src/ppapi/cpp/video_decoder.cc

   1 // Copyright (c) 2014 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/video_decoder.h"
   6
   7 #include "ppapi/c/pp_errors.h"
   8 #include "ppapi/c/ppb_video_decoder.h"
   9 #include "ppapi/cpp/completion_callback.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 template <>
  19 const char* interface_name<PPB_VideoDecoder_0_1>() {
  20   return PPB_VIDEODECODER_INTERFACE_0_1;
  21 }
  22
  23 template <>
  24 const char* interface_name<PPB_VideoDecoder_0_2>() {
  25   return PPB_VIDEODECODER_INTERFACE_0_2;
  26 }
  27
  28 template <>
  29 const char* interface_name<PPB_VideoDecoder_1_0>() {
  30   return PPB_VIDEODECODER_INTERFACE_1_0;
  31 }
  32
  33 // This struct is used to adapt CompletionCallbackWithOutput<PP_VideoPicture> to
  34 // the pre-1.0 APIs, which return PP_VideoPicture_0_1. This struct is allocated
  35 // on the heap, and deleted in CallbackConverter.
  36 struct CallbackData_0_1 {
  37   explicit CallbackData_0_1(
  38       const CompletionCallbackWithOutput<PP_VideoPicture>& cc)
  39       : original_picture(cc.output()),
  40         original_callback(cc.pp_completion_callback()) {}
  41   PP_VideoPicture_0_1 picture;
  42   PP_VideoPicture* original_picture;
  43   PP_CompletionCallback original_callback;
  44 };
  45
  46 // Convert a 1.0 style callback to pre-1.0 callback.
  47 void CallbackConverter(void* user_data, int32_t result) {
  48   CallbackData_0_1* data = static_cast<CallbackData_0_1*>(user_data);
  49   if (result == PP_OK) {
  50     PP_VideoPicture_0_1* picture = &data->picture;
  51     PP_VideoPicture* original_picture = data->original_picture;
  52     original_picture->decode_id = picture->decode_id;
  53     original_picture->texture_id = picture->texture_id;
  54     original_picture->texture_target = picture->texture_target;
  55     original_picture->texture_size = picture->texture_size;
  56     // Set visible_rect to the entire picture.
  57     original_picture->visible_rect = PP_MakeRectFromXYWH(
  58         0, 0, picture->texture_size.width, picture->texture_size.height);
  59   }
  60
  61   // Now execute the original callback.
  62   PP_RunCompletionCallback(&data->original_callback, result);
  63   delete data;
  64 }
  65
  66 }  // namespace
  67
  68 VideoDecoder::VideoDecoder() {
  69 }
  70
  71 VideoDecoder::VideoDecoder(const InstanceHandle& instance) {
  72   if (has_interface<PPB_VideoDecoder_0_1>()) {
  73     PassRefFromConstructor(
  74         get_interface<PPB_VideoDecoder_0_1>()->Create(instance.pp_instance()));
  75   }
  76 }
  77
  78 VideoDecoder::VideoDecoder(const VideoDecoder& other) : Resource(other) {
  79 }
  80
  81 int32_t VideoDecoder::Initialize(const Graphics3D& context,
  82                                  PP_VideoProfile profile,
  83                                  PP_HardwareAcceleration acceleration,
  84                                  const CompletionCallback& cc) {
  85   if (has_interface<PPB_VideoDecoder_1_0>()) {
  86     return get_interface<PPB_VideoDecoder_1_0>()->Initialize(
  87         pp_resource(), context.pp_resource(), profile, acceleration,
  88         cc.pp_completion_callback());
  89   }
  90   if (has_interface<PPB_VideoDecoder_0_2>()) {
  91     return get_interface<PPB_VideoDecoder_0_2>()->Initialize(
  92         pp_resource(), context.pp_resource(), profile, acceleration,
  93         cc.pp_completion_callback());
  94   }
  95   if (has_interface<PPB_VideoDecoder_0_1>()) {
  96     if (acceleration == PP_HARDWAREACCELERATION_NONE)
  97       return cc.MayForce(PP_ERROR_NOTSUPPORTED);
  98     return get_interface<PPB_VideoDecoder_0_1>()->Initialize(
  99         pp_resource(),
 100         context.pp_resource(),
 101         profile,
 102         acceleration == PP_HARDWAREACCELERATION_WITHFALLBACK
 103             ? PP_TRUE
 104             : PP_FALSE,
 105         cc.pp_completion_callback());
 106   }
 107   return cc.MayForce(PP_ERROR_NOINTERFACE);
 108 }
 109
 110 int32_t VideoDecoder::Decode(uint32_t decode_id,
 111                              uint32_t size,
 112                              const void* buffer,
 113                              const CompletionCallback& cc) {
 114   if (has_interface<PPB_VideoDecoder_1_0>()) {
 115     return get_interface<PPB_VideoDecoder_1_0>()->Decode(
 116         pp_resource(), decode_id, size, buffer, cc.pp_completion_callback());
 117   }
 118   if (has_interface<PPB_VideoDecoder_0_2>()) {
 119     return get_interface<PPB_VideoDecoder_0_2>()->Decode(
 120         pp_resource(), decode_id, size, buffer, cc.pp_completion_callback());
 121   }
 122   if (has_interface<PPB_VideoDecoder_0_1>()) {
 123     return get_interface<PPB_VideoDecoder_0_1>()->Decode(
 124         pp_resource(), decode_id, size, buffer, cc.pp_completion_callback());
 125   }
 126   return cc.MayForce(PP_ERROR_NOINTERFACE);
 127 }
 128
 129 int32_t VideoDecoder::GetPicture(
 130     const CompletionCallbackWithOutput<PP_VideoPicture>& cc) {
 131   if (has_interface<PPB_VideoDecoder_1_0>()) {
 132     return get_interface<PPB_VideoDecoder_1_0>()->GetPicture(
 133         pp_resource(), cc.output(), cc.pp_completion_callback());
 134   }
 135   if (has_interface<PPB_VideoDecoder_0_2>()) {
 136     // Data for our callback wrapper. The callback handler will delete it.
