| 1 | /* |
| 2 | * ffmpeg filter configuration |
| 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 | */ |
| 20 | |
| 21 | #include <stdint.h> |
| 22 | |
| 23 | #include "ffmpeg.h" |
| 24 | |
| 25 | #include "libavfilter/avfilter.h" |
| 26 | #include "libavfilter/buffersink.h" |
| 27 | |
| 28 | #include "libavresample/avresample.h" |
| 29 | |
| 30 | #include "libavutil/avassert.h" |
| 31 | #include "libavutil/avstring.h" |
| 32 | #include "libavutil/bprint.h" |
| 33 | #include "libavutil/channel_layout.h" |
| 34 | #include "libavutil/opt.h" |
| 35 | #include "libavutil/pixdesc.h" |
| 36 | #include "libavutil/pixfmt.h" |
| 37 | #include "libavutil/imgutils.h" |
| 38 | #include "libavutil/samplefmt.h" |
| 39 | |
| 40 | enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, AVCodec *codec, enum AVPixelFormat target) |
| 41 | { |
| 42 | if (codec && codec->pix_fmts) { |
| 43 | const enum AVPixelFormat *p = codec->pix_fmts; |
| 44 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target); |
| 45 | int has_alpha = desc ? desc->nb_components % 2 == 0 : 0; |
| 46 | enum AVPixelFormat best= AV_PIX_FMT_NONE; |
| 47 | static const enum AVPixelFormat mjpeg_formats[] = |
| 48 | { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE }; |
| 49 | static const enum AVPixelFormat ljpeg_formats[] = |
| 50 | { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUV420P, |
| 51 | AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE }; |
| 52 | |
| 53 | if (enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) { |
| 54 | if (enc_ctx->codec_id == AV_CODEC_ID_MJPEG) { |
| 55 | p = mjpeg_formats; |
| 56 | } else if (enc_ctx->codec_id == AV_CODEC_ID_LJPEG) { |
| 57 | p =ljpeg_formats; |
| 58 | } |
| 59 | } |
| 60 | for (; *p != AV_PIX_FMT_NONE; p++) { |
| 61 | best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL); |
| 62 | if (*p == target) |
| 63 | break; |
| 64 | } |
| 65 | if (*p == AV_PIX_FMT_NONE) { |
| 66 | if (target != AV_PIX_FMT_NONE) |
| 67 | av_log(NULL, AV_LOG_WARNING, |
| 68 | "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n", |
| 69 | av_get_pix_fmt_name(target), |
| 70 | codec->name, |
| 71 | av_get_pix_fmt_name(best)); |
| 72 | return best; |
| 73 | } |
| 74 | } |
| 75 | return target; |
| 76 | } |
| 77 | |
| 78 | void choose_sample_fmt(AVStream *st, AVCodec *codec) |
| 79 | { |
| 80 | if (codec && codec->sample_fmts) { |
| 81 | const enum AVSampleFormat *p = codec->sample_fmts; |
| 82 | for (; *p != -1; p++) { |
| 83 | if (*p == st->codec->sample_fmt) |
| 84 | break; |
| 85 | } |
| 86 | if (*p == -1) { |
| 87 | if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0])) |
| 88 | av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n"); |
| 89 | if(av_get_sample_fmt_name(st->codec->sample_fmt)) |
| 90 | av_log(NULL, AV_LOG_WARNING, |
| 91 | "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n", |
| 92 | av_get_sample_fmt_name(st->codec->sample_fmt), |
| 93 | codec->name, |
| 94 | av_get_sample_fmt_name(codec->sample_fmts[0])); |
| 95 | st->codec->sample_fmt = codec->sample_fmts[0]; |
| 96 | } |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | static char *choose_pix_fmts(OutputStream *ost) |
| 101 | { |
| 102 | AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0); |
| 103 | if (strict_dict) |
| 104 | // used by choose_pixel_fmt() and below |
| 105 | av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0); |
| 106 | |
| 107 | if (ost->keep_pix_fmt) { |
| 108 | if (ost->filter) |
| 109 | avfilter_graph_set_auto_convert(ost->filter->graph->graph, |
| 110 | AVFILTER_AUTO_CONVERT_NONE); |
| 111 | if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE) |
| 112 | return NULL; |
| 113 | return av_strdup(av_get_pix_fmt_name(ost->enc_ctx->pix_fmt)); |
| 114 | } |
| 115 | if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) { |
| 116 | return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt))); |
| 117 | } else if (ost->enc && ost->enc->pix_fmts) { |
| 118 | const enum AVPixelFormat *p; |
| 119 | AVIOContext *s = NULL; |
| 120 | uint8_t *ret; |
| 121 | int len; |
| 122 | |
| 123 | if (avio_open_dyn_buf(&s) < 0) |
| 124 | exit_program(1); |
| 125 | |
| 126 | p = ost->enc->pix_fmts; |
| 127 | if (ost->enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) { |
| 128 | if (ost->enc_ctx->codec_id == AV_CODEC_ID_MJPEG) { |
| 129 | p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE }; |
