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authorJacopo Mondi <jacopo@jmondi.org>2020-03-31 13:01:19 +0200
committerJacopo Mondi <jacopo@jmondi.org>2020-04-28 22:25:22 +0200
commit5db1426b6016d50e95dd922e7af1c30d26751323 (patch)
treef5e0447ec7ca2b0c4dc4c48141a2419b6e2b19d1 /src
parent56baa28a791dee950b27479d4407ad699567a795 (diff)
libcamera: v4l2_subdevice: Add format information
Define a map of static information associated with a media bus code. Start by reporting the bits-per-pixel for each media bus code defined by the V4L2 kernel API, to later expand it when necessary. Add to the V4L2SubdeviceFormat class a method to return the bits per pixel, retrieved by inspecting the static map of format information. While at it, remove a rogue map inclusion from header file. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Diffstat (limited to 'src')
-rw-r--r--src/libcamera/include/v4l2_subdevice.h2
-rw-r--r--src/libcamera/v4l2_subdevice.cpp102
2 files changed, 103 insertions, 1 deletions
diff --git a/src/libcamera/include/v4l2_subdevice.h b/src/libcamera/include/v4l2_subdevice.h
index 27ba5b17..d0e565db 100644
--- a/src/libcamera/include/v4l2_subdevice.h
+++ b/src/libcamera/include/v4l2_subdevice.h
@@ -7,7 +7,6 @@
#ifndef __LIBCAMERA_V4L2_SUBDEVICE_H__
#define __LIBCAMERA_V4L2_SUBDEVICE_H__
-#include <map>
#include <string>
#include <vector>
@@ -27,6 +26,7 @@ struct V4L2SubdeviceFormat {
Size size;
const std::string toString() const;
+ uint8_t bitsPerPixel() const;
};
class V4L2Subdevice : public V4L2Device
diff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp
index 06bc430f..2b756178 100644
--- a/src/libcamera/v4l2_subdevice.cpp
+++ b/src/libcamera/v4l2_subdevice.cpp
@@ -14,6 +14,7 @@
#include <sys/ioctl.h>
#include <unistd.h>
+#include <linux/media-bus-format.h>
#include <linux/v4l2-subdev.h>
#include <libcamera/geometry.h>
@@ -32,6 +33,90 @@ namespace libcamera {
LOG_DECLARE_CATEGORY(V4L2)
+namespace {
+
+/*
+ * \var formatInfoMap
+ * \brief A map that associates bits per pixel to V4L2 media bus codes
+ */
+const std::map<uint32_t, unsigned int> formatInfoMap = {
+ { V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE, 16 },
+ { V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE, 16 },
+ { V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, 16 },
+ { V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, 16 },
+ { V4L2_MBUS_FMT_BGR565_2X8_BE, 16 },
+ { V4L2_MBUS_FMT_BGR565_2X8_LE, 16 },
+ { V4L2_MBUS_FMT_RGB565_2X8_BE, 16 },
+ { V4L2_MBUS_FMT_RGB565_2X8_LE, 16 },
+ { V4L2_MBUS_FMT_RGB666_1X18, 18 },
+ { V4L2_MBUS_FMT_RGB888_1X24, 24 },
+ { V4L2_MBUS_FMT_RGB888_2X12_BE, 24 },
+ { V4L2_MBUS_FMT_RGB888_2X12_LE, 24 },
+ { V4L2_MBUS_FMT_ARGB8888_1X32, 32 },
+ { V4L2_MBUS_FMT_Y8_1X8, 8 },
+ { V4L2_MBUS_FMT_UV8_1X8, 8 },
+ { V4L2_MBUS_FMT_UYVY8_1_5X8, 12 },
+ { V4L2_MBUS_FMT_VYUY8_1_5X8, 12 },
+ { V4L2_MBUS_FMT_YUYV8_1_5X8, 12 },
+ { V4L2_MBUS_FMT_YVYU8_1_5X8, 12 },
