[deb_ffmpeg.git] / ffmpeg / libavfilter / vf_smartblur.c

/*
 * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
 * Copyright (c) 2012 Jeremy Tran
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/**
 * @file
 * Apply a smartblur filter to the input video
 * Ported from MPlayer libmpcodecs/vf_smartblur.c by Michael Niedermayer.
 */

#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libswscale/swscale.h"

#include "avfilter.h"
#include "formats.h"
#include "internal.h"

#define RADIUS_MIN 0.1
#define RADIUS_MAX 5.0

#define STRENGTH_MIN -1.0
#define STRENGTH_MAX 1.0

#define THRESHOLD_MIN -30
#define THRESHOLD_MAX 30

typedef struct {
    float              radius;
    float              strength;
    int                threshold;
    float              quality;
    struct SwsContext *filter_context;
} FilterParam;

typedef struct {
    const AVClass *class;
    FilterParam  luma;
    FilterParam  chroma;
    int          hsub;
    int          vsub;
    unsigned int sws_flags;
} SmartblurContext;

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

static const AVOption smartblur_options[] = {
    { "luma_radius",    "set luma radius",    OFFSET(luma.radius),    AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
    { "lr"         ,    "set luma radius",    OFFSET(luma.radius),    AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
    { "luma_strength",  "set luma strength",  OFFSET(luma.strength),  AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
    { "ls",             "set luma strength",  OFFSET(luma.strength),  AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
    { "luma_threshold", "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT,   {.i64=0}, THRESHOLD_MIN, THRESHOLD_MAX, .flags=FLAGS },
    { "lt",             "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT,   {.i64=0}, THRESHOLD_MIN, THRESHOLD_MAX, .flags=FLAGS },

    { "chroma_radius",    "set chroma radius",    OFFSET(chroma.radius),    AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1},   RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
    { "cr",               "set chroma radius",    OFFSET(chroma.radius),    AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1},   RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
    { "chroma_strength",  "set chroma strength",  OFFSET(chroma.strength),  AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
    { "cs",               "set chroma strength",  OFFSET(chroma.strength),  AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
    { "chroma_threshold", "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT,   {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
    { "ct",               "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT,   {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },

    { NULL }
};

AVFILTER_DEFINE_CLASS(smartblur);

static av_cold int init(AVFilterContext *ctx)
{
    SmartblurContext *sblur = ctx->priv;

    /* make chroma default to luma values, if not explicitly set */
    if (sblur->chroma.radius < RADIUS_MIN)
        sblur->chroma.radius = sblur->luma.radius;
    if (sblur->chroma.strength < STRENGTH_MIN)
        sblur->chroma.strength  = sblur->luma.strength;
    if (sblur->chroma.threshold < THRESHOLD_MIN)
        sblur->chroma.threshold = sblur->luma.threshold;

    sblur->luma.quality = sblur->chroma.quality = 3.0;
    sblur->sws_flags = SWS_BICUBIC;

    av_log(ctx, AV_LOG_VERBOSE,
           "luma_radius:%f luma_strength:%f luma_threshold:%d "
           "chroma_radius:%f chroma_strength:%f chroma_threshold:%d\n",
           sblur->luma.radius, sblur->luma.strength, sblur->luma.threshold,
           sblur->chroma.radius, sblur->chroma.strength, sblur->chroma.threshold);

    return 0;
}

static av_cold void uninit(AVFilterContext *ctx)
{
    SmartblurContext *sblur = ctx->priv;

    sws_freeContext(sblur->luma.filter_context);
    sws_freeContext(sblur->chroma.filter_context);
}

static int query_formats(AVFilterContext *ctx)
{
    static const enum AVPixelFormat pix_fmts[] = {
        AV_PIX_FMT_YUV444P,      AV_PIX_FMT_YUV422P,
        AV_PIX_FMT_YUV420P,      AV_PIX_FMT_YUV411P,
        AV_PIX_FMT_YUV410P,      AV_PIX_FMT_YUV440P,
        AV_PIX_FMT_GRAY8,
        AV_PIX_FMT_NONE
    };

