kmsgrab.c File Reference

#include <fcntl.h>
#include <unistd.h>
#include <drm.h>
#include <drm_fourcc.h>
#include <drm_mode.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_drm.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixfmt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/time.h"
#include "libavformat/avformat.h"
#include "libavformat/demux.h"
#include "libavformat/internal.h"

Go to the source code of this file.

Data Structures
struct	KMSGrabContext

Macros
#define	DRM_FORMAT_MOD_INVALID   ((1ULL << 56) - 1)
#define	OFFSET(x)   offsetof(KMSGrabContext, x)
#define	FLAGS   AV_OPT_FLAG_DECODING_PARAM

Functions
static void	kmsgrab_free_desc (void *opaque, uint8_t *data)
static void	kmsgrab_free_frame (void *opaque, uint8_t *data)
static int	kmsgrab_get_fb (AVFormatContext *avctx, drmModePlane *plane, AVDRMFrameDescriptor *desc)
static int	kmsgrab_read_packet (AVFormatContext *avctx, AVPacket *pkt)
static av_cold int	kmsgrab_read_header (AVFormatContext *avctx)
static av_cold int	kmsgrab_read_close (AVFormatContext *avctx)

Variables
struct {
enum AVPixelFormat   pixfmt
uint32_t   drm_format
}	kmsgrab_formats []
static const AVOption	options []
static const AVClass	kmsgrab_class
const FFInputFormat	ff_kmsgrab_demuxer

Macro Definition Documentation

DRM_FORMAT_MOD_INVALID

#define DRM_FORMAT_MOD_INVALID   ((1ULL << 56) - 1)

Definition at line 32 of file kmsgrab.c.

OFFSET

#define OFFSET

(

x

)

offsetof(KMSGrabContext, x)

Definition at line 681 of file kmsgrab.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_DECODING_PARAM

Definition at line 682 of file kmsgrab.c.

Function Documentation

kmsgrab_free_desc()

static void kmsgrab_free_desc ( void *  opaque, uint8_t *  data  )

static

Definition at line 76 of file kmsgrab.c.

Referenced by kmsgrab_read_packet().

kmsgrab_free_frame()

static void kmsgrab_free_frame ( void *  opaque, uint8_t *  data  )

static

Definition at line 87 of file kmsgrab.c.

Referenced by kmsgrab_read_packet().

kmsgrab_get_fb()

static int kmsgrab_get_fb ( AVFormatContext *  avctx, drmModePlane *  plane, AVDRMFrameDescriptor *  desc  )

static

Definition at line 94 of file kmsgrab.c.

Referenced by kmsgrab_read_packet().

kmsgrab_read_packet()

static int kmsgrab_read_packet ( AVFormatContext *  avctx, AVPacket *  pkt  )

static

Definition at line 264 of file kmsgrab.c.

kmsgrab_read_header()

static av_cold int kmsgrab_read_header ( AVFormatContext *  avctx )

static

Definition at line 410 of file kmsgrab.c.

kmsgrab_read_close()

static av_cold int kmsgrab_read_close ( AVFormatContext *  avctx )

static

Definition at line 671 of file kmsgrab.c.

Variable Documentation

pixfmt

enum AVPixelFormat pixfmt

Definition at line 367 of file kmsgrab.c.

Referenced by alloc_frame(), av_vkfmt_from_pixfmt(), fill_iplimage_from_frame(), is_native_endian(), kmsgrab_read_header(), libplacebo_query_format(), match_pixfmt(), opencl_get_plane_format(), rfc4175_parse_format(), v4l2_get_raw_format(), v4l2_try_raw_format(), vk_find_format_entry(), vkfmt_from_pixfmt2(), vt_pool_alloc(), and vulkan_frames_get_constraints().

drm_format

uint32_t drm_format

Definition at line 368 of file kmsgrab.c.

Referenced by kmsgrab_read_header().

kmsgrab_formats

const { ... } kmsgrab_formats[]

Referenced by kmsgrab_read_header().

options

const AVOption options[]

static

Initial value:

= {
    { "device", "DRM device path",
      OFFSET(device_path), AV_OPT_TYPE_STRING,
      { .str = "/dev/dri/card0" }, 0, 0, FLAGS },
    { "format", "Pixel format for framebuffer",
      OFFSET(format), AV_OPT_TYPE_PIXEL_FMT,
      { .i64 = AV_PIX_FMT_NONE }, -1, INT32_MAX, FLAGS },
    { "format_modifier", "DRM format modifier for framebuffer",
      OFFSET(drm_format_modifier), AV_OPT_TYPE_INT64,
      { .i64 = DRM_FORMAT_MOD_INVALID }, 0, INT64_MAX, FLAGS },
    { "crtc_id", "CRTC ID to define capture source",
      OFFSET(source_crtc), AV_OPT_TYPE_INT64,
      { .i64 = 0 }, 0, UINT32_MAX, FLAGS },
    { "plane_id", "Plane ID to define capture source",
      OFFSET(source_plane), AV_OPT_TYPE_INT64,
      { .i64 = 0 }, 0, UINT32_MAX, FLAGS },
    { "framerate", "Framerate to capture at",
      OFFSET(framerate), AV_OPT_TYPE_RATIONAL,
      { .dbl = 30.0 }, 0, 1000, FLAGS },
    { NULL },
}

Definition at line 683 of file kmsgrab.c.

kmsgrab_class

const AVClass kmsgrab_class

static

Initial value:

= {
    .class_name = "kmsgrab indev",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
    .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT,
}

Definition at line 705 of file kmsgrab.c.

ff_kmsgrab_demuxer

const FFInputFormat ff_kmsgrab_demuxer

Initial value:

= {
    .p.name         = "kmsgrab",
    .p.long_name    = NULL_IF_CONFIG_SMALL("KMS screen capture"),
    .p.flags        = AVFMT_NOFILE,
    .p.priv_class   = &kmsgrab_class,
    .priv_data_size = sizeof(KMSGrabContext),
    .read_header    = &kmsgrab_read_header,
    .read_packet    = &kmsgrab_read_packet,
    .read_close     = &kmsgrab_read_close,
}

Definition at line 713 of file kmsgrab.c.