ref: 49d7abc0ecaf52331ffa7775955a77d056fbb6bb
dir: /vp9/common/vp9_alloccommon.c/
/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "./vpx_config.h"
#include "vpx_mem/vpx_mem.h"
#include "vp9/common/vp9_blockd.h"
#include "vp9/common/vp9_entropymode.h"
#include "vp9/common/vp9_entropymv.h"
#include "vp9/common/vp9_onyxc_int.h"
#include "vp9/common/vp9_systemdependent.h"
static void clear_mi_border(const VP9_COMMON *cm, MODE_INFO *mi) {
int i;
// Top border row
vpx_memset(mi, 0, sizeof(*mi) * cm->mi_stride);
// Left border column
for (i = 1; i < cm->mi_rows + 1; ++i)
vpx_memset(&mi[i * cm->mi_stride], 0, sizeof(*mi));
}
void vp9_set_mb_mi(VP9_COMMON *cm, int width, int height) {
const int aligned_width = ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2);
const int aligned_height = ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2);
cm->mi_cols = aligned_width >> MI_SIZE_LOG2;
cm->mi_rows = aligned_height >> MI_SIZE_LOG2;
cm->mi_stride = calc_mi_size(cm->mi_cols);
cm->mb_cols = (cm->mi_cols + 1) >> 1;
cm->mb_rows = (cm->mi_rows + 1) >> 1;
cm->MBs = cm->mb_rows * cm->mb_cols;
}
static void setup_mi(VP9_COMMON *cm) {
cm->mi = cm->mip + cm->mi_stride + 1;
cm->prev_mi = cm->prev_mip + cm->mi_stride + 1;
cm->mi_grid_visible = cm->mi_grid_base + cm->mi_stride + 1;
cm->prev_mi_grid_visible = cm->prev_mi_grid_base + cm->mi_stride + 1;
vpx_memset(cm->mip, 0, cm->mi_stride * (cm->mi_rows + 1) * sizeof(*cm->mip));
vpx_memset(cm->mi_grid_base, 0, cm->mi_stride * (cm->mi_rows + 1) *
sizeof(*cm->mi_grid_base));
clear_mi_border(cm, cm->prev_mip);
}
static int alloc_mi(VP9_COMMON *cm, int mi_size) {
int i;
for (i = 0; i < 2; ++i) {
cm->mip_array[i] =
(MODE_INFO *)vpx_calloc(mi_size, sizeof(MODE_INFO));
if (cm->mip_array[i] == NULL)
return 1;
cm->mi_grid_base_array[i] =
(MODE_INFO **)vpx_calloc(mi_size, sizeof(MODE_INFO*));
if (cm->mi_grid_base_array[i] == NULL)
return 1;
}
cm->mi_alloc_size = mi_size;
// Init the index.
cm->mi_idx = 0;
cm->prev_mi_idx = 1;
cm->mip = cm->mip_array[cm->mi_idx];
cm->prev_mip = cm->mip_array[cm->prev_mi_idx];
cm->mi_grid_base = cm->mi_grid_base_array[cm->mi_idx];
cm->prev_mi_grid_base = cm->mi_grid_base_array[cm->prev_mi_idx];
return 0;
}
static void free_mi(VP9_COMMON *cm) {
int i;
for (i = 0; i < 2; ++i) {
vpx_free(cm->mip_array[i]);
cm->mip_array[i] = NULL;
vpx_free(cm->mi_grid_base_array[i]);
cm->mi_grid_base_array[i] = NULL;
}
cm->mip = NULL;
cm->prev_mip = NULL;
cm->mi_grid_base = NULL;
cm->prev_mi_grid_base = NULL;
}
void vp9_free_ref_frame_buffers(VP9_COMMON *cm) {
int i;
for (i = 0; i < FRAME_BUFFERS; ++i) {
vp9_free_frame_buffer(&cm->frame_bufs[i].buf);
if (cm->frame_bufs[i].ref_count > 0 &&
cm->frame_bufs[i].raw_frame_buffer.data != NULL) {
cm->release_fb_cb(cm->cb_priv, &cm->frame_bufs[i].raw_frame_buffer);
cm->frame_bufs[i].ref_count = 0;
}
}
