void pkt_32x32(struct pkt_buf *b)
{
uint8_t id;
uint32_t addr;
uint32_t data;
bool is_write;
bool success;
nios_pkt_32x32_unpack(b->req, &id, &is_write, &addr, &data);
if (is_write) {
success = perform_write(id, addr, data);
} else {
success = perform_read(id, addr, &data);
}
nios_pkt_32x32_resp_pack(b->resp, id, is_write, addr, data, success);
}
/* Writes the specified bytes to the file handle. */
static MVMint64 write_bytes(MVMThreadContext *tc, MVMOSHandle *h, char *buf, MVMint64 bytes) {
MVMIOFileData *data = (MVMIOFileData *)h->body.data;
if (data->output_buffer_size && data->known_writable) {
/* If we can't fit it on the end of the buffer, flush the buffer. */
if (data->output_buffer_used + bytes > data->output_buffer_size)
flush_output_buffer(tc, data);
/* If we can fit it in the buffer now, memcpy it there, and we're
* done. */
if (bytes < data->output_buffer_size) {
memcpy(data->output_buffer + data->output_buffer_used, buf, bytes);
data->output_buffer_used += bytes;
return bytes;
}
}
perform_write(tc, data, buf, bytes);
return bytes;
}
static void
channel_is_usable(struct ev_loop *loop, ev_io *watcher, int revents)
{
pc_channel_t *channel = watcher->data;
pc_bool_t dirty = FALSE;
/* Note that we double-check the callbacks. We want to ignore
spurious signals to read or write, and then we want to try
to disable those events (again). */
if ((revents & EV_READ) != 0)
{
if (channel->desire_read)
dirty = perform_read(channel);
else
dirty = TRUE;
}
if ((revents & EV_WRITE) != 0)
{
if (channel->desire_write)
dirty |= perform_write(channel);
else
dirty = TRUE;
}
/* Do we need to adjust what events we're looking for? */
if (dirty)
{
int events = 0;
if (channel->desire_read)
events |= EV_READ;
if (channel->desire_write)
events |= EV_WRITE;
start_watcher(loop, watcher, events);
}
}
SWITCH_DECLARE(switch_status_t) switch_core_session_write_frame(switch_core_session_t *session, switch_frame_t *frame, switch_io_flag_t flags,
int stream_id)
{
switch_status_t status = SWITCH_STATUS_FALSE;
switch_frame_t *enc_frame = NULL, *write_frame = frame;
unsigned int flag = 0, need_codec = 0, perfect = 0, do_bugs = 0, do_write = 0, do_resample = 0, ptime_mismatch = 0, pass_cng = 0, resample = 0;
int did_write_resample = 0;
switch_assert(session != NULL);
switch_assert(frame != NULL);
if (!switch_channel_ready(session->channel)) {
return SWITCH_STATUS_FALSE;
}
if (switch_mutex_trylock(session->codec_write_mutex) == SWITCH_STATUS_SUCCESS) {
switch_mutex_unlock(session->codec_write_mutex);
} else {
return SWITCH_STATUS_SUCCESS;
}
if (switch_test_flag(frame, SFF_CNG)) {
if (switch_channel_test_flag(session->channel, CF_ACCEPT_CNG)) {
pass_cng = 1;
} else {
return SWITCH_STATUS_SUCCESS;
}
}
if (!(session->write_codec && switch_core_codec_ready(session->write_codec)) && !pass_cng) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "%s has no write codec.\n", switch_channel_get_name(session->channel));
switch_channel_hangup(session->channel, SWITCH_CAUSE_INCOMPATIBLE_DESTINATION);
return SWITCH_STATUS_FALSE;
}
if (switch_channel_test_flag(session->channel, CF_HOLD)) {
return SWITCH_STATUS_SUCCESS;
}
if (switch_test_flag(frame, SFF_PROXY_PACKET) || pass_cng) {
/* Fast PASS! */
switch_mutex_lock(session->codec_write_mutex);
status = perform_write(session, frame, flag, stream_id);
switch_mutex_unlock(session->codec_write_mutex);
return status;
}
switch_mutex_lock(session->codec_write_mutex);
