mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
Also since the version scheme has changed (to include the micro number) since 10.10, use the MAC_OS_X_VERSION_* macro to avoid confusion.
329 lines
10 KiB
Objective-C
329 lines
10 KiB
Objective-C
/*
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* GStreamer
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* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <Cocoa/Cocoa.h>
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#include "gstglcontext_cocoa.h"
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#include "gstgl_cocoa_private.h"
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static gboolean gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
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GstGLContext * other_context, GError **error);
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static void gst_gl_context_cocoa_destroy_context (GstGLContext *context);
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static guintptr gst_gl_context_cocoa_get_gl_context (GstGLContext * window);
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static gboolean gst_gl_context_cocoa_activate (GstGLContext * context, gboolean activate);
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static GstGLAPI gst_gl_context_cocoa_get_gl_api (GstGLContext * context);
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static GstGLPlatform gst_gl_context_cocoa_get_gl_platform (GstGLContext * context);
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#define GST_GL_CONTEXT_COCOA_GET_PRIVATE(o) \
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(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_CONTEXT_COCOA, GstGLContextCocoaPrivate))
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GST_DEBUG_CATEGORY_STATIC (gst_gl_context_cocoa_debug);
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#define GST_CAT_DEFAULT gst_gl_context_cocoa_debug
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G_DEFINE_TYPE_WITH_CODE (GstGLContextCocoa, gst_gl_context_cocoa,
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GST_GL_TYPE_CONTEXT, GST_DEBUG_CATEGORY_INIT (gst_gl_context_cocoa_debug, "glcontext_cocoa", 0, "Cocoa GL Context"); );
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static void
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gst_gl_context_cocoa_class_init (GstGLContextCocoaClass * klass)
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{
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GstGLContextClass *context_class = (GstGLContextClass *) klass;
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g_type_class_add_private (klass, sizeof (GstGLContextCocoaPrivate));
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context_class->destroy_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_destroy_context);
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context_class->create_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_create_context);
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context_class->get_gl_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_get_gl_context);
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context_class->activate = GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_activate);
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context_class->get_gl_api =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_get_gl_api);
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context_class->get_gl_platform =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_get_gl_platform);
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}
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static void
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gst_gl_context_cocoa_init (GstGLContextCocoa * context)
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{
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context->priv = GST_GL_CONTEXT_COCOA_GET_PRIVATE (context);
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}
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/* Must be called in the gl thread */
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GstGLContextCocoa *
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gst_gl_context_cocoa_new (GstGLDisplay * display)
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{
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if ((gst_gl_display_get_handle_type (display) & GST_GL_DISPLAY_TYPE_COCOA) == 0)
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/* we require an cocoa display to create CGL contexts */
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return NULL;
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return g_object_new (GST_GL_TYPE_CONTEXT_COCOA, NULL);
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}
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struct pixel_attr
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{
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CGLPixelFormatAttribute attr;
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const gchar *attr_name;
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};
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static struct pixel_attr pixel_attrs[] = {
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{kCGLPFAAllRenderers, "All Renderers"},
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{kCGLPFADoubleBuffer, "Double Buffered"},
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{kCGLPFAAuxBuffers, "Aux Buffers"},
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{kCGLPFAColorSize, "Color Size"},
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{kCGLPFAAlphaSize, "Alpha Size"},
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{kCGLPFADepthSize, "Depth Size"},
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{kCGLPFAStencilSize, "Stencil Size"},
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{kCGLPFAAccumSize, "Accum Size"},
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{kCGLPFAMinimumPolicy, "Minimum Policy"},
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{kCGLPFAMaximumPolicy, "Maximum Policy"},
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{kCGLPFASampleBuffers, "Sample Buffers"},
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{kCGLPFASamples, "Samples"},
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{kCGLPFAAuxDepthStencil, "Aux Depth Stencil"},
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{kCGLPFAColorFloat, "Color Float"},
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{kCGLPFAMultisample, "Multisample"},
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{kCGLPFASupersample, "Supersample"},
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{kCGLPFARendererID, "Renderer ID"},
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{kCGLPFANoRecovery, "No Recovery"},
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{kCGLPFAAccelerated, "Accelerated"},
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{kCGLPFAClosestPolicy, "Closest Policy"},
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{kCGLPFABackingStore, "Backing Store"},
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{kCGLPFADisplayMask, "Display Mask"},
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{kCGLPFAAllowOfflineRenderers, "Allow Offline Renderers"},
