/engine/DataFormat.cpp
C++ | 1764 lines | 1562 code | 133 blank | 69 comment | 448 complexity | f660977ce682402823cb67175a864ed4 MD5 | raw file
Possible License(s): GPL-2.0
- /**
- * DataFormat.cpp
- * This file is part of the YATE Project http://YATE.null.ro
- *
- * Yet Another Telephony Engine - a fully featured software PBX and IVR
- * Copyright (C) 2004-2006 Null Team
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- #include "yatephone.h"
- #include <string.h>
- #include <stdlib.h>
- namespace TelEngine {
- static const FormatInfo s_formats[] = {
- FormatInfo("slin", 160, 10000, "audio", 8000, 1, true),
- FormatInfo("alaw", 80),
- FormatInfo("mulaw", 80),
- FormatInfo("slin/16000", 320, 10000, "audio", 16000, 1, true),
- FormatInfo("alaw/16000", 160, 10000, "audio", 16000),
- FormatInfo("mulaw/16000", 160, 10000, "audio", 16000),
- FormatInfo("slin/32000", 640, 10000, "audio", 32000, 1, true),
- FormatInfo("alaw/32000", 160, 10000, "audio", 32000),
- FormatInfo("mulaw/32000", 160, 10000, "audio", 32000),
- FormatInfo("2*slin", 320, 10000, "audio", 8000, 2),
- FormatInfo("2*slin/16000", 640, 10000, "audio", 16000, 2),
- FormatInfo("2*slin/32000", 1280, 10000, "audio", 32000, 2),
- FormatInfo("2*alaw", 160, 10000, "audio", 8000, 2),
- FormatInfo("2*mulaw", 160, 10000, "audio", 8000, 2),
- FormatInfo("gsm", 33, 20000),
- FormatInfo("ilbc20", 38, 20000),
- FormatInfo("ilbc30", 50, 30000),
- // FormatInfo("speex", 0),
- FormatInfo("g729", 10, 10000),
- FormatInfo("plain", 0, 0, "text", 0),
- FormatInfo("raw", 0, 0, "data", 0),
- };
- // FIXME: put proper conversion costs everywhere below
- static TranslatorCaps s_simpleCaps[] = {
- { s_formats+0, s_formats+1, 1 },
- { s_formats+0, s_formats+2, 1 },
- { s_formats+1, s_formats+0, 1 },
- { s_formats+1, s_formats+2, 1 },
- { s_formats+2, s_formats+0, 1 },
- { s_formats+2, s_formats+1, 1 },
- { s_formats+9, s_formats+12, 1 },
- { s_formats+9, s_formats+13, 1 },
- { s_formats+12, s_formats+9, 1 },
- { s_formats+13, s_formats+9, 1 },
- { s_formats+12, s_formats+13, 1 },
- { s_formats+13, s_formats+12, 1 },
- { 0, 0, 0 }
- };
- static TranslatorCaps s_simpleCaps16k[] = {
- { s_formats+3, s_formats+4, 1 },
- { s_formats+3, s_formats+5, 1 },
- { s_formats+4, s_formats+3, 1 },
- { s_formats+4, s_formats+5, 1 },
- { s_formats+5, s_formats+3, 1 },
- { s_formats+5, s_formats+4, 1 },
- { 0, 0, 0 }
- };
- static TranslatorCaps s_simpleCaps32k[] = {
- { s_formats+6, s_formats+7, 1 },
- { s_formats+6, s_formats+8, 1 },
- { s_formats+7, s_formats+6, 1 },
- { s_formats+7, s_formats+8, 1 },
- { s_formats+8, s_formats+6, 1 },
- { s_formats+8, s_formats+7, 1 },
- { 0, 0, 0 }
- };
- static TranslatorCaps s_resampCaps[] = {
- { s_formats+0, s_formats+3, 2 },
- { s_formats+0, s_formats+6, 2 },
- { s_formats+3, s_formats+0, 2 },
- { s_formats+3, s_formats+6, 2 },
- { s_formats+6, s_formats+0, 2 },
- { s_formats+6, s_formats+3, 2 },
- { 0, 0, 0 }
- };
- static TranslatorCaps s_stereoCaps[] = {
- { s_formats+0, s_formats+9, 1 },
- { s_formats+9, s_formats+0, 2 },
- { s_formats+3, s_formats+10, 1 },
- { s_formats+10, s_formats+3, 2 },
- { s_formats+6, s_formats+11, 1 },
- { s_formats+11, s_formats+6, 2 },
- { 0, 0, 0 }
- };
- static Mutex s_dataMutex(true,"DataEndpoint");
- static Mutex s_consSrcMutex(false,"DataConsumer::Source");
- class ThreadedSourcePrivate : public Thread
- {
- friend class ThreadedSource;
- public:
- ThreadedSourcePrivate(ThreadedSource* source, const char* name, Thread::Priority prio)
- : Thread(name,prio), m_source(source) { }
- protected:
- virtual void run()
- {
- m_source->run();
- // execute cleanup from this thread if possible
- cleanup();
- }
- virtual void cleanup()
- {
- RefPointer<ThreadedSource> source = m_source;
- m_source = 0;
- if (source)
- source->cleanup();
- }
- private:
- RefPointer<ThreadedSource> m_source;
- };
- // slin/alaw/mulaw converter
- class SimpleTranslator : public DataTranslator
- {
- public:
- SimpleTranslator(const DataFormat& sFormat, const DataFormat& dFormat)
- : DataTranslator(sFormat,dFormat), m_valid(false) {
- if (!getTransSource())
- return;
- int nchan = m_format.numChannels();
- if (nchan != getTransSource()->getFormat().numChannels())
- return;
- m_valid = true;
- m_sFmt = m_format;
- m_dFmt = getTransSource()->getFormat();
- if (nchan != 1) {
- // get rid of the channel prefix
- m_sFmt >> "*";
- m_dFmt >> "*";
- }
- }
- virtual unsigned long Consume(const DataBlock& data, unsigned long tStamp, unsigned long flags)
- {
- if (!ref())
- return 0;
- unsigned long len = 0;
- if (m_valid && getTransSource() && m_buffer.convert(data,m_sFmt,m_dFmt)) {
- if (tStamp == invalidStamp()) {
- unsigned int delta = data.length();
- if (delta > m_buffer.length())
- delta = m_buffer.length();
- tStamp = m_timestamp + delta;
- }
- m_timestamp = tStamp;
- len = getTransSource()->Forward(m_buffer,tStamp,flags);
- }
- deref();
- return len;
- }
- private:
- bool m_valid;
- String m_sFmt;
- String m_dFmt;
- DataBlock m_buffer;
- };
- // slin basic mono resampler
- class ResampTranslator : public DataTranslator
- {
- private:
- int m_sRate, m_dRate;
- short m_last;
- public:
- ResampTranslator(const DataFormat& sFormat, const DataFormat& dFormat)
- : DataTranslator(sFormat,dFormat),
- m_sRate(sFormat.sampleRate()), m_dRate(dFormat.sampleRate()), m_last(0)
- { }
- virtual unsigned long Consume(const DataBlock& data, unsigned long tStamp, unsigned long flags)
- {
- unsigned int n = data.length();
- if (!n || (n & 1) || !m_sRate || !m_dRate || !ref())
- return 0;
- unsigned long len = 0;
- n /= 2;
- DataSource* src = getTransSource();
- if (src) {
- long delta = tStamp - m_timestamp;
- short* s = (short*) data.data();
- DataBlock oblock;
- if (m_dRate > m_sRate) {
- int mul = m_dRate / m_sRate;
- // linear interpolation between existing samples
- delta *= mul;
- oblock.assign(0,2*n*mul);
- short* d = (short*) oblock.data();
- while (n--) {
- short v = *s++;
