mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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b6f8a7b4ef
Original commit message from CVS: Jack fixed too
524 lines
15 KiB
C
524 lines
15 KiB
C
/* -*- Mode: C; c-basic-offset: 4 -*- */
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/*
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Copyright (C) 2002, 2003 Andy Wingo <wingo@pobox.com>
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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 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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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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General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include "gstjack.h"
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#include <gst/audio/audio.h>
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/* TODO:
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- work out the src side (caps setting, etc)
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future core TODO:
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- make a jack clock provider
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- add GST_ELEMENT_FIXED_DATA_RATE, GST_ELEMENT_QOS,
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GST_ELEMENT_CHANGES_DATA_RATE element flags, and make the scheduler
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sensitive to them
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*/
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/* elementfactory information */
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static GstElementDetails gst_jack_bin_details = {
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"Jack Bin",
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"Generic/Bin",
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"Jack processing bin",
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"Andy Wingo <wingo@pobox.com>",
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};
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static GstElementDetails gst_jack_sink_details = {
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"Jack Sink",
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"Sink/Audio",
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"Output to a Jack processing network",
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"Andy Wingo <wingo@pobox.com>",
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};
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static GstElementDetails gst_jack_src_details = {
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"Jack Src",
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"Source/Audio",
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"Input from a Jack processing network",
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"Andy Wingo <wingo@pobox.com>",
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};
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static GHashTable *port_name_counts = NULL;
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static GstElementClass *parent_class = NULL;
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static void gst_jack_base_init (gpointer g_class);
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static void gst_jack_src_base_init (gpointer g_class);
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static void gst_jack_sink_base_init (gpointer g_class);
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static void gst_jack_init(GstJack *this);
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static void gst_jack_class_init(GstJackClass *klass);
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static void gst_jack_set_property (GObject *object, guint prop_id,
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const GValue *value, GParamSpec *pspec);
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static void gst_jack_get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec);
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static GstPadTemplate* gst_jack_src_request_pad_factory();
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static GstPadTemplate* gst_jack_sink_request_pad_factory();
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static GstPad* gst_jack_request_new_pad (GstElement *element, GstPadTemplate *templ,
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const gchar *name);
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static GstElementStateReturn gst_jack_change_state (GstElement *element);
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static GstPadLinkReturn gst_jack_link (GstPad *pad, GstCaps *caps);
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static void gst_jack_loop (GstElement *element);
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enum {
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ARG_0,
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ARG_PORT_NAME_PREFIX,
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};
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GType
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gst_jack_get_type (void)
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{
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static GType jack_type = 0;
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if (!jack_type) {
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static const GTypeInfo jack_info = {
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sizeof(GstJackClass),
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gst_jack_base_init,
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NULL,
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NULL,
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NULL,
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NULL,
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sizeof(GstJack),
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0,
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NULL,
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};
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jack_type = g_type_register_static (GST_TYPE_ELEMENT, "GstJack", &jack_info, 0);
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}
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return jack_type;
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}
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GType
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gst_jack_sink_get_type (void)
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{
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static GType jack_type = 0;
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if (!jack_type) {
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static const GTypeInfo jack_info = {
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sizeof(GstJackClass),
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gst_jack_sink_base_init,
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NULL,
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(GClassInitFunc)gst_jack_class_init,
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NULL,
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NULL,
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sizeof(GstJack),
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0,
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(GInstanceInitFunc)gst_jack_init,
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};
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jack_type = g_type_register_static (GST_TYPE_JACK, "GstJackSink", &jack_info, 0);
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}
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return jack_type;
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}
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GType
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gst_jack_src_get_type (void)
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{
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static GType jack_type = 0;
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if (!jack_type) {
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static const GTypeInfo jack_info = {
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sizeof(GstJackClass),
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gst_jack_src_base_init,
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NULL,
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(GClassInitFunc)gst_jack_class_init,
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NULL,
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NULL,
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sizeof(GstJack),
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0,
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(GInstanceInitFunc)gst_jack_init,
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};
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jack_type = g_type_register_static (GST_TYPE_JACK, "GstJackSrc", &jack_info, 0);
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}
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return jack_type;
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}
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static void
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gst_jack_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_set_details (element_class, &gst_jack_bin_details);
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}
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static void
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gst_jack_src_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class, gst_jack_src_request_pad_factory ());
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gst_element_class_set_details (element_class, &gst_jack_src_details);
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}
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static void
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gst_jack_sink_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class, gst_jack_sink_request_pad_factory ());
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gst_element_class_set_details (element_class, &gst_jack_sink_details);
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}
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static void
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gst_jack_class_init(GstJackClass *klass)
