avfilter/all: propagate errors of functions from avfilter/formats

Many of the functions from avfilter/formats can return errors, usually AVERROR(ENOMEM).
This propagates the return values.

All of these were found by using av_warn_unused_result, demonstrating its utility.

Tested with FATE. I am least sure of the changes to avfilter/filtergraph,
since I don't know what/how reduce_format is intended to behave and how it should
react to errors.

Fixes: CID 1325680, 1325679, 1325678.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Previous version Reviewed-by: Nicolas George <george@nsup.org>
Previous version Reviewed-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

libavfilter/aeval.c

@@ -350,36 +350,34 @@ static int aeval_query_formats(AVFilterContext *ctx)
     static const enum AVSampleFormat sample_fmts[] = {
         AV_SAMPLE_FMT_DBLP, AV_SAMPLE_FMT_NONE
     };
+    int ret;
 
     // inlink supports any channel layout
     layouts = ff_all_channel_counts();
-    ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     if (eval->same_chlayout) {
         layouts = ff_all_channel_counts();
-        if (!layouts)
-            return AVERROR(ENOMEM);
-            ff_set_common_channel_layouts(ctx, layouts);
+        if ((ret = ff_set_common_channel_layouts(ctx, layouts)) < 0)
+            return ret;
     } else {
         // outlink supports only requested output channel layout
         layouts = NULL;
-        ff_add_channel_layout(&layouts,
+        if ((ret = ff_add_channel_layout(&layouts,
                               eval->out_channel_layout ? eval->out_channel_layout :
-                              FF_COUNT2LAYOUT(eval->nb_channels));
-        ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts);
+                              FF_COUNT2LAYOUT(eval->nb_channels))) < 0)
+            return ret;
+        if ((ret = ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts)) < 0)
+            return ret;
     }
 
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_set_common_formats(ctx, formats);
+    if ((ret = ff_set_common_formats(ctx, formats)) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_set_common_samplerates(ctx, formats);
-
-    return 0;
+    return ff_set_common_samplerates(ctx, formats);
 }
 
 static int aeval_config_output(AVFilterLink *outlink)

libavfilter/af_aformat.c

@@ -57,9 +57,10 @@ static const AVOption aformat_options[] = {
 
 AVFILTER_DEFINE_CLASS(aformat);
 
-#define PARSE_FORMATS(str, type, list, add_to_list, get_fmt, none, desc)    \
+#define PARSE_FORMATS(str, type, list, add_to_list, unref_fn, get_fmt, none, desc)    \
 do {                                                                        \
     char *next, *cur = str, sep;                                            \
+    int ret;                                                                \
                                                                             \
     if (str && strchr(str, ',')) {                                          \
         av_log(ctx, AV_LOG_WARNING, "This syntax is deprecated, use '|' to "\
@@ -78,7 +79,10 @@ do {                                                                        \
             av_log(ctx, AV_LOG_ERROR, "Error parsing " desc ": %s.\n", cur);\
             return AVERROR(EINVAL);                                         \
         }                                                                   \
-        add_to_list(&list, fmt);                                            \
+        if ((ret = add_to_list(&list, fmt)) < 0) {                          \
+            unref_fn(&list);                                                \
+            return ret;                                                     \
+        }                                                                   \
                                                                             \
         cur = next;                                                         \
     }                                                                       \
@@ -95,11 +99,11 @@ static av_cold int init(AVFilterContext *ctx)
     AFormatContext *s = ctx->priv;
 
     PARSE_FORMATS(s->formats_str, enum AVSampleFormat, s->formats,
-                  ff_add_format, av_get_sample_fmt, AV_SAMPLE_FMT_NONE, "sample format");
-    PARSE_FORMATS(s->sample_rates_str, int, s->sample_rates, ff_add_format,
+                  ff_add_format, ff_formats_unref, av_get_sample_fmt, AV_SAMPLE_FMT_NONE, "sample format");
+    PARSE_FORMATS(s->sample_rates_str, int, s->sample_rates, ff_add_format, ff_formats_unref,
                   get_sample_rate, 0, "sample rate");
     PARSE_FORMATS(s->channel_layouts_str, uint64_t, s->channel_layouts,
-                  ff_add_channel_layout, av_get_channel_layout, 0,
+                  ff_add_channel_layout, ff_channel_layouts_unref, av_get_channel_layout, 0,
                   "channel layout");
 
     return 0;

libavfilter/af_agate.c

@@ -77,7 +77,8 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterChannelLayouts *layouts;
     int ret;
 
-    ff_add_format(&formats, AV_SAMPLE_FMT_DBL);
+    if ((ret = ff_add_format(&formats, AV_SAMPLE_FMT_DBL)) < 0)
+        return ret;
     ret = ff_set_common_formats(ctx, formats);
     if (ret < 0)
         return ret;

libavfilter/af_amerge.c

@@ -78,7 +78,7 @@ static int query_formats(AVFilterContext *ctx)
     int64_t inlayout[SWR_CH_MAX], outlayout = 0;
     AVFilterFormats *formats;
     AVFilterChannelLayouts *layouts;
-    int i, overlap = 0, nb_ch = 0;
+    int i, ret, overlap = 0, nb_ch = 0;
 
     for (i = 0; i < s->nb_inputs; i++) {
         if (!ctx->inputs[i]->in_channel_layouts ||
@@ -125,17 +125,22 @@ static int query_formats(AVFilterContext *ctx)
                     *(route[i]++) = out_ch_number++;
     }
     formats = ff_make_format_list(ff_packed_sample_fmts_array);
-    ff_set_common_formats(ctx, formats);
+    if ((ret = ff_set_common_formats(ctx, formats)) < 0)
+        return ret;
     for (i = 0; i < s->nb_inputs; i++) {
         layouts = NULL;
-        ff_add_channel_layout(&layouts, inlayout[i]);
-        ff_channel_layouts_ref(layouts, &ctx->inputs[i]->out_channel_layouts);
+        if ((ret = ff_add_channel_layout(&layouts, inlayout[i])) < 0)
+            return ret;
+        if ((ret = ff_channel_layouts_ref(layouts, &ctx->inputs[i]->out_channel_layouts)) < 0)
+            return ret;
     }
     layouts = NULL;
-    ff_add_channel_layout(&layouts, outlayout);
-    ff_channel_layouts_ref(layouts, &ctx->outputs[0]->in_channel_layouts);
-    ff_set_common_samplerates(ctx, ff_all_samplerates());
-    return 0;
+    if ((ret = ff_add_channel_layout(&layouts, outlayout)) < 0)
+        return ret;
+    if ((ret = ff_channel_layouts_ref(layouts, &ctx->outputs[0]->in_channel_layouts)) < 0)
+        return ret;
+
+    return ff_set_common_samplerates(ctx, ff_all_samplerates());
 }
 
 static int config_output(AVFilterLink *outlink)

libavfilter/af_amix.c

@@ -537,12 +537,13 @@ static int query_formats(AVFilterContext *ctx)
     int ret;
 
     layouts = ff_all_channel_layouts();
-
     if (!layouts)
         return AVERROR(ENOMEM);
 
-    ff_add_format(&formats, AV_SAMPLE_FMT_FLT);
-    ff_add_format(&formats, AV_SAMPLE_FMT_FLTP);
+    if ((ret = ff_add_format(&formats, AV_SAMPLE_FMT_FLT)) < 0)
+        return ret;
+    if ((ret = ff_add_format(&formats, AV_SAMPLE_FMT_FLTP)) < 0)
+        return ret;
     ret = ff_set_common_formats(ctx, formats);
     if (ret < 0)
         return ret;

libavfilter/af_aresample.c

@@ -88,25 +88,23 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterFormats        *in_formats, *out_formats;
     AVFilterFormats        *in_samplerates, *out_samplerates;
     AVFilterChannelLayouts *in_layouts, *out_layouts;
+    int ret;
 
     av_opt_get_sample_fmt(aresample->swr, "osf", 0, &out_format);
     av_opt_get_int(aresample->swr, "osr", 0, &out_rate);
     av_opt_get_int(aresample->swr, "ocl", 0, &out_layout);
 
     in_formats      = ff_all_formats(AVMEDIA_TYPE_AUDIO);
-    if (!in_formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref  (in_formats,      &inlink->out_formats);
+    if ((ret = ff_formats_ref(in_formats, &inlink->out_formats)) < 0)
+        return ret;
 
     in_samplerates  = ff_all_samplerates();
-    if (!in_samplerates)
-        return AVERROR(ENOMEM);
-    ff_formats_ref  (in_samplerates,  &inlink->out_samplerates);
+    if ((ret = ff_formats_ref(in_samplerates, &inlink->out_samplerates)) < 0)
+        return ret;
 
     in_layouts      = ff_all_channel_counts();
-    if (!in_layouts)
-         return AVERROR(ENOMEM);
-    ff_channel_layouts_ref(in_layouts,      &inlink->out_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(in_layouts, &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     if(out_rate > 0) {
         int ratelist[] = { out_rate, -1 };
@@ -114,28 +112,25 @@ static int query_formats(AVFilterContext *ctx)
     } else {
         out_samplerates = ff_all_samplerates();
     }
-    if (!out_samplerates) {
-        av_log(ctx, AV_LOG_ERROR, "Cannot allocate output samplerates.\n");
-        return AVERROR(ENOMEM);
-    }
 
-    ff_formats_ref(out_samplerates, &outlink->in_samplerates);
+    if ((ret = ff_formats_ref(out_samplerates, &outlink->in_samplerates)) < 0)
+        return ret;
 
     if(out_format != AV_SAMPLE_FMT_NONE) {
         int formatlist[] = { out_format, -1 };
         out_formats = ff_make_format_list(formatlist);
     } else
         out_formats = ff_all_formats(AVMEDIA_TYPE_AUDIO);
-    ff_formats_ref(out_formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(out_formats, &outlink->in_formats)) < 0)
+        return ret;
 
     if(out_layout) {
         int64_t layout_list[] = { out_layout, -1 };
         out_layouts = avfilter_make_format64_list(layout_list);
     } else
         out_layouts = ff_all_channel_counts();
-    ff_channel_layouts_ref(out_layouts, &outlink->in_channel_layouts);
 
