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This allows drivers to override standard resolutions, or use custom ones, without affecting other CSIs. Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
612 lines
23 KiB
C
612 lines
23 KiB
C
/*
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* Copyright (C) 2023-2024 OpenMV, LLC.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Any redistribution, use, or modification in source or binary form
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* is done solely for personal benefit and not for any commercial
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* purpose or for monetary gain. For commercial licensing options,
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* please contact openmv@openmv.io
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*
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* THIS SOFTWARE IS PROVIDED BY THE LICENSOR AND COPYRIGHT OWNER "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE LICENSOR OR COPYRIGHT
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* OWNER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* CMOS sensor interface abstraction layer.
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*/
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#ifndef __OMV_CSI_H__
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#define __OMV_CSI_H__
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#include <stdarg.h>
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#include "omv_i2c.h"
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#include "imlib.h"
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#include "framebuffer.h"
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#define OV2640_SLV_ADDR (0x60)
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#define OV5640_SLV_ADDR (0x78)
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#define OV7725_SLV_ADDR (0x42)
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#define MT9V0XX_SLV_ADDR (0xB8)
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#define MT9M114_SLV_ADDR (0x90)
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#define BOSON_SLV_ADDR (0xAE)
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#define LEPTON_SLV_ADDR (0x54)
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#define HM0XX0_SLV_ADDR (0x48)
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#define GC2145_SLV_ADDR (0x78)
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#define GENX320_SLV_ADDR (0x78)
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#define FROGEYE2020_SLV_ADDR (0x6E)
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#define PAG7920_SLV_ADDR (0x80)
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#define PAG7936_SLV_ADDR (0x80)
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#define PAG7936_SLV_ADDR_ALT (0x2A)
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#define PS5520_SLV_ADDR (0x90)
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// Chip ID Registers
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#define OV5640_CHIP_ID (0x300A)
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#define OV_CHIP_ID (0x0A)
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#define ON_CHIP_ID (0x00)
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#define HIMAX_CHIP_ID (0x0001)
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#define GC_CHIP_ID (0xF0)
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#define GENX320_CHIP_ID (0x0014)
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#define PIXART_CHIP_ID (0x0000)
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// Chip ID Values
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#define OV2640_ID (0x26)
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#define OV5640_ID (0x56)
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#define OV7670_ID (0x76)
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#define OV7690_ID (0x76)
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#define OV7725_ID (0x77)
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#define OV9650_ID (0x96)
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#define MT9V0X2_ID_V_1 (0x1311)
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#define MT9V0X2_ID_V_2 (0x1312)
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#define MT9V0X2_ID (0x1313)
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#define MT9V0X2_C_ID (0x1413)
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#define MT9V0X4_ID (0x1324)
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#define MT9V0X4_C_ID (0x1424)
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#define MT9M114_ID (0x2481)
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#define BOSON_ID (0xAE)
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#define BOSON_320_ID (0xAE32)
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#define BOSON_640_ID (0xAE64)
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#define LEPTON_ID (0x54)
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#define LEPTON_1_5 (0x5415)
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#define LEPTON_1_6 (0x5416)
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#define LEPTON_2_0 (0x5420)
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#define LEPTON_2_5 (0x5425)
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#define LEPTON_3_0 (0x5430)
