rotation filter, partially based on the tests/rotozoom.c program More...

#include "libavutil/avstring.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "internal.h"
#include "video.h"
#include <float.h>

Data Structures
struct	RotContext

struct	ThreadData

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

#define	FLAGS AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM

#define	FIXP (1<<16)

#define	FIXP2 (1<<20)

#define	INT_PI 3294199

#define	SET_SIZE_EXPR(name, opt_name)

#define	TS2T(ts, tb) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts)*av_q2d(tb))

Enumerations
enum	var_name { VAR_CH, VAR_N, VAR_NB_IN_CHANNELS, VAR_NB_OUT_CHANNELS, VAR_T, VAR_S, VAR_VARS_NB, VAR_VALUE1, VAR_VALUE2, VAR_VARS_NB, VAR_TB, VAR_PTS, VAR_START_PTS, VAR_PREV_PTS, VAR_PREV_SELECTED_PTS, VAR_T, VAR_START_T, VAR_PREV_T, VAR_PREV_SELECTED_T, VAR_PICT_TYPE, VAR_I, VAR_P, VAR_B, VAR_S, VAR_SI, VAR_SP, VAR_BI, VAR_PICT_TYPE_I, VAR_PICT_TYPE_P, VAR_PICT_TYPE_B, VAR_PICT_TYPE_S, VAR_PICT_TYPE_SI, VAR_PICT_TYPE_SP, VAR_PICT_TYPE_BI, VAR_INTERLACE_TYPE, VAR_INTERLACE_TYPE_P, VAR_INTERLACE_TYPE_T, VAR_INTERLACE_TYPE_B, VAR_CONSUMED_SAMPLES_N, VAR_SAMPLES_N, VAR_SAMPLE_RATE, VAR_N, VAR_SELECTED_N, VAR_PREV_SELECTED_N, VAR_KEY, VAR_POS, VAR_SCENE, VAR_CONCATDEC_SELECT, VAR_VARS_NB, VAR_PI, VAR_PHI, VAR_E, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_OHSUB, VAR_OVSUB, VARS_NB, VAR_FRAME_RATE, VAR_INTERLACED, VAR_N, VAR_NB_CONSUMED_SAMPLES, VAR_NB_SAMPLES, VAR_POS, VAR_PREV_INPTS, VAR_PREV_INT, VAR_PREV_OUTPTS, VAR_PREV_OUTT, VAR_PTS, VAR_SAMPLE_RATE, VAR_STARTPTS, VAR_STARTT, VAR_T, VAR_TB, VAR_RTCTIME, VAR_RTCSTART, VAR_S, VAR_SR, VAR_VARS_NB, VAR_AVTB, VAR_INTB, VAR_SR, VAR_VARS_NB, VAR_W, VAR_H, VAR_A, VAR_DAR, VAR_SAR, VAR_HSUB, VAR_VSUB, VARS_NB, VAR_W, VAR_H, VAR_CW, VAR_CH, VAR_HSUB, VAR_VSUB, VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_X, VAR_Y, VAR_N, VAR_POS, VAR_T, VAR_VARS_NB, VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_IN_H, VAR_IH, VAR_IN_W, VAR_IW, VAR_SAR, VAR_X, VAR_Y, VAR_H, VAR_W, VAR_T, VAR_MAX, VARS_NB, VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_LINE_H, VAR_LH, VAR_MAIN_H, VAR_h, VAR_H, VAR_MAIN_W, VAR_w, VAR_W, VAR_MAX_GLYPH_A, VAR_ASCENT, VAR_MAX_GLYPH_D, VAR_DESCENT, VAR_MAX_GLYPH_H, VAR_MAX_GLYPH_W, VAR_N, VAR_SAR, VAR_T, VAR_TEXT_H, VAR_TH, VAR_TEXT_W, VAR_TW, VAR_X, VAR_Y, VAR_PICT_TYPE, VAR_VARS_NB, VAR_N, VAR_POS, VAR_R, VAR_T, VAR_NB, VAR_N, VAR_PTS, VAR_R, VAR_T, VAR_TB, VAR_NB, VAR_W, VAR_H, VAR_VAL, VAR_MAXVAL, VAR_MINVAL, VAR_NEGVAL, VAR_CLIPVAL, VAR_VARS_NB, VAR_W, VAR_H, VAR_X, VAR_Y, VAR_BITDEPTHX, VAR_BITDEPTHY, VAR_VARS_NB, VAR_MAIN_W, VAR_MW, VAR_MAIN_H, VAR_MH, VAR_OVERLAY_W, VAR_OW, VAR_OVERLAY_H, VAR_OH, VAR_HSUB, VAR_VSUB, VAR_X, VAR_Y, VAR_N, VAR_POS, VAR_T, VAR_VARS_NB, VAR_MAIN_iW, VAR_MW, VAR_MAIN_iH, VAR_MH, VAR_OVERLAY_iW, VAR_OVERLAY_iH, VAR_OVERLAY_X, VAR_OX, VAR_OVERLAY_Y, VAR_OY, VAR_OVERLAY_W, VAR_OW, VAR_OVERLAY_H, VAR_OH, VAR_VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_X, VAR_Y, VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB, VARS_NB, VAR_W, VAR_H, VAR_VAL, VAR_YMIN, VAR_UMIN, VAR_VMIN, VAR_AMIN, VAR_YMAX, VAR_UMAX, VAR_VMAX, VAR_AMAX, VAR_VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_HSUB, VAR_VSUB, VAR_N, VAR_T, VAR_VARS_NB, VAR_PI, VAR_PHI, VAR_E, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_A, VAR_DAR, VAR_SAR, VARS_NB, VAR_W, VAR_H, VAR_N, VAR_PTS, VAR_R, VAR_T, VAR_TB, VAR_NB, VAR_iW, VAR_IN_W, VAR_iH, VAR_IN_H, VAR_oW, VAR_OUT_W, VAR_W, VAR_oH, VAR_OUT_H, VAR_H, CW, CH, CX, CY, VAR_VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_IN, VAR_ON, VAR_DURATION, VAR_PDURATION, VAR_TIME, VAR_FRAME, VAR_ZOOM, VAR_PZOOM, VAR_X, VAR_PX, VAR_Y, VAR_PY, VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB, VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_OHSUB, VAR_OVSUB, VARS_NB, VAR_X, VAR_Y, VAR_W, VAR_H, VAR_TIME, VAR_SPEED, VAR_TEMPO, VAR_ORDER, VAR_PATTERN, VAR_ROW, VAR_VARS_NB }

