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conform to the buffer-frames props entry -- much nicer now...

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Original commit message from CVS:
conform to the buffer-frames props entry -- much nicer now...
This commit is contained in:
Andy Wingo 2003-09-30 12:56:27 +00:00 committed by Tim-Philipp Müller
parent b87729bd69
commit b5802bdbb6
3 changed files with 160 additions and 170 deletions
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271
ext/jack/gstjack.c
View file

@ -1,6 +1,6 @@
/* -*- Mode: C; c-basic-offset: 4 -*- */
/*
Copyright (C) 2002 Andy Wingo <wingo@pobox.com>
Copyright (C) 2002, 2003 Andy Wingo <wingo@pobox.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
@ -27,8 +27,6 @@
/* TODO:
this element is still nonfunctional
- work out the src side (caps setting, etc)
future core TODO:
@ -43,30 +41,30 @@ static GstElementDetails gst_jack_bin_details = {
"Jack Bin",
"Generic/Bin",
"GPL",
"Jack processing bin: see README for more info",
"Jack processing bin",
VERSION,
"Andy Wingo <wingo@pobox.com>",
"(C) 2002 "
"(C) 2002, 2003"
};
static GstElementDetails gst_jack_sink_details = {
"Jack Sink",
"Sink/Audio",
"GPL",
"Output to a Jack processing network: see README for more info",
"Output to a Jack processing network",
VERSION,
"Andy Wingo <wingo@pobox.com>",
"(C) 2002 "
"(C) 2002, 2003"
};
static GstElementDetails gst_jack_src_details = {
"Jack Src",
"Source/Audio",
"GPL",
"Input from a Jack processing network: see README for more info",
"Input from a Jack processing network",
VERSION,
"Andy Wingo <wingo@pobox.com>",
"(C) 2002",
"(C) 2002, 2003",
};
@ -75,17 +73,17 @@ static GstElementClass *parent_class = NULL;
static void gst_jack_init(GstJack *this);
static void gst_jack_class_init(GstJackClass *klass);
static void gst_jack_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_jack_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstPadTemplate* gst_jack_src_request_pad_factory();
static GstPadTemplate* gst_jack_sink_request_pad_factory();
static GstPad* gst_jack_request_new_pad (GstElement *element, GstPadTemplate *templ, const
gchar *name);
static void gst_jack_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_jack_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static GstPad* gst_jack_request_new_pad (GstElement *element, GstPadTemplate *templ,
const gchar *name);
static GstElementStateReturn gst_jack_change_state (GstElement *element);
static GstPadLinkReturn gst_jack_connect (GstPad *pad, GstCaps *caps);
static GstPadLinkReturn gst_jack_link (GstPad *pad, GstCaps *caps);
static void gst_jack_loop (GstElement *element);
@ -162,6 +160,83 @@ gst_jack_src_get_type (void)
return jack_type;
}
static void
gst_jack_class_init(GstJackClass *klass)
{
GObjectClass *object_class;
GstElementClass *element_class;
GParamSpec *pspec;
gchar *prefix;
object_class = (GObjectClass *)klass;
element_class = (GstElementClass *)klass;
if (parent_class == NULL)
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
object_class->get_property = gst_jack_get_property;
object_class->set_property = gst_jack_set_property;
if (GST_IS_JACK_SINK_CLASS (klass))
prefix = "gst-out-";
else
prefix = "gst-in-";
pspec = g_param_spec_string ("port-name-prefix", "Port name prefix",
"String to prepend to jack port names",
prefix, G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class, ARG_PORT_NAME_PREFIX, pspec);
element_class->change_state = gst_jack_change_state;
element_class->request_new_pad = gst_jack_request_new_pad;
}
static void
gst_jack_init(GstJack *this)
{
if (G_OBJECT_TYPE (this) == GST_TYPE_JACK_SRC)
this->direction = GST_PAD_SRC;
else if (G_OBJECT_TYPE (this) == GST_TYPE_JACK_SINK)
this->direction = GST_PAD_SINK;
else
g_assert_not_reached ();
gst_element_set_loop_function (GST_ELEMENT (this), gst_jack_loop);
}
static void
gst_jack_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstJack *this = (GstJack*)object;
switch (prop_id) {
case ARG_PORT_NAME_PREFIX:
if (this->port_name_prefix)
g_free (this->port_name_prefix);
this->port_name_prefix = g_strdup (g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
return;
}
}
static void
gst_jack_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstJack *this = (GstJack*)object;
switch (prop_id) {
case ARG_PORT_NAME_PREFIX:
g_value_set_string (value, this->port_name_prefix);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstPadTemplate*
gst_jack_src_request_pad_factory (void)
{
@ -196,52 +271,6 @@ gst_jack_sink_request_pad_factory(void)
return template;
}
static void
gst_jack_class_init(GstJackClass *klass)
{
GObjectClass *object_class;
GstElementClass *element_class;
gchar *prefix;
object_class = (GObjectClass *)klass;
element_class = (GstElementClass *)klass;
if (parent_class == NULL)
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
object_class->get_property = gst_jack_get_property;
object_class->set_property = gst_jack_set_property;
if (GST_IS_JACK_SINK_CLASS (klass))
prefix = "gst-out-";
else
prefix = "gst-in-";
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_PORT_NAME_PREFIX,
g_param_spec_string("port-name-prefix","Port name prefix",
"String to prepend to jack port names",
prefix,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
element_class->change_state = gst_jack_change_state;
element_class->request_new_pad = gst_jack_request_new_pad;
}
static void
gst_jack_init(GstJack *this)
{
if (G_OBJECT_TYPE (this) == GST_TYPE_JACK_SRC) {
this->direction = GST_PAD_SRC;
} else if (G_OBJECT_TYPE (this) == GST_TYPE_JACK_SINK) {
