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Message-ID: <c08eb020-d09c-8046-be73-4b146f9a0d5b@xs4all.nl>
Date: Tue, 21 Jul 2020 12:37:47 +0200
From: Hans Verkuil <hverkuil@...all.nl>
To: Helen Koike <helen.koike@...labora.com>, mchehab@...nel.org,
hans.verkuil@...co.com, laurent.pinchart@...asonboard.com,
sakari.ailus@....fi, linux-media@...r.kernel.org
Cc: Boris Brezillon <boris.brezillon@...labora.com>,
tfiga@...omium.org, hiroh@...omium.org, nicolas@...fresne.ca,
Brian.Starkey@....com, kernel@...labora.com,
narmstrong@...libre.com, linux-kernel@...r.kernel.org,
frkoenig@...omium.org, mjourdan@...libre.com,
stanimir.varbanov@...aro.org
Subject: Re: [PATCH v4 1/6] media: v4l2: Extend pixel formats to unify
single/multi-planar handling (and more)
On 17/07/2020 13:54, Helen Koike wrote:
> From: Boris Brezillon <boris.brezillon@...labora.com>
>
> This is part of the multiplanar and singleplanar unification process.
> v4l2_ext_pix_format is supposed to work for both cases.
>
> We also add the concept of modifiers already employed in DRM to expose
> HW-specific formats (like tiled or compressed formats) and allow
> exchanging this information with the DRM subsystem in a consistent way.
>
> Note that only V4L2_BUF_TYPE_VIDEO_[OUTPUT,CAPTURE] are accepted in
> v4l2_ext_format, other types will be rejected if you use the {G,S,TRY}EXT_FMT
> ioctls.
>
> New hooks have been added to v4l2_ioctl_ops to support those new ioctls
> in drivers, but, in the meantime, the core takes care of converting
> {S,G,TRY}_EXT_FMT requests into {S,G,TRY}_FMT so that old drivers can
> still work if the userspace app/lib uses the new ioctls.
> The conversion is also done the other around to allow userspace
> apps/libs using {S,G,TRY}_FMT to work with drivers implementing the
> _ext_ hooks.
>
> Signed-off-by: Boris Brezillon <boris.brezillon@...labora.com>
> Signed-off-by: Helen Koike <helen.koike@...labora.com>
> ---
> Changes in v4:
> - Use v4l2_ext_pix_format directly in the ioctl, drop v4l2_ext_format,
> making V4L2_BUF_TYPE_VIDEO_[OUTPUT,CAPTURE] the only valid types.
> - Add reserved fields
> - Removed num_planes from struct v4l2_ext_pix_format
> - Removed flag field from struct v4l2_ext_pix_format, since the only
> defined value is V4L2_PIX_FMT_FLAG_PREMUL_ALPHA only used by vsp1,
> where we can use modifiers, or add it back later through the reserved
> bits.
> - In v4l2_ext_format_to_format(), check if modifier is != MOD_LINEAR &&
> != MOD_INVALID
> - Fix type assignment in v4l_g_fmt_ext_pix()
> - Rebased on top of media/master (post 5.8-rc1)
>
> Changes in v3:
> - Rebased on top of media/master (post 5.4-rc1)
>
> Changes in v2:
> - Move the modifier in v4l2_ext_format (was formerly placed in
> v4l2_ext_plane)
> - Fix a few bugs in the converters and add a strict parameter to
> allow conversion of uninitialized/mis-initialized objects
> ---
> drivers/media/v4l2-core/v4l2-dev.c | 21 +-
> drivers/media/v4l2-core/v4l2-ioctl.c | 585 +++++++++++++++++++++++----
> include/media/v4l2-ioctl.h | 34 ++
> include/uapi/linux/videodev2.h | 55 +++
> 4 files changed, 614 insertions(+), 81 deletions(-)
>
> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> index a593ea0598b55..e1829906bc086 100644
> --- a/drivers/media/v4l2-core/v4l2-dev.c
> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> @@ -607,25 +607,37 @@ static void determine_valid_ioctls(struct video_device *vdev)
> 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_ext_pix_fmt_vid_cap ||
> ops->vidioc_g_fmt_vid_overlay)) ||
> (is_tx && (ops->vidioc_g_fmt_vid_out ||
> ops->vidioc_g_fmt_vid_out_mplane ||
> - ops->vidioc_g_fmt_vid_out_overlay)))
> + ops->vidioc_g_ext_pix_fmt_vid_out ||
> + ops->vidioc_g_fmt_vid_out_overlay))) {
> set_bit(_IOC_NR(VIDIOC_G_FMT), valid_ioctls);
> + set_bit(_IOC_NR(VIDIOC_G_EXT_PIX_FMT), valid_ioctls);
> + }
> if ((is_rx && (ops->vidioc_s_fmt_vid_cap ||
> ops->vidioc_s_fmt_vid_cap_mplane ||
> + ops->vidioc_s_ext_pix_fmt_vid_cap ||
> ops->vidioc_s_fmt_vid_overlay)) ||
> (is_tx && (ops->vidioc_s_fmt_vid_out ||
> ops->vidioc_s_fmt_vid_out_mplane ||
> - ops->vidioc_s_fmt_vid_out_overlay)))
> + ops->vidioc_s_ext_pix_fmt_vid_out ||
> + ops->vidioc_s_fmt_vid_out_overlay))) {
> set_bit(_IOC_NR(VIDIOC_S_FMT), valid_ioctls);
> + set_bit(_IOC_NR(VIDIOC_S_EXT_PIX_FMT), valid_ioctls);
> + }
> if ((is_rx && (ops->vidioc_try_fmt_vid_cap ||
> ops->vidioc_try_fmt_vid_cap_mplane ||
> + ops->vidioc_try_ext_pix_fmt_vid_cap ||
> ops->vidioc_try_fmt_vid_overlay)) ||
> (is_tx && (ops->vidioc_try_fmt_vid_out ||
> ops->vidioc_try_fmt_vid_out_mplane ||
> - ops->vidioc_try_fmt_vid_out_overlay)))
> + ops->vidioc_try_ext_pix_fmt_vid_out ||
> + ops->vidioc_try_fmt_vid_out_overlay))) {
> set_bit(_IOC_NR(VIDIOC_TRY_FMT), valid_ioctls);
> + set_bit(_IOC_NR(VIDIOC_TRY_EXT_PIX_FMT), valid_ioctls);