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{
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GObjectClass *object_class;
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GstElementClass *element_class;
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GParamSpec *pspec;
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gchar *prefix;
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object_class = (GObjectClass *)klass;
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element_class = (GstElementClass *)klass;
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if (parent_class == NULL)
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parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
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object_class->get_property = gst_jack_get_property;
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object_class->set_property = gst_jack_set_property;
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if (GST_IS_JACK_SINK_CLASS (klass))
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prefix = "gst-out-";
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else
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prefix = "gst-in-";
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pspec = g_param_spec_string ("port-name-prefix", "Port name prefix",
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"String to prepend to jack port names",
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prefix, G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
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g_object_class_install_property (object_class, ARG_PORT_NAME_PREFIX, pspec);
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element_class->change_state = gst_jack_change_state;
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element_class->request_new_pad = gst_jack_request_new_pad;
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}
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static void
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gst_jack_init(GstJack *this)
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{
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if (G_OBJECT_TYPE (this) == GST_TYPE_JACK_SRC)
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this->direction = GST_PAD_SRC;
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else if (G_OBJECT_TYPE (this) == GST_TYPE_JACK_SINK)
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this->direction = GST_PAD_SINK;
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else
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g_assert_not_reached ();
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gst_element_set_loop_function (GST_ELEMENT (this), gst_jack_loop);
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}
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static void
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gst_jack_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstJack *this = (GstJack*)object;
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switch (prop_id) {
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case ARG_PORT_NAME_PREFIX:
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if (this->port_name_prefix)
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g_free (this->port_name_prefix);
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this->port_name_prefix = g_strdup (g_value_get_string (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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return;
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}
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}
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static void
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gst_jack_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstJack *this = (GstJack*)object;
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switch (prop_id) {
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case ARG_PORT_NAME_PREFIX:
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g_value_set_string (value, this->port_name_prefix);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GstPadTemplate*
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gst_jack_src_request_pad_factory (void)
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{
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static GstPadTemplate *template = NULL;
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if (!template) {
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GstCaps *caps;
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caps = gst_caps_new ("src",
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"audio/x-raw-float",
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GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_PROPS);
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template = gst_pad_template_new ("%s", GST_PAD_SRC,
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GST_PAD_REQUEST, caps, NULL);
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}
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return template;
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}
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static GstPadTemplate*
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gst_jack_sink_request_pad_factory (void)
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{
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static GstPadTemplate *template = NULL;
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if (!template) {
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GstCaps *caps;
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caps = gst_caps_new ("sink",
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"audio/x-raw-float",
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GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_PROPS);
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template = gst_pad_template_new ("%s", GST_PAD_SINK,
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GST_PAD_REQUEST, caps, NULL);
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}
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return template;
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}
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static GstPad*
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gst_jack_request_new_pad (GstElement *element, GstPadTemplate *templ, const gchar *name)
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{
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GstJack *this;
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gchar *newname;
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GList *l, **pad_list;
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GstJackPad *pad;
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gint count;
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g_return_val_if_fail ((this = GST_JACK (element)), NULL);
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if (!this->bin)
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pad_list = &this->pads;
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else if (this->direction == GST_PAD_SRC)
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pad_list = &this->bin->src_pads;
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else
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pad_list = &this->bin->sink_pads;
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if (name) {
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l = *pad_list;
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while (l) {
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if (strcmp (GST_JACK_PAD(l)->name, name) == 0) {
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g_warning("requested port name %s already in use.", name);
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return NULL;
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}
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l = l->next;
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}
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newname = g_strdup (name);
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} else {
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if (this->direction == GST_PAD_SINK)
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newname = g_strdup ("alsa_pcm:playback_1");
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else
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newname = g_strdup ("alsa_pcm:capture_1");
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}
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pad = g_new0 (GstJackPad, 1);
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if (!port_name_counts)
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port_name_counts = g_hash_table_new (g_str_hash, g_str_equal);
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count = GPOINTER_TO_INT (g_hash_table_lookup (port_name_counts, this->port_name_prefix));
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g_hash_table_insert (port_name_counts, g_strdup (this->port_name_prefix), GINT_TO_POINTER (count+1));
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pad->name = g_strdup_printf ("%s%d", this->port_name_prefix, count);
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pad->peer_name = newname;
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pad->pad = gst_pad_new_from_template (templ, newname);
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gst_element_add_pad (GST_ELEMENT (this), pad->pad);
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gst_pad_set_link_function (pad->pad, gst_jack_link);
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this->pads = g_list_append (this->pads, pad);
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g_print ("returning from request_new_pad, pad %s created, to connect to %s\n", pad->name, pad->peer_name);
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return pad->pad;
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}
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static GstElementStateReturn
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gst_jack_change_state (GstElement *element)
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{
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GstJack *this;
