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John Koleszar authored
A large number of functions were defined with external linkage, even though they were only used from within one file. This patch changes their linkage to static and removes the vp8_ prefix from their names, which should make it more obvious to the reader that the function is contained within the current translation unit. Functions that were not referenced were removed. These symbols were identified by: $ nm -A libvpx.a | sort -k3 | uniq -c -f2 | grep ' [A-Z] ' \ | sort | grep '^ *1 ' Change-Id: I59609f58ab65312012c047036ae1e0634f795779429dc676
vp9_reconinter.c 17.48 KiB
/* * 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 <assert.h>#include "./vpx_config.h"#include "vpx/vpx_integer.h"#include "vp9/common/vp9_blockd.h"#include "vp9/common/vp9_filter.h"#include "vp9/common/vp9_reconinter.h"#include "vp9/common/vp9_reconintra.h"void vp9_setup_scale_factors_for_frame(struct scale_factors *scale, YV12_BUFFER_CONFIG *other, int this_w, int this_h) { int other_h = other->y_crop_height; int other_w = other->y_crop_width; scale->x_num = other_w; scale->x_den = this_w; scale->x_offset_q4 = 0; // calculated per-mb scale->x_step_q4 = 16 * other_w / this_w; scale->y_num = other_h; scale->y_den = this_h; scale->y_offset_q4 = 0; // calculated per-mb scale->y_step_q4 = 16 * other_h / this_h; if (scale->x_num == scale->x_den && scale->y_num == scale->y_den) { scale->scale_value_x = unscaled_value; scale->scale_value_y = unscaled_value; scale->set_scaled_offsets = set_offsets_without_scaling; scale->scale_motion_vector_q3_to_q4 = motion_vector_q3_to_q4_without_scaling; scale->scale_motion_vector_component_q4 = motion_vector_component_q4_without_scaling; } else { scale->scale_value_x = scale_value_x_with_scaling; scale->scale_value_y = scale_value_y_with_scaling; scale->set_scaled_offsets = set_offsets_with_scaling; scale->scale_motion_vector_q3_to_q4 = motion_vector_q3_to_q4_with_scaling; scale->scale_motion_vector_component_q4 = motion_vector_component_q4_with_scaling; } // TODO(agrange): Investigate the best choice of functions to use here // for EIGHTTAP_SMOOTH. Since it is not interpolating, need to choose what // to do at full-pel offsets. The current selection, where the filter is // applied in one direction only, and not at all for 0,0, seems to give the // best quality, but it may be worth trying an additional mode that does // do the filtering on full-pel. if (scale->x_step_q4 == 16) { if (scale->y_step_q4 == 16) { // No scaling in either direction. scale->predict[0][0][0] = vp9_convolve_copy; scale->predict[0][0][1] = vp9_convolve_avg; scale->predict[0][1][0] = vp9_convolve8_vert; scale->predict[0][1][1] = vp9_convolve8_avg_vert; scale->predict[1][0][0] = vp9_convolve8_horiz; scale->predict[1][0][1] = vp9_convolve8_avg_horiz; } else { // No scaling in x direction. Must always scale in the y direction.7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
scale->predict[0][0][0] = vp9_convolve8_vert;
scale->predict[0][0][1] = vp9_convolve8_avg_vert;
scale->predict[0][1][0] = vp9_convolve8_vert;
scale->predict[0][1][1] = vp9_convolve8_avg_vert;
scale->predict[1][0][0] = vp9_convolve8;
scale->predict[1][0][1] = vp9_convolve8_avg;
}
} else {
if (scale->y_step_q4 == 16) {
// No scaling in the y direction. Must always scale in the x direction.
scale->predict[0][0][0] = vp9_convolve8_horiz;
scale->predict[0][0][1] = vp9_convolve8_avg_horiz;
scale->predict[0][1][0] = vp9_convolve8;
scale->predict[0][1][1] = vp9_convolve8_avg;
scale->predict[1][0][0] = vp9_convolve8_horiz;
scale->predict[1][0][1] = vp9_convolve8_avg_horiz;
} else {
// Must always scale in both directions.
