avfilter: Constify all AVFilters

[ffmpeg] / libavfilter / af_adelay.c

diff --git a/libavfilter/af_adelay.c b/libavfilter/af_adelay.c
index eb97039566d7169867e0eb90b51046fd4d4962b2..c6450cb2b9bf0ca8eb5e66c782c533a64d51d0b0 100644 (file)
--- a/libavfilter/af_adelay.c
+++ b/libavfilter/af_adelay.c
@@ -28,14 +28,15 @@
 #include "internal.h"
 
 typedef struct ChanDelay {
-    int delay;
-    unsigned delay_index;
-    unsigned index;
+    int64_t delay;
+    size_t delay_index;
+    size_t index;
     uint8_t *samples;
 } ChanDelay;
 
 typedef struct AudioDelayContext {
     const AVClass *class;
+    int all;
     char *delays;
     ChanDelay *chandelay;
     int nb_delays;
@@ -54,6 +55,7 @@ typedef struct AudioDelayContext {
 
 static const AVOption adelay_options[] = {
     { "delays", "set list of delays for each channel", OFFSET(delays), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, A },
+    { "all",    "use last available delay for remained channels", OFFSET(all), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, A },
     { NULL }
 };
 
@@ -150,10 +152,13 @@ static int config_input(AVFilterLink *inlink)
 
         p = NULL;
 
-        ret = av_sscanf(arg, "%d%c", &d->delay, &type);
+        ret = av_sscanf(arg, "%"SCNd64"%c", &d->delay, &type);
         if (ret != 2 || type != 'S') {
             div = type == 's' ? 1.0 : 1000.0;
-            av_sscanf(arg, "%f", &delay);
+            if (av_sscanf(arg, "%f", &delay) != 1) {
+                av_log(ctx, AV_LOG_ERROR, "Invalid syntax for delay.\n");
+                return AVERROR(EINVAL);
+            }
             d->delay = delay * inlink->sample_rate / div;
         }
 
@@ -163,6 +168,11 @@ static int config_input(AVFilterLink *inlink)
         }
     }
 
+    if (s->all && i) {
+        for (int j = i; j < s->nb_delays; j++)
+            s->chandelay[j].delay = s->chandelay[i-1].delay;
+    }
+
     s->padding = s->chandelay[0].delay;
     for (i = 1; i < s->nb_delays; i++) {
         ChanDelay *d = &s->chandelay[i];
@@ -184,6 +194,11 @@ static int config_input(AVFilterLink *inlink)
         if (!d->delay)
             continue;
 
+        if (d->delay > SIZE_MAX) {
+            av_log(ctx, AV_LOG_ERROR, "Requested delay is too big.\n");
+            return AVERROR(EINVAL);
+        }
+
         d->samples = av_malloc_array(d->delay, s->block_align);
         if (!d->samples)
             return AVERROR(ENOMEM);
@@ -335,7 +350,7 @@ static const AVFilterPad adelay_outputs[] = {
     { NULL }
 };
 
-AVFilter ff_af_adelay = {
+const AVFilter ff_af_adelay = {
     .name          = "adelay",
     .description   = NULL_IF_CONFIG_SMALL("Delay one or more audio channels."),
     .query_formats = query_formats,