4b57a8b356
Framework for alternate transforms for inter 32x32 and larger based on dwt-dct hybrid is implemented. Further experiments are to be condcuted with different variations of hybrid dct/dwt or plain dwt, as well as super-resolution mode. Change-Id: I9a2bf49ba317e7668002cf1499211d7da6fa14ad
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
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* Copyright (c) 2013 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_SCAN_H_
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#define VP9_COMMON_VP9_SCAN_H_
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#include "vpx/vpx_integer.h"
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#include "vpx_ports/mem.h"
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#include "vp9/common/vp9_enums.h"
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#include "vp9/common/vp9_blockd.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_NEIGHBORS 2
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typedef struct {
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const int16_t *scan;
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const int16_t *iscan;
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const int16_t *neighbors;
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} scan_order;
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extern const scan_order vp9_default_scan_orders[TX_SIZES];
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extern const scan_order vp9_intra_scan_orders[TX_SIZES][TX_TYPES];
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#if CONFIG_EXT_TX
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extern const scan_order vp9_inter_scan_orders[TX_SIZES][TOTAL_TX_TYPES];
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#endif // CONFIG_EXT_TX
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#if CONFIG_TX_SKIP
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// pixel domain default scan orders
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extern const scan_order vp9_default_scan_orders_pxd[TX_SIZES];
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extern int16_t vp9_default_scan_pxd_4x4[16];
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extern int16_t vp9_default_scan_pxd_8x8[64];
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extern int16_t vp9_default_scan_pxd_16x16[256];
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extern int16_t vp9_default_scan_pxd_32x32[1024];
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extern int16_t vp9_default_iscan_pxd_4x4[16];
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extern int16_t vp9_default_iscan_pxd_8x8[64];
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extern int16_t vp9_default_iscan_pxd_16x16[256];
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extern int16_t vp9_default_iscan_pxd_32x32[1024];
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extern int16_t vp9_default_scan_pxd_4x4_neighbors[17 * MAX_NEIGHBORS];
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extern int16_t vp9_default_scan_pxd_8x8_neighbors[65 * MAX_NEIGHBORS];
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extern int16_t vp9_default_scan_pxd_16x16_neighbors[257 * MAX_NEIGHBORS];
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extern int16_t vp9_default_scan_pxd_32x32_neighbors[1025 * MAX_NEIGHBORS];
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#if CONFIG_TX64X64
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extern int16_t vp9_default_scan_pxd_64x64[4096];
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extern int16_t vp9_default_iscan_pxd_64x64[4096];
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extern int16_t vp9_default_scan_pxd_64x64_neighbors[4097 * MAX_NEIGHBORS];
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#endif // CONFIG_TX64X64
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#endif // CONFIG_TX_SKIP
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static INLINE int get_coef_context(const int16_t *neighbors,
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const uint8_t *token_cache, int c) {
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return (1 + token_cache[neighbors[MAX_NEIGHBORS * c + 0]] +
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token_cache[neighbors[MAX_NEIGHBORS * c + 1]]) >> 1;
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}
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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_SCAN_H_
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