gstreamer/ext/flite/gstflitetestsrc.c

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/* GStreamer
* Copyright (C) 2010 David Schleef <ds@schleef.org>
* Copyright (C) 2005 Stefan Kost <ensonic@users.sf.net>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/base/gstbasesrc.h>
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#include <gst/base/gstadapter.h>
#include <gst/audio/multichannel.h>
#include <flite/flite.h>
#define GST_TYPE_FLITE_TEST_SRC \
(gst_flite_test_src_get_type())
#define GST_FLITE_TEST_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FLITE_TEST_SRC,GstFliteTestSrc))
#define GST_FLITE_TEST_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FLITE_TEST_SRC,GstFliteTestSrcClass))
#define GST_IS_FLITE_TEST_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FLITE_TEST_SRC))
#define GST_IS_FLITE_TEST_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FLITE_TEST_SRC))
typedef struct _GstFliteTestSrc GstFliteTestSrc;
typedef struct _GstFliteTestSrcClass GstFliteTestSrcClass;
struct _GstFliteTestSrc
{
GstBaseSrc parent;
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GstAdapter *adapter;
int samplerate;
int n_channels;
GstAudioChannelPosition *layout;
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int samples_per_buffer;
int channel;
cst_voice *voice;
};
struct _GstFliteTestSrcClass
{
GstBaseSrcClass parent_class;
};
GType gst_flite_test_src_get_type (void);
GST_DEBUG_CATEGORY_STATIC (flite_test_src_debug);
#define GST_CAT_DEFAULT flite_test_src_debug
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#define DEFAULT_SAMPLES_PER_BUFFER 1024
enum
{
PROP_0,
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PROP_SAMPLES_PER_BUFFER,
PROP_LAST
};
static GstStaticPadTemplate gst_flite_test_src_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw, "
"format = (string) " GST_AUDIO_NE (s16) ", "
"rate = (int) 48000, " "channels = (int) [1,8]")
);
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#define gst_flite_test_src_parent_class parent_class
G_DEFINE_TYPE (GstFliteTestSrc, gst_flite_test_src, GST_TYPE_BASE_SRC);
static void gst_flite_test_src_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_flite_test_src_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static gboolean gst_flite_test_src_start (GstBaseSrc * basesrc);
static gboolean gst_flite_test_src_stop (GstBaseSrc * basesrc);
static GstFlowReturn gst_flite_test_src_create (GstBaseSrc * basesrc,
guint64 offset, guint length, GstBuffer ** buffer);
static gboolean
gst_flite_test_src_set_caps (GstBaseSrc * basesrc, GstCaps * caps);
static void
gst_flite_test_src_class_init (GstFliteTestSrcClass * klass)
{
GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
GstBaseSrcClass *gstbasesrc_class;
gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
gstbasesrc_class = (GstBaseSrcClass *) klass;
gobject_class->set_property = gst_flite_test_src_set_property;
gobject_class->get_property = gst_flite_test_src_get_property;
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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));
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gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&gst_flite_test_src_src_template));
gst_element_class_set_details_simple (gstelement_class,
"Flite speech test source", "Source/Audio",
"Creates audio test signals identifying channels",
"David Schleef <ds@schleef.org>");
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_flite_test_src_start);
gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_flite_test_src_stop);
gstbasesrc_class->create = GST_DEBUG_FUNCPTR (gst_flite_test_src_create);
gstbasesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_flite_test_src_set_caps);
GST_DEBUG_CATEGORY_INIT (flite_test_src_debug, "flitetestsrc", 0,
"Flite Audio Test Source");
}
static void
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gst_flite_test_src_init (GstFliteTestSrc * src)
{
src->samplerate = 48000;
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src->samples_per_buffer = DEFAULT_SAMPLES_PER_BUFFER;
/* we operate in time */
gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
gst_base_src_set_blocksize (GST_BASE_SRC (src), -1);
}
static gboolean
gst_flite_test_src_set_caps (GstBaseSrc * basesrc, GstCaps * caps)
{
GstFliteTestSrc *src = GST_FLITE_TEST_SRC (basesrc);
GstStructure *structure;
gboolean ret;
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "channels", &src->n_channels);
g_free (src->layout);
if (src->n_channels < 3) {
src->layout = g_malloc (sizeof (GstAudioChannelPosition) * 2);
if (src->n_channels == 1) {
src->layout[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO;
} else {
src->layout[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
src->layout[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
}
} else {
src->layout = gst_audio_get_channel_positions (structure);
if (src->layout == NULL) {
/* thanks, libgstaudio, for returning us NULL instead of
* doing this yourself. */
int i;
src->layout =
g_malloc (sizeof (GstAudioChannelPosition) * src->n_channels);
for (i = 0; i < src->n_channels; i++) {
src->layout[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
}
}
}
return ret;
}
#if 0
static gboolean
