From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753674AbdDDKie (ORCPT ); Tue, 4 Apr 2017 06:38:34 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:37318 "EHLO epoutp02.samsung.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753793AbdDDKhV (ORCPT ); Tue, 4 Apr 2017 06:37:21 -0400 X-AuditID: b6c32a2e-f79506d0000046c0-17-58e3775e54bc Subject: Re: [Patch v3 11/11] Documention: v4l: Documentation for HEVC CIDs From: Smitha T Murthy To: Hans Verkuil Cc: linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, kyungmin.park@samsung.com, kamil@wypas.org, jtp.park@samsung.com, a.hajda@samsung.com, mchehab@kernel.org, pankaj.dubey@samsung.com, krzk@kernel.org, m.szyprowski@samsung.com, s.nawrocki@samsung.com In-Reply-To: Date: Tue, 04 Apr 2017 16:09:13 +0530 Message-ID: <1491302353.8493.156.camel@smitha-fedora> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 (2.28.3-1.fc12) Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrHKsWRmVeSWpSXmKPExsWy7bCmhm5c+eMIg5s9+ha31p1jtTg1+RmT xZG1V5ksZp5oZ7U4f34Du8XZpjfsFpseX2O1uLxrDptFz4atrBZrj9xlt1i26Q+TxaKtX9gt Dr9pZ3Xg9di0qpPNY/OSeo++LasYPT5vkvO4cqSR3ePU18/sAWxRXDYpqTmZZalF+nYJXBmn /vxgL3hdWjGlfSlrA2NvdBcjJ4eEgIlE5/IVrBC2mMSFe+vZuhi5OIQEljJKfHowkx3C+cQo cWJrExOcs/3YVEa49otLGCESOxkl2rqWsEI4bxklTl3sYAapEhbwlnja+5IFxGYT0JH49v40 G4gtIqAq8XrXL2aQBmaBbUwSl699ZgJJcArYSqy/8gnMZgEq+rvxIdg6XgFTiZMrlgAdxQFk C0r83SEMcYW2xLqGM2DzmQXkJba/nQM2U0Kgm13i3YmHUN+5SKz5+poZwhaWeHV8CzuELSXx +d1eNoiGZkaJuduaWSASExglVraWQtj2EgeuzGEBWcwsoCmxfpc+iCkBdOe6JzEQJp/EjbeC ECfwSfT+fsIE0agksejMCXaIEl6JjjYhiLCHxOZ/exknMCrNQvhlFpL7ZyFsWsDIvIpRLLWg ODc9tdi0wFivODG3uDQvXS85P3cTIzhVaentYPy3wPsQowAHoxIP7wH7xxFCrIllxZW5hxgl OJiVRHjVSoFCvCmJlVWpRfnxRaU5qcWHGKU5WJTEeTVWXosQEkhPLEnNTk0tSC2CyTJxcEo1 MNq3qurFv7ntxcnVljZVPGjeoetdmj9DX0j7dzXbrGFiCHy8e4q7/PEdU7vuzJs3YdPyTZLd P7PzFRS2mKb/iNA/1tPpaTJ1h4rpuRP18UfFjHtmvW4NfKdmXPT/1pZMDXmFxo9tCXaxdybu /rvT+LieDOtuVdtfi58ElxX0fUv437RHzn6inxJLcUaioRZzUXEiAALraYBRAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprKIsWRmVeSWpSXmKPExsWy7bCSvK5k+eMIg+fHLC1urTvHanFq8jMm iyNrrzJZzDzRzmpx/vwGdouzTW/YLTY9vsZqcXnXHDaLng1bWS3WHrnLbrFs0x8mi0Vbv7Bb HH7TzurA67FpVSebx+Yl9R59W1YxenzeJOdx5Ugju8epr5/ZA9iiuGxSUnMyy1KL9O0SuDJO /fnBXvC6tGJK+1LWBsbe6C5GTg4JAROJzotLGCFsMYkL99azgdhCAtsZJZoe1UPEVSQmP7nP BmELS6z895y9i5ELqOY1o8TCaz+ZQRLCAt4ST3tfsoDYbAI6Et/enwZrEBFQlXi96xczSAOz wHomiZZrv9hBEpwCthLrr3xigpjUxSQxb/YZsA5mAU2J1u2/wYpYgLr/bnwIdh6vgKnEyRVL gOIcQLagxN8dwhAXaUusazjDAtEqL7H97RzmCYxCs5BMmoXQMQtJ1QJG5lWMoqkFxbnpucUF RnrFibnFpXnpesn5uZsYwZGllbSDcdOM8EOMAhyMSjy8P/ofRQixJpYVV+YeYpTgYFYS4VUr fRwhxJuSWFmVWpQfX1Sak1p8iFGag0VJnHd79YYIIYH0xJLU7NTUgtQimCwTB6dUA+P8lZ+X 8ph8mVrUxtL+aoPR/LPn3Z4lP1z0LHCxS891/lnpqz0uvdrxo2I3m8/Ch0wGFku8a+v63uZM iFpnbuXPGtOe/1i2atal9Rf+RytP/hC+zPyyve2Xy3Md9IrZgmY/WMaRXMTDUXJmhszK+2Ub Epi2X2z/t3vmUdf/O6Y4P32ekfVtUsVHJZbijERDLeai4kQAZNSDbKgCAAA= X-CMS-MailID: 20170404103718epcas5p172d2e1e93dbe8825a7610aaf48625c8c X-Msg-Generator: CA X-Sender-IP: 182.195.40.14 X-Local-Sender: =?UTF-8?B?U21pdGhhIFQgTXVydGh5G1NTSVItVHVybiBLZXkgU29sdXRp?= =?UTF-8?B?b25zG+yCvOyEseyghOyekBtMZWFkIEVuZ2luZWVy?= X-Global-Sender: =?UTF-8?B?U21pdGhhIFQgTXVydGh5G1NTSVItVHVybiBLZXkgU29sdXRp?= =?UTF-8?B?b25zG1NhbXN1bmcgRWxlY3Ryb25pY3MbTGVhZCBFbmdpbmVlcg==?= X-Sender-Code: =?UTF-8?B?QzEwG1NXQUhRG0MxMElEMDdJRDAxMDk5Nw==?= Content-Type: text/plain; charset="utf-8" X-MTR: 20170404103718epcas5p172d2e1e93dbe8825a7610aaf48625c8c X-EPHeader: CA CMS-TYPE: 105P X-CMS-RootMailID: 20170331090455epcas5p4fef42ffa06d0050130c6e13b91da3a6f X-RootMTR: 20170331090455epcas5p4fef42ffa06d0050130c6e13b91da3a6f References: <1490951200-32070-1-git-send-email-smitha.t@samsung.com> <1490951200-32070-12-git-send-email-smitha.t@samsung.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2017-04-03 at 10:28 +0200, Hans Verkuil wrote: > On 03/31/2017 11:06 AM, Smitha T Murthy wrote: > > Added V4l2 controls for HEVC encoder > > > > Signed-off-by: Smitha T Murthy > > --- > > Documentation/media/uapi/v4l/extended-controls.rst | 355 +++++++++++++++++++++ > > 1 file changed, 355 insertions(+) > > > > diff --git a/Documentation/media/uapi/v4l/extended-controls.rst b/Documentation/media/uapi/v4l/extended-controls.rst > > index abb1057..c2f3c5e 100644 > > --- a/Documentation/media/uapi/v4l/extended-controls.rst > > +++ b/Documentation/media/uapi/v4l/extended-controls.rst > > @@ -1960,6 +1960,361 @@ enum v4l2_vp8_golden_frame_sel - > > 1, 2 and 3 corresponding to