diff options
Diffstat (limited to 'media/libvpx/libvpx/vp9/common/vp9_pred_common.h')
| -rw-r--r-- | media/libvpx/libvpx/vp9/common/vp9_pred_common.h | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/vp9_pred_common.h b/media/libvpx/libvpx/vp9/common/vp9_pred_common.h new file mode 100644 index 0000000000..ee59669359 --- /dev/null +++ b/media/libvpx/libvpx/vp9/common/vp9_pred_common.h @@ -0,0 +1,197 @@ +/* + * Copyright (c) 2012 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. + */ + +#ifndef VPX_VP9_COMMON_VP9_PRED_COMMON_H_ +#define VPX_VP9_COMMON_VP9_PRED_COMMON_H_ + +#include "vp9/common/vp9_blockd.h" +#include "vp9/common/vp9_onyxc_int.h" +#include "vpx_dsp/vpx_dsp_common.h" + +#ifdef __cplusplus +extern "C" { +#endif + +static INLINE int get_segment_id(const VP9_COMMON *cm, + const uint8_t *segment_ids, BLOCK_SIZE bsize, + int mi_row, int mi_col) { + const int mi_offset = mi_row * cm->mi_cols + mi_col; + const int bw = num_8x8_blocks_wide_lookup[bsize]; + const int bh = num_8x8_blocks_high_lookup[bsize]; + const int xmis = VPXMIN(cm->mi_cols - mi_col, bw); + const int ymis = VPXMIN(cm->mi_rows - mi_row, bh); + int x, y, segment_id = MAX_SEGMENTS; + + for (y = 0; y < ymis; ++y) + for (x = 0; x < xmis; ++x) + segment_id = + VPXMIN(segment_id, segment_ids[mi_offset + y * cm->mi_cols + x]); + + assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); + return segment_id; +} + +static INLINE int vp9_get_pred_context_seg_id(const MACROBLOCKD *xd) { + const MODE_INFO *const above_mi = xd->above_mi; + const MODE_INFO *const left_mi = xd->left_mi; + const int above_sip = (above_mi != NULL) ? above_mi->seg_id_predicted : 0; + const int left_sip = (left_mi != NULL) ? left_mi->seg_id_predicted : 0; + + return above_sip + left_sip; +} + +static INLINE vpx_prob vp9_get_pred_prob_seg_id(const struct segmentation *seg, + const MACROBLOCKD *xd) { + return seg->pred_probs[vp9_get_pred_context_seg_id(xd)]; +} + +static INLINE int vp9_get_skip_context(const MACROBLOCKD *xd) { + const MODE_INFO *const above_mi = xd->above_mi; + const MODE_INFO *const left_mi = xd->left_mi; + const int above_skip = (above_mi != NULL) ? above_mi->skip : 0; + const int left_skip = (left_mi != NULL) ? left_mi->skip : 0; + return above_skip + left_skip; +} + +static INLINE vpx_prob vp9_get_skip_prob(const VP9_COMMON *cm, + const MACROBLOCKD *xd) { + return cm->fc->skip_probs[vp9_get_skip_context(xd)]; +} + +// Returns a context number for the given MB prediction signal +static INLINE int get_pred_context_switchable_interp(const MACROBLOCKD *xd) { + // Note: + // The mode info data structure has a one element border above and to the + // left of the entries corresponding to real macroblocks. + // The prediction flags in these dummy entries are initialized to 0. + const MODE_INFO *const left_mi = xd->left_mi; + const int left_type = left_mi ? left_mi->interp_filter : SWITCHABLE_FILTERS; + const MODE_INFO *const above_mi = xd->above_mi; + const int above_type = + above_mi ? above_mi->interp_filter : SWITCHABLE_FILTERS; + + if (left_type == above_type) + return left_type; + else if (left_type == SWITCHABLE_FILTERS) + return above_type; + else if (above_type == SWITCHABLE_FILTERS) + return left_type; + else + return SWITCHABLE_FILTERS; +} + +// The mode info data structure has a one element border above and to the +// left of the entries corresponding to real macroblocks. +// The prediction flags in these dummy entries are initialized to 0. +// 0 - inter/inter, inter/--, --/inter, --/-- +// 1 - intra/inter, inter/intra +// 2 - intra/--, --/intra +// 3 - intra/intra +static INLINE int get_intra_inter_context(const MACROBLOCKD *xd) { + const MODE_INFO *const above_mi = xd->above_mi; + const MODE_INFO *const left_mi = xd->left_mi; + const int has_above = !!above_mi; + const int has_left = !!left_mi; + + if (has_above && has_left) { // both edges available + const int above_intra = !is_inter_block(above_mi); + const int left_intra = !is_inter_block(left_mi); + return left_intra && above_intra ? 