+2006-08-21 Stefan Kost <ensonic@users.sf.net>
+
+ * gst/audiofxgood/.cvsignore:
+ * gst/audiofxgood/Makefile.am:
+ * gst/audiofxgood/audiofx.c: (plugin_init):
+ * gst/audiofxgood/audiopanorama.c: (gst_audio_panorama_base_init),
+ (gst_audio_panorama_class_init), (gst_audio_panorama_init),
+ (gst_audio_panorama_set_property),
+ (gst_audio_panorama_get_property),
+ (gst_audio_panorama_get_unit_size),
+ (gst_audio_panorama_transform_caps), (gst_audio_panorama_set_caps),
+ (gst_audio_panorama_transform_m2s),
+ (gst_audio_panorama_transform_s2s), (gst_audio_panorama_transform):
+ * gst/audiofxgood/audiopanorama.h:
+ resubmit with the desired name *again*
+
2006-08-20 Stefan Kost <ensonic@users.sf.net>
* ext/gdk_pixbuf/pixbufscale.c: (gst_pixbufscale_get_unit_size):
--- /dev/null
+.deps
+.libs
+*.lo
+*.la
+Makefile
+Makefile.in
--- /dev/null
+# plugindir is set in configure
+
+plugin_LTLIBRARIES = libgstaudiofxgood.la
+
+# sources used to compile this plug-in
+libgstaudiofxgood_la_SOURCES = audiofx.c\
+ audiopanorama.c
+
+# flags used to compile this plugin
+libgstaudiofxgood_la_CFLAGS = $(GST_CFLAGS) \
+ $(GST_BASE_CFLAGS) \
+ $(GST_CONTROLLER_CFLAGS)
+libgstaudiofxgood_la_LIBADD = $(GST_LIBS) \
+ $(GST_BASE_LIBS) \
+ $(GST_CONTROLLER_LIBS)
+libgstaudiofxgood_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
+# headers we need but don't want installed
+noinst_HEADERS = audiopanorama.h
--- /dev/null
+/*
+ * GStreamer
+ * Copyright (C) 2006 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/controller/gstcontroller.h>
+
+#include "audiopanorama.h"
+
+/* entry point to initialize the plug-in
+ * initialize the plug-in itself
+ * register the element factories and pad templates
+ * register the features
+ */
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ /* initialize gst controller library */
+ gst_controller_init (NULL, NULL);
+
+ return gst_element_register (plugin, "audiopanorama", GST_RANK_NONE,
+ GST_TYPE_AUDIO_PANORAMA);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "audiofxgood",
+ "Audio effects plugin",
+ plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")
--- /dev/null
+/*
+ * GStreamer
+ * Copyright (C) 2006 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.
+ */
+
+/**
+ * SECTION:gstaudiopanorama
+ * @short_description: audio strereo pan effect
+ *
+ * <refsect2>
+ * Echo effect with controllable effect-ratio, delay-time and feedback.
+ * <title>Example launch line</title>
+ * <para>
+ * <programlisting>
+ * gst-launch audiotestsrc wave=saw ! audiopanorama panorama=-100 ! alsasink
+ * gst-launch filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audiopanorama panorama=-100 ! alsasink
+ * </programlisting>
+ * In the latter example the echo is applied to the input signal of the
+ * soundcard (like a microphone).