-    return 0;
+    return ff_channel_layouts_ref(out_layouts, &outlink->in_channel_layouts);
 }
 
 

libavfilter/af_astreamsync.c

@@ -89,20 +89,23 @@ static av_cold int init(AVFilterContext *ctx)
 
 static int query_formats(AVFilterContext *ctx)
 {
-    int i;
+    int i, ret;
     AVFilterFormats *formats, *rates;
     AVFilterChannelLayouts *layouts;
 
     for (i = 0; i < 2; i++) {
         formats = ctx->inputs[i]->in_formats;
-        ff_formats_ref(formats, &ctx->inputs[i]->out_formats);
-        ff_formats_ref(formats, &ctx->outputs[i]->in_formats);
+        if ((ret = ff_formats_ref(formats, &ctx->inputs[i]->out_formats)) < 0 ||
+            (ret = ff_formats_ref(formats, &ctx->outputs[i]->in_formats)) < 0)
+            return ret;
         rates = ff_all_samplerates();
-        ff_formats_ref(rates, &ctx->inputs[i]->out_samplerates);
-        ff_formats_ref(rates, &ctx->outputs[i]->in_samplerates);
+        if ((ret = ff_formats_ref(rates, &ctx->inputs[i]->out_samplerates)) < 0 ||
+            (ret = ff_formats_ref(rates, &ctx->outputs[i]->in_samplerates)) < 0)
+            return ret;
         layouts = ctx->inputs[i]->in_channel_layouts;
-        ff_channel_layouts_ref(layouts, &ctx->inputs[i]->out_channel_layouts);
-        ff_channel_layouts_ref(layouts, &ctx->outputs[i]->in_channel_layouts);
+        if ((ret = ff_channel_layouts_ref(layouts, &ctx->inputs[i]->out_channel_layouts)) < 0 ||
+            (ret = ff_channel_layouts_ref(layouts, &ctx->outputs[i]->in_channel_layouts)) < 0)
+            return ret;
     }
     return 0;
 }

libavfilter/af_channelmap.c

@@ -289,18 +289,15 @@ static int channelmap_query_formats(AVFilterContext *ctx)
     ChannelMapContext *s = ctx->priv;
     AVFilterChannelLayouts *layouts;
     AVFilterChannelLayouts *channel_layouts = NULL;
+    int ret;
 
     layouts = ff_all_channel_layouts();
-    if (!layouts)
-        return AVERROR(ENOMEM);
-
-    ff_add_channel_layout(&channel_layouts, s->output_layout);
-
-    ff_set_common_formats(ctx, ff_planar_sample_fmts());
-    ff_set_common_samplerates(ctx, ff_all_samplerates());
-
-    ff_channel_layouts_ref(layouts, &ctx->inputs[0]->out_channel_layouts);
-    ff_channel_layouts_ref(channel_layouts,          &ctx->outputs[0]->in_channel_layouts);
+    if ((ret = ff_add_channel_layout     (&channel_layouts, s->output_layout                    )) < 0 ||
+        (ret = ff_set_common_formats     (ctx             , ff_planar_sample_fmts()             )) < 0 ||
+        (ret = ff_set_common_samplerates (ctx             , ff_all_samplerates()                )) < 0 ||
+        (ret = ff_channel_layouts_ref    (layouts         , &ctx->inputs[0]->out_channel_layouts)) < 0 ||
+        (ret = ff_channel_layouts_ref    (channel_layouts , &ctx->outputs[0]->in_channel_layouts)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/af_channelsplit.c

@@ -82,20 +82,23 @@ static int query_formats(AVFilterContext *ctx)
 {
     ChannelSplitContext *s = ctx->priv;
     AVFilterChannelLayouts *in_layouts = NULL;
-    int i;
+    int i, ret;
 
-    ff_set_common_formats    (ctx, ff_planar_sample_fmts());
-    ff_set_common_samplerates(ctx, ff_all_samplerates());
+    if ((ret = ff_set_common_formats(ctx, ff_planar_sample_fmts())) < 0 ||
+        (ret = ff_set_common_samplerates(ctx, ff_all_samplerates())) < 0)
+        return ret;
 
-    ff_add_channel_layout(&in_layouts, s->channel_layout);
-    ff_channel_layouts_ref(in_layouts, &ctx->inputs[0]->out_channel_layouts);
+    if ((ret = ff_add_channel_layout(&in_layouts, s->channel_layout)) < 0 ||
+        (ret = ff_channel_layouts_ref(in_layouts, &ctx->inputs[0]->out_channel_layouts)) < 0)
+        return ret;
 
     for (i = 0; i < ctx->nb_outputs; i++) {
         AVFilterChannelLayouts *out_layouts = NULL;
         uint64_t channel = av_channel_layout_extract_channel(s->channel_layout, i);
 
-        ff_add_channel_layout(&out_layouts, channel);
-        ff_channel_layouts_ref(out_layouts, &ctx->outputs[i]->in_channel_layouts);
+        if ((ret = ff_add_channel_layout(&out_layouts, channel)) < 0 ||
+            (ret = ff_channel_layouts_ref(out_layouts, &ctx->outputs[i]->in_channel_layouts)) < 0)
+            return ret;
     }
 
     return 0;

libavfilter/af_earwax.c

@@ -78,15 +78,17 @@ typedef struct {
 static int query_formats(AVFilterContext *ctx)
 {
     static const int sample_rates[] = { 44100, -1 };
+    int ret;
 
     AVFilterFormats *formats = NULL;
     AVFilterChannelLayouts *layout = NULL;
 
-    ff_add_format(&formats, AV_SAMPLE_FMT_S16);
-    ff_set_common_formats(ctx, formats);
-    ff_add_channel_layout(&layout, AV_CH_LAYOUT_STEREO);
-    ff_set_common_channel_layouts(ctx, layout);
-    ff_set_common_samplerates(ctx, ff_make_format_list(sample_rates));
+    if ((ret = ff_add_format                 (&formats, AV_SAMPLE_FMT_S16                 )) < 0 ||
+        (ret = ff_set_common_formats         (ctx     , formats                           )) < 0 ||
+        (ret = ff_add_channel_layout         (&layout , AV_CH_LAYOUT_STEREO               )) < 0 ||
+        (ret = ff_set_common_channel_layouts (ctx     , layout                            )) < 0 ||
+        (ret = ff_set_common_samplerates     (ctx     , ff_make_format_list(sample_rates) )) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/af_extrastereo.c

@@ -45,15 +45,15 @@ static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
     AVFilterChannelLayouts *layout = NULL;
+    int ret;
 
-    ff_add_format(&formats, AV_SAMPLE_FMT_FLT);
-    ff_set_common_formats(ctx, formats);
-    ff_add_channel_layout(&layout, AV_CH_LAYOUT_STEREO);
-    ff_set_common_channel_layouts(ctx, layout);
+    if ((ret = ff_add_format                 (&formats, AV_SAMPLE_FMT_FLT  )) < 0 ||
+        (ret = ff_set_common_formats         (ctx     , formats            )) < 0 ||
+        (ret = ff_add_channel_layout         (&layout , AV_CH_LAYOUT_STEREO)) < 0 ||
+        (ret = ff_set_common_channel_layouts (ctx     , layout             )) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
     return ff_set_common_samplerates(ctx, formats);
 }
 

libavfilter/af_join.c

@@ -245,20 +245,21 @@ static int join_query_formats(AVFilterContext *ctx)
 {
     JoinContext *s = ctx->priv;
     AVFilterChannelLayouts *layouts = NULL;
-    int i;
+    int i, ret;
 
-    ff_add_channel_layout(&layouts, s->channel_layout);
-    ff_channel_layouts_ref(layouts, &ctx->outputs[0]->in_channel_layouts);
+    if ((ret = ff_add_channel_layout(&layouts, s->channel_layout)) < 0 ||
+        (ret = ff_channel_layouts_ref(layouts, &ctx->outputs[0]->in_channel_layouts)) < 0)
+        return ret;
 
     for (i = 0; i < ctx->nb_inputs; i++) {
         layouts = ff_all_channel_layouts();
-        if (!layouts)
-            return AVERROR(ENOMEM);
-        ff_channel_layouts_ref(layouts, &ctx->inputs[i]->out_channel_layouts);
+        if ((ret = ff_channel_layouts_ref(layouts, &ctx->inputs[i]->out_channel_layouts)) < 0)
+            return ret;
     }
 
-    ff_set_common_formats    (ctx, ff_planar_sample_fmts());
-    ff_set_common_samplerates(ctx, ff_all_samplerates());
+    if ((ret = ff_set_common_formats(ctx, ff_planar_sample_fmts())) < 0 ||
+        (ret = ff_set_common_samplerates(ctx, ff_all_samplerates())) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/af_pan.c

@@ -227,27 +227,29 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterLink *outlink = ctx->outputs[0];
     AVFilterFormats *formats = NULL;
     AVFilterChannelLayouts *layouts;
+    int ret;
 
     pan->pure_gains = are_gains_pure(pan);
     /* libswr supports any sample and packing formats */
-    ff_set_common_formats(ctx, ff_all_formats(AVMEDIA_TYPE_AUDIO));
+    if ((ret = ff_set_common_formats(ctx, ff_all_formats(AVMEDIA_TYPE_AUDIO))) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_set_common_samplerates(ctx, formats);
+    if ((ret = ff_set_common_samplerates(ctx, formats)) < 0)
+        return ret;
 
     // inlink supports any channel layout
     layouts = ff_all_channel_counts();
-    ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     // outlink supports only requested output channel layout
     layouts = NULL;
-    ff_add_channel_layout(&layouts,
+    if ((ret = ff_add_channel_layout(&layouts,
                           pan->out_channel_layout ? pan->out_channel_layout :
-                          FF_COUNT2LAYOUT(pan->nb_output_channels));
-    ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts);
-    return 0;
+                          FF_COUNT2LAYOUT(pan->nb_output_channels))) < 0)
+        return ret;
+    return ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts);
 }
 
 static int config_props(AVFilterLink *link)

libavfilter/af_replaygain.c

@@ -323,19 +323,21 @@ static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
     AVFilterChannelLayouts *layout = NULL;
-    int i;
+    int i, ret;
 
