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pulsesrc: Implement GstStreamVolume interface
PulseAudio 1.0 supports per-source-output volumes, and this exposes the functionality via the GstStreamVolume interface. When compiled against pre-1.0 PulseAudio, the interface is not implemented, and the "volume" or "mute" properties are not available. This bit of ugliness will go away when we can depend on PulseAudio 1.0 or greater. https://bugzilla.gnome.org/show_bug.cgi?id=595055
This commit is contained in:
Arun Raghavan
parent
8c6a548698
commit
1f4bb68794
2 changed files with 422 additions and 3 deletions
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@ -43,6 +43,9 @@
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#include <gst/base/gstbasesrc.h>
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#include <gst/gsttaglist.h>
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#ifdef HAVE_PULSE_1_0
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#include <gst/interfaces/streamvolume.h>
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#endif
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#include "pulsesrc.h"
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#include "pulseutil.h"
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@ -55,6 +58,12 @@ GST_DEBUG_CATEGORY_EXTERN (pulse_debug);
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#define DEFAULT_DEVICE NULL
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#define DEFAULT_DEVICE_NAME NULL
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#ifdef HAVE_PULSE_1_0
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#define DEFAULT_VOLUME 1.0
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#define DEFAULT_MUTE FALSE
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#define MAX_VOLUME 10.0
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#endif
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enum
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{
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PROP_0,
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@ -64,6 +73,10 @@ enum
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PROP_CLIENT,
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PROP_STREAM_PROPERTIES,
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PROP_SOURCE_OUTPUT_INDEX,
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#ifdef HAVE_PULSE_1_0
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PROP_VOLUME,
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PROP_MUTE,
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#endif
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PROP_LAST
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};
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@ -121,6 +134,11 @@ gst_pulsesrc_interface_supported (GstImplementsInterface *
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if (interface_type == GST_TYPE_PROPERTY_PROBE && this->probe)
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return TRUE;
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#ifdef HAVE_PULSE_1_0
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if (interface_type == GST_TYPE_STREAM_VOLUME)
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return TRUE;
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#endif
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return FALSE;
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}
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@ -133,6 +151,11 @@ gst_pulsesrc_implements_interface_init (GstImplementsInterfaceClass * klass)
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static void
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gst_pulsesrc_init_interfaces (GType type)
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{
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#ifdef HAVE_PULSE_1_0
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static const GInterfaceInfo svol_iface_info = {
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NULL, NULL, NULL,
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};
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#endif
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static const GInterfaceInfo implements_iface_info = {
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(GInterfaceInitFunc) gst_pulsesrc_implements_interface_init,
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NULL,
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@ -149,6 +172,9 @@ gst_pulsesrc_init_interfaces (GType type)
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NULL,
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};
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#ifdef HAVE_PULSE_1_0
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g_type_add_interface_static (type, GST_TYPE_STREAM_VOLUME, &svol_iface_info);
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#endif
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g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,
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&implements_iface_info);
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g_type_add_interface_static (type, GST_TYPE_MIXER, &mixer_iface_info);
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@ -301,6 +327,35 @@ gst_pulsesrc_class_init (GstPulseSrcClass * klass)
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"The index of the PulseAudio source output corresponding to this "
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"record stream", 0, G_MAXUINT, PA_INVALID_INDEX,
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G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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#ifdef HAVE_PULSE_1_0
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/**
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* GstPulseSrc:volume
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*
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* The volume of the record stream. Only works when using PulseAudio 1.0 or
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* later.
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*
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* Since: 0.10.36
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*/
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g_object_class_install_property (gobject_class,
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PROP_VOLUME, g_param_spec_double ("volume", "Volume",
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"Linear volume of this stream, 1.0=100%",
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0.0, MAX_VOLUME, DEFAULT_VOLUME,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstPulseSrc:mute
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*
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* Whether the stream is muted or not. Only works when using PulseAudio 1.0
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* or later.