Functions
	AVFILTER_DEFINE_CLASS (rotate)

static av_cold int	init (AVFilterContext *ctx)

static av_cold void	uninit (AVFilterContext *ctx)

static int	query_formats (AVFilterContext *ctx)

static double	get_rotated_w (void *opaque, double angle)

static double	get_rotated_h (void *opaque, double angle)

static int64_t	int_sin (int64_t a)
	Compute the sin of a using integer values. More...

static uint8_t *	interpolate_bilinear8 (uint8_t dst_color, const uint8_t src, int src_linesize, int src_linestep, int x, int y, int max_x, int max_y)
	Interpolate the color in src at position x and y using bilinear interpolation. More...

static uint8_t *	interpolate_bilinear16 (uint8_t dst_color, const uint8_t src, int src_linesize, int src_linestep, int x, int y, int max_x, int max_y)
	Interpolate the color in src at position x and y using bilinear interpolation. More...

static int	config_props (AVFilterLink *outlink)

static av_always_inline void	copy_elem (uint8_t pout, const uint8_t pin, int elem_size)

static av_always_inline void	simple_rotate_internal (uint8_t dst, const uint8_t src, int src_linesize, int angle, int elem_size, int len)

static av_always_inline void	simple_rotate (uint8_t dst, const uint8_t src, int src_linesize, int angle, int elem_size, int len)

static int	filter_slice (AVFilterContext ctx, void arg, int job, int nb_jobs)

static int	filter_frame (AVFilterLink inlink, AVFrame in)

static int	process_command (AVFilterContext ctx, const char cmd, const char args, char res, int res_len, int flags)

