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add initial support for libvisual (http://libvisual.sourceforge.net) libvisual is still quite alpha, so expect crashe...

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Original commit message from CVS:
* configure.ac:
* ext/Makefile.am:
* ext/libvisual/Makefile.am:
* ext/libvisual/visual.c:
add initial support for libvisual (http://libvisual.sourceforge.net)
libvisual is still quite alpha, so expect crashes in there :)
This commit is contained in:
Benjamin Otte 2004-04-30 02:25:09 +00:00
parent d74765e3fd
commit 712fde64fe
5 changed files with 403 additions and 0 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2004-04-30 Benjamin Otte <otte@gnome.org>
* configure.ac:
* ext/Makefile.am:
* ext/libvisual/Makefile.am:
* ext/libvisual/visual.c:
add initial support for libvisual (http://libvisual.sourceforge.net)
libvisual is still quite alpha, so expect crashes in there :)
2004-04-29 David Schleef <ds@schleef.org>
* gst/qtdemux/qtdemux.c: (gst_qtdemux_add_stream), (qtdemux_parse),

10
configure.ac
View file

@ -1164,6 +1164,15 @@ GST_CHECK_FEATURE(LIBRFB, [librfb Remote Framebuffer], rfbsrc, [
AC_SUBST(LIBRFB_LIBS)
])
dnl *** libvisual ***
translit(dnm, m, l) AM_CONDITIONAL(USE_LIBVISUAL, true)
GST_CHECK_FEATURE(LIBVISUAL, [libvisual visualization plugins], libvisual, [
PKG_CHECK_MODULES(LIBVISUAL, libvisual, HAVE_LIBVISUAL="yes", HAVE_LIBVISUAL="no")
AC_SUBST(LIBVISUAL_CFLAGS)
AC_SUBST(LIBVISUAL_LIBS)
])
dnl *** mad ***
dnl *** mad ***
dnl FIXME: we could use header checks here as well IMO
translit(dnm, m, l) AM_CONDITIONAL(USE_MAD, true)
@ -1809,6 +1818,7 @@ ext/libcaca/Makefile
ext/libfame/Makefile
ext/libpng/Makefile
ext/librfb/Makefile
ext/libvisual/Makefile
ext/mad/Makefile
ext/mikmod/Makefile
ext/mpeg2dec/Makefile

8
ext/Makefile.am
View file

@ -184,6 +184,12 @@ else
LIBRFB_DIR=
endif
if USE_LIBVISUAL
LIBVISUAL_DIR=libvisual
else
LIBVISUAL_DIR=
endif
if USE_MAD
MAD_DIR=mad
else
@ -360,6 +366,7 @@ SUBDIRS=\
$(LIBFAME_DIR) \
$(LIBPNG_DIR) \
$(LIBRFB_DIR) \
$(LIBVISUAL_DIR) \
$(MAD_DIR) \
$(MIKMOD_DIR) \
$(MPEG2DEC_DIR) \
@ -416,6 +423,7 @@ DIST_SUBDIRS=\
libfame \
libpng \
librfb \
libvisual \
mad \
mikmod \
mpeg2dec \

7
ext/libvisual/Makefile.am Normal file
View file

@ -0,0 +1,7 @@
plugin_LTLIBRARIES = libgstlibvisual.la
libgstlibvisual_la_SOURCES = visual.c
libgstlibvisual_la_CFLAGS = $(GST_CFLAGS) $(LIBVISUAL_CFLAGS)
libgstlibvisual_la_LIBADD = $(LIBVISUAL_LIBS)
libgstlibvisual_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)

