media/cdm/ppapi/external_clear_key/libvpx_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_LIBVPX_CDM_VIDEO_DECODER_H_
   6 #define MEDIA_CDM_PPAPI_EXTERNAL_CLEAR_KEY_LIBVPX_CDM_VIDEO_DECODER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "media/cdm/ppapi/api/content_decryption_module.h"
  11 #include "media/cdm/ppapi/external_clear_key/cdm_video_decoder.h"
  12
  13 struct vpx_codec_ctx;
  14 struct vpx_image;
  15
  16 namespace media {
  17
  18 class LibvpxCdmVideoDecoder : public CdmVideoDecoder {
  19  public:
  20   explicit LibvpxCdmVideoDecoder(CdmHost* host);
  21   ~LibvpxCdmVideoDecoder() override;
  22
  23   // CdmVideoDecoder implementation.
  24   bool Initialize(const cdm::VideoDecoderConfig& config) override;
  25   void Deinitialize() override;
  26   void Reset() override;
  27   cdm::Status DecodeFrame(const uint8_t* compressed_frame,
  28                           int32_t compressed_frame_size,
  29                           int64_t timestamp,
  30                           cdm::VideoFrame* decoded_frame) override;
  31   bool is_initialized() const override { return is_initialized_; }
  32
  33   // Returns true when |format| and |data_size| specify a supported video
  34   // output configuration.
  35   static bool IsValidOutputConfig(cdm::VideoFormat format,
  36                                   const cdm::Size& data_size);
  37
  38  private:
  39   // Allocates storage, then copies video frame stored in |vpx_image_| to
  40   // |cdm_video_frame|. Returns true when allocation and copy succeed.
  41   bool CopyVpxImageTo(cdm::VideoFrame* cdm_video_frame);
  42
  43   bool is_initialized_;
  44
  45   CdmHost* const host_;
  46
  47   vpx_codec_ctx* vpx_codec_;
  48   vpx_image* vpx_image_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(LibvpxCdmVideoDecoder);
  51 };
  52
  53 }  // namespace media
  54
  55 #endif  // MEDIA_CDM_PPAPI_EXTERNAL_CLEAR_KEY_LIBVPX_CDM_VIDEO_DECODER_H_