ref: 610e258cc5a9f8093c5d3708d8da8c81ab50bd96
dir: /test/datarate_test.cc/
/*
* Copyright (c) 2012 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "./vpx_config.h"
#include "third_party/googletest/src/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 "vpx/vpx_codec.h"
namespace {
class DatarateTestLarge : public ::libvpx_test::EncoderTest,
public ::libvpx_test::CodecTestWithParam<libvpx_test::TestMode> {
public:
DatarateTestLarge() : EncoderTest(GET_PARAM(0)) {}
virtual ~DatarateTestLarge() {}
protected:
virtual void SetUp() {
InitializeConfig();
SetMode(GET_PARAM(1));
ResetModel();
}
virtual void ResetModel() {
last_pts_ = 0;
bits_in_buffer_model_ = cfg_.rc_target_bitrate * cfg_.rc_buf_initial_sz;
frame_number_ = 0;
first_drop_ = 0;
bits_total_ = 0;
duration_ = 0.0;
denoiser_offon_test_ = 0;
denoiser_offon_period_ = -1;
}
virtual void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
::libvpx_test::Encoder *encoder) {
if (video->frame() == 0)
encoder->Control(VP8E_SET_NOISE_SENSITIVITY, denoiser_on_);
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(VP8E_SET_NOISE_SENSITIVITY, denoiser_on_);
}
const vpx_rational_t tb = video->timebase();
timebase_ = static_cast<double>(tb.num) / tb.den;
duration_ = 0;
}
virtual void FramePktHook(const vpx_codec_cx_pkt_t *pkt) {
// Time since last timestamp = duration.
vpx_codec_pts_t duration = pkt->data.frame.pts - last_pts_;
// TODO(jimbankoski): Remove these lines when the issue:
// http://code.google.com/p/webm/issues/detail?id=496 is fixed.
// For now the codec assumes buffer starts at starting buffer rate
// plus one frame's time.
if (last_pts_ == 0)
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);
/* Test the buffer model here before subtracting the frame. Do so because
* the way the leaky bucket model works in libvpx is to allow the buffer to
* empty - and then stop showing frames until we've got enough bits to
* show one. As noted in comment below (issue 495), this does not currently
* apply to key frames. For now exclude key frames in condition below. */
const bool key_frame = (pkt->data.frame.flags & VPX_FRAME_IS_KEY)
? true: false;
if (!key_frame) {
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;
// Subtract from the buffer the bits associated with a played back frame.
bits_in_buffer_model_ -= frame_size_in_bits;
// Update the running total of bits for end of test datarate checks.
bits_total_ += frame_size_in_bits;
// If first drop not set and we have a drop set it to this time.
if (!first_drop_ && duration > 1)
first_drop_ = last_pts_ + 1;
// Update the most recent pts.
last_pts_ = pkt->data.frame.pts;
// We update this so that we can calculate the datarate minus the last
// frame encoded in the file.
bits_in_last_frame_ = frame_size_in_bits;
++frame_number_;
}
virtual void EndPassHook(void) {
if (bits_total_) {
const double file_size_in_kb = bits_total_ / 1000.; // bits per kilobit
duration_ = (last_pts_ + 1) * timebase_;
// Effective file datarate includes the time spent prebuffering.
effective_datarate_ = (bits_total_ - bits_in_last_frame_) / 1000.0
/ (cfg_.rc_buf_initial_sz / 1000.0 + duration_);
file_datarate_ = file_size_in_kb / duration_;
}
}
vpx_codec_pts_t last_pts_;
int64_t bits_in_buffer_model_;
double timebase_;
int frame_number_;
vpx_codec_pts_t first_drop_;
int64_t bits_total_;
double duration_;
double file_datarate_;
double effective_datarate_;
size_t bits_in_last_frame_;
int denoiser_on_;
int denoiser_offon_test_;
int denoiser_offon_period_;
};
#if CONFIG_TEMPORAL_DENOISING
// Check basic datarate targeting, for a single bitrate, but loop over the
// various denoiser settings.
TEST_P(DatarateTestLarge, DenoiserLevels) {
cfg_.rc_buf_initial_sz = 500;
cfg_.rc_dropframe_thresh = 1;
cfg_.rc_max_quantizer = 56;
cfg_.rc_end_usage = VPX_CBR;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 140);
for (int j = 1; j < 5; ++j) {
// Run over the denoiser levels.
