* 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 "libavcodec/avcodec.h" // avcodec_find_best_pix_fmt2()
#include "avfilter.h"
#include "avfiltergraph.h"
#include "formats.h"
.class_name = "AVFilterGraph",
.item_name = av_default_item_name,
.version = LIBAVUTIL_VERSION_INT,
+ .category = AV_CLASS_CATEGORY_FILTER,
};
AVFilterGraph *avfilter_graph_alloc(void)
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;
+}
+
/**
* Check for the validity of graph.
*
return NULL;
}
+static int filter_query_formats(AVFilterContext *ctx)
+{
+ int ret;
+ 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)
+ return ret;
+
+ 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 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;
+
+ filter_query_formats(filt_ctx);
+
+ if ( ((link = filt_ctx-> inputs[0]) &&
+ !ff_merge_formats(link->in_formats, link->out_formats)) ||
+ ((link = filt_ctx->outputs[0]) &&
+ !ff_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;
+ for (j = 0; j < 2; j++) {
/* ask all the sub-filters for their supported media formats */
for (i = 0; i < graph->filter_count; 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)
- graph->filters[i]->filter->query_formats(graph->filters[i]);
+ ret = filter_query_formats(graph->filters[i]);
else
- ff_default_query_formats(graph->filters[i]);
+ ret = ff_default_query_formats(graph->filters[i]);
+ if (ret < 0)
+ return ret;
+ }
}
/* go through and merge as many format lists as possible */
for (j = 0; j < filter->nb_inputs; 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 &&
+ !ff_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 = ff_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)
return ret;
break;
case AVMEDIA_TYPE_AUDIO:
- if (!(filter = avfilter_get_by_name("resample"))) {
- av_log(log_ctx, AV_LOG_ERROR, "'resample' filter "
+ 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);
}
if ((ret = avfilter_insert_filter(link, convert, 0, 0)) < 0)
return ret;
- convert->filter->query_formats(convert);
+ filter_query_formats(convert);
inlink = convert->inputs[0];
outlink = convert->outputs[0];
if (!ff_merge_formats( inlink->in_formats, inlink->out_formats) ||
"'%s' and the filter '%s'\n", link->src->name, link->dst->name);
return ret;
}
+#endif
}
}
}
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);
+ }
+ 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];
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;
- uint64_t chlayout;
- int i, j;
+ int i, j, k;
for (i = 0; i < filter->nb_inputs; i++) {
link = filter->inputs[i];
if (i == filter->nb_inputs)
return;
- chlayout = link->out_channel_layouts->channel_layouts[0];
-
for (i = 0; i < filter->nb_outputs; i++) {
AVFilterLink *outlink = filter->outputs[i];
- int best_idx, best_score = INT_MIN;
+ int best_idx, 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 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;
+ 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 = 0;
+
+ /* 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;
+ }
+ }
- if (score > best_score) {
+ /* 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;
}
}
FFSWAP(uint64_t, outlink->in_channel_layouts->channel_layouts[0],
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->nb_inputs){
+ for (j = 0; j < filter->nb_inputs; 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->nb_outputs){
+ for (j = 0; j < filter->nb_outputs; 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->nb_inputs && filter->nb_outputs && filter->inputs[0]->format>=0) {
+ for (j = 0; j < filter->nb_outputs; 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->nb_inputs; 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->nb_outputs; j++)
- if ((ret = pick_format(filter->outputs[j])) < 0)
+ if ((ret = pick_format(filter->outputs[j], NULL)) < 0)
return ret;
}
return 0;
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->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->filter_count; 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;
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->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 = 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;
+}
projects / ffmpeg / blobdiff