3 * Copyright (c) 2007 Bobby Bingham
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
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 GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/atomic.h"
23 #include "libavutil/avassert.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/channel_layout.h"
26 #include "libavutil/common.h"
27 #include "libavutil/eval.h"
28 #include "libavutil/imgutils.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/rational.h"
33 #include "libavutil/samplefmt.h"
40 #include "libavutil/ffversion.h"
41 const char av_filter_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
43 static int ff_filter_frame_framed(AVFilterLink *link, AVFrame *frame);
45 void ff_tlog_ref(void *ctx, AVFrame *ref, int end)
47 av_unused char buf[16];
49 "ref[%p buf:%p data:%p linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64,
50 ref, ref->buf, ref->data[0],
51 ref->linesize[0], ref->linesize[1], ref->linesize[2], ref->linesize[3],
52 ref->pts, av_frame_get_pkt_pos(ref));
55 ff_tlog(ctx, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c",
56 ref->sample_aspect_ratio.num, ref->sample_aspect_ratio.den,
57 ref->width, ref->height,
58 !ref->interlaced_frame ? 'P' : /* Progressive */
59 ref->top_field_first ? 'T' : 'B', /* Top / Bottom */
61 av_get_picture_type_char(ref->pict_type));
63 if (ref->nb_samples) {
64 ff_tlog(ctx, " cl:%"PRId64"d n:%d r:%d",
70 ff_tlog(ctx, "]%s", end ? "\n" : "");
73 unsigned avfilter_version(void)
75 av_assert0(LIBAVFILTER_VERSION_MICRO >= 100);
76 return LIBAVFILTER_VERSION_INT;
79 const char *avfilter_configuration(void)
81 return FFMPEG_CONFIGURATION;
84 const char *avfilter_license(void)
86 #define LICENSE_PREFIX "libavfilter license: "
87 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
90 void ff_command_queue_pop(AVFilterContext *filter)
92 AVFilterCommand *c= filter->command_queue;
94 av_freep(&c->command);
95 filter->command_queue= c->next;
99 int ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
100 AVFilterPad **pads, AVFilterLink ***links,
103 AVFilterLink **newlinks;
104 AVFilterPad *newpads;
107 idx = FFMIN(idx, *count);
109 newpads = av_realloc_array(*pads, *count + 1, sizeof(AVFilterPad));
110 newlinks = av_realloc_array(*links, *count + 1, sizeof(AVFilterLink*));
115 if (!newpads || !newlinks)
116 return AVERROR(ENOMEM);
118 memmove(*pads + idx + 1, *pads + idx, sizeof(AVFilterPad) * (*count - idx));
119 memmove(*links + idx + 1, *links + idx, sizeof(AVFilterLink*) * (*count - idx));
120 memcpy(*pads + idx, newpad, sizeof(AVFilterPad));
121 (*links)[idx] = NULL;
124 for (i = idx + 1; i < *count; i++)
126 (*(unsigned *)((uint8_t *) (*links)[i] + padidx_off))++;
131 int avfilter_link(AVFilterContext *src, unsigned srcpad,
132 AVFilterContext *dst, unsigned dstpad)
136 if (src->nb_outputs <= srcpad || dst->nb_inputs <= dstpad ||
137 src->outputs[srcpad] || dst->inputs[dstpad])
138 return AVERROR(EINVAL);
140 if (src->output_pads[srcpad].type != dst->input_pads[dstpad].type) {
141 av_log(src, AV_LOG_ERROR,
142 "Media type mismatch between the '%s' filter output pad %d (%s) and the '%s' filter input pad %d (%s)\n",
143 src->name, srcpad, (char *)av_x_if_null(av_get_media_type_string(src->output_pads[srcpad].type), "?"),
144 dst->name, dstpad, (char *)av_x_if_null(av_get_media_type_string(dst-> input_pads[dstpad].type), "?"));
