mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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336 lines
9.9 KiB
C
336 lines
9.9 KiB
C
/* -*- c-basic-offset: 2 -*-
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* GStreamer
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* Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <gst/gst.h>
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#include <gst/audio/audio.h>
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#include "gstpassthrough.h"
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#define PASSTHRU_BUF_SIZE 4096
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#define PASSTHRU_NUM_BUFS 4
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/* elementfactory information */
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static GstElementDetails passthrough_details = {
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"Passthrough",
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"Filter/Audio/Effect",
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"Transparent filter for audio/raw (boilerplate for effects)",
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"Thomas <thomas@apestaart.org>, "\
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"Andy Wingo <apwingo@eos.ncsu.edu>"
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};
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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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/* static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */
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enum {
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ARG_0,
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ARG_SILENT
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};
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static GstPadTemplate*
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passthrough_sink_factory (void)
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{
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static GstPadTemplate *template = NULL;
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if (! template) {
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template = gst_pad_template_new
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("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
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gst_caps_append (gst_caps_new ("sink_int", "audio/x-raw-int",
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GST_AUDIO_INT_PAD_TEMPLATE_PROPS),
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gst_caps_new ("sink_float", "audio/x-raw-float",
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GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_PROPS)),
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NULL);
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}
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return template;
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}
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static GstPadTemplate*
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passthrough_src_factory (void)
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{
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static GstPadTemplate *template = NULL;
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if (! template)
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template = gst_pad_template_new
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("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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gst_caps_append (gst_caps_new ("src_float", "audio/x-raw-float",
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GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_PROPS),
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gst_caps_new ("src_int", "audio/x-raw-float",
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GST_AUDIO_INT_PAD_TEMPLATE_PROPS)),
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NULL);
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return template;
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}
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static void passthrough_class_init (GstPassthroughClass *klass);
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static void passthrough_base_init (GstPassthroughClass *klass);
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static void passthrough_init (GstPassthrough *filter);
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static void passthrough_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void passthrough_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static GstPadLinkReturn passthrough_connect_sink (GstPad *pad, GstCaps *caps);
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static void passthrough_chain (GstPad *pad, GstData *_data);
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static void inline passthrough_fast_float_chain (gfloat* data, guint numsamples);
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static void inline passthrough_fast_16bit_chain (gint16* data, guint numsamples);
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static void inline passthrough_fast_8bit_chain (gint8* data, guint numsamples);
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static GstElementClass *parent_class = NULL;
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static GstBufferPool*
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passthrough_get_bufferpool (GstPad *pad)
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{
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GstPassthrough *filter;
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filter = GST_PASSTHROUGH (gst_pad_get_parent (pad));
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return gst_pad_get_bufferpool (filter->srcpad);
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}
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static GstPadLinkReturn
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passthrough_connect_sink (GstPad *pad, GstCaps *caps)
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{
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const gchar *mimetype;
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GstPassthrough *filter;
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g_return_val_if_fail (pad != NULL, GST_PAD_LINK_DELAYED);
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g_return_val_if_fail (caps != NULL, GST_PAD_LINK_DELAYED);
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filter = GST_PASSTHROUGH (gst_pad_get_parent (pad));
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g_return_val_if_fail (filter != NULL, GST_PAD_LINK_REFUSED);
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g_return_val_if_fail (GST_IS_PASSTHROUGH (filter), GST_PAD_LINK_REFUSED);
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mimetype = gst_caps_get_mime(caps);
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gst_caps_get_int (caps, "rate", &filter->rate);
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gst_caps_get_int (caps, "channels", &filter->channels);
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gst_caps_get_int (caps, "width", &filter->width);
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gst_caps_get_int (caps, "endianness", &filter->endianness);
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if (strcmp (mimetype, "audio/x-raw-int") == 0) {
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filter->format = GST_PASSTHROUGH_FORMAT_INT;
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gst_caps_get_int (caps, "depth", &filter->depth);
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gst_caps_get_boolean (caps, "signed", &filter->is_signed);
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if (! filter->silent) {
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g_print ("Passthrough : channels %d, rate %d\n", filter->channels, filter->rate);
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g_print ("Passthrough : format int, bit width %d, endianness %d, signed %s\n",
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filter->width, filter->endianness, filter->is_signed ? "yes" : "no");
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}
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} else if (strcmp (mimetype, "audio/x-raw-float") == 0) {
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filter->format = GST_PASSTHROUGH_FORMAT_FLOAT;
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if (! filter->silent) {
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g_print ("Passthrough : channels %d, rate %d\n", filter->channels, filter->rate);
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g_print ("Passthrough : format float, width %d\n", filter->width);
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}
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}
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if (GST_CAPS_IS_FIXED (caps))
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return gst_pad_try_set_caps (filter->srcpad, caps);
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return GST_PAD_LINK_DELAYED;
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}
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GType
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gst_passthrough_get_type (void)
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{
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static GType passthrough_type = 0;
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if (!passthrough_type) {
