gstreamer/gst-libs/gst/gl/viv-fb/gstglwindow_viv_fb_egl.c

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/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
* Copyright (C) 2015 Freescale Semiconductor <b55597@freescale.com>
* Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.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.
*/
#include "../gstgl_fwd.h"
#include <gst/gl/gstglcontext.h>
#include "gstglwindow_viv_fb_egl.h"
#include "../gstglwindow_private.h"
#define GST_CAT_DEFAULT gst_gl_window_debug
#define gst_gl_window_viv_fb_egl_parent_class parent_class
G_DEFINE_TYPE (GstGLWindowVivFBEGL, gst_gl_window_viv_fb_egl,
GST_TYPE_GL_WINDOW);
static guintptr gst_gl_window_viv_fb_egl_get_window_handle (GstGLWindow *
window);
static guintptr gst_gl_window_viv_fb_egl_get_display (GstGLWindow * window);
static void gst_gl_window_viv_fb_egl_set_window_handle (GstGLWindow * window,
guintptr handle);
static void gst_gl_window_viv_fb_egl_close (GstGLWindow * window);
static gboolean gst_gl_window_viv_fb_egl_open (GstGLWindow * window,
GError ** error);
static void gst_gl_window_viv_fb_egl_draw (GstGLWindow * window);
static gboolean
gst_gl_window_viv_fb_egl_set_render_rectangle (GstGLWindow * window,
gint x, gint y, gint width, gint height);
static void
gst_gl_window_viv_fb_egl_class_init (GstGLWindowVivFBEGLClass * klass)
{
GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
window_class->get_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_window_viv_fb_egl_get_window_handle);
window_class->get_display =
GST_DEBUG_FUNCPTR (gst_gl_window_viv_fb_egl_get_display);
window_class->set_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_window_viv_fb_egl_set_window_handle);
window_class->close = GST_DEBUG_FUNCPTR (gst_gl_window_viv_fb_egl_close);
window_class->open = GST_DEBUG_FUNCPTR (gst_gl_window_viv_fb_egl_open);
window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_window_viv_fb_egl_draw);
window_class->set_render_rectangle =
GST_DEBUG_FUNCPTR (gst_gl_window_viv_fb_egl_set_render_rectangle);
}
static void
gst_gl_window_viv_fb_egl_init (GstGLWindowVivFBEGL * window)
{
}
/* Must be called in the gl thread */
GstGLWindowVivFBEGL *
gst_gl_window_viv_fb_egl_new (GstGLDisplay * display)
{
GstGLWindowVivFBEGL *window;
if ((gst_gl_display_get_handle_type (display) & GST_GL_DISPLAY_TYPE_VIV_FB) ==
0)
/* we require a Vivante FB display to create windows */
return NULL;
window = g_object_new (GST_TYPE_GL_WINDOW_VIV_FB_EGL, NULL);
gst_object_ref_sink (window);
return window;
}
static void
gst_gl_window_viv_fb_egl_close (GstGLWindow * window)
{
GstGLWindowVivFBEGL *window_egl = GST_GL_WINDOW_VIV_FB_EGL (window);
if (window_egl->win_id && !window_egl->external_window) {
fbDestroyWindow (window_egl->win_id);
window_egl->win_id = 0;
}
GST_GL_WINDOW_CLASS (parent_class)->close (window);
}
static guintptr
gst_gl_window_viv_fb_egl_get_display (GstGLWindow * window)
{
return gst_gl_display_get_handle (window->display);
}
static gboolean
gst_gl_window_viv_fb_egl_open (GstGLWindow * window, GError ** error)
{
GstGLWindowVivFBEGL *window_egl = GST_GL_WINDOW_VIV_FB_EGL (window);
EGLNativeDisplayType display;
display = (EGLNativeDisplayType) gst_gl_window_get_display (window);
window_egl->win_id = fbCreateWindow (display, -1, -1, 0, 0);
window_egl->external_window = FALSE;
if (!window_egl->win_id) {
g_set_error (error, GST_GL_WINDOW_ERROR,
GST_GL_WINDOW_ERROR_RESOURCE_UNAVAILABLE, "Can't create window");
return FALSE;
}
fbGetWindowGeometry (window_egl->win_id, NULL, NULL,
&window_egl->window_width, &window_egl->window_height);
window_egl->render_rectangle.x = 0;