encoder profiles 0, 1, 2 and 3. > > > > > > +HEVC Control Reference > > +--------------------- > > + > > +The HEVC controls include controls for encoding parameters of HEVC video > > +codec. > > A general question: are all these controls directly related to the HEVC specification, > or are there controls that are specific to the exynos HW implementation? > > Any exynos specific controls should be split off from the standard controls. > > Regards, > > Hans > Few of these controls are directly related to HEVC specification. But few are exynos related. I will split exynos related controls in next patch series. Regards, Smitha > > + > > + > > +.. _hevc-control-id: > > + > > +HEVC Control IDs > > +^^^^^^^^^^^^^^^ > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP`` > > + Minimum quantization parameter for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP`` > > + Maximum quantization parameter for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP`` > > + Quantization parameter for an I frame for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP`` > > + Quantization parameter for a P frame for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP`` > > + Quantization parameter for a B frame for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_QP`` > > + HIERARCHICAL_QP allows host to specify the quantization parameter values > > + for each temporal layer through HIERARCHICAL_QP_LAYER. This is valid only > > + if HIERARCHICAL_CODING_LAYER is greater than 1. > > + > > +.. _v4l2-hevc-hierarchical-coding-type: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_TYPE`` > > + (enum) > > + > > +enum v4l2_mpeg_video_hevc_hier_coding_type - > > + Selects the hierarchical coding type for encoding. Possible values are: > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_B`` > > + - Use the B frame for hierarchical coding. > > + * - ``V4L2_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_P`` > > + - Use the P frame for hierarchical coding. > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_LAYER`` > > + Selects the hierarchical coding layer. In normal encoding > > + (non-hierarchial coding), it should be zero. Possible values are 0 ~ 6. > > + 0 indicates HIERARCHICAL CODING LAYER 0, 1 indicates HIERARCHICAL CODING > > + LAYER 1 and so on. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_LAYER_QP`` > > + Indicates the hierarchical coding layer quantization parameter. > > + For HEVC it can have a value of 0-51. Hence in the control value passed > > + the LSB 16 bits will indicate the quantization parameter. The MSB 16 bit > > + will pass the layer(0-6) it is meant for. > > + > > +.. _v4l2-hevc-profile: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_PROFILE`` > > + (enum) > > + > > +enum v4l2_mpeg_video_hevc_profile - > > + Select the desired profile for HEVC encoder. > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN`` > > + - Main profile. > > + * - ``V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE`` > > + - Main still picture profile. > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > + > > +.. _v4l2-hevc-level: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LEVEL`` > > + (enum) > > + > > +enum v4l2_mpeg_video_hevc_level - > > + Select the desired level for HEVC encoder. > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_1`` > > + - Level 1.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_2`` > > + - Level 2.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1`` > > + - Level 2.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_3`` > > + - Level 3.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1`` > > + - Level 3.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_4`` > > + - Level 4.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_4_1`` > > + - Level 4.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_5`` > > + - Level 5.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1`` > > + - Level 5.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_5_2`` > > + - Level 5.2 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_6`` > > + - Level 6.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_6_1`` > > + - Level 6.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_6_2`` > > + - Level 6.2 > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_FRAME_RATE_RESOLUTION`` > > + Indicates the number of evenly spaced subintervals, called ticks, within > > + one modulo time. One modulo time represents the fixed interval of one > > + second. This is a 16bit unsigned integer and has a maximum value upto > > + 0xffff. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_TIER_FLAG`` > > + TIER_FLAG specifies tier information of the HEVC encoded picture. Tier were > > + made to deal with applications that differ in terms of maximum bit rate. > > + Setting the flag to 0 selects HEVC tier_flag as Main tier and setting this > > + flag to 1 indicates High tier. High tier is for very demanding applications > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_MAX_PARTITION_DEPTH`` > > + Selects HEVC maximum coding unit depth. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_REF_NUMBER_FOR_PFRAMES`` > > + Selects number of P reference picture required for HEVC encoder. > > + P-Frame can use 1 or 2 frames for reference. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LF`` > > + Indicates loop filtering. Control ID 0 indicates loop filtering > > + is enabled and when set to 1 indicates no filter. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LF_SLICE_BOUNDARY`` > > + Selects whether to apply the loop filter across the slice boundary or not. > > + If the value is 0, loop filter will not be applied across the slice boundary. > > + If the value is 1, loop filter will be applied across the slice boundary. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LF_BETA_OFFSET_DIV2`` > > + Selects HEVC loop filter beta offset. The valid range is [-6, +6]. > > + This could be a negative value in the 2's complement expression. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LF_TC_OFFSET_DIV2`` > > + Selects HEVC loop filter tc offset. The valid range is [-6, +6]. > > + This could be a negative value in the 2's complement expression. > > + > > +.. _v4l2-hevc-refresh-type: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE`` > > + (enum) > > + > > +enum v4l2_mpeg_video_hevc_hier_refresh_type - > > + Selects refresh type for HEVC encoder. > > + Host has to specify the period into > > + HEVC_REFRESH_PERIOD. > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_REFRESH_NONE`` > > + - Use the B frame for hierarchical coding. > > + * - ``V4L2_MPEG_VIDEO_HEVC_REFRESH_CRA`` > > + - Use CRA(Clean Random Access Unit) picture encoding. > > + * - ``V4L2_MPEG_VIDEO_HEVC_REFRESH_IDR`` > > + - Use IDR picture encoding. > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_PERIOD`` > > + Selects the refresh period for HEVC encoder. > > + This specifies the number of I picture between two CRA/IDR pictures. > > + This is valid only if REFRESH_TYPE is not 0. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LOSSLESS_CU`` > > + Indicates HEVC lossless encoding. Setting it to 0 disables lossless > > + encoding. Setting it to 1 enables lossless encoding. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_CONST_INTRA_PRED`` > > + Indicates constant intra prediction for HEVC encoder. Specifies the > > + constrained intra prediction in which intra largest coding unit(LCU) > > + prediction is performed by using residual data and decoded samples of > > + neighboring intra LCU only. Setting it to 1 enables this control ID and > > + setting it to 0 disables the control ID. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_WAVEFRONT`` > > + Indicates wavefront parallel processing for HEVC encoder. Setting it to 0 > > + disables the control ID and setting it to 1 enables the wavefront parallel > > + processing. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_SIGN_DATA_HIDING`` > > + Setting it to 1 indicates sign data hiding for HEVC encoder. Setting it to > > + 0 disables the control ID. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_GENERAL_PB`` > > + Setting the control ID to 1 enables general picture buffers for HEVC > > + encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_TEMPORAL_ID`` > > + Indicates temporal identifier specified as temporal_id in > > + nal_unit_header_svc_extension() for HEVC encoder which is enabled by > > + setting the control ID to 1. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_STRONG_SMOOTHING`` > > + Indicates bi-linear interpolation is conditionally used in the intra > > + prediction filtering process in the CVS when set to 1. Indicates bi-linear > > + interpolation is not used in the CVS when set to 0. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_MAX_NUM_MERGE_MV_MINUS1`` > > + Indicates max number of merge candidate motion vectors. > > + Values are from zero to four. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_ADAPTIVE_RC_DARK`` > > + Indicates HEVC dark region adaptive rate control. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_ADAPTIVE_RC_SMOOTH`` > > + Indicates HEVC smooth region adaptive rate control. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_ADAPTIVE_RC_STATIC`` > > + Indicates HEVC static region adaptive rate control. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_ADAPTIVE_RC_ACTIVITY`` > > + Indicates HEVC activity region adaptive rate control. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_INTRA_PU_SPLIT`` > > + Indicates intra prediction unit split for HEVC Encoder. Setting it to 1 > > + disables the feature. Setting it to 1 enables the feature. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_TMV_PREDICTION`` > > + Indicates temporal motion vector prediction for HEVC encoder. Setting it to > > + 0 enables the prediction. Setting it to 1 disables the prediction. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_WITHOUT_STARTCODE`` > > + Specifies if HEVC generates a stream with a size of length field instead of > > + start code pattern. The size of the length field is configurable among 1,2 > > + or 4 thorugh the SIZE_OF_LENGTH_FIELD. It is not applied at SEQ_START. > > + Setting it to 0 disables the control ID. Setting it to 1 will enables > > + the control ID. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_QP_INDEX_CR`` > > + Indicates the quantization parameter CR index. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_QP_INDEX_CB`` > > + Indicates the quantization parameter CB index. > > + > > +.. _v4l2-hevc-size-of-length-field: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD`` > > +(enum) > > + > > +enum v4l2_mpeg_video_hevc_size_of_length_field - > > + Indicates the size of length field. > > + This is valid when encoding WITHOUT_STARTCODE_ENABLE is enabled. > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_SIZE_0`` > > + - Generate start code pattern (Normal). > > + * - ``V4L2_MPEG_VIDEO_HEVC_SIZE_1`` > > + - Generate size of length field instead of start code pattern and length is 1. > > + * - ``V4L2_MPEG_VIDEO_HEVC_SIZE_2`` > > + - Generate size of length field instead of start code pattern and length is 2. > > + * - ``V4L2_MPEG_VIDEO_HEVC_SIZE_4`` > > + - Generate size of length field instead of start code pattern and length is 4. > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_PREPEND_SPSPPS_TO_IDR`` > > + Indicates whether to generate SPS and PPS at every IDR. Setting it to 0 > > + disables it and setting it to one enables the feature. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_LAYER_CH`` > > + Indicates hierarchical coding layer change for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER0_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 0 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER1_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 1 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER2_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 2 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER3_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 3 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER4_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 4 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER5_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 5 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER6_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 6 for HEVC encoder. > > + > > + > > .. _camera-controls: > > > > Camera Control Reference > > > > > From mboxrd@z Thu Jan 1 00:00:00 1970 From: smitha.t@samsung.com (Smitha T Murthy) Date: Tue, 04 Apr 2017 16:09:13 +0530 Subject: [Patch v3 11/11] Documention: v4l: Documentation for HEVC CIDs In-Reply-To: References: <1490951200-32070-1-git-send-email-smitha.t@samsung.com> <1490951200-32070-12-git-send-email-smitha.t@samsung.com> Message-ID: <1491302353.8493.156.camel@smitha-fedora> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, 2017-04-03 at 10:28 +0200, Hans Verkuil wrote: > On 03/31/2017 11:06 AM, Smitha T Murthy wrote: > > Added V4l2 controls for HEVC encoder > > > > Signed-off-by: Smitha T Murthy > > --- > > Documentation/media/uapi/v4l/extended-controls.rst | 355 +++++++++++++++++++++ > > 1 file changed, 355 insertions(+) > > > > diff --git a/Documentation/media/uapi/v4l/extended-controls.rst b/Documentation/media/uapi/v4l/extended-controls.rst > > index abb1057..c2f3c5e 100644 > > --- a/Documentation/media/uapi/v4l/extended-controls.rst > > +++ b/Documentation/media/uapi/v4l/extended-controls.rst > > @@ -1960,6 +1960,361 @@ enum v4l2_vp8_golden_frame_sel - > > 1, 2 and 3 corresponding to encoder profiles 0, 1, 2 and 3. > > > > > > +HEVC Control Reference > > +--------------------- > > + > > +The HEVC controls include controls for encoding parameters of HEVC video > > +codec. > > A general question: are all these controls directly related to the HEVC specification, > or are there controls that are specific to the exynos HW implementation? > > Any exynos specific controls should be split off from the standard controls. > > Regards, > > Hans > Few of these controls are directly related to HEVC specification. But few are exynos related. I will split exynos related controls in next patch series. Regards, Smitha > > + > > + > > +.. _hevc-control-id: > > + > > +HEVC Control IDs > > +^^^^^^^^^^^^^^^ > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP`` > > + Minimum quantization parameter for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP`` > > + Maximum quantization parameter for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP`` > > + Quantization parameter for an I frame for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP`` > > + Quantization parameter for a P frame for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP`` > > + Quantization parameter for a B frame for HEVC. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_QP`` > > + HIERARCHICAL_QP allows host to specify the quantization parameter values > > + for each temporal layer through HIERARCHICAL_QP_LAYER. This is valid only > > + if HIERARCHICAL_CODING_LAYER is greater than 1. > > + > > +.. _v4l2-hevc-hierarchical-coding-type: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_TYPE`` > > + (enum) > > + > > +enum v4l2_mpeg_video_hevc_hier_coding_type - > > + Selects the hierarchical coding type for encoding. Possible values are: > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_B`` > > + - Use the B frame for hierarchical coding. > > + * - ``V4L2_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_P`` > > + - Use the P frame for hierarchical coding. > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_LAYER`` > > + Selects the hierarchical coding layer. In normal encoding > > + (non-hierarchial coding), it should be zero. Possible values are 0 ~ 6. > > + 0 indicates HIERARCHICAL CODING LAYER 0, 1 indicates HIERARCHICAL CODING > > + LAYER 1 and so on. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_LAYER_QP`` > > + Indicates the hierarchical coding layer quantization parameter. > > + For HEVC it can have a value of 0-51. Hence in the control value passed > > + the LSB 16 bits will indicate the quantization parameter. The MSB 16 bit > > + will pass the layer(0-6) it is meant for. > > + > > +.. _v4l2-hevc-profile: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_PROFILE`` > > + (enum) > > + > > +enum v4l2_mpeg_video_hevc_profile - > > + Select the desired profile for HEVC encoder. > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN`` > > + - Main profile. > > + * - ``V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE`` > > + - Main still picture profile. > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > + > > +.. _v4l2-hevc-level: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LEVEL`` > > + (enum) > > + > > +enum v4l2_mpeg_video_hevc_level - > > + Select the desired level for HEVC encoder. > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_1`` > > + - Level 1.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_2`` > > + - Level 2.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1`` > > + - Level 2.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_3`` > > + - Level 3.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1`` > > + - Level 3.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_4`` > > + - Level 4.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_4_1`` > > + - Level 4.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_5`` > > + - Level 5.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1`` > > + - Level 5.