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Port the stereo element to GStreamer 0.10.

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Original commit message from CVS:
* configure.ac:
* gst/stereo/Makefile.am:
* gst/stereo/gststereo.c: (gst_stereo_base_init),
(gst_stereo_class_init), (gst_stereo_init),
(gst_stereo_transform_ip), (gst_stereo_set_property),
(gst_stereo_get_property):
* gst/stereo/gststereo.h:
Port the stereo element to GStreamer 0.10.
This commit is contained in:
Sebastian Dröge 2007-08-09 17:39:47 +00:00
parent 227f1e3965
commit cf74a6136d
5 changed files with 76 additions and 88 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2007-08-09 Sebastian Dröge <slomo@circular-chaos.org>
* configure.ac:
* gst/stereo/Makefile.am:
* gst/stereo/gststereo.c: (gst_stereo_base_init),
(gst_stereo_class_init), (gst_stereo_init),
(gst_stereo_transform_ip), (gst_stereo_set_property),
(gst_stereo_get_property):
* gst/stereo/gststereo.h:
Port the stereo element to GStreamer 0.10.
2007-08-09 Thomas Vander Stichele <thomas at apestaart dot org>
submitted by: Raphael Higino <phhigino@gmail.com>

2
configure.ac
View file

@ -101,6 +101,7 @@ GST_PLUGINS_ALL="\
rtpmanager \
spectrum \
speed \
stereo \
switch \
tta \
videoparse \
@ -997,6 +998,7 @@ gst/replaygain/Makefile
gst/rtpmanager/Makefile
gst/spectrum/Makefile
gst/speed/Makefile
gst/stereo/Makefile
gst/switch/Makefile
gst/tta/Makefile
gst/videoparse/Makefile

4
gst/stereo/Makefile.am
View file

@ -2,8 +2,8 @@
plugin_LTLIBRARIES = libgststereo.la
libgststereo_la_SOURCES = gststereo.c
libgststereo_la_CFLAGS = $(GST_CFLAGS)
libgststereo_la_LIBADD =
libgststereo_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CONTROLLER_CFLAGS)
libgststereo_la_LIBADD = $(GST_BASE_LIBS) $(GST_LIBS) $(GST_CONTROLLER_LIBS) $(GST_PLUGINS_BASE_LIBS) -lgstaudio-$(GST_MAJORMINOR)
libgststereo_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gststereo.h

