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spandsp: Adding spandsp plugin with spanplc element for packet loss concealment

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This commit is contained in:
Youness Alaoui 2011-09-06 22:11:06 -04:00 committed by Olivier Crête
parent baf875b928
commit 61ee9918be
6 changed files with 430 additions and 0 deletions
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13
configure.ac
View file

@ -1718,6 +1718,17 @@ AG_GST_CHECK_FEATURE(RTMP, [rtmp library], rtmp, [
AG_GST_PKG_CHECK_MODULES(RTMP, librtmp)
])
dnl *** spandsp ***
translit(dnm, m, l) AM_CONDITIONAL(USE_SPANDSP, true)
AG_GST_CHECK_FEATURE(SPANDSP, [Spandsp], spandsp, [
PKG_CHECK_MODULES(SPANDSP, spandsp >= 0.0.6, [
HAVE_SPANDSP="yes" ], [
HAVE_SPANDSP="no"
])
])
AC_SUBST(SPANDSP_CFLAGS)
AC_SUBST(SPANDSP_LIBS)
dnl *** GSettings ***
translit(dnm, m, l) AM_CONDITIONAL(USE_GSETTINGS, true)
AG_GST_CHECK_FEATURE(GSETTINGS, [GSettings plugin], gsettings, [
@ -1780,6 +1791,7 @@ AM_CONDITIONAL(USE_WILDMIDI, false)
AM_CONDITIONAL(USE_SDL, false)
AM_CONDITIONAL(USE_SNDFILE, false)
AM_CONDITIONAL(USE_SOUNDTOUCH, false)
AM_CONDITIONAL(USE_SPANDSP, false)
AM_CONDITIONAL(USE_SPC, false)
AM_CONDITIONAL(USE_GME, false)
AM_CONDITIONAL(USE_GSETTINGS, false)
@ -2029,6 +2041,7 @@ ext/schroedinger/Makefile
ext/sdl/Makefile
ext/sndfile/Makefile
ext/soundtouch/Makefile
ext/spandsp/Makefile
ext/teletextdec/Makefile
ext/gme/Makefile
ext/gsettings/Makefile

8
ext/Makefile.am
View file

@ -324,6 +324,12 @@ else
SOUNDTOUCH_DIR=
endif
if USE_SPANDSP
SPANDSP_DIR = spandsp
else
SPANDSP_DIR =
endif
if USE_SPC
SPC_DIR=spc
else
@ -433,6 +439,7 @@ SUBDIRS=\
$(SMOOTHWAVE_DIR) \
$(SNDFILE_DIR) \
$(SOUNDTOUCH_DIR) \
$(SPANDSP_DIR) \
$(GME_DIR) \
$(SPC_DIR) \
$(SWFDEC_DIR) \
@ -485,6 +492,7 @@ DIST_SUBDIRS = \
sdl \
sndfile \
soundtouch \
spandsp \
spc \
gme \
swfdec \

9
ext/spandsp/Makefile.am Normal file
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@ -0,0 +1,9 @@
plugin_LTLIBRARIES = libgstspandsp.la
libgstspandsp_la_SOURCES = gstspandsp.c gstspanplc.c
libgstspandsp_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) $(SPANDSP_CFLAGS)
libgstspandsp_la_LIBADD = $(SPANDSP_LIBS) $(GST_PLUGINS_BASE_LIBS) $(GST_LIBS)
libgstspandsp_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstspandsp_la_LIBTOOLFLAGS = --tag=disable-static
noinst_HEADERS = gstspanplc.h

40
ext/spandsp/gstspandsp.c Normal file
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@ -0,0 +1,40 @@
/*
* (C) 2011 Collabora Ltd.
* Contact: Youness Alaoui <youness.alaoui@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstspanplc.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "spanplc",
GST_RANK_PRIMARY, GST_TYPE_SPAN_PLC);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"spandsp",
"libspandsp plugin",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

