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636631d9db
Some of these were made possible by moving several common macros to libavutil/macros.h. While just at it, also improve the other headers a bit. Reviewed-by: Martin Storsjö <martin@martin.st> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
1341 lines
47 KiB
C
1341 lines
47 KiB
C
/*
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* filter graphs
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* Copyright (c) 2008 Vitor Sessak
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* Copyright (c) 2007 Bobby Bingham
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include <string.h>
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#include "libavutil/avassert.h"
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#include "libavutil/bprint.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#define FF_INTERNAL_FIELDS 1
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#include "framequeue.h"
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#include "avfilter.h"
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#include "buffersink.h"
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#include "formats.h"
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#include "internal.h"
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#include "thread.h"
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#define OFFSET(x) offsetof(AVFilterGraph, x)
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#define F AV_OPT_FLAG_FILTERING_PARAM
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#define V AV_OPT_FLAG_VIDEO_PARAM
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#define A AV_OPT_FLAG_AUDIO_PARAM
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static const AVOption filtergraph_options[] = {
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{ "thread_type", "Allowed thread types", OFFSET(thread_type), AV_OPT_TYPE_FLAGS,
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{ .i64 = AVFILTER_THREAD_SLICE }, 0, INT_MAX, F|V|A, "thread_type" },
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{ "slice", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVFILTER_THREAD_SLICE }, .flags = F|V|A, .unit = "thread_type" },
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{ "threads", "Maximum number of threads", OFFSET(nb_threads), AV_OPT_TYPE_INT,
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{ .i64 = 0 }, 0, INT_MAX, F|V|A, "threads"},
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{"auto", "autodetect a suitable number of threads to use", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, .flags = F|V|A, .unit = "threads"},
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{"scale_sws_opts" , "default scale filter options" , OFFSET(scale_sws_opts) ,
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AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, F|V },
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{"aresample_swr_opts" , "default aresample filter options" , OFFSET(aresample_swr_opts) ,
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AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, F|A },
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{ NULL },
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};
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static const AVClass filtergraph_class = {
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.class_name = "AVFilterGraph",
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.item_name = av_default_item_name,
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.version = LIBAVUTIL_VERSION_INT,
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.option = filtergraph_options,
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.category = AV_CLASS_CATEGORY_FILTER,
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};
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#if !HAVE_THREADS
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void ff_graph_thread_free(AVFilterGraph *graph)
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{
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}
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int ff_graph_thread_init(AVFilterGraph *graph)
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{
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graph->thread_type = 0;
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graph->nb_threads = 1;
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return 0;
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}
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#endif
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AVFilterGraph *avfilter_graph_alloc(void)
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{
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AVFilterGraph *ret = av_mallocz(sizeof(*ret));
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if (!ret)
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return NULL;
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ret->internal = av_mallocz(sizeof(*ret->internal));
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if (!ret->internal) {
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av_freep(&ret);
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return NULL;
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}
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ret->av_class = &filtergraph_class;
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av_opt_set_defaults(ret);
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ff_framequeue_global_init(&ret->internal->frame_queues);
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return ret;
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}
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void ff_filter_graph_remove_filter(AVFilterGraph *graph, AVFilterContext *filter)
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{
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int i, j;
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for (i = 0; i < graph->nb_filters; i++) {
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if (graph->filters[i] == filter) {
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FFSWAP(AVFilterContext*, graph->filters[i],
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graph->filters[graph->nb_filters - 1]);
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graph->nb_filters--;
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filter->graph = NULL;
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for (j = 0; j<filter->nb_outputs; j++)
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if (filter->outputs[j])
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filter->outputs[j]->graph = NULL;
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return;
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}
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}
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}
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void avfilter_graph_free(AVFilterGraph **graph)
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{
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if (!*graph)
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return;
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while ((*graph)->nb_filters)
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avfilter_free((*graph)->filters[0]);
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ff_graph_thread_free(*graph);
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av_freep(&(*graph)->sink_links);
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av_opt_free(*graph);
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av_freep(&(*graph)->filters);
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av_freep(&(*graph)->internal);
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av_freep(graph);
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}
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int avfilter_graph_create_filter(AVFilterContext **filt_ctx, const AVFilter *filt,
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const char *name, const char *args, void *opaque,
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AVFilterGraph *graph_ctx)
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{
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int ret;
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*filt_ctx = avfilter_graph_alloc_filter(graph_ctx, filt, name);
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if (!*filt_ctx)
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return AVERROR(ENOMEM);
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ret = avfilter_init_str(*filt_ctx, args);
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if (ret < 0)
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goto fail;
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return 0;
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fail:
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avfilter_free(*filt_ctx);
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*filt_ctx = NULL;
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return ret;
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}
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void avfilter_graph_set_auto_convert(AVFilterGraph *graph, unsigned flags)
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{
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graph->disable_auto_convert = flags;
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}
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AVFilterContext *avfilter_graph_alloc_filter(AVFilterGraph *graph,
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const AVFilter *filter,
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const char *name)
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{
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AVFilterContext **filters, *s;
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if (graph->thread_type && !graph->internal->thread_execute) {
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if (graph->execute) {
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graph->internal->thread_execute = graph->execute;
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} else {
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int ret = ff_graph_thread_init(graph);
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if (ret < 0) {
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av_log(graph, AV_LOG_ERROR, "Error initializing threading: %s.\n", av_err2str(ret));
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return NULL;
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}
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}
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}
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filters = av_realloc_array(graph->filters, graph->nb_filters + 1, sizeof(*filters));
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if (!filters)
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return NULL;
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graph->filters = filters;
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s = ff_filter_alloc(filter, name);
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if (!s)
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return NULL;
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graph->filters[graph->nb_filters++] = s;
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s->graph = graph;
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return s;
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}
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/**
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* Check for the validity of graph.
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*
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* A graph is considered valid if all its input and output pads are
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* connected.
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*
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* @return >= 0 in case of success, a negative value otherwise
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*/
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static int graph_check_validity(AVFilterGraph *graph, void *log_ctx)
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{
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AVFilterContext *filt;
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int i, j;
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for (i = 0; i < graph->nb_filters; i++) {
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const AVFilterPad *pad;
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filt = graph->filters[i];
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for (j = 0; j < filt->nb_inputs; j++) {
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if (!filt->inputs[j] || !filt->inputs[j]->src) {
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pad = &filt->input_pads[j];
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av_log(log_ctx, AV_LOG_ERROR,
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"Input pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any source\n",
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pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name);
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return AVERROR(EINVAL);
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}
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}
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for (j = 0; j < filt->nb_outputs; j++) {
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if (!filt->outputs[j] || !filt->outputs[j]->dst) {
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pad = &filt->output_pads[j];
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av_log(log_ctx, AV_LOG_ERROR,
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"Output pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any destination\n",
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pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name);
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return AVERROR(EINVAL);
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}
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}
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}
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return 0;
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}
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/**
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* Configure all the links of graphctx.