Variables
static const char *const	var_names []

static const AVOption	rotate_options []

static double(*const	func1 [])(void *, double)

static const char *const	func1_names []

static const AVFilterPad	rotate_inputs []

static const AVFilterPad	rotate_outputs []

AVFilter	ff_vf_rotate

Detailed Description

rotation filter, partially based on the tests/rotozoom.c program

Definition in file vf_rotate.c.

Macro Definition Documentation

◆ OFFSET

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

Definition at line 95 of file vf_rotate.c.

◆ FLAGS

#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 96 of file vf_rotate.c.

◆ FIXP

#define FIXP (1<<16)

Definition at line 201 of file vf_rotate.c.

Referenced by filter_frame(), and filter_slice().

◆ FIXP2

#define FIXP2 (1<<20)

Definition at line 202 of file vf_rotate.c.

Referenced by int_sin().

◆ INT_PI

#define INT_PI 3294199

Definition at line 203 of file vf_rotate.c.

Referenced by filter_frame(), and int_sin().

◆ SET_SIZE_EXPR

#define SET_SIZE_EXPR	(	name,
		opt_name
	)

Value:

do {                                         \
    ret = av_expr_parse_and_eval(&res, expr = rot->name##_expr_str,                \
                                 var_names, rot->var_values,                       \
                                 func1_names, func1, NULL, NULL, rot, 0, ctx);     \
    if (ret < 0 || isnan(res) || isinf(res) || res <= 0) {                         \
        av_log(ctx, AV_LOG_ERROR,                                                  \
               "Error parsing or evaluating expression for option %s: "            \
               "invalid expression '%s' or non-positive or indefinite value %f\n", \
               opt_name, expr, res);                                               \
        return ret;                                                                \
    }                                                                              \
} while (0)

Referenced by config_props().

◆ TS2T

#define TS2T	(	ts,
		tb
	)	((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts)*av_q2d(tb))

Definition at line 417 of file vf_rotate.c.

Referenced by filter_frame().

