[PATCH v7 1/9] media: v4l2: Extend pixel formats to unify single/multi-planar handling (and more)
From: ayaka
Date: Sun Feb 05 2023 - 23:33:52 EST
From: Randy Li <ayaka@xxxxxxxxxxx>
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_pix_format, other types will be rejected if you use the
{G,S,TRY}_EXT_PIX_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_PIX_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@xxxxxxxxxxxxx>
Signed-off-by: Helen Koike <helen.koike@xxxxxxxxxxxxx>
Signed-off-by: Randy Li <ayaka@xxxxxxxxxxx>
---
Changes in v7:
- use the resevered fields in v4l2_fmtdesc to store the modifier for format
enumerate.
- Dropping the old ioctl() calling new interfaces adapter.
- Refresh the patch
Changes in v6:
The main change here was fixing the conversion, so planes reflects color planes,
and to implement this properly I made major refactors compared to the previous
version.
- struct v4l2_plane_ext_pix_format removed, using struct v4l2_plane_pix_format instead (Tomasz)
- refer to drm_fourcc.h in struct v4l2_ext_pix_format docs (Hans)
- reorder colorimetry fields in struct v4l2_ext_pix_format (Hans)
- do not set Ext ioctls as valid for vid_out_overlay (Tomasz)
- refactor conversion functions, so planes are color planes (Tomasz)
- Don't explicitly check for e->modifier != 0 in v4l2_ext_pix_format_to_format() (Tomasz)
- Use "ef" for extended formats in the framework for consistency (Tomasz)
- Handle xfer_func field in conversions (Tomasz)
- Zero reserved fields in v4l_s_ext_pix_fmt() and v4l_try_ext_pix_fmt() (Tomasz)
- Refactor format functions to use v4l_fmt_ioctl_via_ext()
- Several fixes/refactoring/changes
- Remove EXT API for touch devices
Changes in v5:
- change sizes and reorder fields to avoid holes in the struct and make
it the same for 32 and 64 bits
- removed __attribute__ ((packed)) from uapi structs
- Fix doc warning from make htmldocs
- Updated commit message with EXT_PIX prefix for the ioctls.
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 | 13 +
drivers/media/v4l2-core/v4l2-ioctl.c | 357 ++++++++++++++++++++++++++-
include/media/v4l2-ioctl.h | 28 +++
include/uapi/linux/videodev2.h | 46 +++-
4 files changed, 438 insertions(+), 6 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index 397d553177fa..cfe90bfd47f1 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -615,6 +615,10 @@ static void determine_valid_ioctls(struct video_device *vdev)
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_g_ext_pix_fmt_vid_cap) ||
+ (is_tx && ops->vidioc_g_ext_pix_fmt_vid_out)) {
+ __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_fmt_vid_overlay)) ||
@@ -622,6 +626,11 @@ static void determine_valid_ioctls(struct video_device *vdev)
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_s_ext_pix_fmt_vid_cap) ||
+ (is_tx && ops->vidioc_s_ext_pix_fmt_vid_out)) {
+ __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_fmt_vid_overlay)) ||
@@ -629,6 +638,10 @@ static void determine_valid_ioctls(struct video_device *vdev)
ops->vidioc_try_fmt_vid_out_mplane ||
ops->vidioc_try_fmt_vid_out_overlay)))
__set_bit(_IOC_NR(VIDIOC_TRY_FMT), valid_ioctls);
+ if ((is_rx && ops->vidioc_try_ext_pix_fmt_vid_cap) ||
+ (is_tx && ops->vidioc_try_ext_pix_fmt_vid_out)) {
+ __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);
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 87f163a89c80..52b77a968bb3 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -18,8 +18,10 @@
#include <linux/v4l2-subdev.h>
#include <linux/videodev2.h>
