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/*
* encoder-common.c -- asynchronous encoder runtime control and statistics.
*
* Copyright (C) Thomas Oestreich - June 2001
* Updated and partially rewritten by
* Francesco Romani - January 2006
*
* This file is part of transcode, a video stream processing tool
*
* transcode 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 2, or (at your option)
* any later version.
*
* transcode 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdint.h>
#include <unistd.h>
#include <pthread.h>
#include "libtc/libtc.h"
#include "encoder-common.h"
#include "tc_defaults.h"
/* volatile: for threadness paranoia */
static int pause_flag = 0;
void tc_pause_request(void)
{
pause_flag = !pause_flag;
}
void tc_pause(void)
{
while (pause_flag) {
usleep(TC_DELAY_MIN);
}
}
/* counter, for stats and more */
static uint32_t frames_encoded = 0;
static uint32_t frames_dropped = 0;
static uint32_t frames_skipped = 0;
static uint32_t frames_cloned = 0;
/* counters can be accessed by other (ex: import) threads */
static pthread_mutex_t frame_counter_lock = PTHREAD_MUTEX_INITIALIZER;
uint32_t tc_get_frames_encoded(void)
{
uint32_t val;
pthread_mutex_lock(&frame_counter_lock);
val = frames_encoded;
pthread_mutex_unlock(&frame_counter_lock);
return val;
}
void tc_update_frames_encoded(uint32_t val)
{
pthread_mutex_lock(&frame_counter_lock);
frames_encoded += val;
pthread_mutex_unlock(&frame_counter_lock);
}
uint32_t tc_get_frames_dropped(void)
{
uint32_t val;
pthread_mutex_lock(&frame_counter_lock);
val = frames_dropped;
pthread_mutex_unlock(&frame_counter_lock);
return val;
}
void tc_update_frames_dropped(uint32_t val)
{
pthread_mutex_lock(&frame_counter_lock);
frames_dropped += val;
pthread_mutex_unlock(&frame_counter_lock);
}
uint32_t tc_get_frames_skipped(void)
{
uint32_t val;
pthread_mutex_lock(&frame_counter_lock);
val = frames_skipped;
pthread_mutex_unlock(&frame_counter_lock);
return val;
}
void tc_update_frames_skipped(uint32_t val)
{
pthread_mutex_lock(&frame_counter_lock);
frames_skipped += val;
pthread_mutex_unlock(&frame_counter_lock);
}
uint32_t tc_get_frames_cloned(void)
{
uint32_t val;
pthread_mutex_lock(&frame_counter_lock);
val = frames_cloned;
pthread_mutex_unlock(&frame_counter_lock);
return val;
}
void tc_update_frames_cloned(uint32_t val)
{
pthread_mutex_lock(&frame_counter_lock);
frames_cloned += val;
pthread_mutex_unlock(&frame_counter_lock);
}
uint32_t tc_get_frames_skipped_cloned(void)
{
uint32_t s, c;
pthread_mutex_lock(&frame_counter_lock);
s = frames_skipped;
c = frames_cloned;
pthread_mutex_unlock(&frame_counter_lock);
return (c - s);
}
/*************************************************************************/
pthread_mutex_t run_status_lock = PTHREAD_MUTEX_INITIALIZER;
static volatile int tc_run_status = TC_STATUS_RUNNING;
/* `volatile' is for threading paranoia */
static TCRunStatus tc_get_run_status(void)
{
TCRunStatus rs;
pthread_mutex_lock(&run_status_lock);
rs = tc_run_status;
pthread_mutex_unlock(&run_status_lock);
return rs;
}
int tc_interrupted(void)
{
return (TC_STATUS_INTERRUPTED == tc_get_run_status());
}
int tc_stopped(void)
{
return (TC_STATUS_STOPPED == tc_get_run_status());
}
int tc_running(void)
{
return (TC_STATUS_RUNNING == tc_get_run_status());
}
void tc_start(void)
{
pthread_mutex_lock(&run_status_lock);
tc_run_status = TC_STATUS_RUNNING;
pthread_mutex_unlock(&run_status_lock);
}
void tc_stop(void)
{
pthread_mutex_lock(&run_status_lock);
/* no preemption, be polite */
if (tc_run_status == TC_STATUS_RUNNING) {
tc_run_status = TC_STATUS_STOPPED;
}
pthread_mutex_unlock(&run_status_lock);
}
void tc_interrupt(void)
{
pthread_mutex_lock(&run_status_lock);
/* preempt and don't care of politeness. */
if (tc_run_status != TC_STATUS_INTERRUPTED) {
tc_run_status = TC_STATUS_INTERRUPTED;
}
pthread_mutex_unlock(&run_status_lock);
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/
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