Enumeration Type Documentation

◆ var_name

enum var_name

Enumerator
VAR_CH
VAR_N
VAR_NB_IN_CHANNELS
VAR_NB_OUT_CHANNELS
VAR_T
VAR_S
VAR_VARS_NB
VAR_VALUE1
VAR_VALUE2
VAR_VARS_NB
VAR_TB
VAR_PTS
VAR_START_PTS
VAR_PREV_PTS
VAR_PREV_SELECTED_PTS
VAR_T
VAR_START_T
VAR_PREV_T
VAR_PREV_SELECTED_T
VAR_PICT_TYPE
VAR_I
VAR_P
VAR_B
VAR_S
VAR_SI
VAR_SP
VAR_BI
VAR_PICT_TYPE_I
VAR_PICT_TYPE_P
VAR_PICT_TYPE_B
VAR_PICT_TYPE_S
VAR_PICT_TYPE_SI
VAR_PICT_TYPE_SP
VAR_PICT_TYPE_BI
VAR_INTERLACE_TYPE
VAR_INTERLACE_TYPE_P
VAR_INTERLACE_TYPE_T
VAR_INTERLACE_TYPE_B
VAR_CONSUMED_SAMPLES_N
VAR_SAMPLES_N
VAR_SAMPLE_RATE
VAR_N
VAR_SELECTED_N
VAR_PREV_SELECTED_N
VAR_KEY
VAR_POS
VAR_SCENE
VAR_CONCATDEC_SELECT
VAR_VARS_NB
VAR_PI
VAR_PHI
VAR_E
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VAR_OHSUB
VAR_OVSUB
VARS_NB
VAR_FRAME_RATE
VAR_INTERLACED
VAR_N
VAR_NB_CONSUMED_SAMPLES
VAR_NB_SAMPLES
VAR_POS
VAR_PREV_INPTS
VAR_PREV_INT
VAR_PREV_OUTPTS
VAR_PREV_OUTT
VAR_PTS
VAR_SAMPLE_RATE
VAR_STARTPTS
VAR_STARTT
VAR_T
VAR_TB
VAR_RTCTIME
VAR_RTCSTART
VAR_S
VAR_SR
VAR_VARS_NB
VAR_AVTB
VAR_INTB
VAR_SR
VAR_VARS_NB
VAR_W
VAR_H
VAR_A
VAR_DAR
VAR_SAR
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_W
VAR_H
VAR_CW
VAR_CH
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VAR_X
VAR_Y
VAR_N
VAR_POS
VAR_T
VAR_VARS_NB
VAR_DAR
VAR_HSUB
VAR_VSUB
VAR_IN_H
VAR_IH
VAR_IN_W
VAR_IW
VAR_SAR
VAR_X
VAR_Y
VAR_H
VAR_W
VAR_T
VAR_MAX
VARS_NB
VAR_DAR
VAR_HSUB
VAR_VSUB
VAR_LINE_H
VAR_LH
VAR_MAIN_H
VAR_h
VAR_H
VAR_MAIN_W
VAR_w
VAR_W
VAR_MAX_GLYPH_A
VAR_ASCENT
VAR_MAX_GLYPH_D
VAR_DESCENT
VAR_MAX_GLYPH_H
VAR_MAX_GLYPH_W
VAR_N
VAR_SAR
VAR_T
VAR_TEXT_H
VAR_TH
VAR_TEXT_W
VAR_TW
VAR_X
VAR_Y
VAR_PICT_TYPE
VAR_VARS_NB
VAR_N
VAR_POS
VAR_R
VAR_T
VAR_NB
VAR_N
VAR_PTS
VAR_R
VAR_T
VAR_TB
VAR_NB
VAR_W
VAR_H
VAR_VAL
VAR_MAXVAL
VAR_MINVAL
VAR_NEGVAL
VAR_CLIPVAL
VAR_VARS_NB
VAR_W
VAR_H
VAR_X
VAR_Y
VAR_BITDEPTHX
VAR_BITDEPTHY
VAR_VARS_NB
VAR_MAIN_W
VAR_MW
VAR_MAIN_H
VAR_MH
VAR_OVERLAY_W
VAR_OW
VAR_OVERLAY_H
VAR_OH
VAR_HSUB
VAR_VSUB
VAR_X
VAR_Y
VAR_N
VAR_POS
VAR_T
VAR_VARS_NB
VAR_MAIN_iW
VAR_MW
VAR_MAIN_iH
VAR_MH
VAR_OVERLAY_iW
VAR_OVERLAY_iH
VAR_OVERLAY_X
VAR_OX
VAR_OVERLAY_Y
VAR_OY
VAR_OVERLAY_W
VAR_OW
VAR_OVERLAY_H
VAR_OH
VAR_VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_X
VAR_Y
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_W
VAR_H
VAR_VAL
VAR_YMIN
VAR_UMIN
VAR_VMIN
VAR_AMIN
VAR_YMAX
VAR_UMAX
VAR_VMAX
VAR_AMAX
VAR_VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_HSUB
VAR_VSUB
VAR_N
VAR_T
VAR_VARS_NB
VAR_PI
VAR_PHI
VAR_E
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_DAR
VAR_SAR
VARS_NB
VAR_W
VAR_H
VAR_N
VAR_PTS
VAR_R
VAR_T
VAR_TB
VAR_NB
VAR_iW
VAR_IN_W
VAR_iH
VAR_IN_H
VAR_oW
VAR_OUT_W
VAR_W
VAR_oH
VAR_OUT_H
VAR_H
CW
CH
CX
CY
VAR_VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_IN
VAR_ON
VAR_DURATION
VAR_PDURATION
VAR_TIME
VAR_FRAME
VAR_ZOOM
VAR_PZOOM
VAR_X
VAR_PX
VAR_Y
VAR_PY
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VAR_OHSUB
VAR_OVSUB
VARS_NB
VAR_X
VAR_Y
VAR_W
VAR_H
VAR_TIME
VAR_SPEED
VAR_TEMPO
VAR_ORDER
VAR_PATTERN
VAR_ROW
VAR_VARS_NB

Definition at line 52 of file vf_rotate.c.