+#include <drm/drm_fourcc.h>
#include <media/media-device.h> /* for media_set_bus_info() */
+
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
@@ -34,6 +36,11 @@
#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
+#define V4L2_IS_CAP_MULTIPLANAR(vdev) (vdev->device_caps & \
+ (V4L2_CAP_VIDEO_CAPTURE_MPLANE | \
+ V4L2_CAP_VIDEO_OUTPUT_MPLANE | \
+ V4L2_CAP_VIDEO_M2M_MPLANE))
+
struct std_descr {
v4l2_std_id std;
const char *descr;
@@ -353,6 +360,27 @@ 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 *ef = 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(ef->type, v4l2_type_names),
+ ef->width, ef->height,
+ (ef->pixelformat & 0xff),
+ (ef->pixelformat >> 8) & 0xff,
+ (ef->pixelformat >> 16) & 0xff,
+ (ef->pixelformat >> 24) & 0xff,
+ ef->modifier, prt_names(ef->field, v4l2_field_names),
+ ef->colorspace, ef->ycbcr_enc,
+ ef->quantization, ef->xfer_func);
+ for (i = 0; i < VIDEO_MAX_PLANES && ef->plane_fmt[i].sizeimage; i++)
+ pr_debug("plane %u: bytesperline=%u sizeimage=%u\n",
+ i, ef->plane_fmt[i].bytesperline,
+ ef->plane_fmt[i].sizeimage);
+}
+
static void v4l_print_framebuffer(const void *arg, bool write_only)
{
const struct v4l2_framebuffer *p = arg;
@@ -940,7 +968,9 @@ 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:
@@ -953,7 +983,9 @@ 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:
@@ -1082,6 +1114,203 @@ static void v4l_sanitize_format(struct v4l2_format *fmt)
}
}
+static void
+v4l2_ext_pix_format_to_pix_format(const struct v4l2_ext_pix_format *ef,
+ struct v4l2_pix_format *pix)
+{
+ unsigned int i;
+
+ pix->width = ef->width;
+ pix->height = ef->height;
+ pix->field = ef->field;
+ pix->flags = V4L2_PIX_FMT_FLAG_SET_CSC;
+ pix->colorspace = ef->colorspace;
+ pix->ycbcr_enc = ef->ycbcr_enc;
+ pix->priv = V4L2_PIX_FMT_PRIV_MAGIC;
+ pix->quantization = ef->quantization;
+ pix->pixelformat = ef->pixelformat;
+ pix->bytesperline = ef->plane_fmt[0].bytesperline;
+ pix->sizeimage = ef->plane_fmt[0].sizeimage;
+ for (i = 1; i < VIDEO_MAX_PLANES && ef->plane_fmt[i].sizeimage; i++)
+ pix->sizeimage += ef->plane_fmt[i].sizeimage;
+}
+
+static void
+v4l2_ext_pix_format_to_pix_mp_format(const struct v4l2_ext_pix_format *ef,
+ struct v4l2_pix_format_mplane *pix_mp)
+{
+ const struct v4l2_format_info *info =
+ v4l2_format_info(ef->pixelformat);
+ unsigned int i;
+
+ pix_mp->width = ef->width;
+ pix_mp->height = ef->height;
+ pix_mp->field = ef->field;
+ pix_mp->flags = V4L2_PIX_FMT_FLAG_SET_CSC;
+ pix_mp->colorspace = ef->colorspace;
+ pix_mp->ycbcr_enc = ef->ycbcr_enc;
+ pix_mp->quantization = ef->quantization;
+ pix_mp->pixelformat = ef->pixelformat;
+
+ /* This is true when converting to non-M-variant */
+ if (info && info->mem_planes == 1) {
+ pix_mp->plane_fmt[0] = ef->plane_fmt[0];
+ pix_mp->num_planes = 1;
+ for (i = 1; i < VIDEO_MAX_PLANES && ef->plane_fmt[i].sizeimage; i++)
+ pix_mp->plane_fmt[0].sizeimage += ef->plane_fmt[i].sizeimage;
+
+ return;
+ }
+
+ for (i = 0; i < VIDEO_MAX_PLANES && ef->plane_fmt[i].sizeimage; i++)
+ pix_mp->plane_fmt[i] = ef->plane_fmt[i];
+ pix_mp->num_planes = i;
+}
+
+/*
+ * v4l2_ext_pix_format_to_format - convert to v4l2_ext_pix_format to v4l2_format
+ *
+ * @ef: A pointer to struct struct v4l2_ext_pix_format to be converted.
+ * @f: A pointer to struct v4l2_format to be filled.
+ * @is_mplane: Bool indicating if multiplanar API should be used in @f.
+ *
+ * If pixelformat should be converted to M-variant, change ef->pixelformat
+ * to the M-variant before calling this function.
