Quelle  uvc.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-or-later

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/usb/uvc.h>
#include <linux/videodev2.h>

/* ------------------------------------------------------------------------
 * Video formats
 */

static const struct uvc_format_desc uvc_fmts[] = {
 {
  .guid  = UVC_GUID_FORMAT_YUY2,
  .fcc  = V4L2_PIX_FMT_YUYV,
 },
 {
  .guid  = UVC_GUID_FORMAT_YUY2_ISIGHT,
  .fcc  = V4L2_PIX_FMT_YUYV,
 },
 {
  .guid  = UVC_GUID_FORMAT_NV12,
  .fcc  = V4L2_PIX_FMT_NV12,
 },
 {
  .guid  = UVC_GUID_FORMAT_MJPEG,
  .fcc  = V4L2_PIX_FMT_MJPEG,
 },
 {
  .guid  = UVC_GUID_FORMAT_YV12,
  .fcc  = V4L2_PIX_FMT_YVU420,
 },
 {
  .guid  = UVC_GUID_FORMAT_I420,
  .fcc  = V4L2_PIX_FMT_YUV420,
 },
 {
  .guid  = UVC_GUID_FORMAT_M420,
  .fcc  = V4L2_PIX_FMT_M420,
 },
 {
  .guid  = UVC_GUID_FORMAT_UYVY,
  .fcc  = V4L2_PIX_FMT_UYVY,
 },
 {
  .guid  = UVC_GUID_FORMAT_Y800,
  .fcc  = V4L2_PIX_FMT_GREY,
 },
 {
  .guid  = UVC_GUID_FORMAT_Y8,
  .fcc  = V4L2_PIX_FMT_GREY,
 },
 {
  .guid  = UVC_GUID_FORMAT_D3DFMT_L8,
  .fcc  = V4L2_PIX_FMT_GREY,
 },
 {
  .guid  = UVC_GUID_FORMAT_KSMEDIA_L8_IR,
  .fcc  = V4L2_PIX_FMT_GREY,
 },
 {
  .guid  = UVC_GUID_FORMAT_Y10,
  .fcc  = V4L2_PIX_FMT_Y10,
 },
 {
  .guid  = UVC_GUID_FORMAT_Y12,
  .fcc  = V4L2_PIX_FMT_Y12,
 },
 {
  .guid  = UVC_GUID_FORMAT_Y16,
  .fcc  = V4L2_PIX_FMT_Y16,
 },
 {
  .guid  = UVC_GUID_FORMAT_BY8,
  .fcc  = V4L2_PIX_FMT_SBGGR8,
 },
 {
  .guid  = UVC_GUID_FORMAT_BA81,
  .fcc  = V4L2_PIX_FMT_SBGGR8,
 },
 {
  .guid  = UVC_GUID_FORMAT_GBRG,
  .fcc  = V4L2_PIX_FMT_SGBRG8,
 },
 {
  .guid  = UVC_GUID_FORMAT_GRBG,
  .fcc  = V4L2_PIX_FMT_SGRBG8,
 },
 {
  .guid  = UVC_GUID_FORMAT_RGGB,
  .fcc  = V4L2_PIX_FMT_SRGGB8,
 },
 {
  .guid  = UVC_GUID_FORMAT_RGBP,
  .fcc  = V4L2_PIX_FMT_RGB565,
 },
 {
  .guid  = UVC_GUID_FORMAT_D3DFMT_R5G6B5,
  .fcc  = V4L2_PIX_FMT_RGB565,
 },
 {
  .guid  = UVC_GUID_FORMAT_BGR3,
  .fcc  = V4L2_PIX_FMT_BGR24,
 },
 {
  .guid  = UVC_GUID_FORMAT_BGR4,
  .fcc  = V4L2_PIX_FMT_XBGR32,
 },
 {
  .guid  = UVC_GUID_FORMAT_H264,
  .fcc  = V4L2_PIX_FMT_H264,
 },
 {
  .guid  = UVC_GUID_FORMAT_H265,
  .fcc  = V4L2_PIX_FMT_HEVC,
 },
 {
  .guid  = UVC_GUID_FORMAT_Y8I,
  .fcc  = V4L2_PIX_FMT_Y8I,
 },
 {
  .guid  = UVC_GUID_FORMAT_Y12I,
  .fcc  = V4L2_PIX_FMT_Y12I,
 },
 {
  .guid  = UVC_GUID_FORMAT_Y16I,
  .fcc  = V4L2_PIX_FMT_Y16I,
 },
 {
  .guid  = UVC_GUID_FORMAT_Z16,
  .fcc  = V4L2_PIX_FMT_Z16,
 },
 {
  .guid  = UVC_GUID_FORMAT_RW10,
  .fcc  = V4L2_PIX_FMT_SRGGB10P,
 },
 {
  .guid  = UVC_GUID_FORMAT_BG16,
  .fcc  = V4L2_PIX_FMT_SBGGR16,
 },
 {
  .guid  = UVC_GUID_FORMAT_GB16,
  .fcc  = V4L2_PIX_FMT_SGBRG16,
 },
 {
  .guid  = UVC_GUID_FORMAT_RG16,
  .fcc  = V4L2_PIX_FMT_SRGGB16,
 },
 {
  .guid  = UVC_GUID_FORMAT_GR16,
  .fcc  = V4L2_PIX_FMT_SGRBG16,
 },
 {
  .guid  = UVC_GUID_FORMAT_INVZ,
  .fcc  = V4L2_PIX_FMT_Z16,
 },
 {
  .guid  = UVC_GUID_FORMAT_INVI,
  .fcc  = V4L2_PIX_FMT_Y10,
 },
 {
  .guid  = UVC_GUID_FORMAT_INZI,
  .fcc  = V4L2_PIX_FMT_INZI,
 },
 {
  .guid  = UVC_GUID_FORMAT_CNF4,
  .fcc  = V4L2_PIX_FMT_CNF4,
 },
 {
  .guid  = UVC_GUID_FORMAT_HEVC,
  .fcc  = V4L2_PIX_FMT_HEVC,
 },
};

const struct uvc_format_desc *uvc_format_by_guid(const u8 guid[16])
{
 unsigned int len = ARRAY_SIZE(uvc_fmts);
 unsigned int i;

 for (i = 0; i < len; ++i) {
  if (memcmp(guid, uvc_fmts[i].guid, 16) == 0)
   return &uvc_fmts[i];
 }

 return NULL;
}
EXPORT_SYMBOL_GPL(uvc_format_by_guid);

MODULE_DESCRIPTION("USB Video Class common code");
MODULE_LICENSE("GPL");