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@ -37,6 +37,16 @@ typedef struct { |
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float lhist[10]; |
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} Real288_internal; |
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static inline float scalar_product_float(float * v1, float * v2, int size) |
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{ |
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float res = 0.; |
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while (size--) |
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res += *v1++ * *v2++; |
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return res; |
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} |
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/* Decode and produce output */ |
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static void decode(Real288_internal *glob, float gain, int cb_coef) |
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{ |
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@ -48,19 +58,11 @@ static void decode(Real288_internal *glob, float gain, int cb_coef) |
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glob->sb[x+5] = glob->sb[x]; |
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for (x=4; x >= 0; x--) { |
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float *p1 = glob->sb+x; |
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float *p2 = glob->pr1; |
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sum = 0; |
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for (y=0; y < 36; y++) |
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sum -= (*(++p1))*(*(p2++)); |
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glob->sb[x] = sum; |
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glob->sb[x] = -scalar_product_float(glob->sb + x + 1, glob->pr1, 36); |
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} |
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/* convert log and do rms */ |
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sum = 32; |
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for (x=0; x < 10; x++) |
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sum -= glob->pr2[x] * glob->lhist[x]; |
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sum = 32. - scalar_product_float(glob->pr2, glob->lhist, 10); |
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if (sum < 0) |
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sum = 0; |
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@ -148,17 +150,9 @@ static int pred(float *in, float *tgt, int n) |
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/* product sum (lsf) */ |
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static void prodsum(float *tgt, float *src, int len, int n) |
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{ |
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unsigned int x; |
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double sum; |
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for (; n >= 0; n--) |
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tgt[n] = scalar_product_float(src, src - n, len); |
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while (n >= 0) { |
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float *p2 = src; |
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float *p1 = p2 - n; |
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sum = 0; |
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for (x=0; x < len; x++) |
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sum += (*p1++) * (*p2++); |
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tgt[n--] = sum; |
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} |
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} |
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static void co(int n, int i, int j, float *in, float *out, float *st1, |
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