gx
dcecd42de4
Snapshot FFmpeg n7.1 (release tag) с применённым patch'ем для cuframes input format. Используется как FFMPEG_REPO_OVERRIDE в NickM-27/FFmpeg-Builds fork для статической сборки patched binary под Frigate (Debian 12 / glibc 2.36). Apply changes: + libavformat/cuframesdec.c (новый — реализация демуксера) M libavformat/Makefile (CONFIG_CUFRAMES_DEMUXER target) M libavformat/allformats.c (extern declaration) M configure (--enable-libcuframes option + dep check) Patch source: https://git.goldix.org/gx/cuframes (filter/ffmpeg-7.1-cuframes-demuxer.patch) History сброшена (snapshot вместо fork) потому что upstream shallow clone не позволял push в gitea. Полная история FFmpeg — на github.com/FFmpeg/FFmpeg n7.1.
65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/*
|
|
* PNG image format
|
|
* Copyright (c) 2008 Loren Merrit <lorenm@u.washington.edu>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "libavutil/attributes.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/macros.h"
|
|
#include "png.h"
|
|
#include "pngdsp.h"
|
|
|
|
#if HAVE_FAST_64BIT
|
|
#define BITS 64
|
|
typedef uint64_t uint_native;
|
|
#else
|
|
#define BITS 32
|
|
typedef uint32_t uint_native;
|
|
#endif
|
|
#define RN AV_JOIN(AV_RN, BITS)
|
|
#define RNA AV_JOIN(AV_JOIN(AV_RN, BITS), A)
|
|
#define WN AV_JOIN(AV_WN, BITS)
|
|
|
|
// 0x7f7f7f7f or 0x7f7f7f7f7f7f7f7f or whatever, depending on the cpu's native arithmetic size
|
|
#define pb_7f (~(uint_native)0 / 255 * 0x7f)
|
|
#define pb_80 (~(uint_native)0 / 255 * 0x80)
|
|
|
|
static void add_bytes_l2_c(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w)
|
|
{
|
|
long i;
|
|
for (i = 0; i <= w - (int) sizeof(uint_native); i += sizeof(uint_native)) {
|
|
uint_native a = RNA(src1 + i);
|
|
uint_native b = RN (src2 + i);
|
|
WN(dst + i, ((a & pb_7f) + (b & pb_7f)) ^ ((a ^ b) & pb_80));
|
|
}
|
|
for (; i < w; i++)
|
|
dst[i] = src1[i] + src2[i];
|
|
}
|
|
|
|
av_cold void ff_pngdsp_init(PNGDSPContext *dsp)
|
|
{
|
|
dsp->add_bytes_l2 = add_bytes_l2_c;
|
|
dsp->add_paeth_prediction = ff_add_png_paeth_prediction;
|
|
|
|
#if ARCH_X86
|
|
ff_pngdsp_init_x86(dsp);
|
|
#endif
|
|
}
|