1111 lines
38 KiB
C
1111 lines
38 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include <math.h>
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#include "vpx_ports/config.h"
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#include "vp8/common/idct.h"
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#include "vp8/common/systemdependent.h"
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#include "vp8/common/blockd.h"
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// TODO: these transforms can be converted into integer forms to reduce
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// the complexity
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float dct_4[16] = {
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0.500000000000000, 0.500000000000000, 0.500000000000000, 0.500000000000000,
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0.653281482438188, 0.270598050073099, -0.270598050073099, -0.653281482438188,
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0.500000000000000, -0.500000000000000, -0.500000000000000, 0.500000000000000,
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0.270598050073099, -0.653281482438188, 0.653281482438188, -0.270598050073099
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};
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float adst_4[16] = {
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0.228013428883779, 0.428525073124360, 0.577350269189626, 0.656538502008139,
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0.577350269189626, 0.577350269189626, 0.000000000000000, -0.577350269189626,
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0.656538502008139, -0.228013428883779, -0.577350269189626, 0.428525073124359,
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0.428525073124360, -0.656538502008139, 0.577350269189626, -0.228013428883779
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};
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float dct_8[64] = {
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0.353553390593274, 0.353553390593274, 0.353553390593274, 0.353553390593274,
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0.353553390593274, 0.353553390593274, 0.353553390593274, 0.353553390593274,
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0.490392640201615, 0.415734806151273, 0.277785116509801, 0.097545161008064,
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-0.097545161008064, -0.277785116509801, -0.415734806151273, -0.490392640201615,
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0.461939766255643, 0.191341716182545, -0.191341716182545, -0.461939766255643,
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-0.461939766255643, -0.191341716182545, 0.191341716182545, 0.461939766255643,
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0.415734806151273, -0.097545161008064, -0.490392640201615, -0.277785116509801,
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0.277785116509801, 0.490392640201615, 0.097545161008064, -0.415734806151273,
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0.353553390593274, -0.353553390593274, -0.353553390593274, 0.353553390593274,
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0.353553390593274, -0.353553390593274, -0.353553390593274, 0.353553390593274,
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0.277785116509801, -0.490392640201615, 0.097545161008064, 0.415734806151273,
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-0.415734806151273, -0.097545161008064, 0.490392640201615, -0.277785116509801,
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0.191341716182545, -0.461939766255643, 0.461939766255643, -0.191341716182545,
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-0.191341716182545, 0.461939766255643, -0.461939766255643, 0.191341716182545,
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0.097545161008064, -0.277785116509801, 0.415734806151273, -0.490392640201615,
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0.490392640201615, -0.415734806151273, 0.277785116509801, -0.097545161008064
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};
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float adst_8[64] = {
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0.089131608307533, 0.175227946595735, 0.255357107325376, 0.326790388032145,
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0.387095214016349, 0.434217976756762, 0.466553967085785, 0.483002021635509,
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0.255357107325376, 0.434217976756762, 0.483002021635509, 0.387095214016349,
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0.175227946595735, -0.089131608307533, -0.326790388032145, -0.466553967085785,
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0.387095214016349, 0.466553967085785, 0.175227946595735, -0.255357107325376,
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-0.483002021635509, -0.326790388032145, 0.089131608307533, 0.434217976756762,
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0.466553967085785, 0.255357107325376, -0.326790388032145, -0.434217976756762,
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0.089131608307533, 0.483002021635509, 0.175227946595735, -0.387095214016348,
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0.483002021635509, -0.089131608307533, -0.466553967085785, 0.175227946595735,
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0.434217976756762, -0.255357107325376, -0.387095214016348, 0.326790388032145,
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0.434217976756762, -0.387095214016348, -0.089131608307533, 0.466553967085786,
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-0.326790388032145, -0.175227946595735, 0.483002021635509, -0.255357107325375,
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0.326790388032145, -0.483002021635509, 0.387095214016349, -0.089131608307534,
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-0.255357107325377, 0.466553967085785, -0.434217976756762, 0.175227946595736,
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0.175227946595735, -0.326790388032145, 0.434217976756762, -0.483002021635509,
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0.466553967085785, -0.387095214016348, 0.255357107325376, -0.089131608307532
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};
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/* Converted the transforms to integers. */
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const int16_t dct_i4[16] = {
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16384, 16384, 16384, 16384,
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21407, 8867, -8867, -21407,
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16384, -16384, -16384, 16384,
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8867, -21407, 21407, -8867
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};
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const int16_t adst_i4[16] = {
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7472, 14042, 18919, 21513,
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18919, 18919, 0, -18919,
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21513, -7472, -18919, 14042,
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14042, -21513, 18919, -7472
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};
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const int16_t dct_i8[64] = {
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11585, 11585, 11585, 11585,
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11585, 11585, 11585, 11585,
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16069, 13623, 9102, 3196,
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-3196, -9102, -13623, -16069,
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15137, 6270, -6270, -15137,
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-15137, -6270, 6270, 15137,
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13623, -3196, -16069, -9102,
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9102, 16069, 3196, -13623,
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11585, -11585, -11585, 11585,
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11585, -11585, -11585, 11585,
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9102, -16069, 3196, 13623,
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-13623, -3196, 16069, -9102,
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6270, -15137, 15137, -6270,
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-6270, 15137, -15137, 6270,
