ref: c743f8cdcf56ab8ca5ca90149b26a3c86e5b94b6
dir: /src/ipred.h/
/* * Copyright © 2018, VideoLAN and dav1d authors * Copyright © 2018, Two Orioles, LLC * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef __DAV1D_SRC_IPRED_H__ #define __DAV1D_SRC_IPRED_H__ #include "common/bitdepth.h" #include "src/levels.h" /* * Intra prediction. * - a is the angle (in degrees) for directional intra predictors. For other * modes, it is ignored; * - topleft is the same as the argument given to dav1d_prepare_intra_edges(), * see ipred_prepare.h for more detailed documentation. */ #define decl_angular_ipred_fn(name) \ void (name)(pixel *dst, ptrdiff_t stride, const pixel *topleft, int angle) typedef decl_angular_ipred_fn(*angular_ipred_fn); /* * Create a subsampled Y plane with the DC subtracted. * - w/h_pad is the edge of the width/height that extends outside the visible * portion of the frame in 4px units; * - ac has a stride of 16. */ #define decl_cfl_ac_fn(name) \ void (name)(int16_t *ac, const pixel *y, ptrdiff_t stride, \ int w_pad, int h_pad) typedef decl_cfl_ac_fn(*cfl_ac_fn); /* * dst[plane][x,y] = dc[plane] + alpha[plane] * ac[x,y] * - alphas contains two q3 scalars (one for each plane) in [-16,16] range; * - dc_pred[] is the first line of each plane's DC prediction, the second plane * starting at an offset of 16 * sizeof(pixel) bytes. */ #define decl_cfl_pred_fn(name) \ void (name)(pixel *u_dst, pixel *v_dst, ptrdiff_t stride, \ const int16_t *ac, const pixel *dc_pred, \ const int8_t *const alphas, const int height) typedef decl_cfl_pred_fn(*cfl_pred_fn); /* * dst[x,y] = pal[idx[x,y]] * - palette indices are [0-7] */ #define decl_pal_pred_fn(name) \ void (name)(pixel *dst, ptrdiff_t stride, const uint16_t *pal, \ const uint8_t *idx, const int w, const int h) typedef decl_pal_pred_fn(*pal_pred_fn); typedef struct Dav1dIntraPredDSPContext { angular_ipred_fn intra_pred[N_RECT_TX_SIZES][N_IMPL_INTRA_PRED_MODES]; // chroma-from-luma cfl_ac_fn cfl_ac[3 /* 420, 422, 444 */][N_RECT_TX_SIZES /* chroma tx size */]; cfl_pred_fn cfl_pred[4]; // palette pal_pred_fn pal_pred; } Dav1dIntraPredDSPContext; void dav1d_intra_pred_dsp_init_8bpc(Dav1dIntraPredDSPContext *c); void dav1d_intra_pred_dsp_init_10bpc(Dav1dIntraPredDSPContext *c); #endif /* __DAV1D_SRC_IPRED_H__ */