-    ff_add_format(&formats, AV_SAMPLE_FMT_FLT);
-    ff_set_common_formats(ctx, formats);
-    ff_add_channel_layout(&layout, AV_CH_LAYOUT_STEREO);
-    ff_set_common_channel_layouts(ctx, layout);
+    if ((ret = ff_add_format                 (&formats, AV_SAMPLE_FMT_FLT  )) < 0 ||
+        (ret = ff_set_common_formats         (ctx     , formats            )) < 0 ||
+        (ret = ff_add_channel_layout         (&layout , AV_CH_LAYOUT_STEREO)) < 0 ||
+        (ret = ff_set_common_channel_layouts (ctx     , layout             )) < 0)
+        return ret;
 
     formats = NULL;
-    for (i = 0; i < FF_ARRAY_ELEMS(freqinfos); i++)
-        ff_add_format(&formats, freqinfos[i].sample_rate);
-    ff_set_common_samplerates(ctx, formats);
+    for (i = 0; i < FF_ARRAY_ELEMS(freqinfos); i++) {
+        if ((ret = ff_add_format(&formats, freqinfos[i].sample_rate)) < 0)
+            return ret;
+    }
 
-    return 0;
+    return ff_set_common_samplerates(ctx, formats);
 }
 
 static int config_input(AVFilterLink *inlink)

libavfilter/af_resample.c

@@ -90,22 +90,25 @@ static int query_formats(AVFilterContext *ctx)
 {
     AVFilterLink *inlink  = ctx->inputs[0];
     AVFilterLink *outlink = ctx->outputs[0];
+    AVFilterFormats *in_formats, *out_formats, *in_samplerates, *out_samplerates;
+    AVFilterChannelLayouts *in_layouts, *out_layouts;
+    int ret;
 
-    AVFilterFormats        *in_formats      = ff_all_formats(AVMEDIA_TYPE_AUDIO);
-    AVFilterFormats        *out_formats     = ff_all_formats(AVMEDIA_TYPE_AUDIO);
-    AVFilterFormats        *in_samplerates  = ff_all_samplerates();
-    AVFilterFormats        *out_samplerates = ff_all_samplerates();
-    AVFilterChannelLayouts *in_layouts      = ff_all_channel_layouts();
-    AVFilterChannelLayouts *out_layouts     = ff_all_channel_layouts();
-
-    ff_formats_ref(in_formats,  &inlink->out_formats);
-    ff_formats_ref(out_formats, &outlink->in_formats);
-
-    ff_formats_ref(in_samplerates,  &inlink->out_samplerates);
-    ff_formats_ref(out_samplerates, &outlink->in_samplerates);
+    if (!(in_formats      = ff_all_formats         (AVMEDIA_TYPE_AUDIO)) ||
+        !(out_formats     = ff_all_formats         (AVMEDIA_TYPE_AUDIO)) ||
+        !(in_samplerates  = ff_all_samplerates     (                  )) ||
+        !(out_samplerates = ff_all_samplerates     (                  )) ||
+        !(in_layouts      = ff_all_channel_layouts (                  )) ||
+        !(out_layouts     = ff_all_channel_layouts (                  )))
+        return AVERROR(ENOMEM);
 
-    ff_channel_layouts_ref(in_layouts,  &inlink->out_channel_layouts);
-    ff_channel_layouts_ref(out_layouts, &outlink->in_channel_layouts);
+    if ((ret = ff_formats_ref         (in_formats,      &inlink->out_formats        )) < 0 ||
+        (ret = ff_formats_ref         (out_formats,     &outlink->in_formats        )) < 0 ||
+        (ret = ff_formats_ref         (in_samplerates,  &inlink->out_samplerates    )) < 0 ||
+        (ret = ff_formats_ref         (out_samplerates, &outlink->in_samplerates    )) < 0 ||
+        (ret = ff_channel_layouts_ref (in_layouts,      &inlink->out_channel_layouts)) < 0 ||
+        (ret = ff_channel_layouts_ref (out_layouts,     &outlink->in_channel_layouts)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/af_sidechaincompress.c

@@ -229,28 +229,21 @@ static int query_formats(AVFilterContext *ctx)
             return AVERROR(EAGAIN);
     }
 
-    ff_add_channel_layout(&layouts, ctx->inputs[0]->in_channel_layouts->channel_layouts[0]);
-    if (!layouts)
-        return AVERROR(ENOMEM);
-    ff_channel_layouts_ref(layouts, &ctx->outputs[0]->in_channel_layouts);
+    if ((ret = ff_add_channel_layout(&layouts, ctx->inputs[0]->in_channel_layouts->channel_layouts[0])) < 0 ||
+        (ret = ff_channel_layouts_ref(layouts, &ctx->outputs[0]->in_channel_layouts)) < 0)
+        return ret;
 
     for (i = 0; i < 2; i++) {
         layouts = ff_all_channel_counts();
-        if (!layouts)
-            return AVERROR(ENOMEM);
-        ff_channel_layouts_ref(layouts, &ctx->inputs[i]->out_channel_layouts);
+        if ((ret = ff_channel_layouts_ref(layouts, &ctx->inputs[i]->out_channel_layouts)) < 0)
+            return ret;
     }
 
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ret = ff_set_common_formats(ctx, formats);
-    if (ret < 0)
+    if ((ret = ff_set_common_formats(ctx, formats)) < 0)
         return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
     return ff_set_common_samplerates(ctx, formats);
 }
 

libavfilter/af_stereotools.c

@@ -92,16 +92,15 @@ static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
     AVFilterChannelLayouts *layout = NULL;
+    int ret;
 
-    ff_add_format(&formats, AV_SAMPLE_FMT_DBL);
-    ff_set_common_formats(ctx, formats);
-    ff_add_channel_layout(&layout, AV_CH_LAYOUT_STEREO);
-    ff_set_common_channel_layouts(ctx, layout);
+    if ((ret = ff_add_format                 (&formats, AV_SAMPLE_FMT_DBL  )) < 0 ||
+        (ret = ff_set_common_formats         (ctx     , formats            )) < 0 ||
+        (ret = ff_add_channel_layout         (&layout , AV_CH_LAYOUT_STEREO)) < 0 ||
+        (ret = ff_set_common_channel_layouts (ctx     , layout             )) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-
     return ff_set_common_samplerates(ctx, formats);
 }
 

libavfilter/af_stereowiden.c

@@ -55,15 +55,15 @@ static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
     AVFilterChannelLayouts *layout = NULL;
+    int ret;
 
-    ff_add_format(&formats, AV_SAMPLE_FMT_FLT);
-    ff_set_common_formats(ctx, formats);
-    ff_add_channel_layout(&layout, AV_CH_LAYOUT_STEREO);
-    ff_set_common_channel_layouts(ctx, layout);
+    if ((ret = ff_add_format                 (&formats, AV_SAMPLE_FMT_FLT  )) < 0 ||
+        (ret = ff_set_common_formats         (ctx     , formats            )) < 0 ||
+        (ret = ff_add_channel_layout         (&layout , AV_CH_LAYOUT_STEREO)) < 0 ||
+        (ret = ff_set_common_channel_layouts (ctx     , layout             )) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
     return ff_set_common_samplerates(ctx, formats);
 }
 

libavfilter/asrc_anullsrc.c

@@ -80,10 +80,12 @@ static int query_formats(AVFilterContext *ctx)
     ANullContext *null = ctx->priv;
     int64_t chlayouts[] = { null->channel_layout, -1 };
     int sample_rates[] = { null->sample_rate, -1 };
+    int ret;
 
-    ff_set_common_formats        (ctx, ff_all_formats(AVMEDIA_TYPE_AUDIO));
-    ff_set_common_channel_layouts(ctx, avfilter_make_format64_list(chlayouts));
-    ff_set_common_samplerates    (ctx, ff_make_format_list(sample_rates));
+    if ((ret = ff_set_common_formats         (ctx, ff_all_formats              (AVMEDIA_TYPE_AUDIO))) < 0 ||
+        (ret = ff_set_common_channel_layouts (ctx, avfilter_make_format64_list (chlayouts         ))) < 0 ||
+        (ret = ff_set_common_samplerates     (ctx, ff_make_format_list         (sample_rates      ))) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/asrc_flite.c

@@ -205,18 +205,20 @@ static av_cold void uninit(AVFilterContext *ctx)
 static int query_formats(AVFilterContext *ctx)
 {
     FliteContext *flite = ctx->priv;
+    int ret;
 
     AVFilterChannelLayouts *chlayouts = NULL;
     int64_t chlayout = av_get_default_channel_layout(flite->wave->num_channels);
     AVFilterFormats *sample_formats = NULL;
     AVFilterFormats *sample_rates = NULL;
 
-    ff_add_channel_layout(&chlayouts, chlayout);
-    ff_set_common_channel_layouts(ctx, chlayouts);
-    ff_add_format(&sample_formats, AV_SAMPLE_FMT_S16);
-    ff_set_common_formats(ctx, sample_formats);
-    ff_add_format(&sample_rates, flite->wave->sample_rate);
-    ff_set_common_samplerates (ctx, sample_rates);
+    if ((ret = ff_add_channel_layout         (&chlayouts     , chlayout                )) < 0 ||
+        (ret = ff_set_common_channel_layouts (ctx            , chlayouts               )) < 0 ||
+        (ret = ff_add_format                 (&sample_formats, AV_SAMPLE_FMT_S16       )) < 0 ||
+        (ret = ff_set_common_formats         (ctx            , sample_formats          )) < 0 ||
+        (ret = ff_add_format                 (&sample_rates  , flite->wave->sample_rate)) < 0 ||
+        (ret = ff_set_common_samplerates     (ctx            , sample_rates            )) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/avf_aphasemeter.c

@@ -70,24 +70,21 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterLink *outlink = ctx->outputs[0];
     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_NONE };
     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };
+    int ret;
 