 137     CallbackData_0_1* data = new CallbackData_0_1(cc);
 138     return get_interface<PPB_VideoDecoder_0_2>()->GetPicture(
 139         pp_resource(), &data->picture,
 140         PP_MakeCompletionCallback(&CallbackConverter, data));
 141   }
 142   if (has_interface<PPB_VideoDecoder_0_1>()) {
 143     // Data for our callback wrapper. The callback handler will delete it.
 144     CallbackData_0_1* data = new CallbackData_0_1(cc);
 145     return get_interface<PPB_VideoDecoder_0_1>()->GetPicture(
 146         pp_resource(), &data->picture,
 147         PP_MakeCompletionCallback(&CallbackConverter, data));
 148   }
 149   return cc.MayForce(PP_ERROR_NOINTERFACE);
 150 }
 151
 152 void VideoDecoder::RecyclePicture(const PP_VideoPicture& picture) {
 153   if (has_interface<PPB_VideoDecoder_1_0>()) {
 154     get_interface<PPB_VideoDecoder_1_0>()->RecyclePicture(pp_resource(),
 155                                                           &picture);
 156   } else if (has_interface<PPB_VideoDecoder_0_2>()) {
 157     get_interface<PPB_VideoDecoder_0_2>()->RecyclePicture(pp_resource(),
 158                                                           &picture);
 159   } else if (has_interface<PPB_VideoDecoder_0_1>()) {
 160     get_interface<PPB_VideoDecoder_0_1>()->RecyclePicture(pp_resource(),
 161                                                           &picture);
 162   }
 163 }
 164
 165 int32_t VideoDecoder::Flush(const CompletionCallback& cc) {
 166   if (has_interface<PPB_VideoDecoder_1_0>()) {
 167     return get_interface<PPB_VideoDecoder_1_0>()->Flush(
 168         pp_resource(), cc.pp_completion_callback());
 169   }
 170   if (has_interface<PPB_VideoDecoder_0_2>()) {
 171     return get_interface<PPB_VideoDecoder_0_2>()->Flush(
 172         pp_resource(), cc.pp_completion_callback());
 173   }
 174   if (has_interface<PPB_VideoDecoder_0_1>()) {
 175     return get_interface<PPB_VideoDecoder_0_1>()->Flush(
 176         pp_resource(), cc.pp_completion_callback());
 177   }
 178   return cc.MayForce(PP_ERROR_NOINTERFACE);
 179 }
 180
 181 int32_t VideoDecoder::Reset(const CompletionCallback& cc) {
 182   if (has_interface<PPB_VideoDecoder_1_0>()) {
 183     return get_interface<PPB_VideoDecoder_1_0>()->Reset(
 184         pp_resource(), cc.pp_completion_callback());
 185   }
 186   if (has_interface<PPB_VideoDecoder_0_2>()) {
 187     return get_interface<PPB_VideoDecoder_0_2>()->Reset(
 188         pp_resource(), cc.pp_completion_callback());
 189   }
 190   if (has_interface<PPB_VideoDecoder_0_1>()) {
 191     return get_interface<PPB_VideoDecoder_0_1>()->Reset(
 192         pp_resource(), cc.pp_completion_callback());
 193   }
 194   return cc.MayForce(PP_ERROR_NOINTERFACE);
 195 }
 196
 197 }  // namespace pp