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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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adding sine stuff
Original commit message from CVS: adding sine stuff
This commit is contained in:
Thomas Vander Stichele
parent
92f5a8ac6c
commit
d48e19cb1a
4 changed files with 574 additions and 0 deletions
8
gst/Makefile.am
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8
gst/Makefile.am
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@ -0,0 +1,8 @@
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if USE_SINE
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SINE_DIR=sine
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else
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SINE_DIR=
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endif
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SUBDIRS=$(SINE_DIR)
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DIST_SUBDIRS=sine
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8
gst/sine/Makefile.am
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8
gst/sine/Makefile.am
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@ -0,0 +1,8 @@
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plugindir = $(libdir)/gst
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plugin_LTLIBRARIES = libgstsinesrc.la
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libgstsinesrc_la_SOURCES = gstsinesrc.c
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libgstsinesrc_la_CFLAGS = $(GST_CFLAGS)
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noinst_HEADERS = gstsinesrc.h
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460
gst/sine/gstsinesrc.c
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460
gst/sine/gstsinesrc.c
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@ -0,0 +1,460 @@
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/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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* 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
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*
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* gstsinesrc.c:
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libs/control/gstcontrol.h>
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#include <gstsinesrc.h>
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GstElementDetails gst_sinesrc_details = {
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"Sine-wave src",
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"Source/Audio",
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"Create a sine wave of a given frequency and volume",
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VERSION,
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"Erik Walthinsen <omega@cse.ogi.edu>",
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"(C) 1999",
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};
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/* SineSrc signals and args */
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enum {
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0,
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ARG_FORMAT,
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ARG_SAMPLERATE,
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ARG_TABLESIZE,
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ARG_BUFFER_SIZE,
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ARG_FREQ,
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ARG_VOLUME,
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};
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// FIXME: this is not core business...
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GST_PADTEMPLATE_FACTORY (sinesrc_src_factory,
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"src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"sinesrc_src",
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"audio/raw",
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"format", GST_PROPS_STRING ("int"),
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"law", GST_PROPS_INT (0),
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"endianness", GST_PROPS_INT (G_BYTE_ORDER),
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"signed", GST_PROPS_BOOLEAN (TRUE),
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"width", GST_PROPS_INT (16),
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"depth", GST_PROPS_INT (16),
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"rate", GST_PROPS_INT_RANGE (8000, 48000),
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"channels", GST_PROPS_INT (1)
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)
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);
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static void gst_sinesrc_class_init (GstSineSrcClass *klass);
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static void gst_sinesrc_init (GstSineSrc *src);
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static void gst_sinesrc_newcaps (GstPad *pad, GstCaps *caps);
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static void gst_sinesrc_set_property (GObject *object, guint prop_id,
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const GValue *value, GParamSpec *pspec);
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static void gst_sinesrc_get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec);
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//static gboolean gst_sinesrc_change_state(GstElement *element,
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// GstElementState state);
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//static void gst_sinesrc_close_audio(GstSineSrc *src);
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//static gboolean gst_sinesrc_open_audio(GstSineSrc *src);
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static void gst_sinesrc_update_freq(GValue *value, gpointer data);
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static void gst_sinesrc_populate_sinetable (GstSineSrc *src);
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static inline void gst_sinesrc_update_table_inc (GstSineSrc *src);
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static void gst_sinesrc_force_caps (GstSineSrc *src);
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static GstBuffer* gst_sinesrc_get (GstPad *pad);
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static GstElementClass *parent_class = NULL;
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//static guint gst_sinesrc_signals[LAST_SIGNAL] = { 0 };
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GType
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gst_sinesrc_get_type (void)
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{
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static GType sinesrc_type = 0;
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if (!sinesrc_type) {
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static const GTypeInfo sinesrc_info = {
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sizeof(GstSineSrcClass),
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NULL,
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NULL,
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(GClassInitFunc)gst_sinesrc_class_init,
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NULL,
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NULL,
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sizeof(GstSineSrc),
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0,
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(GInstanceInitFunc)gst_sinesrc_init,
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};
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sinesrc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstSineSrc", &sinesrc_info, 0);
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}
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return sinesrc_type;
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}
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static void
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gst_sinesrc_class_init (GstSineSrcClass *klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass*)klass;
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gstelement_class = (GstElementClass*)klass;
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parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FORMAT,
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g_param_spec_int("format","format","format",
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G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SAMPLERATE,
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g_param_spec_int("samplerate","samplerate","samplerate",
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G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TABLESIZE,
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g_param_spec_int("tablesize","tablesize","tablesize",
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G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BUFFER_SIZE,
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g_param_spec_int("buffersize","buffersize","buffersize",
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0, G_MAXINT, 1024, G_PARAM_READWRITE));
