vp9/common/vp9_alloccommon.c

   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
  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
  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
  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
  55 static int alloc_mi(VP9_COMMON *cm, int mi_size) {
  56   int i;
  57
  58   for (i = 0; i < 2; ++i) {
  59     cm->mip_array[i] =
  60         (MODE_INFO *)vpx_calloc(mi_size, sizeof(*cm->mip));
  61     if (cm->mip_array[i] == NULL)
  62       return 1;
  63
  64     cm->mi_grid_base_array[i] =
  65         (MODE_INFO **)vpx_calloc(mi_size, sizeof(*cm->mi_grid_base));
  66     if (cm->mi_grid_base_array[i] == NULL)
  67       return 1;
  68   }
  69
  70   // Init the index.
  71   cm->mi_idx = 0;
  72   cm->prev_mi_idx = 1;
  73
  74   cm->mip = cm->mip_array[cm->mi_idx];
  75   cm->prev_mip = cm->mip_array[cm->prev_mi_idx];
  76   cm->mi_grid_base = cm->mi_grid_base_array[cm->mi_idx];
  77   cm->prev_mi_grid_base = cm->mi_grid_base_array[cm->prev_mi_idx];
  78
  79   return 0;
  80 }
  81
  82 static void free_mi(VP9_COMMON *cm) {
  83   int i;
  84
  85   for (i = 0; i < 2; ++i) {
  86     vpx_free(cm->mip_array[i]);
  87     cm->mip_array[i] = NULL;
  88     vpx_free(cm->mi_grid_base_array[i]);
  89     cm->mi_grid_base_array[i] = NULL;
  90   }
  91
  92   cm->mip = NULL;
  93   cm->prev_mip = NULL;
  94   cm->mi_grid_base = NULL;
  95   cm->prev_mi_grid_base = NULL;
  96 }
  97
  98 void vp9_free_frame_buffers(VP9_COMMON *cm) {
  99   int i;
 100
 101   for (i = 0; i < FRAME_BUFFERS; ++i) {
 102     vp9_free_frame_buffer(&cm->frame_bufs[i].buf);
 103
 104     if (cm->frame_bufs[i].ref_count > 0 &&
 105         cm->frame_bufs[i].raw_frame_buffer.data != NULL) {
 106       cm->release_fb_cb(cm->cb_priv, &cm->frame_bufs[i].raw_frame_buffer);
 107       cm->frame_bufs[i].ref_count = 0;
 108     }
 109   }
 110
 111   vp9_free_frame_buffer(&cm->post_proc_buffer);
 112 }
 113
 114 void vp9_free_context_buffers(VP9_COMMON *cm) {
 115   free_mi(cm);
 116
 117   vpx_free(cm->last_frame_seg_map);
 118   cm->last_frame_seg_map = NULL;
 119
 120   vpx_free(cm->above_context);
 121   cm->above_context = NULL;
 122
 123   vpx_free(cm->above_seg_context);
 124   cm->above_seg_context = NULL;
 125 }
 126
 127 int vp9_resize_frame_buffers(VP9_COMMON *cm, int width, int height) {
 128   const int aligned_width = ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2);
 129   const int aligned_height = ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2);
 130   const int ss_x = cm->subsampling_x;
 131   const int ss_y = cm->subsampling_y;
 132
 133   if (vp9_realloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
 134                                VP9_DEC_BORDER_IN_PIXELS, NULL, NULL, NULL) < 0)
 135     goto fail;
 136
 137   set_mb_mi(cm, aligned_width, aligned_height);
 138
 139   free_mi(cm);
 140   if (alloc_mi(cm, cm->mi_stride * (cm->mi_rows + MI_BLOCK_SIZE)))
 141     goto fail;
 142
 143   setup_mi(cm);
 144
 145   // Create the segmentation map structure and set to 0.
