Wrote gmock-based mock filters and a mock filter factory.

Next up is actually refactoring tests to use these and not the old_mocks version.  The biggest user is the PipelineImpl tests, which I'm currently refactoring anyway hence sending this out for review.

BUG=16008
TEST=FFmpegVideoDecoderTest should still pass

Review URL: http://codereview.chromium.org/149356

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20201 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 188 insertions, 9 deletions

diff --git a/media/base/filters.h b/media/base/filters.h
index 43f24fd..bc94d39 100644
--- a/media/base/filters.h
+++ b/media/base/filters.h
@@ -245,7 +245,7 @@ class AudioDecoder : public MediaFilter {
   // Schedules a read.  Decoder takes ownership of the callback.
   //
   // TODO(scherkus): switch Read() callback to scoped_refptr<>.
-  virtual void Read(Callback1<Buffer*>::Type* read_callbasck) = 0;
+  virtual void Read(Callback1<Buffer*>::Type* read_callback) = 0;
 };
 
 
diff --git a/media/base/mock_filters.h b/media/base/mock_filters.h
index 2a2b13c..c45f8e6 100644
--- a/media/base/mock_filters.h
+++ b/media/base/mock_filters.h
@@ -43,6 +43,181 @@ class MockDataSource : public DataSource {
   DISALLOW_COPY_AND_ASSIGN(MockDataSource);
 };
 
+class MockDemuxer : public Demuxer {
+ public:
+  MockDemuxer() {}
+
+  // MediaFilter implementation.
+  MOCK_METHOD0(Stop, void());
+  MOCK_METHOD1(SetPlaybackRate, void(float playback_rate));
+  MOCK_METHOD1(Seek, void(base::TimeDelta time));
+
+  // Demuxer implementation.
+  MOCK_METHOD1(Initialize, bool(DataSource* data_source));
+  MOCK_METHOD0(GetNumberOfStreams, size_t());
+  MOCK_METHOD1(GetStream, scoped_refptr<DemuxerStream>(int stream_id));
+
+ protected:
+  virtual ~MockDemuxer() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockDemuxer);
+};
+
+class MockDemuxerStream : public DemuxerStream {
+ public:
+  MockDemuxerStream() {}
+
+  // DemuxerStream implementation.
+  MOCK_METHOD0(media_format, const MediaFormat&());
+  MOCK_METHOD1(Read, void(Callback1<Buffer*>::Type* read_callback));
+  MOCK_METHOD1(QueryInterface, void*(const char* interface_id));
+
+ protected:
+  virtual ~MockDemuxerStream() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockDemuxerStream);
+};
+
+class MockVideoDecoder : public VideoDecoder {
+ public:
+  MockVideoDecoder() {}
+
+  // MediaFilter implementation.
+  MOCK_METHOD0(Stop, void());
+  MOCK_METHOD1(SetPlaybackRate, void(float playback_rate));
+  MOCK_METHOD1(Seek, void(base::TimeDelta time));
+
+  // VideoDecoder implementation.
+  MOCK_METHOD1(Initialize, bool(DemuxerStream* demuxer_stream));
+  MOCK_METHOD0(media_format, const MediaFormat&());
+  MOCK_METHOD1(Read, void(Callback1<VideoFrame*>::Type* read_callback));
+
+ protected:
+  virtual ~MockVideoDecoder() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockVideoDecoder);
+};
+
+class MockAudioDecoder : public AudioDecoder {
+ public:
+  MockAudioDecoder() {}
+
+  // MediaFilter implementation.
+  MOCK_METHOD0(Stop, void());
+  MOCK_METHOD1(SetPlaybackRate, void(float playback_rate));
+  MOCK_METHOD1(Seek, void(base::TimeDelta time));
+
+  // AudioDecoder implementation.
+  MOCK_METHOD1(Initialize, bool(DemuxerStream* demuxer_stream));
+  MOCK_METHOD0(media_format, const MediaFormat&());
+  MOCK_METHOD1(Read, void(Callback1<Buffer*>::Type* read_callback));
+
+ protected:
+  virtual ~MockAudioDecoder() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockAudioDecoder);
+};
+
+class MockVideoRenderer : public VideoRenderer {
+ public:
+  MockVideoRenderer() {}
+
+  // MediaFilter implementation.
+  MOCK_METHOD0(Stop, void());
+  MOCK_METHOD1(SetPlaybackRate, void(float playback_rate));
+  MOCK_METHOD1(Seek, void(base::TimeDelta time));
+
+  // VideoRenderer implementation.
+  MOCK_METHOD1(Initialize, bool(VideoDecoder* decoder));
+
+ protected:
+  virtual ~MockVideoRenderer() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockVideoRenderer);
+};
+
+class MockAudioRenderer : public AudioRenderer {
+ public:
+  MockAudioRenderer() {}
+
+  // MediaFilter implementation.
+  MOCK_METHOD0(Stop, void());
+  MOCK_METHOD1(SetPlaybackRate, void(float playback_rate));
+  MOCK_METHOD1(Seek, void(base::TimeDelta time));
+
+  // AudioRenderer implementation.
+  MOCK_METHOD1(Initialize, bool(AudioDecoder* decoder));
+  MOCK_METHOD1(SetVolume, void(float volume));
+
+ protected:
+  virtual ~MockAudioRenderer() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockAudioRenderer);
+};
+
+// FilterFactory that returns canned instances of mock filters.  You can set
+// expectations on the filters and then pass the factory into a pipeline.
+//
+// TODO(scherkus): add the other filter types.
+class MockFilterFactory : public FilterFactory {
+ public:
+  MockFilterFactory()
+      : data_source_(new MockDataSource()),
+        demuxer_(new MockDemuxer()),
+        video_decoder_(new MockVideoDecoder()),
+        audio_decoder_(new MockAudioDecoder()),
+        video_renderer_(new MockVideoRenderer()),
+        audio_renderer_(new MockAudioRenderer()) {
+  }
+
+  virtual ~MockFilterFactory() {}
+
+  // Mock accessors.
+  MockDataSource* data_source() const { return data_source_; }
+  MockDemuxer* demuxer() const { return demuxer_; }
+  MockVideoDecoder* video_decoder() const { return video_decoder_; }
+  MockAudioDecoder* audio_decoder() const { return audio_decoder_; }
+  MockVideoRenderer* video_renderer() const { return video_renderer_; }
+  MockAudioRenderer* audio_renderer() const { return audio_renderer_; }
+
+ protected:
+  MediaFilter* Create(FilterType filter_type, const MediaFormat& media_format) {
+    switch (filter_type) {
+      case FILTER_DATA_SOURCE:
+        return data_source_;
+      case FILTER_DEMUXER:
+        return demuxer_;
+      case FILTER_VIDEO_DECODER:
+        return video_decoder_;
+      case FILTER_AUDIO_DECODER:
+        return audio_decoder_;
+      case FILTER_VIDEO_RENDERER:
+        return video_renderer_;
+      case FILTER_AUDIO_RENDERER:
+        return audio_renderer_;
+      default:
+        NOTREACHED() << "Unknown filter type: " << filter_type;
+    }
+    return NULL;
+  }
+
+ private:
+  scoped_refptr<MockDataSource> data_source_;
+  scoped_refptr<MockDemuxer> demuxer_;
+  scoped_refptr<MockVideoDecoder> video_decoder_;
+  scoped_refptr<MockAudioDecoder> audio_decoder_;
+  scoped_refptr<MockVideoRenderer> video_renderer_;
+  scoped_refptr<MockAudioRenderer> audio_renderer_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockFilterFactory);
+};
+
 }  // namespace media
 
