test/datarate_test.cc - aom - Git at Google

 /*
  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
  *
  * This source code is subject to the terms of the BSD 2 Clause License and
  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
  * was not distributed with this source code in the LICENSE file, you can
  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
  * Media Patent License 1.0 was not distributed with this source code in the
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
 */

 #include "./aom_config.h"
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
 #include "test/codec_factory.h"
 #include "test/encode_test_driver.h"
 #include "test/i420_video_source.h"
 #include "test/util.h"
 #include "test/y4m_video_source.h"
 #include "aom/aom_codec.h"

 namespace {

 class DatarateTestLarge
     : public ::libaom_test::CodecTestWith2Params<libaom_test::TestMode, int>,
       public ::libaom_test::EncoderTest {
  public:
   DatarateTestLarge() : EncoderTest(GET_PARAM(0)) {}

  protected:
   virtual ~DatarateTestLarge() {}

   virtual void SetUp() {
     InitializeConfig();
     SetMode(GET_PARAM(1));
     set_cpu_used_ = GET_PARAM(2);
     ResetModel();
   }

   virtual void ResetModel() {
     last_pts_ = 0;
     bits_in_buffer_model_ = cfg_.rc_target_bitrate * cfg_.rc_buf_initial_sz;
     frame_number_ = 0;
     tot_frame_number_ = 0;
     first_drop_ = 0;
     num_drops_ = 0;
     // Denoiser is off by default.
     denoiser_on_ = 0;
     bits_total_ = 0;
     denoiser_offon_test_ = 0;
     denoiser_offon_period_ = -1;
   }

   virtual void PreEncodeFrameHook(::libaom_test::VideoSource *video,
                                   ::libaom_test::Encoder *encoder) {
     if (video->frame() == 0) encoder->Control(AOME_SET_CPUUSED, set_cpu_used_);

     if (denoiser_offon_test_) {
       ASSERT_GT(denoiser_offon_period_, 0)
           << "denoiser_offon_period_ is not positive.";
       if ((video->frame() + 1) % denoiser_offon_period_ == 0) {
         // Flip denoiser_on_ periodically
         denoiser_on_ ^= 1;
       }
     }

     encoder->Control(AV1E_SET_NOISE_SENSITIVITY, denoiser_on_);

     const aom_rational_t tb = video->timebase();
     timebase_ = static_cast<double>(tb.num) / tb.den;
     duration_ = 0;
   }

   virtual void FramePktHook(const aom_codec_cx_pkt_t *pkt) {
     // Time since last timestamp = duration.
     aom_codec_pts_t duration = pkt->data.frame.pts - last_pts_;

     if (duration > 1) {
       // If first drop not set and we have a drop set it to this time.
       if (!first_drop_) first_drop_ = last_pts_ + 1;
       // Update the number of frame drops.
       num_drops_ += static_cast<int>(duration - 1);
       // Update counter for total number of frames (#frames input to encoder).
       // Needed for setting the proper layer_id below.
       tot_frame_number_ += static_cast<int>(duration - 1);
     }

     // Add to the buffer the bits we'd expect from a constant bitrate server.
     bits_in_buffer_model_ += static_cast<int64_t>(
         duration * timebase_ * cfg_.rc_target_bitrate * 1000);

     // Buffer should not go negative.
     ASSERT_GE(bits_in_buffer_model_, 0) << "Buffer Underrun at frame "
                                         << pkt->data.frame.pts;

     const size_t frame_size_in_bits = pkt->data.frame.sz * 8;

     // Update the total encoded bits.
     bits_total_ += frame_size_in_bits;

