From patchwork Tue Feb 28 15:56:41 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 9596089 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 59F54600CB for ; Tue, 28 Feb 2017 15:59:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4A2D82853E for ; Tue, 28 Feb 2017 15:59:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3E63628545; Tue, 28 Feb 2017 15:59:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA7282853E for ; Tue, 28 Feb 2017 15:59:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752125AbdB1P5w (ORCPT ); Tue, 28 Feb 2017 10:57:52 -0500 Received: from galahad.ideasonboard.com ([185.26.127.97]:44950 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751441AbdB1P5Q (ORCPT ); Tue, 28 Feb 2017 10:57:16 -0500 Received: from avalon.bb.dnainternet.fi (dfj612ybrt5fhg77mgycy-3.rev.dnainternet.fi [IPv6:2001:14ba:21f5:5b00:2e86:4862:ef6a:2804]) by galahad.ideasonboard.com (Postfix) with ESMTPSA id 766BC202B9; Tue, 28 Feb 2017 16:55:22 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1488297322; bh=uVn2FyBjzizTZsqCC9wHwiPM8i+pzalf4Boj3DZ6Xno=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NL6m1dEd6VFIKLSx0sEw6azUZA9BH1/hn8e4pBbsxGjiHlkYsL/3Rn+UFWvtXmXjR 1u0WC7NxuL3XKaDQJ25H9+M/QlasQrQcbJ+CSDFmIwTfhMw+NKNkVc5pIeMNcg8qTw CukXVW8Y7/04elzzmF/1QzH2eRqWNIzR3SM/bK9U= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?UTF-8?q?Niklas=20S=C3=B6derlund?= Subject: [PATCH v3 1/8] v4l: Add metadata buffer type and format Date: Tue, 28 Feb 2017 17:56:41 +0200 Message-Id: <20170228155648.12051-2-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170228155648.12051-1-laurent.pinchart+renesas@ideasonboard.com> References: <20170228155648.12051-1-laurent.pinchart+renesas@ideasonboard.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The metadata buffer type is used to transfer metadata between userspace and kernelspace through a V4L2 buffers queue. It comes with a new metadata capture capability and format description. Signed-off-by: Laurent Pinchart Tested-by: Guennadi Liakhovetski Acked-by: Sakari Ailus Acked-by: Hans Verkuil --- Documentation/media/uapi/v4l/buffer.rst | 3 ++ Documentation/media/uapi/v4l/dev-meta.rst | 62 ++++++++++++++++++++++++ Documentation/media/uapi/v4l/devices.rst | 1 + Documentation/media/uapi/v4l/vidioc-querycap.rst | 3 ++ Documentation/media/videodev2.h.rst.exceptions | 2 + drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 19 ++++++++ drivers/media/v4l2-core/v4l2-dev.c | 16 +++--- drivers/media/v4l2-core/v4l2-ioctl.c | 34 +++++++++++++ drivers/media/v4l2-core/videobuf2-v4l2.c | 3 ++ include/media/v4l2-ioctl.h | 17 +++++++ include/trace/events/v4l2.h | 1 + include/uapi/linux/videodev2.h | 13 +++++ 12 files changed, 168 insertions(+), 6 deletions(-) create mode 100644 Documentation/media/uapi/v4l/dev-meta.rst diff --git a/Documentation/media/uapi/v4l/buffer.rst b/Documentation/media/uapi/v4l/buffer.rst index 5c58db98ab7a..02834ce7fa4d 100644 --- a/Documentation/media/uapi/v4l/buffer.rst +++ b/Documentation/media/uapi/v4l/buffer.rst @@ -418,6 +418,9 @@ enum v4l2_buf_type - 12 - Buffer for Software Defined Radio (SDR) output stream, see :ref:`sdr`. + * - ``V4L2_BUF_TYPE_META_CAPTURE`` + - 13 + - Buffer for metadata capture, see :ref:`metadata`. diff --git a/Documentation/media/uapi/v4l/dev-meta.rst b/Documentation/media/uapi/v4l/dev-meta.rst new