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*
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* @return >= 0 in case of success, a negative value otherwise
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*/
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static int graph_config_links(AVFilterGraph *graph, void *log_ctx)
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{
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AVFilterContext *filt;
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int i, ret;
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for (i = 0; i < graph->nb_filters; i++) {
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filt = graph->filters[i];
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if (!filt->nb_outputs) {
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if ((ret = avfilter_config_links(filt)))
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return ret;
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}
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}
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return 0;
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}
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static int graph_check_links(AVFilterGraph *graph, void *log_ctx)
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{
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AVFilterContext *f;
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AVFilterLink *l;
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unsigned i, j;
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int ret;
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for (i = 0; i < graph->nb_filters; i++) {
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f = graph->filters[i];
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for (j = 0; j < f->nb_outputs; j++) {
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l = f->outputs[j];
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if (l->type == AVMEDIA_TYPE_VIDEO) {
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ret = av_image_check_size2(l->w, l->h, INT64_MAX, l->format, 0, f);
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if (ret < 0)
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return ret;
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}
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}
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}
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return 0;
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}
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AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, const char *name)
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{
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int i;
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for (i = 0; i < graph->nb_filters; i++)
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if (graph->filters[i]->name && !strcmp(name, graph->filters[i]->name))
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return graph->filters[i];
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return NULL;
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}
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static int filter_link_check_formats(void *log, AVFilterLink *link, AVFilterFormatsConfig *cfg)
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{
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int ret;
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switch (link->type) {
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case AVMEDIA_TYPE_VIDEO:
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if ((ret = ff_formats_check_pixel_formats(log, cfg->formats)) < 0)
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return ret;
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break;
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case AVMEDIA_TYPE_AUDIO:
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if ((ret = ff_formats_check_sample_formats(log, cfg->formats)) < 0 ||
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(ret = ff_formats_check_sample_rates(log, cfg->samplerates)) < 0 ||
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(ret = ff_formats_check_channel_layouts(log, cfg->channel_layouts)) < 0)
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return ret;
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break;
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default:
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av_assert0(!"reached");
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}
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return 0;
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}
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/**
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* Check the validity of the formats / etc. lists set by query_formats().
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*
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* In particular, check they do not contain any redundant element.
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*/
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static int filter_check_formats(AVFilterContext *ctx)
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{
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unsigned i;
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int ret;
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for (i = 0; i < ctx->nb_inputs; i++) {
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ret = filter_link_check_formats(ctx, ctx->inputs[i], &ctx->inputs[i]->outcfg);
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if (ret < 0)
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return ret;
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}
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for (i = 0; i < ctx->nb_outputs; i++) {
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ret = filter_link_check_formats(ctx, ctx->outputs[i], &ctx->outputs[i]->incfg);
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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static int filter_query_formats(AVFilterContext *ctx)
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{
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int ret;
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AVFilterFormats *formats;
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AVFilterChannelLayouts *chlayouts;
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enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type :
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ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type :
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AVMEDIA_TYPE_VIDEO;
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if ((ret = ctx->filter->formats.query_func(ctx)) < 0) {
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if (ret != AVERROR(EAGAIN))
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av_log(ctx, AV_LOG_ERROR, "Query format failed for '%s': %s\n",
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ctx->name, av_err2str(ret));
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return ret;
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}
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ret = filter_check_formats(ctx);
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if (ret < 0)
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return ret;
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formats = ff_all_formats(type);
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if ((ret = ff_set_common_formats(ctx, formats)) < 0)
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return ret;
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if (type == AVMEDIA_TYPE_AUDIO) {
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if ((ret = ff_set_common_all_samplerates(ctx)) < 0)
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return ret;
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chlayouts = ff_all_channel_layouts();
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if ((ret = ff_set_common_channel_layouts(ctx, chlayouts)) < 0)
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return ret;
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}
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return 0;
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}
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static int formats_declared(AVFilterContext *f)
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{
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int i;
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for (i = 0; i < f->nb_inputs; i++) {
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if (!f->inputs[i]->outcfg.formats)
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return 0;
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if (f->inputs[i]->type == AVMEDIA_TYPE_AUDIO &&
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!(f->inputs[i]->outcfg.samplerates &&
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f->inputs[i]->outcfg.channel_layouts))
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return 0;
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}
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for (i = 0; i < f->nb_outputs; i++) {
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if (!f->outputs[i]->incfg.formats)
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return 0;
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if (f->outputs[i]->type == AVMEDIA_TYPE_AUDIO &&
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!(f->outputs[i]->incfg.samplerates &&
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f->outputs[i]->incfg.channel_layouts))
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return 0;
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}
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return 1;
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}
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/**
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* Perform one round of query_formats() and merging formats lists on the
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* filter graph.
