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lavfi/af_pan: support unknown layouts on input. 

Fix trac ticket #2899.
This commit is contained in:
Nicolas George 2013-10-25 16:12:06 +02:00
parent 4e9adc9b73
commit 7b0a587393
1 changed files with 8 additions and 8 deletions
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16
libavfilter/af_pan.c
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@ -46,7 +46,6 @@ typedef struct PanContext {
double gain[MAX_CHANNELS][MAX_CHANNELS];
int64_t need_renorm;
int need_renumber;
int nb_input_channels;
int nb_output_channels;
int pure_gains;
@ -239,7 +238,7 @@ static int query_formats(AVFilterContext *ctx)
ff_set_common_samplerates(ctx, formats);
// inlink supports any channel layout
layouts = ff_all_channel_layouts();
layouts = ff_all_channel_counts();
ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
// outlink supports only requested output channel layout
@ -259,7 +258,6 @@ static int config_props(AVFilterLink *link)
int i, j, k, r;
double t;
pan->nb_input_channels = av_get_channel_layout_nb_channels(link->channel_layout);
if (pan->need_renumber) {
// input channels were given by their name: renumber them
for (i = j = 0; i < MAX_CHANNELS; i++) {
@ -273,7 +271,7 @@ static int config_props(AVFilterLink *link)
// sanity check; can't be done in query_formats since the inlink
// channel layout is unknown at that time
if (pan->nb_input_channels > SWR_CH_MAX ||
if (link->channels > SWR_CH_MAX ||
pan->nb_output_channels > SWR_CH_MAX) {
av_log(ctx, AV_LOG_ERROR,
"libswresample support a maximum of %d channels. "
@ -288,6 +286,8 @@ static int config_props(AVFilterLink *link)
0, ctx);
if (!pan->swr)
return AVERROR(ENOMEM);
if (!link->channel_layout)
av_opt_set_int(pan->swr, "ich", link->channels, 0);
if (!pan->out_channel_layout)
av_opt_set_int(pan->swr, "och", pan->nb_output_channels, 0);
@ -297,7 +297,7 @@ static int config_props(AVFilterLink *link)
// get channel map from the pure gains
for (i = 0; i < pan->nb_output_channels; i++) {
int ch_id = -1;
for (j = 0; j < pan->nb_input_channels; j++) {
for (j = 0; j < link->channels; j++) {
if (pan->gain[i][j]) {
ch_id = j;
break;
@ -315,7 +315,7 @@ static int config_props(AVFilterLink *link)
if (!((pan->need_renorm >> i) & 1))
continue;
t = 0;
for (j = 0; j < pan->nb_input_channels; j++)
for (j = 0; j < link->channels; j++)
t += pan->gain[i][j];
if (t > -1E-5 && t < 1E-5) {
// t is almost 0 but not exactly, this is probably a mistake
@ -324,7 +324,7 @@ static int config_props(AVFilterLink *link)
"Degenerate coefficients while renormalizing\n");
continue;
}
for (j = 0; j < pan->nb_input_channels; j++)
for (j = 0; j < link->channels; j++)
pan->gain[i][j] /= t;
}
av_opt_set_int(pan->swr, "icl", link->channel_layout, 0);
@ -339,7 +339,7 @@ static int config_props(AVFilterLink *link)
// summary
for (i = 0; i < pan->nb_output_channels; i++) {
cur = buf;
for (j = 0; j < pan->nb_input_channels; j++) {
for (j = 0; j < link->channels; j++) {
r = snprintf(cur, buf + sizeof(buf) - cur, "%s%.3g i%d",
j ? " + " : "", pan->gain[i][j], j);
cur += FFMIN(buf + sizeof(buf) - cur, r);