/* -*- c-basic-offset: 2 -*- * GStreamer * Copyright (C) 1999-2001 Erik Walthinsen * * 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 #include #include #include "gstvolume.h" static GstElementDetails volume_details = { "Volume", "Filter/Effect", "Set volume on audio/raw streams", VERSION, "Andy Wingo ", "(C) 2001" }; /* Filter signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_SILENT, ARG_MUTED, ARG_VOLUME }; static GstPadTemplate* volume_sink_factory (void) { static GstPadTemplate *template = NULL; if (!template) { template = gst_padtemplate_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, gst_caps_append(gst_caps_new ("sink_int", "audio/raw", GST_AUDIO_INT_PAD_TEMPLATE_PROPS), gst_caps_new ("sink_float", "audio/raw", GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS)), NULL); } return template; } static GstPadTemplate* volume_src_factory (void) { static GstPadTemplate *template = NULL; if (!template) template = gst_padtemplate_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, gst_caps_append (gst_caps_new ("src_float", "audio/raw", GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS), gst_caps_new ("src_int", "audio/raw", GST_AUDIO_INT_PAD_TEMPLATE_PROPS)), NULL); return template; } static void volume_class_init (GstVolumeClass *klass); static void volume_init (GstVolume *filter); static void volume_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void volume_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static gboolean volume_parse_caps (GstVolume *filter, GstCaps *caps); static void volume_chain (GstPad *pad, GstBuffer *buf); static void inline volume_fast_float_chain (gfloat* data, guint numsamples, GstVolume *filter); static void inline volume_fast_8bit_chain (gint8* data, guint numsamples, GstVolume *filter); static void inline volume_fast_16bit_chain (gint16* data, guint numsamples, GstVolume *filter); static GstElementClass *parent_class = NULL; /*static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */ static GstBufferPool* volume_get_bufferpool (GstPad *pad) { GstVolume *filter; filter = GST_VOLUME (gst_pad_get_parent (pad)); return gst_pad_get_bufferpool (filter->srcpad); } static GstPadConnectReturn volume_connect (GstPad *pad, GstCaps *caps) { GstVolume *filter; GstPad *otherpad; filter = GST_VOLUME (gst_pad_get_parent (pad)); g_return_val_if_fail (filter != NULL, GST_PAD_CONNECT_REFUSED); g_return_val_if_fail (GST_IS_VOLUME (filter), GST_PAD_CONNECT_REFUSED); otherpad = (pad == filter->srcpad ? filter->sinkpad : filter->srcpad); if (GST_CAPS_IS_FIXED (caps)) { if (!volume_parse_caps (filter, caps) || !gst_pad_try_set_caps (otherpad, caps)) return GST_PAD_CONNECT_REFUSED; return GST_PAD_CONNECT_OK; } return GST_PAD_CONNECT_DELAYED; } static gboolean volume_parse_caps (GstVolume *filter, GstCaps *caps) { const gchar *format; g_return_val_if_fail(filter!=NULL,-1); g_return_val_if_fail(caps!=NULL,-1); format = gst_caps_get_string(caps, "format"); filter->rate = gst_caps_get_int (caps, "rate"); filter->channels = gst_caps_get_int (caps, "channels"); if (strcmp(format, "int")==0) { filter->format = GST_VOLUME_FORMAT_INT; filter->width = gst_caps_get_int (caps, "width"); filter->depth = gst_caps_get_int (caps, "depth"); filter->law = gst_caps_get_int (caps, "law"); filter->endianness = gst_caps_get_int (caps, "endianness"); filter->is_signed = gst_caps_get_int (caps, "signed"); if (!filter->silent) { g_print ("Volume : channels %d, rate %d\n", filter->channels, filter->rate); g_print ("Volume : format int, bit width %d, endianness %d, signed %s\n", filter->width, filter->endianness, filter->is_signed ? "yes" : "no"); } } else if (strcmp(format, "float")==0) { filter->format = GST_VOLUME_FORMAT_FLOAT; filter->layout = gst_caps_get_string(caps, "layout"); filter->intercept = gst_caps_get_float(caps, "intercept"); filter->slope = gst_caps_get_float(caps, "slope"); if (!filter->silent) { g_print ("Volume : channels %d, rate %d\n", filter->channels, filter->rate); g_print ("Volume : format float, layout %s, intercept %f, slope %f\n", filter->layout, filter->intercept, filter->slope); } } else { return FALSE; } return TRUE; } GType gst_volume_get_type(void) { static GType volume_type = 