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gstv4l2object.c
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/* GStreamer
*
* Copyright (C) 2001-2002 Ronald Bultje <[email protected]>
* 2006 Edgard Lima <[email protected]>
* Copyright (c) 2018-2022, NVIDIA CORPORATION. All rights reserved.
*
* gstv4l2object.c: base class for V4L2 elements
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version. This library is distributed in the hope
* that it will be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU Library General Public License for more details.
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#ifdef HAVE_GUDEV
#include <gudev/gudev.h>
#endif
#include "linux/videodev2.h"
#include "gstv4l2object.h"
#ifndef USE_V4L2_TARGET_NV
#include "gstv4l2tuner.h"
#include "gstv4l2colorbalance.h"
#else
#include "gstv4l2videodec.h"
#include "gstv4l2videoenc.h"
#endif
#include "gst/gst-i18n-plugin.h"
#include <gst/video/video.h>
GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
#define GST_CAT_DEFAULT v4l2_debug
#define DEFAULT_PROP_DEVICE_NAME NULL
#define DEFAULT_PROP_DEVICE_FD -1
#define DEFAULT_PROP_FLAGS 0
#define DEFAULT_PROP_TV_NORM 0
#define DEFAULT_PROP_IO_MODE GST_V4L2_IO_AUTO
#define ENCODED_BUFFER_SIZE (4 * 1024 * 1024)
enum
{
PROP_0,
V4L2_STD_OBJECT_PROPS,
};
/*
* common format / caps utilities:
*/
typedef enum
{
GST_V4L2_RAW = 1 << 0,
GST_V4L2_CODEC = 1 << 1,
GST_V4L2_TRANSPORT = 1 << 2,
GST_V4L2_NO_PARSE = 1 << 3,
GST_V4L2_ALL = 0xffff
} GstV4L2FormatFlags;
typedef struct
{
guint32 format;
gboolean dimensions;
GstV4L2FormatFlags flags;
} GstV4L2FormatDesc;
static const GstV4L2FormatDesc gst_v4l2_formats[] = {
/* RGB formats */
{V4L2_PIX_FMT_RGB332, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_ARGB555, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_XRGB555, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_ARGB555X, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_XRGB555X, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_RGB565, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_RGB565X, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_BGR666, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_BGR24, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_RGB24, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_ABGR32, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_XBGR32, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_ARGB32, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_XRGB32, TRUE, GST_V4L2_RAW},
/* Deprecated Packed RGB Image Formats (alpha ambiguity) */
{V4L2_PIX_FMT_RGB444, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_RGB555, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_RGB555X, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_BGR32, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_RGB32, TRUE, GST_V4L2_RAW},
/* Grey formats */
{V4L2_PIX_FMT_GREY, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_Y4, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_Y6, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_Y10, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_Y12, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_Y16, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_Y16_BE, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_Y10BPACK, TRUE, GST_V4L2_RAW},
/* Palette formats */
{V4L2_PIX_FMT_PAL8, TRUE, GST_V4L2_RAW},
/* Chrominance formats */
