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https://github.com/VDR4Arch/vdr.git
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501 lines
12 KiB
C
501 lines
12 KiB
C
/*
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* remote.c: Interface to the Remote Control Unit
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* Ported to LIRC by Carsten Koch <Carsten.Koch@icem.de> 2000-06-16.
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*
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* $Id: remote.c 1.25 2001/09/30 11:39:49 kls Exp $
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*/
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#include "remote.h"
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#include <fcntl.h>
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#include <netinet/in.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <termios.h>
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#include <unistd.h>
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#if defined REMOTE_LIRC
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/un.h>
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#endif
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#include "config.h"
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#include "tools.h"
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// --- cRcIoBase -------------------------------------------------------------
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cRcIoBase::cRcIoBase(void)
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{
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t = 0;
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}
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cRcIoBase::~cRcIoBase()
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{
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}
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// --- cRcIoKBD --------------------------------------------------------------
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#if defined REMOTE_KBD
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cRcIoKBD::cRcIoKBD(void)
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{
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f.Open(0); // stdin
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}
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cRcIoKBD::~cRcIoKBD()
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{
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}
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void cRcIoKBD::Flush(int WaitMs)
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{
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int t0 = time_ms();
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timeout(10);
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for (;;) {
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while (getch() > 0)
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t0 = time_ms();
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if (time_ms() - t0 >= WaitMs)
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break;
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}
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}
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bool cRcIoKBD::InputAvailable(void)
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{
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return f.Ready(false);
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}
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bool cRcIoKBD::GetCommand(unsigned int *Command, bool *Repeat, bool *Release)
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{
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if (Command) {
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*Command = getch();
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return int(*Command) > 0;
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}
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return false;
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}
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// --- cRcIoRCU --------------------------------------------------------------
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#elif defined REMOTE_RCU
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#define REPEATLIMIT 20 // ms
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#define REPEATDELAY 350 // ms
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cRcIoRCU::cRcIoRCU(char *DeviceName)
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{
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dp = 0;
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mode = modeB;
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code = 0;
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address = 0xFFFF;
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receivedAddress = 0;
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receivedCommand = 0;
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receivedData = receivedRepeat = receivedRelease = false;
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lastNumber = 0;
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if ((f = open(DeviceName, O_RDWR | O_NONBLOCK)) >= 0) {
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struct termios t;
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if (tcgetattr(f, &t) == 0) {
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cfsetspeed(&t, B9600);
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cfmakeraw(&t);
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if (tcsetattr(f, TCSAFLUSH, &t) == 0) {
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Start();
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return;
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}
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}
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LOG_ERROR_STR(DeviceName);
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close(f);
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}
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else
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LOG_ERROR_STR(DeviceName);
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f = -1;
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}
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cRcIoRCU::~cRcIoRCU()
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{
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Cancel();
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}
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void cRcIoRCU::Action(void)
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{
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#pragma pack(1)
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union {
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struct {
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unsigned short address;
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unsigned int command;
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} data;
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unsigned char raw[6];
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} buffer;
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#pragma pack()
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dsyslog(LOG_INFO, "RCU remote control thread started (pid=%d)", getpid());
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int FirstTime = 0;
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unsigned int LastCommand = 0;
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for (; f >= 0;) {
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LOCK_THREAD;
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if (ReceiveByte(REPEATLIMIT) == 'X') {
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for (int i = 0; i < 6; i++) {
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int b = ReceiveByte();
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if (b >= 0) {
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buffer.raw[i] = b;
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if (i == 5) {
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unsigned short Address = ntohs(buffer.data.address); // the PIC sends bytes in "network order"
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unsigned int Command = ntohl(buffer.data.command);
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if (code == 'B' && address == 0x0000 && Command == 0x00004000)
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// Well, well, if it isn't the "d-box"...