145 return AVERROR(EINVAL);
148 link = av_mallocz(sizeof(*link));
150 return AVERROR(ENOMEM);
152 src->outputs[srcpad] = dst->inputs[dstpad] = link;
156 link->srcpad = &src->output_pads[srcpad];
157 link->dstpad = &dst->input_pads[dstpad];
158 link->type = src->output_pads[srcpad].type;
159 av_assert0(AV_PIX_FMT_NONE == -1 && AV_SAMPLE_FMT_NONE == -1);
165 void avfilter_link_free(AVFilterLink **link)
170 av_frame_free(&(*link)->partial_buf);
175 int avfilter_link_get_channels(AVFilterLink *link)
177 return link->channels;
180 void avfilter_link_set_closed(AVFilterLink *link, int closed)
182 link->closed = closed;
185 int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
186 unsigned filt_srcpad_idx, unsigned filt_dstpad_idx)
189 unsigned dstpad_idx = link->dstpad - link->dst->input_pads;
191 av_log(link->dst, AV_LOG_VERBOSE, "auto-inserting filter '%s' "
192 "between the filter '%s' and the filter '%s'\n",
193 filt->name, link->src->name, link->dst->name);
195 link->dst->inputs[dstpad_idx] = NULL;
196 if ((ret = avfilter_link(filt, filt_dstpad_idx, link->dst, dstpad_idx)) < 0) {
197 /* failed to link output filter to new filter */
198 link->dst->inputs[dstpad_idx] = link;
202 /* re-hookup the link to the new destination filter we inserted */
204 link->dstpad = &filt->input_pads[filt_srcpad_idx];
205 filt->inputs[filt_srcpad_idx] = link;
207 /* if any information on supported media formats already exists on the
208 * link, we need to preserve that */
209 if (link->out_formats)
210 ff_formats_changeref(&link->out_formats,
211 &filt->outputs[filt_dstpad_idx]->out_formats);
212 if (link->out_samplerates)
213 ff_formats_changeref(&link->out_samplerates,
214 &filt->outputs[filt_dstpad_idx]->out_samplerates);
215 if (link->out_channel_layouts)
216 ff_channel_layouts_changeref(&link->out_channel_layouts,
217 &filt->outputs[filt_dstpad_idx]->out_channel_layouts);
222 int avfilter_config_links(AVFilterContext *filter)
224 int (*config_link)(AVFilterLink *);
228 for (i = 0; i < filter->nb_inputs; i ++) {
229 AVFilterLink *link = filter->inputs[i];
230 AVFilterLink *inlink;
233 if (!link->src || !link->dst) {
234 av_log(filter, AV_LOG_ERROR,
235 "Not all input and output are properly linked (%d).\n", i);
236 return AVERROR(EINVAL);
239 inlink = link->src->nb_inputs ? link->src->inputs[0] : NULL;
240 link->current_pts = AV_NOPTS_VALUE;
242 switch (link->init_state) {
245 case AVLINK_STARTINIT:
246 av_log(filter, AV_LOG_INFO, "circular filter chain detected\n");
249 link->init_state = AVLINK_STARTINIT;
251 if ((ret = avfilter_config_links(link->src)) < 0)
254 if (!(config_link = link->srcpad->config_props)) {
255 if (link->src->nb_inputs != 1) {
256 av_log(link->src, AV_LOG_ERROR, "Source filters and filters "
257 "with more than one input "
258 "must set config_props() "
259 "callbacks on all outputs\n");
260 return AVERROR(EINVAL);
262 } else if ((ret = config_link(link)) < 0) {
263 av_log(link->src, AV_LOG_ERROR,
264 "Failed to configure output pad on %s\n",
269 switch (link->type) {
270 case AVMEDIA_TYPE_VIDEO:
271 if (!link->time_base.num && !link->time_base.den)
272 link->time_base = inlink ? inlink->time_base : AV_TIME_BASE_Q;
274 if (!link->sample_aspect_ratio.num && !link->sample_aspect_ratio.den)
275 link->sample_aspect_ratio = inlink ?