{V4L2_PIX_FMT_UV8, TRUE, GST_V4L2_RAW},
/* Luminance+Chrominance formats */
{V4L2_PIX_FMT_YVU410, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YVU420, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YVU420M, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YUYV, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YYUV, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YVYU, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_UYVY, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_VYUY, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YUV422P, TRUE, GST_V4L2_RAW},
#ifdef USE_V4L2_TARGET_NV
{V4L2_PIX_FMT_YUV422M, TRUE, GST_V4L2_RAW},
#endif
{V4L2_PIX_FMT_YUV411P, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_Y41P, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YUV444, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YUV555, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YUV565, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YUV32, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YUV410, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YUV420, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_YUV420M, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_HI240, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_HM12, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_M420, TRUE, GST_V4L2_RAW},
/* two planes -- one Y, one Cr + Cb interleaved */
{V4L2_PIX_FMT_NV12, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV12M, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV12MT, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV12MT_16X16, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV21, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV21M, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV16, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV16M, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV61, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV61M, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV24, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV42, TRUE, GST_V4L2_RAW},
#ifdef USE_V4L2_TARGET_NV
{V4L2_PIX_FMT_P010, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_P010M, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_P012, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_P012M, TRUE, GST_V4L2_RAW},
{V4L2_PIX_FMT_NV24M, TRUE, GST_V4L2_RAW},
#endif
/* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
{V4L2_PIX_FMT_SBGGR8, TRUE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_SGBRG8, TRUE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_SGRBG8, TRUE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_SRGGB8, TRUE, GST_V4L2_CODEC},
/* compressed formats */
{V4L2_PIX_FMT_MJPEG, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_JPEG, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_PJPG, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_DV, FALSE, GST_V4L2_TRANSPORT},
{V4L2_PIX_FMT_MPEG, FALSE, GST_V4L2_TRANSPORT},
{V4L2_PIX_FMT_H264, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_H264_NO_SC, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_H264_MVC, FALSE, GST_V4L2_CODEC},
#ifdef USE_V4L2_TARGET_NV
{V4L2_PIX_FMT_H265, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_AV1, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
#endif
