2 * Copyright (c) 2015 Paul B Mahol
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/imgutils.h"
22 #include "libavutil/pixdesc.h"
23 #include "libavutil/opt.h"
28 #include "maskedmerge.h"
30 #define OFFSET(x) offsetof(MaskedMergeContext, x)
31 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
33 static const AVOption maskedmerge_options[] = {
34 { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
38 AVFILTER_DEFINE_CLASS(maskedmerge);
40 static int query_formats(AVFilterContext *ctx)
42 static const enum AVPixelFormat pix_fmts[] = {
43 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
44 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
45 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
46 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
47 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
48 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
49 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
50 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
51 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
52 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
53 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
54 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
55 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
56 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
57 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
61 return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
64 static int process_frame(FFFrameSync *fs)
66 AVFilterContext *ctx = fs->parent;
67 MaskedMergeContext *s = fs->opaque;
68 AVFilterLink *outlink = ctx->outputs[0];
69 AVFrame *out, *base, *overlay, *mask;
72 if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
73 (ret = ff_framesync_get_frame(&s->fs, 1, &overlay, 0)) < 0 ||
74 (ret = ff_framesync_get_frame(&s->fs, 2, &mask, 0)) < 0)
77 if (ctx->is_disabled) {
78 out = av_frame_clone(base);
80 return AVERROR(ENOMEM);
84 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
86 return AVERROR(ENOMEM);
87 av_frame_copy_props(out, base);
89 for (p = 0; p < s->nb_planes; p++) {
90 if (!((1 << p) & s->planes)) {
91 av_image_copy_plane(out->data[p], out->linesize[p], base->data[p], base->linesize[p],
92 s->width[p], s->height[p]);
96 s->maskedmerge(base->data[p], overlay->data[p],
97 mask->data[p], out->data[p],
98 base->linesize[p], overlay->linesize[p],
99 mask->linesize[p], out->linesize[p],
100 s->width[p], s->height[p],
104 out->pts = av_rescale_q(base->pts, s->fs.time_base, outlink->time_base);
106 return ff_filter_frame(outlink, out);
109 static void maskedmerge8(const uint8_t *bsrc, const uint8_t *osrc,
110 const uint8_t *msrc, uint8_t *dst,
111 ptrdiff_t blinesize, ptrdiff_t olinesize,
112 ptrdiff_t mlinesize, ptrdiff_t dlinesize,
118 for (y = 0; y < h; y++) {
119 for (x = 0; x < w; x++) {
120 dst[x] = bsrc[x] + ((msrc[x] * (osrc[x] - bsrc[x]) + 128) >> 8);
130 static void maskedmerge16(const uint8_t *bbsrc, const uint8_t *oosrc,
131 const uint8_t *mmsrc, uint8_t *ddst,
132 ptrdiff_t blinesize, ptrdiff_t olinesize,
133 ptrdiff_t mlinesize, ptrdiff_t dlinesize,
137 const uint16_t *bsrc = (const uint16_t *)bbsrc;
138 const uint16_t *osrc = (const uint16_t *)oosrc;
139 const uint16_t *msrc = (const uint16_t *)mmsrc;
140 uint16_t *dst = (uint16_t *)ddst;
143 for (y = 0; y < h; y++) {
144 for (x = 0; x < w; x++) {
145 dst[x] = bsrc[x] + ((msrc[x] * (osrc[x] - bsrc[x]) + half) >> shift);
148 dst += dlinesize / 2;
149 bsrc += blinesize / 2;
150 osrc += olinesize / 2;
151 msrc += mlinesize / 2;
155 static int config_input(AVFilterLink *inlink)
157 AVFilterContext *ctx = inlink->dst;
158 MaskedMergeContext *s = ctx->priv;
159 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
162 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
164 hsub = desc->log2_chroma_w;
165 vsub = desc->log2_chroma_h;
