src/ppapi/cpp/dev/video_decoder_client_dev.cc

   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 #include "ppapi/cpp/dev/video_decoder_client_dev.h"
   6
   7 #include "ppapi/c/dev/ppp_video_decoder_dev.h"
   8 #include "ppapi/cpp/dev/video_decoder_dev.h"
   9 #include "ppapi/cpp/instance.h"
  10 #include "ppapi/cpp/instance_handle.h"
  11 #include "ppapi/cpp/module.h"
  12 #include "ppapi/cpp/module_impl.h"
  13
  14 namespace pp {
  15
  16 namespace {
  17
  18 const char kPPPVideoDecoderInterface[] = PPP_VIDEODECODER_DEV_INTERFACE;
  19
  20 // Callback to provide buffers for the decoded output pictures.
  21 void ProvidePictureBuffers(PP_Instance instance,
  22                            PP_Resource decoder,
  23                            uint32_t req_num_of_bufs,
  24                            const PP_Size* dimensions,
  25                            uint32_t texture_target) {
  26   void* object = Instance::GetPerInstanceObject(instance,
  27                                                 kPPPVideoDecoderInterface);
  28   if (!object)
  29     return;
  30   static_cast<VideoDecoderClient_Dev*>(object)->ProvidePictureBuffers(
  31       decoder, req_num_of_bufs, *dimensions, texture_target);
  32 }
  33
  34 void DismissPictureBuffer(PP_Instance instance,
  35                           PP_Resource decoder,
  36                           int32_t picture_buffer_id) {
  37   void* object = Instance::GetPerInstanceObject(instance,
  38                                                 kPPPVideoDecoderInterface);
  39   if (!object)
  40     return;
  41   static_cast<VideoDecoderClient_Dev*>(object)->DismissPictureBuffer(
  42       decoder, picture_buffer_id);
  43 }
  44
  45 void PictureReady(PP_Instance instance,
  46                   PP_Resource decoder,
  47                   const PP_Picture_Dev* picture) {
  48   void* object = Instance::GetPerInstanceObject(instance,
  49                                                 kPPPVideoDecoderInterface);
  50   if (!object)
  51     return;
  52   static_cast<VideoDecoderClient_Dev*>(object)->PictureReady(decoder, *picture);
  53 }
  54
  55 void NotifyError(PP_Instance instance,
  56                  PP_Resource decoder,
  57                  PP_VideoDecodeError_Dev error) {
  58   void* object = Instance::GetPerInstanceObject(instance,
  59                                                 kPPPVideoDecoderInterface);
  60   if (!object)
  61     return;
  62   static_cast<VideoDecoderClient_Dev*>(object)->NotifyError(decoder, error);
  63 }
  64
  65 static PPP_VideoDecoder_Dev videodecoder_interface = {
  66   &ProvidePictureBuffers,
  67   &DismissPictureBuffer,
  68   &PictureReady,
  69   &NotifyError,
  70 };
  71
  72 }  // namespace
  73
  74 VideoDecoderClient_Dev::VideoDecoderClient_Dev(Instance* instance)
  75     : associated_instance_(instance) {
  76   Module::Get()->AddPluginInterface(kPPPVideoDecoderInterface,
  77                                     &videodecoder_interface);
  78   instance->AddPerInstanceObject(kPPPVideoDecoderInterface, this);
  79 }
  80
  81 VideoDecoderClient_Dev::~VideoDecoderClient_Dev() {
  82   Instance::RemovePerInstanceObject(associated_instance_,
  83                                     kPPPVideoDecoderInterface, this);
  84 }
  85
  86 }  // namespace pp