* @brief constants for network protocols
* @author Siomon Dieterle
* @author Andreas Fuchs
+ * @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include <opus/opus.h>
#include <opus/opus_types.h>
+#define SAMPLING_RATE 48000
+
/**
* Specification for recording. May change in the future to spec negotiation.
*/
static pa_sample_spec sample_spec = {
.format = PA_SAMPLE_FLOAT32LE,
- .rate = 48000,
+ .rate = SAMPLING_RATE,
.channels = 1
};
*/
static pa_io_event *stdio_event;
-/**
- * Message tokenizer
- */
-static struct MessageStreamTokenizer *stdin_mst;
-
/**
* OPUS encoder
*/
static float *pcm_buffer;
/**
- * Length of the pcm data needed for one OPUS frame
+ * Length of the pcm data needed for one OPUS frame
*/
static int pcm_length;
/**
* Audio buffer
*/
-static void *transmit_buffer;
+static char *transmit_buffer;
/**
* Length of audio buffer
static void
packetizer ()
{
+ static unsigned long long toff;
+ char *nbuf;
+ size_t new_size;
+ const char *ptr;
+ size_t off;
+ ssize_t ret;
+ int len; // FIXME: int?
+ size_t msg_size;
+
while (transmit_buffer_length >= transmit_buffer_index + pcm_length)
{
- int ret;
- int len;
-
- size_t msg_size = sizeof (struct AudioMessage);
-
- memcpy (pcm_buffer,
- (float *) transmit_buffer +
- (transmit_buffer_index / sizeof (float)), pcm_length);
- len =
- opus_encode_float (enc, pcm_buffer, frame_size, opus_data,
- max_payload_bytes);
-
- audio_message->length = len;
- memcpy (audio_message->audio, opus_data, len);
-
- if ((ret = write (1, audio_message, msg_size)) != msg_size)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("write"));
- return;
- }
-
- transmit_buffer_index += pcm_length;
+ memcpy (pcm_buffer,
+ &transmit_buffer[transmit_buffer_index],
+ pcm_length);
+ transmit_buffer_index += pcm_length;
+ len =
+ opus_encode_float (enc, pcm_buffer, frame_size, opus_data,
+ max_payload_bytes);
+ if (len > UINT16_MAX - sizeof (struct AudioMessage))
+ {
+ GNUNET_break (0);
+ len = UINT16_MAX - sizeof (struct AudioMessage);
}
-
- int new_size = transmit_buffer_length - transmit_buffer_index;
-
- if (0 != new_size)
+ msg_size = sizeof (struct AudioMessage) + len;
+ audio_message->header.size = htons ((uint16_t) msg_size);
+ memcpy (&audio_message[1], opus_data, len);
+
+ toff += msg_size;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending %u bytes of audio data (total: %llu)\n",
+ (unsigned int) msg_size,
+ toff);
+ ptr = (const char *) audio_message;
+ off = 0;
+ while (off < msg_size)
{
-
- transmit_buffer = pa_xrealloc (transmit_buffer, new_size);
- memcpy (transmit_buffer, transmit_buffer + transmit_buffer_index,
- new_size);
-
- transmit_buffer_index = 0;
- transmit_buffer_length = new_size;
+ ret = write (1, &ptr[off], msg_size - off);
+ if (0 >= ret)
+ {
+ if (-1 == ret)
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "write");
+ quit (2);
+ }
+ off += ret;
}
+ }
+ new_size = transmit_buffer_length - transmit_buffer_index;
+ if (0 != new_size)
+ {
+ nbuf = pa_xmalloc (new_size);
+ memmove (nbuf,
+ &transmit_buffer[transmit_buffer_index],
+ new_size);
+ pa_xfree (transmit_buffer);
+ transmit_buffer = nbuf;
+ }
+ else
+ {
+ pa_xfree (transmit_buffer);
+ transmit_buffer = NULL;
+ }
+ transmit_buffer_index = 0;
+ transmit_buffer_length = new_size;
}
+
/**
-* Pulseaudio callback when new data is available.
-*/
+ * Pulseaudio callback when new data is available.