+ { V4L2_MBUS_FMT_UYVY8_2X8, 16 },
+ { V4L2_MBUS_FMT_VYUY8_2X8, 16 },
+ { V4L2_MBUS_FMT_YUYV8_2X8, 16 },
+ { V4L2_MBUS_FMT_YVYU8_2X8, 16 },
+ { V4L2_MBUS_FMT_Y10_1X10, 10 },
+ { V4L2_MBUS_FMT_UYVY10_2X10, 20 },
+ { V4L2_MBUS_FMT_VYUY10_2X10, 20 },
+ { V4L2_MBUS_FMT_YUYV10_2X10, 20 },
+ { V4L2_MBUS_FMT_YVYU10_2X10, 20 },
+ { V4L2_MBUS_FMT_Y12_1X12, 12 },
+ { V4L2_MBUS_FMT_UYVY8_1X16, 16 },
+ { V4L2_MBUS_FMT_VYUY8_1X16, 16 },
+ { V4L2_MBUS_FMT_YUYV8_1X16, 16 },
+ { V4L2_MBUS_FMT_YVYU8_1X16, 16 },
+ { V4L2_MBUS_FMT_YDYUYDYV8_1X16, 16 },
+ { V4L2_MBUS_FMT_UYVY10_1X20, 20 },
+ { V4L2_MBUS_FMT_VYUY10_1X20, 20 },
+ { V4L2_MBUS_FMT_YUYV10_1X20, 20 },
+ { V4L2_MBUS_FMT_YVYU10_1X20, 20 },
+ { V4L2_MBUS_FMT_YUV10_1X30, 30 },
+ { V4L2_MBUS_FMT_AYUV8_1X32, 32 },
+ { V4L2_MBUS_FMT_UYVY12_2X12, 24 },
+ { V4L2_MBUS_FMT_VYUY12_2X12, 24 },
+ { V4L2_MBUS_FMT_YUYV12_2X12, 24 },
+ { V4L2_MBUS_FMT_YVYU12_2X12, 24 },
+ { V4L2_MBUS_FMT_UYVY12_1X24, 24 },
+ { V4L2_MBUS_FMT_VYUY12_1X24, 24 },
+ { V4L2_MBUS_FMT_YUYV12_1X24, 24 },
+ { V4L2_MBUS_FMT_YVYU12_1X24, 24 },
+ { V4L2_MBUS_FMT_SBGGR8_1X8, 8 },
+ { V4L2_MBUS_FMT_SGBRG8_1X8, 8 },
+ { V4L2_MBUS_FMT_SGRBG8_1X8, 8 },
+ { V4L2_MBUS_FMT_SRGGB8_1X8, 8 },
+ { V4L2_MBUS_FMT_SBGGR10_ALAW8_1X8, 8 },
+ { V4L2_MBUS_FMT_SGBRG10_ALAW8_1X8, 8 },
+ { V4L2_MBUS_FMT_SGRBG10_ALAW8_1X8, 8 },
+ { V4L2_MBUS_FMT_SRGGB10_ALAW8_1X8, 8 },
+ { V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8, 8 },
+ { V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8, 8 },
+ { V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, 8 },
+ { V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8, 8 },
+ { V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE, 16 },
+ { V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, 16 },
+ { V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE, 16 },
+ { V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE, 16 },
+ { V4L2_MBUS_FMT_SBGGR10_1X10, 10 },
+ { V4L2_MBUS_FMT_SGBRG10_1X10, 10 },
+ { V4L2_MBUS_FMT_SGRBG10_1X10, 10 },
+ { V4L2_MBUS_FMT_SRGGB10_1X10, 10 },
+ { V4L2_MBUS_FMT_SBGGR12_1X12, 12 },
+ { V4L2_MBUS_FMT_SGBRG12_1X12, 12 },
+ { V4L2_MBUS_FMT_SGRBG12_1X12, 12 },
+ { V4L2_MBUS_FMT_SRGGB12_1X12, 12 },
+ { V4L2_MBUS_FMT_AHSV8888_1X32, 32 },
+};
+
+} /* namespace */
+
/**
* \struct V4L2SubdeviceFormat
* \brief The V4L2 sub-device image format and sizes
@@ -82,6 +167,23 @@ const std::string V4L2SubdeviceFormat::toString() const
}
/**
+ * \brief Retrieve the number of bits per pixel for the V4L2 subdevice format
+ * \return The number of bits per pixel for the format, or 0 if the format is
+ * not supported
+ */
+uint8_t V4L2SubdeviceFormat::bitsPerPixel() const
+{
+ const auto it = formatInfoMap.find(mbus_code);
+ if (it == formatInfoMap.end()) {
+ LOG(V4L2, Error) << "No information available for format '"
+ << toString() << "'";
+ return 0;
+ }
+
+ return it->second;
+}
+
+/**
* \class V4L2Subdevice
* \brief A V4L2 subdevice as exposed by the Linux kernel
*