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276a65b63d
--HG-- rename : media/libvpx/vp8/decoder/arm/armv6/dequant_idct_v6.asm => media/libvpx/vp8/common/arm/armv6/dequant_idct_v6.asm rename : media/libvpx/vp8/decoder/arm/armv6/dequantize_v6.asm => media/libvpx/vp8/common/arm/armv6/dequantize_v6.asm rename : media/libvpx/vp8/decoder/arm/armv6/idct_blk_v6.c => media/libvpx/vp8/common/arm/armv6/idct_blk_v6.c rename : media/libvpx/vp8/encoder/arm/armv6/vp8_mse16x16_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_mse16x16_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_sad16x16_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_sad16x16_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance16x16_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance16x16_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance8x8_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance8x8_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance_halfpixvar16x16_h_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance_halfpixvar16x16_h_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance_halfpixvar16x16_hv_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance_halfpixvar16x16_hv_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance_halfpixvar16x16_v_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance_halfpixvar16x16_v_armv6.asm rename : media/libvpx/vp8/decoder/arm/dequantize_arm.c => media/libvpx/vp8/common/arm/dequantize_arm.c rename : media/libvpx/vp8/decoder/arm/dequantize_arm.h => media/libvpx/vp8/common/arm/dequantize_arm.h rename : media/libvpx/vp8/decoder/arm/neon/dequant_idct_neon.asm => media/libvpx/vp8/common/arm/neon/dequant_idct_neon.asm rename : media/libvpx/vp8/decoder/arm/neon/dequantizeb_neon.asm => media/libvpx/vp8/common/arm/neon/dequantizeb_neon.asm rename : media/libvpx/vp8/decoder/arm/neon/idct_blk_neon.c => media/libvpx/vp8/common/arm/neon/idct_blk_neon.c rename : media/libvpx/vp8/decoder/arm/neon/idct_dequant_0_2x_neon.asm => media/libvpx/vp8/common/arm/neon/idct_dequant_0_2x_neon.asm rename : media/libvpx/vp8/decoder/arm/neon/idct_dequant_full_2x_neon.asm => media/libvpx/vp8/common/arm/neon/idct_dequant_full_2x_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/sad16_neon.asm => media/libvpx/vp8/common/arm/neon/sad16_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/sad8_neon.asm => media/libvpx/vp8/common/arm/neon/sad8_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/variance_neon.asm => media/libvpx/vp8/common/arm/neon/variance_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/vp8_mse16x16_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_mse16x16_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/vp8_subpixelvariance16x16_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_subpixelvariance16x16_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/vp8_subpixelvariance16x16s_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_subpixelvariance16x16s_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/vp8_subpixelvariance8x8_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_subpixelvariance8x8_neon.asm rename : media/libvpx/vp8/encoder/arm/variance_arm.c => media/libvpx/vp8/common/arm/variance_arm.c rename : media/libvpx/vp8/encoder/arm/variance_arm.h => media/libvpx/vp8/common/arm/variance_arm.h rename : media/libvpx/vp8/decoder/dequantize.c => media/libvpx/vp8/common/dequantize.c rename : media/libvpx/vp8/decoder/dequantize.h => media/libvpx/vp8/common/dequantize.h rename : media/libvpx/vp8/decoder/idct_blk.c => media/libvpx/vp8/common/idct_blk.c rename : media/libvpx/vp8/encoder/sad_c.c => media/libvpx/vp8/common/sad_c.c rename : media/libvpx/vp8/encoder/variance.h => media/libvpx/vp8/common/variance.h rename : media/libvpx/vp8/encoder/variance_c.c => media/libvpx/vp8/common/variance_c.c rename : media/libvpx/vp8/decoder/x86/dequantize_mmx.asm => media/libvpx/vp8/common/x86/dequantize_mmx.asm rename : media/libvpx/vp8/decoder/x86/dequantize_x86.h => media/libvpx/vp8/common/x86/dequantize_x86.h rename : media/libvpx/vp8/decoder/x86/idct_blk_mmx.c => media/libvpx/vp8/common/x86/idct_blk_mmx.c rename : media/libvpx/vp8/decoder/x86/idct_blk_sse2.c => media/libvpx/vp8/common/x86/idct_blk_sse2.c rename : media/libvpx/vp8/encoder/x86/sad_mmx.asm => media/libvpx/vp8/common/x86/sad_mmx.asm rename : media/libvpx/vp8/encoder/x86/sad_sse2.asm => media/libvpx/vp8/common/x86/sad_sse2.asm rename : media/libvpx/vp8/encoder/x86/sad_sse3.asm => media/libvpx/vp8/common/x86/sad_sse3.asm rename : media/libvpx/vp8/encoder/x86/sad_sse4.asm => media/libvpx/vp8/common/x86/sad_sse4.asm rename : media/libvpx/vp8/encoder/x86/sad_ssse3.asm => media/libvpx/vp8/common/x86/sad_ssse3.asm rename : media/libvpx/vp8/encoder/x86/variance_impl_mmx.asm => media/libvpx/vp8/common/x86/variance_impl_mmx.asm rename : media/libvpx/vp8/encoder/x86/variance_impl_sse2.asm => media/libvpx/vp8/common/x86/variance_impl_sse2.asm rename : media/libvpx/vp8/encoder/x86/variance_impl_ssse3.asm => media/libvpx/vp8/common/x86/variance_impl_ssse3.asm rename : media/libvpx/vp8/encoder/x86/variance_mmx.c => media/libvpx/vp8/common/x86/variance_mmx.c rename : media/libvpx/vp8/encoder/x86/variance_sse2.c => media/libvpx/vp8/common/x86/variance_sse2.c rename : media/libvpx/vp8/encoder/x86/variance_ssse3.c => media/libvpx/vp8/common/x86/variance_ssse3.c rename : media/libvpx/vp8/encoder/x86/variance_x86.h => media/libvpx/vp8/common/x86/variance_x86.h rename : media/libvpx/vp8/encoder/arm/armv6/vp8_fast_fdct4x4_armv6.asm => media/libvpx/vp8/encoder/arm/armv6/vp8_short_fdct4x4_armv6.asm rename : media/libvpx/vp8/common/defaultcoefcounts.c => media/libvpx/vp8/encoder/defaultcoefcounts.h
205 lines
4.6 KiB
C
205 lines
4.6 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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/****************************************************************************
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* Notes:
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*
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* This implementation makes use of 16 bit fixed point verio of two multiply
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* constants:
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* 1. sqrt(2) * cos (pi/8)
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* 2. sqrt(2) * sin (pi/8)
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* Becuase the first constant is bigger than 1, to maintain the same 16 bit
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* fixed point precision as the second one, we use a trick of
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* x * a = x + x*(a-1)
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* so
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* x * sqrt(2) * cos (pi/8) = x + x * (sqrt(2) *cos(pi/8)-1).