     // Update the most recent pts.
     last_pts_ = pkt->data.frame.pts;
     ++frame_number_;
     ++tot_frame_number_;
   }

   virtual void EndPassHook(void) {
     duration_ = (last_pts_ + 1) * timebase_;
     // Effective file datarate:
     effective_datarate_ = (bits_total_ / 1000.0) / duration_;
   }

   aom_codec_pts_t last_pts_;
   double timebase_;
   int frame_number_;      // Counter for number of non-dropped/encoded frames.
   int tot_frame_number_;  // Counter for total number of input frames.
   int64_t bits_total_;
   double duration_;
   double effective_datarate_;
   int set_cpu_used_;
   int64_t bits_in_buffer_model_;
   aom_codec_pts_t first_drop_;
   int num_drops_;
   int denoiser_on_;
   int denoiser_offon_test_;
   int denoiser_offon_period_;
 };

 // Check basic rate targeting for VBR mode.
 TEST_P(DatarateTestLarge, BasicRateTargetingVBR) {
   cfg_.rc_min_quantizer = 0;
   cfg_.rc_max_quantizer = 63;
   cfg_.g_error_resilient = 0;
   cfg_.rc_end_usage = AOM_VBR;
   cfg_.g_lag_in_frames = 0;

   ::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
                                        30, 1, 0, 140);
   for (int i = 400; i <= 800; i += 400) {
     cfg_.rc_target_bitrate = i;
     ResetModel();
     ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
     ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.75)
         << " The datarate for the file is lower than target by too much!";
     ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 1.25)
         << " The datarate for the file is greater than target by too much!";
   }
 }

 // Check basic rate targeting for CBR,
 TEST_P(DatarateTestLarge, BasicRateTargeting) {
   cfg_.rc_buf_initial_sz = 500;
   cfg_.rc_buf_optimal_sz = 500;
   cfg_.rc_buf_sz = 1000;
   cfg_.rc_dropframe_thresh = 1;
   cfg_.rc_min_quantizer = 0;
   cfg_.rc_max_quantizer = 63;
   cfg_.rc_end_usage = AOM_CBR;
   cfg_.g_lag_in_frames = 0;

   ::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
                                        30, 1, 0, 140);
   for (int i = 150; i < 800; i += 400) {
     cfg_.rc_target_bitrate = i;
     ResetModel();
     ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
     ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.85)
         << " The datarate for the file is lower than target by too much!";
     ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 1.15)
         << " The datarate for the file is greater than target by too much!";
   }
 }

 // Check basic rate targeting for CBR.
 TEST_P(DatarateTestLarge, BasicRateTargeting444) {
   ::libaom_test::Y4mVideoSource video("rush_hour_444.y4m", 0, 140);

   cfg_.g_profile = 1;
   cfg_.g_timebase = video.timebase();

   cfg_.rc_buf_initial_sz = 500;
   cfg_.rc_buf_optimal_sz = 500;
   cfg_.rc_buf_sz = 1000;
   cfg_.rc_dropframe_thresh = 1;
   cfg_.rc_min_quantizer = 0;
   cfg_.rc_max_quantizer = 63;
   cfg_.rc_end_usage = AOM_CBR;

   for (int i = 250; i < 900; i += 400) {
     cfg_.rc_target_bitrate = i;
     ResetModel();
     ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
     ASSERT_GE(static_cast<double>(cfg_.rc_target_bitrate),
               effective_datarate_ * 0.85)
         << " The datarate for the file exceeds the target by too much!";
     ASSERT_LE(static_cast<double>(cfg_.rc_target_bitrate),
               effective_datarate_ * 1.15)
         << " The datarate for the file missed the target!"
         << cfg_.rc_target_bitrate << " " << effective_datarate_;
   }
 }

