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lavfi/smartblur: add support to named options
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Stefano Sabatini
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fb14e37dd0
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35135a3989
@ -4925,30 +4925,40 @@ expressed in the form "[@var{c0} @var{c1} @var{c2} @var{c3}]"
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Blur the input video without impacting the outlines.
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The filter accepts the following parameters:
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This filter accepts parameters as a list of @var{key}=@var{value} pairs,
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separated by ":".
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If the key of the first options is omitted, the arguments are
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interpreted according to the syntax:
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@var{luma_radius}:@var{luma_strength}:@var{luma_threshold}[:@var{chroma_radius}:@var{chroma_strength}:@var{chroma_threshold}]
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Parameters prefixed by @var{luma} indicate that they work on the
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luminance of the pixels whereas parameters prefixed by @var{chroma}
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refer to the chrominance of the pixels.
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A description of the accepted options follows.
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If the chroma parameters are not set, the luma parameters are used for
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either the luminance and the chrominance of the pixels.
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@table @option
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@item luma_radius, lr
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@item chroma_radius, cr
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Set the luma/chroma radius. The option value must be a float number in
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the range [0.1,5.0] that specifies the variance of the gaussian filter
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used to blur the image (slower if larger). Default value is 1.0.
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@var{luma_radius} or @var{chroma_radius} must be a float number in the
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range [0.1,5.0] that specifies the variance of the gaussian filter
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used to blur the image (slower if larger).
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@item luma_strength, ls
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@item chroma_strength, cs
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Set the luma/chroma strength. The option value must be a float number
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in the range [-1.0,1.0] that configures the blurring. A value included
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in [0.0,1.0] will blur the image whereas a value included in
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[-1.0,0.0] will sharpen the image. Default value is 1.0.
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@var{luma_strength} or @var{chroma_strength} must be a float number in
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the range [-1.0,1.0] that configures the blurring. A value included in
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[0.0,1.0] will blur the image whereas a value included in [-1.0,0.0]
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will sharpen the image.
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@item luma_threshold, lt
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@item chroma_threshold, ct
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Set the luma/chroma threshold used as a coefficient to determine
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whether a pixel should be blurred or not. The option value must be an
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integer in the range [-30,30]. A value of 0 will filter all the image,
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a value included in [0,30] will filter flat areas and a value included
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in [-30,0] will filter edges. Default value is 0.
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@end table
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@var{luma_threshold} or @var{chroma_threshold} must be an integer in
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the range [-30,30] that is used as a coefficient to determine whether
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a pixel should be blurred or not. A value of 0 will filter all the
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image, a value included in [0,30] will filter flat areas and a value
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included in [-30,0] will filter edges.
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If a chroma option is not explicitly set, the corresponding luma value
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is set.
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@section stereo3d
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@ -30,7 +30,7 @@
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#define LIBAVFILTER_VERSION_MAJOR 3
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#define LIBAVFILTER_VERSION_MINOR 44
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#define LIBAVFILTER_VERSION_MICRO 100
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#define LIBAVFILTER_VERSION_MICRO 101
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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
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LIBAVFILTER_VERSION_MINOR, \
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@ -25,6 +25,7 @@
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* Ported from MPlayer libmpcodecs/vf_smartblur.c by Michael Niedermayer.