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{kCGLPFAAcceleratedCompute, "Accelerated Compute"},
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{kCGLPFAOpenGLProfile, "OpenGL Profile"},
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{kCGLPFAVirtualScreenCount, "Virtual Screen Count"},
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#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_11
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{kCGLPFAStereo, "Stereo"},
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_9
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{kCGLPFACompliant, "Compliant"},
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{kCGLPFARemotePBuffer, "Remote PBuffer"},
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{kCGLPFASingleRenderer, "Single Renderer"},
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{kCGLPFAWindow, "Window"},
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
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// {kCGLPFAOffScreen, "Off Screen"},
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// {kCGLPFAPBuffer, "PBuffer"},
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_6
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// {kCGLPFAFullScreen, "Full Screen"},
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5
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// {kCGLPFAMPSafe, "MP Safe"},
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// {kCGLPFAMultiScreen, "Multi Screen"},
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// {kCGLPFARobust, "Robust"},
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#endif
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};
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void
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gst_gl_context_cocoa_dump_pixel_format (CGLPixelFormatObj fmt)
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{
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int i;
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for (i = 0; i < G_N_ELEMENTS (pixel_attrs); i++) {
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gint val;
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CGLError ret = CGLDescribePixelFormat (fmt, 0, pixel_attrs[i].attr, &val);
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if (ret != kCGLNoError) {
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GST_WARNING ("failed to get pixel format %p attribute %s", fmt, pixel_attrs[i].attr_name);
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} else {
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GST_DEBUG ("Pixel format %p attr %s = %i", fmt, pixel_attrs[i].attr_name,
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val);
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}
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}
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}
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CGLPixelFormatObj
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gst_gl_context_cocoa_get_pixel_format (GstGLContextCocoa *context)
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{
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return context->priv->pixel_format;
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}
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static gboolean
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gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
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GstGLContext *other_context, GError **error)
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{
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GstGLContextCocoa *context_cocoa = GST_GL_CONTEXT_COCOA (context);
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GstGLContextCocoaPrivate *priv = context_cocoa->priv;
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GstGLWindow *window = gst_gl_context_get_window (context);
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GstGLWindowCocoa *window_cocoa = GST_GL_WINDOW_COCOA (window);
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GstGLAPI context_api = GST_GL_API_NONE;
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const GLint swapInterval = 1;
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NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
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CGLPixelFormatObj fmt = NULL;
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CGLContextObj glContext;
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CGLPixelFormatAttribute attribs[] = {
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kCGLPFADoubleBuffer,
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kCGLPFAAccumSize, 32,
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0
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};
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CGLError ret;
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gint pix_fmt_i = 0;
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gint npix;
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if ((gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3)) == GST_GL_API_NONE) {
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g_set_error (error, GST_GL_CONTEXT_ERROR,
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GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
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"The CGL backend only supports GL and GL3");
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goto error;
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}
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priv->gl_context = nil;
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if (other_context)
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priv->external_gl_context = (CGLContextObj) gst_gl_context_get_gl_context (other_context);
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else
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priv->external_gl_context = NULL;
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if (priv->external_gl_context) {
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gint profile;
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fmt = CGLGetPixelFormat (priv->external_gl_context);
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#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
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/* core profile is only available in >= 10.7 */
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if (kCGLNoError == CGLDescribePixelFormat (fmt, 0, kCGLPFAOpenGLProfile,
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&profile)) {
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if (profile == kCGLOGLPVersion_3_2_Core) {
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context_api = GST_GL_API_OPENGL3;
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} else {
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context_api =GST_GL_API_OPENGL;
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}
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}
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#else
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context_api = GST_GL_API_OPENGL;
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#endif
