diff options
Diffstat (limited to 'libvpx/vp9/common/vp9_scan.h')
| -rw-r--r-- | libvpx/vp9/common/vp9_scan.h | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/libvpx/vp9/common/vp9_scan.h b/libvpx/vp9/common/vp9_scan.h new file mode 100644 index 0000000..14a1a7e --- /dev/null +++ b/libvpx/vp9/common/vp9_scan.h @@ -0,0 +1,199 @@ +/* + * Copyright (c) 2013 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 VP9_COMMON_VP9_SCAN_H_ +#define VP9_COMMON_VP9_SCAN_H_ + +#include "vpx/vpx_integer.h" +#include "vpx_ports/mem.h" + +#include "vp9/common/vp9_enums.h" + +#define MAX_NEIGHBORS 2 + +extern DECLARE_ALIGNED(16, const int16_t, vp9_default_scan_4x4[16]); +extern DECLARE_ALIGNED(16, const int16_t, vp9_col_scan_4x4[16]); +extern DECLARE_ALIGNED(16, const int16_t, vp9_row_scan_4x4[16]); + +extern DECLARE_ALIGNED(16, const int16_t, vp9_default_scan_8x8[64]); +extern DECLARE_ALIGNED(16, const int16_t, vp9_col_scan_8x8[64]); +extern DECLARE_ALIGNED(16, const int16_t, vp9_row_scan_8x8[64]); + +extern DECLARE_ALIGNED(16, const int16_t, vp9_default_scan_16x16[256]); +extern DECLARE_ALIGNED(16, const int16_t, vp9_col_scan_16x16[256]); +extern DECLARE_ALIGNED(16, const int16_t, vp9_row_scan_16x16[256]); + +extern DECLARE_ALIGNED(16, const int16_t, vp9_default_scan_32x32[1024]); + +extern DECLARE_ALIGNED(16, int16_t, vp9_default_iscan_4x4[16]); +extern DECLARE_ALIGNED(16, int16_t, vp9_col_iscan_4x4[16]); +extern DECLARE_ALIGNED(16, int16_t, vp9_row_iscan_4x4[16]); + +extern DECLARE_ALIGNED(16, int16_t, vp9_default_iscan_8x8[64]); +extern DECLARE_ALIGNED(16, int16_t, vp9_col_iscan_8x8[64]); +extern DECLARE_ALIGNED(16, int16_t, vp9_row_iscan_8x8[64]); + +extern DECLARE_ALIGNED(16, int16_t, vp9_default_iscan_16x16[256]); +extern DECLARE_ALIGNED(16, int16_t, vp9_col_iscan_16x16[256]); +extern DECLARE_ALIGNED(16, int16_t, vp9_row_iscan_16x16[256]); + +extern DECLARE_ALIGNED(16, int16_t, vp9_default_iscan_32x32[1024]); + +extern DECLARE_ALIGNED(16, int16_t, + vp9_default_scan_4x4_neighbors[17 * MAX_NEIGHBORS]); +extern DECLARE_ALIGNED(16, int16_t, + vp9_col_scan_4x4_neighbors[17 * MAX_NEIGHBORS]); +extern DECLARE_ALIGNED(16, int16_t, + vp9_row_scan_4x4_neighbors[17 * MAX_NEIGHBORS]); +extern DECLARE_ALIGNED(16, int16_t, + vp9_col_scan_8x8_neighbors[65 * MAX_NEIGHBORS]); +extern DECLARE_ALIGNED(16, int16_t, + vp9_row_scan_8x8_neighbors[65 * MAX_NEIGHBORS]); +extern DECLARE_ALIGNED(16, int16_t, + vp9_default_scan_8x8_neighbors[65 * MAX_NEIGHBORS]); +extern DECLARE_ALIGNED(16, int16_t, + vp9_col_scan_16x16_neighbors[257 * MAX_NEIGHBORS]); +extern DECLARE_ALIGNED(16, int16_t, + vp9_row_scan_16x16_neighbors[257 * MAX_NEIGHBORS]); +extern DECLARE_ALIGNED(16, int16_t, + vp9_default_scan_16x16_neighbors[257 * MAX_NEIGHBORS]); +extern DECLARE_ALIGNED(16, int16_t, + vp9_default_scan_32x32_neighbors[1025 * MAX_NEIGHBORS]); + + +void