mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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f2d5cae8da
Original commit message from CVS: /GstBuffer/GstData/ in the API where you can pass events. Fix the plugins to deal with that. Fixes #113488.
183 lines
5.2 KiB
C
183 lines
5.2 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 <gst/gst.h>
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#include "mulaw-encode.h"
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#include "mulaw-conversion.h"
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extern GstPadTemplate *mulawenc_src_template, *mulawenc_sink_template;
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/* Stereo 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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};
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static void gst_mulawenc_class_init (GstMuLawEncClass *klass);
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static void gst_mulawenc_init (GstMuLawEnc *mulawenc);
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static void gst_mulawenc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void gst_mulawenc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static void gst_mulawenc_chain (GstPad *pad, GstData *_data);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_stereo_signals[LAST_SIGNAL] = { 0 }; */
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static GstPadLinkReturn
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mulawenc_link (GstPad *pad, GstCaps *caps)
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{
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GstCaps* tempcaps;
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gint rate, channels;
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GstMuLawEnc* mulawenc = GST_MULAWENC (GST_OBJECT_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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if (!gst_caps_get (caps, "rate", &rate,
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"channels", &channels,
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NULL))
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return GST_PAD_LINK_DELAYED;
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tempcaps = GST_CAPS_NEW (
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"sinesrc_src_caps",
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"audio/x-mulaw",
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"depth", GST_PROPS_INT (8),
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"width", GST_PROPS_INT (8),
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"signed", GST_PROPS_BOOLEAN (FALSE),
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"rate", GST_PROPS_INT (rate),
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"channels", GST_PROPS_INT (channels),
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NULL);
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return gst_pad_try_set_caps (mulawenc->srcpad, tempcaps);
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}
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GType
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gst_mulawenc_get_type(void) {
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static GType mulawenc_type = 0;
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if (!mulawenc_type) {
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static const GTypeInfo mulawenc_info = {
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sizeof(GstMuLawEncClass), NULL,
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NULL,
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(GClassInitFunc)gst_mulawenc_class_init,
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NULL,
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NULL,
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sizeof(GstMuLawEnc),
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0,
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(GInstanceInitFunc)gst_mulawenc_init,
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};
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mulawenc_type = g_type_register_static(GST_TYPE_ELEMENT, "GstMuLawEnc", &mulawenc_info, 0);
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}
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return mulawenc_type;
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}
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static void
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gst_mulawenc_class_init (GstMuLawEncClass *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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gobject_class->set_property = gst_mulawenc_set_property;
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gobject_class->get_property = gst_mulawenc_get_property;
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}
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static void
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gst_mulawenc_init (GstMuLawEnc *mulawenc)
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{
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mulawenc->sinkpad = gst_pad_new_from_template(mulawenc_sink_template,"sink");
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mulawenc->srcpad = gst_pad_new_from_template(mulawenc_src_template,"src");
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gst_pad_set_link_function (mulawenc->sinkpad, mulawenc_link);
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gst_element_add_pad(GST_ELEMENT(mulawenc),mulawenc->sinkpad);
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gst_pad_set_chain_function(mulawenc->sinkpad,gst_mulawenc_chain);
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gst_element_add_pad(GST_ELEMENT(mulawenc),mulawenc->srcpad);
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}
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static void
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gst_mulawenc_chain (GstPad *pad,GstData *_data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstMuLawEnc *mulawenc;
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gint16 *linear_data;
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guint8 *mulaw_data;
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GstBuffer* outbuf;
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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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mulawenc = GST_MULAWENC(GST_OBJECT_PARENT (pad));
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g_return_if_fail(mulawenc != NULL);
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g_return_if_fail(GST_IS_MULAWENC(mulawenc));
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linear_data = (gint16 *)GST_BUFFER_DATA(buf);
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outbuf=gst_buffer_new();
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GST_BUFFER_DATA(outbuf) = (gchar*)g_new(gint16,GST_BUFFER_SIZE(buf)/4);
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GST_BUFFER_SIZE(outbuf) = GST_BUFFER_SIZE(buf)/2;
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mulaw_data = (gint8*)GST_BUFFER_DATA(outbuf);
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mulaw_encode(linear_data,mulaw_data,GST_BUFFER_SIZE(outbuf));
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gst_buffer_unref(buf);
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gst_pad_push(mulawenc->srcpad,GST_DATA (outbuf));
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}
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static void
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gst_mulawenc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstMuLawEnc *mulawenc;
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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_MULAWENC(object));
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mulawenc = GST_MULAWENC(object);
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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_mulawenc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstMuLawEnc *mulawenc;
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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_MULAWENC(object));
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mulawenc = GST_MULAWENC(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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