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BranchCommit messageAuthorAge
imx8mp/extensible-formatipa: rkisp1: Use the extensible parameters formatJacopo Mondi8 months
imx8mp/extensible-format-v8ipa: rkisp1: params: Update to v8Jacopo Mondi6 months
imx8mp/extensible-format-v9rkisp1: params: update to v9Jacopo Mondi6 months
isi/raw_sensorlibcamera: imx8-isi: Split Bayer/YUV config generationJacopo Mondi2 years
isi/raw_sensor_v2fixup! libcamera: imx8-isi: Break out YUV format selectionJacopo Mondi2 years
jmondi/android/ndk/pinephoneproandroid: data: Add camera HAL config for PinephoneProJacopo Mondi2 years
jmondi/android/pinephoneproandroid: Fix improper file descriptor enumerationNicholas Roth2 years
jmondi/android/vndkipa: workaround libcxx duration limitationNicholas Roth16 months
jmondi/device-match-generalize[HACK] libcamera: pipeline: Add usb-test pipelineJacopo Mondi18 months
jmondi/imx8mp/debix-aipa: rkisp1: agc: Load ExposureValue from configJacopo Mondi23 months
jmondi/lc-compliance-crosWIP: test controls in a RequestJacopo Mondi14 months
jmondi/pinephonelibcamera: v4l2_pixelformat: Map formats::MJPEG to V4L2_PIX_FMT_JPEGJacopo Mondi3 years
jmondi/pinephonepro[WIP] camera_sensor: Do not consider FOV in getFormat()Jacopo Mondi2 years
jmondi/pinephonepro-af[HACK] ipa: af: Force AfModeContinuousJacopo Mondi17 months
jmondi/rk3399/google-dru-scarletipa: rkisp1: Add tuning files for Google DRU "Scarlet" sensorsJacopo Mondi23 months
jmondi/rockpi/af/imx519ipa: algorithms: af: Do not inherit from AlgorithmJacopo Mondi3 years
jmondi/rpi5-on-mainlinedebugJacopo Mondi13 months
multicontext/rpi/v3HACK: acquire media device non-exclusiveleyJacopo Mondi6 months
pfc/rkisp1-free-runipa: rkisp1: Initialize FrameContext.agc.meteringModeJacopo Mondi4 months
pfc/rkisp1-free-run-upstreaminglibcamera: rkisp1: Create main buffer pool out of if(!isRaw)Jacopo Mondi4 months
pfc/rkisp1-free-run-v2ipa: rkisp1: Have algos initialize FrameContextJacopo Mondi4 months
rcar-gen4libcamera: introduce rcar-gen4 supportJacopo Mondi6 weeks
yaml-emitterWIPJacopo Mondi4 months
 
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * v4l2_subdevice.cpp - V4L2 Subdevice
 */

#include "libcamera/internal/v4l2_subdevice.h"

#include <fcntl.h>
#include <iomanip>
#include <regex>
#include <sstream>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>

#include <linux/media-bus-format.h>
#include <linux/v4l2-subdev.h>

#include <libcamera/geometry.h>

#include <libcamera/base/log.h>
#include <libcamera/base/utils.h>

#include "libcamera/internal/media_device.h"
#include "libcamera/internal/media_object.h"

/**
 * \file v4l2_subdevice.h
 * \brief V4L2 Subdevice API
 */

namespace libcamera {

LOG_DECLARE_CATEGORY(V4L2)

namespace {

/*
 * \struct V4L2SubdeviceFormatInfo
 * \brief Information about media bus formats
 * \param bitsPerPixel Bits per pixel
 * \param name Name of MBUS format
 */
struct V4L2SubdeviceFormatInfo {
	unsigned int bitsPerPixel;
	const char *name;
};

