mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-10 19:31:12 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/gst/volume/gstvolume.c
Andy Wingo 33378146eb better capsnego in osssink s/parseau/auparse/ update volume, mulawdecode, auparse to new capsnego 
Original commit message from CVS:
* better capsnego in osssink
* s/parseau/auparse/
* update volume, mulawdecode, auparse to new capsnego
2002-02-17 02:06:04 +00:00

363 lines
11 KiB
C
Raw Blame History

/* -*- c-basic-offset: 2 -*-
* GStreamer
* Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#include <string.h>
#include <gst/gst.h>
#include <gst/audio/audio.h>
#include "gstvolume.h"
static GstElementDetails volume_details = {
"Volume",
"Filter/Effect",
"Set volume on audio/raw streams",
VERSION,
"Andy Wingo <apwingo@eos.ncsu.edu>",
"(C) 2001"
};
/* Filter signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_SILENT,
ARG_MUTED,
ARG_VOLUME
};
static GstPadTemplate*
volume_sink_factory (void)
{
static GstPadTemplate *template = NULL;
if (!template) {
template = gst_padtemplate_new
("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
gst_caps_append(gst_caps_new ("sink_int", "audio/raw",
GST_AUDIO_INT_PAD_TEMPLATE_PROPS),
gst_caps_new ("sink_float", "audio/raw",
GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS)),
NULL);
}
return template;
}
static GstPadTemplate*
volume_src_factory (void)
{
static GstPadTemplate *template = NULL;
if (!template)
template = gst_padtemplate_new
("src", GST_PAD_SRC, GST_PAD_ALWAYS,
gst_caps_append (gst_caps_new ("src_float", "audio/raw",
GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS),
gst_caps_new ("src_int", "audio/raw",
GST_AUDIO_INT_PAD_TEMPLATE_PROPS)),
NULL);
return template;
}
static void volume_class_init (GstVolumeClass *klass);
static void volume_init (GstVolume *filter);
static void volume_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void volume_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static gboolean volume_parse_caps (GstVolume *filter, GstCaps *caps);
static void volume_chain (GstPad *pad, GstBuffer *buf);
static void inline volume_fast_float_chain (gfloat* data, guint numsamples, GstVolume *filter);
static void inline volume_fast_8bit_chain (gint8* data, guint numsamples, GstVolume *filter);
static void inline volume_fast_16bit_chain (gint16* data, guint numsamples, GstVolume *filter);
static GstElementClass *parent_class = NULL;
//static guint gst_filter_signals[LAST_SIGNAL] = { 0 };
static GstBufferPool*
volume_get_bufferpool (GstPad *pad)
{
GstVolume *filter;
filter = GST_VOLUME (gst_pad_get_parent (pad));
return gst_pad_get_bufferpool (filter->srcpad);
}
static GstPadConnectReturn
volume_connect_sink (GstPad *pad, GstCaps *caps)
{
GstVolume *filter;
filter = GST_VOLUME (gst_pad_get_parent (pad));
g_return_val_if_fail (filter != NULL, GST_PAD_CONNECT_REFUSED);
g_return_val_if_fail (GST_IS_VOLUME (filter), GST_PAD_CONNECT_REFUSED);
if (GST_CAPS_IS_FIXED (caps)) {
if (!volume_parse_caps (filter, caps) || !gst_pad_try_set_caps (filter->srcpad, caps))
return GST_PAD_CONNECT_REFUSED;
return GST_PAD_CONNECT_OK;
}
return GST_PAD_CONNECT_DELAYED;
}
static gboolean
volume_parse_caps (GstVolume *filter, GstCaps *caps)
{
const gchar *format;
g_return_val_if_fail(filter!=NULL,-1);
g_return_val_if_fail(caps!=NULL,-1);
format = gst_caps_get_string(caps, "format");
filter->rate = gst_caps_get_int (caps, "rate");
filter->channels = gst_caps_get_int (caps, "channels");
if (strcmp(format, "int")==0) {
filter->format = GST_VOLUME_FORMAT_INT;
filter->width = gst_caps_get_int (caps, "width");
filter->depth = gst_caps_get_int (caps, "depth");
filter->law = gst_caps_get_int (caps, "law");
filter->endianness = gst_caps_get_int (caps, "endianness");
filter->is_signed = gst_caps_get_int (caps, "signed");
if (!filter->silent) {
g_print ("Volume : channels %d, rate %d\n",
filter->channels, filter->rate);
g_print ("Volume : format int, bit width %d, endianness %d, signed %s\n",
filter->width, filter->endianness, filter->is_signed ? "yes" : "no");
}
} else if (strcmp(format, "float")==0) {
filter->format = GST_VOLUME_FORMAT_FLOAT;
filter->layout = gst_caps_get_string(caps, "layout");
filter->intercept = gst_caps_get_float(caps, "intercept");
filter->slope = gst_caps_get_float(caps, "slope");
