-#include <gnunet/platform.h>
-#include <gnunet/gnunet_util_lib.h>
-#include "gnunet_protocols_conversation.h"
-#include <gnunet/gnunet_constants.h>
-#include <gnunet/gnunet_core_service.h>
+/*
+ This file is part of GNUnet.
+ (C) 2013 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file conversation/gnunet-helper-audio-playback.c
+ * @brief program to playback audio data to the speaker
+ * @author Siomon Dieterle
+ * @author Andreas Fuchs
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_protocols.h"
+#include "conversation.h"
+#include "gnunet_constants.h"
+#include "gnunet_core_service.h"
#include <pulse/simple.h>
#include <pulse/error.h>
#define MAXLINE 4096
-/**
-* GNUnet Message Tokenizer
-*/
-#include "mst.c"
+#define SAMPLING_RATE 48000
/**
-* Pulseaudio specification. May change in the future.
-*/
+ * Pulseaudio specification. May change in the future.
+ */
static pa_sample_spec sample_spec = {
.format = PA_SAMPLE_FLOAT32LE,
- .rate = 48000,
+ .rate = SAMPLING_RATE,
.channels = 1
};
+
/**
-* Pulseaudio mainloop api
-*/
+ * Pulseaudio mainloop api
+ */
static pa_mainloop_api *mainloop_api;
/**
-* Pulseaudio threaded mainloop
-*/
+ * Pulseaudio threaded mainloop
+ */
static pa_threaded_mainloop *m;
/**
-* Pulseaudio context
-*/
+ * Pulseaudio context
+ */
static pa_context *context;
/**
-* Pulseaudio output stream
-*/
+ * Pulseaudio output stream
+ */
static pa_stream *stream_out;
/**
-* Pulseaudio io events
-*/
-static pa_io_event *stdio_event;
-
-/**
-* OPUS decoder
-*/
+ * OPUS decoder
+ */
static OpusDecoder *dec;
/**
-* PCM data buffer
-*/
+ * PCM data buffer
+ */
static float *pcm_buffer;
/**
-* Length of PCM buffer
-*/
+ * Length of PCM buffer
+ */
static int pcm_length;
/**
-* Number of samples for one frame
-*/
+ * Number of samples for one frame
+ */
static int frame_size;
/**
-* The sampling rate used in Pulseaudio specification
-*/
-static opus_int32 sampling_rate;
-
-/**
-* Audio buffer
-*/
-static void *buffer;
-
-/**
-* Length of audio buffer
-*/
-static size_t buffer_length;
-
-/**
-* Read index for transmit buffer
-*/
-static size_t buffer_index;
-
-
+ * Pipe we use to signal the main loop that we are ready to receive.
+ */
+static int ready_pipe[2];
/**
-* Message callback
-*/
-static void
-stdin_receiver (void *cls, const struct GNUNET_MessageHeader *msg)
+ * Message callback
+ */
+static int
+stdin_receiver (void *cls,
+ void *client,
+ const struct GNUNET_MessageHeader *msg)
{
struct AudioMessage *audio;
+ int ret;
switch (ntohs (msg->type))
+ {
+ case GNUNET_MESSAGE_TYPE_CONVERSATION_AUDIO:
+ audio = (struct AudioMessage *) msg;
+
+ ret = opus_decode_float (dec,
+ (const unsigned char *) &audio[1],
+ ntohs (audio->header.size) - sizeof (struct AudioMessage),
+ pcm_buffer,
+ frame_size, 0);
+ if (ret < 0)
{
- case GNUNET_MESSAGE_TYPE_CONVERSATION_AUDIO:
- audio = (struct AudioMessage *) msg;
-
- int len =
- opus_decode_float (dec, audio->audio, audio->length, pcm_buffer,
- frame_size, 0);
-
- if (pa_stream_write
- (stream_out, (uint8_t *) pcm_buffer, pcm_length, NULL, 0,
- PA_SEEK_RELATIVE) < 0)
- {
-
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("pa_stream_write() failed: %s\n"),
- pa_strerror (pa_context_errno (context)));
- return;
- }
-
- break;
-
- default:
- break;
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Opus decoding failed: %d\n",
+ ret);
+ return GNUNET_OK;
}
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Decoded frame with %u bytes\n",
+ ntohs (audio->header.size));
+ if (pa_stream_write
+ (stream_out, pcm_buffer, pcm_length, NULL, 0,
+ PA_SEEK_RELATIVE) < 0)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_stream_write() failed: %s\n"),
+ pa_strerror (pa_context_errno (context)));
+ return GNUNET_OK;
+ }
+ break;
+ default:
+ break;
+ }
+ return GNUNET_OK;
}
+
/**
-* Pulseaudio shutdown task
-*/
+ * Pulseaudio shutdown task
+ */
static void
quit (int ret)
{
exit (ret);
}
-/**
-* Write some data to the stream
-*/
-static void
-do_stream_write (size_t length)
-{
- size_t l;
- GNUNET_assert (length);
-
- if (!buffer || !buffer_length)
- {
- return;
- }
-
-
- l = length;
- if (l > buffer_length)
- {
- l = buffer_length;
-
- }
-
- if (pa_stream_write
- (stream_out, (uint8_t *) buffer + buffer_index, l, NULL, 0,
- PA_SEEK_RELATIVE) < 0)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("pa_stream_write() failed: %s\n"),
- pa_strerror (pa_context_errno (context)));
- quit (1);
- return;
- }
-
- buffer_length -= l;
- buffer_index += l;
-
- if (!buffer_length)
- {
- pa_xfree (buffer);
- buffer = NULL;
- buffer_index = buffer_length = 0;
- }
-}
/**
-* Callback when data is there for playback
-*/
+ * Callback when data is there for playback
+ */
static void
-stream_write_callback (pa_stream * s, size_t length, void *userdata)
+stream_write_callback (pa_stream * s,
+ size_t length,
+ void *userdata)
{
-
- if (stdio_event)
- {
- mainloop_api->io_enable (stdio_event, PA_IO_EVENT_INPUT);
- }
-
-