+ * </para>
+ * </refsect2>
+ */
+
+/* FIXME: also support 32/64 bit float audio, and maybe 8/24 bit integer */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+#include <gst/controller/gstcontroller.h>
+
+#include "audiopanorama.h"
+
+#define GST_CAT_DEFAULT gst_audio_panorama_debug
+GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
+
+static const GstElementDetails element_details =
+GST_ELEMENT_DETAILS ("AudioPanorama",
+ "Filter/Effect/Audio",
+ "Positions audio streams in the stereo panorama",
+ "Stefan Kost <ensonic@users.sf.net>");
+
+/* Filter signals and args */
+enum
+{
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum
+{
+ PROP_0,
+ PROP_PANORAMA
+};
+
+static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-raw-int, "
+ "rate = (int) [ 1, MAX ], "
+ "channels = (int) [ 1, 2 ], "
+ "endianness = (int) BYTE_ORDER, "
+ "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
+ );
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-raw-int, "
+ "rate = (int) [ 1, MAX ], "
+ "channels = (int) 2, "
+ "endianness = (int) BYTE_ORDER, "
+ "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
+ );
+
+#define DEBUG_INIT(bla) \
+ GST_DEBUG_CATEGORY_INIT (gst_audio_panorama_debug, "audiopanorama", 0, "audiopanorama plugin");
+
+GST_BOILERPLATE_FULL (GstAudioPanorama, gst_audio_panorama, GstBaseTransform,
+ GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
+
+static void gst_audio_panorama_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_audio_panorama_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static gboolean gst_audio_panorama_get_unit_size (GstBaseTransform * base,
+ GstCaps * caps, guint * size);
+static GstCaps *gst_audio_panorama_transform_caps (GstBaseTransform * base,
+ GstPadDirection direction, GstCaps * caps);
+static gboolean gst_audio_panorama_set_caps (GstBaseTransform * base,
+ GstCaps * incaps, GstCaps * outcaps);
+
+static void gst_audio_panorama_transform_m2s (GstAudioPanorama * filter,
+ gint16 * idata, gint16 * odata, guint num_samples);
+static void gst_audio_panorama_transform_s2s (GstAudioPanorama * filter,
+ gint16 * idata, gint16 * odata, guint num_samples);
+
+static GstFlowReturn gst_audio_panorama_transform (GstBaseTransform * base,
+ GstBuffer * inbuf, GstBuffer * outbuf);
+
+/* GObject vmethod implementations */
+
+static void
+gst_audio_panorama_base_init (gpointer klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&sink_template));
+ gst_element_class_set_details (element_class, &element_details);
+}
+
+static void
+gst_audio_panorama_class_init (GstAudioPanoramaClass * klass)
+{
+ GObjectClass *gobject_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gobject_class->set_property = gst_audio_panorama_set_property;
+ gobject_class->get_property = gst_audio_panorama_get_property;
+
+ g_object_class_install_property (gobject_class, PROP_PANORAMA,
+ g_param_spec_int ("panorama", "Panorama",
+ "Position in stereo panorama (-100 left -> 100 right)", -100, 100, 0,
+ G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
+
+ GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size =
+ GST_DEBUG_FUNCPTR (gst_audio_panorama_get_unit_size);
+ GST_BASE_TRANSFORM_CLASS (klass)->transform_caps =
+ GST_DEBUG_FUNCPTR (gst_audio_panorama_transform_caps);
+ GST_BASE_TRANSFORM_CLASS (klass)->set_caps =
+ GST_DEBUG_FUNCPTR (gst_audio_panorama_set_caps);
+ GST_BASE_TRANSFORM_CLASS (klass)->transform =
+ GST_DEBUG_FUNCPTR (gst_audio_panorama_transform);
+}
+
+static void
+gst_audio_panorama_init (GstAudioPanorama * filter,
+ GstAudioPanoramaClass * klass)
+{
+ filter->panorama = 0;
+}
+
+static void
+gst_audio_panorama_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstAudioPanorama *filter = GST_AUDIO_PANORAMA (object);
