gstreamer/gst-libs/gst/gl/gstglutils.c

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/*
* GStreamer
* Copyright (C) 2013 Matthew Waters <ystreet00@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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <gst/gst.h>
#include "gl.h"
#include "gstglutils.h"
#ifndef GL_FRAMEBUFFER_UNDEFINED
#define GL_FRAMEBUFFER_UNDEFINED 0x8219
#endif
#ifndef GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
#endif
#ifndef GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
#endif
#ifndef GL_FRAMEBUFFER_UNSUPPORTED
#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
#endif
#ifndef GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS
#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS 0x8CD9
#endif
#define USING_OPENGL(display) (display->gl_api & GST_GL_API_OPENGL)
#define USING_OPENGL3(display) (display->gl_api & GST_GL_API_OPENGL3)
#define USING_GLES(display) (display->gl_api & GST_GL_API_GLES)
#define USING_GLES2(display) (display->gl_api & GST_GL_API_GLES2)
#define USING_GLES3(display) (display->gl_api & GST_GL_API_GLES3)
static GLuint gen_texture;
static GLuint gen_texture_width;
static GLuint gen_texture_height;
static GstVideoFormat gen_texture_video_format;
static GLuint *del_texture;
static gchar *error_message;
static void
gst_gl_display_gen_texture_window_cb (GstGLDisplay * display)
{
gst_gl_display_gen_texture_thread (display, &gen_texture,
gen_texture_video_format, gen_texture_width, gen_texture_height);
}
/* Generate a texture if no one is available in the pool
* Called in the gl thread */
void
gst_gl_display_gen_texture_thread (GstGLDisplay * display, GLuint * pTexture,
GstVideoFormat v_format, GLint width, GLint height)
{
const GstGLFuncs *gl = display->gl_vtable;
GST_TRACE ("Generating texture format:%u dimensions:%ux%u", v_format,
width, height);
gl->GenTextures (1, pTexture);
gl->BindTexture (GL_TEXTURE_RECTANGLE_ARB, *pTexture);
gl->TexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, width, height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
gl->TexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
gl->TexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
GST_LOG ("generated texture id:%d", *pTexture);
}
void
gst_gl_display_del_texture_window_cb (GstGLDisplay * display)
{
glDeleteTextures (1, del_texture);
}
/* called in the gl thread */
gboolean
gst_gl_display_check_framebuffer_status (GstGLDisplay * display)
{
GLenum status = 0;
status = display->gl_vtable->CheckFramebufferStatus (GL_FRAMEBUFFER);
switch (status) {
case GL_FRAMEBUFFER_COMPLETE:
return TRUE;
break;
case GL_FRAMEBUFFER_UNSUPPORTED:
GST_ERROR ("GL_FRAMEBUFFER_UNSUPPORTED");
break;
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT");
break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT");
break;
case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS");
break;
#if GST_GL_HAVE_OPENGL
case GL_FRAMEBUFFER_UNDEFINED:
GST_ERROR ("GL_FRAMEBUFFER_UNDEFINED");
break;
#endif
default:
GST_ERROR ("General FBO error");
}
return FALSE;
}
void
gst_gl_display_activate_gl_context (GstGLDisplay * display, gboolean activate)
{
GstGLWindow *window;
g_return_if_fail (GST_IS_GL_DISPLAY (display));
if (!activate)
gst_gl_display_lock (display);
window = gst_gl_display_get_window_unlocked (display);
gst_gl_window_activate (window, activate);
if (activate)
gst_gl_display_unlock (display);
gst_object_unref (window);
}
void
gst_gl_display_gen_texture (GstGLDisplay * display, GLuint * pTexture,
GstVideoFormat v_format, GLint width, GLint height)
{
GstGLWindow *window;
gst_gl_display_lock (display);
window = gst_gl_display_get_window_unlocked (display);
if (gst_gl_window_is_running (window)) {
gen_texture_width = width;
gen_texture_height = height;
gen_texture_video_format = v_format;
gst_gl_window_send_message (window,
GST_GL_WINDOW_CB (gst_gl_display_gen_texture_window_cb), display);
*pTexture = gen_texture;
} else
*pTexture = 0;
gst_object_unref (window);
gst_gl_display_unlock (display);
}
void
gst_gl_display_del_texture (GstGLDisplay * display, GLuint * pTexture)
{
GstGLWindow *window;
gst_gl_display_lock (display);
window = gst_gl_display_get_window_unlocked (display);
if (gst_gl_window_is_running (window) && *pTexture) {
del_texture = pTexture;
gst_gl_window_send_message (window,
GST_GL_WINDOW_CB (gst_gl_display_del_texture_window_cb), display);
}
gst_object_unref (window);
gst_gl_display_unlock (display);
}
typedef struct _GenFBO
{
GstGLFramebuffer *frame;
gint width, height;
GLuint *fbo, *depth;
} GenFBO;
static void
_gen_fbo (GstGLDisplay * display, GenFBO * data)
{
gst_gl_framebuffer_generate (data->frame, data->width, data->height,
data->fbo, data->depth);
}
gboolean
gst_gl_display_gen_fbo (GstGLDisplay * display, gint width, gint height,