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**************************************************************************/
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static const int cospi8sqrt2minus1 = 20091;
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static const int sinpi8sqrt2 = 35468;
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void vp8_short_idct4x4llm_c(short *input, unsigned char *pred_ptr,
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int pred_stride, unsigned char *dst_ptr,
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int dst_stride)
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{
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int i;
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int r, c;
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int a1, b1, c1, d1;
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short output[16];
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short *ip = input;
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short *op = output;
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int temp1, temp2;
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int shortpitch = 4;
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for (i = 0; i < 4; i++)
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{
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a1 = ip[0] + ip[8];
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b1 = ip[0] - ip[8];
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temp1 = (ip[4] * sinpi8sqrt2) >> 16;
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temp2 = ip[12] + ((ip[12] * cospi8sqrt2minus1) >> 16);
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c1 = temp1 - temp2;
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temp1 = ip[4] + ((ip[4] * cospi8sqrt2minus1) >> 16);
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temp2 = (ip[12] * sinpi8sqrt2) >> 16;
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d1 = temp1 + temp2;
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op[shortpitch*0] = a1 + d1;
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op[shortpitch*3] = a1 - d1;
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op[shortpitch*1] = b1 + c1;
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op[shortpitch*2] = b1 - c1;
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ip++;
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op++;
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}
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ip = output;
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op = output;
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for (i = 0; i < 4; i++)
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{
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a1 = ip[0] + ip[2];
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b1 = ip[0] - ip[2];
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temp1 = (ip[1] * sinpi8sqrt2) >> 16;
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temp2 = ip[3] + ((ip[3] * cospi8sqrt2minus1) >> 16);
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c1 = temp1 - temp2;
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temp1 = ip[1] + ((ip[1] * cospi8sqrt2minus1) >> 16);
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temp2 = (ip[3] * sinpi8sqrt2) >> 16;
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d1 = temp1 + temp2;
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op[0] = (a1 + d1 + 4) >> 3;
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op[3] = (a1 - d1 + 4) >> 3;
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op[1] = (b1 + c1 + 4) >> 3;
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op[2] = (b1 - c1 + 4) >> 3;
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ip += shortpitch;
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op += shortpitch;
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}
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ip = output;
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for (r = 0; r < 4; r++)
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{
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for (c = 0; c < 4; c++)
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{
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int a = ip[c] + pred_ptr[c] ;
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if (a < 0)
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a = 0;
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if (a > 255)
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a = 255;
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dst_ptr[c] = (unsigned char) a ;
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}
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ip += 4;
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dst_ptr += dst_stride;
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pred_ptr += pred_stride;
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}
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}
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void vp8_dc_only_idct_add_c(short input_dc, unsigned char *pred_ptr,
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int pred_stride, unsigned char *dst_ptr,
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int dst_stride)
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{
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int a1 = ((input_dc + 4) >> 3);
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int r, c;
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for (r = 0; r < 4; r++)
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{
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for (c = 0; c < 4; c++)
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{
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int a = a1 + pred_ptr[c] ;
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if (a < 0)
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a = 0;
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if (a > 255)
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a = 255;
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dst_ptr[c] = (unsigned char) a ;
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}
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dst_ptr += dst_stride;
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pred_ptr += pred_stride;
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}
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}
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void vp8_short_inv_walsh4x4_c(short *input, short *mb_dqcoeff)
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{
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short output[16];
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int i;
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int a1, b1, c1, d1;
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int a2, b2, c2, d2;
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short *ip = input;
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short *op = output;
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for (i = 0; i < 4; i++)
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{
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a1 = ip[0] + ip[12];
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b1 = ip[4] + ip[8];
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c1 = ip[4] - ip[8];
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d1 = ip[0] - ip[12];
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op[0] = a1 + b1;
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op[4] = c1 + d1;
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op[8] = a1 - b1;
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op[12] = d1 - c1;
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ip++;
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op++;
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}
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ip = output;
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op = output;
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for (i = 0; i < 4; i++)
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{
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a1 = ip[0] + ip[3];
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b1 = ip[1] + ip[2];
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c1 = ip[1] - ip[2];
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d1 = ip[0] - ip[3];
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a2 = a1 + b1;
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b2 = c1 + d1;
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c2 = a1 - b1;
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d2 = d1 - c1;
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op[0] = (a2 + 3) >> 3;
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op[1] = (b2 + 3) >> 3;
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op[2] = (c2 + 3) >> 3;
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op[3] = (d2 + 3) >> 3;
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ip += 4;
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op += 4;
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}
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for(i = 0; i < 16; i++)
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{
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mb_dqcoeff[i * 16] = output[i];
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}
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}
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void vp8_short_inv_walsh4x4_1_c(short *input, short *mb_dqcoeff)
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{
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int i;
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int a1;
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a1 = ((input[0] + 3) >> 3);
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for(i = 0; i < 16; i++)
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{
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mb_dqcoeff[i * 16] = a1;
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}
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}
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