81 lines
3.3 KiB
C
81 lines
3.3 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "./vpx_config.h"
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#include "./vpx_dsp_rtcd.h"
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#include "vpx/vpx_integer.h"
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#include "vpx_ports/mem.h"
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#if HAVE_MEDIA
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static const int16_t bilinear_filters_media[8][2] = { { 128, 0 }, { 112, 16 },
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{ 96, 32 }, { 80, 48 },
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{ 64, 64 }, { 48, 80 },
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{ 32, 96 }, { 16, 112 } };
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extern void vpx_filter_block2d_bil_first_pass_media(
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const uint8_t *src_ptr, uint16_t *dst_ptr, uint32_t src_pitch,
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uint32_t height, uint32_t width, const int16_t *filter);
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extern void vpx_filter_block2d_bil_second_pass_media(
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const uint16_t *src_ptr, uint8_t *dst_ptr, int32_t src_pitch,
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uint32_t height, uint32_t width, const int16_t *filter);
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unsigned int vpx_sub_pixel_variance8x8_media(
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const uint8_t *src_ptr, int src_pixels_per_line, int xoffset, int yoffset,
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const uint8_t *dst_ptr, int dst_pixels_per_line, unsigned int *sse) {
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uint16_t first_pass[10 * 8];
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uint8_t second_pass[8 * 8];
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const int16_t *HFilter, *VFilter;
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HFilter = bilinear_filters_media[xoffset];
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VFilter = bilinear_filters_media[yoffset];
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vpx_filter_block2d_bil_first_pass_media(src_ptr, first_pass,
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src_pixels_per_line, 9, 8, HFilter);
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vpx_filter_block2d_bil_second_pass_media(first_pass, second_pass, 8, 8, 8,
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VFilter);
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return vpx_variance8x8_media(second_pass, 8, dst_ptr, dst_pixels_per_line,
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sse);
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}
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unsigned int vpx_sub_pixel_variance16x16_media(
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const uint8_t *src_ptr, int src_pixels_per_line, int xoffset, int yoffset,
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const uint8_t *dst_ptr, int dst_pixels_per_line, unsigned int *sse) {
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uint16_t first_pass[36 * 16];
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uint8_t second_pass[20 * 16];
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const int16_t *HFilter, *VFilter;
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unsigned int var;
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if (xoffset == 4 && yoffset == 0) {
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var = vpx_variance_halfpixvar16x16_h_media(
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src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse);
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} else if (xoffset == 0 && yoffset == 4) {
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var = vpx_variance_halfpixvar16x16_v_media(
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src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse);
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} else if (xoffset == 4 && yoffset == 4) {
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var = vpx_variance_halfpixvar16x16_hv_media(
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src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse);
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} else {
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HFilter = bilinear_filters_media[xoffset];
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VFilter = bilinear_filters_media[yoffset];
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vpx_filter_block2d_bil_first_pass_media(
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src_ptr, first_pass, src_pixels_per_line, 17, 16, HFilter);
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vpx_filter_block2d_bil_second_pass_media(first_pass, second_pass, 16, 16,
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16, VFilter);
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var = vpx_variance16x16_media(second_pass, 16, dst_ptr, dst_pixels_per_line,
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sse);
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}
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return var;
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}
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#endif // HAVE_MEDIA
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