file mode 100644 index 000000000000..b6044c54082a --- /dev/null +++ b/Documentation/media/uapi/v4l/dev-meta.rst @@ -0,0 +1,62 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _metadata: + +****************** +Metadata Interface +****************** + +Metadata refers to any non-image data that supplements video frames with +additional information. This may include statistics computed over the image +or frame capture parameters supplied by the image source. This interface is +intended for transfer of metadata to userspace and control of that operation. + +The metadata interface is implemented on video capture device nodes. The device +can be dedicated to metadata or can implement both video and metadata capture +as specified in its reported capabilities. + +.. note:: + + This is an :ref:`experimental` interface and may + change in the future. + +Querying Capabilities +===================== + +Device nodes supporting the metadata interface set the ``V4L2_CAP_META_CAPTURE`` +flag in the ``device_caps`` field of the +:c:type:`v4l2_capability` structure returned by the :c:func:`VIDIOC_QUERYCAP` +ioctl. That flag means the device can capture metadata to memory. + +At least one of the read/write or streaming I/O methods must be supported. + + +Data Format Negotiation +======================= + +The metadata device uses the :ref:`format` ioctls to select the capture format. +The metadata buffer content format is bound to that selected format. In addition +to the basic :ref:`format` ioctls, the :c:func:`VIDIOC_ENUM_FMT` ioctl must be +supported as well. + +To use the :ref:`format` ioctls applications set the ``type`` field of the +:c:type:`v4l2_format` structure to ``V4L2_BUF_TYPE_META_CAPTURE`` and use the +:c:type:`v4l2_meta_format` ``meta`` member of the ``fmt`` union as needed per +the desired operation. Both drivers and applications must set the remainder of +the :c:type:`v4l2_format` structure to 0. + +.. _v4l2-meta-format: +.. flat-table:: struct v4l2_meta_format + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u32 + - ``dataformat`` + - The data format, set by the application. This is a little endian + :ref:`four character code `. V4L2 defines metadata formats + in :ref:`meta-formats`. + * - __u32 + - ``buffersize`` + - Maximum buffer size in bytes required for data. The value is set by the + driver. diff --git a/Documentation/media/uapi/v4l/devices.rst b/Documentation/media/uapi/v4l/devices.rst index 5c3d6c29e12c..fb7f8c26cf09 100644 --- a/Documentation/media/uapi/v4l/devices.rst +++ b/Documentation/media/uapi/v4l/devices.rst @@ -25,3 +25,4 @@ Interfaces dev-touch dev-event dev-subdev + dev-meta diff --git a/Documentation/media/uapi/v4l/vidioc-querycap.rst b/Documentation/media/uapi/v4l/vidioc-querycap.rst index 165d8314327e..12e0d9a63cd8 100644 --- a/Documentation/media/uapi/v4l/vidioc-querycap.rst +++ b/Documentation/media/uapi/v4l/vidioc-querycap.rst @@ -236,6 +236,9 @@ specification the ioctl returns an ``EINVAL`` error code. * - ``V4L2_CAP_SDR_OUTPUT`` - 0x00400000 - The device supports the :ref:`SDR Output ` interface. + * - ``V4L2_CAP_META_CAPTURE`` + - 0x00800000 + - The device supports the :ref:`metadata` capture interface. * - ``V4L2_CAP_READWRITE`` - 0x01000000 - The device supports the :ref:`read() ` and/or diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions index e11a0d0a8931..c9c611b18ba1 100644 --- a/Documentation/media/videodev2.h.rst.exceptions +++ b/Documentation/media/videodev2.h.rst.exceptions @@ -27,6 +27,7 @@ replace symbol V4L2_FIELD_SEQ_TB :c:type:`v4l2_field` replace symbol V4L2_FIELD_TOP :c:type:`v4l2_field` # Documented enum v4l2_buf_type +replace symbol V4L2_BUF_TYPE_META_CAPTURE :c:type:`v4l2_buf_type` replace symbol V4L2_BUF_TYPE_SDR_CAPTURE :c:type:`v4l2_buf_type` replace symbol V4L2_BUF_TYPE_SDR_OUTPUT :c:type:`v4l2_buf_type` replace symbol V4L2_BUF_TYPE_SLICED_VBI_CAPTURE :c:type:`v4l2_buf_type` @@ -152,6 +153,7 @@ replace define V4L2_CAP_MODULATOR device-capabilities replace define V4L2_CAP_SDR_CAPTURE device-capabilities replace define V4L2_CAP_EXT_PIX_FORMAT device-capabilities replace define V4L2_CAP_SDR_OUTPUT device-capabilities +replace define V4L2_CAP_META_CAPTURE device-capabilities replace define V4L2_CAP_READWRITE device-capabilities replace define V4L2_CAP_ASYNCIO device-capabilities replace define V4L2_CAP_STREAMING device-capabilities diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index eac9565dc3d8..9f610e979954 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -161,6 +161,20 @@ static inline int put_v4l2_sdr_format(struct v4l2_sdr_format *kp, struct v4l2_sd return 0; } +static inline int get_v4l2_meta_format(struct v4l2_meta_format *kp, struct v4l2_meta_format __user *up) +{ + if (copy_from_user(kp, up, sizeof(struct v4l2_meta_format))) + return -EFAULT; + return 0; +} + +static inline int put_v4l2_meta_format(struct v4l2_meta_format *kp, struct v4l2_meta_format __user *up) +{ + if (copy_to_user(up, kp, sizeof(struct v4l2_meta_format))) + return -EFAULT; + return 0; +} + struct v4l2_format32 { __u32 type; /* enum v4l2_buf_type */ union { @@ -170,6 +184,7 @@ struct v4l2_format32 { struct v4l2_vbi_format vbi; struct v4l2_sliced_vbi_format sliced; struct v4l2_sdr_format sdr; + struct v4l2_meta_format meta; __u8 raw_data[200]; /* user-defined */ } fmt; }; @@ -216,6 +231,8 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us case V4L2_BUF_TYPE_SDR_CAPTURE: case V4L2_BUF_TYPE_SDR_OUTPUT: return get_v4l2_sdr_format(&kp->fmt.sdr, &up->fmt.sdr); + case V4L2_BUF_TYPE_META_CAPTURE: + return get_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", kp->type); @@ -263,6 +280,8 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us case V4L2_BUF_TYPE_SDR_CAPTURE: case V4L2_BUF_TYPE_SDR_OUTPUT: return put_v4l2_sdr_format(&kp->fmt.sdr, &up->fmt.sdr); + case V4L2_BUF_TYPE_META_CAPTURE: + return put_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", kp->type); diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index fa2124cb31bd..c647ba648805 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -575,30 +575,34 @@ static void determine_valid_ioctls(struct video_device *vdev) set_bit(_IOC_NR(VIDIOC_ENUM_FREQ_BANDS), valid_ioctls); if (is_vid || is_tch) { - /* video specific ioctls */ + /* video and metadata specific ioctls */ if ((is_rx && (ops->vidioc_enum_fmt_vid_cap || ops->vidioc_enum_fmt_vid_cap_mplane || - ops->vidioc_enum_fmt_vid_overlay)) || + ops->vidioc_enum_fmt_vid_overlay || + ops->vidioc_enum_fmt_meta_cap)) || (is_tx && (ops->vidioc_enum_fmt_vid_out || ops->vidioc_enum_fmt_vid_out_mplane))) set_bit(_IOC_NR(VIDIOC_ENUM_FMT), valid_ioctls); if ((is_rx && (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane || - ops->vidioc_g_fmt_vid_overlay)) || + ops->vidioc_g_fmt_vid_overlay || + ops->vidioc_g_fmt_meta_cap)) || (is_tx && (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane || ops->vidioc_g_fmt_vid_out_overlay))) set_bit(_IOC_NR(VIDIOC_G_FMT), valid_ioctls); if ((is_rx && (ops->vidioc_s_fmt_vid_cap || ops->vidioc_s_fmt_vid_cap_mplane || - ops->vidioc_s_fmt_vid_overlay)) || + ops->vidioc_s_fmt_vid_overlay || + ops->vidioc_s_fmt_meta_cap)) || (is_tx && (ops->vidioc_s_fmt_vid_out || ops->vidioc_s_fmt_vid_out_mplane || ops->vidioc_s_fmt_vid_out_overlay))) set_bit(_IOC_NR(VIDIOC_S_FMT), valid_ioctls); if ((is_rx && (ops->vidioc_try_fmt_vid_cap || ops->vidioc_try_fmt_vid_cap_mplane || - ops->vidioc_try_fmt_vid_overlay)) || + ops->vidioc_try_fmt_vid_overlay || + ops->vidioc_try_fmt_meta_cap)) || (is_tx && (ops->vidioc_try_fmt_vid_out || ops->vidioc_try_fmt_vid_out_mplane || ops->vidioc_try_fmt_vid_out_overlay))) @@ -664,7 +668,7 @@ static void determine_valid_ioctls(struct video_device *vdev) } if (is_vid || is_vbi || is_sdr || is_tch) { - /* ioctls valid for video, vbi or sdr */ + /* ioctls valid for video, metadata, vbi or sdr */ SET_VALID_IOCTL(ops, VIDIOC_REQBUFS, vidioc_reqbufs); SET_VALID_IOCTL(ops, VIDIOC_QUERYBUF, vidioc_querybuf); SET_VALID_IOCTL(ops, VIDIOC_QBUF, vidioc_qbuf); diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 0c3f238a2e76..44a29af6fed2 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -155,6 +155,7 @@ const char *v4l2_type_names[] = { [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", + [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", }; EXPORT_SYMBOL(v4l2_type_names); @@ -246,6 +247,7 @@ static void v4l_print_format(const void *arg, bool write_only) const struct v4l2_sliced_vbi_format *sliced; const struct v4l2_window *win; const struct v4l2_sdr_format *sdr; + const struct v4l2_meta_format *meta; unsigned i; pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); @@ -325,6 +327,15 @@ static void v4l_print_format(const void *arg, bool write_only) (sdr->pixelformat >> 16) & 0xff, (sdr->pixelformat >> 24) & 0xff); break; + case V4L2_BUF_TYPE_META_CAPTURE: + meta = &p->fmt.meta; + pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n", + (meta->dataformat >> 0) & 0xff, + (meta->dataformat >> 8) & 0xff, + (meta->dataformat >> 16) & 0xff, + (meta->dataformat >> 24) & 0xff, + meta->buffersize); + break; } } @@ -943,6 +954,10 @@ static int check_fmt(struct file *file, enum v4l2_buf_type type) if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) return 0; break; + case V4L2_BUF_TYPE_META_CAPTURE: + if (is_vid && is_rx && ops->vidioc_g_fmt_meta_cap) + return 0; + break; default: break; } @@ -1326,6 +1341,11 @@ static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, break; ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); break; + case V4L2_BUF_TYPE_META_CAPTURE: + if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_meta_cap)) + break; + ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); + break; } if (ret == 0) v4l_fill_fmtdesc(p); @@ -1425,6 +1445,10 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, if (unlikely(!is_tx || !is_sdr || !ops->vidioc_g_fmt_sdr_out)) break; return ops->vidioc_g_fmt_sdr_out(file, fh, arg); + case V4L2_BUF_TYPE_META_CAPTURE: + if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_meta_cap)) + break; + return