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gstreamer/gst-libs/gst/gl/gstgldisplay.c
Matthew Waters 3e18471e8e [509/906] GstGLDisplay: update for 1.0
2017-12-09 19:31:24 +00:00

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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.
*/
#define GLIB_DISABLE_DEPRECATION_WARNINGS
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <gst/video/gstvideosink.h>
#include "gstgldisplay.h"
#ifndef GLEW_VERSION_MAJOR
#define GLEW_VERSION_MAJOR 4
#endif
#ifndef GLEW_VERSION_MINOR
#define GLEW_VERSION_MINOR 0
#endif
/*
* gst-launch-0.10 --gst-debug=gldisplay:N pipeline
* N=1: errors
* N=2: errors warnings
* N=3: errors warnings infos
* N=4: errors warnings infos
* N=5: errors warnings infos logs
*/
GST_DEBUG_CATEGORY_STATIC (gst_gl_display_debug);
#define GST_CAT_DEFAULT gst_gl_display_debug
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_INIT (gst_gl_display_debug, "gldisplay", 0, "opengl display");
G_DEFINE_TYPE_WITH_CODE (GstGLDisplay, gst_gl_display, G_TYPE_OBJECT,
DEBUG_INIT);
static void gst_gl_display_finalize (GObject * object);
/* Called in the gl thread, protected by lock and unlock */
gpointer gst_gl_display_thread_create_context (GstGLDisplay * display);
void gst_gl_display_thread_destroy_context (GstGLDisplay * display);
void gst_gl_display_thread_run_generic (GstGLDisplay * display);
void gst_gl_display_thread_gen_texture (GstGLDisplay * display);
#ifdef OPENGL_ES2
void gst_gl_display_thread_init_redisplay (GstGLDisplay * display);
#endif
void gst_gl_display_thread_init_upload (GstGLDisplay * display);
void gst_gl_display_thread_do_upload (GstGLDisplay * display);
void gst_gl_display_thread_init_download (GstGLDisplay * display);
void gst_gl_display_thread_do_download (GstGLDisplay * display);
void gst_gl_display_thread_gen_fbo (GstGLDisplay * display);
void gst_gl_display_thread_use_fbo (GstGLDisplay * display);
void gst_gl_display_thread_use_fbo_v2 (GstGLDisplay * display);
void gst_gl_display_thread_del_fbo (GstGLDisplay * display);
void gst_gl_display_thread_gen_shader (GstGLDisplay * display);
void gst_gl_display_thread_del_shader (GstGLDisplay * display);
/* private methods */
void gst_gl_display_lock (GstGLDisplay * display);
void gst_gl_display_unlock (GstGLDisplay * display);
void gst_gl_display_on_resize (GstGLDisplay * display, gint width, gint height);
void gst_gl_display_on_draw (GstGLDisplay * display);
void gst_gl_display_on_close (GstGLDisplay * display);
void gst_gl_display_glgen_texture (GstGLDisplay * display, GLuint * pTexture,
GLint width, GLint height);
void gst_gl_display_gldel_texture (GstGLDisplay * display, GLuint * pTexture,
GLint width, GLint height);
gboolean gst_gl_display_texture_pool_func_clean (gpointer key, gpointer value,
gpointer data);
void gst_gl_display_check_framebuffer_status (void);
/* To not make gst_gl_display_thread_do_upload
* and gst_gl_display_thread_do_download too big */
void gst_gl_display_thread_init_upload_fbo (GstGLDisplay * display);
void gst_gl_display_thread_do_upload_make (GstGLDisplay * display);
void gst_gl_display_thread_do_upload_fill (GstGLDisplay * display);
void gst_gl_display_thread_do_upload_draw (GstGLDisplay * display);
void gst_gl_display_thread_do_download_draw_rgb (GstGLDisplay * display);
void gst_gl_display_thread_do_download_draw_yuv (GstGLDisplay * display);
//------------------------------------------------------------
//---------------------- For klass GstGLDisplay ---------------
//------------------------------------------------------------
static void
gst_gl_display_class_init (GstGLDisplayClass * klass)
{
G_OBJECT_CLASS (klass)->finalize = gst_gl_display_finalize;
gst_gl_window_init_platform ();
}
static void
gst_gl_display_init (GstGLDisplay * display)
{
//thread safe
display->mutex = g_mutex_new ();
//gl context
display->gl_thread = NULL;
display->gl_window = NULL;
display->isAlive = TRUE;
display->texture_pool = g_hash_table_new (g_direct_hash, g_direct_equal);
//conditions
display->cond_create_context = g_cond_new ();
display->cond_destroy_context = g_cond_new ();
//action redisplay
display->redisplay_texture = 0;
display->redisplay_texture_width = 0;
display->redisplay_texture_height = 0;
display->keep_aspect_ratio = FALSE;
#ifdef OPENGL_ES2
display->redisplay_shader = NULL;
display->redisplay_attr_position_loc = 0;
display->redisplay_attr_texture_loc = 0;
#endif
//action gen and del texture
display->gen_texture = 0;
display->gen_texture_width = 0;
display->gen_texture_height = 0;
//client callbacks
display->clientReshapeCallback = NULL;
display->clientDrawCallback = NULL;
display->client_data = NULL;
//upload
display->upload_fbo = 0;
display->upload_depth_buffer = 0;
display->upload_outtex = 0;
display->upload_intex = 0;
display->upload_intex_u = 0;
display->upload_intex_v = 0;
display->upload_width = 0;
display->upload_height = 0;
display->upload_video_format = GST_VIDEO_FORMAT_RGBx;
display->upload_colorspace_conversion = GST_GL_DISPLAY_CONVERSION_MESA;
display->upload_data_width = 0;
display->upload_data_height = 0;
display->upload_data = NULL;
//foreign gl context
display->external_gl_context = 0;
//filter gen fbo
display->gen_fbo_width = 0;
display->gen_fbo_height = 0;
display->generated_fbo = 0;
display->generated_depth_buffer = 0;
//filter use fbo
display->use_fbo = 0;
display->use_depth_buffer = 0;
display->use_fbo_texture = 0;
display->use_fbo_width = 0;
display->use_fbo_height = 0;
display->use_fbo_scene_cb = NULL;
display->use_fbo_scene_cb_v2 = NULL;
display->use_fbo_proj_param1 = 0;
display->use_fbo_proj_param2 = 0;
display->use_fbo_proj_param3 = 0;
display->use_fbo_proj_param4 = 0;
display->use_fbo_projection = 0;
display->use_fbo_stuff = NULL;
display->input_texture_width = 0;
display->input_texture_height = 0;
display->input_texture = 0;
//filter del fbo
display->del_fbo = 0;
display->del_depth_buffer = 0;
//download
display->download_fbo = 0;
display->download_depth_buffer = 0;
display->download_texture = 0;
display->download_texture_u = 0;
display->download_texture_v = 0;
display->download_width = 0;
display->download_height = 0;
display->download_video_format = 0;
display->download_data = NULL;
display->ouput_texture = 0;
display->ouput_texture_width = 0;
display->ouput_texture_height = 0;
//action gen and del shader
display->gen_shader_fragment_source = NULL;
display->gen_shader_vertex_source = NULL;
display->gen_shader = NULL;
display->del_shader = NULL;
//fragment shader upload
display->shader_upload_YUY2 = NULL;
display->shader_upload_UYVY = NULL;
display->shader_upload_I420_YV12 = NULL;
display->shader_upload_AYUV = NULL;
#ifdef OPENGL_ES2
display->shader_upload_attr_position_loc = 0;
display->shader_upload_attr_texture_loc = 0;
#endif
//fragment shader download
display->shader_download_YUY2 = NULL;
display->shader_download_UYVY = NULL;
display->shader_download_I420_YV12 = NULL;
display->shader_download_AYUV = NULL;
#ifdef OPENGL_ES2
display->shader_download_attr_position_loc = 0;
display->shader_download_attr_texture_loc = 0;
display->shader_download_RGB = NULL;
#endif
//YUY2:r,g,a
//UYVY:a,b,r
display->text_shader_upload_YUY2_UYVY =
#ifndef OPENGL_ES2
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect Ytex, UVtex;\n"
#else
"precision mediump float;\n"
"varying vec2 v_texCoord;\n" "uniform sampler2D Ytex, UVtex;\n"
#endif
"void main(void) {\n" " float fx, fy, y, u, v, r, g, b;\n"
#ifndef OPENGL_ES2
" fx = gl_TexCoord[0].x;\n"
" fy = gl_TexCoord[0].y;\n"
" y = texture2DRect(Ytex,vec2(fx,fy)).%c;\n"
" u = texture2DRect(UVtex,vec2(fx*0.5,fy)).%c;\n"
" v = texture2DRect(UVtex,vec2(fx*0.5,fy)).%c;\n"
#else
" fx = v_texCoord.x;\n"
" fy = v_texCoord.y;\n"
" y = texture2D(Ytex,vec2(fx,fy)).%c;\n"
" u = texture2D(UVtex,vec2(fx*0.5,fy)).%c;\n"
" v = texture2D(UVtex,vec2(fx*0.5,fy)).%c;\n"
#endif
" y=1.164*(y-0.0627);\n"
" u=u-0.5;\n"
" v=v-0.5;\n"
" r = y+1.5958*v;\n"
" g = y-0.39173*u-0.81290*v;\n"
" b = y+2.017*u;\n" " gl_FragColor = vec4(r, g, b, 1.0);\n" "}\n";
//ATI: "*0.5", ""
//normal: "", "*0.5"
display->text_shader_upload_I420_YV12 =
#ifndef OPENGL_ES2
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect Ytex,Utex,Vtex;\n"
#else
"precision mediump float;\n"
"varying vec2 v_texCoord;\n" "uniform sampler2D Ytex,Utex,Vtex;\n"
#endif
"void main(void) {\n" " float r,g,b,y,u,v;\n"
#ifndef OPENGL_ES2
" vec2 nxy = gl_TexCoord[0].xy;\n"
" y=texture2DRect(Ytex,nxy%s).r;\n"
" u=texture2DRect(Utex,nxy%s).r;\n"
" v=texture2DRect(Vtex,nxy*0.5).r;\n"
#else
" vec2 nxy = v_texCoord.xy;\n"
" y=texture2D(Ytex,nxy).r;\n"
" u=texture2D(Utex,nxy).r;\n" " v=texture2D(Vtex,nxy).r;\n"
#endif
" y=1.1643*(y-0.0625);\n"
" u=u-0.5;\n"
" v=v-0.5;\n"
" r=y+1.5958*v;\n"
" g=y-0.39173*u-0.81290*v;\n"
" b=y+2.017*u;\n" " gl_FragColor=vec4(r,g,b,1.0);\n" "}\n";
display->text_shader_upload_AYUV =
#ifndef OPENGL_ES2
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect tex;\n"
#else
"precision mediump float;\n"
"varying vec2 v_texCoord;\n" "uniform sampler2D tex;\n"
#endif
"void main(void) {\n" " float r,g,b,y,u,v;\n"
#ifndef OPENGL_ES2
" vec2 nxy=gl_TexCoord[0].xy;\n"
" y=texture2DRect(tex,nxy).r;\n"
" u=texture2DRect(tex,nxy).g;\n" " v=texture2DRect(tex,nxy).b;\n"
#else
" vec2 nxy = v_texCoord.xy;\n"
" y=texture2D(tex,nxy).g;\n"
" u=texture2D(tex,nxy).b;\n" " v=texture2D(tex,nxy).a;\n"
#endif
" y=1.1643*(y-0.0625);\n"
" u=u-0.5;\n"
" v=v-0.5;\n"
" r=y+1.5958*v;\n"
" g=y-0.39173*u-0.81290*v;\n"
" b=y+2.017*u;\n" " gl_FragColor=vec4(r,g,b,1.0);\n" "}\n";
//YUY2:y2,u,y1,v
//UYVY:v,y1,u,y2
display->text_shader_download_YUY2_UYVY =
#ifndef OPENGL_ES2
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect tex;\n"
#else
"precision mediump float;\n"
"varying vec2 v_texCoord;\n" "uniform sampler2D tex;\n"
#endif
"void main(void) {\n" " float fx,fy,r,g,b,r2,g2,b2,y1,y2,u,v;\n"
#ifndef OPENGL_ES2
" fx = gl_TexCoord[0].x;\n"
" fy = gl_TexCoord[0].y;\n"
" r=texture2DRect(tex,vec2(fx*2.0,fy)).r;\n"
" g=texture2DRect(tex,vec2(fx*2.0,fy)).g;\n"
" b=texture2DRect(tex,vec2(fx*2.0,fy)).b;\n"
" r2=texture2DRect(tex,vec2(fx*2.0+1.0,fy)).r;\n"
" g2=texture2DRect(tex,vec2(fx*2.0+1.0,fy)).g;\n"
" b2=texture2DRect(tex,vec2(fx*2.0+1.0,fy)).b;\n"
#else
" fx = v_texCoord.x;\n"
" fy = v_texCoord.y;\n"
" r=texture2D(tex,vec2(fx*2.0,fy)).r;\n"
" g=texture2D(tex,vec2(fx*2.0,fy)).g;\n"
" b=texture2D(tex,vec2(fx*2.0,fy)).b;\n"
" r2=texture2D(tex,vec2(fx*2.0+1.0,fy)).r;\n"
" g2=texture2D(tex,vec2(fx*2.0+1.0,fy)).g;\n"
" b2=texture2D(tex,vec2(fx*2.0+1.0,fy)).b;\n"
#endif
" y1=0.299011*r + 0.586987*g + 0.114001*b;\n"
" y2=0.299011*r2 + 0.586987*g2 + 0.114001*b2;\n"
" u=-0.148246*r -0.29102*g + 0.439266*b;\n"
" v=0.439271*r - 0.367833*g - 0.071438*b ;\n"
" y1=0.858885*y1 + 0.0625;\n"
" y2=0.858885*y2 + 0.0625;\n"
" u=u + 0.5;\n" " v=v + 0.5;\n" " gl_FragColor=vec4(%s);\n" "}\n";
//no OpenGL ES 2.0 support because for now it's not possible
//to attach multiple textures to a frame buffer object
display->text_shader_download_I420_YV12 =
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect tex;\n"
"uniform float w, h;\n"
"void main(void) {\n"
" float r,g,b,r2,b2,g2,y,u,v;\n"
" vec2 nxy=gl_TexCoord[0].xy;\n"
" vec2 nxy2=mod(2.0*nxy, vec2(w, h));\n"
" r=texture2DRect(tex,nxy).r;\n"
" g=texture2DRect(tex,nxy).g;\n"
" b=texture2DRect(tex,nxy).b;\n"
" r2=texture2DRect(tex,nxy2).r;\n"
" g2=texture2DRect(tex,nxy2).g;\n"
" b2=texture2DRect(tex,nxy2).b;\n"
" y=0.299011*r + 0.586987*g + 0.114001*b;\n"
" u=-0.148246*r2 -0.29102*g2 + 0.439266*b2;\n"
" v=0.439271*r2 - 0.367833*g2 - 0.071438*b2 ;\n"
" y=0.858885*y + 0.0625;\n"
" u=u + 0.5;\n"
" v=v + 0.5;\n"
" gl_FragData[0] = vec4(y, 0.0, 0.0, 1.0);\n"
" gl_FragData[1] = vec4(u, 0.0, 0.0, 1.0);\n"
" gl_FragData[2] = vec4(v, 0.0, 0.0, 1.0);\n" "}\n";
display->text_shader_download_AYUV =
#ifndef OPENGL_ES2
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect tex;\n"
#else
"precision mediump float;\n"
"varying vec2 v_texCoord;\n" "uniform sampler2D tex;\n"
#endif
