEST_CASE_P( |
| MidStreamParamSwitchBitrate, |
| VideoEncodeAcceleratorTest, |
| ::testing::Values(MakeTuple(1, false, 0, true, false, true, false))); |
| |
| INSTANTIATE_TEST_CASE_P( |
| MidStreamParamSwitchFPS, |
| VideoEncodeAcceleratorTest, |
| ::testing::Values(MakeTuple(1, false, 0, true, false, false, true))); |
| |
| INSTANTIATE_TEST_CASE_P( |
| MidStreamParamSwitchBitrateAndFPS, |
| VideoEncodeAcceleratorTest, |
| ::testing::Values(MakeTuple(1, false, 0, true, false, true, true))); |
| |
| INSTANTIATE_TEST_CASE_P( |
| MultipleEncoders, |
| VideoEncodeAcceleratorTest, |
| ::testing::Values(MakeTuple(3, false, 0, false, false, false, false), |
| MakeTuple(3, false, 0, true, false, true, true))); |
| |
| // TODO(posciak): more tests: |
| // - async FeedEncoderWithOutput |
| // - out-of-order return of outputs to encoder |
| // - multiple encoders + decoders |
| // - mid-stream encoder_->Destroy() |
| |
| } // namespace |
| } // namespace content |
| |
| int main(int argc, char** argv) { |
| testing::InitGoogleTest(&argc, argv); // Removes gtest-specific args. |
| base::CommandLine::Init(argc, argv); |
| |
| base::ShadowingAtExitManager at_exit_manager; |
| scoped_ptr<base::FilePath::StringType> test_stream_data( |
| new base::FilePath::StringType( |
| media::GetTestDataFilePath(content::g_default_in_filename).value() + |
| content::g_default_in_parameters)); |
| content::g_test_stream_data = test_stream_data.get(); |
| |
| // Needed to enable DVLOG through --vmodule. |
| logging::LoggingSettings settings; |
| settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG; |
| CHECK(logging::InitLogging(settings)); |
| |
| const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess(); |
| DCHECK(cmd_line); |
| |
| base::CommandLine::SwitchMap switches = cmd_line->GetSwitches(); |
| for (base::CommandLine::SwitchMap::const_iterator it = switches.begin(); |
| it != switches.end(); |
| ++it) { |
| if (it->first == "test_stream_data") { |
| test_stream_data->assign(it->second.c_str()); |
| continue; |
| } |
| if (it->first == "v" || it->first == "vmodule") |
| continue; |
| LOG(FATAL) << "Unexpected switch: " << it->first << ":" << it->second; |
| } |
| |
| return RUN_ALL_TESTS(); |
| } |