static void __stream_read_callback(pa_stream* stream, size_t length,
void* data) {
guac_client* client = (guac_client*) data;
vnc_guac_client_data* client_data = (vnc_guac_client_data*) client->data;
guac_audio_stream* audio = client_data->audio;
const void* buffer;
/* Read data */
pa_stream_peek(stream, &buffer, &length);
/* Write data */
guac_audio_stream_write_pcm(audio, buffer, length);
/* Flush occasionally */
if (audio->pcm_bytes_written > GUAC_VNC_PCM_WRITE_RATE) {
guac_audio_stream_end(audio);
guac_audio_stream_begin(client_data->audio,
GUAC_VNC_AUDIO_RATE,
GUAC_VNC_AUDIO_CHANNELS,
GUAC_VNC_AUDIO_BPS);
}
/* Advance buffer */
pa_stream_drop(stream);
}
static void __stream_read_callback(pa_stream* stream, size_t length,
void* data) {
guac_client* client = (guac_client*) data;
vnc_guac_client_data* client_data = (vnc_guac_client_data*) client->data;
guac_audio_stream* audio = client_data->audio;
const void* buffer;
/* Read data */
pa_stream_peek(stream, &buffer, &length);
/* Avoid sending silence unless data is waiting to be flushed */
if (audio->pcm_bytes_written != 0 || !guac_pa_is_silence(buffer, length)) {
/* Write data */
guac_audio_stream_write_pcm(audio, buffer, length);
/* Flush occasionally */
if (audio->pcm_bytes_written > GUAC_VNC_PCM_WRITE_RATE) {
guac_audio_stream_end(audio);
guac_audio_stream_begin(client_data->audio,
GUAC_VNC_AUDIO_RATE,
GUAC_VNC_AUDIO_CHANNELS,
GUAC_VNC_AUDIO_BPS);
guac_socket_flush(client->socket);
}
}
/* Advance buffer */
pa_stream_drop(stream);
}
void guac_rdpsnd_wave_handler(guac_rdpsndPlugin* rdpsnd,
wStream* input_stream, guac_rdpsnd_pdu_header* header) {
rdpSvcPlugin* plugin = (rdpSvcPlugin*)rdpsnd;
/* Get associated client data */
guac_client* client = rdpsnd->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
/* Get audio stream from client data */
guac_audio_stream* audio = rdp_client->audio;
/* Wave Confirmation PDU */
wStream* output_stream = Stream_New(NULL, 8);
/* Get wave data */
unsigned char* buffer = Stream_Buffer(input_stream);
/* Copy over first four bytes */
memcpy(buffer, rdpsnd->initial_wave_data, 4);
/* Write rest of audio packet */
if (audio != NULL) {
guac_audio_stream_write_pcm(audio, buffer,
rdpsnd->incoming_wave_size + 4);
guac_audio_stream_flush(audio);
}
/* Write Wave Confirmation PDU */
Stream_Write_UINT8(output_stream, SNDC_WAVECONFIRM);
Stream_Write_UINT8(output_stream, 0);
Stream_Write_UINT16(output_stream, 4);
Stream_Write_UINT16(output_stream, rdpsnd->server_timestamp);
Stream_Write_UINT8(output_stream, rdpsnd->waveinfo_block_number);
Stream_Write_UINT8(output_stream, 0);
/* Send Wave Confirmation PDU */
pthread_mutex_lock(&(rdp_client->rdp_lock));
svc_plugin_send(plugin, output_stream);
pthread_mutex_unlock(&(rdp_client->rdp_lock));
/* We no longer expect to receive wave data */
rdpsnd->next_pdu_is_wave = FALSE;
}