"void main(void) {\n" " float r,g,b,y,u,v;\n"
#ifndef OPENGL_ES2
" vec2 nxy=gl_TexCoord[0].xy;\n"
" r=texture2DRect(tex,nxy).r;\n"
" g=texture2DRect(tex,nxy).g;\n" " b=texture2DRect(tex,nxy).b;\n"
#else
" vec2 nxy=v_texCoord.xy;\n"
" r=texture2D(tex,nxy).r;\n"
" g=texture2D(tex,nxy).g;\n" " b=texture2D(tex,nxy).b;\n"
#endif
" y=0.299011*r + 0.586987*g + 0.114001*b;\n"
" u=-0.148246*r -0.29102*g + 0.439266*b;\n"
" v=0.439271*r - 0.367833*g - 0.071438*b ;\n"
" y=0.858885*y + 0.0625;\n" " u=u + 0.5;\n" " v=v + 0.5;\n"
#ifndef OPENGL_ES2
" gl_FragColor=vec4(y,u,v,1.0);\n"
#else
" gl_FragColor=vec4(1.0,y,u,v);\n"
#endif
"}\n";
#ifdef OPENGL_ES2
display->redisplay_vertex_shader_str =
"attribute vec4 a_position; \n"
"attribute vec2 a_texCoord; \n"
"varying vec2 v_texCoord; \n"
"void main() \n"
"{ \n"
" gl_Position = a_position; \n"
" v_texCoord = a_texCoord; \n" "} \n";
display->redisplay_fragment_shader_str =
"precision mediump float; \n"
"varying vec2 v_texCoord; \n"
"uniform sampler2D s_texture; \n"
"void main() \n"
"{ \n"
" gl_FragColor = texture2D( s_texture, v_texCoord );\n"
"} \n";
display->text_vertex_shader_upload =
"attribute vec4 a_position; \n"
"attribute vec2 a_texCoord; \n"
"varying vec2 v_texCoord; \n"
"void main() \n"
"{ \n"
" gl_Position = a_position; \n"
" v_texCoord = a_texCoord; \n" "} \n";
display->text_vertex_shader_download =
"attribute vec4 a_position; \n"
"attribute vec2 a_texCoord; \n"
"varying vec2 v_texCoord; \n"
"void main() \n"
"{ \n"
" gl_Position = a_position; \n"
" v_texCoord = a_texCoord; \n" "} \n";
display->text_fragment_shader_download_RGB =
"precision mediump float; \n"
"varying vec2 v_texCoord; \n"
"uniform sampler2D s_texture; \n"
"void main() \n"
"{ \n"
" gl_FragColor = texture2D( s_texture, v_texCoord );\n"
"} \n";
#endif
display->error_message = NULL;
}
static void
gst_gl_display_finalize (GObject * object)
{
GstGLDisplay *display = GST_GL_DISPLAY (object);
if (display->mutex && display->gl_window) {
gst_gl_display_lock (display);
gst_gl_window_set_resize_callback (display->gl_window, NULL, NULL);
gst_gl_window_set_draw_callback (display->gl_window, NULL, NULL);
gst_gl_window_set_close_callback (display->gl_window, NULL, NULL);
GST_INFO ("send quit gl window loop");
gst_gl_window_quit_loop (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_destroy_context), display);
GST_INFO ("quit sent to gl window loop");
g_cond_wait (display->cond_destroy_context, display->mutex);
GST_INFO ("quit received from gl window");
gst_gl_display_unlock (display);
}
if (display->gl_thread) {
gpointer ret = g_thread_join (display->gl_thread);
GST_INFO ("gl thread joined");
if (ret != NULL)
GST_ERROR ("gl thread returned a not null pointer");
display->gl_thread = NULL;
}
if (display->texture_pool) {
//texture pool is empty after destroying the gl context
if (g_hash_table_size (display->texture_pool) != 0)
GST_ERROR ("texture pool is not empty");
g_hash_table_unref (display->texture_pool);
display->texture_pool = NULL;
}
if (display->mutex) {
g_mutex_free (display->mutex);
display->mutex = NULL;
}
if (display->cond_destroy_context) {
g_cond_free (display->cond_destroy_context);
display->cond_destroy_context = NULL;
}
if (display->cond_create_context) {
g_cond_free (display->cond_create_context);
display->cond_create_context = NULL;
}
if (display->clientReshapeCallback)
display->clientReshapeCallback = NULL;
if (display->clientDrawCallback)
display->clientDrawCallback = NULL;
if (display->client_data)
display->client_data = NULL;
if (display->use_fbo_scene_cb)
display->use_fbo_scene_cb = NULL;
if (display->use_fbo_scene_cb_v2)
display->use_fbo_scene_cb_v2 = NULL;
if (display->use_fbo_stuff)
display->use_fbo_stuff = NULL;
if (display->error_message) {
g_free (display->error_message);
display->error_message = NULL;
}
}
//------------------------------------------------------------
//------------------ BEGIN GL THREAD PROCS -------------------
//------------------------------------------------------------
/* Called in the gl thread */
void
gst_gl_display_set_error (GstGLDisplay * display, const char *format, ...)
{
va_list args;
if (display->error_message)
g_free (display->error_message);
va_start (args, format);
display->error_message = g_strdup_vprintf (format, args);
va_end (args);
display->isAlive = FALSE;
}
gpointer
gst_gl_display_thread_create_context (GstGLDisplay * display)
{
GLenum err = GLEW_OK;
gst_gl_display_lock (display);
display->gl_window = gst_gl_window_new (display->external_gl_context);
if (!display->gl_window) {
gst_gl_display_set_error (display, "Failed to create gl window");
g_cond_signal (display->cond_create_context);
gst_gl_display_unlock (display);
return NULL;
}
GST_INFO ("gl window created");
#ifndef OPENGL_ES2
err = glewInit ();
#endif
if (err != GLEW_OK) {
#ifndef OPENGL_ES2
gst_gl_display_set_error (display, "Failed to init GLEW: %s",
glewGetErrorString (err));
#endif
} else {
#ifndef OPENGL_ES2
//OpenGL > 1.2.0 and Glew > 1.4.0
GString *opengl_version = NULL;
gint opengl_version_major = 0;
gint opengl_version_minor = 0;
#endif
GLenum gl_err = GL_NO_ERROR;
if (glGetString (GL_VERSION))
GST_INFO ("GL_VERSION: %s", glGetString (GL_VERSION));
#ifndef OPENGL_ES2
GST_INFO ("GLEW_VERSION: %s", glewGetString (GLEW_VERSION));
#endif
if (glGetString (GL_SHADING_LANGUAGE_VERSION))
GST_INFO ("GL_SHADING_LANGUAGE_VERSION: %s",
glGetString (GL_SHADING_LANGUAGE_VERSION));
else
GST_INFO ("Your driver does not support GLSL (OpenGL Shading Language)");
if (glGetString (GL_VENDOR))
GST_INFO ("GL_VENDOR: %s", glGetString (GL_VENDOR));
if (glGetString (GL_RENDERER))
GST_INFO ("GL_RENDERER: %s", glGetString (GL_RENDERER));
gl_err = glGetError ();
if (gl_err != GL_NO_ERROR) {
gst_gl_display_set_error (display, "glGetString error: 0x%x", gl_err);
}
#ifndef OPENGL_ES2
if (glGetString (GL_VERSION) && gl_err == GL_NO_ERROR) {
opengl_version =
g_string_truncate (g_string_new ((gchar *) glGetString (GL_VERSION)),
3);
sscanf (opengl_version->str, "%d.%d", &opengl_version_major,
&opengl_version_minor);
g_string_free (opengl_version, TRUE);
if ((opengl_version_major < 1) ||
(GLEW_VERSION_MAJOR < 1) ||
(opengl_version_major < 2 && opengl_version_major >= 1
&& opengl_version_minor < 2) || (GLEW_VERSION_MAJOR < 2
&& GLEW_VERSION_MAJOR >= 1 && GLEW_VERSION_MINOR < 4)) {
//turn off the pipeline, the old drivers are not yet supported
gst_gl_display_set_error (display,
"Required OpenGL >= 1.2.0 and Glew >= 1.4.0");
}
}
#else
if (!GL_ES_VERSION_2_0) {
gst_gl_display_set_error (display, "Required OpenGL ES > 2.0");
}
#endif
}
//setup callbacks
gst_gl_window_set_resize_callback (display->gl_window,
GST_GL_WINDOW_CB2 (gst_gl_display_on_resize), display);
gst_gl_window_set_draw_callback (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_on_draw), display);
gst_gl_window_set_close_callback (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_on_close), display);
g_cond_signal (display->cond_create_context);
gst_gl_display_unlock (display);
gst_gl_window_run_loop (display->gl_window);
GST_INFO ("loop exited\n");
gst_gl_display_lock (display);
display->isAlive = FALSE;
g_object_unref (G_OBJECT (display->gl_window));
display->gl_window = NULL;
g_cond_signal (display->cond_destroy_context);
gst_gl_display_unlock (display);
return NULL;
}
/* Called in the gl thread */
void
gst_gl_display_thread_destroy_context (GstGLDisplay * display)
{
//colorspace_conversion specific
switch (display->upload_colorspace_conversion) {
case GST_GL_DISPLAY_CONVERSION_MESA:
case GST_GL_DISPLAY_CONVERSION_MATRIX:
break;
case GST_GL_DISPLAY_CONVERSION_GLSL:
{
glUseProgramObjectARB (0);
if (display->shader_upload_YUY2) {
g_object_unref (G_OBJECT (display->shader_upload_YUY2));
display->shader_upload_YUY2 = NULL;
}
if (display->shader_upload_UYVY) {
g_object_unref (G_OBJECT (display->shader_upload_UYVY));
display->shader_upload_UYVY = NULL;
}
if (display->shader_upload_I420_YV12) {
g_object_unref (G_OBJECT (display->shader_upload_I420_YV12));
display->shader_upload_I420_YV12 = NULL;
}
if (display->shader_upload_AYUV) {
g_object_unref (G_OBJECT (display->shader_upload_AYUV));
display->shader_upload_AYUV = NULL;
}
if (display->shader_download_YUY2) {
g_object_unref (G_OBJECT (display->shader_download_YUY2));
display->shader_download_YUY2 = NULL;
}
if (display->shader_download_UYVY) {
g_object_unref (G_OBJECT (display->shader_download_UYVY));
display->shader_download_UYVY = NULL;
}
if (display->shader_download_I420_YV12) {
g_object_unref (G_OBJECT (display->shader_download_I420_YV12));
display->shader_download_I420_YV12 = NULL;
}
if (display->shader_download_AYUV) {
g_object_unref (G_OBJECT (display->shader_download_AYUV));
display->shader_download_AYUV = NULL;
}
#ifdef OPENGL_ES2
if (display->shader_download_RGB) {
g_object_unref (G_OBJECT (display->shader_download_RGB));
display->shader_download_RGB = NULL;
}
#endif
}
break;
default:
GST_ERROR ("Unknow colorspace conversion %d",
display->upload_colorspace_conversion);
}
if (display->upload_fbo) {
glDeleteFramebuffersEXT (1, &display->upload_fbo);
display->upload_fbo = 0;
}
if (display->upload_depth_buffer) {
glDeleteRenderbuffersEXT (1, &display->upload_depth_buffer);
display->upload_depth_buffer = 0;
}
if (display->download_fbo) {
glDeleteFramebuffersEXT (1, &display->download_fbo);
display->download_fbo = 0;
}
if (display->download_depth_buffer) {
glDeleteRenderbuffersEXT (1, &display->download_depth_buffer);
display->download_depth_buffer = 0;
}
if (display->download_texture) {
glDeleteTextures (1, &display->download_texture);
display->download_texture = 0;
}
if (display->download_texture_u) {
glDeleteTextures (1, &display->download_texture_u);
display->download_texture_u = 0;
}
if (display->download_texture_v) {
glDeleteTextures (1, &display->download_texture_v);
display->download_texture_v = 0;
}
if (display->upload_intex != 0) {
glDeleteTextures (1, &display->upload_intex);
display->upload_intex = 0;
}
if (display->upload_intex_u != 0) {
glDeleteTextures (1, &display->upload_intex_u);
display->upload_intex_u = 0;
}
if (display->upload_intex_v != 0) {
glDeleteTextures (1, &display->upload_intex_v);
display->upload_intex_v = 0;
}
#ifdef OPENGL_ES2
if (display->redisplay_shader) {
g_object_unref (G_OBJECT (display->redisplay_shader));
display->redisplay_shader = NULL;
}
#endif
GST_INFO ("Cleaning texture pool");
//clean up the texture pool
g_hash_table_foreach_remove (display->texture_pool,
gst_gl_display_texture_pool_func_clean, NULL);
GST_INFO ("Context destroyed");
}
void
gst_gl_display_thread_run_generic (GstGLDisplay * display)
{
display->generic_callback (display, display->data);
}
/* Called in the gl thread */
void
gst_gl_display_thread_gen_texture (GstGLDisplay * display)
{
//setup a texture to render to (this one will be in a gl buffer)
gst_gl_display_glgen_texture (display, &display->gen_texture,
display->gen_texture_width, display->gen_texture_height);
}
#ifdef OPENGL_ES2
/* Called in the gl thread */
void
gst_gl_display_thread_init_redisplay (GstGLDisplay * display)
{
GError *error = NULL;
display->redisplay_shader = gst_gl_shader_new ();
gst_gl_shader_set_vertex_source (display->redisplay_shader,
display->redisplay_vertex_shader_str);
gst_gl_shader_set_fragment_source (display->redisplay_shader,
display->redisplay_fragment_shader_str);
gst_gl_shader_compile (display->redisplay_shader, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
} else {
display->redisplay_attr_position_loc =
gst_gl_shader_get_attribute_location (display->redisplay_shader,
"a_position");
display->redisplay_attr_texture_loc =
gst_gl_shader_get_attribute_location (display->redisplay_shader,
"a_texCoord");
}
}
#endif
/* Called in the gl thread */
void
gst_gl_display_thread_init_upload (GstGLDisplay * display)
{
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
//color space conversion is not needed
//but if the size is different we need to redraw it
//using fbo
if (display->upload_width != display->upload_data_width ||