| 130 | } else if (ost->enc_ctx->codec_id == AV_CODEC_ID_LJPEG) { |
| 131 | p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUV420P, |
| 132 | AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE }; |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | for (; *p != AV_PIX_FMT_NONE; p++) { |
| 137 | const char *name = av_get_pix_fmt_name(*p); |
| 138 | avio_printf(s, "%s|", name); |
| 139 | } |
| 140 | len = avio_close_dyn_buf(s, &ret); |
| 141 | ret[len - 1] = 0; |
| 142 | return ret; |
| 143 | } else |
| 144 | return NULL; |
| 145 | } |
| 146 | |
| 147 | /* Define a function for building a string containing a list of |
| 148 | * allowed formats. */ |
| 149 | #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name) \ |
| 150 | static char *choose_ ## var ## s(OutputStream *ost) \ |
| 151 | { \ |
| 152 | if (ost->enc_ctx->var != none) { \ |
| 153 | get_name(ost->enc_ctx->var); \ |
| 154 | return av_strdup(name); \ |
| 155 | } else if (ost->enc && ost->enc->supported_list) { \ |
| 156 | const type *p; \ |
| 157 | AVIOContext *s = NULL; \ |
| 158 | uint8_t *ret; \ |
| 159 | int len; \ |
| 160 | \ |
| 161 | if (avio_open_dyn_buf(&s) < 0) \ |
| 162 | exit_program(1); \ |
| 163 | \ |
| 164 | for (p = ost->enc->supported_list; *p != none; p++) { \ |
| 165 | get_name(*p); \ |
| 166 | avio_printf(s, "%s|", name); \ |
| 167 | } \ |
| 168 | len = avio_close_dyn_buf(s, &ret); \ |
| 169 | ret[len - 1] = 0; \ |
| 170 | return ret; \ |
| 171 | } else \ |
| 172 | return NULL; \ |
| 173 | } |
| 174 | |
| 175 | // DEF_CHOOSE_FORMAT(enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE, |
| 176 | // GET_PIX_FMT_NAME) |
| 177 | |
| 178 | DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts, |
| 179 | AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME) |
| 180 | |
| 181 | DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0, |
| 182 | GET_SAMPLE_RATE_NAME) |
| 183 | |
| 184 | DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0, |
| 185 | GET_CH_LAYOUT_NAME) |
| 186 | |
| 187 | FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost) |
| 188 | { |
| 189 | FilterGraph *fg = av_mallocz(sizeof(*fg)); |
| 190 | |
| 191 | if (!fg) |
| 192 | exit_program(1); |
| 193 | fg->index = nb_filtergraphs; |
| 194 | |
| 195 | GROW_ARRAY(fg->outputs, fg->nb_outputs); |
| 196 | if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0])))) |
| 197 | exit_program(1); |
| 198 | fg->outputs[0]->ost = ost; |
| 199 | fg->outputs[0]->graph = fg; |
| 200 | |
| 201 | ost->filter = fg->outputs[0]; |
| 202 | |
| 203 | GROW_ARRAY(fg->inputs, fg->nb_inputs); |
| 204 | if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0])))) |
| 205 | exit_program(1); |
| 206 | fg->inputs[0]->ist = ist; |
| 207 | fg->inputs[0]->graph = fg; |
| 208 | |
| 209 | GROW_ARRAY(ist->filters, ist->nb_filters); |
| 210 | ist->filters[ist->nb_filters - 1] = fg->inputs[0]; |
| 211 | |
| 212 | GROW_ARRAY(filtergraphs, nb_filtergraphs); |
| 213 | filtergraphs[nb_filtergraphs - 1] = fg; |
| 214 | |
| 215 | return fg; |
| 216 | } |
| 217 | |
| 218 | static void init_input_filter(FilterGraph *fg, AVFilterInOut *in) |
| 219 | { |
| 220 | InputStream *ist = NULL; |
| 221 | enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx); |
| 222 | int i; |
| 223 | |
| 224 | // TODO: support other filter types |
| 225 | if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) { |
| 226 | av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported " |
| 227 | "currently.\n"); |
| 228 | exit_program(1); |
| 229 | } |
| 230 | |
| 231 | if (in->name) { |
| 232 | AVFormatContext *s; |
| 233 | AVStream *st = NULL; |
| 234 | char *p; |
| 235 | int file_idx = strtol(in->name, &p, 0); |
| 236 | |
| 237 | if (file_idx < 0 || file_idx >= nb_input_files) { |
| 238 | av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n", |
| 239 | file_idx, fg->graph_desc); |
| 240 | exit_program(1); |
| 241 | } |
| 242 | s = input_files[file_idx]->ctx; |
| 243 | |
| 244 | for (i = 0; i < s->nb_streams; i++) { |
| 245 | enum AVMediaType stream_type = s->streams[i]->codec->codec_type; |
| 246 | if (stream_type != type && |
| 247 | !(stream_type == AVMEDIA_TYPE_SUBTITLE && |
| 248 | type == AVMEDIA_TYPE_VIDEO /* sub2video hack */)) |
| 249 | continue; |
| 250 | if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) { |
| 251 | st = s->streams[i]; |
| 252 | break; |
| 253 | } |
