On Fri, Feb 10, 2023 at 09:18:35AM +0100, Javier Martinez Canillas wrote:
> Commit 9593126dae3e ("media: venus: Add a handling of QC08C compressed
> format") and commit cef92b14e653 ("media: venus: Add a handling of QC10C
> compressed format") added support for the QC08C and QC10C compressed
> formats respectively.
>
> But these also caused a regression, because the new formats where added
> at the beginning of the vdec_formats[] array and the vdec_inst_init()
> function sets the default format output and capture using fixed indexes
> of that array:
>
> static void vdec_inst_init(struct venus_inst *inst)
> {
> ...
> inst->fmt_out = &vdec_formats[8];
> inst->fmt_cap = &vdec_formats[0];
> ...
> }
>
> Since now V4L2_PIX_FMT_NV12 is not the first entry in the array anymore,
> the default capture format is not set to that as it was done before.
>
> Both commits changed the first index to keep inst->fmt_out default format
> set to V4L2_PIX_FMT_H264, but did not update the latter to keep .fmt_out
> default format set to V4L2_PIX_FMT_NV12.
>
> Rather than updating the index to the current V4L2_PIX_FMT_NV12 position,
> let's reorder the entries so that this format is the first entry again.
>
> This would also make VIDIOC_ENUM_FMT report the V4L2_PIX_FMT_NV12 format
> with an index 0 as it did before the QC08C and QC10C formats were added.
>
> Fixes: 9593126dae3e ("media: venus: Add a handling of QC08C compressed format")
> Fixes: cef92b14e653 ("media: venus: Add a handling of QC10C compressed format")
> Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
I just came across this issue independently and can confirm this patch fixes
the GStreamer V4L2 decoder on QRB5165.
Tested-by: Jordan Crouse <jorcrous@xxxxxxxxxx>
> ---
>
> drivers/media/platform/qcom/venus/vdec.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
> index 4ceaba37e2e5..bb14bea9fe09 100644
> --- a/drivers/media/platform/qcom/venus/vdec.c
> +++ b/drivers/media/platform/qcom/venus/vdec.c
> @@ -31,15 +31,15 @@
> */
> static const struct venus_format vdec_formats[] = {
> {
> - .pixfmt = V4L2_PIX_FMT_QC08C,
> + .pixfmt = V4L2_PIX_FMT_NV12,
> .num_planes = 1,
> .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> }, {
> - .pixfmt = V4L2_PIX_FMT_QC10C,
> + .pixfmt = V4L2_PIX_FMT_QC08C,
> .num_planes = 1,
> .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> - },{
> - .pixfmt = V4L2_PIX_FMT_NV12,
> + }, {
> + .pixfmt = V4L2_PIX_FMT_QC10C,
> .num_planes = 1,
> .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> }, {
