/* * Copyright (c) 2024, Alliance for Open Media. All rights reserved * * This source code is subject to the terms of the BSD 3-Clause Clear License * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear * License was not distributed with this source code in the LICENSE file, you * can obtain it at www.aomedia.org/license/software-license/bsd-3-c-c. 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 "iamf/cli/renderer/audio_element_renderer_channel_to_channel.h" #include #include #include "absl/status/status_matchers.h" #include "gmock/gmock.h" #include "gtest/gtest.h" #include "iamf/cli/channel_label.h" #include "iamf/cli/demixing_module.h" #include "iamf/cli/tests/cli_test_utils.h" #include "iamf/obu/audio_element.h" #include "iamf/obu/mix_presentation.h" #include "iamf/obu/types.h" namespace iamf_tools { namespace { using ::absl_testing::IsOk; using enum ChannelAudioLayerConfig::LoudspeakerLayout; using enum ChannelLabel::Label; using enum LoudspeakersSsConventionLayout::SoundSystem; using testing::DoubleEq; using testing::Pointwise; constexpr InternalSampleType kArbitrarySample1 = 0.000012345; constexpr InternalSampleType kArbitrarySample2 = 0.000006789; constexpr InternalSampleType kArbitrarySample3 = 0.000101112; constexpr InternalSampleType kArbitrarySample4 = 0.009999999; constexpr InternalSampleType kArbitrarySample5 = 0.987654321; constexpr InternalSampleType kArbitrarySample6 = 0.000001024; constexpr int kMonoChannelIndex = 0; constexpr int kStereoL2ChannelIndex = 0; constexpr int kStereoR2ChannelIndex = 1; constexpr int k3_1_2LFEChannelIndex = 3; constexpr int k5_1LFEChannelIndex = 3; constexpr int k9_1_6LFEChannelIndex = 3; constexpr size_t kOneSamplePerFrame = 1; const Layout kMonoLayout = { .layout_type = Layout::kLayoutTypeLoudspeakersSsConvention, .specific_layout = LoudspeakersSsConventionLayout{.sound_system = kSoundSystem12_0_1_0}}; const Layout kStereoLayout = { .layout_type = Layout::kLayoutTypeLoudspeakersSsConvention, .specific_layout = LoudspeakersSsConventionLayout{.sound_system = kSoundSystemA_0_2_0}}; const Layout kBinauralLayout = {.layout_type = Layout::kLayoutTypeBinaural}; const Layout k5_1_0Layout = { .layout_type = Layout::kLayoutTypeLoudspeakersSsConvention, .specific_layout = LoudspeakersSsConventionLayout{.sound_system = kSoundSystemB_0_5_0}}; const Layout k5_1_4Layout = { .layout_type = Layout::kLayoutTypeLoudspeakersSsConvention, .specific_layout = LoudspeakersSsConventionLayout{.sound_system = kSoundSystemD_4_5_0}}; const Layout k7_1_4Layout = { .layout_type = Layout::kLayoutTypeLoudspeakersSsConvention, .specific_layout = LoudspeakersSsConventionLayout{.sound_system = kSoundSystemJ_4_7_0}}; const Layout k9_1_6Layout = { .layout_type = Layout::kLayoutTypeLoudspeakersSsConvention, .specific_layout = LoudspeakersSsConventionLayout{.sound_system = kSoundSystem13_6_9_0}}; // The IAMF spec recommends special rules for these 3.1.2 and 7.1.2 layouts. const Layout k7_1_2Layout = { .layout_type = Layout::kLayoutTypeLoudspeakersSsConvention, .specific_layout = LoudspeakersSsConventionLayout{.sound_system = kSoundSystem10_2_7_0}}; const Layout k3_1_2Layout = { .layout_type = Layout::kLayoutTypeLoudspeakersSsConvention, .specific_layout = LoudspeakersSsConventionLayout{.sound_system = kSoundSystem11_2_3_0}}; const ScalableChannelLayoutConfig kBinauralScalableChannelLayoutConfig = { .num_layers = 1, .channel_audio_layer_configs = {{.loudspeaker_layout = kLayoutBinaural}}}; const ScalableChannelLayoutConfig kStereoScalableChannelLayoutConfig = { .num_layers = 1, .channel_audio_layer_configs = {{.loudspeaker_layout = kLayoutStereo}}}; const ScalableChannelLayoutConfig k5_1_0ScalableChannelLayoutConfig = { .num_layers = 1, .channel_audio_layer_configs = {{.loudspeaker_layout = kLayout5_1_ch}}}; const ScalableChannelLayoutConfig k7_1_4ScalableChannelLayoutConfig = { .num_layers = 1, .channel_audio_layer_configs = {{.loudspeaker_layout = kLayout7_1_4_ch}}}; ScalableChannelLayoutConfig GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::ExpandedLoudspeakerLayout expanded_layout) { return {.num_layers = 1, .channel_audio_layer_configs = { {.loudspeaker_layout = kLayoutExpanded, .expanded_loudspeaker_layout = expanded_layout}}}; } TEST(CreateFromScalableChannelLayoutConfig, SupportsDownMixingStereoToMono) { EXPECT_NE(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( kStereoScalableChannelLayoutConfig, kMonoLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, SupportsDownMixing7_1_4To7_1_2) { EXPECT_NE(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( k7_1_4ScalableChannelLayoutConfig, k7_1_2Layout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, SupportsDownMixing7_1_4To3_1_2) { EXPECT_NE(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( k7_1_4ScalableChannelLayoutConfig, k3_1_2Layout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, SupportsDownMixingExpandedLFEToStereo) { EXPECT_NE(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutLFE), kStereoLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, SupportsDownMixingExpandedLFETo7_1_2) { EXPECT_NE(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutLFE), k7_1_2Layout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, DoesNotSupportPassthroughExpandedLFETo7_1_4) { EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutLFE), k7_1_4Layout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, SupportsDownMixingExpandedStereoSToStereo) { EXPECT_NE(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutStereoS), kStereoLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, DoesNotSupportPassthroughExpandedStereoSTo5_1_4) { EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutStereoS), k5_1_4Layout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, SupportsDownMixingExpanded9_1_6ToStereo) { EXPECT_NE(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayout9_1_6_ch), kStereoLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, SupportsDownMixingExpandedStereoSSToStereo) { EXPECT_NE(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutStereoSS), kStereoLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, DoesNotSupportPassthroughExpandedStereoF9_1_6) { EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutStereoF), k9_1_6Layout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, DoesNotSupportExpandedLayoutReserved13ToStereo) { EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutReserved13), kStereoLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, DoesNotSupportExpandedLayoutReserved255ToStereo) { EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutReserved255), kStereoLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, DoesNotSupportBinaural) { EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( kBinauralScalableChannelLayoutConfig, kBinauralLayout, kOneSamplePerFrame), nullptr); EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( kBinauralScalableChannelLayoutConfig, kStereoLayout, kOneSamplePerFrame), nullptr); EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( kStereoScalableChannelLayoutConfig, kBinauralLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, DoesNotSupportReservedLayout) { const Layout kReservedLayout = { .layout_type = Layout::kLayoutTypeReserved0, .specific_layout = LoudspeakersReservedOrBinauralLayout{.reserved = 