52,47,43,37,29,22,16,0,
};
-static const float dither_tab[8] = {
- 0.0, 0.0, 0.0, 0.0, 0.0, 0.176777, 0.25, 0.707107,
+static const float dither_tab[9] = {
+ 0.0, 0.0, 0.0, 0.0, 0.0, 0.176777, 0.25, 0.707107, 1.0
};
static const float quant_centroid_tab[7][14] = {
19,
};
-static const float cplscale2[3] = {
+// The 1 and 0 at the beginning/end are to prevent overflows with
+// bitstream-read indexes. E.g. if n_bits=5, we can access any
+// index from [1, (1<<n_bits)] for the first decoupling coeff,
+// and (1<<n_bits)-coeff1 as index for coeff2, i.e.:
+// coeff1_idx = [1, 32], and coeff2_idx = [0, 31].
+// These values aren't part of the tables in the original binary.
+
+static const float cplscale2[5] = {
+1,
0.953020632266998,0.70710676908493,0.302905440330505,
+0,
};
-static const float cplscale3[7] = {
+static const float cplscale3[9] = {
+1,
0.981279790401459,0.936997592449188,0.875934481620789,0.70710676908493,
0.482430040836334,0.349335819482803,0.192587479948997,
+0,
};
-static const float cplscale4[15] = {
+static const float cplscale4[17] = {
+1,
0.991486728191376,0.973249018192291,0.953020632266998,0.930133521556854,
0.903453230857849,0.870746195316315,0.826180458068848,0.70710676908493,
0.563405573368073,0.491732746362686,0.428686618804932,0.367221474647522,
0.302905440330505,0.229752898216248,0.130207896232605,
+0,
};
-static const float cplscale5[31] = {
+static const float cplscale5[33] = {
+1,
0.995926380157471,0.987517595291138,0.978726446628571,0.969505727291107,
0.95979779958725,0.949531257152557,0.938616216182709,0.926936149597168,
0.914336204528809,0.900602877140045,0.885426938533783,0.868331849575043,
0.464778542518616,0.434642940759659,0.404955863952637,0.375219136476517,
0.344963222742081,0.313672333955765,0.280692428350449,0.245068684220314,
0.205169528722763,0.157508864998817,0.0901700109243393,
+0,
};
-static const float cplscale6[63] = {
+static const float cplscale6[65] = {
+1,
0.998005926609039,0.993956744670868,0.989822506904602,0.985598564147949,
0.981279790401459,0.976860702037811,0.972335040569305,0.967696130275726,
0.962936460971832,0.958047747612000,0.953020632266998,0.947844684123993,
0.302905440330505,0.286608695983887,0.269728302955627,0.252119421958923,
0.233590632677078,0.213876649737358,0.192587479948997,0.169101938605309,
0.142307326197624,0.109772264957428,0.0631198287010193,
+0,
};
static const float* const cplscales[5] = {