Allow a SIPR table to be used by the upcoming SIPR16k decoder

[ffmpeg] / libavcodec / acelp_vectors.c

diff --git a/libavcodec/acelp_vectors.c b/libavcodec/acelp_vectors.c
index 2d9aa1ad79588d8842b60e4561dc4e7f985bba66..0b478b787b9b0e2748c80b1936a3bf02877b0248 100644 (file)
--- a/libavcodec/acelp_vectors.c
+++ b/libavcodec/acelp_vectors.c
@@ -103,6 +103,35 @@ static uint8_t gray_decode[32] =
 };
 #endif
 
+const float ff_pow_0_7[10] = {
+    0.700000, 0.490000, 0.343000, 0.240100, 0.168070,
+    0.117649, 0.082354, 0.057648, 0.040354, 0.028248
+};
+
+const float ff_pow_0_75[10] = {
+    0.750000, 0.562500, 0.421875, 0.316406, 0.237305,
+    0.177979, 0.133484, 0.100113, 0.075085, 0.056314
+};
+
+const float ff_pow_0_55[10] = {
+    0.550000, 0.302500, 0.166375, 0.091506, 0.050328,
+    0.027681, 0.015224, 0.008373, 0.004605, 0.002533
+};
+
+const float ff_b60_sinc[61] = {
+ 0.898529  ,  0.865051  ,  0.769257  ,  0.624054  ,  0.448639  ,  0.265289   ,
+ 0.0959167 , -0.0412598 , -0.134338  , -0.178986  , -0.178528  , -0.142609   ,
+-0.0849304 , -0.0205078 ,  0.0369568 ,  0.0773926 ,  0.0955200 ,  0.0912781  ,
+ 0.0689392 ,  0.0357056 ,  0.        , -0.0305481 , -0.0504150 , -0.0570068  ,
+-0.0508423 , -0.0350037 , -0.0141602 ,  0.00665283,  0.0230713 ,  0.0323486  ,
+ 0.0335388 ,  0.0275879 ,  0.0167847 ,  0.00411987, -0.00747681, -0.0156860  ,
+-0.0193481 , -0.0183716 , -0.0137634 , -0.00704956,  0.        ,  0.00582886 ,
+ 0.00939941,  0.0103760 ,  0.00903320,  0.00604248,  0.00238037, -0.00109863 ,
+-0.00366211, -0.00497437, -0.00503540, -0.00402832, -0.00241089, -0.000579834,
+ 0.00103760,  0.00222778,  0.00277710,  0.00271606,  0.00213623,  0.00115967 ,
+ 0.
+};
+
 void ff_acelp_fc_pulse_per_track(
         int16_t* fc_v,
         const uint8_t *tab1,
@@ -127,6 +156,26 @@ void ff_acelp_fc_pulse_per_track(
     fc_v[tab2[pulse_indexes]] += (pulse_signs & 1) ? 8191 : -8192;
 }
 
+void ff_decode_10_pulses_35bits(const int16_t *fixed_index,
+                                AMRFixed *fixed_sparse,
+                                const uint8_t *gray_decode,
+                                int half_pulse_count, int bits)
+{
+    int i;
+    int mask = (1 << bits) - 1;
+
+    fixed_sparse->n = 2 * half_pulse_count;
+    for (i = 0; i < half_pulse_count; i++) {
+        const int pos1   = gray_decode[fixed_index[2*i+1] & mask] + i;
+        const int pos2   = gray_decode[fixed_index[2*i  ] & mask] + i;
+        const float sign = (fixed_index[2*i+1] & (1 << bits)) ? -1.0 : 1.0;
+        fixed_sparse->x[2*i+1] = pos1;
+        fixed_sparse->x[2*i  ] = pos2;
+        fixed_sparse->y[2*i+1] = sign;
+        fixed_sparse->y[2*i  ] = pos2 < pos1 ? -sign : sign;
+    }
+}
+
 void ff_acelp_weighted_vector_sum(
         int16_t* out,
         const int16_t *in_a,
@@ -177,3 +226,48 @@ void ff_adaptative_gain_control(float *buf_out, float speech_energ,
 
     *gain_mem = mem;
 }
+
+void ff_scale_vector_to_given_sum_of_squares(float *out, const float *in,
+                                             float sum_of_squares, const int n)
+{
+    int i;
+    float scalefactor = ff_dot_productf(in, in, n);
+    if (scalefactor)
+        scalefactor = sqrt(sum_of_squares / scalefactor);
+    for (i = 0; i < n; i++)
+        out[i] = in[i] * scalefactor;
+}
+
+void ff_set_fixed_vector(float *out, const AMRFixed *in, float scale, int size)
+{
+    int i;
+
+    for (i=0; i < in->n; i++) {
+        int x   = in->x[i];
+        float y = in->y[i] * scale;
+        out[x] += y;
+
+        x += in->pitch_lag;
+        while (x < size) {
+            y *= in->pitch_fac;
+            out[x] += y;
+            x += in->pitch_lag;
+        }
+    }
+}
+
+void ff_clear_fixed_vector(float *out, const AMRFixed *in, int size)
+{
+    int i;
+
+    for (i=0; i < in->n; i++) {
+        int x  = in->x[i];
+        out[x] = 0.0;
+
+        x += in->pitch_lag;
+        while (x < size) {
+            out[x] = 0.0;
+            x += in->pitch_lag;
+        }
+    }
+}