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https://github.com/FFmpeg/FFmpeg.git
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40e6575aa3
This is more spec-compliant because it does not rely on dead-code elimination by the compiler. Especially MSVC has problems with this, as can be seen in https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/296373.html or https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/297022.html This commit does not eliminate every instance where we rely on dead code elimination: It only tackles branching to the initialization of arch-specific dsp code, not e.g. all uses of CONFIG_ and HAVE_ checks. But maybe it is already enough to compile FFmpeg with MSVC with whole-programm-optimizations enabled (if one does not disable too many components). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
374 lines
24 KiB
C
374 lines
24 KiB
C
/*
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* Half-pel DSP functions.
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* Copyright (c) 2000, 2001 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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*
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* gmc & q-pel & 32/64 bit based MC by Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Half-pel DSP functions.
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*/
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#include "libavutil/attributes.h"
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#include "libavutil/intreadwrite.h"
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#include "hpeldsp.h"
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#define BIT_DEPTH 8
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#include "hpel_template.c"
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#include "pel_template.c"
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#define PIXOP2(OPNAME, OP) \
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static inline void OPNAME ## _no_rnd_pixels8_l2_8(uint8_t *dst, \
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const uint8_t *src1, \
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const uint8_t *src2, \
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int dst_stride, \
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int src_stride1, \
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int src_stride2, \
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int h) \
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{ \
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int i; \
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\
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for (i = 0; i < h; i++) { \
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uint32_t a, b; \
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a = AV_RN32(&src1[i * src_stride1]); \
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b = AV_RN32(&src2[i * src_stride2]); \
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OP(*((uint32_t *) &dst[i * dst_stride]), \
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no_rnd_avg32(a, b)); \
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a = AV_RN32(&src1[i * src_stride1 + 4]); \
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b = AV_RN32(&src2[i * src_stride2 + 4]); \
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OP(*((uint32_t *) &dst[i * dst_stride + 4]), \
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no_rnd_avg32(a, b)); \
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} \
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} \
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\
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static inline void OPNAME ## _no_rnd_pixels8_x2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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OPNAME ## _no_rnd_pixels8_l2_8(block, pixels, pixels + 1, \
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line_size, line_size, line_size, h); \
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} \
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\
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static inline void OPNAME ## _pixels8_x2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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OPNAME ## _pixels8_l2_8(block, pixels, pixels + 1, \
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line_size, line_size, line_size, h); \
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} \
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\
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static inline void OPNAME ## _no_rnd_pixels8_y2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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OPNAME ## _no_rnd_pixels8_l2_8(block, pixels, pixels + line_size, \
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line_size, line_size, line_size, h); \
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} \
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\
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static inline void OPNAME ## _pixels8_y2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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OPNAME ## _pixels8_l2_8(block, pixels, pixels + line_size, \
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line_size, line_size, line_size, h); \
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} \
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\
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static inline void OPNAME ## _pixels4_x2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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OPNAME ## _pixels4_l2_8(block, pixels, pixels + 1, \
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line_size, line_size, line_size, h); \
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} \
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\
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static inline void OPNAME ## _pixels4_y2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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OPNAME ## _pixels4_l2_8(block, pixels, pixels + line_size, \
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line_size, line_size, line_size, h); \
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} \
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\
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static inline void OPNAME ## _pixels2_x2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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OPNAME ## _pixels2_l2_8(block, pixels, pixels + 1, \
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line_size, line_size, line_size, h); \
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} \
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\
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static inline void OPNAME ## _pixels2_y2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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OPNAME ## _pixels2_l2_8(block, pixels, pixels + line_size, \
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line_size, line_size, line_size, h); \
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} \
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\
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static inline void OPNAME ## _pixels2_xy2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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int i, a1, b1; \
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int a0 = pixels[0]; \
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int b0 = pixels[1] + 2; \
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\
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a0 += b0; \
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b0 += pixels[2]; \
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pixels += line_size; \
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for (i = 0; i < h; i += 2) { \
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a1 = pixels[0]; \
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b1 = pixels[1]; \
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a1 += b1; \
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b1 += pixels[2]; \
