453 lines
14 KiB
C
453 lines
14 KiB
C
/*
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* device.c: IPTV plugin for the Video Disk Recorder
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*
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* See the README file for copyright information and how to reach the author.
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*
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*/
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#include "config.h"
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#include "device.h"
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#define IPTV_MAX_DEVICES MAXDEVICES
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cIptvDevice * IptvDevices[IPTV_MAX_DEVICES] = { NULL };
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unsigned int cIptvDevice::deviceCount = 0;
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cIptvDevice::cIptvDevice(unsigned int Index)
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: deviceIndex(Index),
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dvrFd(-1),
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isPacketDelivered(false),
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isOpenDvr(false),
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sidScanEnabled(false),
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pidScanEnabled(false),
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mutex()
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{
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//debug("cIptvDevice::cIptvDevice(%d)\n", deviceIndex);
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isyslog("creating IPTV device %d (CardIndex=%d)", deviceIndex, CardIndex());
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tsBuffer = new cRingBufferLinear(MEGABYTE(IptvConfig.GetTsBufferSize()),
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(TS_SIZE * IptvConfig.GetReadBufferTsCount()),
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false, "IPTV");
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tsBuffer->SetTimeouts(100, 100);
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ResetBuffering();
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pUdpProtocol = new cIptvProtocolUdp();
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pHttpProtocol = new cIptvProtocolHttp();
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pFileProtocol = new cIptvProtocolFile();
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pExtProtocol = new cIptvProtocolExt();
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pIptvStreamer = new cIptvStreamer(tsBuffer, &mutex);
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pPidScanner = new cPidScanner;
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// Initialize filter pointers
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memset(secfilters, '\0', sizeof(secfilters));
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// Start section handler for iptv device
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StartSectionHandler();
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// Sid scanner must be created after the section handler
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pSidScanner = new cSidScanner;
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if (pSidScanner)
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AttachFilter(pSidScanner);
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// Check if dvr fifo exists
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struct stat sb;
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cString filename = cString::sprintf(IPTV_DVR_FILENAME, deviceIndex);
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stat(filename, &sb);
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if (S_ISFIFO(sb.st_mode)) {
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dvrFd = open(filename, O_RDWR | O_NONBLOCK);
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if (dvrFd >= 0)
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dsyslog("IPTV device %d redirecting input stream to '%s'", deviceIndex, *filename);
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}
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}
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cIptvDevice::~cIptvDevice()
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{
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debug("cIptvDevice::~cIptvDevice(%d)\n", deviceIndex);
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// Stop section handler of iptv device
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StopSectionHandler();
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DELETE_POINTER(pIptvStreamer);
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DELETE_POINTER(pUdpProtocol);
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DELETE_POINTER(pHttpProtocol);
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DELETE_POINTER(pFileProtocol);
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DELETE_POINTER(pExtProtocol);
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DELETE_POINTER(tsBuffer);
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DELETE_POINTER(pPidScanner);
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// Detach and destroy sid filter
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if (pSidScanner) {
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Detach(pSidScanner);
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DELETE_POINTER(pSidScanner);
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}
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// Destroy all filters
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for (int i = 0; i < eMaxSecFilterCount; ++i)
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DeleteFilter(i);
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// Close dvr fifo
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if (dvrFd >= 0) {
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int fd = dvrFd;
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dvrFd = -1;
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close(fd);
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}
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}
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bool cIptvDevice::Initialize(unsigned int DeviceCount)
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{
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debug("cIptvDevice::Initialize(): DeviceCount=%d\n", DeviceCount);
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if (DeviceCount > IPTV_MAX_DEVICES)
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DeviceCount = IPTV_MAX_DEVICES;
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for (unsigned int i = 0; i < DeviceCount; ++i)
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IptvDevices[i] = new cIptvDevice(i);
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for (unsigned int i = DeviceCount; i < IPTV_MAX_DEVICES; ++i)
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IptvDevices[i] = NULL;
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return true;
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}
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unsigned int cIptvDevice::Count(void)
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{
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unsigned int count = 0;
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debug("cIptvDevice::Count()\n");
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for (unsigned int i = 0; i < IPTV_MAX_DEVICES; ++i) {
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if (IptvDevices[i] != NULL)
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count++;
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}
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return count;
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}
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cIptvDevice *cIptvDevice::GetIptvDevice(int CardIndex)
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{
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//debug("cIptvDevice::GetIptvDevice(%d)\n", CardIndex);
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for (unsigned int i = 0; i < IPTV_MAX_DEVICES; ++i) {
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if ((IptvDevices[i] != NULL) && (IptvDevices[i]->CardIndex() == CardIndex)) {
