ppapi/cpp/dev/video_capture_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_capture_dev.h"
   6
   7 #include "ppapi/c/dev/ppb_video_capture_dev.h"
   8 #include "ppapi/c/pp_errors.h"
   9 #include "ppapi/cpp/dev/resource_array_dev.h"
  10 #include "ppapi/cpp/instance_handle.h"
  11 #include "ppapi/cpp/module_impl.h"
  12
  13 namespace pp {
  14
  15 namespace {
  16
  17 template <> const char* interface_name<PPB_VideoCapture_Dev_0_2>() {
  18   return PPB_VIDEOCAPTURE_DEV_INTERFACE_0_2;
  19 }
  20
  21 template <> const char* interface_name<PPB_VideoCapture_Dev_0_3>() {
  22   return PPB_VIDEOCAPTURE_DEV_INTERFACE_0_3;
  23 }
  24
  25 }  // namespace
  26
  27 VideoCapture_Dev::VideoCapture_Dev(const InstanceHandle& instance) {
  28   if (has_interface<PPB_VideoCapture_Dev_0_3>()) {
  29     PassRefFromConstructor(get_interface<PPB_VideoCapture_Dev_0_3>()->Create(
  30         instance.pp_instance()));
  31   } else if (has_interface<PPB_VideoCapture_Dev_0_2>()) {
  32     PassRefFromConstructor(get_interface<PPB_VideoCapture_Dev_0_2>()->Create(
  33         instance.pp_instance()));
  34   }
  35 }
  36
  37 VideoCapture_Dev::VideoCapture_Dev(PP_Resource resource)
  38     : Resource(resource) {
  39 }
  40
  41 VideoCapture_Dev::~VideoCapture_Dev() {
  42 }
  43
  44 // static
  45 bool VideoCapture_Dev::IsAvailable() {
  46   return has_interface<PPB_VideoCapture_Dev_0_3>() ||
  47          has_interface<PPB_VideoCapture_Dev_0_2>();
  48 }
  49
  50 int32_t VideoCapture_Dev::EnumerateDevices(
  51     const CompletionCallbackWithOutput<std::vector<DeviceRef_Dev> >& callback) {
  52   if (has_interface<PPB_VideoCapture_Dev_0_3>()) {
  53     return get_interface<PPB_VideoCapture_Dev_0_3>()->EnumerateDevices(
  54         pp_resource(), callback.output(), callback.pp_completion_callback());
  55   }
  56
  57   if (has_interface<PPB_VideoCapture_Dev_0_2>()) {
  58     if (!callback.pp_completion_callback().func)
  59       return callback.MayForce(PP_ERROR_BLOCKS_MAIN_THREAD);
  60
  61     // ArrayOutputCallbackConverter is responsible to delete it.
  62     ResourceArray_Dev::ArrayOutputCallbackData* data =
  63         new ResourceArray_Dev::ArrayOutputCallbackData(
  64             callback.output(), callback.pp_completion_callback());
  65     return get_interface<PPB_VideoCapture_Dev_0_2>()->EnumerateDevices(
  66         pp_resource(), &data->resource_array_output,
  67         PP_MakeCompletionCallback(
  68             &ResourceArray_Dev::ArrayOutputCallbackConverter, data));
  69   }
  70
  71   return callback.MayForce(PP_ERROR_NOINTERFACE);
  72 }
  73
  74 int32_t VideoCapture_Dev::MonitorDeviceChange(
  75     PP_MonitorDeviceChangeCallback callback,
  76     void* user_data) {
  77   if (has_interface<PPB_VideoCapture_Dev_0_3>()) {
  78     return get_interface<PPB_VideoCapture_Dev_0_3>()->MonitorDeviceChange(
  79         pp_resource(), callback, user_data);
  80   }
  81
  82   return PP_ERROR_NOINTERFACE;
  83 }
  84
  85 int32_t VideoCapture_Dev::Open(
  86     const DeviceRef_Dev& device_ref,
  87     const PP_VideoCaptureDeviceInfo_Dev& requested_info,
  88     uint32_t buffer_count,
  89     const CompletionCallback& callback) {
  90   if (has_interface<PPB_VideoCapture_Dev_0_3>()) {
  91     return get_interface<PPB_VideoCapture_Dev_0_3>()->Open(
  92         pp_resource(), device_ref.pp_resource(), &requested_info, buffer_count,
  93         callback.pp_completion_callback());
  94   }
  95   if (has_interface<PPB_VideoCapture_Dev_0_2>()) {
  96     return get_interface<PPB_VideoCapture_Dev_0_2>()->Open(
  97         pp_resource(), device_ref.pp_resource(), &requested_info, buffer_count,
  98         callback.pp_completion_callback());
  99   }
 100
 101   return callback.MayForce(PP_ERROR_NOINTERFACE);
 102 }
 103
 104 int32_t VideoCapture_Dev::StartCapture() {
 105   if (has_interface<PPB_VideoCapture_Dev_0_3>()) {
 106     return get_interface<PPB_VideoCapture_Dev_0_3>()->StartCapture(
 107         pp_resource());
 108   }
 109   if (has_interface<PPB_VideoCapture_Dev_0_2>()) {
 110     return get_interface<PPB_VideoCapture_Dev_0_2>()->StartCapture(
 111         pp_resource());
 112   }
 113
 114   return PP_ERROR_NOINTERFACE;
 115 }
 116
 117 int32_t VideoCapture_Dev::ReuseBuffer(uint32_t buffer) {
 118   if (has_interface<PPB_VideoCapture_Dev_0_3>()) {
 119     return get_interface<PPB_VideoCapture_Dev_0_3>()->ReuseBuffer(pp_resource(),
 120                                                                   buffer);
 121   }
 122   if (has_interface<PPB_VideoCapture_Dev_0_2>()) {
 123     return get_interface<PPB_VideoCapture_Dev_0_2>()->ReuseBuffer(pp_resource(),
 124                                                                   buffer);
 125   }
 126
 127   return PP_ERROR_NOINTERFACE;
 128 }
 129
 130 int32_t VideoCapture_Dev::StopCapture() {
 131   if (has_interface<PPB_VideoCapture_Dev_0_3>()) {
 132     return get_interface<PPB_VideoCapture_Dev_0_3>()->StopCapture(
 133         pp_resource());
 134   }
 135   if (has_interface<PPB_VideoCapture_Dev_0_2>()) {
 136     return get_interface<PPB_VideoCapture_Dev_0_2>()->StopCapture(
 137         pp_resource());
 138   }
 139
 140   return PP_ERROR_NOINTERFACE;
 141 }
 142
 143 void VideoCapture_Dev::Close() {
 144   if (has_interface<PPB_VideoCapture_Dev_0_3>()) {
 145     get_interface<PPB_VideoCapture_Dev_0_3>()->Close(pp_resource());
 146   } else if (has_interface<PPB_VideoCapture_Dev_0_2>()) {
 147     get_interface<PPB_VideoCapture_Dev_0_2>()->Close(pp_resource());
 148   }
 149 }
 150
 151 }  // namespace pp