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f7b69d5233
git-svn-id: svn://svn.wobow.com/GStreamer_playground/gst-plugins-gl@496 93df14bb-0f41-7a43-8087-d3e2a2f0e464
345 lines
11 KiB
C
345 lines
11 KiB
C
/*
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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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#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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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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/* 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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};
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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* trans,
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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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}
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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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{
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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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{
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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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if (graphicmaker->display)
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{
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g_object_unref (graphicmaker->display);
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graphicmaker->display = NULL;
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}
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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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//GstGLGraphicmaker* graphicmaker = GST_GL_GRAPHICMAKER (bt);
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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 = GST_GL_GRAPHICMAKER (bt);
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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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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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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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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 = GST_GL_GRAPHICMAKER (bt);
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gboolean ret = FALSE;
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static gint glcontext_y = 0;
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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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if (!ret)
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{
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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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//init unvisible opengl context
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gst_gl_display_initGLContext (graphicmaker->display,
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50, glcontext_y++ * (graphicmaker->height+50) + 50,
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graphicmaker->width, graphicmaker->height,
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graphicmaker->width, graphicmaker->height, 0, FALSE);
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return ret;
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}
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static gboolean
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gst_gl_graphicmaker_get_unit_size (GstBaseTransform* trans, GstCaps* caps,
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guint* size)
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{
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gboolean ret;
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GstStructure *structure;
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gint width;
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gint height;
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structure = gst_caps_get_structure (caps, 0);
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if (gst_structure_has_name (structure, "video/x-raw-gl"))
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{
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GstVideoFormat video_format;
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ret = gst_gl_buffer_format_parse_caps (caps, &video_format, &width, &height);
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if (ret)
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*size = gst_gl_buffer_format_get_size (video_format, width, height);
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}
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else
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{
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GstVideoFormat video_format;
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ret = gst_video_format_parse_caps (caps, &video_format, &width, &height);
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if (ret)
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*size = gst_video_format_get_size (video_format, width, height);
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}
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return TRUE;
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}
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static GstFlowReturn
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gst_gl_graphicmaker_prepare_output_buffer (GstBaseTransform* trans,
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GstBuffer* input, gint size, GstCaps* caps, GstBuffer** buf)
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{
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GstGLGraphicmaker* graphicmaker;
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GstGLBuffer* gl_outbuf;
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graphicmaker = GST_GL_GRAPHICMAKER (trans);
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//blocking call
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gl_outbuf = gst_gl_buffer_new_from_video_format (graphicmaker->display,
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graphicmaker->video_format,
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graphicmaker->width, graphicmaker->height,
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graphicmaker->width, graphicmaker->height);
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*buf = GST_BUFFER (gl_outbuf);
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gst_buffer_set_caps (*buf, caps);
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_gl_graphicmaker_transform (GstBaseTransform* trans, GstBuffer* inbuf,
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GstBuffer* outbuf)
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{
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GstGLGraphicmaker* graphicmaker;
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GstGLBuffer* gl_outbuf = GST_GL_BUFFER (outbuf);
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guint outputTexture = 0;
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graphicmaker = GST_GL_GRAPHICMAKER (trans);
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GST_DEBUG ("making graphic %p size %d",
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GST_BUFFER_DATA (inbuf), GST_BUFFER_SIZE (inbuf));
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//blocking call
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gst_gl_display_textureChanged(graphicmaker->display, graphicmaker->video_format,
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gl_outbuf->texture, gl_outbuf->texture_u, gl_outbuf->texture_v,
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gl_outbuf->width, gl_outbuf->height, GST_BUFFER_DATA (inbuf), &gl_outbuf->textureGL);
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return GST_FLOW_OK;
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}
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