img2dec.c File Reference

#include <sys/stat.h>
#include "libavutil/avstring.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/parseutils.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "img2.h"
#include "libavcodec/mjpeg.h"

Go to the source code of this file.

Macros
#define	_DEFAULT_SOURCE
#define	_BSD_SOURCE
#define	OFFSET(x)   offsetof(VideoDemuxData, x)
#define	DEC   AV_OPT_FLAG_DECODING_PARAM
#define	IMAGEAUTO_DEMUXER(imgname, codecid)

Functions
static int	infer_size (int *width_ptr, int *height_ptr, int size)
static int	is_glob (const char *path)
static int	find_image_range (AVIOContext *pb, int *pfirst_index, int *plast_index, const char *path, int start_index, int start_index_range)
	Get index range of image files matched by path. More...
static int	img_read_probe (AVProbeData *p)
int	ff_img_read_header (AVFormatContext *s1)
int	ff_img_read_packet (AVFormatContext *s1, AVPacket *pkt)
static int	img_read_close (struct AVFormatContext *s1)
static int	img_read_seek (AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
static int	bmp_probe (AVProbeData *p)
static int	dds_probe (AVProbeData *p)
static int	dpx_probe (AVProbeData *p)
static int	exr_probe (AVProbeData *p)
static int	j2k_probe (AVProbeData *p)
static int	jpeg_probe (AVProbeData *p)
static int	jpegls_probe (AVProbeData *p)
static int	pcx_probe (AVProbeData *p)
static int	qdraw_probe (AVProbeData *p)
static int	pictor_probe (AVProbeData *p)
static int	png_probe (AVProbeData *p)
static int	sgi_probe (AVProbeData *p)
static int	sunrast_probe (AVProbeData *p)
static int	tiff_probe (AVProbeData *p)
static int	webp_probe (AVProbeData *p)
static int	pnm_magic_check (const AVProbeData *p, int magic)
static int	pnm_probe (const AVProbeData *p)
static int	pbm_probe (AVProbeData *p)
static int	pgmx_probe (AVProbeData *p)
static int	pgm_probe (AVProbeData *p)
static int	pgmyuv_probe (AVProbeData *p)
static int	ppm_probe (AVProbeData *p)
static int	pam_probe (AVProbeData *p)

Variables
static const int	sizes [][2]
const AVOption	ff_img_options []

Macro Definition Documentation

#define _DEFAULT_SOURCE

Definition at line 23 of file img2dec.c.

#define _BSD_SOURCE

Definition at line 24 of file img2dec.c.

#define OFFSET

(

x

)

offsetof(VideoDemuxData, x)

Definition at line 561 of file img2dec.c.

#define DEC   AV_OPT_FLAG_DECODING_PARAM

Definition at line 562 of file img2dec.c.

#define IMAGEAUTO_DEMUXER	(		imgname,
			codecid
	)

Value:

static const AVClass imgname ## _class = {\
    .class_name = AV_STRINGIFY(imgname) " demuxer",\
    .item_name  = av_default_item_name,\
    .option     = ff_img_options,\
    .version    = LIBAVUTIL_VERSION_INT,\
};\
AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\
    .name           = AV_STRINGIFY(imgname) "_pipe",\
    .long_name      = NULL_IF_CONFIG_SMALL("piped " AV_STRINGIFY(imgname) " sequence"),\
    .priv_data_size = sizeof(VideoDemuxData),\
    .read_probe     = imgname ## _probe,\
    .read_header    = ff_img_read_header,\
    .read_packet    = ff_img_read_packet,\
    .priv_class     = & imgname ## _class,\
    .flags          = AVFMT_GENERIC_INDEX, \
    .raw_codec_id   = codecid,\
};

Definition at line 915 of file img2dec.c.

Function Documentation

static int infer_size ( int *  width_ptr, int *  height_ptr, int  size  )

static

Definition at line 62 of file img2dec.c.

Referenced by ff_img_read_packet().

static int is_glob ( const char *  path )

static

Definition at line 77 of file img2dec.c.

Referenced by ff_img_read_header(), and img_read_probe().

static int find_image_range ( AVIOContext *  pb, int *  pfirst_index, int *  plast_index, const char *  path, int  start_index, int  start_index_range  )

static

Get index range of image files matched by path.

Parameters

pfirst_index	pointer to index updated with the first number in the range
plast_index	pointer to index updated with the last number in the range
path	path which has to be matched by the image files in the range
start_index	minimum accepted value for the first index in the range

Returns

-1 if no image file could be found

Definition at line 107 of file img2dec.c.

Referenced by ff_img_read_header().

static int img_read_probe ( AVProbeData *  p )

static

Definition at line 160 of file img2dec.c.

int ff_img_read_header

(

AVFormatContext *

s1

)

Definition at line 179 of file img2dec.c.

int ff_img_read_packet	(	AVFormatContext *	s1,
		AVPacket *	pkt
	)

Definition at line 372 of file img2dec.c.

static int img_read_close ( struct AVFormatContext *  s1 )

static

Definition at line 530 of file img2dec.c.

static int img_read_seek ( AVFormatContext *  s, int  stream_index, int64_t  timestamp, int  flags  )

static

Definition at line 541 of file img2dec.c.

static int bmp_probe ( AVProbeData *  p )

static

Definition at line 622 of file img2dec.c.

static int dds_probe ( AVProbeData *  p )

static

Definition at line 640 of file img2dec.c.

static int dpx_probe ( AVProbeData *  p )

static

Definition at line 651 of file img2dec.c.

