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applemedia: avfvideosrc: actually set the configured framerate

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Actually set the configured framerate. Before we only used to set the first
matching framerate range. On iOS where the camera reports ranges [2, 60], we
used to configure the camera to output anything between 2 and 60fps.
This commit is contained in:
Alessandro Decina 2016-01-27 14:36:36 +11:00
parent a152a8342b
commit 6f80d5c59a
1 changed files with 15 additions and 7 deletions
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22
sys/applemedia/avfvideosrc.m
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@ -521,16 +521,24 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
[[rate valueForKey:@"maxFrameRate"] getValue:&max_frame_rate];
if ((framerate >= min_frame_rate - 0.00001) &&
(framerate <= max_frame_rate + 0.00001)) {
NSValue *min_frame_duration, *max_frame_duration;
NSValue *frame_duration_value;
found_framerate = TRUE;
min_frame_duration = [rate valueForKey:@"minFrameDuration"];
max_frame_duration = [rate valueForKey:@"maxFrameDuration"];
[device setValue:min_frame_duration forKey:@"activeVideoMinFrameDuration"];
if (min_frame_rate == max_frame_rate) {
/* on mac we get tight ranges and an exception is raised if the
* frame duration doesn't match the one reported in the range to
* the last decimal point
*/
frame_duration_value = [rate valueForKey:@"minFrameDuration"];
} else {
double frame_duration;
gst_util_fraction_to_double (info->fps_d, info->fps_n, &frame_duration);
frame_duration_value = [NSNumber numberWithDouble:frame_duration];
}
[device setValue:frame_duration_value forKey:@"activeVideoMinFrameDuration"];
@try {
/* Only available on OSX >= 10.8 and iOS >= 7.0 */
// Restrict activeVideoMaxFrameDuration to the minimum value so we get a better capture frame rate
[device setValue:min_frame_duration forKey:@"activeVideoMaxFrameDuration"];
[device setValue:frame_duration_value forKey:@"activeVideoMaxFrameDuration"];
} @catch (NSException *exception) {
if (![[exception name] isEqualToString:NSUndefinedKeyException]) {
GST_WARNING ("An unexcepted error occured: %s",