QMultimedia Namespace
The QMultimedia namespace contains miscellaneous identifiers used throughout the Qt Multimedia library. More...
| Header: | #include <QMultimedia> |
| qmake: | QT += multimedia |
Types
| enum | AvailabilityStatus { Available, ServiceMissing, ResourceError, Busy } |
| enum | EncodingMode { ConstantQualityEncoding, ConstantBitRateEncoding, AverageBitRateEncoding, TwoPassEncoding } |
| enum | EncodingQuality { VeryLowQuality, LowQuality, NormalQuality, HighQuality, VeryHighQuality } |
| enum | SupportEstimate { NotSupported, MaybeSupported, ProbablySupported, PreferredService } |
Detailed Description
The QMultimedia namespace contains miscellaneous identifiers used throughout the Qt Multimedia library.
Type Documentation
enum QMultimedia::AvailabilityStatus
Enumerates Service status errors.
| Constant | Value | Description |
|---|---|---|
QMultimedia::Available | 0 | The service is operating correctly. |
QMultimedia::ServiceMissing | 1 | There is no service available to provide the requested functionality. |
QMultimedia::ResourceError | 3 | The service could not allocate resources required to function correctly. |
QMultimedia::Busy | 2 | The service must wait for access to necessary resources. |
enum QMultimedia::EncodingMode
Enumerates encoding modes.
| Constant | Value | Description |
|---|---|---|
QMultimedia::ConstantQualityEncoding | 0 | Encoding will aim to have a constant quality, adjusting bitrate to fit. |
QMultimedia::ConstantBitRateEncoding | 1 | Encoding will use a constant bit rate, adjust quality to fit. |
QMultimedia::AverageBitRateEncoding | 2 | Encoding will try to keep an average bitrate setting, but will use more or less as needed. |
QMultimedia::TwoPassEncoding | 3 | The media will first be processed to determine the characteristics, and then processed a second time allocating more bits to the areas that need it. |
enum QMultimedia::EncodingQuality
Enumerates quality encoding levels.
| Constant | Value |
|---|---|
QMultimedia::VeryLowQuality | 0 |
QMultimedia::LowQuality | 1 |
QMultimedia::NormalQuality | 2 |
QMultimedia::HighQuality | 3 |
QMultimedia::VeryHighQuality | 4 |
enum QMultimedia::SupportEstimate
Enumerates the levels of support a media service provider may have for a feature.
| Constant | Value | Description |
|---|---|---|
QMultimedia::NotSupported | 0 | The feature is not supported. |
QMultimedia::MaybeSupported | 1 | The feature may be supported. |
QMultimedia::ProbablySupported | 2 | The feature is probably supported. |
QMultimedia::PreferredService | 3 | The service is the preferred provider of a service. |