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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_config.h"
12 #include "vpx_mem/vpx_mem.h"
13 
14 #include "vp9/common/vp9_alloccommon.h"
15 #include "vp9/common/vp9_blockd.h"
16 #include "vp9/common/vp9_entropymode.h"
17 #include "vp9/common/vp9_entropymv.h"
18 #include "vp9/common/vp9_onyxc_int.h"
19 
vp9_set_mi_size(int * mi_rows,int * mi_cols,int * mi_stride,int width,int height)20 void vp9_set_mi_size(int *mi_rows, int *mi_cols, int *mi_stride, int width,
21                      int height) {
22   const int aligned_width = ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2);
23   const int aligned_height = ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2);
24   *mi_cols = aligned_width >> MI_SIZE_LOG2;
25   *mi_rows = aligned_height >> MI_SIZE_LOG2;
26   *mi_stride = calc_mi_size(*mi_cols);
27 }
28 
vp9_set_mb_size(int * mb_rows,int * mb_cols,int * mb_num,int mi_rows,int mi_cols)29 void vp9_set_mb_size(int *mb_rows, int *mb_cols, int *mb_num, int mi_rows,
30                      int mi_cols) {
31   *mb_cols = (mi_cols + 1) >> 1;
32   *mb_rows = (mi_rows + 1) >> 1;
33   *mb_num = (*mb_rows) * (*mb_cols);
34 }
35 
vp9_set_mb_mi(VP9_COMMON * cm,int width,int height)36 void vp9_set_mb_mi(VP9_COMMON *cm, int width, int height) {
37   vp9_set_mi_size(&cm->mi_rows, &cm->mi_cols, &cm->mi_stride, width, height);
38   vp9_set_mb_size(&cm->mb_rows, &cm->mb_cols, &cm->MBs, cm->mi_rows,
39                   cm->mi_cols);
40 }
41 
alloc_seg_map(VP9_COMMON * cm,int seg_map_size)42 static int alloc_seg_map(VP9_COMMON *cm, int seg_map_size) {
43   int i;
44 
45   for (i = 0; i < NUM_PING_PONG_BUFFERS; ++i) {
46     cm->seg_map_array[i] = (uint8_t *)vpx_calloc(seg_map_size, 1);
47     if (cm->seg_map_array[i] == NULL) return 1;
48   }
49   cm->seg_map_alloc_size = seg_map_size;
50 
51   // Init the index.
52   cm->seg_map_idx = 0;
53   cm->prev_seg_map_idx = 1;
54 
55   cm->current_frame_seg_map = cm->seg_map_array[cm->seg_map_idx];
56   cm->last_frame_seg_map = cm->seg_map_array[cm->prev_seg_map_idx];
57 
58   return 0;
59 }
60 
free_seg_map(VP9_COMMON * cm)61 static void free_seg_map(VP9_COMMON *cm) {
62   int i;
63 
64   for (i = 0; i < NUM_PING_PONG_BUFFERS; ++i) {
65     vpx_free(cm->seg_map_array[i]);
66     cm->seg_map_array[i] = NULL;
67   }
68 
69   cm->current_frame_seg_map = NULL;
70   cm->last_frame_seg_map = NULL;
71 }
72 
vp9_free_ref_frame_buffers(BufferPool * pool)73 void vp9_free_ref_frame_buffers(BufferPool *pool) {
74   int i;
75 
76   for (i = 0; i < FRAME_BUFFERS; ++i) {
77     if (!pool->frame_bufs[i].released &&
78         pool->frame_bufs[i].raw_frame_buffer.data != NULL) {
79       pool->release_fb_cb(pool->cb_priv, &pool->frame_bufs[i].raw_frame_buffer);
80       pool->frame_bufs[i].ref_count = 0;
81       pool->frame_bufs[i].released = 1;
82     }
83     vpx_free(pool->frame_bufs[i].mvs);
84     pool->frame_bufs[i].mvs = NULL;
85     vpx_free_frame_buffer(&pool->frame_bufs[i].buf);
86   }
87 }
88 
vp9_free_postproc_buffers(VP9_COMMON * cm)89 void vp9_free_postproc_buffers(VP9_COMMON *cm) {
90 #if CONFIG_VP9_POSTPROC
91   vpx_free_frame_buffer(&cm->post_proc_buffer);
92   vpx_free_frame_buffer(&cm->post_proc_buffer_int);
93   vpx_free(cm->postproc_state.limits);
94   cm->postproc_state.limits = NULL;
95   vpx_free(cm->postproc_state.generated_noise);
96   cm->postproc_state.generated_noise = NULL;
97 #else
98   (void)cm;
99 #endif
100 }
101 
vp9_free_context_buffers(VP9_COMMON * cm)102 void vp9_free_context_buffers(VP9_COMMON *cm) {
103   cm->free_mi(cm);
104   free_seg_map(cm);
105   vpx_free(cm->above_context);
106   cm->above_context = NULL;
107   vpx_free(cm->above_seg_context);
108   cm->above_seg_context = NULL;
109   vpx_free(cm->lf.lfm);
110   cm->lf.lfm = NULL;
111 }
112 
vp9_alloc_loop_filter(VP9_COMMON * cm)113 int vp9_alloc_loop_filter(VP9_COMMON *cm) {
114   vpx_free(cm->lf.lfm);
115   // Each lfm holds bit masks for all the 8x8 blocks in a 64x64 region.  The
116   // stride and rows are rounded up / truncated to a multiple of 8.