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\
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block[0] = (a1 + a0) >> 2; /* FIXME non put */ \
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block[1] = (b1 + b0) >> 2; \
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\
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pixels += line_size; \
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block += line_size; \
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\
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a0 = pixels[0]; \
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b0 = pixels[1] + 2; \
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a0 += b0; \
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b0 += pixels[2]; \
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\
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block[0] = (a1 + a0) >> 2; \
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block[1] = (b1 + b0) >> 2; \
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pixels += line_size; \
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block += line_size; \
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} \
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} \
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\
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static inline void OPNAME ## _pixels4_xy2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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/* FIXME HIGH BIT DEPTH */ \
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int i; \
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const uint32_t a = AV_RN32(pixels); \
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const uint32_t b = AV_RN32(pixels + 1); \
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uint32_t l0 = (a & 0x03030303UL) + \
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(b & 0x03030303UL) + \
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0x02020202UL; \
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uint32_t h0 = ((a & 0xFCFCFCFCUL) >> 2) + \
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((b & 0xFCFCFCFCUL) >> 2); \
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uint32_t l1, h1; \
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\
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pixels += line_size; \
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for (i = 0; i < h; i += 2) { \
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uint32_t a = AV_RN32(pixels); \
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uint32_t b = AV_RN32(pixels + 1); \
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l1 = (a & 0x03030303UL) + \
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(b & 0x03030303UL); \
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h1 = ((a & 0xFCFCFCFCUL) >> 2) + \
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((b & 0xFCFCFCFCUL) >> 2); \
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OP(*((uint32_t *) block), h0 + h1 + \
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(((l0 + l1) >> 2) & 0x0F0F0F0FUL)); \
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pixels += line_size; \
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block += line_size; \
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a = AV_RN32(pixels); \
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b = AV_RN32(pixels + 1); \
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l0 = (a & 0x03030303UL) + \
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(b & 0x03030303UL) + \
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0x02020202UL; \
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h0 = ((a & 0xFCFCFCFCUL) >> 2) + \
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((b & 0xFCFCFCFCUL) >> 2); \
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OP(*((uint32_t *) block), h0 + h1 + \
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(((l0 + l1) >> 2) & 0x0F0F0F0FUL)); \
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pixels += line_size; \
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block += line_size; \
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} \
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} \
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\
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static inline void OPNAME ## _pixels8_xy2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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/* FIXME HIGH BIT DEPTH */ \
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int j; \
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\
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for (j = 0; j < 2; j++) { \
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int i; \
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const uint32_t a = AV_RN32(pixels); \
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const uint32_t b = AV_RN32(pixels + 1); \
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uint32_t l0 = (a & 0x03030303UL) + \
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(b & 0x03030303UL) + \
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0x02020202UL; \
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uint32_t h0 = ((a & 0xFCFCFCFCUL) >> 2) + \
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((b & 0xFCFCFCFCUL) >> 2); \
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uint32_t l1, h1; \
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\
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pixels += line_size; \
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for (i = 0; i < h; i += 2) { \
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uint32_t a = AV_RN32(pixels); \
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uint32_t b = AV_RN32(pixels + 1); \
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l1 = (a & 0x03030303UL) + \
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(b & 0x03030303UL); \
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h1 = ((a & 0xFCFCFCFCUL) >> 2) + \
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((b & 0xFCFCFCFCUL) >> 2); \
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OP(*((uint32_t *) block), h0 + h1 + \
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(((l0 + l1) >> 2) & 0x0F0F0F0FUL)); \
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pixels += line_size; \
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block += line_size; \
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a = AV_RN32(pixels); \
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b = AV_RN32(pixels + 1); \
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l0 = (a & 0x03030303UL) + \
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(b & 0x03030303UL) + \
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0x02020202UL; \
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h0 = ((a & 0xFCFCFCFCUL) >> 2) + \
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((b & 0xFCFCFCFCUL) >> 2); \
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OP(*((uint32_t *) block), h0 + h1 + \
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(((l0 + l1) >> 2) & 0x0F0F0F0FUL)); \
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pixels += line_size; \
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block += line_size; \
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} \
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pixels += 4 - line_size * (h + 1); \
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block += 4 - line_size * h; \
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} \
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} \
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\
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static inline void OPNAME ## _no_rnd_pixels8_xy2_8_c(uint8_t *block, \
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const uint8_t *pixels, \
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ptrdiff_t line_size, \
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int h) \
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{ \
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/* FIXME HIGH BIT DEPTH */ \