GLuint * fbo, GLuint * depthbuffer)
{
GstGLFramebuffer *frame = gst_gl_framebuffer_new (display);
GenFBO data = { frame, width, height, fbo, depthbuffer };
gst_gl_display_thread_add (display, (GstGLDisplayThreadFunc) _gen_fbo, &data);
gst_object_unref (frame);
return TRUE;
}
typedef struct _UseFBO
{
GstGLFramebuffer *frame;
gint texture_fbo_width;
gint texture_fbo_height;
GLuint fbo;
GLuint depth_buffer;
GLuint texture_fbo;
GLCB cb;
gint input_tex_width;
gint input_tex_height;
GLuint input_tex;
gdouble proj_param1;
gdouble proj_param2;
gdouble proj_param3;
gdouble proj_param4;
GstGLDisplayProjection projection;
gpointer stuff;
} UseFBO;
static void
_use_fbo (GstGLDisplay * display, UseFBO * data)
{
gst_gl_framebuffer_use (data->frame, data->texture_fbo_width,
data->texture_fbo_height, data->fbo, data->depth_buffer,
data->texture_fbo, data->cb, data->input_tex_width,
data->input_tex_height, data->input_tex, data->proj_param1,
data->proj_param2, data->proj_param3, data->proj_param4, data->projection,
data->stuff);
}
/* Called by glfilter */
/* this function really has to be simplified... do we really need to
set projection this way? Wouldn't be better a set_projection
separate call? or just make glut functions available out of
gst-libs and call it if needed on drawcallback? -- Filippo */
/* GLCB too.. I think that only needed parameters should be
* GstGLDisplay *display and gpointer data, or just gpointer data */
/* ..everything here has to be simplified! */
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_tex_width,
gint input_tex_height, GLuint input_tex, gdouble proj_param1,
gdouble proj_param2, gdouble proj_param3, gdouble proj_param4,
GstGLDisplayProjection projection, gpointer stuff)
{
GstGLFramebuffer *frame = gst_gl_framebuffer_new (display);
UseFBO data =
{ frame, texture_fbo_width, texture_fbo_height, fbo, depth_buffer,
texture_fbo, cb, input_tex_width, input_tex_height, input_tex,
proj_param1, proj_param2, proj_param3, proj_param4, projection, stuff
};
gst_gl_display_thread_add (display, (GstGLDisplayThreadFunc) _use_fbo, &data);
gst_object_unref (frame);
return TRUE;
}
typedef struct _UseFBO2
{
GstGLFramebuffer *frame;
gint texture_fbo_width;
gint texture_fbo_height;
GLuint fbo;
GLuint depth_buffer;
GLuint texture_fbo;
GLCB_V2 cb;
gpointer stuff;
} UseFBO2;
static void
_use_fbo_v2 (GstGLDisplay * display, UseFBO2 * data)
{
gst_gl_framebuffer_use_v2 (data->frame, data->texture_fbo_width,
data->texture_fbo_height, data->fbo, data->depth_buffer,
data->texture_fbo, data->cb, data->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)
{
GstGLFramebuffer *frame = gst_gl_framebuffer_new (display);
UseFBO2 data =
{ frame, texture_fbo_width, texture_fbo_height, fbo, depth_buffer,
texture_fbo, cb, stuff
};
gst_gl_display_thread_add (display, (GstGLDisplayThreadFunc) _use_fbo_v2,
&data);
gst_object_unref (frame);
return TRUE;
}
typedef struct _DelFBO
{
GstGLFramebuffer *frame;
GLuint fbo;
GLuint depth;
} DelFBO;
/* Called in the gl thread */
static void
_del_fbo (GstGLDisplay * display, DelFBO * data)
{
gst_gl_framebuffer_delete (data->frame, data->fbo, data->depth);
}
/* Called by gltestsrc and glfilter */
void
gst_gl_display_del_fbo (GstGLDisplay * display, GLuint fbo, GLuint depth_buffer)
{
GstGLFramebuffer *frame = gst_gl_framebuffer_new (display);
DelFBO data = { frame, fbo, depth_buffer };
gst_gl_display_thread_add (display, (GstGLDisplayThreadFunc) _del_fbo, &data);
gst_object_unref (frame);
}
static void
_compile_shader (GstGLDisplay * display, GstGLShader ** shader)
{
GError *error = NULL;
gst_gl_shader_compile (*shader, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_display_clear_shader (display);
gst_object_unref (*shader);
*shader = NULL;
}
}
/* Called by glfilter */
gboolean
gst_gl_display_gen_shader (GstGLDisplay * display, const gchar * vert_src,
const gchar * frag_src, GstGLShader ** shader)
{
g_return_val_if_fail (frag_src != NULL || vert_src != NULL, FALSE);
g_return_val_if_fail (shader != NULL, FALSE);
*shader = gst_gl_shader_new (display);
if (frag_src)
gst_gl_shader_set_fragment_source (*shader, frag_src);
if (vert_src)
gst_gl_shader_set_vertex_source (*shader, vert_src);
gst_gl_display_thread_add (display, (GstGLDisplayThreadFunc) _compile_shader,
shader);
return *shader != NULL;
}
void
gst_gl_display_set_error (GstGLDisplay * display, const char *format, ...)
{
va_list args;
if (error_message)
g_free (error_message);
va_start (args, format);
error_message = g_strdup_vprintf (format, args);
va_end (args);
GST_WARNING ("%s", error_message);
}
gchar *
gst_gl_display_get_error (void)
{
return error_message;
}
/* Called by glfilter */
void
gst_gl_display_del_shader (GstGLDisplay * display, GstGLShader * shader)
{
gst_object_unref (shader);
}