On 4/4/19 10:16 AM, Boris Brezillon wrote:
> 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 V4L2_BUF_TYPE_VIDEO[_OUTPUT]_OVERLAY and
> V4L2_BUF_TYPE_VIDEO_{CAPTURE,OUTPUT}_MPLANE types are no longer accepted
> in v4l2_ext_format and will be rejected if you use the {G,S,TRY}EXT_FMT
> ioctls. V4L2_BUF_TYPE_VIDEO_{CAPTURE,OUTPUT}_MPLANE is dropped as part
> of the multiplanar/singleplanar unification.
> V4L2_BUF_TYPE_VIDEO[_OUTPUT]_OVERLAY seems to be used mostly on old
> drivers and supporting it would require some extra rework.
>
> 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 <[email protected]>
> ---
> 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 | 24 +-
> drivers/media/v4l2-core/v4l2-ioctl.c | 692 ++++++++++++++++++++++++---
> include/media/v4l2-ioctl.h | 33 ++
> include/uapi/linux/videodev2.h | 81 ++++
> 4 files changed, 749 insertions(+), 81 deletions(-)
>
> diff --git a/drivers/media/v4l2-core/v4l2-dev.c
> b/drivers/media/v4l2-core/v4l2-dev.c
> index 29946a2b2752..a233e0924ed3 100644
> --- a/drivers/media/v4l2-core/v4l2-dev.c
> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> @@ -599,32 +599,44 @@ static void determine_valid_ioctls(struct video_device
> *vdev)
> ops->vidioc_enum_fmt_meta_out)))
> set_bit(_IOC_NR(VIDIOC_ENUM_FMT), valid_ioctls);
> if ((is_rx && (ops->vidioc_g_fmt_vid_cap ||
> + ops->vidioc_g_ext_fmt_vid_cap ||
> ops->vidioc_g_fmt_vid_cap_mplane ||
> ops->vidioc_g_fmt_vid_overlay ||
> ops->vidioc_g_fmt_meta_cap)) ||
> (is_tx && (ops->vidioc_g_fmt_vid_out ||
> + ops->vidioc_g_ext_fmt_vid_out ||
> ops->vidioc_g_fmt_vid_out_mplane ||
> ops->vidioc_g_fmt_vid_out_overlay ||
> - ops->vidioc_g_fmt_meta_out)))
> - set_bit(_IOC_NR(VIDIOC_G_FMT), valid_ioctls);
> + ops->vidioc_g_fmt_meta_out))) {
> + set_bit(_IOC_NR(VIDIOC_G_FMT), valid_ioctls);
> + set_bit(_IOC_NR(VIDIOC_G_EXT_FMT), valid_ioctls);
> + }
> if ((is_rx && (ops->vidioc_s_fmt_vid_cap ||
> + ops->vidioc_s_ext_fmt_vid_cap ||
> ops->vidioc_s_fmt_vid_cap_mplane ||
> ops->vidioc_s_fmt_vid_overlay ||
> ops->vidioc_s_fmt_meta_cap)) ||
> (is_tx && (ops->vidioc_s_fmt_vid_out ||
> + ops->vidioc_s_ext_fmt_vid_out ||
> ops->vidioc_s_fmt_vid_out_mplane ||
> ops->vidioc_s_fmt_vid_out_overlay ||
> - ops->vidioc_s_fmt_meta_out)))
> - set_bit(_IOC_NR(VIDIOC_S_FMT), valid_ioctls);
> + ops->vidioc_s_fmt_meta_out))) {
> + set_bit(_IOC_NR(VIDIOC_S_FMT), valid_ioctls);
> + set_bit(_IOC_NR(VIDIOC_S_EXT_FMT), valid_ioctls);
> + }
> if ((is_rx && (ops->vidioc_try_fmt_vid_cap ||
> + ops->vidioc_try_ext_fmt_vid_cap ||
> ops->vidioc_try_fmt_vid_cap_mplane ||
> ops->vidioc_try_fmt_vid_overlay ||
> ops->vidioc_try_fmt_meta_cap)) ||
> (is_tx && (ops->vidioc_try_fmt_vid_out ||
> + ops->vidioc_try_ext_fmt_vid_out ||
> ops->vidioc_try_fmt_vid_out_mplane ||
> ops->vidioc_try_fmt_vid_out_overlay ||
> - ops->vidioc_try_fmt_meta_out)))
> - set_bit(_IOC_NR(VIDIOC_TRY_FMT), valid_ioctls);
> + ops->vidioc_try_fmt_meta_out))) {
> + set_bit(_IOC_NR(VIDIOC_TRY_FMT), valid_ioctls);
> + set_bit(_IOC_NR(VIDIOC_TRY_EXT_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);
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c
> b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 97ba365218fb..f9001efa0aa5 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -381,6 +381,82 @@ static void v4l_print_format(const void *arg, bool
> write_only)
> }
> }
>
> +static void v4l_print_ext_format(const void *arg, bool write_only)
> +{
> + const struct v4l2_ext_format *p = arg;
> + const struct v4l2_ext_pix_format *pix;
> + const struct v4l2_vbi_format *vbi;
> + const struct v4l2_sliced_vbi_format *sliced;