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//debug("cIptvDevice::GetIptvDevice(%d): FOUND!\n", CardIndex);
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return IptvDevices[i];
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}
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}
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return NULL;
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}
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cString cIptvDevice::GetGeneralInformation(void)
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{
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//debug("cIptvDevice::GetGeneralInformation(%d)\n", deviceIndex);
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return cString::sprintf("IPTV device: %d\nCardIndex: %d\n%s%s%sChannel: %s",
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deviceIndex, CardIndex(),
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pIptvStreamer ? *pIptvStreamer->GetInformation() : "",
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pIptvStreamer ? *pIptvStreamer->GetStreamerStatistic() : "",
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*GetBufferStatistic(),
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*Channels.GetByNumber(cDevice::CurrentChannel())->ToText());
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}
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cString cIptvDevice::GetPidsInformation(void)
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{
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//debug("cIptvDevice::GetPidsInformation(%d)\n", deviceIndex);
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return GetPidStatistic();
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}
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cString cIptvDevice::GetFiltersInformation(void)
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{
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//debug("cIptvDevice::GetFiltersInformation(%d)\n", deviceIndex);
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unsigned int count = 0;
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cString info("Active section filters:\n");
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// loop through active section filters
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for (unsigned int i = 0; i < eMaxSecFilterCount; ++i) {
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if (secfilters[i]) {
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info = cString::sprintf("%sFilter %d: %s Pid=0x%02X (%s)\n", *info, i,
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*secfilters[i]->GetSectionStatistic(), secfilters[i]->GetPid(),
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id_pid(secfilters[i]->GetPid()));
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if (++count > IPTV_STATS_ACTIVE_FILTERS_COUNT)
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break;
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}
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}
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return info;
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}
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cString cIptvDevice::GetInformation(unsigned int Page)
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{
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// generate information string
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cString info;
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switch (Page) {
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case IPTV_DEVICE_INFO_GENERAL:
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info = GetGeneralInformation();
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break;
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case IPTV_DEVICE_INFO_PIDS:
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info = GetPidsInformation();
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break;
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case IPTV_DEVICE_INFO_FILTERS:
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info = GetFiltersInformation();
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break;
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default:
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info = cString::sprintf("%s%s%s",
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*GetGeneralInformation(),
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*GetPidsInformation(),
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*GetFiltersInformation());
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break;
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}
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return info;
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}
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cString cIptvDevice::GetChannelSettings(const char *IptvParam, int *Parameter, int *SidScan, int *PidScan, cIptvProtocolIf* *Protocol)
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{
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debug("cIptvDevice::GetChannelSettings(%d)\n", deviceIndex);
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char *tag = NULL;
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char *proto = NULL;
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char *loc = NULL;
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if (sscanf(IptvParam, "%a[^|]|S%dP%d|%a[^|]|%a[^|]|%u", &tag, SidScan, PidScan, &proto, &loc, Parameter) == 6) {
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cString tagstr(tag, true);
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cString protostr(proto, true);
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cString locstr(loc, true);
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// check if IPTV tag
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if (strncasecmp(*tagstr, "IPTV", 4) == 0) {
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// check if protocol is supported and update the pointer
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if (strncasecmp(*protostr, "UDP", 3) == 0)
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*Protocol = pUdpProtocol;
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else if (strncasecmp(*protostr, "HTTP", 4) == 0)
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*Protocol = pHttpProtocol;
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else if (strncasecmp(*protostr, "FILE", 4) == 0)
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*Protocol = pFileProtocol;
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else if (strncasecmp(*protostr, "EXT", 3) == 0)
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*Protocol = pExtProtocol;
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else
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return NULL;
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// return location
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return locstr;
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}
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}
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else if (sscanf(IptvParam, "%a[^|]|P%dS%d|%a[^|]|%a[^|]|%u", &tag, PidScan, SidScan, &proto, &loc, Parameter) == 6) {
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cString tagstr(tag, true);
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cString protostr(proto, true);
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cString locstr(loc, true);
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// check if IPTV tag
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if (strncasecmp(*tagstr, "IPTV", 4) == 0) {
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// check if protocol is supported and update the pointer
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if (strncasecmp(*protostr, "UDP", 3) == 0)
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*Protocol = pUdpProtocol;
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else if (strncasecmp(*protostr, "HTTP", 4) == 0)
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*Protocol = pHttpProtocol;
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else if (strncasecmp(*protostr, "FILE", 4) == 0)
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*Protocol = pFileProtocol;
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else if (strncasecmp(*protostr, "EXT", 3) == 0)