{V4L2_PIX_FMT_H263, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_MPEG1, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_MPEG2, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_MPEG4, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_XVID, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_VC1_ANNEX_G, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_VC1_ANNEX_L, FALSE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_VP8, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
{V4L2_PIX_FMT_VP9, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
/* Vendor-specific formats */
{V4L2_PIX_FMT_WNVA, TRUE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_SN9C10X, TRUE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_PWC1, TRUE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_PWC2, TRUE, GST_V4L2_CODEC},
};
#define GST_V4L2_FORMAT_COUNT (G_N_ELEMENTS (gst_v4l2_formats))
static GSList *gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object);
#define GST_TYPE_V4L2_DEVICE_FLAGS (gst_v4l2_device_get_type ())
static GType
gst_v4l2_device_get_type (void)
{
static GType v4l2_device_type = 0;
if (v4l2_device_type == 0) {
static const GFlagsValue values[] = {
{V4L2_CAP_VIDEO_CAPTURE, "Device supports video capture", "capture"},
{V4L2_CAP_VIDEO_OUTPUT, "Device supports video playback", "output"},
{V4L2_CAP_VIDEO_OVERLAY, "Device supports video overlay", "overlay"},
{V4L2_CAP_VBI_CAPTURE, "Device supports the VBI capture", "vbi-capture"},
{V4L2_CAP_VBI_OUTPUT, "Device supports the VBI output", "vbi-output"},
{V4L2_CAP_TUNER, "Device has a tuner or modulator", "tuner"},
{V4L2_CAP_AUDIO, "Device has audio inputs or outputs", "audio"},
{0, NULL, NULL}
};
v4l2_device_type =
g_flags_register_static ("GstV4l2DeviceTypeFlags", values);
}
return v4l2_device_type;
}
#define GST_TYPE_V4L2_TV_NORM (gst_v4l2_tv_norm_get_type ())
static GType
gst_v4l2_tv_norm_get_type (void)
{
static GType v4l2_tv_norm = 0;
if (!v4l2_tv_norm) {
static const GEnumValue tv_norms[] = {
{0, "none", "none"},
{V4L2_STD_NTSC, "NTSC", "NTSC"},
{V4L2_STD_NTSC_M, "NTSC-M", "NTSC-M"},
{V4L2_STD_NTSC_M_JP, "NTSC-M-JP", "NTSC-M-JP"},
{V4L2_STD_NTSC_M_KR, "NTSC-M-KR", "NTSC-M-KR"},
{V4L2_STD_NTSC_443, "NTSC-443", "NTSC-443"},
{V4L2_STD_PAL, "PAL", "PAL"},
{V4L2_STD_PAL_BG, "PAL-BG", "PAL-BG"},
{V4L2_STD_PAL_B, "PAL-B", "PAL-B"},
{V4L2_STD_PAL_B1, "PAL-B1", "PAL-B1"},
{V4L2_STD_PAL_G, "PAL-G", "PAL-G"},
{V4L2_STD_PAL_H, "PAL-H", "PAL-H"},
{V4L2_STD_PAL_I, "PAL-I", "PAL-I"},
{V4L2_STD_PAL_DK, "PAL-DK", "PAL-DK"},
{V4L2_STD_PAL_D, "PAL-D", "PAL-D"},
{V4L2_STD_PAL_D1, "PAL-D1", "PAL-D1"},
{V4L2_STD_PAL_K, "PAL-K", "PAL-K"},
{V4L2_STD_PAL_M, "PAL-M", "PAL-M"},
{V4L2_STD_PAL_N, "PAL-N", "PAL-N"},
{V4L2_STD_PAL_Nc, "PAL-Nc", "PAL-Nc"},
{V4L2_STD_PAL_60, "PAL-60", "PAL-60"},
{V4L2_STD_SECAM, "SECAM", "SECAM"},
{V4L2_STD_SECAM_B, "SECAM-B", "SECAM-B"},
{V4L2_STD_SECAM_G, "SECAM-G", "SECAM-G"},
{V4L2_STD_SECAM_H, "SECAM-H", "SECAM-H"},
{V4L2_STD_SECAM_DK, "SECAM-DK", "SECAM-DK"},
{V4L2_STD_SECAM_D, "SECAM-D", "SECAM-D"},
{V4L2_STD_SECAM_K, "SECAM-K", "SECAM-K"},
{V4L2_STD_SECAM_K1, "SECAM-K1", "SECAM-K1"},
{V4L2_STD_SECAM_L, "SECAM-L", "SECAM-L"},
{V4L2_STD_SECAM_LC, "SECAM-Lc", "SECAM-Lc"},
{0, NULL, NULL}
};
v4l2_tv_norm = g_enum_register_static ("V4L2_TV_norms", tv_norms);
}
return v4l2_tv_norm;
}
GType
gst_v4l2_io_mode_get_type (void)
{
static GType v4l2_io_mode = 0;
if (!v4l2_io_mode) {
static const GEnumValue io_modes[] = {
{GST_V4L2_IO_AUTO, "GST_V4L2_IO_AUTO", "auto"},
#ifndef USE_V4L2_TARGET_NV
{GST_V4L2_IO_RW, "GST_V4L2_IO_RW", "rw"},