- for (int i = 1; i <= mul; i++)
- *d++ = ((m_last * (mul - i)) + (v * i)) / mul;
- m_last = v;
- }
- }
- else {
- int div = m_sRate / m_dRate;
- // average an integer number of samples
- delta /= div;
- n /= div;
- oblock.assign(0,2*n);
- short* d = (short*) oblock.data();
- while (n--) {
- int v = 0;
- for (int i = 0; i < div; i++)
- v += *s++;
- v /= div;
- // saturate average result
- if (v > 32767)
- v = 32767;
- if (v < -32767)
- v = -32767;
- *d++ = v;
- }
- }
- if (src->timeStamp() != invalidStamp())
- delta += src->timeStamp();
- len = src->Forward(oblock, delta, flags);
- }
- deref();
- return len;
- }
- };
- // slin simple mono-stereo converter
- class StereoTranslator : public DataTranslator
- {
- private:
- int m_sChans, m_dChans;
- public:
- StereoTranslator(const DataFormat& sFormat, const DataFormat& dFormat)
- : DataTranslator(sFormat,dFormat),
- m_sChans(sFormat.numChannels()), m_dChans(dFormat.numChannels())
- { }
- virtual unsigned long Consume(const DataBlock& data, unsigned long tStamp, unsigned long flags)
- {
- unsigned int n = data.length();
- if (!n || (n & 1) || !ref())
- return 0;
- unsigned long len = 0;
- n /= 2;
- if (getTransSource()) {
- short* s = (short*) data.data();
- DataBlock oblock;
- if ((m_sChans == 1) && (m_dChans == 2)) {
- oblock.assign(0,n*4);
- short* d = (short*) oblock.data();
- // duplicate the sample for each channel
- while (n--) {
- short v = *d++ = *s++;
- *d++ = v;
- }
- }
- else if ((m_sChans == 2) && (m_dChans == 1)) {
- n /= 2;
- oblock.assign(0,2*n);
- short* d = (short*) oblock.data();
- // average the channels
- while (n--) {
- int v = *s++;
- v += *s++;
- v /= 2;
- // saturate average result
- if (v > 32767)
- v = 32767;
- if (v < -32767)
- v = -32767;
- *d++ = v;
- }
- }
- len = getTransSource()->Forward(oblock, tStamp, flags);
- }
- deref();
- return len;
- }
- };
- class SimpleFactory : public TranslatorFactory
- {
- public:
- SimpleFactory(const TranslatorCaps* caps, const char* name)
- : TranslatorFactory(name), m_caps(caps)
- { }
- virtual DataTranslator* create(const DataFormat& sFormat, const DataFormat& dFormat)
- { return converts(sFormat,dFormat) ? new SimpleTranslator(sFormat,dFormat) : 0; }
- virtual const TranslatorCaps* getCapabilities() const
- { return m_caps; }
- private:
- const TranslatorCaps* m_caps;
- };
- class ResampFactory : public TranslatorFactory
- {
- public:
- ResampFactory() : TranslatorFactory("resample")
- { }
- virtual DataTranslator* create(const DataFormat& sFormat, const DataFormat& dFormat)
- { return converts(sFormat,dFormat) ? new ResampTranslator(sFormat,dFormat) : 0; }
- virtual const TranslatorCaps* getCapabilities() const
- { return s_resampCaps; }
- };
- class StereoFactory : public TranslatorFactory
- {
- public:
- StereoFactory() : TranslatorFactory("stereo")
- { }
- virtual DataTranslator* create(const DataFormat& sFormat, const DataFormat& dFormat)
- { return converts(sFormat,dFormat) ? new StereoTranslator(sFormat,dFormat) : 0; }
- virtual const TranslatorCaps* getCapabilities() const
- { return s_stereoCaps; }
- };
- class ChainedFactory : public TranslatorFactory
- {
- public:
- ChainedFactory(TranslatorFactory* factory1, TranslatorFactory* factory2, const FormatInfo* info);
- virtual ~ChainedFactory();
- virtual void removed(const TranslatorFactory* factory);
- virtual DataTranslator* create(const DataFormat& sFormat, const DataFormat& dFormat);
- virtual const TranslatorCaps* getCapabilities() const
- {
- return (m_factory1 && m_factory1->getCapabilities() &&
- m_factory2 && m_factory2->getCapabilities()) ? m_capabilities : 0;
- }
- virtual unsigned int length() const
- { return m_length; }
- virtual const FormatInfo* intermediate() const;
- virtual bool intermediate(const FormatInfo* info) const;
- virtual const char* name() const
- { return m_name.c_str(); }
- private:
- TranslatorFactory* m_factory1;
- TranslatorFactory* m_factory2;
- String m_name;
- DataFormat m_format;
- unsigned int m_length;
- const TranslatorCaps* m_capabilities;
- };
- };
- using namespace TelEngine;
- int FormatInfo::guessSamples(int len) const
- {
- if (!(frameTime && frameSize))
- return 0;
- return (len / frameSize) * sampleRate * (long)frameTime / 1000000;
- }
- int FormatInfo::dataRate() const
- {
- if (!frameTime)
- return 0;
- return frameSize * 1000000 / frameTime;
- }
- typedef struct _flist {
- struct _flist* next;
- const FormatInfo* info;
- } flist;
- static flist* s_flist = 0;
- const FormatInfo* FormatRepository::getFormat(const String& name)
- {
- if (name.null())
- return 0;
- // search in the static list first
- for (unsigned int i = 0; i < (sizeof(s_formats)/sizeof(FormatInfo)); i++)
- if (name == s_formats[i].name)
- return s_formats+i;
- // then try the installed formats
- for (flist* l = s_flist; l; l = l->next)
- if (name == l->info->name)
- return l->info;
- return 0;
- }
- const FormatInfo* FormatRepository::addFormat(const String& name, int fsize, int ftime, const String& type, int srate, int nchan)
- {
- if (name.null() || type.null())
- return 0;
- const FormatInfo* f = getFormat(name);
- if (f) {
- // found by name - check if it exactly matches what we have already
- if ((fsize != f->frameSize) ||
- (ftime != f->frameTime) ||
- (srate != f->sampleRate) ||
- (nchan != f->numChannels) ||
- (type != f->type)) {
- Debug(DebugWarn,"Tried to register '%s' format '%s' fsize=%d ftime=%d srate=%d nchan=%d",
- type.c_str(),name.c_str(),fsize,ftime,srate,nchan);
- return 0;
- }
- return f;
- }
- // not in list - add a new one to the installed formats
- DDebug(DebugInfo,"Registering '%s' format '%s' fsize=%d ftime=%d srate=%d nchan=%d",
- type.c_str(),name.c_str(),fsize,ftime,srate,nchan);
- f = new FormatInfo(::strdup(name),fsize,ftime,::strdup(type),srate,nchan);
- flist* l = new flist;
- l->info = f;
- l->next = s_flist;
- s_flist = l;
- return f;
- }
- void DataFormat::changed()
- {
- m_parsed = 0;
- String::changed();
- }