scale->predict[0][0][0] = vp9_convolve8;
scale->predict[0][0][1] = vp9_convolve8_avg;
scale->predict[0][1][0] = vp9_convolve8;
scale->predict[0][1][1] = vp9_convolve8_avg;
scale->predict[1][0][0] = vp9_convolve8;
scale->predict[1][0][1] = vp9_convolve8_avg;
}
}
// 2D subpel motion always gets filtered in both directions
scale->predict[1][1][0] = vp9_convolve8;
scale->predict[1][1][1] = vp9_convolve8_avg;
}
void vp9_setup_interp_filters(MACROBLOCKD *xd,
INTERPOLATIONFILTERTYPE mcomp_filter_type,
VP9_COMMON *cm) {
if (xd->mode_info_context) {
MB_MODE_INFO *mbmi = &xd->mode_info_context->mbmi;
set_scale_factors(xd,
mbmi->ref_frame - 1,
mbmi->second_ref_frame - 1,
cm->active_ref_scale);
}
switch (mcomp_filter_type) {
case EIGHTTAP:
case SWITCHABLE:
xd->subpix.filter_x = xd->subpix.filter_y = vp9_sub_pel_filters_8;
break;
case EIGHTTAP_SMOOTH:
xd->subpix.filter_x = xd->subpix.filter_y = vp9_sub_pel_filters_8lp;
break;
case EIGHTTAP_SHARP:
xd->subpix.filter_x = xd->subpix.filter_y = vp9_sub_pel_filters_8s;
break;
case BILINEAR:
xd->subpix.filter_x = xd->subpix.filter_y = vp9_bilinear_filters;
break;
#if CONFIG_ENABLE_6TAP
case SIXTAP:
xd->subpix.filter_x = xd->subpix.filter_y = vp9_sub_pel_filters_6;
break;
#endif
}
assert(((intptr_t)xd->subpix.filter_x & 0xff) == 0);
}
void vp9_copy_mem16x16_c(const uint8_t *src,
int src_stride,
uint8_t *dst,
int dst_stride) {
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int r;
for (r = 0; r < 16; r++) {
#if !(CONFIG_FAST_UNALIGNED)
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
dst[4] = src[4];
dst[5] = src[5];
dst[6] = src[6];
dst[7] = src[7];
dst[8] = src[8];
dst[9] = src[9];
dst[10] = src[10];
dst[11] = src[11];
dst[12] = src[12];
dst[13] = src[13];
dst[14] = src[14];
dst[15] = src[15];
#else
((uint32_t *)dst)[0] = ((const uint32_t *)src)[0];
((uint32_t *)dst)[1] = ((const uint32_t *)src)[1];
((uint32_t *)dst)[2] = ((const uint32_t *)src)[2];
((uint32_t *)dst)[3] = ((const uint32_t *)src)[3];
#endif
src += src_stride;
dst += dst_stride;
}
}
void vp9_copy_mem8x8_c(const uint8_t *src,
int src_stride,
uint8_t *dst,
int dst_stride) {
int r;
for (r = 0; r < 8; r++) {
#if !(CONFIG_FAST_UNALIGNED)
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
dst[4] = src[4];
dst[5] = src[5];
dst[6] = src[6];
dst[7] = src[7];
#else
((uint32_t *)dst)[0] = ((const uint32_t *)src)[0];
((uint32_t *)dst)[1] = ((const uint32_t *)src)[1];
#endif
src += src_stride;
dst += dst_stride;
}
}
void vp9_copy_mem8x4_c(const uint8_t *src,
int src_stride,
uint8_t *dst,
int dst_stride) {
int r;
for (r = 0; r < 4; r++) {
#if !(CONFIG_FAST_UNALIGNED)
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280
dst[4] = src[4];
dst[5] = src[5];
dst[6] = src[6];
dst[7] = src[7];
#else
((uint32_t *)dst)[0] = ((const uint32_t *)src)[0];
