Programming With QuickTime VR

Quality Properties

The propertyValue parameter of the QTVRGetImagingProperty and QTVRSetImagingProperty functions specifies the value of an imaging property of a panoramic node. These constants define the available values of the kQTVRImagingQuality imaging property:



 
#define codecMinQuality                             0x000L

#define codecLowQuality                             0x100L

#define codecNormalQuality                          0x200L

#define codecHighQuality                            0x300L

#define codecMaxQuality                             0x3FFL

The imaging quality setting is interpreted purely as a scalar value, in much the same way as it is for any other QuickTime movie.

The use of codecMinQuality always results in the best possible performance without regard to quality, even on systems where a negligible decrease in performance might yield significant improvements in quality. Similarly, the use of codecMaxQuality always results in the best possible quality, regardless of performance. Because of the possibility for extreme degradation of performance or quality, the scalar limits should be used only in specialized circumstances. Values of codecLowQuality and codecHighQuality are recommended for good performance and quality, respectively, across a range of different systems.