 146   vpx_free(cm->last_frame_seg_map);
 147   cm->last_frame_seg_map = (uint8_t *)vpx_calloc(cm->mi_rows * cm->mi_cols, 1);
 148   if (!cm->last_frame_seg_map)
 149     goto fail;
 150
 151   vpx_free(cm->above_context);
 152   cm->above_context =
 153       (ENTROPY_CONTEXT *)vpx_calloc(2 * mi_cols_aligned_to_sb(cm->mi_cols) *
 154                                         MAX_MB_PLANE,
 155                                     sizeof(*cm->above_context));
 156   if (!cm->above_context)
 157     goto fail;
 158
 159   vpx_free(cm->above_seg_context);
 160   cm->above_seg_context =
 161      (PARTITION_CONTEXT *)vpx_calloc(mi_cols_aligned_to_sb(cm->mi_cols),
 162                                      sizeof(*cm->above_seg_context));
 163   if (!cm->above_seg_context)
 164     goto fail;
 165
 166   return 0;
 167
 168  fail:
 169   vp9_free_frame_buffers(cm);
 170   vp9_free_context_buffers(cm);
 171   return 1;
 172 }
 173
 174 static void init_frame_bufs(VP9_COMMON *cm) {
 175   int i;
 176
 177   cm->new_fb_idx = FRAME_BUFFERS - 1;
 178   cm->frame_bufs[cm->new_fb_idx].ref_count = 1;
 179
 180   for (i = 0; i < REF_FRAMES; ++i) {
 181     cm->ref_frame_map[i] = i;
 182     cm->frame_bufs[i].ref_count = 1;
 183   }
 184 }
 185
 186 int vp9_alloc_frame_buffers(VP9_COMMON *cm, int width, int height) {
 187   int i;
 188   const int ss_x = cm->subsampling_x;
 189   const int ss_y = cm->subsampling_y;
 190
 191   vp9_free_frame_buffers(cm);
 192
 193   for (i = 0; i < FRAME_BUFFERS; ++i) {
 194     cm->frame_bufs[i].ref_count = 0;
 195     if (vp9_alloc_frame_buffer(&cm->frame_bufs[i].buf, width, height,
 196                                ss_x, ss_y, VP9_ENC_BORDER_IN_PIXELS) < 0)
 197       goto fail;
 198   }
 199
 200   init_frame_bufs(cm);
 201
 202   if (vp9_alloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
 203                              VP9_ENC_BORDER_IN_PIXELS) < 0)
 204     goto fail;
 205
 206   return 0;
 207
 208  fail:
 209   vp9_free_frame_buffers(cm);
 210   return 1;
 211 }
 212
 213 int vp9_alloc_context_buffers(VP9_COMMON *cm, int width, int height) {
 214   const int aligned_width = ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2);
 215   const int aligned_height = ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2);
 216
 217   vp9_free_context_buffers(cm);
 218
 219   set_mb_mi(cm, aligned_width, aligned_height);
 220
 221   if (alloc_mi(cm, cm->mi_stride * (cm->mi_rows + MI_BLOCK_SIZE)))
 222     goto fail;
 223
 224   setup_mi(cm);
 225
 226   // Create the segmentation map structure and set to 0.
 227   cm->last_frame_seg_map = (uint8_t *)vpx_calloc(cm->mi_rows * cm->mi_cols, 1);
 228   if (!cm->last_frame_seg_map)
 229     goto fail;
 230
 231   cm->above_context =
 232       (ENTROPY_CONTEXT *)vpx_calloc(2 * mi_cols_aligned_to_sb(cm->mi_cols) *
 233                                         MAX_MB_PLANE,
 234                                     sizeof(*cm->above_context));
 235   if (!cm->above_context)
 236     goto fail;
 237
 238   cm->above_seg_context =
 239       (PARTITION_CONTEXT *)vpx_calloc(mi_cols_aligned_to_sb(cm->mi_cols),
 240                                       sizeof(*cm->above_seg_context));
 241   if (!cm->above_seg_context)
 242     goto fail;
 243
 244   return 0;
 245
 246  fail:
 247   vp9_free_context_buffers(cm);
 248   return 1;
 249 }
 250
 251 void vp9_remove_common(VP9_COMMON *cm) {
 252   vp9_free_frame_buffers(cm);
 253   vp9_free_context_buffers(cm);
 254   vp9_free_internal_frame_buffers(&cm->int_frame_buffers);
 255 }
 256
 257 void vp9_update_frame_size(VP9_COMMON *cm) {
 258   const int aligned_width = ALIGN_POWER_OF_TWO(cm->width, MI_SIZE_LOG2);
 259   const int aligned_height = ALIGN_POWER_OF_TWO(cm->height, MI_SIZE_LOG2);
 260
 261   set_mb_mi(cm, aligned_width, aligned_height);
 262   setup_mi(cm);
 263
 264   // Initialize the previous frame segment map to 0.
 265   if (cm->last_frame_seg_map)
 266     vpx_memset(cm->last_frame_seg_map, 0, cm->mi_rows * cm->mi_cols);
 267 }
 268
 269 void vp9_swap_mi_and_prev_mi(VP9_COMMON *cm) {
 270   // Swap indices.
 271   const int tmp = cm->mi_idx;
 272   cm->mi_idx = cm->prev_mi_idx;
 273   cm->prev_mi_idx = tmp;
 274
 275   // Current mip will be the prev_mip for the next frame.
 276   cm->mip = cm->mip_array[cm->mi_idx];
 277   cm->prev_mip = cm->mip_array[cm->prev_mi_idx];
 278   cm->mi_grid_base = cm->mi_grid_base_array[cm->mi_idx];
 279   cm->prev_mi_grid_base = cm->mi_grid_base_array[cm->prev_mi_idx];
 280
 281   // Update the upper left visible macroblock ptrs.
 282   cm->mi = cm->mip + cm->mi_stride + 1;
 283   cm->prev_mi = cm->prev_mip + cm->mi_stride + 1;
 284   cm->mi_grid_visible = cm->mi_grid_base + cm->mi_stride + 1;
 285   cm->prev_mi_grid_visible = cm->prev_mi_grid_base + cm->mi_stride + 1;
 286 }