((uint32_t *)dst)[1] = ((const uint32_t *)src)[1];
#endif
src += src_stride;
dst += dst_stride;
}
}
void vp9_build_inter_predictor(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int_mv *mv_q3,
const struct scale_factors *scale,
int w, int h, int weight,
const struct subpix_fn_table *subpix) {
int_mv32 mv = scale->scale_motion_vector_q3_to_q4(mv_q3, scale);
src += (mv.as_mv.row >> 4) * src_stride + (mv.as_mv.col >> 4);
scale->predict[!!(mv.as_mv.col & 15)][!!(mv.as_mv.row & 15)][weight](
src, src_stride, dst, dst_stride,
subpix->filter_x[mv.as_mv.col & 15], scale->x_step_q4,
subpix->filter_y[mv.as_mv.row & 15], scale->y_step_q4,
w, h);
}
void vp9_build_inter_predictor_q4(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int_mv *mv_q4,
const struct scale_factors *scale,
int w, int h, int weight,
const struct subpix_fn_table *subpix) {
const int scaled_mv_row_q4 =
scale->scale_motion_vector_component_q4(mv_q4->as_mv.row,
scale->y_num, scale->y_den,
scale->y_offset_q4);
const int scaled_mv_col_q4 =
scale->scale_motion_vector_component_q4(mv_q4->as_mv.col,
scale->x_num, scale->x_den,
scale->x_offset_q4);
const int subpel_x = scaled_mv_col_q4 & 15;
const int subpel_y = scaled_mv_row_q4 & 15;
src += (scaled_mv_row_q4 >> 4) * src_stride + (scaled_mv_col_q4 >> 4);
scale->predict[!!subpel_x][!!subpel_y][weight](
src, src_stride, dst, dst_stride,
subpix->filter_x[subpel_x], scale->x_step_q4,
subpix->filter_y[subpel_y], scale->y_step_q4,
w, h);
}
static INLINE int round_mv_comp_q4(int value) {
return (value < 0 ? value - 2 : value + 2) / 4;
}
static int mi_mv_pred_row_q4(MACROBLOCKD *mb, int off, int idx) {
const int temp = mb->mode_info_context->bmi[off + 0].as_mv[idx].as_mv.row +
mb->mode_info_context->bmi[off + 1].as_mv[idx].as_mv.row +
mb->mode_info_context->bmi[off + 4].as_mv[idx].as_mv.row +
mb->mode_info_context->bmi[off + 5].as_mv[idx].as_mv.row;
return round_mv_comp_q4(temp);
}
static int mi_mv_pred_col_q4(MACROBLOCKD *mb, int off, int idx) {
const int temp = mb->mode_info_context->bmi[off + 0].as_mv[idx].as_mv.col +
mb->mode_info_context->bmi[off + 1].as_mv[idx].as_mv.col +
mb->mode_info_context->bmi[off + 4].as_mv[idx].as_mv.col +
mb->mode_info_context->bmi[off + 5].as_mv[idx].as_mv.col;
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return round_mv_comp_q4(temp);
}
// TODO(jkoleszar): yet another mv clamping function :-(
MV clamp_mv_to_umv_border_sb(const MV *src_mv,
int bwl, int bhl, int ss_x, int ss_y,
int mb_to_left_edge, int mb_to_top_edge,
int mb_to_right_edge, int mb_to_bottom_edge) {
/* If the MV points so far into the UMV border that no visible pixels
* are used for reconstruction, the subpel part of the MV can be
* discarded and the MV limited to 16 pixels with equivalent results.
