gstreamer/ext/sdl/sdlvideosink.c
2012-01-27 15:47:07 +00:00

1005 lines
30 KiB
C

/* GStreamer SDL plugin
* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* let's not forget to mention that all this was based on aasink ;-) */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <signal.h>
#include <string.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <stdlib.h>
#include <gst/glib-compat-private.h>
#include <gst/interfaces/xoverlay.h>
#include <gst/interfaces/navigation.h>
#include "sdlvideosink.h"
GST_DEBUG_CATEGORY_EXTERN (sdl_debug);
#define GST_CAT_DEFAULT sdl_debug
/* These macros are adapted from videotestsrc.c
* and/or gst-plugins/gst/games/gstvideoimage.c */
#define I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width))
#define I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2)
#define I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(I420_Y_ROWSTRIDE(width)))/2)
#define I420_Y_OFFSET(w,h) (0)
#define I420_U_OFFSET(w,h) (I420_Y_OFFSET(w,h)+(I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h)))
#define I420_V_OFFSET(w,h) (I420_U_OFFSET(w,h)+(I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
#define I420_SIZE(w,h) (I420_V_OFFSET(w,h)+(I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
enum
{
PROP_0,
PROP_FULLSCREEN
};
static void gst_sdlvideosink_interface_init (GstImplementsInterfaceClass *
klass);
static gboolean gst_sdlvideosink_supported (GstImplementsInterface * iface,
GType type);
static void gst_sdlvideosink_xoverlay_init (GstXOverlayClass * klass);
static void gst_sdlvideosink_xoverlay_set_window_handle
(GstXOverlay * overlay, guintptr parent);
static gboolean gst_sdlvideosink_lock (GstSDLVideoSink * sdl);
static void gst_sdlvideosink_unlock (GstSDLVideoSink * sdl);
static gboolean gst_sdlvideosink_initsdl (GstSDLVideoSink * sdl);
static void gst_sdlvideosink_deinitsdl (GstSDLVideoSink * sdl);
static gboolean gst_sdlvideosink_create (GstSDLVideoSink * sdl);
static void gst_sdlvideosink_destroy (GstSDLVideoSink * sdl);
static gboolean gst_sdlvideosink_setcaps (GstBaseSink * bsink, GstCaps * caps);
static GstFlowReturn gst_sdlvideosink_show_frame (GstBaseSink * bsink,
GstBuffer * buff);
static void gst_sdlvideosink_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_sdlvideosink_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstStateChangeReturn
gst_sdlvideosink_change_state (GstElement * element, GstStateChange transition);
static void gst_sdlvideosink_navigation_init (GstNavigationInterface * iface);
static void gst_sdlv_process_events (GstSDLVideoSink * sdlvideosink);
static GstPadTemplate *sink_template;
static void
_do_init (GType type)
{
static const GInterfaceInfo iface_info = {
(GInterfaceInitFunc) gst_sdlvideosink_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo xoverlay_info = {
(GInterfaceInitFunc) gst_sdlvideosink_xoverlay_init,
NULL,
NULL,
};
static const GInterfaceInfo navigation_info = {
(GInterfaceInitFunc) gst_sdlvideosink_navigation_init,
NULL,
NULL,
};
g_type_add_interface_static (type,
GST_TYPE_IMPLEMENTS_INTERFACE, &iface_info);
g_type_add_interface_static (type, GST_TYPE_X_OVERLAY, &xoverlay_info);
g_type_add_interface_static (type, GST_TYPE_NAVIGATION, &navigation_info);
}
GST_BOILERPLATE_FULL (GstSDLVideoSink, gst_sdlvideosink, GstVideoSink,