static int exr_probe ( AVProbeData *  p )

static

Definition at line 669 of file img2dec.c.

static int j2k_probe ( AVProbeData *  p )

static

Definition at line 678 of file img2dec.c.

static int jpeg_probe ( AVProbeData *  p )

static

Definition at line 688 of file img2dec.c.

static int jpegls_probe ( AVProbeData *  p )

static

Definition at line 760 of file img2dec.c.

static int pcx_probe ( AVProbeData *  p )

static

Definition at line 769 of file img2dec.c.

static int qdraw_probe ( AVProbeData *  p )

static

Definition at line 790 of file img2dec.c.

static int pictor_probe ( AVProbeData *  p )

static

Definition at line 806 of file img2dec.c.

static int png_probe ( AVProbeData *  p )

static

Definition at line 815 of file img2dec.c.

static int sgi_probe ( AVProbeData *  p )

static

Definition at line 824 of file img2dec.c.

static int sunrast_probe ( AVProbeData *  p )

static

Definition at line 836 of file img2dec.c.

static int tiff_probe ( AVProbeData *  p )

static

Definition at line 845 of file img2dec.c.

static int webp_probe ( AVProbeData *  p )

static

Definition at line 855 of file img2dec.c.

static int pnm_magic_check ( const AVProbeData *  p, int  magic  )

static

Definition at line 865 of file img2dec.c.

Referenced by pam_probe(), pbm_probe(), pgmx_probe(), and ppm_probe().

static int pnm_probe ( const AVProbeData *  p )

inlinestatic

Definition at line 872 of file img2dec.c.

Referenced by pam_probe(), pbm_probe(), pgmx_probe(), and ppm_probe().

static int pbm_probe ( AVProbeData *  p )

static

Definition at line 883 of file img2dec.c.

static int pgmx_probe ( AVProbeData *  p )

inlinestatic

Definition at line 888 of file img2dec.c.

Referenced by pgm_probe(), and pgmyuv_probe().

static int pgm_probe ( AVProbeData *  p )

static

Definition at line 893 of file img2dec.c.

static int pgmyuv_probe ( AVProbeData *  p )

static

Definition at line 899 of file img2dec.c.

static int ppm_probe ( AVProbeData *  p )

static

Definition at line 905 of file img2dec.c.

static int pam_probe ( AVProbeData *  p )

static

Definition at line 910 of file img2dec.c.

Variable Documentation

const int sizes[][2]

static

Initial value:

= {
    { 640, 480 },
    { 720, 480 },
    { 720, 576 },
    { 352, 288 },
    { 352, 240 },
    { 160, 128 },
    { 512, 384 },
    { 640, 352 },
    { 640, 240 },
}

Definition at line 50 of file img2dec.c.

Referenced by aac_encode_init(), encode_frame(), infer_size(), ra144_decode_frame(), ra144_encode_frame(), setup_partitions(), svq1_decode_init(), and x8_vlc_init().

const AVOption ff_img_options[]

Initial value:

= {
    { "framerate",    "set the video framerate",             OFFSET(framerate),    AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX,   DEC },
    { "loop",         "force loop over input file sequence", OFFSET(loop),         AV_OPT_TYPE_BOOL,   {.i64 = 0   }, 0, 1,       DEC },

    { "pattern_type", "set pattern type",                    OFFSET(pattern_type), AV_OPT_TYPE_INT,    {.i64=PT_DEFAULT}, 0,       INT_MAX, DEC, "pattern_type"},
    { "glob_sequence","select glob/sequence pattern type",   0, AV_OPT_TYPE_CONST,  {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
    { "glob",         "select glob pattern type",            0, AV_OPT_TYPE_CONST,  {.i64=PT_GLOB         }, INT_MIN, INT_MAX, DEC, "pattern_type" },
    { "sequence",     "select sequence pattern type",        0, AV_OPT_TYPE_CONST,  {.i64=PT_SEQUENCE     }, INT_MIN, INT_MAX, DEC, "pattern_type" },
    { "none",         "disable pattern matching",            0, AV_OPT_TYPE_CONST,  {.i64=PT_NONE         }, INT_MIN, INT_MAX, DEC, "pattern_type" },

    { "pixel_format", "set video pixel format",              OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0,       DEC },
    { "start_number", "set first number in the sequence",    OFFSET(start_number), AV_OPT_TYPE_INT,    {.i64 = 0   }, INT_MIN, INT_MAX, DEC },
    { "start_number_range", "set range for looking at the first sequence number", OFFSET(start_number_range), AV_OPT_TYPE_INT, {.i64 = 5}, 1, INT_MAX, DEC },
    { "video_size",   "set video size",                      OFFSET(width),        AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0,   DEC },
    { "frame_size",   "force frame size in bytes",           OFFSET(frame_size),   AV_OPT_TYPE_INT,    {.i64 = 0   }, 0, INT_MAX, DEC },
    { "ts_from_file", "set frame timestamp from file's one", OFFSET(ts_from_file), AV_OPT_TYPE_INT,    {.i64 = 0   }, 0, 2,       DEC, "ts_type" },
    { "none", "none",                   0, AV_OPT_TYPE_CONST,    {.i64 = 0   }, 0, 2,       DEC, "ts_type" },
    { "sec",  "second precision",       0, AV_OPT_TYPE_CONST,    {.i64 = 1   }, 0, 2,       DEC, "ts_type" },
    { "ns",   "nano second precision",  0, AV_OPT_TYPE_CONST,    {.i64 = 2   }, 0, 2,       DEC, "ts_type" },
    { NULL },
}

Definition at line 563 of file img2dec.c.