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Diffstat (limited to 'simd/powerpc/jcsample-altivec.c')
| -rw-r--r-- | simd/powerpc/jcsample-altivec.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/simd/powerpc/jcsample-altivec.c b/simd/powerpc/jcsample-altivec.c deleted file mode 100644 index 6e25b8d..0000000 --- a/simd/powerpc/jcsample-altivec.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * AltiVec optimizations for libjpeg-turbo - * - * Copyright (C) 2015, D. R. Commander. All Rights Reserved. - * - * This software is provided 'as-is', without any express or implied - * warranty. In no event will the authors be held liable for any damages - * arising from the use of this software. - * - * Permission is granted to anyone to use this software for any purpose, - * including commercial applications, and to alter it and redistribute it - * freely, subject to the following restrictions: - * - * 1. The origin of this software must not be misrepresented; you must not - * claim that you wrote the original software. If you use this software - * in a product, an acknowledgment in the product documentation would be - * appreciated but is not required. - * 2. Altered source versions must be plainly marked as such, and must not be - * misrepresented as being the original software. - * 3. This notice may not be removed or altered from any source distribution. - */ - -/* CHROMA DOWNSAMPLING */ - -#include "jsimd_altivec.h" -#include "jcsample.h" - - -void jsimd_h2v1_downsample_altivec(JDIMENSION image_width, - int max_v_samp_factor, - JDIMENSION v_samp_factor, - JDIMENSION width_in_blocks, - JSAMPARRAY input_data, - JSAMPARRAY output_data) -{ - int outrow, outcol; - JDIMENSION output_cols = width_in_blocks * DCTSIZE; - JSAMPROW inptr, outptr; - - __vector unsigned char this0, next0, out; - __vector unsigned short this0e, this0o, next0e, next0o, outl, outh; - - /* Constants */ - __vector unsigned short pw_bias = { __4X2(0, 1) }, - pw_one = { __8X(1) }; - __vector unsigned char even_odd_index = - { 0, 2, 4, 6, 8, 10, 12, 14, 1, 3, 5, 7, 9, 11, 13, 15 }, - pb_zero = { __16X(0) }; - - expand_right_edge(input_data, max_v_samp_factor, image_width, - output_cols * 2); - - for (outrow = 0; outrow < v_samp_factor; outrow++) { - outptr = output_data[outrow]; - inptr = input_data[outrow]; - - for (outcol = output_cols; outcol > 0; - outcol -= 16, inptr += 32, outptr += 16) { - - this0 = vec_ld(0, inptr); - this0 = vec_perm(this0, this0, even_odd_index); - this0e = (__vector unsigned short)VEC_UNPACKHU(this0); - this0o = (__vector unsigned short)VEC_UNPACKLU(this0); - outl = vec_add(this0e, this0o); - outl = vec_add(outl, pw_bias); - outl = vec_sr(outl, pw_one); - - if (outcol > 8) { - next0 = vec_ld(16, inptr); - next0 = vec_perm(next0, next0, even_odd_index); - next0e = (__vector unsigned short)VEC_UNPACKHU(next0); - next0o = (__vector unsigned short)VEC_UNPACKLU(next0); - outh = vec_add(next0e, next0o); - outh = vec_add(outh, pw_bias); - outh = vec_sr(outh, pw_one); - } else - outh = vec_splat_u16(0); - - out = vec_pack(outl, outh); - vec_st(out, 0, outptr); - } - } -} - - -void -jsimd_h2v2_downsample_altivec(JDIMENSION image_width, int max_v_samp_factor, - JDIMENSION v_samp_factor, - JDIMENSION width_in_blocks, - JSAMPARRAY input_data, JSAMPARRAY output_data) -{ - int inrow, outrow, outcol; - JDIMENSION output_cols = width_in_blocks * DCTSIZE; - JSAMPROW inptr0, inptr1, outptr; - - __vector unsigned char this0, next0, this1, next1, out; - __vector unsigned short this0e, this0o, next0e, next0o, this1e, this1o, - next1e, next1o, out0l, out0h, out1l, out1h, outl, outh; - - /* Constants */ - __vector unsigned short pw_bias = { __4X2(1, 2) }, - pw_two = { __8X(2) }; - __vector unsigned char even_odd_index = - { 0, 2, 4, 6, 8, 10, 12, 14, 1, 3, 5, 7, 9, 11, 13, 15 }, - pb_zero = { __16X(0) }; - - expand_right_edge(input_data, max_v_samp_factor, image_width, - output_cols * 2); - - for (inrow = 0, outrow = 0; outrow < v_samp_factor; - inrow += 2, outrow++) { - - inptr0 = input_data[inrow]; - inptr1 = input_data[inrow + 1]; - outptr = output_data[outrow]; - - for (outcol = output_cols; outcol > 0; - outcol -= 16, inptr0 += 32, inptr1 += 32, outptr += 16) { - - this0 = vec_ld(0, inptr0); - this0 = vec_perm(this0, this0, even_odd_index); - this0e = (__vector unsigned short)VEC_UNPACKHU(this0); - this0o = (__vector unsigned short)VEC_UNPACKLU(this0); - out0l = vec_add(this0e, this0o); - - this1 = vec_ld(0, inptr1); - this1 = vec_perm(this1, this1, even_odd_index); - this1e = (__vector unsigned short)VEC_UNPACKHU(this1); - this1o = (__vector unsigned short)VEC_UNPACKLU(this1); - out1l = vec_add(this1e, this1o); - - outl = vec_add(out0l, out1l); - outl = vec_add(outl, pw_bias); - outl = vec_sr(outl, pw_two); - - if (outcol > 8) { - next0 = vec_ld(16, inptr0); - next0 = vec_perm(next0, next0, even_odd_index); - next0e = (__vector unsigned short)VEC_UNPACKHU(next0); - next0o = (__vector unsigned short)VEC_UNPACKLU(next0); - out0h = vec_add(next0e, next0o); - - next1 = vec_ld(16, inptr1); - next1 = vec_perm(next1, next1, even_odd_index); - next1e = (__vector unsigned short)VEC_UNPACKHU(next1); - next1o = (__vector unsigned short)VEC_UNPACKLU(next1); - out1h = vec_add(next1e, next1o); - - outh = vec_add(out0h, out1h); - outh = vec_add(outh, pw_bias); - outh = vec_sr(outh, pw_two); - } else - outh = vec_splat_u16(0); - - out = vec_pack(outl, outh); - vec_st(out, 0, outptr); - } - } -} |