ref: 9484bf7f57f9908d87f0447b093443056a77d009
dir: /vp8/common/arm/filter_arm.c/
/* * Copyright (c) 2010 The VP8 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 "vpx_ports/config.h" #include <math.h> #include "subpixel.h" #include "vpx_ports/mem.h" #define BLOCK_HEIGHT_WIDTH 4 #define VP8_FILTER_WEIGHT 128 #define VP8_FILTER_SHIFT 7 DECLARE_ALIGNED(16, static const short, sub_pel_filters[8][6]) = { { 0, 0, 128, 0, 0, 0 }, // note that 1/8 pel positions are just as per alpha -0.5 bicubic { 0, -6, 123, 12, -1, 0 }, { 2, -11, 108, 36, -8, 1 }, // New 1/4 pel 6 tap filter { 0, -9, 93, 50, -6, 0 }, { 3, -16, 77, 77, -16, 3 }, // New 1/2 pel 6 tap filter { 0, -6, 50, 93, -9, 0 }, { 1, -8, 36, 108, -11, 2 }, // New 1/4 pel 6 tap filter { 0, -1, 12, 123, -6, 0 }, }; extern void vp8_filter_block2d_first_pass_armv6 ( unsigned char *src_ptr, short *output_ptr, unsigned int src_pixels_per_line, unsigned int output_width, unsigned int output_height, const short *vp8_filter ); extern void vp8_filter_block2d_second_pass_armv6 ( short *src_ptr, unsigned char *output_ptr, unsigned int output_pitch, unsigned int cnt, const short *vp8_filter ); extern void vp8_filter_block2d_first_pass_only_armv6 ( unsigned char *src_ptr, unsigned char *output_ptr, unsigned int src_pixels_per_line, unsigned int cnt, unsigned int output_pitch, const short *vp8_filter ); extern void vp8_filter_block2d_second_pass_only_armv6 ( unsigned char *src_ptr, unsigned char *output_ptr, unsigned int src_pixels_per_line, unsigned int cnt, unsigned int output_pitch, const short *vp8_filter ); #if HAVE_ARMV6 void vp8_sixtap_predict_armv6 ( unsigned char *src_ptr, int src_pixels_per_line, int xoffset, int yoffset, unsigned char *dst_ptr, int dst_pitch ) { const short *HFilter; const short *VFilter; DECLARE_ALIGNED_ARRAY(4, short, FData, 12*4); // Temp data bufffer used in filtering HFilter = sub_pel_filters[xoffset]; // 6 tap VFilter = sub_pel_filters[yoffset]; // 6 tap // Vfilter is null. First pass only if (xoffset && !yoffset) { //vp8_filter_block2d_first_pass_armv6 ( src_ptr, FData+2, src_pixels_per_line, 4, 4, HFilter ); //vp8_filter_block2d_second_pass_armv6 ( FData+2, dst_ptr, dst_pitch, 4, VFilter ); vp8_filter_block2d_first_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 4, dst_pitch, HFilter); } // Hfilter is null. Second pass only else if (!xoffset && yoffset) { vp8_filter_block2d_second_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 4, dst_pitch, VFilter); } else { // Vfilter is a 4 tap filter if (yoffset & 0x1) vp8_filter_block2d_first_pass_armv6(src_ptr - src_pixels_per_line, FData + 1, src_pixels_per_line, 4, 7, HFilter); // Vfilter is 6 tap filter else vp8_filter_block2d_first_pass_armv6(src_ptr - (2 * src_pixels_per_line), FData, src_pixels_per_line, 4, 9, HFilter); vp8_filter_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 4, VFilter); } } /* void vp8_sixtap_predict8x4_armv6 ( unsigned char *src_ptr, int src_pixels_per_line, int xoffset, int yoffset, unsigned char *dst_ptr, int dst_pitch ) { const short *HFilter; const short *VFilter; DECLARE_ALIGNED_ARRAY(4, short, FData, 16*8); // Temp data bufffer used in filtering HFilter = sub_pel_filters[xoffset]; // 6 tap VFilter = sub_pel_filters[yoffset]; // 6 tap // if (xoffset && !yoffset) // { // vp8_filter_block2d_first_pass_only_armv6 ( src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, HFilter ); // } // Hfilter is null. Second pass only // else if (!xoffset && yoffset) // { // vp8_filter_block2d_second_pass_only_armv6 ( src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, VFilter ); // } // else // { // if (yoffset & 0x1) // vp8_filter_block2d_first_pass_armv6 ( src_ptr-src_pixels_per_line, FData+1, src_pixels_per_line, 8, 7, HFilter ); // else vp8_filter_block2d_first_pass_armv6 ( src_ptr-(2*src_pixels_per_line), FData, src_pixels_per_line, 8, 9, HFilter ); vp8_filter_block2d_second_pass_armv6 ( FData+2, dst_ptr, dst_pitch, 4, 8, VFilter ); // } } */ void vp8_sixtap_predict8x8_armv6 ( unsigned char *src_ptr, int src_pixels_per_line, int xoffset, int yoffset, unsigned char *dst_ptr, int dst_pitch ) { const short *HFilter; const short *VFilter; DECLARE_ALIGNED_ARRAY(4, short, FData, 16*8); // Temp data bufffer used in filtering HFilter = sub_pel_filters[xoffset]; // 6 tap VFilter = sub_pel_filters[yoffset]; // 6 tap if (xoffset && !yoffset) { vp8_filter_block2d_first_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, HFilter); } // Hfilter is null. Second pass only else if (!xoffset && yoffset) { vp8_filter_block2d_second_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, VFilter); } else { if (yoffset & 0x1) vp8_filter_block2d_first_pass_armv6(src_ptr - src_pixels_per_line, FData + 1, src_pixels_per_line, 8, 11, HFilter); else vp8_filter_block2d_first_pass_armv6(src_ptr - (2 * src_pixels_per_line), FData, src_pixels_per_line, 8, 13, HFilter); vp8_filter_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 8, VFilter); } } void vp8_sixtap_predict16x16_armv6 ( unsigned char *src_ptr, int src_pixels_per_line, int xoffset, int yoffset, unsigned char *dst_ptr, int dst_pitch ) { const short *HFilter; const short *VFilter; DECLARE_ALIGNED_ARRAY(4, short, FData, 24*16); // Temp data bufffer used in filtering HFilter = sub_pel_filters[xoffset]; // 6 tap VFilter = sub_pel_filters[yoffset]; // 6 tap if (xoffset && !yoffset) { vp8_filter_block2d_first_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 16, dst_pitch, HFilter); } // Hfilter is null. Second pass only else if (!xoffset && yoffset) { vp8_filter_block2d_second_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 16, dst_pitch, VFilter); } else { if (yoffset & 0x1) vp8_filter_block2d_first_pass_armv6(src_ptr - src_pixels_per_line, FData + 1, src_pixels_per_line, 16, 19, HFilter); else vp8_filter_block2d_first_pass_armv6(src_ptr - (2 * src_pixels_per_line), FData, src_pixels_per_line, 16, 21, HFilter); vp8_filter_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 16, VFilter); } } #endif