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+/* Demo Recorder for MAEMO 5
+* Copyright (C) 2010 Dru Moore <usr@dru-id.co.uk>
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License version 2,
+* or (at your option) any later version, as published by the Free
+* Software Foundation
+*
+* This program 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 General Public License for more details
+*
+* You should have received a copy of the GNU General Public
+* License along with this program; if not, write to the
+* Free Software Foundation, Inc.,
+* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+namespace IdWorks {
+
+public class AudioCaptureMonitor : Gst.Pipeline {
+ //Gst.Pipeline pipeline;
+ //Gst.Element src;
+ //Gst.Element converter;
+ //Gst.Element pregain;
+ //Gst.Element dynamics;
+ //Gst.Element volume;
+ InputBin input;
+ Gst.Element level;
+ Gst.Element monitor;
+ Gst.Element sink_element;
+ uint watch_id;
+
+ public AudioCaptureMonitor(string name) {
+ this.name = name;
+ construct_pipeline(SettingsStructures.MonitorSettings());
+ }
+ public AudioCaptureMonitor.with_settings(string name, SettingsStructures.MonitorSettings settings) {
+ this.name = name;
+ construct_pipeline(settings);
+ }
+
+ private void construct_pipeline(SettingsStructures.MonitorSettings settings) {
+ /*
+ this.src = Gst.ElementFactory.make("pulsesrc", "capture");
+ this.src.set_property("device", "source.hw0");
+ this.add(this.src);
+
+ this.converter = Gst.ElementFactory.make("audioconvert", "converter");
+ this.add(this.converter);
+
+ this.pregain = Gst.ElementFactory.make("volume", "pregain");
+ this.pregain.set_property("volume", 1);
+ this.add(this.pregain);
+
+ this.dynamics = Gst.ElementFactory.make("audiodynamic", "dynamics");
+ this.add(this.dynamics);
+ this.dynamics.set_property("mode", "compressor"); // compressor or expander
+ this.dynamics.set_property("characteristics", "hard-knee"); // hard-knee or soft-knee
+ this.dynamics.set_property("threshold", 1.0); // [0, 1]
+ this.dynamics.set_property("ratio", 1.0); // >= 0
+
+ this.volume = Gst.ElementFactory.make("volume", "volume");
+ this.volume.set_property("volume", 1);
+ this.add(this.volume);
+ */
+
+ this.input = new InputBin.with_settings("input", settings.input);
+ this.add(this.input);
+
+ this.level = Gst.ElementFactory.make("level", "level");
+ this.level.set_property("interval", 50 * Time.Nanoseconds.MILLISECOND);
+ this.level.set_property("peak-ttl", 2 * Time.Nanoseconds.SECOND);
+ this.add(this.level);
+
+ this.monitor = Gst.ElementFactory.make("volume", "monitor");
+ this.monitor.set_property("volume", 1);
+ this.monitor.set_property("mute", true);
+ this.add(this.monitor);
+
+ this.sink_element = Gst.ElementFactory.make("autoaudiosink", "fakesink");
+ this.add(this.sink_element);
+
+ this.level.set_property("message", true);
+
+ this.sink_element.set_property("sync", true);
+
+
+ //Gst.Caps caps = Gst.Caps.from_string ("audio/x-raw-int,channels=2");
+ //this.converter.link_filtered(level, caps);
+ /*
+ this.src.link(converter);
+ this.converter.link(pregain);
+ this.pregain.link(dynamics);
+ this.dynamics.link(volume);
+ this.volume.link(level);
+ */
+ this.input.link(level);
+ this.level.link(monitor);
+ this.monitor.link(sink_element);
+
+ Gst.Bus bus = this.get_bus();
+
+ watch_id = bus.add_watch(message_handler);
+
+ }
+
+ public void set_dynamics(string mode, string characteristics, double threshold, double ratio) {
+ this.input.set_dynamics(mode, characteristics, threshold, ratio);
+ /*
+ this.dynamics.set_property("mode", mode); // compressor or expander
+ this.dynamics.set_property("characteristics", characteristics); // hard-knee or soft-knee
