gstreamer/gst-libs/gst/gl/gstgldisplay.h

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/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_GL_H__
#define __GST_GL_H__
#include <GL/glew.h>
#include <gstfreeglut.h>
#include <gst/gst.h>
#include <gst/video/video.h>
#define GST_TYPE_GL_DISPLAY \
(gst_gl_display_get_type())
#define GST_GL_DISPLAY(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_DISPLAY,GstGLDisplay))
#define GST_GL_DISPLAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GL_DISPLAY,GstGLDisplayClass))
#define GST_IS_GL_DISPLAY(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_DISPLAY))
#define GST_IS_GL_DISPLAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GL_DISPLAY))
typedef struct _GstGLDisplay GstGLDisplay;
typedef struct _GstGLDisplayClass GstGLDisplayClass;
//Color space conversion metthod
typedef enum {
GST_GL_DISPLAY_CONVERSION_GLSL, //ARB_fragment_shade
GST_GL_DISPLAY_CONVERSION_MATRIX, //ARB_imaging
GST_GL_DISPLAY_CONVERSION_MESA, //MESA_ycbcr_texture
} GstGLDisplayConversion;
//Message type
typedef enum {
GST_GL_DISPLAY_ACTION_CREATE,
GST_GL_DISPLAY_ACTION_DESTROY,
GST_GL_DISPLAY_ACTION_VISIBLE,
GST_GL_DISPLAY_ACTION_RESHAPE,
GST_GL_DISPLAY_ACTION_INIT_UPLOAD,
GST_GL_DISPLAY_ACTION_PREPARE,
GST_GL_DISPLAY_ACTION_CHANGE,
GST_GL_DISPLAY_ACTION_CLEAR,
GST_GL_DISPLAY_ACTION_VIDEO,
GST_GL_DISPLAY_ACTION_REDISPLAY,
GST_GL_DISPLAY_ACTION_GENFBO,
GST_GL_DISPLAY_ACTION_DELFBO,
GST_GL_DISPLAY_ACTION_USEFBO,
GST_GL_DISPLAY_ACTION_USEFBO2,
GST_GL_DISPLAY_ACTION_OVFBO,
GST_GL_DISPLAY_ACTION_GENSHADER,
GST_GL_DISPLAY_ACTION_DELSHADER
} GstGLDisplayAction;
//Message to communicate with the gl thread
typedef struct _GstGLDisplayMsg {
GstGLDisplayAction action;
gint glutWinId;
GstGLDisplay* display;
} GstGLDisplayMsg;
//Texture pool elements
typedef struct _GstGLDisplayTex {
GLuint texture;
} GstGLDisplayTex;
//Client callbacks
typedef void (* CRCB) ( GLuint, GLuint );
typedef gboolean (* CDCB) ( GLuint, GLuint, GLuint);
//opengl scene callback
typedef void (* GLCB) ( GLuint, GLuint, GLuint, GLhandleARB);
typedef void (* GLCB2) ( gpointer* p1, gpointer* p2, gint w, gint h);
struct _GstGLDisplay {
GObject object;
GMutex* mutex;
GQueue* texturePool;
GCond* cond_init_upload;
GCond* cond_make;
GCond* cond_fill;
GCond* cond_clear;
GCond* cond_video;
GCond* cond_generateFBO;
GCond* cond_useFBO;
GCond* cond_useFBO2;
GCond* cond_destroyFBO;
GCond* cond_download;
GCond* cond_initShader;
GCond* cond_destroyShader;
GCond* cond_create;
GCond* cond_destroy;
gint glutWinId;
gulong winId;
GString* title;
gint win_xpos;
gint win_ypos;
gboolean visible;
gboolean isAlive;
//intput frame buffer object (video -> GL)
GLuint fbo;
GLuint depthBuffer;
GLuint textureFBO;
GLuint textureFBOWidth;
GLuint textureFBOHeight;
GstVideoFormat upload_video_format;
//filter frame buffer object (GL -> GL)
GLuint requestedFBO;
GLuint requestedDepthBuffer;
GLuint requestedTextureFBOWidth;
GLuint requestedTextureFBOHeight;
GLuint usedFBO;
GLuint usedDepthBuffer;
GLuint usedTextureFBO;
GLuint usedTextureFBOWidth;
GLuint usedTextureFBOHeight;
GLCB glsceneFBO_cb;
GLCB2 glsceneFBO_cb2;
gpointer* p1;
gpointer* p2;
GLuint inputTextureWidth;
GLuint inputTextureHeight;
GLuint inputTexture;
GLuint rejectedFBO;
GLuint rejectedDepthBuffer;
//displayed texture
GLuint displayedTexture;
GLuint displayedTextureWidth;
GLuint displayedTextureHeight;
gint resize_width;
gint resize_height;
GLuint preparedTexture;
GLuint currentTexture;
GLuint currentTexture_u;
GLuint currentTexture_v;
GLuint currentTextureWidth;
GLuint currentTextureHeight;
GstVideoFormat currentVideo_format;
gpointer currentData;