> + const struct v4l2_sdr_format *sdr;
> + const struct v4l2_meta_format *meta;
> + unsigned int i;
> + u32 planes;
> +
> + pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
> + switch (p->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + pix = &p->fmt.pix;
> + pr_cont(", width=%u, height=%u, format=%c%c%c%c, modifier %llx,
> field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u,
> quantization=%u, xfer_func=%u\n",
> + 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->num_planes, pix->flags,
> + pix->ycbcr_enc, pix->quantization, pix->xfer_func);
> + planes = min_t(u32, pix->num_planes, VIDEO_MAX_PLANES);
> + for (i = 0; i < planes; i++)
> + pr_debug("plane %u: bytesperline=%u sizeimage=%u\n",
> + i, pix->plane_fmt[i].bytesperline,
> + pix->plane_fmt[i].sizeimage);
> + break;
> + case V4L2_BUF_TYPE_VBI_CAPTURE:
> + case V4L2_BUF_TYPE_VBI_OUTPUT:
> + vbi = &p->fmt.vbi;
> + pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u,
> sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
> + vbi->sampling_rate, vbi->offset,
> + vbi->samples_per_line,
> + (vbi->sample_format & 0xff),
> + (vbi->sample_format >> 8) & 0xff,
> + (vbi->sample_format >> 16) & 0xff,
> + (vbi->sample_format >> 24) & 0xff,
> + vbi->start[0], vbi->start[1],
> + vbi->count[0], vbi->count[1]);
> + break;
> + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
> + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
> + sliced = &p->fmt.sliced;
> + pr_cont(", service_set=0x%08x, io_size=%d\n",
> + sliced->service_set, sliced->io_size);
> + for (i = 0; i < 24; i++)
> + pr_debug("line[%02u]=0x%04x, 0x%04x\n", i,
> + sliced->service_lines[0][i],
> + sliced->service_lines[1][i]);
> + break;
> + case V4L2_BUF_TYPE_SDR_CAPTURE:
> + case V4L2_BUF_TYPE_SDR_OUTPUT:
> + sdr = &p->fmt.sdr;
> + pr_cont(", pixelformat=%c%c%c%c\n",
> + (sdr->pixelformat >> 0) & 0xff,
> + (sdr->pixelformat >> 8) & 0xff,
> + (sdr->pixelformat >> 16) & 0xff,
> + (sdr->pixelformat >> 24) & 0xff);
> + break;
> + case V4L2_BUF_TYPE_META_CAPTURE:
> + case V4L2_BUF_TYPE_META_OUTPUT:
> + 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;
> + }
> +}
> +
> static void v4l_print_framebuffer(const void *arg, bool write_only)
> {
> const struct v4l2_framebuffer *p = arg;
> @@ -951,11 +1027,15 @@ 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_fmt_vid_cap ||
> + ops->vidioc_g_fmt_vid_cap_mplane))
> return 0;
> break;
> case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> - if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
> + if (is_vid && is_rx &&
> + (ops->vidioc_g_fmt_vid_cap_mplane ||
> + ops->vidioc_g_ext_fmt_vid_cap))
Is this right? I thought that V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE was to be
refused
when used with the new ioctls? Perhaps check_fmt needs an extra argument that
tells it whether it is called from the new ioctls or not.
> return 0;
> break;
> case V4L2_BUF_TYPE_VIDEO_OVERLAY:
> @@ -964,11 +1044,15 @@ 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_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_fmt_vid_out ||
> + ops->vidioc_g_fmt_vid_out_mplane))
> return 0;
> break;
> case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
> @@ -1048,6 +1132,197 @@ static void v4l_sanitize_format(struct v4l2_format
> *fmt)
> sizeof(fmt->fmt.pix) - offset);
> }
>
> +int v4l2_ext_format_to_format(const struct v4l2_ext_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));
> +
> + switch (e->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + /*
> + * Make sure no modifier is required before doing the
> + * conversion.
