gstpipefilter.c \
gsttee.c \
gstaggregator.c \
- gstsinesrc.c \
$(GSTHTTPSRC)
noinst_HEADERS = \
gstfdsink.h \
gstpipefilter.h \
gsttee.h \
- gstaggregator.h \
- gstsinesrc.h
-
+ gstaggregator.h
CFLAGS += -O2 -Wall
LDFLAGS += -lm
#include "gstfdsrc.h"
#include "gstmultidisksrc.h"
#include "gstpipefilter.h"
-#include "gstsinesrc.h"
#include "gsttee.h"
#include "gstaggregator.h"
{ "fdsrc", gst_fdsrc_get_type, &gst_fdsrc_details, NULL },
{ "multidisksrc", gst_multidisksrc_get_type, &gst_multidisksrc_details, NULL },
{ "pipefilter", gst_pipefilter_get_type, &gst_pipefilter_details, NULL },
- { "sinesrc", gst_sinesrc_get_type, &gst_sinesrc_details, gst_sinesrc_factory_init },
{ "tee", gst_tee_get_type, &gst_tee_details, gst_tee_factory_init },
{ "aggregator", gst_aggregator_get_type, &gst_aggregator_details, gst_aggregator_factory_init },
+++ /dev/null
-/* GStreamer
- * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
- * 2000 Wim Taymans <wtay@chello.be>
- * 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
- *
- * gstsinesrc.c:
- *
- * 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.
- */
-
-#include <math.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <gstsinesrc.h>
-
-
-GstElementDetails gst_sinesrc_details = {
- "Sine-wave src",
- "Source/Audio",
- "Create a sine wave of a given frequency and volume",
- VERSION,
- "Erik Walthinsen <omega@cse.ogi.edu>",
- "(C) 1999",
-};
-
-
-/* SineSrc signals and args */
-enum {
- /* FILL ME */
- LAST_SIGNAL
-};
-
-enum {
- ARG_0,
- ARG_FORMAT,
- ARG_SAMPLERATE,
- ARG_TABLESIZE,
- ARG_BUFFER_SIZE,
-};
-
-// FIXME: this is not core business...
-GST_PADTEMPLATE_FACTORY (sinesrc_src_factory,
- "src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_CAPS_NEW (
- "sinesrc_src",
- "audio/raw",
- "format", GST_PROPS_STRING ("int"),
- "law", GST_PROPS_INT (0),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- "signed", GST_PROPS_BOOLEAN (TRUE),
- "width", GST_PROPS_INT (16),
- "depth", GST_PROPS_INT (16),
- "rate", GST_PROPS_INT_RANGE (8000, 48000),
- "channels", GST_PROPS_INT (1)
- )
-);
-
-static void gst_sinesrc_class_init (GstSineSrcClass *klass);
-static void gst_sinesrc_init (GstSineSrc *src);
-static GstPadNegotiateReturn gst_sinesrc_negotiate (GstPad *pad, GstCaps **caps, gpointer *data);
-static void gst_sinesrc_set_property (GObject *object, guint prop_id,
- const GValue *value, GParamSpec *pspec);
-static void gst_sinesrc_get_property (GObject *object, guint prop_id,
- GValue *value, GParamSpec *pspec);
-//static gboolean gst_sinesrc_change_state(GstElement *element,
-// GstElementState state);
-//static void gst_sinesrc_close_audio(GstSineSrc *src);
-//static gboolean gst_sinesrc_open_audio(GstSineSrc *src);
-
-static void gst_sinesrc_update_freq(GValue *value, gpointer data);
-static void gst_sinesrc_populate_sinetable (GstSineSrc *src);
-static inline void gst_sinesrc_update_table_inc (GstSineSrc *src);
-static void gst_sinesrc_force_caps (GstSineSrc *src);
-
-static GstBuffer* gst_sinesrc_get (GstPad *pad);
-
-static GstElementClass *parent_class = NULL;
-//static guint gst_sinesrc_signals[LAST_SIGNAL] = { 0 };
-
-GType
-gst_sinesrc_get_type (void)
-{
- static GType sinesrc_type = 0;
-
- if (!sinesrc_type) {
- static const GTypeInfo sinesrc_info = {
- sizeof(GstSineSrcClass),
- NULL,
- NULL,
