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iio: Implement support for 8-, 16- and 64- bits channels

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This commit is contained in:
Bastien Nocera
2019-05-13 17:01:28 +02:00
committed by hadess
parent 6a67ead786
commit b468ed6384
1 changed files with 53 additions and 6 deletions
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59
src/iio-buffer-utils.c
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@@ -519,7 +519,40 @@ process_scan_1 (char *data,
info->shift, info->bits_used);
switch (info->bytes) {
/* only a few cases implemented so far */
case 1: {
guint8 input;
input = *(guint8 *)(data + info->location);
input >>= info->shift;
input &= info->mask;
if (info->is_signed) {
gint8 val = (gint8)(input << (8 - info->bits_used)) >>
(8 - info->bits_used);
val += info->offset;
*ch_val = val;
} else {
*ch_val = input + info->offset;
}
break;
}
case 2: {
guint16 input;
input = *(guint16 *)(data + info->location);
input = info->be ? GUINT16_FROM_BE (input) : GUINT16_FROM_LE (input);
input >>= info->shift;
input &= info->mask;
if (info->is_signed) {
gint16 val = (gint16)(input << (16 - info->bits_used)) >>
(16 - info->bits_used);
val += info->offset;
*ch_val = val;
} else {
*ch_val = input + info->offset;
}
break;
}
case 4: {
guint32 input;
@@ -538,12 +571,26 @@ process_scan_1 (char *data,
}
break;
}
case 1:
case 2:
case 8:
g_error ("Process %d bytes channels not supported yet", info->bytes);
case 8: {
guint64 input;
input = *(guint64 *)(data + info->location);
input = info->be ? GUINT64_FROM_BE (input) : GUINT64_FROM_LE (input);
input >>= info->shift;
input &= info->mask;
if (info->is_signed) {
gint64 val = (gint64)(input << (64 - info->bits_used)) >>
(64 - info->bits_used);
val += info->offset;
*ch_val = val;
} else {
*ch_val = input + info->offset;
}
break;
}
default:
g_assert_not_reached ();
g_error ("Process %d bytes channels not supported", info->bytes);
break;
}