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3196, -9102, 13623, -16069,
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16069, -13623, 9102, -3196
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};
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const int16_t adst_i8[64] = {
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2921, 5742, 8368, 10708,
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12684, 14228, 15288, 15827,
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8368, 14228, 15827, 12684,
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5742, -2921, -10708, -15288,
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12684, 15288, 5742, -8368,
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-15827, -10708, 2921, 14228,
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15288, 8368, -10708, -14228,
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2921, 15827, 5742, -12684,
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15827, -2921, -15288, 5742,
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14228, -8368, -12684, 10708,
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14228, -12684, -2921, 15288,
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-10708, -5742, 15827, -8368,
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10708, -15827, 12684, -2921,
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-8368, 15288, -14228, 5742,
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5742, -10708, 14228, -15827,
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15288, -12684, 8368, -2921
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};
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float dct_16[256] = {
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0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000,
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0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000,
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0.351851, 0.338330, 0.311806, 0.273300, 0.224292, 0.166664, 0.102631, 0.034654,
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-0.034654, -0.102631, -0.166664, -0.224292, -0.273300, -0.311806, -0.338330, -0.351851,
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0.346760, 0.293969, 0.196424, 0.068975, -0.068975, -0.196424, -0.293969, -0.346760,
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-0.346760, -0.293969, -0.196424, -0.068975, 0.068975, 0.196424, 0.293969, 0.346760,
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0.338330, 0.224292, 0.034654, -0.166664, -0.311806, -0.351851, -0.273300, -0.102631,
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0.102631, 0.273300, 0.351851, 0.311806, 0.166664, -0.034654, -0.224292, -0.338330,
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0.326641, 0.135299, -0.135299, -0.326641, -0.326641, -0.135299, 0.135299, 0.326641,
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0.326641, 0.135299, -0.135299, -0.326641, -0.326641, -0.135299, 0.135299, 0.326641,
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0.311806, 0.034654, -0.273300, -0.338330, -0.102631, 0.224292, 0.351851, 0.166664,
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-0.166664, -0.351851, -0.224292, 0.102631, 0.338330, 0.273300, -0.034654, -0.311806,
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0.293969, -0.068975, -0.346760, -0.196424, 0.196424, 0.346760, 0.068975, -0.293969,
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-0.293969, 0.068975, 0.346760, 0.196424, -0.196424, -0.346760, -0.068975, 0.293969,
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0.273300, -0.166664, -0.338330, 0.034654, 0.351851, 0.102631, -0.311806, -0.224292,
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0.224292, 0.311806, -0.102631, -0.351851, -0.034654, 0.338330, 0.166664, -0.273300,
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0.250000, -0.250000, -0.250000, 0.250000, 0.250000, -0.250000, -0.250000, 0.250000,
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0.250000, -0.250000, -0.250000, 0.250000, 0.250000, -0.250000, -0.250000, 0.250000,
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0.224292, -0.311806, -0.102631, 0.351851, -0.034654, -0.338330, 0.166664, 0.273300,
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-0.273300, -0.166664, 0.338330, 0.034654, -0.351851, 0.102631, 0.311806, -0.224292,
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0.196424, -0.346760, 0.068975, 0.293969, -0.293969, -0.068975, 0.346760, -0.196424,
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-0.196424, 0.346760, -0.068975, -0.293969, 0.293969, 0.068975, -0.346760, 0.196424,
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0.166664, -0.351851, 0.224292, 0.102631, -0.338330, 0.273300, 0.034654, -0.311806,
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0.311806, -0.034654, -0.273300, 0.338330, -0.102631, -0.224292, 0.351851, -0.166664,
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0.135299, -0.326641, 0.326641, -0.135299, -0.135299, 0.326641, -0.326641, 0.135299,
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0.135299, -0.326641, 0.326641, -0.135299, -0.135299, 0.326641, -0.326641, 0.135299,
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0.102631, -0.273300, 0.351851, -0.311806, 0.166664, 0.034654, -0.224292, 0.338330,
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-0.338330, 0.224292, -0.034654, -0.166664, 0.311806, -0.351851, 0.273300, -0.102631,
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0.068975, -0.196424, 0.293969, -0.346760, 0.346760, -0.293969, 0.196424, -0.068975,
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-0.068975, 0.196424, -0.293969, 0.346760, -0.346760, 0.293969, -0.196424, 0.068975,
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0.034654, -0.102631, 0.166664, -0.224292, 0.273300, -0.311806, 0.338330, -0.351851,
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0.351851, -0.338330, 0.311806, -0.273300, 0.224292, -0.166664, 0.102631, -0.034654
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};
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float adst_16[256] = {
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0.033094, 0.065889, 0.098087, 0.129396, 0.159534, 0.188227, 0.215215, 0.240255,
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0.263118, 0.283599, 0.301511, 0.316693, 0.329007, 0.338341, 0.344612, 0.347761,
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0.098087, 0.188227, 0.263118, 0.316693, 0.344612, 0.344612, 0.316693, 0.263118,
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0.188227, 0.098087, 0.000000, -0.098087, -0.188227, -0.263118, -0.316693, -0.344612,
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0.159534, 0.283599, 0.344612, 0.329007, 0.240255, 0.098087, -0.065889, -0.215215,
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-0.316693, -0.347761, -0.301511, -0.188227, -0.033094, 0.129396, 0.263118, 0.338341,
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0.215215, 0.338341, 0.316693, 0.159534, -0.065889, -0.263118, -0.347761, -0.283599,
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-0.098087, 0.129396, 0.301511, 0.344612, 0.240255, 0.033094, -0.188227, -0.329007,
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0.263118, 0.344612, 0.188227, -0.098087, -0.316693, -0.316693, -0.098087, 0.188227,
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0.344612, 0.263118, 0.000000, -0.263118, -0.344612, -0.188227, 0.098087, 0.316693,
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0.301511, 0.301511, 0.000000, -0.301511, -0.301511, -0.000000, 0.301511, 0.301511,
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0.000000, -0.301511, -0.301511, -0.000000, 0.301511, 0.301511, 0.000000, -0.301511,
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0.329007, 0.215215, -0.188227, -0.338341, -0.033094, 0.316693, 0.240255, -0.159534,
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-0.344612, -0.065889, 0.301511, 0.263118, -0.129396, -0.347761, -0.098087, 0.283599,
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0.344612, 0.098087, -0.316693, -0.188227, 0.263118, 0.263118, -0.188227, -0.316693,
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0.098087, 0.344612, 0.000000, -0.344612, -0.098087, 0.316693, 0.188227, -0.263118,
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0.347761, -0.033094, -0.344612, 0.065889, 0.338341, -0.098087, -0.329007, 0.129396,
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0.316693, -0.159534, -0.301511, 0.188227, 0.283599, -0.215215, -0.263118, 0.240255,