- const FormatInfo* DataFormat::getInfo() const
- {
- if (!(m_parsed || null()))
- m_parsed = FormatRepository::getFormat(*this);
- return m_parsed;
- }
- void DataConsumer::destroyed()
- {
- if (m_source || m_override) {
- // this should not happen - but scream bloody murder if so
- Debug(DebugFail,"DataConsumer destroyed with source=%p override=%p [%p]",
- m_source,m_override,this);
- }
- if (m_source)
- m_source->detach(this);
- if (m_override)
- m_override->detach(this);
- DataNode::destroyed();
- }
- void* DataConsumer::getObject(const String& name) const
- {
- if (name == YSTRING("DataConsumer"))
- return const_cast<DataConsumer*>(this);
- return DataNode::getObject(name);
- }
- unsigned long DataConsumer::Consume(const DataBlock& data, unsigned long tStamp, unsigned long flags, DataSource* source)
- {
- if (source == m_override)
- tStamp += m_overrideTsDelta;
- else if (m_override || (source != m_source))
- return 0;
- else
- tStamp += m_regularTsDelta;
- u_int64_t tsTime = Time::now();
- unsigned long len = Consume(data,tStamp,flags);
- m_timestamp = tStamp;
- m_lastTsTime = tsTime;
- return len;
- }
- bool DataConsumer::synchronize(DataSource* source)
- {
- if (!source)
- return false;
- bool override = false;
- if (source == m_override)
- override = true;
- else if (source != m_source)
- return false;
- if (!(m_timestamp || m_regularTsDelta || m_overrideTsDelta)) {
- // first time
- m_timestamp = source->timeStamp();
- return true;
- }
- const FormatInfo* info = getFormat().getInfo();
- int64_t dt = 0;
- if (info) {
- // adjust timestamp for possible silence or gaps in data, at least 25ms
- dt = Time::now() - m_lastTsTime;
- if (dt >= 25000) {
- dt = (dt * info->sampleRate) / 1000000;
- DDebug(DebugInfo,"Data gap, offsetting consumer timestamps by " FMT64 " [%p]",dt,this);
- }
- else
- dt = 0;
- }
- dt += m_timestamp - source->timeStamp();
- DDebug(DebugInfo,"Offsetting consumer %s timestamps by " FMT64 " [%p]",
- (override ? "override" : "regular"),dt,this);
- if (override)
- m_overrideTsDelta = (long int)dt;
- else
- m_regularTsDelta = (long int)dt;
- return true;
- }
- bool DataSource::valid() const
- {
- Lock mylock(const_cast<DataSource*>(this));
- if (!m_translator)
- return true;
- // this is a translator's source - check if we have at least one valid consumer
- for (ObjList* l = m_consumers.skipNull(); l; l=l->skipNext()) {
- DataConsumer* c = static_cast<DataConsumer *>(l->get());
- if (c->valid())
- return true;
- }
- return false;
- }
- unsigned long DataSource::Forward(const DataBlock& data, unsigned long tStamp, unsigned long flags)
- {
- Lock mylock(this,100000);
- // we DON'T refcount here, we rely on the mutex to keep us safe
- if (!(mylock.locked() && alive())) {
- DDebug(DebugInfo,"Forwarding on a dead DataSource! [%p]",this);
- return 0;
- }
- // try to evaluate amount of samples in this packet
- const FormatInfo* f = m_format.getInfo();
- unsigned long nSamp = f ? f->guessSamples(data.length()) : 0;
- // if no timestamp provided - try to use next expected
- if (tStamp == invalidStamp())
- tStamp = m_nextStamp;
- // still no timestamp known - wild guess based on this packet size
- if (tStamp == invalidStamp()) {
- DDebug(DebugNote,"Unknown timestamp - assuming %lu + %lu [%p]",
- m_timestamp,nSamp,this);
- tStamp = m_timestamp + nSamp;
- }
- unsigned long len = invalidStamp();
- bool empty = true;
- ObjList* l = m_consumers.skipNull();
- while (l) {
- DataConsumer* c = static_cast<DataConsumer *>(l->get());
- unsigned long ll = c->Consume(data,tStamp,flags,this);
- if (ll || c->valid()) {
- // get the minimum data amount forwarded to all consumers
- if (len > ll)
- len = ll;
- l = l->skipNext();
- empty = false;
- }
- else {
- DDebug(DebugInfo,"Consumer %p becomes invalid [%p]",c,this);
- detachInternal(c);
- // do not advance in list, we just removed the current element
- l = l->skipNull();
- }
- }
- if (empty)
- len = 0;
- m_timestamp = tStamp;
- m_nextStamp = nSamp ? (tStamp + nSamp) : invalidStamp();
- return len;
- }
- bool DataSource::attach(DataConsumer* consumer, bool override)
- {
- if (!alive()) {
- DDebug(DebugFail,"Attaching a dead DataSource! [%p]",this);
- return false;
- }
- DDebug(DebugAll,"DataSource [%p] attaching consumer%s [%p]",
- this,(override ? " as override" : ""),consumer);
- if (!(consumer && consumer->ref()))
- return false;
- Lock mylock(this);
- DataSource*& src = override ? consumer->m_override : consumer->m_source;
- if (src != this) {
- s_consSrcMutex.lock();
- RefPointer<DataSource> src2(src);
- if (src2 && (this != src2)) {
- s_consSrcMutex.unlock();
- src2->detach(consumer);
- s_consSrcMutex.lock();
- if (src) {
- Debug(DebugGoOn,"DataSource %p raced us attaching consumer %p [%p]",
- src,consumer,this);
- s_consSrcMutex.unlock();
- consumer->deref();
- return false;
- }
- }
- src = this;
- s_consSrcMutex.unlock();
- }
- consumer->synchronize(this);
- m_consumers.append(consumer);
- return true;
- }
- bool DataSource::detach(DataConsumer* consumer)
- {
- if (!consumer)
- return false;
- if (!ref()) {
- DDebug(DebugFail,"Detaching a dead DataSource! [%p]",this);
- return false;
- }
- DDebug(DebugAll,"DataSource [%p] detaching consumer [%p]",this,consumer);
- // lock the source to prevent races with the Forward method
- lock();
- bool ok = detachInternal(consumer);
- unlock();
- deref();
- return ok;
- }
- bool DataSource::detachInternal(DataConsumer* consumer)
- {
- if (!consumer)
- return false;
- DataConsumer *temp = static_cast<DataConsumer *>(m_consumers.remove(consumer,false));
- if (temp) {
- s_consSrcMutex.lock();
- if (temp->m_source == this)
- temp->m_source = 0;
- if (temp->m_override == this)
- temp->m_override = 0;
- s_consSrcMutex.unlock();
- temp->deref();
- return true;
- }
- DDebug(DebugInfo,"DataSource [%p] has no consumer [%p]",this,consumer);
- return false;
- }
- void DataSource::destroyed()
- {
- m_translator = 0;
- clear();
- DataNode::destroyed();
- }