 // Check that (1) the first dropped frame gets earlier and earlier
 // as the drop frame threshold is increased, and (2) that the total number of
 // frame drops does not decrease as we increase frame drop threshold.
 // Use a lower qp-max to force some frame drops.
 TEST_P(DatarateTestLarge, ChangingDropFrameThresh) {
   cfg_.rc_buf_initial_sz = 500;
   cfg_.rc_buf_optimal_sz = 500;
   cfg_.rc_buf_sz = 1000;
   cfg_.rc_undershoot_pct = 20;
   cfg_.rc_undershoot_pct = 20;
   cfg_.rc_dropframe_thresh = 10;
   cfg_.rc_min_quantizer = 0;
   cfg_.rc_max_quantizer = 50;
   cfg_.rc_end_usage = AOM_CBR;
   cfg_.rc_target_bitrate = 200;
   cfg_.g_lag_in_frames = 0;
   // TODO(marpan): Investigate datarate target failures with a smaller keyframe
   // interval (128).
   cfg_.kf_max_dist = 9999;

   ::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
                                        30, 1, 0, 100);

   const int kDropFrameThreshTestStep = 30;
   aom_codec_pts_t last_drop = 140;
   int last_num_drops = 0;
   for (int i = 40; i < 100; i += kDropFrameThreshTestStep) {
     cfg_.rc_dropframe_thresh = i;
     ResetModel();
     ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
     ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.85)
         << " The datarate for the file is lower than target by too much!";
     ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 1.15)
         << " The datarate for the file is greater than target by too much!";
     ASSERT_LE(first_drop_, last_drop)
         << " The first dropped frame for drop_thresh " << i
         << " > first dropped frame for drop_thresh "
         << i - kDropFrameThreshTestStep;
     ASSERT_GE(num_drops_, last_num_drops * 0.85)
         << " The number of dropped frames for drop_thresh " << i
         << " < number of dropped frames for drop_thresh "
         << i - kDropFrameThreshTestStep;
     last_drop = first_drop_;
     last_num_drops = num_drops_;
   }
 }

 AV1_INSTANTIATE_TEST_CASE(DatarateTestLarge,
                           ::testing::Values(::libaom_test::kOnePassGood,
                                             ::libaom_test::kRealTime),
                           ::testing::Values(2, 5));
 }  // namespace
	/*
	* Copyright (c) 2016, Alliance for Open Media. All rights reserved
	*
	* This source code is subject to the terms of the BSD 2 Clause License and
	* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
	* was not distributed with this source code in the LICENSE file, you can
	* obtain it at www.aomedia.org/license/software. If the Alliance for Open
	* Media Patent License 1.0 was not distributed with this source code in the
	* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
	*/

	#include "./aom_config.h"
	#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
	#include "test/codec_factory.h"
	#include "test/encode_test_driver.h"
	#include "test/i420_video_source.h"
	#include "test/util.h"
	#include "test/y4m_video_source.h"
	#include "aom/aom_codec.h"

	namespace {

	class DatarateTestLarge
	: public ::libaom_test::CodecTestWith2Params<libaom_test::TestMode, int>,
	public ::libaom_test::EncoderTest {
	public:
	DatarateTestLarge() : EncoderTest(GET_PARAM(0)) {}

	protected:
	virtual ~DatarateTestLarge() {}

	virtual void SetUp() {
	InitializeConfig();
	SetMode(GET_PARAM(1));
	set_cpu_used_ = GET_PARAM(2);
	ResetModel();
	}

	virtual void ResetModel() {
	last_pts_ = 0;
	bits_in_buffer_model_ = cfg_.rc_target_bitrate * cfg_.rc_buf_initial_sz;
	frame_number_ = 0;
	tot_frame_number_ = 0;
	first_drop_ = 0;
	num_drops_ = 0;
	// Denoiser is off by default.
	denoiser_on_ = 0;
	bits_total_ = 0;
	denoiser_offon_test_ = 0;
	denoiser_offon_period_ = -1;
	}

	virtual void PreEncodeFrameHook(::libaom_test::VideoSource *video,
	::libaom_test::Encoder *encoder) {
	if (video->frame() == 0) encoder->Control(AOME_SET_CPUUSED, set_cpu_used_);

