| /* |
| * Copyright (c) 2010 The VP8 project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license and patent |
| * grant that can be found in the LICENSE file in the root of the source |
| * tree. All contributing project authors may be found in the AUTHORS |
| * file in the root of the source tree. |
| */ |
| |
| |
| #include <math.h> |
| #include "subpixel.h" |
| |
| #define BLOCK_HEIGHT_WIDTH 4 |
| #define VP8_FILTER_WEIGHT 128 |
| #define VP8_FILTER_SHIFT 7 |
| |
| static const short bilinear_filters[8][2] = |
| { |
| { 128, 0 }, |
| { 112, 16 }, |
| { 96, 32 }, |
| { 80, 48 }, |
| { 64, 64 }, |
| { 48, 80 }, |
| { 32, 96 }, |
| { 16, 112 } |
| }; |
| |
| |
| extern void vp8_filter_block2d_bil_first_pass_armv6 |
| ( |
| unsigned char *src_ptr, |
| unsigned short *output_ptr, |
| unsigned int src_pixels_per_line, |
| unsigned int output_height, |
| unsigned int output_width, |
| const short *vp8_filter |
| ); |
| |
| extern void vp8_filter_block2d_bil_second_pass_armv6 |
| ( |
| unsigned short *src_ptr, |
| unsigned char *output_ptr, |
| int output_pitch, |
| unsigned int output_height, |
| unsigned int output_width, |
| const short *vp8_filter |
| ); |
| |
| /* |
| void vp8_filter_block2d_bil_first_pass_6 |
| ( |
| unsigned char *src_ptr, |
| unsigned short *output_ptr, |
| unsigned int src_pixels_per_line, |
| unsigned int output_height, |
| unsigned int output_width, |
| const short *vp8_filter |
| ) |
| { |
| unsigned int i, j; |
| |
| for ( i=0; i<output_height; i++ ) |
| { |
| for ( j=0; j<output_width; j++ ) |
| { |
| // Apply bilinear filter |
| output_ptr[j] = ( ( (int)src_ptr[0] * vp8_filter[0]) + |
| ((int)src_ptr[1] * vp8_filter[1]) + |
| (VP8_FILTER_WEIGHT/2) ) >> VP8_FILTER_SHIFT; |
| src_ptr++; |
| } |
| |
| // Next row... |
| src_ptr += src_pixels_per_line - output_width; |
| output_ptr += output_width; |
| } |
| } |
| |
| void vp8_filter_block2d_bil_second_pass_6 |
| ( |
| unsigned short *src_ptr, |
| unsigned char *output_ptr, |
| int output_pitch, |
| unsigned int output_height, |
| unsigned int output_width, |
| const short *vp8_filter |
| ) |
| { |
| unsigned int i,j; |
| int Temp; |
| |
| for ( i=0; i<output_height; i++ ) |
| { |
| for ( j=0; j<output_width; j++ ) |
| { |
| // Apply filter |
| Temp = ((int)src_ptr[0] * vp8_filter[0]) + |
| ((int)src_ptr[output_width] * vp8_filter[1]) + |
| (VP8_FILTER_WEIGHT/2); |
| output_ptr[j] = (unsigned int)(Temp >> VP8_FILTER_SHIFT); |
| src_ptr++; |
| } |
| |
| // Next row... |
| //src_ptr += src_pixels_per_line - output_width; |
| output_ptr += output_pitch; |
| } |
| } |
| */ |
| |
| void vp8_filter_block2d_bil_armv6 |
| ( |
| unsigned char *src_ptr, |
| unsigned char *output_ptr, |
| unsigned int src_pixels_per_line, |
| unsigned int dst_pitch, |
| const short *HFilter, |
| const short *VFilter, |
| int Width, |
| int Height |
| ) |
| { |
| |
| unsigned short FData[36*16]; // Temp data bufffer used in filtering |
| |
| // First filter 1-D horizontally... |
| // pixel_step = 1; |
| vp8_filter_block2d_bil_first_pass_armv6(src_ptr, FData, src_pixels_per_line, Height + 1, Width, HFilter); |
| |
| // then 1-D vertically... |
| vp8_filter_block2d_bil_second_pass_armv6(FData, output_ptr, dst_pitch, Height, Width, VFilter); |
| } |
| |
| |
| void vp8_bilinear_predict4x4_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; |
| |
| HFilter = bilinear_filters[xoffset]; |
| VFilter = bilinear_filters[yoffset]; |
| |
| vp8_filter_block2d_bil_armv6(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 4, 4); |
| } |
| |
| void vp8_bilinear_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; |
| |
| HFilter = bilinear_filters[xoffset]; |
| VFilter = bilinear_filters[yoffset]; |
| |
| vp8_filter_block2d_bil_armv6(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 8, 8); |
| } |
| |
| void vp8_bilinear_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; |
| |
| HFilter = bilinear_filters[xoffset]; |
| VFilter = bilinear_filters[yoffset]; |
| |
| vp8_filter_block2d_bil_armv6(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 8, 4); |
| } |
| |
| void vp8_bilinear_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; |
| |
| HFilter = bilinear_filters[xoffset]; |
| VFilter = bilinear_filters[yoffset]; |
| |
| vp8_filter_block2d_bil_armv6(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 16, 16); |
| } |