#include <string.h>
#include "libavutil/audioconvert.h"
+#include "libavutil/avassert.h"
+#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "avfiltergraph.h"
+#include "formats.h"
#include "internal.h"
+#include "libavutil/audioconvert.h"
+#include "libavutil/log.h"
+
+static const AVClass filtergraph_class = {
+ .class_name = "AVFilterGraph",
+ .item_name = av_default_item_name,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
AVFilterGraph *avfilter_graph_alloc(void)
{
- return av_mallocz(sizeof(AVFilterGraph));
+ AVFilterGraph *ret = av_mallocz(sizeof(AVFilterGraph));
+ if (!ret)
+ return NULL;
+#if FF_API_GRAPH_AVCLASS
+ ret->av_class = &filtergraph_class;
+#endif
+ return ret;
}
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);
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;
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 (link->type == AVMEDIA_TYPE_AUDIO &&
(((link = filt_ctx-> inputs[0]) &&
- (!avfilter_merge_formats(link->in_chlayouts, link->out_chlayouts) ||
- !avfilter_merge_formats(link->in_packing, link->out_packing))) ||
+ !ff_merge_channel_layouts(link->in_channel_layouts, link->out_channel_layouts)) ||
((link = filt_ctx->outputs[0]) &&
- (!avfilter_merge_formats(link->in_chlayouts, link->out_chlayouts) ||
- !avfilter_merge_formats(link->in_packing, link->out_packing))))
+ !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/packing formats supported by the filter "
+ "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);
}
{
int i, j, ret;
char filt_args[128];
- AVFilterFormats *formats, *chlayouts, *packing;
+ AVFilterFormats *formats;
+ AVFilterChannelLayouts *chlayouts;
+ AVFilterFormats *samplerates;
+ int scaler_count = 0, resampler_count = 0;
/* ask all the sub-filters for their supported media formats */
for (i = 0; i < graph->filter_count; i++) {
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 ret;
}
else if (link->type == AVMEDIA_TYPE_AUDIO) {
- if (!link->in_chlayouts || !link->out_chlayouts ||
- !link->in_packing || !link->out_packing)
+ 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 = avfilter_merge_formats(link->in_chlayouts, link->out_chlayouts);
- packing = avfilter_merge_formats(link->in_packing, link->out_packing);
- if (!formats || !chlayouts || !packing)
- if (ret = insert_conv_filter(graph, link, "aconvert", NULL))
+ 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)
+ continue;
+
+ if (link->in_formats != link->out_formats &&
+ !avfilter_merge_formats(link->in_formats,
+ link->out_formats))
+ 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:
+ snprintf(inst_name, sizeof(inst_name), "auto-inserted scaler %d",
+ scaler_count++);
+ snprintf(scale_args, sizeof(scale_args), "0:0:%s", graph->scale_sws_opts);
+ if ((ret = avfilter_graph_create_filter(&convert,
+ avfilter_get_by_name("scale"),
+ 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, "'resample' filter "
+ "not present, cannot convert audio formats.\n");
+ return AVERROR(EINVAL);
+ }
+
+ snprintf(inst_name, sizeof(inst_name), "auto-inserted resampler %d",
+ resampler_count++);
+ if ((ret = avfilter_graph_create_filter(&convert,
+ avfilter_get_by_name("aresample"),
+ inst_name, NULL, NULL, graph)) < 0)
+ return ret;
+ break;
+ default:
+ return AVERROR(EINVAL);
+ }
+
+ if ((ret = avfilter_insert_filter(link, convert, 0, 0)) < 0)
+ return ret;
+
+ convert->filter->query_formats(convert);
+ inlink = convert->inputs[0];
+ outlink = convert->outputs[0];
+ if (!avfilter_merge_formats( inlink->in_formats, inlink->out_formats) ||
+ !avfilter_merge_formats(outlink->in_formats, outlink->out_formats))
+ 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;
+ }
+#endif
}
}
}
return 0;
}
-static void pick_format(AVFilterLink *link)
+static int pick_format(AVFilterLink *link, AVFilterLink *ref)
{
if (!link || !link->in_formats)
- return;
+ 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];
+
+ 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->nb_channel_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];
