Commit | Line | Data |
---|---|---|
2ba45a60 DM |
1 | /* |
2 | * Original copyright (c) 2002 Remi Guyomarch <rguyom@pobox.com> | |
3 | * Port copyright (c) 2010 Daniel G. Taylor <dan@programmer-art.org> | |
4 | * Relicensed to the LGPL with permission from Remi Guyomarch. | |
5 | * | |
6 | * This file is part of FFmpeg. | |
7 | * | |
8 | * FFmpeg is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; either | |
11 | * version 2.1 of the License, or (at your option) any later version. | |
12 | * | |
13 | * FFmpeg is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with FFmpeg; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | /** | |
24 | * @file | |
25 | * blur / sharpen filter, ported to FFmpeg from MPlayer | |
26 | * libmpcodecs/unsharp.c. | |
27 | * | |
28 | * This code is based on: | |
29 | * | |
30 | * An Efficient algorithm for Gaussian blur using finite-state machines | |
31 | * Frederick M. Waltz and John W. V. Miller | |
32 | * | |
33 | * SPIE Conf. on Machine Vision Systems for Inspection and Metrology VII | |
34 | * Originally published Boston, Nov 98 | |
35 | * | |
36 | * http://www.engin.umd.umich.edu/~jwvm/ece581/21_GBlur.pdf | |
37 | */ | |
38 | ||
39 | #include "avfilter.h" | |
40 | #include "formats.h" | |
41 | #include "internal.h" | |
42 | #include "video.h" | |
43 | #include "libavutil/common.h" | |
44 | #include "libavutil/imgutils.h" | |
45 | #include "libavutil/mem.h" | |
46 | #include "libavutil/opt.h" | |
47 | #include "libavutil/pixdesc.h" | |
48 | #include "unsharp.h" | |
49 | #include "unsharp_opencl.h" | |
50 | ||
51 | static void apply_unsharp( uint8_t *dst, int dst_stride, | |
52 | const uint8_t *src, int src_stride, | |
53 | int width, int height, UnsharpFilterParam *fp) | |
54 | { | |
55 | uint32_t **sc = fp->sc; | |
56 | uint32_t sr[MAX_MATRIX_SIZE - 1], tmp1, tmp2; | |
57 | ||
58 | int32_t res; | |
59 | int x, y, z; | |
60 | const uint8_t *src2 = NULL; //silence a warning | |
61 | const int amount = fp->amount; | |
62 | const int steps_x = fp->steps_x; | |
63 | const int steps_y = fp->steps_y; | |
64 | const int scalebits = fp->scalebits; | |
65 | const int32_t halfscale = fp->halfscale; | |
66 | ||
67 | if (!amount) { | |
68 | av_image_copy_plane(dst, dst_stride, src, src_stride, width, height); | |
69 | return; | |
70 | } | |
71 | ||
72 | for (y = 0; y < 2 * steps_y; y++) | |
73 | memset(sc[y], 0, sizeof(sc[y][0]) * (width + 2 * steps_x)); | |
74 | ||
75 | for (y = -steps_y; y < height + steps_y; y++) { | |
76 | if (y < height) | |
77 | src2 = src; | |
78 | ||
79 | memset(sr, 0, sizeof(sr[0]) * (2 * steps_x - 1)); | |
80 | for (x = -steps_x; x < width + steps_x; x++) { | |
81 | tmp1 = x <= 0 ? src2[0] : x >= width ? src2[width-1] : src2[x]; | |
82 | for (z = 0; z < steps_x * 2; z += 2) { | |
83 | tmp2 = sr[z + 0] + tmp1; sr[z + 0] = tmp1; | |
84 | tmp1 = sr[z + 1] + tmp2; sr[z + 1] = tmp2; | |
85 | } | |
86 | for (z = 0; z < steps_y * 2; z += 2) { | |
87 | tmp2 = sc[z + 0][x + steps_x] + tmp1; sc[z + 0][x + steps_x] = tmp1; | |
88 | tmp1 = sc[z + 1][x + steps_x] + tmp2; sc[z + 1][x + steps_x] = tmp2; | |
89 | } | |
90 | if (x >= steps_x && y >= steps_y) { | |
91 | const uint8_t *srx = src - steps_y * src_stride + x - steps_x; | |
92 | uint8_t *dsx = dst - steps_y * dst_stride + x - steps_x; | |
93 | ||
94 | res = (int32_t)*srx + ((((int32_t) * srx - (int32_t)((tmp1 + halfscale) >> scalebits)) * amount) >> 16); | |
95 | *dsx = av_clip_uint8(res); | |
96 | } | |
97 | } | |
98 | if (y >= 0) { | |
99 | dst += dst_stride; | |
100 | src += src_stride; | |
101 | } | |
102 | } | |
103 | } | |
104 | ||
105 | static int apply_unsharp_c(AVFilterContext *ctx, AVFrame *in, AVFrame *out) | |
106 | { | |
107 | AVFilterLink *inlink = ctx->inputs[0]; | |
108 | UnsharpContext *unsharp = ctx->priv; | |
109 | int i, plane_w[3], plane_h[3]; | |
110 | UnsharpFilterParam *fp[3]; | |
111 | plane_w[0] = inlink->w; | |
112 | plane_w[1] = plane_w[2] = FF_CEIL_RSHIFT(inlink->w, unsharp->hsub); | |
113 | plane_h[0] = inlink->h; | |
