+++ /dev/null
-/*********************************************************************
-* Software License Agreement (BSD License)
-*
-* Copyright (C) 2010-2012 Ken Tossell
-* All rights reserved.
-*
-* Redistribution and use in source and binary forms, with or without
-* modification, are permitted provided that the following conditions
-* are met:
-*
-* * Redistributions of source code must retain the above copyright
-* notice, this list of conditions and the following disclaimer.
-* * Redistributions in binary form must reproduce the above
-* copyright notice, this list of conditions and the following
-* disclaimer in the documentation and/or other materials provided
-* with the distribution.
-* * Neither the name of the author nor other contributors may be
-* used to endorse or promote products derived from this software
-* without specific prior written permission.
-*
-* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-* POSSIBILITY OF SUCH DAMAGE.
-*********************************************************************/
-/**
- * @defgroup ctrl Video capture and processing control
- */
-
-#include "libuvc/libuvc.h"
-#include "libuvc/libuvc_internal.h"
-
-static const int REQ_TYPE_SET = 0x21;
-static const int REQ_TYPE_GET = 0xa1;
-
-uvc_error_t uvc_get_power_mode(uvc_device_handle_t *devh, enum uvc_device_power_mode *mode, enum uvc_req_code req_code) {
- uint8_t mode_char;
- uvc_error_t ret;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, req_code,
- UVC_VC_VIDEO_POWER_MODE_CONTROL << 8,
- 0,
- &mode_char,
- sizeof(mode_char),
- 0);
-
- if (ret == 1) {
- *mode = mode_char;
- return UVC_SUCCESS;
- } else {
- return ret;
- }
-}
-
-uvc_error_t uvc_set_power_mode(uvc_device_handle_t *devh, enum uvc_device_power_mode mode) {
- uint8_t mode_char = mode;
- uvc_error_t ret;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_SET, UVC_SET_CUR,
- UVC_VC_VIDEO_POWER_MODE_CONTROL << 8,
- 0,
- &mode_char,
- sizeof(mode_char),
- 0);
-
- if (ret == 1)
- return UVC_SUCCESS;
- else
- return ret;
-}
-
-/***** CAMERA TERMINAL CONTROLS *****/
-
-uvc_error_t uvc_get_ae_mode(uvc_device_handle_t *devh, int *mode, enum uvc_req_code req_code) {
- uint8_t data[1];
- uvc_error_t ret;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, req_code,
- UVC_CT_AE_MODE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data)) {
- *mode = data[0];
- return UVC_SUCCESS;
- } else {
- return ret;
- }
-}
-
-uvc_error_t uvc_set_ae_mode(uvc_device_handle_t *devh, int mode) {
- uint8_t data[1];
- uvc_error_t ret;
-
- data[0] = mode;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_SET, UVC_SET_CUR,
- UVC_CT_AE_MODE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data))
- return UVC_SUCCESS;
- else
- return ret;
-}
-
-uvc_error_t uvc_get_ae_priority(uvc_device_handle_t *devh, uint8_t *priority, enum uvc_req_code req_code) {
- uint8_t data[1];
- uvc_error_t ret;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, req_code,
- UVC_CT_AE_PRIORITY_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data)) {
- *priority = data[0];
- return UVC_SUCCESS;
- } else {
- return ret;
- }
-}
-
-uvc_error_t uvc_set_ae_priority(uvc_device_handle_t *devh, uint8_t priority) {
- uint8_t data[1];
- uvc_error_t ret;
-
- data[0] = priority;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_SET, UVC_SET_CUR,
- UVC_CT_AE_PRIORITY_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data))
- return UVC_SUCCESS;
- else
- return ret;
-}
-
-uvc_error_t uvc_get_exposure_abs(uvc_device_handle_t *devh, int *time, enum uvc_req_code req_code) {
- uint8_t data[4];
- uvc_error_t ret;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, req_code,
- UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data)) {
- *time = DW_TO_INT(data);
- return UVC_SUCCESS;
- } else {
- return ret;
- }
-}
-
-uvc_error_t uvc_set_exposure_abs(uvc_device_handle_t *devh, int time) {
- uint8_t data[4];
- uvc_error_t ret;
-
- INT_TO_DW(time, data);
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_SET, UVC_SET_CUR,
- UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data))
- return UVC_SUCCESS;
- else
- return ret;
-}
-
-uvc_error_t uvc_get_exposure_rel(uvc_device_handle_t *devh, int *step, enum uvc_req_code req_code) {
- uint8_t data[1];
- uvc_error_t ret;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, req_code,
- UVC_CT_EXPOSURE_TIME_RELATIVE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data)) {
- *step = data[0];
- return UVC_SUCCESS;
- } else {
- return ret;
- }
-}
-
-uvc_error_t uvc_set_exposure_rel(uvc_device_handle_t *devh, int step) {
- uint8_t data[1];
- uvc_error_t ret;
-
- data[0] = step;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_SET, UVC_SET_CUR,
- UVC_CT_EXPOSURE_TIME_RELATIVE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data))
- return UVC_SUCCESS;
- else
- return ret;