+
+ switch (prop_id) {
+ case PROP_PANORAMA:
+ filter->panorama = g_value_get_int (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_audio_panorama_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstAudioPanorama *filter = GST_AUDIO_PANORAMA (object);
+
+ switch (prop_id) {
+ case PROP_PANORAMA:
+ g_value_set_int (value, filter->panorama);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/* GstBaseTransform vmethod implementations */
+
+static gboolean
+gst_audio_panorama_get_unit_size (GstBaseTransform * base, GstCaps * caps,
+ guint * size)
+{
+ gint width, channels;
+ GstStructure *structure;
+ gboolean ret;
+
+ g_assert (size);
+
+ /* this works for both float and int */
+ structure = gst_caps_get_structure (caps, 0);
+ ret = gst_structure_get_int (structure, "width", &width);
+ ret &= gst_structure_get_int (structure, "channels", &channels);
+
+ *size = width * channels / 8;
+
+ return ret;
+}
+
+static GstCaps *
+gst_audio_panorama_transform_caps (GstBaseTransform * base,
+ GstPadDirection direction, GstCaps * caps)
+{
+ GstCaps *res;
+ GstStructure *structure;
+
+ /* transform caps gives one single caps so we can just replace
+ * the channel property with our range. */
+ res = gst_caps_copy (caps);
+ structure = gst_caps_get_structure (res, 0);
+ if (direction == GST_PAD_SRC) {
+ GST_INFO ("allow 1-2 channels");
+ gst_structure_set (structure, "channels", GST_TYPE_INT_RANGE, 1, 2, NULL);
+ } else {
+ GST_INFO ("allow 2 channels");
+ gst_structure_set (structure, "channels", G_TYPE_INT, 2, NULL);
+ }
+
+ return res;
+}
+
+static gboolean
+gst_audio_panorama_set_caps (GstBaseTransform * base, GstCaps * incaps,
+ GstCaps * outcaps)
+{
+ GstAudioPanorama *filter = GST_AUDIO_PANORAMA (base);
+ const GstStructure *structure;
+ gboolean ret;
+ gint channels;
+
+ /*GST_INFO ("incaps are %" GST_PTR_FORMAT, incaps); */
+
+ structure = gst_caps_get_structure (incaps, 0);
+ ret = gst_structure_get_int (structure, "channels", &channels);
+ if (!ret)
+ goto no_channels;
+ /* FIXME: also check width and gst_structure_get_name()?int/float */
+
+ GST_DEBUG ("try to process input with %d channels", channels);
+
+ /* set processing function */
+ switch (channels) {
+ case 1:
+ filter->process = gst_audio_panorama_transform_m2s;
+ ret = TRUE;
+ break;
+ case 2:
+ filter->process = gst_audio_panorama_transform_s2s;
+ ret = TRUE;
+ break;
+ default:
+ filter->process = NULL;
+ ret = FALSE;
+ GST_WARNING ("can't process input with %d channels", channels);
+ }
+
+no_channels:
+ GST_DEBUG ("no channels in caps");
+ return ret;
+}
+
+static void
+gst_audio_panorama_transform_m2s (GstAudioPanorama * filter, gint16 * idata,
+ gint16 * odata, guint num_samples)
+{
+ guint i;
+ gdouble val;
+ glong lval, rval;
+ gdouble rpan, lpan;
+
+ /* pan: -100 0 100
+ * lpan: 1.0 0.5 0.0
+ * rpan: 0.0 0.5 1.0
+ */
+ rpan = (gdouble) (filter->panorama + 100) / 200.0;
+ lpan = 1.0 - rpan;
+
+ for (i = 0; i < num_samples; i++) {
+ val = (gdouble) * idata++;
+
+ lval = (glong) (val * lpan);
+ rval = (glong) (val * rpan);
+
+ *odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16);
+ *odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16);
+ }
+}
+
+static void
+gst_audio_panorama_transform_s2s (GstAudioPanorama * filter, gint16 * idata,
+ gint16 * odata, guint num_samples)
+{
+ guint i;
+ glong lval, rval;
+ gdouble lival, rival;
+ gdouble lrpan, llpan, rrpan, rlpan;
+
+ /* pan: -100 0 100
+ * llpan: 1.0 1.0 0.0
+ * lrpan: 1.0 0.0 0.0
+ * rrpan: 0.0 1.0 1.0
+ * rlpan: 0.0 0.0 1.0
+ */
+ if (filter->panorama > 0) {
+ rlpan = (gdouble) filter->panorama / 100.0;
+ llpan = 1.0 - rlpan;
+ lrpan = 0.0;
+ rrpan = 1.0;
+ } else {
+ rrpan = (gdouble) (100 + filter->panorama) / 100.0;
+ lrpan = 1.0 - rrpan;
