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Get address sanitizer mostly working
This commit is contained in:
Justine Tunney
parent
1f1f3cd477
commit
7327c345f9
149 changed files with 3777 additions and 3457 deletions
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ 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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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "dsp/mpeg/mpeg.h"
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#include "dsp/mpeg/ycbcrio.h"
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#include "libc/bits/bits.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/stat.h"
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#include "libc/log/check.h"
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#include "libc/macros.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/map.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/prot.h"
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static void CheckPlmFrame(const struct plm_frame_t *frame) {
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CHECK_NE(0, frame->width);
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CHECK_NE(0, frame->height);
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CHECK_GE(frame->y.width, frame->width);
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CHECK_GE(frame->y.height, frame->height);
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CHECK_EQ(frame->cr.width, frame->cb.width);
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CHECK_EQ(frame->cr.height, frame->cb.height);
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CHECK_EQ(frame->y.width, frame->cr.width * 2);
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CHECK_EQ(frame->y.height, frame->cr.height * 2);
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CHECK_NOTNULL(frame->y.data);
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CHECK_NOTNULL(frame->cr.data);
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CHECK_NOTNULL(frame->cb.data);
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}
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static size_t GetHeaderBytes(const struct plm_frame_t *frame) {
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return MAX(sizeof(struct Ycbcrio), ROUNDUP(frame->y.width, 16));
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}
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static size_t GetPlaneBytes(const struct plm_plane_t *plane) {
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/*
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* planes must be 16-byte aligned, but due to their hugeness, and the
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* recommendation of intel's 6,000 page manual, it makes sense to have
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* planes on isolated 64kb frames for multiprocessing.
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*/
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return ROUNDUP(ROUNDUP(plane->height, 16) * ROUNDUP(plane->width, 16),
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FRAMESIZE);
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}
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static size_t CalcMapBytes(const struct plm_frame_t *frame) {
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return ROUNDUP(GetHeaderBytes(frame) + GetPlaneBytes(&frame->y) +
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GetPlaneBytes(&frame->cb) + GetPlaneBytes(&frame->cb),
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FRAMESIZE);
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}
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static void FixupPointers(struct Ycbcrio *map) {
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map->frame.y.data = (unsigned char *)map + GetHeaderBytes(&map->frame);
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map->frame.cr.data = map->frame.y.data + GetPlaneBytes(&map->frame.y);
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map->frame.cb.data = map->frame.cr.data + GetPlaneBytes(&map->frame.cr);
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}
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static struct Ycbcrio *YcbcrioOpenNew(const char *path,
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const struct plm_frame_t *frame) {
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int fd;
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size_t size;
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struct stat st;
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struct Ycbcrio *map;
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CheckPlmFrame(frame);
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size = CalcMapBytes(frame);
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CHECK_NE(-1, (fd = open(path, O_CREAT | O_RDWR, 0644)));
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CHECK_NE(-1, fstat(fd, &st));
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if (st.st_size < size) {
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CHECK_NE(-1, ftruncate(fd, size));
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}
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CHECK_NE(MAP_FAILED,
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(map = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)));
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map->magic = YCBCRIO_MAGIC;
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map->fd = fd;
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map->size = size;
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memcpy(&map->frame, frame, sizeof(map->frame));
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FixupPointers(map);
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memcpy(&map->frame.y.data, frame->y.data, GetPlaneBytes(&frame->y));
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memcpy(&map->frame.cb.data, frame->cb.data, GetPlaneBytes(&frame->cb));
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memcpy(&map->frame.cr.data, frame->cr.data, GetPlaneBytes(&frame->cr));
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return map;
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}
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static struct Ycbcrio *YcbcrioOpenExisting(const char *path) {
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int fd;
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struct stat st;
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struct Ycbcrio *map;
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CHECK_NE(-1, (fd = open(path, O_RDWR)));
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CHECK_NE(-1, fstat(fd, &st));
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CHECK_NE(MAP_FAILED, (map = mmap(NULL, st.st_size, PROT_READ | PROT_WRITE,
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MAP_SHARED, fd, 0)));
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CHECK_EQ(YCBCRIO_MAGIC, map->magic);
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CHECK_GE(st.st_size, CalcMapBytes(&map->frame));
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FixupPointers(map);
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map->fd = fd;
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map->size = st.st_size;
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return map;
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}
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/**
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* Opens shareable persistable MPEG video frame memory.
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*
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* @param path is a file name
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* @param frame if NULL means open existing file, otherwise copies new
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* @param points to pointer returned by YcbcrioOpen() which is cleared
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* @return memory mapping needing YcbcrioClose()
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*/
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struct Ycbcrio *YcbcrioOpen(const char *path, const struct plm_frame_t *frame) {
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if (frame) {
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return YcbcrioOpenNew(path, frame);
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} else {
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return YcbcrioOpenExisting(path);
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}
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}
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/**
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* Closes mapped video frame file.
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*
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* @param points to pointer returned by YcbcrioOpen() which is cleared
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*/
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void YcbcrioClose(struct Ycbcrio **map) {
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CHECK_NE(-1, close_s(&(*map)->fd));
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CHECK_NE(-1, munmap_s(map, (*map)->size));
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}
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@ -1,27 +0,0 @@
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#ifndef COSMOPOLITAN_DSP_MPEG_YCBCRIO_H_
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#define COSMOPOLITAN_DSP_MPEG_YCBCRIO_H_
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#include "dsp/mpeg/mpeg.h"
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#include "libc/bits/bswap.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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#define YCBCRIO_MAGIC bswap_32(0xBCCBCCBCu)
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/**
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* Mappable persistable MPEG-2 video frame in Y-Cr-Cb colorspace.
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*/
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struct Ycbcrio {
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uint32_t magic;
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int32_t fd;
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uint64_t size;
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plm_frame_t frame;
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};
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struct Ycbcrio *YcbcrioOpen(const char *, const struct plm_frame_t *)
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paramsnonnull((1)) vallocesque returnsnonnull;
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void YcbcrioClose(struct Ycbcrio **) paramsnonnull();
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_DSP_MPEG_YCBCRIO_H_ */
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