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int j; \
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\
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for (j = 0; j < 2; j++) { \
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int i; \
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const uint32_t a = AV_RN32(pixels); \
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const uint32_t b = AV_RN32(pixels + 1); \
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uint32_t l0 = (a & 0x03030303UL) + \
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(b & 0x03030303UL) + \
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0x01010101UL; \
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uint32_t h0 = ((a & 0xFCFCFCFCUL) >> 2) + \
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((b & 0xFCFCFCFCUL) >> 2); \
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uint32_t l1, h1; \
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\
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pixels += line_size; \
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for (i = 0; i < h; i += 2) { \
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uint32_t a = AV_RN32(pixels); \
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uint32_t b = AV_RN32(pixels + 1); \
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l1 = (a & 0x03030303UL) + \
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(b & 0x03030303UL); \
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h1 = ((a & 0xFCFCFCFCUL) >> 2) + \
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((b & 0xFCFCFCFCUL) >> 2); \
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OP(*((uint32_t *) block), h0 + h1 + \
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(((l0 + l1) >> 2) & 0x0F0F0F0FUL)); \
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pixels += line_size; \
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block += line_size; \
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a = AV_RN32(pixels); \
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b = AV_RN32(pixels + 1); \
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l0 = (a & 0x03030303UL) + \
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(b & 0x03030303UL) + \
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0x01010101UL; \
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h0 = ((a & 0xFCFCFCFCUL) >> 2) + \
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((b & 0xFCFCFCFCUL) >> 2); \
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OP(*((uint32_t *) block), h0 + h1 + \
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(((l0 + l1) >> 2) & 0x0F0F0F0FUL)); \
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pixels += line_size; \
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block += line_size; \
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} \
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pixels += 4 - line_size * (h + 1); \
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block += 4 - line_size * h; \
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} \
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} \
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\
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CALL_2X_PIXELS(OPNAME ## _pixels16_x2_8_c, \
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OPNAME ## _pixels8_x2_8_c, \
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8) \
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CALL_2X_PIXELS(OPNAME ## _pixels16_y2_8_c, \
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OPNAME ## _pixels8_y2_8_c, \
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8) \
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CALL_2X_PIXELS(OPNAME ## _pixels16_xy2_8_c, \
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OPNAME ## _pixels8_xy2_8_c, \
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8) \
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CALL_2X_PIXELS(OPNAME ## _no_rnd_pixels16_8_c, \
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OPNAME ## _pixels8_8_c, \
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8) \
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CALL_2X_PIXELS(OPNAME ## _no_rnd_pixels16_x2_8_c, \
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OPNAME ## _no_rnd_pixels8_x2_8_c, \
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8) \
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CALL_2X_PIXELS(OPNAME ## _no_rnd_pixels16_y2_8_c, \
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OPNAME ## _no_rnd_pixels8_y2_8_c, \
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8) \
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CALL_2X_PIXELS(OPNAME ## _no_rnd_pixels16_xy2_8_c, \
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OPNAME ## _no_rnd_pixels8_xy2_8_c, \
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8) \
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#define op_avg(a, b) a = rnd_avg32(a, b)
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#define op_put(a, b) a = b
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#define put_no_rnd_pixels8_8_c put_pixels8_8_c
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PIXOP2(avg, op_avg)
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PIXOP2(put, op_put)
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#undef op_avg
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#undef op_put
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av_cold void ff_hpeldsp_init(HpelDSPContext *c, int flags)
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{
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#define hpel_funcs(prefix, idx, num) \
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c->prefix ## _pixels_tab idx [0] = prefix ## _pixels ## num ## _8_c; \
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c->prefix ## _pixels_tab idx [1] = prefix ## _pixels ## num ## _x2_8_c; \
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c->prefix ## _pixels_tab idx [2] = prefix ## _pixels ## num ## _y2_8_c; \
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c->prefix ## _pixels_tab idx [3] = prefix ## _pixels ## num ## _xy2_8_c
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hpel_funcs(put, [0], 16);
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hpel_funcs(put, [1], 8);
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hpel_funcs(put, [2], 4);
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hpel_funcs(put, [3], 2);
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hpel_funcs(put_no_rnd, [0], 16);
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hpel_funcs(put_no_rnd, [1], 8);
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hpel_funcs(avg, [0], 16);
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hpel_funcs(avg, [1], 8);
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hpel_funcs(avg, [2], 4);
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hpel_funcs(avg, [3], 2);
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hpel_funcs(avg_no_rnd,, 16);
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#if ARCH_AARCH64
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ff_hpeldsp_init_aarch64(c, flags);
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#elif ARCH_ALPHA
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ff_hpeldsp_init_alpha(c, flags);
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#elif ARCH_ARM
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ff_hpeldsp_init_arm(c, flags);
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#elif ARCH_PPC
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ff_hpeldsp_init_ppc(c, flags);
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#elif ARCH_X86
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ff_hpeldsp_init_x86(c, flags);
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#elif ARCH_MIPS
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ff_hpeldsp_init_mips(c, flags);
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#elif ARCH_LOONGARCH64
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ff_hpeldsp_init_loongarch(c, flags);
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#endif
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}
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