media/cdm/ppapi/cdm_video_decoder.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_CDM_PPAPI_CDM_VIDEO_DECODER_H_
   6 #define MEDIA_CDM_PPAPI_CDM_VIDEO_DECODER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "media/cdm/ppapi/api/content_decryption_module.h"
  11
  12 namespace media {
  13
  14 class CdmVideoDecoder {
  15  public:
  16   virtual ~CdmVideoDecoder() {}
  17   virtual bool Initialize(const cdm::VideoDecoderConfig& config) = 0;
  18   virtual void Deinitialize() = 0;
  19   virtual void Reset() = 0;
  20   virtual bool is_initialized() const = 0;
  21
  22   // Decodes |compressed_frame|. Stores output frame in |decoded_frame| and
  23   // returns |cdm::kSuccess| when an output frame is available. Returns
  24   // |cdm::kNeedMoreData| when |compressed_frame| does not produce an output
  25   // frame. Returns |cdm::kDecodeError| when decoding fails.
  26   //
  27   // A null |compressed_frame| will attempt to flush the decoder of any
  28   // remaining frames. |compressed_frame_size| and |timestamp| are ignored.
  29   virtual cdm::Status DecodeFrame(const uint8_t* compressed_frame,
  30                                   int32_t compressed_frame_size,
  31                                   int64_t timestamp,
  32                                   cdm::VideoFrame* decoded_frame) = 0;
  33 };
  34
  35 // Initializes appropriate video decoder based on GYP flags and the value of
  36 // |config.codec|. Returns a scoped_ptr containing a non-null initialized
  37 // CdmVideoDecoder* upon success.
  38 scoped_ptr<CdmVideoDecoder> CreateVideoDecoder(
  39     cdm::Host* host, const cdm::VideoDecoderConfig& config);
  40
  41 }  // namespace media
  42
  43 #endif  // MEDIA_CDM_PPAPI_CDM_VIDEO_DECODER_H_