127
gst/stereo/gststereo.c
View file

@ -27,6 +27,13 @@
#endif
#include "gststereo.h"
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/audio/audio.h>
#include <gst/audio/gstaudiofilter.h>
#include <gst/controller/gstcontroller.h>
/* elementfactory information */
static const GstElementDetails stereo_details =
GST_ELEMENT_DETAILS ("Stereo effect",
@ -35,6 +42,15 @@ GST_ELEMENT_DETAILS ("Stereo effect",
"Erik Walthinsen <omega@cse.ogi.edu>");
#define ALLOWED_CAPS \
"audio/x-raw-int," \
" depth = (int) 16, " \
" width = (int) 16, " \
" endianness = (int) BYTE_ORDER," \
" rate = (int) [ 1, MAX ]," \
" channels = (int) 2, " \
" signed = (boolean) TRUE"
/* Stereo signals and args */
enum
{
@ -49,112 +65,83 @@ enum
ARG_STEREO
};
static void gst_stereo_base_init (gpointer g_class);
static void gst_stereo_class_init (GstStereoClass * klass);
static void gst_stereo_init (GstStereo * stereo);
static void gst_stereo_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_stereo_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_stereo_chain (GstPad * pad, GstData * _data);
static GstElementClass *parent_class = NULL;
static GstFlowReturn gst_stereo_transform_ip (GstBaseTransform * base,
GstBuffer * outbuf);
/*static guint gst_stereo_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_stereo_get_type (void)
{
static GType stereo_type = 0;
if (!stereo_type) {
static const GTypeInfo stereo_info = {
sizeof (GstStereoClass),
gst_stereo_base_init,
NULL,
(GClassInitFunc) gst_stereo_class_init,
NULL,
NULL,
sizeof (GstStereo),
0,
(GInstanceInitFunc) gst_stereo_init,
};
stereo_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstStereo", &stereo_info, 0);
}
return stereo_type;
}
GST_BOILERPLATE (GstStereo, gst_stereo, GstAudioFilter, GST_TYPE_AUDIO_FILTER);
static void
gst_stereo_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstCaps *caps;
gst_element_class_set_details (element_class, &stereo_details);
caps = gst_caps_from_string (ALLOWED_CAPS);
gst_audio_filter_class_add_pad_templates (GST_AUDIO_FILTER_CLASS (g_class),
caps);
gst_caps_unref (caps);
}
static void
gst_stereo_class_init (GstStereoClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseTransformClass *trans_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
trans_class = (GstBaseTransformClass *) klass;
parent_class = g_type_class_peek_parent (klass);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ACTIVE, g_param_spec_int ("active", "active", "active", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_STEREO, g_param_spec_float ("stereo", "stereo", "stereo", 0.0, 1.0, 0.0, G_PARAM_READWRITE)); /* CHECKME */
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_stereo_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_stereo_get_property);
gobject_class->set_property = gst_stereo_set_property;
gobject_class->get_property = gst_stereo_get_property;
g_object_class_install_property (gobject_class, ARG_ACTIVE,
g_param_spec_boolean ("active", "active", "active",
TRUE, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_STEREO,
g_param_spec_float ("stereo", "stereo", "stereo",
0.0, 1.0, 0.1, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
trans_class->transform_ip = GST_DEBUG_FUNCPTR (gst_stereo_transform_ip);
}
static void
gst_stereo_init (GstStereo * stereo)
gst_stereo_init (GstStereo * stereo, GstStereoClass * klass)
{
stereo->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (stereo), stereo->sinkpad);
gst_pad_set_chain_function (stereo->sinkpad, gst_stereo_chain);
stereo->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (stereo), stereo->srcpad);
stereo->active = FALSE;
stereo->stereo = 2.5;
stereo->active = TRUE;
stereo->stereo = 0.1;
}
static void
gst_stereo_chain (GstPad * pad, GstData * _data)
static GstFlowReturn
gst_stereo_transform_ip (GstBaseTransform * base, GstBuffer * outbuf)
{
GstBuffer *buf = GST_BUFFER (_data);
GstStereo *stereo;
gint16 *data;
gint samples;
GstStereo *stereo = GST_STEREO (base);
gint16 *data = (gint16 *) GST_BUFFER_DATA (outbuf);
gint samples = GST_BUFFER_SIZE (outbuf) / 2;
gint i;
gdouble avg, ldiff, rdiff, tmp, mul;
gdouble avg, ldiff, rdiff, tmp;
gdouble mul = stereo->stereo;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
if (!gst_buffer_is_writable (outbuf))
return GST_FLOW_OK;
stereo = GST_STEREO (GST_OBJECT_PARENT (pad));
g_return_if_fail (stereo != NULL);
g_return_if_fail (GST_IS_STEREO (stereo));
/* FIXME */
/* if (buf->meta) */
/* memcpy(&stereo->meta,buf->meta,sizeof(stereo->meta)); */
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (outbuf)))
gst_object_sync_values (G_OBJECT (stereo), GST_BUFFER_TIMESTAMP (outbuf));
if (stereo->active) {
/*if (stereo->meta.channels == 2 && stereo->meta.format == AFMT_S16_LE) { */
data = (gint16 *) GST_BUFFER_DATA (buf);
samples = GST_BUFFER_SIZE (buf) / 2;
mul = stereo->stereo;
for (i = 0; i < samples / 2; i += 2) {
avg = (data[i] + data[i + 1]) / 2;
ldiff = data[i] - avg;
@ -174,10 +161,9 @@ gst_stereo_chain (GstPad * pad, GstData * _data)
tmp = 32767;
data[i + 1] = tmp;
}
/*} */
}
gst_pad_push (stereo->srcpad, GST_DATA (buf));
return GST_FLOW_OK;
}
static void
@ -191,12 +177,13 @@ gst_stereo_set_property (GObject * object, guint prop_id, const GValue * value,
switch (prop_id) {
case ARG_ACTIVE:
stereo->active = g_value_get_int (value);
stereo->active = g_value_get_boolean (value);
break;
case ARG_STEREO:
stereo->stereo = g_value_get_float (value) * 10.0;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
@ -212,7 +199,7 @@ gst_stereo_get_property (GObject * object, guint prop_id, GValue * value,
switch (prop_id) {
case ARG_ACTIVE:
g_value_set_int (value, stereo->active);
g_value_set_boolean (value, stereo->active);
break;
case ARG_STEREO:
g_value_set_float (value, stereo->stereo / 10.0);

20
gst/stereo/gststereo.h
View file

@ -23,12 +23,7 @@
#include <gst/gst.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <gst/audio/gstaudiofilter.h>
#define GST_TYPE_STEREO \
(gst_stereo_get_type())
@ -45,23 +40,16 @@ typedef struct _GstStereo GstStereo;
typedef struct _GstStereoClass GstStereoClass;
struct _GstStereo {
GstElement element;
GstAudioFilter element;
GstPad *sinkpad,*srcpad;
gint8 active;
gboolean active;
gfloat stereo;
};
struct _GstStereoClass {
GstElementClass parent_class;
GstAudioFilterClass parent_class;
};
GType gst_stereo_get_type(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_STEREO_H__ */