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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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415 lines
13 KiB
C
415 lines
13 KiB
C
/* GStreamer
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* Copyright (C) 2016 Iskratel d.o.o.
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* Author: Okrslar Ales <okrslar@iskratel.si>
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* Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gsttonegeneratesrc.h"
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#undef IT_DBG
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GST_DEBUG_CATEGORY_STATIC (tone_generate_src_debug);
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#define GST_CAT_DEFAULT tone_generate_src_debug
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#define DEFAULT_SAMPLES_PER_BUFFER 1024
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#define DEFAULT_FREQ 0
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#define DEFAULT_VOLUME 0
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#define DEFAULT_ON_TIME 1000
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#define DEFAULT_OFF_TIME 1000
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#define DEFAULT_REPEAT FALSE
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enum
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{
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PROP_0,
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PROP_SAMPLES_PER_BUFFER,
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PROP_FREQ,
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PROP_VOLUME,
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PROP_FREQ2,
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PROP_VOLUME2,
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PROP_ON_TIME,
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PROP_OFF_TIME,
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PROP_ON_TIME2,
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PROP_OFF_TIME2,
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PROP_REPEAT,
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PROP_LAST
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};
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static GstStaticPadTemplate gst_tone_generate_src_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw, "
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"format = (string) " GST_AUDIO_NE (S16) ", "
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"layout = (string) interleaved, " "rate = (int) 8000, " "channels = 1")
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);
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#define gst_tone_generate_src_parent_class parent_class
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G_DEFINE_TYPE (GstToneGenerateSrc, gst_tone_generate_src, GST_TYPE_PUSH_SRC);
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static void gst_tone_generate_src_finalize (GObject * object);
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static void gst_tone_generate_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_tone_generate_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_tone_generate_src_start (GstBaseSrc * basesrc);
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static gboolean gst_tone_generate_src_stop (GstBaseSrc * basesrc);
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static GstFlowReturn gst_tone_generate_src_fill (GstPushSrc * basesrc,
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GstBuffer * buffer);
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static void
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gst_tone_generate_src_class_init (GstToneGenerateSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseSrcClass *gstbasesrc_class;
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GstPushSrcClass *gstpushsrc_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasesrc_class = (GstBaseSrcClass *) klass;
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gstpushsrc_class = (GstPushSrcClass *) klass;
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gobject_class->set_property = gst_tone_generate_src_set_property;
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gobject_class->get_property = gst_tone_generate_src_get_property;
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gobject_class->finalize = gst_tone_generate_src_finalize;
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g_object_class_install_property (gobject_class, PROP_SAMPLES_PER_BUFFER,
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g_param_spec_int ("samplesperbuffer", "Samples per buffer",
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"Number of samples in each outgoing buffer",
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1, G_MAXINT, DEFAULT_SAMPLES_PER_BUFFER,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_FREQ,
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g_param_spec_int ("freq", "Frequency", "Frequency of test signal",
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0, 20000, DEFAULT_FREQ, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_VOLUME,
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g_param_spec_int ("volume", "Volume",
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"Volume of first signal",
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-50, 0, DEFAULT_VOLUME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_FREQ2,
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g_param_spec_int ("freq2", "Second Frequency",
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"Frequency of second telephony tone component",
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0, 20000, DEFAULT_FREQ, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_VOLUME2,
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g_param_spec_int ("volume2", "Volume2",
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"Volume of second tone signal",
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-50, 0, DEFAULT_VOLUME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_ON_TIME,
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g_param_spec_int ("on-time", "Signal ON time first period",
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"Time of the first period when the tone signal is present", 1,
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G_MAXINT, DEFAULT_ON_TIME, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_OFF_TIME,
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g_param_spec_int ("off-time", "Signal OFF time first period ",
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"Time of the first period when the tone signal is off", 0, G_MAXINT,
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DEFAULT_OFF_TIME, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_ON_TIME2,
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g_param_spec_int ("on-time2", "Signal ON time second period",
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"Time of the second period when the tone signal is present", 1,
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G_MAXINT, DEFAULT_ON_TIME, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_OFF_TIME2,
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g_param_spec_int ("off-time2", "Signal OFF time first period ",
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"Time of the second period when the tone signal is off", 0, G_MAXINT,
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DEFAULT_ON_TIME, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_REPEAT,
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g_param_spec_boolean ("repeat", "Repeat the specified tone period ",
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"Whether to repeat specified tone indefinitely", DEFAULT_REPEAT,
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G_PARAM_READWRITE));
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_tone_generate_src_src_template);
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gst_element_class_set_static_metadata (gstelement_class,
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"Telephony Tone Generator source", "Source/Audio",
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"Creates telephony signals of given frequency, volume, cadence",
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"Iskratel <www.iskratel.com>");
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gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_tone_generate_src_start);