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// This remote control sends the above command before and after
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// each keypress - let's just drop this:
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break;
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if (!receivedData) { // only accept new data the previous data has been fetched
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int Now = time_ms();
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if (Command != LastCommand) {
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receivedAddress = Address;
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receivedCommand = Command;
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receivedData = true;
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receivedRepeat = receivedRelease = false;
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FirstTime = Now;
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}
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else {
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if (Now - FirstTime < REPEATDELAY)
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break; // repeat function kicks in after a short delay
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receivedData = receivedRepeat = true;
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}
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LastCommand = Command;
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WakeUp();
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}
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}
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}
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else
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break;
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}
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}
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else if (receivedData) { // the last data before releasing the key hasn't been fetched yet
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if (receivedRepeat) { // it was a repeat, so let's make it a release
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receivedRepeat = false;
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receivedRelease = true;
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LastCommand = 0;
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WakeUp();
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}
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}
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else if (receivedRepeat) { // all data has already been fetched, but the last one was a repeat, so let's generate a release
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receivedData = receivedRelease = true;
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receivedRepeat = false;
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LastCommand = 0;
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WakeUp();
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}
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else
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LastCommand = 0;
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}
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}
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int cRcIoRCU::ReceiveByte(int TimeoutMs)
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{
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// Returns the byte if one was received within a timeout, -1 otherwise
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if (cFile::FileReady(f, TimeoutMs)) {
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unsigned char b;
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if (safe_read(f, &b, 1) == 1)
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return b;
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else
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LOG_ERROR;
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}
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return -1;
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}
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bool cRcIoRCU::SendByteHandshake(unsigned char c)
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{
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if (f >= 0) {
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int w = write(f, &c, 1);
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if (w == 1) {
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for (int reply = ReceiveByte(REPEATLIMIT); reply >= 0;) {
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if (reply == c)
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return true;
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else if (reply == 'X') {
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// skip any incoming RC code - it will come again
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for (int i = 6; i--;) {
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if (ReceiveByte() < 0)
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return false;
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}
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}
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else
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return false;
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}
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}
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LOG_ERROR;
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}
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return false;
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}
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bool cRcIoRCU::SendByte(unsigned char c)
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{
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LOCK_THREAD;
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for (int retry = 5; retry--;) {
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if (SendByteHandshake(c))
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return true;
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}
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return false;
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}
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bool cRcIoRCU::SetCode(unsigned char Code, unsigned short Address)
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{
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code = Code;
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address = Address;
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return SendCommand(code);
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}
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bool cRcIoRCU::SetMode(unsigned char Mode)
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{
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mode = Mode;
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return SendCommand(mode);
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}
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void cRcIoRCU::Flush(int WaitMs)
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{
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LOCK_THREAD;
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int t0 = time_ms();
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for (;;) {
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while (ReceiveByte() >= 0)
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t0 = time_ms();
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if (time_ms() - t0 >= WaitMs)
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break;
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}
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receivedData = receivedRepeat = false;
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}
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bool cRcIoRCU::GetCommand(unsigned int *Command, bool *Repeat, bool *Release)
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{
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if (receivedData) { // first we check the boolean flag without a lock, to avoid delays
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LOCK_THREAD;
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if (receivedData) { // need to check again, since the status might have changed while waiting for the lock
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if (Command)
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*Command = receivedCommand;
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if (Repeat)
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*Repeat = receivedRepeat;
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if (Release)
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*Release = receivedRelease;
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receivedData = false;
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return true;
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}
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}
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if (time(NULL) - t > 60) {
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SendCommand(code); // in case the PIC listens to the wrong code
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t = time(NULL);
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}
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return false;
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}
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bool cRcIoRCU::SendCommand(unsigned char Cmd)
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{
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return SendByte(Cmd | 0x80);
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}
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bool cRcIoRCU::Digit(int n, int v)
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{
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return SendByte(((n & 0x03) << 5) | (v & 0x0F) | (((dp >> n) & 0x01) << 4));
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}
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bool cRcIoRCU::Number(int n, bool Hex)
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{
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LOCK_THREAD;
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if (!Hex) {
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char buf[8];
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sprintf(buf, "%4d", n & 0xFFFF);
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n = 0;
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for (char *d = buf; *d; d++) {
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if (*d == ' ')
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*d = 0xF;
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n = (n << 4) | ((*d - '0') & 0x0F);
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}
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}
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lastNumber = n;
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for (int i = 0; i < 4; i++) {
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if (!Digit(i, n))
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return false;
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n >>= 4;
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}
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return SendCommand(mode);
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}
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bool cRcIoRCU::String(char *s)
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{
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LOCK_THREAD;
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const char *chars = mode == modeH ? "0123456789ABCDEF" : "0123456789-EHLP ";
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int n = 0;
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for (int i = 0; *s && i < 4; s++, i++) {
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n <<= 4;
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for (const char *c = chars; *c; c++) {
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if (*c == *s) {
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n |= c - chars;
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break;
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}
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}
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}
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return Number(n, true);
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}
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void cRcIoRCU::SetPoints(unsigned char Dp, bool On)
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{
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if (On)
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dp |= Dp;
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else
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dp &= ~Dp;
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Number(lastNumber, true);
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}
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bool cRcIoRCU::DetectCode(unsigned char *Code, unsigned short *Address)
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{
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// Caller should initialize 'Code' to 0 and call DetectCode()
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// until it returns true. Whenever DetectCode() returns false
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// and 'Code' is not 0, the caller can use 'Code' to display
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// a message like "Trying code '%c'". If false is returned and
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// 'Code' is 0, all possible codes have been tried and the caller
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// can either stop calling DetectCode() (and give some error
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// message), or start all over again.
