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| 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 "vpx_mem/vpx_mem.h" | |
| 12 | |
| 13 #include "vp9/common/vp9_common.h" | |
| 14 #include "vp9/common/vp9_extend.h" | |
| 15 | |
| 16 static void copy_and_extend_plane(const uint8_t *src, int src_pitch, | |
| 17 uint8_t *dst, int dst_pitch, | |
| 18 int w, int h, | |
| 19 int extend_top, int extend_left, | |
| 20 int extend_bottom, int extend_right) { | |
| 21 int i, linesize; | |
| 22 | |
| 23 // copy the left and right most columns out | |
| 24 const uint8_t *src_ptr1 = src; | |
| 25 const uint8_t *src_ptr2 = src + w - 1; | |
| 26 uint8_t *dst_ptr1 = dst - extend_left; | |
| 27 uint8_t *dst_ptr2 = dst + w; | |
| 28 | |
| 29 for (i = 0; i < h; i++) { | |
| 30 vpx_memset(dst_ptr1, src_ptr1[0], extend_left); | |
| 31 vpx_memcpy(dst_ptr1 + extend_left, src_ptr1, w); | |
| 32 vpx_memset(dst_ptr2, src_ptr2[0], extend_right); | |
| 33 src_ptr1 += src_pitch; | |
| 34 src_ptr2 += src_pitch; | |
| 35 dst_ptr1 += dst_pitch; | |
| 36 dst_ptr2 += dst_pitch; | |
| 37 } | |
| 38 | |
| 39 // Now copy the top and bottom lines into each line of the respective | |
| 40 // borders | |
| 41 src_ptr1 = dst - extend_left; | |
| 42 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left; | |
| 43 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left; | |
| 44 dst_ptr2 = dst + dst_pitch * (h) - extend_left; | |
| 45 linesize = extend_left + extend_right + w; | |
| 46 | |
| 47 for (i = 0; i < extend_top; i++) { | |
| 48 vpx_memcpy(dst_ptr1, src_ptr1, linesize); | |
| 49 dst_ptr1 += dst_pitch; | |
| 50 } | |
| 51 | |
| 52 for (i = 0; i < extend_bottom; i++) { | |
| 53 vpx_memcpy(dst_ptr2, src_ptr2, linesize); | |
| 54 dst_ptr2 += dst_pitch; | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 void vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src, | |
| 59 YV12_BUFFER_CONFIG *dst) { | |
| 60 // Extend src frame in buffer | |
| 61 // Altref filtering assumes 16 pixel extension | |
| 62 const int et_y = 16; | |
| 63 const int el_y = 16; | |
| 64 // Motion estimation may use src block variance with the block size up | |
| 65 // to 64x64, so the right and bottom need to be extended to 64 mulitple | |
| 66 // or up to 16, whichever is greater. | |
| 67 const int eb_y = MAX(ALIGN_POWER_OF_TWO(src->y_width, 6) - src->y_width, | |
| 68 16); | |
| 69 const int er_y = MAX(ALIGN_POWER_OF_TWO(src->y_height, 6) - src->y_height, | |
| 70 16); | |
| 71 const int uv_width_subsampling = (src->uv_width != src->y_width); | |
| 72 const int uv_height_subsampling = (src->uv_height != src->y_height); | |
| 73 const int et_uv = et_y >> uv_height_subsampling; | |
| 74 const int el_uv = el_y >> uv_width_subsampling; | |
| 75 const int eb_uv = eb_y >> uv_height_subsampling; | |
| 76 const int er_uv = er_y >> uv_width_subsampling; | |
| 77 | |
| 78 #if CONFIG_ALPHA | |
| 79 const int et_a = dst->border >> (dst->alpha_height != dst->y_height); | |
| 80 const int el_a = dst->border >> (dst->alpha_width != dst->y_width); | |
| 81 const int eb_a = et_a + dst->alpha_height - src->alpha_height; | |
| 82 const int er_a = el_a + dst->alpha_width - src->alpha_width; | |
| 83 | |
| 84 copy_and_extend_plane(src->alpha_buffer, src->alpha_stride, | |
| 85 dst->alpha_buffer, dst->alpha_stride, | |
| 86 src->alpha_width, src->alpha_height, | |
| 87 et_a, el_a, eb_a, er_a); | |
| 88 #endif | |
| 89 | |
| 90 copy_and_extend_plane(src->y_buffer, src->y_stride, | |
| 91 dst->y_buffer, dst->y_stride, | |
| 92 src->y_width, src->y_height, | |
| 93 et_y, el_y, eb_y, er_y); | |
| 94 | |
| 95 copy_and_extend_plane(src->u_buffer, src->uv_stride, | |
| 96 dst->u_buffer, dst->uv_stride, | |
| 97 src->uv_width, src->uv_height, | |
| 98 et_uv, el_uv, eb_uv, er_uv); | |
| 99 | |
| 100 copy_and_extend_plane(src->v_buffer, src->uv_stride, | |
| 101 dst->v_buffer, dst->uv_stride, | |
| 102 src->uv_width, src->uv_height, | |
| 103 et_uv, el_uv, eb_uv, er_uv); | |
| 104 } | |
| 105 | |
| 106 void vp9_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src, | |
| 107 YV12_BUFFER_CONFIG *dst, | |
| 108 int srcy, int srcx, | |
| 109 int srch, int srcw) { | |
| 110 // If the side is not touching the bounder then don't extend. | |
| 111 const int et_y = srcy ? 0 : dst->border; | |
| 112 const int el_y = srcx ? 0 : dst->border; | |
| 113 const int eb_y = srcy + srch != src->y_height ? 0 : | |
| 114 dst->border + dst->y_height - src->y_height; | |
| 115 const int er_y = srcx + srcw != src->y_width ? 0 : | |
| 116 dst->border + dst->y_width - src->y_width; | |
| 117 const int src_y_offset = srcy * src->y_stride + srcx; | |
| 118 const int dst_y_offset = srcy * dst->y_stride + srcx; | |
| 119 | |
| 120 const int et_uv = ROUND_POWER_OF_TWO(et_y, 1); | |
| 121 const int el_uv = ROUND_POWER_OF_TWO(el_y, 1); | |
| 122 const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1); | |
| 123 const int er_uv = ROUND_POWER_OF_TWO(er_y, 1); | |
| 124 const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1); | |
| 125 const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1); | |
| 126 const int srch_uv = ROUND_POWER_OF_TWO(srch, 1); | |
| 127 const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1); | |
| 128 | |
| 129 copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride, | |
| 130 dst->y_buffer + dst_y_offset, dst->y_stride, | |
| 131 srcw, srch, | |
| 132 et_y, el_y, eb_y, er_y); | |
| 133 | |
| 134 copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride, | |
| 135 dst->u_buffer + dst_uv_offset, dst->uv_stride, | |
| 136 srcw_uv, srch_uv, | |
| 137 et_uv, el_uv, eb_uv, er_uv); | |
| 138 | |
| 139 copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride, | |
| 140 dst->v_buffer + dst_uv_offset, dst->uv_stride, | |
| 141 srcw_uv, srch_uv, | |
| 142 et_uv, el_uv, eb_uv, er_uv); | |
| 143 } | |
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Chromium Code Reviews
Issue 111463005:
libvpx: Pull from upstream (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/