* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <ctype.h>
#include <string.h>
+#include "libavutil/avassert.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/common.h"
+#include "libavutil/log.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,
AVFilterGraph *avfilter_graph_alloc(void)
{
- AVFilterGraph *ret = av_mallocz(sizeof(AVFilterGraph));
+ AVFilterGraph *ret = av_mallocz(sizeof(*ret));
if (!ret)
return NULL;
-#if FF_API_GRAPH_AVCLASS
ret->av_class = &filtergraph_class;
-#endif
return ret;
}
{
if (!*graph)
return;
- for (; (*graph)->filter_count > 0; (*graph)->filter_count--)
- avfilter_free((*graph)->filters[(*graph)->filter_count - 1]);
+ for (; (*graph)->nb_filters > 0; (*graph)->nb_filters--)
+ avfilter_free((*graph)->filters[(*graph)->nb_filters - 1]);
av_freep(&(*graph)->scale_sws_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(AVFilterContext*) * (graph->filter_count+1));
+ sizeof(*filters) * (graph->nb_filters + 1));
if (!filters)
return AVERROR(ENOMEM);
graph->filters = filters;
- graph->filters[graph->filter_count++] = filter;
+ graph->filters[graph->nb_filters++] = filter;
return 0;
}
AVFilterContext *filt;
int i, j;
- for (i = 0; i < graph->filter_count; i++) {
+ for (i = 0; i < graph->nb_filters; i++) {
filt = graph->filters[i];
for (j = 0; j < filt->nb_inputs; j++) {
AVFilterContext *filt;
int i, ret;
- for (i=0; i < graph->filter_count; i++) {
+ for (i = 0; i < graph->nb_filters; i++) {
filt = graph->filters[i];
if (!filt->nb_outputs) {
{
int i;
- for (i = 0; i < graph->filter_count; i++)
+ for (i = 0; i < graph->nb_filters; i++)
if (graph->filters[i]->name && !strcmp(name, graph->filters[i]->name))
return graph->filters[i];
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 (i = 0; i < graph->nb_filters; i++) {
if (graph->filters[i]->filter->query_formats)
graph->filters[i]->filter->query_formats(graph->filters[i]);
else
}
/* go through and merge as many format lists as possible */
- for (i = 0; i < graph->filter_count; i++) {
+ for (i = 0; i < graph->nb_filters; i++) {
AVFilterContext *filter = graph->filters[i];
for (j = 0; j < filter->nb_inputs; j++) {
/* 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++);
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"),
+ if ((ret = avfilter_graph_create_filter(&convert, filter,
inst_name, scale_args, NULL,
graph)) < 0)
return ret;
snprintf(inst_name, sizeof(inst_name), "auto-inserted resampler %d",
resampler_count++);
- if ((ret = avfilter_graph_create_filter(&convert,
- avfilter_get_by_name("resample"),
- inst_name, NULL, NULL, graph)) < 0)
+ scale_args[0] = '\0';
+ if (graph->resample_lavr_opts)
+ snprintf(scale_args, sizeof(scale_args), "%s",
+ graph->resample_lavr_opts);
+ if ((ret = avfilter_graph_create_filter(&convert, filter,
+ inst_name, scale_args,
+ NULL, graph)) < 0)
return ret;
break;
default:
do {
reduced = 0;
- for (i = 0; i < graph->filter_count; i++)
+ for (i = 0; i < graph->nb_filters; i++)
reduced |= reduce_formats_on_filter(graph->filters[i]);
} while (reduced);
}
{
int i;
- for (i = 0; i < graph->filter_count; 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;
- 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 = -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 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;
}
}
+ av_assert0(best_idx >= 0);
FFSWAP(uint64_t, outlink->in_channel_layouts->channel_layouts[0],
outlink->in_channel_layouts->channel_layouts[best_idx]);
}
{
int i;
- for (i = 0; i < graph->filter_count; i++)
+ for (i = 0; i < graph->nb_filters; i++)
swap_channel_layouts_on_filter(graph->filters[i]);
}
for (i = 0; i < filter->nb_outputs; i++) {
AVFilterLink *outlink = filter->outputs[i];
- int best_idx, best_score = INT_MIN;
+ int best_idx = -1, best_score = INT_MIN;
if (outlink->type != AVMEDIA_TYPE_AUDIO ||
outlink->in_formats->format_count < 2)
best_idx = j;
}
}
+ av_assert0(best_idx >= 0);
FFSWAP(int, outlink->in_formats->formats[0],
outlink->in_formats->formats[best_idx]);
}
{
int i;
- for (i = 0; i < graph->filter_count; i++)
+ for (i = 0; i < graph->nb_filters; i++)
swap_sample_fmts_on_filter(graph->filters[i]);
}
{
int i, j, ret;
- for (i = 0; i < graph->filter_count; i++) {
+ for (i = 0; i < graph->nb_filters; i++) {
AVFilterContext *filter = graph->filters[i];
for (j = 0; j < filter->nb_inputs; j++)
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)))
projects / ffmpeg / blobdiff