- (GClassInitFunc)gst_sinesrc_class_init,
- NULL,
- NULL,
- sizeof(GstSineSrc),
- 0,
- (GInstanceInitFunc)gst_sinesrc_init,
- };
- sinesrc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstSineSrc", &sinesrc_info, 0);
- }
- return sinesrc_type;
-}
-
-static void
-gst_sinesrc_class_init (GstSineSrcClass *klass)
-{
- GObjectClass *gobject_class;
- GstElementClass *gstelement_class;
-
- gobject_class = (GObjectClass*)klass;
- gstelement_class = (GstElementClass*)klass;
-
- parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
-
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FORMAT,
- g_param_spec_int("format","format","format",
- G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SAMPLERATE,
- g_param_spec_int("samplerate","samplerate","samplerate",
- G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TABLESIZE,
- g_param_spec_int("tablesize","tablesize","tablesize",
- G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BUFFER_SIZE,
- g_param_spec_int("buffersize","buffersize","buffersize",
- 0, G_MAXINT, 1024, G_PARAM_READWRITE));
-
- gobject_class->set_property = gst_sinesrc_set_property;
- gobject_class->get_property = gst_sinesrc_get_property;
-
-// gstelement_class->change_state = gst_sinesrc_change_state;
-}
-
-static void
-gst_sinesrc_init (GstSineSrc *src)
-{
- GstElement *element = GST_ELEMENT(src);
- GstDParamManager *dpman;
- GstDParamSpec *spec;
-
- src->srcpad = gst_pad_new_from_template (
- GST_PADTEMPLATE_GET (sinesrc_src_factory), "src");
- gst_element_add_pad(GST_ELEMENT(src), src->srcpad);
- gst_pad_set_negotiate_function (src->srcpad, gst_sinesrc_negotiate);
-
- gst_pad_set_get_function(src->srcpad, gst_sinesrc_get);
-
- src->format = 16;
- src->samplerate = 44100;
-
- src->newcaps = TRUE;
-
- src->table_pos = 0.0;
- src->table_size = 1024;
- src->buffer_size=1024;
- src->timestamp=0LL;
-
- src->seq = 0;
-
- dpman = gst_dpman_new ("sinesrc_dpman", GST_ELEMENT(src));
-
- gst_dpman_add_required_dparam_callback (dpman, "freq", G_TYPE_FLOAT, gst_sinesrc_update_freq, src);
- spec = gst_dpman_get_dparam_spec (dpman, "freq");
- g_value_set_float(spec->min_val, 10.0);
- g_value_set_float(spec->max_val, 10000.0);
- g_value_set_float(spec->default_val, 350.0);
- spec->unit_name = "frequency";
- spec->is_log = TRUE;
-
- gst_dpman_add_required_dparam_direct (dpman, "volume", G_TYPE_FLOAT, &(src->volume));
- spec = gst_dpman_get_dparam_spec (dpman, "volume");
- g_value_set_float(spec->min_val, 0.0);
- g_value_set_float(spec->max_val, 1.0);
- g_value_set_float(spec->default_val, 0.8);
- spec->unit_name = "scalar";
-
- src->volume = 0.0;
-
- gst_dpman_set_rate_change_pad(dpman, src->srcpad);
-
- GST_ELEMENT_DPARAM_MANAGER(element) = dpman;
-
- gst_sinesrc_populate_sinetable(src);
- gst_sinesrc_update_table_inc(src);
-
-}
-
-static GstPadNegotiateReturn
-gst_sinesrc_negotiate (GstPad *pad, GstCaps **caps, gpointer *data)
-{
- GstSineSrc *src;
-
- if (*caps) {
- g_return_val_if_fail (pad != NULL, GST_PAD_NEGOTIATE_FAIL);
- src = GST_SINESRC(gst_pad_get_parent (pad));
- src->samplerate = gst_caps_get_int (*caps, "rate");
- gst_sinesrc_update_table_inc(src);
- return GST_PAD_NEGOTIATE_AGREE;
- }
-
- return GST_PAD_NEGOTIATE_FAIL;
-}
-
-static GstBuffer *
-gst_sinesrc_get(GstPad *pad)
-{
- GstSineSrc *src;
- GstBuffer *buf;
- GstDParamManager *dpman;
