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Make mixer ioctls load from a memory buffer rather than a file. This is prep for uploading the memory buffer to IO to be processed there.

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This commit is contained in:
px4dev
2012-12-29 00:01:04 -08:00
parent f0da789626
commit 35c82ff2fc
10 changed files with 536 additions and 464 deletions
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apps/drivers/px4io/px4io.cpp
+19 -17
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@@ -609,27 +609,29 @@ PX4IO::ioctl(file *filep, int cmd, unsigned long arg)
}
break;
case MIXERIOCLOADFILE: {
MixerGroup *newmixers;
const char *path = (const char *)arg;
case MIXERIOCLOADBUF: {
const char *buf = (const char *)arg;
unsigned buflen = strnlen(buf, 1024);
/* allocate a new mixer group and load it from the file */
newmixers = new MixerGroup(control_callback, (uintptr_t)&_controls);
if (_mixers == nullptr)
_mixers = new MixerGroup(control_callback, (uintptr_t)&_controls);
if (newmixers->load_from_file(path) != 0) {
delete newmixers;
ret = -EINVAL;
if (_mixers == nullptr) {
ret = -ENOMEM;
} else {
ret = _mixers->load_from_buf(buf, buflen);
if (ret != 0) {
debug("mixer load failed with %d", ret);
delete _mixers;
_mixers = nullptr;
ret = -EINVAL;
}
}
/* swap the new mixers in for the old */
if (_mixers != nullptr) {
delete _mixers;
}
_mixers = newmixers;
break;
}
break;
default:
/* not a recognised value */