diff options
Diffstat (limited to 'libavfilter/avfiltergraph.c')
| -rw-r--r-- | libavfilter/avfiltergraph.c | 324 |
1 files changed, 315 insertions, 9 deletions
diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c index b2db5dcf97..8d2312e05d 100644 --- a/libavfilter/avfiltergraph.c +++ b/libavfilter/avfiltergraph.c @@ -3,26 +3,29 @@ * Copyright (c) 2008 Vitor Sessak * Copyright (c) 2007 Bobby Bingham * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <ctype.h> #include <string.h> +#include "libavutil/audioconvert.h" +#include "libavutil/avassert.h" +#include "libavutil/pixdesc.h" #include "avfilter.h" #include "avfiltergraph.h" #include "formats.h" @@ -54,6 +57,7 @@ void avfilter_graph_free(AVFilterGraph **graph) return; for (; (*graph)->filter_count > 0; (*graph)->filter_count--) avfilter_free((*graph)->filters[(*graph)->filter_count - 1]); + av_freep(&(*graph)->sink_links); av_freep(&(*graph)->scale_sws_opts); av_freep(&(*graph)->filters); av_freep(graph); @@ -93,6 +97,11 @@ fail: return ret; } +void avfilter_graph_set_auto_convert(AVFilterGraph *graph, unsigned flags) +{ + graph->disable_auto_convert = flags; +} + int ff_avfilter_graph_check_validity(AVFilterGraph *graph, AVClass *log_ctx) { AVFilterContext *filt; @@ -151,9 +160,66 @@ AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name) return NULL; } +static int insert_conv_filter(AVFilterGraph *graph, AVFilterLink *link, + const char *filt_name, const char *filt_args) +{ + static int auto_count = 0, ret; + char inst_name[32]; + AVFilterContext *filt_ctx; + + if (graph->disable_auto_convert) { + av_log(NULL, AV_LOG_ERROR, + "The filters '%s' and '%s' do not have a common format " + "and automatic conversion is disabled.\n", + link->src->name, link->dst->name); + return AVERROR(EINVAL); + } + + snprintf(inst_name, sizeof(inst_name), "auto-inserted %s %d", + filt_name, auto_count++); + + if ((ret = avfilter_graph_create_filter(&filt_ctx, + avfilter_get_by_name(filt_name), + inst_name, filt_args, NULL, graph)) < 0) + return ret; + if ((ret = avfilter_insert_filter(link, filt_ctx, 0, 0)) < 0) + return ret; + + filt_ctx->filter->query_formats(filt_ctx); + + if ( ((link = filt_ctx-> inputs[0]) && + !avfilter_merge_formats(link->in_formats, link->out_formats)) || + ((link = filt_ctx->outputs[0]) && + !avfilter_merge_formats(link->in_formats, link->out_formats)) + ) { + av_log(NULL, 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(EINVAL); + } + + if (link->type == AVMEDIA_TYPE_AUDIO && + (((link = filt_ctx-> inputs[0]) && + !ff_merge_channel_layouts(link->in_channel_layouts, link->out_channel_layouts)) || + ((link = filt_ctx->outputs[0]) && + !ff_merge_channel_layouts(link->in_channel_layouts, link->out_channel_layouts))) + ) { + av_log(NULL, AV_LOG_ERROR, + "Impossible to convert between the channel layouts formats supported by the filter " + "'%s' and the filter '%s'\n", link->src->name, link->dst->name); + return AVERROR(EINVAL); + } + + return 0; +} + static int query_formats(AVFilterGraph *graph, AVClass *log_ctx) { int i, j, ret; + char filt_args[128]; + AVFilterFormats *formats; + AVFilterChannelLayouts *chlayouts; + AVFilterFormats *samplerates; int scaler_count = 0, resampler_count = 0; /* ask all the sub-filters for their supported media formats */ @@ -170,6 +236,36 @@ static int query_formats(AVFilterGraph *graph, AVClass *log_ctx) for (j = 0; j < filter->input_count; j++) { AVFilterLink *link = filter->inputs[j]; +#if 0 + if (!link) continue; + + if (!link->in_formats || !link->out_formats) + return AVERROR(EINVAL); + + if (link->type == AVMEDIA_TYPE_VIDEO && + !avfilter_merge_formats(link->in_formats, link->out_formats)) { + + /* couldn't merge format lists, auto-insert scale filter */ + snprintf(filt_args, sizeof(filt_args), "0:0:%s", + graph->scale_sws_opts); + if (ret = insert_conv_filter(graph, link, "scale", filt_args)) + return ret; + } + else if (link->type == AVMEDIA_TYPE_AUDIO) { + if (!link->in_channel_layouts || !link->out_channel_layouts) + return AVERROR(EINVAL); + + /* Merge all three list before checking: that way, in all + * three categories, aconvert will use a common format + * whenever possible. */ + formats = avfilter_merge_formats(link->in_formats, link->out_formats); + chlayouts = ff_merge_channel_layouts(link->in_channel_layouts , link->out_channel_layouts); + samplerates = ff_merge_samplerates (link->in_samplerates, link->out_samplerates); + + if (!formats || !chlayouts || !samplerates) + if (ret = insert_conv_filter(graph, link, "aresample", NULL)) + return ret; +#else int convert_needed = 0; if (!link) @@ -210,7 +306,7 @@ static int query_formats(AVFilterGraph *graph, AVClass *log_ctx) return ret; break; case AVMEDIA_TYPE_AUDIO: - if (!(filter = avfilter_get_by_name("resample"))) { + if (!(filter = avfilter_get_by_name("aresample"))) { av_log(log_ctx, AV_LOG_ERROR, "'resample' filter " "not present, cannot convert audio formats.