this->direction = GST_PAD_SINK;
} else {
g_assert_not_reached ();
}
gst_element_set_loop_function(GST_ELEMENT(this), gst_jack_loop);
}
static GstPad*
gst_jack_request_new_pad (GstElement *element, GstPadTemplate *templ, const gchar *name)
{
@ -290,7 +319,7 @@ gst_jack_request_new_pad (GstElement *element, GstPadTemplate *templ, const gcha
pad->peer_name = newname;
pad->pad = gst_pad_new_from_template (templ, newname);
gst_element_add_pad (GST_ELEMENT (this), pad->pad);
gst_pad_set_link_function (pad->pad, gst_jack_connect);
gst_pad_set_link_function (pad->pad, gst_jack_link);
this->pads = g_list_append (this->pads, pad);
@ -298,41 +327,6 @@ gst_jack_request_new_pad (GstElement *element, GstPadTemplate *templ, const gcha
return pad->pad;
}
static void
gst_jack_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstJack *this;
this = (GstJack *)object;
switch (prop_id) {
case ARG_PORT_NAME_PREFIX:
if (this->port_name_prefix)
g_free (this->port_name_prefix);
this->port_name_prefix = g_strdup (g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
return;
}
}
static void
gst_jack_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstJack *this;
this = (GstJack *)object;
switch (prop_id) {
case ARG_PORT_NAME_PREFIX:
g_value_set_string (value, this->port_name_prefix);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_jack_change_state (GstElement *element)
{
@ -358,7 +352,7 @@ gst_jack_change_state (GstElement *element)
|| !GST_IS_JACK_BIN (this->bin)) {
this->bin = NULL;
g_warning ("jack element %s needs to be contained in a jack bin.",
GST_OBJECT_NAME (GST_OBJECT (element)));
GST_OBJECT_NAME (element));
return GST_STATE_FAILURE;
}
@ -383,7 +377,10 @@ gst_jack_change_state (GstElement *element)
while (l) {
pad = GST_JACK_PAD (l);
caps = gst_pad_get_caps (pad->pad);
gst_caps_set (caps, "rate", GST_PROPS_INT_TYPE, (gint) this->bin->rate, NULL);
gst_caps_set (caps, "rate", GST_PROPS_INT_TYPE,
(gint)this->bin->rate, NULL);
gst_caps_set (caps, "buffer-frames", GST_PROPS_INT_TYPE,
(gint)this->bin->nframes, NULL);
if (gst_pad_try_set_caps (pad->pad, caps) <= 0)
return GST_STATE_FAILURE;
l = g_list_next (l);
@ -404,18 +401,18 @@ gst_jack_change_state (GstElement *element)
}
static GstPadLinkReturn
gst_jack_connect (GstPad *pad, GstCaps *caps)
gst_jack_link (GstPad *pad, GstCaps *caps)
{
GstJack *this;
gint rate;
gint rate, buffer_frames;
this = GST_JACK (gst_pad_get_parent (pad));
g_return_val_if_fail (this != NULL, GST_PAD_LINK_REFUSED);
g_return_val_if_fail (GST_IS_JACK (this), GST_PAD_LINK_REFUSED);
this = GST_JACK (GST_OBJECT_PARENT (pad));
if (GST_CAPS_IS_FIXED (caps)) {
gst_caps_get_int (caps, "rate", &rate);
if (this->bin && rate != this->bin->rate)
gst_caps_get_int (caps, "buffer-frames", &buffer_frames);
if (this->bin && (rate != this->bin->rate ||
buffer_frames != this->bin->nframes))
return GST_PAD_LINK_REFUSED;
return GST_PAD_LINK_OK;
@ -429,69 +426,54 @@ gst_jack_loop (GstElement *element)
{
GstJack *this;
GList *pads;
gint len, peeked_len;
guint8 *peeked;
gint avail;
GstEvent *event;
gint len;
GstJackPad *pad;
GstBuffer *buffer;
this = GST_JACK (element);
g_return_if_fail(this != NULL);
len = this->bin->nframes * sizeof (jack_default_audio_sample_t);
len = this->bin->nframes * sizeof (sample_t);
do {
pads = this->pads;
while (pads) {
pad = GST_JACK_PAD (pads);
if (this->direction == GST_PAD_SINK) {
if (!pad->bs)
pad->bs = gst_bytestream_new (pad->pad);
buffer = gst_pad_pull (pad->pad);
read:
peeked_len = gst_bytestream_peek_bytes (pad->bs, &peeked, len);
if (peeked_len < len) {
gst_bytestream_get_status(pad->bs, &avail, &event);
if (event) {
g_warning("got an event on jacksink");
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
/* really, we should just cut this pad out of the graph. let
* me know when this is needed ;)
* also, for sample accuracy etc, we should play avail
* bytes, but hey. */
if (GST_IS_EVENT (buffer)) {
GstEvent *event = GST_EVENT (buffer);
switch (GST_EVENT_TYPE (buffer)) {
case GST_EVENT_EOS:
gst_element_set_eos (element);
gst_event_unref (event);
// gst_element_yield (element); /* shouldn't return */
return;
default:
gst_pad_event_default (pad->pad, event);
return;
}
goto read;
} else {
/* the element at the top of the chain did not emit an eos
* event. this is a Bug(tm) */
g_assert_not_reached();
}
}
/* if the other plugins only give out buffer-frames or less (as
they should), if the length of the GstBuffer is different
from nframes then the buffer is short and we will get EOS
next */
memcpy (pad->data, GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer));
if (len != GST_BUFFER_SIZE (buffer))
memset (pad->data + GST_BUFFER_SIZE (buffer), 0,
len - GST_BUFFER_SIZE (buffer));
memcpy (pad->data, peeked, peeked_len);
gst_bytestream_flush (pad->bs, peeked_len);
gst_buffer_unref (buffer);
} else {
buffer = gst_buffer_new ();
GST_BUFFER_DATA (buffer) = pad->data;
GST_BUFFER_SIZE (buffer) = len;
GST_BUFFER_MAXSIZE (buffer) = len;
gst_buffer_set_data (buffer, pad->data, len);
GST_BUFFER_FLAG_SET(buffer, GST_BUFFER_DONTFREE);
gst_pad_push (pad->pad, buffer);
}
pads = g_list_next (pads);
}
return;
// gst_element_yield (element);
} while (TRUE);
}
static gboolean
@ -499,9 +481,6 @@ plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
if (!gst_library_load ("gstbytestream"))
return FALSE;
factory = gst_element_factory_new ("jackbin", GST_TYPE_JACK_BIN, &gst_jack_bin_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
@ -527,5 +506,3 @@ GstPluginDesc plugin_desc = {
"jack",
plugin_init
};

