ref: 04d62a989bcd2c32be546e4f5129171f9ff0b037
dir: /vp8/common/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_ports/config.h"
#include "blockd.h"
#include "vpx_mem/vpx_mem.h"
#include "onyxc_int.h"
#include "findnearmv.h"
#include "entropymode.h"
#include "entropymv.h"
#include "systemdependent.h"
extern void vp8_init_scan_order_mask();
void update_mode_info_border(VP8_COMMON *cpi, MODE_INFO *mi_base) {
int stride = cpi->mode_info_stride;
int i;
// Clear down top border row
vpx_memset(mi_base, 0, sizeof(MODE_INFO) * cpi->mode_info_stride);
// Clear left border column
for (i = 1; i < cpi->mb_rows + 1; i++) {
vpx_memset(&mi_base[i * stride], 0, sizeof(MODE_INFO));
}
}
void update_mode_info_in_image(VP8_COMMON *cpi, MODE_INFO *mi) {
int i, j;
// For each in image mode_info element set the in image flag to 1
for (i = 0; i < cpi->mb_rows; i++) {
for (j = 0; j < cpi->mb_cols; j++) {
mi->mbmi.mb_in_image = 1;
mi++; // Next element in the row
}
mi++; // Step over border element at start of next row
}
}
void vp8_de_alloc_frame_buffers(VP8_COMMON *oci) {
int i;
for (i = 0; i < NUM_YV12_BUFFERS; i++)
vp8_yv12_de_alloc_frame_buffer(&oci->yv12_fb[i]);
vp8_yv12_de_alloc_frame_buffer(&oci->temp_scale_frame);
vp8_yv12_de_alloc_frame_buffer(&oci->post_proc_buffer);
vpx_free(oci->above_context);
vpx_free(oci->mip);
vpx_free(oci->prev_mip);
oci->above_context = 0;
oci->mip = 0;
oci->prev_mip = 0;
}
int vp8_alloc_frame_buffers(VP8_COMMON *oci, int width, int height) {
int i;
vp8_de_alloc_frame_buffers(oci);
/* our internal buffers are always multiples of 16 */
if ((width & 0xf) != 0)
width += 16 - (width & 0xf);
if ((height & 0xf) != 0)
height += 16 - (height & 0xf);
for (i = 0; i < NUM_YV12_BUFFERS; i++) {
oci->fb_idx_ref_cnt[i] = 0;
oci->yv12_fb[i].flags = 0;
if (vp8_yv12_alloc_frame_buffer(&oci->yv12_fb[i], width, height, VP8BORDERINPIXELS) < 0) {
vp8_de_alloc_frame_buffers(oci);
return 1;
}
}
oci->new_fb_idx = 0;
oci->lst_fb_idx = 1;
oci->gld_fb_idx = 2;
oci->alt_fb_idx = 3;
oci->fb_idx_ref_cnt[0] = 1;
oci->fb_idx_ref_cnt[1] = 1;
oci->fb_idx_ref_cnt[2] = 1;
oci->fb_idx_ref_cnt[3] = 1;
if (vp8_yv12_alloc_frame_buffer(&oci->temp_scale_frame, width, 16, VP8BORDERINPIXELS) < 0) {
vp8_de_alloc_frame_buffers(oci);
return 1;
}
if (vp8_yv12_alloc_frame_buffer(&oci->post_proc_buffer, width, height, VP8BORDERINPIXELS) < 0) {
vp8_de_alloc_frame_buffers(oci);
return 1;
}
oci->mb_rows = height >> 4;
oci->mb_cols = width >> 4;
oci->MBs = oci->mb_rows * oci->mb_cols;
oci->mode_info_stride = oci->mb_cols + 1;
oci->mip = vpx_calloc((oci->mb_cols + 1) * (oci->mb_rows + 1), sizeof(MODE_INFO));
if (!oci->mip) {
vp8_de_alloc_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->mb_cols + 1) * (oci->mb_rows + 1), sizeof(MODE_INFO));
if (!oci->prev_mip) {
vp8_de_alloc_frame_buffers(oci);
return 1;
}
oci->prev_mi = oci->prev_mip + oci->mode_info_stride + 1;
oci->above_context = vpx_calloc(sizeof(ENTROPY_CONTEXT_PLANES) * oci->mb_cols, 1);
if (!oci->above_context) {
vp8_de_alloc_frame_buffers(oci);
return 1;
}
update_mode_info_border(oci, oci->mip);
update_mode_info_in_image(oci, oci->mi);
return 0;
}
void vp8_setup_version(VP8_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->filter_type = NORMAL_LOOPFILTER;
cm->use_bilinear_mc_filter = 0;
cm->full_pixel = 0;
break;
case 1:
cm->no_lpf = 0;
cm->filter_type = SIMPLE_LOOPFILTER;
cm->use_bilinear_mc_filter = 1;
cm->full_pixel = 0;
break;
case 2:
case 3:
cm->no_lpf = 1;
cm->filter_type = NORMAL_LOOPFILTER;
cm->use_bilinear_mc_filter = 1;
cm->full_pixel = 0;
break;
// Full pel only code deprecated in experimental code base
// case 3:
// cm->no_lpf = 1;
// cm->filter_type = SIMPLE_LOOPFILTER;
// cm->use_bilinear_mc_filter = 1;
// cm->full_pixel = 1;
// break;
}
}
void vp8_create_common(VP8_COMMON *oci) {
vp8_machine_specific_config(oci);
vp8_init_mbmode_probs(oci);
vp8_default_bmode_probs(oci->fc.bmode_prob);
oci->txfm_mode = ONLY_4X4;
oci->mb_no_coeff_skip = 1;
oci->comp_pred_mode = HYBRID_PREDICTION;
oci->no_lpf = 0;
oci->filter_type = NORMAL_LOOPFILTER;
oci->use_bilinear_mc_filter = 0;
oci->full_pixel = 0;
oci->clr_type = REG_YUV;
oci->clamp_type = RECON_CLAMP_REQUIRED;
/* Initialise reference frame sign bias structure to defaults */
vpx_memset(oci->ref_frame_sign_bias, 0, sizeof(oci->ref_frame_sign_bias));
/* Default disable buffer to buffer copying */
oci->copy_buffer_to_gf = 0;
oci->copy_buffer_to_arf = 0;
oci->kf_ymode_probs_update = 0;
}
void vp8_remove_common(VP8_COMMON *oci) {
vp8_de_alloc_frame_buffers(oci);
}
void vp8_initialize_common() {
vp8_coef_tree_initialize();
vp8_entropy_mode_init();
vp8_entropy_mv_init();
}