- void DataSource::clear()
- {
- // keep the source locked to prevent races with the Forward method
- lock();
- while (detachInternal(static_cast<DataConsumer*>(m_consumers.get())))
- ;
- unlock();
- }
- void DataSource::synchronize(unsigned long tStamp)
- {
- Lock mylock(this,100000);
- if (!(mylock.locked() && alive())) {
- DDebug(DebugInfo,"Synchronizing on a dead DataSource! [%p]",this);
- return;
- }
- m_timestamp = tStamp;
- m_nextStamp = invalidStamp();
- ObjList *l = m_consumers.skipNull();
- for (; l; l=l->skipNext()) {
- DataConsumer *c = static_cast<DataConsumer *>(l->get());
- c->synchronize(this);
- }
- }
- void* DataSource::getObject(const String& name) const
- {
- if (name == YSTRING("DataSource"))
- return const_cast<DataSource*>(this);
- return DataNode::getObject(name);
- }
- DataEndpoint::DataEndpoint(CallEndpoint* call, const char* name)
- : m_name(name), m_source(0), m_consumer(0),
- m_peer(0), m_call(call),
- m_peerRecord(0), m_callRecord(0)
- {
- DDebug(DebugAll,"DataEndpoint::DataEndpoint(%p,'%s') [%p]",call,name,this);
- if (m_call)
- m_call->m_data.append(this);
- }
- void DataEndpoint::destroyed()
- {
- DDebug(DebugAll,"DataEndpoint::destroyed() '%s' call=%p [%p]",
- m_name.c_str(),m_call,this);
- if (m_call)
- m_call->m_data.remove(this,false);
- disconnect();
- setPeerRecord();
- setCallRecord();
- clearSniffers();
- setSource();
- setConsumer();
- RefObject::destroyed();
- }
- void* DataEndpoint::getObject(const String& name) const
- {
- if (name == YSTRING("DataEndpoint"))
- return const_cast<DataEndpoint*>(this);
- return RefObject::getObject(name);
- }
- const String& DataEndpoint::toString() const
- {
- return m_name;
- }
- Mutex* DataEndpoint::mutex() const
- {
- return m_call ? m_call->mutex() : 0;
- }
- Mutex& DataEndpoint::commonMutex()
- {
- return s_dataMutex;
- }
- bool DataEndpoint::connect(DataEndpoint* peer)
- {
- if (!peer) {
- disconnect();
- return false;
- }
- Lock lock(s_dataMutex);
- if (peer == m_peer)
- return true;
- DDebug(DebugInfo,"DataEndpoint '%s' connecting peer %p to [%p]",m_name.c_str(),peer,this);
- ref();
- peer->ref();
- disconnect();
- peer->disconnect();
- bool native = (name() == peer->name()) && nativeConnect(peer);
- if (!native) {
- XDebug(DebugInfo,"DataEndpoint s=%p c=%p peer @%p s=%p c=%p [%p]",
- getSource(),getConsumer(),peer,peer->getSource(),peer->getConsumer(),this);
- DataSource* s = getSource();
- DataConsumer* c = peer->getConsumer();
- if (s && c)
- DataTranslator::attachChain(s,c);
- c = peer->getPeerRecord();
- if (s && c)
- DataTranslator::attachChain(s,c);
- s = peer->getSource();
- c = getConsumer();
- if (s && c)
- DataTranslator::attachChain(s,c);
- c = getPeerRecord();
- if (s && c)
- DataTranslator::attachChain(s,c);
- }
- m_peer = peer;
- peer->m_peer = this;
- return true;
- }
- bool DataEndpoint::disconnect()
- {
- Lock lock(s_dataMutex);
- if (!m_peer)
- return false;
- DDebug(DebugInfo,"DataEndpoint '%s' disconnecting peer %p from [%p]",m_name.c_str(),m_peer,this);
- DataSource* s = getSource();
- DataConsumer* c = m_peer->getConsumer();
- if (s && c)
- DataTranslator::detachChain(s,c);
- c = m_peer->getPeerRecord();
- if (s && c)
- DataTranslator::detachChain(s,c);
- s = m_peer->getSource();
- c = getConsumer();
- if (s && c)
- DataTranslator::detachChain(s,c);
- c = getPeerRecord();
- if (s && c)
- DataTranslator::detachChain(s,c);
- DataEndpoint* temp = m_peer;
- m_peer = 0;
- temp->m_peer = 0;
- lock.drop();
- temp->deref();
- return deref();
- }
- void DataEndpoint::setSource(DataSource* source)
- {
- Lock lock(s_dataMutex);
- if (source == m_source)
- return;
- DataConsumer* c1 = m_peer ? m_peer->getConsumer() : 0;
- DataConsumer* c2 = m_peer ? m_peer->getPeerRecord() : 0;
- DataSource* temp = m_source;
- XDebug(DebugInfo,"DataEndpoint::setSource(%p) peer=%p s=%p c1=%p c2=%p cr=%p [%p]",
- source,m_peer,temp,c1,c2,m_callRecord,this);
- if (c1)
- c1->ref();
- if (c2)
- c2->ref();
- if (m_callRecord)
- m_callRecord->ref();
- m_source = 0;
- if (temp) {
- if (c1) {
- DataTranslator::detachChain(temp,c1);
- if (c1->getConnSource())
- Debug(DebugWarn,"consumer source not cleared in %p",c1);
- }
- if (c2) {
- DataTranslator::detachChain(temp,c2);
- if (c2->getConnSource())
- Debug(DebugWarn,"consumer source not cleared in %p",c2);
- }
- if (m_callRecord) {
- DataTranslator::detachChain(temp,m_callRecord);
- if (m_callRecord->getConnSource())
- Debug(DebugWarn,"consumer source not cleared in %p",m_callRecord);
- }
- ObjList* l = m_sniffers.skipNull();
- for (; l; l = l->skipNext())
- DataTranslator::detachChain(temp,static_cast<DataConsumer*>(l->get()));
- temp->attached(false);
- }
- if (source) {
- source->ref();
- if (c1)
- DataTranslator::attachChain(source,c1);
- if (c2)
- DataTranslator::attachChain(source,c2);
- if (m_callRecord)
- DataTranslator::attachChain(source,m_callRecord);
- ObjList* l = m_sniffers.skipNull();
- for (; l; l = l->skipNext())
- DataTranslator::attachChain(source,static_cast<DataConsumer*>(l->get()));
- source->attached(true);
- }
- m_source = source;
- if (m_callRecord)
- m_callRecord->deref();
- lock.drop();
- TelEngine::destruct(temp);
- TelEngine::destruct(c1);
- TelEngine::destruct(c2);
- }
- void DataEndpoint::setConsumer(DataConsumer* consumer)
- {
- Lock lock(s_dataMutex);
- if (consumer == m_consumer)
- return;
- DataSource* source = m_peer ? m_peer->getSource() : 0;
- DataConsumer* temp = m_consumer;
- XDebug(DebugInfo,"DataEndpoint::setConsumer(%p) peer=%p c=%p ps=%p [%p]",
- consumer,m_peer,temp,source,this);
- if (consumer) {
- if (consumer->ref()) {
- if (source)
- DataTranslator::attachChain(source,consumer);
- }
- else
- consumer = 0;
- }
- m_consumer = consumer;
- if (source && temp)
- DataTranslator::detachChain(source,temp);
- if (temp) {
- s_consSrcMutex.lock();
- RefPointer<DataSource> src = temp->getConnSource();
- s_consSrcMutex.unlock();
- if (src) {
- src->detach(temp);
- src = 0;
- }
