diff options
Diffstat (limited to 'src/rmd_timer.c')
| -rw-r--r-- | src/rmd_timer.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/src/rmd_timer.c b/src/rmd_timer.c deleted file mode 100644 index 8b2e076..0000000 --- a/src/rmd_timer.c +++ /dev/null @@ -1,145 +0,0 @@ -/****************************************************************************** -* recordMyDesktop * -******************************************************************************* -* * -* Copyright (C) 2006,2007,2008 John Varouhakis * -* * -* * -* 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 2 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, write to the Free Software * -* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * -* * -* * -* * -* For further information contact me at johnvarouhakis@gmail.com * -******************************************************************************/ - -#include "config.h" -#include "rmd_timer.h" - -#include "rmd_threads.h" -#include "rmd_types.h" - -#include <pthread.h> - -#include <stdio.h> -#include <stdlib.h> -#include <errno.h> -#include <time.h> -#include <unistd.h> - - -static struct timespec us_to_timespec(unsigned int us) -{ - return (struct timespec){ - .tv_sec = us / 1000000, - .tv_nsec = (us % 1000000) * 1000, - }; -} - -static void sync_streams(ProgData *pdata, unsigned int *frame_step, struct timespec *delay) -{ - int avd; - - pthread_mutex_lock(&pdata->avd_mutex); - avd = pdata->avd + pdata->frametime_us; - - /* There are two knobs available for keeping the video synchronized with the audio: - * 1. frame_step; how many frames to encode from this frame (aka dropping frames if > 1) - * 2. delay; how long to delay the next get_frame - * - * When avd is negative, we need more video relative to audio. That can be achieved - * by either sleeping less between frames, or dropping them by having the encoder - * encode a given frame multiple times. - * - * When avd is positive, we need more audio relative to video, so less video. This - * can be achieved by sleeping more between frames. - */ - - if (avd < 0) { - int frames_behind = -avd / pdata->frametime_us; - - if (frames_behind > 0) { - /* more than a whole frame behind, drop frames to catch up */ - *frame_step += frames_behind; - avd += frames_behind * pdata->frametime_us; - } else { - /* less than a whole frame behind, just sleep less */ - *delay = us_to_timespec(pdata->frametime_us + avd); - } - - } else if (avd > 0) { - /* sleep longer */ - *delay = us_to_timespec(pdata->frametime_us + avd); - } - - pdata->avd = avd; - pthread_mutex_unlock(&pdata->avd_mutex); - -#if 0 - printf("avd: %i frame_step: %u delay: %lu,%lu\n", - avd, *frame_step, (*delay).tv_sec, (*delay).tv_nsec); -#endif -} - -void *rmdTimer(ProgData *pdata) -{ - rmdThreadsSetName("rmdTimer"); - - while (pdata->timer_alive) { - struct timespec delay; - unsigned int frame_step = 1; - - delay.tv_sec = 1.f / pdata->args.fps; - delay.tv_nsec = 1000000000.f / pdata->args.fps - delay.tv_sec * 1000000000.f; - - pthread_mutex_lock(&pdata->pause_mutex); - if (pdata->pause_state_changed) { - pdata->pause_state_changed = FALSE; - - if (!pdata->paused) { - pdata->paused = TRUE; - fprintf(stderr, "STATE:PAUSED\n"); - } else { - pdata->paused = FALSE; - fprintf(stderr, "STATE:RECORDING\n"); - pthread_cond_broadcast(&pdata->pause_cond); - } - } - - /* When paused, stop advancing time_frameno, get_frame only progresses - * when time_frameno > capture_frameno. But get_frame needs to service - * the event loop even when paused, so still signal time_cond just with - * pdata->time_frameno frozen. get_frame will then handle time_cond - * wakeups where capture_frameno >= time_frameno as "poll events". - */ - if (pdata->paused) - frame_step = 0; - pthread_mutex_unlock(&pdata->pause_mutex); - - if (frame_step) { - if (!pdata->args.nosound) - sync_streams(pdata, &frame_step, &delay); - - pthread_mutex_lock(&pdata->time_mutex); - pdata->time_frameno += frame_step; - pthread_mutex_unlock(&pdata->time_mutex); - } - - pthread_cond_signal(&pdata->time_cond); - - nanosleep(&delay, NULL); - } - - pthread_exit(&errno); -} |