> + }
> SET_VALID_IOCTL(ops, VIDIOC_OVERLAY, vidioc_overlay);
> SET_VALID_IOCTL(ops, VIDIOC_G_FBUF, vidioc_g_fbuf);
> SET_VALID_IOCTL(ops, VIDIOC_S_FBUF, vidioc_s_fbuf);
> @@ -682,8 +694,11 @@ static void determine_valid_ioctls(struct video_device *vdev)
> /* touch specific ioctls */
> SET_VALID_IOCTL(ops, VIDIOC_ENUM_FMT, vidioc_enum_fmt_vid_cap);
> SET_VALID_IOCTL(ops, VIDIOC_G_FMT, vidioc_g_fmt_vid_cap);
> + SET_VALID_IOCTL(ops, VIDIOC_G_EXT_PIX_FMT, vidioc_g_fmt_vid_cap);
> SET_VALID_IOCTL(ops, VIDIOC_S_FMT, vidioc_s_fmt_vid_cap);
> + SET_VALID_IOCTL(ops, VIDIOC_S_EXT_PIX_FMT, vidioc_s_fmt_vid_cap);
> SET_VALID_IOCTL(ops, VIDIOC_TRY_FMT, vidioc_try_fmt_vid_cap);
> + SET_VALID_IOCTL(ops, VIDIOC_TRY_EXT_PIX_FMT, vidioc_try_fmt_vid_cap);
> SET_VALID_IOCTL(ops, VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes);
> SET_VALID_IOCTL(ops, VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals);
> SET_VALID_IOCTL(ops, VIDIOC_ENUMINPUT, vidioc_enum_input);
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 02bfef0da76da..3b77433f6c32b 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -17,6 +17,8 @@
>
> #include <linux/videodev2.h>
>
> +#include <drm/drm_fourcc.h>
> +
> #include <media/v4l2-common.h>
> #include <media/v4l2-ioctl.h>
> #include <media/v4l2-ctrls.h>
> @@ -378,6 +380,27 @@ static void v4l_print_format(const void *arg, bool write_only)
> }
> }
>
> +static void v4l_print_ext_pix_format(const void *arg, bool write_only)
> +{
> + const struct v4l2_ext_pix_format *pix = arg;
> + unsigned int i;
> +
> + pr_cont("type=%s, width=%u, height=%u, format=%c%c%c%c, modifier %llx, field=%s, colorspace=%d, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
> + prt_names(pix->type, v4l2_type_names),
> + pix->width, pix->height,
> + (pix->pixelformat & 0xff),
> + (pix->pixelformat >> 8) & 0xff,
> + (pix->pixelformat >> 16) & 0xff,
> + (pix->pixelformat >> 24) & 0xff,
> + pix->modifier, prt_names(pix->field, v4l2_field_names),
> + pix->colorspace, pix->ycbcr_enc,
> + pix->quantization, pix->xfer_func);
> + for (i = 0; i < VIDEO_MAX_PLANES && pix->plane_fmt[i].sizeimage; i++)
> + pr_debug("plane %u: bytesperline=%u sizeimage=%u\n",
> + i, pix->plane_fmt[i].bytesperline,
> + pix->plane_fmt[i].sizeimage);
> +}
> +
> static void v4l_print_framebuffer(const void *arg, bool write_only)
> {
> const struct v4l2_framebuffer *p = arg;
> @@ -958,11 +981,15 @@ static int check_fmt(struct file *file, enum v4l2_buf_type type)
> switch (type) {
> case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> if ((is_vid || is_tch) && is_rx &&
> - (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
> + (ops->vidioc_g_fmt_vid_cap ||
> + ops->vidioc_g_ext_pix_fmt_vid_cap ||
> + ops->vidioc_g_fmt_vid_cap_mplane))
> return 0;
> break;
> case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> - if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
> + if ((is_vid || is_tch) && is_rx &&
> + (ops->vidioc_g_fmt_vid_cap_mplane ||
> + ops->vidioc_g_ext_pix_fmt_vid_cap))
> return 0;
> break;
> case V4L2_BUF_TYPE_VIDEO_OVERLAY:
> @@ -971,11 +998,15 @@ static int check_fmt(struct file *file, enum v4l2_buf_type type)
> break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> if (is_vid && is_tx &&
> - (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
> + (ops->vidioc_g_fmt_vid_out ||
> + ops->vidioc_g_ext_pix_fmt_vid_out ||
> + ops->vidioc_g_fmt_vid_out_mplane))
> return 0;
> break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> - if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
> + if (is_vid && is_tx &&
> + (ops->vidioc_g_ext_pix_fmt_vid_out ||
> + ops->vidioc_g_fmt_vid_out_mplane))
> return 0;
> break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
> @@ -1055,6 +1086,134 @@ static void v4l_sanitize_format(struct v4l2_format *fmt)
> sizeof(fmt->fmt.pix) - offset);
> }
>
> +int v4l2_ext_pix_format_to_format(const struct v4l2_ext_pix_format *e,
> + struct v4l2_format *f, bool mplane_cap,
> + bool strict)
> +{
> + const struct v4l2_plane_ext_pix_format *pe;
> + struct v4l2_plane_pix_format *p;
> + unsigned int i;
> +
> + memset(f, 0, sizeof(*f));
> +
> + /*
> + * Make sure no modifier is required before doing the
> + * conversion.
> + */
> + if (e->modifier && strict &&
> + e->modifier != DRM_FORMAT_MOD_LINEAR &&
> + e->modifier != DRM_FORMAT_MOD_INVALID)
> + return -EINVAL;
> +
> + if (!e->plane_fmt[0].sizeimage && strict)
> + return -EINVAL;
> +
> + if (e->plane_fmt[1].sizeimage && !mplane_cap && strict)
> + return 0;
> +
> + if (!mplane_cap) {
> + f->fmt.pix.width = e->width;
> + f->fmt.pix.height = e->height;
> + f->fmt.pix.pixelformat = e->pixelformat;
> + f->fmt.pix.field = e->field;
> + f->fmt.pix.colorspace = e->colorspace;
> + f->fmt.pix.ycbcr_enc = e->ycbcr_enc;