GST_TYPE_VIDEO_SINK, _do_init);
static void
gst_sdlvideosink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstCaps *capslist;
gint i;
guint32 formats[] = {
GST_MAKE_FOURCC ('I', '4', '2', '0'),
GST_MAKE_FOURCC ('Y', 'V', '1', '2'),
GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'),
GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U'),
GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y')
};
/* make a list of all available caps */
capslist = gst_caps_new_empty ();
for (i = 0; i < G_N_ELEMENTS (formats); i++) {
gst_caps_append_structure (capslist,
gst_structure_new ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, formats[i],
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 100, 1, NULL));
}
sink_template = gst_pad_template_new ("sink",
GST_PAD_SINK, GST_PAD_ALWAYS, capslist);
gst_element_class_add_pad_template (element_class, sink_template);
gst_object_unref (sink_template);
gst_element_class_set_details_simple (element_class, "SDL video sink",
"Sink/Video", "An SDL-based videosink",
"Ronald Bultje <rbultje@ronald.bitfreak.net>, "
"Edgard Lima <edgard.lima@indt.org.br>, "
"Jan Schmidt <thaytan@mad.scientist.com>");
}
static void
gst_sdlvideosink_finalize (GObject * obj)
{
g_mutex_free (GST_SDLVIDEOSINK (obj)->lock);
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_sdlvideosink_get_times (GstBaseSink * basesink, GstBuffer * buffer,
GstClockTime * start, GstClockTime * end)
{
GstSDLVideoSink *sdlvideosink = GST_SDLVIDEOSINK (basesink);
GstClockTime timestamp, duration;
timestamp = GST_BUFFER_TIMESTAMP (buffer);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
*start = timestamp;
duration = GST_BUFFER_DURATION (buffer);
if (GST_CLOCK_TIME_IS_VALID (duration)) {
*end = timestamp + duration;
} else {
if (sdlvideosink->framerate_n > 0) {
*end = timestamp +
gst_util_uint64_scale_int (GST_SECOND, sdlvideosink->framerate_d,
sdlvideosink->framerate_n);
}
}
}
}
static void
gst_sdlvideosink_class_init (GstSDLVideoSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSinkClass *gstvs_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstvs_class = (GstBaseSinkClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_sdlvideosink_set_property;
gobject_class->get_property = gst_sdlvideosink_get_property;
gobject_class->finalize = gst_sdlvideosink_finalize;
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_sdlvideosink_change_state);
gstvs_class->set_caps = GST_DEBUG_FUNCPTR (gst_sdlvideosink_setcaps);
gstvs_class->get_times = GST_DEBUG_FUNCPTR (gst_sdlvideosink_get_times);
gstvs_class->preroll = GST_DEBUG_FUNCPTR (gst_sdlvideosink_show_frame);
gstvs_class->render = GST_DEBUG_FUNCPTR (gst_sdlvideosink_show_frame);
g_object_class_install_property (gobject_class, PROP_FULLSCREEN,
g_param_spec_boolean ("fullscreen", "Fullscreen",
"If true it will be Full screen", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/*gstvs_class->set_video_out = gst_sdlvideosink_set_video_out;
gstvs_class->push_ui_event = gst_sdlvideosink_push_ui_event;
gstvs_class->set_geometry = gst_sdlvideosink_set_geometry; */
}
#if 0
/* FIXME */
static GstBuffer *
gst_sdlvideosink_buffer_new (GstBufferPool * pool,
gint64 location, guint size, gpointer user_data)
{
GstSDLVideoSink *sdlvideosink = GST_SDLVIDEOSINK (user_data);
