/* GStreamer
* Copyright (C) 2016 Iskratel d.o.o.
* Author: Okrslar Ales <okrslar@iskratel.si>
* Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.com>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gsttonegeneratesrc.h"
#undef IT_DBG
GST_DEBUG_CATEGORY_STATIC (tone_generate_src_debug);
#define GST_CAT_DEFAULT tone_generate_src_debug
#define DEFAULT_SAMPLES_PER_BUFFER 1024
#define DEFAULT_FREQ 0
#define DEFAULT_VOLUME 0
#define DEFAULT_ON_TIME 1000
#define DEFAULT_OFF_TIME 1000
#define DEFAULT_REPEAT FALSE
enum
{
PROP_0,
PROP_SAMPLES_PER_BUFFER,
PROP_FREQ,
PROP_VOLUME,
PROP_FREQ2,
PROP_VOLUME2,
PROP_ON_TIME,
PROP_OFF_TIME,
PROP_ON_TIME2,
PROP_OFF_TIME2,
PROP_REPEAT,
PROP_LAST
};
static GstStaticPadTemplate gst_tone_generate_src_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw, "
"format = (string) " GST_AUDIO_NE (S16) ", "
"layout = (string) interleaved, " "rate = (int) 8000, " "channels = 1")
);
#define gst_tone_generate_src_parent_class parent_class
G_DEFINE_TYPE (GstToneGenerateSrc, gst_tone_generate_src, GST_TYPE_PUSH_SRC);
static void gst_tone_generate_src_finalize (GObject * object);
static void gst_tone_generate_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_tone_generate_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_tone_generate_src_start (GstBaseSrc * basesrc);
static gboolean gst_tone_generate_src_stop (GstBaseSrc * basesrc);
static GstFlowReturn gst_tone_generate_src_fill (GstPushSrc * basesrc,
GstBuffer * buffer);
static void
gst_tone_generate_src_class_init (GstToneGenerateSrcClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSrcClass *gstbasesrc_class;
GstPushSrcClass *gstpushsrc_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesrc_class = (GstBaseSrcClass *) klass;
gstpushsrc_class = (GstPushSrcClass *) klass;
gobject_class->set_property = gst_tone_generate_src_set_property;
gobject_class->get_property = gst_tone_generate_src_get_property;
gobject_class->finalize = gst_tone_generate_src_finalize;
g_object_class_install_property (gobject_class, PROP_SAMPLES_PER_BUFFER,
g_param_spec_int ("samplesperbuffer", "Samples per buffer",
"Number of samples in each outgoing buffer",
1, G_MAXINT, DEFAULT_SAMPLES_PER_BUFFER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FREQ,
g_param_spec_int ("freq", "Frequency", "Frequency of test signal",
0, 20000, DEFAULT_FREQ, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_VOLUME,
g_param_spec_int ("volume", "Volume",
"Volume of first signal",
-50, 0, DEFAULT_VOLUME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FREQ2,
g_param_spec_int ("freq2", "Second Frequency",
"Frequency of second telephony tone component",
0, 20000, DEFAULT_FREQ, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_VOLUME2,
g_param_spec_int ("volume2", "Volume2",
"Volume of second tone signal",
-50, 0, DEFAULT_VOLUME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ON_TIME,
g_param_spec_int ("on-time", "Signal ON time first period",
"Time of the first period when the tone signal is present", 1,
G_MAXINT, DEFAULT_ON_TIME, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_OFF_TIME,
g_param_spec_int ("off-time", "Signal OFF time first period ",
"Time of the first period when the tone signal is off", 0, G_MAXINT,
DEFAULT_OFF_TIME, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_ON_TIME2,
g_param_spec_int ("on-time2", "Signal ON time second period",
"Time of the second period when the tone signal is present", 1,