> + f->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + f->fmt.pix.quantization = e->quantization;
> + pe = &e->plane_fmt[0];
> + f->fmt.pix.bytesperline = pe->bytesperline;
> + f->fmt.pix.sizeimage = pe->sizeimage;
> + f->type = e->type;
> + return 0;
> + }
> +
> + f->fmt.pix_mp.width = e->width;
> + f->fmt.pix_mp.height = e->height;
> + f->fmt.pix_mp.pixelformat = e->pixelformat;
> + f->fmt.pix_mp.field = e->field;
> + f->fmt.pix_mp.colorspace = e->colorspace;
> + f->fmt.pix_mp.ycbcr_enc = e->ycbcr_enc;
> + f->fmt.pix_mp.quantization = e->quantization;
> + if (e->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> + else
> + f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
> +
> + for (i = 0; i < VIDEO_MAX_PLANES; i++) {
> + pe = &e->plane_fmt[i];
> + p = &f->fmt.pix_mp.plane_fmt[i];
> + p->bytesperline = pe->bytesperline;
> + p->sizeimage = pe->sizeimage;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(v4l2_ext_pix_format_to_format);
> +
> +int v4l2_format_to_ext_pix_format(const struct v4l2_format *f,
> + struct v4l2_ext_pix_format *e, bool strict)
> +{
> + const struct v4l2_plane_pix_format *p;
> + struct v4l2_plane_ext_pix_format *pe;
> + unsigned int i;
> +
> + memset(e, 0, sizeof(*e));
> +
> + switch (f->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + e->width = f->fmt.pix.width;
> + e->height = f->fmt.pix.height;
> + e->pixelformat = f->fmt.pix.pixelformat;
> + e->field = f->fmt.pix.field;
> + e->colorspace = f->fmt.pix.colorspace;
> + if (f->fmt.pix.flags)
> + pr_warn("Ignoring pixelformat flags 0x%x\n",
> + f->fmt.pix.flags);
> + e->ycbcr_enc = f->fmt.pix.ycbcr_enc;
> + e->quantization = f->fmt.pix.quantization;
> + e->plane_fmt[0].bytesperline = f->fmt.pix.bytesperline;
> + e->plane_fmt[0].sizeimage = f->fmt.pix.sizeimage;
> + e->type = f->type;
> + break;
> +
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> + if ((f->fmt.pix_mp.num_planes > VIDEO_MAX_PLANES ||
> + !f->fmt.pix_mp.num_planes) && strict)
> + return -EINVAL;
> +
> + e->width = f->fmt.pix_mp.width;
> + e->height = f->fmt.pix_mp.height;
> + e->pixelformat = f->fmt.pix_mp.pixelformat;
> + e->field = f->fmt.pix_mp.field;
> + e->colorspace = f->fmt.pix_mp.colorspace;
> + if (f->fmt.pix.flags)
> + pr_warn("Ignoring pixelformat flags 0x%x\n",
> + f->fmt.pix.flags);
> + e->ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
> + e->quantization = f->fmt.pix_mp.quantization;
> + if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
> + e->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> + else
> + e->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> +
> + for (i = 0; i < VIDEO_MAX_PLANES; i++) {
> + pe = &e->plane_fmt[i];
> + p = &f->fmt.pix_mp.plane_fmt[i];
> + pe->bytesperline = p->bytesperline;
> + pe->sizeimage = p->sizeimage;
> + }
> + break;
> +
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(v4l2_format_to_ext_pix_format);
> +
> static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -1558,6 +1717,38 @@ static void v4l_pix_format_touch(struct v4l2_pix_format *p)
> p->xfer_func = 0;
> }
>
> +static int v4l_g_fmt_ext_pix(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct v4l2_ext_pix_format ef;
> + int ret;
> +
> + switch (f->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> + ef.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> + ret = ops->vidioc_g_ext_pix_fmt_vid_cap(file, fh, &ef);
> + break;
> +
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> + ef.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> + ret = ops->vidioc_g_ext_pix_fmt_vid_out(file, fh, &ef);
> + break;
> +
> + default:
> + return -EINVAL;
> + }
> +
> + if (ret)
> + return ret;
> +
> + return v4l2_ext_pix_format_to_format(&ef, f,
> + V4L2_TYPE_IS_MULTIPLANAR(f->type),
> + true);
> +}
> +
> static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -1594,17 +1785,27 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
>
> switch (p->type) {
> case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> - if (unlikely(!ops->vidioc_g_fmt_vid_cap))
> - break;
> - p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> - ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
> - /* just in case the driver zeroed it again */
> - p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> - if (vfd->vfl_type == VFL_TYPE_TOUCH)
> - v4l_pix_format_touch(&p->fmt.pix);
> - return ret;
> + if (ops->vidioc_g_fmt_vid_cap) {
> + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
> + /* just in case the driver zeroed it again */
> + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + if (vfd->vfl_type == VFL_TYPE_TOUCH)
> + v4l_pix_format_touch(&p->fmt.pix);
> + return ret;
> + } else if (ops->vidioc_g_ext_pix_fmt_vid_cap) {
> + ret = v4l_g_fmt_ext_pix(ops, file, fh, p);
> + if (vfd->vfl_type == VFL_TYPE_TOUCH)
