VP8 decoder for chromoting

Added DecoderVp8 and unit test for chromoting.

TEST=remoting_unittests
BUG=50235

Review URL: http://codereview.chromium.org/3032047

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@60960 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 56 insertions, 0 deletions

diff --git a/remoting/base/decoder_vp8.h b/remoting/base/decoder_vp8.h
new file mode 100644
index 0000000..5fe0169
--- /dev/null
+++ b/remoting/base/decoder_vp8.h
@@ -0,0 +1,56 @@
+// Copyright (c) 2010 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.
+
+#ifndef REMOTING_BASE_DECODER_VP8_H_
+#define REMOTING_BASE_DECODER_VP8_H_
+
+#include "remoting/base/decoder.h"
+
+typedef struct vpx_codec_ctx vpx_codec_ctx_t;
+
+namespace remoting {
+
+class DecoderVp8 : public Decoder {
+ public:
+  DecoderVp8();
+  ~DecoderVp8();
+
+  // Decoder implementations.
+  virtual bool BeginDecode(scoped_refptr<media::VideoFrame> frame,
+                           UpdatedRects* update_rects,
+                           Task* partial_decode_done,
+                           Task* decode_done);
+  virtual bool PartialDecode(ChromotingHostMessage* message);
+  virtual void EndDecode();
+
+ private:
+  bool HandleBeginRect(ChromotingHostMessage* message);
+  bool HandleRectData(ChromotingHostMessage* message);
+  bool HandleEndRect(ChromotingHostMessage* message);
+
+  // The internal state of the decoder.
+  State state_;
+
+  // Keeps track of the updating rect.
+  int rect_x_;
+  int rect_y_;
+  int rect_width_;
+  int rect_height_;
+
+  // Tasks to call when decode is done.
+  scoped_ptr<Task> partial_decode_done_;
+  scoped_ptr<Task> decode_done_;
+
+  // The video frame to write to.
+  scoped_refptr<media::VideoFrame> frame_;
+  UpdatedRects* updated_rects_;
+
+  vpx_codec_ctx_t* codec_;
+
+  DISALLOW_COPY_AND_ASSIGN(DecoderVp8);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_BASE_DECODER_VP8_H_