| /* |
| * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| |
| #include <assert.h> |
| #include <math.h> |
| #include "vpx_ports/config.h" |
| #include "vp9/common/vp9_systemdependent.h" |
| |
| #include "vp9/common/vp9_blockd.h" |
| |
| // TODO: these transforms can be converted into integer forms to reduce |
| // the complexity |
| static const float dct_4[16] = { |
| 0.500000000000000, 0.500000000000000, 0.500000000000000, 0.500000000000000, |
| 0.653281482438188, 0.270598050073099, -0.270598050073099, -0.653281482438188, |
| 0.500000000000000, -0.500000000000000, -0.500000000000000, 0.500000000000000, |
| 0.270598050073099, -0.653281482438188, 0.653281482438188, -0.270598050073099 |
| }; |
| |
| static const float adst_4[16] = { |
| 0.228013428883779, 0.428525073124360, 0.577350269189626, 0.656538502008139, |
| 0.577350269189626, 0.577350269189626, 0.000000000000000, -0.577350269189626, |
| 0.656538502008139, -0.228013428883779, -0.577350269189626, 0.428525073124359, |
| 0.428525073124360, -0.656538502008139, 0.577350269189626, -0.228013428883779 |
| }; |
| |
| static const float dct_8[64] = { |
| 0.353553390593274, 0.353553390593274, 0.353553390593274, 0.353553390593274, |
| 0.353553390593274, 0.353553390593274, 0.353553390593274, 0.353553390593274, |
| 0.490392640201615, 0.415734806151273, 0.277785116509801, 0.097545161008064, |
| -0.097545161008064, -0.277785116509801, -0.415734806151273, -0.490392640201615, |
| 0.461939766255643, 0.191341716182545, -0.191341716182545, -0.461939766255643, |
| -0.461939766255643, -0.191341716182545, 0.191341716182545, 0.461939766255643, |
| 0.415734806151273, -0.097545161008064, -0.490392640201615, -0.277785116509801, |
| 0.277785116509801, 0.490392640201615, 0.097545161008064, -0.415734806151273, |
| 0.353553390593274, -0.353553390593274, -0.353553390593274, 0.353553390593274, |
| 0.353553390593274, -0.353553390593274, -0.353553390593274, 0.353553390593274, |
| 0.277785116509801, -0.490392640201615, 0.097545161008064, 0.415734806151273, |
| -0.415734806151273, -0.097545161008064, 0.490392640201615, -0.277785116509801, |
| 0.191341716182545, -0.461939766255643, 0.461939766255643, -0.191341716182545, |
| -0.191341716182545, 0.461939766255643, -0.461939766255643, 0.191341716182545, |
| 0.097545161008064, -0.277785116509801, 0.415734806151273, -0.490392640201615, |
| 0.490392640201615, -0.415734806151273, 0.277785116509801, -0.097545161008064 |
| }; |
| |
| static const float adst_8[64] = { |
| 0.089131608307533, 0.175227946595735, 0.255357107325376, 0.326790388032145, |
| 0.387095214016349, 0.434217976756762, 0.466553967085785, 0.483002021635509, |
| 0.255357107325376, 0.434217976756762, 0.483002021635509, 0.387095214016349, |
| 0.175227946595735, -0.089131608307533, -0.326790388032145, -0.466553967085785, |
| 0.387095214016349, 0.466553967085785, 0.175227946595735, -0.255357107325376, |
| -0.483002021635509, -0.326790388032145, 0.089131608307533, 0.434217976756762, |
| 0.466553967085785, 0.255357107325376, -0.326790388032145, -0.434217976756762, |
| 0.089131608307533, 0.483002021635509, 0.175227946595735, -0.387095214016348, |
| 0.483002021635509, -0.089131608307533, -0.466553967085785, 0.175227946595735, |