-
- gint16 *samples;
- gint i=0, frame_countdown;
-
- g_return_val_if_fail (pad != NULL, NULL);
- src = GST_SINESRC(gst_pad_get_parent (pad));
-
- buf = gst_buffer_new();
- g_return_val_if_fail (buf, NULL);
- samples = g_new(gint16, src->buffer_size);
- GST_BUFFER_DATA(buf) = (gpointer) samples;
- GST_BUFFER_SIZE(buf) = 2 * src->buffer_size;
-
- dpman = GST_ELEMENT_DPARAM_MANAGER(GST_ELEMENT(src));
- frame_countdown = GST_DPMAN_PREPROCESS(dpman, src->buffer_size, src->timestamp);
-
- src->timestamp += (gint64)src->buffer_size * 1000000000LL / (gint64)src->samplerate;
-
- while(GST_DPMAN_PROCESS_COUNTDOWN(dpman, frame_countdown, i)) {
-
- src->table_lookup = (gint)(src->table_pos);
- src->table_lookup_next = src->table_lookup + 1;
- src->table_interp = src->table_pos - src->table_lookup;
-
- // wrap the array lookups if we're out of bounds
- if (src->table_lookup_next >= src->table_size){
- src->table_lookup_next -= src->table_size;
- if (src->table_lookup >= src->table_size){
- src->table_lookup -= src->table_size;
- src->table_pos -= src->table_size;
- }
- }
-
- src->table_pos += src->table_inc;
-
- //no interpolation
- //samples[i] = src->table_data[src->table_lookup]
- // * src->volume * 32767.0;
-
- //linear interpolation
- samples[i++] = ((src->table_interp
- *(src->table_data[src->table_lookup_next]
- -src->table_data[src->table_lookup]
- )
- )+src->table_data[src->table_lookup]
- )* src->volume * 32767.0;
- }
-
- if (src->newcaps) {
- gst_sinesrc_force_caps(src);
- }
- return buf;
-}
-
-static void
-gst_sinesrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
-{
- GstSineSrc *src;
-
- /* it's not null if we got it, but it might not be ours */
- g_return_if_fail(GST_IS_SINESRC(object));
- src = GST_SINESRC(object);
-
- switch (prop_id) {
- case ARG_FORMAT:
- src->format = g_value_get_int (value);
- src->newcaps=TRUE;
- break;
- case ARG_SAMPLERATE:
- src->samplerate = g_value_get_int (value);
- src->newcaps=TRUE;
- gst_sinesrc_update_table_inc(src);
- break;
- case ARG_TABLESIZE:
- src->table_size = g_value_get_int (value);
- gst_sinesrc_populate_sinetable(src);
- gst_sinesrc_update_table_inc(src);
- break;
- case ARG_BUFFER_SIZE:
- src->buffer_size = g_value_get_int (value);
- break;
- default:
- break;
- }
-}
-
-static void
-gst_sinesrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
-{
- GstSineSrc *src;
-
- /* it's not null if we got it, but it might not be ours */
- g_return_if_fail(GST_IS_SINESRC(object));
- src = GST_SINESRC(object);
-
- switch (prop_id) {
- case ARG_FORMAT:
- g_value_set_int (value, src->format);
- break;
- case ARG_SAMPLERATE:
- g_value_set_int (value, src->samplerate);
- break;
- case ARG_TABLESIZE:
- g_value_set_int (value, src->table_size);
- break;
- case ARG_BUFFER_SIZE:
- g_value_set_int (value, src->buffer_size);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-/*
-static gboolean gst_sinesrc_change_state(GstElement *element,
- GstElementState state) {
- g_return_if_fail(GST_IS_SINESRC(element));
-
- switch (state) {
- case GST_STATE_RUNNING:
- if (!gst_sinesrc_open_audio(GST_SINESRC(element)))
- return FALSE;
- break;
- case ~GST_STATE_RUNNING:
- gst_sinesrc_close_audio(GST_SINESRC(element));
- break;
- default:
- break;
- }
-
- if (GST_ELEMENT_CLASS(parent_class)->change_state)