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_formats);
-
-    ff_add_channel_layout(&layout, AV_CH_LAYOUT_STEREO);
-    ff_channel_layouts_ref(layout, &inlink->out_channel_layouts);
+    if ((ret = ff_formats_ref         (formats, &inlink->out_formats        )) < 0 ||
+        (ret = ff_add_channel_layout  (&layout, AV_CH_LAYOUT_STEREO         )) < 0 ||
+        (ret = ff_channel_layouts_ref (layout , &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_samplerates);
+    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+        return ret;
 
     formats = ff_make_format_list(pix_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/avf_avectorscope.c

@@ -126,24 +126,21 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterLink *outlink = ctx->outputs[0];
     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_NONE };
     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };
+    int ret;
 
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_formats);
-
-    ff_add_channel_layout(&layout, AV_CH_LAYOUT_STEREO);
-    ff_channel_layouts_ref(layout, &inlink->out_channel_layouts);
+    if ((ret = ff_formats_ref         (formats, &inlink->out_formats        )) < 0 ||
+        (ret = ff_add_channel_layout  (&layout, AV_CH_LAYOUT_STEREO         )) < 0 ||
+        (ret = ff_channel_layouts_ref (layout , &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_samplerates);
+    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+        return ret;
 
     formats = ff_make_format_list(pix_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/avf_concat.c

@@ -80,6 +80,7 @@ static int query_formats(AVFilterContext *ctx)
     unsigned type, nb_str, idx0 = 0, idx, str, seg;
     AVFilterFormats *formats, *rates = NULL;
     AVFilterChannelLayouts *layouts = NULL;
+    int ret;
 
     for (type = 0; type < TYPE_ALL; type++) {
         nb_str = cat->nb_streams[type];
@@ -88,26 +89,26 @@ static int query_formats(AVFilterContext *ctx)
 
             /* Set the output formats */
             formats = ff_all_formats(type);
-            if (!formats)
-                return AVERROR(ENOMEM);
-            ff_formats_ref(formats, &ctx->outputs[idx]->in_formats);
+            if ((ret = ff_formats_ref(formats, &ctx->outputs[idx]->in_formats)) < 0)
+                return ret;
+
             if (type == AVMEDIA_TYPE_AUDIO) {
                 rates = ff_all_samplerates();
-                if (!rates)
-                    return AVERROR(ENOMEM);
-                ff_formats_ref(rates, &ctx->outputs[idx]->in_samplerates);
+                if ((ret = ff_formats_ref(rates, &ctx->outputs[idx]->in_samplerates)) < 0)
+                    return ret;
                 layouts = ff_all_channel_layouts();
-                if (!layouts)
-                    return AVERROR(ENOMEM);
-                ff_channel_layouts_ref(layouts, &ctx->outputs[idx]->in_channel_layouts);
+                if ((ret = ff_channel_layouts_ref(layouts, &ctx->outputs[idx]->in_channel_layouts)) < 0)
+                    return ret;
             }
 
             /* Set the same formats for each corresponding input */
             for (seg = 0; seg < cat->nb_segments; seg++) {
-                ff_formats_ref(formats, &ctx->inputs[idx]->out_formats);
+                if ((ret = ff_formats_ref(formats, &ctx->inputs[idx]->out_formats)) < 0)
+                    return ret;
                 if (type == AVMEDIA_TYPE_AUDIO) {
-                    ff_formats_ref(rates, &ctx->inputs[idx]->out_samplerates);
-                    ff_channel_layouts_ref(layouts, &ctx->inputs[idx]->out_channel_layouts);
+                    if ((ret = ff_formats_ref(rates, &ctx->inputs[idx]->out_samplerates)) < 0 ||
+                        (ret = ff_channel_layouts_ref(layouts, &ctx->inputs[idx]->out_channel_layouts)) < 0)
+                        return ret;
                 }
                 idx += ctx->nb_outputs;
             }

libavfilter/avf_showcqt.c

@@ -136,28 +136,25 @@ static int query_formats(AVFilterContext *ctx)
     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE };
     static const int64_t channel_layouts[] = { AV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_STEREO_DOWNMIX, -1 };
     static const int samplerates[] = { 44100, 48000, -1 };
+    int ret;
 
     /* set input audio formats */
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_formats);
+    if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0)
+        return ret;
 
     layouts = avfilter_make_format64_list(channel_layouts);
-    if (!layouts)
-        return AVERROR(ENOMEM);
-    ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     formats = ff_make_format_list(samplerates);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_samplerates);
+    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+        return ret;
 
     /* set output video format */
     formats = ff_make_format_list(pix_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/avf_showfreqs.c

@@ -128,28 +128,25 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterLink *outlink = ctx->outputs[0];
     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };
+    int ret;
 
     /* set input audio formats */
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_formats);
+    if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0)
+        return ret;
 
     layouts = ff_all_channel_layouts();
-    if (!layouts)
-        return AVERROR(ENOMEM);
-    ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_samplerates);
+    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+        return ret;
 
     /* set output video format */
     formats = ff_make_format_list(pix_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/avf_showspectrum.c

@@ -126,28 +126,25 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterLink *outlink = ctx->outputs[0];
     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16P, AV_SAMPLE_FMT_NONE };
     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_NONE };
+    int ret;
 
     /* set input audio formats */
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_formats);
+    if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0)
+        return ret;
 
     layouts = ff_all_channel_layouts();
-    if (!layouts)
-        return AVERROR(ENOMEM);
-    ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_samplerates);
+    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+        return ret;
 
     /* set output video format */
     formats = ff_make_format_list(pix_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/avf_showvolume.c

@@ -85,26 +85,23 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterLink *outlink = ctx->outputs[0];
     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };
+    int ret;
 
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_formats);
+    if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0)
+        return ret;
 
     layouts = ff_all_channel_layouts();
-    if (!layouts)
-        return AVERROR(ENOMEM);
-    ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_samplerates);
+    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+        return ret;
 
     formats = ff_make_format_list(pix_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/avf_showwaves.c

@@ -117,28 +117,25 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterLink *outlink = ctx->outputs[0];
     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
+    int ret;
 
     /* set input audio formats */
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_formats);
+    if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0)
+        return ret;
 
     layouts = ff_all_channel_layouts();
-    if (!layouts)
-        return AVERROR(ENOMEM);
-    ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_samplerates);
+    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+        return ret;
 
     /* set output video format */
     formats = ff_make_format_list(pix_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/avfiltergraph.c

@@ -317,18 +317,15 @@ static int filter_query_formats(AVFilterContext *ctx)
         sanitize_channel_layouts(ctx, ctx->outputs[i]->in_channel_layouts);
 
     formats = ff_all_formats(type);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_set_common_formats(ctx, formats);
+    if ((ret = ff_set_common_formats(ctx, formats)) < 0)
+        return ret;
     if (type == AVMEDIA_TYPE_AUDIO) {
         samplerates = ff_all_samplerates();
-        if (!samplerates)
-            return AVERROR(ENOMEM);
-        ff_set_common_samplerates(ctx, samplerates);
+        if ((ret = ff_set_common_samplerates(ctx, samplerates)) < 0)
+            return ret;
         chlayouts = ff_all_channel_layouts();
-        if (!chlayouts)
-            return AVERROR(ENOMEM);
-        ff_set_common_channel_layouts(ctx, chlayouts);
+        if ((ret = ff_set_common_channel_layouts(ctx, chlayouts)) < 0)
+            return ret;
     }
     return 0;
 }
@@ -728,7 +725,7 @@ static int pick_format(AVFilterLink *link, AVFilterLink *ref)
     return 0;
 }
 
-#define REDUCE_FORMATS(fmt_type, list_type, list, var, nb, add_format) \
+#define REDUCE_FORMATS(fmt_type, list_type, list, var, nb, add_format, unref_format) \
 do {                                                                   \
     for (i = 0; i < filter->nb_inputs; i++) {                          \
         AVFilterLink *link = filter->inputs[i];                        \
@@ -769,9 +766,9 @@ static int reduce_formats_on_filter(AVFilterContext *filter)
     int i, j, k, ret = 0;
 
     REDUCE_FORMATS(int,      AVFilterFormats,        formats,         formats,
-                   nb_formats, ff_add_format);
+                   nb_formats, ff_add_format, ff_formats_unref);
     REDUCE_FORMATS(int,      AVFilterFormats,        samplerates,     formats,
-                   nb_formats, ff_add_format);
+                   nb_formats, ff_add_format, ff_formats_unref);
 
     /* reduce channel layouts */
     for (i = 0; i < filter->nb_inputs; i++) {
@@ -795,7 +792,8 @@ static int reduce_formats_on_filter(AVFilterContext *filter)
                 (!FF_LAYOUT2COUNT(fmt) || fmts->all_counts)) {
                 /* Turn the infinite list into a singleton */
                 fmts->all_layouts = fmts->all_counts  = 0;
-                ff_add_channel_layout(&outlink->in_channel_layouts, fmt);
+                if (ff_add_channel_layout(&outlink->in_channel_layouts, fmt) < 0)
+                    ret = 1;
                 break;
             }
 

libavfilter/buffersink.c

@@ -302,13 +302,13 @@ static int vsink_query_formats(AVFilterContext *ctx)
     CHECK_LIST_SIZE(pixel_fmts)
     if (buf->pixel_fmts_size) {
         for (i = 0; i < NB_ITEMS(buf->pixel_fmts); i++)
-            if ((ret = ff_add_format(&formats, buf->pixel_fmts[i])) < 0) {
-                ff_formats_unref(&formats);
+            if ((ret = ff_add_format(&formats, buf->pixel_fmts[i])) < 0)
                 return ret;
-            }
-        ff_set_common_formats(ctx, formats);
+        if ((ret = ff_set_common_formats(ctx, formats)) < 0)
+            return ret;
     } else {
-        ff_default_query_formats(ctx);
+        if ((ret = ff_default_query_formats(ctx)) < 0)
+            return ret;
     }
 
     return 0;
@@ -346,25 +346,20 @@ static int asink_query_formats(AVFilterContext *ctx)
 
     if (buf->sample_fmts_size) {
         for (i = 0; i < NB_ITEMS(buf->sample_fmts); i++)
-            if ((ret = ff_add_format(&formats, buf->sample_fmts[i])) < 0) {
-                ff_formats_unref(&formats);
+            if ((ret = ff_add_format(&formats, buf->sample_fmts[i])) < 0)
                 return ret;
-            }
-        ff_set_common_formats(ctx, formats);
+        if ((ret = ff_set_common_formats(ctx, formats)) < 0)
+            return ret;
     }
 
