Add JPEG decoder for VAAPI JPEG decode acceleration

content/common/gpu/media/vaapi_jpeg_decoder_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 <string>
+
+// This has to be included first.
+// See http://code.google.com/p/googletest/issues/detail?id=371
+#include "testing/gtest/include/gtest/gtest.h"
+
+#include "base/at_exit.h"
+#include "base/bind.h"
+#include "base/files/file_util.h"
+#include "base/logging.h"
+#include "base/md5.h"
+#include "base/path_service.h"
+#include "base/strings/string_piece.h"
+#include "content/common/gpu/media/vaapi_jpeg_decoder.h"
+#include "media/filters/jpeg_parser.h"
+
+namespace content {
+namespace {
+
+const char* kTestFilename = "pixel-1280x720.jpg";
+const char* kExpectedMd5Sum = "451f28cc874a2206fc5c5a9213b212bd";
+
+base::FilePath GetDataDir() {
+  base::FilePath data_dir;
+  PathService::Get(base::DIR_SOURCE_ROOT, &data_dir);
+  return data_dir.AppendASCII("media").AppendASCII("test").AppendASCII("data");
+}
+
+void LogOnError() {
+  LOG(FATAL) << "Oh noes! Decoder failed";
+}
+
+class VaapiJpegDecoderTest : public ::testing::Test {
+ protected:
+  VaapiJpegDecoderTest() {}
+
+  void SetUp() override {
+    base::Closure report_error_cb = base::Bind(&LogOnError);
+    wrapper_ = VaapiWrapper::Create(VaapiWrapper::kDecode,
+                                    VAProfileJPEGBaseline, report_error_cb);
+    ASSERT_TRUE(wrapper_);

[wuchengli, 2015/01/20 07:55:53]

This should be CHECK. ASSERT_TRUE doesn't fail the test. The test will fail
later when |wrapper_| is dereferenced.

[kcwu, 2015/01/21 12:23:48]

No. CHECK will crash. ASSERT_* will fail the test and EXPECT_* don't fail the
test. 

+    decoder_.reset(new VaapiJpegDecoder(wrapper_.get()));
+  }
+
+  void TearDown() override {
+    decoder_.reset();
+    wrapper_.reset();
+  }
+
+  bool VerifyDecode(const media::JpegParseResult& parse_result,
+                    const std::string& md5sum);
+
+ private:
+  scoped_ptr<VaapiWrapper> wrapper_;
+  scoped_ptr<VaapiJpegDecoder> decoder_;
+};
+
+bool VaapiJpegDecoderTest::VerifyDecode(
+    const media::JpegParseResult& parse_result,
+    const std::string& expected_md5sum) {
+  gfx::Size size(parse_result.frame_header.visible_width,
+                 parse_result.frame_header.visible_height);
+
+  std::vector<VASurfaceID> va_surfaces;
+  if (!wrapper_->CreateSurfaces(size, 1, &va_surfaces))
+    return false;
+
+  if (!decoder_->Decode(parse_result, va_surfaces[0])) {
+    LOG(ERROR) << "Decode failed";
+    return false;
+  }
+
+  VAImage image;
+  VAImageFormat format;
+  const uint32_t kI420_fourcc = VA_FOURCC('I', '4', '2', '0');
+  memset(&image, 0, sizeof(image));
+  memset(&format, 0, sizeof(format));
+  format.fourcc = kI420_fourcc;
+  format.byte_order = VA_LSB_FIRST;
+  format.bits_per_pixel = 12;

[wuchengli, 2015/01/20 07:55:53]

We can use this.
  for (size_t i = 0; i < media::VideoFrame::NumPlanes(I420); ++i)
    bits_per_pixel += media::VideoFrame::PlaneBitsPerPixel(I420, i);

[kcwu, 2015/01/21 12:23:48]

I'm wondering should we make it complicated here. And note this is only
unittest.

+
+  void* mem;
+  if (!wrapper_->GetVaImage(va_surfaces[0], &format, size, &image, &mem)) {
+    LOG(ERROR) << "Cannot get VAImage";
+    return false;
+  }
+  EXPECT_EQ(kI420_fourcc, image.format.fourcc);
+
+  base::StringPiece result(reinterpret_cast<const char*>(mem),
+                           size.width() * size.height() * 2);

[wuchengli, 2015/01/20 07:55:53]

use media::AllocationSize.

[kcwu, 2015/01/21 12:23:48]

Done.

+  EXPECT_EQ(expected_md5sum, base::MD5String(result));
+
+  wrapper_->ReturnVaImage(&image);
+
+  return true;
+}
+
+TEST_F(VaapiJpegDecoderTest, DecodeSuccess) {
+  base::FilePath input_file = GetDataDir().AppendASCII(kTestFilename);
+
+  std::string data;
+  ASSERT_TRUE(base::ReadFileToString(input_file, &data))
+      << "failed to read input data from " << input_file.value();
+
+  media::JpegParseResult parse_result;
+  ASSERT_TRUE(
+      media::ParseJpegPicture(reinterpret_cast<const uint8_t*>(data.data()),
+                              data.size(), &parse_result));
+
+  EXPECT_TRUE(VerifyDecode(parse_result, kExpectedMd5Sum));
+}
+
+TEST_F(VaapiJpegDecoderTest, DecodeFail) {
+  base::FilePath input_file = GetDataDir().AppendASCII(kTestFilename);
+
+  std::string data;
+  ASSERT_TRUE(base::ReadFileToString(input_file, &data))
+      << "failed to read input data from " << input_file.value();

[wuchengli, 2015/01/20 07:55:53]

input_file and data creation can be done in SetUp.

[kcwu, 2015/01/21 12:23:48]

Done.

+
+  media::JpegParseResult parse_result;
+  ASSERT_TRUE(
+      media::ParseJpegPicture(reinterpret_cast<const uint8_t*>(data.data()),
+                              data.size(), &parse_result));
+
+  // Not supported by VAAPI.
+  parse_result.frame_header.num_components = 1;
+  parse_result.scan.num_components = 1;
+
+  EXPECT_FALSE(VerifyDecode(parse_result, ""));

[wuchengli, 2015/01/20 07:55:53]

This should call wrapper_->CreateSurfaces and decoder_->Decode dircetly. We want
to make sure Decode returns false, not other functions.

[kcwu, 2015/01/21 12:23:48]

Done.

+}
+
+}  // namespace
+}  // namespace content
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+  base::AtExitManager exit_manager;
+  return RUN_ALL_TESTS();
+}