mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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283 lines
8.8 KiB
C
283 lines
8.8 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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#include "gstglupload.h"
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#include "gstgldownload.h"
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G_BEGIN_DECLS
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GType gst_gl_display_get_type (void);
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#define GST_TYPE_GL_DISPLAY (gst_gl_display_get_type())
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#define GST_GL_DISPLAY(obj) (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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#define GST_GL_DISPLAY_CAST(obj) ((GstGLDisplay*)(obj))
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typedef struct _GstGLDisplay GstGLDisplay;
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typedef struct _GstGLDisplayClass GstGLDisplayClass;
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/**
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* GstGLDisplayConversion:
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*
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* %GST_GL_DISPLAY_CONVERSION_GLSL: Convert using GLSL (shaders)
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* %GST_GL_DISPLAY_CONVERSION_MATRIX: Convert using the ARB_imaging extension (not implemented)
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* %GST_GL_DISPLAY_CONVERSION_MESA: Convert using support in MESA
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*/
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typedef enum
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{
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GST_GL_DISPLAY_CONVERSION_GLSL,
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GST_GL_DISPLAY_CONVERSION_MATRIX,
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GST_GL_DISPLAY_CONVERSION_MESA,
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} GstGLDisplayConversion;
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/**
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* GstGLDisplayProjection:
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*
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* %GST_GL_DISPLAY_PROJECTION_ORTHO2D: Orthogonal projection
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* %GST_GL_DISPLAY_CONVERSION_MATRIX: Perspective projection
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*/
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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_PERSPECTIVE
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} GstGLDisplayProjection;
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/**
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* CRCB:
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* @width: new width
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* @height: new height:
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* @data: user data
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*
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* client reshape callback
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*/
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typedef void (*CRCB) (GLuint width, GLuint height, gpointer data);
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/**
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* CDCB:
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* @texture: texture to draw
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* @width: new width
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* @height: new height:
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* @data: user data
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*
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* client draw callback
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*/
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typedef gboolean (*CDCB) (GLuint texture, GLuint width, GLuint height, gpointer data);
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/**
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* GstGLDisplayThreadFunc:
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* @display: a #GstGLDisplay
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* @data: user data
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*
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* Represents a function to run in the GL thread
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*/
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typedef void (*GstGLDisplayThreadFunc) (GstGLDisplay * display, gpointer data);
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/**
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* GLCB:
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* @width: the width
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* @height: the height
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* @texture: texture
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* @stuff: user data
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*
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* callback definition for operating on textures
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*/
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typedef void (*GLCB) (gint, gint, guint, gpointer stuff);
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/**
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* GLCB_V2:
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* @stuff: user data
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*
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* callback definition for operating through a Framebuffer object
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*/
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typedef void (*GLCB_V2) (gpointer stuff);
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#define GST_GL_DISPLAY_ERR_MSG(obj) ("%s", GST_GL_DISPLAY_CAST(obj)->error_message)
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/**
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* GstGLDisplay:
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*
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* the contents of a #GstGLDisplay are private and should only be accessed
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* through the provided API
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*/
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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 isAlive;
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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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gboolean keep_aspect_ratio;
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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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GstVideoFormat gen_texture_video_format;
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/* client callbacks */
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CRCB clientReshapeCallback;
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CDCB clientDrawCallback;
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gpointer client_data;
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GstGLDisplayConversion colorspace_conversion;
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GSList *uploads;
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GSList *downloads;
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/* foreign gl context */
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gulong 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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GLCB_V2 use_fbo_scene_cb_v2;
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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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/* 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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gchar *error_message;
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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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/*-----------------------------------------------------------*\
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-------------------- Public declarations -------------------
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\*-----------------------------------------------------------*/
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GstGLDisplay *gst_gl_display_new (void);
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gboolean gst_gl_display_create_context (GstGLDisplay * display,
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gulong external_gl_context);
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gboolean gst_gl_display_redisplay (GstGLDisplay * display, GLuint texture,
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gint gl_width, gint gl_height, gint window_width, gint window_height,
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gboolean keep_aspect_ratio);
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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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GstVideoFormat v_format, GLint width, GLint height);
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void gst_gl_display_gen_texture_thread (GstGLDisplay * display, GLuint * pTexture,
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GstVideoFormat v_format, GLint width, GLint height);
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void gst_gl_display_del_texture (GstGLDisplay * display, GLuint * pTexture);
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gboolean 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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gboolean gst_gl_display_use_fbo_v2 (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_V2 cb, 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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gboolean 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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void gst_gl_display_set_client_data (GstGLDisplay * display, gpointer data);
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gulong gst_gl_display_get_internal_gl_context (GstGLDisplay * display);
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void gst_gl_display_activate_gl_context (GstGLDisplay * display, gboolean activate);
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/* Must be called inside a lock/unlock on display, or within the glthread */
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void gst_gl_display_set_error (GstGLDisplay * display, const char * format, ...);
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void gst_gl_display_check_framebuffer_status (void);
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void gst_gl_display_lock (GstGLDisplay * display);
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void gst_gl_display_unlock (GstGLDisplay * display);
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G_END_DECLS
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#endif /* __GST_GL_H__ */
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