vp9_init_neighbors(); + +static INLINE const int16_t* get_scan_4x4(TX_TYPE tx_type) { + switch (tx_type) { + case ADST_DCT: + return vp9_row_scan_4x4; + case DCT_ADST: + return vp9_col_scan_4x4; + default: + return vp9_default_scan_4x4; + } +} + +static INLINE void get_scan_nb_4x4(TX_TYPE tx_type, + const int16_t **scan, const int16_t **nb) { + switch (tx_type) { + case ADST_DCT: + *scan = vp9_row_scan_4x4; + *nb = vp9_row_scan_4x4_neighbors; + break; + case DCT_ADST: + *scan = vp9_col_scan_4x4; + *nb = vp9_col_scan_4x4_neighbors; + break; + default: + *scan = vp9_default_scan_4x4; + *nb = vp9_default_scan_4x4_neighbors; + break; + } +} + +static INLINE const int16_t* get_iscan_4x4(TX_TYPE tx_type) { + switch (tx_type) { + case ADST_DCT: + return vp9_row_iscan_4x4; + case DCT_ADST: + return vp9_col_iscan_4x4; + default: + return vp9_default_iscan_4x4; + } +} + +static INLINE const int16_t* get_scan_8x8(TX_TYPE tx_type) { + switch (tx_type) { + case ADST_DCT: + return vp9_row_scan_8x8; + case DCT_ADST: + return vp9_col_scan_8x8; + default: + return vp9_default_scan_8x8; + } +} + +static INLINE void get_scan_nb_8x8(TX_TYPE tx_type, + const int16_t **scan, const int16_t **nb) { + switch (tx_type) { + case ADST_DCT: + *scan = vp9_row_scan_8x8; + *nb = vp9_row_scan_8x8_neighbors; + break; + case DCT_ADST: + *scan = vp9_col_scan_8x8; + *nb = vp9_col_scan_8x8_neighbors; + break; + default: + *scan = vp9_default_scan_8x8; + *nb = vp9_default_scan_8x8_neighbors; + break; + } +} + +static INLINE const int16_t* get_iscan_8x8(TX_TYPE tx_type) { + switch (tx_type) { + case ADST_DCT: + return vp9_row_iscan_8x8; + case DCT_ADST: + return vp9_col_iscan_8x8; + default: + return vp9_default_iscan_8x8; + } +} + +static INLINE const int16_t* get_scan_16x16(TX_TYPE tx_type) { + switch (tx_type) { + case ADST_DCT: + return vp9_row_scan_16x16; + case DCT_ADST: + return vp9_col_scan_16x16; + default: + return vp9_default_scan_16x16; + } +} + +static INLINE void get_scan_nb_16x16(TX_TYPE tx_type, + const int16_t **scan, const int16_t **nb) { + switch (tx_type) { + case ADST_DCT: + *scan = vp9_row_scan_16x16; + *nb = vp9_row_scan_16x16_neighbors; + break; + case DCT_ADST: + *scan = vp9_col_scan_16x16; + *nb = vp9_col_scan_16x16_neighbors; + break; + default: + *scan = vp9_default_scan_16x16; + *nb = vp9_default_scan_16x16_neighbors; + break; + } +} + +static INLINE const int16_t* get_iscan_16x16(TX_TYPE tx_type) { + switch (tx_type) { + case ADST_DCT: + return vp9_row_iscan_16x16; + case DCT_ADST: + return vp9_col_iscan_16x16; + default: + return vp9_default_iscan_16x16; + } +} + +static INLINE int get_coef_context(const int16_t *neighbors, + const uint8_t *token_cache, int c) { + return (1 + token_cache[neighbors[MAX_NEIGHBORS * c + 0]] + + token_cache[neighbors[MAX_NEIGHBORS * c + 1]]) >> 1; +} + +#endif // VP9_COMMON_VP9_SCAN_H_ |