| /* |
| * Copyright (c) 2010 The WebM 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 <stdlib.h> |
| #include "filter.h" |
| #include "vpx_ports/mem.h" |
| |
| DECLARE_ALIGNED(16, const short, vp8_bilinear_filters[SUBPEL_SHIFTS][2]) = |
| { |
| #if SUBPEL_SHIFTS==16 |
| { 128, 0 }, |
| { 120, 8 }, |
| { 112, 16 }, |
| { 104, 24 }, |
| { 96, 32 }, |
| { 88, 40 }, |
| { 80, 48 }, |
| { 72, 56 }, |
| { 64, 64 }, |
| { 56, 72 }, |
| { 48, 80 }, |
| { 40, 88 }, |
| { 32, 96 }, |
| { 24, 104 }, |
| { 16, 112 }, |
| { 8, 120 } |
| #else |
| { 128, 0 }, |
| { 112, 16 }, |
| { 96, 32 }, |
| { 80, 48 }, |
| { 64, 64 }, |
| { 48, 80 }, |
| { 32, 96 }, |
| { 16, 112 } |
| #endif /* SUBPEL_SHIFTS==16 */ |
| }; |
| |
| #if CONFIG_ENHANCED_INTERP |
| #define FILTER_ALPHA 60 |
| DECLARE_ALIGNED(16, const short, vp8_sub_pel_filters[SUBPEL_SHIFTS][2*INTERP_EXTEND]) = |
| { |
| /* Generated using MATLAB: |
| * alpha = 0.6; |
| * b=intfilt(8,4,alpha); |
| * bi=round(128*b); |
| * ba=flipud(reshape([bi 0], 8, 8)); |
| * disp(num2str(ba, '%d,')) |
| */ |
| #if SUBPEL_SHIFTS==16 |
| #if FILTER_ALPHA == 75 |
| /* alpha = 0.75 */ |
| { 0, 0, 0, 128, 0, 0, 0, 0}, |
| {-1, 2, -6, 126, 9, -3, 2, -1}, |
| {-1, 4, -11, 123, 18, -7, 3, -1}, |
| {-2, 6, -16, 119, 28, -10, 5, -2}, |
| {-2, 7, -19, 113, 38, -13, 6, -2}, |
| {-3, 8, -21, 106, 49, -16, 7, -2}, |
| {-3, 9, -22, 99, 59, -19, 8, -3}, |
| {-3, 9, -23, 90, 70, -21, 9, -3}, |
| {-3, 9, -22, 80, 80, -22, 9, -3}, |
| {-3, 9, -21, 70, 90, -23, 9, -3}, |
| {-3, 8, -19, 59, 99, -22, 9, -3}, |
| {-2, 7, -16, 49, 106, -21, 8, -3}, |
| {-2, 6, -13, 38, 113, -19, 7, -2}, |
| {-2, 5, -10, 28, 119, -16, 6, -2}, |
| {-1, 3, -7, 18, 123, -11, 4, -1}, |
| {-1, 2, -3, 9, 126, -6, 2, -1} |
| #elif FILTER_ALPHA == 70 |
| /* alpha = 0.70 */ |
| { 0, 0, 0, 128, 0, 0, 0, 0}, |
| { 0, 2, -6, 126, 8, -3, 1, 0}, |
| {-1, 4, -11, 123, 18, -7, 3, -1}, |
| {-1, 5, -15, 119, 27, -10, 4, -1}, |
| {-2, 6, -18, 113, 38, -13, 5, -1}, |
| {-2, 7, -20, 106, 49, -16, 6, -2}, |
| {-2, 8, -22, 98, 59, -18, 7, -2}, |
| {-2, 8, -22, 89, 69, -20, 8, -2}, |
| {-2, 8, -21, 79, 79, -21, 8, -2}, |
| {-2, 8, -20, 69, 89, -22, 8, -2}, |
| {-2, 7, -18, 59, 98, -22, 8, -2}, |
| {-2, 6, -16, 49, 106, -20, 7, -2}, |
| {-1, 5, -13, 38, 113, -18, 6, -2}, |
| {-1, 4, -10, 27, 119, -15, 5, -1}, |
| {-1, 3, -7, 18, 123, -11, 4, -1}, |
| { 0, 1, -3, 8, 126, -6, 2, 0} |
| #elif FILTER_ALPHA == 65 |
| /* alpha = 0.65 */ |
| { 0, 0, 0, 128, 0, 0, 0, 0}, |
| { 0, 2, -6, 126, 8, -3, 1, 0}, |
| {-1, 3, -10, 123, 18, -6, 2, -1}, |
| {-1, 5, -14, 118, 27, -10, 4, -1}, |
| {-1, 5, -17, 112, 38, -13, 5, -1}, |
| {-2, 6, -19, 106, 48, -15, 5, -1}, |
| {-2, 7, -21, 98, 59, -17, 6, -2}, |
| {-2, 7, -21, 89, 69, -19, 7, -2}, |
| {-2, 7, -20, 79, 79, -20, 7, -2}, |
| {-2, 7, -19, 69, 89, -21, 7, -2}, |
| {-2, 6, -17, 59, 98, -21, 7, -2}, |
| {-1, 5, -15, 48, 106, -19, 6, -2}, |
| {-1, 5, -13, 38, 112, -17, 5, -1}, |
| {-1, 4, -10, 27, 118, -14, 5, -1}, |
| {-1, 2, -6, 18, 123, -10, 3, -1}, |
| {0, 1, -3, 8, 126, -6, 2, 0} |
| #elif FILTER_ALPHA == 60 |
| /* alpha = 0.60 */ |
| { 0, 0, 0, 128, 0, 0, 0, 0}, |
| { 0, 2, -6, 126, 8, -3, 1, 0}, |
| {-1, 3, -10, 123, 18, -6, 2, -1}, |
| {-1, 4, -14, 118, 28, -9, 3, -1}, |
| {-1, 5, -17, 112, 38, -12, 4, -1}, |