display->upload_height != display->upload_data_height)
gst_gl_display_thread_init_upload_fbo (display);
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_AYUV:
//color space conversion is needed
{
//check if fragment shader is available, then load them
/* shouldn't we require ARB_shading_language_100? --Filippo */
if (GLEW_ARB_fragment_shader) {
#ifdef OPENGL_ES2
GError *error = NULL;
#endif
GST_INFO ("Context, ARB_fragment_shader supported: yes");
display->upload_colorspace_conversion = GST_GL_DISPLAY_CONVERSION_GLSL;
gst_gl_display_thread_init_upload_fbo (display);
if (!display->isAlive)
break;
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_YUY2:
{
gchar text_shader_upload_YUY2[2048];
sprintf (text_shader_upload_YUY2,
display->text_shader_upload_YUY2_UYVY, 'r', 'g', 'a');
display->shader_upload_YUY2 = gst_gl_shader_new ();
#ifndef OPENGL_ES2
if (!gst_gl_shader_compile_and_check (display->shader_upload_YUY2,
text_shader_upload_YUY2, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (display,
"Failed to initialize shader for uploading YUY2");
g_object_unref (G_OBJECT (display->shader_upload_YUY2));
display->shader_upload_YUY2 = NULL;
}
#else
gst_gl_shader_set_vertex_source (display->shader_upload_YUY2,
display->text_vertex_shader_upload);
gst_gl_shader_set_fragment_source (display->shader_upload_YUY2,
text_shader_upload_YUY2);
gst_gl_shader_compile (display->shader_upload_YUY2, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
g_object_unref (G_OBJECT (display->shader_upload_YUY2));
display->shader_upload_YUY2 = NULL;
} else {
display->shader_upload_attr_position_loc =
gst_gl_shader_get_attribute_location
(display->shader_upload_YUY2, "a_position");
display->shader_upload_attr_texture_loc =
gst_gl_shader_get_attribute_location
(display->shader_upload_YUY2, "a_texCoord");
}
#endif
}
break;
case GST_VIDEO_FORMAT_UYVY:
{
gchar text_shader_upload_UYVY[2048];
sprintf (text_shader_upload_UYVY,
#ifndef OPENGL_ES2
display->text_shader_upload_YUY2_UYVY, 'a', 'b', 'r');
#else
display->text_shader_upload_YUY2_UYVY, 'a', 'r', 'b');
#endif
display->shader_upload_UYVY = gst_gl_shader_new ();
#ifndef OPENGL_ES2
if (!gst_gl_shader_compile_and_check (display->shader_upload_UYVY,
text_shader_upload_UYVY, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (display,
"Failed to initialize shader for uploading UYVY");
g_object_unref (G_OBJECT (display->shader_upload_UYVY));
display->shader_upload_UYVY = NULL;
}
#else
gst_gl_shader_set_vertex_source (display->shader_upload_UYVY,
display->text_vertex_shader_upload);
gst_gl_shader_set_fragment_source (display->shader_upload_UYVY,
text_shader_upload_UYVY);
gst_gl_shader_compile (display->shader_upload_UYVY, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
g_object_unref (G_OBJECT (display->shader_upload_UYVY));
display->shader_upload_UYVY = NULL;
} else {
display->shader_upload_attr_position_loc =
gst_gl_shader_get_attribute_location
(display->shader_upload_UYVY, "a_position");
display->shader_upload_attr_texture_loc =
gst_gl_shader_get_attribute_location
(display->shader_upload_UYVY, "a_texCoord");
}
#endif
}
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
{
#ifndef OPENGL_ES2
gchar text_shader_upload_I420_YV12[2048];
if ((g_ascii_strncasecmp ("ATI", (gchar *) glGetString (GL_VENDOR),
3) == 0)
&& (g_ascii_strncasecmp ("ATI Mobility Radeon HD",
(gchar *) glGetString (GL_RENDERER), 22) != 0)
&& (g_ascii_strncasecmp ("ATI Radeon HD",
(gchar *) glGetString (GL_RENDERER), 13) != 0))
sprintf (text_shader_upload_I420_YV12,
display->text_shader_upload_I420_YV12, "*0.5", "");
else
sprintf (text_shader_upload_I420_YV12,
display->text_shader_upload_I420_YV12, "", "*0.5");
#endif
display->shader_upload_I420_YV12 = gst_gl_shader_new ();
#ifndef OPENGL_ES2
if (!gst_gl_shader_compile_and_check
(display->shader_upload_I420_YV12, text_shader_upload_I420_YV12,
GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (display,
"Failed to initialize shader for uploading I420 or YV12");
g_object_unref (G_OBJECT (display->shader_upload_I420_YV12));
display->shader_upload_I420_YV12 = NULL;
}
#else
gst_gl_shader_set_vertex_source (display->shader_upload_I420_YV12,
display->text_vertex_shader_upload);
gst_gl_shader_set_fragment_source (display->shader_upload_I420_YV12,
display->text_shader_upload_I420_YV12);
gst_gl_shader_compile (display->shader_upload_I420_YV12, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
g_object_unref (G_OBJECT (display->shader_upload_I420_YV12));
display->shader_upload_I420_YV12 = NULL;
} else {
display->shader_upload_attr_position_loc =
gst_gl_shader_get_attribute_location
(display->shader_upload_I420_YV12, "a_position");
display->shader_upload_attr_texture_loc =
gst_gl_shader_get_attribute_location
(display->shader_upload_I420_YV12, "a_texCoord");
}
#endif
}
break;
case GST_VIDEO_FORMAT_AYUV:
{
display->shader_upload_AYUV = gst_gl_shader_new ();
#ifndef OPENGL_ES2
if (!gst_gl_shader_compile_and_check (display->shader_upload_AYUV,
display->text_shader_upload_AYUV,
GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (display,
"Failed to initialize shader for uploading AYUV");
g_object_unref (G_OBJECT (display->shader_upload_AYUV));
display->shader_upload_AYUV = NULL;
}
#else
gst_gl_shader_set_vertex_source (display->shader_upload_AYUV,
display->text_vertex_shader_upload);
gst_gl_shader_set_fragment_source (display->shader_upload_AYUV,
display->text_shader_upload_AYUV);
gst_gl_shader_compile (display->shader_upload_AYUV, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
g_object_unref (G_OBJECT (display->shader_upload_AYUV));
display->shader_upload_AYUV = NULL;
} else {
display->shader_upload_attr_position_loc =
gst_gl_shader_get_attribute_location
(display->shader_upload_AYUV, "a_position");
display->shader_upload_attr_texture_loc =
gst_gl_shader_get_attribute_location
(display->shader_upload_AYUV, "a_texCoord");
}
#endif
}
break;
default:
gst_gl_display_set_error (display,
"Unsupported upload video format %d",
display->upload_video_format);
}
}
//check if YCBCR MESA is available
else if (GLEW_MESA_ycbcr_texture) {
//GLSL and Color Matrix are not available on your drivers, switch to YCBCR MESA
GST_INFO ("Context, ARB_fragment_shader supported: no");
GST_INFO ("Context, GLEW_MESA_ycbcr_texture supported: yes");
display->upload_colorspace_conversion = GST_GL_DISPLAY_CONVERSION_MESA;
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
//color space conversion is not needed
//but if the size is different we need to redraw it
//using fbo
if (display->upload_width != display->upload_data_width ||
display->upload_height != display->upload_data_height)
gst_gl_display_thread_init_upload_fbo (display);
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_AYUV:
//turn off the pipeline because
//MESA only support YUY2 and UYVY
gst_gl_display_set_error (display,
"Your MESA version only supports YUY2 and UYVY (GLSL is required for others yuv formats)");
break;
default:
gst_gl_display_set_error (display,
"Unsupported upload video format %d",
display->upload_video_format);
}
}
//check if color matrix is available
else if (GLEW_ARB_imaging) {
//GLSL is not available on your drivers, switch to Color Matrix
GST_INFO ("Context, ARB_fragment_shader supported: no");
GST_INFO ("Context, GLEW_MESA_ycbcr_texture supported: no");
GST_INFO ("Context, GLEW_ARB_imaging supported: yes");
display->upload_colorspace_conversion =
GST_GL_DISPLAY_CONVERSION_MATRIX;
//turn off the pipeline because we do not support it yet
gst_gl_display_set_error (display,
"Colorspace conversion using Color Matrix is not yet supported");
} else {
//turn off the pipeline because colorspace conversion is not possible
gst_gl_display_set_error (display,
"ARB_fragment_shader supported, GLEW_ARB_imaging supported, GLEW_MESA_ycbcr_texture supported, not supported");
}
}
break;
default:
gst_gl_display_set_error (display, "Unsupported upload video format %d",
display->upload_video_format);
}
}
/* Called by the idle function */
void
gst_gl_display_thread_do_upload (GstGLDisplay * display)
{
gst_gl_display_thread_do_upload_fill (display);
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
//color space conversion is not needed
//but if the size is different we need to redraw it
//using fbo
if (display->upload_width != display->upload_data_width ||
display->upload_height != display->upload_data_height)
gst_gl_display_thread_do_upload_draw (display);
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_AYUV:
{
switch (display->upload_colorspace_conversion) {
case GST_GL_DISPLAY_CONVERSION_GLSL:
//color space conversion is needed
gst_gl_display_thread_do_upload_draw (display);
break;
case GST_GL_DISPLAY_CONVERSION_MATRIX:
//color space conversion is needed
//not yet supported
break;
case GST_GL_DISPLAY_CONVERSION_MESA:
//color space conversion is not needed
//but if the size is different we need to redraw it
//using fbo
if (display->upload_width != display->upload_data_width ||
display->upload_height != display->upload_data_height)
gst_gl_display_thread_do_upload_draw (display);
break;
default:
gst_gl_display_set_error (display, "Unknow colorspace conversion %d",
display->upload_colorspace_conversion);
}
}
break;
default:
gst_gl_display_set_error (display, "Unsupported upload video format %d",
display->upload_video_format);
}
}
/* Called in the gl thread */
void
gst_gl_display_thread_init_download (GstGLDisplay * display)
{
switch (display->download_video_format) {
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
//color space conversion is not needed
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_AYUV:
//color space conversion is needed
{
if (GLEW_EXT_framebuffer_object) {
GST_INFO ("Context, EXT_framebuffer_object supported: yes");
//-- init output frame buffer object (GL -> video)
//setup FBO
glGenFramebuffersEXT (1, &display->download_fbo);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, display->download_fbo);
//setup the render buffer for depth
glGenRenderbuffersEXT (1, &display->download_depth_buffer);
glBindRenderbufferEXT (GL_RENDERBUFFER_EXT,
display->download_depth_buffer);
#ifndef OPENGL_ES2
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT,
display->download_width, display->download_height);
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH24_STENCIL8_EXT,
display->download_width, display->download_height);
#else
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT16,
display->download_width, display->download_height);
#endif
//setup a first texture to render to
glGenTextures (1, &display->download_texture);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->download_texture);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
display->download_width, display->download_height, 0, GL_RGBA,
GL_UNSIGNED_BYTE, NULL);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
//attach the first texture to the FBO to renderer to
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_RECTANGLE_ARB, display->download_texture, 0);
switch (display->download_video_format) {
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_AYUV:
//only one attached texture is needed
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
//setup a second texture to render to
glGenTextures (1, &display->download_texture_u);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB,
display->download_texture_u);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
display->download_width, display->download_height, 0, GL_RGBA,
GL_UNSIGNED_BYTE, NULL);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
//attach the second texture to the FBO to renderer to
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_RECTANGLE_ARB,
display->download_texture_u, 0);
//setup a third texture to render to
glGenTextures (1, &display->download_texture_v);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB,
display->download_texture_v);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
display->download_width, display->download_height, 0, GL_RGBA,
