/* * 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 #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 == 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} #elif FILTER_ALPHA == 50 /* alpha = 0.50 */ { 0, 0, 0, 128, 0, 0, 0, 0}, { 0, 1, -5, 126, 8, -3, 1, 0}, { 0, 2, -10, 122, 18, -6, 2, 0}, {-1, 3, -13, 118, 27, -9, 3, 0}, {-1, 4, -16, 112, 37, -11, 3, 0}, {-1, 5, -17, 104, 48, -14, 4, -1}, {-1, 5, -18, 96, 58, -16, 5, -1}, {-1, 5, -19, 88, 68, -17, 5, -1}, {-1, 5, -18, 78, 78, -18, 5, -1}, {-1, 5, -17, 68, 88, -19, 5, -1}, {-1, 5, -16, 58, 96, -18, 5, -1}, {-1, 4, -14, 48, 104, -17, 5, -1}, { 0, 3, -11, 37, 112, -16, 4, -1}, { 0, 3, -9, 27, 118, -13, 3, -1}, { 0, 2, -6, 18, 122, -10, 2, 0}, { 0, 1, -3, 8, 126, -5, 1, 0} #elif FILTER_ALPHA == 0 /* Lagrangian interpolation filter */ { 0, 0, 0, 128, 0, 0, 0, 0}, { 0, 1, -5, 126, 8, -3, 1, 0}, {-1, 3, -10, 122, 18, -6, 2, 0}, {-1, 4, -13, 118, 27, -9, 3, -1}, {-1, 4, -16, 112, 37, -11, 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, -11, 37, 112, -16, 4, -1}, {-1, 3, -9, 27, 118, -13, 4, -1}, { 0, 2, -6, 18, 122, -10, 3, -1}, { 0, 1, -3, 8, 126, -5, 1, 0} #endif /* FILTER_ALPHA */ #else /* SUBPEL_SHIFTS==16 */ #if 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} #elif FILTER_ALPHA == 50 /* alpha = 0.50 */ { 0, 0, 0, 128, 0, 0, 0, 0}, { 0, 2, -10, 122, 18, -6, 2, 0}, {-1, 4, -16, 112, 37, -11, 3, 0}, {-1, 5, -18, 96, 58, -16, 5, -1}, {-1, 5, -18, 78, 78, -18, 5, -1}, {-1, 5, -16, 58, 96, -18, 5, -1}, { 0, 3, -11, 37, 112, -16, 4, -1}, { 0, 2, -6, 18, 122, -10, 2, 0} #elif FILTER_ALPHA == 0 /* Lagrangian interpolation filter */ { 0, 0, 0, 128, 0, 0, 0, 0}, {-1, 3, -10, 122, 18, -6, 2, 0}, {-1, 4, -16, 112, 37, -11, 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, -11, 37, 112, -16, 4, -1}, { 0, 2, -6, 18, 122, -10, 3, -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); }