- return GST_ELEMENT_CLASS(parent_class)->change_state(element,state);
- return TRUE;
-}
-*/
-
-static void
-gst_sinesrc_populate_sinetable (GstSineSrc *src)
-{
- gint i;
- gdouble pi2scaled = M_PI * 2 / src->table_size;
- gfloat *table = g_new(gfloat, src->table_size);
-
- for(i=0 ; i < src->table_size ; i++){
- table[i] = (gfloat)sin(i * pi2scaled);
- }
-
- g_free(src->table_data);
- src->table_data = table;
-}
-
-static void
-gst_sinesrc_update_freq(GValue *value, gpointer data)
-{
- GstSineSrc *src = (GstSineSrc*)data;
- g_return_if_fail(GST_IS_SINESRC(src));
-
- src->freq = g_value_get_float(value);
- src->table_inc = src->table_size * src->freq / src->samplerate;
-
- //GST_DEBUG(GST_CAT_PARAMS, "freq %f\n", src->freq);
-}
-
-static inline void
-gst_sinesrc_update_table_inc (GstSineSrc *src)
-{
- src->table_inc = src->table_size * src->freq / src->samplerate;
-}
-
-static void
-gst_sinesrc_force_caps(GstSineSrc *src) {
- GstCaps *caps;
-
- if (!src->newcaps)
- return;
-
- src->newcaps=FALSE;
-
- caps = gst_caps_new (
- "sinesrc_src_caps",
- "audio/raw",
- gst_props_new (
- "format", GST_PROPS_STRING ("int"),
- "law", GST_PROPS_INT (0),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- "signed", GST_PROPS_BOOLEAN (TRUE),
- "width", GST_PROPS_INT (16),
- "depth", GST_PROPS_INT (16),
- "rate", GST_PROPS_INT (src->samplerate),
- "channels", GST_PROPS_INT (1),
- NULL
- )
- );
-
- gst_pad_set_caps (src->srcpad, caps);
-}
-
-gboolean
-gst_sinesrc_factory_init (GstElementFactory *factory)
-{
- gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (sinesrc_src_factory));
-
- return TRUE;
-}
+++ /dev/null
-/* GStreamer
- * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
- * 2000 Wim Taymans <wtay@chello.be>
- *
- * gstsinesrc.h:
- *
- * 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.
- */
-
-
-#ifndef __GST_SINESRC_H__
-#define __GST_SINESRC_H__
-
-
-#include <config.h>
-#include <gst/gst.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-
-GstElementDetails gst_sinesrc_details;
-
-
-#define GST_TYPE_SINESRC \
- (gst_sinesrc_get_type())
-#define GST_SINESRC(obj) \
- (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SINESRC,GstSineSrc))
-#define GST_SINESRC_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SINESRC,GstSineSrcClass))
-#define GST_IS_SINESRC(obj) \
- (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SINESRC))
-#define GST_IS_SINESRC_CLASS(obj) \
- (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SINESRC))
-
-typedef struct _GstSineSrc GstSineSrc;
-typedef struct _GstSineSrcClass GstSineSrcClass;
-
-struct _GstSineSrc {
- GstElement element;
-
- /* pads */
- GstPad *srcpad;
-
- /* parameters */
- gfloat volume;
- gfloat freq;
-
- /* lookup table data */
- gfloat *table_data;
- gdouble table_pos;
- gdouble table_inc;
- gint table_size;
- gdouble table_interp;
- gint table_lookup;
- gint table_lookup_next;
-
- /* audio parameters */
- gint format;
- gint samplerate;
-
- gint buffer_size;
- gulong seq;
-
- gint64 timestamp;
-
- gboolean newcaps;
-
-};
-
-struct _GstSineSrcClass {
- GstElementClass parent_class;
-};
-
-GType gst_sinesrc_get_type(void);
-gboolean gst_sinesrc_factory_init (GstElementFactory *factory);
-
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-
-
-#endif /* __GST_SINESRC_H__ */
gstpipefilter.c \
gsttee.c \