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0.338341, -0.159534, -0.263118, 0.283599, 0.129396, -0.344612, 0.033094, 0.329007,
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-0.188227, -0.240255, 0.301511, 0.098087, -0.347761, 0.065889, 0.316693, -0.215215,
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0.316693, -0.263118, -0.098087, 0.344612, -0.188227, -0.188227, 0.344612, -0.098087,
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-0.263118, 0.316693, 0.000000, -0.316693, 0.263118, 0.098087, -0.344612, 0.188227,
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0.283599, -0.329007, 0.098087, 0.215215, -0.347761, 0.188227, 0.129396, -0.338341,
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0.263118, 0.033094, -0.301511, 0.316693, -0.065889, -0.240255, 0.344612, -0.159534,
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0.240255, -0.347761, 0.263118, -0.033094, -0.215215, 0.344612, -0.283599, 0.065889,
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0.188227, -0.338341, 0.301511, -0.098087, -0.159534, 0.329007, -0.316693, 0.129396,
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0.188227, -0.316693, 0.344612, -0.263118, 0.098087, 0.098087, -0.263118, 0.344612,
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-0.316693, 0.188227, 0.000000, -0.188227, 0.316693, -0.344612, 0.263118, -0.098087,
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0.129396, -0.240255, 0.316693, -0.347761, 0.329007, -0.263118, 0.159534, -0.033094,
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-0.098087, 0.215215, -0.301511, 0.344612, -0.338341, 0.283599, -0.188227, 0.065889,
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0.065889, -0.129396, 0.188227, -0.240255, 0.283599, -0.316693, 0.338341, -0.347761,
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0.344612, -0.329007, 0.301511, -0.263118, 0.215215, -0.159534, 0.098087, -0.033094
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};
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/* Converted the transforms to integers. */
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const int16_t dct_i16[256] = {
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8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192,
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8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192,
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11529, 11086, 10217, 8955, 7350, 5461, 3363, 1136,
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-1136, -3363, -5461, -7350, -8955, -10217, -11086, -11529,
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11363, 9633, 6436, 2260, -2260, -6436, -9633, -11363,
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-11363, -9633, -6436, -2260, 2260, 6436, 9633, 11363,
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11086, 7350, 1136, -5461, -10217, -11529, -8955, -3363,
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3363, 8955, 11529, 10217, 5461, -1136, -7350, -11086,
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10703, 4433, -4433, -10703, -10703, -4433, 4433, 10703,
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10703, 4433, -4433, -10703, -10703, -4433, 4433, 10703,
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10217, 1136, -8955, -11086, -3363, 7350, 11529, 5461,
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-5461, -11529, -7350, 3363, 11086, 8955, -1136, -10217,
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9633, -2260, -11363, -6436, 6436, 11363, 2260, -9633,
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-9633, 2260, 11363, 6436, -6436, -11363, -2260, 9633,
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8955, -5461, -11086, 1136, 11529, 3363, -10217, -7350,
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7350, 10217, -3363, -11529, -1136, 11086, 5461, -8955,
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8192, -8192, -8192, 8192, 8192, -8192, -8192, 8192,
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8192, -8192, -8192, 8192, 8192, -8192, -8192, 8192,
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7350, -10217, -3363, 11529, -1136, -11086, 5461, 8955,
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-8955, -5461, 11086, 1136, -11529, 3363, 10217, -7350,
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6436, -11363, 2260, 9633, -9633, -2260, 11363, -6436,
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-6436, 11363, -2260, -9633, 9633, 2260, -11363, 6436,
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5461, -11529, 7350, 3363, -11086, 8955, 1136, -10217,
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10217, -1136, -8955, 11086, -3363, -7350, 11529, -5461,
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4433, -10703, 10703, -4433, -4433, 10703, -10703, 4433,
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4433, -10703, 10703, -4433, -4433, 10703, -10703, 4433,
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3363, -8955, 11529, -10217, 5461, 1136, -7350, 11086,
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-11086, 7350, -1136, -5461, 10217, -11529, 8955, -3363,
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2260, -6436, 9633, -11363, 11363, -9633, 6436, -2260,
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-2260, 6436, -9633, 11363, -11363, 9633, -6436, 2260,
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1136, -3363, 5461, -7350, 8955, -10217, 11086, -11529,
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11529, -11086, 10217, -8955, 7350, -5461, 3363, -1136
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};
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|
|
const int16_t adst_i16[256] = {
|
|
1084, 2159, 3214, 4240, 5228, 6168, 7052, 7873,
|
|
8622, 9293, 9880, 10377, 10781, 11087, 11292, 11395,
|
|
3214, 6168, 8622, 10377, 11292, 11292, 10377, 8622,
|
|
6168, 3214, 0, -3214, -6168, -8622, -10377, -11292,
|
|
5228, 9293, 11292, 10781, 7873, 3214, -2159, -7052,
|
|
-10377, -11395, -9880, -6168, -1084, 4240, 8622, 11087,
|
|
7052, 11087, 10377, 5228, -2159, -8622, -11395, -9293,
|
|
-3214, 4240, 9880, 11292, 7873, 1084, -6168, -10781,
|
|
8622, 11292, 6168, -3214, -10377, -10377, -3214, 6168,
|
|
11292, 8622, 0, -8622, -11292, -6168, 3214, 10377,
|
|
9880, 9880, 0, -9880, -9880, 0, 9880, 9880,
|
|
0, -9880, -9880, 0, 9880, 9880, 0, -9880,
|
|
10781, 7052, -6168, -11087, -1084, 10377, 7873, -5228,
|
|
-11292, -2159, 9880, 8622, -4240, -11395, -3214, 9293,
|
|
11292, 3214, -10377, -6168, 8622, 8622, -6168, -10377,
|
|
3214, 11292, 0, -11292, -3214, 10377, 6168, -8622,
|
|
11395, -1084, -11292, 2159, 11087, -3214, -10781, 4240,
|
|
10377, -5228, -9880, 6168, 9293, -7052, -8622, 7873,
|
|
11087, -5228, -8622, 9293, 4240, -11292, 1084, 10781,
|
|
-6168, -7873, 9880, 3214, -11395, 2159, 10377, -7052,
|
|
10377, -8622, -3214, 11292, -6168, -6168, 11292, -3214,
|
|
-8622, 10377, 0, -10377, 8622, 3214, -11292, 6168,
|
|
9293, -10781, 3214, 7052, -11395, 6168, 4240, -11087,
|
|
8622, 1084, -9880, 10377, -2159, -7873, 11292, -5228,
|
|
7873, -11395, 8622, -1084, -7052, 11292, -9293, 2159,
|
|
6168, -11087, 9880, -3214, -5228, 10781, -10377, 4240,
|
|
6168, -10377, 11292, -8622, 3214, 3214, -8622, 11292,
|
|
-10377, 6168, 0, -6168, 10377, -11292, 8622, -3214,
|
|
4240, -7873, 10377, -11395, 10781, -8622, 5228, -1084,
|
|
-3214, 7052, -9880, 11292, -11087, 9293, -6168, 2159,
|
|
2159, -4240, 6168, -7873, 9293, -10377, 11087, -11395,
|
|
11292, -10781, 9880, -8622, 7052, -5228, 3214, -1084
|
|
};
|
|
|
|
static const int xC1S7 = 16069;
|
|
static const int xC2S6 = 15137;
|
|
static const int xC3S5 = 13623;
|
|
static const int xC4S4 = 11585;
|
|
static const int xC5S3 = 9102;
|
|
static const int xC6S2 = 6270;
|
|
static const int xC7S1 = 3196;
|
|
|
|
#define SHIFT_BITS 14
|
|
#define DOROUND(X) X += (1<<(SHIFT_BITS-1));
|
|
|
|
#define FINAL_SHIFT 3
|
|
#define FINAL_ROUNDING (1<<(FINAL_SHIFT -1))
|
|
#define IN_SHIFT (FINAL_SHIFT+1)
|
|
|
|
|
|
void vp9_short_fdct8x8_c(short *InputData, short *OutputData, int pitch) {
|
|
int loop;
|
|
int short_pitch = pitch >> 1;
|
|
int is07, is12, is34, is56;
|
|
int is0734, is1256;
|
|
int id07, id12, id34, id56;
|
|
int irot_input_x, irot_input_y;
|
|
int icommon_product1; // Re-used product (c4s4 * (s12 - s56))
|
|
int icommon_product2; // Re-used product (c4s4 * (d12 + d56))
|
|
int temp1, temp2; // intermediate variable for computation
|
|
|
|
int InterData[64];
|
|
int *ip = InterData;
|
|
short *op = OutputData;
|
|
|
|
for (loop = 0; loop < 8; loop++) {
|
|
// Pre calculate some common sums and differences.
