vorbisenc: Stop tracking number of samples per frame

[ffmpeg] / libavcodec / g723_1dec.c

diff --git a/libavcodec/g723_1dec.c b/libavcodec/g723_1dec.c
index e9896b5e7af2814c0628b9dc4a16b32ed34510d0..c8202a937c4f85afd055c0a870fca243de1db576 100644 (file)
--- a/libavcodec/g723_1dec.c
+++ b/libavcodec/g723_1dec.c
@@ -488,7 +488,7 @@ static void residual_interp(int16_t *buf, int16_t *out, int lag,
                           (FRAME_LEN - lag) * sizeof(*out));
     } else {  /* Unvoiced */
         for (i = 0; i < FRAME_LEN; i++) {
-            *rseed = *rseed * 521 + 259;
+            *rseed = (int16_t)(*rseed * 521 + 259);
             out[i] = gain * *rseed >> 15;
         }
         memset(buf, 0, (FRAME_LEN + PITCH_MAX) * sizeof(*buf));
@@ -517,7 +517,7 @@ static void residual_interp(int16_t *buf, int16_t *out, int lag,
                       (iir_coef)[n - 1] * ((dest)[m - n] >> in_shift);\
         }\
 \
-        (dest)[m] = av_clipl_int32(((src)[m] << 16) + (filter << 3) +\
+        (dest)[m] = av_clipl_int32(((src)[m] * 65536) + (filter * 8) +\
                                    (1 << 15)) >> res_shift;\
     }\
 }
@@ -660,11 +660,17 @@ static int estimate_sid_gain(G723_1_Context *p)
     int i, shift, seg, seg2, t, val, val_add, x, y;
 
     shift = 16 - p->cur_gain * 2;
-    if (shift > 0)
-        t = p->sid_gain << shift;
-    else
+    if (shift > 0) {
+        if (p->sid_gain == 0) {
+            t = 0;
+        } else if (shift >= 31 || (int32_t)((uint32_t)p->sid_gain << shift) >> shift != p->sid_gain) {
+            if (p->sid_gain < 0) t = INT32_MIN;
+            else                 t = INT32_MAX;
+        } else
+            t = p->sid_gain << shift;
+    }else
         t = p->sid_gain >> -shift;
-    x = t * cng_filt[0] >> 16;
+    x = av_clipl_int32(t * (int64_t)cng_filt[0] >> 16);
 
     if (x >= cng_bseg[2])
         return 0x3F;
@@ -695,13 +701,13 @@ static int estimate_sid_gain(G723_1_Context *p)
     if (y <= 0) {
         t = seg * 32 + (val + 1 << seg2);
         t = t * t - x;
-        val = (seg2 - 1 << 4) + val;
+        val = (seg2 - 1) * 16 + val;
         if (t >= y)
             val++;
     } else {
         t = seg * 32 + (val - 1 << seg2);
         t = t * t - x;
-        val = (seg2 - 1 << 4) + val;
+        val = (seg2 - 1) * 16 + val;
         if (t >= y)
             val--;
     }
@@ -733,7 +739,7 @@ static void generate_noise(G723_1_Context *p)
         off[i * 2 + 1] = ((t >> 1) & 1) + SUBFRAME_LEN;
         t >>= 2;
         for (j = 0; j < 11; j++) {
-            signs[i * 11 + j] = (t & 1) * 2 - 1 << 14;
+            signs[i * 11 + j] = ((t & 1) * 2 - 1)  * (1 << 14);
             t >>= 1;
         }
     }
@@ -777,7 +783,7 @@ static void generate_noise(G723_1_Context *p)
         sum = 0;
         if (shift < 0) {
            for (j = 0; j < SUBFRAME_LEN * 2; j++) {
-               t      = vector_ptr[j] << -shift;
+               t      = vector_ptr[j] * (1 << -shift);
                sum   += t * t;
                tmp[j] = t;
            }
@@ -815,7 +821,7 @@ static void generate_noise(G723_1_Context *p)
         if (shift < 0)
            x >>= -shift;
         else
-           x <<= shift;
+           x *= 1 << shift;
         x = av_clip(x, -10000, 10000);
 
         for (j = 0; j < 11; j++) {
@@ -904,7 +910,7 @@ static int g723_1_decode_frame(AVCodecContext *avctx, void *data,
                                              &p->subframe[i], p->cur_rate);
                 /* Get the total excitation */
                 for (j = 0; j < SUBFRAME_LEN; j++) {
-                    int v = av_clip_int16(vector_ptr[j] << 1);
+                    int v = av_clip_int16(vector_ptr[j] * 2);
                     vector_ptr[j] = av_clip_int16(v + acb_vector[j]);
                 }
                 vector_ptr += SUBFRAME_LEN;