> + */
> + if (e->fmt.pix.modifier && strict)
> + return -EINVAL;
> +
> + if ((e->fmt.pix.num_planes > VIDEO_MAX_PLANES ||
> + !e->fmt.pix.num_planes) && strict)
> + return -EINVAL;
> +
> + if (e->fmt.pix.num_planes > 1 && !mplane_cap && strict)
> + return -EINVAL;
> +
> + if (!mplane_cap) {
> + f->fmt.pix.width = e->fmt.pix.width;
> + f->fmt.pix.height = e->fmt.pix.height;
> + f->fmt.pix.pixelformat = e->fmt.pix.pixelformat;
> + f->fmt.pix.field = e->fmt.pix.field;
> + f->fmt.pix.colorspace = e->fmt.pix.colorspace;
> + f->fmt.pix.flags = e->fmt.pix.flags;
> + f->fmt.pix.ycbcr_enc = e->fmt.pix.ycbcr_enc;
> + f->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
> + f->fmt.pix.quantization = e->fmt.pix.quantization;
> + pe = &e->fmt.pix.plane_fmt[0];
> + f->fmt.pix.bytesperline = pe->bytesperline;
> + f->fmt.pix.sizeimage = pe->sizeimage;
> + f->type = e->type;
> + break;
> + }
> +
> + f->fmt.pix_mp.width = e->fmt.pix.width;
> + f->fmt.pix_mp.height = e->fmt.pix.height;
> + f->fmt.pix_mp.pixelformat = e->fmt.pix.pixelformat;
> + f->fmt.pix_mp.field = e->fmt.pix.field;
> + f->fmt.pix_mp.colorspace = e->fmt.pix.colorspace;
> + f->fmt.pix_mp.flags = e->fmt.pix.flags;
> + f->fmt.pix_mp.ycbcr_enc = e->fmt.pix.ycbcr_enc;
> + f->fmt.pix_mp.quantization = e->fmt.pix.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->fmt.pix.plane_fmt[i];
> + p = &f->fmt.pix_mp.plane_fmt[i];
> + p->bytesperline = pe->bytesperline;
> + p->sizeimage = pe->sizeimage;
> + }
> + break;
> +
> + case V4L2_BUF_TYPE_VBI_CAPTURE:
> + case V4L2_BUF_TYPE_VBI_OUTPUT:
> + f->type = e->type;
> + f->fmt.vbi = e->fmt.vbi;
> + break;
> +
> + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
> + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
> + f->type = e->type;
> + f->fmt.sliced = e->fmt.sliced;
> + break;
> +
> + case V4L2_BUF_TYPE_SDR_CAPTURE:
> + case V4L2_BUF_TYPE_SDR_OUTPUT:
> + f->type = e->type;
> + f->fmt.sdr = e->fmt.sdr;
> + break;
> +
> + case V4L2_BUF_TYPE_META_CAPTURE:
> + case V4L2_BUF_TYPE_META_OUTPUT:
> + f->type = e->type;
> + f->fmt.meta = e->fmt.meta;
> + break;
> +
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(v4l2_ext_format_to_format);
> +
> +int v4l2_format_to_ext_format(const struct v4l2_format *f,
> + struct v4l2_ext_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->fmt.pix.width = f->fmt.pix.width;
> + e->fmt.pix.height = f->fmt.pix.height;
> + e->fmt.pix.pixelformat = f->fmt.pix.pixelformat;
> + e->fmt.pix.field = f->fmt.pix.field;
> + e->fmt.pix.colorspace = f->fmt.pix.colorspace;
> + e->fmt.pix.flags = f->fmt.pix.flags;
> + e->fmt.pix.ycbcr_enc = f->fmt.pix.ycbcr_enc;
> + e->fmt.pix.quantization = f->fmt.pix.quantization;
> + e->fmt.pix.num_planes = 1;
> + e->fmt.pix.plane_fmt[0].bytesperline = f->fmt.pix.bytesperline;
> + e->fmt.pix.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->fmt.pix.width = f->fmt.pix_mp.width;
> + e->fmt.pix.height = f->fmt.pix_mp.height;
> + e->fmt.pix.pixelformat = f->fmt.pix_mp.pixelformat;
> + e->fmt.pix.field = f->fmt.pix_mp.field;
> + e->fmt.pix.colorspace = f->fmt.pix_mp.colorspace;
> + e->fmt.pix.flags = f->fmt.pix_mp.flags;
> + e->fmt.pix.ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
> + e->fmt.pix.quantization = f->fmt.pix_mp.quantization;
> + e->fmt.pix.num_planes = f->fmt.pix_mp.num_planes;
> + 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->fmt.pix.plane_fmt[i];
> + p = &f->fmt.pix_mp.plane_fmt[i];
> + pe->bytesperline = p->bytesperline;
> + pe->sizeimage = p->sizeimage;
> + }
> + break;
> +
> + case V4L2_BUF_TYPE_VIDEO_OVERLAY:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
> + /*
> + * OVERLAY formats are not supported by the _EXT_FMT
> + * ioctl()s.