|
|
is07 = (InputData[0] + InputData[7]) << IN_SHIFT;
|
|
is12 = (InputData[1] + InputData[2]) << IN_SHIFT;
|
|
is34 = (InputData[3] + InputData[4]) << IN_SHIFT;
|
|
is56 = (InputData[5] + InputData[6]) << IN_SHIFT;
|
|
id07 = (InputData[0] - InputData[7]) << IN_SHIFT;
|
|
id12 = (InputData[1] - InputData[2]) << IN_SHIFT;
|
|
id34 = (InputData[3] - InputData[4]) << IN_SHIFT;
|
|
id56 = (InputData[5] - InputData[6]) << IN_SHIFT;
|
|
|
|
is0734 = is07 + is34;
|
|
is1256 = is12 + is56;
|
|
|
|
// Pre-Calculate some common product terms.
|
|
icommon_product1 = xC4S4 * (is12 - is56);
|
|
DOROUND(icommon_product1)
|
|
icommon_product1 >>= SHIFT_BITS;
|
|
|
|
icommon_product2 = xC4S4 * (id12 + id56);
|
|
DOROUND(icommon_product2)
|
|
icommon_product2 >>= SHIFT_BITS;
|
|
|
|
|
|
ip[0] = (xC4S4 * (is0734 + is1256));
|
|
DOROUND(ip[0]);
|
|
ip[0] >>= SHIFT_BITS;
|
|
|
|
ip[4] = (xC4S4 * (is0734 - is1256));
|
|
DOROUND(ip[4]);
|
|
ip[4] >>= SHIFT_BITS;
|
|
|
|
// Define inputs to rotation for outputs 2 and 6
|
|
irot_input_x = id12 - id56;
|
|
irot_input_y = is07 - is34;
|
|
|
|
// Apply rotation for outputs 2 and 6.
|
|
temp1 = xC6S2 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC2S6 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
ip[2] = temp1 + temp2;
|
|
|
|
temp1 = xC6S2 * irot_input_y;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC2S6 * irot_input_x;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
ip[6] = temp1 - temp2;
|
|
|
|
// Define inputs to rotation for outputs 1 and 7
|
|
irot_input_x = icommon_product1 + id07;
|
|
irot_input_y = -(id34 + icommon_product2);
|
|
|
|
// Apply rotation for outputs 1 and 7.
|
|
temp1 = xC1S7 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC7S1 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
ip[1] = temp1 - temp2;
|
|
|
|
temp1 = xC7S1 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC1S7 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
ip[7] = temp1 + temp2;
|
|
|
|
// Define inputs to rotation for outputs 3 and 5
|
|
irot_input_x = id07 - icommon_product1;
|
|
irot_input_y = id34 - icommon_product2;
|
|
|
|
// Apply rotation for outputs 3 and 5.
|
|
temp1 = xC3S5 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC5S3 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
ip[3] = temp1 - temp2;
|
|
|
|
|
|
temp1 = xC5S3 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC3S5 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
ip[5] = temp1 + temp2;
|
|
|
|
// Increment data pointer for next row
|
|
InputData += short_pitch;
|
|
ip += 8;
|
|
}
|
|
|
|
// Performed DCT on rows, now transform the columns
|
|
ip = InterData;
|
|
for (loop = 0; loop < 8; loop++) {
|
|
// Pre calculate some common sums and differences.
|
|
is07 = ip[0 * 8] + ip[7 * 8];
|
|
is12 = ip[1 * 8] + ip[2 * 8];
|
|
is34 = ip[3 * 8] + ip[4 * 8];
|
|
is56 = ip[5 * 8] + ip[6 * 8];
|
|
|
|
id07 = ip[0 * 8] - ip[7 * 8];
|
|
id12 = ip[1 * 8] - ip[2 * 8];
|
|
id34 = ip[3 * 8] - ip[4 * 8];
|
|
id56 = ip[5 * 8] - ip[6 * 8];
|
|
|
|
is0734 = is07 + is34;
|
|
is1256 = is12 + is56;
|
|
|
|
// Pre-Calculate some common product terms
|
|
icommon_product1 = xC4S4 * (is12 - is56);
|
|
icommon_product2 = xC4S4 * (id12 + id56);
|
|
DOROUND(icommon_product1)
|
|
DOROUND(icommon_product2)
|
|
icommon_product1 >>= SHIFT_BITS;
|
|
icommon_product2 >>= SHIFT_BITS;
|
|
|
|
|
|
temp1 = xC4S4 * (is0734 + is1256);
|
|
temp2 = xC4S4 * (is0734 - is1256);
|
|
DOROUND(temp1);
|
|
DOROUND(temp2);
|
|
temp1 >>= SHIFT_BITS;
|
|
|
|
temp2 >>= SHIFT_BITS;
|
|
op[0 * 8] = (temp1 + FINAL_ROUNDING) >> FINAL_SHIFT;
|
|
op[4 * 8] = (temp2 + FINAL_ROUNDING) >> FINAL_SHIFT;
|
|
|
|
// Define inputs to rotation for outputs 2 and 6
|
|
irot_input_x = id12 - id56;
|
|
irot_input_y = is07 - is34;
|
|
|
|
// Apply rotation for outputs 2 and 6.
|
|
temp1 = xC6S2 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC2S6 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
op[2 * 8] = (temp1 + temp2 + FINAL_ROUNDING) >> FINAL_SHIFT;
|
|
|
|
temp1 = xC6S2 * irot_input_y;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC2S6 * irot_input_x;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
op[6 * 8] = (temp1 - temp2 + FINAL_ROUNDING) >> FINAL_SHIFT;
|
|
|
|
// Define inputs to rotation for outputs 1 and 7
|
|
irot_input_x = icommon_product1 + id07;
|
|
irot_input_y = -(id34 + icommon_product2);
|
|
|
|
// Apply rotation for outputs 1 and 7.