// For the temporal denoiser (#if CONFIG_TEMPORAL_DENOISING) the level j
// refers to the 4 denoiser modes: denoiserYonly, denoiserOnYUV,
// denoiserOnAggressive, and denoiserOnAdaptive.
// For the spatial denoiser (if !CONFIG_TEMPORAL_DENOISING), the level j
// refers to the blur thresholds: 20, 40, 60 80.
// The j = 0 case (denoiser off) is covered in the tests below.
denoiser_on_ = j;
cfg_.rc_target_bitrate = 300;
ResetModel();
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(cfg_.rc_target_bitrate, effective_datarate_ * 0.95)
<< " The datarate for the file exceeds the target!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.3)
<< " The datarate for the file missed the target!";
}
}
// Check basic datarate targeting, for a single bitrate, when denoiser is off
// and on.
TEST_P(DatarateTestLarge, DenoiserOffOn) {
cfg_.rc_buf_initial_sz = 500;
cfg_.rc_dropframe_thresh = 1;
cfg_.rc_max_quantizer = 56;
cfg_.rc_end_usage = VPX_CBR;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 299);
cfg_.rc_target_bitrate = 300;
ResetModel();
// The denoiser is off by default.
denoiser_on_ = 0;
// Set the offon test flag.
denoiser_offon_test_ = 1;
denoiser_offon_period_ = 100;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(cfg_.rc_target_bitrate, effective_datarate_ * 0.95)
<< " The datarate for the file exceeds the target!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.3)
<< " The datarate for the file missed the target!";
}
#endif // CONFIG_TEMPORAL_DENOISING
TEST_P(DatarateTestLarge, BasicBufferModel) {
denoiser_on_ = 0;
cfg_.rc_buf_initial_sz = 500;
cfg_.rc_dropframe_thresh = 1;
cfg_.rc_max_quantizer = 56;
cfg_.rc_end_usage = VPX_CBR;
// 2 pass cbr datarate control has a bug hidden by the small # of
// frames selected in this encode. The problem is that even if the buffer is
// negative we produce a keyframe on a cutscene. Ignoring datarate
// constraints
// TODO(jimbankoski): ( Fix when issue
// http://code.google.com/p/webm/issues/detail?id=495 is addressed. )
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 140);
// There is an issue for low bitrates in real-time mode, where the
// effective_datarate slightly overshoots the target bitrate.
// This is same the issue as noted about (#495).
// TODO(jimbankoski/marpan): Update test to run for lower bitrates (< 100),
// when the issue is resolved.
for (int i = 100; i < 800; i += 200) {
cfg_.rc_target_bitrate = i;
ResetModel();
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(cfg_.rc_target_bitrate, effective_datarate_ * 0.95)
<< " The datarate for the file exceeds the target!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.3)
<< " The datarate for the file missed the target!";
}
}
TEST_P(DatarateTestLarge, ChangingDropFrameThresh) {
denoiser_on_ = 0;
cfg_.rc_buf_initial_sz = 500;
cfg_.rc_max_quantizer = 36;
cfg_.rc_end_usage = VPX_CBR;
cfg_.rc_target_bitrate = 200;
cfg_.kf_mode = VPX_KF_DISABLED;
const int frame_count = 40;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, frame_count);
// Here we check that the first dropped frame gets earlier and earlier
// as the drop frame threshold is increased.
const int kDropFrameThreshTestStep = 30;
vpx_codec_pts_t last_drop = frame_count;
for (int i = 1; i < 91; i += kDropFrameThreshTestStep) {
cfg_.rc_dropframe_thresh = i;
ResetModel();
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_LE(first_drop_, last_drop)
<< " The first dropped frame for drop_thresh " << i
<< " > first dropped frame for drop_thresh "
<< i - kDropFrameThreshTestStep;
last_drop = first_drop_;
}
}
class DatarateTestVP9Large : public ::libvpx_test::EncoderTest,
public ::libvpx_test::CodecTestWith2Params<libvpx_test::TestMode, int> {
public:
DatarateTestVP9Large() : EncoderTest(GET_PARAM(0)) {}
protected:
virtual ~DatarateTestVP9Large() {}
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;
// For testing up to 3 layers.
for (int i = 0; i < 3; ++i) {
bits_total_[i] = 0;
}
denoiser_offon_test_ = 0;
denoiser_offon_period_ = -1;
}
//
// Frame flags and layer id for temporal layers.
