lavc/pngdec: remove unnecessary context variables

[ffmpeg] / libavcodec / opusenc_psy.c

diff --git a/libavcodec/opusenc_psy.c b/libavcodec/opusenc_psy.c
index 5393c9d7deaba9fa57b3cc66fc8b84f1637c0471..5a50db942f731bbd9fed664b11aa2cba0ed87c02 100644 (file)
--- a/libavcodec/opusenc_psy.c
+++ b/libavcodec/opusenc_psy.c
@@ -119,7 +119,7 @@ static void step_collect_psy_metrics(OpusPsyContext *s, int index)
 
             for (j = 0; j < range; j++) {
                 const float c_s = coeffs[j]*coeffs[j];
-                dist_dev = (avg_c_s - c_s)*(avg_c_s - c_s);
+                dist_dev += (avg_c_s - c_s)*(avg_c_s - c_s);
             }
 
             st->tone[ch][i] += sqrtf(dist_dev);
@@ -366,7 +366,7 @@ static int bands_dist(OpusPsyContext *s, CeltFrame *f, float *total_dist)
     OpusRangeCoder dump;
 
     ff_opus_rc_enc_init(&dump);
-    ff_celt_enc_bitalloc(f, &dump);
+    ff_celt_bitalloc(f, &dump, 1);
 
     for (i = 0; i < CELT_MAX_BANDS; i++) {
         float bits = 0.0f;
@@ -383,6 +383,10 @@ static void celt_search_for_dual_stereo(OpusPsyContext *s, CeltFrame *f)
 {
     float td1, td2;
     f->dual_stereo = 0;
+
+    if (s->avctx->channels < 2)
+        return;
+
     bands_dist(s, f, &td1);
     f->dual_stereo = 1;
     bands_dist(s, f, &td2);
@@ -395,10 +399,12 @@ static void celt_search_for_intensity(OpusPsyContext *s, CeltFrame *f)
 {
     int i, best_band = CELT_MAX_BANDS - 1;
     float dist, best_dist = FLT_MAX;
-
     /* TODO: fix, make some heuristic up here using the lambda value */
     float end_band = 0;
 
+    if (s->avctx->channels < 2)
+        return;
+
     for (i = f->end_band; i >= end_band; i--) {
         f->intensity_stereo = i;
         bands_dist(s, f, &dist);