// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/base/decode_capabilities.h"

#include "testing/gtest/include/gtest/gtest.h"

namespace media {

TEST(DecodeCapabilitiesTest, IsSupportedVideoConfigBasics) {
  // Default to common 709.
  const media::VideoColorSpace kColorSpace = media::VideoColorSpace::REC709();

  // Some codecs do not have a notion of level.
  const int kUnspecifiedLevel = 0;

  // Expect support for baseline configuration of known codecs.
  EXPECT_TRUE(IsSupportedVideoConfig(
      {media::kCodecH264, media::H264PROFILE_BASELINE, 1, kColorSpace}));
  EXPECT_TRUE(IsSupportedVideoConfig({media::kCodecVP8, media::VP8PROFILE_ANY,
                                      kUnspecifiedLevel, kColorSpace}));
  EXPECT_TRUE(
      IsSupportedVideoConfig({media::kCodecVP9, media::VP9PROFILE_PROFILE0,
                              kUnspecifiedLevel, kColorSpace}));
  EXPECT_TRUE(IsSupportedVideoConfig({media::kCodecTheora,
                                      media::VIDEO_CODEC_PROFILE_UNKNOWN,
                                      kUnspecifiedLevel, kColorSpace}));

  // Expect non-support for the following.
  EXPECT_FALSE(IsSupportedVideoConfig({media::kUnknownVideoCodec,
                                       media::VIDEO_CODEC_PROFILE_UNKNOWN,
                                       kUnspecifiedLevel, kColorSpace}));
  EXPECT_FALSE(IsSupportedVideoConfig({media::kCodecVC1,
                                       media::VIDEO_CODEC_PROFILE_UNKNOWN,
                                       kUnspecifiedLevel, kColorSpace}));
  EXPECT_FALSE(IsSupportedVideoConfig({media::kCodecMPEG2,
                                       media::VIDEO_CODEC_PROFILE_UNKNOWN,
                                       kUnspecifiedLevel, kColorSpace}));
  EXPECT_FALSE(IsSupportedVideoConfig({media::kCodecMPEG4,
                                       media::VIDEO_CODEC_PROFILE_UNKNOWN,
                                       kUnspecifiedLevel, kColorSpace}));
  EXPECT_FALSE(IsSupportedVideoConfig({media::kCodecHEVC,
                                       media::VIDEO_CODEC_PROFILE_UNKNOWN,
                                       kUnspecifiedLevel, kColorSpace}));
}

TEST(DecodeCapabilitiesTest, IsSupportedVideoConfig_VP9TransferFunctions) {
  size_t num_found = 0;
  // TODO(hubbe): Verify support for HDR codecs when color management enabled.
  const std::set<media::VideoColorSpace::TransferID> kSupportedTransfers = {
      media::VideoColorSpace::TransferID::GAMMA22,
      media::VideoColorSpace::TransferID::UNSPECIFIED,
      media::VideoColorSpace::TransferID::BT709,
      media::VideoColorSpace::TransferID::SMPTE170M,
      media::VideoColorSpace::TransferID::BT2020_10,
      media::VideoColorSpace::TransferID::BT2020_12,
      media::VideoColorSpace::TransferID::IEC61966_2_1,
  };

  for (int i = 0; i <= (1 << (8 * sizeof(media::VideoColorSpace::TransferID)));
       i++) {
    media::VideoColorSpace color_space = media::VideoColorSpace::REC709();
    color_space.transfer = media::VideoColorSpace::GetTransferID(i);
    bool found = kSupportedTransfers.find(color_space.transfer) !=
                 kSupportedTransfers.end();
    if (found)
      num_found++;
    EXPECT_EQ(found, IsSupportedVideoConfig({media::kCodecVP9,
                                             media::VP9PROFILE_PROFILE0, 1,
                                             color_space}));
  }
  EXPECT_EQ(kSupportedTransfers.size(), num_found);
}

TEST(DecodeCapabilitiesTest, IsSupportedVideoConfig_VP9Primaries) {
  size_t num_found = 0;
  // TODO(hubbe): Verify support for HDR codecs when color management enabled.
  const std::set<media::VideoColorSpace::PrimaryID> kSupportedPrimaries = {
      media::VideoColorSpace::PrimaryID::BT709,
      media::VideoColorSpace::PrimaryID::UNSPECIFIED,
      media::VideoColorSpace::PrimaryID::BT470M,
      media::VideoColorSpace::PrimaryID::BT470BG,
      media::VideoColorSpace::PrimaryID::SMPTE170M,
  };

  for (int i = 0; i <= (1 << (8 * sizeof(media::VideoColorSpace::PrimaryID)));
       i++) {
    media::VideoColorSpace color_space = media::VideoColorSpace::REC709();
    color_space.primaries = media::VideoColorSpace::GetPrimaryID(i);
    bool found = kSupportedPrimaries.find(color_space.primaries) !=
                 kSupportedPrimaries.end();
    if (found)
      num_found++;
    EXPECT_EQ(found, IsSupportedVideoConfig({media::kCodecVP9,
                                             media::VP9PROFILE_PROFILE0, 1,
                                             color_space}));
  }
  EXPECT_EQ(kSupportedPrimaries.size(), num_found);
}

TEST(DecodeCapabilitiesTest, IsSupportedVideoConfig_VP9Matrix) {
  size_t num_found = 0;
  // TODO(hubbe): Verify support for HDR codecs when color management enabled.
  const std::set<media::VideoColorSpace::MatrixID> kSupportedMatrix = {
      media::VideoColorSpace::MatrixID::BT709,
      media::VideoColorSpace::MatrixID::UNSPECIFIED,
      media::VideoColorSpace::MatrixID::BT470BG,
      media::VideoColorSpace::MatrixID::SMPTE170M,
      media::VideoColorSpace::MatrixID::BT2020_NCL,
  };

  for (int i = 0; i <= (1 << (8 * sizeof(media::VideoColorSpace::MatrixID)));
       i++) {
    media::VideoColorSpace color_space = media::VideoColorSpace::REC709();
    color_space.matrix = media::VideoColorSpace::GetMatrixID(i);
    bool found =
        kSupportedMatrix.find(color_space.matrix) != kSupportedMatrix.end();
    if (found)
      num_found++;
    EXPECT_EQ(found, IsSupportedVideoConfig({media::kCodecVP9,
                                             media::VP9PROFILE_PROFILE0, 1,
                                             color_space}));
  }
  EXPECT_EQ(kSupportedMatrix.size(), num_found);
}

}  // namespace media