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*
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* Since: 0.10.36
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*/
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g_object_class_install_property (gobject_class,
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PROP_MUTE, g_param_spec_boolean ("mute", "Mute",
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"Mute state of this stream",
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DEFAULT_MUTE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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#endif
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}
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static void
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@ -324,6 +379,16 @@ gst_pulsesrc_init (GstPulseSrc * pulsesrc, GstPulseSrcClass * klass)
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pulsesrc->paused = FALSE;
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pulsesrc->in_read = FALSE;
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#ifdef HAVE_PULSE_1_0
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pulsesrc->volume = DEFAULT_VOLUME;
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pulsesrc->volume_set = FALSE;
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pulsesrc->mute = DEFAULT_MUTE;
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pulsesrc->mute_set = FALSE;
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pulsesrc->notify = 0;
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#endif
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pulsesrc->mixer = NULL;
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pulsesrc->properties = NULL;
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@ -359,7 +424,15 @@ gst_pulsesrc_destroy_context (GstPulseSrc * pulsesrc)
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if (pulsesrc->context) {
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pa_context_disconnect (pulsesrc->context);
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/* Make sure we don't get any further callbacks */
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pa_context_set_state_callback (pulsesrc->context, NULL, NULL);
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#ifdef HAVE_PULSE_1_0
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pa_context_set_subscribe_callback (pulsesrc->context, NULL, NULL);
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#endif
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pa_context_unref (pulsesrc->context);
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pulsesrc->context = NULL;
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}
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}
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@ -477,6 +550,260 @@ no_mainloop:
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}
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}
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#ifdef HAVE_PULSE_1_0
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static void
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gst_pulsesrc_source_output_info_cb (pa_context * c,
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const pa_source_output_info * i, int eol, void *userdata)
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{
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GstPulseSrc *psrc;
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psrc = GST_PULSESRC_CAST (userdata);
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if (!i)
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goto done;
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/* If the index doesn't match our current stream,
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* it implies we just recreated the stream (caps change)
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*/
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if (i->index == psrc->source_output_idx) {
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psrc->volume = pa_sw_volume_to_linear (pa_cvolume_max (&i->volume));
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psrc->mute = i->mute;
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}
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done:
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pa_threaded_mainloop_signal (psrc->mainloop, 0);
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}
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static gdouble
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gst_pulsesrc_get_stream_volume (GstPulseSrc * pulsesrc)
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{
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pa_operation *o = NULL;
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gdouble v;
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if (!pulsesrc->mainloop)
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goto no_mainloop;
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if (pulsesrc->source_output_idx == PA_INVALID_INDEX)
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goto no_index;
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pa_threaded_mainloop_lock (pulsesrc->mainloop);
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if (!(o = pa_context_get_source_output_info (pulsesrc->context,
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pulsesrc->source_output_idx, gst_pulsesrc_source_output_info_cb,
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pulsesrc)))
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goto info_failed;
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while (pa_operation_get_state (o) == PA_OPERATION_RUNNING) {
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pa_threaded_mainloop_wait (pulsesrc->mainloop);
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if (gst_pulsesrc_is_dead (pulsesrc, TRUE))
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goto unlock;
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}
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unlock:
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v = pulsesrc->volume;
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if (o)
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pa_operation_unref (o);
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pa_threaded_mainloop_unlock (pulsesrc->mainloop);
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if (v > MAX_VOLUME) {
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GST_WARNING_OBJECT (pulsesrc, "Clipped volume from %f to %f", v,
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MAX_VOLUME);
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v = MAX_VOLUME;
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}
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return v;
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/* ERRORS */
