Revert of media: add video capture device for ARC++ camera HAL v3

media/capture/video/chromeos/mojo/arc_camera3.mojom

-// Copyright 2016 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.
-
-module arc.mojom;
-
-import "arc_camera3_metadata.mojom";
-
-[Extensible]
-enum HalPixelFormat {
-  HAL_PIXEL_FORMAT_RGBA_8888 = 0x1,
-  HAL_PIXEL_FORMAT_RGBX_8888 = 0x2,
-  HAL_PIXEL_FORMAT_BGRA_8888 = 0x5,
-  HAL_PIXEL_FORMAT_YCrCb_420_SP = 0x11,
-  HAL_PIXEL_FORMAT_YCbCr_422_I = 0x14,
-  HAL_PIXEL_FORMAT_BLOB = 0x21,
-  HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED = 0x22,
-  HAL_PIXEL_FORMAT_YCbCr_420_888 = 0x23,
-  HAL_PIXEL_FORMAT_YV12 = 0x32315659,
-};
-
-// The following enums are from Android's camera HAL v3 API header
-// (https://goo.gl/jciSjC).
-
-enum CameraFacing {
-  CAMERA_FACING_BACK = 0,
-  CAMERA_FACING_FRONT = 1,
-  CAMERA_FACING_EXTERNAL = 2,
-};
-
-enum Camera3StreamType {
-  CAMERA3_STREAM_OUTPUT = 0,
-  CAMERA3_STREAM_INPUT = 1,
-  CAMERA3_STREAM_BIDIRECTIONAL = 2,
-  CAMERA3_NUM_STREAM_TYPES,
-};
-
-enum Camera3StreamRotation {
-  CAMERA3_STREAM_ROTATION_0 = 0,
-  CAMERA3_STREAM_ROTATION_90 = 1,
-  CAMERA3_STREAM_ROTATION_180 = 2,
-  CAMERA3_STREAM_ROTATION_270 = 3,
-};
-
-enum Camera3StreamConfigurationMode {
-  CAMERA3_STREAM_CONFIGURATION_NORMAL_MODE = 0,
-  CAMERA3_STREAM_CONFIGURATION_CONSTRAINED_HIGH_SPEED_MODE =1,
-};
-
-enum Camera3RequestTemplate {
-  CAMERA3_TEMPLATE_PREVIEW = 1,
-  CAMERA3_TEMPLATE_STILL_CAPTURE = 2,
-  CAMERA3_TEMPLATE_VIDEO_RECORD = 3,
-  CAMERA3_TEMPLATE_VIDEO_SNAPSHOT = 4,
-  CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG = 5,
-  CAMERA3_TEMPLATE_MANUAL = 6,
-  CAMERA3_TEMPLATE_COUNT,
-};
-
-enum Camera3BufferStatus {
-  CAMERA3_BUFFER_STATUS_OK = 0,
-  CAMERA3_BUFFER_STATUS_ERROR = 1,
-};
-
-enum Camera3MsgType {
-  CAMERA3_MSG_ERROR = 1,
-  CAMERA3_MSG_SHUTTER = 2,
-  CAMERA3_NUM_MESSAGES,
-};
-
-struct Camera3Stream {
-  uint64 id;
-  Camera3StreamType stream_type;
-  uint32 width;
-  uint32 height;
-  HalPixelFormat format;
-  uint32 usage;
-  uint32 max_buffers;
-  uint32 data_space;
-  Camera3StreamRotation rotation;
-};
-
-struct Camera3StreamConfiguration {
-  array<Camera3Stream> streams;
-  Camera3StreamConfigurationMode operation_mode;
-};
-
-struct Camera3StreamBuffer {
-  uint64 stream_id;
-  uint64 buffer_id;
-  Camera3BufferStatus status;
-  handle? acquire_fence;
-  handle? release_fence;
-};
-
-struct Camera3CaptureRequest {
-  uint32 frame_number;
-  CameraMetadata settings;
-  Camera3StreamBuffer? input_buffer;
-  array<Camera3StreamBuffer> output_buffers;
-};
-
-// Camera3DeviceOps is mostly a translation of the camera3_device_ops_t API from
-// Android camera HAL v3, with the additional RegisterBuffer() function to pass
-// buffer handles across processes.  This is the interface to interact with a
-// camera device in the camera HAL.
-//
-// The work flow of the Camera3DeviceOps is:
-//
-//   1. Call Initialize() to register the Camera3CallbackOps interface with the
-//      camera HAL.
