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_1_0>()) {
  73     PassRefFromConstructor(
  74         get_interface<PPB_VideoDecoder_1_0>()->Create(instance.pp_instance()));
  75   } else if (has_interface<PPB_VideoDecoder_0_2>()) {
  76     PassRefFromConstructor(
  77         get_interface<PPB_VideoDecoder_0_2>()->Create(instance.pp_instance()));
  78   } else if (has_interface<PPB_VideoDecoder_0_1>()) {
  79     PassRefFromConstructor(
  80         get_interface<PPB_VideoDecoder_0_1>()->Create(instance.pp_instance()));
  81   }
  82 }
  83
  84 VideoDecoder::VideoDecoder(const VideoDecoder& other) : Resource(other) {
  85 }
  86
  87 int32_t VideoDecoder::Initialize(const Graphics3D& context,
  88                                  PP_VideoProfile profile,
  89                                  PP_HardwareAcceleration acceleration,
  90                                  const CompletionCallback& cc) {
  91   if (has_interface<PPB_VideoDecoder_1_0>()) {
  92     return get_interface<PPB_VideoDecoder_1_0>()->Initialize(
  93         pp_resource(), context.pp_resource(), profile, acceleration,
  94         cc.pp_completion_callback());
  95   }
  96   if (has_interface<PPB_VideoDecoder_0_2>()) {
  97     return get_interface<PPB_VideoDecoder_0_2>()->Initialize(
  98         pp_resource(), context.pp_resource(), profile, acceleration,
  99         cc.pp_completion_callback());
 100   }
 101   if (has_interface<PPB_VideoDecoder_0_1>()) {
 102     if (acceleration == PP_HARDWAREACCELERATION_NONE)
 103       return cc.MayForce(PP_ERROR_NOTSUPPORTED);
 104     return get_interface<PPB_VideoDecoder_0_1>()->Initialize(
 105         pp_resource(),
 106         context.pp_resource(),
 107         profile,
 108         acceleration == PP_HARDWAREACCELERATION_WITHFALLBACK
 109             ? PP_TRUE
 110             : PP_FALSE,
 111         cc.pp_completion_callback());
 112   }
 113   return cc.MayForce(PP_ERROR_NOINTERFACE);
 114 }
 115
 116 int32_t VideoDecoder::Decode(uint32_t decode_id,
 117                              uint32_t size,
 118                              const void* buffer,
 119                              const CompletionCallback& cc) {
 120   if (has_interface<PPB_VideoDecoder_1_0>()) {
 121     return get_interface<PPB_VideoDecoder_1_0>()->Decode(
 122         pp_resource(), decode_id, size, buffer, cc.pp_completion_callback());
 123   }
 124   if (has_interface<PPB_VideoDecoder_0_2>()) {
 125     return get_interface<PPB_VideoDecoder_0_2>()->Decode(
 126         pp_resource(), decode_id, size, buffer, cc.pp_completion_callback());
 127   }
 128   if (has_interface<PPB_VideoDecoder_0_1>()) {
 129     return get_interface<PPB_VideoDecoder_0_1>()->Decode(
 130         pp_resource(), decode_id, size, buffer, cc.pp_completion_callback());
 131   }
 132   return cc.MayForce(PP_ERROR_NOINTERFACE);
 133 }
 134
 135 int32_t VideoDecoder::GetPicture(
 136     const CompletionCallbackWithOutput<PP_VideoPicture>& cc) {
 137   if (has_interface<PPB_VideoDecoder_1_0>()) {
 138     return get_interface<PPB_VideoDecoder_1_0>()->GetPicture(
 139         pp_resource(), cc.output(), cc.pp_completion_callback());
 140   }
 141   if (has_interface<PPB_VideoDecoder_0_2>()) {
 142     // Data for our callback wrapper. The callback handler will delete it.
 143     CallbackData_0_1* data = new CallbackData_0_1(cc);
 144     return get_interface<PPB_VideoDecoder_0_2>()->GetPicture(
 145         pp_resource(), &data->picture,
 146         PP_MakeCompletionCallback(&CallbackConverter, data));
 147   }
 148   if (has_interface<PPB_VideoDecoder_0_1>()) {
 149     // Data for our callback wrapper. The callback handler will delete it.
 150     CallbackData_0_1* data = new CallbackData_0_1(cc);
 151     return get_interface<PPB_VideoDecoder_0_1>()->GetPicture(
 152         pp_resource(), &data->picture,
 153         PP_MakeCompletionCallback(&CallbackConverter, data));
 154   }
 155   return cc.MayForce(PP_ERROR_NOINTERFACE);
 156 }
 157
 158 void VideoDecoder::RecyclePicture(const PP_VideoPicture& picture) {
 159   if (has_interface<PPB_VideoDecoder_1_0>()) {
 160     get_interface<PPB_VideoDecoder_1_0>()->RecyclePicture(pp_resource(),
 161                                                           &picture);
 162   } else if (has_interface<PPB_VideoDecoder_0_2>()) {
 163     get_interface<PPB_VideoDecoder_0_2>()->RecyclePicture(pp_resource(),
 164                                                           &picture);
 165   } else if (has_interface<PPB_VideoDecoder_0_1>()) {
 166     get_interface<PPB_VideoDecoder_0_1>()->RecyclePicture(pp_resource(),
 167                                                           &picture);
 168   }
 169 }
 170
 171 int32_t VideoDecoder::Flush(const CompletionCallback& cc) {
 172   if (has_interface<PPB_VideoDecoder_1_0>()) {
 173     return get_interface<PPB_VideoDecoder_1_0>()->Flush(
 174         pp_resource(), cc.pp_completion_callback());
 175   }
 176   if (has_interface<PPB_VideoDecoder_0_2>()) {
 177     return get_interface<PPB_VideoDecoder_0_2>()->Flush(
 178         pp_resource(), cc.pp_completion_callback());
 179   }
 180   if (has_interface<PPB_VideoDecoder_0_1>()) {
 181     return get_interface<PPB_VideoDecoder_0_1>()->Flush(
 182         pp_resource(), cc.pp_completion_callback());
 183   }
 184   return cc.MayForce(PP_ERROR_NOINTERFACE);
 185 }
 186
 187 int32_t VideoDecoder::Reset(const CompletionCallback& cc) {
 188   if (has_interface<PPB_VideoDecoder_1_0>()) {
 189     return get_interface<PPB_VideoDecoder_1_0>()->Reset(
 190         pp_resource(), cc.pp_completion_callback());
 191   }
 192   if (has_interface<PPB_VideoDecoder_0_2>()) {
 193     return get_interface<PPB_VideoDecoder_0_2>()->Reset(
 194         pp_resource(), cc.pp_completion_callback());
 195   }
 196   if (has_interface<PPB_VideoDecoder_0_1>()) {
 197     return get_interface<PPB_VideoDecoder_0_1>()->Reset(
 198         pp_resource(), cc.pp_completion_callback());
 199   }
 200   return cc.MayForce(PP_ERROR_NOINTERFACE);
 201 }
 202
 203 }  // namespace pp