369
ext/libvisual/visual.c Normal file
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@ -0,0 +1,369 @@
/* GStreamer
* Copyright (C) 2004 Benjamin Otte <otte@gnome.org>
*
* 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 <gst/gst.h>
#include <gst/video/video.h>
/* FIXME !
* This is a bit hacky, but we only do 1 image per incoming buffer. And since
* those buffers have undefined sizes we need to make sure we have an undefined
* framerate. */
#undef GST_VIDEO_FPS_RANGE
#define GST_VIDEO_FPS_RANGE "(double) 0"
#include <gst/audio/audio.h>
#include <libvisual/libvisual.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(obj) (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;
/* libvisual stuff */
VisAudio audio;
VisVideo *video;
VisActor *actor;
/* audio/video state */
gint rate;
gdouble fps;
gint width;
gint height;
};
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,
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRx_HOST_ENDIAN "; "
GST_VIDEO_CAPS_BGR "; " GST_VIDEO_CAPS_RGB_16)
);
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"width = (int) 16, "
"depth = (int) 16, "
"endianness = (int) BYTE_ORDER, "
"signed = (boolean) TRUE, "
"channels = (int) 2, " "rate = (int) [ 1000, MAX ]")
);
static void gst_visual_class_init (gpointer g_class, gpointer class_data);
static void gst_visual_init (GstVisual * visual);
static GstElementStateReturn gst_visual_change_state (GstElement * element);
static void gst_visual_chain (GstPad * pad, GstData * _data);
static GstPadLinkReturn gst_visual_sinklink (GstPad * pad,
const GstCaps * caps);
static GstPadLinkReturn gst_visual_srclink (GstPad * pad, const GstCaps * caps);
static GstCaps *gst_visual_getcaps (GstPad * pad);
static GstElementClass *parent_class = NULL;
GType
gst_visual_get_type (void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo info = {
sizeof (GstVisualClass),
NULL,
NULL,
gst_visual_class_init,
NULL,
NULL,
sizeof (GstVisual),
0,
(GInstanceInitFunc) gst_visual_init,
};
type = g_type_register_static (GST_TYPE_ELEMENT, "GstVisual", &info, 0);
}
return type;
}
static void
gst_visual_class_init (gpointer g_class, gpointer class_data)
{
GstVisualClass *klass = GST_VISUAL_CLASS (g_class);
GstElementClass *element = GST_ELEMENT_CLASS (klass);
klass->plugin = class_data;
element->change_state = gst_visual_change_state;
if (class_data == NULL) {
parent_class = g_type_class_peek_parent (g_class);
} else {
GstElementDetails details = {
NULL,
"Visualization",
klass->plugin->info->about,
"Benjamin Otte <otte@gnome.org>"
};
details.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? */
gst_element_class_add_pad_template (element,
gst_static_pad_template_get (&src_template));
gst_element_class_add_pad_template (element,
gst_static_pad_template_get (&sink_template));
gst_element_class_set_details (element, &details);
g_free (details.longname);
}
}
static void
gst_visual_init (GstVisual * visual)
{
/* create the sink and src pads */
visual->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get (&sink_template),
"sink");
gst_pad_set_link_function (visual->sinkpad, gst_visual_sinklink);
gst_pad_set_chain_function (visual->sinkpad, gst_visual_chain);
gst_element_add_pad (GST_ELEMENT (visual), visual->sinkpad);
visual->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get (&src_template),
"src");
gst_pad_set_link_function (visual->srcpad, gst_visual_srclink);
gst_pad_set_getcaps_function (visual->srcpad, gst_visual_getcaps);
gst_element_add_pad (GST_ELEMENT (visual), visual->srcpad);
}
static GstCaps *
gst_visual_getcaps (GstPad * pad)
{
GstCaps *ret;
GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
if (!visual->actor)
return gst_caps_copy (gst_pad_get_pad_template_caps (visual->srcpad));
ret = gst_caps_new_empty ();
if (visual_actor_depth_is_supported (visual->actor,
VISUAL_VIDEO_CONTEXT_32BIT) == 1) {
gst_caps_append (ret,