	if (denoiser_offon_test_) {
	ASSERT_GT(denoiser_offon_period_, 0)
	<< "denoiser_offon_period_ is not positive.";
	if ((video->frame() + 1) % denoiser_offon_period_ == 0) {
	// Flip denoiser_on_ periodically
	denoiser_on_ ^= 1;
	}
	}

	encoder->Control(AV1E_SET_NOISE_SENSITIVITY, denoiser_on_);

	const aom_rational_t tb = video->timebase();
	timebase_ = static_cast<double>(tb.num) / tb.den;
	duration_ = 0;
	}

	virtual void FramePktHook(const aom_codec_cx_pkt_t *pkt) {
	// Time since last timestamp = duration.
	aom_codec_pts_t duration = pkt->data.frame.pts - last_pts_;

	if (duration > 1) {
	// If first drop not set and we have a drop set it to this time.
	if (!first_drop_) first_drop_ = last_pts_ + 1;
	// Update the number of frame drops.
	num_drops_ += static_cast<int>(duration - 1);
	// Update counter for total number of frames (#frames input to encoder).
	// Needed for setting the proper layer_id below.
	tot_frame_number_ += static_cast<int>(duration - 1);
	}

	// Add to the buffer the bits we'd expect from a constant bitrate server.
	bits_in_buffer_model_ += static_cast<int64_t>(
	duration * timebase_ * cfg_.rc_target_bitrate * 1000);

	// Buffer should not go negative.
	ASSERT_GE(bits_in_buffer_model_, 0) << "Buffer Underrun at frame "
	<< pkt->data.frame.pts;

	const size_t frame_size_in_bits = pkt->data.frame.sz * 8;

	// Update the total encoded bits.
	bits_total_ += frame_size_in_bits;

	// Update the most recent pts.
	last_pts_ = pkt->data.frame.pts;
	++frame_number_;
	++tot_frame_number_;
	}

	virtual void EndPassHook(void) {
	duration_ = (last_pts_ + 1) * timebase_;
	// Effective file datarate:
	effective_datarate_ = (bits_total_ / 1000.0) / duration_;
	}

	aom_codec_pts_t last_pts_;
	double timebase_;
	int frame_number_; // Counter for number of non-dropped/encoded frames.
	int tot_frame_number_; // Counter for total number of input frames.
	int64_t bits_total_;
	double duration_;
	double effective_datarate_;
	int set_cpu_used_;
	int64_t bits_in_buffer_model_;
	aom_codec_pts_t first_drop_;
	int num_drops_;
	int denoiser_on_;
	int denoiser_offon_test_;
	int denoiser_offon_period_;
	};

	// Check basic rate targeting for VBR mode.
	TEST_P(DatarateTestLarge, BasicRateTargetingVBR) {
	cfg_.rc_min_quantizer = 0;
	cfg_.rc_max_quantizer = 63;
	cfg_.g_error_resilient = 0;
	cfg_.rc_end_usage = AOM_VBR;
	cfg_.g_lag_in_frames = 0;

	::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
	30, 1, 0, 140);
	for (int i = 400; i <= 800; i += 400) {
	cfg_.rc_target_bitrate = i;
	ResetModel();
	ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
	ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.75)
	<< " The datarate for the file is lower than target by too much!";
	ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 1.25)
	<< " The datarate for the file is greater than target by too much!";
	}
	}

	// Check basic rate targeting for CBR,
	TEST_P(DatarateTestLarge, BasicRateTargeting) {
	cfg_.rc_buf_initial_sz = 500;
	cfg_.rc_buf_optimal_sz = 500;
	cfg_.rc_buf_sz = 1000;
	cfg_.rc_dropframe_thresh = 1;
	cfg_.rc_min_quantizer = 0;
	cfg_.rc_max_quantizer = 63;
	cfg_.rc_end_usage = AOM_CBR;
	cfg_.g_lag_in_frames = 0;