if (!(frame->codec && frame->codec->implementation)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "%s has received a bad frame with no codec!\n",
switch_channel_get_name(session->channel));
switch_channel_hangup(session->channel, SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER);
switch_mutex_unlock(session->codec_write_mutex);
return SWITCH_STATUS_FALSE;
}
switch_assert(frame->codec != NULL);
switch_assert(frame->codec->implementation != NULL);
if (!(switch_core_codec_ready(session->write_codec) && frame->codec) ||
!switch_channel_ready(session->channel) || !switch_channel_media_ready(session->channel)) {
switch_mutex_unlock(session->codec_write_mutex);
return SWITCH_STATUS_FALSE;
}
switch_mutex_lock(session->write_codec->mutex);
switch_mutex_lock(frame->codec->mutex);
if (!(switch_core_codec_ready(session->write_codec) && switch_core_codec_ready(frame->codec))) goto error;
if ((session->write_codec && frame->codec && session->write_codec->implementation != frame->codec->implementation)) {
if (session->write_impl.codec_id == frame->codec->implementation->codec_id ||
session->write_impl.microseconds_per_packet != frame->codec->implementation->microseconds_per_packet) {
ptime_mismatch = TRUE;
if ((switch_test_flag(frame->codec, SWITCH_CODEC_FLAG_PASSTHROUGH) || switch_test_flag(session->read_codec, SWITCH_CODEC_FLAG_PASSTHROUGH)) ||
switch_channel_test_flag(session->channel, CF_PASSTHRU_PTIME_MISMATCH)) {
status = perform_write(session, frame, flags, stream_id);
goto error;
}
}
need_codec = TRUE;
}
if (session->write_codec && !frame->codec) {
need_codec = TRUE;
}
if (session->bugs && !need_codec) {
do_bugs = TRUE;
need_codec = TRUE;
}
if (frame->codec->implementation->actual_samples_per_second != session->write_impl.actual_samples_per_second) {
need_codec = TRUE;
do_resample = TRUE;
}
if (switch_test_flag(session, SSF_WRITE_TRANSCODE) && !need_codec && switch_core_codec_ready(session->write_codec)) {
switch_core_session_t *other_session;
const char *uuid = switch_channel_get_variable(switch_core_session_get_channel(session), SWITCH_SIGNAL_BOND_VARIABLE);
if (uuid && (other_session = switch_core_session_locate(uuid))) {
switch_set_flag(other_session, SSF_READ_CODEC_RESET);
switch_set_flag(other_session, SSF_READ_CODEC_RESET);
switch_set_flag(other_session, SSF_WRITE_CODEC_RESET);
switch_core_session_rwunlock(other_session);
}
switch_clear_flag(session, SSF_WRITE_TRANSCODE);
}
if (switch_test_flag(session, SSF_WRITE_CODEC_RESET)) {
switch_core_codec_reset(session->write_codec);
switch_clear_flag(session, SSF_WRITE_CODEC_RESET);
}
if (!need_codec) {
do_write = TRUE;
write_frame = frame;
goto done;
}
if (!switch_test_flag(session, SSF_WARN_TRANSCODE)) {
switch_core_session_message_t msg = { 0 };
msg.message_id = SWITCH_MESSAGE_INDICATE_TRANSCODING_NECESSARY;
switch_core_session_receive_message(session, &msg);
switch_set_flag(session, SSF_WARN_TRANSCODE);
}
if (frame->codec) {
session->raw_write_frame.datalen = session->raw_write_frame.buflen;
status = switch_core_codec_decode(frame->codec,
session->write_codec,
frame->data,
frame->datalen,
session->write_impl.actual_samples_per_second,
session->raw_write_frame.data, &session->raw_write_frame.datalen, &session->raw_write_frame.rate, &frame->flags);
if (do_resample && status == SWITCH_STATUS_SUCCESS) {
status = SWITCH_STATUS_RESAMPLE;
}
switch (status) {
case SWITCH_STATUS_RESAMPLE:
resample++;
write_frame = &session->raw_write_frame;
