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visual: split the plugin wrapper and the actual element

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This commit is contained in:
Stefan Sauer 2012-06-25 22:42:44 +02:00
parent 0dd87d7eb7
commit 85565952ee
4 changed files with 283 additions and 224 deletions
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3
ext/libvisual/Makefile.am
View file

@ -1,6 +1,6 @@
plugin_LTLIBRARIES = libgstlibvisual.la
libgstlibvisual_la_SOURCES = visual.c
libgstlibvisual_la_SOURCES = plugin.c visual.c
libgstlibvisual_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(LIBVISUAL_CFLAGS)
libgstlibvisual_la_LIBADD = \
$(top_builddir)/gst-libs/gst/audio/libgstaudio-$(GST_API_VERSION).la \
@ -9,3 +9,4 @@ libgstlibvisual_la_LIBADD = \
libgstlibvisual_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstlibvisual_la_LIBTOOLFLAGS = --tag=disable-static
noinst_HEADERS = visual.h

178
ext/libvisual/plugin.c Normal file
View file

@ -0,0 +1,178 @@
/* GStreamer
* Copyright (C) 2004 Benjamin Otte <otte@gnome.org>
* 2012 Stefan Sauer <ensonic@users.sf.net>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "visual.h"
GST_DEBUG_CATEGORY (libvisual_debug);
#define GST_CAT_DEFAULT (libvisual_debug)
static void
libvisual_log_handler (const char *message, const char *funcname, void *priv)
{
GST_CAT_LEVEL_LOG (libvisual_debug, (GstDebugLevel) (priv), NULL, "%s - %s",
funcname, message);
}
/*
* Replace invalid chars with _ in the type name
*/
static void
make_valid_name (gchar * name)
{
static const gchar extra_chars[] = "-_+";
gchar *p = name;
for (; *p; p++) {
gint valid = ((p[0] >= 'A' && p[0] <= 'Z') ||
(p[0] >= 'a' && p[0] <= 'z') ||
(p[0] >= '0' && p[0] <= '9') || strchr (extra_chars, p[0]));
if (!valid)
*p = '_';
}
}
static gboolean
gst_visual_actor_plugin_is_gl (VisObject * plugin, const gchar * name)
{
gboolean is_gl;
gint depth;
#if !defined(VISUAL_API_VERSION)
depth = VISUAL_PLUGIN_ACTOR (plugin)->depth;
is_gl = (depth == VISUAL_VIDEO_DEPTH_GL);
#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
depth = VISUAL_ACTOR_PLUGIN (plugin)->vidoptions.depth;
/* FIXME: how to figure this out correctly in 0.4? */
is_gl = (depth & VISUAL_VIDEO_DEPTH_GL) == VISUAL_VIDEO_DEPTH_GL;
#else
# error what libvisual version is this?
#endif
if (!is_gl) {
GST_DEBUG ("plugin %s is not a GL plugin (%d), registering", name, depth);
} else {
GST_DEBUG ("plugin %s is a GL plugin (%d), ignoring", name, depth);
}
return is_gl;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
guint i, count;
VisList *list;
GST_DEBUG_CATEGORY_INIT (libvisual_debug, "libvisual", 0,
"libvisual audio visualisations");
#ifdef LIBVISUAL_PLUGINSBASEDIR
gst_plugin_add_dependency_simple (plugin, "HOME/.libvisual/actor",
LIBVISUAL_PLUGINSBASEDIR "/actor", NULL, GST_PLUGIN_DEPENDENCY_FLAG_NONE);
#endif
visual_log_set_verboseness (VISUAL_LOG_VERBOSENESS_LOW);
visual_log_set_info_handler (libvisual_log_handler, (void *) GST_LEVEL_INFO);
visual_log_set_warning_handler (libvisual_log_handler,
(void *) GST_LEVEL_WARNING);
visual_log_set_critical_handler (libvisual_log_handler,
(void *) GST_LEVEL_ERROR);
visual_log_set_error_handler (libvisual_log_handler,
(void *) GST_LEVEL_ERROR);
if (!visual_is_initialized ())
if (visual_init (NULL, NULL) != 0)
return FALSE;
list = visual_actor_get_list ();
#if !defined(VISUAL_API_VERSION)
count = visual_list_count (list);
#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
count = visual_collection_size (VISUAL_COLLECTION (list));
#endif
for (i = 0; i < count; i++) {
VisPluginRef *ref = visual_list_get (list, i);
VisPluginData *visplugin = NULL;
gboolean skip = FALSE;
GType type;
gchar *name;
GTypeInfo info = {
sizeof (GstVisualClass),
NULL,
NULL,
gst_visual_class_init,
NULL,
ref,
sizeof (GstVisual),
0,
NULL
};
visplugin = visual_plugin_load (ref);
if (ref->info->plugname == NULL)
continue;
/* Blacklist some plugins */
if (strcmp (ref->info->plugname, "gstreamer") == 0 ||
strcmp (ref->info->plugname, "gdkpixbuf") == 0) {
skip = TRUE;
} else {
/* Ignore plugins that only support GL output for now */
skip = gst_visual_actor_plugin_is_gl (visplugin->info->plugin,
visplugin->info->plugname);
}
visual_plugin_unload (visplugin);
if (!skip) {
name = g_strdup_printf ("GstVisual%s", ref->info->plugname);
make_valid_name (name);
type = g_type_register_static (GST_TYPE_VISUAL, name, &info, 0);
g_free (name);
name = g_strdup_printf ("libvisual_%s", ref->info->plugname);
make_valid_name (name);
if (!gst_element_register (plugin, name, GST_RANK_NONE, type)) {
g_free (name);
return FALSE;
}
g_free (name);
}
}
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
libvisual,
"libvisual visualization plugins",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