 #endif  // MEDIA_BASE_MOCK_FILTERS_H_
diff --git a/media/filters/ffmpeg_video_decoder_unittest.cc b/media/filters/ffmpeg_video_decoder_unittest.cc
index 40b122d..1c2b39a 100644
--- a/media/filters/ffmpeg_video_decoder_unittest.cc
+++ b/media/filters/ffmpeg_video_decoder_unittest.cc
@@ -9,6 +9,7 @@
 #include "media/base/filters.h"
 #include "media/base/mock_ffmpeg.h"
 #include "media/base/mock_filter_host.h"
+#include "media/base/mock_filters.h"
 #include "media/filters/ffmpeg_common.h"
 #include "media/filters/ffmpeg_interfaces.h"
 #include "media/filters/ffmpeg_video_decoder.h"
@@ -23,15 +24,18 @@ using ::testing::StrictMock;
 
 namespace media {
 
-class MockDemuxerStream : public DemuxerStream, public AVStreamProvider {
+class MockFFmpegDemuxerStream : public MockDemuxerStream,
+                                public AVStreamProvider {
  public:
-  // DemuxerStream interface.
-  MOCK_METHOD0(media_format, const MediaFormat&());
-  MOCK_METHOD1(Read, void(Callback1<Buffer*>::Type* read_callback));
-  MOCK_METHOD1(QueryInterface, void*(const char* interface_id));
+  MockFFmpegDemuxerStream() {}
 
-  // AVStreamProvider interface.
+  // AVStreamProvider implementation.
   MOCK_METHOD0(GetAVStream, AVStream*());
+
+ private:
+  virtual ~MockFFmpegDemuxerStream() {}
+
+  DISALLOW_COPY_AND_ASSIGN(MockFFmpegDemuxerStream);
 };
 
 // Class that just mocks the private functions.
@@ -83,7 +87,7 @@ class FFmpegVideoDecoderTest : public testing::Test {
     pipeline_.reset(new MockPipeline());
     filter_host_.reset(new MockFilterHost<VideoDecoder>(pipeline_.get(),
                                                         decoder_));
-    demuxer_ = new MockDemuxerStream();
+    demuxer_ = new MockFFmpegDemuxerStream();
 
     // Initialize FFmpeg fixtures.
     memset(&stream_, 0, sizeof(stream_));
@@ -118,7 +122,7 @@ class FFmpegVideoDecoderTest : public testing::Test {
   scoped_refptr<FFmpegVideoDecoder> decoder_;
   scoped_ptr<MockPipeline> pipeline_;
   scoped_ptr<MockFilterHost<VideoDecoder> > filter_host_;
-  scoped_refptr<MockDemuxerStream> demuxer_;
+  scoped_refptr<MockFFmpegDemuxerStream> demuxer_;
   scoped_refptr<DataBuffer> buffer_;
   scoped_refptr<DataBuffer> end_of_stream_buffer_;
   MessageLoop message_loop_;