vp9_free_frame_buffer(&cm->post_proc_buffer);
}
void vp9_free_context_buffers(VP9_COMMON *cm) {
free_mi(cm);
vpx_free(cm->last_frame_seg_map);
cm->last_frame_seg_map = NULL;
vpx_free(cm->above_context);
cm->above_context = NULL;
vpx_free(cm->above_seg_context);
cm->above_seg_context = NULL;
}
int vp9_alloc_context_buffers(VP9_COMMON *cm, int width, int height) {
vp9_free_context_buffers(cm);
vp9_set_mb_mi(cm, width, height);
if (alloc_mi(cm, cm->mi_stride * calc_mi_size(cm->mi_rows)))
goto fail;
cm->last_frame_seg_map = (uint8_t *)vpx_calloc(cm->mi_rows * cm->mi_cols, 1);
if (!cm->last_frame_seg_map) goto fail;
cm->above_context = (ENTROPY_CONTEXT *)vpx_calloc(
2 * mi_cols_aligned_to_sb(cm->mi_cols) * MAX_MB_PLANE,
sizeof(*cm->above_context));
if (!cm->above_context) goto fail;
cm->above_seg_context = (PARTITION_CONTEXT *)vpx_calloc(
mi_cols_aligned_to_sb(cm->mi_cols), sizeof(*cm->above_seg_context));
if (!cm->above_seg_context) goto fail;
return 0;
fail:
vp9_free_context_buffers(cm);
return 1;
}
static void init_frame_bufs(VP9_COMMON *cm) {
int i;
cm->new_fb_idx = FRAME_BUFFERS - 1;
cm->frame_bufs[cm->new_fb_idx].ref_count = 1;
for (i = 0; i < REF_FRAMES; ++i) {
cm->ref_frame_map[i] = i;
cm->frame_bufs[i].ref_count = 1;
}
}
int vp9_alloc_ref_frame_buffers(VP9_COMMON *cm, int width, int height) {
int i;
const int ss_x = cm->subsampling_x;
const int ss_y = cm->subsampling_y;
vp9_free_ref_frame_buffers(cm);
for (i = 0; i < FRAME_BUFFERS; ++i) {
cm->frame_bufs[i].ref_count = 0;
if (vp9_alloc_frame_buffer(&cm->frame_bufs[i].buf, width, height,
ss_x, ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS) < 0)
goto fail;
}
init_frame_bufs(cm);
#if CONFIG_INTERNAL_STATS || CONFIG_VP9_POSTPROC
if (vp9_alloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS) < 0)
goto fail;
#endif
return 0;
fail:
vp9_free_ref_frame_buffers(cm);
return 1;
}
void vp9_remove_common(VP9_COMMON *cm) {
vp9_free_ref_frame_buffers(cm);
vp9_free_context_buffers(cm);
vp9_free_internal_frame_buffers(&cm->int_frame_buffers);
}
void vp9_init_context_buffers(VP9_COMMON *cm) {
setup_mi(cm);
if (cm->last_frame_seg_map)
vpx_memset(cm->last_frame_seg_map, 0, cm->mi_rows * cm->mi_cols);
}
void vp9_swap_mi_and_prev_mi(VP9_COMMON *cm) {
// Swap indices.
const int tmp = cm->mi_idx;
cm->mi_idx = cm->prev_mi_idx;
cm->prev_mi_idx = tmp;
// Current mip will be the prev_mip for the next frame.
cm->mip = cm->mip_array[cm->mi_idx];
cm->prev_mip = cm->mip_array[cm->prev_mi_idx];
cm->mi_grid_base = cm->mi_grid_base_array[cm->mi_idx];
cm->prev_mi_grid_base = cm->mi_grid_base_array[cm->prev_mi_idx];
// Update the upper left visible macroblock ptrs.
cm->mi = cm->mip + cm->mi_stride + 1;
cm->prev_mi = cm->prev_mip + cm->mi_stride + 1;
cm->mi_grid_visible = cm->mi_grid_base + cm->mi_stride + 1;
cm->prev_mi_grid_visible = cm->prev_mi_grid_base + cm->mi_stride + 1;
}