| /*-------------------------------------------------------------------------- |
| Copyright (c) 2010, Code Aurora Forum. All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| * Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| * Neither the name of Code Aurora nor |
| the names of its contributors may be used to endorse or promote |
| products derived from this software without specific prior written |
| permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| --------------------------------------------------------------------------*/ |
| |
| /*======================================================================== |
| Include Files |
| ==========================================================================*/ |
| #include "venc_signal.h" |
| #include "venc_debug.h" |
| #include <time.h> |
| #include <pthread.h> |
| #include <errno.h> |
| |
| #ifdef TRUE |
| #undef TRUE |
| #endif |
| |
| #ifdef FALSE |
| #undef FALSE |
| #endif |
| |
| #define TRUE 1 /* Boolean true value. */ |
| #define FALSE 0 /* Boolean false value. */ |
| |
| typedef struct venc_signal_type |
| { |
| pthread_cond_t cond; |
| pthread_mutex_t mutex; |
| unsigned char m_bSignalSet ; |
| } venc_signal_type; |
| |
| |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| ///////////////////////////////////////////////////////////////////////////// |
| int venc_signal_create(void** handle) |
| { |
| int result = 0; |
| |
| if (handle) |
| { |
| venc_signal_type* sig; |
| |
| *handle = malloc(sizeof(venc_signal_type)); |
| sig = (venc_signal_type*) *handle; |
| sig->m_bSignalSet = FALSE ; |
| if (*handle) |
| { |
| if (pthread_cond_init(&sig->cond,NULL) == 0) |
| { |
| if (pthread_mutex_init(&sig->mutex, NULL) != 0) |
| { |
| VENC_MSG_ERROR("failed to create mutex"); |
| result = 1; |
| pthread_cond_destroy(&sig->cond); |
| free(*handle); |
| } |
| } |
| else |
| { |
| VENC_MSG_ERROR("failed to create cond var"); |
| result = 1; |
| free(*handle); |
| } |
| } |
| else |
| { |
| VENC_MSG_ERROR("failed to alloc handle"); |
| result = 1; |
| } |
| } |
| else |
| { |
| VENC_MSG_ERROR("handle is null"); |
| result = 1; |
| } |
| |
| return result; |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| ///////////////////////////////////////////////////////////////////////////// |
| int venc_signal_destroy(void* handle) |
| { |
| int result = 0; |
| |
| if (handle) |
| { |
| venc_signal_type* sig = (venc_signal_type*) handle; |
| sig->m_bSignalSet = FALSE ; |
| pthread_cond_destroy(&sig->cond); |
| pthread_mutex_destroy(&sig->mutex); |
| free(handle); |
| } |
| else |
| { |
| VENC_MSG_ERROR("handle is null"); |
| result = 1; |
| } |
| |
| return result; |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| ///////////////////////////////////////////////////////////////////////////// |
| int venc_signal_set(void* handle) |
| { |
| int result = 0; |
| |
| if (handle) |
| { |
| venc_signal_type* sig = (venc_signal_type*) handle; |
| |
| if (pthread_mutex_lock(&sig->mutex) == 0) |
| { |
| sig->m_bSignalSet = TRUE ; |
| if (pthread_cond_signal(&sig->cond) != 0) |
| { |
| VENC_MSG_ERROR("error setting signal"); |
| result = 1; |
| } |
| |
| if (pthread_mutex_unlock(&sig->mutex) != 0) |
| { |
| VENC_MSG_ERROR("error unlocking mutex"); |
| result = 1; |
| } |
| } |
| else |
| { |
| VENC_MSG_ERROR("error locking mutex"); |
| result = 1; |
| } |
| } |
| else |
| { |
| VENC_MSG_ERROR("handle is null"); |
| result = 1; |
| } |
| |
| return result; |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| ///////////////////////////////////////////////////////////////////////////// |
| int venc_signal_wait(void* handle, int timeout) |
| { |
| int result = 0; |
| |
| if (handle) |
| { |
| venc_signal_type* sig = (venc_signal_type*) handle; |
| |
| if (pthread_mutex_lock(&sig->mutex) == 0) |
| { |
| |
| if (timeout > 0) |
| { |
| int wait_result; |
| struct timespec time; |
| clock_gettime(CLOCK_REALTIME, &time); |
| time.tv_sec += timeout / 1000; |
| time.tv_nsec += (timeout % 1000) * 1000000; |
| |
| wait_result = pthread_cond_timedwait(&sig->cond, &sig->mutex, &time); |
| if (wait_result == ETIMEDOUT) |
| { |
| result = 2; |
| } |
| else if (wait_result != 0) |
| { |
| result = 1; |
| } |
| } |
| else |
| { |
| if(sig->m_bSignalSet == TRUE) |
| { |
| struct timespec time; |
| timeout = 1 ; |
| clock_gettime(CLOCK_REALTIME, &time); |
| time.tv_sec += timeout / 1000; |
| time.tv_nsec += (timeout % 1000) * 1000000; |
| VENC_MSG_MEDIUM("error waiting for signal but its already set"); |
| pthread_cond_timedwait(&sig->cond, &sig->mutex, &time) ; |
| sig->m_bSignalSet = FALSE ; |
| } |
| else |
| { |
| if (pthread_cond_wait(&sig->cond, &sig->mutex) != 0) |
| { |
| VENC_MSG_ERROR("error waiting for signal"); |
| result = 1; |
| } |
| sig->m_bSignalSet = FALSE ; |
| } |
| } |
| |
| if (pthread_mutex_unlock(&sig->mutex) != 0) |
| { |
| VENC_MSG_ERROR("error unlocking mutex"); |
| result = 1; |
| } |
| |
| } |
| else |
| { |
| VENC_MSG_ERROR("error locking mutex"); |
| result = 1; |
| } |
| } |
| else |
| { |
| VENC_MSG_ERROR("handle is null"); |
| result = 1; |
| } |
| |
| return result; |
| } |