     if (buf->channel_layouts_size || buf->channel_counts_size ||
         buf->all_channel_counts) {
         for (i = 0; i < NB_ITEMS(buf->channel_layouts); i++)
-            if ((ret = ff_add_channel_layout(&layouts, buf->channel_layouts[i])) < 0) {
-                ff_channel_layouts_unref(&layouts);
+            if ((ret = ff_add_channel_layout(&layouts, buf->channel_layouts[i])) < 0)
                 return ret;
-            }
         for (i = 0; i < NB_ITEMS(buf->channel_counts); i++)
-            if ((ret = ff_add_channel_layout(&layouts, FF_COUNT2LAYOUT(buf->channel_counts[i]))) < 0) {
-                ff_channel_layouts_unref(&layouts);
+            if ((ret = ff_add_channel_layout(&layouts, FF_COUNT2LAYOUT(buf->channel_counts[i]))) < 0)
                 return ret;
-            }
         if (buf->all_channel_counts) {
             if (layouts)
                 av_log(ctx, AV_LOG_WARNING,
@@ -372,17 +367,17 @@ static int asink_query_formats(AVFilterContext *ctx)
             else if (!(layouts = ff_all_channel_counts()))
                 return AVERROR(ENOMEM);
         }
-        ff_set_common_channel_layouts(ctx, layouts);
+        if ((ret = ff_set_common_channel_layouts(ctx, layouts)) < 0)
+            return ret;
     }
 
     if (buf->sample_rates_size) {
         formats = NULL;
         for (i = 0; i < NB_ITEMS(buf->sample_rates); i++)
-            if ((ret = ff_add_format(&formats, buf->sample_rates[i])) < 0) {
-                ff_formats_unref(&formats);
+            if ((ret = ff_add_format(&formats, buf->sample_rates[i])) < 0)
                 return ret;
-            }
-        ff_set_common_samplerates(ctx, formats);
+        if ((ret = ff_set_common_samplerates(ctx, formats)) < 0)
+            return ret;
     }
 
     return 0;

libavfilter/buffersrc.c

@@ -314,23 +314,27 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterChannelLayouts *channel_layouts = NULL;
     AVFilterFormats *formats = NULL;
     AVFilterFormats *samplerates = NULL;
+    int ret;
 
     switch (ctx->outputs[0]->type) {
     case AVMEDIA_TYPE_VIDEO:
-        ff_add_format(&formats, c->pix_fmt);
-        ff_set_common_formats(ctx, formats);
+        if ((ret = ff_add_format         (&formats, c->pix_fmt)) < 0 ||
+            (ret = ff_set_common_formats (ctx     , formats   )) < 0)
+            return ret;
         break;
     case AVMEDIA_TYPE_AUDIO:
-        ff_add_format(&formats,           c->sample_fmt);
-        ff_set_common_formats(ctx, formats);
-
-        ff_add_format(&samplerates,       c->sample_rate);
-        ff_set_common_samplerates(ctx, samplerates);
+        if ((ret = ff_add_format             (&formats    , c->sample_fmt )) < 0 ||
+            (ret = ff_set_common_formats     (ctx         , formats       )) < 0 ||
+            (ret = ff_add_format             (&samplerates, c->sample_rate)) < 0 ||
+            (ret = ff_set_common_samplerates (ctx         , samplerates   )) < 0)
+            return ret;
 
-        ff_add_channel_layout(&channel_layouts,
+        if ((ret = ff_add_channel_layout(&channel_layouts,
                               c->channel_layout ? c->channel_layout :
-                              FF_COUNT2LAYOUT(c->channels));
-        ff_set_common_channel_layouts(ctx, channel_layouts);
+                              FF_COUNT2LAYOUT(c->channels))) < 0)
+            return ret;
+        if ((ret = ff_set_common_channel_layouts(ctx, channel_layouts)) < 0)
+            return ret;
         break;
     default:
         return AVERROR(EINVAL);

libavfilter/drawutils.c

@@ -532,10 +532,12 @@ AVFilterFormats *ff_draw_supported_pixel_formats(unsigned flags)
     enum AVPixelFormat i;
     FFDrawContext draw;
     AVFilterFormats *fmts = NULL;
+    int ret;
 
     for (i = 0; av_pix_fmt_desc_get(i); i++)
-        if (ff_draw_init(&draw, i, flags) >= 0)
-            ff_add_format(&fmts, i);
+        if (ff_draw_init(&draw, i, flags) >= 0 &&
+            (ret = ff_add_format(&fmts, i)) < 0)
+            return NULL;
     return fmts;
 }
 

libavfilter/f_drawgraph.c

@@ -110,11 +110,11 @@ static int query_formats(AVFilterContext *ctx)
         AV_PIX_FMT_RGBA,
         AV_PIX_FMT_NONE
     };
+    int ret;
 
     AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
-    if (!fmts_list)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(fmts_list, &outlink->in_formats);
+    if ((ret = ff_formats_ref(fmts_list, &outlink->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/f_ebur128.c

@@ -826,6 +826,7 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterChannelLayouts *layouts;
     AVFilterLink *inlink = ctx->inputs[0];
     AVFilterLink *outlink = ctx->outputs[0];
+    int ret;
 
     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_NONE };
     static const int input_srate[] = {48000, -1}; // ITU-R BS.1770 provides coeff only for 48kHz
@@ -834,9 +835,8 @@ static int query_formats(AVFilterContext *ctx)
     /* set optional output video format */
     if (ebur128->do_video) {
         formats = ff_make_format_list(pix_fmts);
-        if (!formats)
-            return AVERROR(ENOMEM);
-        ff_formats_ref(formats, &outlink->in_formats);
+        if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+            return ret;
         outlink = ctx->outputs[1];
     }
 
@@ -844,22 +844,19 @@ static int query_formats(AVFilterContext *ctx)
      * Note: ff_set_common_* functions are not used because they affect all the
      * links, and thus break the video format negotiation */
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_formats);
-    ff_formats_ref(formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0 ||
+        (ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+        return ret;
 
     layouts = ff_all_channel_layouts();
-    if (!layouts)
-        return AVERROR(ENOMEM);
-    ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
-    ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0 ||
+        (ret = ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts)) < 0)
+        return ret;
 
     formats = ff_make_format_list(input_srate);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_samplerates);
-    ff_formats_ref(formats, &outlink->in_samplerates);
+    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0 ||
+        (ret = ff_formats_ref(formats, &outlink->in_samplerates)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/formats.c

@@ -300,17 +300,20 @@ AVFilterChannelLayouts *avfilter_make_format64_list(const int64_t *fmts)
     return formats;
 }
 
-#define ADD_FORMAT(f, fmt, type, list, nb)                  \
+#define ADD_FORMAT(f, fmt, unref_fn, type, list, nb)        \
 do {                                                        \
     type *fmts;                                             \
     void *oldf = *f;                                        \
                                                             \
-    if (!(*f) && !(*f = av_mallocz(sizeof(**f))))           \
+    if (!(*f) && !(*f = av_mallocz(sizeof(**f)))) {         \
+        unref_fn(f);                                        \
         return AVERROR(ENOMEM);                             \
+    }                                                       \
                                                             \
     fmts = av_realloc_array((*f)->list, (*f)->nb + 1,       \
                             sizeof(*(*f)->list));           \
     if (!fmts) {                                            \
+        unref_fn(f);                                        \
         if (!oldf)                                          \
             av_freep(f);                                    \
         return AVERROR(ENOMEM);                             \
@@ -322,14 +325,14 @@ do {                                                        \
 
 int ff_add_format(AVFilterFormats **avff, int64_t fmt)
 {
-    ADD_FORMAT(avff, fmt, int, formats, nb_formats);
+    ADD_FORMAT(avff, fmt, ff_formats_unref, int, formats, nb_formats);
     return 0;
 }
 
 int ff_add_channel_layout(AVFilterChannelLayouts **l, uint64_t channel_layout)
 {
     av_assert1(!(*l && (*l)->all_layouts));
-    ADD_FORMAT(l, channel_layout, uint64_t, channel_layouts, nb_channel_layouts);
+    ADD_FORMAT(l, channel_layout, ff_channel_layouts_unref, uint64_t, channel_layouts, nb_channel_layouts);
     return 0;
 }
 
@@ -340,12 +343,14 @@ AVFilterFormats *ff_all_formats(enum AVMediaType type)
     if (type == AVMEDIA_TYPE_VIDEO) {
         const AVPixFmtDescriptor *desc = NULL;
         while ((desc = av_pix_fmt_desc_next(desc))) {
-            ff_add_format(&ret, av_pix_fmt_desc_get_id(desc));
+            if (ff_add_format(&ret, av_pix_fmt_desc_get_id(desc)) < 0)
+                return NULL;
         }
     } else if (type == AVMEDIA_TYPE_AUDIO) {
         enum AVSampleFormat fmt = 0;
         while (av_get_sample_fmt_name(fmt)) {
-            ff_add_format(&ret, fmt);
+            if (ff_add_format(&ret, fmt) < 0)
+                return NULL;
             fmt++;
         }
     }
@@ -370,7 +375,8 @@ AVFilterFormats *ff_planar_sample_fmts(void)
 
     for (fmt = 0; av_get_bytes_per_sample(fmt)>0; fmt++)
         if (av_sample_fmt_is_planar(fmt))
-            ff_add_format(&ret, fmt);
+            if (ff_add_format(&ret, fmt) < 0)
+                return NULL;
 
     return ret;
 }
@@ -399,15 +405,17 @@ AVFilterChannelLayouts *ff_all_channel_counts(void)
     return ret;
 }
 