gst_caps_from_string (GST_VIDEO_CAPS_BGRx_HOST_ENDIAN));
}
if (visual_actor_depth_is_supported (visual->actor,
VISUAL_VIDEO_CONTEXT_24BIT) == 1) {
gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_BGR));
}
if (visual_actor_depth_is_supported (visual->actor,
VISUAL_VIDEO_CONTEXT_16BIT) == 1) {
gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_RGB_16));
}
return ret;
}
static GstPadLinkReturn
gst_visual_srclink (GstPad * pad, const GstCaps * caps)
{
GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
GstStructure *structure;
gint depth;
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "width", &visual->width))
return GST_PAD_LINK_REFUSED;
if (!gst_structure_get_int (structure, "height", &visual->height))
return GST_PAD_LINK_REFUSED;
if (!gst_structure_get_double (structure, "framerate", &visual->fps))
return GST_PAD_LINK_REFUSED;
if (!gst_structure_get_int (structure, "bpp", &depth))
return GST_PAD_LINK_REFUSED;
if (visual->video)
visual_video_free (visual->video);
visual->video = visual_video_new ();
visual_actor_set_video (visual->actor, visual->video);
visual_video_set_opts (visual->video, "depth",
visual_video_depth_enum_from_value (depth));
visual_video_set_dimension (visual->video, visual->width, visual->height);
visual_actor_video_negotiate (visual->actor);
return GST_PAD_LINK_OK;
}
static GstPadLinkReturn
gst_visual_sinklink (GstPad * pad, const GstCaps * caps)
{
GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
GstStructure *structure;
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "rate", &visual->rate);
return GST_PAD_LINK_OK;
}
static void
gst_visual_chain (GstPad * pad, GstData * _data)
{
GstBuffer *ret, *buffer = GST_BUFFER (_data);
guint i, size = GST_BUFFER_SIZE (buffer) / 4;
guint16 *data = (guint16 *) GST_BUFFER_DATA (buffer);
GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
if (size < 512) {
/* FIXME */
GST_WARNING_OBJECT (visual, "incoming buffer to small, discarding.");
gst_data_unref (_data);
return;
}
for (i = 0; i < 512; i++) {
visual->audio.plugpcm[0][i] = *data++;
visual->audio.plugpcm[1][i] = *data++;
}
ret = gst_pad_alloc_buffer (visual->srcpad, GST_BUFFER_OFFSET_NONE,
visual->video->width * visual->video->width * visual->video->bpp);
visual_video_set_buffer (visual->video, GST_BUFFER_DATA (ret));
visual_actor_run (visual->actor, &visual->audio);
GST_BUFFER_TIMESTAMP (ret) = GST_BUFFER_TIMESTAMP (buffer);
GST_BUFFER_DURATION (ret) = GST_SECOND / visual->fps;
gst_data_unref (_data);
gst_pad_push (visual->srcpad, GST_DATA (ret));
/* so we're on the safe side */
visual_video_set_buffer (visual->video, NULL);
}
static GstElementStateReturn
gst_visual_change_state (GstElement * element)
{
GstVisual *visual = GST_VISUAL (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
visual->actor =
visual_actor_new (GST_VISUAL_GET_CLASS (visual)->plugin->name);
if (!visual->actor)
return GST_STATE_FAILURE;
if (visual_actor_realize (visual->actor) != 0) {
visual_actor_free (visual->actor);
visual->actor = NULL;
return GST_STATE_FAILURE;
}
break;
case GST_STATE_READY_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
break;
case GST_STATE_READY_TO_NULL:
visual_actor_destroy (visual->actor);
visual->actor = NULL;
break;
default:
g_assert_not_reached ();
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
guint i;
VisList *list;
if (visual_init (NULL, NULL) != 0)
return FALSE;
list = visual_actor_get_list ();
for (i = 0; i < visual_list_count (list); i++) {
VisPluginRef *ref = visual_list_get (list, i);
GType type;
gchar *name;
GTypeInfo info = {
sizeof (GstVisualClass),
NULL,
NULL,
gst_visual_class_init,
NULL,
ref,
sizeof (GstVisual),
0,
NULL
};
if (ref->name == NULL)
continue;
name = g_strdup_printf ("GstVisual%s", ref->name);
type = g_type_register_static (GST_TYPE_VISUAL, name, &info, 0);
g_free (name);
name = g_strdup_printf ("libvisual_%s", ref->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, GST_ORIGIN)