	::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
	30, 1, 0, 140);
	for (int i = 150; i < 800; i += 400) {
	cfg_.rc_target_bitrate = i;
	ResetModel();
	ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
	ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.85)
	<< " The datarate for the file is lower than target by too much!";
	ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 1.15)
	<< " The datarate for the file is greater than target by too much!";
	}
	}

	// Check basic rate targeting for CBR.
	TEST_P(DatarateTestLarge, BasicRateTargeting444) {
	::libaom_test::Y4mVideoSource video("rush_hour_444.y4m", 0, 140);

	cfg_.g_profile = 1;
	cfg_.g_timebase = video.timebase();

	cfg_.rc_buf_initial_sz = 500;
	cfg_.rc_buf_optimal_sz = 500;
	cfg_.rc_buf_sz = 1000;
	cfg_.rc_dropframe_thresh = 1;
	cfg_.rc_min_quantizer = 0;
	cfg_.rc_max_quantizer = 63;
	cfg_.rc_end_usage = AOM_CBR;

	for (int i = 250; i < 900; i += 400) {
	cfg_.rc_target_bitrate = i;
	ResetModel();
	ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
	ASSERT_GE(static_cast<double>(cfg_.rc_target_bitrate),
	effective_datarate_ * 0.85)
	<< " The datarate for the file exceeds the target by too much!";
	ASSERT_LE(static_cast<double>(cfg_.rc_target_bitrate),
	effective_datarate_ * 1.15)
	<< " The datarate for the file missed the target!"
	<< cfg_.rc_target_bitrate << " " << effective_datarate_;
	}
	}

	// Check that (1) the first dropped frame gets earlier and earlier
	// as the drop frame threshold is increased, and (2) that the total number of
	// frame drops does not decrease as we increase frame drop threshold.
	// Use a lower qp-max to force some frame drops.
	TEST_P(DatarateTestLarge, ChangingDropFrameThresh) {
	cfg_.rc_buf_initial_sz = 500;
	cfg_.rc_buf_optimal_sz = 500;
	cfg_.rc_buf_sz = 1000;
	cfg_.rc_undershoot_pct = 20;
	cfg_.rc_undershoot_pct = 20;
	cfg_.rc_dropframe_thresh = 10;
	cfg_.rc_min_quantizer = 0;
	cfg_.rc_max_quantizer = 50;
	cfg_.rc_end_usage = AOM_CBR;
	cfg_.rc_target_bitrate = 200;
	cfg_.g_lag_in_frames = 0;
	// TODO(marpan): Investigate datarate target failures with a smaller keyframe
	// interval (128).
	cfg_.kf_max_dist = 9999;

	::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
	30, 1, 0, 100);

	const int kDropFrameThreshTestStep = 30;
	aom_codec_pts_t last_drop = 140;
	int last_num_drops = 0;
	for (int i = 40; i < 100; i += kDropFrameThreshTestStep) {
	cfg_.rc_dropframe_thresh = i;
	ResetModel();
	ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
	ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.85)
	<< " The datarate for the file is lower than target by too much!";
	ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 1.15)
	<< " The datarate for the file is greater than target by too much!";
	ASSERT_LE(first_drop_, last_drop)
	<< " The first dropped frame for drop_thresh " << i
	<< " > first dropped frame for drop_thresh "
	<< i - kDropFrameThreshTestStep;
	ASSERT_GE(num_drops_, last_num_drops * 0.85)
	<< " The number of dropped frames for drop_thresh " << i
	<< " < number of dropped frames for drop_thresh "
	<< i - kDropFrameThreshTestStep;
	last_drop = first_drop_;
	last_num_drops = num_drops_;
	}
	}

	AV1_INSTANTIATE_TEST_CASE(DatarateTestLarge,
	::testing::Values(::libaom_test::kOnePassGood,
	::libaom_test::kRealTime),
	::testing::Values(2, 5));
	} // namespace