apps/ffmpeg-rockchip
1
0
Fork 0
mirror of https://github.com/nyanmisaka/ffmpeg-rockchip.git synced 2025-10-14 21:06:58 +08:00
Code Issues Packages Projects Releases Wiki Activity

lavc: Add device context field to AVCodecContext

Browse Source 
For use by codec implementations which can allocate frames internally.
This commit is contained in:
Mark Thompson
2017-02-11 15:13:04 +00:00
parent 07b5136c48
commit 44f2eda39f
4 changed files with 29 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
libavcodec/avcodec.h
View File

@@ -3093,7 +3093,8 @@ typedef struct AVCodecContext {
/**
* A reference to the AVHWFramesContext describing the input (for encoding)
* or output (decoding) frames. The reference is set by the caller and
* afterwards owned (and freed) by libavcodec.
* afterwards owned (and freed) by libavcodec - it should never be read by
* the caller after being set.
*
* - decoding: This field should be set by the caller from the get_format()
* callback. The previous reference (if any) will always be
@@ -3139,6 +3140,28 @@ typedef struct AVCodecContext {
* (with the display dimensions being determined by the crop_* fields).
*/
int apply_cropping;
/**
* A reference to the AVHWDeviceContext describing the device which will
* be used by a hardware encoder/decoder. The reference is set by the
* caller and afterwards owned (and freed) by libavcodec.
*
* This should be used if either the codec device does not require
* hardware frames or any that are used are to be allocated internally by
* libavcodec. If the user wishes to supply any of the frames used as
* encoder input or decoder output then hw_frames_ctx should be used
* instead. When hw_frames_ctx is set in get_format() for a decoder, this
* field will be ignored while decoding the associated stream segment, but
* may again be used on a following one after another get_format() call.
*
* For both encoders and decoders this field should be set before
* avcodec_open2() is called and must not be written to thereafter.
*
* Note that some decoders may require this field to be set initially in
* order to support hw_frames_ctx at all - in that case, all frames
* contexts used must be created on the same device.
*/
AVBufferRef *hw_device_ctx;
} AVCodecContext;
/**