| {-1, 6, -19, 105, 48, -15, 5, -1}, |
| {-1, 6, -20, 97, 58, -17, 6, -1}, |
| {-1, 6, -20, 88, 69, -19, 6, -1}, |
| {-1, 6, -20, 79, 79, -20, 6, -1}, |
| {-1, 6, -19, 69, 88, -20, 6, -1}, |
| {-1, 6, -17, 58, 97, -20, 6, -1}, |
| {-1, 5, -15, 48, 105, -19, 6, -1}, |
| {-1, 4, -12, 38, 112, -17, 5, -1}, |
| {-1, 3, -9, 28, 118, -14, 4, -1}, |
| {-1, 2, -6, 18, 123, -10, 3, -1}, |
| {0, 1, -3, 8, 126, -6, 2, 0} |
| #elif FILTER_ALPHA == 55 |
| /* alpha = 0.55 */ |
| {0, 0, 0, 128, 0, 0, 0, 0}, |
| {0, 1, -5, 126, 8, -3, 1, 0}, |
| {-1, 2, -10, 123, 18, -6, 2, 0}, |
| {-1, 4, -13, 118, 27, -9, 3, -1}, |
| {-1, 5, -16, 112, 37, -12, 4, -1}, |
| {-1, 5, -18, 105, 48, -14, 4, -1}, |
| {-1, 5, -19, 97, 58, -16, 5, -1}, |
| {-1, 6, -19, 88, 68, -18, 5, -1}, |
| {-1, 6, -19, 78, 78, -19, 6, -1}, |
| {-1, 5, -18, 68, 88, -19, 6, -1}, |
| {-1, 5, -16, 58, 97, -19, 5, -1}, |
| {-1, 4, -14, 48, 105, -18, 5, -1}, |
| {-1, 4, -12, 37, 112, -16, 5, -1}, |
| {-1, 3, -9, 27, 118, -13, 4, -1}, |
| {0, 2, -6, 18, 123, -10, 2, -1}, |
| {0, 1, -3, 8, 126, -5, 1, 0} |
| #endif /* FILTER_ALPHA */ |
| #else /* SUBPEL_SHIFTS==16 */ |
| #if FILTER_ALPHA == 75 |
| /* alpha = 0.75 */ |
| { 0, 0, 0, 128, 0, 0, 0, 0}, |
| {-1, 4, -11, 123, 18, -7, 3, -1}, |
| {-2, 7, -19, 113, 38, -13, 6, -2}, |
| {-3, 9, -22, 99, 59, -19, 8, -3}, |
| {-3, 9, -22, 80, 80, -22, 9, -3}, |
| {-3, 8, -19, 59, 99, -22, 9, -3}, |
| {-2, 6, -13, 38, 113, -19, 7, -2}, |
| {-1, 3, -7, 18, 123, -11, 4, -1} |
| #elif FILTER_ALPHA == 70 |
| /* alpha = 0.70 */ |
| { 0, 0, 0, 128, 0, 0, 0, 0}, |
| {-1, 4, -11, 123, 18, -7, 3, -1}, |
| {-2, 6, -18, 113, 38, -13, 5, -1}, |
| {-2, 8, -22, 98, 59, -18, 7, -2}, |
| {-2, 8, -21, 79, 79, -21, 8, -2}, |
| {-2, 7, -18, 59, 98, -22, 8, -2}, |
| {-1, 5, -13, 38, 113, -18, 6, -2}, |
| {-1, 3, -7, 18, 123, -11, 4, -1} |
| #elif FILTER_ALPHA == 65 |
| /* alpha = 0.65 */ |
| { 0, 0, 0, 128, 0, 0, 0, 0}, |
| {-1, 3, -10, 123, 18, -6, 2, -1}, |
| {-1, 5, -17, 112, 38, -13, 5, -1}, |
| {-2, 7, -21, 98, 59, -17, 6, -2}, |
| {-2, 7, -20, 79, 79, -20, 7, -2}, |
| {-2, 6, -17, 59, 98, -21, 7, -2}, |
| {-1, 5, -13, 38, 112, -17, 5, -1}, |
| {-1, 2, -6, 18, 123, -10, 3, -1} |
| #elif FILTER_ALPHA == 60 |
| /* alpha = 0.60 */ |
| { 0, 0, 0, 128, 0, 0, 0, 0}, |
| {-1, 3, -10, 123, 18, -6, 2, -1}, |
| {-1, 5, -17, 112, 38, -12, 4, -1}, |
| {-1, 6, -20, 97, 58, -17, 6, -1}, |
| {-1, 6, -20, 79, 79, -20, 6, -1}, |
| {-1, 6, -17, 58, 97, -20, 6, -1}, |
| {-1, 4, -12, 38, 112, -17, 5, -1}, |
| {-1, 2, -6, 18, 123, -10, 3, -1} |
| #elif FILTER_ALPHA == 55 |
| /* alpha = 0.55 */ |
| { 0, 0, 0, 128, 0, 0, 0, 0}, |
| {-1, 2, -10, 123, 18, -6, 2, 0}, |
| {-1, 5, -16, 112, 37, -12, 4, -1}, |
| {-1, 5, -19, 97, 58, -16, 5, -1}, |
| {-1, 6, -19, 78, 78, -19, 6, -1}, |
| {-1, 5, -16, 58, 97, -19, 5, -1}, |
| {-1, 4, -12, 37, 112, -16, 5, -1}, |
| { 0, 2, -6, 18, 123, -10, 2, -1} |
| #endif /* FILTER_ALPHA */ |
| #endif /* SUBPEL_SHIFTS==16 */ |
| }; |
| |
| #else // CONFIG_ENHANCED_INTERP |
| |
| DECLARE_ALIGNED(16, const short, vp8_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 }, |
| }; |
| |
| #endif // CONFIG_ENHANCED_INTERP |
| |
| static void filter_block2d_first_pass |
| ( |
| unsigned char *src_ptr, |
| int *output_ptr, |
| unsigned int src_pixels_per_line, |