//
// For two layers, test pattern is:
// 1 3
// 0 2 .....
// For three layers, test pattern is:
// 1 3 5 7
// 2 6
// 0 4 ....
// LAST is always update on base/layer 0, GOLDEN is updated on layer 1.
// For this 3 layer example, the 2nd enhancement layer (layer 2) does not
// update any reference frames.
int SetFrameFlags(int frame_num, int num_temp_layers) {
int frame_flags = 0;
if (num_temp_layers == 2) {
if (frame_num % 2 == 0) {
// Layer 0: predict from L and ARF, update L.
frame_flags = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF |
VP8_EFLAG_NO_UPD_ARF;
} else {
// Layer 1: predict from L, G and ARF, and update G.
frame_flags = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
VP8_EFLAG_NO_UPD_ENTROPY;
}
} else if (num_temp_layers == 3) {
if (frame_num % 4 == 0) {
// Layer 0: predict from L and ARF; update L.
frame_flags = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
VP8_EFLAG_NO_REF_GF;
} else if ((frame_num - 2) % 4 == 0) {
// Layer 1: predict from L, G, ARF; update G.
frame_flags = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
} else if ((frame_num - 1) % 2 == 0) {
// Layer 2: predict from L, G, ARF; update none.
frame_flags = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
VP8_EFLAG_NO_UPD_LAST;
}
}
return frame_flags;
}
int SetLayerId(int frame_num, int num_temp_layers) {
int layer_id = 0;
if (num_temp_layers == 2) {
if (frame_num % 2 == 0) {
layer_id = 0;
} else {
layer_id = 1;
}
} else if (num_temp_layers == 3) {
if (frame_num % 4 == 0) {
layer_id = 0;
} else if ((frame_num - 2) % 4 == 0) {
layer_id = 1;
} else if ((frame_num - 1) % 2 == 0) {
layer_id = 2;
}
}
return layer_id;
}
virtual void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
::libvpx_test::Encoder *encoder) {
if (video->frame() == 0)
encoder->Control(VP8E_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(VP9E_SET_NOISE_SENSITIVITY, denoiser_on_);
if (cfg_.ts_number_layers > 1) {
if (video->frame() == 0) {
encoder->Control(VP9E_SET_SVC, 1);
}
vpx_svc_layer_id_t layer_id;
layer_id.spatial_layer_id = 0;
frame_flags_ = SetFrameFlags(video->frame(), cfg_.ts_number_layers);
layer_id.temporal_layer_id = SetLayerId(video->frame(),
cfg_.ts_number_layers);
encoder->Control(VP9E_SET_SVC_LAYER_ID, &layer_id);
}
const vpx_rational_t tb = video->timebase();
timebase_ = static_cast<double>(tb.num) / tb.den;
duration_ = 0;
}
virtual void FramePktHook(const vpx_codec_cx_pkt_t *pkt) {
// Time since last timestamp = duration.
vpx_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);
}
int layer = SetLayerId(tot_frame_number_, cfg_.ts_number_layers);
// 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. For temporal layers, update the cumulative
// encoded bits per layer.
for (int i = layer; i < static_cast<int>(cfg_.ts_number_layers); ++i) {
bits_total_[i] += frame_size_in_bits;
}
// Update the most recent pts.
