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eglglessink: Add bcm/Raspberry Pi support.

Browse source 
This adds a video platform backend for the dispmanx display manager used by
broadcom and the Raspberry Pi.

Signed-off-by: Julian Scheel <julian@jusst.de>
This commit is contained in:
Julian Scheel 2013-02-12 18:36:10 +01:00 committed by Sebastian Dröge
parent f25b0eda09
commit f337777eb5
3 changed files with 142 additions and 2 deletions
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14
configure.ac
View file

@ -1635,7 +1635,7 @@ AG_GST_CHECK_FEATURE(RSVG, [rsvg decoder], rsvg, [
dnl *** eglgles ***
AC_ARG_WITH([egl-window-system],
AS_HELP_STRING([--with-egl-window-system],[EGL window system to use (x11, mali-fb, none)]),
AS_HELP_STRING([--with-egl-window-system],[EGL window system to use (x11, mali-fb, rpi, none)]),
[EGL_WINDOW_SYSTEM="$withval"],
[EGL_WINDOW_SYSTEM="none"])
@ -1711,6 +1711,18 @@ AG_GST_CHECK_FEATURE(EGLGLES, [eglgles sink], eglgles, [
CFLAGS=$old_CFLAGS
])
;;
rpi)
old_LIBS=$LIBS
old_CFLAGS=$CFLAGS
AC_CHECK_HEADER(bcm_host.h, [
HAVE_EGLGLES="yes"
EGLGLES_LIBS="-lGLESv2 -lEGL -lbcm_host"
AC_DEFINE(USE_EGL_RPI, [1], [Use RPi EGL window system])
LIBS=$old_LIBS
CFLAGS=$old_CFLAGS
])
;;
*)
AC_MSG_ERROR([invalid EGL window system specified])
;;

22
ext/eglgles/gsteglglessink.c
View file

@ -128,6 +128,11 @@
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#ifdef USE_EGL_RPI
#include <bcm_host.h>
#include <GLES/gl.h>
#endif
#include "video_platform_wrapper.h"
#include "gsteglglessink.h"
@ -1535,12 +1540,29 @@ static gboolean
gst_eglglessink_init_egl_display (GstEglGlesSink * eglglessink)
{
GST_DEBUG_OBJECT (eglglessink, "Enter EGL initial configuration");
#ifdef USE_EGL_RPI
GST_DEBUG_OBJECT (eglglessink, "Initialize BCM host");
bcm_host_init ();
#endif
#ifndef USE_EGL_RPI
eglglessink->eglglesctx.display = eglGetDisplay (EGL_DEFAULT_DISPLAY);
if (eglglessink->eglglesctx.display == EGL_NO_DISPLAY) {
GST_ERROR_OBJECT (eglglessink, "Could not get EGL display connection");
goto HANDLE_ERROR; /* No EGL error is set by eglGetDisplay() */
}
#else
if (!eglMakeCurrent (1, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT)) {
got_egl_error ("eglMakeCurrent");
GST_ERROR_OBJECT (eglglessink, "Couldn't unbind context");
return FALSE;
}
eglglessink->eglglesctx.display = eglGetDisplay (EGL_DEFAULT_DISPLAY);
if (eglglessink->eglglesctx.display == EGL_NO_DISPLAY) {
GST_ERROR_OBJECT (eglglessink, "Could not get EGL display connection");
goto HANDLE_ERROR; /* No EGL error is set by eglGetDisplay() */
}
#endif
if (!eglInitialize (eglglessink->eglglesctx.display,
&eglglessink->eglglesctx.egl_major,

108
ext/eglgles/video_platform_wrapper.c
View file

@ -616,7 +616,7 @@ platform_free_eglimage (EGLDisplay display, EGLContext context, GLuint tex_id,
#endif
#if !defined(USE_EGL_X11) && !defined(USE_EGL_MALI_FB)
#if !defined(USE_EGL_X11) && !defined(USE_EGL_MALI_FB) && !defined(USE_EGL_RPI)
#include <gst/video/gstvideopool.h>
/* Dummy functions for creating a native Window */
@ -665,3 +665,109 @@ platform_free_eglimage (EGLDisplay display, EGLContext context, GLuint tex_id,
g_assert_not_reached ();
}
#endif
#ifdef USE_EGL_RPI
#include <bcm_host.h>
#include <gst/video/gstvideopool.h>
typedef struct
{
EGL_DISPMANX_WINDOW_T w;
} RPIWindowData;
EGLNativeWindowType
platform_create_native_window (gint width, gint height, gpointer * window_data)
{
DISPMANX_ELEMENT_HANDLE_T dispman_element;
DISPMANX_DISPLAY_HANDLE_T dispman_display;
DISPMANX_UPDATE_HANDLE_T dispman_update;
RPIWindowData *data;
VC_RECT_T dst_rect;
VC_RECT_T src_rect;
uint32_t dp_height;
uint32_t dp_width;
int ret;
ret = graphics_get_display_size (0, &dp_width, &dp_height);
if (ret < 0) {
GST_ERROR ("Can't open display");
return (EGLNativeWindowType) 0;
}
GST_DEBUG ("Got display size: %dx%d\n", dp_width, dp_height);
GST_DEBUG ("Source size: %dx%d\n", width, height);
dst_rect.x = 0;
dst_rect.y = 0;
dst_rect.width = dp_width;
dst_rect.height = dp_height;
src_rect.x = 0;
src_rect.y = 0;
src_rect.width = width << 16;
src_rect.height = height << 16;
dispman_display = vc_dispmanx_display_open (0);
dispman_update = vc_dispmanx_update_start (0);
dispman_element = vc_dispmanx_element_add (dispman_update,
dispman_display, 0, &dst_rect, 0, &src_rect,
DISPMANX_PROTECTION_NONE, 0, 0, 0);
*window_data = data = g_slice_new0 (RPIWindowData);
data->w.element = dispman_element;
data->w.width = width;
data->w.height = height;
vc_dispmanx_update_submit_sync (dispman_update);
return (EGLNativeWindowType) data;
}
gboolean
platform_destroy_native_window (EGLNativeDisplayType display,
EGLNativeWindowType window, gpointer * window_data)
{
DISPMANX_DISPLAY_HANDLE_T dispman_display;
DISPMANX_UPDATE_HANDLE_T dispman_update;
RPIWindowData *data = *window_data;
dispman_display = vc_dispmanx_display_open (0);
dispman_update = vc_dispmanx_update_start (0);
vc_dispmanx_element_remove (dispman_update, data->w.element);
vc_dispmanx_update_submit_sync (dispman_update);
g_slice_free (RPIWindowData, data);
*window_data = NULL;
return TRUE;
}
gboolean
platform_can_map_eglimage (GstMemoryMapFunction * map,
GstMemoryUnmapFunction * unmap, PlatformMapVideo * video_map,
PlatformUnmapVideo * video_unmap)
{
return FALSE;
}
gboolean
platform_has_custom_eglimage_alloc (void)
{
return FALSE;
}
gboolean
platform_alloc_eglimage (EGLDisplay display, EGLContext context, GLint format,
GLint type, gint width, gint height, GLuint tex_id, EGLImageKHR * image,
gpointer * image_platform_data)
{
g_assert_not_reached ();
return FALSE;
}
void
platform_free_eglimage (EGLDisplay display, EGLContext context, GLuint tex_id,
EGLImageKHR * image, gpointer * image_platform_data)
{
g_assert_not_reached ();
}
#endif