+ rlpan = 0.0;
+ llpan = 1.0;
+ }
+
+ for (i = 0; i < num_samples; i++) {
+ lival = (gdouble) * idata++;
+ rival = (gdouble) * idata++;
+
+ lval = lival * llpan + rival * lrpan;
+ rval = lival * rlpan + rival * rrpan;
+
+ *odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16);
+ *odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16);
+ }
+}
+
+/* this function does the actual processing
+ */
+static GstFlowReturn
+gst_audio_panorama_transform (GstBaseTransform * base, GstBuffer * inbuf,
+ GstBuffer * outbuf)
+{
+ GstAudioPanorama *filter = GST_AUDIO_PANORAMA (base);
+ guint num_samples = GST_BUFFER_SIZE (outbuf) / (2 * sizeof (gint16));
+
+ if (!gst_buffer_is_writable (outbuf))
+ return GST_FLOW_OK;
+
+ if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (outbuf)))
+ gst_object_sync_values (G_OBJECT (filter), GST_BUFFER_TIMESTAMP (outbuf));
+
+ filter->process (filter, (gint16 *) GST_BUFFER_DATA (inbuf),
+ (gint16 *) GST_BUFFER_DATA (outbuf), num_samples);
+
+ return GST_FLOW_OK;
+}
--- /dev/null
+/*
+ * GStreamer
+ * Copyright (C) 2006 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.
+ */
+
+#ifndef __GST_AUDIO_PANORAMA_H__
+#define __GST_AUDIO_PANORAMA_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUDIO_PANORAMA (gst_audio_panorama_get_type())
+#define GST_AUDIO_PANORAMA(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_PANORAMA,GstAudioPanorama))
+#define GST_IS_AUDIO_PANORAMA(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_PANORAMA))
+#define GST_AUDIO_PANORAMA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_PANORAMA,GstAudioPanoramaClass))
+#define GST_IS_AUDIO_PANORAMA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_PANORAMA))
+#define GST_AUDIO_PANORAMA_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_PANORAMA,GstAudioPanoramaClass))
+
+typedef struct _GstAudioPanorama GstAudioPanorama;
+typedef struct _GstAudioPanoramaClass GstAudioPanoramaClass;
+
+struct _GstAudioPanorama {
+ GstBaseTransform element;
+
+ gint panorama;
+
+ /* < private > */
+ void (*process)(GstAudioPanorama*, gint16*, gint16*, guint);
+};
+
+struct _GstAudioPanoramaClass {
+ GstBaseTransformClass parent_class;
+};
+
+GType gst_audio_panorama_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AUDIO_PANORAMA_H__ */
--- /dev/null
+.deps
+.libs
+*.lo
+*.la
+Makefile
+Makefile.in
--- /dev/null
+# plugindir is set in configure
+
+plugin_LTLIBRARIES = libgstaudiofxgood.la
+
+# sources used to compile this plug-in
+libgstaudiofxgood_la_SOURCES = audiofx.c\
+ audiopanorama.c
+
+# flags used to compile this plugin
+libgstaudiofxgood_la_CFLAGS = $(GST_CFLAGS) \
+ $(GST_BASE_CFLAGS) \
+ $(GST_CONTROLLER_CFLAGS)
+libgstaudiofxgood_la_LIBADD = $(GST_LIBS) \
+ $(GST_BASE_LIBS) \
+ $(GST_CONTROLLER_LIBS)
+libgstaudiofxgood_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
+# headers we need but don't want installed
+noinst_HEADERS = audiopanorama.h
--- /dev/null
+/*
+ * GStreamer
+ * Copyright (C) 2006 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/controller/gstcontroller.h>
+
+#include "audiopanorama.h"
+
+/* entry point to initialize the plug-in
+ * initialize the plug-in itself
+ * register the element factories and pad templates
+ * register the features
+ */
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ /* initialize gst controller library */
+ gst_controller_init (NULL, NULL);
+
+ return gst_element_register (plugin, "audiopanorama", GST_RANK_NONE,
+ GST_TYPE_AUDIO_PANORAMA);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "audiofxgood",
+ "Audio effects plugin",
+ plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")
--- /dev/null
+/*
+ * GStreamer
+ * Copyright (C) 2006 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.
