PCameras.ipdl - mozsearch

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this file,

 * You can obtain one at http://mozilla.org/MPL/2.0/. */

include protocol PContent;

include protocol PBackground;

include PBackgroundSharedTypes;

include "mozilla/dom/MediaIPCUtils.h";

using mozilla::camera::CaptureEngine from "mozilla/media/CamerasTypes.h";

using mozilla::TimeStamp from "mozilla/TimeStamp.h";

using mozilla::media::TimeUnit from "TimeUnits.h";

namespace mozilla {

namespace camera {

// IPC analog for webrtc::VideoCaptureCapability

struct VideoCaptureCapability

  int width;

  int height;

  int maxFPS;

  int videoType;

  bool interlaced;

};

// IPC analog for webrtc::VideoFrame

// the described buffer is transported seperately in a Shmem

// See VideoFrameUtils.h

struct VideoFrameProperties

  TimeStamp captureTime;

  // Size of image data within the ShMem,

  // the ShMem is at least this large

  uint32_t bufferSize;

  // From webrtc::VideoFrame

  uint32_t rtpTimeStamp;

  int64_t ntpTimeMs;

  int64_t renderTimeMs;

  TimeUnit processingDuration;

  // See webrtc/**/rotation.h

  int rotation;

  int yAllocatedSize;

  int uAllocatedSize;

  int vAllocatedSize;

  // From webrtc::VideoFrameBuffer

  int width;

  int height;

  int yStride;

  int uStride;

  int vStride;

};

[ManualDealloc, ChildImpl=virtual, ParentImpl=virtual]

async protocol PCameras

  manager PBackground;

child:

  async CaptureEnded(int streamId);

  // transfers ownership of |buffer| from parent to child

  async DeliverFrame(int streamId, Shmem buffer, VideoFrameProperties props);

  async DeviceChange();

  async ReplyNumberOfCaptureDevices(int deviceCount);

  async ReplyNumberOfCapabilities(int capabilityCount);

  async ReplyAllocateCapture(int captureId);

  async ReplyGetCaptureCapability(VideoCaptureCapability cap);

  async ReplyGetCaptureDevice(nsCString device_name, nsCString device_id, bool scary, bool placeholder);

  async ReplyFailure();

  async ReplySuccess();

  async __delete__();

parent:

  async NumberOfCaptureDevices(CaptureEngine engine);

  async NumberOfCapabilities(CaptureEngine engine, nsCString deviceUniqueIdUTF8);

  async GetCaptureCapability(CaptureEngine engine, nsCString unique_idUTF8,

                             int capability_number);

  async GetCaptureDevice(CaptureEngine engine, int deviceIndex);

  async AllocateCapture(CaptureEngine engine, nsCString unique_idUTF8,

                        uint64_t windowID);

  async ReleaseCapture(CaptureEngine engine, int captureId);

  async StartCapture(CaptureEngine engine, int captureId,

                     VideoCaptureCapability capability);

  async FocusOnSelectedSource(CaptureEngine engine, int captureId);

  async StopCapture(CaptureEngine engine, int captureId);

  // transfers frame back

  async ReleaseFrame(Shmem s);

  // setup camera engine

  async EnsureInitialized(CaptureEngine engine);

};

} // namespace camera

} // namespace mozilla