276 inlink->sample_aspect_ratio : (AVRational){1,1};
278 if (inlink && !link->frame_rate.num && !link->frame_rate.den)
279 link->frame_rate = inlink->frame_rate;
286 } else if (!link->w || !link->h) {
287 av_log(link->src, AV_LOG_ERROR,
288 "Video source filters must set their output link's "
289 "width and height\n");
290 return AVERROR(EINVAL);
294 case AVMEDIA_TYPE_AUDIO:
296 if (!link->time_base.num && !link->time_base.den)
297 link->time_base = inlink->time_base;
300 if (!link->time_base.num && !link->time_base.den)
301 link->time_base = (AVRational) {1, link->sample_rate};
304 if ((config_link = link->dstpad->config_props))
305 if ((ret = config_link(link)) < 0) {
306 av_log(link->dst, AV_LOG_ERROR,
307 "Failed to configure input pad on %s\n",
312 link->init_state = AVLINK_INIT;
319 void ff_tlog_link(void *ctx, AVFilterLink *link, int end)
321 if (link->type == AVMEDIA_TYPE_VIDEO) {
323 "link[%p s:%dx%d fmt:%s %s->%s]%s",
324 link, link->w, link->h,
325 av_get_pix_fmt_name(link->format),
326 link->src ? link->src->filter->name : "",
327 link->dst ? link->dst->filter->name : "",
331 av_get_channel_layout_string(buf, sizeof(buf), -1, link->channel_layout);
334 "link[%p r:%d cl:%s fmt:%s %s->%s]%s",
335 link, (int)link->sample_rate, buf,
336 av_get_sample_fmt_name(link->format),
337 link->src ? link->src->filter->name : "",
338 link->dst ? link->dst->filter->name : "",
343 int ff_request_frame(AVFilterLink *link)
346 FF_TPRINTF_START(NULL, request_frame); ff_tlog_link(NULL, link, 1);
350 av_assert0(!link->frame_requested);
351 link->frame_requested = 1;
352 while (link->frame_requested) {
353 if (link->srcpad->request_frame)
354 ret = link->srcpad->request_frame(link);
355 else if (link->src->inputs[0])
356 ret = ff_request_frame(link->src->inputs[0]);
357 if (ret == AVERROR_EOF && link->partial_buf) {
358 AVFrame *pbuf = link->partial_buf;
359 link->partial_buf = NULL;
360 ret = ff_filter_frame_framed(link, pbuf);
363 link->frame_requested = 0;
364 if (ret == AVERROR_EOF)
367 av_assert0(!link->frame_requested ||
368 link->flags & FF_LINK_FLAG_REQUEST_LOOP);
374 int ff_poll_frame(AVFilterLink *link)
376 int i, min = INT_MAX;
378 if (link->srcpad->poll_frame)
379 return link->srcpad->poll_frame(link);
381 for (i = 0; i < link->src->nb_inputs; i++) {
383 if (!link->src->inputs[i])
384 return AVERROR(EINVAL);
385 val = ff_poll_frame(link->src->inputs[i]);
386 min = FFMIN(min, val);
392 static const char *const var_names[] = {
410 static int set_enable_expr(AVFilterContext *ctx, const char *expr)
414 AVExpr *old = ctx->enable;
416 if (!(ctx->filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)) {
417 av_log(ctx, AV_LOG_ERROR, "Timeline ('enable' option) not supported "
418 "with filter '%s'\n", ctx->filter->name);
419 return AVERROR_PATCHWELCOME;
422 expr_dup = av_strdup(expr);
424 return AVERROR(ENOMEM);
426 if (!ctx->var_values) {
427 ctx->var_values = av_calloc(VAR_VARS_NB, sizeof(*ctx->var_values));
428 if (!ctx->var_values) {
430 return AVERROR(ENOMEM);
434 ret = av_expr_parse((AVExpr**)&ctx->enable, expr_dup, var_names,
435 NULL, NULL, NULL, NULL, 0, ctx->priv);
437 av_log(ctx->priv, AV_LOG_ERROR,
438 "Error when evaluating the expression '%s' for enable\n",
445 av_free(ctx->enable_str);
446 ctx->enable_str = expr_dup;
450 void ff_update_link_current_pts(AVFilterLink *link, int64_t pts)
