From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- media/ffvpx/libavcodec/hpeldsp.h | 107 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 media/ffvpx/libavcodec/hpeldsp.h (limited to 'media/ffvpx/libavcodec/hpeldsp.h') diff --git a/media/ffvpx/libavcodec/hpeldsp.h b/media/ffvpx/libavcodec/hpeldsp.h new file mode 100644 index 0000000000..45e81b10a5 --- /dev/null +++ b/media/ffvpx/libavcodec/hpeldsp.h @@ -0,0 +1,107 @@ +/* + * Half-pel DSP functions. + * Copyright (c) 2000, 2001, 2002 Fabrice Bellard + * Copyright (c) 2002-2004 Michael Niedermayer + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Half-pel DSP functions. + */ + +#ifndef AVCODEC_HPELDSP_H +#define AVCODEC_HPELDSP_H + +#include +#include + +/* add and put pixel (decoding) */ +// blocksizes for hpel_pixels_func are 8x4,8x8 16x8 16x16 +// h for hpel_pixels_func is limited to {width/2, width} but never larger +// than 16 and never smaller than 4 +typedef void (*op_pixels_func)(uint8_t *block /*align width (8 or 16)*/, + const uint8_t *pixels /*align 1*/, + ptrdiff_t line_size, int h); + +/** + * Half-pel DSP context. + */ +typedef struct HpelDSPContext { + /** + * Halfpel motion compensation with rounding (a+b+1)>>1. + * this is an array[4][4] of motion compensation functions for 4 + * horizontal blocksizes (8,16) and the 4 halfpel positions
+ * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ] + * @param block destination where the result is stored + * @param pixels source + * @param line_size number of bytes in a horizontal line of block + * @param h height + */ + op_pixels_func put_pixels_tab[4][4]; + + /** + * Halfpel motion compensation with rounding (a+b+1)>>1. + * This is an array[4][4] of motion compensation functions for 4 + * horizontal blocksizes (8,16) and the 4 halfpel positions
+ * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ] + * @param block destination into which the result is averaged (a+b+1)>>1 + * @param pixels source + * @param line_size number of bytes in a horizontal line of block + * @param h height + */ + op_pixels_func avg_pixels_tab[4][4]; + + /** + * Halfpel motion compensation with no rounding (a+b)>>1. + * this is an array[4][4] of motion compensation functions for 2 + * horizontal blocksizes (8,16) and the 4 halfpel positions
+ * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ] + * @param block destination where the result is stored + * @param pixels source + * @param line_size number of bytes in a horizontal line of block + * @param h height + * @note The size is kept at [4][4] to match the above pixel_tabs and avoid + * out of bounds reads in the motion estimation code. + */ + op_pixels_func put_no_rnd_pixels_tab[4][4]; + + /** + * Halfpel motion compensation with no rounding (a+b)>>1. + * this is an array[4] of motion compensation functions for 1 + * horizontal blocksize (16) and the 4 halfpel positions
+ * *pixels_tab[0][ xhalfpel + 2*yhalfpel ] + * @param block destination into which the result is averaged (a+b)>>1 + * @param pixels source + * @param line_size number of bytes in a horizontal line of block + * @param h height + */ + op_pixels_func avg_no_rnd_pixels_tab[4]; +} HpelDSPContext; + +void ff_hpeldsp_init(HpelDSPContext *c, int flags); + +void ff_hpeldsp_init_aarch64(HpelDSPContext *c, int flags); +void ff_hpeldsp_init_alpha(HpelDSPContext *c, int flags); +void ff_hpeldsp_init_arm(HpelDSPContext *c, int flags); +void ff_hpeldsp_init_ppc(HpelDSPContext *c, int flags); +void ff_hpeldsp_init_x86(HpelDSPContext *c, int flags); +void ff_hpeldsp_init_mips(HpelDSPContext *c, int flags); +void ff_hpeldsp_init_loongarch(HpelDSPContext *c, int flags); + +#endif /* AVCODEC_HPELDSP_H */ -- cgit v1.2.3