media/ffvpx/libavcodec/videodsp.h

   1 /*
   2  * Copyright (C) 2012 Ronald S. Bultje
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * Core video DSP helper functions
  24  */
  25
  26 #ifndef AVCODEC_VIDEODSP_H
  27 #define AVCODEC_VIDEODSP_H
  28
  29 #include <stddef.h>
  30 #include <stdint.h>
  31
  32 #define EMULATED_EDGE(depth) \
  33 void ff_emulated_edge_mc_ ## depth(uint8_t *dst, const uint8_t *src, \
  34                                    ptrdiff_t dst_stride, ptrdiff_t src_stride, \
  35                                    int block_w, int block_h,\
  36                                    int src_x, int src_y, int w, int h);
  37
  38 EMULATED_EDGE(8)
  39
  40 typedef struct VideoDSPContext {
  41     /**
  42      * Copy a rectangular area of samples to a temporary buffer and replicate
  43      * the border samples.
  44      *
  45      * @param dst destination buffer
  46      * @param dst_stride number of bytes between 2 vertically adjacent samples
  47      *                   in destination buffer
  48      * @param src source buffer
  49      * @param dst_linesize number of bytes between 2 vertically adjacent
  50      *                     samples in the destination buffer
  51      * @param src_linesize number of bytes between 2 vertically adjacent
  52      *                     samples in both the source buffer
  53      * @param block_w width of block
  54      * @param block_h height of block
  55      * @param src_x x coordinate of the top left sample of the block in the
  56      *                source buffer
  57      * @param src_y y coordinate of the top left sample of the block in the
  58      *                source buffer
  59      * @param w width of the source buffer
  60      * @param h height of the source buffer
  61      */
  62     void (*emulated_edge_mc)(uint8_t *dst, const uint8_t *src,
  63                              ptrdiff_t dst_linesize,
  64                              ptrdiff_t src_linesize,
  65                              int block_w, int block_h,
  66                              int src_x, int src_y, int w, int h);
  67
  68     /**
  69      * Prefetch memory into cache (if supported by hardware).
  70      *
  71      * @param buf    pointer to buffer to prefetch memory from
  72      * @param stride distance between two lines of buf (in bytes)
  73      * @param h      number of lines to prefetch
  74      */
  75     void (*prefetch)(const uint8_t *buf, ptrdiff_t stride, int h);
  76 } VideoDSPContext;
  77
  78 void ff_videodsp_init(VideoDSPContext *ctx, int bpc);
  79
  80 /* for internal use only (i.e. called by ff_videodsp_init() */
  81 void ff_videodsp_init_aarch64(VideoDSPContext *ctx, int bpc);
  82 void ff_videodsp_init_arm(VideoDSPContext *ctx, int bpc);
  83 void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc);
  84 void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc);
  85 void ff_videodsp_init_mips(VideoDSPContext *ctx, int bpc);
  86 void ff_videodsp_init_loongarch(VideoDSPContext *ctx, int bpc);
  87
  88 #endif /* AVCODEC_VIDEODSP_H */