window_egl->render_rectangle.y = 0;
window_egl->render_rectangle.w = window_egl->window_width;
window_egl->render_rectangle.h = window_egl->window_height;
gst_gl_window_resize (window, window_egl->window_width,
window_egl->window_height);
GST_DEBUG
("Opened Vivante FB display succesfully, resolution is (%dx%d), display %p, window %p.",
window_egl->window_width, window_egl->window_height, (gpointer) display,
(gpointer) window_egl->win_id);
return GST_GL_WINDOW_CLASS (parent_class)->open (window, error);
}
static guintptr
gst_gl_window_viv_fb_egl_get_window_handle (GstGLWindow * window)
{
return (guintptr) GST_GL_WINDOW_VIV_FB_EGL (window)->win_id;
}
static void
gst_gl_window_viv_fb_egl_set_window_handle (GstGLWindow * window,
guintptr handle)
{
GstGLWindowVivFBEGL *window_egl = GST_GL_WINDOW_VIV_FB_EGL (window);
gint width, height;
if (window_egl->win_id)
fbDestroyWindow (window_egl->win_id);
window_egl->win_id = (EGLNativeWindowType) handle;
window_egl->external_window = handle != 0;
fbGetWindowGeometry (window_egl->win_id, NULL, NULL, &width, &height);
gst_gl_window_resize (window, width, height);
}
static void
draw_cb (gpointer data)
{
GstGLWindowVivFBEGL *window_egl = data;
GstGLWindow *window = GST_GL_WINDOW (window_egl);
GstGLContext *context = gst_gl_window_get_context (window);
const GstGLFuncs *gl;
gint viewport_dim[4];
gl = context->gl_vtable;
if (window->queue_resize) {
guint width, height;
gst_gl_window_get_surface_dimensions (window, &width, &height);
gst_gl_window_resize (window, width, height);
gl->GetIntegerv (GL_VIEWPORT, viewport_dim);
viewport_dim[0] += window_egl->render_rectangle.x;
viewport_dim[1] += window_egl->render_rectangle.y;
gl->Viewport (viewport_dim[0],
viewport_dim[1], viewport_dim[2], viewport_dim[3]);
}
if (window->draw)
window->draw (window->draw_data);
gst_gl_context_swap_buffers (context);
gst_object_unref (context);
}
static void
gst_gl_window_viv_fb_egl_draw (GstGLWindow * window)
{
gst_gl_window_send_message (window, (GstGLWindowCB) draw_cb, window);
}
typedef struct
{
GstGLWindowVivFBEGL *window_egl;
GstVideoRectangle rect;
} SetRenderRectangleData;
static void
_free_set_render_rectangle (SetRenderRectangleData * render)
{
if (render) {
if (render->window_egl)
gst_object_unref (render->window_egl);
g_free (render);
}
}
static void
_calculate_viewport_coordinates(GstGLWindowVivFBEGL * window_egl,
GstVideoRectangle * req, GstVideoRectangle * result)
{
result->x = req->x;
result->y = window_egl->window_height - (req->y + req->h);
result->w = req->w;
result->h = req->h;
}
static void
_set_render_rectangle (gpointer data)
{
SetRenderRectangleData *render = data;
GstGLWindowVivFBEGL *window_egl = render->window_egl;
GstGLWindow *window = GST_GL_WINDOW (window_egl);
GST_LOG_OBJECT (render->window_egl, "setting render rectangle %i,%i+%ix%i",
render->rect.x, render->rect.y, render->rect.w, render->rect.h);
_calculate_viewport_coordinates (window_egl, &render->rect,
&window_egl->render_rectangle);
gst_gl_window_resize (window, render->rect.w, render->rect.h);
window->queue_resize = TRUE;
}
static gboolean
gst_gl_window_viv_fb_egl_set_render_rectangle (GstGLWindow * window,
gint x, gint y, gint width, gint height)
{
GstGLWindowVivFBEGL *window_egl = GST_GL_WINDOW_VIV_FB_EGL (window);
SetRenderRectangleData *render;
render = g_new0 (SetRenderRectangleData, 1);
render->window_egl = gst_object_ref (window_egl);
render->rect.x = x;
render->rect.y = y;
render->rect.w = width;
render->rect.h = height;
gst_gl_window_send_message_async (window,
(GstGLWindowCB) _set_render_rectangle, render,
(GDestroyNotify) _free_set_render_rectangle);
return TRUE;
}