452 if (pts == AV_NOPTS_VALUE)
454 link->current_pts = av_rescale_q(pts, link->time_base, AV_TIME_BASE_Q);
455 /* TODO use duration */
456 if (link->graph && link->age_index >= 0)
457 ff_avfilter_graph_update_heap(link->graph, link);
460 int avfilter_process_command(AVFilterContext *filter, const char *cmd, const char *arg, char *res, int res_len, int flags)
462 if(!strcmp(cmd, "ping")){
463 char local_res[256] = {0};
467 res_len = sizeof(local_res);
469 av_strlcatf(res, res_len, "pong from:%s %s\n", filter->filter->name, filter->name);
470 if (res == local_res)
471 av_log(filter, AV_LOG_INFO, "%s", res);
473 }else if(!strcmp(cmd, "enable")) {
474 return set_enable_expr(filter, arg);
475 }else if(filter->filter->process_command) {
476 return filter->filter->process_command(filter, cmd, arg, res, res_len, flags);
478 return AVERROR(ENOSYS);
481 static AVFilter *first_filter;
482 static AVFilter **last_filter = &first_filter;
484 #if !FF_API_NOCONST_GET_NAME
487 AVFilter *avfilter_get_by_name(const char *name)
489 const AVFilter *f = NULL;
494 while ((f = avfilter_next(f)))
495 if (!strcmp(f->name, name))
496 return (AVFilter *)f;
501 int avfilter_register(AVFilter *filter)
503 AVFilter **f = last_filter;
505 /* the filter must select generic or internal exclusively */
506 av_assert0((filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE) != AVFILTER_FLAG_SUPPORT_TIMELINE);
510 while(*f || avpriv_atomic_ptr_cas((void * volatile *)f, NULL, filter))
512 last_filter = &filter->next;
517 const AVFilter *avfilter_next(const AVFilter *prev)
519 return prev ? prev->next : first_filter;
522 #if FF_API_OLD_FILTER_REGISTER
523 AVFilter **av_filter_next(AVFilter **filter)
525 return filter ? &(*filter)->next : &first_filter;
528 void avfilter_uninit(void)
533 int avfilter_pad_count(const AVFilterPad *pads)
540 for (count = 0; pads->name; count++)
545 static const char *default_filter_name(void *filter_ctx)
547 AVFilterContext *ctx = filter_ctx;
548 return ctx->name ? ctx->name : ctx->filter->name;
551 static void *filter_child_next(void *obj, void *prev)
553 AVFilterContext *ctx = obj;
554 if (!prev && ctx->filter && ctx->filter->priv_class && ctx->priv)
559 static const AVClass *filter_child_class_next(const AVClass *prev)
561 const AVFilter *f = NULL;
563 /* find the filter that corresponds to prev */
564 while (prev && (f = avfilter_next(f)))
565 if (f->priv_class == prev)
568 /* could not find filter corresponding to prev */
572 /* find next filter with specific options */
573 while ((f = avfilter_next(f)))
575 return f->priv_class;
580 #define OFFSET(x) offsetof(AVFilterContext, x)
581 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM
582 static const AVOption avfilter_options[] = {
583 { "thread_type", "Allowed thread types", OFFSET(thread_type), AV_OPT_TYPE_FLAGS,
584 { .i64 = AVFILTER_THREAD_SLICE }, 0, INT_MAX, FLAGS, "thread_type" },
585 { "slice", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVFILTER_THREAD_SLICE }, .unit = "thread_type" },
586 { "enable", "set enable expression", OFFSET(enable_str), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
590 static const AVClass avfilter_class = {
591 .class_name = "AVFilter",
592 .item_name = default_filter_name,
593 .version = LIBAVUTIL_VERSION_INT,
594 .category = AV_CLASS_CATEGORY_FILTER,
