previewWidget.cpp File Reference

#include <limits.h>
#include <stdio.h>
#include <QMessageBox>
#include <QOpenGLFunctions_3_3_Core>
#include <QOpenGLVersionFunctionsFactory>
#include "previewWidget.hpp"
#include "debug.hpp"

Include dependency graph for previewWidget.cpp:

Go to the source code of this file.

Functions
static void	compileShader (GLuint shaderId, QOpenGLFunctions_3_3_Core *f)
static const char *	get_temp_dir (void)
static QOpenGLFunctions_3_3_Core *	getOpenGLFuncs ()

Variables
static const char *	frag_src
static unsigned char	pixels []
static const GLfloat	rectangle []
static const char *	vert_src

Function Documentation

compileShader()

static void compileShader ( GLuint shaderId, QOpenGLFunctions_3_3_Core * f )

static

Definition at line 50 of file previewWidget.cpp.

                                                                        {
        f->glCompileShader(shaderId);
 
        GLint ret = GL_FALSE;
        int len;
 
        f->glGetShaderiv(shaderId, GL_COMPILE_STATUS, &ret);
        f->glGetShaderiv(shaderId, GL_INFO_LOG_LENGTH, &len);
        if (len > 0){
                std::vector<char> errorMsg(len+1);
                f->glGetShaderInfoLog(shaderId, len, NULL, &errorMsg[0]);
                printf("%s\n", errorMsg.data());
        }
}

References len.

Referenced by GlProgram::GlProgram(), and PreviewWidget::initializeGL().

get_temp_dir()

static const char * get_temp_dir ( void )

static

Definition at line 265 of file previewWidget.cpp.

{
#ifdef _WIN32
        static __thread char temp_dir[MAX_PATH + 1];
        if (GetTempPathA(sizeof temp_dir, temp_dir) == 0) {
                return NULL;
        }
#else
        static __thread char temp_dir[PATH_MAX];
        if (char *req_tmp_dir = getenv("TMPDIR")) {
                temp_dir[sizeof temp_dir - 1] = '\0';
                strncpy(temp_dir, req_tmp_dir, sizeof temp_dir - 1);
        } else {
                strcpy(temp_dir, P_tmpdir);
        }
        strncat(temp_dir, "/", sizeof temp_dir - strlen(temp_dir) - 1);
#endif
 
        return temp_dir;
}

Referenced by display_unix_sock_init(), gen_sdp(), init(), print_backtrace(), PreviewWidget::setKey(), show_help(), and show_help().

getOpenGLFuncs()

static QOpenGLFunctions_3_3_Core * getOpenGLFuncs ( )

static

Definition at line 73 of file previewWidget.cpp.

                                                  {
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
        return QOpenGLContext::currentContext()->versionFunctions<QOpenGLFunctions_3_3_Core>();
#else
        return QOpenGLVersionFunctionsFactory::get<QOpenGLFunctions_3_3_Core>(QOpenGLContext::currentContext());
#endif
}

Referenced by PreviewWidget::~PreviewWidget(), PreviewWidget::initializeGL(), PreviewWidget::loadFrame(), and PreviewWidget::render().

Variable Documentation

frag_src

const char* frag_src

static

Initial value:

= R"END(
#version 330 core
in vec2 UV;
out vec4 color;
uniform sampler2D tex;
void main(){
        color = vec4(texture(tex, UV).rgb, 1.0f);
}
)END"

Definition at line 40 of file previewWidget.cpp.

Referenced by GlProgram::GlProgram(), FlatVideoScene::init(), and PreviewWidget::initializeGL().

pixels

unsigned char pixels[]

static

Initial value:

= {
        255, 0, 0,   0, 255, 0,   0, 0, 255,   255, 255, 255,
        255, 0, 0,   0, 255, 0,   0, 0, 255,   255, 255, 255,
        255, 0, 0,   0, 255, 0,   0, 0, 255,   255, 255, 255,
        255, 0, 0,   0, 255, 0,   0, 0, 255,   255, 255, 255
}

Definition at line 66 of file previewWidget.cpp.

                                {
        255, 0, 0,   0, 255, 0,   0, 0, 255,   255, 255, 255,
        255, 0, 0,   0, 255, 0,   0, 0, 255,   255, 255, 255,
        255, 0, 0,   0, 255, 0,   0, 0, 255,   255, 255, 255,
        255, 0, 0,   0, 255, 0,   0, 0, 255,   255, 255, 255
};

Referenced by Texture::allocate(), PreviewWidget::initializeGL(), and vidcap_screen_osx_grab().

rectangle

const GLfloat rectangle[]

static

Initial value:

= {
         1.0f,  1.0f,  1.0f,  0.0f,
        -1.0f,  1.0f,  0.0f,  0.0f,
        -1.0f, -1.0f,  0.0f,  1.0f,
 
         1.0f,  1.0f,  1.0f,  0.0f,
        -1.0f, -1.0f,  0.0f,  1.0f,
         1.0f, -1.0f,  1.0f,  1.0f
}

Definition at line 15 of file previewWidget.cpp.

                                   {
         1.0f,  1.0f,  1.0f,  0.0f,
        -1.0f,  1.0f,  0.0f,  0.0f,
        -1.0f, -1.0f,  0.0f,  1.0f,
 
         1.0f,  1.0f,  1.0f,  0.0f,
        -1.0f, -1.0f,  0.0f,  1.0f,
         1.0f, -1.0f,  1.0f,  1.0f
};

Referenced by Model::get_quad(), and PreviewWidget::initializeGL().

vert_src

const char* vert_src

static

Initial value:

= R"END(
#version 330 core
layout(location = 0) in vec2 vert_pos;
layout(location = 1) in vec2 vert_uv;
 
out vec2 UV;
 
uniform vec2 scale_vec;
 
void main(){
        gl_Position = vec4(vert_pos * scale_vec, 0.0f, 1.0f);
        UV = vert_uv;
}
)END"

Definition at line 25 of file previewWidget.cpp.

Referenced by GlProgram::GlProgram(), FlatVideoScene::init(), and PreviewWidget::initializeGL().