114 | plane_h[1] = plane_h[2] = FF_CEIL_RSHIFT(inlink->h, unsharp->vsub); | |
115 | fp[0] = &unsharp->luma; | |
116 | fp[1] = fp[2] = &unsharp->chroma; | |
117 | for (i = 0; i < 3; i++) { | |
118 | apply_unsharp(out->data[i], out->linesize[i], in->data[i], in->linesize[i], plane_w[i], plane_h[i], fp[i]); | |
119 | } | |
120 | return 0; | |
121 | } | |
122 | ||
123 | static void set_filter_param(UnsharpFilterParam *fp, int msize_x, int msize_y, float amount) | |
124 | { | |
125 | fp->msize_x = msize_x; | |
126 | fp->msize_y = msize_y; | |
127 | fp->amount = amount * 65536.0; | |
128 | ||
129 | fp->steps_x = msize_x / 2; | |
130 | fp->steps_y = msize_y / 2; | |
131 | fp->scalebits = (fp->steps_x + fp->steps_y) * 2; | |
132 | fp->halfscale = 1 << (fp->scalebits - 1); | |
133 | } | |
134 | ||
135 | static av_cold int init(AVFilterContext *ctx) | |
136 | { | |
137 | int ret = 0; | |
138 | UnsharpContext *unsharp = ctx->priv; | |
139 | ||
140 | ||
141 | set_filter_param(&unsharp->luma, unsharp->lmsize_x, unsharp->lmsize_y, unsharp->lamount); | |
142 | set_filter_param(&unsharp->chroma, unsharp->cmsize_x, unsharp->cmsize_y, unsharp->camount); | |
143 | ||
144 | unsharp->apply_unsharp = apply_unsharp_c; | |
145 | if (!CONFIG_OPENCL && unsharp->opencl) { | |
146 | av_log(ctx, AV_LOG_ERROR, "OpenCL support was not enabled in this build, cannot be selected\n"); | |
147 | return AVERROR(EINVAL); | |
148 | } | |
149 | if (CONFIG_OPENCL && unsharp->opencl) { | |
150 | unsharp->apply_unsharp = ff_opencl_apply_unsharp; | |
151 | ret = ff_opencl_unsharp_init(ctx); | |
152 | if (ret < 0) | |
153 | return ret; | |
154 | } | |
155 | return 0; | |
156 | } | |
157 | ||
158 | static int query_formats(AVFilterContext *ctx) | |
159 | { | |
160 | static const enum AVPixelFormat pix_fmts[] = { | |
161 | AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV410P, | |
162 | AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, | |
163 | AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_NONE | |
164 | }; | |
165 | ||
166 | ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | static int init_filter_param(AVFilterContext *ctx, UnsharpFilterParam *fp, const char *effect_type, int width) | |
172 | { | |
173 | int z; | |
174 | const char *effect = fp->amount == 0 ? "none" : fp->amount < 0 ? "blur" : "sharpen"; | |
175 | ||
176 | if (!(fp->msize_x & fp->msize_y & 1)) { | |
177 | av_log(ctx, AV_LOG_ERROR, | |
178 | "Invalid even size for %s matrix size %dx%d\n", | |
179 | effect_type, fp->msize_x, fp->msize_y); | |
180 | return AVERROR(EINVAL); | |
181 | } | |
182 | ||
183 | av_log(ctx, AV_LOG_VERBOSE, "effect:%s type:%s msize_x:%d msize_y:%d amount:%0.2f\n", | |
184 | effect, effect_type, fp->msize_x, fp->msize_y, fp->amount / 65535.0); | |
185 | ||
186 | for (z = 0; z < 2 * fp->steps_y; z++) | |
187 | if (!(fp->sc[z] = av_malloc_array(width + 2 * fp->steps_x, | |
188 | sizeof(*(fp->sc[z]))))) | |
189 | return AVERROR(ENOMEM); | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | static int config_props(AVFilterLink *link) | |
195 | { | |
196 | UnsharpContext *unsharp = link->dst->priv; | |
197 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format); | |
198 | int ret; | |
199 | ||
200 | unsharp->hsub = desc->log2_chroma_w; | |
201 | unsharp->vsub = desc->log2_chroma_h; | |
202 | ||
203 | ret = init_filter_param(link->dst, &unsharp->luma, "luma", link->w); | |
204 | if (ret < 0) | |
205 | return ret; | |
206 | ret = init_filter_param(link->dst, &unsharp->chroma, "chroma", FF_CEIL_RSHIFT(link->w, unsharp->hsub)); | |
207 | if (ret < 0) | |
208 | return ret; | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | static void free_filter_param(UnsharpFilterParam *fp) | |
214 | { | |
215 | int z; | |
216 | ||
217 | for (z = 0; z < 2 * fp->steps_y; z++) | |
218 | av_free(fp->sc[z]); | |
219 | } | |
220 | ||
221 | static av_cold void uninit(AVFilterContext *ctx) | |
222 | { | |
223 | UnsharpContext *unsharp = ctx->priv; | |
224 | ||
225 | if (CONFIG_OPENCL && unsharp->opencl) { | |
226 | ff_opencl_unsharp_uninit(ctx); | |
