306 строки
8.7 KiB
C
306 строки
8.7 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_COMMON_VP9_BLOCKD_H_
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#define VP9_COMMON_VP9_BLOCKD_H_
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#include "./vpx_config.h"
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#include "vpx_dsp/vpx_dsp_common.h"
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#include "vpx_ports/mem.h"
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#include "vpx_scale/yv12config.h"
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#include "vp9/common/vp9_common_data.h"
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#include "vp9/common/vp9_entropy.h"
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#include "vp9/common/vp9_entropymode.h"
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#include "vp9/common/vp9_mv.h"
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#include "vp9/common/vp9_scale.h"
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#include "vp9/common/vp9_seg_common.h"
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#include "vp9/common/vp9_tile_common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_MB_PLANE 3
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typedef enum {
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KEY_FRAME = 0,
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INTER_FRAME = 1,
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FRAME_TYPES,
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} FRAME_TYPE;
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static INLINE int is_inter_mode(PREDICTION_MODE mode) {
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return mode >= NEARESTMV && mode <= NEWMV;
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}
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/* For keyframes, intra block modes are predicted by the (already decoded)
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modes for the Y blocks to the left and above us; for interframes, there
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is a single probability table. */
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typedef struct {
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PREDICTION_MODE as_mode;
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int_mv as_mv[2]; // first, second inter predictor motion vectors
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} b_mode_info;
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// Note that the rate-distortion optimization loop, bit-stream writer, and
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// decoder implementation modules critically rely on the defined entry values
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// specified herein. They should be refactored concurrently.
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#define NONE -1
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#define INTRA_FRAME 0
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#define LAST_FRAME 1
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#define GOLDEN_FRAME 2
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#define ALTREF_FRAME 3
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#define MAX_REF_FRAMES 4
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typedef int8_t MV_REFERENCE_FRAME;
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// This structure now relates to 8x8 block regions.
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typedef struct MODE_INFO {
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// Common for both INTER and INTRA blocks
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BLOCK_SIZE sb_type;
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PREDICTION_MODE mode;
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TX_SIZE tx_size;
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int8_t skip;
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int8_t segment_id;
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int8_t seg_id_predicted; // valid only when temporal_update is enabled
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// Only for INTRA blocks
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PREDICTION_MODE uv_mode;
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// Only for INTER blocks
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INTERP_FILTER interp_filter;
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MV_REFERENCE_FRAME ref_frame[2];
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// TODO(slavarnway): Delete and use bmi[3].as_mv[] instead.
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int_mv mv[2];
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b_mode_info bmi[4];
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} MODE_INFO;
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static INLINE PREDICTION_MODE get_y_mode(const MODE_INFO *mi, int block) {
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return mi->sb_type < BLOCK_8X8 ? mi->bmi[block].as_mode
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: mi->mode;
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}
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static INLINE int is_inter_block(const MODE_INFO *mi) {
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return mi->ref_frame[0] > INTRA_FRAME;
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}
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static INLINE int has_second_ref(const MODE_INFO *mi) {
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return mi->ref_frame[1] > INTRA_FRAME;
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}
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PREDICTION_MODE vp9_left_block_mode(const MODE_INFO *cur_mi,
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const MODE_INFO *left_mi, int b);
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PREDICTION_MODE vp9_above_block_mode(const MODE_INFO *cur_mi,
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const MODE_INFO *above_mi, int b);
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enum mv_precision {
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MV_PRECISION_Q3,
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MV_PRECISION_Q4
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};
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struct buf_2d {
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uint8_t *buf;
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int stride;
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};
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struct macroblockd_plane {
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tran_low_t *dqcoeff;
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int subsampling_x;
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int subsampling_y;
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struct buf_2d dst;
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struct buf_2d pre[2];
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ENTROPY_CONTEXT *above_context;
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ENTROPY_CONTEXT *left_context;
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int16_t seg_dequant[MAX_SEGMENTS][2];
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// number of 4x4s in current block
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uint16_t n4_w, n4_h;
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// log2 of n4_w, n4_h
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uint8_t n4_wl, n4_hl;
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// encoder
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const int16_t *dequant;
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};
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#define BLOCK_OFFSET(x, i) ((x) + (i) * 16)
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typedef struct RefBuffer {
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// TODO(dkovalev): idx is not really required and should be removed, now it
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// is used in vp9_onyxd_if.c
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int idx;
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YV12_BUFFER_CONFIG *buf;
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struct scale_factors sf;
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} RefBuffer;
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typedef struct macroblockd {
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struct macroblockd_plane plane[MAX_MB_PLANE];
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uint8_t bmode_blocks_wl;
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uint8_t bmode_blocks_hl;
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FRAME_COUNTS *counts;
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TileInfo tile;
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int mi_stride;
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MODE_INFO **mi;
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MODE_INFO *left_mi;
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MODE_INFO *above_mi;
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int up_available;
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int left_available;
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const vpx_prob (*partition_probs)[PARTITION_TYPES - 1];