\n"); return AVERROR(EINVAL); @@ -219,7 +315,7 @@ static int query_formats(AVFilterGraph *graph, AVClass *log_ctx) snprintf(inst_name, sizeof(inst_name), "auto-inserted resampler %d", resampler_count++); if ((ret = avfilter_graph_create_filter(&convert, - avfilter_get_by_name("resample"), + avfilter_get_by_name("aresample"), inst_name, NULL, NULL, graph)) < 0) return ret; break; @@ -255,6 +351,7 @@ static int query_formats(AVFilterGraph *graph, AVClass *log_ctx) "'%s' and the filter '%s'\n", link->src->name, link->dst->name); return ret; } +#endif } } } @@ -262,11 +359,24 @@ static int query_formats(AVFilterGraph *graph, AVClass *log_ctx) return 0; } -static int pick_format(AVFilterLink *link) +static int pick_format(AVFilterLink *link, AVFilterLink *ref) { if (!link || !link->in_formats) return 0; + if (link->type == AVMEDIA_TYPE_VIDEO) { + if(ref && ref->type == AVMEDIA_TYPE_VIDEO){ + int has_alpha= av_pix_fmt_descriptors[ref->format].nb_components % 2 == 0; + enum PixelFormat best= PIX_FMT_NONE; + int i; + for (i=0; i<link->in_formats->format_count; i++) { + enum PixelFormat p = link->in_formats->formats[i]; + best= avcodec_find_best_pix_fmt2(best, p, ref->format, has_alpha, NULL); + } + link->in_formats->formats[0] = best; + } + } + link->in_formats->format_count = 1; link->format = link->in_formats->formats[0]; @@ -532,15 +642,47 @@ static void swap_sample_fmts(AVFilterGraph *graph) static int pick_formats(AVFilterGraph *graph) { int i, j, ret; + int change; + + do{ + change = 0; + for (i = 0; i < graph->filter_count; i++) { + AVFilterContext *filter = graph->filters[i]; + if (filter->input_count){ + for (j = 0; j < filter->input_count; j++){ + if(filter->inputs[j]->in_formats && filter->inputs[j]->in_formats->format_count == 1) { + pick_format(filter->inputs[j], NULL); + change = 1; + } + } + } + if (filter->output_count){ + for (j = 0; j < filter->output_count; j++){ + if(filter->outputs[j]->in_formats && filter->outputs[j]->in_formats->format_count == 1) { + pick_format(filter->outputs[j], NULL); + change = 1; + } + } + } + if (filter->input_count && filter->output_count && filter->inputs[0]->format>=0) { + for (j = 0; j < filter->output_count; j++) { + if(filter->outputs[j]->format<0) { + pick_format(filter->outputs[j], filter->inputs[0]); + change = 1; + } + } + } + } + }while(change); for (i = 0; i < graph->filter_count; i++) { AVFilterContext *filter = graph->filters[i]; for (j = 0; j < filter->input_count; j++) - if ((ret = pick_format(filter->inputs[j])) < 0) + if ((ret = pick_format(filter->inputs[j], NULL)) < 0) return ret; for (j = 0; j < filter->output_count; j++) - if ((ret = pick_format(filter->outputs[j])) < 0) + if ((ret = pick_format(filter->outputs[j], NULL)) < 0) return ret; } return 0; @@ -571,6 +713,48 @@ int ff_avfilter_graph_config_formats(AVFilterGraph *graph, AVClass *log_ctx) return 0; } +static int ff_avfilter_graph_config_pointers(AVFilterGraph *graph, + AVClass *log_ctx) +{ + unsigned i, j; + int sink_links_count = 0, n = 0; + AVFilterContext *f; + AVFilterLink **sinks; + + for (i = 0; i < graph->filter_count; i++) { + f = graph->filters[i]; + for (j = 0; j < f->input_count; j++) { + f->inputs[j]->graph = graph; + f->inputs[j]->age_index = -1; + } + for (j = 0; j < f->output_count; j++) { + f->outputs[j]->graph = graph; + f->outputs[j]->age_index= -1; + } + if (!f->output_count) { + if (f->input_count > INT_MAX - sink_links_count) + return AVERROR(EINVAL); + sink_links_count += f->input_count; + } + } + sinks = av_calloc(sink_links_count, sizeof(*sinks)); + if (!sinks) + return AVERROR(ENOMEM); + for (i = 0; i < graph->filter_count; i++) { + f = graph->filters[i]; + if (!f->output_count) { + for (j = 0; j < f->input_count; 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; @@ -581,6 +765,128 @@ int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx) return ret; if ((ret = ff_avfilter_graph_config_links(graphctx, log_ctx))) return ret; + if ((ret = ff_avfilter_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->filter_count; 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->filter_count; i++) { + AVFilterContext *filter = graph->filters[i]; + if(filter && (!strcmp(target, "all") || !strcmp(target, filter->name) || !strcmp(target, filter->filter->name))){ + AVFilterCommand **que = &filter->command_queue, *next; + while(*que && (*que)->time <= ts) + que = &(*que)->next; + next= *que; + *que= av_mallocz(sizeof(AVFilterCommand)); + (*que)->command = av_strdup(command); + (*que)->arg = av_strdup(arg); + (*que)->time = ts; + (*que)->flags = flags; + (*que)->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; + + while (index) { + int parent = (index - 1) >> 1; + if (links[parent]->current_pts >= link->current_pts) + 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; + + 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 < links[child]->current_pts) + child++; + if (link->current_pts < links[child]->current_pts) + 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) +{ + while (graph->sink_links_count) { + AVFilterLink *oldest = graph->sink_links[0]; + int r = avfilter_request_frame(oldest); + if (r != AVERROR_EOF) + return r; + /* 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; + } + return AVERROR_EOF; +} |