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Diffstat (limited to 'Src/Multiplexer/ThreadReadHdd.h')
| -rw-r--r-- | Src/Multiplexer/ThreadReadHdd.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/Src/Multiplexer/ThreadReadHdd.h b/Src/Multiplexer/ThreadReadHdd.h new file mode 100644 index 0000000..74996fd --- /dev/null +++ b/Src/Multiplexer/ThreadReadHdd.h @@ -0,0 +1,171 @@ +/* + * Video On Demand Samples + * + * Copyright (C) 2015 Microchip Technology Germany II GmbH & Co. KG + * + * 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 3 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, see <http://www.gnu.org/licenses/>. + * + * You may also obtain this software under a propriety license from Microchip. + * Please contact Microchip for further information. + * + */ + +/*----------------------------------------------------------*/ +/*! \file + * \brief This file contains the CThreadReadHdd class. + */ +/*----------------------------------------------------------*/ +#ifndef THREADREADHDD_H +#define THREADREADHDD_H + +#include <unistd.h> +#include "SafeVector.h" +#include <pthread.h> +#include <assert.h> +#include "Console.h" +#include "StreamList.h" + + + +/*----------------------------------------------------------*/ +/*! \brief Class creating a thread to call stream's reading function. + */ +/*----------------------------------------------------------*/ +class CThreadReadHdd +{ +private: + pthread_t m_hThread; + bool m_bRunning; + CStreamList *m_StreamList; + +public: + + CThreadReadHdd() : m_hThread(0), m_bRunning(false), m_StreamList(NULL) + { + } + + + /*----------------------------------------------------------*/ + /*! \brief thread reading from all stream lists + */ + /*----------------------------------------------------------*/ + static void *Run(void *pInst) + { + assert(NULL != pInst); + + CThreadReadHdd *that = (CThreadReadHdd *)pInst; + /* set thread to max priority: */ + int ret; + pthread_t this_thread = pthread_self(); + struct sched_param params; + params.sched_priority = sched_get_priority_max(SCHED_FIFO); + ret = pthread_setschedparam(this_thread, SCHED_FIFO, ¶ms); + if (ret != 0) { + ConsolePrintf( PRIO_ERROR, "ThreadReadHdd_setschedparam(SCHED_FIFO) failed\n"); + } + // Now verify the change in thread priority + int policy = 0; + ret = pthread_getschedparam(this_thread, &policy, ¶ms); + if (ret != 0) { + ConsolePrintf( PRIO_ERROR, "ThreadReadHdd_getschedparam() failed\n"); + } + + while (that->m_bRunning) + { + if ( !that->m_StreamList->ReadHdd() ) // buffer full? + usleep(50000); // we have 300ms buffer size, so it's save to sleep 50ms + } + pthread_exit(0); + } + + + + + /*----------------------------------------------------------*/ + /*! \brief start reading thread + */ + /*----------------------------------------------------------*/ + void Start() + { + if ( m_bRunning ) + return; + + if ( NULL == m_StreamList ) + return; + + struct sched_param param; + pthread_attr_t tattr; + pthread_attr_init(&tattr); + pthread_attr_getschedparam(&tattr, ¶m); + pthread_attr_setschedpolicy(&tattr, SCHED_RR); + param.sched_priority = sched_get_priority_max(SCHED_RR); + pthread_attr_setschedparam(&tattr, ¶m); + m_bRunning = true; + if ( 0 != pthread_create(&m_hThread, &tattr, Run, this) ) + ConsolePrintf( PRIO_ERROR, RED"! failed to create thread"RESETCOLOR"\n"); + } + + + + + /*----------------------------------------------------------*/ + /*! \brief stop reading thread + */ + /*----------------------------------------------------------*/ + void Stop() + { + if ( m_bRunning ) + { + m_bRunning = false; + void *pVal; + pthread_join(m_hThread, &pVal); + m_hThread = 0; + } + } + +public: + /*----------------------------------------------------------*/ + /*! \brief add a stream list to read thread + * \param StreamList - stream list to add for reading + * \return true, if stream list was added successfully + */ + /*----------------------------------------------------------*/ + void AddStreamList(CStreamList *streamList) + { + Stop(); + m_StreamList = streamList; + Start(); + } + + + + + /*----------------------------------------------------------*/ + /*! \brief remove a stream list from read thread + */ + /*----------------------------------------------------------*/ + void RemoveStreamList(CStreamList *streamList) + { + Stop(); + m_StreamList = NULL; + } +}; + + + + + + +#endif + |