Hi Sebastian,
On 29/05/2024 12:02, Sebastian Wick wrote:
> When `Max Stream Count` is zero, the sink does not support multistream
> and thus cannot support NonMixed MS.
>
> An EDID with Max Stream Count = 0 and Non Mixed MS = 1 can be found in
> linuxhw/EDID ./Digital/TCL/TCL5655/1723FF2DC6D1 at commit cff7fe4d44.
>
> Signed-off-by: Sebastian Wick <sebastian.wick@xxxxxxxxxx>
> ---
> parse-cta-block.cpp | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git ./parse-cta-block.cpp ../parse-cta-block.cpp
> index 4d2afc6..7cd7a3a 100644
> --- ./parse-cta-block.cpp
> +++ ../parse-cta-block.cpp
> @@ -2498,10 +2498,11 @@ static void cta_hdmi_audio_block(const unsigned char *x, unsigned length)
> fail("Empty Data Block with length %u.\n", length);
> return;
> }
> - if (x[0] & 3)
> + if (x[0] & 3) {
> printf(" Max Stream Count: %u\n", (x[0] & 3) + 1);
> - if (x[0] & 4)
> - printf(" Supports MS NonMixed\n");
> + if (x[0] & 4)
> + printf(" Supports MS NonMixed\n");
> + }
I would actually leave this as-is, but instead add a fail() message
if MS NonMixed is set, but Max Stream Count == 0.
It's really an EDID conformity failure, and it should be reported as such.
Regards,
Hans
>
> num_descs = x[1] & 7;
> if (num_descs == 0)
