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comparison: media/libvpx/vpx_scale/generic/yv12extend.c
media/libvpx/vpx_scale/generic/yv12extend.c
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:08dc0ee85e8a |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <assert.h> | |
| 12 #include "./vpx_config.h" | |
| 13 #include "vpx/vpx_integer.h" | |
| 14 #include "vpx_mem/vpx_mem.h" | |
| 15 #include "vpx_scale/yv12config.h" | |
| 16 | |
| 17 static void extend_plane(uint8_t *const src, int src_stride, | |
| 18 int width, int height, | |
| 19 int extend_top, int extend_left, | |
| 20 int extend_bottom, int extend_right) { | |
| 21 int i; | |
| 22 const int linesize = extend_left + extend_right + width; | |
| 23 | |
| 24 /* copy the left and right most columns out */ | |
| 25 uint8_t *src_ptr1 = src; | |
| 26 uint8_t *src_ptr2 = src + width - 1; | |
| 27 uint8_t *dst_ptr1 = src - extend_left; | |
| 28 uint8_t *dst_ptr2 = src + width; | |
| 29 | |
| 30 for (i = 0; i < height; ++i) { | |
| 31 vpx_memset(dst_ptr1, src_ptr1[0], extend_left); | |
| 32 vpx_memset(dst_ptr2, src_ptr2[0], extend_right); | |
| 33 src_ptr1 += src_stride; | |
| 34 src_ptr2 += src_stride; | |
| 35 dst_ptr1 += src_stride; | |
| 36 dst_ptr2 += src_stride; | |
| 37 } | |
| 38 | |
| 39 /* Now copy the top and bottom lines into each line of the respective | |
| 40 * borders | |
| 41 */ | |
| 42 src_ptr1 = src - extend_left; | |
| 43 src_ptr2 = src + src_stride * (height - 1) - extend_left; | |
| 44 dst_ptr1 = src + src_stride * -extend_top - extend_left; | |
| 45 dst_ptr2 = src + src_stride * height - extend_left; | |
| 46 | |
| 47 for (i = 0; i < extend_top; ++i) { | |
| 48 vpx_memcpy(dst_ptr1, src_ptr1, linesize); | |
| 49 dst_ptr1 += src_stride; | |
| 50 } | |
| 51 | |
| 52 for (i = 0; i < extend_bottom; ++i) { | |
| 53 vpx_memcpy(dst_ptr2, src_ptr2, linesize); | |
| 54 dst_ptr2 += src_stride; | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 void vp8_yv12_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf) { | |
| 59 assert(ybf->y_height - ybf->y_crop_height < 16); | |
| 60 assert(ybf->y_width - ybf->y_crop_width < 16); | |
| 61 assert(ybf->y_height - ybf->y_crop_height >= 0); | |
| 62 assert(ybf->y_width - ybf->y_crop_width >= 0); | |
| 63 | |
| 64 extend_plane(ybf->y_buffer, ybf->y_stride, | |
| 65 ybf->y_crop_width, ybf->y_crop_height, | |
| 66 ybf->border, ybf->border, | |
| 67 ybf->border + ybf->y_height - ybf->y_crop_height, | |
| 68 ybf->border + ybf->y_width - ybf->y_crop_width); | |
| 69 | |
| 70 extend_plane(ybf->u_buffer, ybf->uv_stride, | |
| 71 (ybf->y_crop_width + 1) / 2, (ybf->y_crop_height + 1) / 2, | |
| 72 ybf->border / 2, ybf->border / 2, | |
| 73 (ybf->border + ybf->y_height - ybf->y_crop_height + 1) / 2, | |
| 74 (ybf->border + ybf->y_width - ybf->y_crop_width + 1) / 2); | |
| 75 | |
| 76 extend_plane(ybf->v_buffer, ybf->uv_stride, | |
| 77 (ybf->y_crop_width + 1) / 2, (ybf->y_crop_height + 1) / 2, | |
| 78 ybf->border / 2, ybf->border / 2, | |
| 79 (ybf->border + ybf->y_height - ybf->y_crop_height + 1) / 2, | |
| 80 (ybf->border + ybf->y_width - ybf->y_crop_width + 1) / 2); | |
| 81 } | |
| 82 | |
| 83 #if CONFIG_VP9 | |
| 84 static void extend_frame(YV12_BUFFER_CONFIG *const ybf, | |
| 85 int subsampling_x, int subsampling_y, | |
| 86 int ext_size) { | |
| 87 const int c_w = ybf->uv_crop_width; | |
| 88 const int c_h = ybf->uv_crop_height; | |
| 89 const int c_ext_size = ext_size >> 1; | |
| 90 const int c_et = c_ext_size; | |
