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

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/*
* GStreamer
* Copyright (C) 2007 David A. Schleef <ds@schleef.org>
* 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 <gst/video/video.h>
#include "gstglwindow.h"
#include "gstglshader.h"
G_BEGIN_DECLS
#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))
#define GST_GL_DISPLAY_CAST(obj) ((GstGLDisplay*)(obj))
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_PERSPECTIVE
} GstGLDisplayProjection;
//Texture pool elements
typedef struct _GstGLDisplayTex
{
GLuint texture;
} GstGLDisplayTex;
//Client callbacks
typedef void (*CRCB) (GLuint, GLuint, gpointer);
typedef gboolean (*CDCB) (GLuint, GLuint, GLuint, gpointer);
typedef void (*GstGLDisplayThreadFunc) (GstGLDisplay * display, gpointer data);
//opengl scene callback
typedef void (*GLCB) (gint, gint, guint, gpointer stuff);
typedef void (*GLCB_V2) (gpointer stuff);
#define GST_GL_DISPLAY_ERR_MSG(obj) ("%s", GST_GL_DISPLAY_CAST(obj)->error_message)
struct _GstGLDisplay
{
GObject object;
//thread safe
GMutex *mutex;
//gl context
GThread *gl_thread;
GstGLWindow *gl_window;
gboolean isAlive;
GHashTable *texture_pool;
//conditions
GCond *cond_create_context;
GCond *cond_destroy_context;
//generic gl code
GstGLDisplayThreadFunc generic_callback;
gpointer data;
//action redisplay
GLuint redisplay_texture;
GLuint redisplay_texture_width;
GLuint redisplay_texture_height;
gboolean keep_aspect_ratio;
#ifdef OPENGL_ES2
GstGLShader *redisplay_shader;
gchar *redisplay_vertex_shader_str;
gchar *redisplay_fragment_shader_str;
GLint redisplay_attr_position_loc;
GLint redisplay_attr_texture_loc;
#endif
//action gen and del texture
GLuint gen_texture;
GLuint gen_texture_width;
GLuint gen_texture_height;
GstVideoFormat gen_texture_video_format;
//client callbacks
CRCB clientReshapeCallback;
CDCB clientDrawCallback;
gpointer client_data;
//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 upload_colorspace_conversion;
gint upload_data_width;
gint upload_data_height;
GstVideoFrame *upload_frame;
//foreign gl context
gulong external_gl_context;
//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;
GLCB_V2 use_fbo_scene_cb_v2;
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_shader_fragment_source;
const gchar *gen_shader_vertex_source;
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;
#ifdef OPENGL_ES2
gchar *text_vertex_shader_upload;
GLint shader_upload_attr_position_loc;
GLint shader_upload_attr_texture_loc;
#endif
//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;
#ifdef OPENGL_ES2
gchar *text_vertex_shader_download;
GLint shader_download_attr_position_loc;
GLint shader_download_attr_texture_loc;
gchar *text_fragment_shader_download_RGB;
GstGLShader *shader_download_RGB;
#endif
gchar *error_message;
};
struct _GstGLDisplayClass
{
GObjectClass object_class;
};
GType gst_gl_display_get_type (void);
//------------------------------------------------------------
//-------------------- Public declarations ------------------
//------------------------------------------------------------
GstGLDisplay *gst_gl_display_new (void);
gboolean gst_gl_display_create_context (GstGLDisplay * display,
gulong external_gl_context);
gboolean gst_gl_display_redisplay (GstGLDisplay * display, GLuint texture,
gint gl_width, gint gl_height, gint window_width, gint window_height,
gboolean keep_aspect_ratio);
void gst_gl_display_thread_add (GstGLDisplay * display,
GstGLDisplayThreadFunc func, gpointer data);
void gst_gl_display_gen_texture (GstGLDisplay * display, GLuint * pTexture,
GstVideoFormat v_format, GLint width, GLint height);
void gst_gl_display_gen_texture_thread (GstGLDisplay * display, GLuint * pTexture,
GstVideoFormat v_format, GLint width, GLint height);
void gst_gl_display_del_texture (GstGLDisplay * display, GLuint * pTexture);
gboolean 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,
GstVideoFrame * frame);
gboolean 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);
gboolean 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);
gboolean gst_gl_display_use_fbo_v2 (GstGLDisplay * display, gint texture_fbo_width,
gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
GLuint texture_fbo, GLCB_V2 cb, gpointer * stuff);
void gst_gl_display_del_fbo (GstGLDisplay * display, GLuint fbo,
GLuint depth_buffer);
gboolean gst_gl_display_gen_shader (GstGLDisplay * display,
const gchar * shader_vertex_source,
const gchar * shader_fragment_source, GstGLShader ** shader);
void gst_gl_display_del_shader (GstGLDisplay * display, GstGLShader * shader);
void gst_gl_display_set_window_id (GstGLDisplay * display, gulong window_id);
void gst_gl_display_set_client_reshape_callback (GstGLDisplay * display,
CRCB cb);
void gst_gl_display_set_client_draw_callback (GstGLDisplay * display, CDCB cb);
void gst_gl_display_set_client_data (GstGLDisplay * display, gpointer data);
gulong gst_gl_display_get_internal_gl_context (GstGLDisplay * display);
void gst_gl_display_activate_gl_context (GstGLDisplay * display, gboolean activate);
/* Must be called inside a lock/unlock on display, or within the glthread */
void gst_gl_display_set_error (GstGLDisplay * display, const char * format, ...);
G_END_DECLS
#endif /* __GST_GL_H__ */