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GList *l = NULL, **pads;
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GstJackPad *pad;
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GstCaps *caps;
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g_return_val_if_fail (element != NULL, FALSE);
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this = GST_JACK (element);
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switch (GST_STATE_PENDING (element)) {
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case GST_STATE_NULL:
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JACK_DEBUG ("%s: NULL", GST_OBJECT_NAME (GST_OBJECT (this)));
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break;
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case GST_STATE_READY:
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JACK_DEBUG ("%s: READY", GST_OBJECT_NAME (GST_OBJECT (this)));
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if (!this->bin) {
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if (!(this->bin = (GstJackBin*)gst_element_get_managing_bin (element))
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|| !GST_IS_JACK_BIN (this->bin)) {
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this->bin = NULL;
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g_warning ("jack element %s needs to be contained in a jack bin.",
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GST_OBJECT_NAME (element));
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return GST_STATE_FAILURE;
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}
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/* fixme: verify that all names are unique */
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l = this->pads;
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pads = (this->direction == GST_PAD_SRC) ? &this->bin->src_pads : &this->bin->sink_pads;
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while (l) {
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pad = GST_JACK_PAD (l);
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JACK_DEBUG ("%s: appending pad %s:%s to list", GST_OBJECT_NAME (this), pad->name, pad->peer_name);
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*pads = g_list_append (*pads, pad);
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l = g_list_next (l);
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}
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}
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break;
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case GST_STATE_PAUSED:
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JACK_DEBUG ("%s: PAUSED", GST_OBJECT_NAME (GST_OBJECT (this)));
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if (GST_STATE (element) == GST_STATE_READY) {
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/* we're in READY->PAUSED */
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l = this->pads;
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while (l) {
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pad = GST_JACK_PAD (l);
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caps = gst_pad_get_caps (pad->pad);
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gst_caps_set (caps, "rate", GST_PROPS_INT_TYPE,
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(gint)this->bin->rate, NULL);
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gst_caps_set (caps, "buffer-frames", GST_PROPS_INT_TYPE,
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(gint)this->bin->nframes, NULL);
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if (gst_pad_try_set_caps (pad->pad, caps) <= 0)
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return GST_STATE_FAILURE;
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l = g_list_next (l);
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}
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}
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break;
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case GST_STATE_PLAYING:
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JACK_DEBUG ("%s: PLAYING", GST_OBJECT_NAME (GST_OBJECT (this)));
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break;
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}
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JACK_DEBUG ("%s: state change finished", GST_OBJECT_NAME (this));
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if (GST_ELEMENT_CLASS (parent_class)->change_state)
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return GST_ELEMENT_CLASS (parent_class)->change_state (element);
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return GST_STATE_SUCCESS;
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}
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static GstPadLinkReturn
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gst_jack_link (GstPad *pad, GstCaps *caps)
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{
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GstJack *this;
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gint rate, buffer_frames;
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this = GST_JACK (GST_OBJECT_PARENT (pad));
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if (GST_CAPS_IS_FIXED (caps)) {
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gst_caps_get_int (caps, "rate", &rate);
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gst_caps_get_int (caps, "buffer-frames", &buffer_frames);
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if (this->bin && (rate != this->bin->rate ||
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buffer_frames != this->bin->nframes))
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return GST_PAD_LINK_REFUSED;
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return GST_PAD_LINK_OK;
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}
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return GST_PAD_LINK_DELAYED;
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}
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static void
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gst_jack_loop (GstElement *element)
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{
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GstJack *this;
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GList *pads;
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gint len;
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GstJackPad *pad;
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GstBuffer *buffer;
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this = GST_JACK (element);
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len = this->bin->nframes * sizeof (sample_t);
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pads = this->pads;
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while (pads) {
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pad = GST_JACK_PAD (pads);
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if (this->direction == GST_PAD_SINK) {
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buffer = GST_BUFFER (gst_pad_pull (pad->pad));
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if (GST_IS_EVENT (buffer)) {
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GstEvent *event = GST_EVENT (buffer);
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switch (GST_EVENT_TYPE (buffer)) {
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case GST_EVENT_EOS:
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gst_element_set_eos (element);
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gst_event_unref (event);
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return;
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default:
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gst_pad_event_default (pad->pad, event);
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return;
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}
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}
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/* if the other plugins only give out buffer-frames or less (as
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they should), if the length of the GstBuffer is different
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from nframes then the buffer is short and we will get EOS
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next */
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memcpy (pad->data, GST_BUFFER_DATA (buffer),
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GST_BUFFER_SIZE (buffer));
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if (len != GST_BUFFER_SIZE (buffer))
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memset (pad->data + GST_BUFFER_SIZE (buffer), 0,
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len - GST_BUFFER_SIZE (buffer));
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gst_buffer_unref (buffer);
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} else {
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buffer = gst_buffer_new ();
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gst_buffer_set_data (buffer, pad->data, len);
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GST_BUFFER_FLAG_SET(buffer, GST_BUFFER_DONTFREE);
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gst_pad_push (pad->pad, GST_DATA (buffer));
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}
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pads = g_list_next (pads);
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}
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}
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static gboolean
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plugin_init (GstPlugin *plugin)
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{
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if (!gst_element_register (plugin, "jackbin", GST_RANK_NONE, GST_TYPE_JACK_BIN))
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return FALSE;
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|
if (!gst_element_register (plugin, "jacksrc", GST_RANK_NONE, GST_TYPE_JACK_SRC))
|
|
return FALSE;
|
|
|
|
if (!gst_element_register (plugin, "jacksink", GST_RANK_NONE, GST_TYPE_JACK_SINK))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (
|
|
GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"jack",
|
|
"Jack Plugin Library",
|
|
plugin_init,
|
|
VERSION,
|
|
"GPL",
|
|
GST_COPYRIGHT,
|
|
GST_PACKAGE,
|
|
GST_ORIGIN)
|