|
|
temp1 = xC1S7 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC7S1 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
op[1 * 8] = (temp1 - temp2 + FINAL_ROUNDING) >> FINAL_SHIFT;
|
|
|
|
temp1 = xC7S1 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC1S7 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
op[7 * 8] = (temp1 + temp2 + FINAL_ROUNDING) >> FINAL_SHIFT;
|
|
|
|
// Define inputs to rotation for outputs 3 and 5
|
|
irot_input_x = id07 - icommon_product1;
|
|
irot_input_y = id34 - icommon_product2;
|
|
|
|
// Apply rotation for outputs 3 and 5.
|
|
temp1 = xC3S5 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC5S3 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
op[3 * 8] = (temp1 - temp2 + FINAL_ROUNDING) >> FINAL_SHIFT;
|
|
|
|
|
|
temp1 = xC5S3 * irot_input_x;
|
|
DOROUND(temp1);
|
|
temp1 >>= SHIFT_BITS;
|
|
temp2 = xC3S5 * irot_input_y;
|
|
DOROUND(temp2);
|
|
temp2 >>= SHIFT_BITS;
|
|
op[5 * 8] = (temp1 + temp2 + FINAL_ROUNDING) >> FINAL_SHIFT;
|
|
|
|
// Increment data pointer for next column.
|
|
ip++;
|
|
op++;
|
|
}
|
|
}
|
|
|
|
void vp9_short_fhaar2x2_c(short *input, short *output, int pitch) { // pitch = 8
|
|
/* [1 1; 1 -1] orthogonal transform */
|
|
/* use position: 0,1, 4, 8 */
|
|
int i;
|
|
short *ip1 = input;
|
|
short *op1 = output;
|
|
for (i = 0; i < 16; i++) {
|
|
op1[i] = 0;
|
|
}
|
|
|
|
op1[0] = (ip1[0] + ip1[1] + ip1[4] + ip1[8] + 1) >> 1;
|
|
op1[1] = (ip1[0] - ip1[1] + ip1[4] - ip1[8]) >> 1;
|
|
op1[4] = (ip1[0] + ip1[1] - ip1[4] - ip1[8]) >> 1;
|
|
op1[8] = (ip1[0] - ip1[1] - ip1[4] + ip1[8]) >> 1;
|
|
|
|
}
|
|
|
|
/* For test */
|
|
#define TEST_INT 1
|
|
#if TEST_INT
|
|
#define vp9_fht_int_c vp9_fht_c
|
|
#else
|
|
#define vp9_fht_float_c vp9_fht_c
|
|
#endif
|
|
|
|
void vp9_fht_float_c(const int16_t *input, int pitch, int16_t *output,
|
|
TX_TYPE tx_type, int tx_dim) {
|
|
vp8_clear_system_state(); // Make it simd safe : __asm emms;
|
|
{
|
|
int i, j, k;
|
|
float bufa[256], bufb[256]; // buffers are for floating-point test purpose
|
|
// the implementation could be simplified in
|
|
// conjunction with integer transform
|
|
const int16_t *ip = input;
|
|
int16_t *op = output;
|
|
|
|
float *pfa = &bufa[0];
|
|
float *pfb = &bufb[0];
|
|
|
|
// pointers to vertical and horizontal transforms
|
|
float *ptv, *pth;
|
|
|
|
assert(tx_type != DCT_DCT);
|
|
// load and convert residual array into floating-point
|
|
for (j = 0; j < tx_dim; j++) {
|
|
for (i = 0; i < tx_dim; i++) {
|
|
pfa[i] = (float)ip[i];
|
|
}
|
|
pfa += tx_dim;
|
|
ip += pitch / 2;
|
|
}
|
|
|
|
// vertical transformation
|
|
pfa = &bufa[0];
|
|
pfb = &bufb[0];
|
|
|
|
switch (tx_type) {
|
|
case ADST_ADST :
|
|
case ADST_DCT :
|
|
ptv = (tx_dim == 4) ? &adst_4[0] :
|
|
((tx_dim == 8) ? &adst_8[0] : &adst_16[0]);
|
|
break;
|
|
|
|
default :
|
|
ptv = (tx_dim == 4) ? &dct_4[0] :
|
|
((tx_dim == 8) ? &dct_8[0] : &dct_16[0]);
|
|
break;
|
|
}
|
|
|
|
for (j = 0; j < tx_dim; j++) {
|
|
for (i = 0; i < tx_dim; i++) {
|
|
pfb[i] = 0;
|
|
for (k = 0; k < tx_dim; k++) {
|
|
pfb[i] += ptv[k] * pfa[(k * tx_dim)];
|
|
}
|
|
pfa += 1;
|
|
}
|
|
pfb += tx_dim;
|
|
ptv += tx_dim;
|
|
pfa = &bufa[0];
|
|
}
|
|
|
|
// horizontal transformation
|
|
pfa = &bufa[0];
|
|
pfb = &bufb[0];
|
|
|
|
switch (tx_type) {
|
|
case ADST_ADST :
|
|
case DCT_ADST :
|
|
pth = (tx_dim == 4) ? &adst_4[0] :
|
|
((tx_dim == 8) ? &adst_8[0] : &adst_16[0]);
|
|
break;
|
|
|
|
default :
|
|
pth = (tx_dim == 4) ? &dct_4[0] :
|
|
((tx_dim == 8) ? &dct_8[0] : &dct_16[0]);
|
|
break;
|
|
}
|
|
|
|
for (j = 0; j < tx_dim; j++) {
|
|
for (i = 0; i < tx_dim; i++) {
|
|
pfa[i] = 0;
|
|
for (k = 0; k < tx_dim; k++) {
|
|
pfa[i] += pfb[k] * pth[k];
|
|
}
|
|
pth += tx_dim;
|
|
}
|
|
|
|
pfa += tx_dim;
|
|
pfb += tx_dim;
|
|
// pth -= tx_dim * tx_dim;
|
|
|
|
switch (tx_type) {
|
|
case ADST_ADST :
|
|
case DCT_ADST :
|
|
pth = (tx_dim == 4) ? &adst_4[0] :
|
|
((tx_dim == 8) ? &adst_8[0] : &adst_16[0]);
|
|
break;
|
|
|
|
default :
|
|
pth = (tx_dim == 4) ? &dct_4[0] :
|
|
((tx_dim == 8) ? &dct_8[0] : &dct_16[0]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// convert to short integer format and load BLOCKD buffer
|
|
op = output;
|
|
pfa = &bufa[0];
|
|
|
|
for (j = 0; j < tx_dim; j++) {
|
|
for (i = 0; i < tx_dim; i++) {
