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tweak

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This commit is contained in:
J. Nick Koston
2025-10-28 21:37:19 -05:00
parent aa98ccf3fd
commit 61bb4ef4f0
1 changed files with 15 additions and 11 deletions
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26
esphome/components/api/proto.h
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@@ -232,20 +232,24 @@ class ProtoWriteBuffer {
return;
}
if (value < (1ULL << 21)) {
// 2-3 bytes - common for field IDs and lengths
uint32_t size = (value < (1ULL << 14)) ? 2 : 3;
buffer->resize(start + size);
uint8_t *p = buffer->data() + start;
uint8_t *p;
if (value < (1ULL << 14)) {
// 2 bytes - common for medium field IDs and lengths
buffer->resize(start + 2);
p = buffer->data() + start;
p[0] = (value & 0x7F) | 0x80;
p[1] = (value >> 7) & 0x7F | (size == 3 ? 0x80 : 0);
if (size == 3) {
p[2] = (value >> 14) & 0x7F;
}
p[1] = (value >> 7) & 0x7F;
return;
}
if (value < (1ULL << 21)) {
// 3 bytes - rare
buffer->resize(start + 3);
p = buffer->data() + start;
p[0] = (value & 0x7F) | 0x80;
p[1] = ((value >> 7) & 0x7F) | 0x80;
p[2] = (value >> 14) & 0x7F;
return;
}
uint8_t *p;
// Rare case: 4-10 byte values - calculate size from bit position
// Value is guaranteed >= (1ULL << 21), so CLZ is safe (non-zero)