| 254 | } |
| 255 | if (!st) { |
| 256 | av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s " |
| 257 | "matches no streams.\n", p, fg->graph_desc); |
| 258 | exit_program(1); |
| 259 | } |
| 260 | ist = input_streams[input_files[file_idx]->ist_index + st->index]; |
| 261 | } else { |
| 262 | /* find the first unused stream of corresponding type */ |
| 263 | for (i = 0; i < nb_input_streams; i++) { |
| 264 | ist = input_streams[i]; |
| 265 | if (ist->dec_ctx->codec_type == type && ist->discard) |
| 266 | break; |
| 267 | } |
| 268 | if (i == nb_input_streams) { |
| 269 | av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for " |
| 270 | "unlabeled input pad %d on filter %s\n", in->pad_idx, |
| 271 | in->filter_ctx->name); |
| 272 | exit_program(1); |
| 273 | } |
| 274 | } |
| 275 | av_assert0(ist); |
| 276 | |
| 277 | ist->discard = 0; |
| 278 | ist->decoding_needed |= DECODING_FOR_FILTER; |
| 279 | ist->st->discard = AVDISCARD_NONE; |
| 280 | |
| 281 | GROW_ARRAY(fg->inputs, fg->nb_inputs); |
| 282 | if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0])))) |
| 283 | exit_program(1); |
| 284 | fg->inputs[fg->nb_inputs - 1]->ist = ist; |
| 285 | fg->inputs[fg->nb_inputs - 1]->graph = fg; |
| 286 | |
| 287 | GROW_ARRAY(ist->filters, ist->nb_filters); |
| 288 | ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1]; |
| 289 | } |
| 290 | |
| 291 | static int insert_trim(int64_t start_time, int64_t duration, |
| 292 | AVFilterContext **last_filter, int *pad_idx, |
| 293 | const char *filter_name) |
| 294 | { |
| 295 | AVFilterGraph *graph = (*last_filter)->graph; |
| 296 | AVFilterContext *ctx; |
| 297 | const AVFilter *trim; |
| 298 | enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx); |
| 299 | const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim"; |
| 300 | int ret = 0; |
| 301 | |
| 302 | if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE) |
| 303 | return 0; |
| 304 | |
| 305 | trim = avfilter_get_by_name(name); |
| 306 | if (!trim) { |
| 307 | av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit " |
| 308 | "recording time.\n", name); |
| 309 | return AVERROR_FILTER_NOT_FOUND; |
| 310 | } |
| 311 | |
| 312 | ctx = avfilter_graph_alloc_filter(graph, trim, filter_name); |
| 313 | if (!ctx) |
| 314 | return AVERROR(ENOMEM); |
| 315 | |
| 316 | if (duration != INT64_MAX) { |
| 317 | ret = av_opt_set_int(ctx, "durationi", duration, |
| 318 | AV_OPT_SEARCH_CHILDREN); |
| 319 | } |
| 320 | if (ret >= 0 && start_time != AV_NOPTS_VALUE) { |
| 321 | ret = av_opt_set_int(ctx, "starti", start_time, |
| 322 | AV_OPT_SEARCH_CHILDREN); |
| 323 | } |
| 324 | if (ret < 0) { |
| 325 | av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name); |
| 326 | return ret; |
| 327 | } |
| 328 | |
| 329 | ret = avfilter_init_str(ctx, NULL); |
| 330 | if (ret < 0) |
| 331 | return ret; |
| 332 | |
| 333 | ret = avfilter_link(*last_filter, *pad_idx, ctx, 0); |
| 334 | if (ret < 0) |
| 335 | return ret; |
| 336 | |
| 337 | *last_filter = ctx; |
| 338 | *pad_idx = 0; |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) |
| 343 | { |
| 344 | char *pix_fmts; |
| 345 | OutputStream *ost = ofilter->ost; |
| 346 | OutputFile *of = output_files[ost->file_index]; |
| 347 | AVCodecContext *codec = ost->enc_ctx; |
| 348 | AVFilterContext *last_filter = out->filter_ctx; |
| 349 | int pad_idx = out->pad_idx; |
| 350 | int ret; |
| 351 | char name[255]; |
| 352 | |
| 353 | snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index); |
| 354 | ret = avfilter_graph_create_filter(&ofilter->filter, |
| 355 | avfilter_get_by_name("buffersink"), |
| 356 | name, NULL, NULL, fg->graph); |
| 357 | |
| 358 | if (ret < 0) |
| 359 | return ret; |
| 360 | |
| 361 | if (codec->width || codec->height) { |
| 362 | char args[255]; |
| 363 | AVFilterContext *filter; |
| 364 | |
| 365 | snprintf(args, sizeof(args), "%d:%d:0x%X", |
| 366 | codec->width, |
| 367 | codec->height, |
| 368 | (unsigned)ost->sws_flags); |
| 369 | snprintf(name, sizeof(name), "scaler for output stream %d:%d", |
| 370 | ost->file_index, ost->index); |
| 371 | if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"), |
| 372 | name, args, NULL, fg->graph)) < 0) |
| 373 | return ret; |
| 374 | if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0) |
| 375 | return ret; |
| 376 | |
| 377 | last_filter = filter; |
| 378 | pad_idx = 0; |
