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

310 lines
9.5 KiB
C

/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@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>
#include "gstglshader.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 method
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;
//Projection type
typedef enum {
GST_GL_DISPLAY_PROJECTION_ORTHO2D,
GST_GL_DISPLAY_PROJECTION_PERSPECIVE
} GstGLDisplayProjection;
//Message type
typedef enum {
GST_GL_DISPLAY_ACTION_CREATE_CONTEXT,
GST_GL_DISPLAY_ACTION_DESTROY_CONTEXT,
GST_GL_DISPLAY_ACTION_CHANGE_CONTEXT,
GST_GL_DISPLAY_ACTION_VISIBLE_CONTEXT,
GST_GL_DISPLAY_ACTION_RESIZE_CONTEXT,
GST_GL_DISPLAY_ACTION_REDISPLAY_CONTEXT,
GST_GL_DISPLAY_ACTION_GENERIC,
GST_GL_DISPLAY_ACTION_GEN_TEXTURE,
GST_GL_DISPLAY_ACTION_DEL_TEXTURE,
GST_GL_DISPLAY_ACTION_INIT_UPLOAD,
GST_GL_DISPLAY_ACTION_DO_UPLOAD,
GST_GL_DISPLAY_ACTION_INIT_DOWNLOAD,
GST_GL_DISPLAY_ACTION_DO_DOWNLOAD,
GST_GL_DISPLAY_ACTION_GEN_FBO,
GST_GL_DISPLAY_ACTION_USE_FBO,
GST_GL_DISPLAY_ACTION_DEL_FBO,
GST_GL_DISPLAY_ACTION_GEN_SHADER,
GST_GL_DISPLAY_ACTION_DEL_SHADER
} 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);
typedef void (* GstGLDisplayThreadFunc) (GstGLDisplay *display, gpointer data);
//opengl scene callback
typedef void (* GLCB) ( gint, gint, guint, gpointer stuff);
struct _GstGLDisplay {
GObject object;
//thread safe
GMutex* mutex;
//gl context
gint glutWinId;
gulong winId;
GString* title;
gint win_xpos;
gint win_ypos;
gboolean visible;
gboolean isAlive;
GData* texture_pool;
//conditions
GCond* cond_create_context;
GCond* cond_destroy_context;
GCond* cond_change_context;
GCond* cond_generic;
GCond* cond_gen_texture;
GCond* cond_del_texture;
GCond* cond_init_upload;
GCond* cond_do_upload;
GCond* cond_init_download;
GCond* cond_do_download;
GCond* cond_gen_fbo;
GCond* cond_use_fbo;
GCond* cond_del_fbo;
GCond* cond_gen_shader;
GCond* cond_del_shader;
//generic gl code
GstGLDisplayThreadFunc generic_callback;
gpointer data;
//action redisplay
GLuint redisplay_texture;
GLuint redisplay_texture_width;
GLuint redisplay_texture_height;
//action resize
gint resize_width;
gint resize_height;
//action gen and del texture
GLuint gen_texture;
GLuint gen_texture_width;
GLuint gen_texture_height;
GLuint del_texture;
GLuint del_texture_width;
GLuint del_texture_height;
//client callbacks
CRCB clientReshapeCallback;
CDCB clientDrawCallback;
//upload
GLuint upload_fbo;
GLuint upload_depth_buffer;
GLuint upload_outtex;
GLuint upload_intex;
GLuint upload_intex_u;
GLuint upload_intex_v;
GLuint upload_width;
GLuint upload_height;
GstVideoFormat upload_video_format;
GstGLDisplayConversion colorspace_conversion;
gint upload_data_width;
gint upload_data_height;
gpointer upload_data;
//filter gen fbo
GLuint gen_fbo_width;
GLuint gen_fbo_height;
GLuint generated_fbo;
GLuint generated_depth_buffer;
//filter use fbo
GLuint use_fbo;
GLuint use_depth_buffer;
GLuint use_fbo_texture;
GLuint use_fbo_width;
GLuint use_fbo_height;
GLCB use_fbo_scene_cb;
gdouble use_fbo_proj_param1;
gdouble use_fbo_proj_param2;
gdouble use_fbo_proj_param3;
gdouble use_fbo_proj_param4;
GstGLDisplayProjection use_fbo_projection;
gpointer* use_fbo_stuff;
GLuint input_texture_width;
GLuint input_texture_height;
GLuint input_texture;
//filter del fbo
GLuint del_fbo;
GLuint del_depth_buffer;
//download
GLuint download_fbo;
GLuint download_depth_buffer;
GLuint download_texture;
GLuint download_texture_u;
