On Mon, Apr 8, 2019 at 10:54 AM Zachary Zhou <[email protected]> wrote: > > This is sample code for reference > > HW support for decode+scaling in a single HW command (VDBOX+SFC). > The primary target usage is video analytics, but can be used playback, > transcoding, etc. > > For VAAPI - > https://github.com/intel/libva > basically, it allows multiple outputs (in different resolutions) using the > decode context in a single call (you can search for “additional_outputs” in > va.h). > > VAAPI sample code - > https://github.com/intel/libva-utils/commit/957a269f02b00760b7e807643c821ee26abc529b > --- > libavcodec/avcodec.h | 8 +++ > libavcodec/decode.c | 16 +++++ > libavcodec/options_table.h | 4 ++ > libavcodec/vaapi_decode.c | 122 ++++++++++++++++++++++++++++++++++--- > libavcodec/vaapi_decode.h | 30 +++++++++ > libavcodec/vaapi_h264.c | 13 ++++ > 6 files changed, 185 insertions(+), 8 deletions(-) > > diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h > index 0ce22ec4fa..36db21c0a5 100644 > --- a/libavcodec/avcodec.h > +++ b/libavcodec/avcodec.h > @@ -3357,6 +3357,14 @@ typedef struct AVCodecContext { > * - encoding: unused > */ > int discard_damaged_percentage; > + > + /* > + * Thumbnail options > + */ > + int thumbnail_flags; > + int thumbnail_format; > + int thumbnail_width; > + int thumbnail_height; > } AVCodecContext; >
Global fields for such a purpose seem not appropriate. We try to get away from fields that only serve a single purpose with a single decoder. Nevermind that they aren't even documented. In general I must say I'm not sure I like this entire patchset. We have component seperation for a reason, so trying to add magic features like that is generally a bad idea. - Hendrik _______________________________________________ ffmpeg-devel mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