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#define LEPTON_3_5 (0x5435)
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#define HM01B0_ID (0xB0)
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#define HM0360_ID (0x60)
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#define GC2145_ID (0x21)
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#define GENX320_ID_ES (0x30501C01)
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#define GENX320_ID_MP (0xB0602003)
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#define PAG7920_ID (0x7920)
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#define PAG7936_ID (0x7936)
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#define PS5520_ID (0x5520)
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#define PAJ6100_ID (0x6100)
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#define FROGEYE2020_ID (0x2020)
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#define SOFTCSI_ID (0x50F7)
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#define OMV_CSI_TIMEOUT_MS (3000)
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#define OMV_CSI_CLK_SOURCE_MCO (0U)
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#define OMV_CSI_CLK_SOURCE_TIM (1U)
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#define OMV_CSI_CLK_SOURCE_OSC (2U)
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#ifndef OMV_CSI_MAX_DEVICES
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#define OMV_CSI_MAX_DEVICES (1)
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#endif
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typedef enum {
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OMV_CSI_ACTIVE_LOW = 0,
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OMV_CSI_ACTIVE_HIGH = 1
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} omv_csi_polarity_t;
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typedef enum {
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OMV_CSI_CONFIG_INIT = (1 << 0),
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OMV_CSI_CONFIG_DEINIT = (1 << 1),
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OMV_CSI_CONFIG_FRAMESIZE = (1 << 2),
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OMV_CSI_CONFIG_PIXFORMAT = (1 << 3),
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OMV_CSI_CONFIG_WINDOWING = (1 << 4),
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} omv_csi_config_t;
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typedef enum {
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OMV_CSI_SDE_NORMAL,
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OMV_CSI_SDE_NEGATIVE,
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} omv_csi_sde_t;
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typedef enum {
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OMV_CSI_ATTR_CONTRAST=0,
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OMV_CSI_ATTR_BRIGHTNESS,
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OMV_CSI_ATTR_SATURATION,
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OMV_CSI_ATTR_GAINCEILING,
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} omv_csi_attr_t;
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typedef enum {
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OMV_CSI_GAINCEILING_2X,
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OMV_CSI_GAINCEILING_4X,
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OMV_CSI_GAINCEILING_8X,
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OMV_CSI_GAINCEILING_16X,
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OMV_CSI_GAINCEILING_32X,
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OMV_CSI_GAINCEILING_64X,
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OMV_CSI_GAINCEILING_128X,
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} omv_csi_gainceiling_t;
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typedef enum {
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OMV_CSI_FRAMESIZE_INVALID = 0,
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OMV_CSI_FRAMESIZE_CUSTOM,
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// C/SIF Resolutions
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OMV_CSI_FRAMESIZE_QQCIF, // 88x72
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OMV_CSI_FRAMESIZE_QCIF, // 176x144
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OMV_CSI_FRAMESIZE_CIF, // 352x288
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OMV_CSI_FRAMESIZE_QQSIF, // 88x60
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OMV_CSI_FRAMESIZE_QSIF, // 176x120
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OMV_CSI_FRAMESIZE_SIF, // 352x240
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// VGA Resolutions
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OMV_CSI_FRAMESIZE_QQQQVGA, // 40x30
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OMV_CSI_FRAMESIZE_QQQVGA, // 80x60
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OMV_CSI_FRAMESIZE_QQVGA, // 160x120
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OMV_CSI_FRAMESIZE_QVGA, // 320x240
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OMV_CSI_FRAMESIZE_VGA, // 640x480
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OMV_CSI_FRAMESIZE_HQQQQVGA, // 30x20
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OMV_CSI_FRAMESIZE_HQQQVGA, // 60x40
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OMV_CSI_FRAMESIZE_HQQVGA, // 120x80
