FFmpeg
Data Structures | Macros | Functions | Variables
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/opt.h"
#include "libavutil/pixfmt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/time.h"
#include "libavformat/avformat.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
 
AVInputFormat ff_kmsgrab_demuxer
 

Macro Definition Documentation

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

Definition at line 32 of file kmsgrab.c.

Referenced by kmsgrab_read_header(), and vaapi_map_to_memory().

#define OFFSET (   x)    offsetof(KMSGrabContext, x)

Definition at line 678 of file kmsgrab.c.

#define FLAGS   AV_OPT_FLAG_DECODING_PARAM

Definition at line 679 of file kmsgrab.c.

Function Documentation

static void kmsgrab_free_desc ( void opaque,
uint8_t data 
)
static

Definition at line 74 of file kmsgrab.c.

Referenced by kmsgrab_read_packet().

static void kmsgrab_free_frame ( void opaque,
uint8_t data 
)
static

Definition at line 85 of file kmsgrab.c.

Referenced by kmsgrab_read_packet().

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

Definition at line 92 of file kmsgrab.c.

Referenced by kmsgrab_read_packet().

static int kmsgrab_read_packet ( AVFormatContext avctx,
AVPacket pkt 
)
static

Definition at line 265 of file kmsgrab.c.

static av_cold int kmsgrab_read_header ( AVFormatContext avctx)
static

Definition at line 410 of file kmsgrab.c.

static av_cold int kmsgrab_read_close ( AVFormatContext avctx)
static

Definition at line 668 of file kmsgrab.c.

Variable Documentation

enum AVPixelFormat pixfmt
uint32_t drm_format

Definition at line 368 of file kmsgrab.c.

const { ... } kmsgrab_formats[]

Referenced by kmsgrab_read_header().

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",
{ .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",
{ .dbl = 30.0 }, 0, 1000, FLAGS },
{ NULL },
}
#define NULL
Definition: coverity.c:32
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample format(the sample packing is implied by the sample format) and sample rate.The lists are not just lists
int framerate
Definition: h264_levels.c:65
#define OFFSET(x)
Definition: kmsgrab.c:678
#define DRM_FORMAT_MOD_INVALID
Definition: kmsgrab.c:32
#define FLAGS
Definition: kmsgrab.c:679

Definition at line 680 of file kmsgrab.c.

const AVClass kmsgrab_class
static
Initial value:
= {
.class_name = "kmsgrab indev",
.item_name = av_default_item_name,
.option = options,
}
static const AVOption options[]
Definition: kmsgrab.c:680
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235

Definition at line 702 of file kmsgrab.c.

AVInputFormat ff_kmsgrab_demuxer
Initial value:
= {
.name = "kmsgrab",
.long_name = NULL_IF_CONFIG_SMALL("KMS screen capture"),
.priv_data_size = sizeof(KMSGrabContext),
.priv_class = &kmsgrab_class,
}
static const AVClass kmsgrab_class
Definition: kmsgrab.c:702
static int kmsgrab_read_packet(AVFormatContext *avctx, AVPacket *pkt)
Definition: kmsgrab.c:265
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
static av_cold int kmsgrab_read_close(AVFormatContext *avctx)
Definition: kmsgrab.c:668
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:527
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
#define flags(name, subs,...)
Definition: cbs_av1.c:560
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
static av_cold int kmsgrab_read_header(AVFormatContext *avctx)
Definition: kmsgrab.c:410

Definition at line 710 of file kmsgrab.c.