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no_mainloop:
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{
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v = pulsesrc->volume;
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GST_DEBUG_OBJECT (pulsesrc, "we have no mainloop");
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return v;
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}
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no_index:
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{
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v = pulsesrc->volume;
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GST_DEBUG_OBJECT (pulsesrc, "we don't have a stream index");
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return v;
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}
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info_failed:
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{
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GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED,
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("pa_context_get_source_output_info() failed: %s",
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pa_strerror (pa_context_errno (pulsesrc->context))), (NULL));
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goto unlock;
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}
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}
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static gboolean
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gst_pulsesrc_get_stream_mute (GstPulseSrc * pulsesrc)
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{
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pa_operation *o = NULL;
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gboolean mute;
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if (!pulsesrc->mainloop)
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goto no_mainloop;
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if (pulsesrc->source_output_idx == PA_INVALID_INDEX)
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goto no_index;
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pa_threaded_mainloop_lock (pulsesrc->mainloop);
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if (!(o = pa_context_get_source_output_info (pulsesrc->context,
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pulsesrc->source_output_idx, gst_pulsesrc_source_output_info_cb,
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pulsesrc)))
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goto info_failed;
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while (pa_operation_get_state (o) == PA_OPERATION_RUNNING) {
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pa_threaded_mainloop_wait (pulsesrc->mainloop);
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if (gst_pulsesrc_is_dead (pulsesrc, TRUE))
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goto unlock;
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}
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unlock:
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mute = pulsesrc->mute;
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if (o)
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pa_operation_unref (o);
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pa_threaded_mainloop_unlock (pulsesrc->mainloop);
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return mute;
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/* ERRORS */
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no_mainloop:
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{
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mute = pulsesrc->mute;
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GST_DEBUG_OBJECT (pulsesrc, "we have no mainloop");
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return mute;
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}
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no_index:
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{
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mute = pulsesrc->mute;
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GST_DEBUG_OBJECT (pulsesrc, "we don't have a stream index");
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return mute;
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}
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info_failed:
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{
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GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED,
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("pa_context_get_source_output_info() failed: %s",
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pa_strerror (pa_context_errno (pulsesrc->context))), (NULL));
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goto unlock;
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}
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}
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static void
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gst_pulsesrc_set_stream_volume (GstPulseSrc * pulsesrc, gdouble volume)
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{
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pa_cvolume v;
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pa_operation *o = NULL;
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if (!pulsesrc->mainloop)
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goto no_mainloop;
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if (!pulsesrc->source_output_idx)
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goto no_index;
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pa_threaded_mainloop_lock (pulsesrc->mainloop);
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GST_DEBUG_OBJECT (pulsesrc, "setting volume to %f", volume);
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gst_pulse_cvolume_from_linear (&v, pulsesrc->sample_spec.channels, volume);
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if (!(o = pa_context_set_source_output_volume (pulsesrc->context,
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pulsesrc->source_output_idx, &v, NULL, NULL)))
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goto volume_failed;
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/* We don't really care about the result of this call */
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unlock:
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if (o)
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pa_operation_unref (o);
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pa_threaded_mainloop_unlock (pulsesrc->mainloop);
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return;
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/* ERRORS */
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no_mainloop:
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{
