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2eb9cb551c
The external opengl context must be specify when creating our OpenGL context (glx) or just after (wgl). When calling glXCreateContext or wglShareLists, the external opengl context must not be current. Then our gl context can be current in the gl thread while the external gl context is current in an other thread. See tests/examples/clutter/cluttershare.c
286 lines
8.3 KiB
C
286 lines
8.3 KiB
C
/*
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* GStreamer
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* Copyright (C) 2007 David A. Schleef <ds@schleef.org>
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* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
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* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@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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#ifndef __GST_GL_H__
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#define __GST_GL_H__
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#include <gst/video/video.h>
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#include "gstglwindow.h"
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#include "gstglshader.h"
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#define GST_TYPE_GL_DISPLAY \
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(gst_gl_display_get_type())
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#define GST_GL_DISPLAY(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_DISPLAY,GstGLDisplay))
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#define GST_GL_DISPLAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GL_DISPLAY,GstGLDisplayClass))
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#define GST_IS_GL_DISPLAY(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_DISPLAY))
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#define GST_IS_GL_DISPLAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GL_DISPLAY))
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typedef struct _GstGLDisplay GstGLDisplay;
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typedef struct _GstGLDisplayClass GstGLDisplayClass;
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//Color space conversion method
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typedef enum
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{
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GST_GL_DISPLAY_CONVERSION_GLSL, //ARB_fragment_shade
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GST_GL_DISPLAY_CONVERSION_MATRIX, //ARB_imaging
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GST_GL_DISPLAY_CONVERSION_MESA, //MESA_ycbcr_texture
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} GstGLDisplayConversion;
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//Projection type
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typedef enum
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{
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GST_GL_DISPLAY_PROJECTION_ORTHO2D,
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GST_GL_DISPLAY_PROJECTION_PERSPECIVE
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} GstGLDisplayProjection;
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//Texture pool elements
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typedef struct _GstGLDisplayTex
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{
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GLuint texture;
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} GstGLDisplayTex;
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//Client callbacks
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typedef void (*CRCB) (GLuint, GLuint);
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typedef gboolean (*CDCB) (GLuint, GLuint, GLuint);
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typedef void (*GstGLDisplayThreadFunc) (GstGLDisplay * display, gpointer data);
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//opengl scene callback
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typedef void (*GLCB) (gint, gint, guint, gpointer stuff);
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struct _GstGLDisplay
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{
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GObject object;
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//thread safe
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GMutex *mutex;
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//gl context
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GThread *gl_thread;
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GstGLWindow *gl_window;
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gboolean visible;
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gboolean isAlive;
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GHashTable *texture_pool;
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//conditions
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GCond *cond_create_context;
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GCond *cond_destroy_context;
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//generic gl code
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GstGLDisplayThreadFunc generic_callback;
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gpointer data;
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//action redisplay
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GLuint redisplay_texture;
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GLuint redisplay_texture_width;
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GLuint redisplay_texture_height;
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#ifdef OPENGL_ES2
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GstGLShader *redisplay_shader;
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gchar *redisplay_vertex_shader_str;
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gchar *redisplay_fragment_shader_str;
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GLint redisplay_attr_position_loc;
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GLint redisplay_attr_texture_loc;
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#endif
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//action gen and del texture
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GLuint gen_texture;
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GLuint gen_texture_width;
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GLuint gen_texture_height;
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GLuint del_texture;
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GLuint del_texture_width;
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GLuint del_texture_height;
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//client callbacks
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CRCB clientReshapeCallback;
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CDCB clientDrawCallback;
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//upload
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GLuint upload_fbo;
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GLuint upload_depth_buffer;
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GLuint upload_outtex;
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GLuint upload_intex;
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GLuint upload_intex_u;
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GLuint upload_intex_v;
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GLuint upload_width;
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GLuint upload_height;
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GstVideoFormat upload_video_format;
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GstGLDisplayConversion upload_colorspace_conversion;
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gint upload_data_width;
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gint upload_data_height;
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gpointer upload_data;
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//foreign gl context
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guint64 external_gl_context;
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//filter gen fbo
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GLuint gen_fbo_width;
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GLuint gen_fbo_height;
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GLuint generated_fbo;
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GLuint generated_depth_buffer;
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//filter use fbo
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GLuint use_fbo;
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GLuint use_depth_buffer;
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GLuint use_fbo_texture;
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GLuint use_fbo_width;
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GLuint use_fbo_height;
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GLCB use_fbo_scene_cb;
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gdouble use_fbo_proj_param1;
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gdouble use_fbo_proj_param2;
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gdouble use_fbo_proj_param3;
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gdouble use_fbo_proj_param4;