- if (!buffer)
- {
- return;
- }
-
-
- do_stream_write (length);
+ /* unblock 'main' */
+ if (-1 != ready_pipe[1])
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Unblocking main loop!\n");
+ write (ready_pipe[1], "r", 1);
+ }
}
+
/**
-* 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,
void *userdata)
quit (1);
}
+
/**
-* Pulseaudio stream state callback
-*/
+ * Pulseaudio stream state callback
+ */
static void
-context_state_callback (pa_context * c, void *userdata)
+context_state_callback (pa_context * c,
+ void *userdata)
{
int p;
- GNUNET_assert (c);
+ GNUNET_assert (NULL != 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:
+ {
+ GNUNET_assert (!stream_out);
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Connection established.\n"));
+ if (!(stream_out =
+ pa_stream_new (c, "GNUNET VoIP playback", &sample_spec, NULL)))
{
- case PA_CONTEXT_CONNECTING:
- case PA_CONTEXT_AUTHORIZING:
- case PA_CONTEXT_SETTING_NAME:
- break;
-
- case PA_CONTEXT_READY:
- {
- GNUNET_assert (c);
- GNUNET_assert (!stream_out);
-
- GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Connection established.\n"));
-
-
- if (!
- (stream_out =
- pa_stream_new (c, "GNUNET VoIP playback", &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_write_callback (stream_out, stream_write_callback,
- NULL);
-
- if ((p =
- pa_stream_connect_playback (stream_out, NULL, NULL, 0, NULL,
- NULL)) < 0)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("pa_stream_connect_playback() 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_write_callback (stream_out,
+ &stream_write_callback,
+ NULL);
+ if ((p =
+ pa_stream_connect_playback (stream_out, NULL,
+ NULL,
+ PA_STREAM_ADJUST_LATENCY | PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE,
+ NULL, NULL)) < 0)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_stream_connect_playback() 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:
+ fail:
quit (1);
-
}
+
/**
-* Pulseaudio initialization
-*/
-void
+ * Pulseaudio initialization
+ */
+static void
pa_init ()
{
int r;
if (!pa_sample_spec_valid (&sample_spec))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Wrong Spec\n"));
- }
-
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Wrong Spec\n"));
+ }
/* set up threaded playback mainloop */
-
if (!(m = pa_threaded_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_threaded_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);
/* 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"));
- }
-
+ {
+ 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_threaded_mainloop_start (m) < 0)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("pa_mainloop_run() failed.\n"));
- }
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("pa_mainloop_run() failed.\n"));
+ }
}
+
/**
-* OPUS initialization
-*/
-void
+ * OPUS initialization
+ */
+static void
opus_init ()
{
int err;
int channels = 1;
- sampling_rate = 48000;
- frame_size = sampling_rate / 50;
+
+ frame_size = SAMPLING_RATE / 50;
pcm_length = frame_size * channels * sizeof (float);
- dec = opus_decoder_create (sampling_rate, channels, &err);
+ dec = opus_decoder_create (SAMPLING_RATE, channels, &err);
pcm_buffer = (float *) pa_xmalloc (frame_size * channels * sizeof (float));
}
+
/**
* The main function for the playback helper.
*
int
main (int argc, char *argv[])
{
- char readbuf[MAXLINE];
- struct MessageStreamTokenizer *stdin_mst;
-
- stdin_mst = mst_create (&stdin_receiver, NULL);
+ static unsigned long long toff;
+ char readbuf[MAXLINE];
+ struct GNUNET_SERVER_MessageStreamTokenizer *stdin_mst;
+ char c;
+ ssize_t ret;
+
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_log_setup ("gnunet-helper-audio-playback",
+ "WARNING",
+ NULL));
+ if (0 != pipe (ready_pipe))
+ {
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "pipe");
+ return 1;
+ }
+ stdin_mst = GNUNET_SERVER_mst_create (&stdin_receiver, NULL);
opus_init ();
pa_init ();
-
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Waiting for PulseAudio to be ready.\n");
+ GNUNET_assert (1 == read (ready_pipe[0], &c, 1));
+ close (ready_pipe[0]);
+ close (ready_pipe[1]);
+ ready_pipe[0] = -1;
+ ready_pipe[1] = -1;
while (1)
+ {
+ ret = read (0, readbuf, sizeof (readbuf));
+ toff += ret;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received %d bytes of audio data (total: %llu)\n",
+ (int) ret,
+ toff);
+ if (0 > ret)
{
- ssize_t ret = read (0, readbuf, sizeof (readbuf));
-
- if (0 > ret)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Read error from STDIN: %s\n"), strerror (errno));
- break;
- }
-
- mst_receive (stdin_mst, readbuf, ret);
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Read error from STDIN: %s\n"),
+ strerror (errno));
+ break;
}
- mst_destroy (stdin_mst);
-
+ if (0 == ret)
+ break;
+ GNUNET_SERVER_mst_receive (stdin_mst, NULL,
+ readbuf, ret,
+ GNUNET_NO, GNUNET_NO);
+ }
+ GNUNET_SERVER_mst_destroy (stdin_mst);
return 0;
}
projects / oweals / gnunet.git / blobdiff