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/* |
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* Copyright (C) 2005-2007 by Pieter Palmers |
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* |
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* This file is part of FFADO |
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* FFADO = Free Firewire (pro-)audio drivers for linux |
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* |
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* FFADO is based upon FreeBoB. |
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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 3 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, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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#include "IsoHandler.h" |
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#include "ieee1394service.h" |
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#include "libstreaming/generic/StreamProcessor.h" |
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#include <errno.h> |
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#include <netinet/in.h> |
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#include <assert.h> |
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#include <unistd.h> |
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#include <string.h> |
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#include <iostream> |
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using namespace std; |
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using namespace Streaming; |
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IMPL_DEBUG_MODULE( IsoHandler, IsoHandler, DEBUG_LEVEL_NORMAL ); |
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|
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/* the C callbacks */ |
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enum raw1394_iso_disposition |
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IsoXmitHandler::iso_transmit_handler(raw1394handle_t handle, |
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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) { |
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|
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IsoXmitHandler *xmitHandler=static_cast<IsoXmitHandler *>(raw1394_get_userdata(handle)); |
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assert(xmitHandler); |
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return xmitHandler->getPacket(data, length, tag, sy, cycle, dropped); |
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} |
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|
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enum raw1394_iso_disposition |
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IsoRecvHandler::iso_receive_handler(raw1394handle_t handle, unsigned char *data, |
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unsigned int length, unsigned char channel, |
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unsigned char tag, unsigned char sy, unsigned int cycle, |
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unsigned int dropped) { |
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|
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IsoRecvHandler *recvHandler=static_cast<IsoRecvHandler *>(raw1394_get_userdata(handle)); |
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assert(recvHandler); |
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return recvHandler->putPacket(data, length, channel, tag, sy, cycle, dropped); |
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} |
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int IsoHandler::busreset_handler(raw1394handle_t handle, unsigned int generation) |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "Busreset happened, generation %d...\n", generation); |
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|
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IsoHandler *handler=static_cast<IsoHandler *>(raw1394_get_userdata(handle)); |
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assert(handler); |
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return handler->handleBusReset(generation); |
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} |
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|
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|
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/* Base class implementation */ |
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IsoHandler::IsoHandler(IsoHandlerManager& manager) |
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: m_manager(manager) |
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, m_handle(0) |
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, m_buf_packets(400) |
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, m_max_packet_size(1024) |
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, m_irq_interval(-1) |
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, m_packetcount(0) |
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, m_dropped(0) |
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, m_Client(0) |
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, m_State(E_Created) |
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{ |
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} |
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|
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IsoHandler::IsoHandler(IsoHandlerManager& manager, unsigned int buf_packets, unsigned int max_packet_size, int irq) |
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: m_manager(manager) |
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, m_handle(0) |
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, m_buf_packets(buf_packets) |
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, m_max_packet_size( max_packet_size) |
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, m_irq_interval(irq) |
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, m_packetcount(0) |
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, m_dropped(0) |
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, m_Client(0) |
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, m_State(E_Created) |
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{ |
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} |
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|
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IsoHandler::~IsoHandler() { |
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// Don't call until libraw1394's raw1394_new_handle() function has been |
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// fixed to correctly initialise the iso_packet_infos field. Bug is |
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// confirmed present in libraw1394 1.2.1. In any case, |
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// raw1394_destroy_handle() will do any iso system shutdown required. |