| 379 | } |
| 380 | |
| 381 | if ((pix_fmts = choose_pix_fmts(ost))) { |
| 382 | AVFilterContext *filter; |
| 383 | snprintf(name, sizeof(name), "pixel format for output stream %d:%d", |
| 384 | ost->file_index, ost->index); |
| 385 | ret = avfilter_graph_create_filter(&filter, |
| 386 | avfilter_get_by_name("format"), |
| 387 | "format", pix_fmts, NULL, fg->graph); |
| 388 | av_freep(&pix_fmts); |
| 389 | if (ret < 0) |
| 390 | return ret; |
| 391 | if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0) |
| 392 | return ret; |
| 393 | |
| 394 | last_filter = filter; |
| 395 | pad_idx = 0; |
| 396 | } |
| 397 | |
| 398 | if (ost->frame_rate.num && 0) { |
| 399 | AVFilterContext *fps; |
| 400 | char args[255]; |
| 401 | |
| 402 | snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num, |
| 403 | ost->frame_rate.den); |
| 404 | snprintf(name, sizeof(name), "fps for output stream %d:%d", |
| 405 | ost->file_index, ost->index); |
| 406 | ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"), |
| 407 | name, args, NULL, fg->graph); |
| 408 | if (ret < 0) |
| 409 | return ret; |
| 410 | |
| 411 | ret = avfilter_link(last_filter, pad_idx, fps, 0); |
| 412 | if (ret < 0) |
| 413 | return ret; |
| 414 | last_filter = fps; |
| 415 | pad_idx = 0; |
| 416 | } |
| 417 | |
| 418 | snprintf(name, sizeof(name), "trim for output stream %d:%d", |
| 419 | ost->file_index, ost->index); |
| 420 | ret = insert_trim(of->start_time, of->recording_time, |
| 421 | &last_filter, &pad_idx, name); |
| 422 | if (ret < 0) |
| 423 | return ret; |
| 424 | |
| 425 | |
| 426 | if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0) |
| 427 | return ret; |
| 428 | |
| 429 | return 0; |
| 430 | } |
| 431 | |
| 432 | static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) |
| 433 | { |
| 434 | OutputStream *ost = ofilter->ost; |
| 435 | OutputFile *of = output_files[ost->file_index]; |
| 436 | AVCodecContext *codec = ost->enc_ctx; |
| 437 | AVFilterContext *last_filter = out->filter_ctx; |
| 438 | int pad_idx = out->pad_idx; |
| 439 | char *sample_fmts, *sample_rates, *channel_layouts; |
| 440 | char name[255]; |
| 441 | int ret; |
| 442 | |
| 443 | snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index); |
| 444 | ret = avfilter_graph_create_filter(&ofilter->filter, |
| 445 | avfilter_get_by_name("abuffersink"), |
| 446 | name, NULL, NULL, fg->graph); |
| 447 | if (ret < 0) |
| 448 | return ret; |
| 449 | if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0) |
| 450 | return ret; |
| 451 | |
| 452 | #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do { \ |
| 453 | AVFilterContext *filt_ctx; \ |
| 454 | \ |
| 455 | av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \ |
| 456 | "similarly to -af " filter_name "=%s.\n", arg); \ |
| 457 | \ |
| 458 | ret = avfilter_graph_create_filter(&filt_ctx, \ |
| 459 | avfilter_get_by_name(filter_name), \ |
| 460 | filter_name, arg, NULL, fg->graph); \ |
| 461 | if (ret < 0) \ |
| 462 | return ret; \ |
| 463 | \ |
| 464 | ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0); \ |
| 465 | if (ret < 0) \ |
| 466 | return ret; \ |
| 467 | \ |
| 468 | last_filter = filt_ctx; \ |
| 469 | pad_idx = 0; \ |
| 470 | } while (0) |
| 471 | if (ost->audio_channels_mapped) { |
| 472 | int i; |
| 473 | AVBPrint pan_buf; |
| 474 | av_bprint_init(&pan_buf, 256, 8192); |
| 475 | av_bprintf(&pan_buf, "0x%"PRIx64, |
| 476 | av_get_default_channel_layout(ost->audio_channels_mapped)); |
| 477 | for (i = 0; i < ost->audio_channels_mapped; i++) |
| 478 | if (ost->audio_channels_map[i] != -1) |
| 479 | av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]); |
| 480 | |
| 481 | AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str); |
| 482 | av_bprint_finalize(&pan_buf, NULL); |
| 483 | } |
| 484 | |
| 485 | if (codec->channels && !codec->channel_layout) |
| 486 | codec->channel_layout = av_get_default_channel_layout(codec->channels); |
| 487 | |
| 488 | sample_fmts = choose_sample_fmts(ost); |
| 489 | sample_rates = choose_sample_rates(ost); |
| 490 | channel_layouts = choose_channel_layouts(ost); |
| 491 | if (sample_fmts || sample_rates || channel_layouts) { |
| 492 | AVFilterContext *format; |
| 493 | char args[256]; |
| 494 | args[0] = 0; |
| 495 | |
| 496 | if (sample_fmts) |
| 497 | av_strlcatf(args, sizeof(args), "sample_fmts=%s:", |
| 498 | sample_fmts); |
| 499 | if (sample_rates) |
