Add a Vp9Parser implementation

media/filters/vp9_parser_unittest.cc

+// Copyright 2015 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 "base/files/memory_mapped_file.h"
+#include "base/logging.h"
+#include "media/base/test_data_util.h"
+#include "media/filters/ivf_parser.h"
+#include "media/filters/vp9_parser.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+class Vp9ParserTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+    base::FilePath file_path = GetTestDataFilePath("test-25fps.vp9");
+
+    stream_.reset(new base::MemoryMappedFile);
+    ASSERT_TRUE(stream_->Initialize(file_path)) << "Couldn't open stream file: "
+                                                << file_path.MaybeAsASCII();
+
+    IvfFileHeader ivf_file_header;
+    ASSERT_TRUE(ivf_parser_.Initialize(stream_->data(), stream_->length(),
+                                       &ivf_file_header));
+    ASSERT_EQ(ivf_file_header.fourcc, 0x30395056u);  // VP90
+  }
+
+  void TearDown() override { stream_.reset(); }
+
+  IvfParser ivf_parser_;
+  scoped_ptr<base::MemoryMappedFile> stream_;
+};
+
+TEST_F(Vp9ParserTest, StreamFileParsing) {
+  // Number of frames in the test stream to be parsed.
+  const int num_frames = 250;
+
+  Vp9Parser vp9_parser;
+  IvfFrameHeader ivf_frame_header;
+  int num_parsed_frames = 0;
+
+  // Parse until the end of stream/unsupported stream/error in stream is found.
+  while (ivf_parser_.ParseNextFrame(&ivf_frame_header)) {
+    Vp9FrameHeader fhdr;
+
+    ASSERT_TRUE(vp9_parser.ParseFrame(ivf_frame_header.data,
+                                      ivf_frame_header.data_size, &fhdr));
+
+    ++num_parsed_frames;
+  }
+
+  DVLOG(1) << "Number of successfully parsed frames before EOS: "
+           << num_parsed_frames;
+
+  EXPECT_EQ(num_frames, num_parsed_frames);
+}
+
+TEST_F(Vp9ParserTest, VerifyFirstFrame) {
+  Vp9Parser vp9_parser;
+  IvfFrameHeader ivf_frame_header;
+
+  ASSERT_TRUE(ivf_parser_.ParseNextFrame(&ivf_frame_header));
+  Vp9FrameHeader fhdr;
+
+  ASSERT_TRUE(vp9_parser.ParseFrame(ivf_frame_header.data,
+                                    ivf_frame_header.data_size, &fhdr));
+
+  EXPECT_EQ(0, fhdr.profile);
+  EXPECT_FALSE(fhdr.show_existing_frame);
+  EXPECT_EQ(Vp9FrameHeader::KEYFRAME, fhdr.frame_type);
+  EXPECT_TRUE(fhdr.show_frame);
+  EXPECT_FALSE(fhdr.error_resilient_mode);
+
+  EXPECT_EQ(8, fhdr.bit_depth);
+  EXPECT_EQ(Vp9ColorSpace::UNKNOWN, fhdr.color_space);
+  EXPECT_FALSE(fhdr.yuv_range);
+  EXPECT_EQ(1, fhdr.subsampling_x);
+  EXPECT_EQ(1, fhdr.subsampling_y);
+
+  EXPECT_EQ(320u, fhdr.width);
+  EXPECT_EQ(240u, fhdr.height);
+  EXPECT_EQ(320u, fhdr.display_width);
+  EXPECT_EQ(240u, fhdr.display_height);
+
+  EXPECT_TRUE(fhdr.refresh_frame_context);
+  EXPECT_TRUE(fhdr.frame_parallel_decoding_mode);
+  EXPECT_EQ(0, fhdr.frame_context_idx);
+
+  EXPECT_EQ(9, fhdr.loop_filter.filter_level);
+  EXPECT_EQ(0, fhdr.loop_filter.sharpness_level);
+
+  const Vp9LoopFilter& lf = fhdr.loop_filter;
+  EXPECT_TRUE(lf.mode_ref_delta_enabled);
+  EXPECT_TRUE(lf.mode_ref_delta_update);
+  EXPECT_TRUE(lf.update_ref_deltas[0]);
+  EXPECT_EQ(1, lf.ref_deltas[0]);
+  EXPECT_EQ(-1, lf.ref_deltas[2]);
+  EXPECT_EQ(-1, lf.ref_deltas[3]);
+
+  const Vp9QuantizationParams& qp = fhdr.quant_params;
+  EXPECT_EQ(65, qp.base_qindex);
+  EXPECT_FALSE(qp.y_dc_delta);
+  EXPECT_FALSE(qp.uv_dc_delta);
+  EXPECT_FALSE(qp.uv_ac_delta);
+  EXPECT_FALSE(qp.IsLossless());
+
+  const Vp9Segmentation& seg = fhdr.segment;
+  EXPECT_FALSE(seg.enabled);
+
+  EXPECT_EQ(0, fhdr.log2_tile_cols);
+  EXPECT_EQ(0, fhdr.log2_tile_rows);
+
+  EXPECT_EQ(120, fhdr.first_partition_size);
+}
+
+TEST_F(Vp9ParserTest, VerifyInterFrame) {
+  Vp9Parser vp9_parser;
+  Vp9FrameHeader fhdr;
+
+  // To verify the second frame.
+  for (int i = 0; i < 2; i++) {
+    IvfFrameHeader ivf_frame_header;
+    ASSERT_TRUE(ivf_parser_.ParseNextFrame(&ivf_frame_header));
+    ASSERT_TRUE(vp9_parser.ParseFrame(ivf_frame_header.data,
+                                      ivf_frame_header.data_size, &fhdr));
+  }
+
+  EXPECT_EQ(Vp9FrameHeader::INTERFRAME, fhdr.frame_type);
+  EXPECT_FALSE(fhdr.show_frame);
+  EXPECT_FALSE(fhdr.intra_only);
+  EXPECT_FALSE(fhdr.reset_context);
+  EXPECT_TRUE(fhdr.refresh_flag[5]);
+  EXPECT_EQ(0, fhdr.frame_refs[0]);
+  EXPECT_EQ(1, fhdr.frame_refs[1]);
+  EXPECT_EQ(2, fhdr.frame_refs[2]);
+  EXPECT_TRUE(fhdr.allow_high_precision_mv);
+  EXPECT_EQ(Vp9InterpFilter::EIGHTTAP, fhdr.interp_filter);
+
+  EXPECT_EQ(48, fhdr.first_partition_size);
+}
+
+}  // namespace media