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*Protocol = pExtProtocol;
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else
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return NULL;
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// return location
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return locstr;
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}
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}
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return NULL;
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}
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bool cIptvDevice::ProvidesIptv(const char *Param) const
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{
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debug("cIptvDevice::ProvidesIptv(%d)\n", deviceIndex);
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return (strncasecmp(Param, "IPTV", 4) == 0);
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}
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bool cIptvDevice::ProvidesSource(int Source) const
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{
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debug("cIptvDevice::ProvidesSource(%d)\n", deviceIndex);
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return (cSource::IsPlug(Source));
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}
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bool cIptvDevice::ProvidesTransponder(const cChannel *Channel) const
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{
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debug("cIptvDevice::ProvidesTransponder(%d)\n", deviceIndex);
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return (ProvidesSource(Channel->Source()) && ProvidesIptv(Channel->PluginParam()));
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}
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bool cIptvDevice::ProvidesChannel(const cChannel *Channel, int Priority, bool *NeedsDetachReceivers) const
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{
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bool result = false;
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bool needsDetachReceivers = false;
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debug("cIptvDevice::ProvidesChannel(%d)\n", deviceIndex);
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if (ProvidesTransponder(Channel))
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result = true;
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if (NeedsDetachReceivers)
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*NeedsDetachReceivers = needsDetachReceivers;
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return result;
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}
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int cIptvDevice::NumProvidedSystems(void) const
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{
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return 1;
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}
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bool cIptvDevice::SetChannelDevice(const cChannel *Channel, bool LiveView)
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{
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int parameter, sidscan, pidscan;
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cString location;
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cIptvProtocolIf *protocol;
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debug("cIptvDevice::SetChannelDevice(%d)\n", deviceIndex);
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location = GetChannelSettings(Channel->PluginParam(), ¶meter, &sidscan, &pidscan, &protocol);
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if (isempty(location)) {
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error("ERROR: Unrecognized IPTV channel settings: %s", Channel->PluginParam());
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return false;
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}
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sidScanEnabled = sidscan ? true : false;
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pidScanEnabled = pidscan ? true : false;
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if (pIptvStreamer->Set(location, parameter, deviceIndex, protocol)) {
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if (sidScanEnabled && pSidScanner && IptvConfig.GetSectionFiltering())
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pSidScanner->SetChannel(Channel);
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if (pidScanEnabled && pPidScanner)
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pPidScanner->SetChannel(Channel);
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}
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return true;
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}
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bool cIptvDevice::SetPid(cPidHandle *Handle, int Type, bool On)
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{
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debug("cIptvDevice::SetPid(%d) Pid=%d Type=%d On=%d\n", deviceIndex, Handle->pid, Type, On);
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return true;
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}
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bool cIptvDevice::DeleteFilter(unsigned int Index)
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{
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if ((Index < eMaxSecFilterCount) && secfilters[Index]) {
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//debug("cIptvDevice::DeleteFilter(%d) Index=%d\n", deviceIndex, Index);
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cIptvSectionFilter *tmp = secfilters[Index];
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secfilters[Index] = NULL;
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delete tmp;
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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 cIptvDevice::IsBlackListed(u_short Pid, u_char Tid, u_char Mask)
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{
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//debug("cIptvDevice::IsBlackListed(%d) Pid=%d Tid=%02X Mask=%02X\n", deviceIndex, Pid, Tid, Mask);
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// loop through section filter table
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for (int i = 0; i < SECTION_FILTER_TABLE_SIZE; ++i) {
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int index = IptvConfig.GetDisabledFilters(i);
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// check if matches
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if ((index >= 0) && (index < SECTION_FILTER_TABLE_SIZE) &&
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(section_filter_table[index].pid == Pid) && (section_filter_table[index].tid == Tid) &&
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(section_filter_table[index].mask == Mask)) {
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//debug("cIptvDevice::IsBlackListed(%d) Found=%s\n", deviceIndex, section_filter_table[index].description);
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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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int cIptvDevice::OpenFilter(u_short Pid, u_char Tid, u_char Mask)
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{
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// Check if disabled by user
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if (!IptvConfig.GetSectionFiltering())
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return -1;
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// Blacklist check, refuse certain filters
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if (IsBlackListed(Pid, Tid, Mask))
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return -1;
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// Search the next free filter slot
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for (unsigned int i = 0; i < eMaxSecFilterCount; ++i) {
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if (!secfilters[i]) {
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//debug("cIptvDevice::OpenFilter(%d): Pid=%d Tid=%02X Mask=%02X Index=%d\n", deviceIndex, Pid, Tid, Mask, i);
