mirror of https://github.com/VDR4Arch/vdr.git
329 lines
8.0 KiB
C
329 lines
8.0 KiB
C
/*
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* rcu.c: RCU remote control
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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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* $Id: rcu.c 1.13 2006/01/08 11:40:09 kls Exp $
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*/
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#include "rcu.h"
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#include <netinet/in.h>
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#include <termios.h>
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#include <unistd.h>
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#include "tools.h"
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#define REPEATLIMIT 20 // ms
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#define REPEATDELAY 350 // ms
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cRcuRemote::cRcuRemote(const char *DeviceName)
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:cRemote("RCU")
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,cThread("RCU remote control")
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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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number = 0;
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data = 0;
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receivedCommand = false;
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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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SetNumber(8888);
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const char *Setup = GetSetup();
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if (Setup) {
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code = *Setup;
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SetCode(code);
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isyslog("connecting to %s remote control using code %c", Name(), code);
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}
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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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cRcuRemote::~cRcuRemote()
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{
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Cancel();
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}
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bool cRcuRemote::Ready(void)
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{
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return f >= 0;
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}
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bool cRcuRemote::Initialize(void)
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{
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if (f >= 0) {
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unsigned char Code = '0';
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isyslog("trying codes for %s remote control...", Name());
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for (;;) {
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if (DetectCode(&Code)) {
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code = Code;
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break;
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}
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}
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isyslog("established connection to %s remote control using code %c", Name(), code);
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char buffer[16];
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snprintf(buffer, sizeof(buffer), "%c", code);
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PutSetup(buffer);
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return true;
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}
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return false;
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}
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void cRcuRemote::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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time_t LastCodeRefresh = 0;
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cTimeMs FirstTime;
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unsigned char LastCode = 0, LastMode = 0;
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uint64 LastCommand = 0;
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unsigned int LastData = 0;
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bool repeat = false;
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while (Running() && f >= 0) {
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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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uint64 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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Command |= uint64(Address) << 32;
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if (Command != LastCommand) {
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LastCommand = Command;
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repeat = false;
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FirstTime.Set();
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}
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else {
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if (FirstTime.Elapsed() < REPEATDELAY)
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break; // repeat function kicks in after a short delay
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repeat = true;
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}
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Put(Command, repeat);
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receivedCommand = true;
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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 (repeat) { // the last one was a repeat, so let's generate a release
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Put(LastCommand, false, true);
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repeat = false;
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LastCommand = 0;
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}
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else {
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unsigned int d = data;
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if (d != LastData) {
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SendData(d);
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LastData = d;
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}
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unsigned char c = code;
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if (c != LastCode) {
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SendCommand(c);
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LastCode = c;
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}
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unsigned char m = mode;
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if (m != LastMode) {
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SendCommand(m);
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LastMode = m;
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}
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LastCommand = 0;
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}
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if (code && time(NULL) - LastCodeRefresh > 60) {
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SendCommand(code); // in case the PIC listens to the wrong code
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LastCodeRefresh = time(NULL);
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}
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}
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}
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int cRcuRemote::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 cRcuRemote::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 cRcuRemote::SendByte(unsigned char c)
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{
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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 cRcuRemote::SendData(unsigned int n)
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{
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for (int i = 0; i < 4; i++) {
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if (!SendByte(n & 0x7F))
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return false;
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n >>= 8;
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}
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return SendCommand(mode);
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}
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void cRcuRemote::SetCode(unsigned char Code)
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{
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code = Code;
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}
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void cRcuRemote::SetMode(unsigned char Mode)
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{
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mode = Mode;
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}
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bool cRcuRemote::SendCommand(unsigned char Cmd)
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{
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return SendByte(Cmd | 0x80);
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}
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void cRcuRemote::SetNumber(int n, bool Hex)
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{
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number = n;
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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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unsigned int m = 0;
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for (int i = 0; i < 4; i++) {
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m <<= 8;
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m |= ((i & 0x03) << 5) | (n & 0x0F) | (((dp >> i) & 0x01) << 4);
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n >>= 4;
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}
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data = m;
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}
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void cRcuRemote::SetString(char *s)
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{
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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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SetNumber(n, true);
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}
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void cRcuRemote::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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SetNumber(number);
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}
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bool cRcuRemote::DetectCode(unsigned char *Code)
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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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SetString(buf);
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SetCode(*Code);
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cCondWait::SleepMs(2 * REPEATDELAY);
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if (receivedCommand) {
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SetMode(modeB);
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SetString("----");
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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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void cRcuRemote::ChannelSwitch(const cDevice *Device, int ChannelNumber)
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{
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if (ChannelNumber && Device->IsPrimaryDevice())
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SetNumber(cDevice::CurrentChannel());
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}
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void cRcuRemote::Recording(const cDevice *Device, const char *Name, const char *FileName, bool On)
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{
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SetPoints(1 << Device->DeviceNumber(), Device->Receiving());
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}
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