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}
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if (!fmt) {
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#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
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if (gl_api & GST_GL_API_OPENGL3) {
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attribs[pix_fmt_i++] = kCGLPFAOpenGLProfile;
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attribs[pix_fmt_i++] = (int) kCGLOGLPVersion_3_2_Core;
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context_api = GST_GL_API_OPENGL3;
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} else {
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context_api = GST_GL_API_OPENGL;
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}
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#else
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context_api = GST_GL_API_OPENGL;
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#endif
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attribs[pix_fmt_i++] = 0;
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ret = CGLChoosePixelFormat (attribs, &fmt, &npix);
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if (ret != kCGLNoError) {
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g_set_error (error, GST_GL_CONTEXT_ERROR,
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GST_GL_CONTEXT_ERROR_WRONG_CONFIG, "cannot choose a pixel format: %s", CGLErrorString (ret));
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goto error;
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}
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}
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gst_gl_context_cocoa_dump_pixel_format (fmt);
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ret = CGLCreateContext (fmt, priv->external_gl_context, &glContext);
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if (ret != kCGLNoError) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
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"failed to create context: %s", CGLErrorString (ret));
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goto error;
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}
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context_cocoa->priv->pixel_format = fmt;
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context_cocoa->priv->gl_context = glContext;
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_invoke_on_main ((GstGLWindowCB) gst_gl_window_cocoa_create_window,
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window_cocoa);
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if (!context_cocoa->priv->gl_context) {
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goto error;
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}
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GST_INFO_OBJECT (context, "GL context created: %p", context_cocoa->priv->gl_context);
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CGLSetCurrentContext (context_cocoa->priv->gl_context);
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/* Back and front buffers are swapped only during the vertical retrace of the monitor.
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* Discarded if you configured your driver to Never-use-V-Sync.
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*/
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CGLSetParameter (context_cocoa->priv->gl_context, kCGLCPSwapInterval, &swapInterval);
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context_cocoa->priv->context_api = context_api;
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if (window)
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gst_object_unref (window);
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[pool release];
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return TRUE;
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error:
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{
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if (window)
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gst_object_unref (window);
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[pool release];
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return FALSE;
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}
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}
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static void
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gst_gl_context_cocoa_destroy_context (GstGLContext *context)
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{
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/* FIXME: Need to release context and other things? */
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}
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static guintptr
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gst_gl_context_cocoa_get_gl_context (GstGLContext * context)
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{
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return (guintptr) GST_GL_CONTEXT_COCOA (context)->priv->gl_context;
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}
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static gboolean
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gst_gl_context_cocoa_activate (GstGLContext * context, gboolean activate)
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{
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GstGLContextCocoa *context_cocoa = GST_GL_CONTEXT_COCOA (context);
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gpointer context_handle = activate ? context_cocoa->priv->gl_context : NULL;
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return kCGLNoError == CGLSetCurrentContext (context_handle);
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}
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static GstGLAPI
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gst_gl_context_cocoa_get_gl_api (GstGLContext * context)
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{
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GstGLContextCocoa *context_cocoa = GST_GL_CONTEXT_COCOA (context);
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if (context_cocoa->priv->gl_context)
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return context_cocoa->priv->context_api;
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return GST_GL_API_OPENGL | GST_GL_API_OPENGL3;
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}
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static GstGLPlatform
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gst_gl_context_cocoa_get_gl_platform (GstGLContext * context)
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{
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return GST_GL_PLATFORM_CGL;
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}
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guintptr
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gst_gl_context_cocoa_get_current_context (void)
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{
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return (guintptr) CGLGetCurrentContext ();
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}
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