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Import aom library
This is the reference implementation for the Alliance for Open Media's av1 video code. The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.
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trav90
Roy Tam
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253
third_party/aom/test/datarate_test.cc
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third_party/aom/test/datarate_test.cc
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/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include "./aom_config.h"
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#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
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#include "test/codec_factory.h"
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#include "test/encode_test_driver.h"
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#include "test/i420_video_source.h"
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#include "test/util.h"
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#include "test/y4m_video_source.h"
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#include "aom/aom_codec.h"
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namespace {
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class DatarateTestLarge
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: public ::libaom_test::EncoderTest,
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public ::libaom_test::CodecTestWith2Params<libaom_test::TestMode, int> {
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public:
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DatarateTestLarge() : EncoderTest(GET_PARAM(0)) {}
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protected:
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virtual ~DatarateTestLarge() {}
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virtual void SetUp() {
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InitializeConfig();
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SetMode(GET_PARAM(1));
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set_cpu_used_ = GET_PARAM(2);
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ResetModel();
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}
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virtual void ResetModel() {
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last_pts_ = 0;
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bits_in_buffer_model_ = cfg_.rc_target_bitrate * cfg_.rc_buf_initial_sz;
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frame_number_ = 0;
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tot_frame_number_ = 0;
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first_drop_ = 0;
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num_drops_ = 0;
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// Denoiser is off by default.
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denoiser_on_ = 0;
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bits_total_ = 0;
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denoiser_offon_test_ = 0;
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denoiser_offon_period_ = -1;
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}
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virtual void PreEncodeFrameHook(::libaom_test::VideoSource *video,
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::libaom_test::Encoder *encoder) {
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if (video->frame() == 0) encoder->Control(AOME_SET_CPUUSED, set_cpu_used_);
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if (denoiser_offon_test_) {
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ASSERT_GT(denoiser_offon_period_, 0)
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<< "denoiser_offon_period_ is not positive.";
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if ((video->frame() + 1) % denoiser_offon_period_ == 0) {
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// Flip denoiser_on_ periodically
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denoiser_on_ ^= 1;
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}
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}
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encoder->Control(AV1E_SET_NOISE_SENSITIVITY, denoiser_on_);
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const aom_rational_t tb = video->timebase();
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timebase_ = static_cast<double>(tb.num) / tb.den;
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duration_ = 0;
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}
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virtual void FramePktHook(const aom_codec_cx_pkt_t *pkt) {
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// Time since last timestamp = duration.
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aom_codec_pts_t duration = pkt->data.frame.pts - last_pts_;
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if (duration > 1) {
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// If first drop not set and we have a drop set it to this time.
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if (!first_drop_) first_drop_ = last_pts_ + 1;
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// Update the number of frame drops.
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num_drops_ += static_cast<int>(duration - 1);
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// Update counter for total number of frames (#frames input to encoder).
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// Needed for setting the proper layer_id below.
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tot_frame_number_ += static_cast<int>(duration - 1);
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}
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// Add to the buffer the bits we'd expect from a constant bitrate server.
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bits_in_buffer_model_ += static_cast<int64_t>(
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duration * timebase_ * cfg_.rc_target_bitrate * 1000);
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// Buffer should not go negative.
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ASSERT_GE(bits_in_buffer_model_, 0) << "Buffer Underrun at frame "
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<< pkt->data.frame.pts;
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const size_t frame_size_in_bits = pkt->data.frame.sz * 8;
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// Update the total encoded bits.
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bits_total_ += frame_size_in_bits;
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// Update the most recent pts.
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last_pts_ = pkt->data.frame.pts;
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++frame_number_;
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++tot_frame_number_;
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}
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virtual void EndPassHook(void) {
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duration_ = (last_pts_ + 1) * timebase_;
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// Effective file datarate:
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effective_datarate_ = (bits_total_ / 1000.0) / duration_;
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}
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aom_codec_pts_t last_pts_;
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double timebase_;
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int frame_number_; // Counter for number of non-dropped/encoded frames.
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int tot_frame_number_; // Counter for total number of input frames.
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int64_t bits_total_;
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double duration_;
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double effective_datarate_;
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int set_cpu_used_;
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int64_t bits_in_buffer_model_;
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aom_codec_pts_t first_drop_;
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int num_drops_;
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int denoiser_on_;
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int denoiser_offon_test_;
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int denoiser_offon_period_;
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};
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// Check basic rate targeting for VBR mode.