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// raw1394_iso_shutdown(m_handle); |
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if(m_handle) { |
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if (m_State == E_Running) { |
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disable(); |
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} |
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raw1394_destroy_handle(m_handle); |
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} |
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} |
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bool IsoHandler::iterate() { |
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debugOutput( DEBUG_LEVEL_VERY_VERBOSE, "IsoHandler (%p) iterate...\n",this); |
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if(m_handle) { |
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if(raw1394_loop_iterate(m_handle)) { |
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debugOutput( DEBUG_LEVEL_VERBOSE, |
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"IsoHandler (%p): Failed to iterate handler: %s\n", |
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this,strerror(errno)); |
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return false; |
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} else { |
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return true; |
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} |
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} else { |
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return false; |
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} |
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} |
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bool |
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IsoHandler::init() |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "IsoHandler (%p) enter...\n",this); |
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// check the state |
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if(m_State != E_Created) { |
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debugError("Incorrect state, expected E_Created, got %d\n",(int)m_State); |
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return false; |
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} |
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// the main handle for the ISO traffic |
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m_handle = raw1394_new_handle_on_port( m_manager.get1394Service().getPort() ); |
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if ( !m_handle ) { |
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if ( !errno ) { |
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debugError("libraw1394 not compatible\n"); |
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} else { |
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debugError("Could not get 1394 handle: %s\n", strerror(errno) ); |
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debugError("Are ieee1394 and raw1394 drivers loaded?\n"); |
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} |
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return false; |
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} |
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raw1394_set_userdata(m_handle, static_cast<void *>(this)); |
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|
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// bus reset handling |
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if(raw1394_busreset_notify (m_handle, RAW1394_NOTIFY_ON)) { |
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debugWarning("Could not enable busreset notification.\n"); |
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debugWarning(" Error message: %s\n",strerror(errno)); |
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debugWarning("Continuing without bus reset support.\n"); |
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} else { |
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// apparently this cannot fail |
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raw1394_set_bus_reset_handler(m_handle, busreset_handler); |
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} |
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// update the internal state |
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m_State=E_Initialized; |
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return true; |
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} |
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|
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bool IsoHandler::prepare() |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "IsoHandler (%p) prepare...\n", this); |
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// check the state |
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if(m_State != E_Initialized) { |
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debugError("Incorrect state, expected E_Initialized, got %d\n",(int)m_State); |
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return false; |
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} |
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// Don't call until libraw1394's raw1394_new_handle() function has been |
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// fixed to correctly initialise the iso_packet_infos field. Bug is |
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// confirmed present in libraw1394 1.2.1. |
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// raw1394_iso_shutdown(m_handle); |
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m_State = E_Prepared; |
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return true; |
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} |
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bool IsoHandler::enable(int cycle) |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
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m_State = E_Running; |
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return true; |
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} |
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bool IsoHandler::disable() |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
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// check state |
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if(m_State == E_Prepared) return true; |
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if(m_State != E_Running) { |
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debugError("Incorrect state, expected E_Running, got %d\n",(int)m_State); |
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return false; |
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} |
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// this is put here to try and avoid the |
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// Runaway context problem |
