C++ (Cpp) uvc_get_frame_descの例

コード例 #1

ファイル: UVCPreview.cpp プロジェクト: ozone999/usbcamera

int UVCPreview::prepare_preview(uvc_stream_ctrl_t *ctrl) {
	uvc_error_t result;

	ENTER();
	result = uvc_get_stream_ctrl_format_size_fps(mDeviceHandle, ctrl,
		!requestMode ? UVC_FRAME_FORMAT_YUYV : UVC_FRAME_FORMAT_MJPEG,
		requestWidth, requestHeight, 1, 30
	);
	LOGE("[EYEDEA] result_1:[%d]", result);
	if (LIKELY(!result)) {
#if LOCAL_DEBUG
		uvc_print_stream_ctrl(ctrl, stderr);
#endif
		uvc_frame_desc_t *frame_desc;
		result = uvc_get_frame_desc(mDeviceHandle, ctrl, &frame_desc);
		LOGE("[EYEDEA] result_2:[%d]", result);
		if (LIKELY(!result)) {
			frameWidth = frame_desc->wWidth;
			frameHeight = frame_desc->wHeight;
			LOGI("frameSize=(%d,%d)@%s", frameWidth, frameHeight, (!requestMode ? "YUYV" : "MJPEG"));
			pthread_mutex_lock(&preview_mutex);
			if (LIKELY(mPreviewWindow)) {
				ANativeWindow_setBuffersGeometry(mPreviewWindow,
					frameWidth, frameHeight, previewFormat);
			}
			pthread_mutex_unlock(&preview_mutex);
		} else {
			frameWidth = requestWidth;
			frameHeight = requestHeight;
		}
		frameMode = requestMode;
		frameBytes = frameWidth * frameHeight * (!requestMode ? 2 : 4);
		previewBytes = frameWidth * frameHeight * PREVIEW_PIXEL_BYTES;
	} else {
		LOGE("could not negotiate with camera:err=%d", result);
	}
	RETURN(result, int);
}

コード例 #2

ファイル: UVCPreview.cpp プロジェクト: apollo-time/UVCCamera

int UVCPreview::prepare_preview(uvc_stream_ctrl_t *ctrl) {
	uvc_error_t result;

	ENTER();
	result = uvc_get_stream_ctrl_format_size(mDeviceHandle, ctrl,
		UVC_FRAME_FORMAT_YUYV,
		requestWidth, requestHeight, requestFps
	);
	if (LIKELY(!result)) {
#if LOCAL_DEBUG
		uvc_print_stream_ctrl(ctrl, stderr);
#endif
		uvc_frame_desc_t *frame_desc;
		result = uvc_get_frame_desc(mDeviceHandle, ctrl, &frame_desc);
		if (LIKELY(!result)) {
			frameWidth = frame_desc->wWidth;
			frameHeight = frame_desc->wHeight;
#if LOCAL_DEBUG
			LOGI("frameSize=(%d,%d)", frameWidth, frameHeight);
#endif
			pthread_mutex_lock(&preview_mutex);
			if (LIKELY(mPreviewWindow)) {
				ANativeWindow_setBuffersGeometry(mPreviewWindow,
					frameWidth, frameHeight, previewFormat);
			}
			pthread_mutex_unlock(&preview_mutex);
		} else {
			frameWidth = requestWidth;
			frameHeight = requestHeight;
		}
		frameBytes = frameWidth * frameHeight * 2;	// YUYV
		previewBytes = frameWidth * frameHeight * PREVIEW_PIXEL_BYTES;
	} else {
		LOGE("could not negotiate with camera:err=%d", result);
	}
	RETURN(result, int);
}