-//
-//   2. Call ConfigureStreams() to negotiate the set of usable video streams
-//      with the camera HAL.
-//
-//   3. After the video streams are successfully configured, call
-//      ConstructDefaultRequestSettings() to get the capture settings for each
-//      stream.  The capture settings of a stream will be associated with the
-//      capture requests of the stream.
-//
-//   4. Start the capture loop. The capture loop is composed of a series of
-//      capture requests and results.
-//
-//      For each capture request:
-//        a. Call RegisterBuffer() for each buffer associated with the request
-//           to register the buffers which will later be filled by the camera
-//           HAL with capture result.  For example, the client may register one
-//           small buffer for the low-resolution preview stream and one large
-//           buffer for the high-resolution still capture stream.
-//        b. Call ProcessCaptureRequest() to request capturing one frame.  A
-//           request may contain multiple streams and the camera HAL would fill
-//           the buffers of each streams per requirements specified in
-//           ConfigureStreams() and RegisterBuffer().  For example, the camera
-//           HAL may fill a frame to a still capture buffer with the native
-//           capture resolution, and down-scale the same frame to a lower
-//           resolution for the preview buffer.
-//      The client may continue with RegisterBuffer() -> ProcessCaptureRequest()
-//      up to the pipe-line depth configured in ConfigureStreams().
-//
-//      When the camera HAL is done with a capture request, the capture result
-//      is sent back to the client through the callbacks in Camera3CallbackOps.
-//
-//      For each capture result:
-//        a. The camera HAL notifies the client through Notify() of the shutter
-//           time of the captured frame.  If an error happens while capturing a
-//           frame or filling a buffer, the camera HAL notifies the client
-//           through Notify() of the error.
-//        b. The camera HAL returns the capture result with various result
-//           metadata and the filled buffers to the client in
-//           ProcessCaptureResult().  The result metadata may be sent partially
-//           in multiple stages, and the client must wait until all the partial
-//           metadata are received before handing the capture result to upper
-//           layer.
-//
-//    5. Dump() can be used to dump various information of the camera HAL for
-//       debug purpose.
-//
-//    6. Flush() tells the camera HAL to finish processing or discard the
-//       current on-going capture requests and return to the state where
-//       ConfigureStreams() can be called again to set up new streams.
-//
-//    7. Close() closes the camera device.
-
-interface Camera3DeviceOps {
-  // Initialize() is called once after the camera device is opened to register
-  // the Camera3CallbackOps handle.
-  Initialize@0(Camera3CallbackOps callback_ops) => (int32 result);
-
-  // ConfigureStreams() is called every time the client needs to set up new set
-  // of streams.
-  ConfigureStreams@1(Camera3StreamConfiguration config) =>
-      (int32 result, Camera3StreamConfiguration? updated_config);
-
-  // ConstructDefaultRequestSettings() is called to get the request settings for
-  // common use cases, e.g. preview, still capture, video recording...etc.
-  ConstructDefaultRequestSettings@2(Camera3RequestTemplate type) =>
-      (CameraMetadata? settings);
-
-  // ProcessCaptureRequest() is the core method and is called for every captured
-  // frame to provide the camera HAL with the capture settings and the
-  // associated buffers to fill.
-  ProcessCaptureRequest@3(Camera3CaptureRequest request) => (int32 result);
-
-  // Dump() is called to gather various states and information about the camera
-  // HAL; it is mainly for debug purpose.
-  Dump@4(handle fd);
-
-  // Flush() is called to clear out any in-progress captures and return the
-  // camera HAL to idle state.
-  Flush@5() => (int32 result);
-
-  // The type of buffers the ARC++ camera service currently supports.
-  // GRALLOC is for the platform-specific gralloc buffer allocated by Android.
-  // SHM is for the shared memory buffer allocated by Chrome.
-  enum BufferType {
-    GRALLOC = 0,  // gralloc buffer. Needs to be imported through GBM.
-    SHM = 1,      // shared memory buffer. Can be mmapped directly.
-    // Add DMABUF when needed.
-  };
-
-  // RegisterBuffer() is called to register a buffer with the camera HAL.  The
-  // registered buffer can then be specified in ProcessCaptureRequest() for the
-  // camera HAL to fill captured frame.  RegisterBuffer() is not part of the
-  // Android camera HAL v3 API; it is added for ARC++ camera service to pass
-  // buffer handles across different processes.
