void x264_lookahead_put_frame( x264_t *h, x264_frame_t *frame )
{
if( h->param.i_sync_lookahead )
x264_sync_frame_list_push( &h->lookahead->ifbuf, frame );
else
x264_sync_frame_list_push( &h->lookahead->next, frame );
}
int x264_threadpool_init( x264_threadpool_t **p_pool, int threads,
void (*init_func)(void *), void *init_arg )
{
if( threads <= 0 )
return -1;
x264_threadpool_t *pool;
CHECKED_MALLOCZERO( pool, sizeof(x264_threadpool_t) );
*p_pool = pool;
pool->init_func = init_func;
pool->init_arg = init_arg;
pool->threads = threads;
CHECKED_MALLOC( pool->thread_handle, pool->threads * sizeof(x264_pthread_t) );
if( x264_sync_frame_list_init( &pool->uninit, pool->threads ) ||
x264_sync_frame_list_init( &pool->run, pool->threads ) ||
x264_sync_frame_list_init( &pool->done, pool->threads ) )
goto fail;
for( int i = 0; i < pool->threads; i++ )
{
x264_threadpool_job_t *job;
CHECKED_MALLOC( job, sizeof(x264_threadpool_job_t) );
x264_sync_frame_list_push( &pool->uninit, (void*)job );
}
for( int i = 0; i < pool->threads; i++ )
if( x264_pthread_create( pool->thread_handle+i, NULL, (void*)x264_threadpool_thread, pool ) )
goto fail;
return 0;
fail:
return -1;
}
void *x264_threadpool_wait( x264_threadpool_t *pool, void *arg )
{
x264_threadpool_job_t *job = NULL;
x264_pthread_mutex_lock( &pool->done.mutex );
while( !job )
{
for( int i = 0; i < pool->done.i_size; i++ )
{
x264_threadpool_job_t *t = (void*)pool->done.list[i];
if( t->arg == arg )
{
job = (void*)x264_frame_shift( pool->done.list+i );
pool->done.i_size--;
}
}
if( !job )
x264_pthread_cond_wait( &pool->done.cv_fill, &pool->done.mutex );
}
x264_pthread_mutex_unlock( &pool->done.mutex );
void *ret = job->ret;
x264_sync_frame_list_push( &pool->uninit, (void*)job );
return ret;
}
void x264_threadpool_run( x264_threadpool_t *pool, void *(*func)(void *), void *arg )
{
x264_threadpool_job_t *job = (void*)x264_sync_frame_list_pop( &pool->uninit );
job->func = func;
job->arg = arg;
x264_sync_frame_list_push( &pool->run, (void*)job );
}
static void x264_threadpool_thread( x264_threadpool_t *pool )
{
if( pool->init_func )
pool->init_func( pool->init_arg );
while( !pool->exit )
{
x264_threadpool_job_t *job = NULL;
x264_pthread_mutex_lock( &pool->run.mutex );
while( !pool->exit && !pool->run.i_size )
x264_pthread_cond_wait( &pool->run.cv_fill, &pool->run.mutex );
if( pool->run.i_size )
{
job = (void*)x264_frame_shift( pool->run.list );
pool->run.i_size--;
}
x264_pthread_mutex_unlock( &pool->run.mutex );
if( !job )
continue;
job->ret = job->func( job->arg ); /* execute the function */
x264_sync_frame_list_push( &pool->done, (void*)job );
}
}