231
ext/libvisual/visual.c
View file

@ -1,5 +1,6 @@
/* GStreamer
* Copyright (C) 2004 Benjamin Otte <otte@gnome.org>
* 2012 Stefan Sauer <ensonic@users.sf.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -21,25 +22,9 @@
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <gst/video/video.h>
#include <gst/video/gstvideopool.h>
#include <gst/audio/audio.h>
#include <libvisual/libvisual.h>
#include <string.h>
#include "visual.h"
#define GST_TYPE_VISUAL (gst_visual_get_type())
#define GST_IS_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VISUAL))
#define GST_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VISUAL,GstVisual))
#define GST_IS_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VISUAL))
#define GST_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VISUAL,GstVisualClass))
#define GST_VISUAL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_VISUAL, GstVisualClass))
typedef struct _GstVisual GstVisual;
typedef struct _GstVisualClass GstVisualClass;
GST_DEBUG_CATEGORY_STATIC (libvisual_debug);
GST_DEBUG_CATEGORY_EXTERN (libvisual_debug);
#define GST_CAT_DEFAULT (libvisual_debug)
/* amounf of samples before we can feed libvisual */
@ -50,54 +35,6 @@ GST_DEBUG_CATEGORY_STATIC (libvisual_debug);
#define DEFAULT_FPS_N 25
#define DEFAULT_FPS_D 1
struct _GstVisual
{
GstElement element;
/* pads */
GstPad *sinkpad;
GstPad *srcpad;
GstSegment segment;
/* libvisual stuff */
VisAudio *audio;
VisVideo *video;
VisActor *actor;
/* audio/video state */
GstAudioInfo info;
/* framerate numerator & denominator */
gint fps_n;
gint fps_d;
gint width;
gint height;
GstClockTime duration;
guint outsize;
GstBufferPool *pool;
/* samples per frame based on caps */
guint spf;
/* state stuff */
GstAdapter *adapter;
guint count;
/* QoS stuff *//* with LOCK */
gdouble proportion;
GstClockTime earliest_time;
};
struct _GstVisualClass
{
GstElementClass parent_class;
VisPluginRef *plugin;
};
GType gst_visual_get_type (void);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
@ -125,7 +62,7 @@ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
);
static void gst_visual_class_init (gpointer g_class, gpointer class_data);
static void gst_visual_init (GstVisual * visual);
static void gst_visual_finalize (GObject * object);
@ -143,8 +80,6 @@ static gboolean gst_visual_src_query (GstPad * pad, GstObject * parent,
static gboolean gst_visual_sink_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_visual_getcaps (GstPad * pad, GstCaps * filter);
static void libvisual_log_handler (const char *message, const char *funcname,
void *priv);
static GstElementClass *parent_class = NULL;
@ -171,14 +106,7 @@ gst_visual_get_type (void)
return type;
}
static void
libvisual_log_handler (const char *message, const char *funcname, void *priv)
{
GST_CAT_LEVEL_LOG (libvisual_debug, (GstDebugLevel) (priv), NULL, "%s - %s",
funcname, message);
}
static void
void
gst_visual_class_init (gpointer g_class, gpointer class_data)
{
GstVisualClass *klass = GST_VISUAL_CLASS (g_class);
@ -192,7 +120,7 @@ gst_visual_class_init (gpointer g_class, gpointer class_data)
if (class_data == NULL) {
parent_class = g_type_class_peek_parent (g_class);
} else {
char *longname = g_strdup_printf ("libvisual %s plugin v.%s",
gchar *longname = g_strdup_printf ("libvisual %s plugin v.%s",
klass->plugin->info->name, klass->plugin->info->version);
/* FIXME: improve to only register what plugin supports? */
@ -904,8 +832,8 @@ gst_visual_change_state (GstElement * element, GstStateChange transition)
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
visual->actor =
visual_actor_new (GST_VISUAL_GET_CLASS (visual)->plugin->