GstBuffer *buffer;
if (!sdlvideosink->overlay)
return NULL;
if (!gst_sdlvideosink_lock (sdlvideosink)) {
return NULL;
}
/* this protects the buffer from being written over multiple times */
g_mutex_lock (sdlvideosink->lock);
buffer = gst_buffer_new ();
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_DONTFREE);
GST_BUFFER_DATA (buffer) = sdlvideosink->overlay->pixels[0];
if (sdlvideosink->format == SDL_YV12_OVERLAY ||
sdlvideosink->format == SDL_IYUV_OVERLAY) {
GST_BUFFER_SIZE (buffer) =
sdlvideosink->width * sdlvideosink->height * 3 / 2;
} else {
GST_BUFFER_SIZE (buffer) = sdlvideosink->width * sdlvideosink->height * 2;
}
GST_BUFFER_MAXSIZE (buffer) = GST_BUFFER_SIZE (buffer);
return buffer;
}
static void
gst_sdlvideosink_buffer_free (GstBufferPool * pool,
GstBuffer * buffer, gpointer user_data)
{
GstSDLVideoSink *sdlvideosink = GST_SDLVIDEOSINK (user_data);
g_mutex_unlock (sdlvideosink->lock);
gst_sdlvideosink_unlock (sdlvideosink);
gst_buffer_default_free (buffer);
}
static GstBufferPool *
gst_sdlvideosink_get_bufferpool (GstPad * pad)
{
GstSDLVideoSink *sdlvideosink = GST_SDLVIDEOSINK (gst_pad_get_parent (pad));
if (sdlvideosink->overlay)
return sdlvideosink->bufferpool;
return NULL;
}
#endif
static void
gst_sdlvideosink_init (GstSDLVideoSink * sdlvideosink,
GstSDLVideoSinkClass * g_class)
{
sdlvideosink->width = -1;
sdlvideosink->height = -1;
sdlvideosink->framerate_n = 0;
sdlvideosink->framerate_d = 1;
sdlvideosink->full_screen = FALSE;
sdlvideosink->overlay = NULL;
sdlvideosink->screen = NULL;
sdlvideosink->xwindow_id = 0;
//sdlvideosink->capslist = capslist;
sdlvideosink->init = FALSE;
sdlvideosink->event_thread = NULL;
sdlvideosink->running = FALSE;
sdlvideosink->lock = g_mutex_new ();
}
static void
gst_sdlvideosink_interface_init (GstImplementsInterfaceClass * klass)
{
klass->supported = gst_sdlvideosink_supported;
}
static gboolean
gst_sdlvideosink_supported (GstImplementsInterface * interface,
GType iface_type)
{
GstSDLVideoSink *sdlvideosink = GST_SDLVIDEOSINK (interface);
gboolean result = FALSE;
/* check SDL for whether it was compiled against X, FB, etc. */
if (iface_type == GST_TYPE_X_OVERLAY) {
gchar tmp[4];
if (!sdlvideosink->init) {
g_mutex_lock (sdlvideosink->lock);
SDL_Init (SDL_INIT_VIDEO);
/* True if the video driver is X11 */
result = (strcmp ("x11", SDL_VideoDriverName (tmp, 4)) == 0);
SDL_QuitSubSystem (SDL_INIT_VIDEO);
g_mutex_unlock (sdlvideosink->lock);
} else
result = sdlvideosink->is_xwindows;
} else if (iface_type == GST_TYPE_NAVIGATION)
result = TRUE;
return result;
}
/* SDL Video sink and X overlay:
*
* SDL supports creating an Xv window/overlay within an existing X window
* through the horrible mechanism of setting the WINDOWID environment
* variable.
* It will then display the x overlay within that window, but not at the
* full window size. Instead, we need to explicitly tell SDL the size.
*
* Unfortunately, the XOverlay interface in GStreamer doesn't supply
* that information. The only way to get it would be to do what X[v]imagesink
* does and retrieve it using X11 calls, and linking to Xlib. That would
* defeat the whole purpose of using the SDL abstraction and plugin entirely
* however.
*
* I have no nice solution to this problem for you, dear readers.
