From ad6ed7da2d0d15eecc924dfe408320652481e885 Mon Sep 17 00:00:00 2001 From: Andy Wingo Date: Sat, 22 Dec 2001 23:26:33 +0000 Subject: Initial revision Original commit message from CVS: Initial revision --- gst/speed/gstspeed.c | 347 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 347 insertions(+) create mode 100644 gst/speed/gstspeed.c (limited to 'gst/speed/gstspeed.c') diff --git a/gst/speed/gstspeed.c b/gst/speed/gstspeed.c new file mode 100644 index 00000000..51811227 --- /dev/null +++ b/gst/speed/gstspeed.c @@ -0,0 +1,347 @@ +/* -*- c-basic-offset: 2 -*- + * GStreamer + * Copyright (C) 1999-2001 Erik Walthinsen + * + * 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 +#include +#include +#include +#include "gstspeed.h" + +/* buffer size to make if no bufferpool is available, must be divisible by + * sizeof(gfloat) */ +#define SPEED_BUFSIZE 4096 +/* number of buffers to allocate per chunk in sink buffer pool */ +#define SPEED_NUMBUF 6 + +static GstElementDetails speed_details = { + "Speed", + "Filter/Effect", + "Set speed/pitch on audio/raw streams (resampler)", + VERSION, + "Andy Wingo ", + "(C) 2001" +}; + + +/* Filter signals and args */ +enum { + /* FILL ME */ + LAST_SIGNAL +}; + +enum { + ARG_0, + ARG_SILENT, + ARG_SPEED +}; + +static GstPadTemplate* +speed_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_MONO_PAD_TEMPLATE_PROPS), + gst_caps_new ("sink_float", "audio/raw", + GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS)), + NULL); + } + return template; +} + +static GstPadTemplate* +speed_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_MONO_PAD_TEMPLATE_PROPS)), + NULL); + + return template; +} + +static GstBufferPool* +speed_sink_get_bufferpool (GstPad *pad) +{ + GstSpeed *filter; + + filter = GST_SPEED (gst_pad_get_parent(pad)); + + return filter->sinkpool; +} + +static void speed_class_init (GstSpeedClass *klass); +static void speed_init (GstSpeed *filter); + +static void speed_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); +static void speed_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); + +static gint speed_parse_caps (GstSpeed *filter, GstCaps *caps); + +static void speed_loop (GstElement *element); + +static GstElementClass *parent_class = NULL; +//static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; + +static GstPadNegotiateReturn +speed_negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data) +{ + GstSpeed* filter = GST_SPEED (gst_pad_get_parent (pad)); + + if (*caps==NULL) + return GST_PAD_NEGOTIATE_FAIL; + + if (speed_parse_caps(filter, *caps)) + return GST_PAD_NEGOTIATE_FAIL; + + return gst_pad_negotiate_proxy(pad,filter->sinkpad,caps); +} + +static GstPadNegotiateReturn +speed_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data) +{ + GstSpeed* filter = GST_SPEED (gst_pad_get_parent (pad)); + + if (*caps==NULL) + return GST_PAD_NEGOTIATE_FAIL; + + if (speed_parse_caps(filter, *caps)) + return GST_PAD_NEGOTIATE_FAIL; + + return gst_pad_negotiate_proxy(pad,filter->srcpad,caps); +} + +static gint +speed_parse_caps (GstSpeed *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_SPEED_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 ("Speed : channels %d, rate %d\n", + filter->channels, filter->rate); + g_print ("Speed : 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_SPEED_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 ("Speed : channels %d, rate %d\n", + filter->channels, filter->rate); + g_print ("Speed : format float, layout %s, intercept %f, slope %f\n", + filter->layout, filter->intercept, filter->slope); + } + } else { + return -1; + } + return 0; +} + + +GType +gst_speed_get_type(void) { + static