- s_consSrcMutex.lock();
- src = temp->getOverSource();
- s_consSrcMutex.unlock();
- if (src) {
- src->detach(temp);
- src = 0;
- }
- temp->attached(false);
- }
- if (consumer)
- consumer->attached(true);
- lock.drop();
- TelEngine::destruct(temp);
- }
- void DataEndpoint::setPeerRecord(DataConsumer* consumer)
- {
- Lock lock(s_dataMutex);
- if (consumer == m_peerRecord)
- return;
- DataSource* source = m_peer ? m_peer->getSource() : 0;
- DataConsumer* temp = m_peerRecord;
- XDebug(DebugInfo,"DataEndpoint::setPeerRecord(%p) peer=%p pr=%p ps=%p [%p]",
- consumer,m_peer,temp,source,this);
- if (consumer) {
- if (consumer->ref()) {
- if (source)
- DataTranslator::attachChain(source,consumer);
- }
- else
- consumer = 0;
- }
- m_peerRecord = consumer;
- if (source && temp)
- DataTranslator::detachChain(source,temp);
- if (temp)
- temp->attached(false);
- if (consumer)
- consumer->attached(true);
- lock.drop();
- TelEngine::destruct(temp);
- }
- void DataEndpoint::setCallRecord(DataConsumer* consumer)
- {
- Lock lock(s_dataMutex);
- if (consumer == m_callRecord)
- return;
- DataConsumer* temp = m_callRecord;
- XDebug(DebugInfo,"DataEndpoint::setCallRecord(%p) cr=%p s=%p [%p]",
- consumer,temp,m_source,this);
- if (consumer) {
- if (consumer->ref()) {
- if (m_source)
- DataTranslator::attachChain(m_source,consumer);
- }
- else
- consumer = 0;
- }
- m_callRecord = consumer;
- if (temp && m_source)
- DataTranslator::detachChain(m_source,temp);
- if (temp)
- temp->attached(false);
- if (consumer)
- consumer->attached(true);
- lock.drop();
- TelEngine::destruct(temp);
- }
- bool DataEndpoint::addSniffer(DataConsumer* sniffer)
- {
- if (!sniffer)
- return false;
- Lock lock(s_dataMutex);
- if (m_sniffers.find(sniffer))
- return false;
- if (!sniffer->ref())
- return false;
- XDebug(DebugInfo,"DataEndpoint::addSniffer(%p) s=%p [%p]",
- sniffer,m_source,this);
- m_sniffers.append(sniffer);
- if (m_source)
- DataTranslator::attachChain(m_source,sniffer);
- sniffer->attached(true);
- return true;
- }
- bool DataEndpoint::delSniffer(DataConsumer* sniffer)
- {
- if (!sniffer)
- return false;
- Lock lock(s_dataMutex);
- XDebug(DebugInfo,"DataEndpoint::delSniffer(%p) s=%p [%p]",
- sniffer,m_source,this);
- if (!m_sniffers.remove(sniffer,false))
- return false;
- if (m_source)
- DataTranslator::detachChain(m_source,sniffer);
- sniffer->attached(false);
- sniffer->deref();
- return true;
- }
- void DataEndpoint::clearSniffers()
- {
- Lock lock(s_dataMutex);
- for (;;) {
- DataConsumer* sniffer = static_cast<DataConsumer*>(m_sniffers.remove(false));
- if (!sniffer)
- return;
- XDebug(DebugInfo,"DataEndpoint::clearSniffers() sn=%p s=%p [%p]",
- sniffer,m_source,this);
- if (m_source)
- DataTranslator::detachChain(m_source,sniffer);
- sniffer->attached(false);
- sniffer->deref();
- }
- }
- bool DataEndpoint::clearData(DataNode* node)
- {
- if (!node)
- return false;
- Lock lock(s_dataMutex);
- bool ok = delSniffer(static_cast<DataConsumer*>(node));
- if (m_callRecord == node) {
- setCallRecord();
- ok = true;
- }
- if (m_peerRecord == node) {
- setPeerRecord();
- ok = true;
- }
- if (m_consumer == node) {
- setConsumer();
- ok = true;
- }
- if (m_source == node) {
- setSource();
- ok = true;
- }
- return ok;
- }
- // Change source(s) or consumer(s)
- bool DataEndpoint::control(NamedList& params)
- {
- return (m_source && m_source->control(params)) ||
- (m_consumer && m_consumer->control(params)) ||
- (m_peerRecord && m_peerRecord->control(params)) ||
- (m_callRecord && m_callRecord->control(params));
- }
- void ThreadedSource::destroyed()
- {
- if (m_thread)
- Debug(DebugFail,"ThreadedSource destroyed holding thread %p [%p]",m_thread,this);
- DataSource::destroyed();
- }
- bool ThreadedSource::start(const char* name, Thread::Priority prio)
- {
- Lock mylock(this);
- if (!m_thread) {
- ThreadedSourcePrivate* thread = new ThreadedSourcePrivate(this,name,prio);
- if (thread->startup()) {
- m_thread = thread;
- return true;
- }
- delete thread;
- return false;
- }
- return m_thread->running();
- }
- void ThreadedSource::stop()
- {
- Lock mylock(this);
- ThreadedSourcePrivate* tmp = m_thread;
- m_thread = 0;
- if (!tmp || tmp->running())
- return;
- Debug(DebugInfo,"ThreadedSource deleting stopped thread %p [%p]",tmp,this);
- mylock.drop();
- delete tmp;
- }
- void ThreadedSource::cleanup()
- {
- lock();
- m_thread = 0;
- unlock();
- }
- Thread* ThreadedSource::thread() const
- {
- return m_thread;
- }
- bool ThreadedSource::running() const
- {
- Lock mylock(const_cast<ThreadedSource*>(this));
- return m_thread && m_thread->running();
- }
- bool ThreadedSource::looping(bool runConsumers) const
- {
- Lock mylock(const_cast<ThreadedSource*>(this));
- if ((refcount() <= 1) && !(runConsumers && alive() && m_consumers.count()))
- return false;
- return m_thread && !m_thread->check(false) &&
- m_thread->isCurrent() && !Engine::exiting();
- }
- DataTranslator::DataTranslator(const char* sFormat, const char* dFormat)
- : DataConsumer(sFormat)
- {
- DDebug(DebugAll,"DataTranslator::DataTranslator('%s','%s') [%p]",sFormat,dFormat,this);
- m_tsource = new DataSource(dFormat);
- m_tsource->setTranslator(this);
- }
- DataTranslator::DataTranslator(const char* sFormat, DataSource* source)
- : DataConsumer(sFormat), m_tsource(source)
- {
- DDebug(DebugAll,"DataTranslator::DataTranslator('%s',%p) [%p]",sFormat,source,this);
- m_tsource->setTranslator(this);
- }
- DataTranslator::~DataTranslator()
- {
- DDebug(DebugAll,"DataTranslator::~DataTranslator() [%p]",this);
- DataSource *temp = m_tsource;
- m_tsource = 0;
- if (temp) {
- temp->setTranslator(0);
- temp->deref();
- }
- }
- void* DataTranslator::getObject(const String& name) const
- {
- if (name == YSTRING("DataTranslator"))
- return const_cast<DataTranslator*>(this);
- return DataConsumer::getObject(name);
- }
- DataTranslator* DataTranslator::getFirstTranslator()
- {
- DataSource* tsource = getConnSource();
- if (!tsource)
