/* * 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 <stddef.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 width, int height, int angle, int max_width, int max_height \            HIGHBD_DECL_SUFFIX)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, int cw, int ch)typedef decl_cfl_ac_fn(*cfl_ac_fn); /* * dst[x,y] += alpha * ac[x,y] * - alpha contains a q3 scalar in [-16,16] range; */#define decl_cfl_pred_fn(name) \void (name)(pixel *dst, ptrdiff_t stride, const pixel *topleft, \            int width, int height, const int16_t *ac, int alpha \            HIGHBD_DECL_SUFFIX)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, int w, int h)typedef decl_pal_pred_fn(*pal_pred_fn); typedef struct Dav1dIntraPredDSPContext {    angular_ipred_fn intra_pred[N_IMPL_INTRA_PRED_MODES];     // chroma-from-luma    cfl_ac_fn cfl_ac[3 /* 420, 422, 444 */];    cfl_pred_fn cfl_pred[DC_128_PRED + 1];     // palette    pal_pred_fn pal_pred;} Dav1dIntraPredDSPContext; #pragma incomplete Dav1dIntraPredDSPContext bitfn_decls(void dav1d_intra_pred_dsp_init, Dav1dIntraPredDSPContext *c);bitfn_decls(void dav1d_intra_pred_dsp_init_arm, Dav1dIntraPredDSPContext *c);bitfn_decls(void dav1d_intra_pred_dsp_init_x86, Dav1dIntraPredDSPContext *c); #endif /* DAV1D_SRC_IPRED_H */