write_frame->rate = frame->codec->implementation->actual_samples_per_second;
if (!session->write_resampler) {
switch_mutex_lock(session->resample_mutex);
status = switch_resample_create(&session->write_resampler,
frame->codec->implementation->actual_samples_per_second,
session->write_impl.actual_samples_per_second,
session->write_impl.decoded_bytes_per_packet, SWITCH_RESAMPLE_QUALITY, 1);
switch_mutex_unlock(session->resample_mutex);
if (status != SWITCH_STATUS_SUCCESS) {
goto done;
}
}
break;
case SWITCH_STATUS_SUCCESS:
session->raw_write_frame.samples = session->raw_write_frame.datalen / sizeof(int16_t);
session->raw_write_frame.timestamp = frame->timestamp;
session->raw_write_frame.rate = frame->rate;
session->raw_write_frame.m = frame->m;
session->raw_write_frame.ssrc = frame->ssrc;
session->raw_write_frame.seq = frame->seq;
session->raw_write_frame.payload = frame->payload;
session->raw_write_frame.flags = 0;
if (switch_test_flag(frame, SFF_PLC)) {
session->raw_write_frame.flags |= SFF_PLC;
}
write_frame = &session->raw_write_frame;
break;
case SWITCH_STATUS_BREAK:
status = SWITCH_STATUS_SUCCESS;
goto error;
case SWITCH_STATUS_NOOP:
if (session->write_resampler) {
switch_mutex_lock(session->resample_mutex);
switch_resample_destroy(&session->write_resampler);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_NOTICE, "Deactivating write resampler\n");
switch_mutex_unlock(session->resample_mutex);
}
write_frame = frame;
status = SWITCH_STATUS_SUCCESS;
break;
default:
if (status == SWITCH_STATUS_NOT_INITALIZED) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec init error!\n");
goto error;
}
if (ptime_mismatch) {
status = perform_write(session, frame, flags, stream_id);
status = SWITCH_STATUS_SUCCESS;
goto error;
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec %s decoder error!\n",
frame->codec->codec_interface->interface_name);
goto error;
}
}
if (session->write_resampler) {
short *data = write_frame->data;
switch_mutex_lock(session->resample_mutex);
if (session->write_resampler) {
switch_resample_process(session->write_resampler, data, write_frame->datalen / 2);
memcpy(data, session->write_resampler->to, session->write_resampler->to_len * 2);
write_frame->samples = session->write_resampler->to_len;
write_frame->datalen = write_frame->samples * 2;
write_frame->rate = session->write_resampler->to_rate;
did_write_resample = 1;
}
switch_mutex_unlock(session->resample_mutex);
}
if (session->bugs) {
switch_media_bug_t *bp;
int prune = 0;
switch_thread_rwlock_rdlock(session->bug_rwlock);
for (bp = session->bugs; bp; bp = bp->next) {
switch_bool_t ok = SWITCH_TRUE;
if (!bp->ready) {
continue;
}
if (switch_channel_test_flag(session->channel, CF_PAUSE_BUGS) && !switch_core_media_bug_test_flag(bp, SMBF_NO_PAUSE)) {
continue;
}
if (!switch_channel_test_flag(session->channel, CF_ANSWERED) && switch_core_media_bug_test_flag(bp, SMBF_ANSWER_REQ)) {
continue;
}
if (switch_test_flag(bp, SMBF_PRUNE)) {
prune++;
continue;
}
if (switch_test_flag(bp, SMBF_WRITE_STREAM)) {
switch_mutex_lock(bp->write_mutex);
switch_buffer_write(bp->raw_write_buffer, write_frame->data, write_frame->datalen);
switch_mutex_unlock(bp->write_mutex);
if (bp->callback) {
ok = bp->callback(bp, bp->user_data, SWITCH_ABC_TYPE_WRITE);
}
}
if (switch_test_flag(bp, SMBF_WRITE_REPLACE)) {
do_bugs = 0;
if (bp->callback) {
bp->write_replace_frame_in = write_frame;
bp->write_replace_frame_out = write_frame;