595 .child_next = filter_child_next,
596 .child_class_next = filter_child_class_next,
597 .option = avfilter_options,
600 static int default_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg,
601 int *ret, int nb_jobs)
605 for (i = 0; i < nb_jobs; i++) {
606 int r = func(ctx, arg, i, nb_jobs);
613 AVFilterContext *ff_filter_alloc(const AVFilter *filter, const char *inst_name)
615 AVFilterContext *ret;
620 ret = av_mallocz(sizeof(AVFilterContext));
624 ret->av_class = &avfilter_class;
625 ret->filter = filter;
626 ret->name = inst_name ? av_strdup(inst_name) : NULL;
627 if (filter->priv_size) {
628 ret->priv = av_mallocz(filter->priv_size);
633 av_opt_set_defaults(ret);
634 if (filter->priv_class) {
635 *(const AVClass**)ret->priv = filter->priv_class;
636 av_opt_set_defaults(ret->priv);
639 ret->internal = av_mallocz(sizeof(*ret->internal));
642 ret->internal->execute = default_execute;
644 ret->nb_inputs = avfilter_pad_count(filter->inputs);
645 if (ret->nb_inputs ) {
646 ret->input_pads = av_malloc_array(ret->nb_inputs, sizeof(AVFilterPad));
647 if (!ret->input_pads)
649 memcpy(ret->input_pads, filter->inputs, sizeof(AVFilterPad) * ret->nb_inputs);
650 ret->inputs = av_mallocz_array(ret->nb_inputs, sizeof(AVFilterLink*));
655 ret->nb_outputs = avfilter_pad_count(filter->outputs);
656 if (ret->nb_outputs) {
657 ret->output_pads = av_malloc_array(ret->nb_outputs, sizeof(AVFilterPad));
658 if (!ret->output_pads)
660 memcpy(ret->output_pads, filter->outputs, sizeof(AVFilterPad) * ret->nb_outputs);
661 ret->outputs = av_mallocz_array(ret->nb_outputs, sizeof(AVFilterLink*));
669 av_freep(&ret->inputs);
670 av_freep(&ret->input_pads);
672 av_freep(&ret->outputs);
673 av_freep(&ret->output_pads);
675 av_freep(&ret->priv);
676 av_freep(&ret->internal);
681 #if FF_API_AVFILTER_OPEN
682 int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name)
684 *filter_ctx = ff_filter_alloc(filter, inst_name);
685 return *filter_ctx ? 0 : AVERROR(ENOMEM);
689 static void free_link(AVFilterLink *link)
695 link->src->outputs[link->srcpad - link->src->output_pads] = NULL;
697 link->dst->inputs[link->dstpad - link->dst->input_pads] = NULL;
699 ff_formats_unref(&link->in_formats);
700 ff_formats_unref(&link->out_formats);
701 ff_formats_unref(&link->in_samplerates);
702 ff_formats_unref(&link->out_samplerates);
703 ff_channel_layouts_unref(&link->in_channel_layouts);
704 ff_channel_layouts_unref(&link->out_channel_layouts);
705 avfilter_link_free(&link);
708 void avfilter_free(AVFilterContext *filter)
716 ff_filter_graph_remove_filter(filter->graph, filter);
718 if (filter->filter->uninit)
719 filter->filter->uninit(filter);
721 for (i = 0; i < filter->nb_inputs; i++) {
722 free_link(filter->inputs[i]);
724 for (i = 0; i < filter->nb_outputs; i++) {
725 free_link(filter->outputs[i]);
728 if (filter->filter->priv_class)
729 av_opt_free(filter->priv);
731 av_freep(&filter->name);
732 av_freep(&filter->input_pads);
733 av_freep(&filter->output_pads);
734 av_freep(&filter->inputs);
735 av_freep(&filter->outputs);
736 av_freep(&filter->priv);
737 while(filter->command_queue){
738 ff_command_queue_pop(filter);
741 av_expr_free(filter->enable);
742 filter->enable = NULL;
743 av_freep(&filter->var_values);
744 av_freep(&filter->internal);
748 static int process_options(AVFilterContext *ctx, AVDictionary **options,
