The Tor Browser / annotate

media/libvpx/vp9/common/vp9_extend.c@6474c204b198 (annotated)

media/libvpx/vp9/common/vp9_extend.c

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /*
michael@0 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
michael@0 3 *
michael@0 4 * Use of this source code is governed by a BSD-style license
michael@0 5 * that can be found in the LICENSE file in the root of the source
michael@0 6 * tree. An additional intellectual property rights grant can be found
michael@0 7 * in the file PATENTS. All contributing project authors may
michael@0 8 * be found in the AUTHORS file in the root of the source tree.
michael@0 9 */
michael@0 10
michael@0 11 #include "vpx_mem/vpx_mem.h"
michael@0 12
michael@0 13 #include "vp9/common/vp9_common.h"
michael@0 14 #include "vp9/common/vp9_extend.h"
michael@0 15
michael@0 16 static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
michael@0 17 uint8_t *dst, int dst_pitch,
michael@0 18 int w, int h,
michael@0 19 int extend_top, int extend_left,
michael@0 20 int extend_bottom, int extend_right) {
michael@0 21 int i, linesize;
michael@0 22
michael@0 23 // copy the left and right most columns out
michael@0 24 const uint8_t *src_ptr1 = src;
michael@0 25 const uint8_t *src_ptr2 = src + w - 1;
michael@0 26 uint8_t *dst_ptr1 = dst - extend_left;
michael@0 27 uint8_t *dst_ptr2 = dst + w;
michael@0 28
michael@0 29 for (i = 0; i < h; i++) {
michael@0 30 vpx_memset(dst_ptr1, src_ptr1[0], extend_left);
michael@0 31 vpx_memcpy(dst_ptr1 + extend_left, src_ptr1, w);
michael@0 32 vpx_memset(dst_ptr2, src_ptr2[0], extend_right);
michael@0 33 src_ptr1 += src_pitch;
michael@0 34 src_ptr2 += src_pitch;
michael@0 35 dst_ptr1 += dst_pitch;
michael@0 36 dst_ptr2 += dst_pitch;
michael@0 37 }
michael@0 38
michael@0 39 // Now copy the top and bottom lines into each line of the respective
michael@0 40 // borders
michael@0 41 src_ptr1 = dst - extend_left;
michael@0 42 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
michael@0 43 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
michael@0 44 dst_ptr2 = dst + dst_pitch * (h) - extend_left;
michael@0 45 linesize = extend_left + extend_right + w;
michael@0 46
michael@0 47 for (i = 0; i < extend_top; i++) {
michael@0 48 vpx_memcpy(dst_ptr1, src_ptr1, linesize);
michael@0 49 dst_ptr1 += dst_pitch;
michael@0 50 }
michael@0 51
michael@0 52 for (i = 0; i < extend_bottom; i++) {
michael@0 53 vpx_memcpy(dst_ptr2, src_ptr2, linesize);
michael@0 54 dst_ptr2 += dst_pitch;
michael@0 55 }
michael@0 56 }
michael@0 57
michael@0 58 void vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
michael@0 59 YV12_BUFFER_CONFIG *dst) {
michael@0 60 // Extend src frame in buffer
michael@0 61 // Altref filtering assumes 16 pixel extension
michael@0 62 const int et_y = 16;
michael@0 63 const int el_y = 16;
michael@0 64 // Motion estimation may use src block variance with the block size up
michael@0 65 // to 64x64, so the right and bottom need to be extended to 64 multiple
michael@0 66 // or up to 16, whichever is greater.
michael@0 67 const int eb_y = MAX(ALIGN_POWER_OF_TWO(src->y_width, 6) - src->y_width,
michael@0 68 16);
michael@0 69 const int er_y = MAX(ALIGN_POWER_OF_TWO(src->y_height, 6) - src->y_height,
michael@0 70 16);
michael@0 71 const int uv_width_subsampling = (src->uv_width != src->y_width);
michael@0 72 const int uv_height_subsampling = (src->uv_height != src->y_height);
michael@0 73 const int et_uv = et_y >> uv_height_subsampling;