+ */
+
+/**
+ * SECTION:gstaudiopanorama
+ * @short_description: audio strereo pan effect
+ *
+ * <refsect2>
+ * Echo effect with controllable effect-ratio, delay-time and feedback.
+ * <title>Example launch line</title>
+ * <para>
+ * <programlisting>
+ * gst-launch audiotestsrc wave=saw ! audiopanorama panorama=-100 ! alsasink
+ * gst-launch filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audiopanorama panorama=-100 ! alsasink
+ * </programlisting>
+ * In the latter example the echo is applied to the input signal of the
+ * soundcard (like a microphone).
+ * </para>
+ * </refsect2>
+ */
+
+/* FIXME: also support 32/64 bit float audio, and maybe 8/24 bit integer */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+#include <gst/controller/gstcontroller.h>
+
+#include "audiopanorama.h"
+
+#define GST_CAT_DEFAULT gst_audio_panorama_debug
+GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
+
+static const GstElementDetails element_details =
+GST_ELEMENT_DETAILS ("AudioPanorama",
+ "Filter/Effect/Audio",
+ "Positions audio streams in the stereo panorama",
+ "Stefan Kost <ensonic@users.sf.net>");
+
+/* Filter signals and args */
+enum
+{
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum
+{
+ PROP_0,
+ PROP_PANORAMA
+};
+
+static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-raw-int, "
+ "rate = (int) [ 1, MAX ], "
+ "channels = (int) [ 1, 2 ], "
+ "endianness = (int) BYTE_ORDER, "
+ "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
+ );
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-raw-int, "
+ "rate = (int) [ 1, MAX ], "
+ "channels = (int) 2, "
+ "endianness = (int) BYTE_ORDER, "
+ "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
+ );
+
+#define DEBUG_INIT(bla) \
+ GST_DEBUG_CATEGORY_INIT (gst_audio_panorama_debug, "audiopanorama", 0, "audiopanorama plugin");
+
+GST_BOILERPLATE_FULL (GstAudioPanorama, gst_audio_panorama, GstBaseTransform,
+ GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
+
+static void gst_audio_panorama_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_audio_panorama_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static gboolean gst_audio_panorama_get_unit_size (GstBaseTransform * base,
+ GstCaps * caps, guint * size);
+static GstCaps *gst_audio_panorama_transform_caps (GstBaseTransform * base,
+ GstPadDirection direction, GstCaps * caps);
+static gboolean gst_audio_panorama_set_caps (GstBaseTransform * base,
+ GstCaps * incaps, GstCaps * outcaps);
+
+static void gst_audio_panorama_transform_m2s (GstAudioPanorama * filter,
+ gint16 * idata, gint16 * odata, guint num_samples);
+static void gst_audio_panorama_transform_s2s (GstAudioPanorama * filter,
+ gint16 * idata, gint16 * odata, guint num_samples);
+
+static GstFlowReturn gst_audio_panorama_transform (GstBaseTransform * base,
+ GstBuffer * inbuf, GstBuffer * outbuf);
+
+/* GObject vmethod implementations */
+
+static void
+gst_audio_panorama_base_init (gpointer klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&sink_template));
+ gst_element_class_set_details (element_class, &element_details);
+}
+
+static void
+gst_audio_panorama_class_init (GstAudioPanoramaClass * klass)
+{
+ GObjectClass *gobject_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gobject_class->set_property = gst_audio_panorama_set_property;
+ gobject_class->get_property = gst_audio_panorama_get_property;
+
+ g_object_class_install_property (gobject_class, PROP_PANORAMA,
+ g_param_spec_int ("panorama", "Panorama",