#endif
{GST_V4L2_IO_MMAP, "GST_V4L2_IO_MMAP", "mmap"},
#ifndef USE_V4L2_TARGET_NV
{GST_V4L2_IO_USERPTR, "GST_V4L2_IO_USERPTR", "userptr"},
{GST_V4L2_IO_DMABUF, "GST_V4L2_IO_DMABUF", "dmabuf"},
#endif
{GST_V4L2_IO_DMABUF_IMPORT, "GST_V4L2_IO_DMABUF_IMPORT",
"dmabuf-import"},
{0, NULL, NULL}
};
#ifndef USE_V4L2_TARGET_NV
v4l2_io_mode = g_enum_register_static ("GstV4l2IOMode", io_modes);
#else
v4l2_io_mode = g_enum_register_static ("GstNvV4l2IOMode", io_modes);
#endif
}
return v4l2_io_mode;
}
void
gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class,
const char *default_device)
{
g_object_class_install_property (gobject_class, PROP_DEVICE,
g_param_spec_string ("device", "Device", "Device location",
default_device, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
g_param_spec_string ("device-name", "Device name",
"Name of the device", DEFAULT_PROP_DEVICE_NAME,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
g_param_spec_int ("device-fd", "File descriptor",
"File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FLAGS,
g_param_spec_flags ("flags", "Flags", "Device type flags",
GST_TYPE_V4L2_DEVICE_FLAGS, DEFAULT_PROP_FLAGS,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/**
* GstV4l2Src:brightness:
*
* Picture brightness, or more precisely, the black level
*/
g_object_class_install_property (gobject_class, PROP_BRIGHTNESS,
g_param_spec_int ("brightness", "Brightness",
"Picture brightness, or more precisely, the black level", G_MININT,
G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
/**
* GstV4l2Src:contrast:
*
* Picture contrast or luma gain
*/
g_object_class_install_property (gobject_class, PROP_CONTRAST,
g_param_spec_int ("contrast", "Contrast",
"Picture contrast or luma gain", G_MININT,
G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
/**
* GstV4l2Src:saturation:
*
* Picture color saturation or chroma gain
*/
g_object_class_install_property (gobject_class, PROP_SATURATION,
g_param_spec_int ("saturation", "Saturation",
"Picture color saturation or chroma gain", G_MININT,
G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
/**
* GstV4l2Src:hue:
*
* Hue or color balance
*/
g_object_class_install_property (gobject_class, PROP_HUE,
g_param_spec_int ("hue", "Hue",
"Hue or color balance", G_MININT,
G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
/**
* GstV4l2Src:norm:
*
* TV norm
*/
g_object_class_install_property (gobject_class, PROP_TV_NORM,
g_param_spec_enum ("norm", "TV norm",
"video standard",
GST_TYPE_V4L2_TV_NORM, DEFAULT_PROP_TV_NORM,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstV4l2Src:io-mode:
*
* IO Mode
*/
g_object_class_install_property (gobject_class, PROP_IO_MODE,
g_param_spec_enum ("io-mode", "IO mode",
"I/O mode",
GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstV4l2Src:extra-controls:
*
* Additional v4l2 controls for the device. The controls are identified
* by the control name (lowercase with '_' for any non-alphanumeric
* characters).
*
* Since: 1.2
*/
g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
g_param_spec_boxed ("extra-controls", "Extra Controls",
"Extra v4l2 controls (CIDs) for the device",
GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstV4l2Src:pixel-aspect-ratio:
*
* The pixel aspect ratio of the device. This overwrites the pixel aspect
* ratio queried from the device.
*
* Since: 1.2
*/
g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
g_param_spec_string ("pixel-aspect-ratio", "Pixel Aspect Ratio",
