diff options
Diffstat (limited to 'ffmpeg1/libavfilter/avfiltergraph.c')
| -rw-r--r-- | ffmpeg1/libavfilter/avfiltergraph.c | 1073 |
1 files changed, 0 insertions, 1073 deletions
diff --git a/ffmpeg1/libavfilter/avfiltergraph.c b/ffmpeg1/libavfilter/avfiltergraph.c deleted file mode 100644 index 89cdda3..0000000 --- a/ffmpeg1/libavfilter/avfiltergraph.c +++ /dev/null @@ -1,1073 +0,0 @@ -/* - * filter graphs - * Copyright (c) 2008 Vitor Sessak - * Copyright (c) 2007 Bobby Bingham - * - * This file is part of FFmpeg. - * - * 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. - * - * 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 FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <string.h> - -#include "libavutil/avassert.h" -#include "libavutil/channel_layout.h" -#include "libavutil/opt.h" -#include "libavutil/pixdesc.h" -#include "libavcodec/avcodec.h" // avcodec_find_best_pix_fmt_of_2() -#include "avfilter.h" -#include "avfiltergraph.h" -#include "formats.h" -#include "internal.h" - -#define OFFSET(x) offsetof(AVFilterGraph,x) - -static const AVOption options[]={ -{"scale_sws_opts" , "default scale filter options" , OFFSET(scale_sws_opts) , AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, 0 }, -{"aresample_swr_opts" , "default aresample filter options" , OFFSET(aresample_swr_opts) , AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, 0 }, -{0} -}; - - -static const AVClass filtergraph_class = { - .class_name = "AVFilterGraph", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, - .category = AV_CLASS_CATEGORY_FILTER, -}; - -AVFilterGraph *avfilter_graph_alloc(void) -{ - AVFilterGraph *ret = av_mallocz(sizeof(*ret)); - if (!ret) - return NULL; - ret->av_class = &filtergraph_class; - return ret; -} - -void avfilter_graph_free(AVFilterGraph **graph) -{ - if (!*graph) - return; - for (; (*graph)->nb_filters > 0; (*graph)->nb_filters--) - avfilter_free((*graph)->filters[(*graph)->nb_filters - 1]); - av_freep(&(*graph)->sink_links); - av_freep(&(*graph)->scale_sws_opts); - av_freep(&(*graph)->aresample_swr_opts); - av_freep(&(*graph)->resample_lavr_opts); - av_freep(&(*graph)->filters); - av_freep(graph); -} - -int avfilter_graph_add_filter(AVFilterGraph *graph, AVFilterContext *filter) -{ - AVFilterContext **filters = av_realloc(graph->filters, - sizeof(*filters) * (graph->nb_filters + 1)); - if (!filters) - return AVERROR(ENOMEM); - - graph->filters = filters; - graph->filters[graph->nb_filters++] = filter; - - return 0; -} - -int avfilter_graph_create_filter(AVFilterContext **filt_ctx, AVFilter *filt, - const char *name, const char *args, void *opaque, - AVFilterGraph *graph_ctx) -{ - int ret; - - if ((ret = avfilter_open(filt_ctx, filt, name)) < 0) - goto fail; - if ((ret = avfilter_init_filter(*filt_ctx, args, opaque)) < 0) - goto fail; - if ((ret = avfilter_graph_add_filter(graph_ctx, *filt_ctx)) < 0) - goto fail; - return 0; - -fail: - if (*filt_ctx) - avfilter_free(*filt_ctx); - *filt_ctx = NULL; - return ret; -} - -void avfilter_graph_set_auto_convert(AVFilterGraph *graph, unsigned flags) -{ - graph->disable_auto_convert = flags; -} - -/** - * Check for the validity of graph. - * - * A graph is considered valid if all its input and output pads are - * connected. - * - * @return 0 in case of success, a negative value otherwise - */ -static int graph_check_validity(AVFilterGraph *graph, AVClass *log_ctx) -{ - AVFilterContext *filt; - int i, j; - - for (i = 0; i < graph->nb_filters; i++) { - const AVFilterPad *pad; - filt = graph->filters[i]; - - for (j = 0; j < filt->nb_inputs; j++) { - if (!filt->inputs[j] || !filt->inputs[j]->src) { - pad = &filt->input_pads[j]; - av_log(log_ctx, AV_LOG_ERROR, - "Input pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any source\n", - pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name); - return AVERROR(EINVAL); - } - } - - for (j = 0; j < filt->nb_outputs; j++) { - if (!filt->outputs[j] || !filt->outputs[j]->dst) { - pad = &filt->output_pads[j]; - av_log(log_ctx, AV_LOG_ERROR, - "Output pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any destination\n", - pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name); - return AVERROR(EINVAL); - } - } - } - - return 