> + */
> + return -EINVAL;
> +
> + case V4L2_BUF_TYPE_VBI_CAPTURE:
> + case V4L2_BUF_TYPE_VBI_OUTPUT:
> + e->type = f->type;
> + e->fmt.vbi = f->fmt.vbi;
> + break;
> +
> + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
> + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
> + e->type = f->type;
> + e->fmt.sliced = f->fmt.sliced;
> + break;
> +
> + case V4L2_BUF_TYPE_SDR_CAPTURE:
> + case V4L2_BUF_TYPE_SDR_OUTPUT:
> + e->type = f->type;
> + e->fmt.sdr = f->fmt.sdr;
> + break;
> +
> + case V4L2_BUF_TYPE_META_CAPTURE:
> + case V4L2_BUF_TYPE_META_OUTPUT:
> + e->type = f->type;
> + e->fmt.meta = f->fmt.meta;
> + break;
> +
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(v4l2_format_to_ext_format);
> +
> static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -1440,6 +1715,38 @@ static int v4l_enum_fmt(const struct v4l2_ioctl_ops
> *ops,
> return ret;
> }
>
> +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_format ef = {
> + .type = f->type,
> + };
> + int ret;
> +
> + switch (f->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
> + ret = ops->vidioc_g_ext_fmt_vid_cap(file, fh, &ef.fmt.pix);
This will call vidioc_g_ext_fmt_vid_cap with type _MPLANE, which we said we
wouldn't support for the extended ioctls.
> + break;
> +
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> + ret = ops->vidioc_g_ext_fmt_vid_out(file, fh, &ef.fmt.pix);
> + break;
> +
> + default:
> + return -EINVAL;
> + }
> +
> + if (ret)
> + return ret;
> +
> + return v4l2_ext_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)
> {
> @@ -1475,15 +1782,22 @@ 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;
> - 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;
> + return ret;
> + } else if (ops->vidioc_g_ext_fmt_vid_cap) {
> + return v4l_g_fmt_ext_pix(ops, file, fh, p);
Test for the extended op first. Same elsewhere below. E.g.:
if (ops->vidioc_g_ext_fmt_vid_cap)
return v4l_g_fmt_ext_pix(ops, file, fh, p);
if (unlikely(!ops->vidioc_g_fmt_vid_cap))
break;
p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
...
> + }
> + 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_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:
> @@ -1491,15 +1805,22 @@ 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_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_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:
> @@ -1518,6 +1839,43 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
> return -EINVAL;
> }
>
> +static int v4l_g_ext_fmt(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh, void *arg)
> +{
> + struct v4l2_ext_format *ef = arg;
> + struct v4l2_format f = {
> + .type = ef->type,
> + };
> + int ret;
> +
> + ret = check_fmt(file, ef->type);
> + if (ret)
> + return ret;
> +
> + memset(&ef->fmt, 0, sizeof(ef->fmt));
> +
> + switch (ef->type) {
> + case V4L2_BUF_TYPE_VIDEO_CAPTURE:
> + if (ops->vidioc_g_ext_fmt_vid_cap)
> + return ops->vidioc_g_ext_fmt_vid_cap(file, fh,
> + &ef->fmt.pix);
> + break;
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + if (ops->vidioc_g_ext_fmt_vid_out)
> + return ops->vidioc_g_ext_fmt_vid_out(file, fh,
> + &ef->fmt.pix);
> + break;
> + default:
> + break;
> + }
> +
> + ret = v4l_g_fmt(ops, file, fh, &f);
> + if (ret)
> + return ret;
> +
> + return v4l2_format_to_ext_format(&f, ef, true);
> +}
> +
> static void v4l_pix_format_touch(struct v4l2_pix_format *p)
> {
> /*
> @@ -1533,6 +1891,40 @@ static void v4l_pix_format_touch(struct
> v4l2_pix_format *p)
> p->xfer_func = 0;
> }
>
> +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_format ef;
> + int ret;
> +
> + ret = v4l2_format_to_ext_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_fmt_vid_cap(file, fh, &ef.fmt.pix);
> + break;
> +
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> + ret = ops->vidioc_s_ext_fmt_vid_out(file, fh, &ef.fmt.pix);
> + break;
> +
> + default:
> + return -EINVAL;
> + }
> +
> + if (ret)
> + return ret;
> +
> + return v4l2_ext_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)
> {
> @@ -1551,23 +1943,31 @@ 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))
> - 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 (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_fmt_vid_cap) {
> + ret = v4l_s_fmt_ext_pix(ops, file, fh, arg);
The helper functions v4l_[g/s/try]_fmt_ext_pix are confusingly named.