| unsigned int pixel_step, |
| 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++) |
| { |
| #if INTERP_EXTEND == 3 |
| Temp = ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[0]) + |
| ((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[1]) + |
| ((int)src_ptr[0] * vp8_filter[2]) + |
| ((int)src_ptr[pixel_step] * vp8_filter[3]) + |
| ((int)src_ptr[2*pixel_step] * vp8_filter[4]) + |
| ((int)src_ptr[3*pixel_step] * vp8_filter[5]) + |
| (VP8_FILTER_WEIGHT >> 1); /* Rounding */ |
| #elif INTERP_EXTEND == 4 |
| Temp = ((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[0]) + |
| ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[1]) + |
| ((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[2]) + |
| ((int)src_ptr[0] * vp8_filter[3]) + |
| ((int)src_ptr[pixel_step] * vp8_filter[4]) + |
| ((int)src_ptr[2 * pixel_step] * vp8_filter[5]) + |
| ((int)src_ptr[3 * pixel_step] * vp8_filter[6]) + |
| ((int)src_ptr[4 * pixel_step] * vp8_filter[7]) + |
| (VP8_FILTER_WEIGHT >> 1); /* Rounding */ |
| #elif INTERP_EXTEND == 5 |
| Temp = ((int)src_ptr[-4 * (int)pixel_step] * vp8_filter[0]) + |
| ((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[1]) + |
| ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[2]) + |
| ((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[3]) + |
| ((int)src_ptr[0] * vp8_filter[4]) + |
| ((int)src_ptr[pixel_step] * vp8_filter[5]) + |
| ((int)src_ptr[2 * pixel_step] * vp8_filter[6]) + |
| ((int)src_ptr[3 * pixel_step] * vp8_filter[7]) + |
| ((int)src_ptr[4 * pixel_step] * vp8_filter[8]) + |
| ((int)src_ptr[5 * pixel_step] * vp8_filter[9]) + |
| (VP8_FILTER_WEIGHT >> 1); /* Rounding */ |
| #endif |
| |
| /* Normalize back to 0-255 */ |
| Temp = Temp >> VP8_FILTER_SHIFT; |
| |
| if (Temp < 0) |
| Temp = 0; |
| else if (Temp > 255) |
| Temp = 255; |
| |
| output_ptr[j] = Temp; |
| src_ptr++; |
| } |
| |
| /* Next row... */ |
| src_ptr += src_pixels_per_line - output_width; |
| output_ptr += output_width; |
| } |
| } |
| |
| static void filter_block2d_second_pass |
| ( |
| int *src_ptr, |
| unsigned char *output_ptr, |
| int output_pitch, |
| unsigned int src_pixels_per_line, |
| unsigned int pixel_step, |
| 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 */ |
| #if INTERP_EXTEND == 3 |
| Temp = ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[0]) + |
| ((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[1]) + |
| ((int)src_ptr[0] * vp8_filter[2]) + |
| ((int)src_ptr[pixel_step] * vp8_filter[3]) + |
| ((int)src_ptr[2*pixel_step] * vp8_filter[4]) + |
| ((int)src_ptr[3*pixel_step] * vp8_filter[5]) + |
| (VP8_FILTER_WEIGHT >> 1); /* Rounding */ |
| #elif INTERP_EXTEND == 4 |
| Temp = ((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[0]) + |
| ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[1]) + |
| ((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[2]) + |
| ((int)src_ptr[0] * vp8_filter[3]) + |
| ((int)src_ptr[pixel_step] * vp8_filter[4]) + |
| ((int)src_ptr[2 * pixel_step] * vp8_filter[5]) + |
| ((int)src_ptr[3 * pixel_step] * vp8_filter[6]) + |
| ((int)src_ptr[4 * pixel_step] * vp8_filter[7]) + |
| (VP8_FILTER_WEIGHT >> 1); /* Rounding */ |
| #elif INTERP_EXTEND == 5 |
| Temp = ((int)src_ptr[-4 * (int)pixel_step] * vp8_filter[0]) + |
