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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_CAMERA_CAMERA_CAPTURE_H
#define ANDROID_CAMERA_CAMERA_CAPTURE_H
/*
* Contains declarations for video capturing API that is used by the camera
* emulator.
*/
#include "camera-common.h"
/* Initializes camera device descriptor, and connects to the camera device.
* Param:
* name - On Linux contains name of the device to be used to capture video.
* On Windows contains name to assign to the capturing window. This parameter
* can be NULL, in which case '/dev/video0' will be used as device name on
* Linux, or 'AndroidEmulatorVC' on Windows.
* inp_channel - On Linux defines input channel to use when communicating with
* the camera driver. On Windows contains an index (up to 10) of the driver
* to use to communicate with the camera device.
* pixel_format - Defines pixel format in which the client of the camera API
* expects the frames. Note that is this format doesn't match pixel formats
* supported by the camera device, the camera API will provide a conversion.
* If such conversion is not available, this routine will fail.
* Return:
* Initialized camera device descriptor on success, or NULL on failure.
*/
extern CameraDevice* camera_device_open(const char* name,
int inp_channel,
uint32_t pixel_format);
/* Starts capturing frames from the camera device.
* Param:
* cd - Camera descriptor representing a camera device opened in
* camera_device_open routine.
* Return:
* 0 on success, or non-zero value on failure.
*/
extern int camera_device_start_capturing(CameraDevice* cd);
/* Stops capturing frames from the camera device.
* Param:
* cd - Camera descriptor representing a camera device opened in
* camera_device_open routine.
* Return:
* 0 on success, or non-zero value on failure.
*/
extern int camera_device_stop_capturing(CameraDevice* cd);
/* Captures a frame from the camera device.
* Param:
* cd - Camera descriptor representing a camera device opened in
* camera_device_open routine.
* buffer - Address of the buffer where to read the frame. Note that the buffer
* must be large enough to contain the entire frame. Also note that due to
* possible format conversion, required buffer size may differ from the
* framebuffer size as reported by framebuffer_size int the CameraDevice
* structure.
* Return:
* 0 on success, or non-zero value on failure.
*/
extern int camera_device_read_frame(CameraDevice* cd, uint8_t* buffer);
/* Closes camera device, opened in camera_device_open routine.
* Param:
* cd - Camera descriptor representing a camera device opened in
* camera_device_open routine.
*/
extern void camera_device_close(CameraDevice* cd);
#endif /* ANDROID_CAMERA_CAMERA_CAPTURE_H */
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