ops->vidioc_g_fmt_meta_cap(file, fh, arg); } return -EINVAL; } @@ -1530,6 +1554,11 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_s_fmt_sdr_out(file, fh, arg); + case V4L2_BUF_TYPE_META_CAPTURE: + if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_meta_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.meta); + return ops->vidioc_s_fmt_meta_cap(file, fh, arg); } return -EINVAL; } @@ -1615,6 +1644,11 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_try_fmt_sdr_out(file, fh, arg); + case V4L2_BUF_TYPE_META_CAPTURE: + if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_meta_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.meta); + return ops->vidioc_try_fmt_meta_cap(file, fh, arg); } return -EINVAL; } diff --git a/drivers/media/v4l2-core/videobuf2-v4l2.c b/drivers/media/v4l2-core/videobuf2-v4l2.c index 3529849d2218..0c0669976bdc 100644 --- a/drivers/media/v4l2-core/videobuf2-v4l2.c +++ b/drivers/media/v4l2-core/videobuf2-v4l2.c @@ -544,6 +544,9 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create) case V4L2_BUF_TYPE_SDR_OUTPUT: requested_sizes[0] = f->fmt.sdr.buffersize; break; + case V4L2_BUF_TYPE_META_CAPTURE: + requested_sizes[0] = f->fmt.meta.buffersize; + break; default: return -EINVAL; } diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h index 574ff2ae94be..b6433cc5964b 100644 --- a/include/media/v4l2-ioctl.h +++ b/include/media/v4l2-ioctl.h @@ -43,6 +43,9 @@ struct v4l2_fh; * @vidioc_enum_fmt_sdr_out: pointer to the function that implements * :ref:`VIDIOC_ENUM_FMT ` ioctl logic * for Software Defined Radio output + * @vidioc_enum_fmt_meta_cap: pointer to the function that implements + * :ref:`VIDIOC_ENUM_FMT ` ioctl logic + * for metadata capture * @vidioc_g_fmt_vid_cap: pointer to the function that implements * :ref:`VIDIOC_G_FMT ` ioctl logic for video capture * in single plane mode @@ -73,6 +76,8 @@ struct v4l2_fh; * @vidioc_g_fmt_sdr_out: pointer to the function that implements * :ref:`VIDIOC_G_FMT ` ioctl logic for Software Defined * Radio output + * @vidioc_g_fmt_meta_cap: pointer to the function that implements + * :ref:`VIDIOC_G_FMT ` ioctl logic for metadata capture * @vidioc_s_fmt_vid_cap: pointer to the function that implements * :ref:`VIDIOC_S_FMT ` ioctl logic for video capture * in single plane mode @@ -103,6 +108,8 @@ struct v4l2_fh; * @vidioc_s_fmt_sdr_out: pointer to the function that implements * :ref:`VIDIOC_S_FMT ` ioctl logic for Software Defined * Radio output + * @vidioc_s_fmt_meta_cap: pointer to the function that implements + * :ref:`VIDIOC_S_FMT ` ioctl logic for metadata capture * @vidioc_try_fmt_vid_cap: pointer to the function that implements * :ref:`VIDIOC_TRY_FMT ` ioctl logic for video capture * in single plane mode @@ -135,6 +142,8 @@ struct v4l2_fh; * @vidioc_try_fmt_sdr_out: pointer to the function that implements * :ref:`VIDIOC_TRY_FMT ` ioctl logic for Software Defined * Radio output + * @vidioc_try_fmt_meta_cap: pointer to the function that implements + * :ref:`VIDIOC_TRY_FMT ` ioctl logic for metadata capture * @vidioc_reqbufs: pointer to the function that implements * :ref:`VIDIOC_REQBUFS ` ioctl * @vidioc_querybuf: pointer to the function that implements @@ -305,6 +314,8 @@ struct v4l2_ioctl_ops { struct v4l2_fmtdesc *f); int (*vidioc_enum_fmt_sdr_out)(struct file *file, void *fh, struct