2008-05-19 16:57:39 +00:00
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/*
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* GStreamer
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* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
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*
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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 Library 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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*
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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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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2008-05-18 11:12:46 +00:00
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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 "gstglgraphicmaker.h"
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#define GST_CAT_DEFAULT gst_gl_graphicmaker_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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2008-05-19 16:57:39 +00:00
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static const GstElementDetails element_details =
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GST_ELEMENT_DETAILS ("OpenGL graphic maker",
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"Filter/Effect",
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"A from video to GL flow filter",
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"Julien Isorce <julien.isorce@gmail.com>");
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2008-05-18 11:12:46 +00:00
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/* Source pad definition */
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static GstStaticPadTemplate gst_gl_graphicmaker_src_pad_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_GL_VIDEO_CAPS)
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);
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/* Source pad definition */
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static GstStaticPadTemplate gst_gl_graphicmaker_sink_pad_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx ";"
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GST_VIDEO_CAPS_BGRx ";"
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GST_VIDEO_CAPS_xRGB ";"
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GST_VIDEO_CAPS_xBGR ";"
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GST_VIDEO_CAPS_YUV ("{ I420, YV12, YUY2, UYVY, AYUV }"))
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);
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/* Properties */
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enum
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{
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PROP_0,
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PROP_GLCONTEXT_WIDTH,
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PROP_GLCONTEXT_HEIGHT,
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PROP_CLIENT_RESHAPE_CALLBACK,
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PROP_CLIENT_DRAW_CALLBACK
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};
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#define DEBUG_INIT(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_gl_graphicmaker_debug, "glgraphicmaker", 0, "glgraphicmaker element");
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GST_BOILERPLATE_FULL (GstGLGraphicmaker, gst_gl_graphicmaker, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
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static void gst_gl_graphicmaker_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_gl_graphicmaker_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_gl_graphicmaker_reset (GstGLGraphicmaker* graphicmaker);
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static gboolean gst_gl_graphicmaker_set_caps (GstBaseTransform * bt,
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GstCaps * incaps, GstCaps * outcaps);
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static GstCaps *gst_gl_graphicmaker_transform_caps (GstBaseTransform * bt,
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GstPadDirection direction, GstCaps * caps);
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static gboolean gst_gl_graphicmaker_start (GstBaseTransform * bt);
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static gboolean gst_gl_graphicmaker_stop (GstBaseTransform * bt);
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static GstFlowReturn gst_gl_graphicmaker_prepare_output_buffer (GstBaseTransform *
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trans, GstBuffer * input, gint size, GstCaps * caps, GstBuffer ** buf);
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static GstFlowReturn gst_gl_graphicmaker_transform (GstBaseTransform * trans,
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GstBuffer * inbuf, GstBuffer * outbuf);
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static gboolean gst_gl_graphicmaker_get_unit_size (GstBaseTransform * trans,
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GstCaps * caps, guint * size);
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static void
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gst_gl_graphicmaker_base_init (gpointer klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_set_details (element_class, &element_details);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_gl_graphicmaker_src_pad_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_gl_graphicmaker_sink_pad_template));
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}
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static void
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gst_gl_graphicmaker_class_init (GstGLGraphicmakerClass * klass)
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{
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GObjectClass *gobject_class;
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gobject_class = (GObjectClass *) klass;
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gobject_class->set_property = gst_gl_graphicmaker_set_property;
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gobject_class->get_property = gst_gl_graphicmaker_get_property;
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GST_BASE_TRANSFORM_CLASS (klass)->transform_caps =
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gst_gl_graphicmaker_transform_caps;