last_pts_ = pkt->data.frame.pts;
++frame_number_;
++tot_frame_number_;
}
virtual void EndPassHook(void) {
for (int layer = 0; layer < static_cast<int>(cfg_.ts_number_layers);
++layer) {
duration_ = (last_pts_ + 1) * timebase_;
if (bits_total_[layer]) {
// Effective file datarate:
effective_datarate_[layer] = (bits_total_[layer] / 1000.0) / duration_;
}
}
}
vpx_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_[3];
double duration_;
double effective_datarate_[3];
int set_cpu_used_;
int64_t bits_in_buffer_model_;
vpx_codec_pts_t first_drop_;
int num_drops_;
int denoiser_on_;
int denoiser_offon_test_;
int denoiser_offon_period_;
};
// Check basic rate targeting,
TEST_P(DatarateTestVP9Large, 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 = VPX_CBR;
cfg_.g_lag_in_frames = 0;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 140);
for (int i = 150; i < 800; i += 200) {
cfg_.rc_target_bitrate = i;
ResetModel();
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(effective_datarate_[0], cfg_.rc_target_bitrate * 0.85)
<< " The datarate for the file is lower than target by too much!";
ASSERT_LE(effective_datarate_[0], cfg_.rc_target_bitrate * 1.15)
<< " The datarate for the file is greater than target by too much!";
}
}
// Check basic rate targeting,
TEST_P(DatarateTestVP9Large, BasicRateTargeting444) {
::libvpx_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 = VPX_CBR;
for (int i = 250; i < 900; i += 200) {
cfg_.rc_target_bitrate = i;
ResetModel();
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(static_cast<double>(cfg_.rc_target_bitrate),
effective_datarate_[0] * 0.85)
<< " The datarate for the file exceeds the target by too much!";
ASSERT_LE(static_cast<double>(cfg_.rc_target_bitrate),
effective_datarate_[0] * 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(DatarateTestVP9Large, 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 = VPX_CBR;
cfg_.rc_target_bitrate = 200;
cfg_.g_lag_in_frames = 0;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 140);
const int kDropFrameThreshTestStep = 30;
vpx_codec_pts_t last_drop = 140;
int last_num_drops = 0;
for (int i = 10; i < 100; i += kDropFrameThreshTestStep) {
cfg_.rc_dropframe_thresh = i;
ResetModel();
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(effective_datarate_[0], cfg_.rc_target_bitrate * 0.85)
<< " The datarate for the file is lower than target by too much!";
ASSERT_LE(effective_datarate_[0], 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 * 0.90)
<< " 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_;
}
}
// Check basic rate targeting for 2 temporal layers.
TEST_P(DatarateTestVP9Large, BasicRateTargeting2TemporalLayers) {
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 = VPX_CBR;
cfg_.g_lag_in_frames = 0;
// 2 Temporal layers, no spatial layers: Framerate decimation (2, 1).
cfg_.ss_number_layers = 1;
cfg_.ts_number_layers = 2;
cfg_.ts_rate_decimator[0] = 2;
cfg_.ts_rate_decimator[1] = 1;
cfg_.temporal_layering_mode = VP9E_TEMPORAL_LAYERING_MODE_BYPASS;
if (deadline_ == VPX_DL_REALTIME)
cfg_.g_error_resilient = 1;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 200);
for (int i = 200; i <= 800; i += 200) {
cfg_.rc_target_bitrate = i;
ResetModel();
// 60-40 bitrate allocation for 2 temporal layers.
cfg_.layer_target_bitrate[0] = 60 * cfg_.rc_target_bitrate / 100;
cfg_.layer_target_bitrate[1] = cfg_.rc_target_bitrate;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
for (int j = 0; j < static_cast<int>(cfg_.ts_number_layers); ++j) {
ASSERT_GE(effective_datarate_[j], cfg_.layer_target_bitrate[j] * 0.85)
<< " The datarate for the file is lower than target by too much, "
"for layer: " << j;
ASSERT_LE(effective_datarate_[j], cfg_.layer_target_bitrate[j] * 1.15)
<< " The datarate for the file is greater than target by too much, "
"for layer: " << j;
}
}
}
// Check basic rate targeting for 3 temporal layers.