gstaggregator.c \
- gstsinesrc.c \
$(GSTHTTPSRC)
noinst_HEADERS = \
gstfdsink.h \
gstpipefilter.h \
gsttee.h \
- gstaggregator.h \
- gstsinesrc.h
-
+ gstaggregator.h
CFLAGS += -O2 -Wall
LDFLAGS += -lm
#include "gstfdsrc.h"
#include "gstmultidisksrc.h"
#include "gstpipefilter.h"
-#include "gstsinesrc.h"
#include "gsttee.h"
#include "gstaggregator.h"
{ "fdsrc", gst_fdsrc_get_type, &gst_fdsrc_details, NULL },
{ "multidisksrc", gst_multidisksrc_get_type, &gst_multidisksrc_details, NULL },
{ "pipefilter", gst_pipefilter_get_type, &gst_pipefilter_details, NULL },
- { "sinesrc", gst_sinesrc_get_type, &gst_sinesrc_details, gst_sinesrc_factory_init },
{ "tee", gst_tee_get_type, &gst_tee_details, gst_tee_factory_init },
{ "aggregator", gst_aggregator_get_type, &gst_aggregator_details, gst_aggregator_factory_init },
+++ /dev/null
-/* GStreamer
- * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
- * 2000 Wim Taymans <wtay@chello.be>
- * 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
- *
- * gstsinesrc.c:
- *
- * 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.
- */
-
-#include <math.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <gstsinesrc.h>
-
-
-GstElementDetails gst_sinesrc_details = {
- "Sine-wave src",
- "Source/Audio",
- "Create a sine wave of a given frequency and volume",
- VERSION,
- "Erik Walthinsen <omega@cse.ogi.edu>",
- "(C) 1999",
-};
-
-
-/* SineSrc signals and args */
-enum {
- /* FILL ME */
- LAST_SIGNAL
-};
-
-enum {
- ARG_0,
- ARG_FORMAT,
- ARG_SAMPLERATE,
- ARG_TABLESIZE,
- ARG_BUFFER_SIZE,
-};
-
-// FIXME: this is not core business...
-GST_PADTEMPLATE_FACTORY (sinesrc_src_factory,
- "src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_CAPS_NEW (
- "sinesrc_src",
- "audio/raw",
- "format", GST_PROPS_STRING ("int"),
- "law", GST_PROPS_INT (0),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- "signed", GST_PROPS_BOOLEAN (TRUE),
- "width", GST_PROPS_INT (16),
- "depth", GST_PROPS_INT (16),
- "rate", GST_PROPS_INT_RANGE (8000, 48000),
- "channels", GST_PROPS_INT (1)
- )
-);
-
-static void gst_sinesrc_class_init (GstSineSrcClass *klass);
-static void gst_sinesrc_init (GstSineSrc *src);
-static GstPadNegotiateReturn gst_sinesrc_negotiate (GstPad *pad, GstCaps **caps, gpointer *data);
-static void gst_sinesrc_set_property (GObject *object, guint prop_id,
- const GValue *value, GParamSpec *pspec);
-static void gst_sinesrc_get_property (GObject *object, guint prop_id,
- GValue *value, GParamSpec *pspec);
-//static gboolean gst_sinesrc_change_state(GstElement *element,
-// GstElementState state);
-//static void gst_sinesrc_close_audio(GstSineSrc *src);
-//static gboolean gst_sinesrc_open_audio(GstSineSrc *src);
-
-static void gst_sinesrc_update_freq(GValue *value, gpointer data);
-static void gst_sinesrc_populate_sinetable (GstSineSrc *src);
-static inline void gst_sinesrc_update_table_inc (GstSineSrc *src);
-static void gst_sinesrc_force_caps (GstSineSrc *src);
-
-static GstBuffer* gst_sinesrc_get (GstPad *pad);
-
-static GstElementClass *parent_class = NULL;
-//static guint gst_sinesrc_signals[LAST_SIGNAL] = { 0 };
-
-GType
-gst_sinesrc_get_type (void)
-{
- static GType sinesrc_type = 0;
-
- if (!sinesrc_type) {
- static const GTypeInfo sinesrc_info = {
- sizeof(GstSineSrcClass),
- NULL,
- NULL,
- (GClassInitFunc)gst_sinesrc_class_init,