+ */
static void
-stream_read_callback (pa_stream * s, size_t length, void *userdata)
+stream_read_callback (pa_stream * s,
+ size_t length,
+ void *userdata)
{
const void *data;
- GNUNET_assert (s);
- GNUNET_assert (length > 0);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Got %u/%u bytes of PCM data\n",
+ length,
+ pcm_length);
+
+ GNUNET_assert (NULL != s);
+ GNUNET_assert (length > 0);
if (stdio_event)
mainloop_api->io_enable (stdio_event, PA_IO_EVENT_OUTPUT);
if (pa_stream_peek (s, (const void **) &data, &length) < 0)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("pa_stream_peek() failed: %s\n"),
- pa_strerror (pa_context_errno (context)));
- quit (1);
- return;
- }
-
- GNUNET_assert (data);
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_stream_peek() failed: %s\n"),
+ pa_strerror (pa_context_errno (context)));
+ quit (1);
+ return;
+ }
+ GNUNET_assert (NULL != data);
GNUNET_assert (length > 0);
-
- if (transmit_buffer)
- {
- transmit_buffer =
- pa_xrealloc (transmit_buffer, transmit_buffer_length + length);
- memcpy ((uint8_t *) transmit_buffer + transmit_buffer_length, data,
- length);
- transmit_buffer_length += length;
- }
+ if (NULL != transmit_buffer)
+ {
+ transmit_buffer = pa_xrealloc (transmit_buffer,
+ transmit_buffer_length + length);
+ memcpy (&transmit_buffer[transmit_buffer_length],
+ data,
+ length);
+ transmit_buffer_length += length;
+ }
else
- {
- transmit_buffer = pa_xmalloc (length);
- memcpy (transmit_buffer, data, length);
- transmit_buffer_length = length;
- transmit_buffer_index = 0;
- }
-
+ {
+ transmit_buffer = pa_xmalloc (length);
+ memcpy (transmit_buffer, data, length);
+ transmit_buffer_length = length;
+ transmit_buffer_index = 0;
+ }
pa_stream_drop (s);
packetizer ();
}
+
/**
-* Exit callback for SIGTERM and SIGINT
-*/
+ * Exit callback for SIGTERM and SIGINT
+ */
static void
-exit_signal_callback (pa_mainloop_api * m, pa_signal_event * e, int sig,
+exit_signal_callback (pa_mainloop_api * m,
+ pa_signal_event * e,
+ int sig,
void *userdata)
{
- GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Got signal, exiting.\n"));
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Got signal, exiting.\n"));
quit (1);
}
+
/**
-* Pulseaudio stream state callback
-*/
+ * Pulseaudio stream state callback
+ */
static void
stream_state_callback (pa_stream * s, void *userdata)
{
- GNUNET_assert (s);
+ GNUNET_assert (NULL != s);
switch (pa_stream_get_state (s))
+ {
+ case PA_STREAM_CREATING:
+ case PA_STREAM_TERMINATED:
+ break;
+ case PA_STREAM_READY:
{
- case PA_STREAM_CREATING:
- case PA_STREAM_TERMINATED:
- break;
-
- case PA_STREAM_READY:
- if (1)
- {
- const pa_buffer_attr *a;
- char cmt[PA_CHANNEL_MAP_SNPRINT_MAX],
- sst[PA_SAMPLE_SPEC_SNPRINT_MAX];
-
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Stream successfully created.\n"));
-
- if (!(a = pa_stream_get_buffer_attr (s)))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("pa_stream_get_buffer_attr() failed: %s\n"),
- pa_strerror (pa_context_errno
- (pa_stream_get_context (s))));
-
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Buffer metrics: maxlength=%u, fragsize=%u\n"),
- a->maxlength, a->fragsize);
- }
-
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Using sample spec '%s', channel map '%s'.\n"),
- pa_sample_spec_snprint (sst, sizeof (sst),
- pa_stream_get_sample_spec (s)),
- pa_channel_map_snprint (cmt, sizeof (cmt),
- pa_stream_get_channel_map (s)));
-
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Connected to device %s (%u, %ssuspended).\n"),
- pa_stream_get_device_name (s),
- pa_stream_get_device_index (s),
- pa_stream_is_suspended (s) ? "" : "not ");
- }
-
- break;
-
- case PA_STREAM_FAILED:
- default:
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Stream error: %s\n"),
- pa_strerror (pa_context_errno (pa_stream_get_context (s))));
- quit (1);
+ const pa_buffer_attr *a;
+
+ char cmt[PA_CHANNEL_MAP_SNPRINT_MAX],
+ sst[PA_SAMPLE_SPEC_SNPRINT_MAX];
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Stream successfully created.\n"));
+
+ if (!(a = pa_stream_get_buffer_attr (s)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_stream_get_buffer_attr() failed: %s\n"),
+ pa_strerror (pa_context_errno
+ (pa_stream_get_context (s))));
+
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Buffer metrics: maxlength=%u, fragsize=%u\n"),
+ a->maxlength, a->fragsize);
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Using sample spec '%s', channel map '%s'.\n"),
+ pa_sample_spec_snprint (sst, sizeof (sst),
+ pa_stream_get_sample_spec (s)),
+ pa_channel_map_snprint (cmt, sizeof (cmt),
+ pa_stream_get_channel_map (s)));
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Connected to device %s (%u, %ssuspended).\n"),
+ pa_stream_get_device_name (s),
+ pa_stream_get_device_index (s),
+ pa_stream_is_suspended (s) ? "" : "not ");
}
+ break;
+ case PA_STREAM_FAILED:
+ default:
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Stream error: %s\n"),
+ pa_strerror (pa_context_errno (pa_stream_get_context (s))));
+ quit (1);
+ }
}
+
/**
-* Pulseaudio context state callback
-*/
+ * Pulseaudio context state callback
+ */
static void
-context_state_callback (pa_context * c, void *userdata)
+context_state_callback (pa_context * c,
+ void *userdata)
{
GNUNET_assert (c);
switch (pa_context_get_state (c))
+ {
+ case PA_CONTEXT_CONNECTING:
+ case PA_CONTEXT_AUTHORIZING:
+ case PA_CONTEXT_SETTING_NAME:
+ break;
+ case PA_CONTEXT_READY:
+ {
+ int r;
+ pa_buffer_attr na;
+
+ GNUNET_assert (!stream_in);
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Connection established.\n"));
+ if (! (stream_in =
+ pa_stream_new (c, "GNUNET_VoIP recorder", &sample_spec, NULL)))
{
- case PA_CONTEXT_CONNECTING:
- case PA_CONTEXT_AUTHORIZING:
- case PA_CONTEXT_SETTING_NAME:
- break;
-
- case PA_CONTEXT_READY:
- {
- int r;
-
- GNUNET_assert (c);
- GNUNET_assert (!stream_in);
-
- GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Connection established.\n"));
-
- if (!
- (stream_in =
- pa_stream_new (c, "GNUNET_VoIP recorder", &sample_spec, NULL)))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("pa_stream_new() failed: %s\n"),
- pa_strerror (pa_context_errno (c)));
- goto fail;
- }
-
-
- pa_stream_set_state_callback (stream_in, stream_state_callback, NULL);
- pa_stream_set_read_callback (stream_in, stream_read_callback, NULL);
-
-
- if ((r = pa_stream_connect_record (stream_in, NULL, NULL, 0)) < 0)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("pa_stream_connect_record() failed: %s\n"),
- pa_strerror (pa_context_errno (c)));
- goto fail;
- }
-
- break;
- }
-
- case PA_CONTEXT_TERMINATED:
- quit (0);
- break;
-
- case PA_CONTEXT_FAILED:
- default:
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Connection failure: %s\n"),
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_stream_new() failed: %s\n"),
+ pa_strerror (pa_context_errno (c)));
+ goto fail;
+ }
+ pa_stream_set_state_callback (stream_in, &stream_state_callback, NULL);
+ pa_stream_set_read_callback (stream_in, &stream_read_callback, NULL);
+ memset (&na, 0, sizeof (na));
+ na.maxlength = UINT32_MAX;
+ na.fragsize = pcm_length;
+ if ((r = pa_stream_connect_record (stream_in, NULL, &na,
+ PA_STREAM_ADJUST_LATENCY)) < 0)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_stream_connect_record() failed: %s\n"),
pa_strerror (pa_context_errno (c)));
goto fail;
}