GL_UNSIGNED_BYTE, NULL);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
//attach the third texture to the FBO to renderer to
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT2_EXT, GL_TEXTURE_RECTANGLE_ARB,
display->download_texture_v, 0);
display->multipleRT[0] = GL_COLOR_ATTACHMENT0_EXT;
display->multipleRT[1] = GL_COLOR_ATTACHMENT1_EXT;
display->multipleRT[2] = GL_COLOR_ATTACHMENT2_EXT;
break;
default:
gst_gl_display_set_error (display,
"Unsupported download video format %d",
display->download_video_format);
}
//attach the depth render buffer to the FBO
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT,
GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT,
display->download_depth_buffer);
#ifndef OPENGL_ES2
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT,
GL_STENCIL_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT,
display->download_depth_buffer);
#endif
gst_gl_display_check_framebuffer_status ();
if (glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) !=
GL_FRAMEBUFFER_COMPLETE_EXT)
gst_gl_display_set_error (display,
"GL framebuffer status incomplete");
//unbind the FBO
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
} else {
//turn off the pipeline because Frame buffer object is a requirement when using filters
//or when using GLSL colorspace conversion
gst_gl_display_set_error (display,
"Context, EXT_framebuffer_object supported: no");
}
}
break;
default:
gst_gl_display_set_error (display, "Unsupported download video format %d",
display->download_video_format);
}
switch (display->download_video_format) {
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
//color space conversion is not needed
#ifdef OPENGL_ES2
{
//glGetTexImage2D no available in OpenGL ES 2.0
GError *error = NULL;
display->shader_download_RGB = gst_gl_shader_new ();
gst_gl_shader_set_vertex_source (display->shader_download_RGB,
display->text_vertex_shader_download);
gst_gl_shader_set_fragment_source (display->shader_download_RGB,
display->text_fragment_shader_download_RGB);
gst_gl_shader_compile (display->shader_download_RGB, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
g_object_unref (G_OBJECT (display->shader_download_RGB));
display->shader_download_RGB = NULL;
} else {
display->shader_download_attr_position_loc =
gst_gl_shader_get_attribute_location (display->shader_download_RGB,
"a_position");
display->shader_download_attr_texture_loc =
gst_gl_shader_get_attribute_location (display->shader_download_RGB,
"a_texCoord");
}
}
#endif
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_AYUV:
//color space conversion is needed
{
//check if fragment shader is available, then load them
//GLSL is a requirement for donwload
if (GLEW_ARB_fragment_shader) {
#ifdef OPENGL_ES2
GError *error = NULL;
#endif
switch (display->download_video_format) {
case GST_VIDEO_FORMAT_YUY2:
{
gchar text_shader_download_YUY2[2048];
sprintf (text_shader_download_YUY2,
display->text_shader_download_YUY2_UYVY, "y2,u,y1,v");
display->shader_download_YUY2 = gst_gl_shader_new ();
#ifndef OPENGL_ES2
if (!gst_gl_shader_compile_and_check (display->shader_download_YUY2,
text_shader_download_YUY2, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (display,
"Failed to initialize shader for downloading YUY2");
g_object_unref (G_OBJECT (display->shader_download_YUY2));
display->shader_download_YUY2 = NULL;
}
#else
gst_gl_shader_set_vertex_source (display->shader_download_YUY2,
display->text_vertex_shader_download);
gst_gl_shader_set_fragment_source (display->shader_download_YUY2,
text_shader_download_YUY2);
gst_gl_shader_compile (display->shader_download_YUY2, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
g_object_unref (G_OBJECT (display->shader_download_YUY2));
display->shader_download_YUY2 = NULL;
} else {
display->shader_download_attr_position_loc =
gst_gl_shader_get_attribute_location
(display->shader_download_YUY2, "a_position");
display->shader_download_attr_texture_loc =
gst_gl_shader_get_attribute_location
(display->shader_download_YUY2, "a_texCoord");
}
#endif
}
break;
case GST_VIDEO_FORMAT_UYVY:
{
gchar text_shader_download_UYVY[2048];
sprintf (text_shader_download_UYVY,
display->text_shader_download_YUY2_UYVY, "v,y1,u,y2");
display->shader_download_UYVY = gst_gl_shader_new ();
#ifndef OPENGL_ES2
if (!gst_gl_shader_compile_and_check (display->shader_download_UYVY,
text_shader_download_UYVY, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (display,
"Failed to initialize shader for downloading UYVY");
g_object_unref (G_OBJECT (display->shader_download_UYVY));
display->shader_download_UYVY = NULL;
}
#else
gst_gl_shader_set_vertex_source (display->shader_download_UYVY,
display->text_vertex_shader_download);
gst_gl_shader_set_fragment_source (display->shader_download_UYVY,
text_shader_download_UYVY);
gst_gl_shader_compile (display->shader_download_UYVY, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
g_object_unref (G_OBJECT (display->shader_download_UYVY));
display->shader_download_UYVY = NULL;
} else {
display->shader_download_attr_position_loc =
gst_gl_shader_get_attribute_location
(display->shader_download_UYVY, "a_position");
display->shader_download_attr_texture_loc =
gst_gl_shader_get_attribute_location
(display->shader_download_UYVY, "a_texCoord");
}
#endif
}
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
display->shader_download_I420_YV12 = gst_gl_shader_new ();
if (!gst_gl_shader_compile_and_check
(display->shader_download_I420_YV12,
display->text_shader_download_I420_YV12,
GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (display,
"Failed to initialize shader for downloading I420 or YV12");
g_object_unref (G_OBJECT (display->shader_download_I420_YV12));
display->shader_download_I420_YV12 = NULL;
}
break;
case GST_VIDEO_FORMAT_AYUV:
display->shader_download_AYUV = gst_gl_shader_new ();
#ifndef OPENGL_ES2
if (!gst_gl_shader_compile_and_check (display->shader_download_AYUV,
display->text_shader_download_AYUV,
GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (display,
"Failed to initialize shader for downloading AYUV");
g_object_unref (G_OBJECT (display->shader_download_AYUV));
display->shader_download_AYUV = NULL;
}
#else
gst_gl_shader_set_vertex_source (display->shader_download_AYUV,
display->text_vertex_shader_download);
gst_gl_shader_set_fragment_source (display->shader_download_AYUV,
display->text_shader_download_AYUV);
gst_gl_shader_compile (display->shader_download_AYUV, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
g_object_unref (G_OBJECT (display->shader_download_AYUV));
display->shader_download_AYUV = NULL;
} else {
display->shader_download_attr_position_loc =
gst_gl_shader_get_attribute_location
(display->shader_download_AYUV, "a_position");
display->shader_download_attr_texture_loc =
gst_gl_shader_get_attribute_location
(display->shader_download_AYUV, "a_texCoord");
}
#endif
break;
default:
gst_gl_display_set_error (display,
"Unsupported download video format %d",
display->download_video_format);
}
} else {
//turn off the pipeline because colorspace conversion is not possible
gst_gl_display_set_error (display,
"Context, ARB_fragment_shader supported: no");
}
}
break;
default:
gst_gl_display_set_error (display, "Unsupported download video format %d",
display->download_video_format);
}
}
/* Called in the gl thread */
void
gst_gl_display_thread_do_download (GstGLDisplay * display)
{
switch (display->download_video_format) {
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
//color space conversion is not needed
gst_gl_display_thread_do_download_draw_rgb (display);
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_AYUV:
//color space conversion is needed
gst_gl_display_thread_do_download_draw_yuv (display);
break;
default:
gst_gl_display_set_error (display, "Unsupported download video format %d",
display->download_video_format);
}
}
/* Called in the gl thread */
void
gst_gl_display_thread_gen_fbo (GstGLDisplay * display)
{
//a texture must be attached to the FBO
GLuint fake_texture = 0;
//-- generate frame buffer object
if (!GLEW_EXT_framebuffer_object) {
//turn off the pipeline because Frame buffer object is a not present
gst_gl_display_set_error (display,
"Context, EXT_framebuffer_object not supported");
return;
}
//setup FBO
glGenFramebuffersEXT (1, &display->generated_fbo);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, display->generated_fbo);
//setup the render buffer for depth
glGenRenderbuffersEXT (1, &display->generated_depth_buffer);
glBindRenderbufferEXT (GL_RENDERBUFFER_EXT, display->generated_depth_buffer);
#ifndef OPENGL_ES2
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT,
display->gen_fbo_width, display->gen_fbo_height);
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH24_STENCIL8_EXT,
display->gen_fbo_width, display->gen_fbo_height);
#else
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT16,
display->gen_fbo_width, display->gen_fbo_height);
#endif
//setup a texture to render to
glGenTextures (1, &fake_texture);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, fake_texture);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
display->gen_fbo_width, display->gen_fbo_height, 0, GL_RGBA,
GL_UNSIGNED_BYTE, NULL);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
//attach the texture to the FBO to renderer to
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_RECTANGLE_ARB, fake_texture, 0);
//attach the depth render buffer to the FBO
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT, display->generated_depth_buffer);
#ifndef OPENGL_ES2
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT, display->generated_depth_buffer);
#endif
if (glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) !=
GL_FRAMEBUFFER_COMPLETE_EXT)
gst_gl_display_set_error (display, "GL framebuffer status incomplete");
//unbind the FBO
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
glDeleteTextures (1, &fake_texture);
}
/* Called in the gl thread */
void
gst_gl_display_thread_use_fbo (GstGLDisplay * display)
{
#ifdef OPENGL_ES2
GLint viewport_dim[4];
#endif
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, display->use_fbo);
//setup a texture to render to
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->use_fbo_texture);
//attach the texture to the FBO to renderer to
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_RECTANGLE_ARB, display->use_fbo_texture, 0);
if (GLEW_ARB_fragment_shader)
gst_gl_shader_use (NULL);
#ifndef OPENGL_ES2
glPushAttrib (GL_VIEWPORT_BIT);
glMatrixMode (GL_PROJECTION);
glPushMatrix ();
glLoadIdentity ();
switch (display->use_fbo_projection) {
case GST_GL_DISPLAY_PROJECTION_ORTHO2D:
gluOrtho2D (display->use_fbo_proj_param1, display->use_fbo_proj_param2,
display->use_fbo_proj_param3, display->use_fbo_proj_param4);
break;
case GST_GL_DISPLAY_PROJECTION_PERSPECTIVE:
gluPerspective (display->use_fbo_proj_param1,
display->use_fbo_proj_param2, display->use_fbo_proj_param3,
display->use_fbo_proj_param4);
break;
default:
gst_gl_display_set_error (display, "Unknow fbo projection %d",
display->use_fbo_projection);
}
glMatrixMode (GL_MODELVIEW);
glPushMatrix ();
glLoadIdentity ();
#else // OPENGL_ES2
glGetIntegerv (GL_VIEWPORT, viewport_dim);
#endif
glViewport (0, 0, display->use_fbo_width, display->use_fbo_height);
#ifndef OPENGL_ES2
glDrawBuffer (GL_COLOR_ATTACHMENT0_EXT);
#endif
glClearColor (0.0, 0.0, 0.0, 0.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//the opengl scene
display->use_fbo_scene_cb (display->input_texture_width,
display->input_texture_height, display->input_texture,
display->use_fbo_stuff);
#ifndef OPENGL_ES2
glDrawBuffer (GL_NONE);
glMatrixMode (GL_PROJECTION);
glPopMatrix ();
glMatrixMode (GL_MODELVIEW);
glPopMatrix ();
glPopAttrib ();
#else
glViewport (viewport_dim[0], viewport_dim[1], viewport_dim[2],
viewport_dim[3]);
#endif
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
}
/* Called in a gl thread
* Need full shader support */
void
gst_gl_display_thread_use_fbo_v2 (GstGLDisplay * display)
{