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OMV_CSI_FRAMESIZE_HQVGA, // 240x160
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OMV_CSI_FRAMESIZE_HVGA, // 480x320
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// FFT Resolutions
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OMV_CSI_FRAMESIZE_64X32, // 64x32
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OMV_CSI_FRAMESIZE_64X64, // 64x64
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OMV_CSI_FRAMESIZE_128X64, // 128x64
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OMV_CSI_FRAMESIZE_128X128, // 128x128
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// Himax Resolutions
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OMV_CSI_FRAMESIZE_160X160, // 160x160
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OMV_CSI_FRAMESIZE_320X320, // 320x320
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// Other
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OMV_CSI_FRAMESIZE_LCD, // 128x160
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OMV_CSI_FRAMESIZE_QQVGA2, // 128x160
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OMV_CSI_FRAMESIZE_WVGA, // 720x480
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OMV_CSI_FRAMESIZE_WVGA2, // 752x480
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OMV_CSI_FRAMESIZE_SVGA, // 800x600
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OMV_CSI_FRAMESIZE_XGA, // 1024x768
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OMV_CSI_FRAMESIZE_WXGA, // 1280x768
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OMV_CSI_FRAMESIZE_SXGA, // 1280x1024
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OMV_CSI_FRAMESIZE_SXGAM, // 1280x960
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OMV_CSI_FRAMESIZE_UXGA, // 1600x1200
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OMV_CSI_FRAMESIZE_HD, // 1280x720
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OMV_CSI_FRAMESIZE_FHD, // 1920x1080
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OMV_CSI_FRAMESIZE_QHD, // 2560x1440
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OMV_CSI_FRAMESIZE_QXGA, // 2048x1536
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OMV_CSI_FRAMESIZE_WQXGA, // 2560x1600
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OMV_CSI_FRAMESIZE_WQXGA2, // 2592x1944
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OMV_CSI_FRAMESIZE_MAX,
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} omv_csi_framesize_t;
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typedef enum {
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OMV_CSI_FLAG_UPDATE_FB = (1 << 0),
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OMV_CSI_FLAG_NON_BLOCK = (1 << 1),
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OMV_CSI_FLAG_NO_POST = (1 << 2),
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OMV_CSI_FLAG_IOCTL_ABORT = (1 << 8),
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} omv_csi_flags_t;
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typedef enum {
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OMV_CSI_IOCTL_SET_READOUT_WINDOW = 0x00 | OMV_CSI_FLAG_IOCTL_ABORT,
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OMV_CSI_IOCTL_GET_READOUT_WINDOW = 0x01,
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OMV_CSI_IOCTL_SET_TRIGGERED_MODE = 0x02,
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OMV_CSI_IOCTL_GET_TRIGGERED_MODE = 0x03,
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OMV_CSI_IOCTL_SET_FOV_WIDE = 0x04,
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OMV_CSI_IOCTL_GET_FOV_WIDE = 0x05,
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OMV_CSI_IOCTL_TRIGGER_AUTO_FOCUS = 0x06,
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OMV_CSI_IOCTL_PAUSE_AUTO_FOCUS = 0x07,
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OMV_CSI_IOCTL_RESET_AUTO_FOCUS = 0x08,
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OMV_CSI_IOCTL_WAIT_ON_AUTO_FOCUS = 0x09,
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OMV_CSI_IOCTL_SET_NIGHT_MODE = 0x0A,
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OMV_CSI_IOCTL_GET_NIGHT_MODE = 0x0B,
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OMV_CSI_IOCTL_LEPTON_GET_WIDTH = 0x0C,
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OMV_CSI_IOCTL_LEPTON_GET_HEIGHT = 0x0D,
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OMV_CSI_IOCTL_LEPTON_GET_RADIOMETRY = 0x0E,
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OMV_CSI_IOCTL_LEPTON_GET_REFRESH = 0x0F,
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OMV_CSI_IOCTL_LEPTON_GET_RESOLUTION = 0x10,
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OMV_CSI_IOCTL_LEPTON_RUN_COMMAND = 0x11,
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OMV_CSI_IOCTL_LEPTON_SET_ATTRIBUTE = 0x12,
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OMV_CSI_IOCTL_LEPTON_GET_ATTRIBUTE = 0x13,
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OMV_CSI_IOCTL_LEPTON_GET_FPA_TEMP = 0x14,
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OMV_CSI_IOCTL_LEPTON_GET_AUX_TEMP = 0x15,
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OMV_CSI_IOCTL_LEPTON_SET_MODE = 0x16 | OMV_CSI_FLAG_IOCTL_ABORT,
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OMV_CSI_IOCTL_LEPTON_GET_MODE = 0x17,
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OMV_CSI_IOCTL_LEPTON_SET_RANGE = 0x18 | OMV_CSI_FLAG_IOCTL_ABORT,
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OMV_CSI_IOCTL_LEPTON_GET_RANGE = 0x19,