+ */
+static void v4l2_ext_pix_format_to_format(const struct v4l2_ext_pix_format *ef,
+ struct v4l2_format *f, bool is_mplane)
+{
+ memset(f, 0, sizeof(*f));
+
+ if (ef->modifier != DRM_FORMAT_MOD_LINEAR &&
+ ef->modifier != DRM_FORMAT_MOD_INVALID)
+ pr_warn("Modifiers are not supported in v4l2_format, ignoring %llx\n",
+ ef->modifier);
+
+ if (!is_mplane) {
+ f->type = ef->type;
+ v4l2_ext_pix_format_to_pix_format(ef, &f->fmt.pix);
+ return;
+ }
+
+ if (ef->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ else
+ f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+
+ v4l2_ext_pix_format_to_pix_mp_format(ef, &f->fmt.pix_mp);
+}
+
+static void
+v4l2_pix_format_to_ext_pix_format(const struct v4l2_pix_format *pix,
+ struct v4l2_ext_pix_format *ef)
+{
+ const struct v4l2_format_info *info =
+ v4l2_format_info(pix->pixelformat);
+ unsigned int i;
+
+ ef->width = pix->width;
+ ef->height = pix->height;
+ ef->field = pix->field;
+ ef->colorspace = pix->colorspace;
+ ef->ycbcr_enc = pix->ycbcr_enc;
+ ef->quantization = pix->quantization;
+ ef->xfer_func = pix->xfer_func;
+ if (pix->flags)
+ pr_warn("Ignoring pixelformat flags 0x%x\n", pix->flags);
+
+ /* We assume M-variants won't be used in this function */
+ ef->pixelformat = pix->pixelformat;
+
+ ef->plane_fmt[0].bytesperline = pix->bytesperline;
+ ef->plane_fmt[0].sizeimage = pix->sizeimage;
+
+ if (!info)
+ return;
+
+ for (i = 1; i < info->comp_planes; i++) {
+ ef->plane_fmt[i].bytesperline = pix->bytesperline / info->hdiv;
+ ef->plane_fmt[i].sizeimage = ef->plane_fmt[i].bytesperline *
+ ef->height / info->vdiv;
+ ef->plane_fmt[0].sizeimage -= ef->plane_fmt[i].sizeimage;
+ }
+}
+
+static void
+v4l2_pix_mp_format_to_ext_pix_format(const struct v4l2_pix_format_mplane *pix_mp,
+ struct v4l2_ext_pix_format *ef)
+{
+ const struct v4l2_format_info *info =
+ v4l2_format_info(pix_mp->pixelformat);
+ unsigned int i;
+
+ ef->width = pix_mp->width;
+ ef->height = pix_mp->height;
+ ef->field = pix_mp->field;
+ ef->colorspace = pix_mp->colorspace;
+ ef->ycbcr_enc = pix_mp->ycbcr_enc;
+ ef->quantization = pix_mp->quantization;
+ ef->xfer_func = pix_mp->xfer_func;
+ if (pix_mp->flags)
+ pr_warn("Ignoring pixelformat flags 0x%x\n", pix_mp->flags);
+
+ if (!info)
+ return;
+
+ ef->pixelformat = pix_mp->pixelformat;
+
+ if (info->comp_planes == info->mem_planes) {
+ for (i = 0; i < pix_mp->num_planes && i < VIDEO_MAX_PLANES; i++)
+ ef->plane_fmt[i] = pix_mp->plane_fmt[i];
+
+ return;
+ }
+
+ /* case where mem_planes is 1 and comp_planes > 1 */
+ ef->plane_fmt[0] = pix_mp->plane_fmt[0];
+ for (i = 1; i < info->comp_planes; i++) {
+ ef->plane_fmt[i].bytesperline =
+ pix_mp->plane_fmt[0].bytesperline / info->hdiv;
+ ef->plane_fmt[i].sizeimage =
+ ef->plane_fmt[i].bytesperline * ef->height / info->vdiv;
+ ef->plane_fmt[0].sizeimage -= ef->plane_fmt[i].sizeimage;
+ }
+}
+
+/*
+ * v4l2_format_to_ext_pix_format - convert to v4l2_format to v4l2_ext_pix_format
+ *
+ * @f: A pointer to struct v4l2_format to be converted.
+ * @ef: A pointer to struct struct v4l2_ext_pix_format to be filled.
+ *
+ * This method normalize the pixelformat to non-M variant.
