avcodec/takdec: add code that got somehow lost in process of REing

[ffmpeg] / libavcodec / aacpsy.c

diff --git a/libavcodec/aacpsy.c b/libavcodec/aacpsy.c
index 0898bafd24172b5522fdc8c12613cd454e9731c6..9644db17c3ec7342bcacc256c5ccc617d524cd53 100644 (file)
--- a/libavcodec/aacpsy.c
+++ b/libavcodec/aacpsy.c
@@ -685,7 +685,7 @@ static void psy_3gpp_analyze_channel(FFPsyContext *ctx, int channel,
 
             band->thr_quiet = band->thr = FFMAX(band->thr, coeffs[g].ath);
             //5.4.2.5 "Pre-echo control"
-            if (!(wi->window_type[0] == LONG_STOP_SEQUENCE || (wi->window_type[1] == LONG_START_SEQUENCE && !w)))
+            if (!(wi->window_type[0] == LONG_STOP_SEQUENCE || (!w && wi->window_type[1] == LONG_START_SEQUENCE)))
                 band->thr = FFMAX(PSY_3GPP_RPEMIN*band->thr, FFMIN(band->thr,
                                   PSY_3GPP_RPELEV*pch->prev_band[w+g].thr_quiet));
 
@@ -891,7 +891,7 @@ static FFPsyWindowInfo psy_lame_window(FFPsyContext *ctx, const float *audio,
 
     if (la) {
         float hpfsmpl[AAC_BLOCK_SIZE_LONG];
-        float const *pf = hpfsmpl;
+        const float *pf = hpfsmpl;
         float attack_intensity[(AAC_NUM_BLOCKS_SHORT + 1) * PSY_LAME_NUM_SUBBLOCKS];
         float energy_subshort[(AAC_NUM_BLOCKS_SHORT + 1) * PSY_LAME_NUM_SUBBLOCKS];
         float energy_short[AAC_NUM_BLOCKS_SHORT + 1] = { 0 };
@@ -910,7 +910,7 @@ static FFPsyWindowInfo psy_lame_window(FFPsyContext *ctx, const float *audio,
         }
 
         for (i = 0; i < AAC_NUM_BLOCKS_SHORT * PSY_LAME_NUM_SUBBLOCKS; i++) {
-            float const *const pfe = pf + AAC_BLOCK_SIZE_LONG / (AAC_NUM_BLOCKS_SHORT * PSY_LAME_NUM_SUBBLOCKS);
+            const float *const pfe = pf + AAC_BLOCK_SIZE_LONG / (AAC_NUM_BLOCKS_SHORT * PSY_LAME_NUM_SUBBLOCKS);
             float p = 1.0f;
             for (; pf < pfe; pf++)
                 p = FFMAX(p, fabsf(*pf));
@@ -943,9 +943,9 @@ static FFPsyWindowInfo psy_lame_window(FFPsyContext *ctx, const float *audio,
         /* GB: tuned (1) to avoid too many short blocks for test sample TRUMPET */
         /* RH: tuned (2) to let enough short blocks through for test sample FSOL and SNAPS */
         for (i = 1; i < AAC_NUM_BLOCKS_SHORT + 1; i++) {
-            float const u = energy_short[i - 1];
-            float const v = energy_short[i];
-            float const m = FFMAX(u, v);
+            const float u = energy_short[i - 1];
+            const float v = energy_short[i];
+            const float m = FFMAX(u, v);
             if (m < 40000) {                          /* (2) */
                 if (u < 1.7f * v && v < 1.7f * u) {   /* (1) */
                     if (i == 1 && attacks[0] < attacks[i])
@@ -975,21 +975,6 @@ static FFPsyWindowInfo psy_lame_window(FFPsyContext *ctx, const float *audio,
 
     lame_apply_block_type(pch, &wi, uselongblock);
 
-    /* Calculate input sample maximums and evaluate clipping risk */
-    if (audio) {
-        for (i = 0; i < AAC_NUM_BLOCKS_SHORT; i++) {
-            const float *wbuf = audio + i * AAC_BLOCK_SIZE_SHORT;
-            float max = 0;
-            int j;
-            for (j = 0; j < AAC_BLOCK_SIZE_SHORT; j++)
-                max = FFMAX(max, fabsf(wbuf[j]));
-            clippings[i] = max;
-        }
-    } else {
-        for (i = 0; i < 8; i++)
-            clippings[i] = 0;
-    }
-
     wi.window_type[1] = prev_type;
     if (wi.window_type[0] != EIGHT_SHORT_SEQUENCE) {
         float clipping = 0.0f;
@@ -1018,9 +1003,10 @@ static FFPsyWindowInfo psy_lame_window(FFPsyContext *ctx, const float *audio,
         for (i = 0; i < 8; i += wi.grouping[i]) {
             int w;
             float clipping = 0.0f;
-            for (w = 0; w < wi.grouping[i] && !clipping; w++)
+            for (w = 0; w < wi.grouping[i]; w++)
                 clipping = FFMAX(clipping, clippings[i+w]);
-            wi.clipping[i] = clipping;
+            for (w = 0; w < wi.grouping[i]; w++)
+                wi.clipping[i+w] = clipping;
         }
     }