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gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_tone_generate_src_stop);
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gstpushsrc_class->fill = GST_DEBUG_FUNCPTR (gst_tone_generate_src_fill);
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}
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static void
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gst_tone_generate_src_init (GstToneGenerateSrc * src)
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{
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src->volume = DEFAULT_VOLUME;
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src->freq = DEFAULT_FREQ;
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src->on_time = DEFAULT_ON_TIME;
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src->off_time = DEFAULT_OFF_TIME;
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src->volume2 = DEFAULT_VOLUME;
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src->freq2 = DEFAULT_FREQ;
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src->on_time2 = DEFAULT_ON_TIME;
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src->off_time2 = DEFAULT_OFF_TIME;
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src->repeat = DEFAULT_REPEAT;
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gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
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src->samples_per_buffer = DEFAULT_SAMPLES_PER_BUFFER;
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gst_base_src_set_blocksize (GST_BASE_SRC (src), 2 * src->samples_per_buffer);
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}
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static void
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gst_tone_generate_src_finalize (GObject * object)
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{
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GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (object);
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if (src->tone_desc) {
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tone_gen_descriptor_free (src->tone_desc);
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src->tone_desc = NULL;
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}
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if (src->tone_state) {
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tone_gen_free (src->tone_state);
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src->tone_state = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_tone_generate_src_start (GstBaseSrc * basesrc)
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{
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GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (basesrc);
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GST_OBJECT_LOCK (src);
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src->properties_changed = FALSE;
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GST_OBJECT_UNLOCK (src);
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src->next_sample = 0;
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src->next_time = 0;
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return TRUE;
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}
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static gboolean
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gst_tone_generate_src_stop (GstBaseSrc * basesrc)
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{
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GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (basesrc);
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GST_OBJECT_LOCK (src);
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if (src->tone_desc) {
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tone_gen_descriptor_free (src->tone_desc);
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src->tone_desc = NULL;
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}
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if (src->tone_state) {
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tone_gen_free (src->tone_state);
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src->tone_state = NULL;
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}
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src->properties_changed = FALSE;
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GST_OBJECT_UNLOCK (src);
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return TRUE;
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}
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static GstFlowReturn
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gst_tone_generate_src_fill (GstPushSrc * basesrc, GstBuffer * buffer)
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{
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GstToneGenerateSrc *src;
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GstClockTime next_time;
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gint64 next_sample;
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gint bytes, samples;
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GstMapInfo map;
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const gint samplerate = 8000, bpf = 2;
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src = GST_TONE_GENERATE_SRC (basesrc);
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bytes = gst_buffer_get_size (buffer);
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samples = bytes / bpf;
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/* calculate full buffer */
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next_sample = src->next_sample + samples;
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next_time = gst_util_uint64_scale_int (next_sample, GST_SECOND, samplerate);
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GST_LOG_OBJECT (src, "samplerate %d", samplerate);
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GST_LOG_OBJECT (src, "next_sample %" G_GINT64_FORMAT ", ts %" GST_TIME_FORMAT,
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next_sample, GST_TIME_ARGS (next_time));
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GST_BUFFER_OFFSET (buffer) = src->next_sample;
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GST_BUFFER_OFFSET_END (buffer) = next_sample;
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GST_BUFFER_TIMESTAMP (buffer) = src->next_time;
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GST_BUFFER_DURATION (buffer) = next_time - src->next_time;
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gst_object_sync_values (GST_OBJECT (src), GST_BUFFER_TIMESTAMP (buffer));
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src->next_time = next_time;
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src->next_sample = next_sample;
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GST_LOG_OBJECT (src, "generating %u samples at ts %" GST_TIME_FORMAT,
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samples, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
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gst_buffer_map (buffer, &map, GST_MAP_WRITE);
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GST_OBJECT_LOCK (src);
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if (!src->tone_state || src->properties_changed) {
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src->tone_desc = tone_gen_descriptor_init (src->tone_desc,
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src->freq,
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src->volume,
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src->freq2,
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src->volume2,
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src->on_time,
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src->off_time, src->on_time2, src->off_time2, src->repeat);
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src->tone_state = tone_gen_init (src->tone_state, src->tone_desc);
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src->properties_changed = FALSE;
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}
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tone_gen (src->tone_state, (int16_t *) map.data, samples);
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GST_OBJECT_UNLOCK (src);
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gst_buffer_unmap (buffer, &map);