if ((ok = bp->callback(bp, bp->user_data, SWITCH_ABC_TYPE_WRITE_REPLACE)) == SWITCH_TRUE) {
write_frame = bp->write_replace_frame_out;
}
}
}
if (bp->stop_time && bp->stop_time <= switch_epoch_time_now(NULL)) {
ok = SWITCH_FALSE;
}
if (ok == SWITCH_FALSE) {
switch_set_flag(bp, SMBF_PRUNE);
prune++;
}
}
switch_thread_rwlock_unlock(session->bug_rwlock);
if (prune) {
switch_core_media_bug_prune(session);
}
}
if (do_bugs) {
do_write = TRUE;
write_frame = frame;
goto done;
}
if (session->write_codec) {
if (!ptime_mismatch && write_frame->codec && write_frame->codec->implementation &&
write_frame->codec->implementation->decoded_bytes_per_packet == session->write_impl.decoded_bytes_per_packet) {
perfect = TRUE;
}
if (perfect) {
if (write_frame->datalen < session->write_impl.decoded_bytes_per_packet) {
memset(write_frame->data, 255, session->write_impl.decoded_bytes_per_packet - write_frame->datalen);
write_frame->datalen = session->write_impl.decoded_bytes_per_packet;
}
enc_frame = write_frame;
session->enc_write_frame.datalen = session->enc_write_frame.buflen;
status = switch_core_codec_encode(session->write_codec,
frame->codec,
enc_frame->data,
enc_frame->datalen,
session->write_impl.actual_samples_per_second,
session->enc_write_frame.data, &session->enc_write_frame.datalen, &session->enc_write_frame.rate, &flag);
switch (status) {
case SWITCH_STATUS_RESAMPLE:
resample++;
/* switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Fixme 2\n"); */
case SWITCH_STATUS_SUCCESS:
session->enc_write_frame.codec = session->write_codec;
session->enc_write_frame.samples = enc_frame->datalen / sizeof(int16_t);
if (frame->codec->implementation->samples_per_packet != session->write_impl.samples_per_packet) {
session->enc_write_frame.timestamp = 0;
} else {
session->enc_write_frame.timestamp = frame->timestamp;
}
session->enc_write_frame.payload = session->write_impl.ianacode;
session->enc_write_frame.m = frame->m;
session->enc_write_frame.ssrc = frame->ssrc;
session->enc_write_frame.seq = frame->seq;
write_frame = &session->enc_write_frame;
break;
case SWITCH_STATUS_NOOP:
enc_frame->codec = session->write_codec;
enc_frame->samples = enc_frame->datalen / sizeof(int16_t);
enc_frame->timestamp = frame->timestamp;
enc_frame->m = frame->m;
enc_frame->seq = frame->seq;
enc_frame->ssrc = frame->ssrc;
enc_frame->payload = enc_frame->codec->implementation->ianacode;
write_frame = enc_frame;
status = SWITCH_STATUS_SUCCESS;
break;
case SWITCH_STATUS_NOT_INITALIZED:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec init error!\n");
write_frame = NULL;
goto error;
default:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec %s encoder error!\n",
session->read_codec->codec_interface->interface_name);
write_frame = NULL;
goto error;
}
if (flag & SFF_CNG) {
switch_set_flag(write_frame, SFF_CNG);
}
status = perform_write(session, write_frame, flags, stream_id);
goto error;
} else {
if (!session->raw_write_buffer) {
switch_size_t bytes_per_packet = session->write_impl.decoded_bytes_per_packet;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG,
"Engaging Write Buffer at %u bytes to accommodate %u->%u\n",
(uint32_t) bytes_per_packet, write_frame->datalen, session->write_impl.decoded_bytes_per_packet);
if ((status = switch_buffer_create_dynamic(&session->raw_write_buffer,
bytes_per_packet * SWITCH_BUFFER_BLOCK_FRAMES,
bytes_per_packet * SWITCH_BUFFER_START_FRAMES, 0)) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Write Buffer Failed!\n");
goto error;
}
}
