| 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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| 2 | /* |
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| 3 | * Controls header for NPCM video driver |
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| 4 | * |
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| 5 | * Copyright (C) 2022 Nuvoton Technologies |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef _UAPI_LINUX_NPCM_VIDEO_H |
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| 9 | #define _UAPI_LINUX_NPCM_VIDEO_H |
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| 10 | |
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| 11 | #include <linux/v4l2-controls.h> |
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| 12 | |
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| 13 | /* |
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| 14 | * Check Documentation/userspace-api/media/drivers/npcm-video.rst for control |
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| 15 | * details. |
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| 16 | */ |
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| 17 | |
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| 18 | /* |
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| 19 | * This control is meant to set the mode of NPCM Video Capture/Differentiation |
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| 20 | * (VCD) engine. |
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| 21 | * |
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| 22 | * The VCD engine supports two modes: |
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| 23 | * COMPLETE - Capture the next complete frame into memory. |
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| 24 | * DIFF - Compare the incoming frame with the frame stored in memory, and |
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| 25 | * updates the differentiated frame in memory. |
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| 26 | */ |
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| 27 | #define V4L2_CID_NPCM_CAPTURE_MODE (V4L2_CID_USER_NPCM_BASE + 0) |
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| 28 | |
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| 29 | enum v4l2_npcm_capture_mode { |
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| 30 | V4L2_NPCM_CAPTURE_MODE_COMPLETE = 0, /* COMPLETE mode */ |
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| 31 | V4L2_NPCM_CAPTURE_MODE_DIFF = 1, /* DIFF mode */ |
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| 32 | }; |
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| 33 | |
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| 34 | /* |
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| 35 | * This control is meant to get the count of compressed HEXTILE rectangles which |
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| 36 | * is relevant to the number of differentiated frames if VCD is in DIFF mode. |
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| 37 | * And the count will always be 1 if VCD is in COMPLETE mode. |
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| 38 | */ |
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| 39 | #define V4L2_CID_NPCM_RECT_COUNT (V4L2_CID_USER_NPCM_BASE + 1) |
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| 40 | |
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| 41 | #endif /* _UAPI_LINUX_NPCM_VIDEO_H */ |
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| 42 | |
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