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* @return >=0 if all links formats lists could be queried and merged;
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* AVERROR(EAGAIN) some progress was made in the queries or merging
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* and a later call may succeed;
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* AVERROR(EIO) (may be changed) plus a log message if no progress
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* was made and the negotiation is stuck;
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* a negative error code if some other error happened
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*/
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static int query_formats(AVFilterGraph *graph, void *log_ctx)
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{
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int i, j, ret;
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int converter_count = 0;
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int count_queried = 0; /* successful calls to query_formats() */
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int count_merged = 0; /* successful merge of formats lists */
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int count_already_merged = 0; /* lists already merged */
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int count_delayed = 0; /* lists that need to be merged later */
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for (i = 0; i < graph->nb_filters; i++) {
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AVFilterContext *f = graph->filters[i];
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if (formats_declared(f))
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continue;
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if (f->filter->formats_state == FF_FILTER_FORMATS_QUERY_FUNC)
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ret = filter_query_formats(f);
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else
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ret = ff_default_query_formats(f);
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if (ret < 0 && ret != AVERROR(EAGAIN))
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return ret;
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/* note: EAGAIN could indicate a partial success, not counted yet */
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count_queried += ret >= 0;
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}
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/* go through and merge as many format lists as possible */
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for (i = 0; i < graph->nb_filters; i++) {
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AVFilterContext *filter = graph->filters[i];
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for (j = 0; j < filter->nb_inputs; j++) {
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AVFilterLink *link = filter->inputs[j];
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const AVFilterNegotiation *neg;
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unsigned neg_step;
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int convert_needed = 0;
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if (!link)
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continue;
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neg = ff_filter_get_negotiation(link);
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av_assert0(neg);
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for (neg_step = 1; neg_step < neg->nb_mergers; neg_step++) {
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const AVFilterFormatsMerger *m = &neg->mergers[neg_step];
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void *a = FF_FIELD_AT(void *, m->offset, link->incfg);
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void *b = FF_FIELD_AT(void *, m->offset, link->outcfg);
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if (a && b && a != b && !m->can_merge(a, b)) {
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convert_needed = 1;
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break;
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}
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}
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for (neg_step = 0; neg_step < neg->nb_mergers; neg_step++) {
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const AVFilterFormatsMerger *m = &neg->mergers[neg_step];
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void *a = FF_FIELD_AT(void *, m->offset, link->incfg);
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void *b = FF_FIELD_AT(void *, m->offset, link->outcfg);
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if (!(a && b)) {
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count_delayed++;
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} else if (a == b) {
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count_already_merged++;
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} else if (!convert_needed) {
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count_merged++;
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ret = m->merge(a, b);
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if (ret < 0)
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return ret;
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if (!ret)
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convert_needed = 1;
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}
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}
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if (convert_needed) {
