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/*
* GStreamer
* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstglapi
* @title: GstGLAPI
* @short_description: OpenGL API specific functionality
* @see_also: #GstGLDisplay, #GstGLContext
*
* Provides some helper API for dealing with OpenGL API's and platforms
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstglapi.h"
/**
* GstGLFuncs:
*
* Structure containing function pointers to OpenGL functions.
*
* Each field is named exactly the same as the OpenGL function without the
* `gl` prefix.
*/
/**
* gst_gl_api_to_string:
* @api: a #GstGLAPI to stringify
*
* Returns: A space seperated string of the OpenGL api's enabled in @api
*/
gchar *
gst_gl_api_to_string (GstGLAPI api)
{
GString *str = NULL;
gchar *ret;
if (api == GST_GL_API_NONE) {
str = g_string_new ("none");
goto out;
} else if (api == GST_GL_API_ANY) {
str = g_string_new ("any");
goto out;
}
if (api & GST_GL_API_OPENGL) {
str = g_string_new (GST_GL_API_OPENGL_NAME);
}
if (api & GST_GL_API_OPENGL3) {
if (str) {
g_string_append (str, " " GST_GL_API_OPENGL3_NAME);
} else {
str = g_string_new (GST_GL_API_OPENGL3_NAME);
}
}
if (api & GST_GL_API_GLES1) {
if (str) {
g_string_append (str, " " GST_GL_API_GLES1_NAME);
} else {
str = g_string_new (GST_GL_API_GLES1_NAME);
}
}
if (api & GST_GL_API_GLES2) {
if (str) {
g_string_append (str, " " GST_GL_API_GLES2_NAME);
} else {
str = g_string_new (GST_GL_API_GLES2_NAME);
}
}
out:
if (!str)
str = g_string_new ("unknown");
ret = g_string_free (str, FALSE);
return ret;
}
/**
* gst_gl_api_from_string:
* @api_s: a space seperated string of OpenGL apis
*
* Returns: The #GstGLAPI represented by @api_s
*/
GstGLAPI
gst_gl_api_from_string (const gchar * apis_s)
{
GstGLAPI ret = GST_GL_API_NONE;
gchar *apis = (gchar *) apis_s;
if (!apis || apis[0] == '\0') {
ret = GST_GL_API_ANY;
} else {
while (apis) {
if (apis[0] == '\0') {
break;
} else if (apis[0] == ' ' || apis[0] == ',') {
apis = &apis[1];
} else if (g_strstr_len (apis, 7, GST_GL_API_OPENGL3_NAME)) {
ret |= GST_GL_API_OPENGL3;
apis = &apis[7];
} else if (g_strstr_len (apis, 6, GST_GL_API_OPENGL_NAME)) {
ret |= GST_GL_API_OPENGL;
apis = &apis[6];
} else if (g_strstr_len (apis, 5, GST_GL_API_GLES1_NAME)) {
ret |= GST_GL_API_GLES1;
apis = &apis[5];
} else if (g_strstr_len (apis, 5, GST_GL_API_GLES2_NAME)) {
ret |= GST_GL_API_GLES2;
apis = &apis[5];
} else {
GST_ERROR ("Error parsing \'%s\'", apis);
break;
}
}
}
return ret;
}
/**
* gst_gl_platform_to_string:
* @platform: a #GstGLPlatform to stringify
*
* Returns: A space seperated string of the OpenGL platforms enabled in @platform
*/
gchar *
gst_gl_platform_to_string (GstGLPlatform platform)
{
GString *str = NULL;
gchar *ret;
if (platform == GST_GL_PLATFORM_NONE) {
str = g_string_new ("none");
goto out;
} else if (platform == GST_GL_PLATFORM_ANY) {
str = g_string_new ("any");
goto out;
}
str = g_string_new ("");
if (platform & GST_GL_PLATFORM_GLX) {
str = g_string_append (str, "glx ");
}
if (platform & GST_GL_PLATFORM_EGL) {
str = g_string_append (str, "egl ");
}
if (platform & GST_GL_PLATFORM_WGL) {
str = g_string_append (str, "wgl ");
}
if (platform & GST_GL_PLATFORM_CGL) {
str = g_string_append (str, "cgl ");
}
out:
if (!str)
str = g_string_new ("unknown");
ret = g_string_free (str, FALSE);
return ret;
}
/**
* gst_gl_platform_from_string:
* @platform_s: a space seperated string of OpenGL platformss
*
* Returns: The #GstGLPlatform represented by @platform_s
*/
GstGLPlatform
gst_gl_platform_from_string (const gchar * platform_s)
{
GstGLPlatform ret = GST_GL_PLATFORM_NONE;
gchar *platform = (gchar *) platform_s;
if (!platform || platform[0] == '\0') {
ret = GST_GL_PLATFORM_ANY;
} else {
while (platform) {
if (platform[0] == '\0') {
break;
} else if (platform[0] == ' ' || platform[0] == ',') {
platform = &platform[1];
} else if (g_strstr_len (platform, 3, "glx")) {
ret |= GST_GL_PLATFORM_GLX;
platform = &platform[3];
} else if (g_strstr_len (platform, 3, "egl")) {
ret |= GST_GL_PLATFORM_EGL;
platform = &platform[3];
} else if (g_strstr_len (platform, 3, "wgl")) {
ret |= GST_GL_PLATFORM_WGL;
platform = &platform[3];
} else if (g_strstr_len (platform, 3, "cgl")) {
ret |= GST_GL_PLATFORM_CGL;
platform = &platform[3];
} else {
GST_ERROR ("Error parsing \'%s\'", platform);
break;
}
}
}
return ret;
}
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