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Use a looping thread to trigger refreshes

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This commit is contained in:
Chris Robinson 2012-12-15 09:14:58 -08:00
parent fa1ad381da
commit 9b3cf5c159
1 changed files with 23 additions and 40 deletions
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63
apps/openmw/mwrender/videoplayer.cpp
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@ -59,7 +59,7 @@ struct VideoState {
VideoState()
: videoStream(-1), audioStream(-1), av_sync_type(0), external_clock_base(0),
audio_clock(0), audio_st(NULL), audio_diff_cum(0), audio_diff_avg_coef(0),
audio_diff_threshold(0), audio_diff_avg_count(0), frame_timer(0), frame_last_pts(0),
audio_diff_threshold(0), audio_diff_avg_count(0), frame_last_pts(0),
frame_last_delay(0), video_clock(0), video_st(NULL), rgbaFrame(NULL), pictq_size(0),
pictq_rindex(0), pictq_windex(0), quit(false), refresh(0), format_ctx(0),
sws_context(NULL), display_ready(0)
@ -82,8 +82,7 @@ struct VideoState {
int queue_picture(AVFrame *pFrame, double pts);
double synchronize_video(AVFrame *src_frame, double pts);
static void timer_callback(VideoState* is, boost::system_time t);
void schedule_refresh(int delay);
static void video_refresh(VideoState *is);
double get_audio_clock()
@ -123,7 +122,6 @@ struct VideoState {
double audio_diff_threshold;
int audio_diff_avg_count;
double frame_timer;
double frame_last_pts;
double frame_last_delay;
double video_clock; ///<pts of last decoded frame / predicted pts of next decoded frame
@ -147,8 +145,11 @@ struct VideoState {
boost::thread parse_thread;
boost::thread video_thread;
volatile int quit;
boost::thread refresh_thread;
volatile int refresh_rate_ms;
volatile bool refresh;
volatile int quit;
int display_ready;
};
@ -507,17 +508,15 @@ int64_t VideoState::OgreResource_Seek(void *user_data, int64_t offset, int whenc
}
void VideoState::timer_callback(VideoState* is, boost::system_time t)
void VideoState::video_refresh(VideoState* is)
{
boost::this_thread::sleep(t);
is->refresh = true;
}
/* schedule a video refresh in 'delay' ms */
void VideoState::schedule_refresh(int delay)
{
boost::system_time t = boost::get_system_time() + boost::posix_time::milliseconds(delay);
boost::thread(boost::bind(&timer_callback, this, t)).detach();
boost::system_time t = boost::get_system_time();
while(!is->quit)
{
t += boost::posix_time::milliseconds(is->refresh_rate_ms);
boost::this_thread::sleep(t);
is->refresh = true;
}
}
@ -551,18 +550,10 @@ void VideoState::video_display()
void VideoState::video_refresh_timer()
{
VideoPicture *vp;
double actual_delay, delay;
double delay;
if(!this->video_st)
{
this->schedule_refresh(100);
return;
}
if(this->pictq_size == 0)
{
this->refresh = true;
return;
}
vp = &this->pictq[this->pictq_rindex];
@ -575,6 +566,8 @@ void VideoState::video_refresh_timer()
this->frame_last_delay = delay;
this->frame_last_pts = vp->pts;
/* FIXME: Syncing should be done in the decoding stage, where frames can be
* skipped or duplicated as needed. */
/* update delay to sync to audio if not master source */
if(this->av_sync_type != AV_SYNC_VIDEO_MASTER)
{
@ -588,21 +581,10 @@ void VideoState::video_refresh_timer()
else if(diff >= sync_threshold)
delay = 2 * delay;
}
this->frame_timer += delay;
/* compute the REAL delay */
actual_delay = this->frame_timer - (av_gettime() / 1000000.0);
if(actual_delay < 0.010)
{
/* Skip this picture */
this->refresh = true;
}
else
{
this->schedule_refresh((int)(actual_delay * 1000 + 0.5));
/* show the picture! */
this->video_display();
}
this->refresh_rate_ms = std::max<int>(1, (int)(delay*1000.0));
/* show the picture! */
this->video_display();
/* update queue for next picture! */
this->pictq_rindex = (this->pictq_rindex+1) % VIDEO_PICTURE_QUEUE_SIZE;
@ -838,12 +820,12 @@ int VideoState::stream_open(int stream_index, AVFormatContext *pFormatCtx)
this->videoStream = stream_index;
this->video_st = pFormatCtx->streams[stream_index];
this->frame_timer = (double)av_gettime() / 1000000.0;
this->frame_last_delay = 40e-3;
codecCtx->get_buffer = our_get_buffer;
codecCtx->release_buffer = our_release_buffer;
this->video_thread = boost::thread(video_thread_loop, this);
this->refresh_thread = boost::thread(video_refresh, this);
break;
default:
@ -864,6 +846,7 @@ void VideoState::init(const std::string& resourceName)
this->av_sync_type = AV_SYNC_DEFAULT;
this->videoStream = -1;
this->audioStream = -1;
this->refresh_rate_ms = 10;
this->refresh = false;
this->quit = 0;
@ -909,7 +892,6 @@ void VideoState::init(const std::string& resourceName)
if(video_index >= 0)
this->stream_open(video_index, this->format_ctx);
this->schedule_refresh(40);
this->parse_thread = boost::thread(decode_thread_loop, this);
}
catch(std::runtime_error& e)
@ -931,6 +913,7 @@ void VideoState::deinit()
this->parse_thread.join();
this->video_thread.join();
this->refresh_thread.join();
if(this->audioStream >= 0)
avcodec_close(this->audio_st->codec);