| 500 | av_strlcatf(args, sizeof(args), "sample_rates=%s:", |
| 501 | sample_rates); |
| 502 | if (channel_layouts) |
| 503 | av_strlcatf(args, sizeof(args), "channel_layouts=%s:", |
| 504 | channel_layouts); |
| 505 | |
| 506 | av_freep(&sample_fmts); |
| 507 | av_freep(&sample_rates); |
| 508 | av_freep(&channel_layouts); |
| 509 | |
| 510 | snprintf(name, sizeof(name), "audio format for output stream %d:%d", |
| 511 | ost->file_index, ost->index); |
| 512 | ret = avfilter_graph_create_filter(&format, |
| 513 | avfilter_get_by_name("aformat"), |
| 514 | name, args, NULL, fg->graph); |
| 515 | if (ret < 0) |
| 516 | return ret; |
| 517 | |
| 518 | ret = avfilter_link(last_filter, pad_idx, format, 0); |
| 519 | if (ret < 0) |
| 520 | return ret; |
| 521 | |
| 522 | last_filter = format; |
| 523 | pad_idx = 0; |
| 524 | } |
| 525 | |
| 526 | if (audio_volume != 256 && 0) { |
| 527 | char args[256]; |
| 528 | |
| 529 | snprintf(args, sizeof(args), "%f", audio_volume / 256.); |
| 530 | AUTO_INSERT_FILTER("-vol", "volume", args); |
| 531 | } |
| 532 | |
| 533 | if (ost->apad && of->shortest) { |
| 534 | char args[256]; |
| 535 | int i; |
| 536 | |
| 537 | for (i=0; i<of->ctx->nb_streams; i++) |
| 538 | if (of->ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) |
| 539 | break; |
| 540 | |
| 541 | if (i<of->ctx->nb_streams) { |
| 542 | snprintf(args, sizeof(args), "%s", ost->apad); |
| 543 | AUTO_INSERT_FILTER("-apad", "apad", args); |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | snprintf(name, sizeof(name), "trim for output stream %d:%d", |
| 548 | ost->file_index, ost->index); |
| 549 | ret = insert_trim(of->start_time, of->recording_time, |
| 550 | &last_filter, &pad_idx, name); |
| 551 | if (ret < 0) |
| 552 | return ret; |
| 553 | |
| 554 | if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0) |
| 555 | return ret; |
| 556 | |
| 557 | return 0; |
| 558 | } |
| 559 | |
| 560 | #define DESCRIBE_FILTER_LINK(f, inout, in) \ |
| 561 | { \ |
| 562 | AVFilterContext *ctx = inout->filter_ctx; \ |
| 563 | AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads; \ |
| 564 | int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs; \ |
| 565 | AVIOContext *pb; \ |
| 566 | \ |
| 567 | if (avio_open_dyn_buf(&pb) < 0) \ |
| 568 | exit_program(1); \ |
| 569 | \ |
| 570 | avio_printf(pb, "%s", ctx->filter->name); \ |
| 571 | if (nb_pads > 1) \ |
| 572 | avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\ |
| 573 | avio_w8(pb, 0); \ |
| 574 | avio_close_dyn_buf(pb, &f->name); \ |
| 575 | } |
| 576 | |
| 577 | int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) |
| 578 | { |
| 579 | av_freep(&ofilter->name); |
| 580 | DESCRIBE_FILTER_LINK(ofilter, out, 0); |
| 581 | |
| 582 | switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) { |
| 583 | case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out); |
| 584 | case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out); |
| 585 | default: av_assert0(0); |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | static int sub2video_prepare(InputStream *ist) |
| 590 | { |
| 591 | AVFormatContext *avf = input_files[ist->file_index]->ctx; |
| 592 | int i, w, h; |
| 593 | |
| 594 | /* Compute the size of the canvas for the subtitles stream. |
| 595 | If the subtitles codec has set a size, use it. Otherwise use the |
| 596 | maximum dimensions of the video streams in the same file. */ |
| 597 | w = ist->dec_ctx->width; |
| 598 | h = ist->dec_ctx->height; |
| 599 | if (!(w && h)) { |
| 600 | for (i = 0; i < avf->nb_streams; i++) { |
| 601 | if (avf->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| 602 | w = FFMAX(w, avf->streams[i]->codec->width); |
| 603 | h = FFMAX(h, avf->streams[i]->codec->height); |
| 604 | } |
| 605 | } |
| 606 | if (!(w && h)) { |
| 607 | w = FFMAX(w, 720); |
| 608 | h = FFMAX(h, 576); |
| 609 | } |
| 610 | av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h); |
| 611 | } |
| 612 | ist->sub2video.w = ist->dec_ctx->width = ist->resample_width = w; |
| 613 | ist->sub2video.h = ist->dec_ctx->height = ist->resample_height = h; |
| 614 | |
| 615 | /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the |
| 616 | palettes for all rectangles are identical or compatible */ |
| 617 | ist->resample_pix_fmt = ist->dec_ctx->pix_fmt = AV_PIX_FMT_RGB32; |
| 618 | |
| 619 | ist->sub2video.frame = av_frame_alloc(); |