+ */
+static void v4l2_format_to_ext_pix_format(const struct v4l2_format *f,
+ struct v4l2_ext_pix_format *ef)
+{
+ memset(ef, 0, sizeof(*ef));
+
+ switch (f->type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ ef->type = f->type;
+ v4l2_pix_format_to_ext_pix_format(&f->fmt.pix, ef);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+ ef->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ v4l2_pix_mp_format_to_ext_pix_format(&f->fmt.pix_mp, ef);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+ ef->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ v4l2_pix_mp_format_to_ext_pix_format(&f->fmt.pix_mp, ef);
+ break;
+ default:
+ WARN("Converting to Ext Pix Format with wrong buffer type %s\n",
+ prt_names(f->type, v4l2_type_names));
+ break;
+ }
+}
+
static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
@@ -1654,7 +1883,9 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
v4l_pix_format_touch(&p->fmt.pix);
return ret;
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);
+ break;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
case V4L2_BUF_TYPE_VBI_CAPTURE:
@@ -1662,7 +1893,8 @@ 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))
+ if (unlikely(!ops->vidioc_g_fmt_vid_out &&
+ !ops->vidioc_g_ext_pix_fmt_vid_out))
break;
p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
@@ -1670,7 +1902,9 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
return ret;
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);
+ 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:
@@ -1689,6 +1923,42 @@ 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 = 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;
+
+ v4l2_format_to_ext_pix_format(&f, ef);
+ return 0;
+}
+
static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
@@ -1794,6 +2064,42 @@ 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 = check_fmt(file, ef->type);
+
+ if (ret)
+ return ret;
+
+ memset(ef->reserved, 0, sizeof(ef->reserved));
+
+ 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;
+ }
+
+ v4l2_ext_pix_format_to_format(ef, &f, V4L2_IS_CAP_MULTIPLANAR(vfd));
+
+ ret = v4l_s_fmt(ops, file, fh, &f);
+ if (ret)
+ return ret;
+
+ v4l2_format_to_ext_pix_format(&f, ef);
+ return 0;
+}
+
static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
@@ -1896,6 +2202,44 @@ 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 = check_fmt(file, ef->type);
+
+ if (ret)
+ return ret;
+
+ memset(ef->reserved, 0, sizeof(ef->reserved));
+
+ 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;
+ }
+
+ v4l2_ext_pix_format_to_format(ef, &f, V4L2_IS_CAP_MULTIPLANAR(vfd));
+
+ ret = v4l_try_fmt(ops, file, fh, &f);
+ if (ret)
+ return ret;
+
+ v4l2_format_to_ext_pix_format(&f, ef);
+ return 0;
+}
+
static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
@@ -2902,6 +3246,9 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
+ IOCTL_INFO(VIDIOC_G_EXT_PIX_FMT, v4l_g_ext_pix_fmt, v4l_print_ext_pix_format, 0),
+ IOCTL_INFO(VIDIOC_S_EXT_PIX_FMT, v4l_s_ext_pix_fmt, v4l_print_ext_pix_format, INFO_FL_PRIO),
+ IOCTL_INFO(VIDIOC_TRY_EXT_PIX_FMT, v4l_try_ext_pix_fmt, v4l_print_ext_pix_format, 0),
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index edb733f21604..c44708dc9355 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_g_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_g_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 *ef);
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 *ef);
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 *ef);
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 *ef);
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 *ef);
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 *ef);
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,
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 17a9b975177a..74a8dd7f7637 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -840,7 +840,8 @@ struct v4l2_fmtdesc {
__u8 description[32]; /* Description string */
__u32 pixelformat; /* Format fourcc */
__u32 mbus_code; /* Media bus code */
- __u32 reserved[3];
+ __u64 modifier; /* Format modifier */
+ __u32 reserved;
};
#define V4L2_FMT_FLAG_COMPRESSED 0x0001
@@ -2417,6 +2418,45 @@ struct v4l2_format {
} fmt;
};
+/**
+ * struct v4l2_ext_pix_format - extended multiplanar format definition
+ * @type: enum v4l2_buf_type; type of the data stream
+ * @width: image width in pixels
+ * @height: image height in pixels
+ * @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) as defined in drm_fourcc.h
+ * @field: enum v4l2_field; field order (for interlaced video)
+ * @colorspace: enum v4l2_colorspace; supplemental to pixelformat
+ * @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
+ * @reserved: drivers and applications must zero this array
+ */
+struct v4l2_ext_pix_format {
+ __u32 type;
+ __u32 width;
+ __u32 height;
+ __u32 pixelformat;
+ __u64 modifier;
+ __u32 field;
+ __u32 colorspace;
+
+ struct v4l2_plane_pix_format plane_fmt[VIDEO_MAX_PLANES];
+ __u8 flags;
+ union {
+ __u8 ycbcr_enc;
+ __u8 hsv_enc;
+ };
+ __u8 quantization;
+ __u8 xfer_func;
+ __u32 reserved[10];
+} __attribute__ ((packed));
+
/* Stream type-dependent parameters
*/
struct v4l2_streamparm {
@@ -2690,6 +2730,10 @@ 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! */
--
2.17.1