GLint viewport_dim[4];
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, display->use_fbo);
//setup a texture to render to
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->use_fbo_texture);
//attach the texture to the FBO to renderer to
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_RECTANGLE_ARB, display->use_fbo_texture, 0);
glGetIntegerv (GL_VIEWPORT, viewport_dim);
glViewport (0, 0, display->use_fbo_width, display->use_fbo_height);
#ifndef OPENGL_ES2
glDrawBuffer (GL_COLOR_ATTACHMENT0_EXT);
#endif
glClearColor (0.0, 0.0, 0.0, 0.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//the opengl scene
display->use_fbo_scene_cb_v2 (display->use_fbo_stuff);
#ifndef OPENGL_ES2
glDrawBuffer (GL_NONE);
#endif
glViewport (viewport_dim[0], viewport_dim[1],
viewport_dim[2], viewport_dim[3]);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
}
/* Called in the gl thread */
void
gst_gl_display_thread_del_fbo (GstGLDisplay * display)
{
if (display->del_fbo) {
glDeleteFramebuffersEXT (1, &display->del_fbo);
display->del_fbo = 0;
}
if (display->del_depth_buffer) {
glDeleteRenderbuffersEXT (1, &display->del_depth_buffer);
display->del_depth_buffer = 0;
}
}
/* Called in the gl thread */
void
gst_gl_display_thread_gen_shader (GstGLDisplay * display)
{
if (GLEW_ARB_fragment_shader) {
if (display->gen_shader_vertex_source ||
display->gen_shader_fragment_source) {
GError *error = NULL;
display->gen_shader = gst_gl_shader_new ();
if (display->gen_shader_vertex_source)
gst_gl_shader_set_vertex_source (display->gen_shader,
display->gen_shader_vertex_source);
if (display->gen_shader_fragment_source)
gst_gl_shader_set_fragment_source (display->gen_shader,
display->gen_shader_fragment_source);
gst_gl_shader_compile (display->gen_shader, &error);
if (error) {
gst_gl_display_set_error (display, "%s", error->message);
g_error_free (error);
error = NULL;
gst_gl_shader_use (NULL);
g_object_unref (G_OBJECT (display->gen_shader));
display->gen_shader = NULL;
}
}
} else {
gst_gl_display_set_error (display,
"One of the filter required ARB_fragment_shader");
display->gen_shader = NULL;
}
}
/* Called in the gl thread */
void
gst_gl_display_thread_del_shader (GstGLDisplay * display)
{
if (display->del_shader) {
g_object_unref (G_OBJECT (display->del_shader));
display->del_shader = NULL;
}
}
//------------------------------------------------------------
//------------------ BEGIN GL THREAD ACTIONS -----------------
//------------------------------------------------------------
//------------------------------------------------------------
//---------------------- BEGIN PRIVATE -----------------------
//------------------------------------------------------------
void
gst_gl_display_lock (GstGLDisplay * display)
{
g_mutex_lock (display->mutex);
}
void
gst_gl_display_unlock (GstGLDisplay * display)
{
g_mutex_unlock (display->mutex);
}
void
gst_gl_display_on_resize (GstGLDisplay * display, gint width, gint height)
{
//check if a client reshape callback is registered
if (display->clientReshapeCallback)
display->clientReshapeCallback (width, height, display->client_data);
//default reshape
else {
if (display->keep_aspect_ratio) {
GstVideoRectangle src, dst, result;
src.x = 0;
src.y = 0;
src.w = display->redisplay_texture_width;
src.h = display->redisplay_texture_height;
dst.x = 0;
dst.y = 0;
dst.w = width;
dst.h = height;
gst_video_sink_center_rect (src, dst, &result, TRUE);
glViewport (result.x, result.y, result.w, result.h);
} else {
glViewport (0, 0, width, height);
}
#ifndef OPENGL_ES2
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gluOrtho2D (0, width, 0, height);
glMatrixMode (GL_MODELVIEW);
#endif
}
}
void
gst_gl_display_on_draw (GstGLDisplay * display)
{
//check if tecture is ready for being drawn
if (!display->redisplay_texture)
return;
//opengl scene
GST_DEBUG ("on draw");
//make sure that the environnement is clean
if (display->upload_colorspace_conversion == GST_GL_DISPLAY_CONVERSION_GLSL)
glUseProgramObjectARB (0);
#ifndef OPENGL_ES2
glDisable (GL_TEXTURE_RECTANGLE_ARB);
#endif
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, 0);
//check if a client draw callback is registered
if (display->clientDrawCallback) {
gboolean doRedisplay =
display->clientDrawCallback (display->redisplay_texture,
display->redisplay_texture_width, display->redisplay_texture_height,
display->client_data);
if (doRedisplay && display->gl_window)
gst_gl_window_draw_unlocked (display->gl_window,
display->redisplay_texture_width, display->redisplay_texture_height);
}
//default opengl scene
else {
#ifndef OPENGL_ES2
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->redisplay_texture);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBegin (GL_QUADS);
/* gst images are top-down while opengl plane is bottom-up */
glTexCoord2i (display->redisplay_texture_width, 0);
glVertex2f (1.0f, 1.0f);
glTexCoord2i (0, 0);
glVertex2f (-1.0f, 1.0f);
glTexCoord2i (0, display->redisplay_texture_height);
glVertex2f (-1.0f, -1.0f);
glTexCoord2i (display->redisplay_texture_width,
display->redisplay_texture_height);
glVertex2f (1.0f, -1.0f);
/*glTexCoord2i (display->redisplay_texture_width, 0);
glVertex2i (1, -1);
glTexCoord2i (0, 0);
glVertex2f (-1.0f, -1.0f);
glTexCoord2i (0, display->redisplay_texture_height);
glVertex2f (-1.0f, 1.0f);
glTexCoord2i (display->redisplay_texture_width,
display->redisplay_texture_height);
glVertex2f (1.0f, 1.0f); */
glEnd ();
glDisable (GL_TEXTURE_RECTANGLE_ARB);
#else //OPENGL_ES2
const GLfloat vVertices[] = { 1.0f, 1.0f, 0.0f,
1.0f, 0.0f,
-1.0f, 1.0f, 0.0f,
0.0f, 0.0f,
-1.0f, -1.0f, 0.0f,
0.0f, 1.0f,
1.0f, -1.0f, 0.0f,
1.0f, 1.0f
};
GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
glClear (GL_COLOR_BUFFER_BIT);
gst_gl_shader_use (display->redisplay_shader);
//Load the vertex position
glVertexAttribPointer (display->redisplay_attr_position_loc, 3, GL_FLOAT,
GL_FALSE, 5 * sizeof (GLfloat), vVertices);
//Load the texture coordinate
glVertexAttribPointer (display->redisplay_attr_texture_loc, 2, GL_FLOAT,
GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
glEnableVertexAttribArray (display->redisplay_attr_position_loc);
glEnableVertexAttribArray (display->redisplay_attr_texture_loc);
glActiveTexture (GL_TEXTURE0);
glBindTexture (GL_TEXTURE_2D, display->redisplay_texture);
gst_gl_shader_set_uniform_1i (display->redisplay_shader, "s_texture", 0);
glDrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
#endif
} //end default opengl scene
}
void
gst_gl_display_on_close (GstGLDisplay * display)
{
gst_gl_display_set_error (display, "Output window was closed");
}
/* Generate a texture if no one is available in the pool
* Called in the gl thread */
void
gst_gl_display_glgen_texture (GstGLDisplay * display, GLuint * pTexture,
GLint width, GLint height)
{
glGenTextures (1, pTexture);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, *pTexture);
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
switch (display->upload_colorspace_conversion) {
case GST_GL_DISPLAY_CONVERSION_GLSL:
case GST_GL_DISPLAY_CONVERSION_MATRIX:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
break;
case GST_GL_DISPLAY_CONVERSION_MESA:
if (display->upload_width != display->upload_data_width ||
display->upload_height != display->upload_data_height)
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
else
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_YCBCR_MESA, width,
height, 0, GL_YCBCR_MESA, GL_UNSIGNED_SHORT_8_8_MESA, NULL);
break;
default:
gst_gl_display_set_error (display, "Unknow colorspace conversion %d",
display->upload_colorspace_conversion);
}
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_AYUV:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
break;
default:
gst_gl_display_set_error (display, "Unsupported upload video format %d",
display->upload_video_format);
}
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
GST_LOG ("generated texture id:%d", *pTexture);
}
/* Delete a texture, actually the texture is just added to the pool
* Called in the gl thread */
void
gst_gl_display_gldel_texture (GstGLDisplay * display, GLuint * pTexture,
GLint width, GLint height)
{
//Each existing texture is destroyed only when the pool is destroyed
//The pool of textures is deleted in the GstGLDisplay destructor
GQueue *sub_texture_pool = NULL;
GstGLDisplayTex *tex = NULL;
//make a unique key from w and h
//the key cannot be w*h because (4*6 = 6*4 = 2*12 = 12*2)
guint key = (gint) width;
key <<= 16;
key |= (gint) height;
sub_texture_pool =
g_hash_table_lookup (display->texture_pool, GUINT_TO_POINTER (key));
//if the size is known
if (!sub_texture_pool) {
sub_texture_pool = g_queue_new ();
g_hash_table_insert (display->texture_pool, GUINT_TO_POINTER (key),
sub_texture_pool);
GST_INFO ("one more sub texture pool inserted: %d ", key);
GST_INFO ("nb sub texture pools: %d",
g_hash_table_size (display->texture_pool));
}
//contruct a sub texture pool element
tex = g_new0 (GstGLDisplayTex, 1);
tex->texture = *pTexture;
*pTexture = 0;
//add tex to the pool, it makes texture allocation reusable
g_queue_push_tail (sub_texture_pool, tex);
GST_LOG ("texture id:%d added to the sub texture pool: %d",
tex->texture, key);
GST_LOG ("%d texture(s) in the sub texture pool: %d",
g_queue_get_length (sub_texture_pool), key);
}
/* call when a sub texture pool is removed from the texture pool (ghash table) */
gboolean
gst_gl_display_texture_pool_func_clean (gpointer key, gpointer value,
gpointer data)
{
GQueue *sub_texture_pool = (GQueue *) value;
while (g_queue_get_length (sub_texture_pool) > 0) {
GstGLDisplayTex *tex = g_queue_pop_head (sub_texture_pool);
GST_INFO ("trying to delete texture id: %d deleted", tex->texture);
glDeleteTextures (1, &tex->texture);
GST_INFO ("texture id: %d deleted", tex->texture);
g_free (tex);
}
g_queue_free (sub_texture_pool);
return TRUE;
}
/* called in the gl thread */
void
gst_gl_display_check_framebuffer_status (void)
{
GLenum status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
switch (status) {
case GL_FRAMEBUFFER_COMPLETE_EXT:
break;
case GL_FRAMEBUFFER_UNSUPPORTED_EXT:
GST_ERROR ("GL_FRAMEBUFFER_UNSUPPORTED");
break;
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT:
GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT");
break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT:
GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT");
break;
case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT:
GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS");
break;
case GL_FRAMEBUFFER_UNDEFINED:
GST_ERROR ("GL_FRAMEBUFFER_UNDEFINED");
break;
default:
GST_ERROR ("General FBO error");
}
}
//------------------------------------------------------------
//--------------------- END PRIVATE -------------------------
//------------------------------------------------------------
//------------------------------------------------------------
//---------------------- BEGIN PUBLIC ------------------------
//------------------------------------------------------------
/* Called by the first gl element of a video/x-raw-gl flow */
GstGLDisplay *
gst_gl_display_new (void)
{
return g_object_new (GST_TYPE_GL_DISPLAY, NULL);
}
/* Create an opengl context (one context for one GstGLDisplay) */
gboolean
gst_gl_display_create_context (GstGLDisplay * display,
gulong external_gl_context)
{
gboolean isAlive = FALSE;
gst_gl_display_lock (display);
if (!display->gl_window) {
display->external_gl_context = external_gl_context;
display->gl_thread = g_thread_create (
(GThreadFunc) gst_gl_display_thread_create_context, display, TRUE,
NULL);
g_cond_wait (display->cond_create_context, display->mutex);
GST_INFO ("gl thread created");
}
isAlive = display->isAlive;
gst_gl_display_unlock (display);
return isAlive;
}
/* Called by the glimagesink element */
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)
{
gboolean isAlive = TRUE;
gst_gl_display_lock (display);
isAlive = display->isAlive;
if (isAlive) {
#ifdef OPENGL_ES2
if (!display->redisplay_shader) {