if (!(switch_buffer_write(session->raw_write_buffer, write_frame->data, write_frame->datalen))) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Write Buffer %u bytes Failed!\n", write_frame->datalen);
status = SWITCH_STATUS_MEMERR;
goto error;
}
status = SWITCH_STATUS_SUCCESS;
while (switch_buffer_inuse(session->raw_write_buffer) >= session->write_impl.decoded_bytes_per_packet) {
int rate;
if (switch_channel_down(session->channel) || !session->raw_write_buffer) {
goto error;
}
if ((session->raw_write_frame.datalen = (uint32_t)
switch_buffer_read(session->raw_write_buffer, session->raw_write_frame.data, session->write_impl.decoded_bytes_per_packet)) == 0) {
goto error;
}
enc_frame = &session->raw_write_frame;
session->raw_write_frame.rate = session->write_impl.actual_samples_per_second;
session->enc_write_frame.datalen = session->enc_write_frame.buflen;
session->enc_write_frame.timestamp = 0;
if (frame->codec && frame->codec->implementation && switch_core_codec_ready(frame->codec)) {
rate = frame->codec->implementation->actual_samples_per_second;
} else {
rate = session->write_impl.actual_samples_per_second;
}
status = switch_core_codec_encode(session->write_codec,
frame->codec,
enc_frame->data,
enc_frame->datalen,
rate,
session->enc_write_frame.data, &session->enc_write_frame.datalen, &session->enc_write_frame.rate, &flag);
switch (status) {
case SWITCH_STATUS_RESAMPLE:
resample++;
session->enc_write_frame.codec = session->write_codec;
session->enc_write_frame.samples = enc_frame->datalen / sizeof(int16_t);
session->enc_write_frame.m = frame->m;
session->enc_write_frame.ssrc = frame->ssrc;
session->enc_write_frame.payload = session->write_impl.ianacode;
write_frame = &session->enc_write_frame;
if (!session->write_resampler) {
switch_mutex_lock(session->resample_mutex);
if (!session->write_resampler) {
status = switch_resample_create(&session->write_resampler,
frame->codec->implementation->actual_samples_per_second,
session->write_impl.actual_samples_per_second,
session->write_impl.decoded_bytes_per_packet, SWITCH_RESAMPLE_QUALITY, 1);
}
switch_mutex_unlock(session->resample_mutex);
if (status != SWITCH_STATUS_SUCCESS) {
goto done;
}
}
break;
case SWITCH_STATUS_SUCCESS:
session->enc_write_frame.codec = session->write_codec;
session->enc_write_frame.samples = enc_frame->datalen / sizeof(int16_t);
session->enc_write_frame.m = frame->m;
session->enc_write_frame.ssrc = frame->ssrc;
session->enc_write_frame.payload = session->write_impl.ianacode;
write_frame = &session->enc_write_frame;
break;
case SWITCH_STATUS_NOOP:
if (session->write_resampler) {
switch_mutex_lock(session->resample_mutex);
if (session->write_resampler) {
switch_resample_destroy(&session->write_resampler);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_NOTICE, "Deactivating write resampler\n");
}
switch_mutex_unlock(session->resample_mutex);
}
enc_frame->codec = session->write_codec;
enc_frame->samples = enc_frame->datalen / sizeof(int16_t);
enc_frame->m = frame->m;
enc_frame->ssrc = frame->ssrc;
enc_frame->payload = enc_frame->codec->implementation->ianacode;
write_frame = enc_frame;
status = SWITCH_STATUS_SUCCESS;
break;
case SWITCH_STATUS_NOT_INITALIZED:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec init error!\n");
write_frame = NULL;
goto error;
default:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec %s encoder error %d!\n",
session->read_codec->codec_interface->interface_name, status);
write_frame = NULL;