GType speed_type = 0; + + if (!speed_type) { + static const GTypeInfo speed_info = { + sizeof(GstSpeedClass), NULL, + NULL, + (GClassInitFunc)speed_class_init, + NULL, + NULL, + sizeof(GstSpeed), + 0, + (GInstanceInitFunc)speed_init, + }; + speed_type = g_type_register_static(GST_TYPE_ELEMENT, "GstSpeed", &speed_info, 0); + } + return speed_type; +} + +static void +speed_class_init (GstSpeedClass *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_SPEED, + g_param_spec_float("speed","speed","speed", + 0.1,40.0,1.0,G_PARAM_READWRITE)); + + gobject_class->set_property = speed_set_property; + gobject_class->get_property = speed_get_property; +} + +static void +speed_init (GstSpeed *filter) +{ + filter->sinkpad = gst_pad_new_from_template(speed_sink_factory (),"sink"); + gst_pad_set_negotiate_function(filter->sinkpad,speed_negotiate_sink); + gst_pad_set_bufferpool_function (filter->sinkpad, speed_sink_get_bufferpool); + filter->srcpad = gst_pad_new_from_template(speed_src_factory (),"src"); + gst_pad_set_negotiate_function(filter->srcpad,speed_negotiate_src); + + gst_element_add_pad(GST_ELEMENT(filter),filter->sinkpad); + gst_element_add_pad(GST_ELEMENT(filter),filter->srcpad); + gst_element_set_loop_function(GST_ELEMENT(filter),speed_loop); + filter->silent = FALSE; + filter->speed = 1.0; + + filter->sinkpool = gst_buffer_pool_get_default(SPEED_BUFSIZE, + SPEED_NUMBUF); +} + +static void +speed_loop (GstElement *element) +{ + GstSpeed *filter = GST_SPEED(element); + GstBuffer *in, *out; + guint i, j, nin, nout; + gfloat interp, speed, lower, i_float; + + g_return_if_fail(filter != NULL); + g_return_if_fail(GST_IS_SPEED(filter)); + + filter->srcpool = gst_pad_get_bufferpool(filter->srcpad); + + i = j = 0; + speed = filter->speed; + + in = gst_pad_pull(filter->sinkpad); + + /* this is a bit nasty, but hey, it's what you've got to do to keep the same + * algorithm and multiple data types in c. */ + if (filter->format==GST_SPEED_FORMAT_FLOAT) { +#define _FORMAT gfloat +#include "filter.func" +#undef _FORMAT + } else if (filter->format==GST_SPEED_FORMAT_INT && filter->width==16) { +#define _FORMAT gint16 +#include "filter.func" +#undef _FORMAT + } else if (filter->format==GST_SPEED_FORMAT_INT && filter->width==8) { +#define _FORMAT gint8 +#include "filter.func" +#undef _FORMAT + } +} + +static void +speed_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) +{ + GstSpeed *filter; + + /* it's not null if we got it, but it might not be ours */ + g_return_if_fail(GST_IS_SPEED(object)); + filter = GST_SPEED(object); + + switch (prop_id) + { + case ARG_SILENT: + filter->silent = g_value_get_boolean (value); + break; + case ARG_SPEED: + filter->speed = g_value_get_float (value); + break; + default: + break; + } +} + +static void +speed_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) +{ + GstSpeed *filter; + + /* it's not null if we got it, but it might not be ours */ + g_return_if_fail(GST_IS_SPEED(object)); + filter = GST_SPEED(object); + + switch (prop_id) { + case ARG_SILENT: + g_value_set_boolean (value, filter->silent); + break; + case ARG_SPEED: + g_value_set_float (value, filter->speed); + 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("speed",GST_TYPE_SPEED, + &speed_details); + g_return_val_if_fail(factory != NULL, FALSE); + + gst_elementfactory_add_padtemplate (factory, speed_src_factory ()); + gst_elementfactory_add_padtemplate (factory, speed_sink_factory ()); + + gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory)); + + return TRUE; +} + +GstPluginDesc plugin_desc = { + GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "speed", + plugin_init +}; -- cgit v1.2.1