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_config.h"
12 #include "vpx_mem/vpx_mem.h"
13 
14 #include "vp9/common/vp9_blockd.h"
15 #include "vp9/common/vp9_entropymode.h"
16 #include "vp9/common/vp9_entropymv.h"
17 #include "vp9/common/vp9_onyxc_int.h"
18 #include "vp9/common/vp9_systemdependent.h"
19 
clear_mi_border(const VP9_COMMON * cm,MODE_INFO * mi)20 static void clear_mi_border(const VP9_COMMON *cm, MODE_INFO *mi) {
21   int i;
22 
23   // Top border row
24   vpx_memset(mi, 0, sizeof(*mi) * cm->mi_stride);
25 
26   // Left border column
27   for (i = 1; i < cm->mi_rows + 1; ++i)
28     vpx_memset(&mi[i * cm->mi_stride], 0, sizeof(*mi));
29 }
30 
set_mb_mi(VP9_COMMON * cm,int aligned_width,int aligned_height)31 static void set_mb_mi(VP9_COMMON *cm, int aligned_width, int aligned_height) {
32   cm->mi_cols = aligned_width >> MI_SIZE_LOG2;
33   cm->mi_rows = aligned_height >> MI_SIZE_LOG2;
34   cm->mi_stride = cm->mi_cols + MI_BLOCK_SIZE;
35 
36   cm->mb_cols = (cm->mi_cols + 1) >> 1;
37   cm->mb_rows = (cm->mi_rows + 1) >> 1;
38   cm->MBs = cm->mb_rows * cm->mb_cols;
39 }
40 
setup_mi(VP9_COMMON * cm)41 static void setup_mi(VP9_COMMON *cm) {
42   cm->mi = cm->mip + cm->mi_stride + 1;
43   cm->prev_mi = cm->prev_mip + cm->mi_stride + 1;
44   cm->mi_grid_visible = cm->mi_grid_base + cm->mi_stride + 1;
45   cm->prev_mi_grid_visible = cm->prev_mi_grid_base + cm->mi_stride + 1;
46 
47   vpx_memset(cm->mip, 0, cm->mi_stride * (cm->mi_rows + 1) * sizeof(*cm->mip));
48 
49   vpx_memset(cm->mi_grid_base, 0, cm->mi_stride * (cm->mi_rows + 1) *
50                                       sizeof(*cm->mi_grid_base));
51 
52   clear_mi_border(cm, cm->prev_mip);
53 }
54 
alloc_mi(VP9_COMMON * cm,int mi_size)55 static int alloc_mi(VP9_COMMON *cm, int mi_size) {
56   cm->mip = (MODE_INFO *)vpx_calloc(mi_size, sizeof(*cm->mip));
57   if (cm->mip == NULL)
58     return 1;
59 
60   cm->prev_mip = (MODE_INFO *)vpx_calloc(mi_size, sizeof(*cm->prev_mip));
61   if (cm->prev_mip == NULL)
62     return 1;
63 
64   cm->mi_grid_base =
65       (MODE_INFO **)vpx_calloc(mi_size, sizeof(*cm->mi_grid_base));
66   if (cm->mi_grid_base == NULL)
67     return 1;
68 
69   cm->prev_mi_grid_base =
70       (MODE_INFO **)vpx_calloc(mi_size, sizeof(*cm->prev_mi_grid_base));
71   if (cm->prev_mi_grid_base == NULL)
72     return 1;
73 
74   return 0;
75 }
76 
free_mi(VP9_COMMON * cm)77 static void free_mi(VP9_COMMON *cm) {
78   vpx_free(cm->mip);
79   vpx_free(cm->prev_mip);
80   vpx_free(cm->mi_grid_base);
81   vpx_free(cm->prev_mi_grid_base);
82 
83   cm->mip = NULL;
84   cm->prev_mip = NULL;
85   cm->mi_grid_base = NULL;
86   cm->prev_mi_grid_base = NULL;
87 }
88 
vp9_free_frame_buffers(VP9_COMMON * cm)89 void vp9_free_frame_buffers(VP9_COMMON *cm) {
90   int i;
91 
92   for (i = 0; i < FRAME_BUFFERS; ++i) {
93     vp9_free_frame_buffer(&cm->frame_bufs[i].buf);
94 
95     if (cm->frame_bufs[i].ref_count > 0 &&
96         cm->frame_bufs[i].raw_frame_buffer.data != NULL) {
97       cm->release_fb_cb(cm->cb_priv, &cm->frame_bufs[i].raw_frame_buffer);
98       cm->frame_bufs[i].ref_count = 0;
99     }
100   }
101 
102   vp9_free_frame_buffer(&cm->post_proc_buffer);
103 
104   free_mi(cm);
105 
106   vpx_free(cm->last_frame_seg_map);
107   cm->last_frame_seg_map = NULL;
108 
109   vpx_free(cm->above_context);
110   cm->above_context = NULL;
111 
112   vpx_free(cm->above_seg_context);
113   cm->above_seg_context = NULL;
114 }
115 
vp9_resize_frame_buffers(VP9_COMMON * cm,int width,int height)116 int vp9_resize_frame_buffers(VP9_COMMON *cm, int width, int height) {
117   const int aligned_width = ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2);
118   const int aligned_height = ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2);
119   const int ss_x = cm->subsampling_x;
120   const int ss_y = cm->subsampling_y;
121 
122   if (vp9_realloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
123                                VP9_DEC_BORDER_IN_PIXELS, NULL, NULL, NULL) < 0)
124     goto fail;
125 
126   set_mb_mi(cm, aligned_width, aligned_height);
127 
128   free_mi(cm);
129   if (alloc_mi(cm, cm->mi_stride * (cm->mi_rows + MI_BLOCK_SIZE)))
130     goto fail;
131 
132   setup_mi(cm);
133 
134   // Create the segmentation map structure and set to 0.