3 : left_intra || above_intra; + } else if (has_above || has_left) { // one edge available + return 2 * !is_inter_block(has_above ? above_mi : left_mi); + } + return 0; +} + +static INLINE vpx_prob vp9_get_intra_inter_prob(const VP9_COMMON *cm, + const MACROBLOCKD *xd) { + return cm->fc->intra_inter_prob[get_intra_inter_context(xd)]; +} + +int vp9_get_reference_mode_context(const VP9_COMMON *cm, const MACROBLOCKD *xd); + +static INLINE vpx_prob vp9_get_reference_mode_prob(const VP9_COMMON *cm, + const MACROBLOCKD *xd) { + return cm->fc->comp_inter_prob[vp9_get_reference_mode_context(cm, xd)]; +} + +int vp9_get_pred_context_comp_ref_p(const VP9_COMMON *cm, + const MACROBLOCKD *xd); + +static INLINE vpx_prob vp9_get_pred_prob_comp_ref_p(const VP9_COMMON *cm, + const MACROBLOCKD *xd) { + const int pred_context = vp9_get_pred_context_comp_ref_p(cm, xd); + return cm->fc->comp_ref_prob[pred_context]; +} + +int vp9_get_pred_context_single_ref_p1(const MACROBLOCKD *xd); + +static INLINE vpx_prob vp9_get_pred_prob_single_ref_p1(const VP9_COMMON *cm, + const MACROBLOCKD *xd) { + return cm->fc->single_ref_prob[vp9_get_pred_context_single_ref_p1(xd)][0]; +} + +int vp9_get_pred_context_single_ref_p2(const MACROBLOCKD *xd); + +static INLINE vpx_prob vp9_get_pred_prob_single_ref_p2(const VP9_COMMON *cm, + const MACROBLOCKD *xd) { + return cm->fc->single_ref_prob[vp9_get_pred_context_single_ref_p2(xd)][1]; +} + +int vp9_compound_reference_allowed(const VP9_COMMON *cm); + +void vp9_setup_compound_reference_mode(VP9_COMMON *cm); + +// Returns a context number for the given MB prediction signal +// The mode info data structure has a one element border above and to the +// left of the entries corresponding to real blocks. +// The prediction flags in these dummy entries are initialized to 0. +static INLINE int get_tx_size_context(const MACROBLOCKD *xd) { + const int max_tx_size = max_txsize_lookup[xd->mi[0]->sb_type]; + const MODE_INFO *const above_mi = xd->above_mi; + const MODE_INFO *const left_mi = xd->left_mi; + const int has_above = !!above_mi; + const int has_left = !!left_mi; + int above_ctx = + (has_above && !above_mi->skip) ? (int)above_mi->tx_size : max_tx_size; + int left_ctx = + (has_left && !left_mi->skip) ? (int)left_mi->tx_size : max_tx_size; + if (!has_left) left_ctx = above_ctx; + + if (!has_above) above_ctx = left_ctx; + + return (above_ctx + left_ctx) > max_tx_size; +} + +static INLINE const vpx_prob *get_tx_probs(TX_SIZE max_tx_size, int ctx, + const struct tx_probs *tx_probs) { + switch (max_tx_size) { + case TX_8X8: return tx_probs->p8x8[ctx]; + case TX_16X16: return tx_probs->p16x16[ctx]; + case TX_32X32: return tx_probs->p32x32[ctx]; + default: assert(0 && "Invalid max_tx_size."); return NULL; + } +} + +static INLINE unsigned int *get_tx_counts(TX_SIZE max_tx_size, int ctx, + struct tx_counts *tx_counts) { + switch (max_tx_size) { + case TX_8X8: return tx_counts->p8x8[ctx]; + case TX_16X16: return tx_counts->p16x16[ctx]; + case TX_32X32: return tx_counts->p32x32[ctx]; + default: assert(0 && "Invalid max_tx_size."); return NULL; + } +} + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // VPX_VP9_COMMON_VP9_PRED_COMMON_H_ |