| 620 | if (!ist->sub2video.frame) |
| 621 | return AVERROR(ENOMEM); |
| 622 | ist->sub2video.last_pts = INT64_MIN; |
| 623 | return 0; |
| 624 | } |
| 625 | |
| 626 | static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, |
| 627 | AVFilterInOut *in) |
| 628 | { |
| 629 | AVFilterContext *last_filter; |
| 630 | const AVFilter *buffer_filt = avfilter_get_by_name("buffer"); |
| 631 | InputStream *ist = ifilter->ist; |
| 632 | InputFile *f = input_files[ist->file_index]; |
| 633 | AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) : |
| 634 | ist->st->time_base; |
| 635 | AVRational fr = ist->framerate; |
| 636 | AVRational sar; |
| 637 | AVBPrint args; |
| 638 | char name[255]; |
| 639 | int ret, pad_idx = 0; |
| 640 | int64_t tsoffset = 0; |
| 641 | |
| 642 | if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) { |
| 643 | av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n"); |
| 644 | return AVERROR(EINVAL); |
| 645 | } |
| 646 | |
| 647 | if (!fr.num) |
| 648 | fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL); |
| 649 | |
| 650 | if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) { |
| 651 | ret = sub2video_prepare(ist); |
| 652 | if (ret < 0) |
| 653 | return ret; |
| 654 | } |
| 655 | |
| 656 | sar = ist->st->sample_aspect_ratio.num ? |
| 657 | ist->st->sample_aspect_ratio : |
| 658 | ist->dec_ctx->sample_aspect_ratio; |
| 659 | if(!sar.den) |
| 660 | sar = (AVRational){0,1}; |
| 661 | av_bprint_init(&args, 0, 1); |
| 662 | av_bprintf(&args, |
| 663 | "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:" |
| 664 | "pixel_aspect=%d/%d:sws_param=flags=%d", ist->resample_width, |
| 665 | ist->resample_height, |
| 666 | ist->hwaccel_retrieve_data ? ist->hwaccel_retrieved_pix_fmt : ist->resample_pix_fmt, |
| 667 | tb.num, tb.den, sar.num, sar.den, |
| 668 | SWS_BILINEAR + ((ist->dec_ctx->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0)); |
| 669 | if (fr.num && fr.den) |
| 670 | av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den); |
| 671 | snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index, |
| 672 | ist->file_index, ist->st->index); |
| 673 | |
| 674 | if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name, |
| 675 | args.str, NULL, fg->graph)) < 0) |
| 676 | return ret; |
| 677 | last_filter = ifilter->filter; |
| 678 | |
| 679 | if (ist->framerate.num) { |
| 680 | AVFilterContext *setpts; |
| 681 | |
| 682 | snprintf(name, sizeof(name), "force CFR for input from stream %d:%d", |
| 683 | ist->file_index, ist->st->index); |
| 684 | if ((ret = avfilter_graph_create_filter(&setpts, |
| 685 | avfilter_get_by_name("setpts"), |
| 686 | name, "N", NULL, |
| 687 | fg->graph)) < 0) |
| 688 | return ret; |
| 689 | |
| 690 | if ((ret = avfilter_link(last_filter, 0, setpts, 0)) < 0) |
| 691 | return ret; |
| 692 | |
| 693 | last_filter = setpts; |
| 694 | } |
| 695 | |
| 696 | if (do_deinterlace) { |
| 697 | AVFilterContext *yadif; |
| 698 | |
| 699 | snprintf(name, sizeof(name), "deinterlace input from stream %d:%d", |
| 700 | ist->file_index, ist->st->index); |
| 701 | if ((ret = avfilter_graph_create_filter(&yadif, |
| 702 | avfilter_get_by_name("yadif"), |
| 703 | name, "", NULL, |
| 704 | fg->graph)) < 0) |
| 705 | return ret; |
| 706 | |
| 707 | if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0) |
| 708 | return ret; |
| 709 | |
| 710 | last_filter = yadif; |
| 711 | } |
| 712 | |
| 713 | snprintf(name, sizeof(name), "trim for input stream %d:%d", |
| 714 | ist->file_index, ist->st->index); |
| 715 | if (copy_ts) { |
| 716 | tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time; |
| 717 | if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE) |
| 718 | tsoffset += f->ctx->start_time; |
| 719 | } |
| 720 | ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ? |
| 721 | AV_NOPTS_VALUE : tsoffset, f->recording_time, |
| 722 | &last_filter, &pad_idx, name); |
| 723 | if (ret < 0) |
| 724 | return ret; |
| 725 | |
| 726 | if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0) |
| 727 | return ret; |
| 728 | return 0; |
| 729 | } |
| 730 | |
| 731 | static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter, |
| 732 | AVFilterInOut *in) |
| 733 | { |
| 734 | AVFilterContext *last_filter; |
| 735 | const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer"); |
| 736 | InputStream *ist = ifilter->ist; |
| 737 | InputFile *f = input_files[ist->file_index]; |