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/* Distance of MB away from frame edges */
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int mb_to_left_edge;
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int mb_to_right_edge;
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int mb_to_top_edge;
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int mb_to_bottom_edge;
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FRAME_CONTEXT *fc;
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/* pointers to reference frames */
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RefBuffer *block_refs[2];
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/* pointer to current frame */
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const YV12_BUFFER_CONFIG *cur_buf;
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ENTROPY_CONTEXT *above_context[MAX_MB_PLANE];
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ENTROPY_CONTEXT left_context[MAX_MB_PLANE][16];
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PARTITION_CONTEXT *above_seg_context;
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PARTITION_CONTEXT left_seg_context[8];
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#if CONFIG_VP9_HIGHBITDEPTH
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/* Bit depth: 8, 10, 12 */
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int bd;
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#endif
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int lossless;
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int corrupted;
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struct vpx_internal_error_info *error_info;
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} MACROBLOCKD;
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static INLINE PLANE_TYPE get_plane_type(int plane) {
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return (PLANE_TYPE)(plane > 0);
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}
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static INLINE BLOCK_SIZE get_subsize(BLOCK_SIZE bsize,
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PARTITION_TYPE partition) {
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return subsize_lookup[partition][bsize];
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}
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extern const TX_TYPE intra_mode_to_tx_type_lookup[INTRA_MODES];
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static INLINE TX_TYPE get_tx_type(PLANE_TYPE plane_type,
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const MACROBLOCKD *xd) {
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const MODE_INFO *const mi = xd->mi[0];
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if (plane_type != PLANE_TYPE_Y || xd->lossless || is_inter_block(mi))
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return DCT_DCT;
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return intra_mode_to_tx_type_lookup[mi->mode];
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}
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static INLINE TX_TYPE get_tx_type_4x4(PLANE_TYPE plane_type,
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const MACROBLOCKD *xd, int ib) {
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const MODE_INFO *const mi = xd->mi[0];
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if (plane_type != PLANE_TYPE_Y || xd->lossless || is_inter_block(mi))
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return DCT_DCT;
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return intra_mode_to_tx_type_lookup[get_y_mode(mi, ib)];
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}
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void vp9_setup_block_planes(MACROBLOCKD *xd, int ss_x, int ss_y);
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static INLINE TX_SIZE get_uv_tx_size_impl(TX_SIZE y_tx_size, BLOCK_SIZE bsize,
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int xss, int yss) {
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if (bsize < BLOCK_8X8) {
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return TX_4X4;
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} else {
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const BLOCK_SIZE plane_bsize = ss_size_lookup[bsize][xss][yss];
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return VPXMIN(y_tx_size, max_txsize_lookup[plane_bsize]);
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}
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}
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static INLINE TX_SIZE get_uv_tx_size(const MODE_INFO *mi,
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const struct macroblockd_plane *pd) {
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return get_uv_tx_size_impl(mi->tx_size, mi->sb_type, pd->subsampling_x,
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pd->subsampling_y);
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}
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static INLINE BLOCK_SIZE get_plane_block_size(BLOCK_SIZE bsize,
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const struct macroblockd_plane *pd) {
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return ss_size_lookup[bsize][pd->subsampling_x][pd->subsampling_y];
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}
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static INLINE void reset_skip_context(MACROBLOCKD *xd, BLOCK_SIZE bsize) {
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int i;
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for (i = 0; i < MAX_MB_PLANE; i++) {
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struct macroblockd_plane *const pd = &xd->plane[i];
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const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, pd);
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memset(pd->above_context, 0,
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sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_wide_lookup[plane_bsize]);
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memset(pd->left_context, 0,
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sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_high_lookup[plane_bsize]);
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}
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}
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static INLINE const vpx_prob *get_y_mode_probs(const MODE_INFO *mi,
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const MODE_INFO *above_mi,
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const MODE_INFO *left_mi,
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int block) {
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const PREDICTION_MODE above = vp9_above_block_mode(mi, above_mi, block);
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const PREDICTION_MODE left = vp9_left_block_mode(mi, left_mi, block);
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return vp9_kf_y_mode_prob[above][left];
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}
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typedef void (*foreach_transformed_block_visitor)(int plane, int block,
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BLOCK_SIZE plane_bsize,
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TX_SIZE tx_size,
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void *arg);
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void vp9_foreach_transformed_block_in_plane(
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const MACROBLOCKD *const xd, BLOCK_SIZE bsize, int plane,
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foreach_transformed_block_visitor visit, void *arg);
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void vp9_foreach_transformed_block(
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const MACROBLOCKD* const xd, BLOCK_SIZE bsize,
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foreach_transformed_block_visitor visit, void *arg);
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static INLINE void txfrm_block_to_raster_xy(BLOCK_SIZE plane_bsize,
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TX_SIZE tx_size, int block,
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int *x, int *y) {
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const int bwl = b_width_log2_lookup[plane_bsize];
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const int tx_cols_log2 = bwl - tx_size;
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const int tx_cols = 1 << tx_cols_log2;
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const int raster_mb = block >> (tx_size << 1);
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*x = (raster_mb & (tx_cols - 1)) << tx_size;
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*y = (raster_mb >> tx_cols_log2) << tx_size;
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}
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void vp9_set_contexts(const MACROBLOCKD *xd, struct macroblockd_plane *pd,
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BLOCK_SIZE plane_bsize, TX_SIZE tx_size, int has_eob,
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int aoff, int loff);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_COMMON_VP9_BLOCKD_H_
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