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return GST_FLOW_OK;
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}
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static void
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gst_tone_generate_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (object);
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switch (prop_id) {
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case PROP_SAMPLES_PER_BUFFER:
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src->samples_per_buffer = g_value_get_int (value);
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gst_base_src_set_blocksize (GST_BASE_SRC_CAST (src),
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2 * src->samples_per_buffer);
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break;
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case PROP_FREQ:
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GST_OBJECT_LOCK (src);
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src->freq = g_value_get_int (value);
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src->properties_changed = TRUE;
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GST_OBJECT_UNLOCK (src);
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break;
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case PROP_VOLUME:
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GST_OBJECT_LOCK (src);
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src->volume = g_value_get_int (value);
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src->properties_changed = TRUE;
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GST_OBJECT_UNLOCK (src);
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break;
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case PROP_FREQ2:
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GST_OBJECT_LOCK (src);
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src->freq2 = g_value_get_int (value);
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src->properties_changed = TRUE;
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GST_OBJECT_UNLOCK (src);
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break;
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case PROP_VOLUME2:
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GST_OBJECT_LOCK (src);
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src->volume2 = g_value_get_int (value);
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src->properties_changed = TRUE;
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GST_OBJECT_UNLOCK (src);
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break;
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case PROP_ON_TIME:
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GST_OBJECT_LOCK (src);
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src->on_time = g_value_get_int (value);
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src->properties_changed = TRUE;
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GST_OBJECT_UNLOCK (src);
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break;
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case PROP_ON_TIME2:
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GST_OBJECT_LOCK (src);
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src->on_time2 = g_value_get_int (value);
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src->properties_changed = TRUE;
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GST_OBJECT_UNLOCK (src);
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break;
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case PROP_OFF_TIME:
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GST_OBJECT_LOCK (src);
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src->off_time = g_value_get_int (value);
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src->properties_changed = TRUE;
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GST_OBJECT_UNLOCK (src);
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break;
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case PROP_OFF_TIME2:
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GST_OBJECT_LOCK (src);
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src->off_time2 = g_value_get_int (value);
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src->properties_changed = TRUE;
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GST_OBJECT_UNLOCK (src);
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break;
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case PROP_REPEAT:
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GST_OBJECT_LOCK (src);
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src->repeat = g_value_get_boolean (value);
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src->properties_changed = TRUE;
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GST_OBJECT_UNLOCK (src);
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break;
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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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}
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static void
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gst_tone_generate_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (object);
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switch (prop_id) {
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case PROP_SAMPLES_PER_BUFFER:
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g_value_set_int (value, src->samples_per_buffer);
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break;
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case PROP_FREQ:
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g_value_set_int (value, src->freq);
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break;
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case PROP_VOLUME:
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g_value_set_int (value, src->volume);
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break;
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case PROP_FREQ2:
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g_value_set_int (value, src->freq2);
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break;
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case PROP_VOLUME2:
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g_value_set_int (value, src->volume2);
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break;
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case PROP_ON_TIME:
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g_value_set_int (value, src->on_time);
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break;
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case PROP_OFF_TIME:
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g_value_set_int (value, src->off_time);
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break;
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case PROP_ON_TIME2:
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g_value_set_int (value, src->on_time2);
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break;
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case PROP_OFF_TIME2:
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g_value_set_int (value, src->off_time2);
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break;
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case PROP_REPEAT:
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g_value_set_boolean (value, src->repeat);
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break;
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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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}
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gboolean
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gst_tone_generate_src_plugin_init (GstPlugin * plugin)
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{
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GST_DEBUG_CATEGORY_INIT (tone_generate_src_debug, "tonegeneratesrc", 0,
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"Telephony Tone Test Source");
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return gst_element_register (plugin, "tonegeneratesrc",
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GST_RANK_NONE, GST_TYPE_TONE_GENERATE_SRC);
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}
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