- NULL,
- NULL,
- sizeof(GstSineSrc),
- 0,
- (GInstanceInitFunc)gst_sinesrc_init,
- };
- sinesrc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstSineSrc", &sinesrc_info, 0);
- }
- return sinesrc_type;
-}
-
-static void
-gst_sinesrc_class_init (GstSineSrcClass *klass)
-{
- GObjectClass *gobject_class;
- GstElementClass *gstelement_class;
-
- gobject_class = (GObjectClass*)klass;
- gstelement_class = (GstElementClass*)klass;
-
- parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
-
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FORMAT,
- g_param_spec_int("format","format","format",
- G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SAMPLERATE,
- g_param_spec_int("samplerate","samplerate","samplerate",
- G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TABLESIZE,
- g_param_spec_int("tablesize","tablesize","tablesize",
- G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BUFFER_SIZE,
- g_param_spec_int("buffersize","buffersize","buffersize",
- 0, G_MAXINT, 1024, G_PARAM_READWRITE));
-
- gobject_class->set_property = gst_sinesrc_set_property;
- gobject_class->get_property = gst_sinesrc_get_property;
-
-// gstelement_class->change_state = gst_sinesrc_change_state;
-}
-
-static void
-gst_sinesrc_init (GstSineSrc *src)
-{
- GstElement *element = GST_ELEMENT(src);
- GstDParamManager *dpman;
- GstDParamSpec *spec;
-
- src->srcpad = gst_pad_new_from_template (
- GST_PADTEMPLATE_GET (sinesrc_src_factory), "src");
- gst_element_add_pad(GST_ELEMENT(src), src->srcpad);
- gst_pad_set_negotiate_function (src->srcpad, gst_sinesrc_negotiate);
-
- gst_pad_set_get_function(src->srcpad, gst_sinesrc_get);
-
- src->format = 16;
- src->samplerate = 44100;
-
- src->newcaps = TRUE;
-
- src->table_pos = 0.0;
- src->table_size = 1024;
- src->buffer_size=1024;
- src->timestamp=0LL;
-
- src->seq = 0;
-
- dpman = gst_dpman_new ("sinesrc_dpman", GST_ELEMENT(src));
-
- gst_dpman_add_required_dparam_callback (dpman, "freq", G_TYPE_FLOAT, gst_sinesrc_update_freq, src);
- spec = gst_dpman_get_dparam_spec (dpman, "freq");
- g_value_set_float(spec->min_val, 10.0);
- g_value_set_float(spec->max_val, 10000.0);
- g_value_set_float(spec->default_val, 350.0);
- spec->unit_name = "frequency";
- spec->is_log = TRUE;
-
- gst_dpman_add_required_dparam_direct (dpman, "volume", G_TYPE_FLOAT, &(src->volume));
- spec = gst_dpman_get_dparam_spec (dpman, "volume");
- g_value_set_float(spec->min_val, 0.0);
- g_value_set_float(spec->max_val, 1.0);
- g_value_set_float(spec->default_val, 0.8);
- spec->unit_name = "scalar";
-
- src->volume = 0.0;
-
- gst_dpman_set_rate_change_pad(dpman, src->srcpad);
-
- GST_ELEMENT_DPARAM_MANAGER(element) = dpman;
-
- gst_sinesrc_populate_sinetable(src);
- gst_sinesrc_update_table_inc(src);
-
-}
-
-static GstPadNegotiateReturn
-gst_sinesrc_negotiate (GstPad *pad, GstCaps **caps, gpointer *data)
-{
- GstSineSrc *src;
-
- if (*caps) {
- g_return_val_if_fail (pad != NULL, GST_PAD_NEGOTIATE_FAIL);
- src = GST_SINESRC(gst_pad_get_parent (pad));
- src->samplerate = gst_caps_get_int (*caps, "rate");
- gst_sinesrc_update_table_inc(src);
- return GST_PAD_NEGOTIATE_AGREE;
- }
-
- return GST_PAD_NEGOTIATE_FAIL;
-}
-
-static GstBuffer *
-gst_sinesrc_get(GstPad *pad)
-{
- GstSineSrc *src;
- GstBuffer *buf;
- GstDParamManager *dpman;
-
- gint16 *samples;
