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154 lines
4 KiB
C
154 lines
4 KiB
C
/* GStreamer
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* Copyright (C) <1999> 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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#include <string.h>
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#include "gstspeexdec.h"
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extern GstPadTemplate *speexdec_src_template, *speexdec_sink_template;
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/* elementfactory information */
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GstElementDetails gst_speexdec_details = {
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"speex audio decoder",
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"Codec/Audio/Decoder",
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".speex",
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VERSION,
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"Wim Taymans <wim.taymans@chello.be>",
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"(C) 2000",
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};
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/* SpeexDec 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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/* FILL ME */
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};
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static void gst_speexdec_class_init (GstSpeexDec *klass);
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static void gst_speexdec_init (GstSpeexDec *speexdec);
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static void gst_speexdec_chain (GstPad *pad, GstBuffer *buf);
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static GstPadLinkReturn gst_speexdec_sinkconnect (GstPad *pad, GstCaps *caps);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_speexdec_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_speexdec_get_type(void) {
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static GType speexdec_type = 0;
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if (!speexdec_type) {
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static const GTypeInfo speexdec_info = {
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sizeof(GstSpeexDecClass), NULL,
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NULL,
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(GClassInitFunc)gst_speexdec_class_init,
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NULL,
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NULL,
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sizeof(GstSpeexDec),
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0,
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(GInstanceInitFunc)gst_speexdec_init,
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};
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speexdec_type = g_type_register_static(GST_TYPE_ELEMENT, "GstSpeexDec", &speexdec_info, 0);
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}
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return speexdec_type;
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}
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static void
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gst_speexdec_class_init (GstSpeexDec *klass)
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{
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GstElementClass *gstelement_class;
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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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}
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static void
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gst_speexdec_init (GstSpeexDec *speexdec)
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{
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GST_DEBUG (0,"gst_speexdec_init: initializing");
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/* create the sink and src pads */
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speexdec->sinkpad = gst_pad_new_from_template (speexdec_sink_template, "sink");
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gst_element_add_pad (GST_ELEMENT (speexdec), speexdec->sinkpad);
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gst_pad_set_chain_function (speexdec->sinkpad, gst_speexdec_chain);
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gst_pad_set_link_function (speexdec->sinkpad, gst_speexdec_sinkconnect);
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speexdec->srcpad = gst_pad_new_from_template (speexdec_src_template, "src");
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gst_element_add_pad (GST_ELEMENT (speexdec), speexdec->srcpad);
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}
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static GstPadLinkReturn
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gst_speexdec_sinkconnect (GstPad *pad, GstCaps *caps)
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{
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GstSpeexDec *speexdec;
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gint rate;
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speexdec = GST_SPEEXDEC (gst_pad_get_parent (pad));
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if (!GST_CAPS_IS_FIXED (caps))
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return GST_PAD_LINK_DELAYED;
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gst_caps_get_int (caps, "rate", &rate);
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if (gst_pad_try_set_caps (speexdec->srcpad,
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GST_CAPS_NEW (
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"speex_raw",
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"audio/raw",
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"format", GST_PROPS_STRING ("int"),
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"law", GST_PROPS_INT (0),
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"endianness", GST_PROPS_INT (G_BYTE_ORDER),
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"signed", GST_PROPS_BOOLEAN (TRUE),
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"width", GST_PROPS_INT (16),
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"depth", GST_PROPS_INT (16),
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"rate", GST_PROPS_INT (rate),
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"channels", GST_PROPS_INT (1)
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)))
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{
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return GST_PAD_LINK_OK;
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}
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return GST_PAD_LINK_REFUSED;
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}
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static void
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gst_speexdec_chain (GstPad *pad, GstBuffer *buf)
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{
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GstSpeexDec *speexdec;
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gchar *data;
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guint size;
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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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/*g_return_if_fail(GST_IS_BUFFER(buf)); */
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speexdec = GST_SPEEXDEC (gst_pad_get_parent (pad));
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data = GST_BUFFER_DATA (buf);
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size = GST_BUFFER_SIZE (buf);
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gst_buffer_unref(buf);
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}
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