G_MAXINT, DEFAULT_ON_TIME, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_OFF_TIME2,
g_param_spec_int ("off-time2", "Signal OFF time first period ",
"Time of the second period when the tone signal is off", 0, G_MAXINT,
DEFAULT_ON_TIME, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_REPEAT,
g_param_spec_boolean ("repeat", "Repeat the specified tone period ",
"Whether to repeat specified tone indefinitly", DEFAULT_REPEAT,
G_PARAM_READWRITE));
gst_element_class_add_static_pad_template (gstelement_class,
&gst_tone_generate_src_src_template);
gst_element_class_set_static_metadata (gstelement_class,
"Telephony Tone Generator source", "Source/Audio",
"Creates telephony signals of given frequency, volume, cadence",
"Iskratel <www.iskratel.com>");
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_tone_generate_src_start);
gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_tone_generate_src_stop);
gstpushsrc_class->fill = GST_DEBUG_FUNCPTR (gst_tone_generate_src_fill);
}
static void
gst_tone_generate_src_init (GstToneGenerateSrc * src)
{
src->volume = DEFAULT_VOLUME;
src->freq = DEFAULT_FREQ;
src->on_time = DEFAULT_ON_TIME;
src->off_time = DEFAULT_OFF_TIME;
src->volume2 = DEFAULT_VOLUME;
src->freq2 = DEFAULT_FREQ;
src->on_time2 = DEFAULT_ON_TIME;
src->off_time2 = DEFAULT_OFF_TIME;
src->repeat = DEFAULT_REPEAT;
gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
src->samples_per_buffer = DEFAULT_SAMPLES_PER_BUFFER;
gst_base_src_set_blocksize (GST_BASE_SRC (src), 2 * src->samples_per_buffer);
}
static void
gst_tone_generate_src_finalize (GObject * object)
{
GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (object);
if (src->tone_desc) {
tone_gen_descriptor_free (src->tone_desc);
src->tone_desc = NULL;
}
if (src->tone_state) {
tone_gen_free (src->tone_state);
src->tone_state = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_tone_generate_src_start (GstBaseSrc * basesrc)
{
GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (basesrc);
GST_OBJECT_LOCK (src);
src->properties_changed = FALSE;
GST_OBJECT_UNLOCK (src);
src->next_sample = 0;
src->next_time = 0;
return TRUE;
}
static gboolean
gst_tone_generate_src_stop (GstBaseSrc * basesrc)
{
GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (basesrc);
GST_OBJECT_LOCK (src);
if (src->tone_desc) {
tone_gen_descriptor_free (src->tone_desc);
src->tone_desc = NULL;
}
if (src->tone_state) {
tone_gen_free (src->tone_state);
src->tone_state = NULL;
}
src->properties_changed = FALSE;
GST_OBJECT_UNLOCK (src);
return TRUE;
}
static GstFlowReturn
gst_tone_generate_src_fill (GstPushSrc * basesrc, GstBuffer * buffer)
{
GstToneGenerateSrc *src;
GstClockTime next_time;
gint64 next_sample;
gint bytes, samples;
GstMapInfo map;
const gint samplerate = 8000, bpf = 2;
src = GST_TONE_GENERATE_SRC (basesrc);
bytes = gst_buffer_get_size (buffer);
samples = bytes / bpf;
/* calculate full buffer */
next_sample = src->next_sample + samples;
next_time = gst_util_uint64_scale_int (next_sample, GST_SECOND, samplerate);
GST_LOG_OBJECT (src, "samplerate %d", samplerate);
GST_LOG_OBJECT (src, "next_sample %" G_GINT64_FORMAT ", ts %" GST_TIME_FORMAT,
next_sample, GST_TIME_ARGS (next_time));
GST_BUFFER_OFFSET (buffer) = src->next_sample;
GST_BUFFER_OFFSET_END (buffer) = next_sample;
GST_BUFFER_TIMESTAMP (buffer) = src->next_time;
GST_BUFFER_DURATION (buffer) = next_time - src->next_time;
gst_object_sync_values (GST_OBJECT (src), GST_BUFFER_TIMESTAMP (buffer));
src->next_time = next_time;
