npcm-video.h (1214B) - Raw
1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2 /* 3 * Controls header for NPCM video driver 4 * 5 * Copyright (C) 2022 Nuvoton Technologies 6 */ 7 8 #ifndef _LINUX_NPCM_VIDEO_H 9 #define _LINUX_NPCM_VIDEO_H 10 11 #include <linux/v4l2-controls.h> 12 13 /* 14 * Check Documentation/userspace-api/media/drivers/npcm-video.rst for control 15 * details. 16 */ 17 18 /* 19 * This control is meant to set the mode of NPCM Video Capture/Differentiation 20 * (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, and 25 * updates the differentiated frame in memory. 26 */ 27 #define V4L2_CID_NPCM_CAPTURE_MODE (V4L2_CID_USER_NPCM_BASE + 0) 28 29 enum 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 which 36 * 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 /* _LINUX_NPCM_VIDEO_H */