GLuint download_texture_v;
gint download_width;
gint download_height;
GstVideoFormat download_video_format;
gpointer download_data;
GLenum multipleRT[3];
GLuint ouput_texture;
GLuint ouput_texture_width;
GLuint ouput_texture_height;
//action gen and del shader
const gchar* gen_text_shader;
GstGLShader* gen_shader;
GstGLShader* del_shader;
//fragement shader upload
gchar* text_shader_upload_YUY2_UYVY;
GstGLShader* shader_upload_YUY2;
GstGLShader* shader_upload_UYVY;
gchar* text_shader_upload_I420_YV12;
GstGLShader* shader_upload_I420_YV12;
gchar* text_shader_upload_AYUV;
GstGLShader* shader_upload_AYUV;
//fragement shader download
gchar* text_shader_download_YUY2_UYVY;
GstGLShader* shader_download_YUY2;
GstGLShader* shader_download_UYVY;
gchar* text_shader_download_I420_YV12;
GstGLShader* shader_download_I420_YV12;
gchar* text_shader_download_AYUV;
GstGLShader* shader_download_AYUV;
};
struct _GstGLDisplayClass {
GObjectClass object_class;
};
GType gst_gl_display_get_type (void);
//------------------------------------------------------------
//-------------------- Public declarations ------------------
//------------------------------------------------------------
GstGLDisplay* gst_gl_display_new (void);
void gst_gl_display_create_context (GstGLDisplay* display,
GLint x, GLint y,
GLint width, GLint height,
gulong winId,
gboolean visible);
void gst_gl_display_set_visible_context (GstGLDisplay* display, gboolean visible);
void gst_gl_display_resize_context (GstGLDisplay* display, gint width, gint height);
gboolean gst_gl_display_redisplay (GstGLDisplay* display, GLuint texture, gint width, gint height);
void gst_gl_display_thread_add (GstGLDisplay *display,
GstGLDisplayThreadFunc func, gpointer data);
void gst_gl_display_gen_texture (GstGLDisplay* display, GLuint* pTexture, GLint width, GLint height);
void gst_gl_display_del_texture (GstGLDisplay* display, GLuint texture, GLint width, GLint height);
void gst_gl_display_init_upload (GstGLDisplay* display, GstVideoFormat video_format,
guint gl_width, guint gl_height,
gint video_width, gint video_height);
gboolean gst_gl_display_do_upload (GstGLDisplay* display, GLuint texture,
gint data_width, gint data_height,
gpointer data);
void gst_gl_display_init_download (GstGLDisplay* display, GstVideoFormat video_format,
gint width, gint height);
gboolean gst_gl_display_do_download (GstGLDisplay* display, GLuint texture,
gint width, gint height,
gpointer data);
void gst_gl_display_gen_fbo (GstGLDisplay* display, gint width, gint height,
GLuint* fbo, GLuint* depthbuffer);
gboolean gst_gl_display_use_fbo (GstGLDisplay* display, gint texture_fbo_width, gint texture_fbo_height,
GLuint fbo, GLuint depth_buffer, GLuint texture_fbo, GLCB cb,
gint input_texture_width, gint input_texture_height, GLuint input_texture,
gdouble proj_param1, gdouble proj_param2,
gdouble proj_param3, gdouble proj_param4,
GstGLDisplayProjection projection, gpointer* stuff);
void gst_gl_display_del_fbo (GstGLDisplay* display, GLuint fbo,
GLuint depth_buffer);
void gst_gl_display_gen_shader (GstGLDisplay* display, const gchar* textShader, GstGLShader** shader);
void gst_gl_display_del_shader (GstGLDisplay* display, GstGLShader* shader);
void gst_gl_display_set_window_id (GstGLDisplay* display, gulong winId);
void gst_gl_display_set_client_reshape_callback (GstGLDisplay* display, CRCB cb);
void gst_gl_display_set_client_draw_callback (GstGLDisplay* display, CDCB cb);
#endif