    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));

    return 0;
}

static int alloc_sws_context(FilterParam *f, int width, int height, unsigned int flags)
{
    SwsVector *vec;
    SwsFilter sws_filter;

    vec = sws_getGaussianVec(f->radius, f->quality);

    if (!vec)
        return AVERROR(EINVAL);

    sws_scaleVec(vec, f->strength);
    vec->coeff[vec->length / 2] += 1.0 - f->strength;
    sws_filter.lumH = sws_filter.lumV = vec;
    sws_filter.chrH = sws_filter.chrV = NULL;
    f->filter_context = sws_getCachedContext(NULL,
                                             width, height, AV_PIX_FMT_GRAY8,
                                             width, height, AV_PIX_FMT_GRAY8,
                                             flags, &sws_filter, NULL, NULL);

    sws_freeVec(vec);

    if (!f->filter_context)
        return AVERROR(EINVAL);

    return 0;
}

static int config_props(AVFilterLink *inlink)
{
    SmartblurContext *sblur = inlink->dst->priv;
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);

    sblur->hsub = desc->log2_chroma_w;
    sblur->vsub = desc->log2_chroma_h;

    alloc_sws_context(&sblur->luma, inlink->w, inlink->h, sblur->sws_flags);
    alloc_sws_context(&sblur->chroma,
                      FF_CEIL_RSHIFT(inlink->w, sblur->hsub),
                      FF_CEIL_RSHIFT(inlink->h, sblur->vsub),
                      sblur->sws_flags);

    return 0;
}

static void blur(uint8_t       *dst, const int dst_linesize,
                 const uint8_t *src, const int src_linesize,
                 const int w, const int h, const int threshold,
                 struct SwsContext *filter_context)
{
    int x, y;
    int orig, filtered;
    int diff;
    /* Declare arrays of 4 to get aligned data */
    const uint8_t* const src_array[4] = {src};
    uint8_t *dst_array[4]             = {dst};
    int src_linesize_array[4] = {src_linesize};
    int dst_linesize_array[4] = {dst_linesize};

    sws_scale(filter_context, src_array, src_linesize_array,
              0, h, dst_array, dst_linesize_array);

    if (threshold > 0) {
        for (y = 0; y < h; ++y) {
            for (x = 0; x < w; ++x) {
                orig     = src[x + y * src_linesize];
                filtered = dst[x + y * dst_linesize];
                diff     = orig - filtered;

                if (diff > 0) {
                    if (diff > 2 * threshold)
                        dst[x + y * dst_linesize] = orig;
                    else if (diff > threshold)
                        /* add 'diff' and subtract 'threshold' from 'filtered' */
                        dst[x + y * dst_linesize] = orig - threshold;
                } else {
                    if (-diff > 2 * threshold)
                        dst[x + y * dst_linesize] = orig;
                    else if (-diff > threshold)
                        /* add 'diff' and 'threshold' to 'filtered' */
                        dst[x + y * dst_linesize] = orig + threshold;
                }
            }
        }
    } else if (threshold < 0) {
        for (y = 0; y < h; ++y) {
            for (x = 0; x < w; ++x) {
                orig     = src[x + y * src_linesize];
                filtered = dst[x + y * dst_linesize];
                diff     = orig - filtered;

                if (diff > 0) {
                    if (diff <= -threshold)
                        dst[x + y * dst_linesize] = orig;
                    else if (diff <= -2 * threshold)
                        /* subtract 'diff' and 'threshold' from 'orig' */
                        dst[x + y * dst_linesize] = filtered - threshold;
                } else {
                    if (diff >= threshold)
                        dst[x + y * dst_linesize] = orig;
                    else if (diff >= 2 * threshold)
                        /* add 'threshold' and subtract 'diff' from 'orig' */
                        dst[x + y * dst_linesize] = filtered + threshold;
                }
            }
        }
    }
}

static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
{
    SmartblurContext  *sblur  = inlink->dst->priv;
    AVFilterLink *outlink     = inlink->dst->outputs[0];
    AVFrame *outpic;
    int cw = FF_CEIL_RSHIFT(inlink->w, sblur->hsub);
    int ch = FF_CEIL_RSHIFT(inlink->h, sblur->vsub);

    outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
    if (!outpic) {
        av_frame_free(&inpic);
        return AVERROR(ENOMEM);
    }
    av_frame_copy_props(outpic, inpic);

    blur(outpic->data[0], outpic->linesize[0],
         inpic->data[0],  inpic->linesize[0],
         inlink->w, inlink->h, sblur->luma.threshold,
         sblur->luma.filter_context);

    if (inpic->data[2]) {
        blur(outpic->data[1], outpic->linesize[1],
             inpic->data[1],  inpic->linesize[1],
             cw, ch, sblur->chroma.threshold,
             sblur->chroma.filter_context);
        blur(outpic->data[2], outpic->linesize[2],
             inpic->data[2],  inpic->linesize[2],
             cw, ch, sblur->chroma.threshold,
             sblur->chroma.filter_context);
    }

    av_frame_free(&inpic);
    return ff_filter_frame(outlink, outpic);
}

static const AVFilterPad smartblur_inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
        .config_props = config_props,
    },
    { NULL }
};

static const AVFilterPad smartblur_outputs[] = {
    {
        .name = "default",
        .type = AVMEDIA_TYPE_VIDEO,
    },
    { NULL }
};

AVFilter ff_vf_smartblur = {
    .name          = "smartblur",
    .description   = NULL_IF_CONFIG_SMALL("Blur the input video without impacting the outlines."),
    .priv_size     = sizeof(SmartblurContext),
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = smartblur_inputs,
    .outputs       = smartblur_outputs,
    .priv_class    = &smartblur_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
	3	* Copyright (c) 2012 Jeremy Tran
	4	*
	5	* This file is part of FFmpeg.
	6	*
	7	* FFmpeg is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* FFmpeg is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License along
	18	* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
	19	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	20	*/
	21
	22	/**
	23	* @file
	24	* Apply a smartblur filter to the input video
	25	* Ported from MPlayer libmpcodecs/vf_smartblur.c by Michael Niedermayer.
	26	*/
	27
	28	#include "libavutil/opt.h"
	29	#include "libavutil/pixdesc.h"
	30	#include "libswscale/swscale.h"
	31
	32	#include "avfilter.h"
	33	#include "formats.h"
	34	#include "internal.h"
	35
	36	#define RADIUS_MIN 0.1
	37	#define RADIUS_MAX 5.0
	38
	39	#define STRENGTH_MIN -1.0
	40	#define STRENGTH_MAX 1.0
	41
	42	#define THRESHOLD_MIN -30
	43	#define THRESHOLD_MAX 30
	44
	45	typedef struct {
	46	float radius;
	47	float strength;
	48	int threshold;
	49	float quality;
	50	struct SwsContext *filter_context;
	51	} FilterParam;
	52
	53	typedef struct {
	54	const AVClass *class;
	55	FilterParam luma;
	56	FilterParam chroma;
	57	int hsub;
	58	int vsub;
	59	unsigned int sws_flags;
	60	} SmartblurContext;
	61
	62	#define OFFSET(x) offsetof(SmartblurContext, x)
	63	#define FLAGS AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM
	64
65	static const AVOption smartblur_options[] = {
66	{ "luma_radius", "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
67	{ "lr" , "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
68	{ "luma_strength", "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
69	{ "ls", "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
70	{ "luma_threshold", "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT, {.i64=0}, THRESHOLD_MIN, THRESHOLD_MAX, .flags=FLAGS },
71	{ "lt", "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT, {.i64=0}, THRESHOLD_MIN, THRESHOLD_MAX, .flags=FLAGS },
72
73	{ "chroma_radius", "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
