PPAPI: implement GetSupportedPreviewSizes

ppapi/proxy/image_capture_resource.h

+// Copyright 2014 The Chromium Authors. All rights reserved.

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

Should this file and the .cc not be added?

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

This file is needed unless we merge PPB_ImageCapture and PPB_CameraCapabilities
(which I don't recommend). See discussion in 884483007.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PPAPI_PROXY_IMAGE_CAPTURE_RESOURCE_H_
+#define PPAPI_PROXY_IMAGE_CAPTURE_RESOURCE_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "ppapi/c/pp_size.h"
+#include "ppapi/proxy/connection.h"
+#include "ppapi/proxy/plugin_resource.h"
+#include "ppapi/proxy/ppapi_proxy_export.h"
+#include "ppapi/shared_impl/resource.h"
+#include "ppapi/thunk/ppb_image_capture_api.h"
+
+namespace ppapi {
+namespace proxy {
+
+class CameraCapabilitiesResource;
+class ImageCaptureConfigResource;
+
+class PPAPI_PROXY_EXPORT ImageCaptureResource
+    : public PluginResource,
+      public thunk::PPB_ImageCapture_API {
+ public:
+  ImageCaptureResource(Connection connection, PP_Instance instance);
+
+  virtual ~ImageCaptureResource();
+
+  // Resource overrides:
+  virtual thunk::PPB_ImageCapture_API* AsPPB_ImageCapture_API() override {
+    return this;
+  }
+
+  // PPB_ImageCapture_API overrides:
+  virtual int32_t Open(PP_Var camera_source_id,
+                       scoped_refptr<TrackedCallback> callback) override;
+  virtual void Close() override;
+  virtual int32_t SetConfig(PP_Resource config,
+                            scoped_refptr<TrackedCallback> callback) override;
+  virtual int32_t GetConfig(PP_Resource* config,
+                            scoped_refptr<TrackedCallback> callback) override;
+  virtual int32_t GetCameraCapabilities(
+      PP_Resource* capabilities,
+      scoped_refptr<TrackedCallback> callback) override;
+  virtual int32_t CaptureStillImage(
+      PPB_ImageCapture_Private_ShutterCallback shutter_callback,
+      PPB_ImageCapture_Private_PreviewCallback preview_callback,
+      PPB_ImageCapture_Private_JpegCallback jpeg_callback,
+      int64_t* sequence_id) override;
+
+ private:
+  enum OpenState { BEFORE_OPEN, OPENED, CLOSED };
+
+  // Host -> plugin messages.
+  void OnPluginMsgGetPreviewSizesReply(
+    const ResourceMessageReplyParams& params,
+    const std::vector<PP_Size>& preview_sizes);
+
+  // reply to open
+  void OnPluginMsgOpenReply(const ResourceMessageReplyParams& params);
+
+  // other
+  bool IsOpened() const {return open_state_ == OPENED;}
+
+  // Holds a reference of the callback so that Close() can cancel it.
+  scoped_refptr<TrackedCallback> open_callback_;
+  OpenState open_state_;
+
+  PP_Resource* get_capabilities_output_;
+  scoped_refptr<TrackedCallback> get_capabilities_callback_;
+  scoped_refptr<CameraCapabilitiesResource> camera_capabilities_;
+
+  // scoped_refptr<ImageCaptureConfigResource> config_;
+
+  DISALLOW_COPY_AND_ASSIGN(ImageCaptureResource);
+};
+
+}  // namespace proxy
+}  // namespace ppapi
+
+#endif  // PPAPI_PROXY_IMAGE_CAPTURE_RESOURCE_H_