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static const GTypeInfo passthrough_info = {
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sizeof (GstPassthroughClass),
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(GBaseInitFunc) passthrough_base_init,
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NULL,
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(GClassInitFunc) passthrough_class_init,
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NULL,
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NULL,
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sizeof (GstPassthrough),
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0,
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(GInstanceInitFunc) passthrough_init,
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};
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passthrough_type = g_type_register_static (GST_TYPE_ELEMENT, "GstPassthrough", &passthrough_info, 0);
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}
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return passthrough_type;
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}
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static void
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passthrough_base_init (GstPassthroughClass *klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_add_pad_template (element_class, passthrough_src_factory ());
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gst_element_class_add_pad_template (element_class, passthrough_sink_factory ());
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gst_element_class_set_details (element_class, &passthrough_details);
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}
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static void
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passthrough_class_init (GstPassthroughClass *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_SILENT,
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g_param_spec_boolean("silent","silent","silent",
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TRUE, G_PARAM_READWRITE)); /* CHECKME */
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gobject_class->set_property = passthrough_set_property;
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gobject_class->get_property = passthrough_get_property;
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}
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static void
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passthrough_init (GstPassthrough *filter)
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{
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filter->srcpad = gst_pad_new_from_template (passthrough_src_factory (),"src");
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gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
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filter->sinkpad = gst_pad_new_from_template (passthrough_sink_factory (),"sink");
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gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
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gst_pad_set_link_function (filter->sinkpad, passthrough_connect_sink);
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gst_pad_set_bufferpool_function (filter->sinkpad, passthrough_get_bufferpool);
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gst_pad_set_chain_function (filter->sinkpad, passthrough_chain);
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filter->silent = FALSE;
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}
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static void
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passthrough_chain (GstPad *pad, GstData *_data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstPassthrough *filter;
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gint16 *int_data;
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gfloat *float_data;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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filter = GST_PASSTHROUGH (gst_pad_get_parent (pad));
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g_return_if_fail (filter != NULL);
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g_return_if_fail (GST_IS_PASSTHROUGH (filter));
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filter->bufpool = gst_pad_get_bufferpool (filter->srcpad);
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if (filter->bufpool == NULL) {
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filter->bufpool = gst_buffer_pool_get_default (PASSTHRU_BUF_SIZE, PASSTHRU_NUM_BUFS);
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}
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switch (filter->format) {
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case GST_PASSTHROUGH_FORMAT_INT:
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int_data = (gint16 *) GST_BUFFER_DATA (buf);
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switch (filter->width) {
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case 16:
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passthrough_fast_16bit_chain (int_data, GST_BUFFER_SIZE (buf) / 2);
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break;
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case 8:
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passthrough_fast_8bit_chain ((gint8*) int_data, GST_BUFFER_SIZE (buf));
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break;
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}
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break;
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case GST_PASSTHROUGH_FORMAT_FLOAT:
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float_data = (gfloat *) GST_BUFFER_DATA (buf);
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passthrough_fast_float_chain (float_data, GST_BUFFER_SIZE (buf) / sizeof (gfloat));
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break;
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}
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gst_pad_push (filter->srcpad, GST_DATA (buf));
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}
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static void inline
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passthrough_fast_float_chain(gfloat* data, guint num_samples)
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#include "filter.func"
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static void inline
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passthrough_fast_16bit_chain(gint16* data, guint num_samples)
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#include "filter.func"
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static void inline
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passthrough_fast_8bit_chain(gint8* data, guint num_samples)
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#include "filter.func"
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static void
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passthrough_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstPassthrough *filter;
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g_return_if_fail (GST_IS_PASSTHROUGH (object));
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filter = GST_PASSTHROUGH (object);
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switch (prop_id)
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{
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case ARG_SILENT:
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filter->silent = g_value_get_boolean (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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passthrough_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstPassthrough *filter;
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g_return_if_fail (GST_IS_PASSTHROUGH (object));
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filter = GST_PASSTHROUGH (object);
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switch (prop_id) {
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case ARG_SILENT:
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g_value_set_boolean (value, filter->silent);
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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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static gboolean
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plugin_init (GstPlugin *plugin)
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{
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return gst_element_register (plugin, "passthrough",
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GST_RANK_NONE, GST_TYPE_PASSTHROUGH);
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}
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GST_PLUGIN_DEFINE (
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"passthrough",
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"Transparent filter for audio/raw (boilerplate for effects)",
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plugin_init,
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VERSION,
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"LGPL",
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GST_COPYRIGHT,
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GST_PACKAGE,
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GST_ORIGIN
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)
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