goto error;
}
if (!did_write_resample && session->read_resampler) {
short *data = write_frame->data;
switch_mutex_lock(session->resample_mutex);
if (session->read_resampler) {
switch_resample_process(session->read_resampler, data, write_frame->datalen / 2);
memcpy(data, session->read_resampler->to, session->read_resampler->to_len * 2);
write_frame->samples = session->read_resampler->to_len;
write_frame->datalen = session->read_resampler->to_len * 2;
write_frame->rate = session->read_resampler->to_rate;
}
switch_mutex_unlock(session->resample_mutex);
}
if (flag & SFF_CNG) {
switch_set_flag(write_frame, SFF_CNG);
}
if (ptime_mismatch || resample) {
write_frame->timestamp = 0;
}
if ((status = perform_write(session, write_frame, flags, stream_id)) != SWITCH_STATUS_SUCCESS) {
break;
}
}
goto error;
}
}
done:
if (ptime_mismatch || resample) {
write_frame->timestamp = 0;
}
if (do_write) {
status = perform_write(session, write_frame, flags, stream_id);
}
error:
switch_mutex_unlock(session->write_codec->mutex);
switch_mutex_unlock(frame->codec->mutex);
switch_mutex_unlock(session->codec_write_mutex);
return status;
}
int main(int argc, char **argv)
{
// action to be performed
int act = '\0';
// address offset to the device
uint32_t addr = 0;
int addr_valid = 0;
// value to be written
uint32_t value = 0;
int value_valid = 0;
// number of bytes to be written or read
int len = 4;
// used device-tree to get address
const char *dtree = DTREE_PATH;
// name of the device to access
const char *dev = NULL;
// input for -w when -d is missing
FILE *finput = stdin;
int opt;
opterr = 0;
while((opt = getopt(argc, argv, GETOPT_STR)) != -1) {
switch(opt) {
case 'h':
return print_help(argv[0]);
case 'V':
return print_version(argv[0]);
case 'v':
verbosity += 1;
break;
case 'l':
act = opt;
break;
case 'r':
case 'w':
dev = optarg;
act = opt;
break;
case 't':
dtree = optarg;
break;
case 'a':
addr = parse_addr(optarg);
addr_valid = 1;
break;
case 'd':
value = parse_value(optarg);
value_valid = 1;
break;
case '1':
case '2':
case '3':
case '4':
len = opt - '0';
break;
case '?':
default:
return print_opterr(optopt);
}
}
verbosity_printf(1, "Attempt to open device-tree '%s'", dtree);
if(dtree_open(dtree) != 0) {
fprintf(stderr, "dtree_open(%s): %s\n", dtree, dtree_errstr());
return 1;
}
int err = 0;
switch(act) {
case 'l':
err = perform_list();
goto exit;
case 'r':
assert(dev != NULL);
if(addr_valid) {
err = perform_read(dev, addr, len);
goto exit;
}
break;
case 'w':
assert(dev != NULL);
if(!addr_valid)
break;
if(value_valid) {
err = perform_write(dev, addr, len, value);
goto exit;
}
else {
verbosity_printf(1, "Reading from <stdin>");
err = perform_file_write(dev, addr, len, finput);
goto exit;
}
break;
case '\0':
fprintf(stderr, "No action has been specified\n");
err = 1;
goto exit;
default:
fprintf(stderr, "Unknown action to be performed: %c\n", act);
err = 1;
goto exit;
}
if(!addr_valid) {
fprintf(stderr, "Address option (-a) is missing\n");
err = 1;
goto exit;
}
if(!value_valid) {
fprintf(stderr, "Data option (-d) is missing\n");
err = 1;
goto exit;
}
fprintf(stderr, "Unknown option error\n");
err = 1;
exit:
dtree_close();
return err;
}
/* Flushes any existing output buffer and clears use back to 0. */
static void flush_output_buffer(MVMThreadContext *tc, MVMIOFileData *data) {
if (data->output_buffer_used) {
perform_write(tc, data, data->output_buffer, data->output_buffer_used);
data->output_buffer_used = 0;
}
}