74	{ "cr", "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
75	{ "chroma_strength", "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
76	{ "cs", "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
77	{ "chroma_threshold", "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT, {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
78	{ "ct", "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT, {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
79
80	{ NULL }
81	};
82
83	AVFILTER_DEFINE_CLASS(smartblur);
84
85	static av_cold int init(AVFilterContext *ctx)
86	{
87	SmartblurContext *sblur = ctx->priv;
88
89	/* make chroma default to luma values, if not explicitly set */
90	if (sblur->chroma.radius < RADIUS_MIN)
91	sblur->chroma.radius = sblur->luma.radius;
92	if (sblur->chroma.strength < STRENGTH_MIN)
93	sblur->chroma.strength = sblur->luma.strength;
94	if (sblur->chroma.threshold < THRESHOLD_MIN)
95	sblur->chroma.threshold = sblur->luma.threshold;
96
97	sblur->luma.quality = sblur->chroma.quality = 3.0;
98	sblur->sws_flags = SWS_BICUBIC;
99
100	av_log(ctx, AV_LOG_VERBOSE,
101	"luma_radius:%f luma_strength:%f luma_threshold:%d "
102	"chroma_radius:%f chroma_strength:%f chroma_threshold:%d\n",
103	sblur->luma.radius, sblur->luma.strength, sblur->luma.threshold,
104	sblur->chroma.radius, sblur->chroma.strength, sblur->chroma.threshold);
105
106	return 0;
107	}
108
109	static av_cold void uninit(AVFilterContext *ctx)
110	{
111	SmartblurContext *sblur = ctx->priv;
112
113	sws_freeContext(sblur->luma.filter_context);
114	sws_freeContext(sblur->chroma.filter_context);
115	}
116
117	static int query_formats(AVFilterContext *ctx)
118	{
119	static const enum AVPixelFormat pix_fmts[] = {
120	AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
121	AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
122	AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
123	AV_PIX_FMT_GRAY8,
124	AV_PIX_FMT_NONE
125	};
126
127	ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
128
129	return 0;
130	}
131
132	static int alloc_sws_context(FilterParam *f, int width, int height, unsigned int flags)
133	{
134	SwsVector *vec;
135	SwsFilter sws_filter;
136
137	vec = sws_getGaussianVec(f->radius, f->quality);
138
139	if (!vec)
140	return AVERROR(EINVAL);
141
142	sws_scaleVec(vec, f->strength);
143	vec->coeff[vec->length / 2] += 1.0 - f->strength;
144	sws_filter.lumH = sws_filter.lumV = vec;
145	sws_filter.chrH = sws_filter.chrV = NULL;
146	f->filter_context = sws_getCachedContext(NULL,
147	width, height, AV_PIX_FMT_GRAY8,
148	width, height, AV_PIX_FMT_GRAY8,
149	flags, &sws_filter, NULL, NULL);
150
151	sws_freeVec(vec);
152
153	if (!f->filter_context)
154	return AVERROR(EINVAL);
155
156	return 0;
157	}
158
159	static int config_props(AVFilterLink *inlink)
160	{
161	SmartblurContext *sblur = inlink->dst->priv;
162	const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
163
164	sblur->hsub = desc->log2_chroma_w;
165	sblur->vsub = desc->log2_chroma_h;
166
167	alloc_sws_context(&sblur->luma, inlink->w, inlink->h, sblur->sws_flags);
168	alloc_sws_context(&sblur->chroma,
169	FF_CEIL_RSHIFT(inlink->w, sblur->hsub),
170	FF_CEIL_RSHIFT(inlink->h, sblur->vsub),
171	sblur->sws_flags);
172
173	return 0;
174	}
175
176	static void blur(uint8_t *dst, const int dst_linesize,
177	const uint8_t *src, const int src_linesize,
178	const int w, const int h, const int threshold,
179	struct SwsContext *filter_context)
180	{
181	int x, y;
182	int orig, filtered;
183	int diff;
184	/* Declare arrays of 4 to get aligned data */