- gint i=0, frame_countdown;
-
- g_return_val_if_fail (pad != NULL, NULL);
- src = GST_SINESRC(gst_pad_get_parent (pad));
-
- buf = gst_buffer_new();
- g_return_val_if_fail (buf, NULL);
- samples = g_new(gint16, src->buffer_size);
- GST_BUFFER_DATA(buf) = (gpointer) samples;
- GST_BUFFER_SIZE(buf) = 2 * src->buffer_size;
-
- dpman = GST_ELEMENT_DPARAM_MANAGER(GST_ELEMENT(src));
- frame_countdown = GST_DPMAN_PREPROCESS(dpman, src->buffer_size, src->timestamp);
-
- src->timestamp += (gint64)src->buffer_size * 1000000000LL / (gint64)src->samplerate;
-
- while(GST_DPMAN_PROCESS_COUNTDOWN(dpman, frame_countdown, i)) {
-
- src->table_lookup = (gint)(src->table_pos);
- src->table_lookup_next = src->table_lookup + 1;
- src->table_interp = src->table_pos - src->table_lookup;
-
- // wrap the array lookups if we're out of bounds
- if (src->table_lookup_next >= src->table_size){
- src->table_lookup_next -= src->table_size;
- if (src->table_lookup >= src->table_size){
- src->table_lookup -= src->table_size;
- src->table_pos -= src->table_size;
- }
- }
-
- src->table_pos += src->table_inc;
-
- //no interpolation
- //samples[i] = src->table_data[src->table_lookup]
- // * src->volume * 32767.0;
-
- //linear interpolation
- samples[i++] = ((src->table_interp
- *(src->table_data[src->table_lookup_next]
- -src->table_data[src->table_lookup]
- )
- )+src->table_data[src->table_lookup]
- )* src->volume * 32767.0;
- }
-
- if (src->newcaps) {
- gst_sinesrc_force_caps(src);
- }
- return buf;
-}
-
-static void
-gst_sinesrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
-{
- GstSineSrc *src;
-
- /* it's not null if we got it, but it might not be ours */
- g_return_if_fail(GST_IS_SINESRC(object));
- src = GST_SINESRC(object);
-
- switch (prop_id) {
- case ARG_FORMAT:
- src->format = g_value_get_int (value);
- src->newcaps=TRUE;
- break;
- case ARG_SAMPLERATE:
- src->samplerate = g_value_get_int (value);
- src->newcaps=TRUE;
- gst_sinesrc_update_table_inc(src);
- break;
- case ARG_TABLESIZE:
- src->table_size = g_value_get_int (value);
- gst_sinesrc_populate_sinetable(src);
- gst_sinesrc_update_table_inc(src);
- break;
- case ARG_BUFFER_SIZE:
- src->buffer_size = g_value_get_int (value);
- break;
- default:
- break;
- }
-}
-
-static void
-gst_sinesrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
-{
- GstSineSrc *src;
-
- /* it's not null if we got it, but it might not be ours */
- g_return_if_fail(GST_IS_SINESRC(object));
- src = GST_SINESRC(object);
-
- switch (prop_id) {
- case ARG_FORMAT:
- g_value_set_int (value, src->format);
- break;
- case ARG_SAMPLERATE:
- g_value_set_int (value, src->samplerate);
- break;
- case ARG_TABLESIZE:
- g_value_set_int (value, src->table_size);
- break;
- case ARG_BUFFER_SIZE:
- g_value_set_int (value, src->buffer_size);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-/*
-static gboolean gst_sinesrc_change_state(GstElement *element,
- GstElementState state) {
- g_return_if_fail(GST_IS_SINESRC(element));
-
- switch (state) {
- case GST_STATE_RUNNING:
- if (!gst_sinesrc_open_audio(GST_SINESRC(element)))
- return FALSE;
- break;
- case ~GST_STATE_RUNNING:
- gst_sinesrc_close_audio(GST_SINESRC(element));
- break;
- default:
- break;
- }
-
- if (GST_ELEMENT_CLASS(parent_class)->change_state)
- return GST_ELEMENT_CLASS(parent_class)->change_state(element,state);