- return this;
- DataTranslator* trans = tsource->getTranslator();
- return trans ? trans->getFirstTranslator() : this;
- }
- const DataTranslator* DataTranslator::getFirstTranslator() const
- {
- const DataSource* tsource = getConnSource();
- if (!tsource)
- return this;
- const DataTranslator* trans = tsource->getTranslator();
- return trans ? trans->getFirstTranslator() : this;
- }
- bool DataTranslator::synchronize(DataSource* source)
- {
- if (!DataConsumer::synchronize(source))
- return false;
- if (m_tsource)
- m_tsource->synchronize(timeStamp());
- return true;
- }
- Mutex DataTranslator::s_mutex(true,"DataTranslator");
- ObjList DataTranslator::s_factories;
- unsigned int DataTranslator::s_maxChain = 3;
- static ObjList s_compose;
- static SimpleFactory s_sFactory(s_simpleCaps,"g711");
- static SimpleFactory s_sFactory16k(s_simpleCaps16k,"g711wb");
- static SimpleFactory s_sFactory32k(s_simpleCaps32k,"g711uwb");
- // FIXME
- static ResampFactory s_rFactory;
- static StereoFactory s_stereoFactory;
- void DataTranslator::setMaxChain(unsigned int maxChain)
- {
- if (maxChain < 1)
- maxChain = 1;
- if (maxChain > 4)
- maxChain = 4;
- s_maxChain = maxChain;
- }
- void DataTranslator::install(TranslatorFactory* factory)
- {
- if (!factory)
- return;
- Lock lock(s_mutex);
- if (s_factories.find(factory))
- return;
- s_factories.append(factory)->setDelete(false);
- s_compose.append(factory)->setDelete(false);
- }
- void DataTranslator::compose()
- {
- for (;;) {
- TranslatorFactory* factory = static_cast<TranslatorFactory*>(s_compose.remove(false));
- if (!factory)
- break;
- compose(factory);
- }
- }
- void DataTranslator::compose(TranslatorFactory* factory)
- {
- const TranslatorCaps* caps = factory->getCapabilities();
- XDebug(DebugInfo,"Composing TranslatorFactory '%s' (%u,'%s'->'%s'->'%s')",
- factory->name(),factory->length(),caps ? caps->src->name : "",
- factory->intermediate() ? factory->intermediate()->name : "",
- caps ? caps->dest->name : "");
- if ((!caps) || (factory->length() >= s_maxChain))
- return;
- Lock lock(s_mutex);
- // now see if we can build some conversion chains with this factory
- ListIterator iter(s_factories);
- while (TranslatorFactory* f2 = static_cast<TranslatorFactory*>(iter.get())) {
- // do not combine with itself
- if (f2 == factory)
- continue;
- // don't try to build a too long chain
- if ((factory->length() + f2->length()) > s_maxChain) {
- XDebug(DebugAll,"Chain would be too long");
- continue;
- }
- const FormatInfo* fi;
- // and avoid loops
- if (factory->intermediate(fi = f2->intermediate()) ||
- f2->intermediate(fi = factory->intermediate())) {
- XDebug(DebugAll,"Would directly loop through format '%s'",fi->name);
- continue;
- }
- const TranslatorCaps* c2 = f2->getCapabilities();
- XDebug(DebugInfo,"Composing '%s' with '%s' (%u,'%s'->'%s'->'%s')",
- factory->name(),f2->name(),f2->length(),c2 ? c2->src->name : "",
- f2->intermediate() ? f2->intermediate()->name : "",
- c2 ? c2->dest->name : "");
- for (; c2 && c2->src && c2->dest; c2++) {
- if (!(c2->src->converter || c2->dest->converter))
- continue;
- if (factory->intermediate(fi = c2->src) || factory->intermediate(fi = c2->dest)) {
- XDebug(DebugAll,"Factory '%s' already has intermediate '%s'",factory->name(),fi->name);
- break;
- }
- for (const TranslatorCaps* c = caps; c->src && c->dest; c++) {
- if (!(c->src->converter || c->dest->converter))
- continue;
- if (f2->intermediate(fi = c->src) || f2->intermediate(fi = c->dest)) {
- XDebug(DebugAll,"Factory '%s' already has intermediate '%s'",f2->name(),fi->name);
- break;
- }
- if ((c->src == c2->dest) && c->src->converter) {
- if (canConvert(c2->src,c->dest)) {
- XDebug(DebugAll,"Can already convert '%s' to '%s'",c2->src->name,c->dest->name);
- continue;
- }
- DDebug(DebugInfo,"Building chain (%s)%s%s -> (%s) -> %s%s(%s)",
- c2->src->name,
- f2->intermediate() ? " -> " : "",
- f2->intermediate() ? f2->intermediate()->name : "",
- c->src->name,
- factory->intermediate() ? factory->intermediate()->name : "",
- factory->intermediate() ? " -> " : "",
- c->dest->name);
- new ChainedFactory(f2,factory,c->src);
- break;
- }
- if ((c2->src == c->dest) && c2->src->converter) {
- if (canConvert(c->src,c2->dest)) {
- XDebug(DebugAll,"Can already convert '%s' to '%s'",c->src->name,c2->dest->name);
- continue;
- }
- DDebug(DebugInfo,"Building chain (%s)%s%s -> (%s) -> %s%s(%s)",
- c->src->name,
- factory->intermediate() ? " -> " : "",
- factory->intermediate() ? factory->intermediate()->name : "",
- c->dest->name,
- f2->intermediate() ? f2->intermediate()->name : "",
- f2->intermediate() ? " -> " : "",
- c2->dest->name);
- new ChainedFactory(factory,f2,c->dest);
- break;
- }
- }
- }
- }
- }
- void DataTranslator::uninstall(TranslatorFactory* factory)
- {
- if (!factory)
- return;
- s_mutex.lock();
- s_compose.remove(factory,false);
- s_factories.remove(factory,false);
- // notify chained factories about the removal
- ListIterator iter(s_factories);
- while (TranslatorFactory* f = static_cast<TranslatorFactory*>(iter.get()))
- f->removed(factory);
- s_mutex.unlock();
- }
- ObjList* DataTranslator::srcFormats(const DataFormat& dFormat, int maxCost, unsigned int maxLen, ObjList* lst)
- {
- const FormatInfo* fi = dFormat.getInfo();
- if (!fi)
- return lst;
- s_mutex.lock();
- compose();
- ObjList* l = s_factories.skipNull();
- for (; l; l=l->skipNext()) {
- TranslatorFactory* f = static_cast<TranslatorFactory*>(l->get());
- if (maxLen && (f->length() > maxLen))
- continue;
- const TranslatorCaps* caps = f->getCapabilities();
- for (; caps && caps->src && caps->dest; caps++) {
- if (caps->dest == fi) {
- if ((maxCost >= 0) && (caps->cost > maxCost))
- continue;
- if (!lst)
- lst = new ObjList;
- else if (lst->find(caps->src->name))
- continue;
- lst->append(new String(caps->src->name));
- }
- }
- }
- s_mutex.unlock();
- return lst;
- }
- ObjList* DataTranslator::destFormats(const DataFormat& sFormat, int maxCost, unsigned int maxLen, ObjList* lst)