"Overwrite the pixel aspect ratio of the device", "1/1",
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstV4l2Src:force-aspect-ratio:
*
* When enabled, the pixel aspect ratio queried from the device or set
* with the pixel-aspect-ratio property will be enforced.
*
* Since: 1.2
*/
g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio",
"When enabled, the pixel aspect ratio will be enforced", TRUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
#ifdef USE_V4L2_TARGET_NV
void
gst_v4l2_object_install_m2m_dec_iomode_properties_helper (GObjectClass * gobject_class)
{
if (is_cuvid == FALSE) {
g_object_class_install_property (gobject_class, PROP_OUTPUT_IO_MODE,
g_param_spec_enum ("output-io-mode", "Output IO mode",
"Output side I/O mode (matches sink pad)",
GST_TYPE_V4L2_DEC_OUTPUT_IO_MODE, DEFAULT_PROP_IO_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CAPTURE_IO_MODE,
g_param_spec_enum ("capture-io-mode", "Capture IO mode",
"Capture I/O mode (matches src pad)",
GST_TYPE_V4L2_DEC_CAPTURE_IO_MODE, DEFAULT_PROP_IO_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
}
void
gst_v4l2_object_install_m2m_enc_iomode_properties_helper (GObjectClass * gobject_class)
{
if (is_cuvid == FALSE) {
g_object_class_install_property (gobject_class, PROP_OUTPUT_IO_MODE,
g_param_spec_enum ("output-io-mode", "Output IO mode",
"Output side I/O mode (matches sink pad)",
GST_TYPE_V4L2_ENC_OUTPUT_IO_MODE, DEFAULT_PROP_IO_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CAPTURE_IO_MODE,
g_param_spec_enum ("capture-io-mode", "Capture IO mode",
"Capture I/O mode (matches src pad)",
GST_TYPE_V4L2_ENC_CAPTURE_IO_MODE, DEFAULT_PROP_IO_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
}
#endif
void
gst_v4l2_object_install_m2m_properties_helper (GObjectClass * gobject_class)
{
g_object_class_install_property (gobject_class, PROP_DEVICE,
g_param_spec_string ("device", "Device", "Device location",
NULL, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
g_param_spec_string ("device-name", "Device name",
"Name of the device", DEFAULT_PROP_DEVICE_NAME,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
g_param_spec_int ("device-fd", "File descriptor",
"File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
if (is_cuvid == TRUE) {
g_object_class_install_property (gobject_class, PROP_OUTPUT_IO_MODE,
g_param_spec_enum ("output-io-mode", "Output IO mode",
"Output side I/O mode (matches sink pad)",
GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CAPTURE_IO_MODE,
g_param_spec_enum ("capture-io-mode", "Capture IO mode",
"Capture I/O mode (matches src pad)",
GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
g_param_spec_boxed ("extra-controls", "Extra Controls",
"Extra v4l2 controls (CIDs) for the device",
GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
/* Support for 32bit off_t, this wrapper is casting off_t to gint64 */
#ifdef HAVE_LIBV4L2
#if SIZEOF_OFF_T < 8
static gpointer
v4l2_mmap_wrapper (gpointer start, gsize length, gint prot, gint flags, gint fd,
off_t offset)
{
return v4l2_mmap (start, length, prot, flags, fd, (gint64) offset);
}
#define v4l2_mmap v4l2_mmap_wrapper
#endif /* SIZEOF_OFF_T < 8 */
#endif /* HAVE_LIBV4L2 */
GstV4l2Object *
gst_v4l2_object_new (GstElement * element,
GstObject * debug_object,
enum v4l2_buf_type type,
const char *default_device,
GstV4l2GetInOutFunction get_in_out_func,
GstV4l2SetInOutFunction set_in_out_func,