TEST_P(DatarateTestVP9Large, BasicRateTargeting3TemporalLayers) {
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 = VPX_CBR;
cfg_.g_lag_in_frames = 0;
// 3 Temporal layers, no spatial layers: Framerate decimation (4, 2, 1).
cfg_.ss_number_layers = 1;
cfg_.ts_number_layers = 3;
cfg_.ts_rate_decimator[0] = 4;
cfg_.ts_rate_decimator[1] = 2;
cfg_.ts_rate_decimator[2] = 1;
cfg_.temporal_layering_mode = VP9E_TEMPORAL_LAYERING_MODE_BYPASS;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 200);
for (int i = 200; i <= 800; i += 200) {
cfg_.rc_target_bitrate = i;
ResetModel();
// 40-20-40 bitrate allocation for 3 temporal layers.
cfg_.layer_target_bitrate[0] = 40 * cfg_.rc_target_bitrate / 100;
cfg_.layer_target_bitrate[1] = 60 * cfg_.rc_target_bitrate / 100;
cfg_.layer_target_bitrate[2] = cfg_.rc_target_bitrate;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
for (int j = 0; j < static_cast<int>(cfg_.ts_number_layers); ++j) {
// TODO(yaowu): Work out more stable rc control strategy and
// Adjust the thresholds to be tighter than .75.
ASSERT_GE(effective_datarate_[j], cfg_.layer_target_bitrate[j] * 0.75)
<< " The datarate for the file is lower than target by too much, "
"for layer: " << j;
// TODO(yaowu): Work out more stable rc control strategy and
// Adjust the thresholds to be tighter than 1.25.
ASSERT_LE(effective_datarate_[j], cfg_.layer_target_bitrate[j] * 1.25)
<< " The datarate for the file is greater than target by too much, "
"for layer: " << j;
}
}
}
// Check basic rate targeting for 3 temporal layers, with frame dropping.
// Only for one (low) bitrate with lower max_quantizer, and somewhat higher
// frame drop threshold, to force frame dropping.
TEST_P(DatarateTestVP9Large, BasicRateTargeting3TemporalLayersFrameDropping) {
cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000;
// Set frame drop threshold and rc_max_quantizer to force some frame drops.
cfg_.rc_dropframe_thresh = 20;
cfg_.rc_max_quantizer = 45;
cfg_.rc_min_quantizer = 0;
cfg_.rc_end_usage = VPX_CBR;
cfg_.g_lag_in_frames = 0;
// 3 Temporal layers, no spatial layers: Framerate decimation (4, 2, 1).
cfg_.ss_number_layers = 1;
cfg_.ts_number_layers = 3;
cfg_.ts_rate_decimator[0] = 4;
cfg_.ts_rate_decimator[1] = 2;
cfg_.ts_rate_decimator[2] = 1;
cfg_.temporal_layering_mode = VP9E_TEMPORAL_LAYERING_MODE_BYPASS;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 200);
cfg_.rc_target_bitrate = 200;
ResetModel();
// 40-20-40 bitrate allocation for 3 temporal layers.
cfg_.layer_target_bitrate[0] = 40 * cfg_.rc_target_bitrate / 100;
cfg_.layer_target_bitrate[1] = 60 * cfg_.rc_target_bitrate / 100;
cfg_.layer_target_bitrate[2] = cfg_.rc_target_bitrate;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
for (int j = 0; j < static_cast<int>(cfg_.ts_number_layers); ++j) {
ASSERT_GE(effective_datarate_[j], cfg_.layer_target_bitrate[j] * 0.85)
<< " The datarate for the file is lower than target by too much, "
"for layer: " << j;
ASSERT_LE(effective_datarate_[j], cfg_.layer_target_bitrate[j] * 1.15)
<< " The datarate for the file is greater than target by too much, "
"for layer: " << j;
// Expect some frame drops in this test: for this 200 frames test,
// expect at least 10% and not more than 60% drops.
ASSERT_GE(num_drops_, 20);
ASSERT_LE(num_drops_, 130);
}
}
#if CONFIG_VP9_TEMPORAL_DENOISING
// Check basic datarate targeting, for a single bitrate, when denoiser is on.
TEST_P(DatarateTestVP9Large, DenoiserLevels) {
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 = 2;
cfg_.rc_max_quantizer = 56;
cfg_.rc_end_usage = VPX_CBR;
cfg_.g_lag_in_frames = 0;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 140);
// For the temporal denoiser (#if CONFIG_VP9_TEMPORAL_DENOISING),
// there is only one denoiser mode: denoiserYonly(which is 1),
// but may add more modes in the future.
cfg_.rc_target_bitrate = 300;
ResetModel();
// Turn on the denoiser.
denoiser_on_ = 1;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(effective_datarate_[0], cfg_.rc_target_bitrate * 0.85)
<< " The datarate for the file is lower than target by too much!";
ASSERT_LE(effective_datarate_[0], cfg_.rc_target_bitrate * 1.15)
<< " The datarate for the file is greater than target by too much!";
}
// Check basic datarate targeting, for a single bitrate, when denoiser is off
// and on.
