2003-12-22 01:47:09 +00:00
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2003> David Schleef <ds@schleef.org>
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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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/*#define DEBUG_ENABLED */
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#include <gstaudiofilter.h>
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#include <string.h>
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/* GstAudiofilter signals and args */
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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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enum {
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ARG_0,
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ARG_METHOD,
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/* FILL ME */
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};
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static void gst_audiofilter_base_init (gpointer g_class);
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static void gst_audiofilter_class_init (gpointer g_class, gpointer class_data);
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static void gst_audiofilter_init (GTypeInstance *instance, gpointer g_class);
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static void gst_audiofilter_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void gst_audiofilter_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static void gst_audiofilter_chain (GstPad *pad, GstData *_data);
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GstCaps * gst_audiofilter_class_get_capslist(GstAudiofilterClass *klass);
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static GstElementClass *parent_class = NULL;
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GType
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gst_audiofilter_get_type (void)
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{
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static GType audiofilter_type = 0;
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if (!audiofilter_type) {
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static const GTypeInfo audiofilter_info = {
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sizeof(GstAudiofilterClass),
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gst_audiofilter_base_init,
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NULL,
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gst_audiofilter_class_init,
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NULL,
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NULL,
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sizeof(GstAudiofilter),
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0,
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gst_audiofilter_init,
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};
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audiofilter_type = g_type_register_static(GST_TYPE_ELEMENT,
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"GstAudiofilter", &audiofilter_info, G_TYPE_FLAG_ABSTRACT);
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}
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return audiofilter_type;
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}
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static void gst_audiofilter_base_init (gpointer g_class)
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{
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static GstElementDetails audiofilter_details = {
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"Audio filter base class",
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"Filter/Effect/Audio",
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"Filters audio",
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"David Schleef <ds@schleef.org>"
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};
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GstAudiofilterClass *klass = (GstAudiofilterClass *) g_class;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_set_details (element_class, &audiofilter_details);
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}
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static void gst_audiofilter_class_init (gpointer g_class, gpointer class_data)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstAudiofilterClass *klass;
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klass = (GstAudiofilterClass *)g_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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gobject_class->set_property = gst_audiofilter_set_property;
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gobject_class->get_property = gst_audiofilter_get_property;
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}
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static GstPadLinkReturn
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gst_audiofilter_link (GstPad *pad, const GstCaps *caps)
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{
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GstAudiofilter *audiofilter;
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GstPadLinkReturn ret;
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GstPadLinkReturn link_ret;
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GstStructure *structure;
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GstAudiofilterClass *audiofilter_class;
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GST_DEBUG("gst_audiofilter_link");
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audiofilter = GST_AUDIOFILTER (gst_pad_get_parent (pad));
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audiofilter_class = GST_AUDIOFILTER_CLASS (
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G_OBJECT_GET_CLASS (audiofilter));
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if (pad == audiofilter->srcpad) {
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link_ret = gst_pad_try_set_caps (audiofilter->sinkpad, caps);
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} else {
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link_ret = gst_pad_try_set_caps (audiofilter->srcpad, caps);
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}
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2004-01-02 07:25:10 +00:00
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if (GST_PAD_LINK_FAILED (link_ret)) {
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return link_ret;
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}
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2003-12-22 01:47:09 +00:00
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structure = gst_caps_get_structure (caps, 0);
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if (strcmp (gst_structure_get_name (structure), "audio/x-raw-int") == 0) {
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ret = gst_structure_get_int (structure, "depth", &audiofilter->depth);
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ret &= gst_structure_get_int (structure, "width", &audiofilter->width);
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ret &= gst_structure_get_int (structure, "channels", &audiofilter->channels);
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} else if (strcmp (gst_structure_get_name (structure), "audio/x-raw-float")
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== 0) {
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} else {
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g_assert_not_reached();
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}
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ret &= gst_structure_get_int (structure, "rate", &audiofilter->rate);
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if (audiofilter_class->setup) (audiofilter_class->setup) (audiofilter);
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return GST_PAD_LINK_OK;
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}
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static void
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gst_audiofilter_init (GTypeInstance *instance, gpointer g_class)
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{
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GstAudiofilter *audiofilter = GST_AUDIOFILTER (instance);
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GstPadTemplate *pad_template;
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GST_DEBUG("gst_audiofilter_init");
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pad_template = gst_element_class_get_pad_template(GST_ELEMENT_CLASS(g_class),
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"sink");
