FFmpeg: libavfilter/vf_mergeplanes.c Source File

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libavfilter

vf_mergeplanes.c

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1 /*

3 *

4 * This file is part of FFmpeg.

5 *

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.

10 *

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.

15 *

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

19 */

21 #include "libavutil/avassert.h"

22 #include "libavutil/avstring.h"

23 #include "libavutil/imgutils.h"

24 #include "libavutil/opt.h"

25 #include "libavutil/pixdesc.h"

26 #include "avfilter.h"

27 #include "internal.h"

28 #include "framesync.h"

30 typedef struct InputParam {

31 int depth[4];

32 int nb_planes;

33 int planewidth[4];

34 int planeheight[4];

35 } InputParam;

37 typedef struct MergePlanesContext {

38 const AVClass *class;

39 int64_t mapping;

40 const enum AVPixelFormat out_fmt;

41 int nb_inputs;

42 int nb_planes;

43 int planewidth[4];

44 int planeheight[4];

45 int map[4][2];

46 const AVPixFmtDescriptor *outdesc;

48 FFFrameSync fs;

49 FFFrameSyncIn fsin[3]; /* must be immediately after fs */

50 } MergePlanesContext;

52 #define OFFSET(x) offsetof(MergePlanesContext, x)

53 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

54 static const AVOption mergeplanes_options[] = {

55 { "mapping", "set input to output plane mapping", OFFSET(mapping), AV_OPT_TYPE_INT, {.i64=0}, 0, 0x33333333, FLAGS },

56 { "format", "set output pixel format", OFFSET(out_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64=AV_PIX_FMT_YUVA444P}, 0, INT_MAX, .flags=FLAGS },

57 { NULL }

58 };

60 AVFILTER_DEFINE_CLASS(mergeplanes);

62 static int filter_frame(AVFilterLink *inlink, AVFrame *in)

63 {

64 MergePlanesContext *s = inlink->dst->priv;

65 return ff_framesync_filter_frame(&s->fs, inlink, in);

66 }

68 static av_cold int init(AVFilterContext *ctx)

69 {

70 MergePlanesContext *s = ctx->priv;

71 int64_t m = s->mapping;

72 int i, ret;

74 s->outdesc = av_pix_fmt_desc_get(s->out_fmt);

75 if (!(s->outdesc->flags & AV_PIX_FMT_FLAG_PLANAR) ||

76 s->outdesc->nb_components < 2) {

77 av_log(ctx, AV_LOG_ERROR, "Only planar formats with more than one component are supported.\n");

78 return AVERROR(EINVAL);

79 }

80 s->nb_planes = av_pix_fmt_count_planes(s->out_fmt);

82 for (i = s->nb_planes - 1; i >= 0; i--) {

83 s->map[i][0] = m & 0xf;

84 m >>= 4;

85 s->map[i][1] = m & 0xf;

86 m >>= 4;

88 if (s->map[i][0] > 3 || s->map[i][1] > 3) {

89 av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n");

90 return AVERROR(EINVAL);

91 }

93 s->nb_inputs = FFMAX(s->nb_inputs, s->map[i][1] + 1);

94 }

96 av_assert0(s->nb_inputs && s->nb_inputs <= 4);

98 for (i = 0; i < s->nb_inputs; i++) {

99 AVFilterPad pad = { 0 };

100

101 pad.type = AVMEDIA_TYPE_VIDEO;

102 pad.name = av_asprintf("in%d", i);

103 if (!pad.name)

104 return AVERROR(ENOMEM);

105 pad.filter_frame = filter_frame;

106

107 if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0){

108 av_freep(&pad.name);

109 return ret;

110 }

111 }

112

113 return 0;

114 }

115

116 static int query_formats(AVFilterContext *ctx)

117 {

118 MergePlanesContext *s = ctx->priv;

119 AVFilterFormats *formats = NULL;

120 int i;

121

122 s->outdesc = av_pix_fmt_desc_get(s->out_fmt);

123 for (i = 0; av_pix_fmt_desc_get(i); i++) {

124 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);

125 if (desc->comp[0].depth_minus1 == s->outdesc->comp[0].depth_minus1 &&

126 av_pix_fmt_count_planes(i) == desc->nb_components)

127 ff_add_format(&formats, i);

128 }

129

130 for (i = 0; i < s->nb_inputs; i++)

131 ff_formats_ref(formats, &ctx->inputs[i]->out_formats);

132

133 formats = NULL;

134 ff_add_format(&formats, s->out_fmt);

135 ff_formats_ref(formats, &ctx->outputs[0]->in_formats);

136

137 return 0;

138 }

139

140 static int process_frame(FFFrameSync *fs)

141 {

142 AVFilterContext *ctx = fs->parent;

143 AVFilterLink *outlink = ctx->outputs[0];

144 MergePlanesContext *s = fs->opaque;

145 AVFrame *in[4] = { NULL };

146 AVFrame *out;

147 int i, ret;

148

149 for (i = 0; i < s->nb_inputs; i++) {

150 if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)

151 return ret;

152 }

153

154 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);

155 if (!out)

156 return AVERROR(ENOMEM);

157 out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);

158

159 for (i = 0; i < s->nb_planes; i++) {

160 const int input = s->map[i][1];

161 const int plane = s->map[i][0];

162

163 av_image_copy_plane(out->data[i], out->linesize[i],

164 in[input]->data[plane], in[input]->linesize[plane],

165 s->planewidth[i], s->planeheight[i]);

166 }

167

168 return ff_filter_frame(outlink, out);

169 }

170

171 static int config_output(AVFilterLink *outlink)

