/* -*- c-basic-offset: 2 -*- * GStreamer * Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu> * * 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 <string.h> #include <gst/gst.h> #include <gst/audio/audio.h> #include "gstpassthrough.h" #define PASSTHRU_BUF_SIZE 4096 #define PASSTHRU_NUM_BUFS 4 enum { /* FILL ME */ LAST_SIGNAL }; /* static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */ enum { ARG_0, ARG_SILENT }; static GstStaticPadTemplate passthrough_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_AUDIO_INT_PAD_TEMPLATE_CAPS "; " GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS) ); static GstStaticPadTemplate passthrough_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_AUDIO_INT_PAD_TEMPLATE_CAPS "; " GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS) ); static void passthrough_class_init (GstPassthroughClass * klass); static void passthrough_base_init (GstPassthroughClass * klass); static void passthrough_init (GstPassthrough * filter); static void passthrough_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void passthrough_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstPadLinkReturn passthrough_connect_sink (GstPad * pad, const GstCaps * caps); static void passthrough_chain (GstPad * pad, GstData * _data); static void inline passthrough_fast_float_chain (gfloat * data, guint numsamples); static void inline passthrough_fast_16bit_chain (gint16 * data, guint numsamples); static void inline passthrough_fast_8bit_chain (gint8 * data, guint numsamples); static GstElementClass *parent_class = NULL; static GstPadLinkReturn passthrough_connect_sink (GstPad * pad, const GstCaps * caps) { const gchar *mimetype; GstPassthrough *filter; GstStructure *structure; g_return_val_if_fail (pad != NULL, GST_PAD_LINK_DELAYED); g_return_val_if_fail (caps != NULL, GST_PAD_LINK_DELAYED); filter = GST_PASSTHROUGH (gst_pad_get_parent (pad)); g_return_val_if_fail (filter != NULL, GST_PAD_LINK_REFUSED); g_return_val_if_fail (GST_IS_PASSTHROUGH (filter), GST_PAD_LINK_REFUSED); structure = gst_caps_get_structure (caps, 0); mimetype = gst_structure_get_name (structure); gst_structure_get_int (structure, "rate", &filter->rate); gst_structure_get_int (structure, "channels", &filter->channels); gst_structure_get_int (structure, "width", &filter->width); gst_structure_get_int (structure, "endianness", &filter->endianness); if (strcmp (mimetype, "audio/x-raw-int") == 0) { filter->format = GST_PASSTHROUGH_FORMAT_INT; gst_structure_get_int (structure, "depth", &filter->depth); gst_structure_get_boolean (structure, "signed", &filter->is_signed); if (!filter->silent) { g_print ("Passthrough : channels %d, rate %d\n", filter->channels, filter->rate); g_print ("Passthrough : format int, bit width %d, endianness %d, signed %s\n", filter->width, filter->endianness, filter->is_signed ? "yes" : "no"); } } else if (strcmp (mimetype, "audio/x-raw-float") == 0) { filter->format = GST_PASSTHROUGH_FORMAT_FLOAT; if (!filter->silent) { g_print ("Passthrough : channels %d, rate %d\n", filter->channels, filter->rate); g_print ("Passthrough : format float, width %d\n", filter->width); } } return gst_pad_try_set_caps (filter->srcpad, caps); } GType gst_passthrough_get_type (void) { static GType passthrough_type = 0; if (!passthrough_type) { static const GTypeInfo passthrough_info = { sizeof (GstPassthroughClass), (GBaseInitFunc) passthrough_base_init, NULL, (GClassInitFunc) passthrough_class_init, NULL, NULL, sizeof (GstPassthrough), 0, (GInstanceInitFunc) passthrough_init, }; passthrough_type = g_type_register_static (GST_TYPE_ELEMENT, "GstPassthrough", &passthrough_info, 0); } return passthrough_type; } static void passthrough_base_init (GstPassthroughClass * klass) { GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&passthrough_src_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&passthrough_sink_template)); gst_element_class_set_details_simple (element_class, "Passthrough", "Filter/Effect/Audio", "Transparent filter for audio/raw (boilerplate for effects)", "Thomas <thomas@apestaart.org>, " "Andy Wingo <apwingo@eos.ncsu.edu>"); } static void passthrough_class_init (GstPassthroughClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; parent_class = g_type_class_peek_parent (klass); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT, g_param_spec_boolean ("silent", "silent", "silent", TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gobject_class->set_property = passthrough_set_property; gobject_class->get_property = passthrough_get_property; } static void passthrough_init (GstPassthrough * filter) { filter->srcpad = gst_pad_new_from_static_template (&passthrough_src_template, "src"); gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad); filter->sinkpad = gst_pad_new_from_static_template (&passthrough_sink_template, "sink"); gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad); gst_pad_set_link_function (filter->sinkpad, passthrough_connect_sink); gst_pad_set_chain_function (filter->sinkpad, passthrough_chain); filter->silent = FALSE; } static void passthrough_chain (GstPad * pad, GstData * _data) { GstBuffer *buf = GST_BUFFER (_data); GstPassthrough *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_PASSTHROUGH (gst_pad_get_parent (pad)); g_return_if_fail (filter != NULL); g_return_if_fail (GST_IS_PASSTHROUGH (filter)); switch (filter->format) { case GST_PASSTHROUGH_FORMAT_INT: int_data = (gint16 *) GST_BUFFER_DATA (buf); switch (filter->width) { case 16: passthrough_fast_16bit_chain (int_data, GST_BUFFER_SIZE (buf) / 2); break; case 8: passthrough_fast_8bit_chain ((gint8 *) int_data, GST_BUFFER_SIZE (buf)); break; } break; case GST_PASSTHROUGH_FORMAT_FLOAT: float_data = (gfloat *) GST_BUFFER_DATA (buf); passthrough_fast_float_chain (float_data, GST_BUFFER_SIZE (buf) / sizeof (gfloat)); break; } gst_pad_push (filter->srcpad, GST_DATA (buf)); } static void inline passthrough_fast_float_chain (gfloat * data, guint num_samples) #include "filter.func" static void inline passthrough_fast_16bit_chain (gint16 * data, guint num_samples) #include "filter.func" static void inline passthrough_fast_8bit_chain (gint8 * data, guint num_samples) #include "filter.func" static void passthrough_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstPassthrough *filter; g_return_if_fail (GST_IS_PASSTHROUGH (object)); filter = GST_PASSTHROUGH (object); switch (prop_id) { case ARG_SILENT: filter->silent = g_value_get_boolean (value); break; default: break; } } static void passthrough_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstPassthrough *filter; g_return_if_fail (GST_IS_PASSTHROUGH (object)); filter = GST_PASSTHROUGH (object); switch (prop_id) { case ARG_SILENT: g_value_set_boolean (value, filter->silent); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean plugin_init (GstPlugin * plugin) { return gst_element_register (plugin, "passthrough", GST_RANK_NONE, GST_TYPE_PASSTHROUGH); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "passthrough", "Transparent filter for audio/raw (boilerplate for effects)", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)