135   vpx_free(cm->last_frame_seg_map);
136   cm->last_frame_seg_map = (uint8_t *)vpx_calloc(cm->mi_rows * cm->mi_cols, 1);
137   if (!cm->last_frame_seg_map)
138     goto fail;
139 
140   vpx_free(cm->above_context);
141   cm->above_context =
142       (ENTROPY_CONTEXT *)vpx_calloc(2 * mi_cols_aligned_to_sb(cm->mi_cols) *
143                                         MAX_MB_PLANE,
144                                     sizeof(*cm->above_context));
145   if (!cm->above_context)
146     goto fail;
147 
148   vpx_free(cm->above_seg_context);
149   cm->above_seg_context =
150      (PARTITION_CONTEXT *)vpx_calloc(mi_cols_aligned_to_sb(cm->mi_cols),
151                                      sizeof(*cm->above_seg_context));
152   if (!cm->above_seg_context)
153     goto fail;
154 
155   return 0;
156 
157  fail:
158   vp9_free_frame_buffers(cm);
159   return 1;
160 }
161 
vp9_alloc_frame_buffers(VP9_COMMON * cm,int width,int height)162 int vp9_alloc_frame_buffers(VP9_COMMON *cm, int width, int height) {
163   const int aligned_width = ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2);
164   const int aligned_height = ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2);
165   const int ss_x = cm->subsampling_x;
166   const int ss_y = cm->subsampling_y;
167   int i;
168 
169   vp9_free_frame_buffers(cm);
170 
171   for (i = 0; i < FRAME_BUFFERS; i++) {
172     cm->frame_bufs[i].ref_count = 0;
173     if (vp9_alloc_frame_buffer(&cm->frame_bufs[i].buf, width, height,
174                                ss_x, ss_y, VP9_ENC_BORDER_IN_PIXELS) < 0)
175       goto fail;
176   }
177 
178   cm->new_fb_idx = FRAME_BUFFERS - 1;
179   cm->frame_bufs[cm->new_fb_idx].ref_count = 1;
180 
181   for (i = 0; i < REF_FRAMES; i++) {
182     cm->ref_frame_map[i] = i;
183     cm->frame_bufs[i].ref_count = 1;
184   }
185 
186   if (vp9_alloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
187                              VP9_ENC_BORDER_IN_PIXELS) < 0)
188     goto fail;
189 
190   set_mb_mi(cm, aligned_width, aligned_height);
191 
192   if (alloc_mi(cm, cm->mi_stride * (cm->mi_rows + MI_BLOCK_SIZE)))
193     goto fail;
194 
195   setup_mi(cm);
196 
197   // Create the segmentation map structure and set to 0.
198   cm->last_frame_seg_map = (uint8_t *)vpx_calloc(cm->mi_rows * cm->mi_cols, 1);
199   if (!cm->last_frame_seg_map)
200     goto fail;
201 
202   cm->above_context =
203       (ENTROPY_CONTEXT *)vpx_calloc(2 * mi_cols_aligned_to_sb(cm->mi_cols) *
204                                         MAX_MB_PLANE,
205                                     sizeof(*cm->above_context));
206   if (!cm->above_context)
207     goto fail;
208 
209   cm->above_seg_context =
210       (PARTITION_CONTEXT *)vpx_calloc(mi_cols_aligned_to_sb(cm->mi_cols),
211                                       sizeof(*cm->above_seg_context));
212   if (!cm->above_seg_context)
213     goto fail;
214 
215   return 0;
216 
217  fail:
218   vp9_free_frame_buffers(cm);
219   return 1;
220 }
221 
vp9_remove_common(VP9_COMMON * cm)222 void vp9_remove_common(VP9_COMMON *cm) {
223   vp9_free_frame_buffers(cm);
224   vp9_free_internal_frame_buffers(&cm->int_frame_buffers);
225 }
226 
vp9_update_frame_size(VP9_COMMON * cm)227 void vp9_update_frame_size(VP9_COMMON *cm) {
228   const int aligned_width = ALIGN_POWER_OF_TWO(cm->width, MI_SIZE_LOG2);
229   const int aligned_height = ALIGN_POWER_OF_TWO(cm->height, MI_SIZE_LOG2);
230 
231   set_mb_mi(cm, aligned_width, aligned_height);
232   setup_mi(cm);
233 
234   // Initialize the previous frame segment map to 0.
235   if (cm->last_frame_seg_map)
236     vpx_memset(cm->last_frame_seg_map, 0, cm->mi_rows * cm->mi_cols);
237 }
238 
vp9_swap_mi_and_prev_mi(VP9_COMMON * cm)239 void vp9_swap_mi_and_prev_mi(VP9_COMMON *cm) {
240   // Current mip will be the prev_mip for the next frame.
241   MODE_INFO *temp = cm->prev_mip;
242   MODE_INFO **temp2 = cm->prev_mi_grid_base;
243   cm->prev_mip = cm->mip;
244   cm->mip = temp;
245   cm->prev_mi_grid_base = cm->mi_grid_base;
246   cm->mi_grid_base = temp2;
247 
248   // Update the upper left visible macroblock ptrs.
249   cm->mi = cm->mip + cm->mi_stride + 1;
250   cm->prev_mi = cm->prev_mip + cm->mi_stride + 1;
251   cm->mi_grid_visible = cm->mi_grid_base + cm->mi_stride + 1;
252   cm->prev_mi_grid_visible = cm->prev_mi_grid_base + cm->mi_stride + 1;
253 }
254