172 {

173 AVFilterContext *ctx = outlink->src;

174 MergePlanesContext *s = ctx->priv;

175 InputParam inputsp[4];

176 FFFrameSyncIn *in;

177 int i;

178

179 ff_framesync_init(&s->fs, ctx, s->nb_inputs);

180 in = s->fs.in;

181 s->fs.opaque = s;

182 s->fs.on_event = process_frame;

183

184 outlink->w = ctx->inputs[0]->w;

185 outlink->h = ctx->inputs[0]->h;

186 outlink->time_base = ctx->inputs[0]->time_base;

187 outlink->frame_rate = ctx->inputs[0]->frame_rate;

188 outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio;

189

190 s->planewidth[1] =

191 s->planewidth[2] = FF_CEIL_RSHIFT(outlink->w, s->outdesc->log2_chroma_w);

192 s->planewidth[0] =

193 s->planewidth[3] = outlink->w;

194 s->planeheight[1] =

195 s->planeheight[2] = FF_CEIL_RSHIFT(outlink->h, s->outdesc->log2_chroma_h);

196 s->planeheight[0] =

197 s->planeheight[3] = outlink->h;

198

199 for (i = 0; i < s->nb_inputs; i++) {

200 InputParam *inputp = &inputsp[i];

201 AVFilterLink *inlink = ctx->inputs[i];

202 const AVPixFmtDescriptor *indesc = av_pix_fmt_desc_get(inlink->format);

203 int j;

204

205 if (outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||

206 outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {

207 av_log(ctx, AV_LOG_ERROR, "input #%d link %s SAR %d:%d "

208 "does not match output link %s SAR %d:%d\n",

209 i, ctx->input_pads[i].name,

210 inlink->sample_aspect_ratio.num,

211 inlink->sample_aspect_ratio.den,

212 ctx->output_pads[0].name,

213 outlink->sample_aspect_ratio.num,

214 outlink->sample_aspect_ratio.den);

215 return AVERROR(EINVAL);

216 }

217

218 inputp->planewidth[1] =

219 inputp->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, indesc->log2_chroma_w);

220 inputp->planewidth[0] =

221 inputp->planewidth[3] = inlink->w;

222 inputp->planeheight[1] =

223 inputp->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, indesc->log2_chroma_h);

224 inputp->planeheight[0] =

225 inputp->planeheight[3] = inlink->h;

226 inputp->nb_planes = av_pix_fmt_count_planes(inlink->format);

227

228 for (j = 0; j < inputp->nb_planes; j++)

229 inputp->depth[j] = indesc->comp[j].depth_minus1 + 1;

230

231 in[i].time_base = inlink->time_base;

232 in[i].sync = 1;

233 in[i].before = EXT_STOP;

234 in[i].after = EXT_STOP;

235 }

236

237 for (i = 0; i < s->nb_planes; i++) {

238 const int input = s->map[i][1];

239 const int plane = s->map[i][0];

240 InputParam *inputp = &inputsp[input];

241

242 if (plane + 1 > inputp->nb_planes) {

243 av_log(ctx, AV_LOG_ERROR, "input %d does not have %d plane\n",

244 input, plane);

245 goto fail;

246 }

247 if (s->outdesc->comp[i].depth_minus1 + 1 != inputp->depth[plane]) {

248 av_log(ctx, AV_LOG_ERROR, "output plane %d depth %d does not "

249 "match input %d plane %d depth %d\n",

250 i, s->outdesc->comp[i].depth_minus1 + 1,

251 input, plane, inputp->depth[plane]);

252 goto fail;

253 }

254 if (s->planewidth[i] != inputp->planewidth[plane]) {

255 av_log(ctx, AV_LOG_ERROR, "output plane %d width %d does not "

256 "match input %d plane %d width %d\n",

257 i, s->planewidth[i],

258 input, plane, inputp->planewidth[plane]);

259 goto fail;

260 }

261 if (s->planeheight[i] != inputp->planeheight[plane]) {

262 av_log(ctx, AV_LOG_ERROR, "output plane %d height %d does not "

263 "match input %d plane %d height %d\n",

264 i, s->planeheight[i],

265 input, plane, inputp->planeheight[plane]);

266 goto fail;

267 }

268 }

269

270 return ff_framesync_configure(&s->fs);

271 fail:

272 return AVERROR(EINVAL);

273 }

274

275 static int request_frame(AVFilterLink *outlink)

276 {

277 MergePlanesContext *s = outlink->src->priv;

278 return ff_framesync_request_frame(&s->fs, outlink);

279 }

280

281 static av_cold void uninit(AVFilterContext *ctx)

282 {

283 MergePlanesContext *s = ctx->priv;

284 int i;

285

286 ff_framesync_uninit(&s->fs);

287

288 for (i = 0; i < ctx->nb_inputs; i++)

289 av_freep(&ctx->input_pads[i].name);

290 }

291

292 static const AVFilterPad mergeplanes_outputs[] = {

293 {

294 .name = "default",

295 .type = AVMEDIA_TYPE_VIDEO,

296 .config_props = config_output,

297 .request_frame = request_frame,

298 },

299 { NULL }

300 };

301

302 AVFilter ff_vf_mergeplanes = {

303 .name = "mergeplanes",

304 .description = NULL_IF_CONFIG_SMALL("Merge planes."),

305 .priv_size = sizeof(MergePlanesContext),

306 .priv_class = &mergeplanes_class,

307 .init = init,

308 .uninit = uninit,

309 .query_formats = query_formats,

310 .inputs = NULL,

311 .outputs = mergeplanes_outputs,

312 .flags = AVFILTER_FLAG_DYNAMIC_INPUTS,

313 };

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