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| author | Nicholas Bennett <nicholas.bennett@qt.io> | 2023-05-12 15:14:46 +0300 |
|---|---|---|
| committer | Nicholas Bennett <nicholas.bennett@qt.io> | 2023-05-15 08:09:51 +0000 |
| commit | 954053c17cb53b41c8ecf8cb794898c89fdef5e4 (patch) | |
| tree | b150b81acc93f0bb30177836cd0c2455d74c4550 | |
| parent | 0be2d4501f8420d966e14e3c5f5b00fe2b0e5a17 (diff) | |
| download | qtmultimedia-954053c17cb53b41c8ecf8cb794898c89fdef5e4.tar.gz | |
Docs: Add note about YUV420P format with FFMPEG backend on Android
Being a generic format, we can receive either a fully planar 4:2:0 - YUV420P or
a semiplanar NV12/NV21. That will depend on the codec implemented in the device,
so device-dependent.
Fixes: QTBUG-112454
Pick-to: 6.5 6.5.1
Change-Id: Iebebca8d3d2bb5b540f92ec87b536dcb49ec7e4f
Reviewed-by: Mats Honkamaa <mats.honkamaa@qt.io>
| -rw-r--r-- | src/multimedia/camera/qcamera.cpp | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/src/multimedia/camera/qcamera.cpp b/src/multimedia/camera/qcamera.cpp index 928217bd2..ca9200b04 100644 --- a/src/multimedia/camera/qcamera.cpp +++ b/src/multimedia/camera/qcamera.cpp @@ -460,6 +460,11 @@ void QCamera::setCameraDevice(const QCameraDevice &cameraDevice) Gets or sets the currently active camera format. + \note When using the FFMPEG backend on an Android target device if you request + \b YUV420P format, you will receive either a fully planar 4:2:0 YUV420P or a + semi-planar NV12/NV21. This depends on the codec implemented by the device + OEM. + \sa cameraDevice::videoFormats */ @@ -468,6 +473,11 @@ void QCamera::setCameraDevice(const QCameraDevice &cameraDevice) Returns the camera format currently used by the camera. + \note When using the FFMPEG backend on an Android target device if you request + \b YUV420P format, you will receive either a fully planar 4:2:0 YUV420P or a + semi-planar NV12/NV21. This depends on the codec implemented by the device + OEM. + \sa QCameraDevice::videoFormats */ QCameraFormat QCamera::cameraFormat() const @@ -477,8 +487,13 @@ QCameraFormat QCamera::cameraFormat() const } /*! - Tells the camera to use the format desribed by \a format. This can be used to define - as specific resolution and frame rate to be used for recording and image capture. + Tells the camera to use the format described by \a format. This can be used to define + a specific resolution and frame rate to be used for recording and image capture. + + \note When using the FFMPEG backend on an Android target device if you request + \b YUV420P format, you will receive either a fully planar 4:2:0 YUV420P or a + semi-planar NV12/NV21. This depends on the codec implemented by the device + OEM. */ void QCamera::setCameraFormat(const QCameraFormat &format) { |