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| 1 | +// Copyright 2025 Google LLC |
| 2 | +// SPDX-License-Identifier: BSD-2-Clause |
| 3 | + |
| 4 | +#include <cstdlib> |
| 5 | +#include <tuple> |
| 6 | +#include <vector> |
| 7 | + |
| 8 | +#include "avif/avif.h" |
| 9 | +#include "avif/internal.h" |
| 10 | +#include "aviftest_helpers.h" |
| 11 | +#include "gtest/gtest.h" |
| 12 | + |
| 13 | +namespace avif { |
| 14 | +namespace { |
| 15 | + |
| 16 | +bool SvtAv1SupportsLossless() { |
| 17 | + const char* version = avifCodecVersionSvt(); // "vX.Y.Z" expected. |
| 18 | + if (version == nullptr || version[0] != 'v') return false; |
| 19 | + const int major_version = std::atoi(version + 1); |
| 20 | + // EbSvtAv1EncConfiguration::lossless was introduced in SVT-AV1 version 3.0.0. |
| 21 | + return major_version >= 3; |
| 22 | +} |
| 23 | + |
| 24 | +class SvtAv1Test : public testing::TestWithParam<std::tuple</*quality=*/int>> { |
| 25 | +}; |
| 26 | + |
| 27 | +TEST_P(SvtAv1Test, EncodeDecodeStillImage) { |
| 28 | + const int quality = std::get<0>(GetParam()); |
| 29 | + |
| 30 | + ASSERT_NE(avifCodecName(AVIF_CODEC_CHOICE_SVT, AVIF_CODEC_FLAG_CAN_ENCODE), |
| 31 | + nullptr); |
| 32 | + if (!testutil::Av1DecoderAvailable()) { |
| 33 | + GTEST_SKIP() << "Decoder unavailable, skip test."; |
| 34 | + } |
| 35 | + |
| 36 | + // AVIF_CODEC_CHOICE_SVT requires dimensions to be at least 64 pixels. |
| 37 | + ImagePtr image = |
| 38 | + testutil::CreateImage(/*width=*/64, /*height=*/64, /*depth=*/8, |
| 39 | + AVIF_PIXEL_FORMAT_YUV420, AVIF_PLANES_YUV); |
| 40 | + ASSERT_NE(image, nullptr); |
| 41 | + testutil::FillImageGradient(image.get()); |
| 42 | + if (quality == AVIF_QUALITY_LOSSLESS) { |
| 43 | + image->matrixCoefficients = AVIF_MATRIX_COEFFICIENTS_IDENTITY; |
| 44 | + } |
| 45 | + |
| 46 | + EncoderPtr encoder(avifEncoderCreate()); |
| 47 | + ASSERT_NE(encoder, nullptr); |
| 48 | + encoder->codecChoice = AVIF_CODEC_CHOICE_SVT; |
| 49 | + encoder->quality = quality; |
| 50 | + encoder->qualityAlpha = quality; |
| 51 | + testutil::AvifRwData encoded; |
| 52 | + ASSERT_EQ(avifEncoderWrite(encoder.get(), image.get(), &encoded), |
| 53 | + AVIF_RESULT_OK); |
| 54 | + |
| 55 | + DecoderPtr decoder(avifDecoderCreate()); |
| 56 | + ASSERT_NE(decoder, nullptr); |
| 57 | + ImagePtr decoded(avifImageCreateEmpty()); |
| 58 | + ASSERT_NE(decoded, nullptr); |
| 59 | + ASSERT_EQ(avifDecoderReadMemory(decoder.get(), decoded.get(), encoded.data, |
| 60 | + encoded.size), |
| 61 | + AVIF_RESULT_OK); |
| 62 | + |
| 63 | + if (quality == AVIF_QUALITY_LOSSLESS && SvtAv1SupportsLossless()) { |
| 64 | + EXPECT_TRUE(testutil::AreImagesEqual(*image, *decoded)); |
| 65 | + } else { |
| 66 | + EXPECT_GT(testutil::GetPsnr(*image, *decoded), 20.0); |
| 67 | + } |
| 68 | +} |