- {
- const FormatInfo* fi = sFormat.getInfo();
- if (!fi)
- return lst;
- s_mutex.lock();
- compose();
- ObjList* l = s_factories.skipNull();
- for (; l; l=l->skipNext()) {
- TranslatorFactory* f = static_cast<TranslatorFactory*>(l->get());
- if (maxLen && (f->length() > maxLen))
- continue;
- const TranslatorCaps* caps = f->getCapabilities();
- for (; caps && caps->src && caps->dest; caps++) {
- if (caps->src == fi) {
- if ((maxCost >= 0) && (caps->cost > maxCost))
- continue;
- if (!lst)
- lst = new ObjList;
- else if (lst->find(caps->dest->name))
- continue;
- lst->append(new String(caps->dest->name));
- }
- }
- }
- s_mutex.unlock();
- return lst;
- }
- // helper function to avoid duplicating large amounts of code
- static void mergeOne(ObjList*& lst, const ObjList* formats, const DataFormat& fmt, const FormatInfo* fi, bool sameRate, bool sameChans)
- {
- if (!fi)
- return;
- const DataFormat fmti(fi);
- if (lst && lst->find(fmti))
- return;
- if (formats->find(fmti))
- return;
- const FormatInfo* fo = fmt.getInfo();
- if (fo == fi)
- return;
- if (sameRate && (fo->sampleRate != fi->sampleRate))
- return;
- if (sameChans && (fo->numChannels != fi->numChannels))
- return;
- if (DataTranslator::canConvert(fmt,fmti)) {
- if (!lst)
- lst = new ObjList;
- lst->append(new String(fmti));
- }
- }
- ObjList* DataTranslator::allFormats(const ObjList* formats, bool existing, bool sameRate, bool sameChans)
- {
- if (!formats)
- return 0;
- ObjList* lst = 0;
- s_mutex.lock();
- compose();
- const ObjList* fmts;
- if (existing) {
- // put existing formats first
- for (fmts = formats; fmts; fmts = fmts->next()) {
- const String* fmt = static_cast<const String*>(fmts->get());
- if (!(fmt && *fmt))
- continue;
- const FormatInfo* fo = FormatRepository::getFormat(*fmt);
- if (fo) {
- if (!lst)
- lst = new ObjList;
- lst->append(new String(fo->name));
- }
- }
- }
- for (fmts = formats; fmts; fmts = fmts->next()) {
- const String* fmt = static_cast<const String*>(fmts->get());
- if (!(fmt && *fmt))
- continue;
- const FormatInfo* fo = FormatRepository::getFormat(*fmt);
- if (!fo)
- continue;
- const DataFormat fmto(fo);
- // search in the static list first
- for (unsigned int i = 0; i < (sizeof(s_formats)/sizeof(FormatInfo)); i++)
- mergeOne(lst,formats,fmto,s_formats+i,sameRate,sameChans);
- // then try the installed formats
- for (flist* l = s_flist; l; l = l->next)
- mergeOne(lst,formats,fmto,l->info,sameRate,sameChans);
- }
- s_mutex.unlock();
- return lst;
- }
- ObjList* DataTranslator::allFormats(const String& formats, bool existing, bool sameRate, bool sameChans)
- {
- ObjList* fmts = formats.split(',',false);
- if (!fmts)
- return 0;
- ObjList* lst = allFormats(fmts,existing,sameRate,sameChans);
- TelEngine::destruct(fmts);
- return lst;
- }
- bool DataTranslator::canConvert(const DataFormat& fmt1, const DataFormat& fmt2)
- {
- if (fmt1 == fmt2)
- return true;
- const FormatInfo* fi1 = fmt1.getInfo();
- const FormatInfo* fi2 = fmt2.getInfo();
- if (!(fi1 && fi2))
- return false;
- Lock lock(s_mutex);
- compose();
- return canConvert(fi1,fi2);
- }
- bool DataTranslator::canConvert(const FormatInfo* fmt1, const FormatInfo* fmt2)
- {
- if (fmt1 == fmt2)
- return true;
- bool ok1 = false, ok2 = false;
- ObjList* l = s_factories.skipNull();
- for (; l; l=l->skipNext()) {
- TranslatorFactory* f = static_cast<TranslatorFactory*>(l->get());
- const TranslatorCaps* caps = f->getCapabilities();
- for (; caps && caps->src && caps->dest; caps++) {
- if ((!ok1) && (caps->src == fmt1) && (caps->dest == fmt2))
- ok1 = true;
- if ((!ok2) && (caps->src == fmt2) && (caps->dest == fmt1))
- ok2 = true;
- if (ok1 && ok2)
- return true;
- }
- }
- return false;
- }
- int DataTranslator::cost(const DataFormat& sFormat, const DataFormat& dFormat)
- {
- int c = -1;
- const FormatInfo* src = sFormat.getInfo();
- const FormatInfo* dest = dFormat.getInfo();
- if (!(src && dest))
- return c;
- s_mutex.lock();
- compose();
- ObjList* l = s_factories.skipNull();
- for (; l; l=l->skipNext()) {
- TranslatorFactory* f = static_cast<TranslatorFactory*>(l->get());
- const TranslatorCaps* caps = f->getCapabilities();
- for (; caps && caps->src && caps->dest; caps++) {
- if ((c == -1) || (c > caps->cost)) {
- if ((caps->src == src) && (caps->dest == dest))
- c = caps->cost;
- }
- }
- }
- s_mutex.unlock();
- return c;
- }
- DataTranslator* DataTranslator::create(const DataFormat& sFormat, const DataFormat& dFormat)
- {
- if (sFormat == dFormat) {
- DDebug(DebugAll,"Not creating identity DataTranslator for '%s'",sFormat.c_str());
- return 0;
- }
- DataTranslator *trans = 0;
- s_mutex.lock();
- compose();
- ObjList *l = s_factories.skipNull();
- for (; l; l=l->skipNext()) {
- TranslatorFactory* f = static_cast<TranslatorFactory*>(l->get());
- trans = f->create(sFormat,dFormat);
- if (trans) {
- Debug(DebugAll,"Created DataTranslator %p for '%s' -> '%s' by factory %p (len=%u)",
- trans,sFormat.c_str(),dFormat.c_str(),f,f->length());
- break;
- }
- }
- s_mutex.unlock();
- if (!trans)
- Debug(DebugInfo,"No DataTranslator created for '%s' -> '%s'",
- sFormat.c_str(),dFormat.c_str());
- return trans;
- }
- bool DataTranslator::attachChain(DataSource* source, DataConsumer* consumer, bool override)
- {
- XDebug(DebugInfo,"DataTranslator::attachChain [%p] '%s' -> [%p] '%s'",
- source,(source ? source->getFormat().c_str() : ""),
- consumer,(consumer ? consumer->getFormat().c_str() : ""));
- if (!source || !consumer)
- return false;
- if (!source->getFormat() || !consumer->getFormat()) {
- Debug(DebugInfo,"DataTranslator::attachChain [%p] '%s' -> [%p] '%s' not possible",
- source,source->getFormat().c_str(),
- consumer,consumer->getFormat().c_str());
- return false;
- }
- bool retv = false;
- // first attempt to connect directly, changing format if possible
- if ((source->getFormat() == consumer->getFormat()) ||
- // don't attempt to change consumer format for overrides