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GST_BASE_TRANSFORM_CLASS (klass)->transform = gst_gl_graphicmaker_transform;
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GST_BASE_TRANSFORM_CLASS (klass)->start = gst_gl_graphicmaker_start;
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GST_BASE_TRANSFORM_CLASS (klass)->stop = gst_gl_graphicmaker_stop;
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GST_BASE_TRANSFORM_CLASS (klass)->set_caps = gst_gl_graphicmaker_set_caps;
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GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size = gst_gl_graphicmaker_get_unit_size;
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GST_BASE_TRANSFORM_CLASS (klass)->prepare_output_buffer =
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gst_gl_graphicmaker_prepare_output_buffer;
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g_object_class_install_property (gobject_class, PROP_GLCONTEXT_WIDTH,
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g_param_spec_int ("glcontext_width", "OpenGL context width",
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"Change the opengl context width", 0, INT_MAX, 0,
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G_PARAM_WRITABLE));
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g_object_class_install_property (gobject_class, PROP_GLCONTEXT_HEIGHT,
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g_param_spec_int ("glcontext_height", "OpenGL context height",
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"Change the opengl context height", 0, INT_MAX, 0,
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G_PARAM_WRITABLE));
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g_object_class_install_property (gobject_class, PROP_CLIENT_RESHAPE_CALLBACK,
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g_param_spec_pointer ("client_reshape_callback", "Client reshape callback",
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"Executed in next glut loop iteration when window size is changed",
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G_PARAM_WRITABLE));
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g_object_class_install_property (gobject_class, PROP_CLIENT_DRAW_CALLBACK,
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g_param_spec_pointer ("client_draw_callback", "Client draw callback",
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"Executed in next glut loop iteration when glutPostRedisplay is called",
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G_PARAM_WRITABLE));
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}
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static void
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gst_gl_graphicmaker_init (GstGLGraphicmaker* graphicmaker, GstGLGraphicmakerClass * klass)
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{
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gst_gl_graphicmaker_reset (graphicmaker);
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}
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static void
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gst_gl_graphicmaker_set_property (GObject* object, guint prop_id,
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const GValue* value, GParamSpec* pspec)
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{
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GstGLGraphicmaker* graphicmaker = GST_GL_GRAPHICMAKER (object);
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switch (prop_id) {
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case PROP_GLCONTEXT_WIDTH:
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{
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graphicmaker->glcontext_width = g_value_get_int (value);
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break;
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}
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case PROP_GLCONTEXT_HEIGHT:
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{
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graphicmaker->glcontext_height = g_value_get_int (value);
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break;
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}
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case PROP_CLIENT_RESHAPE_CALLBACK:
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{
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graphicmaker->clientReshapeCallback = g_value_get_pointer (value);
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break;
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}
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case PROP_CLIENT_DRAW_CALLBACK:
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{
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graphicmaker->clientDrawCallback = g_value_get_pointer (value);
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break;
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}
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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 void
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gst_gl_graphicmaker_get_property (GObject* object, guint prop_id,
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GValue* value, GParamSpec* pspec)
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{
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//GstGLGraphicmaker *graphicmaker = GST_GL_GRAPHICMAKER (object);
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switch (prop_id) {
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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 void
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gst_gl_graphicmaker_reset (GstGLGraphicmaker* graphicmaker)
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{
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2008-06-07 00:01:18 +00:00
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if (graphicmaker->display)
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{
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2008-05-18 11:12:46 +00:00
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g_object_unref (graphicmaker->display);
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graphicmaker->display = NULL;
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}
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graphicmaker->peek = FALSE;
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graphicmaker->glcontext_width = 0;
