avfilter: Constify all AVFilters

[ffmpeg] / libavfilter / avf_abitscope.c

diff --git a/libavfilter/avf_abitscope.c b/libavfilter/avf_abitscope.c
index 0e3eaa422e3ba80b66c3b9ed1a1ca4215b3307ef..c38c73e0e5b798ad18b7c5102c4d928b1abcc4c9 100644 (file)
--- a/libavfilter/avf_abitscope.c
+++ b/libavfilter/avf_abitscope.c
@@ -24,6 +24,7 @@
 #include "libavutil/opt.h"
 #include "libavutil/parseutils.h"
 #include "avfilter.h"
+#include "filters.h"
 #include "formats.h"
 #include "audio.h"
 #include "video.h"
@@ -36,6 +37,7 @@ typedef struct AudioBitScopeContext {
     char *colors;
 
     int nb_channels;
+    int nb_samples;
     int depth;
     uint8_t *fg;
 
@@ -67,21 +69,21 @@ static int query_formats(AVFilterContext *ctx)
     int ret;
 
     formats = ff_make_format_list(sample_fmts);
-    if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0)
+    if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0)
         return ret;
 
     layouts = ff_all_channel_counts();
     if (!layouts)
         return AVERROR(ENOMEM);
-    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->outcfg.channel_layouts)) < 0)
         return ret;
 
     formats = ff_all_samplerates();
-    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+    if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
         return ret;
 
     formats = ff_make_format_list(pix_fmts);
-    if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+    if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
         return ret;
 
     return 0;
@@ -91,13 +93,10 @@ static int config_input(AVFilterLink *inlink)
 {
     AVFilterContext *ctx = inlink->dst;
     AudioBitScopeContext *s = ctx->priv;
-    int ch, nb_samples;
+    int ch;
     char *colors, *saveptr = NULL;
 
-    nb_samples = FFMAX(1024, ((double)inlink->sample_rate / av_q2d(s->frame_rate)) + 0.5);
-    inlink->partial_buf_size =
-    inlink->min_samples =
-    inlink->max_samples = nb_samples;
+    s->nb_samples = FFMAX(1, av_rescale(inlink->sample_rate, s->frame_rate.den, s->frame_rate.num));
     s->nb_channels = inlink->channels;
     s->depth = inlink->format == AV_SAMPLE_FMT_S16P ? 16 : 32;
 
@@ -143,7 +142,7 @@ static void count_bits(AudioBitScopeContext *s, uint32_t sample, int max)
     int i;
 
     for (i = 0; i < max; i++) {
-        if (sample & (1 << i))
+        if (sample & (1U << i))
             s->counter[i]++;
     }
 }
@@ -222,12 +221,33 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
     return ff_filter_frame(outlink, outpicref);
 }
 
+static int activate(AVFilterContext *ctx)
+{
+    AVFilterLink *inlink = ctx->inputs[0];
+    AVFilterLink *outlink = ctx->outputs[0];
+    AudioBitScopeContext *s = ctx->priv;
+    AVFrame *in;
+    int ret;
+
+    FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
+
+    ret = ff_inlink_consume_samples(inlink, s->nb_samples, s->nb_samples, &in);
+    if (ret < 0)
+        return ret;
+    if (ret > 0)
+        return filter_frame(inlink, in);
+
+    FF_FILTER_FORWARD_STATUS(inlink, outlink);
+    FF_FILTER_FORWARD_WANTED(outlink, inlink);
+
+    return FFERROR_NOT_READY;
+}
+
 static const AVFilterPad inputs[] = {
     {
         .name         = "default",
         .type         = AVMEDIA_TYPE_AUDIO,
         .config_props = config_input,
-        .filter_frame = filter_frame,
     },
     { NULL }
 };
@@ -241,12 +261,13 @@ static const AVFilterPad outputs[] = {
     { NULL }
 };
 
-AVFilter ff_avf_abitscope = {
+const AVFilter ff_avf_abitscope = {
     .name          = "abitscope",
     .description   = NULL_IF_CONFIG_SMALL("Convert input audio to audio bit scope video output."),
     .query_formats = query_formats,
     .priv_size     = sizeof(AudioBitScopeContext),
     .inputs        = inputs,
     .outputs       = outputs,
+    .activate      = activate,
     .priv_class    = &abitscope_class,
 };