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pulsesrc->volume = volume;
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pulsesrc->volume_set = TRUE;
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GST_DEBUG_OBJECT (pulsesrc, "we have no mainloop");
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return;
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}
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no_index:
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{
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pulsesrc->volume = volume;
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pulsesrc->volume_set = TRUE;
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GST_DEBUG_OBJECT (pulsesrc, "we don't have a stream index");
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return;
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}
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volume_failed:
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{
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GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED,
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("pa_stream_set_source_output_volume() failed: %s",
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pa_strerror (pa_context_errno (pulsesrc->context))), (NULL));
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goto unlock;
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}
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}
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static void
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gst_pulsesrc_set_stream_mute (GstPulseSrc * pulsesrc, gboolean mute)
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{
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pa_operation *o = NULL;
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if (!pulsesrc->mainloop)
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goto no_mainloop;
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if (!pulsesrc->source_output_idx)
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goto no_index;
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pa_threaded_mainloop_lock (pulsesrc->mainloop);
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GST_DEBUG_OBJECT (pulsesrc, "setting mute state to %d", mute);
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if (!(o = pa_context_set_source_output_mute (pulsesrc->context,
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pulsesrc->source_output_idx, mute, NULL, NULL)))
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goto mute_failed;
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/* We don't really care about the result of this call */
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unlock:
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if (o)
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pa_operation_unref (o);
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pa_threaded_mainloop_unlock (pulsesrc->mainloop);
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return;
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/* ERRORS */
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no_mainloop:
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{
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pulsesrc->mute = mute;
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pulsesrc->mute_set = TRUE;
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GST_DEBUG_OBJECT (pulsesrc, "we have no mainloop");
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return;
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}
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no_index:
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{
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pulsesrc->mute = mute;
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pulsesrc->mute_set = TRUE;
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GST_DEBUG_OBJECT (pulsesrc, "we don't have a stream index");
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return;
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}
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mute_failed:
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{
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GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED,
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("pa_stream_set_source_output_mute() failed: %s",
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pa_strerror (pa_context_errno (pulsesrc->context))), (NULL));
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goto unlock;
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}
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}
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#endif
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static void
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gst_pulsesrc_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec)
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@ -513,6 +840,14 @@ gst_pulsesrc_set_property (GObject * object,
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pa_proplist_free (pulsesrc->proplist);
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pulsesrc->proplist = gst_pulse_make_proplist (pulsesrc->properties);
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break;
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#ifdef HAVE_PULSE_1_0
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case PROP_VOLUME:
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gst_pulsesrc_set_stream_volume (pulsesrc, g_value_get_double (value));
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break;
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case PROP_MUTE:
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gst_pulsesrc_set_stream_mute (pulsesrc, g_value_get_boolean (value));
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break;
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#endif
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -545,6 +880,14 @@ gst_pulsesrc_get_property (GObject * object,
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case PROP_SOURCE_OUTPUT_INDEX:
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g_value_set_uint (value, pulsesrc->source_output_idx);
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break;
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#ifdef HAVE_PULSE_1_0
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case PROP_VOLUME:
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g_value_set_double (value, gst_pulsesrc_get_stream_volume (pulsesrc));
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break;
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case PROP_MUTE:
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g_value_set_boolean (value, gst_pulsesrc_get_stream_mute (pulsesrc));
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break;
