From: Sachin Kumar Garg <sachin.garg@oss.qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Vikash Garodia <vikash.garodia@oss.qualcomm.com>,
Dikshita Agarwal <dikshita.agarwal@oss.qualcomm.com>,
Abhinav Kumar <abhinav.kumar@linux.dev>,
Bryan O'Donoghue <bod@kernel.org>
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH 2/2] media: iris: add new rate control type MBR for encoder
Date: Mon, 16 Mar 2026 11:52:04 +0530 [thread overview]
Message-ID: <7f165169-427b-4f5b-9bee-bb227be23d82@oss.qualcomm.com> (raw)
In-Reply-To: <84895cad-9f1a-4e51-8e43-faf30b4bdabb@oss.qualcomm.com>
On 2/13/2026 3:24 PM, Konrad Dybcio wrote:
> On 2/13/26 7:04 AM, Sachin Kumar Garg wrote:
>> Introduce V4L2_MPEG_VIDEO_BITRATE_MODE_MBR rate control to Encoder.
>> Encoder will choose appropriate quantization parameter and
>> do the smart bit allocation to set the frame maximum bitrate
>> level as per the Bitrate value configured.
>> ---
>> drivers/media/platform/qcom/iris/iris_ctrls.c | 2 +
>> .../platform/qcom/iris/iris_hfi_gen1_defines.h | 1 +
>> .../media/platform/qcom/iris/iris_platform_gen1.c | 9 +-
>> .../platform/qcom/iris/iris_platform_sc7280.h | 202 +++++++++++++++++++++
>
> Is this really only available on 7280?
>
> Konrad
Yes Konrad, in this series we enable V4L2_MPEG_VIDEO_BITRATE_MODE_MBR
only for SC7280 because currently, we have added the support only for
low tier chipset. MBR rate control aims to improve the compression
efficiency of encoder for static and low motion scenes for extremely low
bitrate use-case.
Thanks,
Sachin
next prev parent reply other threads:[~2026-03-16 6:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-13 6:04 [PATCH 0/2] add MBR type rate control for encoder Sachin Kumar Garg
2026-02-13 6:04 ` [PATCH 1/2] media: v4l2-ctrls: add encoder maximum bitrate control Sachin Kumar Garg
2026-02-13 18:04 ` kernel test robot
2026-02-13 19:29 ` Nicolas Dufresne
2026-03-16 6:18 ` Sachin Kumar Garg
2026-02-13 6:04 ` [PATCH 2/2] media: iris: add new rate control type MBR for encoder Sachin Kumar Garg
2026-02-13 9:54 ` Konrad Dybcio
2026-03-16 6:22 ` Sachin Kumar Garg [this message]
2026-03-16 17:37 ` Nicolas Dufresne
2026-03-16 18:47 ` Dmitry Baryshkov
2026-03-30 5:44 ` Sachin Kumar Garg
2026-07-07 7:02 ` Vikash Garodia
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