media/libvpx/libvpx/vp9/common/vp9_tile_common.c
author Johann <johannkoenig@google.com>
Mon, 16 Jan 2017 11:51:27 -0800
changeset 376885 70a5310085fa0c77bfcf88c4180c3e3af438a44d
parent 376446 b1c31c4a0a678194931779e0f13fba7b508eb109
child 377112 58764883978d7959d480b9d2722c16f40f63bf96
permissions -rw-r--r--
Bug 1223692: Update libvpx to v1.6.0. r=rillian This includes the following patches: <patch file> <upstream review commit> <upstream hash> 1237848-check-lookahead-ctx.patch https://chromium-review.googlesource.com/324510 4f780e94a1fa54f22256e0f4d42a77c340a38fa1 block_error_fp.patch https://chromium-review.googlesource.com/282611 ff8505a54d0b3dda220f5c0695519c353c82b933 cast-char-to-uint-before-shift.patch https://chromium-review.googlesource.com/345470 2240d83d7882ce2d5d0826b9ce33b86321d7a724 clamp_abs_lvl_seg.patch https://chromium-review.googlesource.com/315754 2e693eb80e705ea68e23eed19616d22b4778b45a clamp-abs-QIndex.patch https://chromium-review.googlesource.com/315802 ff3674a15e5b1a006546e1edc64c3e778eb34ab1 rename_duplicate_files.patch https://chromium-review.googlesource.com/281967 6a82f0d7fb9ee908c389e8d55444bbaed3d54e9c https://chromium-review.googlesource.com/317880 d36659cec7fab96cedc67db4d511ed7135637d0e vp9_filter_restore_aligment.patch https://chromium-review.googlesource.com/276889 33b3953c548a20c0aee705657df0440a740c28b7 vpx_once.patch https://chromium-review.googlesource.com/312467 2635573a7f2e4bbd259379acf91efb97d983359f MozReview-Commit-ID: R7qB6egl3Z

/*
 *  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 "vp9/common/vp9_tile_common.h"
#include "vp9/common/vp9_onyxc_int.h"
#include "vpx_dsp/vpx_dsp_common.h"

#define MIN_TILE_WIDTH_B64 4
#define MAX_TILE_WIDTH_B64 64

static int get_tile_offset(int idx, int mis, int log2) {
  const int sb_cols = mi_cols_aligned_to_sb(mis) >> MI_BLOCK_SIZE_LOG2;
  const int offset = ((idx * sb_cols) >> log2) << MI_BLOCK_SIZE_LOG2;
  return VPXMIN(offset, mis);
}

void vp9_tile_set_row(TileInfo *tile, const VP9_COMMON *cm, int row) {
  tile->mi_row_start = get_tile_offset(row, cm->mi_rows, cm->log2_tile_rows);
  tile->mi_row_end = get_tile_offset(row + 1, cm->mi_rows, cm->log2_tile_rows);
}

void vp9_tile_set_col(TileInfo *tile, const VP9_COMMON *cm, int col) {
  tile->mi_col_start = get_tile_offset(col, cm->mi_cols, cm->log2_tile_cols);
  tile->mi_col_end = get_tile_offset(col + 1, cm->mi_cols, cm->log2_tile_cols);
}

void vp9_tile_init(TileInfo *tile, const VP9_COMMON *cm, int row, int col) {
  vp9_tile_set_row(tile, cm, row);
  vp9_tile_set_col(tile, cm, col);
}

static int get_min_log2_tile_cols(const int sb64_cols) {
  int min_log2 = 0;
  while ((MAX_TILE_WIDTH_B64 << min_log2) < sb64_cols)
    ++min_log2;
  return min_log2;
}

static int get_max_log2_tile_cols(const int sb64_cols) {
  int max_log2 = 1;
  while ((sb64_cols >> max_log2) >= MIN_TILE_WIDTH_B64)
    ++max_log2;
  return max_log2 - 1;
}

void vp9_get_tile_n_bits(int mi_cols,
                         int *min_log2_tile_cols, int *max_log2_tile_cols) {
  const int sb64_cols = mi_cols_aligned_to_sb(mi_cols) >> MI_BLOCK_SIZE_LOG2;
  *min_log2_tile_cols = get_min_log2_tile_cols(sb64_cols);
  *max_log2_tile_cols = get_max_log2_tile_cols(sb64_cols);
  assert(*min_log2_tile_cols <= *max_log2_tile_cols);
}