X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fdolby_e.h;h=ae04bf699ce75e556188430c889713f28bc6bb8a;hb=b9dc000679c55ff2c013bdea17b2235228b1ac3f;hp=0390233720e1b0db9cca72bb5ac4a2b2b49c5545;hpb=24204eae1c7dba402d88f0cd3077814dbb7f9376;p=ffmpeg diff --git a/libavcodec/dolby_e.h b/libavcodec/dolby_e.h index 0390233720e..ae04bf699ce 100644 --- a/libavcodec/dolby_e.h +++ b/libavcodec/dolby_e.h @@ -644,90 +644,4 @@ static float gain_tab[1024]; DECLARE_ALIGNED(32, static float, window)[3712]; -static av_cold void init_tables(void) -{ - int i, j; - - for (i = 1; i < 17; i++) - mantissa_tab1[i][0] = 1.0f / (1 << i - 1); - - for (i = 2; i < 16; i++) { - mantissa_tab1[i][1] = 1.0f / ((1 << i) - 1); - mantissa_tab1[i][2] = 0.5f / ((1 << i) - 1); - mantissa_tab1[i][3] = 0.25f / ((1 << i) - 1); - } - - mantissa_tab1[i][1] = 0.5f / (1 << 15); - mantissa_tab1[i][2] = 0.75f / (1 << 15); - mantissa_tab1[i][3] = 0.875f / (1 << 15); - - for (i = 1; i < 17; i++) { - mantissa_tab2[i][1] = mantissa_tab1[i][0] * 0.5f; - mantissa_tab2[i][2] = mantissa_tab1[i][0] * 0.75f; - mantissa_tab2[i][3] = mantissa_tab1[i][0] * 0.875f; - for (j = 1; j < 4; j++) - mantissa_tab3[i][j] = 1.0f / (1 << i) + 1.0f / (1 << j) - 1.0f / (1 << i + j); - } - - mantissa_tab3[1][3] = 0.6875f; - - for (i = 0; i < 25; i++) { - exponent_tab[i * 2 ] = 1.0f / (1 << i); - exponent_tab[i * 2 + 1] = M_SQRT1_2 / (1 << i); - } - - for (i = 1; i < 1024; i++) - gain_tab[i] = exp2f((i - 960) / 64.0f); - - // short 1 - ff_kbd_window_init(window, 3.0f, 128); - for (i = 0; i < 128; i++) - window[128 + i] = window[127 - i]; - - // start - for (i = 0; i < 192; i++) - window[256 + i] = start_window[i]; - - // short 2 - for (i = 0; i < 192; i++) - window[448 + i] = short_window2[i]; - for (i = 0; i < 64; i++) - window[640 + i] = window[63 - i]; - - // short 3 - for (i = 0; i < 64; i++) - window[704 + i] = short_window3[i]; - for (i = 0; i < 192; i++) - window[768 + i] = window[64 + i]; - - // bridge - for (i = 0; i < 128; i++) - window[960 + i] = window[i]; - for (i = 0; i < 64; i++) - window[1088 + i] = 1.0f; - - // long - ff_kbd_window_init(window + 1408, 3.0f, 256); - for (i = 0; i < 640; i++) - window[1664 + i] = 1.0f; - for (i = 0; i < 256; i++) - window[2304 + i] = window[1152 + i] = window[1663 - i]; - - // reverse start - for (i = 0; i < 192; i++) - window[2560 + i] = window[447 - i]; - - // reverse short 2 - for (i = 0; i < 256; i++) - window[2752 + i] = window[703 - i]; - - // reverse short 3 - for (i = 0; i < 256; i++) - window[3008 + i] = window[959 - i]; - - // reverse bridge - for (i = 0; i < 448; i++) - window[3264 + i] = window[1407 - i]; -} - #endif