How about: v4l_[g/s/try]_fmt_using_ext_fmt.
> + } else {
> + ret = -EINVAL;
> + }
> +
> 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_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;
> @@ -1584,21 +1984,27 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
> CLEAR_AFTER_FIELD(p, fmt.sliced);
> 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_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_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;
> @@ -1638,6 +2044,84 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
> return -EINVAL;
> }
>
> +static int v4l_s_ext_fmt(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh, void *arg)
> +{
> + struct video_device *vfd = video_devdata(file);
> + struct v4l2_ext_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_fmt_vid_cap)
> + return ops->vidioc_s_ext_fmt_vid_cap(file, fh,
> + &ef->fmt.pix);
> + break;
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + if (ops->vidioc_s_ext_fmt_vid_out)
> + return ops->vidioc_s_ext_fmt_vid_out(file, fh,
> + &ef->fmt.pix);
> + break;
> + default:
> + break;
> + }
> +
> + ret = v4l2_ext_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_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_format ef;
> + int ret;
> +
> + ret = v4l2_format_to_ext_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_fmt_vid_cap(file, fh, &ef.fmt.pix);
> + break;
> +
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
> + ret = ops->vidioc_try_ext_fmt_vid_out(file, fh, &ef.fmt.pix);
> + break;
> +
> + default:
> + return -EINVAL;
> + }
> +
> + if (ret)
> + return ret;
> +
> + return v4l2_ext_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)
> {
> @@ -1652,21 +2136,27 @@ 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;
> - 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;
> + return ret;
> + } else if (ops->vidioc_try_ext_fmt_vid_cap) {
> + return v4l_try_fmt_ext_pix(ops, file, fh, p);
> + }
> + 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_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;
> @@ -1683,21 +2173,27 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops
> *ops,
> CLEAR_AFTER_FIELD(p, fmt.sliced);
> 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_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_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;
> @@ -1737,6 +2233,49 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops
> *ops,
> return -EINVAL;
> }
>
> +static int v4l_try_ext_fmt(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh, void *arg)
> +{
> + struct video_device *vfd = video_devdata(file);
> + struct v4l2_ext_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_fmt_vid_cap)
> + return ops->vidioc_try_ext_fmt_vid_cap(file, fh,
> + &ef->fmt.pix);
> + break;
> + case V4L2_BUF_TYPE_VIDEO_OUTPUT:
> + if (ops->vidioc_try_ext_fmt_vid_out)
> + return ops->vidioc_try_ext_fmt_vid_out(file, fh,
> + &ef->fmt.pix);
> + break;
> + default:
> + break;
> + }
> +
> + ret = v4l2_ext_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_format(&f, ef, true);
> +}
> +
> static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -2655,7 +3194,9 @@ 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,
> INFO_FL_CLEAR(v4l2_fmtdesc, type)),
> IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
> + IOCTL_INFO(VIDIOC_G_EXT_FMT, v4l_g_ext_fmt, v4l_print_ext_format, 0),
> IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
> + IOCTL_INFO(VIDIOC_S_EXT_FMT, v4l_s_ext_fmt, v4l_print_ext_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),
> @@ -2702,6 +3243,7 @@ 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_FMT, v4l_try_ext_fmt, v4l_print_ext_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 400f2e46c108..a1fb5eac144b 100644
> --- a/include/media/v4l2-ioctl.h
> +++ b/include/media/v4l2-ioctl.h
> @@ -48,11 +48,16 @@ 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_fmt_vid_cap: pointer to the function that implements
> + * :ref:`VIDIOC_G_EXT_FMT <vidioc_g_ext_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_fmt_vid_out: pointer to the function that implements
> + * :ref:`VIDIOC_G_EXT_FMT <vidioc_g_ext_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 +87,16 @@ 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_fmt_vid_cap: pointer to the function that implements