|
|
op[i] = (pfa[i] > 0 ) ? (int16_t)( 8 * pfa[i] + 0.49) :
|
|
-(int16_t)(- 8 * pfa[i] + 0.49);
|
|
}
|
|
op += tx_dim;
|
|
pfa += tx_dim;
|
|
}
|
|
}
|
|
vp8_clear_system_state(); // Make it simd safe : __asm emms;
|
|
}
|
|
|
|
/* Converted the transforms to integer form. */
|
|
#define VERTICAL_SHIFT 11
|
|
#define VERTICAL_ROUNDING ((1 << (VERTICAL_SHIFT - 1)) - 1)
|
|
#define HORIZONTAL_SHIFT 16
|
|
#define HORIZONTAL_ROUNDING ((1 << (HORIZONTAL_SHIFT - 1)) - 1)
|
|
void vp9_fht_int_c(const int16_t *input, int pitch, int16_t *output,
|
|
TX_TYPE tx_type, int tx_dim) {
|
|
int i, j, k;
|
|
int16_t imbuf[256];
|
|
|
|
const int16_t *ip = input;
|
|
int16_t *op = output;
|
|
int16_t *im = &imbuf[0];
|
|
|
|
/* pointers to vertical and horizontal transforms. */
|
|
const int16_t *ptv = NULL, *pth = NULL;
|
|
|
|
switch (tx_type) {
|
|
case ADST_ADST :
|
|
ptv = pth = (tx_dim == 4) ? &adst_i4[0]
|
|
: ((tx_dim == 8) ? &adst_i8[0]
|
|
: &adst_i16[0]);
|
|
break;
|
|
case ADST_DCT :
|
|
ptv = (tx_dim == 4) ? &adst_i4[0]
|
|
: ((tx_dim == 8) ? &adst_i8[0] : &adst_i16[0]);
|
|
pth = (tx_dim == 4) ? &dct_i4[0]
|
|
: ((tx_dim == 8) ? &dct_i8[0] : &dct_i16[0]);
|
|
break;
|
|
case DCT_ADST :
|
|
ptv = (tx_dim == 4) ? &dct_i4[0]
|
|
: ((tx_dim == 8) ? &dct_i8[0] : &dct_i16[0]);
|
|
pth = (tx_dim == 4) ? &adst_i4[0]
|
|
: ((tx_dim == 8) ? &adst_i8[0] : &adst_i16[0]);
|
|
break;
|
|
case DCT_DCT :
|
|
ptv = pth = (tx_dim == 4) ? &dct_i4[0]
|
|
: ((tx_dim == 8) ? &dct_i8[0] : &dct_i16[0]);
|
|
break;
|
|
default:
|
|
assert(0);
|
|
break;
|
|
}
|
|
|
|
/* vertical transformation */
|
|
for (j = 0; j < tx_dim; j++) {
|
|
for (i = 0; i < tx_dim; i++) {
|
|
int temp = 0;
|
|
|
|
for (k = 0; k < tx_dim; k++) {
|
|
temp += ptv[k] * ip[(k * (pitch >> 1))];
|
|
}
|
|
|
|
im[i] = (int16_t)((temp + VERTICAL_ROUNDING) >> VERTICAL_SHIFT);
|
|
ip++;
|
|
}
|
|
im += tx_dim; // 16
|
|
ptv += tx_dim;
|
|
ip = input;
|
|
}
|
|
|
|
/* horizontal transformation */
|
|
im = &imbuf[0];
|
|
|
|
for (j = 0; j < tx_dim; j++) {
|
|
const int16_t *pthc = pth;
|
|
|
|
for (i = 0; i < tx_dim; i++) {
|
|
int temp = 0;
|
|
|
|
for (k = 0; k < tx_dim; k++) {
|
|
temp += im[k] * pthc[k];
|
|
}
|
|
|
|
op[i] = (int16_t)((temp + HORIZONTAL_ROUNDING) >> HORIZONTAL_SHIFT);
|
|
pthc += tx_dim;
|
|
}
|
|
|
|
im += tx_dim; // 16
|
|
op += tx_dim;
|
|
}
|
|
}
|
|
|
|
void vp9_short_fdct4x4_c(short *input, short *output, int pitch) {
|
|
int i;
|
|
int a1, b1, c1, d1;
|
|
short *ip = input;
|
|
short *op = output;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = ((ip[0] + ip[3]) << 5);
|
|
b1 = ((ip[1] + ip[2]) << 5);
|
|
c1 = ((ip[1] - ip[2]) << 5);
|
|
d1 = ((ip[0] - ip[3]) << 5);
|
|
|
|
op[0] = a1 + b1;
|
|
op[2] = a1 - b1;
|
|
|
|
op[1] = (c1 * 2217 + d1 * 5352 + 14500) >> 12;
|
|
op[3] = (d1 * 2217 - c1 * 5352 + 7500) >> 12;
|
|
|
|
ip += pitch / 2;
|
|
op += 4;
|
|
|
|
}
|
|
ip = output;
|
|
op = output;
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = ip[0] + ip[12];
|
|
b1 = ip[4] + ip[8];
|
|
c1 = ip[4] - ip[8];
|
|
d1 = ip[0] - ip[12];
|
|
|
|
op[0] = (a1 + b1 + 7) >> 4;
|
|
op[8] = (a1 - b1 + 7) >> 4;
|
|
|
|
op[4] = ((c1 * 2217 + d1 * 5352 + 12000) >> 16) + (d1 != 0);
|
|
op[12] = (d1 * 2217 - c1 * 5352 + 51000) >> 16;
|
|
|
|
ip++;
|
|
op++;
|
|
}
|
|
}
|
|
|
|
void vp9_short_fdct8x4_c(short *input, short *output, int pitch)
|
|
{
|
|
vp9_short_fdct4x4_c(input, output, pitch);
|
|
vp9_short_fdct4x4_c(input + 4, output + 16, pitch);
|
|
}
|
|
|
|
void vp9_short_walsh4x4_c(short *input, short *output, int pitch) {
|
|
int i;
|
|
int a1, b1, c1, d1;
|
|
short *ip = input;
|
|
short *op = output;
|
|
int pitch_short = pitch >> 1;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = ip[0 * pitch_short] + ip[3 * pitch_short];
|
|
b1 = ip[1 * pitch_short] + ip[2 * pitch_short];
|
|
c1 = ip[1 * pitch_short] - ip[2 * pitch_short];
|
|
d1 = ip[0 * pitch_short] - ip[3 * pitch_short];
|
|
|
|
op[0] = (a1 + b1 + 1) >> 1;
|
|
op[4] = (c1 + d1) >> 1;
|
|
op[8] = (a1 - b1) >> 1;
|
|
op[12] = (d1 - c1) >> 1;
|
|
|
|
ip++;
|
|
op++;
|
|
}
|
|
ip = output;
|
|
op = output;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = ip[0] + ip[3];
|
|
b1 = ip[1] + ip[2];
|
|
c1 = ip[1] - ip[2];
|
|
d1 = ip[0] - ip[3];
|
|
|
|