| 69 | + |
| 70 | +TEST_P(SvtAv1Test, EncodeDecodeSequence) { |
| 71 | + const int quality = std::get<0>(GetParam()); |
| 72 | + |
| 73 | + ASSERT_NE(avifCodecName(AVIF_CODEC_CHOICE_SVT, AVIF_CODEC_FLAG_CAN_ENCODE), |
| 74 | + nullptr); |
| 75 | + if (!testutil::Av1DecoderAvailable()) { |
| 76 | + GTEST_SKIP() << "Decoder unavailable, skip test."; |
| 77 | + } |
| 78 | + |
| 79 | + std::vector<ImagePtr> sequence; |
| 80 | + sequence.reserve(3); |
| 81 | + for (uint32_t i = 0; i < sequence.capacity(); ++i) { |
| 82 | + // AVIF_CODEC_CHOICE_SVT requires dimensions to be at least 64 pixels. |
| 83 | + sequence.push_back( |
| 84 | + testutil::CreateImage(/*width=*/64, /*height=*/64, /*depth=*/8, |
| 85 | + AVIF_PIXEL_FORMAT_YUV420, AVIF_PLANES_ALL)); |
| 86 | + ASSERT_NE(sequence.back(), nullptr); |
| 87 | + // Generate different frames. |
| 88 | + testutil::FillImageGradient(sequence.back().get(), |
| 89 | + /*offset=*/static_cast<int>(i) * 100); |
| 90 | + if (quality == AVIF_QUALITY_LOSSLESS) { |
| 91 | + sequence.back()->matrixCoefficients = AVIF_MATRIX_COEFFICIENTS_IDENTITY; |
| 92 | + } |
| 93 | + } |
| 94 | + |
| 95 | + EncoderPtr encoder(avifEncoderCreate()); |
| 96 | + ASSERT_NE(encoder, nullptr); |
| 97 | + encoder->codecChoice = AVIF_CODEC_CHOICE_SVT; |
| 98 | + encoder->quality = quality; |
| 99 | + encoder->qualityAlpha = quality; |
| 100 | + for (const ImagePtr& image : sequence) { |
| 101 | + ASSERT_EQ(avifEncoderAddImage(encoder.get(), image.get(), |
| 102 | + /*durationInTimescales=*/1, |
| 103 | + AVIF_ADD_IMAGE_FLAG_NONE), |
| 104 | + AVIF_RESULT_OK); |
| 105 | + } |
| 106 | + testutil::AvifRwData encoded; |
| 107 | + ASSERT_EQ(avifEncoderFinish(encoder.get(), &encoded), AVIF_RESULT_OK); |
| 108 | + |
| 109 | + DecoderPtr decoder(avifDecoderCreate()); |
| 110 | + ASSERT_NE(decoder, nullptr); |
| 111 | + ASSERT_EQ(avifDecoderSetIOMemory(decoder.get(), encoded.data, encoded.size), |
| 112 | + AVIF_RESULT_OK); |
| 113 | + ASSERT_EQ(avifDecoderParse(decoder.get()), AVIF_RESULT_OK); |
| 114 | + for (const ImagePtr& image : sequence) { |
| 115 | + ASSERT_EQ(avifDecoderNextImage(decoder.get()), AVIF_RESULT_OK); |
| 116 | + if (quality == AVIF_QUALITY_LOSSLESS && SvtAv1SupportsLossless()) { |
| 117 | + EXPECT_TRUE(testutil::AreImagesEqual(*image, *decoder->image)); |
| 118 | + } else { |
| 119 | + EXPECT_GT(testutil::GetPsnr(*image, *decoder->image), 20.0); |
| 120 | + } |
| 121 | + } |
| 122 | +} |
| 123 | + |
| 124 | +INSTANTIATE_TEST_SUITE_P(All, SvtAv1Test, |
| 125 | + testing::Combine(testing::Values( |
| 126 | + AVIF_QUALITY_DEFAULT, AVIF_QUALITY_WORST, |
| 127 | + AVIF_QUALITY_BEST - 1, AVIF_QUALITY_LOSSLESS))); |
| 128 | + |
| 129 | +} // namespace |
| 130 | +} // namespace avif |
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