gstreamer/gst-libs/gst/gl/gpuprocess/gstglcontext_gpu_process.c
Julien Isorce b377112ee3 gl: add GstGLContextGPUProcess backend
It builds its GL vtable from a proc address provided
by the application.
2015-05-27 17:22:40 +01:00

130 lines
3.8 KiB
C

/*
* GStreamer
* Copyright (C) 2015 Julien Isorce <j.isorce@samsung.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstglcontext_gpu_process.h"
#include "gstglwindow_gpu_process.h"
#define GST_GL_CONTEXT_GPU_PROCESS_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_CONTEXT_GPU_PROCESS, GstGLContextGPUProcessPrivate))
#define GST_CAT_DEFAULT gst_gl_context_debug
G_DEFINE_TYPE (GstGLContextGPUProcess, gst_gl_context_gpu_process,
GST_GL_TYPE_CONTEXT);
struct _GstGLContextGPUProcessPrivate
{
GstGLAPI gl_api;
};
static guintptr
gst_gl_context_gpu_process_get_gl_context (GstGLContext * context)
{
return 0;
}
static GstGLAPI
gst_gl_context_gpu_process_get_gl_api (GstGLContext * context)
{
return GST_GL_CONTEXT_GPU_PROCESS (context)->priv->gl_api;
}
static GstGLPlatform
gst_gl_context_gpu_process_get_gl_platform (GstGLContext * context)
{
return GST_GL_PLATFORM_GPU_PROCESS;
}
static gboolean
gst_gl_context_gpu_process_activate (GstGLContext * context, gboolean activate)
{
return TRUE;
}
static void
gst_gl_context_gpu_process_class_init (GstGLContextGPUProcessClass * klass)
{
GstGLContextClass *context_class = (GstGLContextClass *) klass;
g_type_class_add_private (klass, sizeof (GstGLContextGPUProcessPrivate));
context_class->get_gl_context =
GST_DEBUG_FUNCPTR (gst_gl_context_gpu_process_get_gl_context);
context_class->get_gl_api =
GST_DEBUG_FUNCPTR (gst_gl_context_gpu_process_get_gl_api);
context_class->get_gl_platform =
GST_DEBUG_FUNCPTR (gst_gl_context_gpu_process_get_gl_platform);
context_class->activate =
GST_DEBUG_FUNCPTR (gst_gl_context_gpu_process_activate);
}
static void
gst_gl_context_gpu_process_init (GstGLContextGPUProcess * context)
{
context->priv = GST_GL_CONTEXT_GPU_PROCESS_GET_PRIVATE (context);
}
GstGLContext *
gst_gl_context_gpu_process_new (GstGLDisplay * display,
GstGLAPI gl_api, GstGLProcAddrFunc proc_addr)
{
GstGLContext *context = NULL;
GstGLContextGPUProcess *gpu_context = NULL;
GstGLContextClass *context_class = NULL;
GstGLWindow *window = NULL;
GError *error = NULL;
g_return_val_if_fail ((gst_gl_display_get_gl_api (display) & gl_api) !=
GST_GL_API_NONE, NULL);
gpu_context = g_object_new (GST_GL_TYPE_CONTEXT_GPU_PROCESS, NULL);
gpu_context->priv->gl_api = gl_api;
context = GST_GL_CONTEXT (gpu_context);
gst_gl_context_set_display (context, display);
gst_gl_display_add_context (display, context);
context_class = GST_GL_CONTEXT_GET_CLASS (context);
context_class->get_current_context = NULL;
context_class->get_proc_address = GST_DEBUG_FUNCPTR (proc_addr);
gst_gl_context_activate (context, TRUE);
gst_gl_context_fill_info (context, &error);
if (error) {
GST_ERROR_OBJECT (context, "Failed to create gpu process context: %s",
error->message);
g_error_free (error);
gst_object_unref (context);
return NULL;
}
window = GST_GL_WINDOW (gst_gl_window_gpu_process_new (display));
gst_gl_context_set_window (context, window);
GST_GL_WINDOW_GET_CLASS (window)->open (context->window, NULL);
gst_object_unref (window);
return context;
}