[PATCH v2 6/8] hantro: Refactor for V4L2 API spec compliancy

Ezequiel Garcia
2020-03-18T13:22:18Z

Refactor how S_FMT and TRY_FMT are handled, and also make sure
internal initial format and format reset are done properly.

The latter is achieved by making sure the same hantro_{set,try}_fmt
helpers are called on all paths that set the format (which is
part of the driver state).

This commit removes the following v4l2-compliance warnings:

test VIDIOC_G_FMT: OK
fail: v4l2-test-formats.cpp(711): Video Capture Multiplanar: TRY_FMT(G_FMT) != G_FMT
test VIDIOC_TRY_FMT: FAIL
fail: v4l2-test-formats.cpp(1116): Video Capture Multiplanar: S_FMT(G_FMT) != G_FMT
test VIDIOC_S_FMT: FAIL

Reported-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
v2:
* Fix warning by using a proper const qualifier
in hantro_needs_postproc() args.

drivers/staging/media/hantro/hantro.h | 3 +-
drivers/staging/media/hantro/hantro_v4l2.c | 70 ++++++++++++++--------
2 files changed, 47 insertions(+), 26 deletions(-)

diff --git a/drivers/staging/media/hantro/hantro.h b/drivers/staging/media/hantro/hantro.h
index 2089f88a44a2..3005207fc6fb 100644
--- a/drivers/staging/media/hantro/hantro.h
+++ b/drivers/staging/media/hantro/hantro.h
@@ -417,7 +417,8 @@ hantro_get_dst_buf(struct hantro_ctx *ctx)
}

static inline bool
-hantro_needs_postproc(struct hantro_ctx *ctx, const struct hantro_fmt *fmt)
+hantro_needs_postproc(const struct hantro_ctx *ctx,
+ const struct hantro_fmt *fmt)
{
return !hantro_is_encoder_ctx(ctx) && fmt->fourcc != V4L2_PIX_FMT_NV12;
}
diff --git a/drivers/staging/media/hantro/hantro_v4l2.c b/drivers/staging/media/hantro/hantro_v4l2.c
index 458b502ff01b..f28a94e2fa93 100644
--- a/drivers/staging/media/hantro/hantro_v4l2.c
+++ b/drivers/staging/media/hantro/hantro_v4l2.c
@@ -30,6 +30,11 @@
#include "hantro_hw.h"
#include "hantro_v4l2.h"

+static int hantro_set_fmt_out(struct hantro_ctx *ctx,
+ struct v4l2_pix_format_mplane *pix_mp);
+static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
+ struct v4l2_pix_format_mplane *pix_mp);
+
static const struct hantro_fmt *
hantro_get_formats(const struct hantro_ctx *ctx, unsigned int *num_fmts)
{
@@ -227,12 +232,12 @@ static int vidioc_g_fmt_cap_mplane(struct file *file, void *priv,
return 0;
}

-static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f,
- bool capture)
+static int hantro_try_fmt(const struct hantro_ctx *ctx,
+ struct v4l2_pix_format_mplane *pix_mp,
+ enum v4l2_buf_type type)
{
- struct hantro_ctx *ctx = fh_to_ctx(priv);
- struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
const struct hantro_fmt *fmt, *vpu_fmt;
+ bool capture = !V4L2_TYPE_IS_OUTPUT(type);
bool coded;

coded = capture == hantro_is_encoder_ctx(ctx);
@@ -246,7 +251,7 @@ static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f,
fmt = hantro_find_format(ctx, pix_mp->pixelformat);
if (!fmt) {
fmt = hantro_get_default_fmt(ctx, coded);
- f->fmt.pix_mp.pixelformat = fmt->fourcc;
+ pix_mp->pixelformat = fmt->fourcc;
}

if (coded) {
@@ -294,13 +299,13 @@ static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f,
static int vidioc_try_fmt_cap_mplane(struct file *file, void *priv,
struct v4l2_format *f)
{
- return vidioc_try_fmt(file, priv, f, true);
+ return hantro_try_fmt(fh_to_ctx(priv), &f->fmt.pix_mp, f->type);
}