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_init_redisplay), display);
}
#endif
if (texture) {
display->redisplay_texture = texture;
display->redisplay_texture_width = gl_width;
display->redisplay_texture_height = gl_height;
}
display->keep_aspect_ratio = keep_aspect_ratio;
if (display->gl_window)
gst_gl_window_draw (display->gl_window, window_width, window_height);
isAlive = display->isAlive;
}
gst_gl_display_unlock (display);
return isAlive;
}
void
gst_gl_display_thread_add (GstGLDisplay * display,
GstGLDisplayThreadFunc func, gpointer data)
{
gst_gl_display_lock (display);
display->data = data;
display->generic_callback = func;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_run_generic), display);
gst_gl_display_unlock (display);
}
/* Called by gst_gl_buffer_new */
void
gst_gl_display_gen_texture (GstGLDisplay * display, GLuint * pTexture,
GLint width, GLint height)
{
gst_gl_display_lock (display);
if (display->isAlive) {
GQueue *sub_texture_pool = NULL;
//make a unique key from w and h
//the key cannot be w*h because (4*6 = 6*4 = 2*12 = 12*2)
guint key = (gint) width;
key <<= 16;
key |= (gint) height;
sub_texture_pool =
g_hash_table_lookup (display->texture_pool, GUINT_TO_POINTER (key));
//if there is a sub texture pool associated to the given key
if (sub_texture_pool && g_queue_get_length (sub_texture_pool) > 0) {
//a texture is available in the pool
GstGLDisplayTex *tex = g_queue_pop_head (sub_texture_pool);
*pTexture = tex->texture;
g_free (tex);
GST_LOG ("get texture id:%d from the sub texture pool: %d",
*pTexture, key);
} else {
//only in this case we want to ask a texture from the gl thread
display->gen_texture_width = width;
display->gen_texture_height = height;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_gen_texture), display);
*pTexture = display->gen_texture;
}
} else
*pTexture = 0;
gst_gl_display_unlock (display);
}
/* Called by gst_gl_buffer_finalize */
void
gst_gl_display_del_texture (GstGLDisplay * display, GLuint texture, GLint width,
GLint height)
{
gst_gl_display_lock (display);
if (texture) {
gst_gl_display_gldel_texture (display, &texture, width, height);
}
gst_gl_display_unlock (display);
}
/* Called by the first gl element of a video/x-raw-gl flow */
gboolean
gst_gl_display_init_upload (GstGLDisplay * display, GstVideoFormat video_format,
guint gl_width, guint gl_height, gint video_width, gint video_height)
{
gboolean isAlive = FALSE;
gst_gl_display_lock (display);
display->upload_video_format = video_format;
display->upload_width = gl_width;
display->upload_height = gl_height;
display->upload_data_width = video_width;
display->upload_data_height = video_height;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_init_upload), display);
isAlive = display->isAlive;
gst_gl_display_unlock (display);
return isAlive;
}
/* Called by the first gl element of a video/x-raw-gl flow */
gboolean
gst_gl_display_do_upload (GstGLDisplay * display, GLuint texture,
gint data_width, gint data_height, gpointer data)
{
gboolean isAlive = TRUE;
gst_gl_display_lock (display);
isAlive = display->isAlive;
if (isAlive) {
display->upload_outtex = texture;
display->upload_data_width = data_width;
display->upload_data_height = data_height;
display->upload_data = data;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_do_upload), display);
isAlive = display->isAlive;
}
gst_gl_display_unlock (display);
return isAlive;
}
/* Called by the gldownload and glcolorscale element */
gboolean
gst_gl_display_init_download (GstGLDisplay * display,
GstVideoFormat video_format, gint width, gint height)
{
gboolean isAlive = FALSE;
gst_gl_display_lock (display);
display->download_video_format = video_format;
display->download_width = width;
display->download_height = height;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_init_download), display);
isAlive = display->isAlive;
gst_gl_display_unlock (display);
return isAlive;
}
/* Called by the gldownload and glcolorscale element */
gboolean
gst_gl_display_do_download (GstGLDisplay * display, GLuint texture,
gint width, gint height, gpointer data)
{
gboolean isAlive = TRUE;
gst_gl_display_lock (display);
isAlive = display->isAlive;
if (isAlive) {
//data size is aocciated to the glcontext size
display->download_data = data;
display->ouput_texture = texture;
display->ouput_texture_width = width;
display->ouput_texture_height = height;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_do_download), display);
isAlive = display->isAlive;
}
gst_gl_display_unlock (display);
return isAlive;
}
/* Called by gltestsrc and glfilter */
gboolean
gst_gl_display_gen_fbo (GstGLDisplay * display, gint width, gint height,
GLuint * fbo, GLuint * depthbuffer)
{
gboolean isAlive = FALSE;
gst_gl_display_lock (display);
if (display->isAlive) {
display->gen_fbo_width = width;
display->gen_fbo_height = height;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_gen_fbo), display);
*fbo = display->generated_fbo;
*depthbuffer = display->generated_depth_buffer;
isAlive = display->isAlive;
}
gst_gl_display_unlock (display);
return isAlive;
}
/* 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_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 isAlive = TRUE;
gst_gl_display_lock (display);
isAlive = display->isAlive;
if (isAlive) {
display->use_fbo = fbo;
display->use_depth_buffer = depth_buffer;
display->use_fbo_texture = texture_fbo;
display->use_fbo_width = texture_fbo_width;
display->use_fbo_height = texture_fbo_height;
display->use_fbo_scene_cb = cb;
display->use_fbo_proj_param1 = proj_param1;
display->use_fbo_proj_param2 = proj_param2;
display->use_fbo_proj_param3 = proj_param3;
display->use_fbo_proj_param4 = proj_param4;
display->use_fbo_projection = projection;
display->use_fbo_stuff = stuff;
display->input_texture_width = input_texture_width;
display->input_texture_height = input_texture_height;
display->input_texture = input_texture;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_use_fbo), display);
isAlive = display->isAlive;
}
gst_gl_display_unlock (display);
return isAlive;
}
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)
{
gboolean isAlive = TRUE;
gst_gl_display_lock (display);
isAlive = display->isAlive;
if (isAlive) {
display->use_fbo = fbo;
display->use_depth_buffer = depth_buffer;
display->use_fbo_texture = texture_fbo;
display->use_fbo_width = texture_fbo_width;
display->use_fbo_height = texture_fbo_height;
display->use_fbo_scene_cb_v2 = cb;
display->use_fbo_stuff = stuff;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_use_fbo_v2), display);
isAlive = display->isAlive;
}
gst_gl_display_unlock (display);
return isAlive;
}
/* Called by gltestsrc and glfilter */
void
gst_gl_display_del_fbo (GstGLDisplay * display, GLuint fbo, GLuint depth_buffer)
{
gst_gl_display_lock (display);
display->del_fbo = fbo;
display->del_depth_buffer = depth_buffer;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_del_fbo), display);
gst_gl_display_unlock (display);
}
/* Called by glfilter */
gboolean
gst_gl_display_gen_shader (GstGLDisplay * display,
const gchar * shader_vertex_source,
const gchar * shader_fragment_source, GstGLShader ** shader)
{
gboolean isAlive = FALSE;
gst_gl_display_lock (display);
display->gen_shader_vertex_source = shader_vertex_source;
display->gen_shader_fragment_source = shader_fragment_source;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_gen_shader), display);
isAlive = display->isAlive;
if (shader)
*shader = display->gen_shader;
display->gen_shader = NULL;
display->gen_shader_vertex_source = NULL;
display->gen_shader_fragment_source = NULL;
gst_gl_display_unlock (display);
return isAlive;
}
/* Called by glfilter */
void
gst_gl_display_del_shader (GstGLDisplay * display, GstGLShader * shader)
{
gst_gl_display_lock (display);
display->del_shader = shader;
gst_gl_window_send_message (display->gl_window,
GST_GL_WINDOW_CB (gst_gl_display_thread_del_shader), display);
gst_gl_display_unlock (display);
}
/* Called by the glimagesink */
void
gst_gl_display_set_window_id (GstGLDisplay * display, gulong window_id)
{
gst_gl_display_lock (display);
gst_gl_window_set_external_window_id (display->gl_window, window_id);
gst_gl_display_unlock (display);
}
/* Called by the glimagesink */
void
gst_gl_display_set_client_reshape_callback (GstGLDisplay * display, CRCB cb)
{
gst_gl_display_lock (display);
display->clientReshapeCallback = cb;
gst_gl_display_unlock (display);
}
/* Called by the glimagesink */
void
gst_gl_display_set_client_draw_callback (GstGLDisplay * display, CDCB cb)
{
gst_gl_display_lock (display);
display->clientDrawCallback = cb;
gst_gl_display_unlock (display);
}
void
gst_gl_display_set_client_data (GstGLDisplay * display, gpointer data)
{
gst_gl_display_lock (display);
display->client_data = data;
gst_gl_display_unlock (display);
}
gulong
gst_gl_display_get_internal_gl_context (GstGLDisplay * display)
{
gulong external_gl_context = 0;
gst_gl_display_lock (display);
external_gl_context =
gst_gl_window_get_internal_gl_context (display->gl_window);
gst_gl_display_unlock (display);
return external_gl_context;
}
void
gst_gl_display_activate_gl_context (GstGLDisplay * display, gboolean activate)
{
if (!activate)
gst_gl_display_lock (display);
gst_gl_window_activate_gl_context (display->gl_window, activate);
if (activate)
gst_gl_display_unlock (display);
}
//------------------------------------------------------------
//------------------------ END PUBLIC ------------------------
//------------------------------------------------------------
/* called by gst_gl_display_thread_init_upload (in the gl thread) */
void
gst_gl_display_thread_init_upload_fbo (GstGLDisplay * display)
{
//Frame buffer object is a requirement for every cases
if (GLEW_EXT_framebuffer_object) {
//a texture must be attached to the FBO
GLuint fake_texture = 0;
GST_INFO ("Context, EXT_framebuffer_object supported: yes");
//-- init intput frame buffer object (video -> GL)
//setup FBO
glGenFramebuffersEXT (1, &display->upload_fbo);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, display->upload_fbo);
//setup the render buffer for depth
glGenRenderbuffersEXT (1, &display->upload_depth_buffer);
glBindRenderbufferEXT (GL_RENDERBUFFER_EXT, display->upload_depth_buffer);
#ifndef OPENGL_ES2
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT,
display->upload_width, display->upload_height);
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH24_STENCIL8_EXT,
display->upload_width, display->upload_height);
#else
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT16,
display->upload_width, display->upload_height);
#endif
//a fake texture is attached to the upload FBO (cannot init without it)
glGenTextures (1, &fake_texture);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, fake_texture);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
display->upload_width, display->upload_height, 0, GL_RGBA,
GL_UNSIGNED_BYTE, NULL);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
//attach the texture to the FBO to renderer to
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_RECTANGLE_ARB, fake_texture, 0);
//attach the depth render buffer to the FBO
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT, display->upload_depth_buffer);
#ifndef OPENGL_ES2
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT, display->upload_depth_buffer);
#endif
gst_gl_display_check_framebuffer_status ();
if (glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) !=
GL_FRAMEBUFFER_COMPLETE_EXT)
gst_gl_display_set_error (display, "GL framebuffer status incomplete");
//unbind the FBO
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
glDeleteTextures (1, &fake_texture);
//alloc texture (related to upload) memory only on time
gst_gl_display_thread_do_upload_make (display);
} else {
//turn off the pipeline because Frame buffer object is a not present
gst_gl_display_set_error (display,
"Context, EXT_framebuffer_object supported: no");
}
}
/* called by gst_gl_display_thread_do_upload (in the gl thread) */