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#endif
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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|
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@ -638,6 +981,30 @@ gst_pulsesrc_stream_overflow_cb (pa_stream * s, void *userdata)
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GST_WARNING_OBJECT (GST_PULSESRC_CAST (userdata), "Got overflow");
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}
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#ifdef HAVE_PULSE_1_0
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static void
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gst_pulsesrc_context_subscribe_cb (pa_context * c,
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pa_subscription_event_type_t t, uint32_t idx, void *userdata)
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{
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GstPulseSrc *psrc = GST_PULSESRC (userdata);
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if (t != (PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT | PA_SUBSCRIPTION_EVENT_CHANGE)
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&& t != (PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT | PA_SUBSCRIPTION_EVENT_NEW))
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return;
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if (idx != psrc->source_output_idx)
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return;
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/* Actually this event is also triggered when other properties of the stream
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* change that are unrelated to the volume. However it is probably cheaper to
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* signal the change here and check for the volume when the GObject property
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* is read instead of querying it always. */
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/* inform streaming thread to notify */
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g_atomic_int_compare_and_exchange (&psrc->notify, 0, 1);
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}
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#endif
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static gboolean
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gst_pulsesrc_open (GstAudioSrc * asrc)
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{
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|
|
@ -660,6 +1027,10 @@ gst_pulsesrc_open (GstAudioSrc * asrc)
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|
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pa_context_set_state_callback (pulsesrc->context,
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gst_pulsesrc_context_state_cb, pulsesrc);
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#ifdef HAVE_PULSE_1_0
|
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pa_context_set_subscribe_callback (pulsesrc->context,
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gst_pulsesrc_context_subscribe_cb, pulsesrc);
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#endif
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GST_DEBUG_OBJECT (pulsesrc, "connect to server %s",
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GST_STR_NULL (pulsesrc->server));
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|
|
@ -741,6 +1112,13 @@ gst_pulsesrc_read (GstAudioSrc * asrc, gpointer data, guint length)
|
|||
pa_threaded_mainloop_lock (pulsesrc->mainloop);
|
||||
pulsesrc->in_read = TRUE;
|
||||
|
||||
#ifdef HAVE_PULSE_1_0
|
||||
if (g_atomic_int_compare_and_exchange (&pulsesrc->notify, 1, 0)) {
|
||||
g_object_notify (G_OBJECT (pulsesrc), "volume");
|
||||
g_object_notify (G_OBJECT (pulsesrc), "mute");
|
||||
}
|
||||
#endif
|
||||
|
||||
if (pulsesrc->paused)
|
||||
goto was_paused;
|
||||
|
||||
|
|
@ -1040,9 +1418,27 @@ gst_pulsesrc_prepare (GstAudioSrc * asrc, GstRingBufferSpec * spec)
|
|||
pa_buffer_attr wanted;
|
||||
const pa_buffer_attr *actual;
|
||||
GstPulseSrc *pulsesrc = GST_PULSESRC_CAST (asrc);
|
||||
pa_stream_flags_t flags;
|
||||
#ifdef HAVE_PULSE_1_0
|
||||
pa_operation *o;
|
||||
#endif
|
||||
|
||||
pa_threaded_mainloop_lock (pulsesrc->mainloop);
|
||||
|
||||
#ifdef HAVE_PULSE_1_0
|
||||
/* enable event notifications */
|
||||
GST_LOG_OBJECT (pulsesrc, "subscribing to context events");
|
||||
if (!(o = pa_context_subscribe (pulsesrc->context,
|
||||
PA_SUBSCRIPTION_MASK_SINK_INPUT, NULL, NULL))) {
|
||||
GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED,
|
||||
("pa_context_subscribe() failed: %s",
|
||||
pa_strerror (pa_context_errno (pulsesrc->context))), (NULL));
|
||||
goto unlock_and_fail;
|
||||
}
|
||||
|
||||
pa_operation_unref (o);
|
||||
#endif
|
||||
|
||||
wanted.maxlength = -1;
|
||||
wanted.tlength = -1;
|
||||
wanted.prebuf = 0;
|
||||
|
|
@ -1055,10 +1451,17 @@ gst_pulsesrc_prepare (GstAudioSrc * asrc, GstRingBufferSpec * spec)
|
|||
GST_INFO_OBJECT (pulsesrc, "minreq: %d", wanted.minreq);
|
||||
GST_INFO_OBJECT (pulsesrc, "fragsize: %d", wanted.fragsize);
|
||||
|
||||
flags = PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE |
|
||||
PA_STREAM_NOT_MONOTONIC | PA_STREAM_ADJUST_LATENCY |
|
||||
PA_STREAM_START_CORKED;
|
||||
|
||||
#ifdef HAVE_PULSE_1_0
|
||||
if (pulsesrc->mute_set && pulsesrc->mute)
|
||||
flags |= PA_STREAM_START_MUTED;
|
||||
#endif
|
||||
|
||||
if (pa_stream_connect_record (pulsesrc->stream, pulsesrc->device, &wanted,
|
||||
PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE |
|
||||
PA_STREAM_NOT_MONOTONIC | PA_STREAM_ADJUST_LATENCY |
|
||||
PA_STREAM_START_CORKED) < 0) {
|
||||
flags) < 0) {
|
||||
GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED,
|
||||
("Failed to connect stream: %s",
|
||||
pa_strerror (pa_context_errno (pulsesrc->context))), (NULL));
|
||||
|
|
@ -1090,6 +1493,13 @@ gst_pulsesrc_prepare (GstAudioSrc * asrc, GstRingBufferSpec * spec)
|
|||
pulsesrc->source_output_idx = pa_stream_get_index (pulsesrc->stream);
|
||||
g_object_notify (G_OBJECT (pulsesrc), "source-output-index");
|
||||
|
||||
#ifdef HAVE_PULSE_1_0
|
||||
if (pulsesrc->volume_set) {
|
||||
gst_pulsesrc_set_stream_volume (pulsesrc, pulsesrc->volume);
|
||||
pulsesrc->volume_set = FALSE;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* get the actual buffering properties now */
|
||||
actual = pa_stream_get_buffer_attr (pulsesrc->stream);
|
||||
|
||||
|
|
|
|||
|
|
@ -72,6 +72,15 @@ struct _GstPulseSrc
|
|||
GstPulseMixerCtrl *mixer;
|
||||
GstPulseProbe *probe;
|
||||
|
||||
#ifdef HAVE_PULSE_1_0
|
||||
gdouble volume;
|
||||
gboolean volume_set:1;
|
||||
gboolean mute:1;
|
||||
gboolean mute_set:1;
|
||||
|
||||
gint notify; /* atomic */
|
||||
#endif
|
||||
|
||||
gboolean corked:1;
|
||||
gboolean operation_success:1;
|
||||
gboolean paused:1;
|
||||
|
|
|
|||
Loading…
Reference in a new issue