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/* $Id$ */ |
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/* |
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* FreeBob Streaming API |
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* FreeBob = Firewire (pro-)audio for linux |
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* |
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* http://freebob.sf.net |
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* |
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* Copyright (C) 2005,2006 Pieter Palmers <pieterpalmers@users.sourceforge.net> |
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* |
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* This program is free software {} you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation {} either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY {} without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program {} if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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* |
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* |
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*/ |
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#include "IsoStream.h" |
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#include "PacketBuffer.h" |
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namespace FreebobStreaming |
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{ |
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IMPL_DEBUG_MODULE( IsoStream, IsoStream, DEBUG_LEVEL_NORMAL ); |
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IMPL_DEBUG_MODULE( IsoStreamBuffered, IsoStreamBuffered, DEBUG_LEVEL_NORMAL ); |
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int IsoStream::putPacket(unsigned char *data, unsigned int length, |
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unsigned char channel, unsigned char tag, unsigned char sy, |
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unsigned int cycle, unsigned int dropped) { |
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debugOutput( DEBUG_LEVEL_VERY_VERBOSE, |
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"received packet: length=%d, channel=%d, cycle=%d\n", |
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length, channel, cycle ); |
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return 0; |
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} |
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int IsoStream::getPacket(unsigned char *data, unsigned int *length, |
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unsigned char *tag, unsigned char *sy, |
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int cycle, unsigned int dropped, unsigned int max_length) { |
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debugOutput( DEBUG_LEVEL_VERY_VERBOSE, |
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"sending packet: length=%d, cycle=%d\n", |
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*length, cycle ); |
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memcpy(data,&cycle,sizeof(cycle)); |
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*length=sizeof(cycle); |
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*tag = 1; |
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*sy = 0; |
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return 0; |
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} |
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int IsoStream::getNodeId() { |
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if (m_handler) { |
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return m_handler->getLocalNodeId(); |
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} |
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return -1; |
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} |
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void IsoStream::dumpInfo() |
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{ |
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Stream type : %s\n", |
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(this->getType()==EST_Receive ? "Receive" : "Transmit")); |
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Port, Channel : %d, %d\n", |
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m_port, m_channel); |
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}; |
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void IsoStream::reset() { |
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} |
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void IsoStream::prepare() { |
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} |
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int IsoStream::init() { |
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return 0; |
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} |
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/* buffered variant of the ISO stream */ |
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IsoStreamBuffered::~IsoStreamBuffered() { |
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debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
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if(buffer) delete buffer; |
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} |
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int IsoStreamBuffered::init() { |
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debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
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buffer=new PacketBuffer(m_headersize, m_buffersize, m_max_packetsize); |
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if(buffer==NULL) return -1; |
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return buffer->initialize(); |
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} |
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int IsoStreamBuffered::putPacket(unsigned char *data, unsigned int length, |
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unsigned char channel, unsigned char tag, unsigned char sy, |
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unsigned int cycle, unsigned int dropped) { |
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int retval; |
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debugOutput( DEBUG_LEVEL_VERY_VERBOSE, |
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"received packet: length=%d, channel=%d, cycle=%d\n", |
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length, channel, cycle ); |
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if(buffer) { |
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if((retval=buffer->addPacket((quadlet_t *)data,length))) { |
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debugWarning("Receive buffer overflow\n"); |
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} |
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} |
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return 0; |
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} |
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int IsoStreamBuffered::getPacket(unsigned char *data, unsigned int *length, |
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unsigned char *tag, unsigned char *sy, |
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int cycle, unsigned int dropped, unsigned int max_length) { |
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debugOutput( DEBUG_LEVEL_VERY_VERBOSE, |
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"sending packet: length=%d, cycle=%d\n", |
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*length, cycle ); |
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int retval; |
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*length=sizeof(cycle); |
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*tag = 1; |
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*sy = 0; |
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if(buffer) { |
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if((retval=buffer->getNextPacket((quadlet_t *)data,max_length))<0) { |
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debugWarning("Transmit buffer underflow: %d\n",retval); |
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return -1; |
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} |
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*length=retval; |
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} |
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return 0; |
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} |
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int IsoStreamBuffered::getBufferFillPackets() { |
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debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
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if(buffer) return buffer->getBufferFillPackets(); |
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return -1; |
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} |
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int IsoStreamBuffered::getBufferFillPayload() { |
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debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
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if(buffer) return buffer->getBufferFillPayload(); |
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return -1; |
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} |
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void IsoStreamBuffered::setVerboseLevel(int l) { |
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setDebugLevel( l ); |
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if(buffer) { |
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buffer->setVerboseLevel(l); |
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} |
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} |
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} |
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