Am 07.09.2017 20:03, schrieb Hans Verkuil:
> From: Hans Verkuil <hans.verk...@cisco.com>
>
> Support the Room Configuration Data Block and the Speaker Location
> Data Block.
>
> Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
> ---
> edid-decode.c | 79
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
> 1 file changed, 76 insertions(+), 3 deletions(-)
>
> diff --git a/edid-decode.c b/edid-decode.c
> index 9b6c297e..bdeb0c49 100644
> --- a/edid-decode.c
> +++ b/edid-decode.c
> @@ -1614,7 +1614,7 @@ static struct field *vcdb_fields[] = {
> &CE_scan,
> };
>
> -static const char *sadb_map[] = {
> +static const char *speaker_map[] = {
> "FL/FR - Front Left/Right",
> "LFE - Low Frequency Effects",
> "FC - Front Center",
> @@ -1647,13 +1647,78 @@ cea_sadb(unsigned char *x)
>
> printf(" Speaker map:\n");
>
> - for (i = 0; i < ARRAY_SIZE(sadb_map); i++) {
> + for (i = 0; i < ARRAY_SIZE(speaker_map); i++) {
> if ((sad >> i) & 1)
> - printf(" %s\n", sadb_map[i]);
> + printf(" %s\n", speaker_map[i]);
> }
> }
> }
>
> +static float
> +uchar_to_float(unsigned char x)
> +{
> + signed char s = (signed char)x;
> +
> + return s / 64.0;
> +}
The Name is a bit unfortunate as there is more than a type change
to be fair i have no better name, to_64flt() ?
re,
wh
> +
> +static void
> +cea_rcdb(unsigned char *x)
> +{
> + int length = x[0] & 0x1f;
> + uint32_t spm = ((x[5] << 16) | (x[4] << 8) | x[3]);
> + int i;
> +
> + if (length < 12)
> + return;
> +
> + if (x[2] & 0x40)
> + printf(" Speaker count: %d\n", x[2] & 0x1f);
> +
> + printf(" Speaker Presence Mask:\n");
> + for (i = 0; i < ARRAY_SIZE(speaker_map); i++) {
> + if ((spm >> i) & 1)
> + printf(" %s\n", speaker_map[i]);
> + }
> + if (x[2] & 0x20) {
> + printf(" Xmax: %d dm\n", x[6]);
> + printf(" Ymax: %d dm\n", x[7]);
> + printf(" Zmax: %d dm\n", x[8]);
> + }
> + if (x[2] & 0x80) {
> + printf(" DisplayX: %.3f * Xmax\n", uchar_to_float(x[9]));
> + printf(" DisplayY: %.3f * Ymax\n", uchar_to_float(x[10]));
> + printf(" DisplayZ: %.3f * Zmax\n", uchar_to_float(x[11]));
> + }
> +}
> +
> +static void
> +cea_sldb(unsigned char *x)
> +{
> + int length = x[0] & 0x1f;
> +
> + if (length < 2)
> + return;
> +
> + x += 2;
> + length -= 2;
> +
> + while (length >= 2) {
> + printf(" Channel: %d (%sactive)\n", x[0] & 0x1f,
> + (x[0] & 0x20) ? "" : "not ");
> + if ((x[1] & 0x1f) < ARRAY_SIZE(speaker_map))
> + printf(" Speaker: %s\n", speaker_map[x[1] & 0x1f]);
> + if (length >= 5 && (x[0] & 0x40)) {
> + printf(" X: %.3f * Xmax\n", uchar_to_float(x[2]));
> + printf(" Y: %.3f * Ymax\n", uchar_to_float(x[3]));
> + printf(" Z: %.3f * Zmax\n", uchar_to_float(x[4]));
> + length -= 3;
> + }
> +
> + length -= 2;
> + }
> +}
> +
> static void
> cea_vcdb(unsigned char *x)
> {
> @@ -1811,6 +1876,14 @@ cea_block(unsigned char *x)
> case 0x12:
> printf("HDMI audio data block\n");
> break;
> + case 0x13:
> + printf("Room configuration data block\n");
> + cea_rcdb(x);
> + break;
> + case 0x14:
> + printf("Speaker location data block\n");
> + cea_sldb(x);
> + break;
> case 0x20:
> printf("InfoFrame data block\n");
> break;
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