Add a libvpx video decoder to ClearKeyCdm and move the fake video decoder to its own class.

webkit/media/crypto/ppapi/cdm_video_decoder.cc

+// 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.
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "webkit/media/crypto/ppapi/cdm_video_decoder.h"
+#include "webkit/media/crypto/ppapi/content_decryption_module.h"
+
+#if defined(CLEAR_KEY_CDM_USE_FAKE_VIDEO_DECODER)
+#include "webkit/media/crypto/ppapi/fake_cdm_video_decoder.h"
+#endif
+
+#if defined(CLEAR_KEY_CDM_USE_FFMPEG_DECODER)
+#include "webkit/media/crypto/ppapi/ffmpeg_cdm_video_decoder.h"
+#endif
+
+#if defined(CLEAR_KEY_CDM_USE_LIBVPX_DECODER)
+#include "webkit/media/crypto/ppapi/libvpx_cdm_video_decoder.h"
+#endif
+
+namespace webkit_media {
+
+scoped_ptr<CdmVideoDecoder> CreateVideoDecoder(
+    cdm::Allocator* allocator,
+    const cdm::VideoDecoderConfig& config) {
+  scoped_ptr<CdmVideoDecoder> video_decoder;
+#if defined(CLEAR_KEY_CDM_USE_FAKE_VIDEO_DECODER)
+  video_decoder.reset(new FakeCdmVideoDecoder(allocator));
+
+  if (!video_decoder->Initialize(config))
+    video_decoder.reset();
+#else
+
+#if defined(CLEAR_KEY_CDM_USE_LIBVPX_DECODER)
+  if (config.codec == cdm::VideoDecoderConfig::kCodecVp8) {
+    video_decoder.reset(new LibvpxCdmVideoDecoder(allocator));
+
+    if (!video_decoder->Initialize(config))
+      video_decoder.reset();
+
+    return video_decoder.Pass();
+  }
+#endif
+
+#if defined(CLEAR_KEY_CDM_USE_FFMPEG_DECODER)
+  video_decoder.reset(new FFmpegCdmVideoDecoder(allocator));
+
+  if (!video_decoder->Initialize(config))
+    video_decoder.reset();
+#endif
+
+#endif  // CLEAR_KEY_CDM_USE_FAKE_VIDEO_DECODER
+
+  return video_decoder.Pass();
+}
+
+}  // namespace webkit_media