From: "Wojciech Biegański" <wbieganski@baylibre.com>
To: Zhentao Guo <zhentao.guo@amlogic.com>
Cc: Nicolas Dufresne <nicolas.dufresne@collabora.com>,
Neil Armstrong <neil.armstrong@linaro.org>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-media@vger.kernel.org, devicetree@vger.kernel.org,
Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Subject: Re: [PATCH v12 0/6] Add Amlogic stateless H.264 video decoder for S4
Date: Fri, 30 Oct 2026 15:24:06 +0100 [thread overview]
Message-ID: <179337024629.131241.9227206619077693683.b4-reply@b4> (raw)
In-Reply-To: <20261022-b4-s4-vdec-upstream-v12-0-616240978792@amlogic.com>
Hi,
I tested v12 series on AQ222 board with v7.2-rc1. Firmware version:
'v0.4.ff.I0c83495.75444b3' build 'Thu Apr 16 18:18:55 2026'.
RAW NV12 frames at the decoder output were visually OK across typical
resolutions and H.264 profiles (main, high, baseline) with and without
B-frames in the stream, also with I-frames only streams. I used Gstreamer's
(ver. 1.26) 'v4l2slh264dec' element on Trixie with both mmap and DMA-bufs
buffering (on the capture queue only). Input bitstreams where
FFmpeg-generated (testsrc2 + libx264) or publicly available test videos.
Decoder (and the output) remained stable with simulated (non key) frame
drop at max resolution (1920x1088, noise generated by FFmpeg's bitstream
filter).
The performance at max resolution, tested with 'filesrc ! parsebin !
v4l2slh264dec ! fakevideosink' pipeline was ~85 fps (fixed number of
outputted frames divided by the total execution time).
Tested-by: Wojciech Biegański <wbieganski@baylibre.com>
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next prev parent reply other threads:[~2026-10-30 14:28 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-22 5:26 Zhentao Guo via B4 Relay
2026-10-22 5:26 ` [PATCH v12 1/6] firmware: meson: sm: video firmware loading via secure monitor Zhentao Guo via B4 Relay
2026-10-22 5:27 ` [PATCH v12 2/6] firmware: meson: sm: Add video firmware loading SMC call Zhentao Guo via B4 Relay
2026-10-22 5:27 ` [PATCH v12 3/6] media: dt-bindings: Add Amlogic V4L2 video decoder Zhentao Guo via B4 Relay
2026-10-30 11:27 ` Krzysztof Kozlowski
2026-10-30 11:57 ` Zhentao Guo
2026-10-22 5:27 ` [PATCH v12 4/6] decoder: Add V4L2 stateless H.264 decoder driver Zhentao Guo via B4 Relay
2026-10-30 11:30 ` Krzysztof Kozlowski
2026-10-30 11:51 ` Zhentao Guo
2026-10-22 5:27 ` [PATCH v12 5/6] arm64: dts: amlogic: Add video decoder driver support for S4 SOCs Zhentao Guo via B4 Relay
2026-10-22 6:01 ` sashiko-bot
2026-10-23 11:25 ` Zhentao Guo
2026-10-22 5:27 ` [PATCH v12 6/6] arm64: defconfig: Enable CONFIG_VIDEO_AMLOGIC_VDEC Zhentao Guo via B4 Relay
2026-10-22 5:53 ` sashiko-bot
2026-10-23 9:46 ` Zhentao Guo
2026-10-30 14:24 ` Wojciech Biegański [this message]
2026-10-30 15:10 ` [PATCH v12 0/6] Add Amlogic stateless H.264 video decoder for S4 Nicolas Dufresne
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