info->plugname);
visual_actor_new (GST_VISUAL_GET_CLASS (visual)->plugin->info->
plugname);
visual->video = visual_video_new ();
visual->audio = visual_audio_new ();
/* can't have a play without actors */
@ -963,146 +891,3 @@ no_realize:
return GST_STATE_CHANGE_FAILURE;
}
}
static void
make_valid_name (char *name)
{
/*
* Replace invalid chars with _ in the type name
*/
static const gchar extra_chars[] = "-_+";
gchar *p = name;
for (; *p; p++) {
int valid = ((p[0] >= 'A' && p[0] <= 'Z') ||
(p[0] >= 'a' && p[0] <= 'z') ||
(p[0] >= '0' && p[0] <= '9') || strchr (extra_chars, p[0]));
if (!valid)
*p = '_';
}
}
static gboolean
gst_visual_actor_plugin_is_gl (VisObject * plugin, const gchar * name)
{
gboolean is_gl;
gint depth;
#if !defined(VISUAL_API_VERSION)
depth = VISUAL_PLUGIN_ACTOR (plugin)->depth;
is_gl = (depth == VISUAL_VIDEO_DEPTH_GL);
#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
depth = VISUAL_ACTOR_PLUGIN (plugin)->vidoptions.depth;
/* FIXME: how to figure this out correctly in 0.4? */
is_gl = (depth & VISUAL_VIDEO_DEPTH_GL) == VISUAL_VIDEO_DEPTH_GL;
#else
# error what libvisual version is this?
#endif
if (!is_gl) {
GST_DEBUG ("plugin %s is not a GL plugin (%d), registering", name, depth);
} else {
GST_DEBUG ("plugin %s is a GL plugin (%d), ignoring", name, depth);
}
return is_gl;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
guint i, count;
VisList *list;
GST_DEBUG_CATEGORY_INIT (libvisual_debug, "libvisual", 0,
"libvisual audio visualisations");
#ifdef LIBVISUAL_PLUGINSBASEDIR
gst_plugin_add_dependency_simple (plugin, "HOME/.libvisual/actor",
LIBVISUAL_PLUGINSBASEDIR "/actor", NULL, GST_PLUGIN_DEPENDENCY_FLAG_NONE);
#endif
visual_log_set_verboseness (VISUAL_LOG_VERBOSENESS_LOW);
visual_log_set_info_handler (libvisual_log_handler, (void *) GST_LEVEL_INFO);
visual_log_set_warning_handler (libvisual_log_handler,
(void *) GST_LEVEL_WARNING);
visual_log_set_critical_handler (libvisual_log_handler,
(void *) GST_LEVEL_ERROR);
visual_log_set_error_handler (libvisual_log_handler,
(void *) GST_LEVEL_ERROR);
if (!visual_is_initialized ())
if (visual_init (NULL, NULL) != 0)
return FALSE;
list = visual_actor_get_list ();
#if !defined(VISUAL_API_VERSION)
count = visual_list_count (list);
#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
count = visual_collection_size (VISUAL_COLLECTION (list));
#endif
for (i = 0; i < count; i++) {
VisPluginRef *ref = visual_list_get (list, i);
VisPluginData *visplugin = NULL;
gboolean skip = FALSE;
GType type;
gchar *name;
GTypeInfo info = {
sizeof (GstVisualClass),
NULL,
NULL,
gst_visual_class_init,
NULL,
ref,
sizeof (GstVisual),
0,
NULL
};
visplugin = visual_plugin_load (ref);
if (ref->info->plugname == NULL)
continue;
/* Blacklist some plugins */
if (strcmp (ref->info->plugname, "gstreamer") == 0 ||
strcmp (ref->info->plugname, "gdkpixbuf") == 0) {
skip = TRUE;
} else {
/* Ignore plugins that only support GL output for now */
skip = gst_visual_actor_plugin_is_gl (visplugin->info->plugin,
visplugin->info->plugname);
}
visual_plugin_unload (visplugin);
if (!skip) {
name = g_strdup_printf ("GstVisual%s", ref->info->plugname);
make_valid_name (name);
type = g_type_register_static (GST_TYPE_VISUAL, name, &info, 0);
g_free (name);
name = g_strdup_printf ("libvisual_%s", ref->info->plugname);
make_valid_name (name);
if (!gst_element_register (plugin, name, GST_RANK_NONE, type)) {
g_free (name);
return FALSE;
}
g_free (name);
}
}
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
libvisual,
"libvisual visualization plugins",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

