media/cdm/ppapi/external_clear_key/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_EXTERNAL_CLEAR_KEY_CDM_VIDEO_DECODER_H_
   6 #define MEDIA_CDM_PPAPI_EXTERNAL_CLEAR_KEY_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 #include "media/cdm/ppapi/external_clear_key/clear_key_cdm_common.h"
  12
  13 namespace media {
  14
  15 class CdmVideoDecoder {
  16  public:
  17   virtual ~CdmVideoDecoder() {}
  18   virtual bool Initialize(const cdm::VideoDecoderConfig& config) = 0;
  19   virtual void Deinitialize() = 0;
  20   virtual void Reset() = 0;
  21   virtual bool is_initialized() const = 0;
  22
  23   // Decodes |compressed_frame|. Stores output frame in |decoded_frame| and
  24   // returns |cdm::kSuccess| when an output frame is available. Returns
  25   // |cdm::kNeedMoreData| when |compressed_frame| does not produce an output
  26   // frame. Returns |cdm::kDecodeError| when decoding fails.
  27   //
  28   // A null |compressed_frame| will attempt to flush the decoder of any
  29   // remaining frames. |compressed_frame_size| and |timestamp| are ignored.
  30   virtual cdm::Status DecodeFrame(const uint8_t* compressed_frame,
  31                                   int32_t compressed_frame_size,
  32                                   int64_t timestamp,
  33                                   cdm::VideoFrame* decoded_frame) = 0;
  34 };
  35
  36 // Initializes appropriate video decoder based on GYP flags and the value of
  37 // |config.codec|. Returns a scoped_ptr containing a non-null initialized
  38 // CdmVideoDecoder* upon success.
  39 scoped_ptr<CdmVideoDecoder> CreateVideoDecoder(
  40     ClearKeyCdmHost* host, const cdm::VideoDecoderConfig& config);
  41
  42 }  // namespace media
  43
  44 #endif  // MEDIA_CDM_PPAPI_EXTERNAL_CLEAR_KEY_CDM_VIDEO_DECODER_H_