TEST_P(DatarateTestVP9Large, DenoiserOffOn) {
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 = 2;
cfg_.rc_max_quantizer = 56;
cfg_.rc_end_usage = VPX_CBR;
cfg_.g_lag_in_frames = 0;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 299);
// For the temporal denoiser (#if CONFIG_VP9_TEMPORAL_DENOISING),
// there is only one denoiser mode: denoiserYonly(which is 1),
// but may add more modes in the future.
cfg_.rc_target_bitrate = 300;
ResetModel();
// The denoiser is off by default.
denoiser_on_ = 0;
// Set the offon test flag.
denoiser_offon_test_ = 1;
denoiser_offon_period_ = 100;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(effective_datarate_[0], cfg_.rc_target_bitrate * 0.85)
<< " The datarate for the file is lower than target by too much!";
ASSERT_LE(effective_datarate_[0], cfg_.rc_target_bitrate * 1.15)
<< " The datarate for the file is greater than target by too much!";
}
#endif // CONFIG_VP9_TEMPORAL_DENOISING
class DatarateOnePassCbrSvc : public ::libvpx_test::EncoderTest,
public ::libvpx_test::CodecTestWith2Params<libvpx_test::TestMode, int> {
public:
DatarateOnePassCbrSvc() : EncoderTest(GET_PARAM(0)) {}
virtual ~DatarateOnePassCbrSvc() {}
protected:
virtual void SetUp() {
InitializeConfig();
SetMode(GET_PARAM(1));
speed_setting_ = 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;
first_drop_ = 0;
bits_total_ = 0;
duration_ = 0.0;
}
virtual void BeginPassHook(unsigned int /*pass*/) {
}
virtual void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
::libvpx_test::Encoder *encoder) {
if (video->frame() == 0) {
int i;
for (i = 0; i < 2; ++i) {
svc_params_.max_quantizers[i] = 63;
svc_params_.min_quantizers[i] = 0;
}
svc_params_.scaling_factor_num[0] = 144;
svc_params_.scaling_factor_den[0] = 288;
svc_params_.scaling_factor_num[1] = 288;
svc_params_.scaling_factor_den[1] = 288;
encoder->Control(VP9E_SET_SVC, 1);
encoder->Control(VP9E_SET_SVC_PARAMETERS, &svc_params_);
encoder->Control(VP8E_SET_CPUUSED, speed_setting_);
encoder->Control(VP9E_SET_TILE_COLUMNS, 0);
encoder->Control(VP8E_SET_MAX_INTRA_BITRATE_PCT, 300);
}
const vpx_rational_t tb = video->timebase();
timebase_ = static_cast<double>(tb.num) / tb.den;
duration_ = 0;
}
virtual void FramePktHook(const vpx_codec_cx_pkt_t *pkt) {
vpx_codec_pts_t duration = pkt->data.frame.pts - last_pts_;
if (last_pts_ == 0)
duration = 1;
bits_in_buffer_model_ += static_cast<int64_t>(
duration * timebase_ * cfg_.rc_target_bitrate * 1000);
const bool key_frame = (pkt->data.frame.flags & VPX_FRAME_IS_KEY)
? true: false;
if (!key_frame) {
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;
bits_in_buffer_model_ -= frame_size_in_bits;
bits_total_ += frame_size_in_bits;
if (!first_drop_ && duration > 1)
first_drop_ = last_pts_ + 1;
last_pts_ = pkt->data.frame.pts;
bits_in_last_frame_ = frame_size_in_bits;
++frame_number_;
}
virtual void EndPassHook(void) {
if (bits_total_) {
const double file_size_in_kb = bits_total_ / 1000.; // bits per kilobit
duration_ = (last_pts_ + 1) * timebase_;
effective_datarate_ = (bits_total_ - bits_in_last_frame_) / 1000.0
/ (cfg_.rc_buf_initial_sz / 1000.0 + duration_);
file_datarate_ = file_size_in_kb / duration_;
}
}
vpx_codec_pts_t last_pts_;
int64_t bits_in_buffer_model_;
double timebase_;
int frame_number_;