| ((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[1]) + |
| ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[2]) + |
| ((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[3]) + |
| ((int)src_ptr[0] * vp8_filter[4]) + |
| ((int)src_ptr[pixel_step] * vp8_filter[5]) + |
| ((int)src_ptr[2 * pixel_step] * vp8_filter[6]) + |
| ((int)src_ptr[3 * pixel_step] * vp8_filter[7]) + |
| ((int)src_ptr[4 * pixel_step] * vp8_filter[8]) + |
| ((int)src_ptr[5 * pixel_step] * vp8_filter[9]) + |
| (VP8_FILTER_WEIGHT >> 1); /* Rounding */ |
| #endif |
| |
| /* Normalize back to 0-255 */ |
| Temp = Temp >> VP8_FILTER_SHIFT; |
| |
| if (Temp < 0) |
| Temp = 0; |
| else if (Temp > 255) |
| Temp = 255; |
| |
| output_ptr[j] = (unsigned char)Temp; |
| src_ptr++; |
| } |
| |
| /* Start next row */ |
| src_ptr += src_pixels_per_line - output_width; |
| output_ptr += output_pitch; |
| } |
| } |
| |
| /* |
| * The only functional difference between filter_block2d_second_pass() |
| * and this function is that filter_block2d_second_pass() does a sixtap |
| * filter on the input and stores it in the output. This function |
| * (filter_block2d_second_pass_avg()) does a sixtap filter on the input, |
| * and then averages that with the content already present in the output |
| * ((filter_result + dest + 1) >> 1) and stores that in the output. |
| */ |
| static void filter_block2d_second_pass_avg |
| ( |
| int *src_ptr, |
| unsigned char *output_ptr, |
| int output_pitch, |
| unsigned int src_pixels_per_line, |
| unsigned int pixel_step, |
| 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 */ |
| #if INTERP_EXTEND == 3 |
| Temp = ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[0]) + |
| ((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[1]) + |
| ((int)src_ptr[0] * vp8_filter[2]) + |
| ((int)src_ptr[pixel_step] * vp8_filter[3]) + |
| ((int)src_ptr[2*pixel_step] * vp8_filter[4]) + |
| ((int)src_ptr[3*pixel_step] * vp8_filter[5]) + |
| (VP8_FILTER_WEIGHT >> 1); /* Rounding */ |
| #elif INTERP_EXTEND == 4 |
| Temp = ((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[0]) + |
| ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[1]) + |
| ((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[2]) + |
| ((int)src_ptr[0] * vp8_filter[3]) + |
| ((int)src_ptr[pixel_step] * vp8_filter[4]) + |
| ((int)src_ptr[2 * pixel_step] * vp8_filter[5]) + |
| ((int)src_ptr[3 * pixel_step] * vp8_filter[6]) + |
| ((int)src_ptr[4 * pixel_step] * vp8_filter[7]) + |
| (VP8_FILTER_WEIGHT >> 1); /* Rounding */ |
| #elif INTERP_EXTEND == 5 |
| Temp = ((int)src_ptr[-4 * (int)pixel_step] * vp8_filter[0]) + |
| ((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[1]) + |
| ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[2]) + |
| ((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[3]) + |
| ((int)src_ptr[0] * vp8_filter[4]) + |
| ((int)src_ptr[pixel_step] * vp8_filter[5]) + |
| ((int)src_ptr[2 * pixel_step] * vp8_filter[6]) + |
| ((int)src_ptr[3 * pixel_step] * vp8_filter[7]) + |
| ((int)src_ptr[4 * pixel_step] * vp8_filter[8]) + |
| ((int)src_ptr[5 * pixel_step] * vp8_filter[9]) + |
| (VP8_FILTER_WEIGHT >> 1); /* Rounding */ |
| #endif |
| |
| /* Normalize back to 0-255 */ |
| Temp = Temp >> VP8_FILTER_SHIFT; |
| |
| if (Temp < 0) |
