2002-01-19 15:02:09 +00:00
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/* GStreamer
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2001-12-22 23:27:31 +00:00
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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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2003-11-06 22:14:17 +00:00
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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2001-12-22 23:27:31 +00:00
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#include <gst/gst.h>
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#include "mulaw-decode.h"
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#include "mulaw-conversion.h"
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extern GstPadTemplate *mulawdec_src_template, *mulawdec_sink_template;
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/* Stereo signals and args */
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2004-03-14 22:34:33 +00:00
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enum
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{
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2001-12-22 23:27:31 +00:00
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/* FILL ME */
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LAST_SIGNAL
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};
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2004-03-14 22:34:33 +00:00
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enum
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{
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2001-12-22 23:27:31 +00:00
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ARG_0
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};
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2004-03-14 22:34:33 +00:00
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static void gst_mulawdec_class_init (GstMuLawDecClass * klass);
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static void gst_mulawdec_base_init (GstMuLawDecClass * klass);
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static void gst_mulawdec_init (GstMuLawDec * mulawdec);
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2001-12-22 23:27:31 +00:00
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2004-03-14 22:34:33 +00:00
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static void gst_mulawdec_chain (GstPad * pad, GstData * _data);
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2001-12-22 23:27:31 +00:00
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static GstElementClass *parent_class = NULL;
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2004-03-14 22:34:33 +00:00
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2002-01-19 15:02:09 +00:00
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/*static guint gst_stereo_signals[LAST_SIGNAL] = { 0 };*/
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2001-12-22 23:27:31 +00:00
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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static GstCaps *
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mulawdec_getcaps (GstPad * pad)
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{
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GstMuLawDec *mulawdec = GST_MULAWDEC (gst_pad_get_parent (pad));
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GstPad *otherpad;
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GstCaps *base_caps, *othercaps;
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GstStructure *structure;
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const GValue *rate, *chans;
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if (pad == mulawdec->sinkpad) {
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otherpad = mulawdec->srcpad;
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base_caps = gst_caps_new_simple ("audio/x-mulaw", NULL);
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} else {
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otherpad = mulawdec->sinkpad;
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base_caps = gst_caps_new_simple ("audio/x-raw-int",
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"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
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"endianness", G_TYPE_INT, G_BYTE_ORDER, NULL);
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}
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othercaps = gst_pad_get_allowed_caps (otherpad);
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/* Not fully correct, but usually, all structures in a caps have
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* the same samplerate and channels range. */
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structure = gst_caps_get_structure (othercaps, 0);
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rate = gst_structure_get_value (structure, "rate");
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chans = gst_structure_get_value (structure, "channels");
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if (!rate || !chans)
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return gst_caps_new_empty ();
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/* Set the samplerate/channels on the to-be-returned caps */
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structure = gst_caps_get_structure (base_caps, 0);
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gst_structure_set_value (structure, "rate", rate);
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gst_structure_set_value (structure, "channels", chans);
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gst_caps_free (othercaps);
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return base_caps;
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}
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2002-02-17 02:06:04 +00:00
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2003-01-10 13:38:32 +00:00
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static GstPadLinkReturn
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2004-03-14 22:34:33 +00:00
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mulawdec_link (GstPad * pad, const GstCaps * caps)
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2001-12-22 23:27:31 +00:00
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{
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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GstMuLawDec *mulawdec = GST_MULAWDEC (gst_pad_get_parent (pad));
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GstPad *otherpad;
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2003-12-22 01:47:09 +00:00
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GstStructure *structure;
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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const GValue *rate, *chans;
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GstCaps *base_caps;
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2004-03-14 22:34:33 +00:00
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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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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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rate = gst_structure_get_value (structure, "rate");
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chans = gst_structure_get_value (structure, "channels");
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if (!rate || !chans)
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2004-03-14 22:34:33 +00:00
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return GST_PAD_LINK_REFUSED;
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2003-12-22 01:47:09 +00:00
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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if (pad == mulawdec->srcpad) {
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otherpad = mulawdec->sinkpad;
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base_caps = gst_caps_new_simple ("audio/x-mulaw", NULL);
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} else {
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otherpad = mulawdec->srcpad;
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base_caps = gst_caps_new_simple ("audio/x-raw-int",
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"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
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"endianness", G_TYPE_INT, G_BYTE_ORDER, NULL);
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}
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2003-12-22 01:47:09 +00:00
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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structure = gst_caps_get_structure (base_caps, 0);
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gst_structure_set_value (structure, "rate", rate);
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gst_structure_set_value (structure, "channels", chans);
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return gst_pad_try_set_caps (otherpad, base_caps);
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2003-03-03 22:17:28 +00:00
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}
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2001-12-22 23:27:31 +00:00
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GType
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2004-03-14 22:34:33 +00:00
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gst_mulawdec_get_type (void)
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{
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2001-12-22 23:27:31 +00:00
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static GType mulawdec_type = 0;
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if (!mulawdec_type) {
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static const GTypeInfo mulawdec_info = {
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2004-03-14 22:34:33 +00:00
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sizeof (GstMuLawDecClass),