GstV4l2UpdateFpsFunction update_fps_func)
{
GstV4l2Object *v4l2object;
/*
* some default values
*/
v4l2object = g_new0 (GstV4l2Object, 1);
v4l2object->type = type;
v4l2object->formats = NULL;
v4l2object->element = element;
v4l2object->dbg_obj = debug_object;
v4l2object->get_in_out_func = get_in_out_func;
v4l2object->set_in_out_func = set_in_out_func;
v4l2object->update_fps_func = update_fps_func;
v4l2object->video_fd = -1;
v4l2object->active = FALSE;
v4l2object->videodev = g_strdup (default_device);
v4l2object->norms = NULL;
v4l2object->channels = NULL;
v4l2object->colors = NULL;
v4l2object->keep_aspect = TRUE;
v4l2object->n_v4l2_planes = 0;
v4l2object->no_initial_format = FALSE;
/* We now disable libv4l2 by default, but have an env to enable it. */
#ifdef HAVE_LIBV4L2
if (g_getenv ("GST_V4L2_USE_LIBV4L2")) {
v4l2object->fd_open = v4l2_fd_open;
v4l2object->close = v4l2_close;
v4l2object->dup = v4l2_dup;
v4l2object->ioctl = v4l2_ioctl;
v4l2object->read = v4l2_read;
v4l2object->mmap = v4l2_mmap;
v4l2object->munmap = v4l2_munmap;
} else
#endif
{
v4l2object->fd_open = NULL;
v4l2object->close = close;
v4l2object->dup = dup;
v4l2object->ioctl = ioctl;
v4l2object->read = read;
v4l2object->mmap = mmap;
v4l2object->munmap = munmap;
}
return v4l2object;
}
static gboolean gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object);
void
gst_v4l2_object_destroy (GstV4l2Object * v4l2object)
{
g_return_if_fail (v4l2object != NULL);
g_free (v4l2object->videodev);
g_free (v4l2object->channel);
if (v4l2object->formats) {
gst_v4l2_object_clear_format_list (v4l2object);
}
if (v4l2object->probed_caps) {
gst_caps_unref (v4l2object->probed_caps);
}
if (v4l2object->extra_controls) {
gst_structure_free (v4l2object->extra_controls);
}
g_free (v4l2object);
}
static gboolean
gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object)
{
g_slist_foreach (v4l2object->formats, (GFunc) g_free, NULL);
g_slist_free (v4l2object->formats);
v4l2object->formats = NULL;
return TRUE;
}
static gint
gst_v4l2_object_prop_to_cid (guint prop_id)
{
gint cid = -1;
switch (prop_id) {
case PROP_BRIGHTNESS:
cid = V4L2_CID_BRIGHTNESS;
break;
case PROP_CONTRAST:
cid = V4L2_CID_CONTRAST;
break;
case PROP_SATURATION:
cid = V4L2_CID_SATURATION;
break;
case PROP_HUE:
cid = V4L2_CID_HUE;
break;
default:
GST_WARNING ("unmapped property id: %d", prop_id);
}
return cid;
}
gboolean
gst_v4l2_object_set_property_helper (GstV4l2Object * v4l2object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
switch (prop_id) {
case PROP_DEVICE:
g_free (v4l2object->videodev);
v4l2object->videodev = g_value_dup_string (value);
break;
case PROP_BRIGHTNESS:
case PROP_CONTRAST:
case PROP_SATURATION:
case PROP_HUE:
{
gint cid = gst_v4l2_object_prop_to_cid (prop_id);
if (cid != -1) {
if (GST_V4L2_IS_OPEN (v4l2object)) {
gst_v4l2_set_attribute (v4l2object, cid, g_value_get_int (value));
}
}
return TRUE;
}
break;
case PROP_TV_NORM:
v4l2object->tv_norm = g_value_get_enum (value);
break;
#ifndef USE_V4L2_TARGET_NV
case PROP_CHANNEL:
if (GST_V4L2_IS_OPEN (v4l2object)) {
GstTuner *tuner = GST_TUNER (v4l2object->element);
GstTunerChannel *channel = gst_tuner_find_channel_by_name (tuner,
(gchar *) g_value_get_string (value));
if (channel) {
/* like gst_tuner_set_channel (tuner, channel)
without g_object_notify */
gst_v4l2_tuner_set_channel (v4l2object, channel);
}
} else {
g_free (v4l2object->channel);
v4l2object->channel = g_value_dup_string (value);
}
break;
case PROP_FREQUENCY:
