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cd4ab49ee7
delta_q is encoded as signed integer (s(4)) that uses extra bit for the sign. See VP9 Bitstream Specification section 6.2.10 Delta quantizer syntax Bug: None Change-Id: Ib458c2a2ded3c4d6c153b6bedd29c48ef12cc538 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/231125 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/main@{#34908}
94 lines
4 KiB
C++
94 lines
4 KiB
C++
/*
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* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/video_coding/utility/vp9_uncompressed_header_parser.h"
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#include "test/gmock.h"
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#include "test/gtest.h"
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namespace webrtc {
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namespace vp9 {
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using ::testing::AllOf;
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using ::testing::ElementsAre;
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using ::testing::Eq;
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using ::testing::Field;
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using ::testing::Optional;
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TEST(Vp9UncompressedHeaderParserTest, FrameWithSegmentation) {
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// Uncompressed header from a frame generated with libvpx.
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// Encoded QVGA frame (SL0 of a VGA frame) that includes a segmentation.
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const uint8_t kHeader[] = {
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0x87, 0x01, 0x00, 0x00, 0x02, 0x7e, 0x01, 0xdf, 0x02, 0x7f, 0x01, 0xdf,
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0xc6, 0x87, 0x04, 0x83, 0x83, 0x2e, 0x46, 0x60, 0x20, 0x38, 0x0c, 0x06,
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0x03, 0xcd, 0x80, 0xc0, 0x60, 0x9f, 0xc5, 0x46, 0x00, 0x00, 0x00, 0x00,
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0x2e, 0x73, 0xb7, 0xee, 0x22, 0x06, 0x81, 0x82, 0xd4, 0xef, 0xc3, 0x58,
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0x1f, 0x12, 0xd2, 0x7b, 0x28, 0x1f, 0x80, 0xfc, 0x07, 0xe0, 0x00, 0x00};
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absl::optional<Vp9UncompressedHeader> frame_info =
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ParseUncompressedVp9Header(kHeader);
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ASSERT_TRUE(frame_info.has_value());
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EXPECT_FALSE(frame_info->is_keyframe);
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EXPECT_TRUE(frame_info->error_resilient);
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EXPECT_TRUE(frame_info->show_frame);
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EXPECT_FALSE(frame_info->show_existing_frame);
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EXPECT_EQ(frame_info->base_qp, 185);
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EXPECT_EQ(frame_info->frame_width, 320);
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EXPECT_EQ(frame_info->frame_height, 240);
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EXPECT_EQ(frame_info->render_width, 640);
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EXPECT_EQ(frame_info->render_height, 480);
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EXPECT_TRUE(frame_info->allow_high_precision_mv);
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EXPECT_EQ(frame_info->frame_context_idx, 0u);
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EXPECT_EQ(frame_info->interpolation_filter,
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Vp9InterpolationFilter::kSwitchable);
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EXPECT_EQ(frame_info->is_lossless, false);
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EXPECT_EQ(frame_info->profile, 0);
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EXPECT_THAT(frame_info->reference_buffers, ElementsAre(0, 0, 0));
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EXPECT_THAT(frame_info->reference_buffers_sign_bias, 0b0000);
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EXPECT_EQ(frame_info->updated_buffers, 0b10000000);
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EXPECT_EQ(frame_info->tile_cols_log2, 0u);
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EXPECT_EQ(frame_info->tile_rows_log2, 0u);
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EXPECT_EQ(frame_info->render_size_offset_bits, 64u);
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EXPECT_EQ(frame_info->compressed_header_size, 23u);
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EXPECT_EQ(frame_info->uncompressed_header_size, 37u);
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EXPECT_TRUE(frame_info->segmentation_enabled);
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EXPECT_FALSE(frame_info->segmentation_is_delta);
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EXPECT_THAT(frame_info->segmentation_pred_prob,
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Optional(ElementsAre(205, 1, 1)));
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EXPECT_THAT(frame_info->segmentation_tree_probs,
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Optional(ElementsAre(255, 255, 128, 1, 128, 128, 128)));
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EXPECT_THAT(frame_info->segmentation_features[1][kVp9SegLvlAlt_Q], Eq(-63));
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EXPECT_THAT(frame_info->segmentation_features[2][kVp9SegLvlAlt_Q], Eq(-81));
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}
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TEST(Vp9UncompressedHeaderParserTest, SegmentationWithDefaultPredProbs) {
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const uint8_t kHeader[] = {0x90, 0x49, 0x83, 0x42, 0x80, 0x2e,
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0x30, 0x0, 0xb0, 0x0, 0x37, 0xff,
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0x06, 0x80, 0x0, 0x0, 0x0, 0x0};
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absl::optional<Vp9UncompressedHeader> frame_info =
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ParseUncompressedVp9Header(kHeader);
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ASSERT_TRUE(frame_info.has_value());
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EXPECT_THAT(frame_info->segmentation_pred_prob,
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Optional(ElementsAre(255, 255, 255)));
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}
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TEST(Vp9UncompressedHeaderParserTest, SegmentationWithSkipLevel) {
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const uint8_t kHeader[] = {0x90, 0x49, 0x83, 0x42, 0x80, 0x2e, 0x30, 0x00,
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0xb0, 0x00, 0x37, 0xff, 0x06, 0x80, 0x01, 0x08,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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absl::optional<Vp9UncompressedHeader> frame_info =
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ParseUncompressedVp9Header(kHeader);
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ASSERT_TRUE(frame_info.has_value());
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EXPECT_THAT(frame_info->segmentation_features[0][kVp9SegLvlSkip], Eq(1));
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}
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} // namespace vp9
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} // namespace webrtc
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