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
20static 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
31void vp9_set_mb_mi(VP9_COMMON *cm, int width, int height) {
32  const int aligned_width = ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2);
33  const int aligned_height = ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2);
34
35  cm->mi_cols = aligned_width >> MI_SIZE_LOG2;
36  cm->mi_rows = aligned_height >> MI_SIZE_LOG2;
37  cm->mi_stride = calc_mi_size(cm->mi_cols);
38
39  cm->mb_cols = (cm->mi_cols + 1) >> 1;
40  cm->mb_rows = (cm->mi_rows + 1) >> 1;
41  cm->MBs = cm->mb_rows * cm->mb_cols;
42}
43
44static void setup_mi(VP9_COMMON *cm) {
45  cm->mi = cm->mip + cm->mi_stride + 1;
46  cm->prev_mi = cm->prev_mip + cm->mi_stride + 1;
47
48  vpx_memset(cm->mip, 0, cm->mi_stride * (cm->mi_rows + 1) * sizeof(*cm->mip));
49  clear_mi_border(cm, cm->prev_mip);
50}
51
52static int alloc_mi(VP9_COMMON *cm, int mi_size) {
53  int i;
54
55  for (i = 0; i < 2; ++i) {
56    cm->mip_array[i] =
57        (MODE_INFO *)vpx_calloc(mi_size, sizeof(MODE_INFO));
58    if (cm->mip_array[i] == NULL)
59      return 1;
60  }
61
62  cm->mi_alloc_size = mi_size;
63
64  // Init the index.
65  cm->mi_idx = 0;
66  cm->prev_mi_idx = 1;
67
68  cm->mip = cm->mip_array[cm->mi_idx];
69  cm->prev_mip = cm->mip_array[cm->prev_mi_idx];
70
71  return 0;
72}
73
74static void free_mi(VP9_COMMON *cm) {
75  int i;
76
77  for (i = 0; i < 2; ++i) {
78    vpx_free(cm->mip_array[i]);
79    cm->mip_array[i] = NULL;
80  }
81
82  cm->mip = NULL;
83  cm->prev_mip = NULL;
84}
85
86void vp9_free_ref_frame_buffers(VP9_COMMON *cm) {
87  int i;
88
89  for (i = 0; i < FRAME_BUFFERS; ++i) {
90    vp9_free_frame_buffer(&cm->frame_bufs[i].buf);
91
92    if (cm->frame_bufs[i].ref_count > 0 &&
93        cm->frame_bufs[i].raw_frame_buffer.data != NULL) {
94      cm->release_fb_cb(cm->cb_priv, &cm->frame_bufs[i].raw_frame_buffer);
95      cm->frame_bufs[i].ref_count = 0;
96    }
97  }
98
99  vp9_free_frame_buffer(&cm->post_proc_buffer);
100}
101
102void vp9_free_context_buffers(VP9_COMMON *cm) {
103  free_mi(cm);
104
105  vpx_free(cm->last_frame_seg_map);
106  cm->last_frame_seg_map = NULL;
107
108  vpx_free(cm->above_context);
109  cm->above_context = NULL;
110
111  vpx_free(cm->above_seg_context);
112  cm->above_seg_context = NULL;
113}
114
115int vp9_alloc_context_buffers(VP9_COMMON *cm, int width, int height) {
116  vp9_free_context_buffers(cm);
117
118  vp9_set_mb_mi(cm, width, height);
119  if (alloc_mi(cm, cm->mi_stride * calc_mi_size(cm->mi_rows)))
120    goto fail;
121
122  cm->last_frame_seg_map = (uint8_t *)vpx_calloc(cm->mi_rows * cm->mi_cols, 1);
123  if (!cm->last_frame_seg_map) goto fail;
124
125  cm->above_context = (ENTROPY_CONTEXT *)vpx_calloc(
126      2 * mi_cols_aligned_to_sb(cm->mi_cols) * MAX_MB_PLANE,
127      sizeof(*cm->above_context));
128  if (!cm->above_context) goto fail;
129
130  cm->above_seg_context = (PARTITION_CONTEXT *)vpx_calloc(
131      mi_cols_aligned_to_sb(cm->mi_cols), sizeof(*cm->above_seg_context));
132  if (!cm->above_seg_context) goto fail;
133
134  return 0;
135
136 fail:
137  vp9_free_context_buffers(cm);
138  return 1;
139}
140
141static void init_frame_bufs(VP9_COMMON *cm) {
142  int i;
143
144  cm->new_fb_idx = FRAME_BUFFERS - 1;
145  cm->frame_bufs[cm->new_fb_idx].ref_count = 1;
146
147  for (i = 0; i < REF_FRAMES; ++i) {
148    cm->ref_frame_map[i] = i;
149    cm->frame_bufs[i].ref_count = 1;
150  }
151}
152
153int vp9_alloc_ref_frame_buffers(VP9_COMMON *cm, int width, int height) {
154  int i;
155  const int ss_x = cm->subsampling_x;
156  const int ss_y = cm->subsampling_y;
157
158  vp9_free_ref_frame_buffers(cm);
159
160  for (i = 0; i < FRAME_BUFFERS; ++i) {
161    cm->frame_bufs[i].ref_count = 0;
162    if (vp9_alloc_frame_buffer(&cm->frame_bufs[i].buf, width, height,
163                               ss_x, ss_y,
164#if CONFIG_VP9_HIGHBITDEPTH
165                               cm->use_highbitdepth,
166#endif
167                               VP9_ENC_BORDER_IN_PIXELS) < 0)
168      goto fail;
169  }
170
171  init_frame_bufs(cm);
172
173#if CONFIG_INTERNAL_STATS || CONFIG_VP9_POSTPROC
174  if (vp9_alloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
175#if CONFIG_VP9_HIGHBITDEPTH
176                             cm->use_highbitdepth,
177#endif
178                             VP9_ENC_BORDER_IN_PIXELS) < 0)
179    goto fail;
180#endif
181
182  return 0;
183
184 fail:
185  vp9_free_ref_frame_buffers(cm);
186  return 1;
187}
188
189void vp9_remove_common(VP9_COMMON *cm) {
190  vp9_free_ref_frame_buffers(cm);
191  vp9_free_context_buffers(cm);
192  vp9_free_internal_frame_buffers(&cm->int_frame_buffers);
193}
194
195void vp9_init_context_buffers(VP9_COMMON *cm) {
196  setup_mi(cm);
197  if (cm->last_frame_seg_map)
198    vpx_memset(cm->last_frame_seg_map, 0, cm->mi_rows * cm->mi_cols);
199}
200
201void vp9_swap_mi_and_prev_mi(VP9_COMMON *cm) {
202  // Swap indices.
203  const int tmp = cm->mi_idx;
204  cm->mi_idx = cm->prev_mi_idx;
205  cm->prev_mi_idx = tmp;
206
207  // Current mip will be the prev_mip for the next frame.
208  cm->mip = cm->mip_array[cm->mi_idx];
209  cm->prev_mip = cm->mip_array[cm->prev_mi_idx];
210
211  // Update the upper left visible macroblock ptrs.
212  cm->mi = cm->mip + cm->mi_stride + 1;
213  cm->prev_mi = cm->prev_mip + cm->mi_stride + 1;
214}
215