/* GStreamer * Copyright (C) 2006 Wim Taymans * * gstjackaudiosink.c: jack audio sink implementation * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /** * SECTION:element-jackaudiosink * @title: jackaudiosink * @see_also: #GstAudioBaseSink, #GstAudioRingBuffer * * A Sink that outputs data to Jack ports. * * It will create N Jack ports named out_<name>_<num> where * <name> is the element name and <num> is starting from 1. * Each port corresponds to a gstreamer channel. * * The samplerate as exposed on the caps is always the same as the samplerate of * the jack server. * * When the #GstJackAudioSink:connect property is set to auto, this element * will try to connect each output port to a random physical jack input pin. In * this mode, the sink will expose the number of physical channels on its pad * caps. * * When the #GstJackAudioSink:connect property is set to none, the element will * accept any number of input channels and will create (but not connect) an * output port for each channel. * * The element will generate an error when the Jack server is shut down when it * was PAUSED or PLAYING. This element does not support dynamic rate and buffer * size changes at runtime. * * ## Example launch line * |[ * gst-launch-1.0 audiotestsrc ! jackaudiosink * ]| Play a sine wave to using jack. * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include "gstjackaudiosink.h" #include "gstjackringbuffer.h" GST_DEBUG_CATEGORY_STATIC (gst_jack_audio_sink_debug); #define GST_CAT_DEFAULT gst_jack_audio_sink_debug static gboolean gst_jack_audio_sink_allocate_channels (GstJackAudioSink * sink, gint channels) { jack_client_t *client; client = gst_jack_audio_client_get_client (sink->client); /* remove ports we don't need */ while (sink->port_count > channels) { jack_port_unregister (client, sink->ports[--sink->port_count]); } /* alloc enough output ports */ sink->ports = g_realloc (sink->ports, sizeof (jack_port_t *) * channels); sink->buffers = g_realloc (sink->buffers, sizeof (sample_t *) * channels); /* create an output port for each channel */ while (sink->port_count < channels) { gchar *name; /* port names start from 1 and are local to the element */ name = g_strdup_printf ("out_%s_%d", GST_ELEMENT_NAME (sink), sink->port_count + 1); sink->ports[sink->port_count] = jack_port_register (client, name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0); if (sink->ports[sink->port_count] == NULL) return FALSE; sink->port_count++; g_free (name); } return TRUE; } static void gst_jack_audio_sink_free_channels (GstJackAudioSink * sink) { gint res, i = 0; jack_client_t *client; client = gst_jack_audio_client_get_client (sink->client); /* get rid of all ports */ while (sink->port_count) { GST_LOG_OBJECT (sink, "unregister port %d", i); if ((res = jack_port_unregister (client, sink->ports[i++]))) { GST_DEBUG_OBJECT (sink, "unregister of port failed (%d)", res); } sink->port_count--; } g_free (sink->ports); sink->ports = NULL; g_free (sink->buffers); sink->buffers = NULL; } /* ringbuffer abstract base class */ static GType gst_jack_ring_buffer_get_type (void) { static volatile gsize ringbuffer_type = 0; if (g_once_init_enter (&ringbuffer_type)) { static const GTypeInfo ringbuffer_info = { sizeof (GstJackRingBufferClass), NULL, NULL, (GClassInitFunc) gst_jack_ring_buffer_class_init, NULL, NULL, sizeof (GstJackRingBuffer), 0, (GInstanceInitFunc) gst_jack_ring_buffer_init, NULL }; GType tmp = g_type_register_static (GST_TYPE_AUDIO_RING_BUFFER, "GstJackAudioSinkRingBuffer", &ringbuffer_info, 0); g_once_init_leave (&ringbuffer_type, tmp); } return (GType) ringbuffer_type; } static void gst_jack_ring_buffer_class_init (GstJackRingBufferClass * klass) { GstAudioRingBufferClass *gstringbuffer_class; gstringbuffer_class = (GstAudioRingBufferClass *) klass; ring_parent_class = g_type_class_peek_parent (klass); gstringbuffer_class->open_device = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_open_device); gstringbuffer_class->close_device = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_close_device); gstringbuffer_class->acquire = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_acquire); gstringbuffer_class->release = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_release); gstringbuffer_class->start = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_start); gstringbuffer_class->pause = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_pause); gstringbuffer_class->resume = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_start); gstringbuffer_class->stop = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_stop); gstringbuffer_class->delay = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_delay); gst_type_mark_as_plugin_api (GST_TYPE_JACK_CONNECT, 0); gst_type_mark_as_plugin_api (GST_TYPE_JACK_TRANSPORT, 0); } /* this is the callback of jack. This should RT-safe. */ static int jack_process_cb (jack_nframes_t nframes, void *arg) { GstJackAudioSink *sink; GstAudioRingBuffer *buf; gint readseg, len; guint8 *readptr; gint i, j, flen, channels; sample_t *data; buf = GST_AUDIO_RING_BUFFER_CAST (arg); sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); channels = GST_AUDIO_INFO_CHANNELS (&buf->spec.info); /* get target buffers */ for (i = 0; i < channels; i++) { sink->buffers[i] = (sample_t *) jack_port_get_buffer (sink->ports[i], nframes); } if (gst_audio_ring_buffer_prepare_read (buf, &readseg, &readptr, &len)) { flen = len / channels; /* the number of samples must be exactly the segment size */ if (nframes * sizeof (sample_t) != flen) goto wrong_size; GST_DEBUG_OBJECT (sink, "copy %d frames: %p, %d bytes, %d channels", nframes, readptr, flen, channels); data = (sample_t *) readptr; /* the samples in the ringbuffer have the channels interleaved, we need to * deinterleave into the jack target buffers */ for (i = 0; i < nframes; i++) { for (j = 0; j < channels; j++) { sink->buffers[j][i] = *data++; } } /* clear written samples in the ringbuffer */ gst_audio_ring_buffer_clear (buf, readseg); /* we wrote one segment */ gst_audio_ring_buffer_advance (buf, 1); } else { GST_DEBUG_OBJECT (sink, "write %d frames silence", nframes); /* We are not allowed to read from the ringbuffer, write silence to all * jack output buffers */ for (i = 0; i < channels; i++) { memset (sink->buffers[i], 0, nframes * sizeof (sample_t)); } } return 0; /* ERRORS */ wrong_size: { GST_ERROR_OBJECT (sink, "nbytes (%d) != flen (%d)", (gint) (nframes * sizeof (sample_t)), flen); return 1; } } /* we error out */ static int jack_sample_rate_cb (jack_nframes_t nframes, void *arg) { GstJackAudioSink *sink; GstJackRingBuffer *abuf; abuf = GST_JACK_RING_BUFFER_CAST (arg); sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (arg)); if (abuf->sample_rate != -1 && abuf->sample_rate != nframes) goto not_supported; return 0; /* ERRORS */ not_supported: { GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL), ("Jack changed the sample rate, which is not supported")); return 1; } } /* we error out */ static int jack_buffer_size_cb (jack_nframes_t nframes, void *arg) { GstJackAudioSink *sink; GstJackRingBuffer *abuf; abuf = GST_JACK_RING_BUFFER_CAST (arg); sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (arg)); if (abuf->buffer_size != -1 && abuf->buffer_size != nframes) goto not_supported; return 0; /* ERRORS */ not_supported: { GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL), ("Jack changed the buffer size, which is not supported")); return 1; } } static void jack_shutdown_cb (void *arg) { GstJackAudioSink *sink; sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (arg)); GST_DEBUG_OBJECT (sink, "shutdown"); GST_ELEMENT_ERROR (sink, RESOURCE, NOT_FOUND, (NULL), ("Jack server shutdown")); } static void gst_jack_ring_buffer_init (GstJackRingBuffer * buf, GstJackRingBufferClass * g_class) { buf->channels = -1; buf->buffer_size = -1; buf->sample_rate = -1; } /* the _open_device method should make a connection with the server */ static gboolean gst_jack_ring_buffer_open_device (GstAudioRingBuffer * buf) { GstJackAudioSink *sink; jack_status_t status = 0; const gchar *name; sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); GST_DEBUG_OBJECT (sink, "open"); if (sink->client_name) { name = sink->client_name; } else { name = g_get_application_name (); } if (!name) name = "GStreamer"; sink->client = gst_jack_audio_client_new (name, sink->server, sink->jclient, GST_JACK_CLIENT_SINK, jack_shutdown_cb, jack_process_cb, jack_buffer_size_cb, jack_sample_rate_cb, buf, &status); if (sink->client == NULL) goto could_not_open; GST_DEBUG_OBJECT (sink, "opened"); return TRUE; /* ERRORS */ could_not_open: { if (status & JackServerFailed) { GST_ELEMENT_ERROR (sink, RESOURCE, NOT_FOUND, (_("Jack server not found")), ("Cannot connect to the Jack server (status %d)", status)); } else { GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL), ("Jack client open error (status %d)", status)); } return FALSE; } } /* close the connection with the server */ static gboolean gst_jack_ring_buffer_close_device (GstAudioRingBuffer * buf) { GstJackAudioSink *sink; sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); GST_DEBUG_OBJECT (sink, "close"); gst_jack_audio_sink_free_channels (sink); gst_jack_audio_client_free (sink->client); sink->client = NULL; return TRUE; } /* allocate a buffer and setup resources to process the audio samples of * the format as specified in @spec. * * We allocate N jack ports, one for each channel. If we are asked to * automatically make a connection with physical ports, we connect as many * ports as there are physical ports, leaving leftover ports unconnected. * * It is assumed that samplerate and number of channels are acceptable since our * getcaps method will always provide correct values. If unacceptable caps are * received for some reason, we fail here. */ static gboolean gst_jack_ring_buffer_acquire (GstAudioRingBuffer * buf, GstAudioRingBufferSpec * spec) { GstJackAudioSink *sink; GstJackRingBuffer *abuf; const char **ports; gint sample_rate, buffer_size; gint i, rate, bpf, channels, res; jack_client_t *client; sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); abuf = GST_JACK_RING_BUFFER_CAST (buf); GST_DEBUG_OBJECT (sink, "acquire"); client = gst_jack_audio_client_get_client (sink->client); rate = GST_AUDIO_INFO_RATE (&spec->info); /* sample rate must be that of the server */ sample_rate = jack_get_sample_rate (client); if (sample_rate != rate) goto wrong_samplerate; channels = GST_AUDIO_INFO_CHANNELS (&spec->info); bpf = GST_AUDIO_INFO_BPF (&spec->info); if (!gst_jack_audio_sink_allocate_channels (sink, channels)) goto out_of_ports; buffer_size = jack_get_buffer_size (client); /* the segment size in bytes, this is large enough to hold a buffer of 32bit floats * for all channels */ spec->segsize = buffer_size * sizeof (gfloat) * channels; spec->latency_time = gst_util_uint64_scale (spec->segsize, (GST_SECOND / GST_USECOND), rate * bpf); /* segtotal based on buffer-time latency */ spec->segtotal = spec->buffer_time / spec->latency_time; if (spec->segtotal < 2) { spec->segtotal = 2; spec->buffer_time = spec->latency_time * spec->segtotal; } GST_DEBUG_OBJECT (sink, "buffer time: %" G_GINT64_FORMAT " usec", spec->buffer_time); GST_DEBUG_OBJECT (sink, "latency time: %" G_GINT64_FORMAT " usec", spec->latency_time); GST_DEBUG_OBJECT (sink, "buffer_size %d, segsize %d, segtotal %d", buffer_size, spec->segsize, spec->segtotal); /* allocate the ringbuffer memory now */ buf->size = spec->segtotal * spec->segsize; buf->memory = g_malloc0 (buf->size); if ((res = gst_jack_audio_client_set_active (sink->client, TRUE))) goto could_not_activate; /* if we need to automatically connect the ports, do so now. We must do this * after activating the client. */ if (sink->connect == GST_JACK_CONNECT_AUTO || sink->connect == GST_JACK_CONNECT_AUTO_FORCED) { /* find all the physical input ports. A physical input port is a port * associated with a hardware device. Someone needs connect to a physical * port in order to hear something. */ if (sink->port_pattern == NULL) { ports = jack_get_ports (client, NULL, NULL, JackPortIsPhysical | JackPortIsInput); } else { ports = jack_get_ports (client, sink->port_pattern, NULL, JackPortIsInput); } if (ports == NULL) { /* no ports? fine then we don't do anything except for posting a warning * message. */ GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL), ("No physical input ports found, leaving ports unconnected")); goto done; } for (i = 0; i < channels; i++) { /* stop when all input ports are exhausted */ if (ports[i] == NULL) { /* post a warning that we could not connect all ports */ GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL), ("No more physical ports, leaving some ports unconnected")); break; } GST_DEBUG_OBJECT (sink, "try connecting to %s", jack_port_name (sink->ports[i])); /* connect the port to a physical port */ res = jack_connect (client, jack_port_name (sink->ports[i]), ports[i]); if (res != 0 && res != EEXIST) goto cannot_connect; } jack_free (ports); } done: abuf->sample_rate = sample_rate; abuf->buffer_size = buffer_size; abuf->channels = channels; return TRUE; /* ERRORS */ wrong_samplerate: { GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL), ("Wrong samplerate, server is running at %d and we received %d", sample_rate, rate)); return FALSE; } out_of_ports: { GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL), ("Cannot allocate more Jack ports")); return FALSE; } could_not_activate: { GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL), ("Could not activate client (%d:%s)", res, g_strerror (res))); return FALSE; } cannot_connect: { GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL), ("Could not connect output ports to physical ports (%d:%s)", res, g_strerror (res))); jack_free (ports); return FALSE; } } /* function is called with LOCK */ static gboolean gst_jack_ring_buffer_release (GstAudioRingBuffer * buf) { GstJackAudioSink *sink; GstJackRingBuffer *abuf; gint res; abuf = GST_JACK_RING_BUFFER_CAST (buf); sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); GST_DEBUG_OBJECT (sink, "release"); if ((res = gst_jack_audio_client_set_active (sink->client, FALSE))) { /* we only warn, this means the server is probably shut down and the client * is gone anyway. */ GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL), ("Could not deactivate Jack client (%d)", res)); } abuf->channels = -1; abuf->buffer_size = -1; abuf->sample_rate = -1; /* free the buffer */ g_free (buf->memory); buf->memory = NULL; return TRUE; } static gboolean gst_jack_ring_buffer_start (GstAudioRingBuffer * buf) { GstJackAudioSink *sink; sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); GST_DEBUG_OBJECT (sink, "start"); if (sink->transport & GST_JACK_TRANSPORT_MASTER) { jack_client_t *client; client = gst_jack_audio_client_get_client (sink->client); jack_transport_start (client); } return TRUE; } static gboolean gst_jack_ring_buffer_pause (GstAudioRingBuffer * buf) { GstJackAudioSink *sink; sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); GST_DEBUG_OBJECT (sink, "pause"); if (sink->transport & GST_JACK_TRANSPORT_MASTER) { jack_client_t *client; client = gst_jack_audio_client_get_client (sink->client); jack_transport_stop (client); } return TRUE; } static gboolean gst_jack_ring_buffer_stop (GstAudioRingBuffer * buf) { GstJackAudioSink *sink; sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); GST_DEBUG_OBJECT (sink, "stop"); if (sink->transport & GST_JACK_TRANSPORT_MASTER) { jack_client_t *client; client = gst_jack_audio_client_get_client (sink->client); jack_transport_stop (client); } return TRUE; } #if defined (HAVE_JACK_0_120_1) || defined(HAVE_JACK_1_9_7) static guint gst_jack_ring_buffer_delay (GstAudioRingBuffer * buf) { GstJackAudioSink *sink; guint i, res = 0; jack_latency_range_t range; sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); for (i = 0; i < sink->port_count; i++) { jack_port_get_latency_range (sink->ports[i], JackPlaybackLatency, &range); if (range.max > res) res = range.max; } GST_LOG_OBJECT (sink, "delay %u", res); return res; } #else /* !