| 0.434217976756762, -0.255357107325376, -0.387095214016348, 0.326790388032145, |
| 0.434217976756762, -0.387095214016348, -0.089131608307533, 0.466553967085786, |
| -0.326790388032145, -0.175227946595735, 0.483002021635509, -0.255357107325375, |
| 0.326790388032145, -0.483002021635509, 0.387095214016349, -0.089131608307534, |
| -0.255357107325377, 0.466553967085785, -0.434217976756762, 0.175227946595736, |
| 0.175227946595735, -0.326790388032145, 0.434217976756762, -0.483002021635509, |
| 0.466553967085785, -0.387095214016348, 0.255357107325376, -0.089131608307532 |
| }; |
| |
| /* Converted the transforms to integers. */ |
| static const int16_t dct_i4[16] = { |
| 16384, 16384, 16384, 16384, |
| 21407, 8867, -8867, -21407, |
| 16384, -16384, -16384, 16384, |
| 8867, -21407, 21407, -8867 |
| }; |
| |
| static const int16_t adst_i4[16] = { |
| 7472, 14042, 18919, 21513, |
| 18919, 18919, 0, -18919, |
| 21513, -7472, -18919, 14042, |
| 14042, -21513, 18919, -7472 |
| }; |
| |
| static const int16_t dct_i8[64] = { |
| 11585, 11585, 11585, 11585, |
| 11585, 11585, 11585, 11585, |
| 16069, 13623, 9102, 3196, |
| -3196, -9102, -13623, -16069, |
| 15137, 6270, -6270, -15137, |
| -15137, -6270, 6270, 15137, |
| 13623, -3196, -16069, -9102, |
| 9102, 16069, 3196, -13623, |
| 11585, -11585, -11585, 11585, |
| 11585, -11585, -11585, 11585, |
| 9102, -16069, 3196, 13623, |
| -13623, -3196, 16069, -9102, |
| 6270, -15137, 15137, -6270, |
| -6270, 15137, -15137, 6270, |
| 3196, -9102, 13623, -16069, |
| 16069, -13623, 9102, -3196 |
| }; |
| |
| static const int16_t adst_i8[64] = { |
| 2921, 5742, 8368, 10708, |
| 12684, 14228, 15288, 15827, |
| 8368, 14228, 15827, 12684, |
| 5742, -2921, -10708, -15288, |
| 12684, 15288, 5742, -8368, |
| -15827, -10708, 2921, 14228, |
| 15288, 8368, -10708, -14228, |
| 2921, 15827, 5742, -12684, |
| 15827, -2921, -15288, 5742, |
| 14228, -8368, -12684, 10708, |
| 14228, -12684, -2921, 15288, |
| -10708, -5742, 15827, -8368, |
| 10708, -15827, 12684, -2921, |
| -8368, 15288, -14228, 5742, |
| 5742, -10708, 14228, -15827, |
| 15288, -12684, 8368, -2921 |
| }; |
| |
| static const float dct_16[256] = { |
| 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, |
| 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, 0.250000, |
| 0.351851, 0.338330, 0.311806, 0.273300, 0.224292, 0.166664, 0.102631, 0.034654, |
| -0.034654, -0.102631, -0.166664, -0.224292, -0.273300, -0.311806, -0.338330, -0.351851, |
| 0.346760, 0.293969, 0.196424, 0.068975, -0.068975, -0.196424, -0.293969, -0.346760, |
| -0.346760, -0.293969, -0.196424, -0.068975, 0.068975, 0.196424, 0.293969, 0.346760, |
| 0.338330, 0.224292, 0.034654, -0.166664, -0.311806, -0.351851, -0.273300, -0.102631, |
| 0.102631, 0.273300, 0.351851, 0.311806, 0.166664, -0.034654, -0.224292, -0.338330, |
| 0.326641, 0.135299, -0.135299, -0.326641, -0.326641, -0.135299, 0.135299, 0.326641, |
| 0.326641, 0.135299, -0.135299, -0.326641, -0.326641, -0.135299, 0.135299, 0.326641, |
| 0.311806, 0.034654, -0.273300, -0.338330, -0.102631, 0.224292, 0.351851, 0.166664, |
| -0.166664, -0.351851, -0.224292, 0.102631, 0.338330, 0.273300, -0.034654, -0.311806, |
| 0.293969, -0.068975, -0.346760, -0.196424, 0.196424, 0.346760, 0.068975, -0.293969, |