void
gst_gl_display_thread_do_upload_make (GstGLDisplay * display)
{
gint width = display->upload_data_width;
gint height = display->upload_data_height;
glGenTextures (1, &display->upload_intex);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex);
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA,
width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
break;
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB,
width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
break;
case GST_VIDEO_FORMAT_AYUV:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA,
width, height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, NULL);
break;
case GST_VIDEO_FORMAT_YUY2:
switch (display->upload_colorspace_conversion) {
case GST_GL_DISPLAY_CONVERSION_GLSL:
case GST_GL_DISPLAY_CONVERSION_MATRIX:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_LUMINANCE_ALPHA,
width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, NULL);
glGenTextures (1, &display->upload_intex_u);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_u);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
width, height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
break;
case GST_GL_DISPLAY_CONVERSION_MESA:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_YCBCR_MESA, width,
height, 0, GL_YCBCR_MESA, GL_UNSIGNED_SHORT_8_8_MESA, NULL);
break;
default:
gst_gl_display_set_error (display, "Unknow colorspace conversion %d",
display->upload_colorspace_conversion);
}
break;
case GST_VIDEO_FORMAT_UYVY:
switch (display->upload_colorspace_conversion) {
case GST_GL_DISPLAY_CONVERSION_GLSL:
case GST_GL_DISPLAY_CONVERSION_MATRIX:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_LUMINANCE_ALPHA,
width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, NULL);
glGenTextures (1, &display->upload_intex_u);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_u);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
width, height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
break;
case GST_GL_DISPLAY_CONVERSION_MESA:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_YCBCR_MESA, width,
height, 0, GL_YCBCR_MESA, GL_UNSIGNED_SHORT_8_8_MESA, NULL);
break;
default:
gst_gl_display_set_error (display, "Unknow colorspace conversion %d",
display->upload_colorspace_conversion);
}
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_LUMINANCE,
width, height, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, NULL);
glGenTextures (1, &display->upload_intex_u);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_u);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_LUMINANCE,
GST_ROUND_UP_2 (width) / 2,
GST_ROUND_UP_2 (height) / 2, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, NULL);
glGenTextures (1, &display->upload_intex_v);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_v);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_LUMINANCE,
GST_ROUND_UP_2 (width) / 2,
GST_ROUND_UP_2 (height) / 2, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, NULL);
break;
default:
gst_gl_display_set_error (display, "Unsupported upload video format %d",
display->upload_video_format);
}
}
/* called by gst_gl_display_thread_do_upload (in the gl thread) */
void
gst_gl_display_thread_do_upload_fill (GstGLDisplay * display)
{
GstVideoInfo vinfo;
gint width, height;
gpointer data;
width = display->upload_data_width;
height = display->upload_data_height;
data = display->upload_data;
gst_video_info_set_format (&vinfo, display->upload_video_format, width,
height);
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
//color space conversion is not needed
if (display->upload_width != display->upload_data_width ||
display->upload_height != display->upload_data_height)
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex);
else
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_outtex);
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_AYUV:
switch (display->upload_colorspace_conversion) {
case GST_GL_DISPLAY_CONVERSION_GLSL:
case GST_GL_DISPLAY_CONVERSION_MATRIX:
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex);
break;
case GST_GL_DISPLAY_CONVERSION_MESA:
if (display->upload_width != display->upload_data_width ||
display->upload_height != display->upload_data_height)
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex);
else
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_outtex);
break;
default:
gst_gl_display_set_error (display, "Unknow colorspace conversion %d",
display->upload_colorspace_conversion);
}
break;
default:
gst_gl_display_set_error (display, "Unsupported upload video format %d",
display->upload_video_format);
}
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_RGB:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_RGB, GL_UNSIGNED_BYTE, data);
break;
case GST_VIDEO_FORMAT_BGR:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_BGR, GL_UNSIGNED_BYTE, data);
break;
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_RGBA:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_RGBA, GL_UNSIGNED_BYTE, data);
break;
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_BGRA:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_BGRA, GL_UNSIGNED_BYTE, data);
break;
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_ARGB:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, data);
break;
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_ABGR:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, data);
break;
case GST_VIDEO_FORMAT_YUY2:
switch (display->upload_colorspace_conversion) {
case GST_GL_DISPLAY_CONVERSION_GLSL:
case GST_GL_DISPLAY_CONVERSION_MATRIX:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, data);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_u);
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0,
GST_ROUND_UP_2 (width) / 2, height,
GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, data);
break;
case GST_GL_DISPLAY_CONVERSION_MESA:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_YCBCR_MESA, GL_UNSIGNED_SHORT_8_8_REV_MESA, data);
break;
default:
gst_gl_display_set_error (display, "Unknow colorspace conversion %d",
display->upload_colorspace_conversion);
}
break;
case GST_VIDEO_FORMAT_UYVY:
switch (display->upload_colorspace_conversion) {
case GST_GL_DISPLAY_CONVERSION_GLSL:
case GST_GL_DISPLAY_CONVERSION_MATRIX:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, data);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_u);
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0,
GST_ROUND_UP_2 (width) / 2, height,
GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, data);
break;
case GST_GL_DISPLAY_CONVERSION_MESA:
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_YCBCR_MESA, GL_UNSIGNED_SHORT_8_8_MESA, data);
break;
default:
gst_gl_display_set_error (display, "Unknow colorspace conversion %d",
display->upload_colorspace_conversion);
}
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
{
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height,
GL_LUMINANCE, GL_UNSIGNED_BYTE, data);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_u);
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0,
GST_ROUND_UP_2 (width) / 2, GST_ROUND_UP_2 (height) / 2,
GL_LUMINANCE, GL_UNSIGNED_BYTE,
(guint8 *) data + GST_VIDEO_INFO_COMP_OFFSET (&vinfo, 2));
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_v);
glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0,
GST_ROUND_UP_2 (width) / 2, GST_ROUND_UP_2 (height) / 2,
GL_LUMINANCE, GL_UNSIGNED_BYTE,
(guint8 *) data + GST_VIDEO_INFO_COMP_OFFSET (&vinfo, 2));
}
break;
default:
gst_gl_display_set_error (display, "Unsupported upload video format %d",
display->upload_video_format);
}
//make sure no texture is in use in our opengl context
//in case we want to use the upload texture in an other opengl context
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, 0);
}
/* called by gst_gl_display_thread_do_upload (in the gl thread) */
void
gst_gl_display_thread_do_upload_draw (GstGLDisplay * display)
{
#ifdef OPENGL_ES2
GLint viewport_dim[4];
const GLfloat vVertices[] = { 1.0f, -1.0f, 0.0f,
1.0f, 0.0f,
-1.0f, -1.0f, 0.0f,
0.0f, .0f,
-1.0f, 1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f, 0.0f,
1.0f, 1.0f
};
GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
#endif
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, display->upload_fbo);
//setup a texture to render to
#ifndef OPENGL_ES2
glEnable (GL_TEXTURE_RECTANGLE_ARB);
#endif
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_outtex);
//attach the texture to the FBO to renderer to
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_RECTANGLE_ARB, display->upload_outtex, 0);
if (GLEW_ARB_fragment_shader)
gst_gl_shader_use (NULL);
#ifndef OPENGL_ES2
glPushAttrib (GL_VIEWPORT_BIT);
glMatrixMode (GL_PROJECTION);
glPushMatrix ();
glLoadIdentity ();
gluOrtho2D (0.0, display->upload_width, 0.0, display->upload_height);
glMatrixMode (GL_MODELVIEW);
glPushMatrix ();
glLoadIdentity ();
#else // OPENGL_ES2
glGetIntegerv (GL_VIEWPORT, viewport_dim);
#endif
glViewport (0, 0, display->upload_width, display->upload_height);
#ifndef OPENGL_ES2
glDrawBuffer (GL_COLOR_ATTACHMENT0_EXT);
#endif
glClearColor (0.0, 0.0, 0.0, 0.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
{
#ifndef OPENGL_ES2
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
#else
glVertexAttribPointer (display->shader_upload_attr_position_loc, 3,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
glVertexAttribPointer (display->shader_upload_attr_texture_loc, 2,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
glEnableVertexAttribArray (display->shader_upload_attr_position_loc);
glEnableVertexAttribArray (display->shader_upload_attr_texture_loc);
#endif
#ifndef OPENGL_ES2
glEnable (GL_TEXTURE_RECTANGLE_ARB);
#endif
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
#ifndef OPENGL_ES2
glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
#endif
}
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
{
switch (display->upload_colorspace_conversion) {
case GST_GL_DISPLAY_CONVERSION_GLSL:
case GST_GL_DISPLAY_CONVERSION_MATRIX:
{
GstGLShader *shader_upload_YUY2_UYVY = NULL;
switch (display->upload_video_format) {
case GST_VIDEO_FORMAT_YUY2:
shader_upload_YUY2_UYVY = display->shader_upload_YUY2;
break;
case GST_VIDEO_FORMAT_UYVY:
shader_upload_YUY2_UYVY = display->shader_upload_UYVY;
break;
default:
gst_gl_display_set_error (display,
"Upload video format inconsistency %d",
display->upload_video_format);
}
gst_gl_shader_use (shader_upload_YUY2_UYVY);
#ifndef OPENGL_ES2
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
#else
glVertexAttribPointer (display->shader_upload_attr_position_loc, 3,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
glVertexAttribPointer (display->shader_upload_attr_texture_loc, 2,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
glEnableVertexAttribArray (display->shader_upload_attr_position_loc);
glEnableVertexAttribArray (display->shader_upload_attr_texture_loc);
#endif
glActiveTextureARB (GL_TEXTURE1_ARB);
gst_gl_shader_set_uniform_1i (shader_upload_YUY2_UYVY, "UVtex", 1);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_u);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
glActiveTextureARB (GL_TEXTURE0_ARB);
gst_gl_shader_set_uniform_1i (shader_upload_YUY2_UYVY, "Ytex", 0);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
}
break;
case GST_GL_DISPLAY_CONVERSION_MESA:
{
#ifndef OPENGL_ES2
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
glEnable (GL_TEXTURE_RECTANGLE_ARB);
#endif
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
#ifndef OPENGL_ES2
glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
#endif
}
break;
default:
gst_gl_display_set_error (display, "Unknow colorspace conversion %d",
display->upload_colorspace_conversion);
}
}
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
{
gst_gl_shader_use (display->shader_upload_I420_YV12);
#ifndef OPENGL_ES2
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