*/
const int spel_left = (VP9_INTERP_EXTEND + (4 << bwl)) << 4;
const int spel_right = spel_left - (1 << 4);
const int spel_top = (VP9_INTERP_EXTEND + (4 << bhl)) << 4;
const int spel_bottom = spel_top - (1 << 4);
MV clamped_mv;
assert(ss_x <= 1);
assert(ss_y <= 1);
clamped_mv.col = clamp(src_mv->col << (1 - ss_x),
(mb_to_left_edge << (1 - ss_x)) - spel_left,
(mb_to_right_edge << (1 - ss_x)) + spel_right);
clamped_mv.row = clamp(src_mv->row << (1 - ss_y),
(mb_to_top_edge << (1 - ss_y)) - spel_top,
(mb_to_bottom_edge << (1 - ss_y)) + spel_bottom);
return clamped_mv;
}
// TODO(jkoleszar): In principle, nothing has to depend on this, but it's
// currently required. Some users look at the mi->bmi, some look at the
// xd->bmi.
static void duplicate_splitmv_bmi(MACROBLOCKD *xd) {
int i;
for (i = 0; i < 16; i += 2) {
xd->block[i + 0].bmi = xd->mode_info_context->bmi[i + 0];
xd->block[i + 1].bmi = xd->mode_info_context->bmi[i + 1];
}
}
struct build_inter_predictors_args {
MACROBLOCKD *xd;
int x;
int y;
uint8_t* dst[MAX_MB_PLANE];
int dst_stride[MAX_MB_PLANE];
uint8_t* pre[2][MAX_MB_PLANE];
int pre_stride[2][MAX_MB_PLANE];
};
static void build_inter_predictors(int plane, int block,
BLOCK_SIZE_TYPE bsize,
int pred_w, int pred_h,
void *argv) {
const struct build_inter_predictors_args* const arg = argv;
MACROBLOCKD * const xd = arg->xd;
const int bwl = b_width_log2(bsize) - xd->plane[plane].subsampling_x;
const int bhl = b_height_log2(bsize) - xd->plane[plane].subsampling_y;
const int bh = 4 << bhl, bw = 4 << bwl;
const int x_idx = block & ((1 << bwl) - 1), y_idx = block >> bwl;
const int x = x_idx * 4, y = y_idx * 4;
const int use_second_ref = xd->mode_info_context->mbmi.second_ref_frame > 0;
int which_mv;
assert(x < bw);
assert(y < bh);
assert(xd->mode_info_context->mbmi.mode == SPLITMV || 4 << pred_w == bw);
assert(xd->mode_info_context->mbmi.mode == SPLITMV || 4 << pred_h == bh);
for (which_mv = 0; which_mv < 1 + use_second_ref; ++which_mv) {
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// source
const uint8_t * const base_pre = arg->pre[which_mv][plane];
const int pre_stride = arg->pre_stride[which_mv][plane];
const uint8_t *const pre = base_pre +
scaled_buffer_offset(x, y, pre_stride, &xd->scale_factor[which_mv]);
struct scale_factors * const scale =
plane == 0 ? &xd->scale_factor[which_mv] : &xd->scale_factor_uv[which_mv];
// dest
uint8_t *const dst = arg->dst[plane] + arg->dst_stride[plane] * y + x;
// motion vector
const MV *mv;
MV split_chroma_mv;
int_mv clamped_mv;
if (xd->mode_info_context->mbmi.mode == SPLITMV) {
if (plane == 0) {
mv = &xd->block[block].bmi.as_mv[which_mv].as_mv;
} else {
const int y_block = (block & 2) * 4 + (block & 1) * 2;
split_chroma_mv.row = mi_mv_pred_row_q4(xd, y_block, which_mv);
split_chroma_mv.col = mi_mv_pred_col_q4(xd, y_block, which_mv);
mv = &split_chroma_mv;
}
} else {
mv = &xd->mode_info_context->mbmi.mv[which_mv].as_mv;
}
/* TODO(jkoleszar): This clamping is done in the incorrect place for the
* scaling case. It needs to be done on the scaled MV, not the pre-scaling
* MV. Note however that it performs the subsampling aware scaling so
* that the result is always q4.