| -0.293969, 0.068975, 0.346760, 0.196424, -0.196424, -0.346760, -0.068975, 0.293969, |
| 0.273300, -0.166664, -0.338330, 0.034654, 0.351851, 0.102631, -0.311806, -0.224292, |
| 0.224292, 0.311806, -0.102631, -0.351851, -0.034654, 0.338330, 0.166664, -0.273300, |
| 0.250000, -0.250000, -0.250000, 0.250000, 0.250000, -0.250000, -0.250000, 0.250000, |
| 0.250000, -0.250000, -0.250000, 0.250000, 0.250000, -0.250000, -0.250000, 0.250000, |
| 0.224292, -0.311806, -0.102631, 0.351851, -0.034654, -0.338330, 0.166664, 0.273300, |
| -0.273300, -0.166664, 0.338330, 0.034654, -0.351851, 0.102631, 0.311806, -0.224292, |
| 0.196424, -0.346760, 0.068975, 0.293969, -0.293969, -0.068975, 0.346760, -0.196424, |
| -0.196424, 0.346760, -0.068975, -0.293969, 0.293969, 0.068975, -0.346760, 0.196424, |
| 0.166664, -0.351851, 0.224292, 0.102631, -0.338330, 0.273300, 0.034654, -0.311806, |
| 0.311806, -0.034654, -0.273300, 0.338330, -0.102631, -0.224292, 0.351851, -0.166664, |
| 0.135299, -0.326641, 0.326641, -0.135299, -0.135299, 0.326641, -0.326641, 0.135299, |
| 0.135299, -0.326641, 0.326641, -0.135299, -0.135299, 0.326641, -0.326641, 0.135299, |
| 0.102631, -0.273300, 0.351851, -0.311806, 0.166664, 0.034654, -0.224292, 0.338330, |
| -0.338330, 0.224292, -0.034654, -0.166664, 0.311806, -0.351851, 0.273300, -0.102631, |
| 0.068975, -0.196424, 0.293969, -0.346760, 0.346760, -0.293969, 0.196424, -0.068975, |
| -0.068975, 0.196424, -0.293969, 0.346760, -0.346760, 0.293969, -0.196424, 0.068975, |
| 0.034654, -0.102631, 0.166664, -0.224292, 0.273300, -0.311806, 0.338330, -0.351851, |
| 0.351851, -0.338330, 0.311806, -0.273300, 0.224292, -0.166664, 0.102631, -0.034654 |
| }; |
| |
| static const float adst_16[256] = { |
| 0.033094, 0.065889, 0.098087, 0.129396, 0.159534, 0.188227, 0.215215, 0.240255, |
| 0.263118, 0.283599, 0.301511, 0.316693, 0.329007, 0.338341, 0.344612, 0.347761, |
| 0.098087, 0.188227, 0.263118, 0.316693, 0.344612, 0.344612, 0.316693, 0.263118, |
| 0.188227, 0.098087, 0.000000, -0.098087, -0.188227, -0.263118, -0.316693, -0.344612, |
| 0.159534, 0.283599, 0.344612, 0.329007, 0.240255, 0.098087, -0.065889, -0.215215, |
| -0.316693, -0.347761, -0.301511, -0.188227, -0.033094, 0.129396, 0.263118, 0.338341, |
| 0.215215, 0.338341, 0.316693, 0.159534, -0.065889, -0.263118, -0.347761, -0.283599, |
| -0.098087, 0.129396, 0.301511, 0.344612, 0.240255, 0.033094, -0.188227, -0.329007, |
| 0.263118, 0.344612, 0.188227, -0.098087, -0.316693, -0.316693, -0.098087, 0.188227, |
| 0.344612, 0.263118, 0.000000, -0.263118, -0.344612, -0.188227, 0.098087, 0.316693, |
| 0.301511, 0.301511, 0.000000, -0.301511, -0.301511, -0.000000, 0.301511, 0.301511, |
| 0.000000, -0.301511, -0.301511, -0.000000, 0.301511, 0.301511, 0.000000, -0.301511, |
| 0.329007, 0.215215, -0.188227, -0.338341, -0.033094, 0.316693, 0.240255, -0.159534, |
| -0.344612, -0.065889, 0.301511, 0.263118, -0.129396, -0.347761, -0.098087, 0.283599, |
| 0.344612, 0.098087, -0.316693, -0.188227, 0.263118, 0.263118, -0.188227, -0.316693, |
| 0.098087, 0.344612, 0.000000, -0.344612, -0.098087, 0.316693, 0.188227, -0.263118, |
| 0.347761, -0.033094, -0.344612, 0.065889, 0.338341, -0.098087, -0.329007, 0.129396, |
