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From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
To: Dikshita Agarwal <dikshita@codeaurora.org>,
	linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-msm@vger.kernel.org
Cc: mchehab@kernel.org, ezequiel@collabora.com,
	stanimir.varbanov@linaro.org, vgarodia@codeaurora.org,
	majja@codeaurora.org
Subject: Re: [PATCH v2 1/2] media: v4l2-ctrl: Add frame-specific min/max qp controls for hevc
Date: Wed, 11 Nov 2020 12:59:57 +0100	[thread overview]
Message-ID: <32716f9e-8fb9-5c8f-7f3b-742200ce00c2@xs4all.nl> (raw)
In-Reply-To: <1600693440-3015-2-git-send-email-dikshita@codeaurora.org>

On 21/09/2020 15:03, Dikshita Agarwal wrote:
> - Adds min/max qp controls for B frame for h264.
> - Adds min/max qp controls for I/P/B frames for hevc similar to h264.
> - Update valid range of mim/max qp for hevc to accommodate 10 bit.
> 
> Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>
> ---
>  .../userspace-api/media/v4l/ext-ctrls-codec.rst    | 54 +++++++++++++++++++++-
>  drivers/media/v4l2-core/v4l2-ctrls.c               |  8 ++++
>  include/uapi/linux/v4l2-controls.h                 |  9 ++++
>  3 files changed, 69 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> index ce728c75..26f8220 100644
> --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> @@ -1182,6 +1182,18 @@ enum v4l2_mpeg_video_h264_entropy_mode -
>      V4L2_CID_MPEG_VIDEO_H264_MAX_QP is also set, the quantization parameter
>      should be chosen to meet both requirements.
>  
> +``V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP (integer)``
> +    Minimum quantization parameter for the H264 B frame to limit B frame
> +    quality to a range. Valid range: from 0 to 51. If
> +    V4L2_CID_MPEG_VIDEO_H264_MIN_QP is also set, the quantization parameter
> +    should be chosen to meet both requirements.
> +
> +``V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP (integer)``
> +    Maximum quantization parameter for the H264 B frame to limit B frame
> +    quality to a range. Valid range: from 0 to 51. If
> +    V4L2_CID_MPEG_VIDEO_H264_MAX_QP is also set, the quantization parameter
> +    should be chosen to meet both requirements.
> +
>  ``V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP (integer)``
>      Quantization parameter for an I frame for MPEG4. Valid range: from 1
>      to 31.
> @@ -3441,11 +3453,13 @@ HEVC/H.265 Control IDs
>  
>  ``V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP (integer)``
>      Minimum quantization parameter for HEVC.
> -    Valid range: from 0 to 51.
> +    Valid range: from 0 - 51 for 8 bit and
> +    0 - 63 for 10 bit.

This can be on one line.

>  
>  ``V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP (integer)``
>      Maximum quantization parameter for HEVC.
> -    Valid range: from 0 to 51.
> +    Valid range: from 0 - 51 for 8 bit and
> +    0 - 63 for 10 bit

Same here, but this is also missing a period at the end.