> + v4l_pix_format_touch(&p->fmt.pix);
> + return ret;
> + }
> + break;
> case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> - return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
> + if (ops->vidioc_g_fmt_vid_cap_mplane)
> + return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
> + else if (ops->vidioc_g_ext_pix_fmt_vid_cap)
> + return v4l_g_fmt_ext_pix(ops, file, fh, p);
> + break;
> case V4L2_BUF_TYPE_VIDEO_OVERLAY:
> return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
> case V4L2_BUF_TYPE_VBI_CAPTURE:
> @@ -1612,15 +1813,22 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
> case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
> return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
> case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> - if (unlikely(!ops->vidioc_g_fmt_vid_out))
> - break;
> - p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> - ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
> - /* just in case the driver zeroed it again */
> - p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> - return ret;
> + if (ops->vidioc_g_fmt_vid_out) {
> + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
> + /* just in case the driver zeroed it again */
> + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + return ret;
> + } else if (ops->vidioc_g_ext_pix_fmt_vid_out) {
> + return v4l_g_fmt_ext_pix(ops, file, fh, p);
> + }
> + break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> - return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
> + if (ops->vidioc_g_fmt_vid_out_mplane)
> + return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
> + else if (ops->vidioc_g_ext_pix_fmt_vid_out)
> + return v4l_g_fmt_ext_pix(ops, file, fh, p);
> + break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
> return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
> case V4L2_BUF_TYPE_VBI_OUTPUT:
> @@ -1639,6 +1847,76 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
> return -EINVAL;
> }
>
> +static int v4l_g_ext_pix_fmt(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh, void *arg)
> +{
> + struct v4l2_ext_pix_format *ef = arg;
> + struct v4l2_format f = {
> + .type = ef->type,
> + };
> + int ret;
> +
> + ret = check_fmt(file, ef->type);
> + if (ret)
> + return ret;
> +
> + memset(ef, 0, sizeof(*ef));
> + ef->type = f.type;
> +
> + switch (f.type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + if (ops->vidioc_g_ext_pix_fmt_vid_cap)
> + return ops->vidioc_g_ext_pix_fmt_vid_cap(file, fh, ef);
> + break;
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + if (ops->vidioc_g_ext_pix_fmt_vid_out)
> + return ops->vidioc_g_ext_pix_fmt_vid_out(file, fh, ef);
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + ret = v4l_g_fmt(ops, file, fh, &f);
> + if (ret)
> + return ret;
> +
> + return v4l2_format_to_ext_pix_format(&f, ef, true);
> +}
> +
> +static int v4l_s_fmt_ext_pix(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct v4l2_ext_pix_format ef;
> + int ret;
> +
> + ret = v4l2_format_to_ext_pix_format(f, &ef, false);
> + if (ret)
> + return ret;
> +
> + switch (f->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> + ret = ops->vidioc_s_ext_pix_fmt_vid_cap(file, fh, &ef);
> + break;
> +
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> + ret = ops->vidioc_s_ext_pix_fmt_vid_out(file, fh, &ef);
> + break;
> +
> + default:
> + return -EINVAL;
> + }
> +
> + if (ret)
> + return ret;
> +
> + return v4l2_ext_pix_format_to_format(&ef, f,
> + V4L2_TYPE_IS_MULTIPLANAR(f->type),
> + true);
> +}
> +
> static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -1657,23 +1935,31 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
>
> switch (p->type) {
> case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> - if (unlikely(!ops->vidioc_s_fmt_vid_cap))
> + if (ops->vidioc_s_fmt_vid_cap) {
> + CLEAR_AFTER_FIELD(p, fmt.pix);
> + ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
> + /* just in case the driver zeroed it again */
> + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + } else if (ops->vidioc_s_ext_pix_fmt_vid_cap) {
> + ret = v4l_s_fmt_ext_pix(ops, file, fh, arg);
> + } else {
> break;
> - CLEAR_AFTER_FIELD(p, fmt.pix);
> - ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
> - /* just in case the driver zeroed it again */
> - p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + }
> +
> if (vfd->vfl_type == VFL_TYPE_TOUCH)
> v4l_pix_format_touch(&p->fmt.pix);
> return ret;
> case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> - if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
> - break;
> - CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
> - for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
> - CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