op[0] = (a1 + b1 + 1) >> 1;
|
|
op[1] = (c1 + d1) >> 1;
|
|
op[2] = (a1 - b1) >> 1;
|
|
op[3] = (d1 - c1) >> 1;
|
|
|
|
ip += 4;
|
|
op += 4;
|
|
}
|
|
}
|
|
|
|
#if CONFIG_LOSSLESS
|
|
void vp9_short_walsh4x4_lossless_c(short *input, short *output, int pitch) {
|
|
int i;
|
|
int a1, b1, c1, d1;
|
|
short *ip = input;
|
|
short *op = output;
|
|
int pitch_short = pitch >> 1;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = (ip[0 * pitch_short] + ip[3 * pitch_short]) >> Y2_WHT_UPSCALE_FACTOR;
|
|
b1 = (ip[1 * pitch_short] + ip[2 * pitch_short]) >> Y2_WHT_UPSCALE_FACTOR;
|
|
c1 = (ip[1 * pitch_short] - ip[2 * pitch_short]) >> Y2_WHT_UPSCALE_FACTOR;
|
|
d1 = (ip[0 * pitch_short] - ip[3 * pitch_short]) >> Y2_WHT_UPSCALE_FACTOR;
|
|
|
|
op[0] = (a1 + b1 + 1) >> 1;
|
|
op[4] = (c1 + d1) >> 1;
|
|
op[8] = (a1 - b1) >> 1;
|
|
op[12] = (d1 - c1) >> 1;
|
|
|
|
ip++;
|
|
op++;
|
|
}
|
|
ip = output;
|
|
op = output;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = ip[0] + ip[3];
|
|
b1 = ip[1] + ip[2];
|
|
c1 = ip[1] - ip[2];
|
|
d1 = ip[0] - ip[3];
|
|
|
|
op[0] = ((a1 + b1 + 1) >> 1) << Y2_WHT_UPSCALE_FACTOR;
|
|
op[1] = ((c1 + d1) >> 1) << Y2_WHT_UPSCALE_FACTOR;
|
|
op[2] = ((a1 - b1) >> 1) << Y2_WHT_UPSCALE_FACTOR;
|
|
op[3] = ((d1 - c1) >> 1) << Y2_WHT_UPSCALE_FACTOR;
|
|
|
|
ip += 4;
|
|
op += 4;
|
|
}
|
|
}
|
|
|
|
void vp9_short_walsh4x4_x8_c(short *input, short *output, int pitch) {
|
|
int i;
|
|
int a1, b1, c1, d1;
|
|
short *ip = input;
|
|
short *op = output;
|
|
int pitch_short = pitch >> 1;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = ip[0 * pitch_short] + ip[3 * pitch_short];
|
|
b1 = ip[1 * pitch_short] + ip[2 * pitch_short];
|
|
c1 = ip[1 * pitch_short] - ip[2 * pitch_short];
|
|
d1 = ip[0 * pitch_short] - ip[3 * pitch_short];
|
|
|
|
op[0] = (a1 + b1 + 1) >> 1;
|
|
op[4] = (c1 + d1) >> 1;
|
|
op[8] = (a1 - b1) >> 1;
|
|
op[12] = (d1 - c1) >> 1;
|
|
|
|
ip++;
|
|
op++;
|
|
}
|
|
ip = output;
|
|
op = output;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = ip[0] + ip[3];
|
|
b1 = ip[1] + ip[2];
|
|
c1 = ip[1] - ip[2];
|
|
d1 = ip[0] - ip[3];
|
|
|
|
op[0] = ((a1 + b1 + 1) >> 1) << WHT_UPSCALE_FACTOR;
|
|
op[1] = ((c1 + d1) >> 1) << WHT_UPSCALE_FACTOR;
|
|
op[2] = ((a1 - b1) >> 1) << WHT_UPSCALE_FACTOR;
|
|
op[3] = ((d1 - c1) >> 1) << WHT_UPSCALE_FACTOR;
|
|
|
|
ip += 4;
|
|
op += 4;
|
|
}
|
|
}
|
|
|
|
void vp9_short_walsh8x4_x8_c(short *input, short *output, int pitch) {
|
|
vp9_short_walsh4x4_x8_c(input, output, pitch);
|
|
vp9_short_walsh4x4_x8_c(input + 4, output + 16, pitch);
|
|
}
|
|
#endif
|
|
|
|
static const double C1 = 0.995184726672197;
|
|
static const double C2 = 0.98078528040323;
|
|
static const double C3 = 0.956940335732209;
|
|
static const double C4 = 0.923879532511287;
|
|
static const double C5 = 0.881921264348355;
|
|
static const double C6 = 0.831469612302545;
|
|
static const double C7 = 0.773010453362737;
|
|
static const double C8 = 0.707106781186548;
|
|
static const double C9 = 0.634393284163646;
|
|
static const double C10 = 0.555570233019602;
|
|
static const double C11 = 0.471396736825998;
|
|
static const double C12 = 0.38268343236509;
|
|
static const double C13 = 0.290284677254462;
|
|
static const double C14 = 0.195090322016128;
|
|
static const double C15 = 0.098017140329561;
|
|
|
|
static void dct16x16_1d(double input[16], double output[16]) {
|
|
vp8_clear_system_state(); // Make it simd safe : __asm emms;
|
|
{
|
|
double step[16];
|
|
double intermediate[16];
|
|
double temp1, temp2;
|
|
|
|
// step 1
|
|
step[ 0] = input[0] + input[15];
|
|
step[ 1] = input[1] + input[14];
|
|
step[ 2] = input[2] + input[13];
|
|
step[ 3] = input[3] + input[12];
|
|
step[ 4] = input[4] + input[11];
|
|
step[ 5] = input[5] + input[10];
|
|
step[ 6] = input[6] + input[ 9];
|
|
step[ 7] = input[7] + input[ 8];
|
|
step[ 8] = input[7] - input[ 8];
|
|
step[ 9] = input[6] - input[ 9];
|
|
step[10] = input[5] - input[10];
|
|
step[11] = input[4] - input[11];
|
|
step[12] = input[3] - input[12];
|
|
step[13] = input[2] - input[13];
|
|
step[14] = input[1] - input[14];
|
|
step[15] = input[0] - input[15];
|
|
|
|
// step 2
|
|
output[0] = step[0] + step[7];
|
|
output[1] = step[1] + step[6];
|
|
output[2] = step[2] + step[5];
|
|
output[3] = step[3] + step[4];
|
|