>  
>  ``V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP (integer)``
>      Quantization parameter for an I frame for HEVC.
> @@ -3462,6 +3476,42 @@ HEVC/H.265 Control IDs
>      Valid range: [V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP,
>      V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP].
>  
> +``V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP (integer)``
> +    Minimum quantization parameter for the HEVC I frame to limit I frame
> +    quality to a range. Valid range: from 0 to 51 for 8 bit, 0 - 63 for 10 bit.
> +    If V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP is also set, the quantization parameter
> +    should be chosen to meet both requirements.
> +
> +``V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP (integer)``
> +    Maximum quantization parameter for the HEVC I frame to limit I frame
> +    quality to a range. Valid range: from 0 to 51 for 8 bit, 0 - 63 for 10 bit.
> +    If V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP is also set, the quantization parameter
> +    should be chosen to meet both requirements.
> +
> +``V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP (integer)``
> +    Minimum quantization parameter for the HEVC P frame to limit P frame
> +    quality to a range. Valid range: from 0 to 51 for 8 bit, 0 - 63 for 10 bit.
> +    If V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP is also set, the quantization parameter
> +    should be chosen to meet both requirements.
> +
> +``V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP (integer)``
> +    Maximum quantization parameter for the HEVC P frame to limit P frame
> +    quality to a range. Valid range: from 0 to 51 for 8 bit, 0 - 63 for 10 bit.
> +    If V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP is also set, the quantization parameter
> +    should be chosen to meet both requirements.
> +
> +``V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP (integer)``
> +    Minimum quantization parameter for the HEVC B frame to limit B frame
> +    quality to a range. Valid range: from 0 to 51 for 8 bit, 0 - 63 for 10 bit.
> +    If V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP is also set, the quantization parameter
> +    should be chosen to meet both requirements.
> +
> +``V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP (integer)``
> +    Maximum quantization parameter for the HEVC B frame to limit B frame
> +    quality to a range. Valid range: from 0 to 51 for 8 bit, 0 - 63 for 10 bit.
> +    If V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP is also set, the quantization parameter
> +    should be chosen to meet both requirements.
> +
>  ``V4L2_CID_MPEG_VIDEO_HEVC_HIER_QP (boolean)``
>      HIERARCHICAL_QP allows the host to specify the quantization parameter
>      values for each temporal layer through HIERARCHICAL_QP_LAYER. This is
> diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
> index bd7f330..abef73e 100644
> --- a/drivers/media/v4l2-core/v4l2-ctrls.c
> +++ b/drivers/media/v4l2-core/v4l2-ctrls.c
> @@ -920,6 +920,8 @@ const char *v4l2_ctrl_get_name(u32 id)
>  	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MAX_QP:		return "H264 I-Frame Maximum QP Value";
>  	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MIN_QP:		return "H264 P-Frame Minimum QP Value";
>  	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MAX_QP:		return "H264 P-Frame Maximum QP Value";
> +	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP:		return "H264 B-Frame Minimum QP Value";
> +	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP:		return "H264 B-Frame Maximum QP Value";
>  	case V4L2_CID_MPEG_VIDEO_H264_SPS:			return "H264 Sequence Parameter Set";
>  	case V4L2_CID_MPEG_VIDEO_H264_PPS:			return "H264 Picture Parameter Set";
>  	case V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX:		return "H264 Scaling Matrix";
> @@ -978,6 +980,12 @@ const char *v4l2_ctrl_get_name(u32 id)
>  	case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP:		return "HEVC B-Frame QP Value";
>  	case V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP:			return "HEVC Minimum QP Value";
>  	case V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP:			return "HEVC Maximum QP Value";
> +	case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP:		return "HEVC I-Frame Minimum QP Value";
> +	case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP:		return "HEVC I-Frame Maximum QP Value";
> +	case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP:		return "HEVC P-Frame Minimum QP Value";
> +	case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP:		return "HEVC P-Frame Maximum QP Value";
> +	case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP:		return "HEVC B-Frame Minimum QP Value";
> +	case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP:		return "HEVC B-Frame Maximum QP Value";
>  	case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:			return "HEVC Profile";
>  	case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:			return "HEVC Level";
>  	case V4L2_CID_MPEG_VIDEO_HEVC_TIER:			return "HEVC Tier";
> diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
> index a184c49..7ba05fe 100644
> --- a/include/uapi/linux/v4l2-controls.h
> +++ b/include/uapi/linux/v4l2-controls.h
> @@ -578,6 +578,8 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type {
>  #define V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MAX_QP	(V4L2_CID_MPEG_BASE+386)
>  #define V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MIN_QP	(V4L2_CID_MPEG_BASE+387)
>  #define V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MAX_QP	(V4L2_CID_MPEG_BASE+388)
> +#define V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP	(V4L2_CID_MPEG_BASE+389)
> +#define V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP	(V4L2_CID_MPEG_BASE+390)
>  #define V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP	(V4L2_CID_MPEG_BASE+400)
>  #define V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP	(V4L2_CID_MPEG_BASE+401)
>  #define V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP	(V4L2_CID_MPEG_BASE+402)
> @@ -762,6 +764,13 @@ enum v4l2_cid_mpeg_video_hevc_size_of_length_field {
>  #define V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR	(V4L2_CID_MPEG_BASE + 644)
>  #define V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY		(V4L2_CID_MPEG_BASE + 645)
>  #define V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE		(V4L2_CID_MPEG_BASE + 646)
> +#define V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP	(V4L2_CID_MPEG_BASE+647)
> +#define V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP	(V4L2_CID_MPEG_BASE+648)
> +#define V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP	(V4L2_CID_MPEG_BASE+649)
> +#define V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP	(V4L2_CID_MPEG_BASE+650)
> +#define V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP	(V4L2_CID_MPEG_BASE+651)
> +#define V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP	(V4L2_CID_MPEG_BASE+652)
> +
>  enum v4l2_mpeg_video_frame_skip_mode {
>  	V4L2_MPEG_VIDEO_FRAME_SKIP_MODE_DISABLED	= 0,
>  	V4L2_MPEG_VIDEO_FRAME_SKIP_MODE_LEVEL_LIMIT	= 1,
> 

Regards,

	Hans

  reply	other threads:[~2020-11-11 12:00 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-21 13:03 [PATCH v2 0/2] Add new controls for QP and layer bitrate Dikshita Agarwal
2020-09-21 13:03 ` [PATCH v2 1/2] media: v4l2-ctrl: Add frame-specific min/max qp controls for hevc Dikshita Agarwal
2020-11-11 11:59   ` Hans Verkuil [this message]
2020-09-21 13:04 ` [PATCH v2 2/2] media: v4l2-ctrl: Add layer wise bitrate controls for h264 Dikshita Agarwal
2020-11-11 11:55   ` Hans Verkuil
2020-09-24 17:42 ` [PATCH v2 0/2] Add new controls for QP and layer bitrate Nicolas Dufresne
2020-11-11 11:47   ` Hans Verkuil

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