ref: 07443f1589805074b58b04bb551cba3bdb9d169e
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 "vp9/common/vp9_blockd.h"
#include "vpx_mem/vpx_mem.h"
#include "vp9/common/vp9_onyxc_int.h"
#include "vp9/common/vp9_findnearmv.h"
#include "vp9/common/vp9_entropymode.h"
#include "vp9/common/vp9_entropymv.h"
#include "vp9/common/vp9_systemdependent.h"
void vp9_update_mode_info_border(VP9_COMMON *cpi, MODE_INFO *mi) {
const int stride = cpi->mode_info_stride;
int i;
// Clear down top border row
vpx_memset(mi, 0, sizeof(MODE_INFO) * stride);
// Clear left border column
for (i = 1; i < cpi->mi_rows + 1; i++)
vpx_memset(&mi[i * stride], 0, sizeof(MODE_INFO));
}
void vp9_update_mode_info_in_image(VP9_COMMON *cpi, MODE_INFO *mi) {
int i, j;
MODE_INFO *ptr;
// For each in image mode_info element set the in image flag to 1
for (i = 0; i < cpi->mi_rows; i++) {
ptr = mi;
for (j = 0; j < cpi->mi_cols; j++) {
ptr->mbmi.mb_in_image = 1;
ptr++; // Next element in the row
}
// Step over border element at start of next row
mi += cpi->mode_info_stride;
}
}
void vp9_free_frame_buffers(VP9_COMMON *oci) {
int i;
for (i = 0; i < NUM_YV12_BUFFERS; i++)
vp9_free_frame_buffer(&oci->yv12_fb[i]);
vp9_free_frame_buffer(&oci->temp_scale_frame);
vp9_free_frame_buffer(&oci->post_proc_buffer);
vpx_free(oci->mip);
vpx_free(oci->prev_mip);
vpx_free(oci->above_seg_context);
vpx_free(oci->above_context[0]);
for (i = 0; i < MAX_MB_PLANE; i++)
oci->above_context[i] = 0;
oci->mip = 0;
oci->prev_mip = 0;
oci->above_seg_context = 0;
}
int vp9_alloc_frame_buffers(VP9_COMMON *oci, int width, int height) {
int i, mi_cols;
// Our internal buffers are always multiples of 16
const int aligned_width = multiple16(width);
const int aligned_height = multiple16(height);
vp9_free_frame_buffers(oci);
for (i = 0; i < NUM_YV12_BUFFERS; i++) {
oci->fb_idx_ref_cnt[i] = 0;
if (vp9_alloc_frame_buffer(&oci->yv12_fb[i], width, height,
oci->subsampling_x, oci->subsampling_y,
VP9BORDERINPIXELS) < 0) {
vp9_free_frame_buffers(oci);
return 1;
}
}
oci->new_fb_idx = NUM_YV12_BUFFERS - 1;
oci->fb_idx_ref_cnt[oci->new_fb_idx] = 1;
for (i = 0; i < ALLOWED_REFS_PER_FRAME; i++)
oci->active_ref_idx[i] = i;
for (i = 0; i < NUM_REF_FRAMES; i++) {
oci->ref_frame_map[i] = i;
oci->fb_idx_ref_cnt[i] = 1;
}
if (vp9_alloc_frame_buffer(&oci->temp_scale_frame, width, 16,
oci->subsampling_x, oci->subsampling_y,
VP9BORDERINPIXELS) < 0) {
vp9_free_frame_buffers(oci);
return 1;
}
if (vp9_alloc_frame_buffer(&oci->post_proc_buffer, width, height,
oci->subsampling_x, oci->subsampling_y,
VP9BORDERINPIXELS) < 0) {
vp9_free_frame_buffers(oci);
return 1;
}
oci->mb_rows = aligned_height >> 4;
oci->mi_rows = aligned_height >> LOG2_MI_SIZE;
oci->mb_cols = aligned_width >> 4;
oci->mi_cols = aligned_width >> LOG2_MI_SIZE;
oci->MBs = oci->mb_rows * oci->mb_cols;
oci->mode_info_stride = oci->mi_cols + 1;
oci->mip = vpx_calloc(oci->mode_info_stride * (oci->mi_rows + 1),
sizeof(MODE_INFO));
if (!oci->mip) {