| 0.316693, -0.159534, -0.301511, 0.188227, 0.283599, -0.215215, -0.263118, 0.240255, |
| 0.338341, -0.159534, -0.263118, 0.283599, 0.129396, -0.344612, 0.033094, 0.329007, |
| -0.188227, -0.240255, 0.301511, 0.098087, -0.347761, 0.065889, 0.316693, -0.215215, |
| 0.316693, -0.263118, -0.098087, 0.344612, -0.188227, -0.188227, 0.344612, -0.098087, |
| -0.263118, 0.316693, 0.000000, -0.316693, 0.263118, 0.098087, -0.344612, 0.188227, |
| 0.283599, -0.329007, 0.098087, 0.215215, -0.347761, 0.188227, 0.129396, -0.338341, |
| 0.263118, 0.033094, -0.301511, 0.316693, -0.065889, -0.240255, 0.344612, -0.159534, |
| 0.240255, -0.347761, 0.263118, -0.033094, -0.215215, 0.344612, -0.283599, 0.065889, |
| 0.188227, -0.338341, 0.301511, -0.098087, -0.159534, 0.329007, -0.316693, 0.129396, |
| 0.188227, -0.316693, 0.344612, -0.263118, 0.098087, 0.098087, -0.263118, 0.344612, |
| -0.316693, 0.188227, 0.000000, -0.188227, 0.316693, -0.344612, 0.263118, -0.098087, |
| 0.129396, -0.240255, 0.316693, -0.347761, 0.329007, -0.263118, 0.159534, -0.033094, |
| -0.098087, 0.215215, -0.301511, 0.344612, -0.338341, 0.283599, -0.188227, 0.065889, |
| 0.065889, -0.129396, 0.188227, -0.240255, 0.283599, -0.316693, 0.338341, -0.347761, |
| 0.344612, -0.329007, 0.301511, -0.263118, 0.215215, -0.159534, 0.098087, -0.033094 |
| }; |
| |
| /* Converted the transforms to integers. */ |
| static const int16_t dct_i16[256] = { |
| 8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192, |
| 8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192, |
| 11529, 11086, 10217, 8955, 7350, 5461, 3363, 1136, |
| -1136, -3363, -5461, -7350, -8955, -10217, -11086, -11529, |
| 11363, 9633, 6436, 2260, -2260, -6436, -9633, -11363, |
| -11363, -9633, -6436, -2260, 2260, 6436, 9633, 11363, |
| 11086, 7350, 1136, -5461, -10217, -11529, -8955, -3363, |
| 3363, 8955, 11529, 10217, 5461, -1136, -7350, -11086, |
| 10703, 4433, -4433, -10703, -10703, -4433, 4433, 10703, |
| 10703, 4433, -4433, -10703, -10703, -4433, 4433, 10703, |
| 10217, 1136, -8955, -11086, -3363, 7350, 11529, 5461, |
| -5461, -11529, -7350, 3363, 11086, 8955, -1136, -10217, |
| 9633, -2260, -11363, -6436, 6436, 11363, 2260, -9633, |
| -9633, 2260, 11363, 6436, -6436, -11363, -2260, 9633, |
| 8955, -5461, -11086, 1136, 11529, 3363, -10217, -7350, |
| 7350, 10217, -3363, -11529, -1136, 11086, 5461, -8955, |
| 8192, -8192, -8192, 8192, 8192, -8192, -8192, 8192, |
| 8192, -8192, -8192, 8192, 8192, -8192, -8192, 8192, |
| 7350, -10217, -3363, 11529, -1136, -11086, 5461, 8955, |
| -8955, -5461, 11086, 1136, -11529, 3363, 10217, -7350, |
| 6436, -11363, 2260, 9633, -9633, -2260, 11363, -6436, |
| -6436, 11363, -2260, -9633, 9633, 2260, -11363, 6436, |
| 5461, -11529, 7350, 3363, -11086, 8955, 1136, -10217, |
| 10217, -1136, -8955, 11086, -3363, -7350, 11529, -5461, |
| 4433, -10703, 10703, -4433, -4433, 10703, -10703, 4433, |
| 4433, -10703, 10703, -4433, -4433, 10703, -10703, 4433, |
| 3363, -8955, 11529, -10217, 5461, 1136, -7350, 11086, |
| -11086, 7350, -1136, -5461, 10217, -11529, 8955, -3363, |
| 2260, -6436, 9633, -11363, 11363, -9633, 6436, -2260, |
| -2260, 6436, -9633, 11363, -11363, 9633, -6436, 2260, |
