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// Copyright (c) 2012 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.
#ifndef PPAPI_SHARED_IMPL_PPB_VIDEO_CAPTURE_SHARED_H_
#define PPAPI_SHARED_IMPL_PPB_VIDEO_CAPTURE_SHARED_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "ppapi/shared_impl/ppapi_shared_export.h"
#include "ppapi/shared_impl/resource.h"
#include "ppapi/shared_impl/tracked_callback.h"
#include "ppapi/thunk/ppb_video_capture_api.h"
namespace ppapi {
class PPAPI_SHARED_EXPORT PPB_VideoCapture_Shared
: public Resource,
NON_EXPORTED_BASE(public thunk::PPB_VideoCapture_API) {
public:
explicit PPB_VideoCapture_Shared(PP_Instance instance);
explicit PPB_VideoCapture_Shared(const HostResource& host_resource);
virtual ~PPB_VideoCapture_Shared();
// Resource implementation.
virtual thunk::PPB_VideoCapture_API* AsPPB_VideoCapture_API() OVERRIDE;
// PPB_VideoCapture_API implementation.
virtual int32_t EnumerateDevices(
PP_Resource* devices,
const PP_CompletionCallback& callback) OVERRIDE;
virtual int32_t Open(const std::string& device_id,
const PP_VideoCaptureDeviceInfo_Dev& requested_info,
uint32_t buffer_count,
const PP_CompletionCallback& callback) OVERRIDE;
virtual int32_t StartCapture() OVERRIDE;
virtual int32_t ReuseBuffer(uint32_t buffer) OVERRIDE;
virtual int32_t StopCapture() OVERRIDE;
virtual void Close() OVERRIDE;
virtual int32_t StartCapture0_1(
const PP_VideoCaptureDeviceInfo_Dev& requested_info,
uint32_t buffer_count) OVERRIDE;
virtual const std::vector<DeviceRefData>& GetDeviceRefData() const OVERRIDE;
void OnEnumerateDevicesComplete(int32_t result,
const std::vector<DeviceRefData>& devices);
void OnOpenComplete(int32_t result);
protected:
enum OpenState {
BEFORE_OPEN,
OPENED,
CLOSED
};
// Subclasses should implement these methods to do impl- and proxy-specific
// work.
virtual int32_t InternalEnumerateDevices(
PP_Resource* devices,
const PP_CompletionCallback& callback) = 0;
virtual int32_t InternalOpen(
const std::string& device_id,
const PP_VideoCaptureDeviceInfo_Dev& requested_info,
uint32_t buffer_count,
const PP_CompletionCallback& callback) = 0;
virtual int32_t InternalStartCapture() = 0;
virtual int32_t InternalReuseBuffer(uint32_t buffer) = 0;
virtual int32_t InternalStopCapture() = 0;
virtual void InternalClose() = 0;
virtual int32_t InternalStartCapture0_1(
const PP_VideoCaptureDeviceInfo_Dev& requested_info,
uint32_t buffer_count) = 0;
virtual const std::vector<DeviceRefData>& InternalGetDeviceRefData(
) const = 0;
// Checks whether |status| is expected and sets |status_| if yes. If |forced|
// is set to true, this method will bypass sanity check and always set
// |status_|.
bool SetStatus(PP_VideoCaptureStatus_Dev status, bool forced);
OpenState open_state_;
PP_VideoCaptureStatus_Dev status_;
scoped_refptr<TrackedCallback> enumerate_devices_callback_;
scoped_refptr<TrackedCallback> open_callback_;
// Output parameter of EnumerateDevices(). It should not be accessed after
// |enumerate_devices_callback_| is run.
PP_Resource* devices_;
ResourceObjectType resource_object_type_;
private:
DISALLOW_COPY_AND_ASSIGN(PPB_VideoCapture_Shared);
};
} // namespace ppapi
#endif // PPAPI_SHARED_IMPL_PPB_VIDEO_CAPTURE_SHARED_H_
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