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AVFilterContext *convert;
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const AVFilter *filter;
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AVFilterLink *inlink, *outlink;
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char inst_name[30];
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const char *opts;
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if (graph->disable_auto_convert) {
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av_log(log_ctx, AV_LOG_ERROR,
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"The filters '%s' and '%s' do not have a common format "
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"and automatic conversion is disabled.\n",
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link->src->name, link->dst->name);
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return AVERROR(EINVAL);
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}
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/* couldn't merge format lists. auto-insert conversion filter */
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if (!(filter = avfilter_get_by_name(neg->conversion_filter))) {
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av_log(log_ctx, AV_LOG_ERROR,
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"'%s' filter not present, cannot convert formats.\n",
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neg->conversion_filter);
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return AVERROR(EINVAL);
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}
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snprintf(inst_name, sizeof(inst_name), "auto_%s_%d",
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neg->conversion_filter, converter_count++);
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opts = FF_FIELD_AT(char *, neg->conversion_opts_offset, *graph);
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ret = avfilter_graph_create_filter(&convert, filter, inst_name, opts, NULL, graph);
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if (ret < 0)
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return ret;
|
|
if ((ret = avfilter_insert_filter(link, convert, 0, 0)) < 0)
|
|
return ret;
|
|
|
|
if ((ret = filter_query_formats(convert)) < 0)
|
|
return ret;
|
|
|
|
inlink = convert->inputs[0];
|
|
outlink = convert->outputs[0];
|
|
av_assert0( inlink->incfg.formats->refcount > 0);
|
|
av_assert0( inlink->outcfg.formats->refcount > 0);
|
|
av_assert0(outlink->incfg.formats->refcount > 0);
|
|
av_assert0(outlink->outcfg.formats->refcount > 0);
|
|
if (outlink->type == AVMEDIA_TYPE_AUDIO) {
|
|
av_assert0( inlink-> incfg.samplerates->refcount > 0);
|
|
av_assert0( inlink->outcfg.samplerates->refcount > 0);
|
|
av_assert0(outlink-> incfg.samplerates->refcount > 0);
|
|
av_assert0(outlink->outcfg.samplerates->refcount > 0);
|
|
av_assert0( inlink-> incfg.channel_layouts->refcount > 0);
|
|
av_assert0( inlink->outcfg.channel_layouts->refcount > 0);
|
|
av_assert0(outlink-> incfg.channel_layouts->refcount > 0);
|
|
av_assert0(outlink->outcfg.channel_layouts->refcount > 0);
|
|
}
|
|
#define MERGE(merger, link) \
|
|
((merger)->merge(FF_FIELD_AT(void *, (merger)->offset, (link)->incfg), \
|
|
FF_FIELD_AT(void *, (merger)->offset, (link)->outcfg)))
|
|
for (neg_step = 0; neg_step < neg->nb_mergers; neg_step++) {
|
|
const AVFilterFormatsMerger *m = &neg->mergers[neg_step];
|
|
if ((ret = MERGE(m, inlink)) <= 0 ||
|
|
(ret = MERGE(m, outlink)) <= 0) {
|
|
if (ret < 0)
|
|
return ret;
|
|
av_log(log_ctx, AV_LOG_ERROR,
|
|
"Impossible to convert between the formats supported by the filter "
|
|
"'%s' and the filter '%s'\n", link->src->name, link->dst->name);
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
av_log(graph, AV_LOG_DEBUG, "query_formats: "
|
|
"%d queried, %d merged, %d already done, %d delayed\n",
|
|
count_queried, count_merged, count_already_merged, count_delayed);
|
|
if (count_delayed) {
|
|
AVBPrint bp;
|
|
|
|
/* if count_queried > 0, one filter at least did set its formats,
|
|
that will give additional information to its neighbour;
|
|
if count_merged > 0, one pair of formats lists at least was merged,
|
|
that will give additional information to all connected filters;
|
|
in both cases, progress was made and a new round must be done */
|
|
if (count_queried || count_merged)
|
|
return AVERROR(EAGAIN);
|
|
av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
|
|
for (i = 0; i < graph->nb_filters; i++)
|
|
if (!formats_declared(graph->filters[i]))
|
|
av_bprintf(&bp, "%s%s", bp.len ? ", " : "",
|
|
graph->filters[i]->name);
|
|
av_log(graph, AV_LOG_ERROR,
|
|
"The following filters could not choose their formats: %s\n"
|
|
"Consider inserting the (a)format filter near their input or "
|
|
"output.\n", bp.str);
|
|
return AVERROR(EIO);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int get_fmt_score(enum AVSampleFormat dst_fmt, enum AVSampleFormat src_fmt)
|
|
{
|
|
int score = 0;
|
|
|
|
if (av_sample_fmt_is_planar(dst_fmt) != av_sample_fmt_is_planar(src_fmt))
|
|
score ++;
|
|
|
|
if (av_get_bytes_per_sample(dst_fmt) < av_get_bytes_per_sample(src_fmt)) {
|
|
score += 100 * (av_get_bytes_per_sample(src_fmt) - av_get_bytes_per_sample(dst_fmt));
|
|
}else
|
|
score += 10 * (av_get_bytes_per_sample(dst_fmt) - av_get_bytes_per_sample(src_fmt));
|
|
|
|
if (av_get_packed_sample_fmt(dst_fmt) == AV_SAMPLE_FMT_S32 &&
|
|
av_get_packed_sample_fmt(src_fmt) == AV_SAMPLE_FMT_FLT)
|
|
score += 20;
|
|
|
|
if (av_get_packed_sample_fmt(dst_fmt) == AV_SAMPLE_FMT_FLT &&
|
|
av_get_packed_sample_fmt(src_fmt) == AV_SAMPLE_FMT_S32)
|
|
score += 2;
|
|
|
|
return score;
|
|
}
|
|
|
|
static enum AVSampleFormat find_best_sample_fmt_of_2(enum AVSampleFormat dst_fmt1, enum AVSampleFormat dst_fmt2,
