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FFmpeg
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vf_scale.c File Reference
scale video filter More...
#include <stdio.h>#include <string.h>#include "avfilter.h"#include "formats.h"#include "internal.h"#include "video.h"#include "libavutil/avstring.h"#include "libavutil/eval.h"#include "libavutil/internal.h"#include "libavutil/mathematics.h"#include "libavutil/opt.h"#include "libavutil/parseutils.h"#include "libavutil/pixdesc.h"#include "libavutil/imgutils.h"#include "libavutil/avassert.h"#include "libswscale/swscale.h"
Include dependency graph for vf_scale.c:
Go to the source code of this file.
Data Structures | |
| struct | ScaleContext |
Macros | |
| #define | OFFSET(x) offsetof(ScaleContext, x) |
| #define | FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
Functions | |
| static av_cold int | init (AVFilterContext *ctx) |
| static av_cold void | uninit (AVFilterContext *ctx) |
| static int | query_formats (AVFilterContext *ctx) |
| static int | config_props (AVFilterLink *outlink) |
| static int | scale_slice (AVFilterLink *link, AVFrame *out_buf, AVFrame *cur_pic, struct SwsContext *sws, int y, int h, int mul, int field) |
| static int | filter_frame (AVFilterLink *link, AVFrame *in) |
| AVFILTER_DEFINE_CLASS (scale) | |
Variables | |
| static const char *const | var_names [] |
| static const AVOption | scale_options [] |
| static const AVFilterPad | avfilter_vf_scale_inputs [] |
| static const AVFilterPad | avfilter_vf_scale_outputs [] |
| AVFilter | avfilter_vf_scale |
Detailed Description
scale video filter
Definition in file vf_scale.c.
Macro Definition Documentation
| #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
Definition at line 388 of file vf_scale.c.
| #define OFFSET | ( | x | ) | offsetof(ScaleContext, x) |
Definition at line 387 of file vf_scale.c.
Enumeration Type Documentation
| enum var_name |
Definition at line 57 of file vf_scale.c.
Function Documentation
| AVFILTER_DEFINE_CLASS | ( | scale | ) |
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Definition at line 183 of file vf_scale.c.
Referenced by filter_frame().
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Definition at line 327 of file vf_scale.c.
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Definition at line 95 of file vf_scale.c.
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Definition at line 153 of file vf_scale.c.
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Definition at line 303 of file vf_scale.c.
Referenced by filter_frame().
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Definition at line 143 of file vf_scale.c.
Variable Documentation
| AVFilter avfilter_vf_scale |
Initial value:
= {
.name = "scale",
.description = NULL_IF_CONFIG_SMALL("Scale the input video to width:height size and/or convert the image format."),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.priv_size = sizeof(ScaleContext),
.priv_class = &scale_class,
}
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: libavutil/internal.h:123
static const AVFilterPad avfilter_vf_scale_outputs[]
Definition: vf_scale.c:413
static const AVFilterPad avfilter_vf_scale_inputs[]
Definition: vf_scale.c:404
Definition: vf_scale.c:70
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
Definition: filter_design.txt:216
Definition at line 422 of file vf_scale.c.
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Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
},
{ NULL }
}
Definition: avutil.h:143
Definition at line 404 of file vf_scale.c.
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Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_props,
},
{ NULL }
}
Definition: avutil.h:143
Definition at line 413 of file vf_scale.c.
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Initial value:
= {
{ "flags", "Flags to pass to libswscale", OFFSET(flags_str), AV_OPT_TYPE_STRING, { .str = "bilinear" }, .flags = FLAGS },
{ NULL },
}
Definition: opt.h:222
Definition: opt.h:226
Definition at line 390 of file vf_scale.c.
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Initial value:
= {
"in_w", "iw",
"in_h", "ih",
"out_w", "ow",
"out_h", "oh",
"a",
"sar",
"dar",
"hsub",
"vsub",
}
Definition at line 44 of file vf_scale.c.
Referenced by config_props().
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