227 | } | |
228 | ||
229 | free_filter_param(&unsharp->luma); | |
230 | free_filter_param(&unsharp->chroma); | |
231 | } | |
232 | ||
233 | static int filter_frame(AVFilterLink *link, AVFrame *in) | |
234 | { | |
235 | UnsharpContext *unsharp = link->dst->priv; | |
236 | AVFilterLink *outlink = link->dst->outputs[0]; | |
237 | AVFrame *out; | |
238 | int ret = 0; | |
239 | ||
240 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); | |
241 | if (!out) { | |
242 | av_frame_free(&in); | |
243 | return AVERROR(ENOMEM); | |
244 | } | |
245 | av_frame_copy_props(out, in); | |
246 | if (CONFIG_OPENCL && unsharp->opencl) { | |
247 | ret = ff_opencl_unsharp_process_inout_buf(link->dst, in, out); | |
248 | if (ret < 0) | |
249 | goto end; | |
250 | } | |
251 | ||
252 | ret = unsharp->apply_unsharp(link->dst, in, out); | |
253 | end: | |
254 | av_frame_free(&in); | |
255 | ||
256 | if (ret < 0) | |
257 | return ret; | |
258 | return ff_filter_frame(outlink, out); | |
259 | } | |
260 | ||
261 | #define OFFSET(x) offsetof(UnsharpContext, x) | |
262 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM | |
263 | #define MIN_SIZE 3 | |
264 | #define MAX_SIZE 63 | |
265 | static const AVOption unsharp_options[] = { | |
266 | { "luma_msize_x", "set luma matrix horizontal size", OFFSET(lmsize_x), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS }, | |
267 | { "lx", "set luma matrix horizontal size", OFFSET(lmsize_x), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS }, | |
268 | { "luma_msize_y", "set luma matrix vertical size", OFFSET(lmsize_y), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS }, | |
269 | { "ly", "set luma matrix vertical size", OFFSET(lmsize_y), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS }, | |
270 | { "luma_amount", "set luma effect strength", OFFSET(lamount), AV_OPT_TYPE_FLOAT, { .dbl = 1 }, -2, 5, FLAGS }, | |
271 | { "la", "set luma effect strength", OFFSET(lamount), AV_OPT_TYPE_FLOAT, { .dbl = 1 }, -2, 5, FLAGS }, | |
272 | { "chroma_msize_x", "set chroma matrix horizontal size", OFFSET(cmsize_x), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS }, | |
273 | { "cx", "set chroma matrix horizontal size", OFFSET(cmsize_x), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS }, | |
274 | { "chroma_msize_y", "set chroma matrix vertical size", OFFSET(cmsize_y), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS }, | |
275 | { "cy", "set chroma matrix vertical size", OFFSET(cmsize_y), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS }, | |
276 | { "chroma_amount", "set chroma effect strength", OFFSET(camount), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, -2, 5, FLAGS }, | |
277 | { "ca", "set chroma effect strength", OFFSET(camount), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, -2, 5, FLAGS }, | |
278 | { "opencl", "use OpenCL filtering capabilities", OFFSET(opencl), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS }, | |
279 | { NULL } | |
280 | }; | |
281 | ||
282 | AVFILTER_DEFINE_CLASS(unsharp); | |
283 | ||
284 | static const AVFilterPad avfilter_vf_unsharp_inputs[] = { | |
285 | { | |
286 | .name = "default", | |
287 | .type = AVMEDIA_TYPE_VIDEO, | |
288 | .filter_frame = filter_frame, | |
289 | .config_props = config_props, | |
290 | }, | |
291 | { NULL } | |
292 | }; | |
293 | ||
294 | static const AVFilterPad avfilter_vf_unsharp_outputs[] = { | |
295 | { | |
296 | .name = "default", | |
297 | .type = AVMEDIA_TYPE_VIDEO, | |
298 | }, | |
299 | { NULL } | |
300 | }; | |
301 | ||
302 | AVFilter ff_vf_unsharp = { | |
303 | .name = "unsharp", | |
304 | .description = NULL_IF_CONFIG_SMALL("Sharpen or blur the input video."), | |
305 | .priv_size = sizeof(UnsharpContext), | |
306 | .priv_class = &unsharp_class, | |
307 | .init = init, | |
308 | .uninit = uninit, | |
309 | .query_formats = query_formats, | |
310 | .inputs = avfilter_vf_unsharp_inputs, | |
311 | .outputs = avfilter_vf_unsharp_outputs, | |
312 | .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, | |
313 | }; |