| Temp = 0; |
| else if (Temp > 255) |
| Temp = 255; |
| |
| output_ptr[j] = (unsigned char) ((output_ptr[j] + Temp + 1) >> 1); |
| src_ptr++; |
| } |
| |
| /* Start next row */ |
| src_ptr += src_pixels_per_line - output_width; |
| output_ptr += output_pitch; |
| } |
| } |
| |
| static void filter_block2d |
| ( |
| unsigned char *src_ptr, |
| unsigned char *output_ptr, |
| unsigned int src_pixels_per_line, |
| int output_pitch, |
| const short *HFilter, |
| const short *VFilter |
| ) |
| { |
| int FData[(3+INTERP_EXTEND*2)*4]; /* Temp data buffer used in filtering */ |
| |
| /* First filter 1-D horizontally... */ |
| filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1, |
| 3+INTERP_EXTEND*2, 4, HFilter); |
| |
| /* then filter verticaly... */ |
| filter_block2d_second_pass(FData + 4*(INTERP_EXTEND-1), output_ptr, output_pitch, 4, 4, 4, 4, VFilter); |
| } |
| |
| |
| void vp8_sixtap_predict_c |
| ( |
| 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 = vp8_sub_pel_filters[xoffset]; /* 6 tap */ |
| VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */ |
| |
| filter_block2d(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter); |
| } |
| void vp8_sixtap_predict8x8_c |
| ( |
| 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; |
| // int FData[(7+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */ |
| int FData[(7+INTERP_EXTEND*2)*8]; /* Temp data buffer used in filtering */ |
| |
| HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */ |
| VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */ |
| |
| /* First filter 1-D horizontally... */ |
| filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1, |
| 7+INTERP_EXTEND*2, 8, HFilter); |
| |
| |
| /* then filter verticaly... */ |
| filter_block2d_second_pass(FData + 8*(INTERP_EXTEND-1), dst_ptr, dst_pitch, 8, 8, 8, 8, VFilter); |
| |
| } |
| |
| void vp8_sixtap_predict_avg8x8_c |
| ( |
| 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; |
| // int FData[(7+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */ |
| int FData[(7+INTERP_EXTEND*2)*8]; /* Temp data buffer used in filtering */ |
| |
| HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */ |
| VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */ |
| |
| /* First filter 1-D horizontally... */ |
| filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1, |
| 7+INTERP_EXTEND*2, 8, HFilter); |
| |
| /* then filter verticaly... */ |
| filter_block2d_second_pass_avg(FData + 8*(INTERP_EXTEND-1), dst_ptr, dst_pitch, 8, 8, 8, 8, VFilter); |
| } |
| |
| void vp8_sixtap_predict8x4_c |
| ( |
| 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; |
| // int FData[(7+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */ |
| int FData[(3+INTERP_EXTEND*2)*8]; /* Temp data buffer used in filtering */ |
| |
| HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */ |
| VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */ |
| |
| /* First filter 1-D horizontally... */ |
| filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1, |
| 3+INTERP_EXTEND*2, 8, HFilter); |
| |
| |
| /* then filter verticaly... */ |
| filter_block2d_second_pass(FData + 8*(INTERP_EXTEND-1), dst_ptr, dst_pitch, 8, 8, 4, 8, VFilter); |
| |
| } |
| |
| void vp8_sixtap_predict16x16_c |
| ( |
