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| author | Hendrik Leppkes <h.leppkes@gmail.com> | 2016-11-13 22:35:04 +0100 |
|---|---|---|
| committer | Hendrik Leppkes <h.leppkes@gmail.com> | 2016-11-13 22:35:04 +0100 |
| commit | 72c38dd66e528f4d70c103c5cfc4ebc25a21cc62 (patch) | |
| tree | cfa0f579e7e3b22c4d9b9d46eb068edb10de54fe | |
| parent | e3d9bd7102beaeef8fe3520abe908e5bc0ec6df1 (diff) | |
| parent | 5fcae3b3f93fd02b3d1e009b9d9b17410fca9498 (diff) | |
| download | ffmpeg-72c38dd66e528f4d70c103c5cfc4ebc25a21cc62.tar.gz | |
Merge commit '5fcae3b3f93fd02b3d1e009b9d9b17410fca9498'
* commit '5fcae3b3f93fd02b3d1e009b9d9b17410fca9498':
hwcontext: clarify the behaviour of transfer_data() for cropped frames
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
| -rw-r--r-- | libavutil/hwcontext.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavutil/hwcontext.h b/libavutil/hwcontext.h index 5e2af092a4..785da090b3 100644 --- a/libavutil/hwcontext.h +++ b/libavutil/hwcontext.h @@ -318,6 +318,14 @@ int av_hwframe_get_buffer(AVBufferRef *hwframe_ctx, AVFrame *frame, int flags); * If dst->format is set, then this format will be used, otherwise (when * dst->format is AV_PIX_FMT_NONE) the first acceptable format will be chosen. * + * The two frames must have matching allocated dimensions (i.e. equal to + * AVHWFramesContext.width/height), since not all device types support + * transferring a sub-rectangle of the whole surface. The display dimensions + * (i.e. AVFrame.width/height) may be smaller than the allocated dimensions, but + * also have to be equal for both frames. When the display dimensions are + * smaller than the allocated dimensions, the content of the padding in the + * destination frame is unspecified. + * * @param dst the destination frame. dst is not touched on failure. * @param src the source frame. * @param flags currently unused, should be set to zero |