static int vidioc_try_fmt_out_mplane(struct file *file, void *priv,
struct v4l2_format *f)
{
- return vidioc_try_fmt(file, priv, f, false);
+ return hantro_try_fmt(fh_to_ctx(priv), &f->fmt.pix_mp, f->type);
}

static void
@@ -334,11 +339,12 @@ hantro_reset_encoded_fmt(struct hantro_ctx *ctx)
}

hantro_reset_fmt(fmt, vpu_fmt);
- fmt->num_planes = 1;
fmt->width = vpu_fmt->frmsize.min_width;
fmt->height = vpu_fmt->frmsize.min_height;
- fmt->plane_fmt[0].sizeimage = vpu_fmt->header_size +
- fmt->width * fmt->height * vpu_fmt->max_depth;
+ if (hantro_is_encoder_ctx(ctx))
+ hantro_set_fmt_cap(ctx, fmt);
+ else
+ hantro_set_fmt_out(ctx, fmt);
}

static void
@@ -360,9 +366,12 @@ hantro_reset_raw_fmt(struct hantro_ctx *ctx)
}

hantro_reset_fmt(raw_fmt, raw_vpu_fmt);
- v4l2_fill_pixfmt_mp(raw_fmt, raw_vpu_fmt->fourcc,
- encoded_fmt->width,
- encoded_fmt->height);
+ raw_fmt->width = encoded_fmt->width;
+ raw_fmt->width = encoded_fmt->width;
+ if (hantro_is_encoder_ctx(ctx))
+ hantro_set_fmt_out(ctx, raw_fmt);
+ else
+ hantro_set_fmt_cap(ctx, raw_fmt);
}

void hantro_reset_fmts(struct hantro_ctx *ctx)
@@ -388,15 +397,15 @@ hantro_update_requires_request(struct hantro_ctx *ctx, u32 fourcc)
}
}

-static int
-vidioc_s_fmt_out_mplane(struct file *file, void *priv, struct v4l2_format *f)
+static int hantro_set_fmt_out(struct hantro_ctx *ctx,
+ struct v4l2_pix_format_mplane *pix_mp)
{
- struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
- struct hantro_ctx *ctx = fh_to_ctx(priv);
- struct vb2_queue *vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ struct vb2_queue *vq;
int ret;

- ret = vidioc_try_fmt_out_mplane(file, priv, f);
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+ V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
+ ret = hantro_try_fmt(ctx, pix_mp, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
if (ret)
return ret;

@@ -458,16 +467,15 @@ vidioc_s_fmt_out_mplane(struct file *file, void *priv, struct v4l2_format *f)
return 0;
}

-static int vidioc_s_fmt_cap_mplane(struct file *file, void *priv,
- struct v4l2_format *f)
+static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
+ struct v4l2_pix_format_mplane *pix_mp)
{
- struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
- struct hantro_ctx *ctx = fh_to_ctx(priv);
struct vb2_queue *vq;
int ret;

/* Change not allowed if queue is busy. */
- vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
if (vb2_is_busy(vq))
return -EBUSY;

@@ -488,7 +496,7 @@ static int vidioc_s_fmt_cap_mplane(struct file *file, void *priv,
return -EBUSY;
}

- ret = vidioc_try_fmt_cap_mplane(file, priv, f);
+ ret = hantro_try_fmt(ctx, pix_mp, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
if (ret)
return ret;

@@ -522,6 +530,18 @@ static int vidioc_s_fmt_cap_mplane(struct file *file, void *priv,
return 0;
}

+static int
+vidioc_s_fmt_out_mplane(struct file *file, void *priv, struct v4l2_format *f)
+{
+ return hantro_set_fmt_out(fh_to_ctx(priv), &f->fmt.pix_mp);
+}
+
+static int
+vidioc_s_fmt_cap_mplane(struct file *file, void *priv, struct v4l2_format *f)
+{
+ return hantro_set_fmt_cap(fh_to_ctx(priv), &f->fmt.pix_mp);
+}
+
const struct v4l2_ioctl_ops hantro_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_framesizes = vidioc_enum_framesizes,
--
2.25.0