-#define FORMATS_REF(f, ref)                                                     \
+#define FORMATS_REF(f, ref, unref_fn)                                           \
     void *tmp;                                                                  \
                                                                                 \
-    if (!ref)                                                                   \
-        return AVERROR_BUG;                                                     \
+    if (!f || !ref)                                                             \
+        return AVERROR(ENOMEM);                                                 \
                                                                                 \
     tmp = av_realloc_array(f->refs, sizeof(*f->refs), f->refcount + 1);         \
-    if (!tmp)                                                                   \
+    if (!tmp) {                                                                 \
+        unref_fn(&f);                                                           \
         return AVERROR(ENOMEM);                                                 \
+    }                                                                           \
     f->refs = tmp;                                                              \
     f->refs[f->refcount++] = ref;                                               \
     *ref = f;                                                                   \
@@ -415,12 +423,12 @@ AVFilterChannelLayouts *ff_all_channel_counts(void)
 
 int ff_channel_layouts_ref(AVFilterChannelLayouts *f, AVFilterChannelLayouts **ref)
 {
-    FORMATS_REF(f, ref);
+    FORMATS_REF(f, ref, ff_channel_layouts_unref);
 }
 
 int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
 {
-    FORMATS_REF(f, ref);
+    FORMATS_REF(f, ref, ff_formats_unref);
 }
 
 #define FIND_REF_INDEX(ref, idx)            \
@@ -488,25 +496,29 @@ void ff_formats_changeref(AVFilterFormats **oldref, AVFilterFormats **newref)
     FORMATS_CHANGEREF(oldref, newref);
 }
 
-#define SET_COMMON_FORMATS(ctx, fmts, in_fmts, out_fmts, ref, list) \
+#define SET_COMMON_FORMATS(ctx, fmts, in_fmts, out_fmts, ref_fn, unref_fn, list) \
     int count = 0, i;                                               \
                                                                     \
     if (!fmts)                                                      \
-        return AVERROR_BUG;                                         \
+        return AVERROR(ENOMEM);                                     \
                                                                     \
     for (i = 0; i < ctx->nb_inputs; i++) {                          \
         if (ctx->inputs[i] && !ctx->inputs[i]->out_fmts) {          \
-            int ret = ref(fmts, &ctx->inputs[i]->out_fmts);         \
-            if (ret < 0)                                            \
+            int ret = ref_fn(fmts, &ctx->inputs[i]->out_fmts);      \
+            if (ret < 0) {                                          \
+                unref_fn(&fmts);                                    \
                 return ret;                                         \
+            }                                                       \
             count++;                                                \
         }                                                           \
     }                                                               \
     for (i = 0; i < ctx->nb_outputs; i++) {                         \
         if (ctx->outputs[i] && !ctx->outputs[i]->in_fmts) {         \
-            int ret = ref(fmts, &ctx->outputs[i]->in_fmts);         \
-            if (ret < 0)                                            \
+            int ret = ref_fn(fmts, &ctx->outputs[i]->in_fmts);      \
+            if (ret < 0) {                                          \
+                unref_fn(&fmts);                                    \
                 return ret;                                         \
+            }                                                       \
             count++;                                                \
         }                                                           \
     }                                                               \
@@ -523,14 +535,14 @@ int ff_set_common_channel_layouts(AVFilterContext *ctx,
                                   AVFilterChannelLayouts *layouts)
 {
     SET_COMMON_FORMATS(ctx, layouts, in_channel_layouts, out_channel_layouts,
-                       ff_channel_layouts_ref, channel_layouts);
+                       ff_channel_layouts_ref, ff_channel_layouts_unref, channel_layouts);
 }
 
 int ff_set_common_samplerates(AVFilterContext *ctx,
                               AVFilterFormats *samplerates)
 {
     SET_COMMON_FORMATS(ctx, samplerates, in_samplerates, out_samplerates,
-                       ff_formats_ref, formats);
+                       ff_formats_ref, ff_formats_unref, formats);
 }
 
 /**
@@ -541,7 +553,7 @@ int ff_set_common_samplerates(AVFilterContext *ctx,
 int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
 {
     SET_COMMON_FORMATS(ctx, formats, in_formats, out_formats,
-                       ff_formats_ref, formats);
+                       ff_formats_ref, ff_formats_unref, formats);
 }
 
 static int default_query_formats_common(AVFilterContext *ctx,

libavfilter/src_movie.c

@@ -333,7 +333,7 @@ static int movie_query_formats(AVFilterContext *ctx)
     MovieContext *movie = ctx->priv;
     int list[] = { 0, -1 };
     int64_t list64[] = { 0, -1 };
-    int i;
+    int i, ret;
 
     for (i = 0; i < ctx->nb_outputs; i++) {
         MovieStream *st = &movie->st[i];
@@ -343,16 +343,20 @@ static int movie_query_formats(AVFilterContext *ctx)
         switch (c->codec_type) {
         case AVMEDIA_TYPE_VIDEO:
             list[0] = c->pix_fmt;
-            ff_formats_ref(ff_make_format_list(list), &outlink->in_formats);
+            if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->in_formats)) < 0)
+                return ret;
             break;
         case AVMEDIA_TYPE_AUDIO:
             list[0] = c->sample_fmt;
-            ff_formats_ref(ff_make_format_list(list), &outlink->in_formats);
+            if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->in_formats)) < 0)
+                return ret;
             list[0] = c->sample_rate;
-            ff_formats_ref(ff_make_format_list(list), &outlink->in_samplerates);
+            if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->in_samplerates)) < 0)
+                return ret;
             list64[0] = c->channel_layout;
-            ff_channel_layouts_ref(avfilter_make_format64_list(list64),
-                                   &outlink->in_channel_layouts);
+            if ((ret = ff_channel_layouts_ref(avfilter_make_format64_list(list64),
+                                   &outlink->in_channel_layouts)) < 0)
+                return ret;
             break;
         }
     }

libavfilter/vf_alphamerge.c

@@ -57,11 +57,16 @@ static int query_formats(AVFilterContext *ctx)
         AV_PIX_FMT_NONE
     };
     static const enum AVPixelFormat alpha_fmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
-    AVFilterFormats *main_formats = ff_make_format_list(main_fmts);
-    AVFilterFormats *alpha_formats = ff_make_format_list(alpha_fmts);
-    ff_formats_ref(main_formats, &ctx->inputs[0]->out_formats);
-    ff_formats_ref(alpha_formats, &ctx->inputs[1]->out_formats);
-    ff_formats_ref(main_formats, &ctx->outputs[0]->in_formats);
+    AVFilterFormats *main_formats, *alpha_formats;
+    int ret;
+
+    if (!(main_formats = ff_make_format_list(main_fmts)) ||
+        !(alpha_formats = ff_make_format_list(alpha_fmts)))
+        return AVERROR(ENOMEM);
+    if ((ret = ff_formats_ref(main_formats , &ctx->inputs[0]->out_formats)) < 0 ||
+        (ret = ff_formats_ref(alpha_formats, &ctx->inputs[1]->out_formats)) < 0 ||
+        (ret = ff_formats_ref(main_formats , &ctx->outputs[0]->in_formats)) < 0)
+        return ret;
     return 0;
 }
 

libavfilter/vf_boxblur.c

@@ -118,14 +118,15 @@ static av_cold void uninit(AVFilterContext *ctx)
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
         if (!(desc->flags & (AV_PIX_FMT_FLAG_HWACCEL | AV_PIX_FMT_FLAG_BITSTREAM | AV_PIX_FMT_FLAG_PAL)) &&
             (desc->flags & AV_PIX_FMT_FLAG_PLANAR || desc->nb_components == 1) &&
-            (!(desc->flags & AV_PIX_FMT_FLAG_BE) == !HAVE_BIGENDIAN || desc->comp[0].depth == 8))
-            ff_add_format(&formats, fmt);
+            (!(desc->flags & AV_PIX_FMT_FLAG_BE) == !HAVE_BIGENDIAN || desc->comp[0].depth == 8) &&
+            (ret = ff_add_format(&formats, fmt)) < 0)
+            return ret;
     }
 
     return ff_set_common_formats(ctx, formats);

libavfilter/vf_crop.c

@@ -93,13 +93,14 @@ typedef struct CropContext {
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
         if (!(desc->flags & (AV_PIX_FMT_FLAG_HWACCEL | AV_PIX_FMT_FLAG_BITSTREAM)) &&
-            !((desc->log2_chroma_w || desc->log2_chroma_h) && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)))
-            ff_add_format(&formats, fmt);
+            !((desc->log2_chroma_w || desc->log2_chroma_h) && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) &&
+            (ret = ff_add_format(&formats, fmt)) < 0)
+            return ret;
     }
 
     return ff_set_common_formats(ctx, formats);

libavfilter/vf_detelecine.c

@@ -116,14 +116,15 @@ static av_cold int init(AVFilterContext *ctx)
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *pix_fmts = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
               desc->flags & AV_PIX_FMT_FLAG_PAL     ||
-              desc->flags & AV_PIX_FMT_FLAG_BITSTREAM))
-            ff_add_format(&pix_fmts, fmt);
+              desc->flags & AV_PIX_FMT_FLAG_BITSTREAM) &&
+             (ret = ff_add_format(&pix_fmts, fmt)) < 0)
+            return ret;
     }
 
     return ff_set_common_formats(ctx, pix_fmts);

libavfilter/vf_displace.c

@@ -76,8 +76,7 @@ static int query_formats(AVFilterContext *ctx)
         AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE
     };
 