vp9_free_frame_buffers(oci);
return 1;
}
oci->mi = oci->mip + oci->mode_info_stride + 1;
/* allocate memory for last frame MODE_INFO array */
oci->prev_mip = vpx_calloc(oci->mode_info_stride * (oci->mi_rows + 1),
sizeof(MODE_INFO));
if (!oci->prev_mip) {
vp9_free_frame_buffers(oci);
return 1;
}
oci->prev_mi = oci->prev_mip + oci->mode_info_stride + 1;
// FIXME(jkoleszar): allocate subsampled arrays for U/V once subsampling
// information is exposed at this level
mi_cols = mi_cols_aligned_to_sb(oci);
oci->above_context[0] = vpx_calloc(sizeof(ENTROPY_CONTEXT) * 6 * mi_cols, 1);
if (!oci->above_context[0]) {
vp9_free_frame_buffers(oci);
return 1;
}
oci->above_context[1] =
oci->above_context[0] + sizeof(ENTROPY_CONTEXT) * 2 * mi_cols;
oci->above_context[2] =
oci->above_context[1] + sizeof(ENTROPY_CONTEXT) * 2 * mi_cols;
oci->above_seg_context =
vpx_calloc(sizeof(PARTITION_CONTEXT) * mi_cols, 1);
if (!oci->above_seg_context) {
vp9_free_frame_buffers(oci);
return 1;
}
vp9_update_mode_info_border(oci, oci->mip);
vp9_update_mode_info_in_image(oci, oci->mi);
return 0;
}
void vp9_setup_version(VP9_COMMON *cm) {
if (cm->version & 0x4) {
if (!CONFIG_EXPERIMENTAL)
vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM,
"Bitstream was created by an experimental "
"encoder");
cm->experimental = 1;
}
switch (cm->version & 0x3) {
case 0:
cm->no_lpf = 0;
cm->use_bilinear_mc_filter = 0;
break;
case 1:
cm->no_lpf = 0;
cm->use_bilinear_mc_filter = 1;
break;
case 2:
case 3:
cm->no_lpf = 1;
cm->use_bilinear_mc_filter = 1;
break;
}
}
void vp9_create_common(VP9_COMMON *oci) {
vp9_machine_specific_config(oci);
vp9_init_mbmode_probs(oci);
vp9_default_bmode_probs(oci->fc.bmode_prob);
oci->txfm_mode = ONLY_4X4;
oci->comp_pred_mode = HYBRID_PREDICTION;
oci->no_lpf = 0;
oci->use_bilinear_mc_filter = 0;
oci->clr_type = REG_YUV;
oci->clamp_type = RECON_CLAMP_REQUIRED;
// Initialize reference frame sign bias structure to defaults
vpx_memset(oci->ref_frame_sign_bias, 0, sizeof(oci->ref_frame_sign_bias));
oci->kf_ymode_probs_update = 0;
}
void vp9_remove_common(VP9_COMMON *oci) {
vp9_free_frame_buffers(oci);
}
void vp9_initialize_common() {
vp9_coef_tree_initialize();
vp9_entropy_mode_init();
vp9_entropy_mv_init();
}
void vp9_update_frame_size(VP9_COMMON *cm) {
const int aligned_width = multiple16(cm->width);
const int aligned_height = multiple16(cm->height);
cm->mb_rows = aligned_height >> 4;
cm->mb_cols = aligned_width >> 4;
cm->mi_rows = aligned_height >> LOG2_MI_SIZE;
cm->mi_cols = aligned_width >> LOG2_MI_SIZE;
cm->MBs = cm->mb_rows * cm->mb_cols;
cm->mode_info_stride = cm->mi_cols + 1;
cm->mi = cm->mip + cm->mode_info_stride + 1;
cm->prev_mi = cm->prev_mip + cm->mode_info_stride + 1;
memset(cm->mip, 0,
cm->mode_info_stride * (cm->mi_rows + 1) * sizeof(MODE_INFO));
vp9_update_mode_info_border(cm, cm->mip);
vp9_update_mode_info_in_image(cm, cm->mi);
vp9_update_mode_info_border(cm, cm->prev_mip);
vp9_update_mode_info_in_image(cm, cm->prev_mi);
}