vf_transpose.c File Reference

transposition filter Based on MPlayer libmpcodecs/vf_rotate.c. More...

#include <stdio.h>
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	TransContext

Macros
#define	OFFSET(x)   offsetof(TransContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Enumerations
enum	PassthroughType { TRANSPOSE_PT_TYPE_NONE, TRANSPOSE_PT_TYPE_LANDSCAPE, TRANSPOSE_PT_TYPE_PORTRAIT }
enum	TransposeDir { TRANSPOSE_CCLOCK_FLIP, TRANSPOSE_CLOCK, TRANSPOSE_CCLOCK, TRANSPOSE_CLOCK_FLIP }

Functions
static int	query_formats (AVFilterContext *ctx)
static int	config_props_output (AVFilterLink *outlink)
static AVFrame *	get_video_buffer (AVFilterLink *inlink, int w, int h)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
	AVFILTER_DEFINE_CLASS (transpose)

Variables
static const AVOption	transpose_options []
static const AVFilterPad	avfilter_vf_transpose_inputs []
static const AVFilterPad	avfilter_vf_transpose_outputs []
AVFilter	avfilter_vf_transpose

Detailed Description

transposition filter Based on MPlayer libmpcodecs/vf_rotate.c.

Definition in file vf_transpose.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(TransContext, x)

Definition at line 226 of file vf_transpose.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 227 of file vf_transpose.c.

Enumeration Type Documentation

enum PassthroughType

Enumerator:

TRANSPOSE_PT_TYPE_NONE
TRANSPOSE_PT_TYPE_LANDSCAPE
TRANSPOSE_PT_TYPE_PORTRAIT

Definition at line 41 of file vf_transpose.c.

enum TransposeDir

Enumerator:

TRANSPOSE_CCLOCK_FLIP
TRANSPOSE_CLOCK
TRANSPOSE_CCLOCK
TRANSPOSE_CLOCK_FLIP

Definition at line 47 of file vf_transpose.c.

Function Documentation

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 63 of file vf_transpose.c.

static int config_props_output ( AVFilterLink *  outlink )

static

Definition at line 82 of file vf_transpose.c.

static AVFrame* get_video_buffer ( AVFilterLink *  inlink, int  w, int  h  )

static

Definition at line 127 of file vf_transpose.c.

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 136 of file vf_transpose.c.

AVFILTER_DEFINE_CLASS

(

transpose

)

Variable Documentation

const AVOption transpose_options[]

static

Initial value:

= {
    { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 7, FLAGS, "dir" },
        { "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .unit = "dir" },
        { "clock",       "rotate clockwise",                            0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK       }, .unit = "dir" },
        { "cclock",      "rotate counter-clockwise",                    0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK      }, .unit = "dir" },
        { "clock_flip",  "rotate clockwise with vertical flip",         0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP  }, .unit = "dir" },

    { "passthrough", "do not apply transposition if the input matches the specified geometry",
      OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE},  0, INT_MAX, FLAGS, "passthrough" },
        { "none",      "always apply transposition",   0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE},      INT_MIN, INT_MAX, FLAGS, "passthrough" },
        { "portrait",  "preserve portrait geometry",   0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT},  INT_MIN, INT_MAX, FLAGS, "passthrough" },
        { "landscape", "preserve landscape geometry",  0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },

    { NULL },
}

Definition at line 229 of file vf_transpose.c.

const AVFilterPad avfilter_vf_transpose_inputs[]

static

Initial value:

= {
    {
        .name        = "default",
        .type        = AVMEDIA_TYPE_VIDEO,
        .get_video_buffer= get_video_buffer,
        .filter_frame = filter_frame,
    },
    { NULL }
}

Definition at line 247 of file vf_transpose.c.

const AVFilterPad avfilter_vf_transpose_outputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .config_props = config_props_output,
        .type         = AVMEDIA_TYPE_VIDEO,
    },
    { NULL }
}

Definition at line 257 of file vf_transpose.c.

AVFilter avfilter_vf_transpose

Initial value:

= {
    .name      = "transpose",
    .description = NULL_IF_CONFIG_SMALL("Transpose input video."),

    .priv_size = sizeof(TransContext),
    .priv_class = &transpose_class,

    .query_formats = query_formats,

    .inputs    = avfilter_vf_transpose_inputs,
    .outputs   = avfilter_vf_transpose_outputs,
}

Definition at line 266 of file vf_transpose.c.