output[4] = step[3] - step[4];
|
|
output[5] = step[2] - step[5];
|
|
output[6] = step[1] - step[6];
|
|
output[7] = step[0] - step[7];
|
|
|
|
temp1 = step[ 8]*C7;
|
|
temp2 = step[15]*C9;
|
|
output[ 8] = temp1 + temp2;
|
|
|
|
temp1 = step[ 9]*C11;
|
|
temp2 = step[14]*C5;
|
|
output[ 9] = temp1 - temp2;
|
|
|
|
temp1 = step[10]*C3;
|
|
temp2 = step[13]*C13;
|
|
output[10] = temp1 + temp2;
|
|
|
|
temp1 = step[11]*C15;
|
|
temp2 = step[12]*C1;
|
|
output[11] = temp1 - temp2;
|
|
|
|
temp1 = step[11]*C1;
|
|
temp2 = step[12]*C15;
|
|
output[12] = temp2 + temp1;
|
|
|
|
temp1 = step[10]*C13;
|
|
temp2 = step[13]*C3;
|
|
output[13] = temp2 - temp1;
|
|
|
|
temp1 = step[ 9]*C5;
|
|
temp2 = step[14]*C11;
|
|
output[14] = temp2 + temp1;
|
|
|
|
temp1 = step[ 8]*C9;
|
|
temp2 = step[15]*C7;
|
|
output[15] = temp2 - temp1;
|
|
|
|
// step 3
|
|
step[ 0] = output[0] + output[3];
|
|
step[ 1] = output[1] + output[2];
|
|
step[ 2] = output[1] - output[2];
|
|
step[ 3] = output[0] - output[3];
|
|
|
|
temp1 = output[4]*C14;
|
|
temp2 = output[7]*C2;
|
|
step[ 4] = temp1 + temp2;
|
|
|
|
temp1 = output[5]*C10;
|
|
temp2 = output[6]*C6;
|
|
step[ 5] = temp1 + temp2;
|
|
|
|
temp1 = output[5]*C6;
|
|
temp2 = output[6]*C10;
|
|
step[ 6] = temp2 - temp1;
|
|
|
|
temp1 = output[4]*C2;
|
|
temp2 = output[7]*C14;
|
|
step[ 7] = temp2 - temp1;
|
|
|
|
step[ 8] = output[ 8] + output[11];
|
|
step[ 9] = output[ 9] + output[10];
|
|
step[10] = output[ 9] - output[10];
|
|
step[11] = output[ 8] - output[11];
|
|
|
|
step[12] = output[12] + output[15];
|
|
step[13] = output[13] + output[14];
|
|
step[14] = output[13] - output[14];
|
|
step[15] = output[12] - output[15];
|
|
|
|
// step 4
|
|
output[ 0] = (step[ 0] + step[ 1]);
|
|
output[ 8] = (step[ 0] - step[ 1]);
|
|
|
|
temp1 = step[2]*C12;
|
|
temp2 = step[3]*C4;
|
|
temp1 = temp1 + temp2;
|
|
output[ 4] = 2*(temp1*C8);
|
|
|
|
temp1 = step[2]*C4;
|
|
temp2 = step[3]*C12;
|
|
temp1 = temp2 - temp1;
|
|
output[12] = 2*(temp1*C8);
|
|
|
|
output[ 2] = 2*((step[4] + step[ 5])*C8);
|
|
output[14] = 2*((step[7] - step[ 6])*C8);
|
|
|
|
temp1 = step[4] - step[5];
|
|
temp2 = step[6] + step[7];
|
|
output[ 6] = (temp1 + temp2);
|
|
output[10] = (temp1 - temp2);
|
|
|
|
intermediate[8] = step[8] + step[14];
|
|
intermediate[9] = step[9] + step[15];
|
|
|
|
temp1 = intermediate[8]*C12;
|
|
temp2 = intermediate[9]*C4;
|
|
temp1 = temp1 - temp2;
|
|
output[3] = 2*(temp1*C8);
|
|
|
|
temp1 = intermediate[8]*C4;
|
|
temp2 = intermediate[9]*C12;
|
|
temp1 = temp2 + temp1;
|
|
output[13] = 2*(temp1*C8);
|
|
|
|
output[ 9] = 2*((step[10] + step[11])*C8);
|
|
|
|
intermediate[11] = step[10] - step[11];
|
|
intermediate[12] = step[12] + step[13];
|
|
intermediate[13] = step[12] - step[13];
|
|
intermediate[14] = step[ 8] - step[14];
|
|
intermediate[15] = step[ 9] - step[15];
|
|
|
|
output[15] = (intermediate[11] + intermediate[12]);
|
|
output[ 1] = -(intermediate[11] - intermediate[12]);
|
|
|
|
output[ 7] = 2*(intermediate[13]*C8);
|
|
|
|
temp1 = intermediate[14]*C12;
|
|
temp2 = intermediate[15]*C4;
|
|
temp1 = temp1 - temp2;
|
|
output[11] = -2*(temp1*C8);
|
|
|
|
temp1 = intermediate[14]*C4;
|
|
temp2 = intermediate[15]*C12;
|
|
temp1 = temp2 + temp1;
|
|
output[ 5] = 2*(temp1*C8);
|
|
}
|
|
vp8_clear_system_state(); // Make it simd safe : __asm emms;
|
|
}
|
|
|
|
void vp9_short_fdct16x16_c(short *input, short *out, int pitch) {
|
|
vp8_clear_system_state(); // Make it simd safe : __asm emms;
|
|
{
|
|
int shortpitch = pitch >> 1;
|
|
int i, j;
|
|
double output[256];
|
|
// First transform columns
|
|
for (i = 0; i < 16; i++) {
|
|
double temp_in[16], temp_out[16];
|
|
for (j = 0; j < 16; j++)
|
|
temp_in[j] = input[j*shortpitch + i];
|
|
dct16x16_1d(temp_in, temp_out);
|
|
for (j = 0; j < 16; j++)
|
|
output[j*16 + i] = temp_out[j];
|
|
}
|
|
// Then transform rows
|
|
for (i = 0; i < 16; ++i) {
|
|
double temp_in[16], temp_out[16];
|
|
for (j = 0; j < 16; ++j)
|
|
temp_in[j] = output[j + i*16];
|
|
dct16x16_1d(temp_in, temp_out);
|
|
for (j = 0; j < 16; ++j)
|
|
output[j + i*16] = temp_out[j];
|
|
}
|
|
// Scale by some magic number
|
|
for (i = 0; i < 256; i++)
|
|
out[i] = (short)round(output[i]/2);
|
|
}
|
|
vp8_clear_system_state(); // Make it simd safe : __asm emms;
|
|
}
|