media/libvpx/vp9/common/vp9_reconinter.h@ac0c01689b40
media/libvpx/vp9/common/vp9_reconinter.h
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
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 */
11 #ifndef VP9_COMMON_VP9_RECONINTER_H_
12 #define VP9_COMMON_VP9_RECONINTER_H_
14 #include "vpx/vpx_integer.h"
15 #include "vp9/common/vp9_onyxc_int.h"
17 struct subpix_fn_table;
18 void vp9_build_inter_predictors_sby(MACROBLOCKD *xd, int mi_row, int mi_col,
19 BLOCK_SIZE bsize);
21 void vp9_build_inter_predictors_sbuv(MACROBLOCKD *xd, int mi_row, int mi_col,
22 BLOCK_SIZE bsize);
24 void vp9_build_inter_predictors_sb(MACROBLOCKD *xd, int mi_row, int mi_col,
25 BLOCK_SIZE bsize);
27 void vp9_setup_interp_filters(MACROBLOCKD *xd,
28 INTERPOLATION_TYPE filter,
29 VP9_COMMON *cm);
31 void vp9_build_inter_predictor(const uint8_t *src, int src_stride,
32 uint8_t *dst, int dst_stride,
33 const MV *mv_q3,
34 const struct scale_factors *scale,
35 int w, int h, int do_avg,
36 const struct subpix_fn_table *subpix,
37 enum mv_precision precision);
39 static int scaled_buffer_offset(int x_offset, int y_offset, int stride,
40 const struct scale_factors *scale) {
41 const int x = scale ? scale->sfc->scale_value_x(x_offset, scale->sfc) :
42 x_offset;
43 const int y = scale ? scale->sfc->scale_value_y(y_offset, scale->sfc) :
44 y_offset;
45 return y * stride + x;
46 }
48 static void setup_pred_plane(struct buf_2d *dst,
49 uint8_t *src, int stride,
50 int mi_row, int mi_col,
51 const struct scale_factors *scale,
52 int subsampling_x, int subsampling_y) {
53 const int x = (MI_SIZE * mi_col) >> subsampling_x;
54 const int y = (MI_SIZE * mi_row) >> subsampling_y;
55 dst->buf = src + scaled_buffer_offset(x, y, stride, scale);
56 dst->stride = stride;
57 }
59 // TODO(jkoleszar): audit all uses of this that don't set mb_row, mb_col
60 static void setup_dst_planes(MACROBLOCKD *xd,
61 const YV12_BUFFER_CONFIG *src,
62 int mi_row, int mi_col) {
63 uint8_t *buffers[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
64 src->alpha_buffer};
65 int strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
66 src->alpha_stride};
67 int i;
69 for (i = 0; i < MAX_MB_PLANE; ++i) {
70 struct macroblockd_plane *pd = &xd->plane[i];
71 setup_pred_plane(&pd->dst, buffers[i], strides[i], mi_row, mi_col, NULL,
72 pd->subsampling_x, pd->subsampling_y);
73 }
74 }
76 static void setup_pre_planes(MACROBLOCKD *xd, int i,
77 const YV12_BUFFER_CONFIG *src,
78 int mi_row, int mi_col,
79 const struct scale_factors *sf) {
80 if (src) {
81 int j;
82 uint8_t* buffers[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
83 src->alpha_buffer};
84 int strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
85 src->alpha_stride};
87 for (j = 0; j < MAX_MB_PLANE; ++j) {
88 struct macroblockd_plane *pd = &xd->plane[j];
89 setup_pred_plane(&pd->pre[i], buffers[j], strides[j],
90 mi_row, mi_col, sf, pd->subsampling_x, pd->subsampling_y);
91 }
92 }
93 }
95 static void set_scale_factors(MACROBLOCKD *xd, int ref0, int ref1,
96 struct scale_factors sf[MAX_REF_FRAMES]) {
97 xd->scale_factor[0] = sf[ref0 >= 0 ? ref0 : 0];
98 xd->scale_factor[1] = sf[ref1 >= 0 ? ref1 : 0];
99 }
101 void vp9_setup_scale_factors(VP9_COMMON *cm, int i);
103 #endif // VP9_COMMON_VP9_RECONINTER_H_