(defined (HAVE_JACK_0_120_1) || defined(HAVE_JACK_1_9_7)) */ static guint gst_jack_ring_buffer_delay (GstAudioRingBuffer * buf) { GstJackAudioSink *sink; guint i, res = 0; guint latency; jack_client_t *client; sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf)); client = gst_jack_audio_client_get_client (sink->client); for (i = 0; i < sink->port_count; i++) { latency = jack_port_get_total_latency (client, sink->ports[i]); if (latency > res) res = latency; } GST_LOG_OBJECT (sink, "delay %u", res); return res; } #endif static GstStaticPadTemplate jackaudiosink_sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("audio/x-raw, " "format = (string) " GST_JACK_FORMAT_STR ", " "layout = (string) interleaved, " "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, MAX ]") ); /* AudioSink signals and args */ enum { /* FILL ME */ SIGNAL_LAST }; #define DEFAULT_PROP_CONNECT GST_JACK_CONNECT_AUTO #define DEFAULT_PROP_SERVER NULL #define DEFAULT_PROP_CLIENT_NAME NULL #define DEFAULT_PROP_PORT_PATTERN NULL #define DEFAULT_PROP_TRANSPORT GST_JACK_TRANSPORT_AUTONOMOUS enum { PROP_0, PROP_CONNECT, PROP_SERVER, PROP_CLIENT, PROP_CLIENT_NAME, PROP_PORT_PATTERN, PROP_TRANSPORT, PROP_LAST }; #define gst_jack_audio_sink_parent_class parent_class G_DEFINE_TYPE (GstJackAudioSink, gst_jack_audio_sink, GST_TYPE_AUDIO_BASE_SINK); static void gst_jack_audio_sink_dispose (GObject * object); static void gst_jack_audio_sink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_jack_audio_sink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstCaps *gst_jack_audio_sink_getcaps (GstBaseSink * bsink, GstCaps * filter); static GstAudioRingBuffer * gst_jack_audio_sink_create_ringbuffer (GstAudioBaseSink * sink); static void gst_jack_audio_sink_class_init (GstJackAudioSinkClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GstBaseSinkClass *gstbasesink_class; GstAudioBaseSinkClass *gstaudiobasesink_class; GST_DEBUG_CATEGORY_INIT (gst_jack_audio_sink_debug, "jacksink", 0, "jacksink element"); gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gstbasesink_class = (GstBaseSinkClass *) klass; gstaudiobasesink_class = (GstAudioBaseSinkClass *) klass; gobject_class->dispose = gst_jack_audio_sink_dispose; gobject_class->get_property = gst_jack_audio_sink_get_property; gobject_class->set_property = gst_jack_audio_sink_set_property; g_object_class_install_property (gobject_class, PROP_CONNECT, g_param_spec_enum ("connect", "Connect", "Specify how the output ports will be connected", GST_TYPE_JACK_CONNECT, DEFAULT_PROP_CONNECT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_SERVER, g_param_spec_string ("server", "Server", "The Jack server to connect to (NULL = default)", DEFAULT_PROP_SERVER, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); /** * GstJackAudioSink:client-name: * * The client name to use. */ g_object_class_install_property (gobject_class, PROP_CLIENT_NAME, g_param_spec_string ("client-name", "Client name", "The client name of the Jack instance (NULL = default)", DEFAULT_PROP_CLIENT_NAME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_CLIENT, g_param_spec_boxed ("client", "JackClient", "Handle for jack client", GST_TYPE_JACK_CLIENT, GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); /** * GstJackAudioSink:port-pattern * * autoconnect to ports matching pattern, when NULL connect to physical ports * * Since: 1.6 */ g_object_class_install_property (gobject_class, PROP_PORT_PATTERN, g_param_spec_string ("port-pattern", "port pattern", "A pattern to select which ports to connect to (NULL = first physical ports)", DEFAULT_PROP_PORT_PATTERN, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); /** * GstJackAudioSink:transport: * * The jack transport behaviour for the client. */ g_object_class_install_property (gobject_class, PROP_TRANSPORT, g_param_spec_flags ("transport", "Transport mode", "Jack transport behaviour of the client", GST_TYPE_JACK_TRANSPORT, DEFAULT_PROP_TRANSPORT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_set_static_metadata (gstelement_class, "Audio Sink (Jack)", "Sink/Audio", "Output audio to a JACK server", "Wim Taymans "); gst_element_class_add_static_pad_template (gstelement_class, &jackaudiosink_sink_factory); gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_jack_audio_sink_getcaps); gstaudiobasesink_class->create_ringbuffer = GST_DEBUG_FUNCPTR (gst_jack_audio_sink_create_ringbuffer); /* ref class from a thread-safe context to work around missing bit of * thread-safety in GObject */ g_type_class_ref (GST_TYPE_JACK_RING_BUFFER); gst_jack_audio_client_init (); } static void gst_jack_audio_sink_init (GstJackAudioSink * sink) { sink->connect = DEFAULT_PROP_CONNECT; sink->server = g_strdup (DEFAULT_PROP_SERVER); sink->jclient = NULL; sink->ports = NULL; sink->port_count = 0; sink->buffers = NULL; sink->client_name = g_strdup (DEFAULT_PROP_CLIENT_NAME); sink->transport = DEFAULT_PROP_TRANSPORT; } static void gst_jack_audio_sink_dispose (GObject * object) { GstJackAudioSink *sink = GST_JACK_AUDIO_SINK (object); gst_caps_replace (&sink->caps, NULL); if (sink->client_name != NULL) { g_free (sink->client_name); sink->client_name = NULL; } if (sink->port_pattern != NULL) { g_free (sink->port_pattern); sink->port_pattern = NULL; } G_OBJECT_CLASS (parent_class)->dispose (object); } static void gst_jack_audio_sink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstJackAudioSink *sink; sink = GST_JACK_AUDIO_SINK (object); switch (prop_id) { case PROP_CLIENT_NAME: g_free (sink->client_name); sink->client_name = g_value_dup_string (value); break; case PROP_PORT_PATTERN: g_free (sink->port_pattern); sink->port_pattern = g_value_dup_string (value); break; case PROP_CONNECT: sink->connect = g_value_get_enum (value); break; case PROP_SERVER: g_free (sink->server); sink->server = g_value_dup_string (value); break; case PROP_CLIENT: if (GST_STATE (sink) == GST_STATE_NULL || GST_STATE (sink) == GST_STATE_READY) { sink->jclient = g_value_get_boxed (value); } break; case PROP_TRANSPORT: sink->transport = g_value_get_flags (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_jack_audio_sink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstJackAudioSink *sink; sink = GST_JACK_AUDIO_SINK (object); switch (prop_id) { case PROP_CLIENT_NAME: g_value_set_string (value, sink->client_name); break; case PROP_PORT_PATTERN: g_value_set_string (value, sink->port_pattern); break; case PROP_CONNECT: g_value_set_enum (value, sink->connect); break; case PROP_SERVER: g_value_set_string (value, sink->server); break; case PROP_CLIENT: g_value_set_boxed (value, sink->jclient); break; case PROP_TRANSPORT: g_value_set_flags (value, sink->transport); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstCaps * gst_jack_audio_sink_getcaps (GstBaseSink * bsink, GstCaps * filter) { GstJackAudioSink *sink = GST_JACK_AUDIO_SINK (bsink); const char **ports; gint min, max; gint rate; jack_client_t *client; if (sink->client == NULL) goto no_client; client = gst_jack_audio_client_get_client (sink->client); if (sink->connect == GST_JACK_CONNECT_AUTO) { /* get a port count, this is the number of channels we can automatically * connect. */ ports = jack_get_ports (client, NULL, NULL, JackPortIsPhysical | JackPortIsInput); max = 0; if (ports != NULL) { for (; ports[max]; max++); jack_free (ports); } else max = 0; } else { /* we allow any number of pads, something else is going to connect the * pads. */ max = G_MAXINT; } min = MIN (1, max); rate = jack_get_sample_rate (client); GST_DEBUG_OBJECT (sink, "got %d-%d ports, samplerate: %d", min, max, rate); if (!sink->caps) { sink->caps = gst_caps_new_simple ("audio/x-raw", "format", G_TYPE_STRING, GST_JACK_FORMAT_STR, "layout", G_TYPE_STRING, "interleaved", "rate", G_TYPE_INT, rate, "channels", GST_TYPE_INT_RANGE, min, max, NULL); } GST_INFO_OBJECT (sink, "returning caps %" GST_PTR_FORMAT, sink->caps); return gst_caps_ref (sink->caps); /* ERRORS */ no_client: { GST_DEBUG_OBJECT (sink, "device not open, using template caps"); /* base class will get template caps for us when we return NULL */ return NULL; } } static GstAudioRingBuffer * gst_jack_audio_sink_create_ringbuffer (GstAudioBaseSink * sink) { GstAudioRingBuffer *buffer; buffer = g_object_new (GST_TYPE_JACK_RING_BUFFER, NULL); GST_DEBUG_OBJECT (sink, "created ringbuffer @%p", buffer); return buffer; }