300
ext/spandsp/gstspanplc.c Normal file
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@ -0,0 +1,300 @@
/*
* (C) 2011 Collabora Ltd.
* Contact: Youness Alaoui <youness.alaoui@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-spanplc
*
* The spanplc (Packet Loss Concealment) element provides a synthetic
* fill-in signal, to minimise the audible effect of lost packets in
* VoIP applications
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstspanplc.h"
GST_BOILERPLATE (GstSpanPlc, gst_span_plc, GstElement, GST_TYPE_ELEMENT);
GST_DEBUG_CATEGORY_STATIC (gst_span_plc_debug);
#define GST_CAT_DEFAULT gst_span_plc_debug
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"endianness = (int) BYTE_ORDER, signed = (bool) TRUE, "
"width = (int) 16, depth = (int) 16, "
"rate = (int) [ 1, MAX ], channels = (int) 1")
);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"endianness = (int) BYTE_ORDER, signed = (bool) TRUE, "
"width = (int) 16, depth = (int) 16, "
"rate = (int) [ 1, MAX ], channels = (int) 1")
);
static void gst_span_plc_dispose (GObject * object);
static GstStateChangeReturn gst_span_plc_change_state (GstElement * element,
GstStateChange transition);
static gboolean gst_span_plc_setcaps_sink (GstPad * pad, GstCaps * caps);
static GstFlowReturn gst_span_plc_chain (GstPad * pad, GstBuffer * buf);
static gboolean gst_span_plc_event_sink (GstPad * pad, GstEvent * event);
static void
gst_span_plc_base_init (gpointer gclass)
{
GstElementClass *element_class = (GstElementClass *) gclass;
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_factory));
gst_element_class_set_details_simple (element_class, "SpanDSP PLC",
"Filter/Effect/Audio",
"Adds packet loss concealment to audio",
"Youness Alaoui <youness.alaoui@collabora.co.uk>");
}
/* initialize the plugin's class */
static void
gst_span_plc_class_init (GstSpanPlcClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
gobject_class->dispose = gst_span_plc_dispose;
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_span_plc_change_state);
GST_DEBUG_CATEGORY_INIT (gst_span_plc_debug, "spandlc",
0, "spandlc's packet loss concealment");
}
static void
gst_span_plc_init (GstSpanPlc * plc, GstSpanPlcClass * gclass)
{
GST_DEBUG_OBJECT (plc, "init");
plc->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
plc->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
gst_pad_set_setcaps_function (plc->sinkpad,
GST_DEBUG_FUNCPTR (gst_span_plc_setcaps_sink));
gst_pad_set_getcaps_function (plc->srcpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
gst_pad_set_getcaps_function (plc->sinkpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
gst_pad_set_chain_function (plc->sinkpad,
GST_DEBUG_FUNCPTR (gst_span_plc_chain));
gst_pad_set_event_function (plc->sinkpad,
GST_DEBUG_FUNCPTR (gst_span_plc_event_sink));
gst_element_add_pad (GST_ELEMENT (plc), plc->srcpad);
gst_element_add_pad (GST_ELEMENT (plc), plc->sinkpad);
plc->plc_state = NULL;
plc->last_stop = GST_CLOCK_TIME_NONE;
GST_DEBUG_OBJECT (plc, "init complete");
}
static void
gst_span_plc_dispose (GObject * object)
{
GstSpanPlc *plc = GST_SPAN_PLC (object);
if (plc->plc_state)
plc_free (plc->plc_state);
plc->plc_state = NULL;
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_span_plc_flush (GstSpanPlc * plc, gboolean renew)
{
if (plc->plc_state)
plc_free (plc->plc_state);
if (renew)
plc->plc_state = plc_init (NULL);
else
plc->plc_state = NULL;
plc->last_stop = GST_CLOCK_TIME_NONE;
}
static GstStateChangeReturn
gst_span_plc_change_state (GstElement * element, GstStateChange transition)
{
GstSpanPlc *plc = GST_SPAN_PLC (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
gst_span_plc_flush (plc, TRUE);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_span_plc_flush (plc, FALSE);
default:
break;
}
return ret;
}
static gboolean
gst_span_plc_setcaps_sink (GstPad * pad, GstCaps * caps)
{
GstSpanPlc *plc = GST_SPAN_PLC (gst_pad_get_parent (pad));
GstStructure *s = NULL;
gboolean ret = FALSE;