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*/
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libswscale/swscale.h"
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@ -50,6 +51,7 @@ typedef struct {
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} FilterParam;
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typedef struct {
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const AVClass *class;
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FilterParam luma;
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FilterParam chroma;
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int hsub;
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@ -57,63 +59,63 @@ typedef struct {
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unsigned int sws_flags;
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} SmartblurContext;
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#define CHECK_PARAM(param, name, min, max, format, ret) \
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if (param < min || param > max) { \
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av_log(ctx, AV_LOG_ERROR, \
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"Invalid " #name " value " #format ": " \
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"must be included between range " #format " and " #format "\n",\
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param, min, max); \
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ret = AVERROR(EINVAL); \
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}
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#define OFFSET(x) offsetof(SmartblurContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption smartblur_options[] = {
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{ "luma_radius", "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
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{ "lr" , "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
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{ "luma_strength", "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
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{ "ls", "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
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{ "luma_threshold", "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT, {.i64=0}, THRESHOLD_MIN, THRESHOLD_MAX, .flags=FLAGS },
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{ "lt", "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT, {.i64=0}, THRESHOLD_MIN, THRESHOLD_MAX, .flags=FLAGS },
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{ "chroma_radius", "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
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{ "cr", "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
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{ "chroma_strength", "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
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{ "cs", "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
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{ "chroma_threshold", "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT, {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
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{ "ct", "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT, {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(smartblur);
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static av_cold int init(AVFilterContext *ctx, const char *args)
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{
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SmartblurContext *sblur = ctx->priv;
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int n = 0, ret = 0;
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float lradius, lstrength, cradius, cstrength;
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int lthreshold, cthreshold;
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int ret;
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static const char *shorthand[] = {
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"luma_radius", "luma_strength", "luma_threshold",
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"chroma_radius", "chroma_strength", "chroma_threshold",
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NULL
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};
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if (args)
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n = sscanf(args, "%f:%f:%d:%f:%f:%d",
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&lradius, &lstrength, <hreshold,
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&cradius, &cstrength, &cthreshold);
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sblur->class = &smartblur_class;
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av_opt_set_defaults(sblur);
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if (n != 3 && n != 6) {
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av_log(ctx, AV_LOG_ERROR,
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"Incorrect number of parameters or invalid syntax: "
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"must be luma_radius:luma_strength:luma_threshold"
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"[:chroma_radius:chroma_strength:chroma_threshold]\n");
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return AVERROR(EINVAL);
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}
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if ((ret = av_opt_set_from_string(sblur, args, shorthand, "=", ":")) < 0)
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return ret;
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sblur->luma.radius = lradius;
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sblur->luma.strength = lstrength;
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sblur->luma.threshold = lthreshold;
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if (n == 3) {
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sblur->chroma.radius = sblur->luma.radius;
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/* make chroma default to luma values, if not explicitly set */
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if (sblur->chroma.radius < RADIUS_MIN)
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sblur->chroma.radius = sblur->luma.radius;
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if (sblur->chroma.strength < STRENGTH_MIN)
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sblur->chroma.strength = sblur->luma.strength;
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if (sblur->chroma.threshold < THRESHOLD_MIN)
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sblur->chroma.threshold = sblur->luma.threshold;
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} else {
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sblur->chroma.radius = cradius;
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sblur->chroma.strength = cstrength;
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sblur->chroma.threshold = cthreshold;
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}
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sblur->luma.quality = sblur->chroma.quality = 3.0;
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sblur->sws_flags = SWS_BICUBIC;
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CHECK_PARAM(lradius, luma radius, RADIUS_MIN, RADIUS_MAX, %0.1f, ret)
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CHECK_PARAM(lstrength, luma strength, STRENGTH_MIN, STRENGTH_MAX, %0.1f, ret)
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CHECK_PARAM(lthreshold, luma threshold, THRESHOLD_MIN, THRESHOLD_MAX, %d, ret)
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av_log(ctx, AV_LOG_VERBOSE,
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"luma_radius:%f luma_strength:%f luma_threshold:%d "
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"chroma_radius:%f chroma_strength:%f chroma_threshold:%d ",
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sblur->luma.radius, sblur->luma.strength, sblur->luma.threshold,
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sblur->chroma.radius, sblur->chroma.strength, sblur->chroma.threshold);
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if (n != 3) {
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CHECK_PARAM(sblur->chroma.radius, chroma radius, RADIUS_MIN, RADIUS_MAX, %0.1f, ret)
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CHECK_PARAM(sblur->chroma.strength, chroma strength, STRENGTH_MIN, STRENGTH_MAX, %0.1f, ret)
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CHECK_PARAM(sblur->chroma.threshold, chroma threshold, THRESHOLD_MIN,THRESHOLD_MAX, %d, ret)
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}
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return ret;
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return 0;
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}
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static av_cold void uninit(AVFilterContext *ctx)
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@ -122,6 +124,7 @@ static av_cold void uninit(AVFilterContext *ctx)
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sws_freeContext(sblur->luma.filter_context);
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sws_freeContext(sblur->chroma.filter_context);
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av_opt_free(sblur);
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}
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static int query_formats(AVFilterContext *ctx)
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@ -310,4 +313,5 @@ AVFilter avfilter_vf_smartblur = {
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.query_formats = query_formats,
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.inputs = smartblur_inputs,
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.outputs = smartblur_outputs,
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.priv_class = &smartblur_class,
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};
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