| 1136, -3363, 5461, -7350, 8955, -10217, 11086, -11529, |
| 11529, -11086, 10217, -8955, 7350, -5461, 3363, -1136 |
| }; |
| |
| static 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) { |
| /* [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) { |
| vp9_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 |
| const 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; |
| } |
| } |
| vp9_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 |
| |
| #define TEST_INT_16x16_DCT 1 |
| #if !TEST_INT_16x16_DCT |
| 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]) { |
| vp9_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); |
| } |
| vp9_clear_system_state(); // Make it simd safe : __asm emms; |
| } |
| |
| void vp9_short_fdct16x16_c(short *input, short *out, int pitch) { |
| vp9_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); |
| } |
| vp9_clear_system_state(); // Make it simd safe : __asm emms; |
| } |
| |
| #else |
| static const int16_t C1 = 16305; |
| static const int16_t C2 = 16069; |
| static const int16_t C3 = 15679; |
| static const int16_t C4 = 15137; |
| static const int16_t C5 = 14449; |
| static const int16_t C6 = 13623; |
| static const int16_t C7 = 12665; |
| static const int16_t C8 = 11585; |
| static const int16_t C9 = 10394; |
| static const int16_t C10 = 9102; |
| static const int16_t C11 = 7723; |
| static const int16_t C12 = 6270; |
| static const int16_t C13 = 4756; |
| static const int16_t C14 = 3196; |
| static const int16_t C15 = 1606; |
| |
| #define RIGHT_SHIFT 14 |
| #define ROUNDING (1 << (RIGHT_SHIFT - 1)) |
| |
| static void dct16x16_1d(int16_t input[16], int16_t output[16], |
| int last_shift_bits) { |
| int16_t step[16]; |
| int intermediate[16]; |
| int temp1, temp2; |
| int final_shift = RIGHT_SHIFT; |
| int final_rounding = ROUNDING; |
| int output_shift = 0; |
| int output_rounding = 0; |
| |
| final_shift += last_shift_bits; |
| if (final_shift > 0) |
| final_rounding = 1 << (final_shift - 1); |
| |
| output_shift += last_shift_bits; |
| if (output_shift > 0) |
| output_rounding = 1 << (output_shift - 1); |
| |
| // 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 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = step[ 9] * C11; |
| temp2 = step[14] * C5; |
| output[ 9] = (temp1 - temp2 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = step[10] * C3; |
| temp2 = step[13] * C13; |
| output[10] = (temp1 + temp2 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = step[11] * C15; |
| temp2 = step[12] * C1; |
| output[11] = (temp1 - temp2 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = step[11] * C1; |
| temp2 = step[12] * C15; |
| output[12] = (temp2 + temp1 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = step[10] * C13; |
| temp2 = step[13] * C3; |
| output[13] = (temp2 - temp1 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = step[ 9] * C5; |
| temp2 = step[14] * C11; |
| output[14] = (temp2 + temp1 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = step[ 8] * C9; |
| temp2 = step[15] * C7; |
| output[15] = (temp2 - temp1 + ROUNDING) >> RIGHT_SHIFT; |
| |
| // 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 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = output[5] * C10; |