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FREQ,
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g_param_spec_float("freq","freq","freq",
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0.0, 20000.0, 440.0, G_PARAM_READWRITE));
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FREQ,
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g_param_spec_float("volume","volume","volume",
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0.0, 1.0, 0.8, G_PARAM_READWRITE));
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gobject_class->set_property = gst_sinesrc_set_property;
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gobject_class->get_property = gst_sinesrc_get_property;
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// gstelement_class->change_state = gst_sinesrc_change_state;
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}
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static void
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gst_sinesrc_init (GstSineSrc *src)
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{
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GstDParamSpec *spec;
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src->srcpad = gst_pad_new_from_template (
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GST_PADTEMPLATE_GET (sinesrc_src_factory), "src");
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gst_element_add_pad(GST_ELEMENT(src), src->srcpad);
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gst_pad_set_newcaps_function (src->srcpad, gst_sinesrc_newcaps);
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gst_pad_set_get_function(src->srcpad, gst_sinesrc_get);
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src->format = 16;
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src->samplerate = 44100;
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src->newcaps = TRUE;
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src->table_pos = 0.0;
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src->table_size = 1024;
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src->buffer_size=1024;
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src->timestamp=0LL;
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src->seq = 0;
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src->dpman = gst_dpman_new ("sinesrc_dpman", GST_ELEMENT(src));
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gst_dpman_add_required_dparam_callback (src->dpman, "freq", G_TYPE_FLOAT, gst_sinesrc_update_freq, src);
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spec = gst_dpman_get_dparam_spec (src->dpman, "freq");
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g_value_set_float(spec->min_val, 10.0);
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g_value_set_float(spec->max_val, 10000.0);
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g_value_set_float(spec->default_val, 350.0);
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spec->unit_name = "frequency";
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spec->is_log = TRUE;
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gst_dpman_add_required_dparam_direct (src->dpman, "volume", G_TYPE_FLOAT, &(src->volume));
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spec = gst_dpman_get_dparam_spec (src->dpman, "volume");
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g_value_set_float(spec->min_val, 0.0);
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g_value_set_float(spec->max_val, 1.0);
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g_value_set_float(spec->default_val, 0.8);
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spec->unit_name = "scalar";
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src->volume = 0.0;
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gst_dpman_set_rate_change_pad(src->dpman, src->srcpad);
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gst_sinesrc_populate_sinetable(src);
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gst_sinesrc_update_table_inc(src);
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}
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static void
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gst_sinesrc_newcaps (GstPad *pad, GstCaps *caps)
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{
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GstSineSrc *src;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (caps != NULL);
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src = GST_SINESRC(gst_pad_get_parent (pad));
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src->samplerate = gst_caps_get_int (caps, "rate");
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gst_sinesrc_update_table_inc(src);
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}
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static GstBuffer *
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gst_sinesrc_get(GstPad *pad)
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{
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GstSineSrc *src;
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GstBuffer *buf;
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gint16 *samples;
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gint i=0, frame_countdown;
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g_return_val_if_fail (pad != NULL, NULL);
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src = GST_SINESRC(gst_pad_get_parent (pad));
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buf = gst_buffer_new();
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g_return_val_if_fail (buf, NULL);
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samples = g_new(gint16, src->buffer_size);
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GST_BUFFER_DATA(buf) = (gpointer) samples;
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GST_BUFFER_SIZE(buf) = 2 * src->buffer_size;
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frame_countdown = GST_DPMAN_PREPROCESS(src->dpman, src->buffer_size, src->timestamp);
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src->timestamp += (gint64)src->buffer_size * 1000000000LL / (gint64)src->samplerate;
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while(GST_DPMAN_PROCESS_COUNTDOWN(src->dpman, frame_countdown, i)) {
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src->table_lookup = (gint)(src->table_pos);
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src->table_lookup_next = src->table_lookup + 1;
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src->table_interp = src->table_pos - src->table_lookup;
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// wrap the array lookups if we're out of bounds
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if (src->table_lookup_next >= src->table_size){
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src->table_lookup_next -= src->table_size;
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if (src->table_lookup >= src->table_size){
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src->table_lookup -= src->table_size;
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src->table_pos -= src->table_size;
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}
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}
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src->table_pos += src->table_inc;
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//no interpolation
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//samples[i] = src->table_data[src->table_lookup]
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// * src->volume * 32767.0;
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//linear interpolation
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samples[i++] = ((src->table_interp
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*(src->table_data[src->table_lookup_next]
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-src->table_data[src->table_lookup]
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)
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)+src->table_data[src->table_lookup]
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)* src->volume * 32767.0;
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}
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if (src->newcaps) {
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gst_sinesrc_force_caps(src);
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}
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return buf;
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}
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static void
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gst_sinesrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstSineSrc *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_SINESRC(object));
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src = GST_SINESRC(object);
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switch (prop_id) {
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case ARG_FORMAT:
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src->format = g_value_get_int (value);
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src->newcaps=TRUE;
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break;