*/
static void
gst_sdlvideosink_xoverlay_init (GstXOverlayClass * klass)
{
klass->set_window_handle = gst_sdlvideosink_xoverlay_set_window_handle;
}
static void
gst_sdlvideosink_xoverlay_set_window_handle (GstXOverlay * overlay,
guintptr handle)
{
GstSDLVideoSink *sdlvideosink = GST_SDLVIDEOSINK (overlay);
unsigned long parent = (unsigned long) handle;
if (sdlvideosink->xwindow_id == parent)
return;
sdlvideosink->xwindow_id = parent;
/* are we running yet? */
if (sdlvideosink->init) {
gboolean negotiated;
g_mutex_lock (sdlvideosink->lock);
negotiated = (sdlvideosink->overlay != NULL);
if (negotiated)
gst_sdlvideosink_destroy (sdlvideosink);
/* Call initsdl to set the WINDOWID env var urk */
gst_sdlvideosink_initsdl (sdlvideosink);
if (negotiated)
gst_sdlvideosink_create (sdlvideosink);
g_mutex_unlock (sdlvideosink->lock);
}
}
static guint32
gst_sdlvideosink_get_sdl_from_fourcc (GstSDLVideoSink * sdlvideosink,
guint32 code)
{
switch (code) {
/* Note: SDL_IYUV_OVERLAY does not always work for I420 */
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
return SDL_YV12_OVERLAY;
case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
return SDL_YV12_OVERLAY;
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
return SDL_YUY2_OVERLAY;
case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
return SDL_UYVY_OVERLAY;
case GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U'):
return SDL_YVYU_OVERLAY;
default:
return 0;
}
}
static gboolean
gst_sdlvideosink_lock (GstSDLVideoSink * sdlvideosink)
{
/* assure that we've got a screen */
if (!sdlvideosink->screen || !sdlvideosink->overlay)
goto no_setup;
/* Lock SDL/yuv-overlay */
if (SDL_MUSTLOCK (sdlvideosink->screen)) {
if (SDL_LockSurface (sdlvideosink->screen) < 0)
goto could_not_lock;
}
if (SDL_LockYUVOverlay (sdlvideosink->overlay) < 0)
goto lock_yuv;
return TRUE;
/* ERRORS */
no_setup:
{
GST_ELEMENT_ERROR (sdlvideosink, LIBRARY, TOO_LAZY, (NULL),
("Tried to lock screen without being set-up"));
return FALSE;
}
could_not_lock:
{
GST_ELEMENT_ERROR (sdlvideosink, LIBRARY, TOO_LAZY, (NULL),
("SDL: couldn't lock the SDL video window: %s", SDL_GetError ()));
return FALSE;
}
lock_yuv:
{
GST_ELEMENT_ERROR (sdlvideosink, LIBRARY, TOO_LAZY, (NULL),
("SDL: couldn\'t lock the SDL YUV overlay: %s", SDL_GetError ()));
return FALSE;
}
}
static void
gst_sdlvideosink_unlock (GstSDLVideoSink * sdlvideosink)
{
/* Unlock SDL_overlay */
SDL_UnlockYUVOverlay (sdlvideosink->overlay);
if (SDL_MUSTLOCK (sdlvideosink->screen))
SDL_UnlockSurface (sdlvideosink->screen);
}
/* Must be called with ->lock held */
static void
gst_sdlvideosink_deinitsdl (GstSDLVideoSink * sdlvideosink)
{
if (sdlvideosink->init) {
sdlvideosink->running = FALSE;
if (sdlvideosink->event_thread) {
g_mutex_unlock (sdlvideosink->lock);
g_thread_join (sdlvideosink->event_thread);
g_mutex_lock (sdlvideosink->lock);
sdlvideosink->event_thread = NULL;
}
SDL_QuitSubSystem (SDL_INIT_VIDEO);
sdlvideosink->init = FALSE;
}
}
/* Process pending events. Call with ->lock held */
static void
gst_sdlv_process_events (GstSDLVideoSink * sdlvideosink)
{
SDL_Event event;
int numevents;
char *keysym = NULL;
do {
SDL_PumpEvents ();
numevents = SDL_PeepEvents (&event, 1, SDL_GETEVENT,
SDL_KEYDOWNMASK | SDL_KEYUPMASK |
SDL_MOUSEMOTIONMASK | SDL_MOUSEBUTTONDOWNMASK |
SDL_MOUSEBUTTONUPMASK | SDL_QUITMASK | SDL_VIDEORESIZEMASK);
if (numevents > 0 && (event.type == SDL_KEYUP || event.type == SDL_KEYDOWN)) {
keysym = SDL_GetKeyName (event.key.keysym.sym);
}
if (numevents > 0) {