| temp2 = output[6] * C6; |
| step[ 5] = (temp1 + temp2 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = output[5] * C6; |
| temp2 = output[6] * C10; |
| step[ 6] = (temp2 - temp1 + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = output[4] * C2; |
| temp2 = output[7] * C14; |
| step[ 7] = (temp2 - temp1 + ROUNDING) >> RIGHT_SHIFT; |
| |
| 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_rounding) >> output_shift; |
| output[ 8] = (step[ 0] - step[ 1] + output_rounding) >> output_shift; |
| |
| temp1 = step[2] * C12; |
| temp2 = step[3] * C4; |
| temp1 = (temp1 + temp2 + final_rounding) >> final_shift; |
| output[ 4] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = step[2] * C4; |
| temp2 = step[3] * C12; |
| temp1 = (temp2 - temp1 + final_rounding) >> final_shift; |
| output[12] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT; |
| |
| output[ 2] = (2 * ((step[4] + step[ 5]) * C8) + final_rounding) |
| >> final_shift; |
| output[14] = (2 * ((step[7] - step[ 6]) * C8) + final_rounding) |
| >> final_shift; |
| |
| temp1 = step[4] - step[5]; |
| temp2 = step[6] + step[7]; |
| output[ 6] = (temp1 + temp2 + output_rounding) >> output_shift; |
| output[10] = (temp1 - temp2 + output_rounding) >> output_shift; |
| |
| intermediate[8] = step[8] + step[14]; |
| intermediate[9] = step[9] + step[15]; |
| |
| temp1 = intermediate[8] * C12; |
| temp2 = intermediate[9] * C4; |
| temp1 = (temp1 - temp2 + final_rounding) >> final_shift; |
| output[3] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = intermediate[8] * C4; |
| temp2 = intermediate[9] * C12; |
| temp1 = (temp2 + temp1 + final_rounding) >> final_shift; |
| output[13] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT; |
| |
| output[ 9] = (2 * ((step[10] + step[11]) * C8) + final_rounding) |
| >> final_shift; |
| |
| 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_rounding) |
| >> output_shift; |
| output[ 1] = -(intermediate[11] - intermediate[12] + output_rounding) |
| >> output_shift; |
| |
| output[ 7] = (2 * (intermediate[13] * C8) + final_rounding) >> final_shift; |
| |
| temp1 = intermediate[14] * C12; |
| temp2 = intermediate[15] * C4; |
| temp1 = (temp1 - temp2 + final_rounding) >> final_shift; |
| output[11] = (-2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT; |
| |
| temp1 = intermediate[14] * C4; |
| temp2 = intermediate[15] * C12; |
| temp1 = (temp2 + temp1 + final_rounding) >> final_shift; |
| output[ 5] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT; |
| } |
| |
| void vp9_short_fdct16x16_c(int16_t *input, int16_t *out, int pitch) { |
| int shortpitch = pitch >> 1; |
| int i, j; |
| int16_t output[256]; |
| int16_t *outptr = &output[0]; |
| |
| // First transform columns |
| for (i = 0; i < 16; i++) { |
| int16_t temp_in[16]; |
| int16_t temp_out[16]; |
| for (j = 0; j < 16; j++) |
| temp_in[j] = input[j * shortpitch + i]; |
| dct16x16_1d(temp_in, temp_out, 0); |
| for (j = 0; j < 16; j++) |
| output[j * 16 + i] = temp_out[j]; |
| } |
| |
| // Then transform rows |
| for (i = 0; i < 16; ++i) { |
| dct16x16_1d(outptr, out, 1); |
| outptr += 16; |
| out += 16; |
| } |
| } |
| #undef RIGHT_SHIFT |
| #undef ROUNDING |
| #endif |