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OMV_CSI_IOCTL_HIMAX_MD_ENABLE = 0x1A,
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OMV_CSI_IOCTL_HIMAX_MD_CLEAR = 0x1B,
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OMV_CSI_IOCTL_HIMAX_MD_WINDOW = 0x1C | OMV_CSI_FLAG_IOCTL_ABORT,
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OMV_CSI_IOCTL_HIMAX_MD_THRESHOLD = 0x1D,
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OMV_CSI_IOCTL_HIMAX_OSC_ENABLE = 0x1E | OMV_CSI_FLAG_IOCTL_ABORT,
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OMV_CSI_IOCTL_GET_RGB_STATS = 0x1F,
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OMV_CSI_IOCTL_GENX320_SET_BIASES = 0x20,
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OMV_CSI_IOCTL_GENX320_SET_BIAS = 0x21,
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OMV_CSI_IOCTL_GENX320_SET_AFK = 0x22,
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OMV_CSI_IOCTL_GENX320_SET_MODE = 0x23,
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OMV_CSI_IOCTL_GENX320_READ_EVENTS = 0x24,
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OMV_CSI_IOCTL_GENX320_CALIBRATE = 0x25,
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OMV_CSI_IOCTL_UPDATE_AGC_AEC = 0x7F
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} omv_csi_ioctl_t;
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typedef enum {
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OMV_CSI_ERROR_NO_ERROR = 0,
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OMV_CSI_ERROR_CTL_FAILED = -1,
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OMV_CSI_ERROR_CTL_UNSUPPORTED = -2,
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OMV_CSI_ERROR_ISC_UNDETECTED = -3,
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OMV_CSI_ERROR_ISC_UNSUPPORTED = -4,
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OMV_CSI_ERROR_ISC_INIT_FAILED = -5,
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OMV_CSI_ERROR_TIM_INIT_FAILED = -6,
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OMV_CSI_ERROR_DMA_INIT_FAILED = -7,
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OMV_CSI_ERROR_CSI_INIT_FAILED = -8,
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OMV_CSI_ERROR_IO_ERROR = -9,
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OMV_CSI_ERROR_CAPTURE_FAILED = -10,
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OMV_CSI_ERROR_CAPTURE_TIMEOUT = -11,
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OMV_CSI_ERROR_INVALID_FRAMESIZE = -12,
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OMV_CSI_ERROR_INVALID_PIXFORMAT = -13,
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OMV_CSI_ERROR_INVALID_WINDOW = -14,
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OMV_CSI_ERROR_INVALID_FRAMERATE = -15,
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OMV_CSI_ERROR_INVALID_ARGUMENT = -16,
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OMV_CSI_ERROR_PIXFORMAT_UNSUPPORTED = -17,
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OMV_CSI_ERROR_FRAMEBUFFER_ERROR = -18,
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OMV_CSI_ERROR_FRAMEBUFFER_OVERFLOW = -19,
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OMV_CSI_ERROR_JPEG_OVERFLOW = -20,
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OMV_CSI_ERROR_WOULD_BLOCK = -21,
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} omv_csi_error_t;
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#if (OMV_GENX320_ENABLE == 1)
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typedef enum {
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OMV_CSI_GENX320_MODE_HISTO,
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OMV_CSI_GENX320_MODE_EVENT,
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} genx_mode_t;
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typedef enum {
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OMV_CSI_GENX320_BIASES_DEFAULT,
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OMV_CSI_GENX320_BIASES_LOW_LIGHT,
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OMV_CSI_GENX320_BIASES_ACTIVE_MARKER,
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OMV_CSI_GENX320_BIASES_LOW_NOISE,
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OMV_CSI_GENX320_BIASES_HIGH_SPEED
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} omv_csi_genx320_biases_preset_t;
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typedef enum {
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OMV_CSI_GENX320_BIAS_DIFF_OFF,
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OMV_CSI_GENX320_BIAS_DIFF_ON,
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OMV_CSI_GENX320_BIAS_FO,
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OMV_CSI_GENX320_BIAS_HPF,
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OMV_CSI_GENX320_BIAS_REFR
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} omv_csi_genx320_bias_t;
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#endif
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typedef struct _omv_csi omv_csi_t;
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typedef struct _omv_csi_callback_t {
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void (*fun) (void *);
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void *arg;
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} omv_csi_cb_t;
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typedef int (*omv_csi_snapshot_t)
