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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Explicitly identify decoder/encoder wrappers with a common name. This
saves API users from guessing by the name suffix. For example, they
don't have to guess that "h264_qsv" is the h264 QSV implementation, and
instead they can just check the AVCodec .codec and .wrapper_name fields.
Explicitly mark AVCodec entries that are hardware decoders or most
likely hardware decoders with new AV_CODEC_CAPs. The purpose is allowing
API users listing hardware decoders in a more generic way. The proposed
AVCodecHWConfig does not provide this information fully, because it's
concerned with decoder configuration, not information about the fact
whether the hardware is used or not.
AV_CODEC_CAP_HYBRID exists specifically for QSV, which can have software
implementations in case the hardware is not capable.
Based on a patch by Philip Langdale <philipl@overt.org>.
Merges Libav commit 47687a2f8aca3f65b6fdd117b1cb66a7409a7fd1.
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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AVCodecContext::refs is used to control the DPB size to be used by the
encoder. The default value for AVCodecContext::refs as set in
libavcodec/options_table.h is 1.
This patch sets AVCodecContext::refs to 0 for h264_nvenc and hevc_nvenc in
order to let the driver take the decision of the correct DPB size to use in
all cases.
Signed-off-by: Srinath K R <skr@nvidia.com>
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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This patch aims to reduce the number of input/output surfaces
NVENC allocates per session. Previous default sets allocated surfaces to 32
(unless there is user specified param or lookahead involved). Having large
number of surfaces consumes extra video memory (esp for higher resolution
encoding). The patch changes the surfaces calculation for default, B-frames,
lookahead scenario respectively.
The other change involves surface selection. Previously, if a session
allocates x surfaces, only x-1 surfaces are used (due to combination
of output delay and lock toggle logic). To prevent unused surfaces,
changing surface rotation to using predefined fifo.
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Maximum usable surfaces is limited to MAX_REGISTERED_FRAMES constant in
nvenc.h
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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The option is present in h264_nvenc, but was missing from hevc_nvenc.
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Merged from libav commit by Yogender Gupta:
https://git.libav.org/?p=libav.git;a=commitdiff;h=70de2ea4261f860457a04e3d0c58c5543f403325
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Use explicit nvenc capability checks instead to determine usable devices
instead of SM versions.
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
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