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_5_2`` > > + - Level 5.2 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_6`` > > + - Level 6.0 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_6_1`` > > + - Level 6.1 > > + * - ``V4L2_MPEG_VIDEO_HEVC_LEVEL_6_2`` > > + - Level 6.2 > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_FRAME_RATE_RESOLUTION`` > > + Indicates the number of evenly spaced subintervals, called ticks, within > > + one modulo time. One modulo time represents the fixed interval of one > > + second. This is a 16bit unsigned integer and has a maximum value upto > > + 0xffff. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_TIER_FLAG`` > > + TIER_FLAG specifies tier information of the HEVC encoded picture. Tier were > > + made to deal with applications that differ in terms of maximum bit rate. > > + Setting the flag to 0 selects HEVC tier_flag as Main tier and setting this > > + flag to 1 indicates High tier. High tier is for very demanding applications > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_MAX_PARTITION_DEPTH`` > > + Selects HEVC maximum coding unit depth. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_REF_NUMBER_FOR_PFRAMES`` > > + Selects number of P reference picture required for HEVC encoder. > > + P-Frame can use 1 or 2 frames for reference. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LF`` > > + Indicates loop filtering. Control ID 0 indicates loop filtering > > + is enabled and when set to 1 indicates no filter. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LF_SLICE_BOUNDARY`` > > + Selects whether to apply the loop filter across the slice boundary or not. > > + If the value is 0, loop filter will not be applied across the slice boundary. > > + If the value is 1, loop filter will be applied across the slice boundary. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LF_BETA_OFFSET_DIV2`` > > + Selects HEVC loop filter beta offset. The valid range is [-6, +6]. > > + This could be a negative value in the 2's complement expression. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LF_TC_OFFSET_DIV2`` > > + Selects HEVC loop filter tc offset. The valid range is [-6, +6]. > > + This could be a negative value in the 2's complement expression. > > + > > +.. _v4l2-hevc-refresh-type: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE`` > > + (enum) > > + > > +enum v4l2_mpeg_video_hevc_hier_refresh_type - > > + Selects refresh type for HEVC encoder. > > + Host has to specify the period into > > + HEVC_REFRESH_PERIOD. > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_REFRESH_NONE`` > > + - Use the B frame for hierarchical coding. > > + * - ``V4L2_MPEG_VIDEO_HEVC_REFRESH_CRA`` > > + - Use CRA(Clean Random Access Unit) picture encoding. > > + * - ``V4L2_MPEG_VIDEO_HEVC_REFRESH_IDR`` > > + - Use IDR picture encoding. > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_PERIOD`` > > + Selects the refresh period for HEVC encoder. > > + This specifies the number of I picture between two CRA/IDR pictures. > > + This is valid only if REFRESH_TYPE is not 0. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_LOSSLESS_CU`` > > + Indicates HEVC lossless encoding. Setting it to 0 disables lossless > > + encoding. Setting it to 1 enables lossless encoding. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_CONST_INTRA_PRED`` > > + Indicates constant intra prediction for HEVC encoder. Specifies the > > + constrained intra prediction in which intra largest coding unit(LCU) > > + prediction is performed by using residual data and decoded samples of > > + neighboring intra LCU only. Setting it to 1 enables this control ID and > > + setting it to 0 disables the control ID. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_WAVEFRONT`` > > + Indicates wavefront parallel processing for HEVC encoder. Setting it to 0 > > + disables the control ID and setting it to 1 enables the wavefront parallel > > + processing. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_SIGN_DATA_HIDING`` > > + Setting it to 1 indicates sign data hiding for HEVC encoder. Setting it to > > + 0 disables the control ID. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_GENERAL_PB`` > > + Setting the control ID to 1 enables general picture buffers for HEVC > > + encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_TEMPORAL_ID`` > > + Indicates temporal identifier specified as temporal_id in > > + nal_unit_header_svc_extension() for HEVC encoder which is enabled by > > + setting the control ID to 1. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_STRONG_SMOOTHING`` > > + Indicates bi-linear interpolation is conditionally used in the intra > > + prediction filtering process in the CVS when set to 1. Indicates bi-linear > > + interpolation is not used in the CVS when set to 0. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_MAX_NUM_MERGE_MV_MINUS1`` > > + Indicates max number of merge candidate motion vectors. > > + Values are from zero to four. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_ADAPTIVE_RC_DARK`` > > + Indicates HEVC dark region adaptive rate control. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_ADAPTIVE_RC_SMOOTH`` > > + Indicates HEVC smooth region adaptive rate control. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_ADAPTIVE_RC_STATIC`` > > + Indicates HEVC static region adaptive rate control. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_ADAPTIVE_RC_ACTIVITY`` > > + Indicates HEVC activity region adaptive rate control. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_INTRA_PU_SPLIT`` > > + Indicates intra prediction unit split for HEVC Encoder. Setting it to 1 > > + disables the feature. Setting it to 1 enables the feature. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_TMV_PREDICTION`` > > + Indicates temporal motion vector prediction for HEVC encoder. Setting it to > > + 0 enables the prediction. Setting it to 1 disables the prediction. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_WITHOUT_STARTCODE`` > > + Specifies if HEVC generates a stream with a size of length field instead of > > + start code pattern. The size of the length field is configurable among 1,2 > > + or 4 thorugh the SIZE_OF_LENGTH_FIELD. It is not applied at SEQ_START. > > + Setting it to 0 disables the control ID. Setting it to 1 will enables > > + the control ID. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_QP_INDEX_CR`` > > + Indicates the quantization parameter CR index. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_QP_INDEX_CB`` > > + Indicates the quantization parameter CB index. > > + > > +.. _v4l2-hevc-size-of-length-field: > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD`` > > +(enum) > > + > > +enum v4l2_mpeg_video_hevc_size_of_length_field - > > + Indicates the size of length field. > > + This is valid when encoding WITHOUT_STARTCODE_ENABLE is enabled. > > + > > +.. raw:: latex > > + > > + \begin{adjustbox}{width=\columnwidth} > > + > > +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}| > > + > > +.. flat-table:: > > + :header-rows: 0 > > + :stub-columns: 0 > > + > > + * - ``V4L2_MPEG_VIDEO_HEVC_SIZE_0`` > > + - Generate start code pattern (Normal). > > + * - ``V4L2_MPEG_VIDEO_HEVC_SIZE_1`` > > + - Generate size of length field instead of start code pattern and length is 1. > > + * - ``V4L2_MPEG_VIDEO_HEVC_SIZE_2`` > > + - Generate size of length field instead of start code pattern and length is 2. > > + * - ``V4L2_MPEG_VIDEO_HEVC_SIZE_4`` > > + - Generate size of length field instead of start code pattern and length is 4. > > + > > +.. raw:: latex > > + > > + \end{adjustbox} > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_PREPEND_SPSPPS_TO_IDR`` > > + Indicates whether to generate SPS and PPS at every IDR. Setting it to 0 > > + disables it and setting it to one enables the feature. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_LAYER_CH`` > > + Indicates hierarchical coding layer change for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER0_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 0 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER1_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 1 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER2_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 2 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER3_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 3 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER4_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 4 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER5_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 5 for HEVC encoder. > > + > > +``V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER6_BITRATE`` > > + Indicates bit rate for hierarchical coding layer 6 for HEVC encoder. > > + > > + > > .. _camera-controls: > > > > Camera Control Reference > > > > >