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[143/906] Add init and reset callbacks in GstGLFilter to run arbitrary gl code at start and stop. Useful to init and cleanup custom gl resources.

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Filippo Argiolas 2008-08-11 09:52:16 +02:00 committed by Matthew Waters
parent 396afd5ef3
commit b0f30ff125
5 changed files with 236 additions and 173 deletions
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1
gst-libs/gst/gl/gstgldisplay.c
View file

@ -1,6 +1,7 @@
/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public

1
gst-libs/gst/gl/gstgldisplay.h
View file

@ -1,6 +1,7 @@
/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public

31
gst-libs/gst/gl/gstglfilter.c
View file

@ -1,6 +1,7 @@
/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -68,6 +69,9 @@ static gboolean gst_gl_filter_set_caps (GstBaseTransform * bt, GstCaps * incaps,
GstCaps * outcaps);
static gboolean gst_gl_filter_do_transform (GstGLFilter * filter,
GstGLBuffer * inbuf, GstGLBuffer * outbuf);
/* GstGLDisplayThreadFunc */
static void gst_gl_filter_start_gl (GstGLDisplay *display, gpointer data);
static void gst_gl_filter_stop_gl (GstGLDisplay *display, gpointer data);
static void
@ -102,6 +106,8 @@ gst_gl_filter_class_init (GstGLFilterClass * klass)
klass->set_caps = NULL;
klass->filter = NULL;
klass->display_init_cb = NULL;
klass->display_reset_cb = NULL;
klass->onInitFBO = NULL;
klass->onReset = NULL;
}
@ -155,6 +161,9 @@ gst_gl_filter_reset (GstGLFilter* filter)
if (filter->display)
{
if (filter_class->display_reset_cb != NULL) {
gst_gl_display_thread_add (filter->display, gst_gl_filter_stop_gl, filter);
}
//blocking call, delete the FBO
gst_gl_display_del_fbo (filter->display, filter->fbo,
filter->depthbuffer);
@ -183,6 +192,24 @@ gst_gl_filter_stop (GstBaseTransform* bt)
return TRUE;
}
static void
gst_gl_filter_start_gl (GstGLDisplay *display, gpointer data)
{
GstGLFilter *filter = GST_GL_FILTER (data);
GstGLFilterClass *filter_class = GST_GL_FILTER_GET_CLASS (filter);
filter_class->display_init_cb (filter);
}
static void
gst_gl_filter_stop_gl (GstGLDisplay *display, gpointer data)
{
GstGLFilter *filter = GST_GL_FILTER (data);
GstGLFilterClass *filter_class = GST_GL_FILTER_GET_CLASS (filter);
filter_class->display_reset_cb (filter);
}
static GstCaps*
gst_gl_filter_transform_caps (GstBaseTransform* bt,
GstPadDirection direction, GstCaps* caps)
@ -250,6 +277,10 @@ gst_gl_filter_prepare_output_buffer (GstBaseTransform* trans,
gst_gl_display_gen_fbo (filter->display, filter->width, filter->height,
&filter->fbo, &filter->depthbuffer);
if (filter_class->display_init_cb != NULL) {
gst_gl_display_thread_add (filter->display, gst_gl_filter_start_gl, filter);
}
if (filter_class->onInitFBO)
filter_class->onInitFBO (filter);
}

9
gst-libs/gst/gl/gstglfilter.h
View file

@ -1,6 +1,7 @@
/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -46,6 +47,9 @@ typedef gboolean (*GstGLFilterProcessFunc) (GstGLFilter *filter,
typedef void (*GstGLFilterOnInitFBO) (GstGLFilter *filter);
typedef void (*GstGLFilterOnReset) (GstGLFilter *filter);
typedef void (*GstGLFilterGLStartFunc) (GstGLFilter *filter);
typedef void (*GstGLFilterGLStopFunc) (GstGLFilter *filter);
struct _GstGLFilter
{
GstBaseTransform base_transform;
@ -67,7 +71,12 @@ struct _GstGLFilterClass
GstGLFilterSetCaps set_caps;
GstGLFilterProcessFunc filter;
GstGLFilterOnInitFBO onInitFBO;
GstGLFilterOnReset onReset;
/* useful to init and cleanup custom gl resources */
GstGLFilterGLStartFunc display_init_cb; /* run arbitrary gl code at start */
GstGLFilterGLStopFunc display_reset_cb; /* run arbitrary gl code at stop */
};
GType gst_gl_filter_get_type(void);

21
gst/gl/gstglfilterblur.c
View file

@ -94,6 +94,25 @@ static gboolean gst_gl_filterblur_filter (GstGLFilter * filter,
static void gst_gl_filterblur_hcallback (gint width, gint height, guint texture, gpointer stuff);
static void gst_gl_filterblur_vcallback (gint width, gint height, guint texture, gpointer stuff);
static void
gst_gl_filterblur_init_resources (GstGLFilter *filter)
{
// GstGLFilterBlur *filterblur = GST_GL_FILTERBLUR (filter);
/* dummy gl call to test if we really are in a gl context */
g_print ("\nStart!!!: %s\n\n", glGetString (GL_VERSION));
}
static void
gst_gl_filterblur_reset_resources (GstGLFilter *filter)
{
// GstGLFilterBlur *filterblur = GST_GL_FILTERBLUR (filter);
/* dummy gl call to test if we really are in a gl context */
g_print ("\nStop!!!: %s\n\n", glGetString (GL_VENDOR));
}
static void
gst_gl_filterblur_base_init (gpointer klass)
{
@ -112,6 +131,8 @@ gst_gl_filterblur_class_init (GstGLFilterBlurClass * klass)
gobject_class->get_property = gst_gl_filterblur_get_property;
GST_GL_FILTER_CLASS (klass)->filter = gst_gl_filterblur_filter;
GST_GL_FILTER_CLASS (klass)->display_init_cb = gst_gl_filterblur_init_resources;
GST_GL_FILTER_CLASS (klass)->display_reset_cb = gst_gl_filterblur_reset_resources;
GST_GL_FILTER_CLASS (klass)->onInitFBO = gst_gl_filterblur_init_shader;
GST_GL_FILTER_CLASS (klass)->onReset = gst_gl_filter_filterblur_reset;
}