Relocate last remnants of webkit/renderer/media code.

webkit/renderer/media/crypto/ppapi/ffmpeg_cdm_audio_decoder.h

-// Copyright 2013 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_RENDERER_MEDIA_CRYPTO_PPAPI_FFMPEG_CDM_AUDIO_DECODER_H_
-#define WEBKIT_RENDERER_MEDIA_CRYPTO_PPAPI_FFMPEG_CDM_AUDIO_DECODER_H_
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-#include "webkit/renderer/media/crypto/ppapi/cdm/content_decryption_module.h"
-
-struct AVCodecContext;
-struct AVFrame;
-
-namespace media {
-class AudioBus;
-class AudioTimestampHelper;
-}
-
-namespace webkit_media {
-
-// TODO(xhwang): This class is partially cloned from media::FFmpegAudioDecoder.
-// When media::FFmpegAudioDecoder is updated, it's a pain to keep this class
-// in sync with media::FFmpegAudioDecoder. We need a long term sustainable
-// solution for this. See http://crbug.com/169203
-class FFmpegCdmAudioDecoder {
- public:
-  explicit FFmpegCdmAudioDecoder(cdm::Host* host);
-  ~FFmpegCdmAudioDecoder();
-  bool Initialize(const cdm::AudioDecoderConfig& config);
-  void Deinitialize();
-  void Reset();
-
-  // Returns true when |config| is a valid audio decoder configuration.
-  static bool IsValidConfig(const cdm::AudioDecoderConfig& config);
-
-  // Decodes |compressed_buffer|. Returns |cdm::kSuccess| after storing
-  // output in |decoded_frames| when output is available. Returns
-  // |cdm::kNeedMoreData| when |compressed_frame| does not produce output.
-  // Returns |cdm::kDecodeError| when decoding fails.
-  //
-  // A null |compressed_buffer| will attempt to flush the decoder of any
-  // remaining frames. |compressed_buffer_size| and |timestamp| are ignored.
-  cdm::Status DecodeBuffer(const uint8_t* compressed_buffer,
-                           int32_t compressed_buffer_size,
-                           int64_t timestamp,
-                           cdm::AudioFrames* decoded_frames);
-
- private:
-  void ResetTimestampState();
-  void ReleaseFFmpegResources();
-
-  base::TimeDelta GetNextOutputTimestamp() const;
-
-  void SerializeInt64(int64_t value);
-
-  bool is_initialized_;
-
-  cdm::Host* const host_;
-
-  // FFmpeg structures owned by this object.
-  AVCodecContext* codec_context_;
-  AVFrame* av_frame_;
-
-  // Audio format.
-  int bits_per_channel_;
-  int samples_per_second_;
-  int channels_;
-
-  // AVSampleFormat initially requested; not Chrome's SampleFormat.
-  int av_sample_format_;
-
-  // Used for computing output timestamps.
-  scoped_ptr<media::AudioTimestampHelper> output_timestamp_helper_;
-  int bytes_per_frame_;
-  base::TimeDelta last_input_timestamp_;
-
-  // We may need to convert the audio data coming out of FFmpeg from planar
-  // float to integer.
-  scoped_ptr<media::AudioBus> converter_bus_;
-
-  // Number of output sample bytes to drop before generating output buffers.
-  // This is required for handling negative timestamps when decoding Vorbis
-  // audio, for example.
-  int output_bytes_to_drop_;
-
-  typedef std::vector<uint8_t> SerializedAudioFrames;
-  SerializedAudioFrames serialized_audio_frames_;
-
-  DISALLOW_COPY_AND_ASSIGN(FFmpegCdmAudioDecoder);
-};
-
-}  // namespace webkit_media
-
-#endif  // WEBKIT_RENDERER_MEDIA_CRYPTO_PPAPI_FFMPEG_CDM_AUDIO_DECODER_H_