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TEST_P(DatarateTestLarge, BasicRateTargetingVBR) {
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cfg_.rc_min_quantizer = 0;
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cfg_.rc_max_quantizer = 63;
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cfg_.g_error_resilient = 0;
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cfg_.rc_end_usage = AOM_VBR;
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cfg_.g_lag_in_frames = 0;
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::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
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30, 1, 0, 140);
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for (int i = 400; i <= 800; i += 400) {
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cfg_.rc_target_bitrate = i;
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ResetModel();
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ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.75)
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<< " The datarate for the file is lower than target by too much!";
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ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 1.25)
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<< " The datarate for the file is greater than target by too much!";
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}
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}
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// Check basic rate targeting for CBR,
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TEST_P(DatarateTestLarge, BasicRateTargeting) {
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cfg_.rc_buf_initial_sz = 500;
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cfg_.rc_buf_optimal_sz = 500;
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cfg_.rc_buf_sz = 1000;
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cfg_.rc_dropframe_thresh = 1;
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cfg_.rc_min_quantizer = 0;
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cfg_.rc_max_quantizer = 63;
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cfg_.rc_end_usage = AOM_CBR;
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cfg_.g_lag_in_frames = 0;
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::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
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30, 1, 0, 140);
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for (int i = 150; i < 800; i += 400) {
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cfg_.rc_target_bitrate = i;
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ResetModel();
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ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.85)
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<< " The datarate for the file is lower than target by too much!";
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ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 1.15)
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<< " The datarate for the file is greater than target by too much!";
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}
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}
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// Check basic rate targeting for CBR.
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TEST_P(DatarateTestLarge, BasicRateTargeting444) {
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::libaom_test::Y4mVideoSource video("rush_hour_444.y4m", 0, 140);
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cfg_.g_profile = 1;
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cfg_.g_timebase = video.timebase();
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cfg_.rc_buf_initial_sz = 500;
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cfg_.rc_buf_optimal_sz = 500;
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cfg_.rc_buf_sz = 1000;
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cfg_.rc_dropframe_thresh = 1;
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cfg_.rc_min_quantizer = 0;
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cfg_.rc_max_quantizer = 63;
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cfg_.rc_end_usage = AOM_CBR;
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for (int i = 250; i < 900; i += 400) {
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cfg_.rc_target_bitrate = i;
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ResetModel();
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ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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ASSERT_GE(static_cast<double>(cfg_.rc_target_bitrate),
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effective_datarate_ * 0.85)
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<< " The datarate for the file exceeds the target by too much!";
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ASSERT_LE(static_cast<double>(cfg_.rc_target_bitrate),
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effective_datarate_ * 1.15)
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<< " The datarate for the file missed the target!"
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<< cfg_.rc_target_bitrate << " " << effective_datarate_;
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}
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}
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// Check that (1) the first dropped frame gets earlier and earlier
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// as the drop frame threshold is increased, and (2) that the total number of
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// frame drops does not decrease as we increase frame drop threshold.
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// Use a lower qp-max to force some frame drops.
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TEST_P(DatarateTestLarge, ChangingDropFrameThresh) {
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cfg_.rc_buf_initial_sz = 500;
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cfg_.rc_buf_optimal_sz = 500;
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cfg_.rc_buf_sz = 1000;
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cfg_.rc_undershoot_pct = 20;
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cfg_.rc_undershoot_pct = 20;
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cfg_.rc_dropframe_thresh = 10;
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cfg_.rc_min_quantizer = 0;
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cfg_.rc_max_quantizer = 50;
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cfg_.rc_end_usage = AOM_CBR;
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cfg_.rc_target_bitrate = 200;
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cfg_.g_lag_in_frames = 0;
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// TODO(marpan): Investigate datarate target failures with a smaller keyframe
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// interval (128).
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cfg_.kf_max_dist = 9999;
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::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
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30, 1, 0, 100);
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const int kDropFrameThreshTestStep = 30;
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aom_codec_pts_t last_drop = 140;
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int last_num_drops = 0;
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for (int i = 40; i < 100; i += kDropFrameThreshTestStep) {
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cfg_.rc_dropframe_thresh = i;
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ResetModel();
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ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.85)
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<< " The datarate for the file is lower than target by too much!";
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ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 1.15)
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<< " The datarate for the file is greater than target by too much!";
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ASSERT_LE(first_drop_, last_drop)
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<< " The first dropped frame for drop_thresh " << i
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<< " > first dropped frame for drop_thresh "
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<< i - kDropFrameThreshTestStep;
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ASSERT_GE(num_drops_, last_num_drops * 0.85)
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<< " The number of dropped frames for drop_thresh " << i
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<< " < number of dropped frames for drop_thresh "
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<< i - kDropFrameThreshTestStep;
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last_drop = first_drop_;
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last_num_drops = num_drops_;
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}
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}
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AV1_INSTANTIATE_TEST_CASE(DatarateTestLarge,
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::testing::Values(::libaom_test::kOnePassGood,
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::libaom_test::kRealTime),
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::testing::Range(2, 9, 2));
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} // namespace
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