-    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
-    return 0;
+    return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
 }
 
 static void displace_planar(DisplaceContext *s, const AVFrame *in,

libavfilter/vf_elbg.c

@@ -83,6 +83,7 @@ static av_cold int init(AVFilterContext *ctx)
 static int query_formats(AVFilterContext *ctx)
 {
     ELBGContext *elbg = ctx->priv;
+    int ret;
 
     static const enum AVPixelFormat pix_fmts[] = {
         AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA,
@@ -99,8 +100,9 @@ static int query_formats(AVFilterContext *ctx)
             AV_PIX_FMT_PAL8,
             AV_PIX_FMT_NONE
         };
-        ff_formats_ref(ff_make_format_list(pix_fmts), &ctx->inputs[0]->out_formats);
-        ff_formats_ref(ff_make_format_list(pal8_fmt), &ctx->outputs[0]->in_formats);
+        if ((ret = ff_formats_ref(ff_make_format_list(pix_fmts), &ctx->inputs[0]->out_formats)) < 0 ||
+            (ret = ff_formats_ref(ff_make_format_list(pal8_fmt), &ctx->outputs[0]->in_formats)) < 0)
+            return ret;
     }
     return 0;
 }

libavfilter/vf_extractplanes.c

@@ -99,7 +99,7 @@ static int query_formats(AVFilterContext *ctx)
     const enum AVPixelFormat *out_pixfmts;
     const AVPixFmtDescriptor *desc;
     AVFilterFormats *avff;
-    int i, depth = 0, be = 0;
+    int i, ret, depth = 0, be = 0;
 
     if (!ctx->inputs[0]->in_formats ||
         !ctx->inputs[0]->in_formats->nb_formats) {
@@ -107,7 +107,8 @@ static int query_formats(AVFilterContext *ctx)
     }
 
     if (!ctx->inputs[0]->out_formats)
-        ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->out_formats);
+        if ((ret = ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->out_formats)) < 0)
+            return ret;
 
     avff = ctx->inputs[0]->in_formats;
     desc = av_pix_fmt_desc_get(avff->formats[0]);
@@ -129,7 +130,8 @@ static int query_formats(AVFilterContext *ctx)
         out_pixfmts = out16le_pixfmts;
 
     for (i = 0; i < ctx->nb_outputs; i++)
-        ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->in_formats);
+        if ((ret = ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->in_formats)) < 0)
+            return ret;
     return 0;
 }
 

libavfilter/vf_fieldorder.c

@@ -55,13 +55,12 @@ static int query_formats(AVFilterContext *ctx)
                   desc->flags & AV_PIX_FMT_FLAG_PAL     ||
                   desc->flags & AV_PIX_FMT_FLAG_BITSTREAM) &&
                 desc->nb_components && !desc->log2_chroma_h &&
-                (ret = ff_add_format(&formats, pix_fmt)) < 0) {
-                ff_formats_unref(&formats);
+                (ret = ff_add_format(&formats, pix_fmt)) < 0)
                 return ret;
-            }
         }
-        ff_formats_ref(formats, &ctx->inputs[0]->out_formats);
-        ff_formats_ref(formats, &ctx->outputs[0]->in_formats);
+        if ((ret = ff_formats_ref(formats, &ctx->inputs[0]->out_formats)) < 0 ||
+            (ret = ff_formats_ref(formats, &ctx->outputs[0]->in_formats)) < 0)
+            return ret;
     }
 
     return 0;

libavfilter/vf_frei0r.c

@@ -370,11 +370,14 @@ static int query_formats(AVFilterContext *ctx)
 {
     Frei0rContext *s = ctx->priv;
     AVFilterFormats *formats = NULL;
+    int ret;
 
     if        (s->plugin_info.color_model == F0R_COLOR_MODEL_BGRA8888) {
-        ff_add_format(&formats, AV_PIX_FMT_BGRA);
+        if ((ret = ff_add_format(&formats, AV_PIX_FMT_BGRA)) < 0)
+            return ret;
     } else if (s->plugin_info.color_model == F0R_COLOR_MODEL_RGBA8888) {
-        ff_add_format(&formats, AV_PIX_FMT_RGBA);
+        if ((ret = ff_add_format(&formats, AV_PIX_FMT_RGBA)) < 0)
+            return ret;
     } else {                                   /* F0R_COLOR_MODEL_PACKED32 */
         static const enum AVPixelFormat pix_fmts[] = {
             AV_PIX_FMT_BGRA, AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_ARGB, AV_PIX_FMT_NONE

libavfilter/vf_hflip.c

@@ -44,15 +44,16 @@ typedef struct FlipContext {
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *pix_fmts = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
               desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ||
               (desc->log2_chroma_w != desc->log2_chroma_h &&
-               desc->comp[0].plane == desc->comp[1].plane)))
-            ff_add_format(&pix_fmts, fmt);
+               desc->comp[0].plane == desc->comp[1].plane)) &&
+            (ret = ff_add_format(&pix_fmts, fmt)) < 0)
+            return ret;
     }
 
     return ff_set_common_formats(ctx, pix_fmts);

libavfilter/vf_histogram.c

@@ -155,6 +155,7 @@ static int query_formats(AVFilterContext *ctx)
     HistogramContext *h = ctx->priv;
     const enum AVPixelFormat *pix_fmts;
     AVFilterFormats *fmts_list;
+    int ret;
 
     switch (h->mode) {
     case MODE_WAVEFORM:
@@ -173,7 +174,8 @@ static int query_formats(AVFilterContext *ctx)
         }
 
         if (!ctx->inputs[0]->out_formats)
-            ff_formats_ref(ff_make_format_list(levels_in_pix_fmts), &ctx->inputs[0]->out_formats);
+            if ((ret = ff_formats_ref(ff_make_format_list(levels_in_pix_fmts), &ctx->inputs[0]->out_formats)) < 0)
+                return ret;
         avff = ctx->inputs[0]->in_formats;
         desc = av_pix_fmt_desc_get(avff->formats[0]);
         rgb = desc->flags & AV_PIX_FMT_FLAG_RGB;
@@ -197,7 +199,8 @@ static int query_formats(AVFilterContext *ctx)
             out_pix_fmts = levels_out_yuv9_pix_fmts;
         else // if (bits == 10)
             out_pix_fmts = levels_out_yuv10_pix_fmts;
-        ff_formats_ref(ff_make_format_list(out_pix_fmts), &ctx->outputs[0]->in_formats);
+        if ((ret = ff_formats_ref(ff_make_format_list(out_pix_fmts), &ctx->outputs[0]->in_formats)) < 0)
+            return ret;
 
         return 0;
     }

libavfilter/vf_il.c

@@ -84,12 +84,14 @@ AVFILTER_DEFINE_CLASS(il);
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
-        if (!(desc->flags & AV_PIX_FMT_FLAG_PAL) && !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
-            ff_add_format(&formats, fmt);
+        if (!(desc->flags & AV_PIX_FMT_FLAG_PAL) &&
+            !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL) &&
+            (ret = ff_add_format(&formats, fmt)) < 0)
+            return ret;
     }
 
     return ff_set_common_formats(ctx, formats);

libavfilter/vf_maskedmerge.c

@@ -58,8 +58,7 @@ static int query_formats(AVFilterContext *ctx)
         AV_PIX_FMT_NONE
     };
 
-    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
-    return 0;
+    return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
 }
 
 static int process_frame(FFFrameSync *fs)

libavfilter/vf_mergeplanes.c

@@ -116,22 +116,25 @@ static int query_formats(AVFilterContext *ctx)
 {
     MergePlanesContext *s = ctx->priv;
     AVFilterFormats *formats = NULL;
-    int i;
+    int i, ret;
 
     s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
     for (i = 0; av_pix_fmt_desc_get(i); i++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
         if (desc->comp[0].depth == s->outdesc->comp[0].depth &&
-            av_pix_fmt_count_planes(i) == desc->nb_components)
-            ff_add_format(&formats, i);
+            av_pix_fmt_count_planes(i) == desc->nb_components &&
+            (ret = ff_add_format(&formats, i)) < 0)
+                return ret;
     }
 
     for (i = 0; i < s->nb_inputs; i++)
-        ff_formats_ref(formats, &ctx->inputs[i]->out_formats);
+        if ((ret = ff_formats_ref(formats, &ctx->inputs[i]->out_formats)) < 0)
+            return ret;
 
     formats = NULL;
-    ff_add_format(&formats, s->out_fmt);
-    ff_formats_ref(formats, &ctx->outputs[0]->in_formats);
+    if ((ret = ff_add_format(&formats, s->out_fmt)) < 0 ||
+        (ret = ff_formats_ref(formats, &ctx->outputs[0]->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/vf_neighbor.c

@@ -49,8 +49,7 @@ static int query_formats(AVFilterContext *ctx)
         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE
     };
 
-    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
-    return 0;
+    return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
 }
 
 static av_cold void uninit(AVFilterContext *ctx)

libavfilter/vf_noise.c

@@ -133,12 +133,13 @@ static av_cold int init_noise(NoiseContext *n, int comp)
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
-        if (desc->flags & AV_PIX_FMT_FLAG_PLANAR && !(desc->comp[0].depth & 7))
-            ff_add_format(&formats, fmt);
+        if (desc->flags & AV_PIX_FMT_FLAG_PLANAR && !(desc->comp[0].depth & 7)
+            && (ret = ff_add_format(&formats, fmt)) < 0)
+                return ret;
     }
 
     return ff_set_common_formats(ctx, formats);

libavfilter/vf_overlay.c

@@ -247,31 +247,37 @@ static int query_formats(AVFilterContext *ctx)
 
     AVFilterFormats *main_formats;
     AVFilterFormats *overlay_formats;
+    int ret;
 
     switch (s->format) {
     case OVERLAY_FORMAT_YUV420:
-        main_formats    = ff_make_format_list(main_pix_fmts_yuv420);
-        overlay_formats = ff_make_format_list(overlay_pix_fmts_yuv420);
+        if (!(main_formats    = ff_make_format_list(main_pix_fmts_yuv420)) ||
+            !(overlay_formats = ff_make_format_list(overlay_pix_fmts_yuv420)))
+            return AVERROR(ENOMEM);
         break;
     case OVERLAY_FORMAT_YUV422:
-        main_formats    = ff_make_format_list(main_pix_fmts_yuv422);
-        overlay_formats = ff_make_format_list(overlay_pix_fmts_yuv422);
+        if (!(main_formats    = ff_make_format_list(main_pix_fmts_yuv422)) ||
+            !(overlay_formats = ff_make_format_list(overlay_pix_fmts_yuv422)))
+            return AVERROR(ENOMEM);
         break;
     case OVERLAY_FORMAT_YUV444:
-        main_formats    = ff_make_format_list(main_pix_fmts_yuv444);
-        overlay_formats = ff_make_format_list(overlay_pix_fmts_yuv444);
+        if (!(main_formats    = ff_make_format_list(main_pix_fmts_yuv444)) ||
+            !(overlay_formats = ff_make_format_list(overlay_pix_fmts_yuv444)))
+            return AVERROR(ENOMEM);
         break;
     case OVERLAY_FORMAT_RGB:
-        main_formats    = ff_make_format_list(main_pix_fmts_rgb);
-        overlay_formats = ff_make_format_list(overlay_pix_fmts_rgb);
+        if (!(main_formats    = ff_make_format_list(main_pix_fmts_rgb)) ||
+            !(overlay_formats = ff_make_format_list(overlay_pix_fmts_rgb)))
+            return AVERROR(ENOMEM);
         break;
     default:
         av_assert0(0);
     }
 
