static void vaapi_encode_h264_write_sei(PutBitContext *pbc,
VAAPIEncodeContext *ctx,
VAAPIEncodePicture *pic)
{
VAAPIEncodeH264Context *priv = ctx->priv_data;
PutBitContext payload_bits;
char payload[256];
int payload_type, payload_size, i;
void (*write_payload)(PutBitContext *pbc,
VAAPIEncodeContext *ctx,
VAAPIEncodePicture *pic) = NULL;
vaapi_encode_h264_write_nal_header(pbc, NAL_SEI, 0);
for (payload_type = 0; payload_type < 64; payload_type++) {
switch (payload_type) {
case SEI_TYPE_BUFFERING_PERIOD:
if (!priv->send_timing_sei ||
pic->type != PICTURE_TYPE_IDR)
continue;
write_payload = &vaapi_encode_h264_write_buffering_period;
break;
case SEI_TYPE_PIC_TIMING:
if (!priv->send_timing_sei)
continue;
write_payload = &vaapi_encode_h264_write_pic_timing;
break;
case SEI_TYPE_USER_DATA_UNREGISTERED:
if (pic->encode_order != 0)
continue;
write_payload = &vaapi_encode_h264_write_identifier;
break;
default:
continue;
}
init_put_bits(&payload_bits, payload, sizeof(payload));
write_payload(&payload_bits, ctx, pic);
if (put_bits_count(&payload_bits) & 7) {
write_u(&payload_bits, 1, 1, bit_equal_to_one);
while (put_bits_count(&payload_bits) & 7)
write_u(&payload_bits, 1, 0, bit_equal_to_zero);
}
payload_size = put_bits_count(&payload_bits) / 8;
flush_put_bits(&payload_bits);
u(8, payload_type, last_payload_type_byte);
u(8, payload_size, last_payload_size_byte);
for (i = 0; i < payload_size; i++)
u(8, payload[i] & 0xff, sei_payload);
}
vaapi_encode_h264_write_trailing_rbsp(pbc);
}
bool Message::send(Client& client) {
uint32_t remaining_length = variable_header_length() + payload_length();
uint32_t packet_length = fixed_header_length(remaining_length) + remaining_length;
uint8_t *packet = new uint8_t[packet_length];
uint32_t pos = 0;
write_fixed_header(packet, pos, remaining_length);
write_variable_header(packet, pos);
write_payload(packet, pos);
uint32_t sent = client.write(const_cast<const uint8_t*>(packet), packet_length);
delete [] packet;
return (sent == packet_length);
}
bool Radio::writeFast(const void *buf, uint8_t len, const bool multicast) {
// Let's block if FIFO is full or max number of retries is reached. Return 0 so the user can control the retries
// manually. The radio will auto-clear everything in the FIFO as long as CE remains high.
while (get_status() & _BV(TX_FULL)) {
// Max number of retries is reached, let's clear the flag and return 0.
if (get_status() & _BV(MAX_RT)) {
write_register(STATUS, _BV(MAX_RT));
return 0;
}
}
write_payload(buf, len, multicast ? W_TX_PAYLOAD_NO_ACK : W_TX_PAYLOAD);
return 1;
}
bool Radio::writeBlocking(const void *buf, uint8_t len, uint32_t timeout) {
uint32_t elapsed = 0;
while (get_status() & _BV(TX_FULL)) {
if (get_status() & _BV(MAX_RT)) {
// Set re-transmit and clear the MAX_RT interrupt flag.
reUseTX();
// If this payload has exceeded the user-defined timeout, exit and return 0.
if (elapsed > timeout) {
return 0;
}
}
_delay_ms(100);
elapsed += 100;
}
write_payload(buf, len, W_TX_PAYLOAD);
return 1;
}