| 738 | AVBPrint args; |
| 739 | char name[255]; |
| 740 | int ret, pad_idx = 0; |
| 741 | int64_t tsoffset = 0; |
| 742 | |
| 743 | if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO) { |
| 744 | av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n"); |
| 745 | return AVERROR(EINVAL); |
| 746 | } |
| 747 | |
| 748 | av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC); |
| 749 | av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s", |
| 750 | 1, ist->dec_ctx->sample_rate, |
| 751 | ist->dec_ctx->sample_rate, |
| 752 | av_get_sample_fmt_name(ist->dec_ctx->sample_fmt)); |
| 753 | if (ist->dec_ctx->channel_layout) |
| 754 | av_bprintf(&args, ":channel_layout=0x%"PRIx64, |
| 755 | ist->dec_ctx->channel_layout); |
| 756 | else |
| 757 | av_bprintf(&args, ":channels=%d", ist->dec_ctx->channels); |
| 758 | snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index, |
| 759 | ist->file_index, ist->st->index); |
| 760 | |
| 761 | if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt, |
| 762 | name, args.str, NULL, |
| 763 | fg->graph)) < 0) |
| 764 | return ret; |
| 765 | last_filter = ifilter->filter; |
| 766 | |
| 767 | #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do { \ |
| 768 | AVFilterContext *filt_ctx; \ |
| 769 | \ |
| 770 | av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \ |
| 771 | "similarly to -af " filter_name "=%s.\n", arg); \ |
| 772 | \ |
| 773 | snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d", \ |
| 774 | fg->index, filter_name, ist->file_index, ist->st->index); \ |
| 775 | ret = avfilter_graph_create_filter(&filt_ctx, \ |
| 776 | avfilter_get_by_name(filter_name), \ |
| 777 | name, arg, NULL, fg->graph); \ |
| 778 | if (ret < 0) \ |
| 779 | return ret; \ |
| 780 | \ |
| 781 | ret = avfilter_link(last_filter, 0, filt_ctx, 0); \ |
| 782 | if (ret < 0) \ |
| 783 | return ret; \ |
| 784 | \ |
| 785 | last_filter = filt_ctx; \ |
| 786 | } while (0) |
| 787 | |
| 788 | if (audio_sync_method > 0) { |
| 789 | char args[256] = {0}; |
| 790 | |
| 791 | av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method); |
| 792 | if (audio_drift_threshold != 0.1) |
| 793 | av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold); |
| 794 | if (!fg->reconfiguration) |
| 795 | av_strlcatf(args, sizeof(args), ":first_pts=0"); |
| 796 | AUTO_INSERT_FILTER_INPUT("-async", "aresample", args); |
| 797 | } |
| 798 | |
| 799 | // if (ost->audio_channels_mapped) { |
| 800 | // int i; |
| 801 | // AVBPrint pan_buf; |
| 802 | // av_bprint_init(&pan_buf, 256, 8192); |
| 803 | // av_bprintf(&pan_buf, "0x%"PRIx64, |
| 804 | // av_get_default_channel_layout(ost->audio_channels_mapped)); |
| 805 | // for (i = 0; i < ost->audio_channels_mapped; i++) |
| 806 | // if (ost->audio_channels_map[i] != -1) |
| 807 | // av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]); |
| 808 | // AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str); |
| 809 | // av_bprint_finalize(&pan_buf, NULL); |
| 810 | // } |
| 811 | |
| 812 | if (audio_volume != 256) { |
| 813 | char args[256]; |
| 814 | |
| 815 | av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume " |
| 816 | "audio filter instead.\n"); |
| 817 | |
| 818 | snprintf(args, sizeof(args), "%f", audio_volume / 256.); |
| 819 | AUTO_INSERT_FILTER_INPUT("-vol", "volume", args); |
| 820 | } |
| 821 | |
| 822 | snprintf(name, sizeof(name), "trim for input stream %d:%d", |
| 823 | ist->file_index, ist->st->index); |
| 824 | if (copy_ts) { |
| 825 | tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time; |
| 826 | if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE) |
| 827 | tsoffset += f->ctx->start_time; |
| 828 | } |
| 829 | ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ? |
| 830 | AV_NOPTS_VALUE : tsoffset, f->recording_time, |
| 831 | &last_filter, &pad_idx, name); |
| 832 | if (ret < 0) |
| 833 | return ret; |
| 834 | |
| 835 | if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0) |
| 836 | return ret; |
| 837 | |
| 838 | return 0; |
| 839 | } |
| 840 | |
| 841 | static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter, |
| 842 | AVFilterInOut *in) |
| 843 | { |
| 844 | av_freep(&ifilter->name); |
| 845 | DESCRIBE_FILTER_LINK(ifilter, in, 1); |
| 846 | |
| 847 | if (!ifilter->ist->dec) { |
| 848 | av_log(NULL, AV_LOG_ERROR, |
| 849 | "No decoder for stream #%d:%d, filtering impossible\n", |
