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lavfi/deshake: support named options.

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This commit is contained in:
Clément Bœsch 2013-03-05 20:16:51 +01:00
parent c0bfc2b90d
commit 34d0ea5247
3 changed files with 67 additions and 42 deletions
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31
doc/filters.texi
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@ -2320,8 +2320,10 @@ Attempt to fix small changes in horizontal and/or vertical shift. This
filter helps remove camera shake from hand-holding a camera, bumping a
tripod, moving on a vehicle, etc.
The filter accepts parameters as a string of the form
"@var{x}:@var{y}:@var{w}:@var{h}:@var{rx}:@var{ry}:@var{edge}:@var{blocksize}:@var{contrast}:@var{search}:@var{filename}"
The filter accepts parameters as a list of @var{key}=@var{value}
pairs, separated by ":". If the key of the first options is omitted,
the arguments are interpreted according to the syntax
@var{x}:@var{y}:@var{w}:@var{h}:@var{rx}:@var{ry}:@var{edge}:@var{blocksize}:@var{contrast}:@var{search}:@var{filename}.
A description of the accepted parameters follows.
@ -2351,19 +2353,18 @@ range 0-64 pixels. Default 16.
@item edge
Specify how to generate pixels to fill blanks at the edge of the
frame. An integer from 0 to 3 as follows:
@table @option
@item 0
frame. Available values are:
@table @samp
@item blank, 0
Fill zeroes at blank locations
@item 1
@item original, 1
Original image at blank locations
@item 2
@item clamp, 2
Extruded edge value at blank locations
@item 3
@item mirror, 3
Mirrored edge at blank locations
@end table
The default setting is mirror edge at blank locations.
Default value is @samp{mirror}.
@item blocksize
Specify the blocksize to use for motion search. Range 4-128 pixels,
@ -2375,8 +2376,14 @@ the specified contrast (difference between darkest and lightest
pixels) will be considered. Range 1-255, default 125.
@item search
Specify the search strategy 0 = exhaustive search, 1 = less exhaustive
search. Default - exhaustive search.
Specify the search strategy. Available values are:
@table @samp
@item exhaustive, 0
Set exhaustive search
@item less, 1
Set less exhaustive search.
@end table
Default value is @samp{exhaustive}.
@item filename
If set then a detailed log of the motion search is written to the

2
libavfilter/version.h
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@ -30,7 +30,7 @@
#define LIBAVFILTER_VERSION_MAJOR 3
#define LIBAVFILTER_VERSION_MINOR 42
#define LIBAVFILTER_VERSION_MICRO 102
#define LIBAVFILTER_VERSION_MICRO 103
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \

76
libavfilter/vf_deshake.c
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@ -55,6 +55,7 @@
#include "video.h"
#include "libavutil/common.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavcodec/dsputil.h"
@ -86,7 +87,7 @@ typedef struct {
} Transform;
typedef struct {
AVClass av_class;
const AVClass *class;
AVFilterBufferRef *ref; ///< Previous frame
int rx; ///< Maximum horizontal shift
int ry; ///< Maximum vertical shift
@ -104,8 +105,35 @@ typedef struct {
int ch;
int cx;
int cy;
char *filename; ///< Motion search detailed log filename
} DeshakeContext;
#define OFFSET(x) offsetof(DeshakeContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
static const AVOption deshake_options[] = {
{ "x", "set x for the rectangular search area", OFFSET(cx), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
{ "y", "set y for the rectangular search area", OFFSET(cy), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
{ "w", "set width for the rectangular search area", OFFSET(cw), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
{ "h", "set height for the rectangular search area", OFFSET(ch), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
{ "rx", "set x for the rectangular search area", OFFSET(rx), AV_OPT_TYPE_INT, {.i64=16}, 0, 64, .flags = FLAGS },
{ "ry", "set y for the rectangular search area", OFFSET(ry), AV_OPT_TYPE_INT, {.i64=16}, 0, 64, .flags = FLAGS },
{ "edge", "set edge mode", OFFSET(edge), AV_OPT_TYPE_INT, {.i64=FILL_MIRROR}, FILL_BLANK, FILL_COUNT-1, FLAGS, "edge"},
{ "blank", "fill zeroes at blank locations", 0, AV_OPT_TYPE_CONST, {.i64=FILL_BLANK}, INT_MIN, INT_MAX, FLAGS, "edge" },
{ "original", "original image at blank locations", 0, AV_OPT_TYPE_CONST, {.i64=FILL_ORIGINAL}, INT_MIN, INT_MAX, FLAGS, "edge" },
{ "clamp", "extruded edge value at blank locations", 0, AV_OPT_TYPE_CONST, {.i64=FILL_CLAMP}, INT_MIN, INT_MAX, FLAGS, "edge" },
{ "mirror", "mirrored edge at blank locations", 0, AV_OPT_TYPE_CONST, {.i64=FILL_MIRROR}, INT_MIN, INT_MAX, FLAGS, "edge" },
{ "blocksize", "set motion search blocksize", OFFSET(blocksize), AV_OPT_TYPE_INT, {.i64=8}, 4, 128, .flags = FLAGS },
{ "contrast", "set contrast threshold for blocks", OFFSET(contrast), AV_OPT_TYPE_INT, {.i64=125}, 1, 255, .flags = FLAGS },
{ "search", "set search strategy", OFFSET(search), AV_OPT_TYPE_INT, {.i64=EXHAUSTIVE}, EXHAUSTIVE, SEARCH_COUNT-1, FLAGS, "smode" },
{ "exhaustive", "exhaustive search", 0, AV_OPT_TYPE_CONST, {.i64=EXHAUSTIVE}, INT_MIN, INT_MAX, FLAGS, "smode" },
{ "less", "less exhaustive search", 0, AV_OPT_TYPE_CONST, {.i64=SMART_EXHAUSTIVE}, INT_MIN, INT_MAX, FLAGS, "smode" },
{ "filename", "set motion search detailed log file name", OFFSET(filename), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(deshake);
static int cmp(const double *a, const double *b)
{
return *a < *b ? -1 : ( *a > *b ? 1 : 0 );
@ -334,40 +362,28 @@ static void find_motion(DeshakeContext *deshake, uint8_t *src1, uint8_t *src2,
static av_cold int init(AVFilterContext *ctx, const char *args)
{
int ret;
DeshakeContext *deshake = ctx->priv;
char filename[256] = {0};
static const char *shorthand[] = {
"x", "y", "w", "h", "rx", "ry", "edge",
"blocksize", "contrast", "search", "filename",
NULL
};
deshake->rx = 16;
deshake->ry = 16;
deshake->edge = FILL_MIRROR;
deshake->blocksize = 8;
deshake->contrast = 125;
deshake->search = EXHAUSTIVE;
deshake->refcount = 20;
deshake->refcount = 20; // XXX: add to options?
deshake->cw = -1;
deshake->ch = -1;
deshake->cx = -1;
deshake->cy = -1;
deshake->class = &deshake_class;
av_opt_set_defaults(deshake);
if (args) {
sscanf(args, "%d:%d:%d:%d:%d:%d:%d:%d:%d:%d:%255s",
&deshake->cx, &deshake->cy, &deshake->cw, &deshake->ch,
&deshake->rx, &deshake->ry, &deshake->edge,
&deshake->blocksize, &deshake->contrast, &deshake->search, filename);
ret = av_opt_set_from_string(deshake, args, shorthand, "=", ":");
if (ret < 0)
return ret;
deshake->blocksize /= 2;
deshake->blocksize /= 2;
deshake->blocksize = av_clip(deshake->blocksize, 4, 128);
deshake->rx = av_clip(deshake->rx, 0, 64);
deshake->ry = av_clip(deshake->ry, 0, 64);
deshake->edge = av_clip(deshake->edge, FILL_BLANK, FILL_COUNT - 1);
deshake->blocksize = av_clip(deshake->blocksize, 4, 128);
deshake->contrast = av_clip(deshake->contrast, 1, 255);
deshake->search = av_clip(deshake->search, EXHAUSTIVE, SEARCH_COUNT - 1);
}
if (*filename)
deshake->fp = fopen(filename, "w");
if (deshake->filename)
deshake->fp = fopen(deshake->filename, "w");
if (deshake->fp)
fwrite("Ori x, Avg x, Fin x, Ori y, Avg y, Fin y, Ori angle, Avg angle, Fin angle, Ori zoom, Avg zoom, Fin zoom\n", sizeof(char), 104, deshake->fp);
@ -424,6 +440,7 @@ static av_cold void uninit(AVFilterContext *ctx)
if (deshake->avctx)
avcodec_close(deshake->avctx);
av_freep(&deshake->avctx);
av_opt_free(deshake);
}
static int filter_frame(AVFilterLink *link, AVFilterBufferRef *in)
@ -565,4 +582,5 @@ AVFilter avfilter_vf_deshake = {
.query_formats = query_formats,
.inputs = deshake_inputs,
.outputs = deshake_outputs,
.priv_class = &deshake_class,
};