Revert 148024 - [cros] Implement WebM encoder/muxer for animated avatar capture.

media/webm/chromeos/webm_encoder.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 MEDIA_WEBM_CHROMEOS_WEBM_ENCODER_H_
-#define MEDIA_WEBM_CHROMEOS_WEBM_ENCODER_H_
-
-#include <stack>
-#include <stdio.h>
-
-#include "base/file_path.h"
-#include "media/base/media_export.h"
-#include "media/webm/chromeos/ebml_writer.h"
-
-extern "C" {
-#define VPX_CODEC_DISABLE_COMPAT 1
-#include "third_party/libvpx/libvpx.h"
-}
-
-class FilePath;
-class SkBitmap;
-
-namespace media {
-
-namespace chromeos {
-
-// WebM encoder using libvpx. Currently only supports one-pass, constant bitrate
-// encoding of short files consisting of a single video track. Seek info and
-// cues are not supported, so generated .webm file does not strictly adhere to
-// WebM standard (http://www.webmproject.org/code/specs/container/).
-class MEDIA_EXPORT WebmEncoder {
- public:
-  // Create new instance for writing to |output_path|. If |realtime| is |true|,
-  // uses realtime deadline, otherwise - "good quality" deadline.
-  WebmEncoder(const FilePath& output_path, int bitrate, bool realtime);
-
-  // Encodes video from a Nx(N*M) sprite, having M frames of size NxN with FPS
-  // |fps_n/fps_d|. Must be called on a thread that allows disk IO.
-  // Returns |true| iff encoding and writing to file is successful.
-  bool EncodeFromSprite(const SkBitmap& sprite, int fps_n, int fps_d);
-
- private:
-  // Writes global WebM header and starts a single video track. Returns |false|
-  // if there was an error opening file for writing.
-  bool WriteWebmHeader();
-
-  // Writes VPX packet to output file.
-  void WriteWebmBlock(const vpx_codec_cx_pkt_t* packet);
-
-  // Finishes video track and closes output file. Returns |false| if there were
-  // any error during encoding/writing file.
-  bool WriteWebmFooter();
-
-  // Starts a new WebM sub-element of given type. Those can be nested.
-  void StartSubElement(unsigned long class_id);
-
-  // Closes current top-level sub-element.
-  void EndSubElement();
-
-  // libmkv callbacks.
-  void EbmlWrite(const void* buffer, unsigned long len);
-  void EbmlSerialize(const void* buffer, int buffer_size, unsigned long len);
-
-  template <typename T>
-  void EbmlSerializeHelper(const T* buffer, unsigned long len);
-
-  // Video dimensions and FPS.
-  size_t width_;
-  size_t height_;
-  vpx_rational_t fps_;
-
-  // VPX config in use.
-  vpx_codec_enc_cfg_t config_;
-
-  // VPX parameters.
-  int bitrate_;
-  unsigned long deadline_;
-
-  // EbmlWriter context.
-  EbmlGlobal ebml_writer_;
-
-  // Stack with start offsets of currently open sub-elements.
-  std::stack<long int> ebml_sub_elements_;
-
-  FilePath output_path_;
-  FILE* output_;
-
-  // True if an error occured while encoding/writing to file.
-  bool has_errors_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebmEncoder);
-};
-
-}  // namespace chromeos
-
-}  // namespace media
-
-#endif  // MEDIA_WEBM_CHROMEOS_WEBM_ENCODER_H_