Since the VDPAU pixel format does not distinguish between different VDPAU video surface chroma types, we need another way to pass this data to the application. Originally VDPAU in libavcodec only supported decoding to 8-bits YUV with 4:2:0 chroma sampling. Correspondingly, applications assumed that libavcodec expected VDP_CHROMA_TYPE_420 video surfaces for output. However some of the new HEVC profiles proposed for addition to VDPAU would require different depth and/or sampling: http://lists.freedesktop.org/archives/vdpau/2014-July/000167.html ...as would lossless AVC profiles: http://lists.freedesktop.org/archives/vdpau/2014-November/000241.html To preserve backward binary compatibility with existing applications, a new av_vdpau_bind_context() flag is introduced in a further change.
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| @@ -13,6 +13,9 @@ libavutil: 2014-08-09 · 12 unmodified lines | |||
| 13 | 13 | ||
| 14 | API changes, most recent first: | 14 | API changes, most recent first: |
| 15 | 15 | ||
| 16 | 201x-xx-xx - xxxxxxx - lavc 56.10.0 - vdpau.h | ||
| 17 | Add av_vdpau_get_surface_parameters(). | ||
| 18 | |||
| 16 | 201x-xx-xx - xxxxxxx - lavc 56.9.0 - avcodec.h | 19 | 201x-xx-xx - xxxxxxx - lavc 56.9.0 - avcodec.h |
| 17 | Add AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH flag to av_vdpau_bind_context(). | 20 | Add AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH flag to av_vdpau_bind_context(). |
| 18 | 21 | ||