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( rotate )

◆ init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 113 of file vf_rotate.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 126 of file vf_rotate.c.

◆ query_formats()

static int query_formats ( AVFilterContext * ctx )

static

Definition at line 134 of file vf_rotate.c.

◆ get_rotated_w()

static double get_rotated_w	(	void *	opaque,
		double	angle
	)

static

Definition at line 165 of file vf_rotate.c.

◆ get_rotated_h()

static double get_rotated_h	(	void *	opaque,
		double	angle
	)

static

Definition at line 177 of file vf_rotate.c.

◆ int_sin()

static int64_t int_sin ( int64_t a )

static

Compute the sin of a using integer values.

Input is scaled by FIXP2 and output values are scaled by FIXP.

Definition at line 209 of file vf_rotate.c.

Referenced by filter_frame().

◆ interpolate_bilinear8()

static uint8_t* interpolate_bilinear8	(	uint8_t *	dst_color,
		const uint8_t *	src,
		int	src_linesize,
		int	src_linestep,
		int	x,
		int	y,
		int	max_x,
		int	max_y
	)

static

Interpolate the color in src at position x and y using bilinear interpolation.

Definition at line 232 of file vf_rotate.c.

Referenced by config_props().

◆ interpolate_bilinear16()

static uint8_t* interpolate_bilinear16	(	uint8_t *	dst_color,
		const uint8_t *	src,
		int	src_linesize,
		int	src_linestep,
		int	x,
		int	y,
		int	max_x,
		int	max_y
	)

static

Interpolate the color in src at position x and y using bilinear interpolation.

Definition at line 262 of file vf_rotate.c.

Referenced by config_props().

◆ config_props()

static int config_props ( AVFilterLink * outlink )

static

Definition at line 288 of file vf_rotate.c.

◆ copy_elem()

static av_always_inline void copy_elem	(	uint8_t *	pout,
		const uint8_t *	pin,
		int	elem_size
	)

static

Definition at line 361 of file vf_rotate.c.

Referenced by simple_rotate_internal().

◆ simple_rotate_internal()

static av_always_inline void simple_rotate_internal	(	uint8_t *	dst,
		const uint8_t *	src,
		int	src_linesize,
		int	angle,
		int	elem_size,
		int	len
	)

static

Definition at line 384 of file vf_rotate.c.

Referenced by simple_rotate().

◆ simple_rotate()

static av_always_inline void simple_rotate	(	uint8_t *	dst,
		const uint8_t *	src,
		int	src_linesize,
		int	angle,
		int	elem_size,
		int	len
	)

static

Definition at line 406 of file vf_rotate.c.

Referenced by filter_slice().

◆ filter_slice()

static int filter_slice	(	AVFilterContext *	ctx,
		void *	arg,
		int	job,
		int	nb_jobs
	)

static

Definition at line 419 of file vf_rotate.c.

Referenced by filter_frame().

◆ filter_frame()

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

static

Definition at line 509 of file vf_rotate.c.

◆ process_command()

static int process_command	(	AVFilterContext *	ctx,
		const char *	cmd,
		const char *	args,
		char *	res,
		int	res_len,
		int	flags
	)

static

Definition at line 563 of file vf_rotate.c.

Variable Documentation

◆ var_names

const char* const var_names[]

static

Initial value:

= {
    "in_w" , "iw",  
    "in_h" , "ih",  
    "out_w", "ow",  
    "out_h", "oh",  
    "hsub", "vsub",
    "n",            
    "t",            
    NULL
}

Definition at line 41 of file vf_rotate.c.

Referenced by config_props(), and process_command().