751 const AVOption *o = NULL;
753 char *av_uninit(parsed_key), *av_uninit(value);
761 const char *shorthand = NULL;
763 o = av_opt_next(ctx->priv, o);
765 if (o->type == AV_OPT_TYPE_CONST || o->offset == offset)
771 ret = av_opt_get_key_value(&args, "=", ":",
772 shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
773 &parsed_key, &value);
775 if (ret == AVERROR(EINVAL))
776 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", args);
778 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", args,
786 while ((o = av_opt_next(ctx->priv, o))); /* discard all remaining shorthand */
791 av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
793 if (av_opt_find(ctx, key, NULL, 0, 0)) {
794 ret = av_opt_set(ctx, key, value, 0);
801 av_dict_set(options, key, value, 0);
802 if ((ret = av_opt_set(ctx->priv, key, value, 0)) < 0) {
803 if (!av_opt_find(ctx->priv, key, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) {
804 if (ret == AVERROR_OPTION_NOT_FOUND)
805 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
818 if (ctx->enable_str) {
819 ret = set_enable_expr(ctx, ctx->enable_str);
826 #if FF_API_AVFILTER_INIT_FILTER
827 int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque)
829 return avfilter_init_str(filter, args);
833 int avfilter_init_dict(AVFilterContext *ctx, AVDictionary **options)
837 ret = av_opt_set_dict(ctx, options);
839 av_log(ctx, AV_LOG_ERROR, "Error applying generic filter options.\n");
843 if (ctx->filter->flags & AVFILTER_FLAG_SLICE_THREADS &&
844 ctx->thread_type & ctx->graph->thread_type & AVFILTER_THREAD_SLICE &&
845 ctx->graph->internal->thread_execute) {
846 ctx->thread_type = AVFILTER_THREAD_SLICE;
847 ctx->internal->execute = ctx->graph->internal->thread_execute;
849 ctx->thread_type = 0;
852 if (ctx->filter->priv_class) {
853 ret = av_opt_set_dict(ctx->priv, options);
855 av_log(ctx, AV_LOG_ERROR, "Error applying options to the filter.\n");
860 if (ctx->filter->init_opaque)
861 ret = ctx->filter->init_opaque(ctx, NULL);
862 else if (ctx->filter->init)
863 ret = ctx->filter->init(ctx);
864 else if (ctx->filter->init_dict)
865 ret = ctx->filter->init_dict(ctx, options);
870 int avfilter_init_str(AVFilterContext *filter, const char *args)
872 AVDictionary *options = NULL;
873 AVDictionaryEntry *e;
877 if (!filter->filter->priv_class) {
878 av_log(filter, AV_LOG_ERROR, "This filter does not take any "
879 "options, but options were provided: %s.\n", args);
880 return AVERROR(EINVAL);
883 #if FF_API_OLD_FILTER_OPTS || FF_API_OLD_FILTER_OPTS_ERROR
884 if ( !strcmp(filter->filter->name, "format") ||
885 !strcmp(filter->filter->name, "noformat") ||
886 !strcmp(filter->filter->name, "frei0r") ||
887 !strcmp(filter->filter->name, "frei0r_src") ||
888 !strcmp(filter->filter->name, "ocv") ||
889 !strcmp(filter->filter->name, "pan") ||
890 !strcmp(filter->filter->name, "pp") ||
891 !strcmp(filter->filter->name, "aevalsrc")) {
892 /* a hack for compatibility with the old syntax
893 * replace colons with |s */
894 char *copy = av_strdup(args);
896 int nb_leading = 0; // number of leading colons to skip
900 ret = AVERROR(ENOMEM);
904 if (!strcmp(filter->filter->name, "frei0r") ||
905 !strcmp(filter->filter->name, "ocv"))
907 else if (!strcmp(filter->filter->name, "frei0r_src"))
910 while (nb_leading--) {