src->next_sample = next_sample;
GST_LOG_OBJECT (src, "generating %u samples at ts %" GST_TIME_FORMAT,
samples, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
gst_buffer_map (buffer, &map, GST_MAP_WRITE);
GST_OBJECT_LOCK (src);
if (!src->tone_state || src->properties_changed) {
src->tone_desc = tone_gen_descriptor_init (src->tone_desc,
src->freq,
src->volume,
src->freq2,
src->volume2,
src->on_time,
src->off_time, src->on_time2, src->off_time2, src->repeat);
src->tone_state = tone_gen_init (src->tone_state, src->tone_desc);
src->properties_changed = FALSE;
}
tone_gen (src->tone_state, (int16_t *) map.data, samples);
GST_OBJECT_UNLOCK (src);
gst_buffer_unmap (buffer, &map);
return GST_FLOW_OK;
}
static void
gst_tone_generate_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (object);
switch (prop_id) {
case PROP_SAMPLES_PER_BUFFER:
src->samples_per_buffer = g_value_get_int (value);
gst_base_src_set_blocksize (GST_BASE_SRC_CAST (src),
2 * src->samples_per_buffer);
break;
case PROP_FREQ:
GST_OBJECT_LOCK (src);
src->freq = g_value_get_int (value);
src->properties_changed = TRUE;
GST_OBJECT_UNLOCK (src);
break;
case PROP_VOLUME:
GST_OBJECT_LOCK (src);
src->volume = g_value_get_int (value);
src->properties_changed = TRUE;
GST_OBJECT_UNLOCK (src);
break;
case PROP_FREQ2:
GST_OBJECT_LOCK (src);
src->freq2 = g_value_get_int (value);
src->properties_changed = TRUE;
GST_OBJECT_UNLOCK (src);
break;
case PROP_VOLUME2:
GST_OBJECT_LOCK (src);
src->volume2 = g_value_get_int (value);
src->properties_changed = TRUE;
GST_OBJECT_UNLOCK (src);
break;
case PROP_ON_TIME:
GST_OBJECT_LOCK (src);
src->on_time = g_value_get_int (value);
src->properties_changed = TRUE;
GST_OBJECT_UNLOCK (src);
break;
case PROP_ON_TIME2:
GST_OBJECT_LOCK (src);
src->on_time2 = g_value_get_int (value);
src->properties_changed = TRUE;
GST_OBJECT_UNLOCK (src);
break;
case PROP_OFF_TIME:
GST_OBJECT_LOCK (src);
src->off_time = g_value_get_int (value);
src->properties_changed = TRUE;
GST_OBJECT_UNLOCK (src);
break;
case PROP_OFF_TIME2:
GST_OBJECT_LOCK (src);
src->off_time2 = g_value_get_int (value);
src->properties_changed = TRUE;
GST_OBJECT_UNLOCK (src);
break;
case PROP_REPEAT:
GST_OBJECT_LOCK (src);
src->repeat = g_value_get_boolean (value);
src->properties_changed = TRUE;
GST_OBJECT_UNLOCK (src);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_tone_generate_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstToneGenerateSrc *src = GST_TONE_GENERATE_SRC (object);
switch (prop_id) {
case PROP_SAMPLES_PER_BUFFER:
g_value_set_int (value, src->samples_per_buffer);
break;
case PROP_FREQ:
g_value_set_int (value, src->freq);
break;
case PROP_VOLUME:
g_value_set_int (value, src->volume);
break;
case PROP_FREQ2:
g_value_set_int (value, src->freq2);
break;
case PROP_VOLUME2:
g_value_set_int (value, src->volume2);
break;
case PROP_ON_TIME:
g_value_set_int (value, src->on_time);
break;
case PROP_OFF_TIME:
g_value_set_int (value, src->off_time);
break;
case PROP_ON_TIME2:
g_value_set_int (value, src->on_time2);
break;
case PROP_OFF_TIME2:
g_value_set_int (value, src->off_time2);
break;
case PROP_REPEAT:
g_value_set_boolean (value, src->repeat);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
gboolean
gst_tone_generate_src_plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (tone_generate_src_debug, "tonegeneratesrc", 0,
"Telephony Tone Test Source");
return gst_element_register (plugin, "tonegeneratesrc",
GST_RANK_NONE, GST_TYPE_TONE_GENERATE_SRC);
}