GLuint textureTrash;
//output frame buffer object (GL -> video)
GLuint videoFBO;
GLuint videoDepthBuffer;
GLuint videoTexture;
GLuint videoTexture_u;
GLuint videoTexture_v;
gint outputWidth;
gint outputHeight;
GstVideoFormat outputVideo_format;
gpointer outputData;
GLenum multipleRT[3];
//recorded texture
GLuint recordedTexture;
GLuint recordedTextureWidth;
GLuint recordedTextureHeight;
//colorspace conversion method
GstGLDisplayConversion colorspace_conversion;
//from video to texture
gchar* textFProgram_YUY2_UYVY;
GLhandleARB GLSLProgram_YUY2;
GLhandleARB GLSLProgram_UYVY;
gchar* textFProgram_I420_YV12;
GLhandleARB GLSLProgram_I420_YV12;
gchar* textFProgram_AYUV;
GLhandleARB GLSLProgram_AYUV;
//from texture to video
gchar* textFProgram_to_YUY2_UYVY;
GLhandleARB GLSLProgram_to_YUY2;
GLhandleARB GLSLProgram_to_UYVY;
gchar* textFProgram_to_I420_YV12;
GLhandleARB GLSLProgram_to_I420_YV12;
gchar* textFProgram_to_AYUV;
GLhandleARB GLSLProgram_to_AYUV;
//requested shader
gchar* requestedTextShader;
GLhandleARB requestedHandleShader;
GLhandleARB usedHandleShader;
GLhandleARB rejectedHandleShader;
//client callbacks
CRCB clientReshapeCallback;
CDCB clientDrawCallback;
};
struct _GstGLDisplayClass {
GObjectClass object_class;
};
GType gst_gl_display_get_type (void);
//------------------------------------------------------------
//-------------------- Public declarations ------------------
//------------------------------------------------------------
GstGLDisplay *gst_gl_display_new (void);
void gst_gl_display_init_gl_context (GstGLDisplay* display,
GLint x, GLint y,
GLint width, GLint height,
gulong winId,
gboolean visible);
void gst_gl_display_setClientReshapeCallback (GstGLDisplay* display, CRCB cb);
void gst_gl_display_setClientDrawCallback (GstGLDisplay* display, CDCB cb);
void gst_gl_display_setVisibleWindow (GstGLDisplay* display, gboolean visible);
void gst_gl_display_resizeWindow (GstGLDisplay* display, gint width, gint height);
void gst_gl_display_init_upload (GstGLDisplay* display, GstVideoFormat video_format,
guint gl_width, guint gl_height);
void gst_gl_display_prepare_texture (GstGLDisplay* display, guint* pTexture);
void gst_gl_display_do_upload (GstGLDisplay* display, GstVideoFormat video_format,
gint video_width, gint video_height, gpointer data,
guint gl_width, guint gl_height, guint pTexture);
void gst_gl_display_clearTexture (GstGLDisplay* display, guint texture);
void gst_gl_display_videoChanged (GstGLDisplay* display, GstVideoFormat video_format,
gint width, gint height, GLuint recordedTexture, gpointer data);
gboolean gst_gl_display_postRedisplay (GstGLDisplay* display, GLuint texture, gint width, gint height);
void gst_gl_display_requestFBO (GstGLDisplay* display, gint width, gint height,
guint* fbo, guint* depthbuffer);
void gst_gl_display_useFBO (GstGLDisplay* display, gint textureFBOWidth, gint textureFBOheight,
guint fbo, guint depthbuffer, guint textureFBO, GLCB cb,
guint inputTextureWidth, guint inputTextureHeight, guint inputTexture,
GLhandleARB handleShader);
void gst_gl_display_useFBO2 (GstGLDisplay* display, gint textureFBOWidth, gint textureFBOheight,
guint fbo, guint depthbuffer, guint textureFBO, GLCB2 cb,
gpointer* p1, gpointer* p2);
void gst_gl_display_rejectFBO (GstGLDisplay* display, guint fbo,
guint depthbuffer);
void gst_gl_display_initDonwloadFBO (GstGLDisplay* display, gint width, gint height);
void gst_gl_display_initShader (GstGLDisplay* display, gchar* textShader, GLhandleARB* handleShader);
void gst_gl_display_destroyShader (GstGLDisplay* display, GLhandleARB shader);
void gst_gl_display_set_windowId (GstGLDisplay* display, gulong winId);
#endif