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Diffstat (limited to 'simd/loongson/jcsample-mmi.c')
| -rw-r--r-- | simd/loongson/jcsample-mmi.c | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/simd/loongson/jcsample-mmi.c b/simd/loongson/jcsample-mmi.c deleted file mode 100644 index 2f2d851..0000000 --- a/simd/loongson/jcsample-mmi.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * Loongson MMI optimizations for libjpeg-turbo - * - * Copyright (C) 2015, 2018, D. R. Commander. All Rights Reserved. - * Copyright (C) 2016-2017, Loongson Technology Corporation Limited, BeiJing. - * All Rights Reserved. - * Authors: ZhuChen <zhuchen@loongson.cn> - * CaiWanwei <caiwanwei@loongson.cn> - * SunZhangzhi <sunzhangzhi-cq@loongson.cn> - * - * Based on the x86 SIMD extension for IJG JPEG library - * Copyright (C) 1999-2006, MIYASAKA Masaru. - * - * 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_mmi.h" -#include "jcsample.h" - - -void jsimd_h2v2_downsample_mmi(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, bias; - JDIMENSION output_cols = width_in_blocks * DCTSIZE; - JSAMPROW inptr0, inptr1, outptr; - __m64 mm0, mm1, mm2, mm3, mm4, mm5, mm6 = 0.0, mm7; - - expand_right_edge(input_data, max_v_samp_factor, image_width, - output_cols * 2); - - bias = (1 << 17) + 1; /* 0x00020001 (bias pattern) */ - mm7 = _mm_set1_pi32(bias); /* mm7={1, 2, 1, 2} */ - mm6 = _mm_cmpeq_pi16(mm6, mm6); - mm6 = _mm_srli_pi16(mm6, BYTE_BIT); /* mm6={0xFF 0x00 0xFF 0x00 ..} */ - - 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 -= 8, inptr0 += 16, inptr1 += 16, outptr += 8) { - - mm0 = _mm_load_si64((__m64 *)&inptr0[0]); - mm1 = _mm_load_si64((__m64 *)&inptr1[0]); - mm2 = _mm_load_si64((__m64 *)&inptr0[8]); - mm3 = _mm_load_si64((__m64 *)&inptr1[8]); - - mm4 = mm0; - mm5 = mm1; - mm0 = _mm_and_si64(mm0, mm6); - mm4 = _mm_srli_pi16(mm4, BYTE_BIT); - mm1 = _mm_and_si64(mm1, mm6); - mm5 = _mm_srli_pi16(mm5, BYTE_BIT); - mm0 = _mm_add_pi16(mm0, mm4); - mm1 = _mm_add_pi16(mm1, mm5); - - mm4 = mm2; - mm5 = mm3; - mm2 = _mm_and_si64(mm2, mm6); - mm4 = _mm_srli_pi16(mm4, BYTE_BIT); - mm3 = _mm_and_si64(mm3, mm6); - mm5 = _mm_srli_pi16(mm5, BYTE_BIT); - mm2 = _mm_add_pi16(mm2, mm4); - mm3 = _mm_add_pi16(mm3, mm5); - - mm0 = _mm_add_pi16(mm0, mm1); - mm2 = _mm_add_pi16(mm2, mm3); - mm0 = _mm_add_pi16(mm0, mm7); - mm2 = _mm_add_pi16(mm2, mm7); - mm0 = _mm_srli_pi16(mm0, 2); - mm2 = _mm_srli_pi16(mm2, 2); - - mm0 = _mm_packs_pu16(mm0, mm2); - - _mm_store_si64((__m64 *)&outptr[0], mm0); - } - } -} |