> - bytesperline);
> - return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
> + if (ops->vidioc_s_fmt_vid_cap_mplane) {
> + CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
> + for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
> + CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
> + bytesperline);
> + return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
> + } else if (ops->vidioc_s_ext_pix_fmt_vid_cap) {
> + return v4l_s_fmt_ext_pix(ops, file, fh, arg);
> + }
> + break;
> case V4L2_BUF_TYPE_VIDEO_OVERLAY:
> if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
> break;
> @@ -1690,21 +1976,27 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
> CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
> return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
> case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> - if (unlikely(!ops->vidioc_s_fmt_vid_out))
> - break;
> - CLEAR_AFTER_FIELD(p, fmt.pix);
> - ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
> - /* just in case the driver zeroed it again */
> - p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> - return ret;
> + if (ops->vidioc_s_fmt_vid_out) {
> + CLEAR_AFTER_FIELD(p, fmt.pix);
> + ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
> + /* just in case the driver zeroed it again */
> + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + return ret;
> + } else if (ops->vidioc_s_ext_pix_fmt_vid_out) {
> + return v4l_s_fmt_ext_pix(ops, file, fh, arg);
> + }
> + break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> - if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
> - break;
> - CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
> - for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
> - CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
> - bytesperline);
> - return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
> + if (ops->vidioc_s_fmt_vid_out_mplane) {
> + CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
> + for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
> + CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
> + bytesperline);
> + return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
> + } else if (ops->vidioc_s_ext_pix_fmt_vid_out) {
> + return v4l_s_fmt_ext_pix(ops, file, fh, arg);
> + }
> + break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
> if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
> break;
> @@ -1744,6 +2036,82 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
> return -EINVAL;
> }
>
> +static int v4l_s_ext_pix_fmt(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh, void *arg)
> +{
> + struct video_device *vfd = video_devdata(file);
> + struct v4l2_ext_pix_format *ef = arg;
> + struct v4l2_format f;
> + int ret;
> +
> + ret = check_fmt(file, ef->type);
> + if (ret)
> + return ret;
> +
> + switch (ef->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + if (ops->vidioc_s_ext_pix_fmt_vid_cap)
> + return ops->vidioc_s_ext_pix_fmt_vid_cap(file, fh, ef);
> + break;
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + if (ops->vidioc_s_ext_pix_fmt_vid_out)
> + return ops->vidioc_s_ext_pix_fmt_vid_out(file, fh, ef);
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + ret = v4l2_ext_pix_format_to_format(ef, &f,
> + vfd->device_caps &
> + (V4L2_CAP_VIDEO_CAPTURE_MPLANE |
> + V4L2_CAP_VIDEO_OUTPUT_MPLANE |
> + V4L2_CAP_VIDEO_M2M_MPLANE),
> + false);
> + if (ret)
> + return ret;
> +
> + ret = v4l_s_fmt(ops, file, fh, &f);
> + if (ret)
> + return ret;
> +
> + return v4l2_format_to_ext_pix_format(&f, ef, true);
> +}
> +
> +static int v4l_try_fmt_ext_pix(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct v4l2_ext_pix_format ef;
> + int ret;
> +
> + ret = v4l2_format_to_ext_pix_format(f, &ef, false);
> + if (ret)
> + return ret;
> +
> + switch (f->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> + ret = ops->vidioc_try_ext_pix_fmt_vid_cap(file, fh, &ef);
> + break;
> +
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> + ret = ops->vidioc_try_ext_pix_fmt_vid_out(file, fh, &ef);
> + break;
> +
> + default:
> + return -EINVAL;
> + }
> +
> + if (ret)
> + return ret;
> +
> + return v4l2_ext_pix_format_to_format(&ef, f,
> + V4L2_TYPE_IS_MULTIPLANAR(f->type),
> + true);
> +}
> +
> +
> static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -1759,23 +2127,32 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
>
> switch (p->type) {
> case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> - if (unlikely(!ops->vidioc_try_fmt_vid_cap))
> - break;
> - CLEAR_AFTER_FIELD(p, fmt.pix);
> - ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
> - /* just in case the driver zeroed it again */
> - p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> - if (vfd->vfl_type == VFL_TYPE_TOUCH)