if (GST_V4L2_IS_OPEN (v4l2object)) {
GstTuner *tuner = GST_TUNER (v4l2object->element);
GstTunerChannel *channel = gst_tuner_get_channel (tuner);
if (channel &&
GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
/* like
gst_tuner_set_frequency (tuner, channel, g_value_get_ulong (value))
without g_object_notify */
gst_v4l2_tuner_set_frequency (v4l2object, channel,
g_value_get_ulong (value));
}
} else {
v4l2object->frequency = g_value_get_ulong (value);
}
break;
#endif
case PROP_IO_MODE:
v4l2object->req_mode = g_value_get_enum (value);
break;
case PROP_CAPTURE_IO_MODE:
g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
v4l2object->req_mode = g_value_get_enum (value);
break;
case PROP_OUTPUT_IO_MODE:
g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
v4l2object->req_mode = g_value_get_enum (value);
break;
case PROP_EXTRA_CONTROLS:{
const GstStructure *s = gst_value_get_structure (value);
if (v4l2object->extra_controls)
gst_structure_free (v4l2object->extra_controls);
v4l2object->extra_controls = s ? gst_structure_copy (s) : NULL;
if (GST_V4L2_IS_OPEN (v4l2object))
gst_v4l2_set_controls (v4l2object, v4l2object->extra_controls);
break;
}
case PROP_PIXEL_ASPECT_RATIO:
if (v4l2object->par) {
g_value_unset (v4l2object->par);
g_free (v4l2object->par);
}
v4l2object->par = g_new0 (GValue, 1);
g_value_init (v4l2object->par, GST_TYPE_FRACTION);
if (!g_value_transform (value, v4l2object->par)) {
g_warning ("Could not transform string to aspect ratio");
gst_value_set_fraction (v4l2object->par, 1, 1);
}
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "set PAR to %d/%d",
gst_value_get_fraction_numerator (v4l2object->par),
gst_value_get_fraction_denominator (v4l2object->par));
break;
case PROP_FORCE_ASPECT_RATIO:
v4l2object->keep_aspect = g_value_get_boolean (value);
break;
default:
return FALSE;
break;
}
return TRUE;
}
gboolean
gst_v4l2_object_get_property_helper (GstV4l2Object * v4l2object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
switch (prop_id) {
case PROP_DEVICE:
g_value_set_string (value, v4l2object->videodev);
break;
case PROP_DEVICE_NAME:
{
const guchar *new = NULL;
if (GST_V4L2_IS_OPEN (v4l2object)) {
new = v4l2object->vcap.card;
} else if (gst_v4l2_open (v4l2object)) {
new = v4l2object->vcap.card;
gst_v4l2_close (v4l2object);
}
g_value_set_string (value, (gchar *) new);
break;
}
case PROP_DEVICE_FD:
{
if (GST_V4L2_IS_OPEN (v4l2object))
g_value_set_int (value, v4l2object->video_fd);
else
g_value_set_int (value, DEFAULT_PROP_DEVICE_FD);
break;
}
case PROP_FLAGS:
{
guint flags = 0;
if (GST_V4L2_IS_OPEN (v4l2object)) {
flags |= v4l2object->device_caps &
(V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_VIDEO_OUTPUT |
V4L2_CAP_VIDEO_OVERLAY |
V4L2_CAP_VBI_CAPTURE |
V4L2_CAP_VBI_OUTPUT | V4L2_CAP_TUNER | V4L2_CAP_AUDIO);
if (v4l2object->device_caps & V4L2_CAP_VIDEO_CAPTURE_MPLANE)
flags |= V4L2_CAP_VIDEO_CAPTURE;
if (v4l2object->device_caps & V4L2_CAP_VIDEO_OUTPUT_MPLANE)
flags |= V4L2_CAP_VIDEO_OUTPUT;
}
g_value_set_flags (value, flags);
break;
}
case PROP_BRIGHTNESS:
case PROP_CONTRAST:
case PROP_SATURATION:
case PROP_HUE:
{
gint cid = gst_v4l2_object_prop_to_cid (prop_id);
if (cid != -1) {
if (GST_V4L2_IS_OPEN (v4l2object)) {
gint v;
if (gst_v4l2_get_attribute (v4l2object, cid, &v)) {
g_value_set_int (value, v);
}
}
}
return TRUE;
}
break;
case PROP_TV_NORM:
g_value_set_enum (value, v4l2object->tv_norm);
break;
case PROP_IO_MODE:
g_value_set_enum (value, v4l2object->req_mode);