| 91 const int c_el = c_ext_size; | |
| 92 const int c_eb = c_ext_size + ybf->uv_height - ybf->uv_crop_height; | |
| 93 const int c_er = c_ext_size + ybf->uv_width - ybf->uv_crop_width; | |
| 94 | |
| 95 assert(ybf->y_height - ybf->y_crop_height < 16); | |
| 96 assert(ybf->y_width - ybf->y_crop_width < 16); | |
| 97 assert(ybf->y_height - ybf->y_crop_height >= 0); | |
| 98 assert(ybf->y_width - ybf->y_crop_width >= 0); | |
| 99 | |
| 100 extend_plane(ybf->y_buffer, ybf->y_stride, | |
| 101 ybf->y_crop_width, ybf->y_crop_height, | |
| 102 ext_size, ext_size, | |
| 103 ext_size + ybf->y_height - ybf->y_crop_height, | |
| 104 ext_size + ybf->y_width - ybf->y_crop_width); | |
| 105 | |
| 106 extend_plane(ybf->u_buffer, ybf->uv_stride, | |
| 107 c_w, c_h, c_et, c_el, c_eb, c_er); | |
| 108 | |
| 109 extend_plane(ybf->v_buffer, ybf->uv_stride, | |
| 110 c_w, c_h, c_et, c_el, c_eb, c_er); | |
| 111 } | |
| 112 | |
| 113 void vp9_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf, | |
| 114 int subsampling_x, int subsampling_y) { | |
| 115 extend_frame(ybf, subsampling_x, subsampling_y, ybf->border); | |
| 116 } | |
| 117 | |
| 118 void vp9_extend_frame_inner_borders_c(YV12_BUFFER_CONFIG *ybf, | |
| 119 int subsampling_x, int subsampling_y) { | |
| 120 const int inner_bw = (ybf->border > VP9INNERBORDERINPIXELS) ? | |
| 121 VP9INNERBORDERINPIXELS : ybf->border; | |
| 122 extend_frame(ybf, subsampling_x, subsampling_y, inner_bw); | |
| 123 } | |
| 124 #endif // CONFIG_VP9 | |
| 125 | |
| 126 // Copies the source image into the destination image and updates the | |
| 127 // destination's UMV borders. | |
| 128 // Note: The frames are assumed to be identical in size. | |
| 129 void vp8_yv12_copy_frame_c(const YV12_BUFFER_CONFIG *src_ybc, | |
| 130 YV12_BUFFER_CONFIG *dst_ybc) { | |
| 131 int row; | |
| 132 const uint8_t *src = src_ybc->y_buffer; | |
| 133 uint8_t *dst = dst_ybc->y_buffer; | |
| 134 | |
| 135 #if 0 | |
| 136 /* These assertions are valid in the codec, but the libvpx-tester uses | |
| 137 * this code slightly differently. | |
| 138 */ | |
| 139 assert(src_ybc->y_width == dst_ybc->y_width); | |
| 140 assert(src_ybc->y_height == dst_ybc->y_height); | |
| 141 #endif | |
| 142 | |
| 143 for (row = 0; row < src_ybc->y_height; ++row) { | |
| 144 vpx_memcpy(dst, src, src_ybc->y_width); | |
| 145 src += src_ybc->y_stride; | |
| 146 dst += dst_ybc->y_stride; | |
| 147 } | |
| 148 | |
| 149 src = src_ybc->u_buffer; | |
| 150 dst = dst_ybc->u_buffer; | |
| 151 | |
| 152 for (row = 0; row < src_ybc->uv_height; ++row) { | |
| 153 vpx_memcpy(dst, src, src_ybc->uv_width); | |
| 154 src += src_ybc->uv_stride; | |
| 155 dst += dst_ybc->uv_stride; | |
| 156 } | |
| 157 | |
| 158 src = src_ybc->v_buffer; | |
| 159 dst = dst_ybc->v_buffer; | |
| 160 | |
| 161 for (row = 0; row < src_ybc->uv_height; ++row) { | |
| 162 vpx_memcpy(dst, src, src_ybc->uv_width); | |
| 163 src += src_ybc->uv_stride; | |
| 164 dst += dst_ybc->uv_stride; | |
| 165 } | |
| 166 | |
| 167 vp8_yv12_extend_frame_borders_c(dst_ybc); | |
| 168 } | |
| 169 | |
| 170 void vpx_yv12_copy_y_c(const YV12_BUFFER_CONFIG *src_ybc, | |
| 171 YV12_BUFFER_CONFIG *dst_ybc) { | |
| 172 int row; | |
| 173 const uint8_t *src = src_ybc->y_buffer; | |
| 174 uint8_t *dst = dst_ybc->y_buffer; | |
| 175 | |
| 176 for (row = 0; row < src_ybc->y_height; ++row) { | |
| 177 vpx_memcpy(dst, src, src_ybc->y_width); | |
| 178 src += src_ybc->y_stride; | |
| 179 dst += dst_ybc->y_stride; | |
| 180 } | |
| 181 } |