0; -} - -/** - * Configure all the links of graphctx. - * - * @return 0 in case of success, a negative value otherwise - */ -static int graph_config_links(AVFilterGraph *graph, AVClass *log_ctx) -{ - AVFilterContext *filt; - int i, ret; - - for (i = 0; i < graph->nb_filters; i++) { - filt = graph->filters[i]; - - if (!filt->nb_outputs) { - if ((ret = avfilter_config_links(filt))) - return ret; - } - } - - return 0; -} - -AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name) -{ - int i; - - for (i = 0; i < graph->nb_filters; i++) - if (graph->filters[i]->name && !strcmp(name, graph->filters[i]->name)) - return graph->filters[i]; - - return NULL; -} - -static void sanitize_channel_layouts(void *log, AVFilterChannelLayouts *l) -{ - if (!l) - return; - if (l->nb_channel_layouts) { - if (l->all_layouts || l->all_counts) - av_log(log, AV_LOG_WARNING, "All layouts set on non-empty list\n"); - l->all_layouts = l->all_counts = 0; - } else { - if (l->all_counts && !l->all_layouts) - av_log(log, AV_LOG_WARNING, "All counts without all layouts\n"); - l->all_layouts = 1; - } -} - -static int filter_query_formats(AVFilterContext *ctx) -{ - int ret, i; - AVFilterFormats *formats; - AVFilterChannelLayouts *chlayouts; - AVFilterFormats *samplerates; - enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type : - ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type : - AVMEDIA_TYPE_VIDEO; - - if ((ret = ctx->filter->query_formats(ctx)) < 0) { - av_log(ctx, AV_LOG_ERROR, "Query format failed for '%s': %s\n", - ctx->name, av_err2str(ret)); - return ret; - } - - for (i = 0; i < ctx->nb_inputs; i++) - sanitize_channel_layouts(ctx, ctx->inputs[i]->out_channel_layouts); - for (i = 0; i < ctx->nb_outputs; i++) - sanitize_channel_layouts(ctx, ctx->outputs[i]->in_channel_layouts); - - formats = ff_all_formats(type); - if (!formats) - return AVERROR(ENOMEM); - ff_set_common_formats(ctx, formats); - if (type == AVMEDIA_TYPE_AUDIO) { - samplerates = ff_all_samplerates(); - if (!samplerates) - return AVERROR(ENOMEM); - ff_set_common_samplerates(ctx, samplerates); - chlayouts = ff_all_channel_layouts(); - if (!chlayouts) - return AVERROR(ENOMEM); - ff_set_common_channel_layouts(ctx, chlayouts); - } - return 0; -} - -static int query_formats(AVFilterGraph *graph, AVClass *log_ctx) -{ - int i, j, ret; - int scaler_count = 0, resampler_count = 0; - - for (j = 0; j < 2; j++) { - /* ask all the sub-filters for their supported media formats */ - for (i = 0; i < graph->nb_filters; i++) { - /* Call query_formats on sources first. - This is a temporary workaround for amerge, - until format renegociation is implemented. */ - if (!graph->filters[i]->nb_inputs == j) - continue; - if (graph->filters[i]->filter->query_formats) - ret = filter_query_formats(graph->filters[i]); - else - ret = ff_default_query_formats(graph->filters[i]); - if (ret < 0) - return ret; - } - } - - /* go through and merge as many format lists as possible */ - for (i = 0; i < graph->nb_filters; i++) { - AVFilterContext *filter = graph->filters[i]; - - for (j = 0; j < filter->nb_inputs; j++) { - AVFilterLink *link = filter->inputs[j]; - int convert_needed = 0; - - if (!link) - continue; - - if (link->in_formats != link->out_formats && - !ff_merge_formats(link->in_formats, link->out_formats, - link->type)) - convert_needed = 1; - if (link->type == AVMEDIA_TYPE_AUDIO) { - if (link->in_channel_layouts != link->out_channel_layouts && - !ff_merge_channel_layouts(link->in_channel_layouts, - link->out_channel_layouts)) - convert_needed = 1; - if (link->in_samplerates != link->out_samplerates && - !ff_merge_samplerates(link->in_samplerates, - link->out_samplerates)) - convert_needed = 1; - } - - if (convert_needed) { - AVFilterContext *convert; - AVFilter *filter; - AVFilterLink *inlink, *outlink; - char scale_args[256]; - char inst_name[30]; - - /* couldn't merge format lists. auto-insert conversion filter */ - switch (link->type) { - case AVMEDIA_TYPE_VIDEO: - if (!(filter = avfilter_get_by_name("scale"))) { - av_log(log_ctx, AV_LOG_ERROR, "'scale' filter " - "not present, cannot convert pixel formats.