break;
case PROP_CAPTURE_IO_MODE:
g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
g_value_set_enum (value, v4l2object->req_mode);
break;
case PROP_OUTPUT_IO_MODE:
g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
g_value_set_enum (value, v4l2object->req_mode);
break;
case PROP_EXTRA_CONTROLS:
gst_value_set_structure (value, v4l2object->extra_controls);
break;
case PROP_PIXEL_ASPECT_RATIO:
if (v4l2object->par)
g_value_transform (v4l2object->par, value);
break;
case PROP_FORCE_ASPECT_RATIO:
g_value_set_boolean (value, v4l2object->keep_aspect);
break;
default:
return FALSE;
break;
}
return TRUE;
}
static void
gst_v4l2_get_driver_min_buffers (GstV4l2Object * v4l2object)
{
struct v4l2_control control = { 0, };
g_return_if_fail (GST_V4L2_IS_OPEN (v4l2object));
if (V4L2_TYPE_IS_OUTPUT (v4l2object->type))
control.id = V4L2_CID_MIN_BUFFERS_FOR_OUTPUT;
else
control.id = V4L2_CID_MIN_BUFFERS_FOR_CAPTURE;
if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CTRL, &control) == 0) {
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
"driver requires a minimum of %d buffers", control.value);
v4l2object->min_buffers = control.value;
} else {
v4l2object->min_buffers = 0;
}
}
#ifndef USE_V4L2_TARGET_NV
static void
gst_v4l2_set_defaults (GstV4l2Object * v4l2object)
{
GstTunerNorm *norm = NULL;
GstTunerChannel *channel = NULL;
GstTuner *tuner;
if (!GST_IS_TUNER (v4l2object->element))
return;
tuner = GST_TUNER (v4l2object->element);
if (v4l2object->tv_norm)
norm = gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "tv_norm=0x%" G_GINT64_MODIFIER "x, "
"norm=%p", (guint64) v4l2object->tv_norm, norm);
if (norm) {
gst_tuner_set_norm (tuner, norm);
} else {
norm =
GST_TUNER_NORM (gst_tuner_get_norm (GST_TUNER (v4l2object->element)));
if (norm) {
v4l2object->tv_norm =
gst_v4l2_tuner_get_std_id_by_norm (v4l2object, norm);
gst_tuner_norm_changed (tuner, norm);
}
}
if (v4l2object->channel)
channel = gst_tuner_find_channel_by_name (tuner, v4l2object->channel);
if (channel) {
gst_tuner_set_channel (tuner, channel);
} else {
channel =
GST_TUNER_CHANNEL (gst_tuner_get_channel (GST_TUNER
(v4l2object->element)));
if (channel) {
g_free (v4l2object->channel);
v4l2object->channel = g_strdup (channel->label);
gst_tuner_channel_changed (tuner, channel);
}
}
if (channel
&& GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
if (v4l2object->frequency != 0) {
gst_tuner_set_frequency (tuner, channel, v4l2object->frequency);
} else {
v4l2object->frequency = gst_tuner_get_frequency (tuner, channel);
if (v4l2object->frequency == 0) {
/* guess */
gst_tuner_set_frequency (tuner, channel, 1000);
} else {
}
}
}
}
#endif
gboolean
gst_v4l2_object_open (GstV4l2Object * v4l2object)
{
#ifndef USE_V4L2_TARGET_NV
if (gst_v4l2_open (v4l2object))
gst_v4l2_set_defaults (v4l2object);
else
return FALSE;
#else
if (!gst_v4l2_open (v4l2object))
return FALSE;
v4l2object->is_encode = !g_strcmp0(v4l2object->videodev, V4L2_DEVICE_PATH_NVENC)
|| !g_strcmp0(v4l2object->videodev, V4L2_DEVICE_PATH_NVENC_ALT);
#endif
return TRUE;
}
gboolean
gst_v4l2_object_open_shared (GstV4l2Object * v4l2object, GstV4l2Object * other)
{
gboolean ret;
ret = gst_v4l2_dup (v4l2object, other);
return ret;
}
gboolean
gst_v4l2_object_close (GstV4l2Object * v4l2object)
{
if (!gst_v4l2_close (v4l2object))
return FALSE;
gst_caps_replace (&v4l2object->probed_caps, NULL);
/* reset our copy of the device caps */
v4l2object->device_caps = 0;