3
ext/jack/gstjack.h
View file

@ -71,12 +71,13 @@ enum {
};
typedef jack_default_audio_sample_t sample_t;
typedef struct {
GstPad *pad;
void *data;
const gchar *name;
const gchar *peer_name;
GstByteStream *bs;
jack_port_t *port;
} GstJackPad;

14
ext/jack/gstjackbin.c
View file

@ -1,6 +1,6 @@
/* -*- Mode: C; c-basic-offset: 4 -*- */
/*
Copyright (C) 2002 Andy Wingo <wingo@pobox.com>
Copyright (C) 2002, 2003 Andy Wingo <wingo@pobox.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
@ -33,6 +33,7 @@ static GstElementStateReturn gst_jack_bin_change_state(GstElement *element);
/* jack callbacks */
static int process (jack_nframes_t nframes, void *arg);
static int sample_rate (jack_nframes_t nframes, void *arg);
static int buffer_size (jack_nframes_t nframes, void *arg);
static void shutdown (void *arg);
static void sighup_handler (int sig);
@ -133,6 +134,8 @@ gst_jack_bin_change_state (GstElement *element)
jack_set_process_callback (this->client, process, this);
jack_set_sample_rate_callback (this->client, sample_rate, this);
jack_set_buffer_size_callback (this->client, buffer_size, this);
this->nframes = jack_get_buffer_size (this->client);
jack_on_shutdown (this->client, shutdown, this);
}
@ -291,6 +294,15 @@ sample_rate (jack_nframes_t nframes, void *arg)
return 0;
}
static int
buffer_size (jack_nframes_t nframes, void *arg)
{
GstJackBin *bin = (GstJackBin*) arg;
JACK_DEBUG ("the buffer size is now %lu\n", nframes);
bin->nframes = nframes;
return 0;
}
static void
shutdown (void *arg)
{