src/third_party/libvpx/vp9/common/vp9_pred_common.h - cobalt - Git at Google

 /*
  *  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_
	/*
	* 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_