xv.c File Reference

XVideo output device. More...

#include <X11/Xlib.h>
#include <X11/extensions/Xv.h>
#include <X11/extensions/XShm.h>
#include <X11/extensions/Xvlib.h>
#include <sys/shm.h>
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavformat/internal.h"
#include "avdevice.h"

Go to the source code of this file.

Data Structures
struct	XVContext
struct	XVTagFormatMap

Macros
#define	OFFSET(x)   offsetof(XVContext, x)

Functions
static int	xv_get_tag_from_format (enum AVPixelFormat format)
static int	xv_write_trailer (AVFormatContext *s)
static int	xv_write_header (AVFormatContext *s)
static void	compute_display_area (AVFormatContext *s)
static int	xv_repaint (AVFormatContext *s)
static int	write_picture (AVFormatContext *s, uint8_t *input_data[4], int linesize[4])
static int	xv_write_packet (AVFormatContext *s, AVPacket *pkt)
static int	xv_write_frame (AVFormatContext *s, int stream_index, AVFrame **frame, unsigned flags)
static int	xv_control_message (AVFormatContext *s, int type, void *data, size_t data_size)

Variables
static const XVTagFormatMap	tag_codec_map []
static const AVOption	options []
static const AVClass	xv_class
AVOutputFormat	ff_xv_muxer

Detailed Description

XVideo output device.

TODO:

• add support to more formats

Definition in file xv.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(XVContext, x)

Definition at line 353 of file xv.c.

Function Documentation

xv_get_tag_from_format()

static int xv_get_tag_from_format ( enum AVPixelFormat  format )

static

Definition at line 77 of file xv.c.

Referenced by xv_write_header().

xv_write_trailer()

static int xv_write_trailer ( AVFormatContext *  s )

static

Definition at line 88 of file xv.c.

Referenced by xv_write_header().

xv_write_header()

static int xv_write_header ( AVFormatContext *  s )

static

Definition at line 103 of file xv.c.

compute_display_area()

static void compute_display_area ( AVFormatContext *  s )

static

Definition at line 226 of file xv.c.

Referenced by xv_repaint().

xv_repaint()

static int xv_repaint ( AVFormatContext *  s )

static

Definition at line 256 of file xv.c.

Referenced by write_picture(), and xv_control_message().

write_picture()

static int write_picture ( AVFormatContext *  s, uint8_t *  input_data[4], int  linesize[4]  )

static

Definition at line 294 of file xv.c.

Referenced by xv_write_frame(), and xv_write_packet().

xv_write_packet()

static int xv_write_packet ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 322 of file xv.c.

xv_write_frame()

static int xv_write_frame ( AVFormatContext *  s, int  stream_index, AVFrame **  frame, unsigned  flags  )

static

Definition at line 333 of file xv.c.

xv_control_message()

static int xv_control_message ( AVFormatContext *  s, int  type, void *  data, size_t  data_size  )

static

Definition at line 342 of file xv.c.

Variable Documentation

tag_codec_map

const XVTagFormatMap tag_codec_map[]

static

Initial value:

= {
    { MKTAG('I','4','2','0'), AV_PIX_FMT_YUV420P },
    { MKTAG('U','Y','V','Y'), AV_PIX_FMT_UYVY422 },
    { MKTAG('Y','U','Y','2'), AV_PIX_FMT_YUYV422 },
    { 0,                      AV_PIX_FMT_NONE }
}

Definition at line 70 of file xv.c.

Referenced by xv_get_tag_from_format().

options

const AVOption options[]

static

Initial value:

= {
    { "display_name", "set display name",       OFFSET(display_name), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
    { "window_id",    "set existing window id", OFFSET(window_id),    AV_OPT_TYPE_INT64,  {.i64 = 0 }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM },
    { "window_size",  "set window forced size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
    { "window_title", "set window title",       OFFSET(window_title), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
    { "window_x",     "set window x offset",    OFFSET(window_x),     AV_OPT_TYPE_INT,    {.i64 = 0 }, -INT_MAX, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
    { "window_y",     "set window y offset",    OFFSET(window_y),     AV_OPT_TYPE_INT,    {.i64 = 0 }, -INT_MAX, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
    { NULL }

}

Definition at line 354 of file xv.c.

xv_class

const AVClass xv_class

static

Initial value:

= {
    .class_name = "xvideo outdev",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
    .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
}

Definition at line 365 of file xv.c.

ff_xv_muxer

AVOutputFormat ff_xv_muxer

Initial value:

= {
    .name           = "xv",
    .long_name      = NULL_IF_CONFIG_SMALL("XV (XVideo) output device"),
    .priv_data_size = sizeof(XVContext),
    .audio_codec    = AV_CODEC_ID_NONE,
    .video_codec    = AV_CODEC_ID_RAWVIDEO,
    .write_header   = xv_write_header,
    .write_packet   = xv_write_packet,
    .write_uncoded_frame = xv_write_frame,
    .write_trailer  = xv_write_trailer,
    .control_message = xv_control_message,
    .flags          = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
    .priv_class     = &xv_class,
}

Definition at line 373 of file xv.c.