void sha256_tx_for_sig(struct sha256_double *h, const struct bitcoin_tx *tx,
unsigned int input_num,
const u8 *witness_script)
{
size_t i;
struct sha256_ctx ctx = SHA256_INIT;
/* Caller should zero-out other scripts for signing! */
assert(input_num < tal_count(tx->input));
for (i = 0; i < tal_count(tx->input); i++)
if (i != input_num)
assert(!tx->input[i].script);
if (witness_script) {
/* BIP143 hashing if OP_CHECKSIG is inside witness. */
hash_for_segwit(&ctx, tx, input_num, witness_script);
} else {
/* Otherwise signature hashing never includes witness. */
push_tx(tx, push_sha, &ctx, false);
}
sha256_le32(&ctx, SIGHASH_ALL);
sha256_double_done(&ctx, h);
}
void midi_keyboard_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
const int keyboard_notes[24] =
{
0x3c, // C1
0x3d, // C1#
0x3e, // D1
0x3f, // D1#
0x40, // E1
0x41, // F1
0x42, // F1#
0x43, // G1
0x44, // G1#
0x45, // A1
0x46, // A1#
0x47, // B1
0x48, // C2
0x49, // C2#
0x4a, // D2
0x4b, // D2#
0x4c, // E2
0x4d, // F2
0x4e, // F2#
0x4f, // G2
0x50, // G2#
0x51, // A2
0x52, // A2#
0x53, // B2
};
int i;
UINT32 kbstate = m_keyboard->read();
if(kbstate != m_keyboard_state)
{
for (i=0; i < 24; i++)
{
int kbnote = keyboard_notes[i];
if ((m_keyboard_state & (1 << i)) != 0 && (kbstate & (1 << i)) == 0)
{
// key was on, now off -> send Note Off message
push_tx(0x80);
push_tx(kbnote);
push_tx(0x7f);
}
else if ((m_keyboard_state & (1 << i)) == 0 && (kbstate & (1 << i)) != 0)
{
// key was off, now on -> send Note On message
push_tx(0x90);
push_tx(kbnote);
push_tx(0x7f);
}
}
}
else
// no messages, send Active Sense message instead
push_tx(0xfe);
m_keyboard_state = kbstate;
if(is_transmit_register_empty())
tra_complete();
}
u8 *linearize_tx(const tal_t *ctx, const struct bitcoin_tx *tx)
{
u8 *arr = tal_arr(ctx, u8, 0);
push_tx(tx, push_linearize, &arr, true);
return arr;
}