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(GBaseInitFunc) gst_mulawdec_base_init,
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2001-12-22 23:27:31 +00:00
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NULL,
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2004-03-14 22:34:33 +00:00
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(GClassInitFunc) gst_mulawdec_class_init,
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2001-12-22 23:27:31 +00:00
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NULL,
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NULL,
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2004-03-14 22:34:33 +00:00
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sizeof (GstMuLawDec),
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2001-12-22 23:27:31 +00:00
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0,
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2004-03-14 22:34:33 +00:00
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(GInstanceInitFunc) gst_mulawdec_init,
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2001-12-22 23:27:31 +00:00
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};
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2004-03-15 19:32:27 +00:00
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2004-03-14 22:34:33 +00:00
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mulawdec_type =
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2004-03-15 19:32:27 +00:00
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g_type_register_static (GST_TYPE_ELEMENT, "GstMuLawDec", &mulawdec_info,
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0);
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2001-12-22 23:27:31 +00:00
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}
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return mulawdec_type;
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}
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2003-11-02 18:13:24 +00:00
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static void
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2004-03-14 22:34:33 +00:00
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gst_mulawdec_base_init (GstMuLawDecClass * klass)
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2003-11-02 18:13:24 +00:00
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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GstElementDetails mulawdec_details = {
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"Mu Law to PCM conversion",
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"Codec/Decoder/Audio",
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"Convert 8bit mu law to 16bit PCM",
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"Zaheer Merali <zaheer@bellworldwide.net>"
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};
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2003-11-02 18:13:24 +00:00
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gst_element_class_add_pad_template (element_class, mulawdec_src_template);
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gst_element_class_add_pad_template (element_class, mulawdec_sink_template);
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gst_element_class_set_details (element_class, &mulawdec_details);
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}
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2001-12-22 23:27:31 +00:00
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static void
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2004-03-14 22:34:33 +00:00
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gst_mulawdec_class_init (GstMuLawDecClass * klass)
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2001-12-22 23:27:31 +00:00
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{
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2004-03-14 22:34:33 +00:00
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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2001-12-22 23:27:31 +00:00
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}
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static void
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2004-03-14 22:34:33 +00:00
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gst_mulawdec_init (GstMuLawDec * mulawdec)
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2001-12-22 23:27:31 +00:00
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{
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2004-03-14 22:34:33 +00:00
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mulawdec->sinkpad =
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gst_pad_new_from_template (mulawdec_sink_template, "sink");
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gst_pad_set_link_function (mulawdec->sinkpad, mulawdec_link);
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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gst_pad_set_getcaps_function (mulawdec->sinkpad, mulawdec_getcaps);
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2004-03-14 22:34:33 +00:00
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gst_pad_set_chain_function (mulawdec->sinkpad, gst_mulawdec_chain);
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->sinkpad);
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mulawdec->srcpad = gst_pad_new_from_template (mulawdec_src_template, "src");
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gst_pad_set_link_function (mulawdec->srcpad, mulawdec_link);
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gst_pad_set_getcaps_function (mulawdec->srcpad, mulawdec_getcaps);
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2004-03-14 22:34:33 +00:00
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gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->srcpad);
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2001-12-22 23:27:31 +00:00
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}
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static void
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2004-03-14 22:34:33 +00:00
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gst_mulawdec_chain (GstPad * pad, GstData * _data)
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2001-12-22 23:27:31 +00:00
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{
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2003-10-08 16:08:18 +00:00
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GstBuffer *buf = GST_BUFFER (_data);
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2001-12-22 23:27:31 +00:00
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GstMuLawDec *mulawdec;
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gint16 *linear_data;
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guint8 *mulaw_data;
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2004-03-14 22:34:33 +00:00
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GstBuffer *outbuf;
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2001-12-22 23:27:31 +00:00
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2004-03-14 22:34:33 +00:00
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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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2001-12-22 23:27:31 +00:00
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2004-03-14 22:34:33 +00:00
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mulawdec = GST_MULAWDEC (GST_OBJECT_PARENT (pad));
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g_return_if_fail (mulawdec != NULL);
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g_return_if_fail (GST_IS_MULAWDEC (mulawdec));
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2001-12-22 23:27:31 +00:00
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2004-03-14 22:34:33 +00:00
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mulaw_data = (guint8 *) GST_BUFFER_DATA (buf);
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buf) * 2);
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
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GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
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2004-03-14 22:34:33 +00:00
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linear_data = (gint16 *) GST_BUFFER_DATA (outbuf);
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gst/law/: Fix capsnego in all four, remove the unused property functions and simplify the chain functions slightly. I...
Original commit message from CVS:
* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_link),
(gst_alawdec_base_init), (gst_alawdec_class_init),
(gst_alawdec_init), (gst_alawdec_chain):
* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_link),
(gst_alawenc_base_init), (gst_alawenc_class_init),
(gst_alawenc_init), (gst_alawenc_chain):
* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_link),
(gst_mulawdec_base_init), (gst_mulawdec_class_init),
(gst_mulawdec_init), (gst_mulawdec_chain):
* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_link),
(gst_mulawenc_base_init), (gst_mulawenc_class_init),
(gst_mulawenc_init), (gst_mulawenc_chain):
Fix capsnego in all four, remove the unused property functions and
simplify the chain functions slightly. I guess we could use macros
or something similar for those, since the code is so similar, but
I'm currently too lazy...
2004-03-26 01:56:11 +00:00
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2004-03-14 22:34:33 +00:00
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mulaw_decode (mulaw_data, linear_data, GST_BUFFER_SIZE (buf));
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2001-12-22 23:27:31 +00:00
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2004-03-14 22:34:33 +00:00
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gst_buffer_unref (buf);
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gst_pad_push (mulawdec->srcpad, GST_DATA (outbuf));
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2001-12-22 23:27:31 +00:00
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}
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