ref: 79a00d71bd3619e9d51aeb4472856026b73c3d1b
dir: /vpx_dsp/arm/subpel_variance_media.c/
/* * 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 "./vpx_config.h" #include "./vpx_dsp_rtcd.h" #include "vpx/vpx_integer.h" #include "vpx_ports/mem.h" #if HAVE_MEDIA static const int16_t bilinear_filters_media[8][2] = { { 128, 0 }, { 112, 16 }, { 96, 32 }, { 80, 48 }, { 64, 64 }, { 48, 80 }, { 32, 96 }, { 16, 112 } }; extern void vpx_filter_block2d_bil_first_pass_media(const uint8_t *src_ptr, uint16_t *dst_ptr, uint32_t src_pitch, uint32_t height, uint32_t width, const int16_t *filter); extern void vpx_filter_block2d_bil_second_pass_media(const uint16_t *src_ptr, uint8_t *dst_ptr, int32_t src_pitch, uint32_t height, uint32_t width, const int16_t *filter); unsigned int vpx_sub_pixel_variance8x8_media(const uint8_t *src_ptr, int src_pixels_per_line, int xoffset, int yoffset, const uint8_t *dst_ptr, int dst_pixels_per_line, unsigned int *sse) { uint16_t first_pass[10*8]; uint8_t second_pass[8*8]; const int16_t *HFilter, *VFilter; HFilter = bilinear_filters_media[xoffset]; VFilter = bilinear_filters_media[yoffset]; vpx_filter_block2d_bil_first_pass_media(src_ptr, first_pass, src_pixels_per_line, 9, 8, HFilter); vpx_filter_block2d_bil_second_pass_media(first_pass, second_pass, 8, 8, 8, VFilter); return vpx_variance8x8_media(second_pass, 8, dst_ptr, dst_pixels_per_line, sse); } unsigned int vpx_sub_pixel_variance16x16_media(const uint8_t *src_ptr, int src_pixels_per_line, int xoffset, int yoffset, const uint8_t *dst_ptr, int dst_pixels_per_line, unsigned int *sse) { uint16_t first_pass[36*16]; uint8_t second_pass[20*16]; const int16_t *HFilter, *VFilter; unsigned int var; if (xoffset == 4 && yoffset == 0) { var = vpx_variance_halfpixvar16x16_h_media(src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse); } else if (xoffset == 0 && yoffset == 4) { var = vpx_variance_halfpixvar16x16_v_media(src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse); } else if (xoffset == 4 && yoffset == 4) { var = vpx_variance_halfpixvar16x16_hv_media(src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse); } else { HFilter = bilinear_filters_media[xoffset]; VFilter = bilinear_filters_media[yoffset]; vpx_filter_block2d_bil_first_pass_media(src_ptr, first_pass, src_pixels_per_line, 17, 16, HFilter); vpx_filter_block2d_bil_second_pass_media(first_pass, second_pass, 16, 16, 16, VFilter); var = vpx_variance16x16_media(second_pass, 16, dst_ptr, dst_pixels_per_line, sse); } return var; } #endif // HAVE_MEDIA