mirror of
https://github.com/libretro/bsnes-libretro.git
synced 2024-11-23 08:59:40 +00:00
0955295475
byuu says: Changelog: - nall/vector rewritten from scratch - higan/audio uses nall/vector instead of raw pointers - higan/sfc/coprocessor/sdd1 updated with new research information - ruby/video/glx and ruby/video/glx2: fuck salt glXSwapIntervalEXT! The big change here is definitely nall/vector. The Windows, OS X and Qt ports won't compile until you change some first/last strings to left/right, but GTK will compile. I'd be really grateful if anyone could stress-test nall/vector. Pretty much everything I do relies on this class. If we introduce a bug, the worst case scenario is my entire SFC game dump database gets corrupted, or the byuu.org server gets compromised. So it's really critical that we test the hell out of this right now. The S-DD1 changes mean you need to update your installation of icarus again. Also, even though the Lunar FMV never really worked on the accuracy core anyway (it didn't initialize the PPU properly), it really won't work now that we emulate the hard-limit of 16MiB for S-DD1 games.
114 lines
2.9 KiB
C++
114 lines
2.9 KiB
C++
#pragma once
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#include <nall/intrinsics.hpp>
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#include <nall/stdint.hpp>
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#include <nall/string.hpp>
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#if !defined(API_POSIX)
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#error "nall/serial: unsupported system"
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#endif
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <termios.h>
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#include <unistd.h>
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namespace nall {
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struct serial {
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~serial() {
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close();
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}
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auto readable() -> bool {
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if(!opened) return false;
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fd_set fdset;
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FD_ZERO(&fdset);
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FD_SET(port, &fdset);
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timeval timeout;
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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int result = select(FD_SETSIZE, &fdset, nullptr, nullptr, &timeout);
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if(result < 1) return false;
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return FD_ISSET(port, &fdset);
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}
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//-1 on error, otherwise return bytes read
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auto read(uint8_t* data, uint length) -> int {
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if(!opened) return -1;
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return ::read(port, (void*)data, length);
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}
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auto writable() -> bool {
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if(!opened) return false;
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fd_set fdset;
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FD_ZERO(&fdset);
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FD_SET(port, &fdset);
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timeval timeout;
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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int result = select(FD_SETSIZE, nullptr, &fdset, nullptr, &timeout);
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if(result < 1) return false;
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return FD_ISSET(port, &fdset);
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}
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//-1 on error, otherwise return bytes written
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auto write(const uint8_t* data, uint length) -> int {
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if(!opened) return -1;
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return ::write(port, (void*)data, length);
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}
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//rate==0: use flow control (synchronous mode)
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//rate!=0: baud-rate (asynchronous mode)
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auto open(string device, uint rate = 0) -> bool {
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close();
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if(!device) device = "/dev/ttyU0"; //note: default device name is for FreeBSD 10+
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port = ::open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK);
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if(port == -1) return false;
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if(ioctl(port, TIOCEXCL) == -1) { close(); return false; }
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if(fcntl(port, F_SETFL, 0) == -1) { close(); return false; }
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if(tcgetattr(port, &original_attr) == -1) { close(); return false; }
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termios attr = original_attr;
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cfmakeraw(&attr);
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cfsetspeed(&attr, rate ? rate : 57600); //rate value has no effect in synchronous mode
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attr.c_lflag &=~ (ECHO | ECHONL | ISIG | ICANON | IEXTEN);
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attr.c_iflag &=~ (BRKINT | PARMRK | INPCK | ISTRIP | INLCR | IGNCR | ICRNL | IXON | IXOFF | IXANY);
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attr.c_iflag |= (IGNBRK | IGNPAR);
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attr.c_oflag &=~ (OPOST);
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attr.c_cflag &=~ (CSIZE | CSTOPB | PARENB | CLOCAL);
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attr.c_cflag |= (CS8 | CREAD);
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if(rate) {
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attr.c_cflag &= ~CRTSCTS;
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} else {
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attr.c_cflag |= CRTSCTS;
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}
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attr.c_cc[VTIME] = attr.c_cc[VMIN] = 0;
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if(tcsetattr(port, TCSANOW, &attr) == -1) { close(); return false; }
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return opened = true;
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}
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auto close() -> void {
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if(port != -1) {
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tcdrain(port);
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if(opened) {
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tcsetattr(port, TCSANOW, &original_attr);
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opened = false;
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}
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::close(port);
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port = -1;
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}
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}
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private:
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int port = -1;
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bool opened = false;
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termios original_attr;
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};
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}
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