> - v4l_pix_format_touch(&p->fmt.pix);
> - return ret;
> + if (ops->vidioc_try_fmt_vid_cap) {
> + CLEAR_AFTER_FIELD(p, fmt.pix);
> + ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
> + /* just in case the driver zeroed it again */
> + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + if (vfd->vfl_type == VFL_TYPE_TOUCH)
> + v4l_pix_format_touch(&p->fmt.pix);
> + return ret;
> + } else if (ops->vidioc_try_ext_pix_fmt_vid_cap) {
> + ret = v4l_try_fmt_ext_pix(ops, file, fh, p);
> + if (vfd->vfl_type == VFL_TYPE_TOUCH)
> + v4l_pix_format_touch(&p->fmt.pix);
> + return ret;
> + }
> + break;
> case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> - if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
> - break;
> - CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
> - for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
> - CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
> - bytesperline);
> - return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
> + if (ops->vidioc_try_fmt_vid_cap_mplane) {
> + CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
> + for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
> + CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
> + bytesperline);
> + return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
> + } else if (ops->vidioc_try_ext_pix_fmt_vid_cap) {
> + return v4l_try_fmt_ext_pix(ops, file, fh, p);
> + }
> + break;
> case V4L2_BUF_TYPE_VIDEO_OVERLAY:
> if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
> break;
> @@ -1792,21 +2169,27 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
> CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
> return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
> case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> - if (unlikely(!ops->vidioc_try_fmt_vid_out))
> - break;
> - CLEAR_AFTER_FIELD(p, fmt.pix);
> - ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
> - /* just in case the driver zeroed it again */
> - p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> - return ret;
> + if (ops->vidioc_try_fmt_vid_out) {
> + CLEAR_AFTER_FIELD(p, fmt.pix);
> + ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
> + /* just in case the driver zeroed it again */
> + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + return ret;
> + } else if (ops->vidioc_try_ext_pix_fmt_vid_cap) {
> + return v4l_try_fmt_ext_pix(ops, file, fh, p);
> + }
> + break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> - if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
> - break;
> - CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
> - for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
> - CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
> - bytesperline);
> - return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
> + if (ops->vidioc_try_fmt_vid_out_mplane) {
> + CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
> + for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
> + CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
> + bytesperline);
> + return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
> + } else if (ops->vidioc_try_ext_pix_fmt_vid_cap) {
> + return v4l_try_fmt_ext_pix(ops, file, fh, p);
> + }
> + break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
> if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
> break;
> @@ -1846,6 +2229,49 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
> return -EINVAL;
> }
>
> +static int v4l_try_ext_pix_fmt(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh, void *arg)
> +{
> + struct video_device *vfd = video_devdata(file);
> + struct v4l2_ext_pix_format *ef = arg;
> + struct v4l2_format f;
> + int ret;
> +
> + ret = check_fmt(file, ef->type);
> + if (ret)
> + return ret;
> +
> + switch (ef->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + if (ops->vidioc_try_ext_pix_fmt_vid_cap)
> + return ops->vidioc_try_ext_pix_fmt_vid_cap(file, fh,
> + ef);
> + break;
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + if (ops->vidioc_try_ext_pix_fmt_vid_out)
> + return ops->vidioc_try_ext_pix_fmt_vid_out(file, fh,
> + ef);
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + ret = v4l2_ext_pix_format_to_format(ef, &f,
> + vfd->device_caps &
> + (V4L2_CAP_VIDEO_CAPTURE_MPLANE |
> + V4L2_CAP_VIDEO_OUTPUT_MPLANE |
> + V4L2_CAP_VIDEO_M2M_MPLANE),
> + false);
> + if (ret)
> + return ret;
> +
> + ret = v4l_try_fmt(ops, file, fh, &f);
> + if (ret)
> + return ret;
> +
> + return v4l2_format_to_ext_pix_format(&f, ef, true);
> +}
> +
> static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -2765,7 +3191,9 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
> IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0),
> IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
