omx/mm-video/qdsp6/vdec/src/omx_vdec_linux.cpp

/*--------------------------------------------------------------------------
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      notice, this list of conditions and the following disclaimer in the
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      the names of its contributors may be used to endorse or promote
      products derived from this software without specific prior written
      permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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/*============================================================================
                            O p e n M A X   w r a p p e r s
                             O p e n  M A X   C o r e

*//** @file omx_vdec.c
  This module contains the implementation of the OpenMAX core & component.

*//*========================================================================*/


//////////////////////////////////////////////////////////////////////////////
//                             Include Files
//////////////////////////////////////////////////////////////////////////////

#include "omx_vdec_linux.h"
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

void *get_omx_component_factory_fn(void)
{
   return (new omx_vdec_linux);
}

void *message_thread(void *input)
{
   unsigned char id;
   int n;
   omx_vdec_linux *omx = reinterpret_cast < omx_vdec_linux * >(input);
   QTV_MSG_PRIO(QTVDIAG_GENERAL, QTVDIAG_PRIO_MED,
           "omx_vdec: message thread start\n");
   while (1) {
      n = read(omx->m_pipe_in, &id, 1);
      if (0 == n)
         break;
      if (1 == n) {
         omx->process_event_cb(&(omx->m_vdec_cfg), id);
      }
#ifdef QLE_BUILD
      if (n < 0)
         break;
#else
      if ((n < 0) && (errno != EINTR))
         break;
#endif
   }
   QTV_MSG_PRIO(QTVDIAG_GENERAL, QTVDIAG_PRIO_MED,
           "omx_vdec: message thread stop\n");
   return 0;
}

omx_vdec_linux::omx_vdec_linux()
{
   m_pipe_in = -1;
   m_pipe_out = -1;
   is_thread_created = false;
   pthread_mutexattr_init(&m_lock_attr);
   pthread_mutex_init(&m_lock, &m_lock_attr);
   sem_init(&m_cmd_lock, 0, 0);
}

omx_vdec_linux::~omx_vdec_linux()
{
   if (m_pipe_in) {
      close(m_pipe_in);
      m_pipe_in = -1;
   }

   if (m_pipe_out) {
      close(m_pipe_out);
      m_pipe_out = -1;
   }
   if (is_thread_created) {
      pthread_join(msg_thread_id,NULL);
      is_thread_created = false;
   }

   pthread_mutexattr_destroy(&m_lock_attr);
   pthread_mutex_destroy(&m_lock);
   sem_destroy(&m_cmd_lock);
}

OMX_ERRORTYPE omx_vdec_linux::create_msg_thread()
{
   int fds[2];
   OMX_ERRORTYPE eRet = OMX_ErrorNone;
   if (fds == NULL || pipe(fds)) {
      //QTV_MSG_PRIO(QTVDIAG_GENERAL,QTVDIAG_PRIO_MED,"pipe creation failed\n");
      eRet = OMX_ErrorInsufficientResources;
   } else {
      m_pipe_in = fds[0];
      m_pipe_out = fds[1];
      if (fcntl(m_pipe_out, F_SETFL, O_NONBLOCK) == -1) {
         QTV_MSG_PRIO(QTVDIAG_GENERAL, QTVDIAG_PRIO_ERROR,
                 "Error - Set pipe out to NONBLOCK is failed\n");
      }
      if (pthread_create(&msg_thread_id, 0, message_thread, this) < 0)
         eRet = OMX_ErrorInsufficientResources;
   }
   if (eRet == OMX_ErrorNone)
	   is_thread_created = true;
   return eRet;
}

void omx_vdec_linux::post_message(unsigned char id)
{
   QTV_MSG_PRIO1(QTVDIAG_GENERAL, QTVDIAG_PRIO_MED,
            "omx_vdec: post_message %d\n", id);
   int eRet = 0;

   eRet = write(m_pipe_out, &id, 1);

   if (eRet == -1) {
      QTV_MSG_PRIO2(QTVDIAG_GENERAL, QTVDIAG_PRIO_MED,
               "errno %d - %s\n", errno, strerror(errno));
   }

}

void omx_vdec_linux::mutex_lock()
{
   pthread_mutex_lock(&m_lock);
}

void omx_vdec_linux::mutex_unlock()
{
   pthread_mutex_unlock(&m_lock);
}

void omx_vdec_linux::semaphore_wait()
{
   sem_wait(&m_cmd_lock);
}

void omx_vdec_linux::semaphore_post()
{
   sem_post(&m_cmd_lock);
}