PPAPI: implement GetSupportedPreviewSizes

ppapi/cpp/private/camera_capabilities_private.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/cpp/private/camera_capabilities_private.h"
+
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/c/pp_size.h"
+#include "ppapi/cpp/instance_handle.h"
+#include "ppapi/cpp/module_impl.h"
+
+namespace pp {
+
+namespace {
+
+template <>
+const char* interface_name<PPB_CameraCapabilities_Private_0_1>() {
+  return PPB_CAMERACAPABILITIES_PRIVATE_INTERFACE_0_1;
+}
+
+}  // namespace
+
+CameraCapabilities_Private::CameraCapabilities_Private() {
+}
+
+CameraCapabilities_Private::CameraCapabilities_Private(
+    const CameraCapabilities_Private& other)
+    : Resource(other) {
+}
+
+CameraCapabilities_Private::CameraCapabilities_Private(const Resource& resource)
+    : Resource(resource) {
+  PP_DCHECK(IsCameraCapabilities(resource));
+}
+
+CameraCapabilities_Private::CameraCapabilities_Private(PassRef,
+                                                       PP_Resource resource)
+    : Resource(PASS_REF, resource) {
+}
+
+CameraCapabilities_Private::~CameraCapabilities_Private() {
+}
+
+void CameraCapabilities_Private::GetSupportedPreviewSizes(
+    std::vector<Size>* preview_sizes) {
+  if (!has_interface<PPB_CameraCapabilities_Private_0_1>()) {
+    PP_DCHECK(false);
+    return;
+  }
+
+  int32_t array_size;
+  PP_Size* array;
+  get_interface<PPB_CameraCapabilities_Private_0_1>()->GetSupportedPreviewSizes(
+      pp_resource(), &array_size, &array);
+  preview_sizes->clear();

[dmichael (off chromium), 2015/02/03 19:21:29]

might as well:
preview_sizes->reserve(array_size);

[Justin Chuang, 2015/02/04 17:44:24]

Done. Thanks.

+  for (int32_t i = 0; i < array_size; i++) {
+    preview_sizes->push_back(Size(array[i]));
+  }
+}
+
+// static
+bool CameraCapabilities_Private::IsCameraCapabilities(
+    const Resource& resource) {
+  if (!has_interface<PPB_CameraCapabilities_Private_0_1>())
+    return false;
+
+  return PP_ToBool(
+      get_interface<PPB_CameraCapabilities_Private_0_1>()->IsCameraCapabilities(
+          resource.pp_resource()));
+}
+
+}  // namespace pp