> + IOCTL_INFO(VIDIOC_G_EXT_PIX_FMT, v4l_g_ext_pix_fmt, v4l_print_ext_pix_format, 0),
> IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
> + IOCTL_INFO(VIDIOC_S_EXT_PIX_FMT, v4l_s_ext_pix_fmt, v4l_print_ext_pix_format, INFO_FL_PRIO),
> IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
> IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
> IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),
> @@ -2812,6 +3240,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
> IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
> IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
> + IOCTL_INFO(VIDIOC_TRY_EXT_PIX_FMT, v4l_try_ext_pix_fmt, v4l_print_ext_pix_format, 0),
> IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
> IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
> IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> index 86878fba332b0..525ce86725260 100644
> --- a/include/media/v4l2-ioctl.h
> +++ b/include/media/v4l2-ioctl.h
> @@ -48,11 +48,17 @@ struct v4l2_fh;
> * @vidioc_g_fmt_vid_cap: pointer to the function that implements
> * :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video capture
> * in single plane mode
> + * @vidioc_g_ext_pix_fmt_vid_cap: pointer to the function that implements
> + * :ref:`VIDIOC_G_EXT_PIX_FMT <vidioc_g_ext_pix_fmt>` ioctl logic for video
> + * capture
> * @vidioc_g_fmt_vid_overlay: pointer to the function that implements
> * :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay
> * @vidioc_g_fmt_vid_out: pointer to the function that implements
> * :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video out
> * in single plane mode
> + * @vidioc_g_ext_pix_fmt_vid_out: pointer to the function that implements
> + * :ref:`VIDIOC_G_EXT_PIX_FMT <vidioc_g_ext_pix_fmt>` ioctl logic for video
> + * out
> * @vidioc_g_fmt_vid_out_overlay: pointer to the function that implements
> * :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
> * @vidioc_g_fmt_vbi_cap: pointer to the function that implements
> @@ -82,11 +88,16 @@ struct v4l2_fh;
> * @vidioc_s_fmt_vid_cap: pointer to the function that implements
> * :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video capture
> * in single plane mode
> + * @vidioc_s_ext_pix_fmt_vid_cap: pointer to the function that implements
> + * :ref:`VIDIOC_S_EXT_PIX_FMT <vidioc_s_ext_pix_fmt>` ioctl logic for video
> + * capture
> * @vidioc_s_fmt_vid_overlay: pointer to the function that implements
> * :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay
> * @vidioc_s_fmt_vid_out: pointer to the function that implements
> * :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video out
> * in single plane mode
> + * @vidioc_s_ext_pix_fmt_vid_out: pointer to the function that implements
> + * :ref:`VIDIOC_S_EXT_PIX_FMT <vidioc_g_fmt>` ioctl logic for video out
> * @vidioc_s_fmt_vid_out_overlay: pointer to the function that implements
> * :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
> * @vidioc_s_fmt_vbi_cap: pointer to the function that implements
> @@ -116,11 +127,16 @@ struct v4l2_fh;
> * @vidioc_try_fmt_vid_cap: pointer to the function that implements
> * :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video capture
> * in single plane mode
> + * @vidioc_try_ext_pix_fmt_vid_cap: pointer to the function that implements
> + * :ref:`VIDIOC_TRY_EXT_PIX_FMT <vidioc_try_ext_pix_fmt>` ioctl logic for
> + video capture
> * @vidioc_try_fmt_vid_overlay: pointer to the function that implements
> * :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
> * @vidioc_try_fmt_vid_out: pointer to the function that implements
> * :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video out
> * in single plane mode
> + * @vidioc_try_ext_pix_fmt_vid_out: pointer to the function that implements
> + * :ref:`VIDIOC_TRY_EXT_PIX_FMT <vidioc_g_fmt>` ioctl logic for video out
> * @vidioc_try_fmt_vid_out_overlay: pointer to the function that implements
> * :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
> * output
> @@ -319,10 +335,14 @@ struct v4l2_ioctl_ops {
> /* VIDIOC_G_FMT handlers */
> int (*vidioc_g_fmt_vid_cap)(struct file *file, void *fh,
> struct v4l2_format *f);
> + int (*vidioc_g_ext_pix_fmt_vid_cap)(struct file *file, void *fh,
> + struct v4l2_ext_pix_format *f);
> int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
> struct v4l2_format *f);
> int (*vidioc_g_fmt_vid_out)(struct file *file, void *fh,
> struct v4l2_format *f);
> + int (*vidioc_g_ext_pix_fmt_vid_out)(struct file *file, void *fh,
> + struct v4l2_ext_pix_format *f);
> int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
> struct v4l2_format *f);
> int (*vidioc_g_fmt_vbi_cap)(struct file *file, void *fh,
> @@ -349,10 +369,14 @@ struct v4l2_ioctl_ops {
> /* VIDIOC_S_FMT handlers */
> int (*vidioc_s_fmt_vid_cap)(struct file *file, void *fh,