| 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; |
| // int FData[(15+INTERP_EXTEND*2)*24]; /* Temp data buffer used in filtering */ |
| int FData[(15+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */ |
| |
| |
| HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */ |
| VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */ |
| |
| /* First filter 1-D horizontally... */ |
| filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1, |
| 15+INTERP_EXTEND*2, 16, HFilter); |
| |
| /* then filter verticaly... */ |
| filter_block2d_second_pass(FData + 16*(INTERP_EXTEND-1), dst_ptr, dst_pitch, 16, 16, 16, 16, VFilter); |
| |
| } |
| |
| void vp8_sixtap_predict_avg16x16_c |
| ( |
| 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; |
| // int FData[(15+INTERP_EXTEND*2)*24]; /* Temp data buffer used in filtering */ |
| int FData[(15+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */ |
| |
| HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */ |
| VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */ |
| |
| /* First filter 1-D horizontally... */ |
| filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, |
| src_pixels_per_line, 1, 15+INTERP_EXTEND*2, 16, HFilter); |
| |
| /* then filter verticaly... */ |
| filter_block2d_second_pass_avg(FData + 16*(INTERP_EXTEND-1), dst_ptr, dst_pitch, |
| 16, 16, 16, 16, VFilter); |
| } |
| |
| /**************************************************************************** |
| * |
| * ROUTINE : filter_block2d_bil_first_pass |
| * |
| * INPUTS : UINT8 *src_ptr : Pointer to source block. |
| * UINT32 src_stride : Stride of source block. |
| * UINT32 height : Block height. |
| * UINT32 width : Block width. |
| * INT32 *vp8_filter : Array of 2 bi-linear filter taps. |
| * |
| * OUTPUTS : INT32 *dst_ptr : Pointer to filtered block. |
| * |
| * RETURNS : void |
| * |
| * FUNCTION : Applies a 1-D 2-tap bi-linear filter to the source block |
| * in the horizontal direction to produce the filtered output |
| * block. Used to implement first-pass of 2-D separable filter. |
| * |
| * SPECIAL NOTES : Produces INT32 output to retain precision for next pass. |
| * Two filter taps should sum to VP8_FILTER_WEIGHT. |
| * |
| ****************************************************************************/ |
| static void filter_block2d_bil_first_pass |
| ( |
| unsigned char *src_ptr, |
| unsigned short *dst_ptr, |
| unsigned int src_stride, |
| unsigned int height, |
| unsigned int width, |
| const short *vp8_filter |
| ) |
| { |
| unsigned int i, j; |
| |
| for (i = 0; i < height; i++) |
| { |
| for (j = 0; j < width; j++) |
| { |
| /* Apply bilinear filter */ |
| dst_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_stride - width; |
| dst_ptr += width; |
| } |
| } |
| |
| /**************************************************************************** |
| * |
| * ROUTINE : filter_block2d_bil_second_pass |
| * |
| * INPUTS : INT32 *src_ptr : Pointer to source block. |
| * UINT32 dst_pitch : Destination block pitch. |
| * UINT32 height : Block height. |
| * UINT32 width : Block width. |
| * INT32 *vp8_filter : Array of 2 bi-linear filter taps. |
| * |
| * OUTPUTS : UINT16 *dst_ptr : Pointer to filtered block. |
| * |
| * RETURNS : void |
| * |