v4l2_fmtdesc *f); + int (*vidioc_enum_fmt_meta_cap)(struct file *file, void *fh, + struct v4l2_fmtdesc *f); /* VIDIOC_G_FMT handlers */ int (*vidioc_g_fmt_vid_cap)(struct file *file, void *fh, @@ -331,6 +342,8 @@ struct v4l2_ioctl_ops { struct v4l2_format *f); int (*vidioc_g_fmt_sdr_out)(struct file *file, void *fh, struct v4l2_format *f); + int (*vidioc_g_fmt_meta_cap)(struct file *file, void *fh, + struct v4l2_format *f); /* VIDIOC_S_FMT handlers */ int (*vidioc_s_fmt_vid_cap)(struct file *file, void *fh, @@ -357,6 +370,8 @@ struct v4l2_ioctl_ops { struct v4l2_format *f); int (*vidioc_s_fmt_sdr_out)(struct file *file, void *fh, struct v4l2_format *f); + int (*vidioc_s_fmt_meta_cap)(struct file *file, void *fh, + struct v4l2_format *f); /* VIDIOC_TRY_FMT handlers */ int (*vidioc_try_fmt_vid_cap)(struct file *file, void *fh, @@ -383,6 +398,8 @@ struct v4l2_ioctl_ops { struct v4l2_format *f); int (*vidioc_try_fmt_sdr_out)(struct file *file, void *fh, struct v4l2_format *f); + int (*vidioc_try_fmt_meta_cap)(struct file *file, void *fh, + struct v4l2_format *f); /* Buffer handlers */ int (*vidioc_reqbufs)(struct file *file, void *fh, diff --git a/include/trace/events/v4l2.h b/include/trace/events/v4l2.h index ee7754c6e4a1..b3a85b3df53e 100644 --- a/include/trace/events/v4l2.h +++ b/include/trace/events/v4l2.h @@ -29,6 +29,7 @@ EM( V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE, "VIDEO_OUTPUT_MPLANE" ) \ EM( V4L2_BUF_TYPE_SDR_CAPTURE, "SDR_CAPTURE" ) \ EM( V4L2_BUF_TYPE_SDR_OUTPUT, "SDR_OUTPUT" ) \ + EM( V4L2_BUF_TYPE_META_CAPTURE, "META_CAPTURE" ) \ EMe(V4L2_BUF_TYPE_PRIVATE, "PRIVATE" ) SHOW_TYPE diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 45184a2ef66c..1eea1b5d71c1 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -143,6 +143,7 @@ enum v4l2_buf_type { V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE = 10, V4L2_BUF_TYPE_SDR_CAPTURE = 11, V4L2_BUF_TYPE_SDR_OUTPUT = 12, + V4L2_BUF_TYPE_META_CAPTURE = 13, /* Deprecated, do not use */ V4L2_BUF_TYPE_PRIVATE = 0x80, }; @@ -453,6 +454,7 @@ struct v4l2_capability { #define V4L2_CAP_SDR_CAPTURE 0x00100000 /* Is a SDR capture device */ #define V4L2_CAP_EXT_PIX_FORMAT 0x00200000 /* Supports the extended pixel format */ #define V4L2_CAP_SDR_OUTPUT 0x00400000 /* Is a SDR output device */ +#define V4L2_CAP_META_CAPTURE 0x00800000 /* Is a metadata capture device */ #define V4L2_CAP_READWRITE 0x01000000 /* read/write systemcalls */ #define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */ @@ -2087,6 +2089,16 @@ struct v4l2_sdr_format { } __attribute__ ((packed)); /** + * struct v4l2_meta_format - metadata format definition + * @dataformat: little endian four character code (fourcc) + * @buffersize: maximum size in bytes required for data + */ +struct v4l2_meta_format { + __u32 dataformat; + __u32 buffersize; +} __attribute__ ((packed)); + +/** * struct v4l2_format - stream data format * @type: enum v4l2_buf_type; type of the data stream * @pix: definition of an image format @@ -2105,6 +2117,7 @@ struct v4l2_format { struct v4l2_vbi_format vbi; /* V4L2_BUF_TYPE_VBI_CAPTURE */ struct v4l2_sliced_vbi_format sliced; /* V4L2_BUF_TYPE_SLICED_VBI_CAPTURE */ struct v4l2_sdr_format sdr; /* V4L2_BUF_TYPE_SDR_CAPTURE */ + struct v4l2_meta_format meta; /* V4L2_BUF_TYPE_META_CAPTURE */ __u8 raw_data[200]; /* user-defined */ } fmt; };