◆ rotate_options

const AVOption rotate_options[]

static

Initial value:

= {
    { "angle",     "set angle (in radians)",       OFFSET(angle_expr_str), AV_OPT_TYPE_STRING, {.str="0"}, CHAR_MIN, CHAR_MAX, .flags=FLAGS },
    { "a",         "set angle (in radians)",       OFFSET(angle_expr_str), AV_OPT_TYPE_STRING, {.str="0"}, CHAR_MIN, CHAR_MAX, .flags=FLAGS },
    { "out_w",     "set output width expression",  OFFSET(outw_expr_str), AV_OPT_TYPE_STRING, {.str="iw"}, CHAR_MIN, CHAR_MAX, .flags=FLAGS },
    { "ow",        "set output width expression",  OFFSET(outw_expr_str), AV_OPT_TYPE_STRING, {.str="iw"}, CHAR_MIN, CHAR_MAX, .flags=FLAGS },
    { "out_h",     "set output height expression", OFFSET(outh_expr_str), AV_OPT_TYPE_STRING, {.str="ih"}, CHAR_MIN, CHAR_MAX, .flags=FLAGS },
    { "oh",        "set output height expression", OFFSET(outh_expr_str), AV_OPT_TYPE_STRING, {.str="ih"}, CHAR_MIN, CHAR_MAX, .flags=FLAGS },
    { "fillcolor", "set background fill color",    OFFSET(fillcolor_str), AV_OPT_TYPE_STRING, {.str="black"}, CHAR_MIN, CHAR_MAX, .flags=FLAGS },
    { "c",         "set background fill color",    OFFSET(fillcolor_str), AV_OPT_TYPE_STRING, {.str="black"}, CHAR_MIN, CHAR_MAX, .flags=FLAGS },
    { "bilinear",  "use bilinear interpolation",   OFFSET(use_bilinear),  AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, .flags=FLAGS },
    { NULL }
}

Definition at line 98 of file vf_rotate.c.

◆ func1

double(* const func1[])(void *, double)

static

Initial value:

= {
    get_rotated_w,
    get_rotated_h,
    NULL
}

Definition at line 189 of file vf_rotate.c.

Referenced by config_props(), ff_rate_control_init(), and parse_channel_expressions().

◆ func1_names

const char* const func1_names[]

static

Initial value:

= {
    "rotw",
    "roth",
    NULL
}

Definition at line 195 of file vf_rotate.c.

Referenced by config_props(), ff_rate_control_init(), and parse_channel_expressions().

◆ rotate_inputs

const AVFilterPad rotate_inputs[]

static

Initial value:

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

Definition at line 586 of file vf_rotate.c.

◆ rotate_outputs

const AVFilterPad rotate_outputs[]

static

Initial value:

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

Definition at line 595 of file vf_rotate.c.

◆ ff_vf_rotate

AVFilter ff_vf_rotate

Initial value:

= {
    .name          = "rotate",
    .description   = NULL_IF_CONFIG_SMALL("Rotate the input image."),
    .priv_size     = sizeof(RotContext),
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .process_command = process_command,
    .inputs        = rotate_inputs,
    .outputs       = rotate_outputs,
    .priv_class    = &rotate_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 604 of file vf_rotate.c.

Data Structures

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ OFFSET

◆ FLAGS

◆ FIXP

◆ FIXP2

◆ INT_PI

◆ SET_SIZE_EXPR

◆ TS2T

Enumeration Type Documentation

◆ var_name

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

◆ init()

◆ uninit()

◆ query_formats()

◆ get_rotated_w()

◆ get_rotated_h()

◆ int_sin()

◆ interpolate_bilinear8()

◆ interpolate_bilinear16()

◆ config_props()

◆ copy_elem()

◆ simple_rotate_internal()

◆ simple_rotate()

◆ filter_slice()

◆ filter_frame()

◆ process_command()

Variable Documentation

◆ var_names

◆ rotate_options

◆ func1

◆ func1_names

◆ rotate_inputs

◆ rotate_outputs

◆ ff_vf_rotate