> struct v4l2_format *f);
> + int (*vidioc_s_ext_pix_fmt_vid_cap)(struct file *file, void *fh,
> + struct v4l2_ext_pix_format *f);
> int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
> struct v4l2_format *f);
> int (*vidioc_s_fmt_vid_out)(struct file *file, void *fh,
> struct v4l2_format *f);
> + int (*vidioc_s_ext_pix_fmt_vid_out)(struct file *file, void *fh,
> + struct v4l2_ext_pix_format *f);
> int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
> struct v4l2_format *f);
> int (*vidioc_s_fmt_vbi_cap)(struct file *file, void *fh,
> @@ -379,10 +403,14 @@ struct v4l2_ioctl_ops {
> /* VIDIOC_TRY_FMT handlers */
> int (*vidioc_try_fmt_vid_cap)(struct file *file, void *fh,
> struct v4l2_format *f);
> + int (*vidioc_try_ext_pix_fmt_vid_cap)(struct file *file, void *fh,
> + struct v4l2_ext_pix_format *f);
> int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
> struct v4l2_format *f);
> int (*vidioc_try_fmt_vid_out)(struct file *file, void *fh,
> struct v4l2_format *f);
> + int (*vidioc_try_ext_pix_fmt_vid_out)(struct file *file, void *fh,
> + struct v4l2_ext_pix_format *f);
> int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
> struct v4l2_format *f);
> int (*vidioc_try_fmt_vbi_cap)(struct file *file, void *fh,
> @@ -724,6 +752,12 @@ long int video_usercopy(struct file *file, unsigned int cmd,
> long int video_ioctl2(struct file *file,
> unsigned int cmd, unsigned long int arg);
>
> +int v4l2_format_to_ext_pix_format(const struct v4l2_format *f,
> + struct v4l2_ext_pix_format *e, bool strict);
> +int v4l2_ext_pix_format_to_format(const struct v4l2_ext_pix_format *e,
> + struct v4l2_format *f,
> + bool mplane_cap, bool strict);
> +
> /*
> * The user space interpretation of the 'v4l2_event' differs
> * based on the 'time_t' definition on 32-bit architectures, so
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 303805438814f..fc04c81ce7713 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -2252,6 +2252,57 @@ struct v4l2_pix_format_mplane {
> __u8 reserved[7];
> } __attribute__ ((packed));
>
> +/**
> + * struct v4l2_plane_ext_pix_format - additional, per-plane format definition
> + * @sizeimage: maximum size in bytes required for data, for which
> + * this plane will be used
> + * @bytesperline: distance in bytes between the leftmost pixels in two
> + * adjacent lines
> + * @reserved: extra space reserved for future fields, must be set to 0
> + */
> +struct v4l2_plane_ext_pix_format {
> + __u32 sizeimage;
> + __u32 bytesperline;
> + __u32 reserved;
> +} __attribute__ ((packed));
> +
> +/**
> + * struct v4l2_ext_pix_format - extended single/multiplanar format definition
> + * @type: type of the data stream; V4L2_BUF_TYPE_VIDEO_CAPTURE or
> + * V4L2_BUF_TYPE_VIDEO_OUTPUT
> + * @width: image width in pixels
> + * @height: image height in pixels
> + * @field: enum v4l2_field; field order (for interlaced video)
> + * @pixelformat: little endian four character code (fourcc)
> + * @modifier: modifier applied to the format (used for tiled formats
> + * and other kind of HW-specific formats, like compressed
> + * formats)
> + * @colorspace: enum v4l2_colorspace; supplemental to pixelformat
> + * @plane_fmt: per-plane information
> + * @ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding
> + * @hsv_enc: enum v4l2_hsv_encoding, HSV encoding
> + * @quantization: enum v4l2_quantization, colorspace quantization
> + * @xfer_func: enum v4l2_xfer_func, colorspace transfer function
> + * @reserved: extra space reserved for future fields, must be set to 0
> + */
> +struct v4l2_ext_pix_format {
> + __u32 type;
> + __u32 width;
> + __u32 height;
> + __u32 field;
> + __u32 pixelformat;
> + __u64 modifier;
> + __u32 colorspace;
This struct has holes and is not the same for 32 and 64 bit architectures.
Moving modifier to before pixelformat will help a lot.
> + struct v4l2_plane_ext_pix_format plane_fmt[VIDEO_MAX_PLANES];
> + union {
> + __u8 ycbcr_enc;
> + __u8 hsv_enc;
> + };
> + __u8 quantization;
> + __u8 xfer_func;
I'd change u8 to u32 for these fields for easier alignment.
Regards,
Hans
> + __u32 reserved[4];
> +} __attribute__ ((packed));
> +
> /**
> * struct v4l2_sdr_format - SDR format definition
> * @pixelformat: little endian four character code (fourcc)
> @@ -2569,6 +2620,10 @@ struct v4l2_create_buffers {
>
> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
>
> +#define VIDIOC_G_EXT_PIX_FMT _IOWR('V', 104, struct v4l2_ext_pix_format)
> +#define VIDIOC_S_EXT_PIX_FMT _IOWR('V', 105, struct v4l2_ext_pix_format)
> +#define VIDIOC_TRY_EXT_PIX_FMT _IOWR('V', 106, struct v4l2_ext_pix_format)
> +
> /* Reminder: when adding new ioctls please add support for them to
> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
>
>
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