+ }
+
avfilter_formats_unref(&link->in_formats);
avfilter_formats_unref(&link->out_formats);
+ avfilter_formats_unref(&link->in_samplerates);
+ avfilter_formats_unref(&link->out_samplerates);
+ ff_channel_layouts_unref(&link->in_channel_layouts);
+ ff_channel_layouts_unref(&link->out_channel_layouts);
- if (link->type == AVMEDIA_TYPE_AUDIO) {
- link->in_chlayouts->format_count = 1;
- link->channel_layout = link->in_chlayouts->formats[0];
- avfilter_formats_unref(&link->in_chlayouts);
- avfilter_formats_unref(&link->out_chlayouts);
-
- link->in_packing->format_count = 1;
- link->planar = link->in_packing->formats[0] == AVFILTER_PLANAR;
- avfilter_formats_unref(&link->in_packing);
- avfilter_formats_unref(&link->out_packing);
+ return 0;
+}
+
+#define REDUCE_FORMATS(fmt_type, list_type, list, var, nb, add_format) \
+do { \
+ for (i = 0; i < filter->input_count; 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->output_count; 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, avfilter_add_format);
+ REDUCE_FORMATS(int, AVFilterFormats, samplerates, formats,
+ format_count, avfilter_add_format);
+ REDUCE_FORMATS(uint64_t, AVFilterChannelLayouts, channel_layouts,
+ channel_layouts, nb_channel_layouts, ff_add_channel_layout);
+
+ return ret;
+}
+
+static void reduce_formats(AVFilterGraph *graph)
+{
+ int i, reduced;
+
+ do {
+ reduced = 0;
+
+ for (i = 0; i < graph->filter_count; 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->input_count; i++) {
+ link = filter->inputs[i];
+
+ if (link->type == AVMEDIA_TYPE_AUDIO &&
+ link->out_samplerates->format_count == 1)
+ break;
}
+ if (i == filter->input_count)
+ return;
+
+ sample_rate = link->out_samplerates->formats[0];
+
+ for (i = 0; i < filter->output_count; 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->filter_count; i++)
+ swap_samplerates_on_filter(graph->filters[i]);
}
-static void pick_formats(AVFilterGraph *graph)
+static void swap_channel_layouts_on_filter(AVFilterContext *filter)
{
+ AVFilterLink *link = NULL;
+ uint64_t chlayout;
int i, j;
+ for (i = 0; i < filter->input_count; i++) {
+ link = filter->inputs[i];
+
+ if (link->type == AVMEDIA_TYPE_AUDIO &&
+ link->out_channel_layouts->nb_channel_layouts == 1)
+ break;
+ }
+ if (i == filter->input_count)
+ return;
+
+ chlayout = link->out_channel_layouts->channel_layouts[0];
+
+ for (i = 0; i < filter->output_count; i++) {
+ AVFilterLink *outlink = filter->outputs[i];
+ int best_idx, best_score = INT_MIN;
+
+ 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 out_chlayout = outlink->in_channel_layouts->channel_layouts[j];
+ int matched_channels = av_get_channel_layout_nb_channels(chlayout &
+ out_chlayout);
+ int extra_channels = av_get_channel_layout_nb_channels(out_chlayout &
+ (~chlayout));
+ int score = matched_channels - extra_channels;
+
+ if (score > best_score) {
+ best_score = score;
+ best_idx = j;
+ }
+ }
+ 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->filter_count; i++)
+ swap_channel_layouts_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->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++)
- pick_format(filter->inputs[j]);
+ if ((ret = pick_format(filter->inputs[j], NULL)) < 0)
+ return ret;
for (j = 0; j < filter->output_count; j++)
- pick_format(filter->outputs[j]);
+ if ((ret = pick_format(filter->outputs[j], NULL)) < 0)
+ return ret;
}
+ return 0;
}
int ff_avfilter_graph_config_formats(AVFilterGraph *graph, AVClass *log_ctx)
return ret;
/* Once everything is merged, it's possible that we'll still have
- * multiple valid media format choices. We pick the first one. */
- pick_formats(graph);
+ * 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 sample rate and channel layout
+ * is selected */
+ 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->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;
}
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;
}
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;
+}
projects / ffmpeg / blobdiff