+ this.dynamics.set_property("threshold", threshold); // [0, 1]
+ this.dynamics.set_property("ratio", ratio); // >= 0
+ */
+ }
+ public void set_dynamics_mode(string mode) {
+ this.input.set_dynamics_mode(mode);
+ //this.dynamics.set_property("mode", mode); // compressor or expander
+ }
+ public void set_dynamics_characteristics(string characteristics) {
+ this.input.set_dynamics_characteristics(characteristics);
+ //this.dynamics.set_property("characteristics", characteristics); // hard-knee or soft-knee
+ }
+ public void set_dynamics_threshold(double threshold) {
+ this.input.set_dynamics_threshold(threshold);
+ //this.dynamics.set_property("threshold", threshold); // [0, 1]
+ }
+ public void set_dynamics_ratio(double ratio) {
+ this.input.set_dynamics_ratio(ratio);
+ //this.dynamics.set_property("ratio", ratio); // >= 0
+ }
+
+ public void set_source(string name) {
+ this.input.set_source(name);
+ }
+ public string get_source() {
+ return this.input.get_source();
+ }
+
+ public void set_pregain(double val)
+ requires (val >= 0.0 && val <= 10.0) {
+ this.input.set_pregain(val);
+ //this.pregain.set_property("volume", val);
+ }
+ public double get_pregain()
+ ensures (result >= 0.0 && result <= 10.0) {
+ return this.input.get_pregain();
+ /*GLib.Value val = 0;
+ this.pregain.get_property("volume", ref val);
+ return val.get_double();*/
+ }
+
+ public void set_volume(double val)
+ requires (val >= 0.0 && val <= 10.0) {
+ this.input.set_volume(val);
+ //this.volume.set_property("volume", val);
+ }
+ public double get_volume()
+ ensures (result >= 0.0 && result <= 10.0) {
+ return this.input.get_volume();
+ /*GLib.Value val = 0;
+ this.volume.get_property("volume", ref val);
+ return val.get_double();*/
+ }
+
+ public void set_mute(bool val) {
+ this.input.set_mute(val);
+ //this.volume.set_property("mute", val);
+ }
+ public bool get_mute() {
+ return this.input.get_mute();
+ /*GLib.Value val = 0;
+ this.volume.get_property("mute", ref val);
+ return val.get_boolean();*/
+ }
+
+ public void set_monitor_mute(bool val) {
+ this.monitor.set_property("mute", val);
+ }
+ public bool get_monitor_mute() {
+ GLib.Value val = 0;
+ this.monitor.get_property("mute", ref val);
+ return val.get_boolean();
+ }
+
+ public void play() {
+ this.set_state(Gst.State.PLAYING);
+ }
+
+ public void pause() {
+ this.set_state(Gst.State.READY);
+ }
+
+ public void stop() {
+ this.set_state(Gst.State.READY);
+ }
+
+ public signal void update_level(int channels, int channel, double rms_dB, double peak_dB, double decay_dB, double rms);
+
+ public bool message_handler(Gst.Bus bus, Gst.Message message) {
+ if (Gst.MessageType.ELEMENT == message.type) {
+ Gst.Structure s = message.get_structure();
+ string name = s.get_name();
+
+ if ("level" == name) {
+ int channels;
+ double rms_dB, peak_dB, decay_dB;
+ double rms;
+ Gst.Value list;
+ Gst.Value value;
+ int i;
+
+ list = s.get_value("rms"); // any value gives us the channelsby list size
+ channels = 0;
+ channels = (int) list.list_get_size();
+
+ for (i = 0; i < channels; ++i) {
+ list = s.get_value ("rms");
+ value = list.list_get_value (i);
+ rms_dB = value.get_double ();
+ list = s.get_value ("peak");
+ value = list.list_get_value (i);
+ peak_dB = value.get_double ();
+ list = s.get_value ("decay");
+ value = list.list_get_value (i);
+ decay_dB = value.get_double ();
+ /* converting from dB to normal gives us a value between 0.0 and 1.0 */
+ rms = Math.pow (10, rms_dB / 20);
+ update_level(channels, i, rms_dB, peak_dB, decay_dB, rms);
+ }
+ }
+ }
+ return true;
+ }
+
+}
+
+}
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projects / demorecorder / blobdiff