Add CDM video decoder.

webkit/media/crypto/decoders/video_decoder.h

+// Copyright (c) 2012 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 WEBKIT_MEDIA_CRYPTO_DECODERS_VIDEO_DECODER_H_
+#define WEBKIT_MEDIA_CRYPTO_DECODERS_VIDEO_DECODER_H_
+
+#include "webkit/media/crypto/ppapi/content_decryption_module.h"
+
+namespace webkit_media {
+
+VideoFrame::Format PixelFormatToVideoFormat(PixelFormat pixel_format) {
+  switch (pixel_format) {
+    case PIX_FMT_YUV422P:
+      return VideoFrame::YV16;
+    case PIX_FMT_YUV420P:
+      return VideoFrame::YV12;
+    default:
+      DVLOG(1) << "Unsupported PixelFormat: " << pixel_format;
+  }
+  return VideoFrame::INVALID;
+}

[Tom Finegan, 2012/08/29 01:37:46]

This should not be here-- copy/paste error that I caught while giving the CL a
quick look.

It will live in ffmpeg_util unless I should rework things to use
media::VideoFrame.

[Tom Finegan, 2012/08/30 17:09:23]

Done.

+
+class VideoDecoder {
+ public:
+  virtual bool Initialize(const cdm::VideoDecoderConfig& config) = 0;
+  virtual bool DecodeFrame(const cdm::VideoFrame& compressed_frame,
+                           cdm::VideoFrame* decompressed_frame) = 0;
+
+ protected:
+  VideoDecoder();
+  virtual ~VideoDecoder();
+  VideoDecoder(const VideoDecoder&);

[ddorwin, 2012/08/29 17:33:49]

private:
 DISALLOW_IMPLICIT_CONSTRUCTORS( VideoDecoder); or
DISALLOW_COPY_AND_ASSIGN(VideoDecoder);

requires base/basictypes.h

[Tom Finegan, 2012/08/30 17:09:23]

Done.

+  void operator=(const VideoDecoder&);
+};
+
+}  // namespace webkit_media
+
+#endif  // WEBKIT_MEDIA_CRYPTO_DECODERS_VIDEO_DECODER_H_