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// don't know if it will help though. |
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raw1394_iso_xmit_sync(m_handle); |
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raw1394_iso_stop(m_handle); |
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m_State = E_Prepared; |
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return true; |
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} |
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|
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/** |
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* Bus reset handler |
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* |
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* @return ? |
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*/ |
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int IsoHandler::handleBusReset(unsigned int generation) { |
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debugOutput( DEBUG_LEVEL_VERBOSE, "bus reset...\n"); |
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#define CSR_CYCLE_TIME 0x200 |
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#define CSR_REGISTER_BASE 0xfffff0000000ULL |
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// do a simple read on ourself in order to update the internal structures |
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// this avoids read failures after a bus reset |
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quadlet_t buf=0; |
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raw1394_read(m_handle, raw1394_get_local_id(m_handle), |
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CSR_REGISTER_BASE | CSR_CYCLE_TIME, 4, &buf); |
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return 0; |
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} |
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void IsoHandler::dumpInfo() |
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{ |
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int channel=-1; |
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if (m_Client) channel=m_Client->getChannel(); |
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|
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Handler type................: %s\n", |
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(this->getType()==EHT_Receive ? "Receive" : "Transmit")); |
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Port, Channel...............: %2d, %2d\n", |
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m_manager.get1394Service().getPort(), channel); |
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Buffer, MaxPacketSize, IRQ..: %4d, %4d, %4d\n", |
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m_buf_packets, m_max_packet_size, m_irq_interval); |
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Packet count................: %10d (%5d dropped)\n", |
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this->getPacketCount(), this->getDroppedCount()); |
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} |
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void IsoHandler::setVerboseLevel(int l) |
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{ |
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setDebugLevel(l); |
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} |
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|
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bool IsoHandler::registerStream(StreamProcessor *stream) |
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{ |
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assert(stream); |
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debugOutput( DEBUG_LEVEL_VERBOSE, "registering stream (%p)\n", stream); |
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if (m_Client) { |
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debugFatal( "Generic IsoHandlers can have only one client\n"); |
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return false; |
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} |
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m_Client=stream; |
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return true; |
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} |
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bool IsoHandler::unregisterStream(StreamProcessor *stream) |
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{ |
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assert(stream); |
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debugOutput( DEBUG_LEVEL_VERBOSE, "unregistering stream (%p)\n", stream); |
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if(stream != m_Client) { |
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debugFatal( "no client registered\n"); |
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return false; |
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} |
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m_Client=0; |
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return true; |
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} |
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|
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/* Child class implementations */ |
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|
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IsoRecvHandler::IsoRecvHandler(IsoHandlerManager& manager) |
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: IsoHandler(manager) |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
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} |
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IsoRecvHandler::IsoRecvHandler(IsoHandlerManager& manager, unsigned int buf_packets, |
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unsigned int max_packet_size, int irq) |
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: IsoHandler(manager, buf_packets,max_packet_size,irq) |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
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|
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} |
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IsoRecvHandler::~IsoRecvHandler() |
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{ |
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|
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} |
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void IsoRecvHandler::flush() |
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{ |
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raw1394_iso_recv_flush(m_handle); |
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} |
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|
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bool |
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IsoRecvHandler::init() { |
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debugOutput( DEBUG_LEVEL_VERBOSE, "init recv handler %p\n",this); |