95
ext/libvisual/visual.h Normal file
View file

@ -0,0 +1,95 @@
/* GStreamer
* Copyright (C) 2004 Benjamin Otte <otte@gnome.org>
* 2012 Stefan Sauer <ensonic@users.sf.net>
*
* 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.
*/
#ifndef __GST_VISUAL_H__
#define __GST_VISUAL_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <gst/video/video.h>
#include <gst/video/gstvideopool.h>
#include <gst/audio/audio.h>
#include <libvisual/libvisual.h>
G_BEGIN_DECLS
#define GST_TYPE_VISUAL (gst_visual_get_type())
#define GST_IS_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VISUAL))
#define GST_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VISUAL,GstVisual))
#define GST_IS_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VISUAL))
#define GST_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VISUAL,GstVisualClass))
#define GST_VISUAL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_VISUAL, GstVisualClass))
typedef struct _GstVisual GstVisual;
typedef struct _GstVisualClass GstVisualClass;
struct _GstVisual
{
GstElement element;
/* pads */
GstPad *sinkpad;
GstPad *srcpad;
GstSegment segment;
/* libvisual stuff */
VisAudio *audio;
VisVideo *video;
VisActor *actor;
/* audio/video state */
GstAudioInfo info;
/* framerate numerator & denominator */
gint fps_n;
gint fps_d;
gint width;
gint height;
GstClockTime duration;
guint outsize;
GstBufferPool *pool;
/* samples per frame based on caps */
guint spf;
/* state stuff */
GstAdapter *adapter;
guint count;
/* QoS stuff *//* with LOCK */
gdouble proportion;
GstClockTime earliest_time;
};
struct _GstVisualClass
{
GstElementClass parent_class;
VisPluginRef *plugin;
};
void gst_visual_class_init (gpointer g_class, gpointer class_data);
GType gst_visual_get_type (void);
G_END_DECLS
#endif /* __GST_VISUAL_H__ */