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lavc: external hardware frame pool initialization

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This adds a new API, which allows the API user to query the required
AVHWFramesContext parameters. This also reduces code duplication across
the hwaccels by introducing ff_decode_get_hw_frames_ctx(), which uses
the new API function. It takes care of initializing the hw_frames_ctx
if needed, and does additional error handling and API usage checking.

Support for VDA and Cuvid missing.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
wm4
2017-10-19 17:10:59 +02:00
committed by Anton Khirnov
parent ec0f4fa17c
commit b46a77f19d
26 changed files with 396 additions and 182 deletions
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doc/APIchanges
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@@ -13,6 +13,9 @@ libavutil: 2017-03-23
API changes, most recent first:
2017-xx-xx - xxxxxxx - lavc 58.5.0 - avcodec.h
Add avcodec_get_hw_frames_parameters().
2017-xx-xx - xxxxxxx - lavu 56.6.0 - pixdesc.h
Add av_color_range_from_name(), av_color_primaries_from_name(),
av_color_transfer_from_name(), av_color_space_from_name(), and