*/
clamped_mv.as_mv = clamp_mv_to_umv_border_sb(mv, bwl, bhl,
xd->plane[plane].subsampling_x,
xd->plane[plane].subsampling_y,
xd->mb_to_left_edge,
xd->mb_to_top_edge,
xd->mb_to_right_edge,
xd->mb_to_bottom_edge);
scale->set_scaled_offsets(scale, arg->y + y, arg->x + x);
vp9_build_inter_predictor_q4(pre, pre_stride,
dst, arg->dst_stride[plane],
&clamped_mv, &xd->scale_factor[which_mv],
4 << pred_w, 4 << pred_h, which_mv,
&xd->subpix);
}
}
void vp9_build_inter_predictors_sby(MACROBLOCKD *xd,
int mb_row,
int mb_col,
BLOCK_SIZE_TYPE bsize) {
struct build_inter_predictors_args args = {
xd, mb_col * 16, mb_row * 16,
{xd->plane[0].dst.buf, NULL, NULL}, {xd->plane[0].dst.stride, 0, 0},
{{xd->plane[0].pre[0].buf, NULL, NULL},
{xd->plane[0].pre[1].buf, NULL, NULL}},
{{xd->plane[0].pre[0].stride, 0, 0}, {xd->plane[0].pre[1].stride, 0, 0}},
};
// TODO(jkoleszar): This is a hack no matter where you put it, but does it
// belong here?
if (xd->mode_info_context->mbmi.mode == SPLITMV)
duplicate_splitmv_bmi(xd);
foreach_predicted_block_in_plane(xd, bsize, 0, build_inter_predictors, &args);
}
void vp9_build_inter_predictors_sbuv(MACROBLOCKD *xd,
421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467
int mb_row,
int mb_col,
BLOCK_SIZE_TYPE bsize) {
struct build_inter_predictors_args args = {
xd, mb_col * 16, mb_row * 16,
{NULL, xd->plane[1].dst.buf, xd->plane[2].dst.buf},
{0, xd->plane[1].dst.stride, xd->plane[1].dst.stride},
{{NULL, xd->plane[1].pre[0].buf, xd->plane[2].pre[0].buf},
{NULL, xd->plane[1].pre[1].buf, xd->plane[2].pre[1].buf}},
{{0, xd->plane[1].pre[0].stride, xd->plane[1].pre[0].stride},
{0, xd->plane[1].pre[1].stride, xd->plane[1].pre[1].stride}},
};
foreach_predicted_block_uv(xd, bsize, build_inter_predictors, &args);
}
void vp9_build_inter_predictors_sb(MACROBLOCKD *xd,
int mb_row, int mb_col,
BLOCK_SIZE_TYPE bsize) {
#if CONFIG_COMP_INTERINTRA_PRED
uint8_t *const y = xd->plane[0].dst.buf;
uint8_t *const u = xd->plane[1].dst.buf;
uint8_t *const v = xd->plane[2].dst.buf;
const int y_stride = xd->plane[0].dst.stride;
const int uv_stride = xd->plane[1].dst.stride;
#endif
vp9_build_inter_predictors_sby(xd, mb_row, mb_col, bsize);
vp9_build_inter_predictors_sbuv(xd, mb_row, mb_col, bsize);
#if CONFIG_COMP_INTERINTRA_PRED
if (xd->mode_info_context->mbmi.second_ref_frame == INTRA_FRAME) {
if (bsize == BLOCK_SIZE_SB32X32)
vp9_build_interintra_32x32_predictors_sb(xd, y, u, v,
y_stride, uv_stride);
else
vp9_build_interintra_64x64_predictors_sb(xd, y, u, v,
y_stride, uv_stride);
}
#endif
}
/*encoder only*/
void vp9_build_inter4x4_predictors_mbuv(MACROBLOCKD *xd,
int mb_row, int mb_col) {
vp9_build_inter_predictors_sbuv(xd, mb_row, mb_col,
BLOCK_SIZE_MB16X16);
}