| * FUNCTION : Applies a 1-D 2-tap bi-linear filter to the source block |
| * in the vertical direction to produce the filtered output |
| * block. Used to implement second-pass of 2-D separable filter. |
| * |
| * SPECIAL NOTES : Requires 32-bit input as produced by filter_block2d_bil_first_pass. |
| * Two filter taps should sum to VP8_FILTER_WEIGHT. |
| * |
| ****************************************************************************/ |
| static void filter_block2d_bil_second_pass |
| ( |
| unsigned short *src_ptr, |
| unsigned char *dst_ptr, |
| int dst_pitch, |
| unsigned int height, |
| unsigned int width, |
| const short *vp8_filter |
| ) |
| { |
| unsigned int i, j; |
| int Temp; |
| |
| for (i = 0; i < height; i++) |
| { |
| for (j = 0; j < width; j++) |
| { |
| /* Apply filter */ |
| Temp = ((int)src_ptr[0] * vp8_filter[0]) + |
| ((int)src_ptr[width] * vp8_filter[1]) + |
| (VP8_FILTER_WEIGHT / 2); |
| dst_ptr[j] = (unsigned int)(Temp >> VP8_FILTER_SHIFT); |
| src_ptr++; |
| } |
| |
| /* Next row... */ |
| dst_ptr += dst_pitch; |
| } |
| } |
| |
| /* |
| * As before for filter_block2d_second_pass_avg(), the functional difference |
| * between filter_block2d_bil_second_pass() and filter_block2d_bil_second_pass_avg() |
| * is that filter_block2d_bil_second_pass() does a bilinear filter on input |
| * and stores the result in output; filter_block2d_bil_second_pass_avg(), |
| * instead, does a bilinear filter on input, averages the resulting value |
| * with the values already present in the output and stores the result of |
| * that back into the output ((filter_result + dest + 1) >> 1). |
| */ |
| static void filter_block2d_bil_second_pass_avg |
| ( |
| unsigned short *src_ptr, |
| unsigned char *dst_ptr, |
| int dst_pitch, |
| unsigned int height, |
| unsigned int width, |
| const short *vp8_filter |
| ) |
| { |
| unsigned int i, j; |
| int Temp; |
| |
| for (i = 0; i < height; i++) |
| { |
| for (j = 0; j < width; j++) |
| { |
| /* Apply filter */ |
| Temp = ((int)src_ptr[0] * vp8_filter[0]) + |
| ((int)src_ptr[width] * vp8_filter[1]) + |
| (VP8_FILTER_WEIGHT / 2); |
| dst_ptr[j] = (unsigned int)(((Temp >> VP8_FILTER_SHIFT) + dst_ptr[j] + 1) >> 1); |
| src_ptr++; |
| } |
| |
| /* Next row... */ |
| dst_ptr += dst_pitch; |
| } |
| } |
| |
| /**************************************************************************** |
| * |
| * ROUTINE : filter_block2d_bil |
| * |
| * INPUTS : UINT8 *src_ptr : Pointer to source block. |
| * UINT32 src_pitch : Stride of source block. |
| * UINT32 dst_pitch : Stride of destination block. |
| * INT32 *HFilter : Array of 2 horizontal filter taps. |
| * INT32 *VFilter : Array of 2 vertical filter taps. |
| * INT32 Width : Block width |
| * INT32 Height : Block height |
| * |
| * OUTPUTS : UINT16 *dst_ptr : Pointer to filtered block. |
| * |
| * RETURNS : void |
| * |
| * FUNCTION : 2-D filters an input block by applying a 2-tap |
| * bi-linear filter horizontally followed by a 2-tap |
| * bi-linear filter vertically on the result. |
| * |
| * SPECIAL NOTES : The largest block size can be handled here is 16x16 |
| * |
| ****************************************************************************/ |
| static void filter_block2d_bil |
| ( |
| unsigned char *src_ptr, |
| unsigned char *dst_ptr, |
| unsigned int src_pitch, |
