media/cast/video_receiver/codecs/vp8/vp8_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_CAST_RTP_RECEVIER_CODECS_VP8_VP8_DECODER_H_
   6 #define MEDIA_CAST_RTP_RECEVIER_CODECS_VP8_VP8_DECODER_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/threading/non_thread_safe.h"
  10 #include "media/cast/cast_config.h"
  11 #include "media/cast/cast_environment.h"
  12 #include "media/cast/cast_receiver.h"
  13 #include "third_party/libvpx/source/libvpx/vpx/vpx_decoder.h"
  14
  15 typedef struct vpx_codec_ctx vpx_dec_ctx_t;
  16
  17 // TODO(mikhal): Look into reusing VpxVideoDecoder.
  18 namespace media {
  19 namespace cast {
  20
  21 // This class is not thread safe; it's only called from the cast video decoder
  22 // thread.
  23 class Vp8Decoder : public base::NonThreadSafe {
  24  public:
  25   explicit Vp8Decoder(scoped_refptr<CastEnvironment> cast_environment);
  26   ~Vp8Decoder();
  27
  28   // Decode frame - The decoded frame will be passed via the callback.
  29   // Will return false in case of error, and then it's up to the caller to
  30   // release the memory.
  31   // Ownership of the encoded_frame does not pass to the Vp8Decoder.
  32   bool Decode(const transport::EncodedVideoFrame* encoded_frame,
  33               const base::TimeTicks render_time,
  34               const VideoFrameDecodedCallback& frame_decoded_cb);
  35
  36  private:
  37   // Initialize the decoder.
  38   void InitDecoder();
  39   scoped_ptr<vpx_dec_ctx_t> decoder_;
  40   scoped_refptr<CastEnvironment> cast_environment_;
  41
  42   DISALLOW_COPY_AND_ASSIGN(Vp8Decoder);
  43 };
  44
  45 }  // namespace cast
  46 }  // namespace media
  47
  48 #endif  // MEDIA_CAST_RTP_RECEVIER_CODECS_VP8_VP8_DECODER_H_