+ break;
+ }
+ case PA_CONTEXT_TERMINATED:
+ quit (0);
+ break;
+ case PA_CONTEXT_FAILED:
+ default:
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Connection failure: %s\n"),
+ pa_strerror (pa_context_errno (c)));
+ goto fail;
+ }
return;
fail:
quit (1);
-
}
+
/**
* Pulsaudio init
*/
-void
+static void
pa_init ()
{
int r;
int i;
if (!pa_sample_spec_valid (&sample_spec))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Wrong Spec\n"));
- }
-
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Wrong Spec\n"));
+ }
/* set up main record loop */
-
if (!(m = pa_mainloop_new ()))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("pa_mainloop_new() failed.\n"));
- }
-
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_mainloop_new() failed.\n"));
+ }
mainloop_api = pa_mainloop_get_api (m);
/* listen to signals */
-
r = pa_signal_init (mainloop_api);
GNUNET_assert (r == 0);
- pa_signal_new (SIGINT, exit_signal_callback, NULL);
- pa_signal_new (SIGTERM, exit_signal_callback, NULL);
+ pa_signal_new (SIGINT, &exit_signal_callback, NULL);
+ pa_signal_new (SIGTERM, &exit_signal_callback, NULL);
/* connect to the main pulseaudio context */
if (!(context = pa_context_new (mainloop_api, "GNUNET VoIP")))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("pa_context_new() failed.\n"));
- }
-
- pa_context_set_state_callback (context, context_state_callback, NULL);
-
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_context_new() failed.\n"));
+ }
+ pa_context_set_state_callback (context, &context_state_callback, NULL);
if (pa_context_connect (context, NULL, 0, NULL) < 0)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("pa_context_connect() failed: %s\n"),
- pa_strerror (pa_context_errno (context)));
- }
-
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_context_connect() failed: %s\n"),
+ pa_strerror (pa_context_errno (context)));
+ }
if (pa_mainloop_run (m, &i) < 0)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("pa_mainloop_run() failed.\n"));
- }
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_mainloop_run() failed.\n"));
+ }
}
+
/**
* OPUS init
*/
-void
+static void
opus_init ()
{
- opus_int32 sampling_rate = 48000;
- frame_size = sampling_rate / 50;
int channels = 1;
-
- pcm_length = frame_size * channels * sizeof (float);
-
int err;
- enc =
- opus_encoder_create (sampling_rate, channels, OPUS_APPLICATION_VOIP,
- &err);
- pcm_buffer = (float *) pa_xmalloc (pcm_length);
- opus_data = (unsigned char *) calloc (max_payload_bytes, sizeof (char));
-
- audio_message = pa_xmalloc (sizeof (struct AudioMessage));
- audio_message->header.size = htons (sizeof (struct AudioMessage));
- audio_message->header.type = htons (GNUNET_MESSAGE_TYPE_CONVERSATION_AUDIO);
+ frame_size = SAMPLING_RATE / 50;
+ pcm_length = frame_size * channels * sizeof (float);
+ pcm_buffer = pa_xmalloc (pcm_length);
+ opus_data = GNUNET_malloc (max_payload_bytes);
+ enc = opus_encoder_create (SAMPLING_RATE,
+ channels,
+ OPUS_APPLICATION_VOIP,
+ &err);
+ opus_encoder_ctl (enc,
+ OPUS_SET_PACKET_LOSS_PERC(1));
+ opus_encoder_ctl (enc,
+ OPUS_SET_COMPLEXITY(10));
+ opus_encoder_ctl (enc,
+ OPUS_SET_INBAND_FEC(1));
+ opus_encoder_ctl (enc,
+ OPUS_SET_SIGNAL (OPUS_SIGNAL_VOICE));
}
int
main (int argc, char *argv[])
{
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_log_setup ("gnunet-helper-audio-record",
+ "DEBUG",
+ "/tmp/helper-audio-record"));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Audio source starts\n");
+ audio_message = GNUNET_malloc (UINT16_MAX);
+ audio_message->header.type = htons (GNUNET_MESSAGE_TYPE_CONVERSATION_AUDIO);
opus_init ();
pa_init ();
-
return 0;
}
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