- return TRUE;
-}
-*/
-
-static void
-gst_sinesrc_populate_sinetable (GstSineSrc *src)
-{
- gint i;
- gdouble pi2scaled = M_PI * 2 / src->table_size;
- gfloat *table = g_new(gfloat, src->table_size);
-
- for(i=0 ; i < src->table_size ; i++){
- table[i] = (gfloat)sin(i * pi2scaled);
- }
-
- g_free(src->table_data);
- src->table_data = table;
-}
-
-static void
-gst_sinesrc_update_freq(GValue *value, gpointer data)
-{
- GstSineSrc *src = (GstSineSrc*)data;
- g_return_if_fail(GST_IS_SINESRC(src));
-
- src->freq = g_value_get_float(value);
- src->table_inc = src->table_size * src->freq / src->samplerate;
-
- //GST_DEBUG(GST_CAT_PARAMS, "freq %f\n", src->freq);
-}
-
-static inline void
-gst_sinesrc_update_table_inc (GstSineSrc *src)
-{
- src->table_inc = src->table_size * src->freq / src->samplerate;
-}
-
-static void
-gst_sinesrc_force_caps(GstSineSrc *src) {
- GstCaps *caps;
-
- if (!src->newcaps)
- return;
-
- src->newcaps=FALSE;
-
- caps = gst_caps_new (
- "sinesrc_src_caps",
- "audio/raw",
- gst_props_new (
- "format", GST_PROPS_STRING ("int"),
- "law", GST_PROPS_INT (0),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- "signed", GST_PROPS_BOOLEAN (TRUE),
- "width", GST_PROPS_INT (16),
- "depth", GST_PROPS_INT (16),
- "rate", GST_PROPS_INT (src->samplerate),
- "channels", GST_PROPS_INT (1),
- NULL
- )
- );
-
- gst_pad_set_caps (src->srcpad, caps);
-}
-
-gboolean
-gst_sinesrc_factory_init (GstElementFactory *factory)
-{
- gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (sinesrc_src_factory));
-
- return TRUE;
-}
+++ /dev/null
-/* GStreamer
- * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
- * 2000 Wim Taymans <wtay@chello.be>
- *
- * gstsinesrc.h:
- *
- * 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.
- */
-
-
-#ifndef __GST_SINESRC_H__
-#define __GST_SINESRC_H__
-
-
-#include <config.h>
-#include <gst/gst.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-
-GstElementDetails gst_sinesrc_details;
-
-
-#define GST_TYPE_SINESRC \
- (gst_sinesrc_get_type())
-#define GST_SINESRC(obj) \
- (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SINESRC,GstSineSrc))
-#define GST_SINESRC_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SINESRC,GstSineSrcClass))
-#define GST_IS_SINESRC(obj) \
- (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SINESRC))
-#define GST_IS_SINESRC_CLASS(obj) \
- (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SINESRC))
-
-typedef struct _GstSineSrc GstSineSrc;
-typedef struct _GstSineSrcClass GstSineSrcClass;
-
-struct _GstSineSrc {
- GstElement element;
-
- /* pads */
- GstPad *srcpad;
-
- /* parameters */
- gfloat volume;
- gfloat freq;
-
- /* lookup table data */
- gfloat *table_data;
- gdouble table_pos;
- gdouble table_inc;
- gint table_size;
- gdouble table_interp;
- gint table_lookup;
- gint table_lookup_next;
-
- /* audio parameters */
- gint format;
- gint samplerate;
-
- gint buffer_size;
- gulong seq;
-
- gint64 timestamp;
-
- gboolean newcaps;
-
-};
-
-struct _GstSineSrcClass {
- GstElementClass parent_class;
-};
-
-GType gst_sinesrc_get_type(void);
-gboolean gst_sinesrc_factory_init (GstElementFactory *factory);
-
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-
-
-#endif /* __GST_SINESRC_H__ */
projects / platform / upstream / gstreamer.git / commitdiff