| 850 | ifilter->ist->file_index, ifilter->ist->st->index); |
| 851 | return AVERROR_DECODER_NOT_FOUND; |
| 852 | } |
| 853 | switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) { |
| 854 | case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in); |
| 855 | case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in); |
| 856 | default: av_assert0(0); |
| 857 | } |
| 858 | } |
| 859 | |
| 860 | int configure_filtergraph(FilterGraph *fg) |
| 861 | { |
| 862 | AVFilterInOut *inputs, *outputs, *cur; |
| 863 | int ret, i, init = !fg->graph, simple = !fg->graph_desc; |
| 864 | const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter : |
| 865 | fg->graph_desc; |
| 866 | |
| 867 | avfilter_graph_free(&fg->graph); |
| 868 | if (!(fg->graph = avfilter_graph_alloc())) |
| 869 | return AVERROR(ENOMEM); |
| 870 | |
| 871 | if (simple) { |
| 872 | OutputStream *ost = fg->outputs[0]->ost; |
| 873 | char args[512]; |
| 874 | AVDictionaryEntry *e = NULL; |
| 875 | |
| 876 | snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags); |
| 877 | fg->graph->scale_sws_opts = av_strdup(args); |
| 878 | |
| 879 | args[0] = 0; |
| 880 | while ((e = av_dict_get(ost->swr_opts, "", e, |
| 881 | AV_DICT_IGNORE_SUFFIX))) { |
| 882 | av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value); |
| 883 | } |
| 884 | if (strlen(args)) |
| 885 | args[strlen(args)-1] = 0; |
| 886 | av_opt_set(fg->graph, "aresample_swr_opts", args, 0); |
| 887 | |
| 888 | args[0] = '\0'; |
| 889 | while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e, |
| 890 | AV_DICT_IGNORE_SUFFIX))) { |
| 891 | av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value); |
| 892 | } |
| 893 | if (strlen(args)) |
| 894 | args[strlen(args) - 1] = '\0'; |
| 895 | fg->graph->resample_lavr_opts = av_strdup(args); |
| 896 | |
| 897 | e = av_dict_get(ost->encoder_opts, "threads", NULL, 0); |
| 898 | if (e) |
| 899 | av_opt_set(fg->graph, "threads", e->value, 0); |
| 900 | } |
| 901 | |
| 902 | if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0) |
| 903 | return ret; |
| 904 | |
| 905 | if (simple && (!inputs || inputs->next || !outputs || outputs->next)) { |
| 906 | av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have " |
| 907 | "exactly one input and output.\n", graph_desc); |
| 908 | return AVERROR(EINVAL); |
| 909 | } |
| 910 | |
| 911 | for (cur = inputs; !simple && init && cur; cur = cur->next) |
| 912 | init_input_filter(fg, cur); |
| 913 | |
| 914 | for (cur = inputs, i = 0; cur; cur = cur->next, i++) |
| 915 | if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) { |
| 916 | avfilter_inout_free(&inputs); |
| 917 | avfilter_inout_free(&outputs); |
| 918 | return ret; |
| 919 | } |
| 920 | avfilter_inout_free(&inputs); |
| 921 | |
| 922 | if (!init || simple) { |
| 923 | /* we already know the mappings between lavfi outputs and output streams, |
| 924 | * so we can finish the setup */ |
| 925 | for (cur = outputs, i = 0; cur; cur = cur->next, i++) |
| 926 | configure_output_filter(fg, fg->outputs[i], cur); |
| 927 | avfilter_inout_free(&outputs); |
| 928 | |
| 929 | if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0) |
| 930 | return ret; |
| 931 | } else { |
| 932 | /* wait until output mappings are processed */ |
| 933 | for (cur = outputs; cur;) { |
| 934 | GROW_ARRAY(fg->outputs, fg->nb_outputs); |
| 935 | if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0])))) |
| 936 | exit_program(1); |
| 937 | fg->outputs[fg->nb_outputs - 1]->graph = fg; |
| 938 | fg->outputs[fg->nb_outputs - 1]->out_tmp = cur; |
| 939 | cur = cur->next; |
| 940 | fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL; |
| 941 | } |
| 942 | } |
| 943 | |
| 944 | fg->reconfiguration = 1; |
| 945 | |
| 946 | for (i = 0; i < fg->nb_outputs; i++) { |
| 947 | OutputStream *ost = fg->outputs[i]->ost; |
| 948 | if (ost && |
| 949 | ost->enc->type == AVMEDIA_TYPE_AUDIO && |
| 950 | !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) |
| 951 | av_buffersink_set_frame_size(ost->filter->filter, |
| 952 | ost->enc_ctx->frame_size); |
| 953 | } |
| 954 | |
| 955 | return 0; |
| 956 | } |
| 957 | |
| 958 | int ist_in_filtergraph(FilterGraph *fg, InputStream *ist) |
| 959 | { |
| 960 | int i; |
| 961 | for (i = 0; i < fg->nb_inputs; i++) |
| 962 | if (fg->inputs[i]->ist == ist) |
| 963 | return 1; |
| 964 | return 0; |
| 965 | } |
| 966 | |