+ "Position in stereo panorama (-100 left -> 100 right)", -100, 100, 0,
+ G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
+
+ GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size =
+ GST_DEBUG_FUNCPTR (gst_audio_panorama_get_unit_size);
+ GST_BASE_TRANSFORM_CLASS (klass)->transform_caps =
+ GST_DEBUG_FUNCPTR (gst_audio_panorama_transform_caps);
+ GST_BASE_TRANSFORM_CLASS (klass)->set_caps =
+ GST_DEBUG_FUNCPTR (gst_audio_panorama_set_caps);
+ GST_BASE_TRANSFORM_CLASS (klass)->transform =
+ GST_DEBUG_FUNCPTR (gst_audio_panorama_transform);
+}
+
+static void
+gst_audio_panorama_init (GstAudioPanorama * filter,
+ GstAudioPanoramaClass * klass)
+{
+ filter->panorama = 0;
+}
+
+static void
+gst_audio_panorama_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstAudioPanorama *filter = GST_AUDIO_PANORAMA (object);
+
+ switch (prop_id) {
+ case PROP_PANORAMA:
+ filter->panorama = g_value_get_int (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_audio_panorama_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstAudioPanorama *filter = GST_AUDIO_PANORAMA (object);
+
+ switch (prop_id) {
+ case PROP_PANORAMA:
+ g_value_set_int (value, filter->panorama);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/* GstBaseTransform vmethod implementations */
+
+static gboolean
+gst_audio_panorama_get_unit_size (GstBaseTransform * base, GstCaps * caps,
+ guint * size)
+{
+ gint width, channels;
+ GstStructure *structure;
+ gboolean ret;
+
+ g_assert (size);
+
+ /* this works for both float and int */
+ structure = gst_caps_get_structure (caps, 0);
+ ret = gst_structure_get_int (structure, "width", &width);
+ ret &= gst_structure_get_int (structure, "channels", &channels);
+
+ *size = width * channels / 8;
+
+ return ret;
+}
+
+static GstCaps *
+gst_audio_panorama_transform_caps (GstBaseTransform * base,
+ GstPadDirection direction, GstCaps * caps)
+{
+ GstCaps *res;
+ GstStructure *structure;
+
+ /* transform caps gives one single caps so we can just replace
+ * the channel property with our range. */
+ res = gst_caps_copy (caps);
+ structure = gst_caps_get_structure (res, 0);
+ if (direction == GST_PAD_SRC) {
+ GST_INFO ("allow 1-2 channels");
+ gst_structure_set (structure, "channels", GST_TYPE_INT_RANGE, 1, 2, NULL);
+ } else {
+ GST_INFO ("allow 2 channels");
+ gst_structure_set (structure, "channels", G_TYPE_INT, 2, NULL);
+ }
+
+ return res;
+}
+
+static gboolean
+gst_audio_panorama_set_caps (GstBaseTransform * base, GstCaps * incaps,
+ GstCaps * outcaps)
+{
+ GstAudioPanorama *filter = GST_AUDIO_PANORAMA (base);
+ const GstStructure *structure;
+ gboolean ret;
+ gint channels;
+
+ /*GST_INFO ("incaps are %" GST_PTR_FORMAT, incaps); */
+
+ structure = gst_caps_get_structure (incaps, 0);
+ ret = gst_structure_get_int (structure, "channels", &channels);
+ if (!ret)
+ goto no_channels;
+ /* FIXME: also check width and gst_structure_get_name()?int/float */
+
+ GST_DEBUG ("try to process input with %d channels", channels);
+
+ /* set processing function */
+ switch (channels) {
+ case 1:
+ filter->process = gst_audio_panorama_transform_m2s;
+ ret = TRUE;
+ break;
+ case 2:
+ filter->process = gst_audio_panorama_transform_s2s;
+ ret = TRUE;
+ break;
+ default:
+ filter->process = NULL;
+ ret = FALSE;
+ GST_WARNING ("can't process input with %d channels", channels);
+ }
+
+no_channels:
+ GST_DEBUG ("no channels in caps");
+ return ret;
+}
+
+static void
+gst_audio_panorama_transform_m2s (GstAudioPanorama * filter, gint16 * idata,
