content/renderer/pepper/ppb_video_decoder_impl.h

   1 // Copyright (c) 2012 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 CONTENT_RENDERER_PEPPER_PPB_VIDEO_DECODER_IMPL_H_
   6 #define CONTENT_RENDERER_PEPPER_PPB_VIDEO_DECODER_IMPL_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/ref_counted.h"
  11 #include "media/video/video_decode_accelerator.h"
  12 #include "ppapi/c/dev/pp_video_dev.h"
  13 #include "ppapi/c/dev/ppp_video_decoder_dev.h"
  14 #include "ppapi/c/pp_var.h"
  15 #include "ppapi/shared_impl/ppb_video_decoder_shared.h"
  16 #include "ppapi/shared_impl/resource.h"
  17 #include "ppapi/thunk/ppb_video_decoder_dev_api.h"
  18
  19 struct PP_PictureBuffer_Dev;
  20 struct PP_VideoBitstreamBuffer_Dev;
  21
  22 namespace content {
  23 class PPB_Graphics3D_Impl;
  24
  25 class PPB_VideoDecoder_Impl : public ppapi::PPB_VideoDecoder_Shared,
  26                               public media::VideoDecodeAccelerator::Client {
  27  public:
  28   // See PPB_VideoDecoder_Dev::Create.  Returns 0 on failure to create &
  29   // initialize.
  30   static PP_Resource Create(PP_Instance instance,
  31                             PP_Resource graphics_context,
  32                             PP_VideoDecoder_Profile profile);
  33
  34   // PPB_VideoDecoder_Dev_API implementation.
  35   int32_t Decode(const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
  36                  scoped_refptr<ppapi::TrackedCallback> callback) override;
  37   void AssignPictureBuffers(uint32_t no_of_buffers,
  38                             const PP_PictureBuffer_Dev* buffers) override;
  39   void ReusePictureBuffer(int32_t picture_buffer_id) override;
  40   int32_t Flush(scoped_refptr<ppapi::TrackedCallback> callback) override;
  41   int32_t Reset(scoped_refptr<ppapi::TrackedCallback> callback) override;
  42   void Destroy() override;
  43
  44   // media::VideoDecodeAccelerator::Client implementation.
  45   void ProvidePictureBuffers(uint32 requested_num_of_buffers,
  46                              const gfx::Size& dimensions,
  47                              uint32 texture_target) override;
  48   void DismissPictureBuffer(int32 picture_buffer_id) override;
  49   void PictureReady(const media::Picture& picture) override;
  50   void NotifyError(media::VideoDecodeAccelerator::Error error) override;
  51   void NotifyFlushDone() override;
  52   void NotifyEndOfBitstreamBuffer(int32 buffer_id) override;
  53   void NotifyResetDone() override;
  54
  55  private:
  56   ~PPB_VideoDecoder_Impl() override;
  57
  58   explicit PPB_VideoDecoder_Impl(PP_Instance instance);
  59   bool Init(PP_Resource graphics_context,
  60             PP_VideoDecoder_Profile profile);
  61   // Returns the associated PPP_VideoDecoder_Dev interface to use when
  62   // making calls on the plugin. This fetches the interface lazily. For
  63   // out-of-process plugins, this means a synchronous message to the plugin,
  64   // so it's important to never call this in response to a synchronous
  65   // plugin->renderer message (such as the Create message).
  66   const PPP_VideoDecoder_Dev* GetPPP();
  67
  68   // This is NULL before initialization, and after destruction.
  69   // Holds a GpuVideoDecodeAcceleratorHost.
  70   scoped_ptr<media::VideoDecodeAccelerator> decoder_;
  71
  72   // The interface to use when making calls on the plugin. For the most part,
  73   // methods should not use this directly but should call GetPPP() instead.
  74   const PPP_VideoDecoder_Dev* ppp_videodecoder_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(PPB_VideoDecoder_Impl);
  77 };
  78
  79 }  // namespace content
  80
  81 #endif  // CONTENT_RENDERER_PEPPER_PPB_VIDEO_DECODER_IMPL_H_