166 s->height[1] = s->height[2] = FF_CEIL_RSHIFT(inlink->h, vsub);
167 s->height[0] = s->height[3] = inlink->h;
168 s->width[1] = s->width[2] = FF_CEIL_RSHIFT(inlink->w, hsub);
169 s->width[0] = s->width[3] = inlink->w;
171 s->depth = desc->comp[0].depth;
172 s->half = (1 << s->depth) / 2;
174 if (desc->comp[0].depth == 8)
175 s->maskedmerge = maskedmerge8;
177 s->maskedmerge = maskedmerge16;
180 ff_maskedmerge_init_x86(s);
185 static int config_output(AVFilterLink *outlink)
187 AVFilterContext *ctx = outlink->src;
188 MaskedMergeContext *s = ctx->priv;
189 AVFilterLink *base = ctx->inputs[0];
190 AVFilterLink *overlay = ctx->inputs[1];
191 AVFilterLink *mask = ctx->inputs[2];
195 if (base->format != overlay->format ||
196 base->format != mask->format) {
197 av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
198 return AVERROR(EINVAL);
200 if (base->w != overlay->w ||
201 base->h != overlay->h ||
202 base->sample_aspect_ratio.num != overlay->sample_aspect_ratio.num ||
203 base->sample_aspect_ratio.den != overlay->sample_aspect_ratio.den ||
204 base->w != mask->w ||
205 base->h != mask->h ||
206 base->sample_aspect_ratio.num != mask->sample_aspect_ratio.num ||
207 base->sample_aspect_ratio.den != mask->sample_aspect_ratio.den) {
208 av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
209 "(size %dx%d, SAR %d:%d) do not match the corresponding "
210 "second input link %s parameters (%dx%d, SAR %d:%d) "
211 "and/or third input link %s parameters (%dx%d, SAR %d:%d)\n",
212 ctx->input_pads[0].name, base->w, base->h,
213 base->sample_aspect_ratio.num,
214 base->sample_aspect_ratio.den,
215 ctx->input_pads[1].name, overlay->w, overlay->h,
216 overlay->sample_aspect_ratio.num,
217 overlay->sample_aspect_ratio.den,
218 ctx->input_pads[2].name, mask->w, mask->h,
219 mask->sample_aspect_ratio.num,
220 mask->sample_aspect_ratio.den);
221 return AVERROR(EINVAL);
224 outlink->w = base->w;
225 outlink->h = base->h;
226 outlink->time_base = base->time_base;
227 outlink->sample_aspect_ratio = base->sample_aspect_ratio;
228 outlink->frame_rate = base->frame_rate;
230 if ((ret = ff_framesync_init(&s->fs, ctx, 3)) < 0)
234 in[0].time_base = base->time_base;
235 in[1].time_base = overlay->time_base;
236 in[2].time_base = mask->time_base;
238 in[0].before = EXT_STOP;
239 in[0].after = EXT_INFINITY;
241 in[1].before = EXT_STOP;
242 in[1].after = EXT_INFINITY;
244 in[2].before = EXT_STOP;
245 in[2].after = EXT_INFINITY;
247 s->fs.on_event = process_frame;
249 return ff_framesync_configure(&s->fs);
252 static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
254 MaskedMergeContext *s = inlink->dst->priv;
255 return ff_framesync_filter_frame(&s->fs, inlink, buf);
258 static int request_frame(AVFilterLink *outlink)
260 MaskedMergeContext *s = outlink->src->priv;
261 return ff_framesync_request_frame(&s->fs, outlink);
264 static av_cold void uninit(AVFilterContext *ctx)
266 MaskedMergeContext *s = ctx->priv;
268 ff_framesync_uninit(&s->fs);
271 static const AVFilterPad maskedmerge_inputs[] = {
274 .type = AVMEDIA_TYPE_VIDEO,
275 .filter_frame = filter_frame,
276 .config_props = config_input,
280 .type = AVMEDIA_TYPE_VIDEO,
281 .filter_frame = filter_frame,
285 .type = AVMEDIA_TYPE_VIDEO,
286 .filter_frame = filter_frame,
291 static const AVFilterPad maskedmerge_outputs[] = {
294 .type = AVMEDIA_TYPE_VIDEO,
295 .config_props = config_output,
296 .request_frame = request_frame,
301 AVFilter ff_vf_maskedmerge = {
302 .name = "maskedmerge",
303 .description = NULL_IF_CONFIG_SMALL("Merge first stream with second stream using third stream as mask."),
304 .priv_size = sizeof(MaskedMergeContext),
306 .query_formats = query_formats,
307 .inputs = maskedmerge_inputs,
308 .outputs = maskedmerge_outputs,
309 .priv_class = &maskedmerge_class,
310 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,