\n"); - return AVERROR(EINVAL); - } - - snprintf(inst_name, sizeof(inst_name), "auto-inserted scaler %d", - scaler_count++); - if (graph->scale_sws_opts) - snprintf(scale_args, sizeof(scale_args), "0:0:%s", graph->scale_sws_opts); - else - snprintf(scale_args, sizeof(scale_args), "0:0"); - - if ((ret = avfilter_graph_create_filter(&convert, filter, - inst_name, scale_args, NULL, - graph)) < 0) - return ret; - break; - case AVMEDIA_TYPE_AUDIO: - if (!(filter = avfilter_get_by_name("aresample"))) { - av_log(log_ctx, AV_LOG_ERROR, "'aresample' filter " - "not present, cannot convert audio formats.\n"); - return AVERROR(EINVAL); - } - - snprintf(inst_name, sizeof(inst_name), "auto-inserted resampler %d", - resampler_count++); - scale_args[0] = '\0'; - if (graph->aresample_swr_opts) - snprintf(scale_args, sizeof(scale_args), "%s", - graph->aresample_swr_opts); - if ((ret = avfilter_graph_create_filter(&convert, filter, - inst_name, graph->aresample_swr_opts, - NULL, graph)) < 0) - return ret; - break; - default: - return AVERROR(EINVAL); - } - - if ((ret = avfilter_insert_filter(link, convert, 0, 0)) < 0) - return ret; - - filter_query_formats(convert); - inlink = convert->inputs[0]; - outlink = convert->outputs[0]; - if (!ff_merge_formats( inlink->in_formats, inlink->out_formats, inlink->type) || - !ff_merge_formats(outlink->in_formats, outlink->out_formats, outlink->type)) - ret |= AVERROR(ENOSYS); - if (inlink->type == AVMEDIA_TYPE_AUDIO && - (!ff_merge_samplerates(inlink->in_samplerates, - inlink->out_samplerates) || - !ff_merge_channel_layouts(inlink->in_channel_layouts, - inlink->out_channel_layouts))) - ret |= AVERROR(ENOSYS); - if (outlink->type == AVMEDIA_TYPE_AUDIO && - (!ff_merge_samplerates(outlink->in_samplerates, - outlink->out_samplerates) || - !ff_merge_channel_layouts(outlink->in_channel_layouts, - outlink->out_channel_layouts))) - ret |= AVERROR(ENOSYS); - - if (ret < 0) { - 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 ret; - } - } - } - } - - return 0; -} - -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_desc_get(ref->format)->nb_components % 2 == 0; - enum AVPixelFormat best= AV_PIX_FMT_NONE; - int i; - for (i=0; i<link->in_formats->format_count; i++) { - enum AVPixelFormat p = link->in_formats->formats[i]; - best= avcodec_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->in_formats->format_count, - av_get_pix_fmt_name(ref->format), has_alpha); - link->in_formats->formats[0] = best; - } - } - - link->in_formats->format_count = 1; - link->format = link->in_formats->formats[0]; - - if (link->type == AVMEDIA_TYPE_AUDIO) { - if (!link->in_samplerates->format_count) { - 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->in_samplerates->format_count = 1; - link->sample_rate = link->in_samplerates->formats[0]; - - if (link->in_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); - return AVERROR(EINVAL); - } - link->in_channel_layouts->nb_channel_layouts = 1; - link->channel_layout = link->in_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->in_formats); - ff_formats_unref(&link->out_formats); - ff_formats_unref(&link->in_samplerates); - ff_formats_unref(&link->out_samplerates); - ff_channel_layouts_unref(&link->in_channel_layouts); - ff_channel_layouts_unref(&link->out_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->out_ ## list || link->out_ ## list->nb != 1) \ - continue; \ - fmt = link->out_ ## 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->in_ ## list->nb == 1) \ - continue; \ - fmts = out_link->in_ ## list; \ - \ - if (!out_link->in_ ## list->nb) { \ - add_format(&out_link->in_ ##list, fmt); \ - break; \ - } \ - \ - for (k = 0; k < out_link->in_ ## 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, - format_count, ff_add_format); - REDUCE_FORMATS(int, AVFilterFormats, samplerates, formats, - format_count, ff_add_format); - - /* reduce channel layouts */ - for (i = 0; i < filter->nb_inputs; i++) { - AVFilterLink *inlink = filter->inputs[i]; - uint64_t fmt; - - if (!inlink->out_channel_layouts || - inlink->out_channel_layouts->nb_channel_layouts != 1) - continue; - fmt = inlink->out_channel_layouts->channel_layouts[0]; - - for (j = 0; j < filter->nb_outputs; j++) { - AVFilterLink *outlink = filter->outputs[j]; - AVFilterChannelLayouts *fmts; - - fmts = outlink->in_channel_layouts; - if (inlink->type != outlink->type || fmts->nb_channel_layouts == 1) - continue; - - if (fmts->all_layouts) { - /* Turn the infinite list into a singleton */ - fmts->all_layouts = fmts->all_counts = 0; - ff_add_channel_layout(&outlink->in_channel_layouts, fmt); - break; - } - - for (k = 0; k < outlink->in_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 void reduce_formats(AVFilterGraph *graph) -{ - int i, reduced; - - do { - reduced = 0; - - for (i = 0; i < graph->nb_filters; i++) - reduced |= reduce_formats_on_filter(graph->filters[i]); - } while (reduced); -} - -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->out_samplerates->format_count == 1) - break; - } - if (i == filter->nb_inputs) - return; - - sample_rate = link->out_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->in_samplerates->format_count < 2) - continue; - - for (j = 0; j < outlink->in_samplerates->format_count; j++) { - int diff = abs(sample_rate - outlink->in_samplerates->formats[j]); - - if (diff < best_diff) { - best_diff = diff; - best_idx = j; - } - } - FFSWAP(int, outlink->in_samplerates->formats[0], - outlink->in_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->out_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->in_channel_layouts->nb_channel_layouts < 2) - continue; - - for (j = 0; j < outlink->in_channel_layouts->nb_channel_layouts; j++) { - uint64_t in_chlayout = link->out_channel_layouts->channel_layouts[0]; - uint64_t out_chlayout = outlink->in_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->in_channel_layouts->channel_layouts[0], - outlink->in_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->out_formats->format_count == 1) - break; - } - if (i == filter->nb_inputs) - return; - - format = link->out_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->in_formats->format_count < 2) - continue; - - for (j = 0; j < outlink->in_formats->format_count; j++) { - int out_format = outlink->in_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->in_formats->formats[0], - outlink->in_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]->in_formats && filter->inputs[j]->in_formats->format_count == 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]->in_formats && filter->outputs[j]->in_formats->format_count == 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, AVClass *log_ctx) -{ - int ret; - - /* find supported formats from sub-filters, and merge along links */ - if ((ret = query_formats(graph, log_ctx)) < 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 */ - reduce_formats(graph); - - /* 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 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->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; -} - -static int graph_insert_fifos(AVFilterGraph *graph, AVClass *log_ctx) -{ - AVFilterContext *f; - int i, j, ret; - int fifo_count = 0; - - for (i = 0; i < graph->nb_filters; i++) { - f = graph->filters[i]; - - for (j = 0; j < f->nb_inputs; j++) { - AVFilterLink *link = f->inputs[j]; - AVFilterContext *fifo_ctx; - AVFilter *fifo; - char name[32]; - - if (!link->dstpad->needs_fifo) - continue; - - fifo = f->inputs[j]->type == AVMEDIA_TYPE_VIDEO ? - avfilter_get_by_name("fifo") : - avfilter_get_by_name("afifo"); - - snprintf(name, sizeof(name), "auto-inserted fifo %d", fifo_count++); - - ret = avfilter_graph_create_filter(&fifo_ctx, fifo, name, NULL, - NULL, graph); - if (ret < 0) - return ret; - - ret = avfilter_insert_filter(link, fifo_ctx, 0, 0); - if (ret < 0) - return ret; - } - } - - 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_insert_fifos(graphctx, log_ctx)) < 0) - return ret; - if ((ret = graph_config_formats(graphctx, log_ctx))) - return ret; - if ((ret = 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->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)); - (*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; - - 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 = ff_request_frame(oldest); - if (r != AVERROR_EOF) - return r; - av_log(oldest->dst, AV_LOG_DEBUG, "EOF on sink link %s:%s.\n", - oldest->dst ? oldest->dst->name : "unknown", - oldest->dstpad ? oldest->dstpad->name : "unknown"); - /* 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; -} |