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|
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if(!(IsoHandler::init())) { |
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return false; |
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} |
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return true; |
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|
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} |
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|
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enum raw1394_iso_disposition IsoRecvHandler::putPacket( |
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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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|
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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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m_packetcount++; |
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m_dropped+=dropped; |
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|
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if(m_Client) { |
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return m_Client->putPacket(data, length, channel, tag, sy, cycle, dropped); |
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} |
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return RAW1394_ISO_OK; |
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} |
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|
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bool IsoRecvHandler::prepare() |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "Preparing iso receive handler (%p, client=%p)\n", this, m_Client); |
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// prepare the generic IsoHandler |
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if(!IsoHandler::prepare()) { |
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return false; |
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} |
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debugOutput( DEBUG_LEVEL_VERBOSE, "Preparing iso receive handler (%p)\n",this); |
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debugOutput( DEBUG_LEVEL_VERBOSE, " Buffers : %d \n", m_buf_packets); |
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debugOutput( DEBUG_LEVEL_VERBOSE, " Max Packet size : %d \n", m_max_packet_size); |
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debugOutput( DEBUG_LEVEL_VERBOSE, " Channel : %d \n", m_Client->getChannel()); |
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debugOutput( DEBUG_LEVEL_VERBOSE, " Irq interval : %d \n", m_irq_interval); |
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debugOutput( DEBUG_LEVEL_VERBOSE, " Mode : %s \n", |
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(m_irq_interval > 1)?"DMA_BUFFERFILL":"PACKET_PER_BUFFER"); |
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|
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if(m_irq_interval > 1) { |
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if(raw1394_iso_recv_init(m_handle, |
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iso_receive_handler, |
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m_buf_packets, |
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m_max_packet_size, |
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m_Client->getChannel(), |
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RAW1394_DMA_BUFFERFILL, |
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m_irq_interval)) { |
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debugFatal("Could not do receive initialisation!\n" ); |
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debugFatal(" %s\n",strerror(errno)); |
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|
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return false; |
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} |
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} else { |
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if(raw1394_iso_recv_init(m_handle, |
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iso_receive_handler, |
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m_buf_packets, |
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m_max_packet_size, |
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m_Client->getChannel(), |
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RAW1394_DMA_PACKET_PER_BUFFER, |
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m_irq_interval)) { |
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debugFatal("Could not do receive initialisation!\n" ); |
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debugFatal(" %s\n",strerror(errno)); |
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|
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return false; |
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} |
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} |
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return true; |
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} |
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|
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bool IsoRecvHandler::enable(int cycle) |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "start on cycle %d\n", cycle); |
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// check the state |
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if(m_State != E_Prepared) { |
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if(!prepare()) { |
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debugFatal("Could not prepare recv handler\n"); |
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return false; |
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} |
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} |
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if(raw1394_iso_recv_start(m_handle, cycle, -1, 0)) { |
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debugFatal("Could not start receive handler (%s)\n",strerror(errno)); |
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dumpInfo(); |
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return false; |
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} |
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// start the generic IsoHandler |
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if(!IsoHandler::enable(cycle)) { |
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return false; |
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} |
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return true; |
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} |
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|
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int IsoRecvHandler::handleBusReset(unsigned int generation) { |
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debugOutput( DEBUG_LEVEL_VERBOSE, "handle bus reset...\n"); |
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|