0}}; EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( kStereoScalableChannelLayoutConfig, kReservedLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, DoesNotSupportPassThroughStereo) { EXPECT_EQ(AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( kStereoScalableChannelLayoutConfig, kStereoLayout, kOneSamplePerFrame), nullptr); } TEST(CreateFromScalableChannelLayoutConfig, IsFinalizedImmediatelyAfterFinalizeCall) { auto renderer = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig(kStereoScalableChannelLayoutConfig, kMonoLayout, kOneSamplePerFrame); ASSERT_NE(renderer, nullptr); EXPECT_THAT(renderer->RenderLabeledFrame( {.label_to_samples = {{kL2, {kArbitrarySample1}}, {kR2, {kArbitrarySample2}}}}), IsOk()); EXPECT_THAT(renderer->Finalize(), IsOk()); EXPECT_TRUE(renderer->IsFinalized()); } TEST(RenderLabeledFrame, ReturnsNumberOfTicks) { const int kNumTicks = 3; auto renderer = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig(kStereoScalableChannelLayoutConfig, kMonoLayout, kNumTicks); ASSERT_NE(renderer, nullptr); const auto num_ticks = renderer->RenderLabeledFrame( {.label_to_samples = { {kL2, std::vector(kNumTicks, kArbitrarySample1)}, {kR2, std::vector(kNumTicks, kArbitrarySample2)}}}); ASSERT_THAT(num_ticks, IsOk()); EXPECT_EQ(*num_ticks, kNumTicks); } TEST(RenderLabeledFrame, RendersStereoToMono) { const std::vector kL2Samples = {50, 100, 10000}; const std::vector kR2Samples = {100, 50, 0}; const std::vector kExpectedMonoSamples = {75, 75, 5000}; auto renderer = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig(kStereoScalableChannelLayoutConfig, kMonoLayout, kL2Samples.size()); std::vector> rendered_samples; RenderAndFlushExpectOk( {.label_to_samples = {{kL2, kL2Samples}, {kR2, kR2Samples}}}, renderer.get(), rendered_samples); EXPECT_THAT(rendered_samples[kMonoChannelIndex], Pointwise(DoubleEq(), kExpectedMonoSamples)); } TEST(RenderLabeledFrame, StereoOutputIsSymmetricWhenInputIsLeftRightSymmetric7_1_4) { auto renderer = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig(k7_1_4ScalableChannelLayoutConfig, kStereoLayout, kOneSamplePerFrame); constexpr InternalSampleType kSymmetricL7R7Input = kArbitrarySample1; constexpr InternalSampleType kSymmetricLss7Rss7Input = kArbitrarySample2; constexpr InternalSampleType kSymmetricLrs7Rss7Input = kArbitrarySample3; constexpr InternalSampleType kSymmetricLtf4Rtf4Input = kArbitrarySample4; constexpr InternalSampleType kSymmetricLtb4Rtb4Input = kArbitrarySample5; std::vector> rendered_samples; RenderAndFlushExpectOk({.label_to_samples = { {kL7, {kSymmetricL7R7Input}}, {kR7, {kSymmetricL7R7Input}}, {kCentre, {0.123456}}, {kLFE, {0.001234}}, {kLss7, {kSymmetricLss7Rss7Input}}, {kRss7, {kSymmetricLss7Rss7Input}}, {kLrs7, {kSymmetricLrs7Rss7Input}}, {kRrs7, {kSymmetricLrs7Rss7Input}}, {kLtf4, {kSymmetricLtf4Rtf4Input}}, {kRtf4, {kSymmetricLtf4Rtf4Input}}, {kLtb4, {kSymmetricLtb4Rtb4Input}}, {kRtb4, {kSymmetricLtb4Rtb4Input}}, }}, renderer.get(), rendered_samples); EXPECT_EQ(rendered_samples.size(), 2); EXPECT_THAT(rendered_samples[kStereoL2ChannelIndex], Pointwise(DoubleEq(), rendered_samples[kStereoR2ChannelIndex])); } TEST(RenderLabeledFrame, PassThroughLFE) { auto renderer = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutLFE), k3_1_2Layout, kOneSamplePerFrame); std::vector> rendered_samples; RenderAndFlushExpectOk({.label_to_samples = {{kLFE, {kArbitrarySample1}}}}, renderer.get(), rendered_samples); EXPECT_THAT(rendered_samples[k3_1_2LFEChannelIndex], Pointwise(DoubleEq(), {kArbitrarySample1})); } TEST(RenderLabeledFrame, LFEPassesThroughFrom9_1_6) { constexpr InternalSampleType kLFESample = 1234.0; auto renderer = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayout9_1_6_ch), k5_1_0Layout, kOneSamplePerFrame); ASSERT_NE(renderer, nullptr); std::vector> rendered_samples; RenderAndFlushExpectOk({.label_to_samples = {{kFL, {kArbitrarySample1}}, {kFR, {kArbitrarySample1}}, {kFC, {kArbitrarySample1}}, {kLFE, {kLFESample}}, {kBL, {kArbitrarySample1}}, {kBR, {kArbitrarySample1}}, {kFLc, {kArbitrarySample1}}, {kFRc, {kArbitrarySample1}}, {kSiL, {kArbitrarySample1}}, {kSiR, {kArbitrarySample1}}, {kTpFL, {kArbitrarySample1}}, {kTpFR, {kArbitrarySample1}}, {kTpBL, {kArbitrarySample1}}, {kTpBR, {kArbitrarySample1}}, {kTpSiL, {kArbitrarySample1}}, {kTpSiR, {kArbitrarySample1}}}}, renderer.get(), rendered_samples); ASSERT_GE(rendered_samples.size(), k5_1LFEChannelIndex); EXPECT_THAT(rendered_samples[k5_1LFEChannelIndex], Pointwise(DoubleEq(), {kLFESample})); } TEST(RenderLabeledFrame, LFEPassesThroughTo9_1_6) { constexpr InternalSampleType kLFESample = 1234.0; auto renderer = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig(k5_1_0ScalableChannelLayoutConfig, k9_1_6Layout, kOneSamplePerFrame); ASSERT_NE(renderer, nullptr); std::vector> rendered_samples; RenderAndFlushExpectOk({.label_to_samples = { {kL5, {kArbitrarySample1}}, {kR5, {kArbitrarySample1}}, {kCentre, {kArbitrarySample1}}, {kLFE, {kLFESample}}, {kLs5, {kArbitrarySample1}}, {kRs5, {kArbitrarySample1}}, }}, renderer.get(), rendered_samples); ASSERT_GE(rendered_samples.size(), k9_1_6LFEChannelIndex); EXPECT_THAT(rendered_samples[k9_1_6LFEChannelIndex], Pointwise(DoubleEq(), {kLFESample})); } TEST(RenderLabeledFrame, PassThroughStereoS) { constexpr int k5_1_0Ls5ChannelIndex = 4; constexpr int k5_1_0Rs5ChannelIndex = 5; auto renderer = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayoutStereoS), k5_1_0Layout, kOneSamplePerFrame); ASSERT_NE(renderer, nullptr); std::vector> rendered_samples; RenderAndFlushExpectOk({.label_to_samples = {{kLs5, {kArbitrarySample1}}, {kRs5, {kArbitrarySample2}}}}, renderer.get(), rendered_samples); EXPECT_DOUBLE_EQ(rendered_samples.size(), 6); EXPECT_THAT(rendered_samples[k5_1_0Ls5ChannelIndex], Pointwise(DoubleEq(), {kArbitrarySample1})); EXPECT_THAT(rendered_samples[k5_1_0Rs5ChannelIndex], Pointwise(DoubleEq(), {kArbitrarySample2})); } struct ExpandedLayoutAndRelatedLoudspeakerLayout { const ChannelAudioLayerConfig::ExpandedLoudspeakerLayout expanded_layout; const LabelSamplesMap expanded_layout_labeled_frame; const ScalableChannelLayoutConfig related_scalable_layout_config; const LabelSamplesMap related_loudspeaker_layout_labeled_frame; const Layout output_layout; }; using ExpandedLayoutAndRelatedLoudspeakerLayoutTest = ::testing::TestWithParam; TEST_P(ExpandedLayoutAndRelatedLoudspeakerLayoutTest, Equivalent) { auto renderer_expanded_layout = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( GetParam().expanded_layout), GetParam().output_layout, kOneSamplePerFrame); auto renderer_related_loudspeaker_layout = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetParam().related_scalable_layout_config, GetParam().output_layout, kOneSamplePerFrame); std::vector> expanded_layout_rendered_samples; RenderAndFlushExpectOk( LabeledFrame{.label_to_samples = GetParam().expanded_layout_labeled_frame}, renderer_expanded_layout.get(), expanded_layout_rendered_samples); std::vector> related_layout_rendered_samples; RenderAndFlushExpectOk( {LabeledFrame{.label_to_samples = GetParam().related_loudspeaker_layout_labeled_frame}}, renderer_related_loudspeaker_layout.get(), related_layout_rendered_samples); EXPECT_THAT(expanded_layout_rendered_samples, InternalSamples2DMatch(related_layout_rendered_samples)); } INSTANTIATE_TEST_SUITE_P( ExpandedLayoutStereoSEquivalentTo5_1_4, ExpandedLayoutAndRelatedLoudspeakerLayoutTest, ::testing::ValuesIn( {{.expanded_layout = ChannelAudioLayerConfig::kExpandedLayoutStereoS, .expanded_layout_labeled_frame = {{kLs5, {kArbitrarySample1}}, {kRs5, {kArbitrarySample2}}}, .related_scalable_layout_config = k5_1_0ScalableChannelLayoutConfig, .related_loudspeaker_layout_labeled_frame = {{kL5, {0}}, {kR5, {0}}, {kCentre, {0}}, {kLFE, {0}}, {kLs5, {kArbitrarySample1}}, {kRs5, {kArbitrarySample2}}}, .output_layout = k3_1_2Layout}})); INSTANTIATE_TEST_SUITE_P( ExpandedLayoutTop4ChEquivalentTo7_1_4, ExpandedLayoutAndRelatedLoudspeakerLayoutTest, ::testing::ValuesIn( {{.expanded_layout = ChannelAudioLayerConfig::kExpandedLayoutTop4Ch, .expanded_layout_labeled_frame = {{kLtf4, {kArbitrarySample1}}, {kRtf4, {kArbitrarySample2}}, {kLtb4, {kArbitrarySample3}}, {kRtb4, {kArbitrarySample4}}}, .related_scalable_layout_config = k7_1_4ScalableChannelLayoutConfig, .related_loudspeaker_layout_labeled_frame = {{kL7, {0}}, {kR7, {0}}, {kCentre, {0}}, {kLFE, {0}}, {kLss7, {0}}, {kRss7, {0}}, {kLrs7, {0}}, {kRrs7, {0}}, {kLtf4, {kArbitrarySample1}}, {kRtf4, {kArbitrarySample2}}, {kLtb4, {kArbitrarySample3}}, {kRtb4, {kArbitrarySample4}}}, .output_layout = k3_1_2Layout}})); INSTANTIATE_TEST_SUITE_P( ExpandedLayoutTop6ChEquivalentTo9_1_6, ExpandedLayoutAndRelatedLoudspeakerLayoutTest, ::testing::ValuesIn( {{.expanded_layout = ChannelAudioLayerConfig::kExpandedLayoutTop6Ch, .expanded_layout_labeled_frame = {{kTpFL, {kArbitrarySample1}}, {kTpFR, {kArbitrarySample2}}, {kTpSiL, {kArbitrarySample3}}, {kTpSiR, {kArbitrarySample4}}, {kTpBL, {kArbitrarySample5}}, {kTpBR, {kArbitrarySample6}}}, .related_scalable_layout_config = GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayout9_1_6_ch), .related_loudspeaker_layout_labeled_frame = {{kFL, {0}}, {kFR, {0}}, {kFC, {0}}, {kLFE, {0}}, {kBL, {0}}, {kBR, {0}}, {kFLc, {0}}, {kFRc, {0}}, {kSiL, {0}}, {kSiR, {0}}, {kTpFL, {kArbitrarySample1}}, {kTpFR, {kArbitrarySample2}}, {kTpSiL, {kArbitrarySample3}}, {kTpSiR, {kArbitrarySample4}}, {kTpBL, {kArbitrarySample5}}, {kTpBR, {kArbitrarySample6}}}, .output_layout = k3_1_2Layout}})); TEST(RenderLabeledFrame, StereoOutputIsSymmetricWhenInputIsLeftRightSymmetric9_1_6) { auto renderer = AudioElementRendererChannelToChannel:: CreateFromScalableChannelLayoutConfig( GetScalableChannelLayoutConfigForExpandedLayoutSoundSystem( ChannelAudioLayerConfig::kExpandedLayout9_1_6_ch), kStereoLayout, kOneSamplePerFrame); constexpr InternalSampleType kSymmetricFLFRInput = kArbitrarySample1; constexpr InternalSampleType kSymmetricBLBRInput = kArbitrarySample2; constexpr InternalSampleType kSymmetricFLcFRcInput = kArbitrarySample3; constexpr InternalSampleType kSymmetricSiLSiRInput = kArbitrarySample4; constexpr InternalSampleType kSymmetricTpFLTpFRInput = kArbitrarySample5; constexpr InternalSampleType kSymmetricTpBLTpBRInput = kArbitrarySample6; constexpr InternalSampleType kSymmetricTpSiLTpSiRInput = 999999999.0; std::vector> rendered_samples; RenderAndFlushExpectOk( {.label_to_samples = {{kFL, {kSymmetricFLFRInput}}, {kFR, {kSymmetricFLFRInput}}, {kFC, {999.0}}, {kLFE, {9999.0}}, {kBL, {kSymmetricBLBRInput}}, {kBR, {kSymmetricBLBRInput}}, {kFLc, {kSymmetricFLcFRcInput}}, {kFRc, {kSymmetricFLcFRcInput}}, {kSiL, {kSymmetricSiLSiRInput}}, {kSiR, {kSymmetricSiLSiRInput}}, {kTpFL, {kSymmetricTpFLTpFRInput}}, {kTpFR, {kSymmetricTpFLTpFRInput}}, {kTpBL, {kSymmetricTpBLTpBRInput}}, {kTpBR, {kSymmetricTpBLTpBRInput}}, {kTpSiL, {kSymmetricTpSiLTpSiRInput}}, {kTpSiR, {kSymmetricTpSiLTpSiRInput}}}}, renderer.get(), rendered_samples); EXPECT_EQ(rendered_samples.size(), 2); EXPECT_THAT(rendered_samples[kStereoL2ChannelIndex], Pointwise(DoubleEq(), rendered_samples[kStereoR2ChannelIndex])); } } // namespace } // namespace iamf_tools