-}
-
-uvc_error_t uvc_get_scanning_mode(uvc_device_handle_t *devh, int *step, enum uvc_req_code req_code) {
- uint8_t data[1];
- uvc_error_t ret;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, req_code,
- UVC_CT_SCANNING_MODE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data)) {
- *step = data[0];
- return UVC_SUCCESS;
- } else {
- return ret;
- }
-}
-
-uvc_error_t uvc_set_scanning_mode(uvc_device_handle_t *devh, int mode) {
- uint8_t data[1];
- uvc_error_t ret;
-
- data[0] = mode;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_SET, UVC_SET_CUR,
- UVC_CT_SCANNING_MODE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data))
- return UVC_SUCCESS;
- else
- return ret;
-}
-
-uvc_error_t uvc_get_focus_abs(uvc_device_handle_t *devh, short *focus, enum uvc_req_code req_code) {
- uint8_t data[2];
- uvc_error_t ret;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, req_code,
- UVC_CT_FOCUS_ABSOLUTE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data)) {
- *focus = SW_TO_SHORT(data);
- return UVC_SUCCESS;
- } else {
- return ret;
- }
-}
-
-uvc_error_t uvc_set_focus_abs(uvc_device_handle_t *devh, short focus) {
- uint8_t data[2];
- uvc_error_t ret;
-
- SHORT_TO_SW(focus, data);
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_SET, UVC_SET_CUR,
- UVC_CT_FOCUS_ABSOLUTE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data))
- return UVC_SUCCESS;
- else
- return ret;
-}
-
-/** @todo focus_rel, focus_auto_control */
-/** @todo iris_abs_ctrl, iris_rel_ctrl */
-/** @todo zoom_abs, zoom_rel */
-
-uvc_error_t uvc_get_pantilt_abs(uvc_device_handle_t *devh, int *pan, int *tilt, enum uvc_req_code req_code) {
- uint8_t data[8];
- uvc_error_t ret;
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, req_code,
- UVC_CT_PANTILT_ABSOLUTE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data)) {
- *pan = DW_TO_INT(data);
- *tilt = DW_TO_INT(data + 4);
- return UVC_SUCCESS;
- } else {
- return ret;
- }
-}
-
-uvc_error_t uvc_set_pantilt_abs(uvc_device_handle_t *devh, int pan, int tilt) {
- uint8_t data[8];
- uvc_error_t ret;
-
- INT_TO_DW(pan, data);
- INT_TO_DW(tilt, data + 4);
-
- ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_SET, UVC_SET_CUR,
- UVC_CT_PANTILT_ABSOLUTE_CONTROL << 8,
- 1 << 8,
- data,
- sizeof(data),
- 0);
-
- if (ret == sizeof(data))
- return UVC_SUCCESS;
- else
- return ret;
-}
-
-/** @todo pantilt_rel */
-
-/** @todo roll_abs, roll_rel */
-
-/** @todo privacy */
-
-/***** SELECTOR UNIT CONTROLS *****/
-
-/** @todo input_select */
-
-/***** PROCESSING UNIT CONTROLS *****/
-
-/***** GENERIC CONTROLS *****/
-/**
- * @brief Get the length of a control on a terminal or unit.
- *
- * @param devh UVC device handle
- * @param unit Unit or Terminal ID; obtain this from the uvc_extension_unit_t describing the extension unit
- * @param ctrl Vendor-specific control number to query
- * @return On success, the length of the control as reported by the device. Otherwise,
- * a uvc_error_t error describing the error encountered.
- */
-int uvc_get_ctrl_len(uvc_device_handle_t *devh, uint8_t unit, uint8_t ctrl) {
- unsigned char buf[2];
-
- int ret = libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, UVC_GET_LEN,
- ctrl << 8,
- unit << 8,
- buf,
- 2,
- 0 /* timeout */);
-
- if (ret < 0)
- return ret;
- else
- return (unsigned short)SW_TO_SHORT(buf);
-}
-
-/**
- * @brief Perform a GET_* request from an extension unit.
- *
- * @param devh UVC device handle
- * @param unit Unit ID; obtain this from the uvc_extension_unit_t describing the extension unit
- * @param ctrl Control number to query
- * @param data Data buffer to be filled by the device
- * @param len Size of data buffer
- * @param req_code GET_* request to execute
- * @return On success, the number of bytes actually transferred. Otherwise,
- * a uvc_error_t error describing the error encountered.
- */
-int uvc_get_ctrl(uvc_device_handle_t *devh, uint8_t unit, uint8_t ctrl, void *data, int len, enum uvc_req_code req_code) {
- return libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_GET, req_code,
- ctrl << 8,
- unit << 8,
- data,
- len,
- 0 /* timeout */);
-}
-
-/**
- * @brief Perform a SET_CUR request to a terminal or unit.
- *
- * @param devh UVC device handle
- * @param unit Unit or Terminal ID
- * @param ctrl Control number to set
- * @param data Data buffer to be sent to the device
- * @param len Size of data buffer
- * @return On success, the number of bytes actually transferred. Otherwise,
- * a uvc_error_t error describing the error encountered.
- */
-int uvc_set_ctrl(uvc_device_handle_t *devh, uint8_t unit, uint8_t ctrl, void *data, int len) {
- return libusb_control_transfer(
- devh->usb_devh,
- REQ_TYPE_SET, UVC_SET_CUR,
- ctrl << 8,
- unit << 8,
- data,
- len,
- 0 /* timeout */);
-}
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