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(omv_csi_t *csi, image_t *image, uint32_t flags);
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typedef int (*omv_csi_post_process_t)
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(omv_csi_t *csi, image_t *image, uint32_t flags);
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typedef struct _omv_clk omv_clk_t;
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typedef struct _omv_clk {
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uint32_t freq;
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#ifdef OMV_CSI_CLK_PORT_BITS
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OMV_CSI_CLK_PORT_BITS
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#endif
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uint32_t (*get_freq) (omv_clk_t *csi);
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int (*set_freq) (omv_clk_t *csi, uint32_t freq);
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} omv_clk_t;
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typedef struct _omv_csi {
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uint32_t chip_id; // Sensor ID 32 bits.
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uint8_t slv_addr; // Sensor I2C slave address.
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// Hardware flags (clock polarities, hw capabilities etc..)
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struct {
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uint32_t reset_pol : 1; // Reset polarity.
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uint32_t power_pol : 1; // Power-down polarity.
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uint32_t vsync_pol : 1; // Vertical sync polarity.
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uint32_t hsync_pol : 1; // Horizontal sync polarity.
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uint32_t pixck_pol : 1; // Pixel clock edge.
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uint32_t frame_sync : 1; // Hardware frame sync.
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uint32_t mono_bpp : 2; // Grayscale bytes per pixel output.
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uint32_t rgb_swap : 1; // Byte-swap 2BPP RGB formats after capture.
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uint32_t yuv_swap : 1; // Byte-swap 2BPP YUV formats after capture.
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uint32_t blc_size : 4; // Number of black level calibration registers.
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uint32_t raw_output : 1; // The sensor supports raw output only.
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uint32_t yuv_format : 1; // YUV/YVU output format.
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uint32_t jpg_format : 3; // JPEG output format/mode.
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uint32_t cfa_format : 3; // CFA format/pattern.
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uint32_t mipi_if : 1; // CSI-2 interface.
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uint32_t mipi_brate : 12; // CSI-2 interface bitrate.
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uint32_t auxiliary : 1; // Indicates that the sensor can be used in dual-CSI config.
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};
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const uint16_t *color_palette; // Color palette used for color lookup.
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bool disable_delays; // Set to true to disable all sensor settling time delays.
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bool disable_full_flush; // Turn off default frame buffer flush policy when full.
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omv_csi_cb_t vsync_cb; // VSYNC callback
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omv_csi_cb_t frame_cb; // Frame callback
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// Sensor state
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omv_csi_sde_t sde; // Special digital effects
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pixformat_t pixformat; // Pixel format
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omv_csi_framesize_t framesize; // Frame size
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int framerate; // Frame rate
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bool first_line; // Set to true when the first line of the frame is being read.
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bool drop_frame; // Set to true to drop the current frame.
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uint32_t last_frame_ms; // Last sampled frame timestamp in milliseconds.
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bool last_frame_ms_valid; // Last sampled frame timestamp in milliseconds valid.
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omv_csi_gainceiling_t gainceiling; // AGC gainceiling
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bool hmirror; // Horizontal Mirror
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bool vflip; // Vertical Flip
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bool transpose; // Transpose Image
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bool auto_rotation; // Rotate Image Automatically
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bool detected; // Set to true when the sensor is initialized.