gst_flite_test_src_query (GstBaseSrc * basesrc, GstQuery * query)
{
GstFliteTestSrc *src = GST_FLITE_TEST_SRC (basesrc);
gboolean res = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONVERT:
{
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
if (src_fmt == dest_fmt) {
dest_val = src_val;
goto done;
}
switch (src_fmt) {
case GST_FORMAT_DEFAULT:
switch (dest_fmt) {
case GST_FORMAT_TIME:
/* samples to time */
dest_val =
gst_util_uint64_scale_int (src_val, GST_SECOND,
src->samplerate);
break;
default:
goto error;
}
break;
case GST_FORMAT_TIME:
switch (dest_fmt) {
case GST_FORMAT_DEFAULT:
/* time to samples */
dest_val =
gst_util_uint64_scale_int (src_val, src->samplerate,
GST_SECOND);
break;
default:
goto error;
}
break;
default:
goto error;
}
done:
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
res = TRUE;
break;
}
default:
res = GST_BASE_SRC_CLASS (parent_class)->query (basesrc, query);
break;
}
return res;
/* ERROR */
error:
{
GST_DEBUG_OBJECT (src, "query failed");
return FALSE;
}
}
#endif
#if 0
static void
gst_flite_test_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
GstClockTime * start, GstClockTime * end)
{
/* for live sources, sync on the timestamp of the buffer */
if (gst_base_src_is_live (basesrc)) {
GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
/* get duration to calculate end time */
GstClockTime duration = GST_BUFFER_DURATION (buffer);
if (GST_CLOCK_TIME_IS_VALID (duration)) {
*end = timestamp + duration;
}
*start = timestamp;
}
} else {
*start = -1;
*end = -1;
}
}
#endif
cst_voice *register_cmu_us_kal ();
static gboolean
gst_flite_test_src_start (GstBaseSrc * basesrc)
{
GstFliteTestSrc *src = GST_FLITE_TEST_SRC (basesrc);
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src->adapter = gst_adapter_new ();
src->voice = register_cmu_us_kal ();
src->n_channels = 2;
return TRUE;
}
static gboolean
gst_flite_test_src_stop (GstBaseSrc * basesrc)
{
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GstFliteTestSrc *src = GST_FLITE_TEST_SRC (basesrc);
g_object_unref (src->adapter);
return TRUE;
}
static char *
get_channel_name (GstFliteTestSrc * src, int channel)
{
const char *numbers[10] = {
"zero", "one", "two", "three", "four", "five", "six", "seven", "eight",
"nine"
};
const char *names[GST_AUDIO_CHANNEL_POSITION_NUM] = {
"mono", "front left", "front right", "rear center",
"rear left", "rear right", "low frequency effects",
"front center", "front left center", "front right center",
"side left", "side right",
"none"
};
const char *name;
if (src->layout[channel] == GST_AUDIO_CHANNEL_POSITION_INVALID) {
name = "invalid";
} else {
name = names[src->layout[channel]];
}
return g_strdup_printf ("%s, %s", numbers[channel], name);
}
static GstFlowReturn
gst_flite_test_src_create (GstBaseSrc * basesrc, guint64 offset,
guint length, GstBuffer ** buffer)
{
GstFliteTestSrc *src;
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int n_bytes;
src = GST_FLITE_TEST_SRC (basesrc);
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n_bytes = src->n_channels * sizeof (gint16) * src->samples_per_buffer;
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while (gst_adapter_available (src->adapter) < n_bytes) {
GstBuffer *buf;
char *text;
int i;
gint16 *data;
cst_wave *wave;
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gsize size;
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text = get_channel_name (src, src->channel);
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wave = flite_text_to_wave (text, src->voice);
g_free (text);
cst_wave_resample (wave, 48000);
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GST_DEBUG ("type %s, sample_rate %d, num_samples %d, num_channels %d",
wave->type, wave->sample_rate, wave->num_samples, wave->num_channels);
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size = src->n_channels * sizeof (gint16) * wave->num_samples;
buf = gst_buffer_new_and_alloc (size);
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data = gst_buffer_map (buf, NULL, NULL, GST_MAP_WRITE);
memset (data, 0, size);
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for (i = 0; i < wave->num_samples; i++) {
data[i * src->n_channels + src->channel] = wave->samples[i];
}
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gst_buffer_unmap (buf, data, size);
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src->channel++;
if (src->channel == src->n_channels) {
src->channel = 0;
}
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gst_adapter_push (src->adapter, buf);
}
*buffer = gst_adapter_take_buffer (src->adapter, n_bytes);
return GST_FLOW_OK;
}
static void
gst_flite_test_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFliteTestSrc *src = GST_FLITE_TEST_SRC (object);
switch (prop_id) {
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case PROP_SAMPLES_PER_BUFFER:
src->samples_per_buffer = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_flite_test_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstFliteTestSrc *src = GST_FLITE_TEST_SRC (object);
switch (prop_id) {
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case PROP_SAMPLES_PER_BUFFER:
g_value_set_int (value, src->samples_per_buffer);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}