0; if (!volume_type) { static const GTypeInfo volume_info = { sizeof(GstVolumeClass), NULL, NULL, (GClassInitFunc)volume_class_init, NULL, NULL, sizeof(GstVolume), 0, (GInstanceInitFunc)volume_init, }; volume_type = g_type_register_static(GST_TYPE_ELEMENT, "GstVolume", &volume_info, 0); } return volume_type; } static void volume_class_init (GstVolumeClass *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_SILENT, g_param_spec_boolean("silent","silent","silent", TRUE,G_PARAM_READWRITE)); /* CHECKME */ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MUTED, g_param_spec_boolean("muted","muted","muted", FALSE,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VOLUME, g_param_spec_float("volume","volume","volume", -4.0,4.0,1.0,G_PARAM_READWRITE)); gobject_class->set_property = volume_set_property; gobject_class->get_property = volume_get_property; } static void volume_init (GstVolume *filter) { filter->sinkpad = gst_pad_new_from_template(volume_sink_factory (),"sink"); gst_pad_set_connect_function(filter->sinkpad,volume_connect); gst_pad_set_bufferpool_function(filter->sinkpad,volume_get_bufferpool); filter->srcpad = gst_pad_new_from_template(volume_src_factory (),"src"); gst_pad_set_connect_function(filter->srcpad,volume_connect); gst_element_add_pad(GST_ELEMENT(filter),filter->sinkpad); gst_element_add_pad(GST_ELEMENT(filter),filter->srcpad); gst_pad_set_chain_function(filter->sinkpad,volume_chain); filter->silent = FALSE; filter->muted = FALSE; filter->volume_i = 8192; filter->volume_f = 1.0; } static void volume_chain (GstPad *pad, GstBuffer *buf) { GstVolume *filter; gint16 *int_data; gfloat *float_data; g_return_if_fail(pad != NULL); g_return_if_fail(GST_IS_PAD(pad)); g_return_if_fail(buf != NULL); filter = GST_VOLUME(GST_OBJECT_PARENT (pad)); g_return_if_fail(filter != NULL); g_return_if_fail(GST_IS_VOLUME(filter)); switch (filter->format) { case GST_VOLUME_FORMAT_INT: int_data = (gint16 *)GST_BUFFER_DATA(buf); switch (filter->width) { case 16: volume_fast_16bit_chain(int_data,GST_BUFFER_SIZE(buf)/2, filter); break; case 8: volume_fast_8bit_chain((gint8*)int_data,GST_BUFFER_SIZE(buf), filter); break; } break; case GST_VOLUME_FORMAT_FLOAT: float_data = (gfloat *)GST_BUFFER_DATA(buf); volume_fast_float_chain(float_data,GST_BUFFER_SIZE(buf)/sizeof(float), filter); break; } gst_pad_push(filter->srcpad,buf); } static void inline volume_fast_float_chain(gfloat* data, guint num_samples, GstVolume *filter) #include "filter.func" static void inline volume_fast_16bit_chain(gint16* data, guint num_samples, GstVolume *filter) #include "filter.func" static void inline volume_fast_8bit_chain(gint8* data, guint num_samples, GstVolume *filter) #include "filter.func" static void volume_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GstVolume *filter; /* it's not null if we got it, but it might not be ours */ g_return_if_fail(GST_IS_VOLUME(object)); filter = GST_VOLUME(object); switch (prop_id) { case ARG_SILENT: filter->silent = g_value_get_boolean (value); break; case ARG_MUTED: filter->muted = g_value_get_boolean (value); break; case ARG_VOLUME: filter->volume_f = g_value_get_float (value); filter->volume_i = filter->volume_f*8192; break; default: break; } } static void volume_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GstVolume *filter; /* it's not null if we got it, but it might not be ours */ g_return_if_fail(GST_IS_VOLUME(object)); filter = GST_VOLUME(object); switch (prop_id) { case ARG_SILENT: g_value_set_boolean (value, filter->silent); break; case ARG_MUTED: g_value_set_boolean (value, filter->muted); break; case ARG_VOLUME: g_value_set_float (value, filter->volume_f); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean plugin_init (GModule *module, GstPlugin *plugin) { GstElementFactory *factory; factory = gst_elementfactory_new("volume",GST_TYPE_VOLUME, &volume_details); g_return_val_if_fail(factory != NULL, FALSE); gst_elementfactory_add_padtemplate (factory, volume_src_factory ()); gst_elementfactory_add_padtemplate (factory, volume_sink_factory ()); gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory)); return TRUE; } GstPluginDesc plugin_desc = { GST_VERSION_MAJOR, GST_VERSION_MINOR, "volume", plugin_init };