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bool power_on; // Set to true when the sensor is active.
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omv_i2c_t *i2c; // SCCB/I2C bus.
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framebuffer_t *fb; // Frame buffer pointer
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omv_clk_t *clk; // Clock controller.
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uint32_t clk_hz; // Clock freqeuency request by this CSI.
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uint32_t reset_time_ms; // To track elapsed time since hard-reset.
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uint32_t power_time_ms; // To track elapsed time since power on.
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#ifdef OMV_CSI_PORT_BITS
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// Additional port-specific members like device base pointer,
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// DMA handles, and additional I/Os, are included directly here.
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OMV_CSI_PORT_BITS
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#endif
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// Can be used by port or image sensor drivers to store private
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// data, internal state, or additional operations.
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void *priv;
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// Resolution table
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uint16_t resolution[OMV_CSI_FRAMESIZE_MAX][2];
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// Sensor function pointers
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int (*reset) (omv_csi_t *csi);
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int (*sleep) (omv_csi_t *csi, int enable);
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int (*shutdown) (omv_csi_t *csi, int enable);
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int (*match) (omv_csi_t *csi, size_t id);
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int (*read_reg) (omv_csi_t *csi, uint16_t reg_addr);
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int (*write_reg) (omv_csi_t *csi, uint16_t reg_addr, uint16_t reg_data);
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int (*set_pixformat) (omv_csi_t *csi, pixformat_t pixformat);
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int (*set_framesize) (omv_csi_t *csi, omv_csi_framesize_t framesize);
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int (*set_framerate) (omv_csi_t *csi, int framerate);
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int (*set_contrast) (omv_csi_t *csi, int level);
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int (*set_brightness) (omv_csi_t *csi, int level);
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int (*set_saturation) (omv_csi_t *csi, int level);
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int (*set_gainceiling) (omv_csi_t *csi, omv_csi_gainceiling_t gainceiling);
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int (*set_quality) (omv_csi_t *csi, int quality);
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int (*set_colorbar) (omv_csi_t *csi, int enable);
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int (*set_auto_gain) (omv_csi_t *csi, int enable, float gain_db, float gain_db_ceiling);
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int (*get_gain_db) (omv_csi_t *csi, float *gain_db);
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int (*set_auto_exposure) (omv_csi_t *csi, int enable, int exposure_us);
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int (*get_exposure_us) (omv_csi_t *csi, int *exposure_us);
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int (*set_auto_whitebal) (omv_csi_t *csi, int enable, float r_gain_db, float g_gain_db, float b_gain_db);
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int (*get_rgb_gain_db) (omv_csi_t *csi, float *r_gain_db, float *g_gain_db, float *b_gain_db);
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int (*set_auto_blc) (omv_csi_t *csi, int enable, int *regs);
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int (*get_blc_regs) (omv_csi_t *csi, int *regs);
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int (*set_hmirror) (omv_csi_t *csi, int enable);
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int (*set_vflip) (omv_csi_t *csi, int enable);
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int (*set_special_effect) (omv_csi_t *csi, omv_csi_sde_t sde);
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int (*set_lens_correction) (omv_csi_t *csi, int enable, int radi, int coef);
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int (*ioctl) (omv_csi_t *csi, int request, va_list ap);
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int (*config) (omv_csi_t *csi, omv_csi_config_t config);
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int (*abort) (omv_csi_t *csi, bool fifo_flush, bool in_irq);
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int (*snapshot) (omv_csi_t *csi, image_t *image, uint32_t flags);
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int (*post_process) (omv_csi_t *csi, image_t *image, uint32_t flags);
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} omv_csi_t;
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// CSI array
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extern omv_csi_t csi_all[OMV_CSI_MAX_DEVICES];
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// Resets the sensor state on soft-reboots.
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void omv_csi_init0();
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// Initializes CSI struct with default ops.