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graphicmaker->glcontext_height = 0;
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graphicmaker->clientReshapeCallback = NULL;
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graphicmaker->clientDrawCallback = NULL;
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}
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static gboolean
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gst_gl_graphicmaker_start (GstBaseTransform * bt)
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{
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2008-05-18 19:18:04 +00:00
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//GstGLGraphicmaker* graphicmaker = GST_GL_GRAPHICMAKER (bt);
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2008-05-18 11:12:46 +00:00
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return TRUE;
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}
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static gboolean
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gst_gl_graphicmaker_stop (GstBaseTransform * bt)
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{
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GstGLGraphicmaker* graphicmaker = GST_GL_GRAPHICMAKER (bt);
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gst_gl_graphicmaker_reset (graphicmaker);
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return TRUE;
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}
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static GstCaps *
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gst_gl_graphicmaker_transform_caps (GstBaseTransform * bt,
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GstPadDirection direction, GstCaps * caps)
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{
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GstGLGraphicmaker* graphicmaker;
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GstStructure* structure;
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GstCaps* newcaps, *newothercaps;
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GstStructure* newstruct;
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const GValue* width_value;
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const GValue* height_value;
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const GValue* framerate_value;
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const GValue* par_value;
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graphicmaker = GST_GL_GRAPHICMAKER (bt);
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GST_ERROR ("transform caps %" GST_PTR_FORMAT, caps);
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structure = gst_caps_get_structure (caps, 0);
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width_value = gst_structure_get_value (structure, "width");
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height_value = gst_structure_get_value (structure, "height");
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framerate_value = gst_structure_get_value (structure, "framerate");
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par_value = gst_structure_get_value (structure, "pixel-aspect-ratio");
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if (direction == GST_PAD_SRC)
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{
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newothercaps = gst_caps_new_simple ("video/x-raw-rgb", NULL);
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newstruct = gst_caps_get_structure (newothercaps, 0);
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gst_structure_set_value (newstruct, "width", width_value);
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gst_structure_set_value (newstruct, "height", height_value);
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gst_structure_set_value (newstruct, "framerate", framerate_value);
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if (par_value)
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gst_structure_set_value (newstruct, "pixel-aspect-ratio", par_value);
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else
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gst_structure_set (newstruct, "pixel-aspect-ratio", GST_TYPE_FRACTION,
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1, 1, NULL);
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newcaps = gst_caps_new_simple ("video/x-raw-yuv", NULL);
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gst_caps_append(newcaps, newothercaps);
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newstruct = gst_caps_get_structure (newcaps, 0);
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gst_structure_set_value (newstruct, "width", width_value);
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gst_structure_set_value (newstruct, "height", height_value);
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}
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else
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{
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newcaps = gst_caps_new_simple ("video/x-raw-gl", NULL);
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newstruct = gst_caps_get_structure (newcaps, 0);
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if (graphicmaker->glcontext_width != 0 && graphicmaker->glcontext_height != 0)
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{
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GValue value_w = { 0 };
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GValue value_h = { 0 };
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g_value_init (&value_w, G_TYPE_INT);
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g_value_init (&value_h, G_TYPE_INT);
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g_value_set_int (&value_w, graphicmaker->glcontext_width);
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g_value_set_int (&value_h, graphicmaker->glcontext_height);
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gst_structure_set_value (newstruct, "width", &value_w);
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gst_structure_set_value (newstruct, "height", &value_h);
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g_value_unset (&value_w);
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g_value_unset (&value_h);
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}
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else
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{