|
|
enum AVSampleFormat src_fmt)
|
|
{
|
|
int score1, score2;
|
|
|
|
score1 = get_fmt_score(dst_fmt1, src_fmt);
|
|
score2 = get_fmt_score(dst_fmt2, src_fmt);
|
|
|
|
return score1 < score2 ? dst_fmt1 : dst_fmt2;
|
|
}
|
|
|
|
static int pick_format(AVFilterLink *link, AVFilterLink *ref)
|
|
{
|
|
if (!link || !link->incfg.formats)
|
|
return 0;
|
|
|
|
if (link->type == AVMEDIA_TYPE_VIDEO) {
|
|
if(ref && ref->type == AVMEDIA_TYPE_VIDEO){
|
|
//FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
|
|
int has_alpha= av_pix_fmt_desc_get(ref->format)->nb_components % 2 == 0;
|
|
enum AVPixelFormat best= AV_PIX_FMT_NONE;
|
|
int i;
|
|
for (i = 0; i < link->incfg.formats->nb_formats; i++) {
|
|
enum AVPixelFormat p = link->incfg.formats->formats[i];
|
|
best= av_find_best_pix_fmt_of_2(best, p, ref->format, has_alpha, NULL);
|
|
}
|
|
av_log(link->src,AV_LOG_DEBUG, "picking %s out of %d ref:%s alpha:%d\n",
|
|
av_get_pix_fmt_name(best), link->incfg.formats->nb_formats,
|
|
av_get_pix_fmt_name(ref->format), has_alpha);
|
|
link->incfg.formats->formats[0] = best;
|
|
}
|
|
} else if (link->type == AVMEDIA_TYPE_AUDIO) {
|
|
if(ref && ref->type == AVMEDIA_TYPE_AUDIO){
|
|
enum AVSampleFormat best= AV_SAMPLE_FMT_NONE;
|
|
int i;
|
|
for (i = 0; i < link->incfg.formats->nb_formats; i++) {
|
|
enum AVSampleFormat p = link->incfg.formats->formats[i];
|
|
best = find_best_sample_fmt_of_2(best, p, ref->format);
|
|
}
|
|
av_log(link->src,AV_LOG_DEBUG, "picking %s out of %d ref:%s\n",
|
|
av_get_sample_fmt_name(best), link->incfg.formats->nb_formats,
|
|
av_get_sample_fmt_name(ref->format));
|
|
link->incfg.formats->formats[0] = best;
|
|
}
|
|
}
|
|
|
|
link->incfg.formats->nb_formats = 1;
|
|
link->format = link->incfg.formats->formats[0];
|
|
|
|
if (link->type == AVMEDIA_TYPE_AUDIO) {
|
|
if (!link->incfg.samplerates->nb_formats) {
|
|
av_log(link->src, AV_LOG_ERROR, "Cannot select sample rate for"
|
|
" the link between filters %s and %s.\n", link->src->name,
|
|
link->dst->name);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
link->incfg.samplerates->nb_formats = 1;
|
|
link->sample_rate = link->incfg.samplerates->formats[0];
|
|
|
|
if (link->incfg.channel_layouts->all_layouts) {
|
|
av_log(link->src, AV_LOG_ERROR, "Cannot select channel layout for"
|
|
" the link between filters %s and %s.\n", link->src->name,
|
|
link->dst->name);
|
|
if (!link->incfg.channel_layouts->all_counts)
|
|
av_log(link->src, AV_LOG_ERROR, "Unknown channel layouts not "
|
|
"supported, try specifying a channel layout using "
|
|
"'aformat=channel_layouts=something'.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
link->incfg.channel_layouts->nb_channel_layouts = 1;
|
|
link->channel_layout = link->incfg.channel_layouts->channel_layouts[0];
|
|
if ((link->channels = FF_LAYOUT2COUNT(link->channel_layout)))
|
|
link->channel_layout = 0;
|
|
else
|
|
link->channels = av_get_channel_layout_nb_channels(link->channel_layout);
|
|
}
|
|
|
|
ff_formats_unref(&link->incfg.formats);
|
|
ff_formats_unref(&link->outcfg.formats);
|
|
ff_formats_unref(&link->incfg.samplerates);
|
|
ff_formats_unref(&link->outcfg.samplerates);
|
|
ff_channel_layouts_unref(&link->incfg.channel_layouts);
|
|
ff_channel_layouts_unref(&link->outcfg.channel_layouts);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define REDUCE_FORMATS(fmt_type, list_type, list, var, nb, add_format) \
|
|
do { \
|
|
for (i = 0; i < filter->nb_inputs; i++) { \
|
|
AVFilterLink *link = filter->inputs[i]; \
|
|
fmt_type fmt; \
|
|
\
|
|
if (!link->outcfg.list || link->outcfg.list->nb != 1) \
|
|
continue; \
|
|
fmt = link->outcfg.list->var[0]; \
|
|
\
|
|
for (j = 0; j < filter->nb_outputs; j++) { \
|
|
AVFilterLink *out_link = filter->outputs[j]; \
|
|
list_type *fmts; \
|
|
\
|
|
if (link->type != out_link->type || \
|
|
out_link->incfg.list->nb == 1) \
|
|
continue; \
|
|
fmts = out_link->incfg.list; \
|
|
\
|
|
if (!out_link->incfg.list->nb) { \
|
|
if ((ret = add_format(&out_link->incfg.list, fmt)) < 0)\
|
|
return ret; \
|
|
ret = 1; \
|
|
break; \
|
|
} \
|
|
\
|
|
for (k = 0; k < out_link->incfg.list->nb; k++) \
|
|
if (fmts->var[k] == fmt) { \
|
|
fmts->var[0] = fmt; \
|
|
fmts->nb = 1; \
|
|
ret = 1; \
|
|
break; \
|
|
} \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
static int reduce_formats_on_filter(AVFilterContext *filter)
|
|
{
|
|
int i, j, k, ret = 0;
|
|
|
|
REDUCE_FORMATS(int, AVFilterFormats, formats, formats,
|
|
nb_formats, ff_add_format);
|
|
REDUCE_FORMATS(int, AVFilterFormats, samplerates, formats,
|
|
nb_formats, ff_add_format);
|
|
|
|
/* reduce channel layouts */
|
|
for (i = 0; i < filter->nb_inputs; i++) {
|
|
AVFilterLink *inlink = filter->inputs[i];
|
|
uint64_t fmt;
|
|
|
|
if (!inlink->outcfg.channel_layouts ||
|
|
inlink->outcfg.channel_layouts->nb_channel_layouts != 1)
|
|
continue;
|
|
fmt = inlink->outcfg.channel_layouts->channel_layouts[0];
|
|
|
|
for (j = 0; j < filter->nb_outputs; j++) {
|
|
AVFilterLink *outlink = filter->outputs[j];
|
|
AVFilterChannelLayouts *fmts;
|
|
|
|
fmts = outlink->incfg.channel_layouts;
|
|
if (inlink->type != outlink->type || fmts->nb_channel_layouts == 1)
|
|
continue;
|
|
|
|
if (fmts->all_layouts &&
|
|
(!FF_LAYOUT2COUNT(fmt) || fmts->all_counts)) {
|
|
/* Turn the infinite list into a singleton */
|
|
fmts->all_layouts = fmts->all_counts = 0;
|
|
if (ff_add_channel_layout(&outlink->incfg.channel_layouts, fmt) < 0)
|
|
ret = 1;
|
|
break;
|
|
}
|
|
|
|
for (k = 0; k < outlink->incfg.channel_layouts->nb_channel_layouts; k++) {
|
|
if (fmts->channel_layouts[k] == fmt) {
|
|
fmts->channel_layouts[0] = fmt;
|
|
fmts->nb_channel_layouts = 1;
|
|
ret = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int reduce_formats(AVFilterGraph *graph)
