@@ -201,7 +201,15 @@ static int vidioc_enum_fmt(struct file *file, void *priv,
struct hantro_ctx *ctx = fh_to_ctx(priv);
const struct hantro_fmt *fmt, *formats;
unsigned int num_fmts, i, j = 0;
- bool skip_mode_none;
+ bool skip_mode_none, enum_all_formats;
+ u32 index = f->index & ~V4L2_FMTDESC_FLAG_ENUM_ALL;
+
+ /*
+ * If the V4L2_FMTDESC_FLAG_ENUM_ALL flag is set, we want to enumerate all
+ * hardware supported pixel formats
+ */
+ enum_all_formats = !!(f->index & V4L2_FMTDESC_FLAG_ENUM_ALL);
+ f->index = index;
/*
* When dealing with an encoder:
@@ -222,9 +230,9 @@ static int vidioc_enum_fmt(struct file *file, void *priv,
if (skip_mode_none == mode_none)
continue;
- if (!hantro_check_depth_match(fmt, ctx->bit_depth))
+ if (!hantro_check_depth_match(fmt, ctx->bit_depth) && !enum_all_formats)
continue;
- if (j == f->index) {
+ if (j == index) {
f->pixelformat = fmt->fourcc;
return 0;
}
@@ -242,9 +250,9 @@ static int vidioc_enum_fmt(struct file *file, void *priv,
for (i = 0; i < num_fmts; i++) {
fmt = &formats[i];
- if (!hantro_check_depth_match(fmt, ctx->bit_depth))
+ if (!hantro_check_depth_match(fmt, ctx->bit_depth) && !enum_all_formats)
continue;
- if (j == f->index) {
+ if (j == index) {
f->pixelformat = fmt->fourcc;
return 0;
}
By adding support for the V4L2_FMTDESC_FLAG_ENUM_ALL flag into the driver we allow userspace applications to discover all possible pixel formats of the hardware block. This way userspace can decide which decoder to use given the supported pixel formats. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> --- .../media/platform/verisilicon/hantro_v4l2.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-)