v4l.c File Reference

#include "avdevice.h"
#include "config.h"
#include "libavutil/rational.h"
#include "libavutil/imgutils.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavformat/internal.h"
#include "libavcodec/dsputil.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <linux/videodev.h>
#include <time.h>

Go to the source code of this file.

Data Structures
struct	VideoData

Macros
#define	_LINUX_TIME_H   1

Functions
static int	grab_read_header (AVFormatContext *s1, AVFormatParameters *ap)
static int	v4l_mm_read_picture (VideoData *s, uint8_t *buf)
static int	grab_read_packet (AVFormatContext *s1, AVPacket *pkt)
static int	grab_read_close (AVFormatContext *s1)

Variables
struct {
int   palette
int   depth
enum AVPixelFormat   pix_fmt
}	video_formats []
static const AVOption	options []
static const AVClass	v4l_class
AVInputFormat	ff_v4l_demuxer

Macro Definition Documentation

#define _LINUX_TIME_H   1

Definition at line 37 of file v4l.c.

Function Documentation

static int grab_read_header ( AVFormatContext *  s1, AVFormatParameters *  ap  )

static

Definition at line 76 of file v4l.c.

static int v4l_mm_read_picture ( VideoData *  s, uint8_t *  buf  )

static

Definition at line 257 of file v4l.c.

Referenced by grab_read_packet().

static int grab_read_packet ( AVFormatContext *  s1, AVPacket *  pkt  )

static

Definition at line 283 of file v4l.c.

static int grab_read_close ( AVFormatContext *  s1 )

static

Definition at line 323 of file v4l.c.

Variable Documentation

int palette

Definition at line 61 of file v4l.c.

Referenced by avs_read_packet(), cdg_load_palette(), cmap_read_palette(), count_colors(), decode_frame(), encode_frame(), extract_header(), flush_packet(), gif_encode_frame(), gif_write_header(), idcin_read_packet(), palToRgbWrapper(), seqvideo_decode(), set_palette(), smush_read_header(), and yop_decode_frame().

int depth

Definition at line 62 of file v4l.c.

Referenced by ast_read_header(), av_read_image_line(), av_write_image_line(), bmp_decode_frame(), decode_frame(), decode_macroblock(), denoise_spatial(), dvbsub_parse_clut_segment(), encode_frame(), ff_pnm_decode_header(), fill_iplimage_from_frame(), filter(), flic_decode_init(), guess_mv(), pam_encode_frame(), query_formats(), sunrast_decode_frame(), targa_decode_rle(), tta_decode_frame(), txd_decode_frame(), unpack_codebook(), and wtvfile_open2().

enum AVPixelFormat pix_fmt

Definition at line 63 of file v4l.c.

Referenced by av_get_pix_fmt(), av_get_pix_fmt_name(), av_get_pix_fmt_string(), av_pix_fmt_desc_get(), dc1394_read_common(), device_init(), dshow_cycle_formats(), fbdev_read_header(), ff_parse_pixel_format(), get_pix_fmt_internal(), img_read_header(), init(), list_formats(), load_mask(), main(), make_format_list(), query_formats(), rawvideo_read_header(), sdl_write_header(), show_pix_fmts(), sws_isSupportedEndiannessConversion(), sws_isSupportedInput(), sws_isSupportedOutput(), v4l2_read_header(), xwd_encode_frame(), and yuv4_read_header().

struct { ... } video_formats[]

Initial value:

= {
    {.palette = VIDEO_PALETTE_YUV420P, .depth = 12, .pix_fmt = AV_PIX_FMT_YUV420P },
    {.palette = VIDEO_PALETTE_YUV422,  .depth = 16, .pix_fmt = AV_PIX_FMT_YUYV422 },
    {.palette = VIDEO_PALETTE_UYVY,    .depth = 16, .pix_fmt = AV_PIX_FMT_UYVY422 },
    {.palette = VIDEO_PALETTE_YUYV,    .depth = 16, .pix_fmt = AV_PIX_FMT_YUYV422 },
    
    {.palette = VIDEO_PALETTE_RGB24,   .depth = 24, .pix_fmt = AV_PIX_FMT_BGR24   },
    {.palette = VIDEO_PALETTE_RGB565,  .depth = 16, .pix_fmt = AV_PIX_FMT_BGR565  },
    {.palette = VIDEO_PALETTE_GREY,    .depth = 8,  .pix_fmt = AV_PIX_FMT_GRAY8   },
}

Referenced by grab_read_header().

const AVOption options[]

static

Initial value:

= {
    { "standard", "", 0x42, AV_OPT_TYPE_INT, {.i64 = VIDEO_MODE_NTSC}, VIDEO_MODE_PAL, VIDEO_MODE_NTSC, AV_OPT_FLAG_DECODING_PARAM, "standard" },
    { "PAL",   "", 0, AV_OPT_TYPE_CONST, {.i64 = VIDEO_MODE_PAL},   0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
    { "SECAM", "", 0, AV_OPT_TYPE_CONST, {.i64 = VIDEO_MODE_SECAM}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
    { "NTSC",  "", 0, AV_OPT_TYPE_CONST, {.i64 = VIDEO_MODE_NTSC},  0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
    { NULL },
}

Definition at line 339 of file v4l.c.

const AVClass v4l_class

static

Initial value:

= {
    .class_name = "V4L indev",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 347 of file v4l.c.

AVInputFormat ff_v4l_demuxer

Initial value:

= {
    .name           = "video4linux,v4l",
    .long_name      = NULL_IF_CONFIG_SMALL("Video4Linux device grab"),
    .priv_data_size = sizeof(VideoData),
    .read_header    = grab_read_header,
    .read_packet    = grab_read_packet,
    .read_close     = grab_read_close,
    .flags          = AVFMT_NOFILE,
    .priv_class     = &v4l_class,
}

Definition at line 354 of file v4l.c.