vpx_codec_pts_t first_drop_;
int64_t bits_total_;
double duration_;
double file_datarate_;
double effective_datarate_;
size_t bits_in_last_frame_;
vpx_svc_extra_cfg_t svc_params_;
int speed_setting_;
};
static void assign_layer_bitrates(vpx_codec_enc_cfg_t *const enc_cfg,
const vpx_svc_extra_cfg_t *svc_params,
int spatial_layers,
int temporal_layers,
int temporal_layering_mode,
unsigned int total_rate) {
int sl, spatial_layer_target;
float total = 0;
float alloc_ratio[VPX_MAX_LAYERS] = {0};
for (sl = 0; sl < spatial_layers; ++sl) {
if (svc_params->scaling_factor_den[sl] > 0) {
alloc_ratio[sl] = (float)(svc_params->scaling_factor_num[sl] *
1.0 / svc_params->scaling_factor_den[sl]);
total += alloc_ratio[sl];
}
}
for (sl = 0; sl < spatial_layers; ++sl) {
enc_cfg->ss_target_bitrate[sl] = spatial_layer_target =
(unsigned int)(enc_cfg->rc_target_bitrate *
alloc_ratio[sl] / total);
const int index = sl * temporal_layers;
if (temporal_layering_mode == 3) {
enc_cfg->layer_target_bitrate[index] =
spatial_layer_target >> 1;
enc_cfg->layer_target_bitrate[index + 1] =
(spatial_layer_target >> 1) + (spatial_layer_target >> 2);
enc_cfg->layer_target_bitrate[index + 2] =
spatial_layer_target;
} else if (temporal_layering_mode == 2) {
enc_cfg->layer_target_bitrate[index] =
spatial_layer_target * 2 / 3;
enc_cfg->layer_target_bitrate[index + 1] =
spatial_layer_target;
}
}
}
// Check basic rate targeting for 1 pass CBR SVC: 2 spatial layers and
// 3 temporal layers.
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc) {
cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000;
cfg_.rc_min_quantizer = 0;
cfg_.rc_max_quantizer = 63;
cfg_.rc_end_usage = VPX_CBR;
cfg_.g_lag_in_frames = 0;
cfg_.ss_number_layers = 2;
cfg_.ts_number_layers = 3;
cfg_.ts_rate_decimator[0] = 4;
cfg_.ts_rate_decimator[1] = 2;
cfg_.ts_rate_decimator[2] = 1;
cfg_.g_error_resilient = 1;
cfg_.temporal_layering_mode = 3;
svc_params_.scaling_factor_num[0] = 144;
svc_params_.scaling_factor_den[0] = 288;
svc_params_.scaling_factor_num[1] = 288;
svc_params_.scaling_factor_den[1] = 288;
// TODO(wonkap/marpan): No frame drop for now, we need to implement correct
// frame dropping for SVC.
cfg_.rc_dropframe_thresh = 0;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 200);
// TODO(wonkap/marpan): Check that effective_datarate for each layer hits the
// layer target_bitrate. Also check if test can pass at lower bitrate (~200k).
for (int i = 400; i <= 800; i += 200) {
cfg_.rc_target_bitrate = i;
ResetModel();
assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers,
cfg_.ts_number_layers, cfg_.temporal_layering_mode,
cfg_.rc_target_bitrate);
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(cfg_.rc_target_bitrate, effective_datarate_ * 0.85)
<< " The datarate for the file exceeds the target by too much!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.15)
<< " The datarate for the file is lower than the target by too much!";
}
}
VP8_INSTANTIATE_TEST_CASE(DatarateTestLarge, ALL_TEST_MODES);
VP9_INSTANTIATE_TEST_CASE(DatarateTestVP9Large,
::testing::Values(::libvpx_test::kOnePassGood,
::libvpx_test::kRealTime),
::testing::Range(2, 7));
VP9_INSTANTIATE_TEST_CASE(DatarateOnePassCbrSvc,
::testing::Values(::libvpx_test::kRealTime),
::testing::Range(5, 8));
} // namespace