-  RegisterBuffer@6(uint64 buffer_id, BufferType type, array<handle> fds,
-                   uint32 drm_format, HalPixelFormat hal_pixel_format,
-                   uint32 width, uint32 height, array<uint32> strides,
-                   array<uint32> offsets) =>
-      (int32 result);
-
-  // Close() is called to close the camera device.
-  Close@7() => (int32 result);
-};
-
-struct Camera3CaptureResult {
-  uint32 frame_number;
-  CameraMetadata result;
-  array<Camera3StreamBuffer>? output_buffers;
-  Camera3StreamBuffer? input_buffer;
-  uint32 partial_result;
-};
-
-enum Camera3ErrorMsgCode {
-  CAMERA3_MSG_ERROR_DEVICE = 1,
-  CAMERA3_MSG_ERROR_REQUEST = 2,
-  CAMERA3_MSG_ERROR_RESULT = 3,
-  CAMERA3_MSG_ERROR_BUFFER = 4,
-  CAMERA3_MSG_NUM_ERRORS,
-};
-
-struct Camera3ErrorMsg {
-  uint32 frame_number;
-  uint64 error_stream_id;
-  Camera3ErrorMsgCode error_code;
-};
-
-struct Camera3ShutterMsg {
-  uint32 frame_number;
-  uint64 timestamp;
-};
-
-union Camera3NotifyMsgMessage {
-  Camera3ErrorMsg error;
-  Camera3ShutterMsg shutter;
-  array<uint8> generic;
-};
-
-struct Camera3NotifyMsg {
-  Camera3MsgType type;
-  Camera3NotifyMsgMessage message;
-};
-
-// Camera3CallbackOps is a translation of the camera3_callback_ops_t API
-// in Android camera HAL v3.  For the work flow of the functions in
-// Camera3CallbackOps, see the comments about Camera3DeviceOps above.
-interface Camera3CallbackOps {
-  // ProcessCaptureResult() is called by the camera HAL to send result metadata
-  // and filled buffer to the client.
-  ProcessCaptureResult@0(Camera3CaptureResult result);
-
-  // Notify() is called by the camera HAL to notify the client of the start of
-  // each capture, and of errors encountered.
-  Notify@1(Camera3NotifyMsg msg);
-};
-
-struct CameraInfo {
-  CameraFacing facing;
-  int32 orientation;
-  uint32 device_version;
-  CameraMetadata static_camera_characteristics;
-  // resource cost is not valid in CAMERA_MODULE_API_VERSION_2_3 or lower.
-  // conflicting_devices is not valid in CAMERA_MODULE_API_VERSION_2_3 or lower.
-  // conflicting_devices_length is not valid in CAMERA_MODULE_API_VERSION_2_3 or
-  // lower.
-};
-
-// CameraModule is a translation of the camera_module_t API
-// (https://goo.gl/8Hf8S8).  CameraModule is the interface to interact with a
-// camera HAL to query device info and open camera devices.
-interface CameraModule {
-  // Opens the camera device specified by |camera_id|.  On success, the camera
-  // device is accessible through the |device_ops| returned.
-  OpenDevice@0(int32 camera_id, Camera3DeviceOps& device_ops_request)
-      => (int32 result);
-
-  // Gets the number of cameras currently present on the system.
-  GetNumberOfCameras@1() => (int32 result);
-
-  // Gets various info about the camera specified by |camera_id|.
-  GetCameraInfo@2(int32 camera_id) => (int32 result, CameraInfo? camera_info);
-
-  // Registers the CameraModuleCallbacks interface with the camera HAL.
-  SetCallbacks@3(CameraModuleCallbacks callbacks) => (int32 result);
-};
-
-enum CameraDeviceStatus {
-  CAMERA_DEVICE_STATUS_NOT_PRESENT = 0,
-  CAMERA_DEVICE_STATUS_PRESENT = 1,
-  CAMERA_DEVICE_STATUS_ENUMERATING = 2,
-};
-
-// CameraModuleCallbacks is a translation of the camera_module_callbacks_t API
-// (https://goo.gl/8Hf8S8).  CameraModuleCallbacks is used by the camera HAL to
-// inform the client of the various status change of a camera.
-interface CameraModuleCallbacks {
-  // CameraDeviceStatusChange() is called by the camera HAL to notify the client
-  // of the new status of the camera device specified by |camera_id|.
-  CameraDeviceStatusChange@0(int32 camera_id, CameraDeviceStatus new_status);
-};