From 9dec7712abd23f8523f1f9c6e1d5c5c8b0844126 Mon Sep 17 00:00:00 2001 From: Jim Bankoski Date: Fri, 31 Jan 2014 17:35:53 -0800 Subject: static function convert to inline or global vp9_blockd.h Change-Id: Ifdd951f24932839f06d1c700371662511dde6ebe --- vp9/common/vp9_blockd.c | 167 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 167 insertions(+) create mode 100644 vp9/common/vp9_blockd.c (limited to 'vp9/common/vp9_blockd.c') diff --git a/vp9/common/vp9_blockd.c b/vp9/common/vp9_blockd.c new file mode 100644 index 000000000..8cc657114 --- /dev/null +++ b/vp9/common/vp9_blockd.c @@ -0,0 +1,167 @@ +/* + * Copyright (c) 2014 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_blockd.h" + +MB_PREDICTION_MODE vp9_left_block_mode(const MODE_INFO *cur_mi, + const MODE_INFO *left_mi, int b) { + if (b == 0 || b == 2) { + if (!left_mi || is_inter_block(&left_mi->mbmi)) + return DC_PRED; + + return left_mi->mbmi.sb_type < BLOCK_8X8 ? left_mi->bmi[b + 1].as_mode + : left_mi->mbmi.mode; + } else { + assert(b == 1 || b == 3); + return cur_mi->bmi[b - 1].as_mode; + } +} + +MB_PREDICTION_MODE vp9_above_block_mode(const MODE_INFO *cur_mi, + const MODE_INFO *above_mi, int b) { + if (b == 0 || b == 1) { + if (!above_mi || is_inter_block(&above_mi->mbmi)) + return DC_PRED; + + return above_mi->mbmi.sb_type < BLOCK_8X8 ? above_mi->bmi[b + 2].as_mode + : above_mi->mbmi.mode; + } else { + assert(b == 2 || b == 3); + return cur_mi->bmi[b - 2].as_mode; + } +} + +void vp9_foreach_transformed_block_in_plane( + const MACROBLOCKD *const xd, BLOCK_SIZE bsize, int plane, + foreach_transformed_block_visitor visit, void *arg) { + const struct macroblockd_plane *const pd = &xd->plane[plane]; + const MB_MODE_INFO* mbmi = &xd->mi_8x8[0]->mbmi; + // block and transform sizes, in number of 4x4 blocks log 2 ("*_b") + // 4x4=0, 8x8=2, 16x16=4, 32x32=6, 64x64=8 + // transform size varies per plane, look it up in a common way. + const TX_SIZE tx_size = plane ? get_uv_tx_size(mbmi) + : mbmi->tx_size; + const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, pd); + const int num_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize]; + const int num_4x4_h = num_4x4_blocks_high_lookup[plane_bsize]; + const int step = 1 << (tx_size << 1); + int i; + + // If mb_to_right_edge is < 0 we are in a situation in which + // the current block size extends into the UMV and we won't + // visit the sub blocks that are wholly within the UMV. + if (xd->mb_to_right_edge < 0 || xd->mb_to_bottom_edge < 0) { + int r, c; + + int max_blocks_wide = num_4x4_w; + int max_blocks_high = num_4x4_h; + + // xd->mb_to_right_edge is in units of pixels * 8. This converts + // it to 4x4 block sizes. + if (xd->mb_to_right_edge < 0) + max_blocks_wide += (xd->mb_to_right_edge >> (5 + pd->subsampling_x)); + + if (xd->mb_to_bottom_edge < 0) + max_blocks_high += (xd->mb_to_bottom_edge >> (5 + pd->subsampling_y)); + + i = 0; + // Unlike the normal case - in here we have to keep track of the + // row and column of the blocks we use so that we know if we are in + // the unrestricted motion border. + for (r = 0; r < num_4x4_h; r += (1 << tx_size)) { + for (c = 0; c < num_4x4_w; c += (1 << tx_size)) { + if (r < max_blocks_high && c < max_blocks_wide) + visit(plane, i, plane_bsize, tx_size, arg); + i += step; + } + } + } else { + for (i = 0; i < num_4x4_w * num_4x4_h; i += step) + visit(plane, i, plane_bsize, tx_size, arg); + } +} + +void vp9_foreach_transformed_block(const MACROBLOCKD* const xd, + BLOCK_SIZE bsize, + foreach_transformed_block_visitor visit, + void *arg) { + int plane; + + for (plane = 0; plane < MAX_MB_PLANE; plane++) + vp9_foreach_transformed_block_in_plane(xd, bsize, plane, visit, arg); +} + +void vp9_foreach_transformed_block_uv(const MACROBLOCKD* const xd, + BLOCK_SIZE bsize, + foreach_transformed_block_visitor visit, + void *arg) { + int plane; + + for (plane = 1; plane < MAX_MB_PLANE; plane++) + vp9_foreach_transformed_block_in_plane(xd, bsize, plane, visit, arg); +} + +void vp9_set_contexts(const MACROBLOCKD *xd, struct macroblockd_plane *pd, + BLOCK_SIZE plane_bsize, TX_SIZE tx_size, int has_eob, + int aoff, int loff) { + ENTROPY_CONTEXT *const a = pd->above_context + aoff; + ENTROPY_CONTEXT *const l = pd->left_context + loff; + const int tx_size_in_blocks = 1 << tx_size; + + // above + if (has_eob && xd->mb_to_right_edge < 0) { + int i; + const int blocks_wide = num_4x4_blocks_wide_lookup[plane_bsize] + + (xd->mb_to_right_edge >> (5 + pd->subsampling_x)); + int above_contexts = tx_size_in_blocks; + if (above_contexts + aoff > blocks_wide) + above_contexts = blocks_wide - aoff; + + for (i = 0; i < above_contexts; ++i) + a[i] = has_eob; + for (i = above_contexts; i < tx_size_in_blocks; ++i) + a[i] = 0; + } else { + vpx_memset(a, has_eob, sizeof(ENTROPY_CONTEXT) * tx_size_in_blocks); + } + + // left + if (has_eob && xd->mb_to_bottom_edge < 0) { + int i; + const int blocks_high = num_4x4_blocks_high_lookup[plane_bsize] + + (xd->mb_to_bottom_edge >> (5 + pd->subsampling_y)); + int left_contexts = tx_size_in_blocks; + if (left_contexts + loff > blocks_high) + left_contexts = blocks_high - loff; + + for (i = 0; i < left_contexts; ++i) + l[i] = has_eob; + for (i = left_contexts; i < tx_size_in_blocks; ++i) + l[i] = 0; + } else { + vpx_memset(l, has_eob, sizeof(ENTROPY_CONTEXT) * tx_size_in_blocks); + } +} + +void vp9_setup_block_planes(MACROBLOCKD *xd, int ss_x, int ss_y) { + int i; + + for (i = 0; i < MAX_MB_PLANE; i++) { + xd->plane[i].plane_type = i ? PLANE_TYPE_UV : PLANE_TYPE_Y; + xd->plane[i].subsampling_x = i ? ss_x : 0; + xd->plane[i].subsampling_y = i ? ss_y : 0; + } +#if CONFIG_ALPHA + // TODO(jkoleszar): Using the Y w/h for now + xd->plane[3].plane_type = PLANE_TYPE_Y; + xd->plane[3].subsampling_x = 0; + xd->plane[3].subsampling_y = 0; +#endif +} -- cgit v1.2.3