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secfilters[i] = new cIptvSectionFilter(i, deviceIndex, Pid, Tid, Mask);
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return secfilters[i]->GetReadDesc();
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}
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}
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// No free filter slot found
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return -1;
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}
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void cIptvDevice::CloseFilter(int Handle)
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{
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for (unsigned int i = 0; i < eMaxSecFilterCount; ++i) {
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if (secfilters[i] && (Handle == secfilters[i]->GetReadDesc())) {
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//debug("cIptvDevice::CloseFilter(%d): %d\n", deviceIndex, Handle);
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DeleteFilter(i);
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break;
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}
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}
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}
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bool cIptvDevice::OpenDvr(void)
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{
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debug("cIptvDevice::OpenDvr(%d)\n", deviceIndex);
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mutex.Lock();
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isPacketDelivered = false;
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tsBuffer->Clear();
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mutex.Unlock();
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ResetBuffering();
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pIptvStreamer->Open();
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if (sidScanEnabled && pSidScanner && IptvConfig.GetSectionFiltering())
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pSidScanner->SetStatus(true);
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isOpenDvr = true;
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return true;
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}
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void cIptvDevice::CloseDvr(void)
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{
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debug("cIptvDevice::CloseDvr(%d)\n", deviceIndex);
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if (sidScanEnabled && pSidScanner && IptvConfig.GetSectionFiltering())
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pSidScanner->SetStatus(false);
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if (pIptvStreamer)
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pIptvStreamer->Close();
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isOpenDvr = false;
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}
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bool cIptvDevice::HasLock(int TimeoutMs)
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{
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//debug("cIptvDevice::HasLock(%d): %d\n", deviceIndex, TimeoutMs);
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return (!IsBuffering());
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}
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void cIptvDevice::ResetBuffering(void)
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{
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debug("cIptvDevice::ResetBuffering(%d)\n", deviceIndex);
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// pad prefill to multiple of TS_SIZE
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tsBufferPrefill = MEGABYTE(IptvConfig.GetTsBufferSize()) *
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IptvConfig.GetTsBufferPrefillRatio() / 100;
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tsBufferPrefill -= (tsBufferPrefill % TS_SIZE);
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}
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bool cIptvDevice::IsBuffering(void)
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{
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//debug("cIptvDevice::IsBuffering(%d): %d\n", deviceIndex);
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if (tsBufferPrefill && tsBuffer->Available() < tsBufferPrefill)
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return true;
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else
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tsBufferPrefill = 0;
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return false;
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}
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bool cIptvDevice::GetTSPacket(uchar *&Data)
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{
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int Count = 0;
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//debug("cIptvDevice::GetTSPacket(%d)\n", deviceIndex);
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if (!IsBuffering()) {
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if (isPacketDelivered) {
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tsBuffer->Del(TS_SIZE);
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isPacketDelivered = false;
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// Update buffer statistics
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AddBufferStatistic(TS_SIZE, tsBuffer->Available());
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}
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uchar *p = tsBuffer->Get(Count);
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if (p && Count >= TS_SIZE) {
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if (*p != TS_SYNC_BYTE) {
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for (int i = 1; i < Count; i++) {
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if (p[i] == TS_SYNC_BYTE) {
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Count = i;
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break;
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}
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}
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tsBuffer->Del(Count);
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error("ERROR: skipped %d bytes to sync on TS packet\n", Count);
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return false;
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}
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isPacketDelivered = true;
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Data = p;
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// Update pid statistics
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AddPidStatistic(ts_pid(p), payload(p));
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// Send data also to dvr fifo
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if ((dvrFd >= 0) && (write(dvrFd, p, TS_SIZE) != TS_SIZE))
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error("ERROR: write failed to FIFO\n");
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// Analyze incomplete streams with built-in pid analyzer
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if (pidScanEnabled && pPidScanner)
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pPidScanner->Process(p);
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// Run the data through all filters
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for (unsigned int i = 0; i < eMaxSecFilterCount; ++i) {
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if (secfilters[i])
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secfilters[i]->ProcessData(p);
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}
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return true;
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}
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}
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// Reduce cpu load by preventing busylooping
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cCondWait::SleepMs(100);
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Data = NULL;
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return true;
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}
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