Media Galleries API Metadata: Add audio video metadata extractor.

This CL adds a class for extraction of audio and video metadata using ffmpeg.

This is needed to implement the Media Galleries Metadata API for Chrome extensions.

BUG=318450

Review URL: https://codereview.chromium.org/121383002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243470 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 78 insertions, 0 deletions

diff --git a/media/base/audio_video_metadata_extractor_unittest.cc b/media/base/audio_video_metadata_extractor_unittest.cc
new file mode 100644
index 0000000..c55cd5d
--- /dev/null
+++ b/media/base/audio_video_metadata_extractor_unittest.cc
@@ -0,0 +1,78 @@
+// 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 "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "build/build_config.h"
+#include "media/base/audio_video_metadata_extractor.h"
+#include "media/base/test_data_util.h"
+#include "media/filters/file_data_source.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+scoped_ptr<AudioVideoMetadataExtractor> GetExtractor(
+    const std::string& filename,
+    bool expected_result,
+    double expected_duration,
+    int expected_width,
+    int expected_height) {
+  FileDataSource source;
+  EXPECT_TRUE(source.Initialize(GetTestDataFilePath(filename)));
+
+  scoped_ptr<AudioVideoMetadataExtractor> extractor(
+      new AudioVideoMetadataExtractor);
+  bool extracted = extractor->Extract(&source);
+  EXPECT_EQ(expected_result, extracted);
+
+  if (!extracted)
+    return extractor.Pass();
+
+  EXPECT_EQ(expected_duration, extractor->duration());
+
+  EXPECT_EQ(expected_width, extractor->width());
+  EXPECT_EQ(expected_height, extractor->height());
+
+  return extractor.Pass();
+}
+
+TEST(AudioVideoMetadataExtractorTest, InvalidFile) {
+  GetExtractor("ten_byte_file", false, 0, -1, -1);
+}
+
+TEST(AudioVideoMetadataExtractorTest, AudioOGG) {
+  scoped_ptr<AudioVideoMetadataExtractor> extractor =
+      GetExtractor("9ch.ogg", true, 0, -1, -1);
+  EXPECT_EQ("Processed by SoX", extractor->comment());
+}
+
+TEST(AudioVideoMetadataExtractorTest, AudioWAV) {
+  scoped_ptr<AudioVideoMetadataExtractor> extractor =
+      GetExtractor("sfx_u8.wav", true, 0, -1, -1);
+  EXPECT_EQ("Lavf54.37.100", extractor->encoder());
+  EXPECT_EQ("Amadeus Pro", extractor->encoded_by());
+}
+
+TEST(AudioVideoMetadataExtractorTest, VideoWebM) {
+  scoped_ptr<AudioVideoMetadataExtractor> extractor =
+      GetExtractor("bear-320x240-multitrack.webm", true, 2, 320, 240);
+  EXPECT_EQ("Lavf53.9.0", extractor->encoder());
+}
+
+#if defined(USE_PROPRIETARY_CODECS)
+TEST(AudioVideoMetadataExtractorTest, AudioMP3) {
+  scoped_ptr<AudioVideoMetadataExtractor> extractor =
+      GetExtractor("id3_png_test.mp3", true, 1, -1, -1);
+
+  EXPECT_EQ("Airbag", extractor->title());
+  EXPECT_EQ("Radiohead", extractor->artist());
+  EXPECT_EQ("OK Computer", extractor->album());
+  EXPECT_EQ(1, extractor->track());
+  EXPECT_EQ("Alternative", extractor->genre());
+  EXPECT_EQ("1997", extractor->date());
+  EXPECT_EQ("Lavf54.4.100", extractor->encoder());
+}
+#endif
+
+}  // namespace media