if (!filter->silent) {
g_print ("Volume : channels %d, rate %d\n",
filter->channels, filter->rate);
g_print ("Volume : format float, layout %s, intercept %f, slope %f\n",
filter->layout, filter->intercept, filter->slope);
}
} else {
return FALSE;
}
return TRUE;
}
GType
gst_volume_get_type(void) {
static GType volume_type = 0;
if (!volume_type) {
static const GTypeInfo volume_info = {
sizeof(GstVolumeClass), NULL,
NULL,
(GClassInitFunc)volume_class_init,
NULL,
NULL,
sizeof(GstVolume),
0,
(GInstanceInitFunc)volume_init,
};
volume_type = g_type_register_static(GST_TYPE_ELEMENT, "GstVolume", &volume_info, 0);
}
return volume_type;
}
static void
volume_class_init (GstVolumeClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SILENT,
g_param_spec_boolean("silent","silent","silent",
TRUE,G_PARAM_READWRITE)); // CHECKME
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MUTED,
g_param_spec_boolean("muted","muted","muted",
FALSE,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VOLUME,
g_param_spec_float("volume","volume","volume",
-4.0,4.0,1.0,G_PARAM_READWRITE));
gobject_class->set_property = volume_set_property;
gobject_class->get_property = volume_get_property;
}
static void
volume_init (GstVolume *filter)
{
filter->sinkpad = gst_pad_new_from_template(volume_sink_factory (),"sink");
gst_pad_set_connect_function(filter->sinkpad,volume_connect_sink);
gst_pad_set_bufferpool_function(filter->sinkpad,volume_get_bufferpool);
filter->srcpad = gst_pad_new_from_template(volume_src_factory (),"src");
gst_element_add_pad(GST_ELEMENT(filter),filter->sinkpad);
gst_element_add_pad(GST_ELEMENT(filter),filter->srcpad);
gst_pad_set_chain_function(filter->sinkpad,volume_chain);
filter->silent = FALSE;
filter->muted = FALSE;
filter->volume_i = 8192;
filter->volume_f = 1.0;
}
static void
volume_chain (GstPad *pad, GstBuffer *buf)
{
GstVolume *filter;
gint16 *int_data;
gfloat *float_data;
g_return_if_fail(pad != NULL);
g_return_if_fail(GST_IS_PAD(pad));
g_return_if_fail(buf != NULL);
filter = GST_VOLUME(GST_OBJECT_PARENT (pad));
g_return_if_fail(filter != NULL);
g_return_if_fail(GST_IS_VOLUME(filter));
switch (filter->format) {
case GST_VOLUME_FORMAT_INT:
int_data = (gint16 *)GST_BUFFER_DATA(buf);
switch (filter->width) {
case 16:
volume_fast_16bit_chain(int_data,GST_BUFFER_SIZE(buf)/2, filter);
break;
case 8:
volume_fast_8bit_chain((gint8*)int_data,GST_BUFFER_SIZE(buf), filter);
break;
}
break;
case GST_VOLUME_FORMAT_FLOAT:
float_data = (gfloat *)GST_BUFFER_DATA(buf);
volume_fast_float_chain(float_data,GST_BUFFER_SIZE(buf)/sizeof(float), filter);
break;
}
gst_pad_push(filter->srcpad,buf);
}
static void inline
volume_fast_float_chain(gfloat* data, guint num_samples, GstVolume *filter)
#include "filter.func"
static void inline
volume_fast_16bit_chain(gint16* data, guint num_samples, GstVolume *filter)
#include "filter.func"
static void inline
volume_fast_8bit_chain(gint8* data, guint num_samples, GstVolume *filter)
#include "filter.func"
static void
volume_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstVolume *filter;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_VOLUME(object));
filter = GST_VOLUME(object);
switch (prop_id)
{
case ARG_SILENT:
filter->silent = g_value_get_boolean (value);
break;
case ARG_MUTED:
filter->muted = g_value_get_boolean (value);
break;
case ARG_VOLUME:
filter->volume_f = g_value_get_float (value);
filter->volume_i = filter->volume_f*8192;
break;
default:
break;
}
}
static void
volume_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstVolume *filter;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_VOLUME(object));
filter = GST_VOLUME(object);
switch (prop_id) {
case ARG_SILENT:
g_value_set_boolean (value, filter->silent);
break;
case ARG_MUTED:
g_value_set_boolean (value, filter->muted);
break;
case ARG_VOLUME:
g_value_set_float (value, filter->volume_f);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
factory = gst_elementfactory_new("volume",GST_TYPE_VOLUME,
&volume_details);
g_return_val_if_fail(factory != NULL, FALSE);
gst_elementfactory_add_padtemplate (factory, volume_src_factory ());
gst_elementfactory_add_padtemplate (factory, volume_sink_factory ());
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"volume",
plugin_init
};
Reference in a new issue View git blame Copy permalink