ret = gst_pad_set_caps (plc->srcpad, caps);
s = gst_caps_get_structure (caps, 0);
if (s) {
gst_structure_get_int (s, "rate", &plc->sample_rate);
GST_DEBUG_OBJECT (plc, "setcaps: got sample rate : %d", plc->sample_rate);
}
gst_span_plc_flush (plc, TRUE);
gst_object_unref (plc);
return ret;
}
static GstFlowReturn
gst_span_plc_chain (GstPad * pad, GstBuffer * buffer)
{
GstSpanPlc *plc = GST_SPAN_PLC (GST_PAD_PARENT (pad));
GstClockTime buffer_duration;
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
plc->last_stop = GST_BUFFER_TIMESTAMP (buffer);
else
GST_WARNING_OBJECT (plc, "Buffer has no timestamp!");
if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
buffer_duration = GST_BUFFER_DURATION (buffer);
} else {
GST_WARNING_OBJECT (plc, "Buffer has no duration!");
buffer_duration = (GST_BUFFER_SIZE (buffer) /
(plc->sample_rate * sizeof (guint16))) * GST_SECOND;
GST_DEBUG_OBJECT (plc, "Buffer duration : %" GST_TIME_FORMAT,
GST_TIME_ARGS (buffer_duration));
}
plc->last_stop += buffer_duration;
if (plc->plc_state->missing_samples != 0)
buffer = gst_buffer_make_writable (buffer);
plc_rx (plc->plc_state, (int16_t *) GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer) / 2);
return gst_pad_push (plc->srcpad, buffer);
}
static void
gst_span_plc_send_fillin (GstSpanPlc * plc, GstClockTime duration)
{
guint buf_size;
GstBuffer *buffer = NULL;
buf_size = ((float) duration / GST_SECOND) * plc->sample_rate;
buf_size *= sizeof (guint16);
buffer = gst_buffer_new_and_alloc (buf_size);
GST_DEBUG_OBJECT (plc, "Missing packet of %" GST_TIME_FORMAT
" == %d bytes", GST_TIME_ARGS (duration), buf_size);
plc_fillin (plc->plc_state, (int16_t *) GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer) / 2);
GST_BUFFER_TIMESTAMP (buffer) = plc->last_stop;
GST_BUFFER_DURATION (buffer) = duration;
gst_buffer_set_caps (buffer, GST_PAD_CAPS (plc->srcpad));
gst_pad_push (plc->srcpad, buffer);
}
static gboolean
gst_span_plc_event_sink (GstPad * pad, GstEvent * event)
{
gboolean ret = FALSE;
GstSpanPlc *plc = GST_SPAN_PLC (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (plc, "received event %s", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:
{
GstFormat format;
gdouble rate;
gint64 start, stop, time;
gboolean update;
gst_event_parse_new_segment (event, &update, &rate, &format, &start,
&stop, &time);
if (format != GST_FORMAT_TIME)
goto newseg_wrong_format;
if (update) {
/* time progressed without data, see if we can fill the gap with
* some concealment data */
if (plc->last_stop < start)
gst_span_plc_send_fillin (plc, start - plc->last_stop);
}
plc->last_stop = start;
break;
}
case GST_EVENT_FLUSH_START:
gst_span_plc_flush (plc, TRUE);
break;
default:
break;
}
ret = gst_pad_push_event (plc->srcpad, event);
gst_object_unref (plc);
return ret;
newseg_wrong_format:
{
GST_DEBUG_OBJECT (plc, "received non TIME newsegment");
gst_object_unref (plc);
return FALSE;
}
}

60
ext/spandsp/gstspanplc.h Normal file
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@ -0,0 +1,60 @@
/*
* (C) 2011 Collabora Ltd.
* Contact: Youness Alaoui <youness.alaoui@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __GST_SPANDSP_H__
#define __GST_SPANDSP_H__
#include <gst/gst.h>
#include <spandsp.h>
G_BEGIN_DECLS
#define GST_TYPE_SPAN_PLC (gst_span_plc_get_type())
#define GST_SPAN_PLC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SPAN_PLC,GstSpanPlc))
#define GST_SPAN_PLC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SPAN_PLC,GstSpanPlcClass))
#define GST_IS_SPAN_PLC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SPAN_PLC))
#define GST_IS_SPAN_PLC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SPAN_PLC))
typedef struct _GstSpanPlc GstSpanPlc;
typedef struct _GstSpanPlcClass GstSpanPlcClass;
struct _GstSpanPlc
{
GstElement element;
GstPad *sinkpad;
GstPad *srcpad;
/* <private> */
plc_state_t *plc_state;
GstClockTime last_stop;
gint sample_rate;
};
struct _GstSpanPlcClass
{
GstElementClass parent_class;
};
GType gst_span_plc_get_type (void);
G_END_DECLS
#endif