913 p = copy + strlen(copy);
919 deprecated = strchr(p, ':') != NULL;
921 if (!strcmp(filter->filter->name, "aevalsrc")) {
923 while ((p = strchr(p, ':')) && p[1] != ':') {
924 const char *epos = strchr(p + 1, '=');
925 const char *spos = strchr(p + 1, ':');
926 const int next_token_is_opt = epos && (!spos || epos < spos);
927 if (next_token_is_opt) {
931 /* next token does not contain a '=', assume a channel expression */
935 if (p && *p == ':') { // double sep '::' found
937 memmove(p, p + 1, strlen(p));
940 while ((p = strchr(p, ':')))
943 #if FF_API_OLD_FILTER_OPTS
945 av_log(filter, AV_LOG_WARNING, "This syntax is deprecated. Use "
946 "'|' to separate the list items.\n");
948 av_log(filter, AV_LOG_DEBUG, "compat: called with args=[%s]\n", copy);
949 ret = process_options(filter, &options, copy);
952 av_log(filter, AV_LOG_ERROR, "This syntax is deprecated. Use "
953 "'|' to separate the list items ('%s' instead of '%s')\n",
955 ret = AVERROR(EINVAL);
957 ret = process_options(filter, &options, copy);
967 ret = process_options(filter, &options, args);
973 ret = avfilter_init_dict(filter, &options);
977 if ((e = av_dict_get(options, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
978 av_log(filter, AV_LOG_ERROR, "No such option: %s.\n", e->key);
979 ret = AVERROR_OPTION_NOT_FOUND;
984 av_dict_free(&options);
989 const char *avfilter_pad_get_name(const AVFilterPad *pads, int pad_idx)
991 return pads[pad_idx].name;
994 enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx)
996 return pads[pad_idx].type;
999 static int default_filter_frame(AVFilterLink *link, AVFrame *frame)
1001 return ff_filter_frame(link->dst->outputs[0], frame);
1004 static int ff_filter_frame_framed(AVFilterLink *link, AVFrame *frame)
1006 int (*filter_frame)(AVFilterLink *, AVFrame *);
1007 AVFilterContext *dstctx = link->dst;
1008 AVFilterPad *dst = link->dstpad;
1009 AVFrame *out = NULL;
1011 AVFilterCommand *cmd= link->dst->command_queue;
1015 av_frame_free(&frame);
1019 if (!(filter_frame = dst->filter_frame))
1020 filter_frame = default_filter_frame;
1022 /* copy the frame if needed */
1023 if (dst->needs_writable && !av_frame_is_writable(frame)) {
1024 av_log(link->dst, AV_LOG_DEBUG, "Copying data in avfilter.\n");
1026 switch (link->type) {
1027 case AVMEDIA_TYPE_VIDEO:
1028 out = ff_get_video_buffer(link, link->w, link->h);
1030 case AVMEDIA_TYPE_AUDIO:
1031 out = ff_get_audio_buffer(link, frame->nb_samples);
1034 ret = AVERROR(EINVAL);
1038 ret = AVERROR(ENOMEM);
1042 ret = av_frame_copy_props(out, frame);
1046 switch (link->type) {
1047 case AVMEDIA_TYPE_VIDEO:
1048 av_image_copy(out->data, out->linesize, (const uint8_t **)frame->data, frame->linesize,
1049 frame->format, frame->width, frame->height);
1051 case AVMEDIA_TYPE_AUDIO:
1052 av_samples_copy(out->extended_data, frame->extended_data,
1053 0, 0, frame->nb_samples,
1054 av_get_channel_layout_nb_channels(frame->channel_layout),
1058 ret = AVERROR(EINVAL);
1062 av_frame_free(&frame);
1066 while(cmd && cmd->time <= out->pts * av_q2d(link->time_base)){
1067 av_log(link->dst, AV_LOG_DEBUG,
1068 "Processing command time:%f command:%s arg:%s\n",
1069 cmd->time, cmd->command, cmd->arg);
1070 avfilter_process_command(link->dst, cmd->command, cmd->arg, 0, 0, cmd->flags);
1071 ff_command_queue_pop(link->dst);
1072 cmd= link->dst->command_queue;