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GstGLDisplayProjection use_fbo_projection;
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gpointer *use_fbo_stuff;
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GLuint input_texture_width;
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GLuint input_texture_height;
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GLuint input_texture;
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//filter del fbo
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GLuint del_fbo;
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GLuint del_depth_buffer;
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//download
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GLuint download_fbo;
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GLuint download_depth_buffer;
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GLuint download_texture;
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GLuint download_texture_u;
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GLuint download_texture_v;
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gint download_width;
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gint download_height;
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GstVideoFormat download_video_format;
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gpointer download_data;
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GLenum multipleRT[3];
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GLuint ouput_texture;
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GLuint ouput_texture_width;
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GLuint ouput_texture_height;
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//action gen and del shader
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const gchar *gen_shader_fragment_source;
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const gchar *gen_shader_vertex_source;
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GstGLShader *gen_shader;
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GstGLShader *del_shader;
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//fragement shader upload
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gchar *text_shader_upload_YUY2_UYVY;
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GstGLShader *shader_upload_YUY2;
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GstGLShader *shader_upload_UYVY;
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gchar *text_shader_upload_I420_YV12;
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GstGLShader *shader_upload_I420_YV12;
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gchar *text_shader_upload_AYUV;
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GstGLShader *shader_upload_AYUV;
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#ifdef OPENGL_ES2
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gchar *text_vertex_shader_upload;
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GLint shader_upload_attr_position_loc;
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GLint shader_upload_attr_texture_loc;
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#endif
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//fragement shader download
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gchar *text_shader_download_YUY2_UYVY;
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GstGLShader *shader_download_YUY2;
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GstGLShader *shader_download_UYVY;
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gchar *text_shader_download_I420_YV12;
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GstGLShader *shader_download_I420_YV12;
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gchar *text_shader_download_AYUV;
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GstGLShader *shader_download_AYUV;
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#ifdef OPENGL_ES2
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gchar *text_vertex_shader_download;
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GLint shader_download_attr_position_loc;
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GLint shader_download_attr_texture_loc;
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gchar *text_fragment_shader_download_RGB;
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GstGLShader *shader_download_RGB;
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#endif
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};
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struct _GstGLDisplayClass
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{
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GObjectClass object_class;
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};
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GType gst_gl_display_get_type (void);
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//------------------------------------------------------------
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//-------------------- Public declarations ------------------
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//------------------------------------------------------------
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GstGLDisplay *gst_gl_display_new (void);
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void gst_gl_display_create_context (GstGLDisplay * display,
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GLint width, GLint height, guint64 external_gl_context);
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gboolean gst_gl_display_redisplay (GstGLDisplay * display, GLuint texture,
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gint width, gint height);
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void gst_gl_display_thread_add (GstGLDisplay * display,
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GstGLDisplayThreadFunc func, gpointer data);
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void gst_gl_display_gen_texture (GstGLDisplay * display, GLuint * pTexture,
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GLint width, GLint height);
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void gst_gl_display_del_texture (GstGLDisplay * display, GLuint texture,
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GLint width, GLint height);
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void gst_gl_display_init_upload (GstGLDisplay * display,
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GstVideoFormat video_format, guint gl_width, guint gl_height,
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gint video_width, gint video_height);
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gboolean gst_gl_display_do_upload (GstGLDisplay * display, GLuint texture,
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gint data_width, gint data_height, gpointer data);
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void gst_gl_display_init_download (GstGLDisplay * display,
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GstVideoFormat video_format, gint width, gint height);
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gboolean gst_gl_display_do_download (GstGLDisplay * display, GLuint texture,
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gint width, gint height, gpointer data);
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void gst_gl_display_gen_fbo (GstGLDisplay * display, gint width, gint height,
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GLuint * fbo, GLuint * depthbuffer);
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gboolean gst_gl_display_use_fbo (GstGLDisplay * display, gint texture_fbo_width,
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gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
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GLuint texture_fbo, GLCB cb, gint input_texture_width,
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gint input_texture_height, GLuint input_texture, gdouble proj_param1,
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gdouble proj_param2, gdouble proj_param3, gdouble proj_param4,
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GstGLDisplayProjection projection, gpointer * stuff);
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void gst_gl_display_del_fbo (GstGLDisplay * display, GLuint fbo,
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GLuint depth_buffer);
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void gst_gl_display_gen_shader (GstGLDisplay * display,
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const gchar * shader_vertex_source,
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const gchar * shader_fragment_source, GstGLShader ** shader);
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void gst_gl_display_del_shader (GstGLDisplay * display, GstGLShader * shader);
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void gst_gl_display_set_window_id (GstGLDisplay * display, gulong window_id);
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void gst_gl_display_set_client_reshape_callback (GstGLDisplay * display,
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CRCB cb);
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void gst_gl_display_set_client_draw_callback (GstGLDisplay * display, CDCB cb);
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#endif
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