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case ARG_SAMPLERATE:
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src->samplerate = g_value_get_int (value);
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src->newcaps=TRUE;
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gst_sinesrc_update_table_inc(src);
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break;
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case ARG_TABLESIZE:
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src->table_size = g_value_get_int (value);
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gst_sinesrc_populate_sinetable(src);
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gst_sinesrc_update_table_inc(src);
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break;
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case ARG_BUFFER_SIZE:
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src->buffer_size = g_value_get_int (value);
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break;
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case ARG_FREQ:
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//gst_dpman_handle_set_prop(src->dpman, "freq", value);
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break;
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case ARG_VOLUME:
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//gst_dpman_handle_set_prop(src->dpman, "volume", value);
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break;
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default:
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break;
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}
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}
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static void
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gst_sinesrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstSineSrc *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_SINESRC(object));
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src = GST_SINESRC(object);
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switch (prop_id) {
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case ARG_FORMAT:
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g_value_set_int (value, src->format);
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break;
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case ARG_SAMPLERATE:
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g_value_set_int (value, src->samplerate);
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break;
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case ARG_TABLESIZE:
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g_value_set_int (value, src->table_size);
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break;
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case ARG_BUFFER_SIZE:
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g_value_set_int (value, src->buffer_size);
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break;
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case ARG_FREQ:
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g_value_set_float (value, src->freq);
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break;
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case ARG_VOLUME:
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g_value_set_float (value, src->volume);
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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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/*
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static gboolean gst_sinesrc_change_state(GstElement *element,
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GstElementState state) {
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g_return_if_fail(GST_IS_SINESRC(element));
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switch (state) {
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case GST_STATE_RUNNING:
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if (!gst_sinesrc_open_audio(GST_SINESRC(element)))
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return FALSE;
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break;
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case ~GST_STATE_RUNNING:
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gst_sinesrc_close_audio(GST_SINESRC(element));
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break;
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default:
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break;
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}
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if (GST_ELEMENT_CLASS(parent_class)->change_state)
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return GST_ELEMENT_CLASS(parent_class)->change_state(element,state);
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return TRUE;
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}
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*/
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static void
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gst_sinesrc_populate_sinetable (GstSineSrc *src)
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{
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gint i;
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gdouble pi2scaled = M_PI * 2 / src->table_size;
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gfloat *table = g_new(gfloat, src->table_size);
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for(i=0 ; i < src->table_size ; i++){
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table[i] = (gfloat)sin(i * pi2scaled);
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}
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g_free(src->table_data);
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src->table_data = table;
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}
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static void
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gst_sinesrc_update_freq(GValue *value, gpointer data)
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{
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GstSineSrc *src = (GstSineSrc*)data;
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g_return_if_fail(GST_IS_SINESRC(src));
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src->freq = g_value_get_float(value);
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src->table_inc = src->table_size * src->freq / src->samplerate;
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//GST_DEBUG(GST_CAT_PARAMS, "freq %f\n", src->freq);
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}
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static inline void
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gst_sinesrc_update_table_inc (GstSineSrc *src)
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{
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src->table_inc = src->table_size * src->freq / src->samplerate;
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}
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static void
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gst_sinesrc_force_caps(GstSineSrc *src) {
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GstCaps *caps;
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if (!src->newcaps)
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return;
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src->newcaps=FALSE;
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caps = gst_caps_new (
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"sinesrc_src_caps",
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"audio/raw",
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gst_props_new (
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"format", GST_PROPS_STRING ("int"),
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"law", GST_PROPS_INT (0),
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"endianness", GST_PROPS_INT (G_BYTE_ORDER),
|
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"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);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
plugin_init (GModule *module, GstPlugin *plugin)
|
||||
{
|
||||
GstElementFactory *factory;
|
||||
|
||||
factory = gst_elementfactory_new("sinesrc",GST_TYPE_SINESRC,
|
||||
&gst_sinesrc_details);
|
||||
g_return_val_if_fail(factory != NULL, FALSE);
|
||||
|
||||
gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (sinesrc_src_factory));
|
||||
|
||||
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
|
||||
|
||||
/* load dparam support library */
|
||||
if (!gst_library_load ("gstcontrol"))
|
||||
{
|
||||
gst_info ("sinesrc: could not load support library: 'gstcontrol'\n");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
GstPluginDesc plugin_desc = {
|
||||
GST_VERSION_MAJOR,
|
||||
GST_VERSION_MINOR,
|
||||
"sinesrc",
|
||||
plugin_init
|
||||
};
|
||||
98
gst/sine/gstsinesrc.h
Normal file
98
gst/sine/gstsinesrc.h
Normal file
|
|
@ -0,0 +1,98 @@
|
|||
/* 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;
|
||||
GstDParamManager *dpman;
|
||||
|
||||
/* 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__ */
|
||||
Loading…
Reference in a new issue