/*
 * \var formatInfoMap
 * \brief A map that associates V4L2SubdeviceFormatInfo struct to V4L2 media
 * bus codes
 */
const std::map<uint32_t, V4L2SubdeviceFormatInfo> formatInfoMap = {
	{ V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE, { 16, "RGB444_2X8_PADHI_BE" } },
	{ V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE, { 16, "RGB444_2X8_PADHI_LE" } },
	{ V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, { 16, "RGB555_2X8_PADHI_BE" } },
	{ V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, { 16, "RGB555_2X8_PADHI_LE" } },
	{ V4L2_MBUS_FMT_BGR565_2X8_BE, { 16, "BGR565_2X8_BE" } },
	{ V4L2_MBUS_FMT_BGR565_2X8_LE, { 16, "BGR565_2X8_LE" } },
	{ V4L2_MBUS_FMT_RGB565_2X8_BE, { 16, "RGB565_2X8_BE" } },
	{ V4L2_MBUS_FMT_RGB565_2X8_LE, { 16, "RGB565_2X8_LE" } },
	{ V4L2_MBUS_FMT_RGB666_1X18, { 18, "RGB666_1X18" } },
	{ V4L2_MBUS_FMT_RGB888_1X24, { 24, "RGB888_1X24" } },
	{ V4L2_MBUS_FMT_RGB888_2X12_BE, { 24, "RGB888_2X12_BE" } },
	{ V4L2_MBUS_FMT_RGB888_2X12_LE, { 24, "RGB888_2X12_LE" } },
	{ V4L2_MBUS_FMT_ARGB8888_1X32, { 32, "ARGB8888_1X32" } },
	{ V4L2_MBUS_FMT_Y8_1X8, { 8, "Y8_1X8" } },
	{ V4L2_MBUS_FMT_UV8_1X8, { 8, "UV8_1X8" } },
	{ V4L2_MBUS_FMT_UYVY8_1_5X8, { 12, "UYVY8_1_5X8" } },
	{ V4L2_MBUS_FMT_VYUY8_1_5X8, { 12, "VYUY8_1_5X8" } },
	{ V4L2_MBUS_FMT_YUYV8_1_5X8, { 12, "YUYV8_1_5X8" } },
	{ V4L2_MBUS_FMT_YVYU8_1_5X8, { 12, "YVYU8_1_5X8" } },
	{ V4L2_MBUS_FMT_UYVY8_2X8, { 16, "UYVY8_2X8" } },
	{ V4L2_MBUS_FMT_VYUY8_2X8, { 16, "VYUY8_2X8" } },
	{ V4L2_MBUS_FMT_YUYV8_2X8, { 16, "YUYV8_2X8" } },
	{ V4L2_MBUS_FMT_YVYU8_2X8, { 16, "YVYU8_2X8" } },
	{ V4L2_MBUS_FMT_Y10_1X10, { 10, "Y10_1X10" } },
	{ V4L2_MBUS_FMT_UYVY10_2X10, { 20, "UYVY10_2X10" } },
	{ V4L2_MBUS_FMT_VYUY10_2X10, { 20, "VYUY10_2X10" } },
	{ V4L2_MBUS_FMT_YUYV10_2X10, { 20, "YUYV10_2X10" } },
	{ V4L2_MBUS_FMT_YVYU10_2X10, { 20, "YVYU10_2X10" } },
	{ V4L2_MBUS_FMT_Y12_1X12, { 12, "Y12_1X12" } },
	{ V4L2_MBUS_FMT_UYVY8_1X16, { 16, "UYVY8_1X16" } },
	{ V4L2_MBUS_FMT_VYUY8_1X16, { 16, "VYUY8_1X16" } },
	{ V4L2_MBUS_FMT_YUYV8_1X16, { 16, "YUYV8_1X16" } },
	{ V4L2_MBUS_FMT_YVYU8_1X16, { 16, "YVYU8_1X16" } },
	{ V4L2_MBUS_FMT_YDYUYDYV8_1X16, { 16, "YDYUYDYV8_1X16" } },
	{ V4L2_MBUS_FMT_UYVY10_1X20, { 20, "UYVY10_1X20" } },
	{ V4L2_MBUS_FMT_VYUY10_1X20, { 20, "VYUY10_1X20" } },
	{ V4L2_MBUS_FMT_YUYV10_1X20, { 20, "YUYV10_1X20" } },
	{ V4L2_MBUS_FMT_YVYU10_1X20, { 20, "YVYU10_1X20" } },
	{ V4L2_MBUS_FMT_YUV10_1X30, { 30, "YUV10_1X30" } },
	{ V4L2_MBUS_FMT_AYUV8_1X32, { 32, "AYUV8_1X32" } },
	{ V4L2_MBUS_FMT_UYVY12_2X12, { 24, "UYVY12_2X12" } },
	{ V4L2_MBUS_FMT_VYUY12_2X12, { 24, "VYUY12_2X12" } },
	{ V4L2_MBUS_FMT_YUYV12_2X12, { 24, "YUYV12_2X12" } },
	{ V4L2_MBUS_FMT_YVYU12_2X12, { 24, "YVYU12_2X12" } },
	{ V4L2_MBUS_FMT_UYVY12_1X24, { 24, "UYVY12_1X24" } },
	{ V4L2_MBUS_FMT_VYUY12_1X24, { 24, "VYUY12_1X24" } },
	{ V4L2_MBUS_FMT_YUYV12_1X24, { 24, "YUYV12_1X24" } },
	{ V4L2_MBUS_FMT_YVYU12_1X24, { 24, "YVYU12_1X24" } },
	{ V4L2_MBUS_FMT_SBGGR8_1X8, { 8, "SBGGR8_1X8" } },
	{ V4L2_MBUS_FMT_SGBRG8_1X8, { 8, "SGBRG8_1X8" } },
	{ V4L2_MBUS_FMT_SGRBG8_1X8, { 8, "SGRBG8_1X8" } },
	{ V4L2_MBUS_FMT_SRGGB8_1X8, { 8, "SRGGB8_1X8" } },
	{ V4L2_MBUS_FMT_SBGGR10_ALAW8_1X8, { 8, "SBGGR10_ALAW8_1X8" } },
	{ V4L2_MBUS_FMT_SGBRG10_ALAW8_1X8, { 8, "SGBRG10_ALAW8_1X8" } },
	{ V4L2_MBUS_FMT_SGRBG10_ALAW8_1X8, { 8, "SGRBG10_ALAW8_1X8" } },
	{ V4L2_MBUS_FMT_SRGGB10_ALAW8_1X8, { 8, "SRGGB10_ALAW8_1X8" } },
	{ V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8, { 8, "SBGGR10_DPCM8_1X8" } },
	{ V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8, { 8, "SGBRG10_DPCM8_1X8" } },