|
|
{
|
|
int i, reduced, ret;
|
|
|
|
do {
|
|
reduced = 0;
|
|
|
|
for (i = 0; i < graph->nb_filters; i++) {
|
|
if ((ret = reduce_formats_on_filter(graph->filters[i])) < 0)
|
|
return ret;
|
|
reduced |= ret;
|
|
}
|
|
} while (reduced);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void swap_samplerates_on_filter(AVFilterContext *filter)
|
|
{
|
|
AVFilterLink *link = NULL;
|
|
int sample_rate;
|
|
int i, j;
|
|
|
|
for (i = 0; i < filter->nb_inputs; i++) {
|
|
link = filter->inputs[i];
|
|
|
|
if (link->type == AVMEDIA_TYPE_AUDIO &&
|
|
link->outcfg.samplerates->nb_formats== 1)
|
|
break;
|
|
}
|
|
if (i == filter->nb_inputs)
|
|
return;
|
|
|
|
sample_rate = link->outcfg.samplerates->formats[0];
|
|
|
|
for (i = 0; i < filter->nb_outputs; i++) {
|
|
AVFilterLink *outlink = filter->outputs[i];
|
|
int best_idx, best_diff = INT_MAX;
|
|
|
|
if (outlink->type != AVMEDIA_TYPE_AUDIO ||
|
|
outlink->incfg.samplerates->nb_formats < 2)
|
|
continue;
|
|
|
|
for (j = 0; j < outlink->incfg.samplerates->nb_formats; j++) {
|
|
int diff = abs(sample_rate - outlink->incfg.samplerates->formats[j]);
|
|
|
|
av_assert0(diff < INT_MAX); // This would lead to the use of uninitialized best_diff but is only possible with invalid sample rates
|
|
|
|
if (diff < best_diff) {
|
|
best_diff = diff;
|
|
best_idx = j;
|
|
}
|
|
}
|
|
FFSWAP(int, outlink->incfg.samplerates->formats[0],
|
|
outlink->incfg.samplerates->formats[best_idx]);
|
|
}
|
|
}
|
|
|
|
static void swap_samplerates(AVFilterGraph *graph)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < graph->nb_filters; i++)
|
|
swap_samplerates_on_filter(graph->filters[i]);
|
|
}
|
|
|
|
#define CH_CENTER_PAIR (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER)
|
|
#define CH_FRONT_PAIR (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT)
|
|
#define CH_STEREO_PAIR (AV_CH_STEREO_LEFT | AV_CH_STEREO_RIGHT)
|
|
#define CH_WIDE_PAIR (AV_CH_WIDE_LEFT | AV_CH_WIDE_RIGHT)
|
|
#define CH_SIDE_PAIR (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT)
|
|
#define CH_DIRECT_PAIR (AV_CH_SURROUND_DIRECT_LEFT | AV_CH_SURROUND_DIRECT_RIGHT)
|
|
#define CH_BACK_PAIR (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT)
|
|
|
|
/* allowable substitutions for channel pairs when comparing layouts,
|
|
* ordered by priority for both values */
|
|
static const uint64_t ch_subst[][2] = {
|
|
{ CH_FRONT_PAIR, CH_CENTER_PAIR },
|
|
{ CH_FRONT_PAIR, CH_WIDE_PAIR },
|
|
{ CH_FRONT_PAIR, AV_CH_FRONT_CENTER },
|
|
{ CH_CENTER_PAIR, CH_FRONT_PAIR },
|
|
{ CH_CENTER_PAIR, CH_WIDE_PAIR },
|
|
{ CH_CENTER_PAIR, AV_CH_FRONT_CENTER },
|
|
{ CH_WIDE_PAIR, CH_FRONT_PAIR },
|
|
{ CH_WIDE_PAIR, CH_CENTER_PAIR },
|
|
{ CH_WIDE_PAIR, AV_CH_FRONT_CENTER },
|
|
{ AV_CH_FRONT_CENTER, CH_FRONT_PAIR },
|
|
{ AV_CH_FRONT_CENTER, CH_CENTER_PAIR },
|
|
{ AV_CH_FRONT_CENTER, CH_WIDE_PAIR },
|
|
{ CH_SIDE_PAIR, CH_DIRECT_PAIR },
|
|
{ CH_SIDE_PAIR, CH_BACK_PAIR },
|
|
{ CH_SIDE_PAIR, AV_CH_BACK_CENTER },
|
|
{ CH_BACK_PAIR, CH_DIRECT_PAIR },
|
|
{ CH_BACK_PAIR, CH_SIDE_PAIR },
|
|
{ CH_BACK_PAIR, AV_CH_BACK_CENTER },
|
|
{ AV_CH_BACK_CENTER, CH_BACK_PAIR },
|
|
{ AV_CH_BACK_CENTER, CH_DIRECT_PAIR },
|
|
{ AV_CH_BACK_CENTER, CH_SIDE_PAIR },
|
|
};
|
|
|
|
static void swap_channel_layouts_on_filter(AVFilterContext *filter)
|
|
{
|
|
AVFilterLink *link = NULL;
|
|
int i, j, k;
|
|
|
|
for (i = 0; i < filter->nb_inputs; i++) {
|
|
link = filter->inputs[i];
|
|
|
|
if (link->type == AVMEDIA_TYPE_AUDIO &&
|
|
link->outcfg.channel_layouts->nb_channel_layouts == 1)
|
|
break;
|
|
}
|
|
if (i == filter->nb_inputs)
|
|
return;
|
|
|
|
for (i = 0; i < filter->nb_outputs; i++) {
|
|
AVFilterLink *outlink = filter->outputs[i];
|
|
int best_idx = -1, best_score = INT_MIN, best_count_diff = INT_MAX;
|
|
|
|
if (outlink->type != AVMEDIA_TYPE_AUDIO ||
|
|
outlink->incfg.channel_layouts->nb_channel_layouts < 2)
|
|
continue;
|
|
|
|
for (j = 0; j < outlink->incfg.channel_layouts->nb_channel_layouts; j++) {
|
|
uint64_t in_chlayout = link->outcfg.channel_layouts->channel_layouts[0];
|
|
uint64_t out_chlayout = outlink->incfg.channel_layouts->channel_layouts[j];
|
|
int in_channels = av_get_channel_layout_nb_channels(in_chlayout);
|
|
int out_channels = av_get_channel_layout_nb_channels(out_chlayout);
|
|
int count_diff = out_channels - in_channels;
|
|
int matched_channels, extra_channels;
|
|
int score = 100000;
|
|
|
|
if (FF_LAYOUT2COUNT(in_chlayout) || FF_LAYOUT2COUNT(out_chlayout)) {
|
|
/* Compute score in case the input or output layout encodes
|
|
a channel count; in this case the score is not altered by
|
|
the computation afterwards, as in_chlayout and
|
|
out_chlayout have both been set to 0 */
|
|
if (FF_LAYOUT2COUNT(in_chlayout))
|
|
in_channels = FF_LAYOUT2COUNT(in_chlayout);
|
|
if (FF_LAYOUT2COUNT(out_chlayout))
|
|
out_channels = FF_LAYOUT2COUNT(out_chlayout);
|
|
score -= 10000 + FFABS(out_channels - in_channels) +
|
|
(in_channels > out_channels ? 10000 : 0);
|
|
in_chlayout = out_chlayout = 0;
|
|
/* Let the remaining computation run, even if the score
|
|
value is not altered */
|
|
}
|
|
|
|
/* channel substitution */
|
|
for (k = 0; k < FF_ARRAY_ELEMS(ch_subst); k++) {
|
|
uint64_t cmp0 = ch_subst[k][0];
|
|
uint64_t cmp1 = ch_subst[k][1];
|
|
if (( in_chlayout & cmp0) && (!(out_chlayout & cmp0)) &&
|
|
(out_chlayout & cmp1) && (!( in_chlayout & cmp1))) {
|
|
in_chlayout &= ~cmp0;
|
|
out_chlayout &= ~cmp1;
|
|
/* add score for channel match, minus a deduction for
|
|
having to do the substitution */
|
|
score += 10 * av_get_channel_layout_nb_channels(cmp1) - 2;
|
|
}
|
|
}
|
|
|
|
/* no penalty for LFE channel mismatch */
|
|
if ( (in_chlayout & AV_CH_LOW_FREQUENCY) &&
|
|
(out_chlayout & AV_CH_LOW_FREQUENCY))
|
|
score += 10;
|
|
in_chlayout &= ~AV_CH_LOW_FREQUENCY;
|
|