1076 if (dstctx->enable_str) {
1077 int64_t pos = av_frame_get_pkt_pos(out);
1078 dstctx->var_values[VAR_N] = link->frame_count;
1079 dstctx->var_values[VAR_T] = pts == AV_NOPTS_VALUE ? NAN : pts * av_q2d(link->time_base);
1080 dstctx->var_values[VAR_W] = link->w;
1081 dstctx->var_values[VAR_H] = link->h;
1082 dstctx->var_values[VAR_POS] = pos == -1 ? NAN : pos;
1084 dstctx->is_disabled = fabs(av_expr_eval(dstctx->enable, dstctx->var_values, NULL)) < 0.5;
1085 if (dstctx->is_disabled &&
1086 (dstctx->filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC))
1087 filter_frame = default_filter_frame;
1089 ret = filter_frame(link, out);
1090 link->frame_count++;
1091 link->frame_requested = 0;
1092 ff_update_link_current_pts(link, pts);
1096 av_frame_free(&out);
1097 av_frame_free(&frame);
1101 static int ff_filter_frame_needs_framing(AVFilterLink *link, AVFrame *frame)
1103 int insamples = frame->nb_samples, inpos = 0, nb_samples;
1104 AVFrame *pbuf = link->partial_buf;
1105 int nb_channels = av_frame_get_channels(frame);
1108 link->flags |= FF_LINK_FLAG_REQUEST_LOOP;
1109 /* Handle framing (min_samples, max_samples) */
1112 AVRational samples_tb = { 1, link->sample_rate };
1113 pbuf = ff_get_audio_buffer(link, link->partial_buf_size);
1115 av_log(link->dst, AV_LOG_WARNING,
1116 "Samples dropped due to memory allocation failure.\n");
1119 av_frame_copy_props(pbuf, frame);
1120 pbuf->pts = frame->pts;
1121 if (pbuf->pts != AV_NOPTS_VALUE)
1122 pbuf->pts += av_rescale_q(inpos, samples_tb, link->time_base);
1123 pbuf->nb_samples = 0;
1125 nb_samples = FFMIN(insamples,
1126 link->partial_buf_size - pbuf->nb_samples);
1127 av_samples_copy(pbuf->extended_data, frame->extended_data,
1128 pbuf->nb_samples, inpos,
1129 nb_samples, nb_channels, link->format);
1130 inpos += nb_samples;
1131 insamples -= nb_samples;
1132 pbuf->nb_samples += nb_samples;
1133 if (pbuf->nb_samples >= link->min_samples) {
1134 ret = ff_filter_frame_framed(link, pbuf);
1138 av_frame_free(&frame);
1139 link->partial_buf = pbuf;
1143 int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
1145 FF_TPRINTF_START(NULL, filter_frame); ff_tlog_link(NULL, link, 1); ff_tlog(NULL, " "); ff_tlog_ref(NULL, frame, 1);
1147 /* Consistency checks */
1148 if (link->type == AVMEDIA_TYPE_VIDEO) {
1149 if (strcmp(link->dst->filter->name, "buffersink") &&
1150 strcmp(link->dst->filter->name, "format") &&
1151 strcmp(link->dst->filter->name, "idet") &&
1152 strcmp(link->dst->filter->name, "null") &&
1153 strcmp(link->dst->filter->name, "scale")) {
1154 av_assert1(frame->format == link->format);
1155 av_assert1(frame->width == link->w);
1156 av_assert1(frame->height == link->h);
1159 av_assert1(frame->format == link->format);
1160 av_assert1(av_frame_get_channels(frame) == link->channels);
1161 av_assert1(frame->channel_layout == link->channel_layout);
1162 av_assert1(frame->sample_rate == link->sample_rate);
1165 /* Go directly to actual filtering if possible */
1166 if (link->type == AVMEDIA_TYPE_AUDIO &&
1167 link->min_samples &&
1168 (link->partial_buf ||
1169 frame->nb_samples < link->min_samples ||
1170 frame->nb_samples > link->max_samples)) {
1171 return ff_filter_frame_needs_framing(link, frame);
1173 return ff_filter_frame_framed(link, frame);
1177 const AVClass *avfilter_get_class(void)
1179 return &avfilter_class;