+ gint16 * odata, guint num_samples)
+{
+ guint i;
+ gdouble val;
+ glong lval, rval;
+ gdouble rpan, lpan;
+
+ /* pan: -100 0 100
+ * lpan: 1.0 0.5 0.0
+ * rpan: 0.0 0.5 1.0
+ */
+ rpan = (gdouble) (filter->panorama + 100) / 200.0;
+ lpan = 1.0 - rpan;
+
+ for (i = 0; i < num_samples; i++) {
+ val = (gdouble) * idata++;
+
+ lval = (glong) (val * lpan);
+ rval = (glong) (val * rpan);
+
+ *odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16);
+ *odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16);
+ }
+}
+
+static void
+gst_audio_panorama_transform_s2s (GstAudioPanorama * filter, gint16 * idata,
+ gint16 * odata, guint num_samples)
+{
+ guint i;
+ glong lval, rval;
+ gdouble lival, rival;
+ gdouble lrpan, llpan, rrpan, rlpan;
+
+ /* pan: -100 0 100
+ * llpan: 1.0 1.0 0.0
+ * lrpan: 1.0 0.0 0.0
+ * rrpan: 0.0 1.0 1.0
+ * rlpan: 0.0 0.0 1.0
+ */
+ if (filter->panorama > 0) {
+ rlpan = (gdouble) filter->panorama / 100.0;
+ llpan = 1.0 - rlpan;
+ lrpan = 0.0;
+ rrpan = 1.0;
+ } else {
+ rrpan = (gdouble) (100 + filter->panorama) / 100.0;
+ lrpan = 1.0 - rrpan;
+ rlpan = 0.0;
+ llpan = 1.0;
+ }
+
+ for (i = 0; i < num_samples; i++) {
+ lival = (gdouble) * idata++;
+ rival = (gdouble) * idata++;
+
+ lval = lival * llpan + rival * lrpan;
+ rval = lival * rlpan + rival * rrpan;
+
+ *odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16);
+ *odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16);
+ }
+}
+
+/* this function does the actual processing
+ */
+static GstFlowReturn
+gst_audio_panorama_transform (GstBaseTransform * base, GstBuffer * inbuf,
+ GstBuffer * outbuf)
+{
+ GstAudioPanorama *filter = GST_AUDIO_PANORAMA (base);
+ guint num_samples = GST_BUFFER_SIZE (outbuf) / (2 * sizeof (gint16));
+
+ if (!gst_buffer_is_writable (outbuf))
+ return GST_FLOW_OK;
+
+ if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (outbuf)))
+ gst_object_sync_values (G_OBJECT (filter), GST_BUFFER_TIMESTAMP (outbuf));
+
+ filter->process (filter, (gint16 *) GST_BUFFER_DATA (inbuf),
+ (gint16 *) GST_BUFFER_DATA (outbuf), num_samples);
+
+ return GST_FLOW_OK;
+}
--- /dev/null
+/*
+ * GStreamer
+ * Copyright (C) 2006 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.
+ */
+
+#ifndef __GST_AUDIO_PANORAMA_H__
+#define __GST_AUDIO_PANORAMA_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUDIO_PANORAMA (gst_audio_panorama_get_type())
+#define GST_AUDIO_PANORAMA(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_PANORAMA,GstAudioPanorama))
+#define GST_IS_AUDIO_PANORAMA(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_PANORAMA))
+#define GST_AUDIO_PANORAMA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_PANORAMA,GstAudioPanoramaClass))
+#define GST_IS_AUDIO_PANORAMA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_PANORAMA))
+#define GST_AUDIO_PANORAMA_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_PANORAMA,GstAudioPanoramaClass))
+
+typedef struct _GstAudioPanorama GstAudioPanorama;
+typedef struct _GstAudioPanoramaClass GstAudioPanoramaClass;
+
+struct _GstAudioPanorama {
+ GstBaseTransform element;
+
+ gint panorama;
+
+ /* < private > */
+ void (*process)(GstAudioPanorama*, gint16*, gint16*, guint);
+};
+
+struct _GstAudioPanoramaClass {
+ GstBaseTransformClass parent_class;
+};
+
+GType gst_audio_panorama_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AUDIO_PANORAMA_H__ */
projects / platform / upstream / gst-plugins-good.git / commitdiff