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if (*Code < 'A' || *Code > 'D') {
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*Code = 'A';
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return false;
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}
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if (*Code <= 'D') {
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SetMode(modeH);
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char buf[5];
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sprintf(buf, "C0D%c", *Code);
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String(buf);
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SetCode(*Code, 0);
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delay_ms(REPEATDELAY);
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receivedData = receivedRepeat = 0;
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delay_ms(REPEATDELAY);
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if (GetCommand()) {
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*Address = receivedAddress;
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SetMode(modeB);
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String("----");
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return true;
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}
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if (*Code < 'D') {
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(*Code)++;
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return false;
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}
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}
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*Code = 0;
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return false;
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}
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// --- cRcIoLIRC -------------------------------------------------------------
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#elif defined REMOTE_LIRC
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#define REPEATLIMIT 20 // ms
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#define REPEATDELAY 350 // ms
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cRcIoLIRC::cRcIoLIRC(char *DeviceName)
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{
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*keyName = 0;
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receivedData = receivedRepeat = false;
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struct sockaddr_un addr;
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addr.sun_family = AF_UNIX;
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strcpy(addr.sun_path, DeviceName);
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if ((f = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0) {
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if (connect(f, (struct sockaddr *)&addr, sizeof(addr)) >= 0) {
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Start();
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return;
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}
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LOG_ERROR_STR(DeviceName);
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close(f);
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}
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else
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LOG_ERROR_STR(DeviceName);
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f = -1;
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}
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cRcIoLIRC::~cRcIoLIRC()
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{
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Cancel();
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}
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void cRcIoLIRC::Action(void)
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{
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dsyslog(LOG_INFO, "LIRC remote control thread started (pid=%d)", getpid());
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int FirstTime = 0;
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int LastTime = 0;
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char buf[LIRC_BUFFER_SIZE];
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char LastKeyName[LIRC_KEY_BUF];
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for (; f >= 0;) {
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LOCK_THREAD;
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if (cFile::FileReady(f, REPEATLIMIT) && safe_read(f, buf, sizeof(buf)) > 21) {
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if (!receivedData) { // only accept new data the previous data has been fetched
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int count;
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sscanf(buf, "%*x %x %29s", &count, LastKeyName); // '29' in '%29s' is LIRC_KEY_BUF-1!
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int Now = time_ms();
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if (count == 0) {
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strcpy(keyName, LastKeyName);
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receivedData = true;
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receivedRepeat = receivedRelease = false;
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FirstTime = Now;
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}
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else {
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if (Now - FirstTime < REPEATDELAY)
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continue; // repeat function kicks in after a short delay
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receivedData = receivedRepeat = true;
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receivedRelease = false;
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}
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LastTime = Now;
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WakeUp();
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}
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}
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else if (receivedData) { // the last data before releasing the key hasn't been fetched yet
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if (receivedRepeat) { // it was a repeat, so let's make it a release
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if (time_ms() - LastTime > REPEATDELAY) {
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receivedRepeat = false;
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receivedRelease = true;
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WakeUp();
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}
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}
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}
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else if (receivedRepeat) { // all data has already been fetched, but the last one was a repeat, so let's generate a release
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if (time_ms() - LastTime > REPEATDELAY) {
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receivedData = receivedRelease = true;
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receivedRepeat = false;
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WakeUp();
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}
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}
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}
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}
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bool cRcIoLIRC::GetCommand(unsigned int *Command, bool *Repeat, bool *Release)
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{
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if (receivedData) { // first we check the boolean flag without a lock, to avoid delays
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LOCK_THREAD;
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if (receivedData) { // need to check again, since the status might have changed while waiting for the lock
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if (Command)
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*Command = Keys.Encode(keyName);
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if (Repeat)
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*Repeat = receivedRepeat;
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if (Release)
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*Release = receivedRelease;
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receivedData = false;
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return true;
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}
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}
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return false;
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}
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#endif
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