out_chlayout &= ~AV_CH_LOW_FREQUENCY;
|
|
|
|
matched_channels = av_get_channel_layout_nb_channels(in_chlayout &
|
|
out_chlayout);
|
|
extra_channels = av_get_channel_layout_nb_channels(out_chlayout &
|
|
(~in_chlayout));
|
|
score += 10 * matched_channels - 5 * extra_channels;
|
|
|
|
if (score > best_score ||
|
|
(count_diff < best_count_diff && score == best_score)) {
|
|
best_score = score;
|
|
best_idx = j;
|
|
best_count_diff = count_diff;
|
|
}
|
|
}
|
|
av_assert0(best_idx >= 0);
|
|
FFSWAP(uint64_t, outlink->incfg.channel_layouts->channel_layouts[0],
|
|
outlink->incfg.channel_layouts->channel_layouts[best_idx]);
|
|
}
|
|
|
|
}
|
|
|
|
static void swap_channel_layouts(AVFilterGraph *graph)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < graph->nb_filters; i++)
|
|
swap_channel_layouts_on_filter(graph->filters[i]);
|
|
}
|
|
|
|
static void swap_sample_fmts_on_filter(AVFilterContext *filter)
|
|
{
|
|
AVFilterLink *link = NULL;
|
|
int format, bps;
|
|
int i, j;
|
|
|
|
for (i = 0; i < filter->nb_inputs; i++) {
|
|
link = filter->inputs[i];
|
|
|
|
if (link->type == AVMEDIA_TYPE_AUDIO &&
|
|
link->outcfg.formats->nb_formats == 1)
|
|
break;
|
|
}
|
|
if (i == filter->nb_inputs)
|
|
return;
|
|
|
|
format = link->outcfg.formats->formats[0];
|
|
bps = av_get_bytes_per_sample(format);
|
|
|
|
for (i = 0; i < filter->nb_outputs; i++) {
|
|
AVFilterLink *outlink = filter->outputs[i];
|
|
int best_idx = -1, best_score = INT_MIN;
|
|
|
|
if (outlink->type != AVMEDIA_TYPE_AUDIO ||
|
|
outlink->incfg.formats->nb_formats < 2)
|
|
continue;
|
|
|
|
for (j = 0; j < outlink->incfg.formats->nb_formats; j++) {
|
|
int out_format = outlink->incfg.formats->formats[j];
|
|
int out_bps = av_get_bytes_per_sample(out_format);
|
|
int score;
|
|
|
|
if (av_get_packed_sample_fmt(out_format) == format ||
|
|
av_get_planar_sample_fmt(out_format) == format) {
|
|
best_idx = j;
|
|
break;
|
|
}
|
|
|
|
/* for s32 and float prefer double to prevent loss of information */
|
|
if (bps == 4 && out_bps == 8) {
|
|
best_idx = j;
|
|
break;
|
|
}
|
|
|
|
/* prefer closest higher or equal bps */
|
|
score = -abs(out_bps - bps);
|
|
if (out_bps >= bps)
|
|
score += INT_MAX/2;
|
|
|
|
if (score > best_score) {
|
|
best_score = score;
|
|
best_idx = j;
|
|
}
|
|
}
|
|
av_assert0(best_idx >= 0);
|
|
FFSWAP(int, outlink->incfg.formats->formats[0],
|
|
outlink->incfg.formats->formats[best_idx]);
|
|
}
|
|
}
|
|
|
|
static void swap_sample_fmts(AVFilterGraph *graph)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < graph->nb_filters; i++)
|
|
swap_sample_fmts_on_filter(graph->filters[i]);
|
|
|
|
}
|
|
|
|
static int pick_formats(AVFilterGraph *graph)
|
|
{
|
|
int i, j, ret;
|
|
int change;
|
|
|
|
do{
|
|
change = 0;
|
|
for (i = 0; i < graph->nb_filters; i++) {
|
|
AVFilterContext *filter = graph->filters[i];
|
|
if (filter->nb_inputs){
|
|
for (j = 0; j < filter->nb_inputs; j++){
|
|
if (filter->inputs[j]->incfg.formats && filter->inputs[j]->incfg.formats->nb_formats == 1) {
|
|
if ((ret = pick_format(filter->inputs[j], NULL)) < 0)
|
|
return ret;
|
|
change = 1;
|
|
}
|
|
}
|
|
}
|
|
if (filter->nb_outputs){
|
|
for (j = 0; j < filter->nb_outputs; j++){
|
|
if (filter->outputs[j]->incfg.formats && filter->outputs[j]->incfg.formats->nb_formats == 1) {
|
|
if ((ret = pick_format(filter->outputs[j], NULL)) < 0)
|
|
return ret;
|
|
change = 1;
|
|
}
|
|
}
|
|
}
|
|
if (filter->nb_inputs && filter->nb_outputs && filter->inputs[0]->format>=0) {
|
|
for (j = 0; j < filter->nb_outputs; j++) {
|
|
if (filter->outputs[j]->format<0) {
|
|
if ((ret = pick_format(filter->outputs[j], filter->inputs[0])) < 0)
|
|
return ret;
|
|
change = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}while(change);
|
|
|
|
for (i = 0; i < graph->nb_filters; i++) {
|
|
AVFilterContext *filter = graph->filters[i];
|
|
|
|
for (j = 0; j < filter->nb_inputs; j++)
|
|
if ((ret = pick_format(filter->inputs[j], NULL)) < 0)
|
|
return ret;
|
|
for (j = 0; j < filter->nb_outputs; j++)
|
|
if ((ret = pick_format(filter->outputs[j], NULL)) < 0)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Configure the formats of all the links in the graph.
|
|
*/
|
|
static int graph_config_formats(AVFilterGraph *graph, void *log_ctx)
|
|
{
|
|
int ret;
|
|
|
|
/* find supported formats from sub-filters, and merge along links */
|
|
while ((ret = query_formats(graph, log_ctx)) == AVERROR(EAGAIN))
|
|
av_log(graph, AV_LOG_DEBUG, "query_formats not finished\n");
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Once everything is merged, it's possible that we'll still have
|
|
* multiple valid media format choices. We try to minimize the amount
|
|
* of format conversion inside filters */
|
|
if ((ret = reduce_formats(graph)) < 0)
|
|
return ret;
|
|
|
|
/* for audio filters, ensure the best format, sample rate and channel layout
|
|
* is selected */
|
|
swap_sample_fmts(graph);
|
|
swap_samplerates(graph);
|
|
swap_channel_layouts(graph);
|
|
|
|
if ((ret = pick_formats(graph)) < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int graph_config_pointers(AVFilterGraph *graph, void *log_ctx)
|
|
{
|
|
unsigned i, j;
|
|
int sink_links_count = 0, n = 0;
|
|
AVFilterContext *f;
|
|
AVFilterLink **sinks;
|
|
|
|
for (i = 0; i < graph->nb_filters; i++) {
|
|
f = graph->filters[i];
|
|
for (j = 0; j < f->nb_inputs; j++) {
|
|
f->inputs[j]->graph = graph;
|
|
f->inputs[j]->age_index = -1;
|
|
}
|
|
for (j = 0; j < f->nb_outputs; j++) {
|
|
f->outputs[j]->graph = graph;
|
|
f->outputs[j]->age_index= -1;
|
|
}
|
|
if (!f->nb_outputs) {
|
|
if (f->nb_inputs > INT_MAX - sink_links_count)
|
|
return AVERROR(EINVAL);
|
|
sink_links_count += f->nb_inputs;
|
|
}
|
|
}
|
|
sinks = av_calloc(sink_links_count, sizeof(*sinks));
|
|
if (!sinks)
|
|
return AVERROR(ENOMEM);
