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Diffstat (limited to 'media/libaom/src/av1/common/convolve.h')
| -rw-r--r-- | media/libaom/src/av1/common/convolve.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/media/libaom/src/av1/common/convolve.h b/media/libaom/src/av1/common/convolve.h new file mode 100644 index 000000000..4109dd843 --- /dev/null +++ b/media/libaom/src/av1/common/convolve.h @@ -0,0 +1,125 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#ifndef AOM_AV1_COMMON_CONVOLVE_H_ +#define AOM_AV1_COMMON_CONVOLVE_H_ +#include "av1/common/filter.h" + +#ifdef __cplusplus +extern "C" { +#endif + +typedef uint16_t CONV_BUF_TYPE; +typedef struct ConvolveParams { + int do_average; + CONV_BUF_TYPE *dst; + int dst_stride; + int round_0; + int round_1; + int plane; + int is_compound; + int use_jnt_comp_avg; + int fwd_offset; + int bck_offset; +} ConvolveParams; + +#define ROUND0_BITS 3 +#define COMPOUND_ROUND1_BITS 7 +#define WIENER_ROUND0_BITS 3 + +#define WIENER_CLAMP_LIMIT(r0, bd) (1 << ((bd) + 1 + FILTER_BITS - r0)) + +typedef void (*aom_convolve_fn_t)(const uint8_t *src, int src_stride, + uint8_t *dst, int dst_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params); + +typedef void (*aom_highbd_convolve_fn_t)( + const uint16_t *src, int src_stride, uint16_t *dst, int dst_stride, int w, + int h, const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, const int subpel_x_q4, + const int subpel_y_q4, ConvolveParams *conv_params, int bd); + +struct AV1Common; +struct scale_factors; + +void av1_convolve_2d_facade(const uint8_t *src, int src_stride, uint8_t *dst, + int dst_stride, int w, int h, + InterpFilters interp_filters, const int subpel_x_q4, + int x_step_q4, const int subpel_y_q4, int y_step_q4, + int scaled, ConvolveParams *conv_params, + const struct scale_factors *sf, int is_intrabc); + +static INLINE ConvolveParams get_conv_params_no_round(int do_average, int plane, + CONV_BUF_TYPE *dst, + int dst_stride, + int is_compound, int bd) { + ConvolveParams conv_params; + conv_params.do_average = do_average; + assert(IMPLIES(do_average, is_compound)); + conv_params.is_compound = is_compound; + conv_params.round_0 = ROUND0_BITS; + conv_params.round_1 = is_compound ? COMPOUND_ROUND1_BITS + : 2 * FILTER_BITS - conv_params.round_0; + const int intbufrange = bd + FILTER_BITS - conv_params.round_0 + 2; + assert(IMPLIES(bd < 12, intbufrange <= 16)); + if (intbufrange > 16) { + conv_params.round_0 += intbufrange - 16; + if (!is_compound) conv_params.round_1 -= intbufrange - 16; + } + // TODO(yunqing): The following dst should only be valid while + // is_compound = 1; + conv_params.dst = dst; + conv_params.dst_stride = dst_stride; + conv_params.plane = plane; + return conv_params; +} + +static INLINE ConvolveParams get_conv_params(int do_average, int plane, + int bd) { + return get_conv_params_no_round(do_average, plane, NULL, 0, 0, bd); +} + +static INLINE ConvolveParams get_conv_params_wiener(int bd) { + ConvolveParams conv_params; + (void)bd; + conv_params.do_average = 0; + conv_params.is_compound = 0; + conv_params.round_0 = WIENER_ROUND0_BITS; + conv_params.round_1 = 2 * FILTER_BITS - conv_params.round_0; + const int intbufrange = bd + FILTER_BITS - conv_params.round_0 + 2; + assert(IMPLIES(bd < 12, intbufrange <= 16)); + if (intbufrange > 16) { + conv_params.round_0 += intbufrange - 16; + conv_params.round_1 -= intbufrange - 16; + } + conv_params.dst = NULL; + conv_params.dst_stride = 0; + conv_params.plane = 0; + return conv_params; +} + +void av1_highbd_convolve_2d_facade(const uint8_t *src8, int src_stride, + uint8_t *dst, int dst_stride, int w, int h, + InterpFilters interp_filters, + const int subpel_x_q4, int x_step_q4, + const int subpel_y_q4, int y_step_q4, + int scaled, ConvolveParams *conv_params, + const struct scale_factors *sf, + int is_intrabc, int bd); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AV1_COMMON_CONVOLVE_H_ |