42 lines · c
1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */2/*3 * Controls header for NPCM video driver4 *5 * Copyright (C) 2022 Nuvoton Technologies6 */7 8#ifndef _UAPI_LINUX_NPCM_VIDEO_H9#define _UAPI_LINUX_NPCM_VIDEO_H10 11#include <linux/v4l2-controls.h>12 13/*14 * Check Documentation/userspace-api/media/drivers/npcm-video.rst for control15 * details.16 */17 18/*19 * This control is meant to set the mode of NPCM Video Capture/Differentiation20 * (VCD) engine.21 *22 * The VCD engine supports two modes:23 * COMPLETE - Capture the next complete frame into memory.24 * DIFF - Compare the incoming frame with the frame stored in memory, and25 * updates the differentiated frame in memory.26 */27#define V4L2_CID_NPCM_CAPTURE_MODE (V4L2_CID_USER_NPCM_BASE + 0)28 29enum v4l2_npcm_capture_mode {30 V4L2_NPCM_CAPTURE_MODE_COMPLETE = 0, /* COMPLETE mode */31 V4L2_NPCM_CAPTURE_MODE_DIFF = 1, /* DIFF mode */32};33 34/*35 * This control is meant to get the count of compressed HEXTILE rectangles which36 * is relevant to the number of differentiated frames if VCD is in DIFF mode.37 * And the count will always be 1 if VCD is in COMPLETE mode.38 */39#define V4L2_CID_NPCM_RECT_COUNT (V4L2_CID_USER_NPCM_BASE + 1)40 41#endif /* _UAPI_LINUX_NPCM_VIDEO_H */42