185	const uint8_t* const src_array[4] = {src};
186	uint8_t *dst_array[4] = {dst};
187	int src_linesize_array[4] = {src_linesize};
188	int dst_linesize_array[4] = {dst_linesize};
189
190	sws_scale(filter_context, src_array, src_linesize_array,
191	0, h, dst_array, dst_linesize_array);
192
193	if (threshold > 0) {
194	for (y = 0; y < h; ++y) {
195	for (x = 0; x < w; ++x) {
196	orig = src[x + y * src_linesize];
197	filtered = dst[x + y * dst_linesize];
198	diff = orig - filtered;
199
200	if (diff > 0) {
201	if (diff > 2 * threshold)
202	dst[x + y * dst_linesize] = orig;
203	else if (diff > threshold)
204	/* add 'diff' and subtract 'threshold' from 'filtered' */
205	dst[x + y * dst_linesize] = orig - threshold;
206	} else {
207	if (-diff > 2 * threshold)
208	dst[x + y * dst_linesize] = orig;
209	else if (-diff > threshold)
210	/* add 'diff' and 'threshold' to 'filtered' */
211	dst[x + y * dst_linesize] = orig + threshold;
212	}
213	}
214	}
215	} else if (threshold < 0) {
216	for (y = 0; y < h; ++y) {
217	for (x = 0; x < w; ++x) {
218	orig = src[x + y * src_linesize];
219	filtered = dst[x + y * dst_linesize];
220	diff = orig - filtered;
221
222	if (diff > 0) {
223	if (diff <= -threshold)
224	dst[x + y * dst_linesize] = orig;
225	else if (diff <= -2 * threshold)
226	/* subtract 'diff' and 'threshold' from 'orig' */
227	dst[x + y * dst_linesize] = filtered - threshold;
228	} else {
229	if (diff >= threshold)
230	dst[x + y * dst_linesize] = orig;
231	else if (diff >= 2 * threshold)
232	/* add 'threshold' and subtract 'diff' from 'orig' */
233	dst[x + y * dst_linesize] = filtered + threshold;
234	}
235	}
236	}
237	}
238	}
239
240	static int filter_frame(AVFilterLink inlink, AVFrame inpic)
241	{
242	SmartblurContext *sblur = inlink->dst->priv;
243	AVFilterLink *outlink = inlink->dst->outputs[0];
244	AVFrame *outpic;
245	int cw = FF_CEIL_RSHIFT(inlink->w, sblur->hsub);
246	int ch = FF_CEIL_RSHIFT(inlink->h, sblur->vsub);
247
248	outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
249	if (!outpic) {
250	av_frame_free(&inpic);
251	return AVERROR(ENOMEM);
252	}
253	av_frame_copy_props(outpic, inpic);
254
255	blur(outpic->data[0], outpic->linesize[0],
256	inpic->data[0], inpic->linesize[0],
257	inlink->w, inlink->h, sblur->luma.threshold,
258	sblur->luma.filter_context);
259
260	if (inpic->data[2]) {
261	blur(outpic->data[1], outpic->linesize[1],
262	inpic->data[1], inpic->linesize[1],
263	cw, ch, sblur->chroma.threshold,
264	sblur->chroma.filter_context);
265	blur(outpic->data[2], outpic->linesize[2],
266	inpic->data[2], inpic->linesize[2],
267	cw, ch, sblur->chroma.threshold,
268	sblur->chroma.filter_context);
269	}
270
271	av_frame_free(&inpic);
272	return ff_filter_frame(outlink, outpic);
273	}
274
275	static const AVFilterPad smartblur_inputs[] = {
276	{
277	.name = "default",
278	.type = AVMEDIA_TYPE_VIDEO,
279	.filter_frame = filter_frame,
280	.config_props = config_props,
281	},
282	{ NULL }
283	};
284
285	static const AVFilterPad smartblur_outputs[] = {
286	{
287	.name = "default",
288	.type = AVMEDIA_TYPE_VIDEO,
289	},
290	{ NULL }
291	};
292
293	AVFilter ff_vf_smartblur = {
294	.name = "smartblur",
295	.description = NULL_IF_CONFIG_SMALL("Blur the input video without impacting the outlines."),
296	.priv_size = sizeof(SmartblurContext),
297	.init = init,
298	.uninit = uninit,
299	.query_formats = query_formats,
300	.inputs = smartblur_inputs,
301	.outputs = smartblur_outputs,
302	.priv_class = &smartblur_class,
303	.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
304	};