> + * :ref:`VIDIOC_S_EXT_FMT <vidioc_s_ext_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_fmt_vid_out: pointer to the function that implements
> + * :ref:`VIDIOC_S_EXT_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 +126,16 @@ 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_fmt_vid_cap: pointer to the function that implements
> + * :ref:`VIDIOC_TRY_EXT_FMT <vidioc_try_ext_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_fmt_vid_out: pointer to the function that implements
> + * :ref:`VIDIOC_TRY_EXT_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 +334,14 @@ 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_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_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 +368,14 @@ 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_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_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 +402,14 @@ 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_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_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,
> @@ -722,4 +749,10 @@ 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_format(const struct v4l2_format *f,
> + struct v4l2_ext_format *e, bool strict);
> +int v4l2_ext_format_to_format(const struct v4l2_ext_format *e,
> + struct v4l2_format *f,
> + bool mplane_cap, bool strict);
> +
> #endif /* _V4L2_IOCTL_H */
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 1db220da3bcc..b32c4a10c46f 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -2171,6 +2171,55 @@ 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
> + */
> +struct v4l2_plane_ext_pix_format {
> + __u32 sizeimage;
> + __u32 bytesperline;
> +};
> +
> +/**
> + * struct v4l2_ext_pix_format - extended single/multiplanar format definition
> + * @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
> + * @num_planes: number of planes for this format. Should be equal to 1
> + * for single-planar formats and greater than 1 for
> + * multiplanar ones
> + * @plane_fmt: per-plane information
> + * @flags: format flags (V4L2_PIX_FMT_FLAG_*)
> + * @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
> + */
> +struct v4l2_ext_pix_format {
> + __u32 width;
> + __u32 height;
> + __u32 field;
> + __u32 pixelformat;
> + __u64 modifier;
> + __u32 colorspace;
> + __u32 num_planes;
> + struct v4l2_plane_ext_pix_format plane_fmt[VIDEO_MAX_PLANES];
> + __u8 flags;
> + union {
> + __u8 ycbcr_enc;
> + __u8 hsv_enc;
> + };
> + __u8 quantization;
> + __u8 xfer_func;
> +};
> +
> /**
> * struct v4l2_sdr_format - SDR format definition
> * @pixelformat: little endian four character code (fourcc)
> @@ -2216,6 +2265,35 @@ struct v4l2_format {
> } fmt;
> };
>
> +/**
> + * struct v4l2_ext_format - extended stream data format
> + * @type: enum v4l2_buf_type; type of the data stream.
> + * V4L2_BUF_TYPE_VIDEO[_OUTPUT]_OVERLAY and
> + * V4L2_BUF_TYPE_VIDEO_{CAPTURE,OUTPUT}_MPLANE are not supported
> + * @pix: definition of an image format. Used for
> + * V4L2_BUF_TYPE_VIDEO_{CAPTURE,OUTPUT} types
> + * @vbi: raw VBI capture or output parameters. Used for
> + * V4L2_BUF_TYPE_VBI_{CAPTURE,OUTPUT} types
> + * @sliced: sliced VBI capture or output parameters. Used for
> + * V4L2_BUF_TYPE_SLICED_VBI_{CAPTURE,OUTPUT} types.
> + * @sdr: SDR capture or output parameters. Used for
> + * V4L2_BUF_TYPE_SDR_{CAPTURE,OUTPUT} types
> + * @meta: meta capture or output parameters. Used for
> + * V4L2_BUF_TYPE_META_{CAPTURE,OUTPUT} types
> + * @raw_data: placeholder for future extensions and custom formats
> + */
> +struct v4l2_ext_format {
> + __u32 type;
> + union {
> + struct v4l2_ext_pix_format pix;
> + 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];
> + } fmt;
> +};
> +
> /* Stream type-dependent parameters
> */
> struct v4l2_streamparm {
> @@ -2480,6 +2558,9 @@ struct v4l2_create_buffers {
>
> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct
> v4l2_query_ext_ctrl)
>
> +#define VIDIOC_G_EXT_FMT _IOWR('V', 104, struct v4l2_ext_format)
> +#define VIDIOC_S_EXT_FMT _IOWR('V', 105, struct v4l2_ext_format)
> +#define VIDIOC_TRY_EXT_FMT _IOWR('V', 106, struct v4l2_ext_format)
> /* Reminder: when adding new ioctls please add support for them to
> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
>
>
Regards,
Hans