michael@0 74 const int el_uv = el_y >> uv_width_subsampling;
michael@0 75 const int eb_uv = eb_y >> uv_height_subsampling;
michael@0 76 const int er_uv = er_y >> uv_width_subsampling;
michael@0 77
michael@0 78 #if CONFIG_ALPHA
michael@0 79 const int et_a = dst->border >> (dst->alpha_height != dst->y_height);
michael@0 80 const int el_a = dst->border >> (dst->alpha_width != dst->y_width);
michael@0 81 const int eb_a = et_a + dst->alpha_height - src->alpha_height;
michael@0 82 const int er_a = el_a + dst->alpha_width - src->alpha_width;
michael@0 83
michael@0 84 copy_and_extend_plane(src->alpha_buffer, src->alpha_stride,
michael@0 85 dst->alpha_buffer, dst->alpha_stride,
michael@0 86 src->alpha_width, src->alpha_height,
michael@0 87 et_a, el_a, eb_a, er_a);
michael@0 88 #endif
michael@0 89
michael@0 90 copy_and_extend_plane(src->y_buffer, src->y_stride,
michael@0 91 dst->y_buffer, dst->y_stride,
michael@0 92 src->y_width, src->y_height,
michael@0 93 et_y, el_y, eb_y, er_y);
michael@0 94
michael@0 95 copy_and_extend_plane(src->u_buffer, src->uv_stride,
michael@0 96 dst->u_buffer, dst->uv_stride,
michael@0 97 src->uv_width, src->uv_height,
michael@0 98 et_uv, el_uv, eb_uv, er_uv);
michael@0 99
michael@0 100 copy_and_extend_plane(src->v_buffer, src->uv_stride,
michael@0 101 dst->v_buffer, dst->uv_stride,
michael@0 102 src->uv_width, src->uv_height,
michael@0 103 et_uv, el_uv, eb_uv, er_uv);
michael@0 104 }
michael@0 105
michael@0 106 void vp9_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src,
michael@0 107 YV12_BUFFER_CONFIG *dst,
michael@0 108 int srcy, int srcx,
michael@0 109 int srch, int srcw) {
michael@0 110 // If the side is not touching the bounder then don't extend.
michael@0 111 const int et_y = srcy ? 0 : dst->border;
michael@0 112 const int el_y = srcx ? 0 : dst->border;
michael@0 113 const int eb_y = srcy + srch != src->y_height ? 0 :
michael@0 114 dst->border + dst->y_height - src->y_height;
michael@0 115 const int er_y = srcx + srcw != src->y_width ? 0 :
michael@0 116 dst->border + dst->y_width - src->y_width;
michael@0 117 const int src_y_offset = srcy * src->y_stride + srcx;
michael@0 118 const int dst_y_offset = srcy * dst->y_stride + srcx;
michael@0 119
michael@0 120 const int et_uv = ROUND_POWER_OF_TWO(et_y, 1);
michael@0 121 const int el_uv = ROUND_POWER_OF_TWO(el_y, 1);
michael@0 122 const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1);
michael@0 123 const int er_uv = ROUND_POWER_OF_TWO(er_y, 1);
michael@0 124 const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1);
michael@0 125 const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1);
michael@0 126 const int srch_uv = ROUND_POWER_OF_TWO(srch, 1);
michael@0 127 const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1);
michael@0 128
michael@0 129 copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride,
michael@0 130 dst->y_buffer + dst_y_offset, dst->y_stride,
michael@0 131 srcw, srch,
michael@0 132 et_y, el_y, eb_y, er_y);
michael@0 133
michael@0 134 copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride,
michael@0 135 dst->u_buffer + dst_uv_offset, dst->uv_stride,
michael@0 136 srcw_uv, srch_uv,
michael@0 137 et_uv, el_uv, eb_uv, er_uv);
michael@0 138
michael@0 139 copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride,
michael@0 140 dst->v_buffer + dst_uv_offset, dst->uv_stride,
michael@0 141 srcw_uv, srch_uv,
michael@0 142 et_uv, el_uv, eb_uv, er_uv);
michael@0 143 }

Mercurial Repository: The Tor Browser

Europalab SCM Repository Server

mercurial