117   cm->lf.lfm_stride = (cm->mi_cols + (MI_BLOCK_SIZE - 1)) >> 3;
118   cm->lf.lfm = (LOOP_FILTER_MASK *)vpx_calloc(
119       ((cm->mi_rows + (MI_BLOCK_SIZE - 1)) >> 3) * cm->lf.lfm_stride,
120       sizeof(*cm->lf.lfm));
121   if (!cm->lf.lfm) return 1;
122   return 0;
123 }
124 
vp9_alloc_context_buffers(VP9_COMMON * cm,int width,int height)125 int vp9_alloc_context_buffers(VP9_COMMON *cm, int width, int height) {
126   int new_mi_size;
127 
128   vp9_set_mb_mi(cm, width, height);
129   new_mi_size = cm->mi_stride * calc_mi_size(cm->mi_rows);
130   if (cm->mi_alloc_size < new_mi_size) {
131     cm->free_mi(cm);
132     if (cm->alloc_mi(cm, new_mi_size)) goto fail;
133   }
134 
135   if (cm->seg_map_alloc_size < cm->mi_rows * cm->mi_cols) {
136     // Create the segmentation map structure and set to 0.
137     free_seg_map(cm);
138     if (alloc_seg_map(cm, cm->mi_rows * cm->mi_cols)) goto fail;
139   }
140 
141   if (cm->above_context_alloc_cols < cm->mi_cols) {
142     vpx_free(cm->above_context);
143     cm->above_context = (ENTROPY_CONTEXT *)vpx_calloc(
144         2 * mi_cols_aligned_to_sb(cm->mi_cols) * MAX_MB_PLANE,
145         sizeof(*cm->above_context));
146     if (!cm->above_context) goto fail;
147 
148     vpx_free(cm->above_seg_context);
149     cm->above_seg_context = (PARTITION_CONTEXT *)vpx_calloc(
150         mi_cols_aligned_to_sb(cm->mi_cols), sizeof(*cm->above_seg_context));
151     if (!cm->above_seg_context) goto fail;
152     cm->above_context_alloc_cols = cm->mi_cols;
153   }
154 
155   if (vp9_alloc_loop_filter(cm)) goto fail;
156 
157   return 0;
158 
159 fail:
160   // clear the mi_* values to force a realloc on resync
161   vp9_set_mb_mi(cm, 0, 0);
162   vp9_free_context_buffers(cm);
163   return 1;
164 }
165 
vp9_remove_common(VP9_COMMON * cm)166 void vp9_remove_common(VP9_COMMON *cm) {
167 #if CONFIG_VP9_POSTPROC
168   vp9_free_postproc_buffers(cm);
169 #endif
170   vp9_free_context_buffers(cm);
171 
172   vpx_free(cm->fc);
173   cm->fc = NULL;
174   vpx_free(cm->frame_contexts);
175   cm->frame_contexts = NULL;
176 }
177 
vp9_init_context_buffers(VP9_COMMON * cm)178 void vp9_init_context_buffers(VP9_COMMON *cm) {
179   cm->setup_mi(cm);
180   if (cm->last_frame_seg_map)
181     memset(cm->last_frame_seg_map, 0, cm->mi_rows * cm->mi_cols);
182 }
183 
vp9_swap_current_and_last_seg_map(VP9_COMMON * cm)184 void vp9_swap_current_and_last_seg_map(VP9_COMMON *cm) {
185   // Swap indices.
186   const int tmp = cm->seg_map_idx;
187   cm->seg_map_idx = cm->prev_seg_map_idx;
188   cm->prev_seg_map_idx = tmp;
189 
190   cm->current_frame_seg_map = cm->seg_map_array[cm->seg_map_idx];
191   cm->last_frame_seg_map = cm->seg_map_array[cm->prev_seg_map_idx];
192 }
193