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//TODO: implement busreset |
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|
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// pass on the busreset signal |
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if(IsoHandler::handleBusReset(generation)) { |
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return -1; |
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} |
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return 0; |
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} |
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|
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/* ----------------- XMIT --------------- */ |
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414 |
|
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IsoXmitHandler::IsoXmitHandler(IsoHandlerManager& manager) |
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: IsoHandler(manager), m_prebuffers(0) |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "IsoXmitHandler enter...\n"); |
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|
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} |
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IsoXmitHandler::IsoXmitHandler(IsoHandlerManager& manager, unsigned int buf_packets, |
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unsigned int max_packet_size, int irq) |
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: IsoHandler(manager, buf_packets, max_packet_size,irq), |
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m_speed(RAW1394_ISO_SPEED_400), m_prebuffers(0) |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "IsoXmitHandler enter...\n"); |
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427 |
|
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} |
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IsoXmitHandler::IsoXmitHandler(IsoHandlerManager& manager, unsigned int buf_packets, |
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430 |
unsigned int max_packet_size, int irq, |
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431 |
enum raw1394_iso_speed speed) |
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: IsoHandler(manager, buf_packets,max_packet_size,irq), |
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m_speed(speed), m_prebuffers(0) |
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{ |
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435 |
debugOutput( DEBUG_LEVEL_VERBOSE, "IsoXmitHandler enter...\n"); |
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436 |
|
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437 |
} |
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438 |
|
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439 |
IsoXmitHandler::~IsoXmitHandler() |
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440 |
{ |
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441 |
// handle cleanup is done in the IsoHanlder destructor |
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442 |
} |
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443 |
|
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bool |
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445 |
IsoXmitHandler::init() { |
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446 |
|
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447 |
debugOutput( DEBUG_LEVEL_VERBOSE, "init xmit handler %p\n",this); |
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448 |
|
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449 |
if(!(IsoHandler::init())) { |
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450 |
return false; |
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451 |
} |
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452 |
|
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453 |
return true; |
---|
454 |
} |
---|
455 |
|
---|
456 |
bool IsoXmitHandler::prepare() |
---|
457 |
{ |
---|
458 |
debugOutput( DEBUG_LEVEL_VERBOSE, "Preparing iso transmit handler (%p, client=%p)\n", this, m_Client); |
---|
459 |
if(!(IsoHandler::prepare())) { |
---|
460 |
return false; |
---|
461 |
} |
---|
462 |
|
---|
463 |
debugOutput( DEBUG_LEVEL_VERBOSE, " Buffers : %d \n",m_buf_packets); |
---|
464 |
debugOutput( DEBUG_LEVEL_VERBOSE, " Max Packet size : %d \n",m_max_packet_size); |
---|
465 |
debugOutput( DEBUG_LEVEL_VERBOSE, " Channel : %d \n",m_Client->getChannel()); |
---|
466 |
debugOutput( DEBUG_LEVEL_VERBOSE, " Speed : %d \n",m_speed); |
---|
467 |
debugOutput( DEBUG_LEVEL_VERBOSE, " Irq interval : %d \n",m_irq_interval); |
---|
468 |
if(raw1394_iso_xmit_init(m_handle, |
---|
469 |
iso_transmit_handler, |
---|
470 |
m_buf_packets, |
---|
471 |
m_max_packet_size, |
---|
472 |
m_Client->getChannel(), |
---|
473 |
m_speed, |
---|
474 |
m_irq_interval)) { |
---|
475 |
debugFatal("Could not do xmit initialisation!\n" ); |
---|
476 |
|
---|
477 |
return false; |
---|
478 |
} |
---|
479 |
return true; |
---|
480 |
} |
---|
481 |
|
---|
482 |
bool IsoXmitHandler::enable(int cycle) |
---|
483 |
{ |
---|
484 |
debugOutput( DEBUG_LEVEL_VERBOSE, "start on cycle %d, %d prebuffers\n", |
---|
485 |
cycle, m_prebuffers); |
---|
486 |
// check the state |
---|
487 |
if(m_State != E_Prepared) { |
---|
488 |
if(!prepare()) { |
---|
489 |
debugFatal("Could not prepare xmit handler\n"); |
---|
490 |
return false; |
---|
491 |
} |
---|
492 |
} |
---|
493 |
if(raw1394_iso_xmit_start(m_handle, cycle, m_prebuffers)) { |
---|
494 |
debugFatal("Could not start xmit handler (%s)\n",strerror(errno)); |
---|
495 |
dumpInfo(); |
---|
496 |
return false; |
---|
497 |
} |
---|
498 |
if(!(IsoHandler::enable(cycle))) { |
---|
499 |
return false; |
---|
500 |
} |
---|
501 |
return true; |
---|
502 |
} |
---|
503 |
|
---|
504 |
enum raw1394_iso_disposition IsoXmitHandler::getPacket( |
---|
505 |
unsigned char *data, unsigned int *length, |
---|
506 |
unsigned char *tag, unsigned char *sy, |
---|
507 |
int cycle, unsigned int dropped) { |
---|
508 |
|
---|
509 |
debugOutput( DEBUG_LEVEL_VERY_VERBOSE, |
---|
510 |
"sending packet: length=%d, cycle=%d\n", |
---|
511 |
*length, cycle ); |
---|
512 |
m_packetcount++; |
---|
513 |
m_dropped+=dropped; |
---|
514 |
|
---|
515 |
if(m_Client) { |
---|
516 |
return m_Client->getPacket(data, length, tag, sy, cycle, dropped, m_max_packet_size); |
---|
517 |
} |
---|
518 |
return RAW1394_ISO_OK; |
---|
519 |
} |
---|
520 |
|
---|
521 |
int IsoXmitHandler::handleBusReset(unsigned int generation) { |
---|
522 |
debugOutput( DEBUG_LEVEL_VERBOSE, "bus reset...\n"); |
---|
523 |
//TODO: implement busreset |
---|
524 |
// pass on the busreset signal |
---|
525 |
if(IsoHandler::handleBusReset(generation)) { |
---|
526 |
return -1; |
---|
527 |
} |
---|
528 |
return 0; |
---|
529 |
} |
---|
530 |
|
---|
531 |
void IsoXmitHandler::dumpInfo() |
---|
532 |
{ |
---|
533 |
IsoHandler::dumpInfo(); |
---|
534 |
debugOutputShort( DEBUG_LEVEL_NORMAL, " Speed, PreBuffers...........: %2d, %2d\n", |
---|
535 |
m_speed, m_prebuffers); |
---|
536 |
} |
---|