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int omv_csi_init();
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// Implemented by ports to set the default CSI ops.
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int omv_csi_ops_init(omv_csi_t *csi);
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// Return CSI instance.
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// If id == -1, return the main csi, otherwise look up csi by chip-id.
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omv_csi_t *omv_csi_get(int id);
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// Detect and initialize the image sensor.
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int omv_csi_probe(omv_i2c_t *i2c);
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// Match CSI chip ID with provided ID.
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int omv_csi_match(omv_csi_t *csi, size_t id);
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// This function is called after a setting that may require reconfiguring
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// the hardware changes, such as window size, frame size, or pixel format.
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int omv_csi_config(omv_csi_t *csi, omv_csi_config_t config);
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// Abort frame capture and disable IRQs, DMA etc..
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int omv_csi_abort(omv_csi_t *csi, bool fifo_flush, bool in_irq);
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// Call on soft-reboot
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void omv_csi_abort_all(void);
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// Reset the sensor to its default state.
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int omv_csi_reset(omv_csi_t *csi, bool hard);
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int omv_csi_get_id(omv_csi_t *csi);
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// Returns the xclk freq in hz.
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uint32_t omv_csi_get_clk_frequency(omv_csi_t *csi, bool nominal);
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// Returns the xclk freq in hz.
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int omv_csi_set_clk_frequency(omv_csi_t *csi, uint32_t frequency);
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// Return true if the sensor was detected and initialized.
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bool omv_csi_is_detected(omv_csi_t *csi);
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// Sleep mode.
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int omv_csi_sleep(omv_csi_t *csi, int enable);
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// Shutdown mode.
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int omv_csi_shutdown(omv_csi_t *csi, int enable);
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// Read a csi register.
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int omv_csi_read_reg(omv_csi_t *csi, uint16_t reg_addr);
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// Write a csi register.
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int omv_csi_write_reg(omv_csi_t *csi, uint16_t reg_addr, uint16_t reg_data);
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// Set the sensor pixel format.
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int omv_csi_set_pixformat(omv_csi_t *csi, pixformat_t pixformat);
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// Set the sensor frame size.
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int omv_csi_set_framesize(omv_csi_t *csi, omv_csi_framesize_t framesize);
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// Set the sensor frame rate.
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int omv_csi_set_framerate(omv_csi_t *csi, int framerate);
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// Return the number of bytes per pixel to read from the image sensor.
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uint32_t omv_csi_get_src_bpp(omv_csi_t *csi);
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// Return the number of bytes per pixel to write to memory.
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uint32_t omv_csi_get_dst_bpp(omv_csi_t *csi);
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// Returns true if a crop is being applied to the frame buffer.
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bool omv_csi_get_cropped(omv_csi_t *csi);
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// Set window size.
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int omv_csi_set_windowing(omv_csi_t *csi, int x, int y, int w, int h);
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// Set the sensor contrast level (from -3 to +3).
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int omv_csi_set_contrast(omv_csi_t *csi, int level);
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// Set the sensor brightness level (from -3 to +3).
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int omv_csi_set_brightness(omv_csi_t *csi, int level);
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// Set the sensor saturation level (from -3 to +3).
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int omv_csi_set_saturation(omv_csi_t *csi, int level);
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// Set the sensor AGC gain ceiling.
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// Note: This function has no effect when AGC (Automatic Gain Control) is disabled.
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int omv_csi_set_gainceiling(omv_csi_t *csi, omv_csi_gainceiling_t gainceiling);
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// Set the quantization scale factor, controls JPEG quality (quality 0-255).
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int omv_csi_set_quality(omv_csi_t *csi, int qs);
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// Enable/disable the colorbar mode.
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int omv_csi_set_colorbar(omv_csi_t *csi, int enable);
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// Enable auto gain or set value manually.
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int omv_csi_set_auto_gain(omv_csi_t *csi, int enable, float gain_db, float gain_db_ceiling);
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// Get the gain value.
