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avfvideosrc: dispatch AVFoundation calls synchronously in the main queue

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Matthieu Bouron 2013-10-30 14:51:50 +00:00 committed by Andoni Morales Alastruey
parent 0d74dc802a
commit 19844fab47
1 changed files with 5 additions and 30 deletions
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35
sys/applemedia/avfvideosrc.m
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@ -133,10 +133,6 @@ G_DEFINE_TYPE (GstAVFVideoSrc, gst_avf_video_src, GST_TYPE_PUSH_SRC);
didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
fromConnection:(AVCaptureConnection *)connection;
- (void)waitForMainQueueToDrain;
- (void)waitForWorkerQueueToDrain;
- (void)waitForQueueToDrain:(dispatch_queue_t)dispatchQueue;
@end
@implementation GstAVFVideoSrcImpl
@ -181,7 +177,7 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
{
BOOL success = NO, *successPtr = &success;
dispatch_async (mainQueue, ^{
dispatch_sync (mainQueue, ^{
NSString *mediaType = AVMediaTypeVideo;
NSError *err;
@ -231,14 +227,13 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
*successPtr = YES;
});
[self waitForMainQueueToDrain];
return success;
}
- (void)closeDevice
{
dispatch_async (mainQueue, ^{
dispatch_sync (mainQueue, ^{
g_assert (![session isRunning]);
[session removeInput:input];
@ -256,7 +251,6 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
[device release];
device = nil;
});
[self waitForMainQueueToDrain];
}
#define GST_AVF_CAPS_NEW(format, w, h) \
@ -328,7 +322,7 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
height = info.height;
format = info.finfo->format;
dispatch_async (mainQueue, ^{
dispatch_sync (mainQueue, ^{
int newformat;
g_assert (![session isRunning]);
@ -380,12 +374,10 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
width, height,
GST_FOURCC_ARGS (gst_video_format_to_fourcc (format)));
output.videoSettings = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:newformat] forKey:(NSString*)kCVPixelBufferPixelFormatTypeKey];
[session startRunning];
});
[self waitForMainQueueToDrain];
return YES;
}
@ -408,9 +400,8 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
- (BOOL)stop
{
dispatch_async (mainQueue, ^{ [session stopRunning]; });
[self waitForMainQueueToDrain];
[self waitForWorkerQueueToDrain];
dispatch_sync (mainQueue, ^{ [session stopRunning]; });
dispatch_sync (workerQueue, ^{});
[bufQueueLock release];
bufQueueLock = nil;
@ -590,22 +581,6 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
}
}
- (void)waitForMainQueueToDrain
{
[self waitForQueueToDrain:mainQueue];
}
- (void)waitForWorkerQueueToDrain
{
[self waitForQueueToDrain:workerQueue];
}
- (void)waitForQueueToDrain:(dispatch_queue_t)dispatchQueue
{
if (dispatchQueue != dispatch_get_current_queue())
dispatch_sync (dispatchQueue, ^{});
}
@end
/*