|
|
for (i = 0; i < graph->nb_filters; i++) {
|
|
f = graph->filters[i];
|
|
if (!f->nb_outputs) {
|
|
for (j = 0; j < f->nb_inputs; j++) {
|
|
sinks[n] = f->inputs[j];
|
|
f->inputs[j]->age_index = n++;
|
|
}
|
|
}
|
|
}
|
|
av_assert0(n == sink_links_count);
|
|
graph->sink_links = sinks;
|
|
graph->sink_links_count = sink_links_count;
|
|
return 0;
|
|
}
|
|
|
|
int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx)
|
|
{
|
|
int ret;
|
|
|
|
if ((ret = graph_check_validity(graphctx, log_ctx)))
|
|
return ret;
|
|
if ((ret = graph_config_formats(graphctx, log_ctx)))
|
|
return ret;
|
|
if ((ret = graph_config_links(graphctx, log_ctx)))
|
|
return ret;
|
|
if ((ret = graph_check_links(graphctx, log_ctx)))
|
|
return ret;
|
|
if ((ret = graph_config_pointers(graphctx, log_ctx)))
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int avfilter_graph_send_command(AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, char *res, int res_len, int flags)
|
|
{
|
|
int i, r = AVERROR(ENOSYS);
|
|
|
|
if (!graph)
|
|
return r;
|
|
|
|
if ((flags & AVFILTER_CMD_FLAG_ONE) && !(flags & AVFILTER_CMD_FLAG_FAST)) {
|
|
r = avfilter_graph_send_command(graph, target, cmd, arg, res, res_len, flags | AVFILTER_CMD_FLAG_FAST);
|
|
if (r != AVERROR(ENOSYS))
|
|
return r;
|
|
}
|
|
|
|
if (res_len && res)
|
|
res[0] = 0;
|
|
|
|
for (i = 0; i < graph->nb_filters; i++) {
|
|
AVFilterContext *filter = graph->filters[i];
|
|
if (!strcmp(target, "all") || (filter->name && !strcmp(target, filter->name)) || !strcmp(target, filter->filter->name)) {
|
|
r = avfilter_process_command(filter, cmd, arg, res, res_len, flags);
|
|
if (r != AVERROR(ENOSYS)) {
|
|
if ((flags & AVFILTER_CMD_FLAG_ONE) || r < 0)
|
|
return r;
|
|
}
|
|
}
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int avfilter_graph_queue_command(AVFilterGraph *graph, const char *target, const char *command, const char *arg, int flags, double ts)
|
|
{
|
|
int i;
|
|
|
|
if(!graph)
|
|
return 0;
|
|
|
|
for (i = 0; i < graph->nb_filters; i++) {
|
|
AVFilterContext *filter = graph->filters[i];
|
|
if(filter && (!strcmp(target, "all") || !strcmp(target, filter->name) || !strcmp(target, filter->filter->name))){
|
|
AVFilterCommand **queue = &filter->command_queue, *next;
|
|
while (*queue && (*queue)->time <= ts)
|
|
queue = &(*queue)->next;
|
|
next = *queue;
|
|
*queue = av_mallocz(sizeof(AVFilterCommand));
|
|
if (!*queue)
|
|
return AVERROR(ENOMEM);
|
|
|
|
(*queue)->command = av_strdup(command);
|
|
(*queue)->arg = av_strdup(arg);
|
|
(*queue)->time = ts;
|
|
(*queue)->flags = flags;
|
|
(*queue)->next = next;
|
|
if(flags & AVFILTER_CMD_FLAG_ONE)
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void heap_bubble_up(AVFilterGraph *graph,
|
|
AVFilterLink *link, int index)
|
|
{
|
|
AVFilterLink **links = graph->sink_links;
|
|
|
|
av_assert0(index >= 0);
|
|
|
|
while (index) {
|
|
int parent = (index - 1) >> 1;
|
|
if (links[parent]->current_pts_us >= link->current_pts_us)
|
|
break;
|
|
links[index] = links[parent];
|
|
links[index]->age_index = index;
|
|
index = parent;
|
|
}
|
|
links[index] = link;
|
|
link->age_index = index;
|
|
}
|
|
|
|
static void heap_bubble_down(AVFilterGraph *graph,
|
|
AVFilterLink *link, int index)
|
|
{
|
|
AVFilterLink **links = graph->sink_links;
|
|
|
|
av_assert0(index >= 0);
|
|
|
|
while (1) {
|
|
int child = 2 * index + 1;
|
|
if (child >= graph->sink_links_count)
|
|
break;
|
|
if (child + 1 < graph->sink_links_count &&
|
|
links[child + 1]->current_pts_us < links[child]->current_pts_us)
|
|
child++;
|
|
if (link->current_pts_us < links[child]->current_pts_us)
|
|
break;
|
|
links[index] = links[child];
|
|
links[index]->age_index = index;
|
|
index = child;
|
|
}
|
|
links[index] = link;
|
|
link->age_index = index;
|
|
}
|
|
|
|
void ff_avfilter_graph_update_heap(AVFilterGraph *graph, AVFilterLink *link)
|
|
{
|
|
heap_bubble_up (graph, link, link->age_index);
|
|
heap_bubble_down(graph, link, link->age_index);
|
|
}
|
|
|
|
int avfilter_graph_request_oldest(AVFilterGraph *graph)
|
|
{
|
|
AVFilterLink *oldest = graph->sink_links[0];
|
|
int64_t frame_count;
|
|
int r;
|
|
|
|
while (graph->sink_links_count) {
|
|
oldest = graph->sink_links[0];
|
|
if (oldest->dst->filter->activate) {
|
|
/* For now, buffersink is the only filter implementing activate. */
|
|
r = av_buffersink_get_frame_flags(oldest->dst, NULL,
|
|
AV_BUFFERSINK_FLAG_PEEK);
|
|
if (r != AVERROR_EOF)
|
|
return r;
|
|
} else {
|
|
r = ff_request_frame(oldest);
|
|
}
|
|
if (r != AVERROR_EOF)
|
|
break;
|
|
av_log(oldest->dst, AV_LOG_DEBUG, "EOF on sink link %s:%s.\n",
|
|
oldest->dst->name,
|
|
oldest->dstpad->name);
|
|
/* EOF: remove the link from the heap */
|
|
if (oldest->age_index < --graph->sink_links_count)
|
|
heap_bubble_down(graph, graph->sink_links[graph->sink_links_count],
|
|
oldest->age_index);
|
|
oldest->age_index = -1;
|
|
}
|
|
if (!graph->sink_links_count)
|
|
return AVERROR_EOF;
|
|
av_assert1(!oldest->dst->filter->activate);
|
|
av_assert1(oldest->age_index >= 0);
|
|
frame_count = oldest->frame_count_out;
|
|
while (frame_count == oldest->frame_count_out) {
|
|
r = ff_filter_graph_run_once(graph);
|
|
if (r == AVERROR(EAGAIN) &&
|
|
!oldest->frame_wanted_out && !oldest->frame_blocked_in &&
|
|
!oldest->status_in)
|
|
ff_request_frame(oldest);
|
|
else if (r < 0)
|
|
return r;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ff_filter_graph_run_once(AVFilterGraph *graph)
|
|
{
|
|
AVFilterContext *filter;
|
|
unsigned i;
|
|
|
|
av_assert0(graph->nb_filters);
|
|
filter = graph->filters[0];
|
|
for (i = 1; i < graph->nb_filters; i++)
|
|
if (graph->filters[i]->ready > filter->ready)
|
|
filter = graph->filters[i];
|
|
if (!filter->ready)
|
|
return AVERROR(EAGAIN);
|
|
return ff_filter_activate(filter);
|
|
}
|