-    ff_formats_ref(main_formats,    &ctx->inputs [MAIN   ]->out_formats);
-    ff_formats_ref(overlay_formats, &ctx->inputs [OVERLAY]->out_formats);
-    ff_formats_ref(main_formats,    &ctx->outputs[MAIN   ]->in_formats );
+    if ((ret = ff_formats_ref(main_formats   , &ctx->inputs[MAIN]->out_formats   )) < 0 ||
+        (ret = ff_formats_ref(overlay_formats, &ctx->inputs[OVERLAY]->out_formats)) < 0 ||
+        (ret = ff_formats_ref(main_formats   , &ctx->outputs[MAIN]->in_formats   )) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/vf_palettegen.c

@@ -92,6 +92,7 @@ static int query_formats(AVFilterContext *ctx)
 {
     static const enum AVPixelFormat in_fmts[]  = {AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE};
     static const enum AVPixelFormat out_fmts[] = {AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE};
+    int ret;
     AVFilterFormats *in  = ff_make_format_list(in_fmts);
     AVFilterFormats *out = ff_make_format_list(out_fmts);
     if (!in || !out) {
@@ -99,8 +100,9 @@ static int query_formats(AVFilterContext *ctx)
         av_freep(&out);
         return AVERROR(ENOMEM);
     }
-    ff_formats_ref(in,  &ctx->inputs[0]->out_formats);
-    ff_formats_ref(out, &ctx->outputs[0]->in_formats);
+    if ((ret = ff_formats_ref(in , &ctx->inputs[0]->out_formats)) < 0 ||
+        (ret = ff_formats_ref(out, &ctx->outputs[0]->in_formats)) < 0)
+        return ret;
     return 0;
 }
 

libavfilter/vf_paletteuse.c

@@ -132,6 +132,7 @@ static int query_formats(AVFilterContext *ctx)
     static const enum AVPixelFormat in_fmts[]    = {AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE};
     static const enum AVPixelFormat inpal_fmts[] = {AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE};
     static const enum AVPixelFormat out_fmts[]   = {AV_PIX_FMT_PAL8,  AV_PIX_FMT_NONE};
+    int ret;
     AVFilterFormats *in    = ff_make_format_list(in_fmts);
     AVFilterFormats *inpal = ff_make_format_list(inpal_fmts);
     AVFilterFormats *out   = ff_make_format_list(out_fmts);
@@ -141,9 +142,10 @@ static int query_formats(AVFilterContext *ctx)
         av_freep(&out);
         return AVERROR(ENOMEM);
     }
-    ff_formats_ref(in,    &ctx->inputs[0]->out_formats);
-    ff_formats_ref(inpal, &ctx->inputs[1]->out_formats);
-    ff_formats_ref(out,   &ctx->outputs[0]->in_formats);
+    if ((ret = ff_formats_ref(in   , &ctx->inputs[0]->out_formats)) < 0 ||
+        (ret = ff_formats_ref(inpal, &ctx->inputs[1]->out_formats)) < 0 ||
+        (ret = ff_formats_ref(out  , &ctx->outputs[0]->in_formats)) < 0)
+        return ret;
     return 0;
 }
 

libavfilter/vf_scale.c

@@ -188,11 +188,11 @@ static int query_formats(AVFilterContext *ctx)
             if ((sws_isSupportedInput(pix_fmt) ||
                  sws_isSupportedEndiannessConversion(pix_fmt))
                 && (ret = ff_add_format(&formats, pix_fmt)) < 0) {
-                ff_formats_unref(&formats);
                 return ret;
             }
         }
-        ff_formats_ref(formats, &ctx->inputs[0]->out_formats);
+        if ((ret = ff_formats_ref(formats, &ctx->inputs[0]->out_formats)) < 0)
+            return ret;
     }
     if (ctx->outputs[0]) {
         const AVPixFmtDescriptor *desc = NULL;
@@ -202,11 +202,11 @@ static int query_formats(AVFilterContext *ctx)
             if ((sws_isSupportedOutput(pix_fmt) || pix_fmt == AV_PIX_FMT_PAL8 ||
                  sws_isSupportedEndiannessConversion(pix_fmt))
                 && (ret = ff_add_format(&formats, pix_fmt)) < 0) {
-                ff_formats_unref(&formats);
                 return ret;
             }
         }
-        ff_formats_ref(formats, &ctx->outputs[0]->in_formats);
+        if ((ret = ff_formats_ref(formats, &ctx->outputs[0]->in_formats)) < 0)
+            return ret;
     }
 
     return 0;

libavfilter/vf_showpalette.c

@@ -46,6 +46,7 @@ static int query_formats(AVFilterContext *ctx)
 {
     static const enum AVPixelFormat in_fmts[]  = {AV_PIX_FMT_PAL8,  AV_PIX_FMT_NONE};
     static const enum AVPixelFormat out_fmts[] = {AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE};
+    int ret;
     AVFilterFormats *in  = ff_make_format_list(in_fmts);
     AVFilterFormats *out = ff_make_format_list(out_fmts);
     if (!in || !out) {
@@ -53,8 +54,9 @@ static int query_formats(AVFilterContext *ctx)
         av_freep(&out);
         return AVERROR(ENOMEM);
     }
-    ff_formats_ref(in,  &ctx->inputs[0]->out_formats);
-    ff_formats_ref(out, &ctx->outputs[0]->in_formats);
+    if ((ret = ff_formats_ref(in , &ctx->inputs[0]->out_formats)) < 0 ||
+        (ret = ff_formats_ref(out, &ctx->outputs[0]->in_formats)) < 0)
+        return ret;
     return 0;
 }
 

libavfilter/vf_stack.c

@@ -43,14 +43,15 @@ typedef struct StackContext {
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *pix_fmts = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
         if (!(desc->flags & AV_PIX_FMT_FLAG_PAL ||
               desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
-              desc->flags & AV_PIX_FMT_FLAG_BITSTREAM))
-            ff_add_format(&pix_fmts, fmt);
+              desc->flags & AV_PIX_FMT_FLAG_BITSTREAM) &&
+            (ret = ff_add_format(&pix_fmts, fmt)) < 0)
+            return ret;
     }
 
     return ff_set_common_formats(ctx, pix_fmts);

libavfilter/vf_swapuv.c

@@ -77,12 +77,12 @@ static int is_planar_yuv(const AVPixFmtDescriptor *desc)
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
-        if (is_planar_yuv(desc))
-            ff_add_format(&formats, fmt);
+        if (is_planar_yuv(desc) && (ret = ff_add_format(&formats, fmt)) < 0)
+            return ret;
     }
 
     return ff_set_common_formats(ctx, formats);

libavfilter/vf_telecine.c

@@ -102,14 +102,15 @@ static av_cold int init(AVFilterContext *ctx)
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *pix_fmts = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
               desc->flags & AV_PIX_FMT_FLAG_PAL     ||
-              desc->flags & AV_PIX_FMT_FLAG_BITSTREAM))
-            ff_add_format(&pix_fmts, fmt);
+              desc->flags & AV_PIX_FMT_FLAG_BITSTREAM) &&
+            (ret = ff_add_format(&pix_fmts, fmt)) < 0)
+            return ret;
     }
 
     return ff_set_common_formats(ctx, pix_fmts);

libavfilter/vf_transpose.c

@@ -63,15 +63,16 @@ typedef struct TransContext {
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *pix_fmts = NULL;
-    int fmt;
+    int fmt, ret;
 
     for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
         if (!(desc->flags & AV_PIX_FMT_FLAG_PAL ||
               desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
               desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ||
-              desc->log2_chroma_w != desc->log2_chroma_h))
-            ff_add_format(&pix_fmts, fmt);
+              desc->log2_chroma_w != desc->log2_chroma_h) &&
+            (ret = ff_add_format(&pix_fmts, fmt)) < 0)
+            return ret;
     }
 
 

libavfilter/vf_vectorscope.c

@@ -140,7 +140,7 @@ static int query_formats(AVFilterContext *ctx)
     const enum AVPixelFormat *out_pix_fmts;
     const AVPixFmtDescriptor *desc;
     AVFilterFormats *avff;
-    int depth, rgb, i;
+    int depth, rgb, i, ret;
 
     if (!ctx->inputs[0]->in_formats ||
         !ctx->inputs[0]->in_formats->nb_formats) {
@@ -154,7 +154,8 @@ static int query_formats(AVFilterContext *ctx)
             in_pix_fmts = in2_pix_fmts;
         else
             in_pix_fmts = in1_pix_fmts;
-        ff_formats_ref(ff_make_format_list(in_pix_fmts), &ctx->inputs[0]->out_formats);
+        if ((ret = ff_formats_ref(ff_make_format_list(in_pix_fmts), &ctx->inputs[0]->out_formats)) < 0)
+            return ret;
     }
 
     avff = ctx->inputs[0]->in_formats;
@@ -180,7 +181,8 @@ static int query_formats(AVFilterContext *ctx)
         out_pix_fmts = out_yuv10_pix_fmts;
     else
         out_pix_fmts = out_yuv8_pix_fmts;
-    ff_formats_ref(ff_make_format_list(out_pix_fmts), &ctx->outputs[0]->in_formats);
+    if ((ret = ff_formats_ref(ff_make_format_list(out_pix_fmts), &ctx->outputs[0]->in_formats)) < 0)
+        return ret;
 
     return 0;
 }

libavfilter/vsrc_life.c

@@ -428,10 +428,7 @@ static int query_formats(AVFilterContext *ctx)
     }
 
     fmts_list = ff_make_format_list(pix_fmts);
-    if (!fmts_list)
-        return AVERROR(ENOMEM);
-    ff_set_common_formats(ctx, fmts_list);
-    return 0;
+    return ff_set_common_formats(ctx, fmts_list);
 }
 
 static const AVFilterPad life_outputs[] = {