diff options
Diffstat (limited to 'third_party/aom/aom_dsp/arm/subpel_variance_media.c')
-rw-r--r-- | third_party/aom/aom_dsp/arm/subpel_variance_media.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/arm/subpel_variance_media.c b/third_party/aom/aom_dsp/arm/subpel_variance_media.c new file mode 100644 index 000000000..46ec028d3 --- /dev/null +++ b/third_party/aom/aom_dsp/arm/subpel_variance_media.c @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include "./aom_config.h" +#include "./aom_dsp_rtcd.h" +#include "aom/aom_integer.h" +#include "aom_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 aom_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 aom_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 aom_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]; + + aom_filter_block2d_bil_first_pass_media(src_ptr, first_pass, + src_pixels_per_line, 9, 8, HFilter); + aom_filter_block2d_bil_second_pass_media(first_pass, second_pass, 8, 8, 8, + VFilter); + + return aom_variance8x8_media(second_pass, 8, dst_ptr, dst_pixels_per_line, + sse); +} + +unsigned int aom_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 = aom_variance_halfpixvar16x16_h_media( + src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse); + } else if (xoffset == 0 && yoffset == 4) { + var = aom_variance_halfpixvar16x16_v_media( + src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse); + } else if (xoffset == 4 && yoffset == 4) { + var = aom_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]; + + aom_filter_block2d_bil_first_pass_media( + src_ptr, first_pass, src_pixels_per_line, 17, 16, HFilter); + aom_filter_block2d_bil_second_pass_media(first_pass, second_pass, 16, 16, + 16, VFilter); + + var = aom_variance16x16_media(second_pass, 16, dst_ptr, dst_pixels_per_line, + sse); + } + return var; +} +#endif // HAVE_MEDIA |