#else
glVertexAttribPointer (display->shader_upload_attr_position_loc, 3,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
glVertexAttribPointer (display->shader_upload_attr_texture_loc, 2,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
glEnableVertexAttribArray (display->shader_upload_attr_position_loc);
glEnableVertexAttribArray (display->shader_upload_attr_texture_loc);
#endif
glActiveTextureARB (GL_TEXTURE1_ARB);
gst_gl_shader_set_uniform_1i (display->shader_upload_I420_YV12, "Utex",
1);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_u);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
glActiveTextureARB (GL_TEXTURE2_ARB);
gst_gl_shader_set_uniform_1i (display->shader_upload_I420_YV12, "Vtex",
2);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex_v);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
glActiveTextureARB (GL_TEXTURE0_ARB);
gst_gl_shader_set_uniform_1i (display->shader_upload_I420_YV12, "Ytex",
0);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
}
break;
case GST_VIDEO_FORMAT_AYUV:
{
gst_gl_shader_use (display->shader_upload_AYUV);
#ifndef OPENGL_ES2
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
#else
glVertexAttribPointer (display->shader_upload_attr_position_loc, 3,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
glVertexAttribPointer (display->shader_upload_attr_texture_loc, 2,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
glEnableVertexAttribArray (display->shader_upload_attr_position_loc);
glEnableVertexAttribArray (display->shader_upload_attr_texture_loc);
#endif
glActiveTextureARB (GL_TEXTURE0_ARB);
gst_gl_shader_set_uniform_1i (display->shader_upload_AYUV, "tex", 0);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->upload_intex);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
}
break;
default:
gst_gl_display_set_error (display, "Unsupported upload video format %d",
display->upload_video_format);
} //end switch display->currentVideo_format
#ifndef OPENGL_ES2
glBegin (GL_QUADS);
glTexCoord2i (display->upload_data_width, 0);
glVertex2f (1.0f, -1.0f);
glTexCoord2i (0, 0);
glVertex2f (-1.0f, -1.0f);
glTexCoord2i (0, display->upload_data_height);
glVertex2f (-1.0f, 1.0f);
glTexCoord2i (display->upload_data_width, display->upload_data_height);
glVertex2f (1.0f, 1.0f);
glEnd ();
glDrawBuffer (GL_NONE);
#else //OPENGL_ES2
glDrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
#endif
//we are done with the shader
if (display->upload_colorspace_conversion == GST_GL_DISPLAY_CONVERSION_GLSL)
glUseProgramObjectARB (0);
#ifndef OPENGL_ES2
glDisable (GL_TEXTURE_RECTANGLE_ARB);
glMatrixMode (GL_PROJECTION);
glPopMatrix ();
glMatrixMode (GL_MODELVIEW);
glPopMatrix ();
glPopAttrib ();
#else
glViewport (viewport_dim[0], viewport_dim[1], viewport_dim[2],
viewport_dim[3]);
#endif
gst_gl_display_check_framebuffer_status ();
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
}
/* called by gst_gl_display_thread_do_download (in the gl thread) */
void
gst_gl_display_thread_do_download_draw_rgb (GstGLDisplay * display)
{
GstVideoFormat video_format = display->download_video_format;
gpointer data = display->download_data;
#ifndef OPENGL_ES2
if (display->upload_colorspace_conversion == GST_GL_DISPLAY_CONVERSION_GLSL)
glUseProgramObjectARB (0);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->ouput_texture);
#else
gint width = display->ouput_texture_width;
gint height = display->ouput_texture_height;
const GLfloat vVertices[] = { 1.0f, -1.0f, 0.0f,
1.0f, 0.0f,
-1.0f, -1.0f, 0.0f,
0.0f, 0.0f,
-1.0f, 1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f, 0.0f,
1.0f, 1.0f
};
GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
glViewport (0, 0, width, height);
glClearColor (0.0, 0.0, 0.0, 0.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gst_gl_shader_use (display->shader_download_RGB);
glVertexAttribPointer (display->shader_download_attr_position_loc, 3,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
glVertexAttribPointer (display->shader_download_attr_texture_loc, 2,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
glEnableVertexAttribArray (display->shader_download_attr_position_loc);
glEnableVertexAttribArray (display->shader_download_attr_texture_loc);
glActiveTextureARB (GL_TEXTURE0_ARB);
gst_gl_shader_set_uniform_1i (display->shader_download_RGB, "s_texture", 0);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->ouput_texture);
glDrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
glUseProgramObjectARB (0);
#endif
switch (video_format) {
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_ARGB:
#ifndef OPENGL_ES2
glGetTexImage (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA,
GL_UNSIGNED_BYTE, data);
#else
glReadPixels (0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data);
#endif
break;
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_ABGR:
#ifndef OPENGL_ES2
glGetTexImage (GL_TEXTURE_RECTANGLE_ARB, 0, GL_BGRA,
GL_UNSIGNED_BYTE, data);
#endif
break;
case GST_VIDEO_FORMAT_RGB:
#ifndef OPENGL_ES2
glGetTexImage (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB,
GL_UNSIGNED_BYTE, data);
#else
glReadPixels (0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, data);
#endif
break;
case GST_VIDEO_FORMAT_BGR:
#ifndef OPENGL_ES2
glGetTexImage (GL_TEXTURE_RECTANGLE_ARB, 0, GL_BGR,
GL_UNSIGNED_BYTE, data);
#endif
break;
default:
gst_gl_display_set_error (display,
"Download video format inconsistency %d", video_format);
}
#ifndef OPENGL_ES2
glReadBuffer (GL_NONE);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
#endif
}
/* called by gst_gl_display_thread_do_download (in the gl thread) */
void
gst_gl_display_thread_do_download_draw_yuv (GstGLDisplay * display)
{
gint width, height;
GstVideoFormat video_format;
GstVideoInfo vinfo;
gpointer data;
width = display->download_width;
height = display->download_height;
video_format = display->download_video_format;
data = display->download_data;
gst_video_info_set_format (&vinfo, video_format, width, height);
#ifdef OPENGL_ES2
GLint viewport_dim[4];
const GLfloat vVertices[] = { 1.0f, -1.0f, 0.0f,
1.0f, 0.0f,
-1.0f, -1.0f, 0.0f,
0.0f, .0f,
-1.0f, 1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f, 0.0f,
1.0f, 1.0f
};
GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
#endif
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, display->download_fbo);
#ifndef OPENGL_ES2
glPushAttrib (GL_VIEWPORT_BIT);
glMatrixMode (GL_PROJECTION);
glPushMatrix ();
glLoadIdentity ();
gluOrtho2D (0.0, width, 0.0, height);
glMatrixMode (GL_MODELVIEW);
glPushMatrix ();
glLoadIdentity ();
#else // OPENGL_ES2
glGetIntegerv (GL_VIEWPORT, viewport_dim);
#endif
glViewport (0, 0, width, height);
switch (video_format) {
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
{
GstGLShader *shader_download_YUY2_UYVY = NULL;
switch (video_format) {
case GST_VIDEO_FORMAT_YUY2:
shader_download_YUY2_UYVY = display->shader_download_YUY2;
break;
case GST_VIDEO_FORMAT_UYVY:
shader_download_YUY2_UYVY = display->shader_download_UYVY;
break;
default:
gst_gl_display_set_error (display,
"Download video format inconsistensy %d", video_format);
}
#ifndef OPENGL_ES2
glDrawBuffer (GL_COLOR_ATTACHMENT0_EXT);
#endif
glClearColor (0.0, 0.0, 0.0, 0.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gst_gl_shader_use (shader_download_YUY2_UYVY);
#ifndef OPENGL_ES2
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
#else
glVertexAttribPointer (display->shader_download_attr_position_loc, 3,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
glVertexAttribPointer (display->shader_download_attr_texture_loc, 2,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
glEnableVertexAttribArray (display->shader_download_attr_position_loc);
glEnableVertexAttribArray (display->shader_download_attr_texture_loc);
#endif
glActiveTextureARB (GL_TEXTURE0_ARB);
gst_gl_shader_set_uniform_1i (shader_download_YUY2_UYVY, "tex", 0);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->ouput_texture);
}
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
{
#ifndef OPENGL_ES2
glDrawBuffers (3, display->multipleRT);
#endif
glClearColor (0.0, 0.0, 0.0, 0.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gst_gl_shader_use (display->shader_download_I420_YV12);
#ifndef OPENGL_ES2
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
#endif
glActiveTextureARB (GL_TEXTURE0_ARB);
gst_gl_shader_set_uniform_1i (display->shader_download_I420_YV12, "tex",
0);
gst_gl_shader_set_uniform_1f (display->shader_download_I420_YV12, "w",
(gfloat) display->ouput_texture_width);
gst_gl_shader_set_uniform_1f (display->shader_download_I420_YV12, "h",
(gfloat) display->ouput_texture_height);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->ouput_texture);
}
break;
case GST_VIDEO_FORMAT_AYUV:
{
#ifndef OPENGL_ES2
glDrawBuffer (GL_COLOR_ATTACHMENT0_EXT);
#endif
glClearColor (0.0, 0.0, 0.0, 0.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gst_gl_shader_use (display->shader_download_AYUV);
#ifndef OPENGL_ES2
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
#else
glVertexAttribPointer (display->shader_download_attr_position_loc, 3,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
glVertexAttribPointer (display->shader_download_attr_texture_loc, 2,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
glEnableVertexAttribArray (display->shader_download_attr_position_loc);
glEnableVertexAttribArray (display->shader_download_attr_texture_loc);
#endif
glActiveTextureARB (GL_TEXTURE0_ARB);
gst_gl_shader_set_uniform_1i (display->shader_download_AYUV, "tex", 0);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, display->ouput_texture);
}
break;
default:
gst_gl_display_set_error (display,
"Download video format inconsistensy %d", video_format);
} //end switch display->currentVideo_format
#ifndef OPENGL_ES2
glBegin (GL_QUADS);
glTexCoord2i (0, 0);
glVertex2f (-1.0f, -1.0f);
glTexCoord2i (width, 0);
glVertex2f (1.0f, -1.0f);
glTexCoord2i (width, height);
glVertex2f (1.0f, 1.0f);
glTexCoord2i (0, height);
glVertex2f (-1.0f, 1.0f);
glEnd ();
glDrawBuffer (GL_NONE);
#else //OPENGL_ES2
glDrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
#endif
//dot not check if GLSL is available
//because download yuv is not available
//without GLSL (whereas rgb is)
glUseProgramObjectARB (0);
#ifndef OPENGL_ES2
glDisable (GL_TEXTURE_RECTANGLE_ARB);
glMatrixMode (GL_PROJECTION);
glPopMatrix ();
glMatrixMode (GL_MODELVIEW);
glPopMatrix ();
glPopAttrib ();
#else
glViewport (viewport_dim[0], viewport_dim[1], viewport_dim[2],
viewport_dim[3]);
#endif
gst_gl_display_check_framebuffer_status ();
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, display->download_fbo);
#ifndef OPENGL_ES2
glReadBuffer (GL_COLOR_ATTACHMENT0_EXT);
#endif
switch (video_format) {
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_xRGB:
glReadPixels (0, 0, width, height, GL_BGRA,
GL_UNSIGNED_INT_8_8_8_8, data);
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
glReadPixels (0, 0, GST_ROUND_UP_2 (width) / 2, height, GL_BGRA,
GL_UNSIGNED_INT_8_8_8_8_REV, data);
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
{
glReadPixels (0, 0, width, height, GL_LUMINANCE, GL_UNSIGNED_BYTE, data);
#ifndef OPENGL_ES2
glReadBuffer (GL_COLOR_ATTACHMENT1_EXT);
#endif
glReadPixels (0, 0, GST_ROUND_UP_2 (width) / 2,
GST_ROUND_UP_2 (height) / 2, GL_LUMINANCE, GL_UNSIGNED_BYTE,
(guint8 *) data + GST_VIDEO_INFO_COMP_OFFSET (&vinfo, 1));
#ifndef OPENGL_ES2
glReadBuffer (GL_COLOR_ATTACHMENT2_EXT);
#endif
glReadPixels (0, 0, GST_ROUND_UP_2 (width) / 2,
GST_ROUND_UP_2 (height) / 2, GL_LUMINANCE, GL_UNSIGNED_BYTE,
(guint8 *) data + GST_VIDEO_INFO_COMP_OFFSET (&vinfo, 2));
}
break;
default:
gst_gl_display_set_error (display,
"Download video format inconsistensy %d", video_format);
}
#ifndef OPENGL_ES2
glReadBuffer (GL_NONE);
#endif
gst_gl_display_check_framebuffer_status ();
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
}
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