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AVCaptureDeviceFormat - avoid duplicates (OS X/iOS)

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Excluding video range (iOS) is not the right way to avoid "duplicates" - with
other devices there can be also duplicates (formats with the same resolutions),
but completely different pixel formats. Since we do not know what they will be in advance,
we take the media subtype from the initial preset for a capture device and use it
as a filter. Update viewfinder and image encoder settings controls.

Change-Id: If20aea24b19b43574d5c3e9bf2ba85f50fc08916
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
This commit is contained in:
Timur Pocheptsov
2015-03-04 16:34:32 +01:00
parent dbcf44247d
commit f839f9e3eb
6 changed files with 141 additions and 94 deletions
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10
src/plugins/avfoundation/camera/avfcamerautility.h
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@@ -97,13 +97,17 @@ AVFRational qt_float_to_rational(qreal par, int limit);
#if QT_MAC_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_7, __IPHONE_7_0)
bool qt_is_video_range_subtype(AVCaptureDeviceFormat *format);
QVector<AVCaptureDeviceFormat *> qt_unique_device_formats(AVCaptureDevice *captureDevice,
FourCharCode preferredFormat);
QSize qt_device_format_resolution(AVCaptureDeviceFormat *format);
QSize qt_device_format_high_resolution(AVCaptureDeviceFormat *format);
QSize qt_device_format_pixel_aspect_ratio(AVCaptureDeviceFormat *format);
QVector<AVFPSRange> qt_device_format_framerates(AVCaptureDeviceFormat *format);
AVCaptureDeviceFormat *qt_find_best_resolution_match(AVCaptureDevice *captureDevice, const QSize &res);
AVCaptureDeviceFormat *qt_find_best_framerate_match(AVCaptureDevice *captureDevice, Float64 fps);
AVCaptureDeviceFormat *qt_find_best_resolution_match(AVCaptureDevice *captureDevice, const QSize &res,
FourCharCode preferredFormat);
AVCaptureDeviceFormat *qt_find_best_framerate_match(AVCaptureDevice *captureDevice,
FourCharCode preferredFormat,
Float64 fps);
AVFrameRateRange *qt_find_supported_framerate_range(AVCaptureDeviceFormat *format, Float64 fps);
#endif