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gst_structure_set_value (newstruct, "width", width_value);
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gst_structure_set_value (newstruct, "height", height_value);
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}
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}
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gst_structure_set_value (newstruct, "framerate", framerate_value);
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if (par_value)
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gst_structure_set_value (newstruct, "pixel-aspect-ratio", par_value);
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else
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gst_structure_set (newstruct, "pixel-aspect-ratio", GST_TYPE_FRACTION,
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1, 1, NULL);
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GST_ERROR ("new caps %" GST_PTR_FORMAT, newcaps);
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return newcaps;
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}
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static gboolean
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gst_gl_graphicmaker_set_caps (GstBaseTransform* bt, GstCaps* incaps,
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GstCaps* outcaps)
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{
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GstGLGraphicmaker* graphicmaker;
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gboolean ret;
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graphicmaker = GST_GL_GRAPHICMAKER (bt);
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GST_DEBUG ("called with %" GST_PTR_FORMAT, incaps);
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ret = gst_video_format_parse_caps (incaps, &graphicmaker->video_format,
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&graphicmaker->width, &graphicmaker->height);
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2008-06-07 00:01:18 +00:00
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if (!ret)
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{
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2008-05-18 11:12:46 +00:00
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GST_DEBUG ("bad caps");
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return FALSE;
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}
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graphicmaker->display = gst_gl_display_new ();
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//client opengl context size
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if (graphicmaker->glcontext_width != 0 && graphicmaker->glcontext_height != 0)
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gst_gl_display_initGLContext (graphicmaker->display, 0, 0,
|
|
|
|
graphicmaker->glcontext_width, graphicmaker->glcontext_height,
|
|
|
|
graphicmaker->width, graphicmaker->height, 0, FALSE);
|
|
|
|
//default opengl context size
|
|
|
|
else
|
|
|
|
{
|
|
|
|
//init unvisible opengl context
|
|
|
|
static gint glcontext_y = 0;
|
|
|
|
gst_gl_display_initGLContext (graphicmaker->display,
|
|
|
|
50, glcontext_y++ * (graphicmaker->height+50) + 50,
|
|
|
|
graphicmaker->width, graphicmaker->height,
|
|
|
|
graphicmaker->width, graphicmaker->height, 0, FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
//set the client reshape callback
|
|
|
|
gst_gl_display_setClientReshapeCallback (graphicmaker->display,
|
|
|
|
graphicmaker->clientReshapeCallback);
|
|
|
|
|
|
|
|
//set the client draw callback
|
|
|
|
gst_gl_display_setClientDrawCallback (graphicmaker->display,
|
|
|
|
graphicmaker->clientDrawCallback);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
gst_gl_graphicmaker_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
|
|
|
|
guint * size)
|
|
|
|
{
|
|
|
|
gboolean ret;
|
|
|
|
GstStructure *structure;
|
|
|
|
gint width;
|
|
|
|
gint height;
|
|
|
|
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
if (gst_structure_has_name (structure, "video/x-raw-gl"))
|
|
|
|
{
|
|
|
|
GstVideoFormat video_format;
|
|
|
|
|
|
|
|
ret = gst_gl_buffer_format_parse_caps (caps, &video_format, &width, &height);
|
|
|
|
if (ret)
|
|
|
|
*size = gst_gl_buffer_format_get_size (video_format, width, height);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
GstVideoFormat video_format;
|
|
|
|
|
|
|
|
ret = gst_video_format_parse_caps (caps, &video_format, &width, &height);
|
|
|
|
if (ret)
|
|
|
|
*size = gst_video_format_get_size (video_format, width, height);
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static GstFlowReturn
|
|
|
|
gst_gl_graphicmaker_prepare_output_buffer (GstBaseTransform* trans,
|
|
|
|
GstBuffer* input, gint size, GstCaps* caps, GstBuffer** buf)
|
|
|
|
{
|
|
|
|
GstGLGraphicmaker* graphicmaker;
|
|
|
|
GstGLBuffer* gl_outbuf;
|
|
|
|
|
|
|
|
graphicmaker = GST_GL_GRAPHICMAKER (trans);
|
|
|
|
|
|
|
|
//blocking call
|
|
|
|
|
|
|
|
//client opengl context size
|
|
|
|
if (graphicmaker->glcontext_width != 0 && graphicmaker->glcontext_height != 0)
|
|
|
|
gl_outbuf = gst_gl_buffer_new_from_video_format (graphicmaker->display,
|
|
|
|
graphicmaker->video_format,
|
|
|
|
graphicmaker->glcontext_width, graphicmaker->glcontext_height,
|
|
|
|
graphicmaker->width, graphicmaker->height);
|
|
|
|
//default opengl context size
|
|
|
|
else
|
|
|
|
gl_outbuf = gst_gl_buffer_new_from_video_format (graphicmaker->display,
|
|
|
|
graphicmaker->video_format,
|
|
|
|
graphicmaker->width, graphicmaker->height,
|
|
|
|
graphicmaker->width, graphicmaker->height);
|
|
|
|
*buf = GST_BUFFER (gl_outbuf);
|
|
|
|
gst_buffer_set_caps (*buf, caps);
|
|
|
|
|
|
|
|
return GST_FLOW_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static GstFlowReturn
|
|
|
|
gst_gl_graphicmaker_transform (GstBaseTransform* trans, GstBuffer* inbuf,
|
|
|
|
GstBuffer* outbuf)
|
|
|
|
{
|
|
|
|
GstGLGraphicmaker* graphicmaker;
|
|
|
|
GstGLBuffer* gl_outbuf = GST_GL_BUFFER (outbuf);
|
|
|
|
|
|
|
|
graphicmaker = GST_GL_GRAPHICMAKER (trans);
|
|
|
|
|
|
|
|
GST_DEBUG ("making graphic %p size %d",
|
|
|
|
GST_BUFFER_DATA (inbuf), GST_BUFFER_SIZE (inbuf));
|
|
|
|
|
|
|
|
//blocking call
|
|
|
|
gst_gl_display_textureChanged(graphicmaker->display, graphicmaker->video_format,
|
|
|
|
gl_outbuf->texture, gl_outbuf->texture_u, gl_outbuf->texture_v,
|
|
|
|
gl_outbuf->width, gl_outbuf->height, GST_BUFFER_DATA (inbuf));
|
|
|
|
|
|
|
|
return GST_FLOW_OK;
|
|
|
|
}
|