- (!override && consumer->setFormat(source->getFormat())) ||
- source->setFormat(consumer->getFormat())) {
- source->attach(consumer,override);
- retv = true;
- }
- else {
- // then try to create a translator or chain of them
- DataTranslator* trans2 = create(source->getFormat(),consumer->getFormat());
- if (trans2) {
- DataTranslator* trans = trans2->getFirstTranslator();
- trans2->getTransSource()->attach(consumer,override);
- source->attach(trans);
- trans->deref();
- retv = true;
- }
- }
- NDebug(retv ? DebugAll : DebugWarn,"DataTranslator::attachChain [%p] '%s' -> [%p] '%s' %s",
- source,source->getFormat().c_str(),consumer,consumer->getFormat().c_str(),
- retv ? "succeeded" : "failed");
- return retv;
- }
- bool DataTranslator::detachChain(DataSource* source, DataConsumer* consumer)
- {
- Debugger debug(DebugAll,"DataTranslator::detachChain","(%p,%p)",source,consumer);
- if (!source || !consumer)
- return false;
- s_consSrcMutex.lock();
- RefPointer<DataSource> tsource = consumer->getConnSource();
- s_consSrcMutex.unlock();
- if (tsource) {
- if (source->detach(consumer))
- return true;
- tsource->lock();
- RefPointer<DataTranslator> trans = tsource->getTranslator();
- tsource->unlock();
- if (trans && detachChain(source,trans))
- return true;
- Debug(DebugWarn,"DataTranslator failed to detach chain [%p] -> [%p]",source,consumer);
- }
- return false;
- }
- TranslatorFactory::~TranslatorFactory()
- {
- DataTranslator::uninstall(this);
- }
- void TranslatorFactory::removed(const TranslatorFactory* factory)
- {
- }
- unsigned int TranslatorFactory::length() const
- {
- return 1;
- }
- const FormatInfo* TranslatorFactory::intermediate() const
- {
- return 0;
- }
- bool TranslatorFactory::intermediate(const FormatInfo* info) const
- {
- return false;
- }
- bool TranslatorFactory::converts(const DataFormat& sFormat, const DataFormat& dFormat) const
- {
- const FormatInfo* src = sFormat.getInfo();
- const FormatInfo* dest = dFormat.getInfo();
- const TranslatorCaps* caps = getCapabilities();
- if (!(src && dest && caps))
- return false;
- for (; caps->src && caps->dest; caps++) {
- if ((caps->src == src) && (caps->dest == dest))
- return true;
- }
- return false;
- }
- ChainedFactory::ChainedFactory(TranslatorFactory* factory1, TranslatorFactory* factory2, const FormatInfo* info)
- : TranslatorFactory("chained"),
- m_factory1(factory1), m_factory2(factory2), m_format(info),
- m_length(factory1->length()+factory2->length()), m_capabilities(0)
- {
- XDebug(DebugInfo,"ChainedFactory::ChainedFactory('%s' (%d,'%s'), '%s' (%d,'%s'),'%s') len=%u [%p]",
- factory1->name(),factory1->length(),factory1->intermediate() ? factory1->intermediate()->name : "",
- factory2->name(),factory2->length(),factory2->intermediate() ? factory2->intermediate()->name : "",
- info->name,m_length,this);
- m_name << factory1->name() << "(" << info->name << ")" << factory2->name();
- if (!info->converter)
- Debug(DebugMild,"Building chain factory '%s' using non-converter format",m_name.c_str());
- const TranslatorCaps* cap1 = factory1->getCapabilities();
- const TranslatorCaps* cap2 = factory2->getCapabilities();
- int c1 = 0;
- int c2 = 0;
- const TranslatorCaps* c;
- for (c = cap1; c && c->src && c->dest; c++)
- if ((c->src == info) || (c->dest == info))
- c1++;
- for (c = cap2; c && c->src && c->dest; c++)
- if ((c->src == info) || (c->dest == info))
- c2++;
- // we overallocate
- int ccount = c1 * c2;
- int i = 0;
- TranslatorCaps* caps = new TranslatorCaps[ccount+1];
- for (; cap1 && cap1->src && cap1->dest; cap1++) {
- if (cap1->src == info) {
- for (c = cap2; c && c->src && c->dest; c++)
- if (c->dest == info) {
- caps[i].src = c->src;
- caps[i].dest = cap1->dest;
- caps[i].cost = cap1->cost + c->cost;
- XDebug(DebugAll,"Capab[%d] '%s' -> '%s' cost %d",
- i,caps[i].src->name,caps[i].dest->name,caps[i].cost);
- i++;
- }
- }
- else if (cap1->dest == info) {
- for (c = cap2; c && c->src && c->dest; c++)
- if (c->src == info) {
- caps[i].src = cap1->src;
- caps[i].dest = c->dest;
- caps[i].cost = cap1->cost + c->cost;
- XDebug(DebugAll,"Capab[%d] '%s' -> '%s' cost %d",
- i,caps[i].src->name,caps[i].dest->name,caps[i].cost);
- i++;
- }
- }
- }
- caps[i].src = 0;
- caps[i].dest = 0;
- caps[i].cost = 0;
- m_capabilities = caps;
- }
- ChainedFactory::~ChainedFactory()
- {
- XDebug(DebugInfo,"ChainedFactory::~ChainedFactory() '%s' [%p]",
- m_name.c_str(),this);
- delete[] const_cast<TranslatorCaps*>(m_capabilities);
- m_capabilities = 0;
- }
- void ChainedFactory::removed(const TranslatorFactory* factory)
- {
- if ((factory == m_factory1) || (factory == m_factory2))
- destruct();
- }
- const FormatInfo* ChainedFactory::intermediate() const
- {
- return m_format.getInfo();
- }
- bool ChainedFactory::intermediate(const FormatInfo* info) const
- {
- if (!info)
- return false;
- return (m_format.getInfo() == info) ||
- m_factory1->intermediate(info) ||
- m_factory2->intermediate(info);
- }
- DataTranslator* ChainedFactory::create(const DataFormat& sFormat, const DataFormat& dFormat)
- {
- if (!converts(sFormat,dFormat))
- return 0;
- DataTranslator* trans = m_factory1->create(sFormat,m_format);
- DataTranslator* trans2 = 0;
- if (trans)
- trans2 = m_factory2->create(m_format,dFormat);
- else {
- // try the other way around
- trans = m_factory2->create(sFormat,m_format);
- if (!trans)
- return 0;
- trans2 = m_factory1->create(m_format,dFormat);
- }
- if (trans2) {
- XDebug(DebugInfo,"Chaining translators: '%s' %p --(%s)-> %p '%s' [%p]",
- sFormat.c_str(),trans,m_format.c_str(),trans2,dFormat.c_str(),this);
- // trans2 may be a chain itself so find the first translator
- DataTranslator* trans1 = trans2->getFirstTranslator();
- trans->getTransSource()->attach(trans1);
- trans1->deref();
- }
- else
- // trans may be a chain itself so clear from first translator
- trans->getFirstTranslator()->destruct();
- return trans2;
- }
- /* vi: set ts=8 sw=4 sts=4 noet: */