Add JPEG decoder for VAAPI JPEG decode acceleration

content/common/gpu/media/vaapi_jpeg_decoder_unittest.cc

+// Copyright 2014 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"
+
+namespace content {
+namespace {
+
+base::FilePath GetDataDir() {
+  base::FilePath data_dir;
+  PathService::Get(base::DIR_SOURCE_ROOT, &data_dir);
+  return data_dir.AppendASCII("media").AppendASCII("test").AppendASCII("data");

[wuchengli, 2015/01/12 09:08:52]

pixel-1280x720.bin can be removed from this CL since you are using the one in
media/test/data/

[kcwu, 2015/01/16 15:12:55]

Done.

+}
+
+void LogOnError(VaapiJpegDecoder::DecodeStatus error) {
+  LOG(FATAL) << "Oh noes! Decoder failed: " << error;
+}
+
+class VaapiJpegDecoderTest : public ::testing::Test {
+ protected:
+  VaapiJpegDecoderTest() : x_display_(nullptr) {}
+
+  void SetUp() override {
+    x_display_ = XOpenDisplay(nullptr);

[wuchengli, 2015/01/12 09:08:52]

How does this work with freon?

[kcwu, 2015/01/16 15:12:55]

Done.

+    ASSERT_TRUE(x_display_);
+
+    base::Closure report_error_cb =
+        base::Bind(&LogOnError, VaapiJpegDecoder::VAAPI_ERROR);
+    wrapper_ = VaapiWrapper::Create(VaapiWrapper::kDecode, media::MJPEGPROFILE,
+                                    x_display_, report_error_cb);
+    ASSERT_TRUE(wrapper_.get());

[Owen Lin, 2015/01/13 06:17:58]

Do we need the get()?

[kcwu, 2015/01/16 15:12:55]

Done.

+    decoder_.reset(
+        new VaapiJpegDecoder(wrapper_.get(), base::Bind(&LogOnError)));
+  }
+
+  void TearDown() override {
+    decoder_.reset();
+    wrapper_.reset();
+
+    if (x_display_) {
+      XCloseDisplay(x_display_);
+    }
+  }
+
+  VaapiJpegDecoder::DecodeStatus RunDecode(const base::StringPiece& data,
+                                           std::string& md5sum);
+
+ private:
+  scoped_ptr<VaapiWrapper> wrapper_;
+  scoped_ptr<VaapiJpegDecoder> decoder_;
+
+  // x_display need to be initialized and possibly freed manually.

[wuchengli, 2015/01/12 09:08:52]

possibly is vague. Should we free manually or not?

[kcwu, 2015/01/16 15:12:55]

Done.

+  Display* x_display_;
+};
+
+VaapiJpegDecoder::DecodeStatus VaapiJpegDecoderTest::RunDecode(
+    const base::StringPiece& data,
+    std::string& md5sum) {

[Owen Lin, 2015/01/13 06:17:58]

Why not just pass the expected md5sum and rename it to VerifyDecode ?

[kcwu, 2015/01/16 15:12:56]

Done.

+  gfx::Size size;
+  VASurfaceID surface_id;
+  VaapiJpegDecoder::DecodeStatus status =
+      decoder_->Decode(reinterpret_cast<const uint8*>(data.data()), data.size(),
+                       &size, &surface_id);
+
+  if (status != VaapiJpegDecoder::SUCCESS) {
+    LOG(ERROR) << "Decode failed";
+    return status;
+  }
+
+  VAImage image;
+  VAImageFormat format;
+  uint32_t kI420_fourcc = 'I' | '4' << 8 | '2' << 16 | '0' << 24;

[wuchengli, 2015/01/12 09:08:53]

VA_FOURCC_IYUV? I420 is IYUV.

[kcwu, 2015/01/16 15:12:55]

No. vaCreateImage failed with VA_FOURCC_IYUV

+  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;
+
+  void* mem;
+  if (!wrapper_->GetVaImageWithFormat(surface_id, &format, size, &image,
+                                      &mem)) {
+    LOG(ERROR) << "Cannot get VAImage";
+    return VaapiJpegDecoder::VAAPI_ERROR;
+  }
+  EXPECT_EQ(kI420_fourcc, image.format.fourcc);
+
+  base::StringPiece result(reinterpret_cast<const char*>(mem),
+                           size.width() * size.height() * 2);
+  md5sum = base::MD5String(result);
+
+  wrapper_->ReturnVaImageForTesting(&image);

[Owen Lin, 2015/01/13 06:17:58]

Why there is no DecodeDone() ? Is this because it would be freed with the
wrapper ?

[kcwu, 2015/01/16 15:12:55]

Yes. I added DecodeDone anyway.

+
+  return VaapiJpegDecoder::SUCCESS;
+}
+
+TEST_F(VaapiJpegDecoderTest, DecodeSuccess) {
+  base::FilePath input_file = GetDataDir().AppendASCII("pixel-1280x720.jpg");

[wuchengli, 2015/01/12 09:08:52]

Make this a constant.

[kcwu, 2015/01/16 15:12:55]

Done.

+
+  std::string data;
+  ASSERT_TRUE(base::ReadFileToString(input_file, &data))
+      << "failed to read input data from " << input_file.value();
+
+  std::string actual_md5sum;
+  EXPECT_EQ(VaapiJpegDecoder::SUCCESS, RunDecode(data, actual_md5sum));
+  EXPECT_EQ("451f28cc874a2206fc5c5a9213b212bd", actual_md5sum);

[wuchengli, 2015/01/12 09:08:53]

Make this a constant.

[kcwu, 2015/01/16 15:12:55]

Done.

+}
+
+TEST_F(VaapiJpegDecoderTest, DecodeFail) {
+  base::FilePath input_file = GetDataDir().AppendASCII("pixel-1280x720.jpg");
+
+  std::string data;
+  ASSERT_TRUE(base::ReadFileToString(input_file, &data))
+      << "failed to read input data from " << input_file.value();
+
+  // make data corrupted to simulate parse failure

[wuchengli, 2015/01/12 09:08:53]

Capitalize the first word and add period.

[kcwu, 2015/01/16 15:12:55]

Done.

+  data[0] = 0x1;
+
+  std::string actual_md5sum;
+  EXPECT_EQ(VaapiJpegDecoder::PARSE_ERROR, RunDecode(data, actual_md5sum));
+}
+
+}  // namespace
+}  // namespace content
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+  base::AtExitManager exit_manager;
+  return RUN_ALL_TESTS();
+}