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g_return_if_fail(pad_template != NULL);
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audiofilter->sinkpad = gst_pad_new_from_template(pad_template, "sink");
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gst_element_add_pad(GST_ELEMENT(audiofilter),audiofilter->sinkpad);
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gst_pad_set_chain_function(audiofilter->sinkpad,gst_audiofilter_chain);
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gst_pad_set_link_function(audiofilter->sinkpad,gst_audiofilter_link);
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2004-01-02 07:25:10 +00:00
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gst_pad_set_getcaps_function(audiofilter->sinkpad,gst_pad_proxy_getcaps);
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2003-12-22 01:47:09 +00:00
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pad_template = gst_element_class_get_pad_template(GST_ELEMENT_CLASS(g_class),
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"src");
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g_return_if_fail(pad_template != NULL);
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audiofilter->srcpad = gst_pad_new_from_template(pad_template, "src");
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gst_element_add_pad(GST_ELEMENT(audiofilter),audiofilter->srcpad);
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gst_pad_set_link_function(audiofilter->srcpad,gst_audiofilter_link);
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2004-01-02 07:25:10 +00:00
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gst_pad_set_getcaps_function(audiofilter->srcpad,gst_pad_proxy_getcaps);
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2003-12-22 01:47:09 +00:00
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audiofilter->inited = FALSE;
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}
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static void
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gst_audiofilter_chain (GstPad *pad, GstData *data)
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{
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GstBuffer *inbuf = GST_BUFFER (data);
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GstAudiofilter *audiofilter;
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GstBuffer *outbuf;
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GstAudiofilterClass *audiofilter_class;
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GST_DEBUG ("gst_audiofilter_chain");
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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 (inbuf != NULL);
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audiofilter = GST_AUDIOFILTER (gst_pad_get_parent (pad));
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//g_return_if_fail (audiofilter->inited);
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audiofilter_class = GST_AUDIOFILTER_CLASS (
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G_OBJECT_GET_CLASS (audiofilter));
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GST_DEBUG ("gst_audiofilter_chain: got buffer of %d bytes in '%s'",
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GST_BUFFER_SIZE(inbuf), GST_OBJECT_NAME (audiofilter));
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if(audiofilter->passthru){
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gst_pad_push(audiofilter->srcpad, data);
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return;
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}
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if (gst_data_is_writable(data)) {
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if (audiofilter_class->filter_inplace) {
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(audiofilter_class->filter_inplace) (audiofilter, inbuf);
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outbuf = inbuf;
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} else {
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outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE(inbuf));
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GST_BUFFER_DURATION(outbuf) = GST_BUFFER_DURATION(inbuf);
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GST_BUFFER_TIMESTAMP(outbuf) = GST_BUFFER_TIMESTAMP(inbuf);
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(audiofilter_class->filter) (audiofilter, outbuf, inbuf);
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gst_buffer_unref(inbuf);
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}
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} else {
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outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE(inbuf));
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GST_BUFFER_DURATION(outbuf) = GST_BUFFER_DURATION(inbuf);
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GST_BUFFER_TIMESTAMP(outbuf) = GST_BUFFER_TIMESTAMP(inbuf);
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if (audiofilter_class->filter) {
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(audiofilter_class->filter) (audiofilter, outbuf, inbuf);
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} else {
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memcpy(GST_BUFFER_DATA(outbuf), GST_BUFFER_DATA(inbuf),
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GST_BUFFER_SIZE(inbuf));
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(audiofilter_class->filter_inplace) (audiofilter, outbuf);
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}
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gst_buffer_unref(inbuf);
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}
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gst_pad_push(audiofilter->srcpad, GST_DATA (outbuf));
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}
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static void
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gst_audiofilter_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstAudiofilter *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_AUDIOFILTER(object));
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src = GST_AUDIOFILTER(object);
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GST_DEBUG("gst_audiofilter_set_property");
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switch (prop_id) {
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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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gst_audiofilter_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstAudiofilter *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_AUDIOFILTER(object));
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src = GST_AUDIOFILTER(object);
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switch (prop_id) {
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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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void gst_audiofilter_class_add_pad_templates (
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GstAudiofilterClass *audiofilter_class, const GstCaps *caps)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (audiofilter_class);
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audiofilter_class->caps = gst_caps_copy(caps);
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gst_element_class_add_pad_template (element_class,
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gst_pad_template_new("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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gst_caps_copy(caps)));
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gst_element_class_add_pad_template (element_class,
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gst_pad_template_new("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
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gst_caps_copy(caps)));
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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 TRUE;
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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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"gstaudiofilter",
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"Audio filter parent class",
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plugin_init,
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VERSION,
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"LGPL",
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GST_PACKAGE,
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GST_ORIGIN
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)
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