| unsigned int dst_pitch, |
| const short *HFilter, |
| const short *VFilter, |
| int Width, |
| int Height |
| ) |
| { |
| |
| unsigned short FData[17*16]; /* Temp data buffer used in filtering */ |
| |
| /* First filter 1-D horizontally... */ |
| filter_block2d_bil_first_pass(src_ptr, FData, src_pitch, Height + 1, Width, HFilter); |
| |
| /* then 1-D vertically... */ |
| filter_block2d_bil_second_pass(FData, dst_ptr, dst_pitch, Height, Width, VFilter); |
| } |
| |
| static void filter_block2d_bil_avg |
| ( |
| unsigned char *src_ptr, |
| unsigned char *dst_ptr, |
| unsigned int src_pitch, |
| unsigned int dst_pitch, |
| const short *HFilter, |
| const short *VFilter, |
| int Width, |
| int Height |
| ) |
| { |
| unsigned short FData[17*16]; /* Temp data buffer used in filtering */ |
| |
| /* First filter 1-D horizontally... */ |
| filter_block2d_bil_first_pass(src_ptr, FData, src_pitch, Height + 1, Width, HFilter); |
| |
| /* then 1-D vertically... */ |
| filter_block2d_bil_second_pass_avg(FData, dst_ptr, dst_pitch, Height, Width, VFilter); |
| } |
| |
| void vp8_bilinear_predict4x4_c |
| ( |
| 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 = vp8_bilinear_filters[xoffset]; |
| VFilter = vp8_bilinear_filters[yoffset]; |
| #if 0 |
| { |
| int i; |
| unsigned char temp1[16]; |
| unsigned char temp2[16]; |
| |
| bilinear_predict4x4_mmx(src_ptr, src_pixels_per_line, xoffset, yoffset, temp1, 4); |
| filter_block2d_bil(src_ptr, temp2, src_pixels_per_line, 4, HFilter, VFilter, 4, 4); |
| |
| for (i = 0; i < 16; i++) |
| { |
| if (temp1[i] != temp2[i]) |
| { |
| bilinear_predict4x4_mmx(src_ptr, src_pixels_per_line, xoffset, yoffset, temp1, 4); |
| filter_block2d_bil(src_ptr, temp2, src_pixels_per_line, 4, HFilter, VFilter, 4, 4); |
| } |
| } |
| } |
| #endif |
| filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 4, 4); |
| |
| } |
| |
| void vp8_bilinear_predict8x8_c |
| ( |
| 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 = vp8_bilinear_filters[xoffset]; |
| VFilter = vp8_bilinear_filters[yoffset]; |
| |
| filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 8, 8); |
| |
| } |
| |
| void vp8_bilinear_predict_avg8x8_c |
| ( |
| 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 = vp8_bilinear_filters[xoffset]; |
| VFilter = vp8_bilinear_filters[yoffset]; |
| |
| filter_block2d_bil_avg(src_ptr, dst_ptr, src_pixels_per_line, |
| dst_pitch, HFilter, VFilter, 8, 8); |
| } |
| |
| void vp8_bilinear_predict8x4_c |
| ( |
| 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 = vp8_bilinear_filters[xoffset]; |
| VFilter = vp8_bilinear_filters[yoffset]; |
| |
| filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 8, 4); |
| |
| } |
| |
| void vp8_bilinear_predict16x16_c |
| ( |
| 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 = vp8_bilinear_filters[xoffset]; |
| VFilter = vp8_bilinear_filters[yoffset]; |
| |
| filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 16, 16); |
| } |
| |
| void vp8_bilinear_predict_avg16x16_c |
| ( |
| 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 = vp8_bilinear_filters[xoffset]; |
| VFilter = vp8_bilinear_filters[yoffset]; |
| |
| filter_block2d_bil_avg(src_ptr, dst_ptr, src_pixels_per_line, |
| dst_pitch, HFilter, VFilter, 16, 16); |
| } |