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int omv_csi_get_gain_db(omv_csi_t *csi, float *gain_db);
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// Enable auto exposure or set value manually.
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int omv_csi_set_auto_exposure(omv_csi_t *csi, int enable, int exposure_us);
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// Get the exposure value.
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int omv_csi_get_exposure_us(omv_csi_t *csi, int *get_exposure_us);
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// Enable auto white balance or set value manually.
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int omv_csi_set_auto_whitebal(omv_csi_t *csi, int enable, float r_gain_db, float g_gain_db, float b_gain_db);
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// Get the rgb gain values.
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int omv_csi_get_rgb_gain_db(omv_csi_t *csi, float *r_gain_db, float *g_gain_db, float *b_gain_db);
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// Enable auto blc (black level calibration) or set from previous calibration.
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int omv_csi_set_auto_blc(omv_csi_t *csi, int enable, int *regs);
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// Get black level valibration register values.
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int omv_csi_get_blc_regs(omv_csi_t *csi, int *regs);
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// Enable/disable the hmirror mode.
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int omv_csi_set_hmirror(omv_csi_t *csi, int enable);
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// Get hmirror status.
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bool omv_csi_get_hmirror(omv_csi_t *csi);
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// Enable/disable the vflip mode.
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int omv_csi_set_vflip(omv_csi_t *csi, int enable);
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// Get vflip status.
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bool omv_csi_get_vflip(omv_csi_t *csi);
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// Enable/disable the transpose mode.
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int omv_csi_set_transpose(omv_csi_t *csi, bool enable);
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// Get transpose mode state.
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bool omv_csi_get_transpose(omv_csi_t *csi);
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// Enable/disable the auto rotation mode.
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int omv_csi_set_auto_rotation(omv_csi_t *csi, bool enable);
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// Get transpose mode state.
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bool omv_csi_get_auto_rotation(omv_csi_t *csi);
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// Set the number of virtual frame buffers.
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int omv_csi_set_framebuffers(omv_csi_t *csi, size_t count, bool expand);
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// Drop the next frame to match the current frame rate.
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void omv_csi_throttle_framerate(omv_csi_t *csi);
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// Set special digital effects (SDE).
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int omv_csi_set_special_effect(omv_csi_t *csi, omv_csi_sde_t sde);
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// Set lens shading correction
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int omv_csi_set_lens_correction(omv_csi_t *csi, int enable, int radi, int coef);
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// IOCTL function
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int omv_csi_ioctl(omv_csi_t *csi, int request, ...);
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// Set vsync callback function.
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int omv_csi_set_vsync_callback(omv_csi_t *csi, omv_csi_cb_t cb);
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// Set frame callback function.
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int omv_csi_set_frame_callback(omv_csi_t *csi, omv_csi_cb_t cb);
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// Set color palette
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int omv_csi_set_color_palette(omv_csi_t *csi, const uint16_t *color_palette);
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// Get color palette
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const uint16_t *omv_csi_get_color_palette(omv_csi_t *csi);
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// Return true if the current frame size/format fits in RAM.
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int omv_csi_check_framebuffer_size(omv_csi_t *csi);
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// Auto-crop frame buffer until it fits in RAM (may switch pixel format to BAYER).
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int omv_csi_auto_crop_framebuffer(omv_csi_t *csi);
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// Copy a single line buffer to its destination. The copying process is
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// DMA-accelerated, if available, and falls back to slow software if not.
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int omv_csi_copy_line(omv_csi_t *csi, void *dma, uint8_t *src, uint8_t *dst);
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// Default snapshot function.
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int omv_csi_snapshot(omv_csi_t *csi, image_t *image, uint32_t flags);
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// Convert csi chip id to string.
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const char *omv_csi_name(omv_csi_t *csi);
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// Convert csi error codes to strings.
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const char *omv_csi_strerror(int error);
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#endif // __OMV_CSI_H__
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