g_mutex_unlock (sdlvideosink->lock);
switch (event.type) {
case SDL_MOUSEMOTION:
gst_navigation_send_mouse_event (GST_NAVIGATION (sdlvideosink),
"mouse-move", 0, event.motion.x, event.motion.y);
break;
case SDL_MOUSEBUTTONDOWN:
gst_navigation_send_mouse_event (GST_NAVIGATION (sdlvideosink),
"mouse-button-press",
event.button.button, event.button.x, event.button.y);
break;
case SDL_MOUSEBUTTONUP:
gst_navigation_send_mouse_event (GST_NAVIGATION (sdlvideosink),
"mouse-button-release",
event.button.button, event.button.x, event.button.y);
break;
case SDL_KEYUP:
GST_DEBUG ("key press event %s !",
SDL_GetKeyName (event.key.keysym.sym));
gst_navigation_send_key_event (GST_NAVIGATION (sdlvideosink),
"key-release", keysym);
break;
case SDL_KEYDOWN:
if (SDLK_ESCAPE != event.key.keysym.sym) {
GST_DEBUG ("key press event %s !",
SDL_GetKeyName (event.key.keysym.sym));
gst_navigation_send_key_event (GST_NAVIGATION (sdlvideosink),
"key-press", keysym);
break;
} else {
/* fall through */
}
case SDL_QUIT:
sdlvideosink->running = FALSE;
GST_ELEMENT_ERROR (sdlvideosink, RESOURCE, OPEN_WRITE,
("Video output device is gone."),
("We were running fullscreen and user "
"pressed the ESC key, stopping playback."));
break;
case SDL_VIDEORESIZE:
/* create a SDL window of the size requested by the user */
g_mutex_lock (sdlvideosink->lock);
GST_VIDEO_SINK_WIDTH (sdlvideosink) = event.resize.w;
GST_VIDEO_SINK_HEIGHT (sdlvideosink) = event.resize.h;
gst_sdlvideosink_create (sdlvideosink);
g_mutex_unlock (sdlvideosink->lock);
break;
}
g_mutex_lock (sdlvideosink->lock);
}
} while (numevents > 0);
}
static gpointer
gst_sdlvideosink_event_thread (GstSDLVideoSink * sdlvideosink)
{
g_mutex_lock (sdlvideosink->lock);
while (sdlvideosink->running) {
gst_sdlv_process_events (sdlvideosink);
/* Done events, sleep for 50 ms */
g_mutex_unlock (sdlvideosink->lock);
g_usleep (50000);
g_mutex_lock (sdlvideosink->lock);
}
g_mutex_unlock (sdlvideosink->lock);
return NULL;
}
/* Must be called with the SDL lock held */
static gboolean
gst_sdlvideosink_initsdl (GstSDLVideoSink * sdlvideosink)
{
gst_sdlvideosink_deinitsdl (sdlvideosink);
if (sdlvideosink->is_xwindows && !sdlvideosink->xwindow_id) {
g_mutex_unlock (sdlvideosink->lock);
gst_x_overlay_prepare_xwindow_id (GST_X_OVERLAY (sdlvideosink));
g_mutex_lock (sdlvideosink->lock);
}
if (!sdlvideosink->xwindow_id) {
g_unsetenv ("SDL_WINDOWID");
} else {
char SDL_hack[32];
sprintf (SDL_hack, "%lu", sdlvideosink->xwindow_id);
g_setenv ("SDL_WINDOWID", SDL_hack, 1);
}
/* Initialize the SDL library */
if (SDL_Init (SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0)
goto init_failed;
sdlvideosink->init = TRUE;
sdlvideosink->running = TRUE;
sdlvideosink->event_thread =
g_thread_create ((GThreadFunc) gst_sdlvideosink_event_thread,
sdlvideosink, TRUE, NULL);
return TRUE;
/* ERRORS */
init_failed:
{
GST_ELEMENT_ERROR (sdlvideosink, LIBRARY, INIT, (NULL),
("Couldn't initialize SDL: %s", SDL_GetError ()));
return FALSE;
}
}
/* Must be called with the sdl lock held */
static void
gst_sdlvideosink_destroy (GstSDLVideoSink * sdlvideosink)
{
if (sdlvideosink->overlay) {
SDL_FreeYUVOverlay (sdlvideosink->overlay);
sdlvideosink->overlay = NULL;
}
if (sdlvideosink->screen) {
SDL_FreeSurface (sdlvideosink->screen);
sdlvideosink->screen = NULL;
}
sdlvideosink->xwindow_id = 0;
}
/* Must be called with the sdl lock held */
static gboolean
gst_sdlvideosink_create (GstSDLVideoSink * sdlvideosink)
{
if (GST_VIDEO_SINK_HEIGHT (sdlvideosink) <= 0)
GST_VIDEO_SINK_HEIGHT (sdlvideosink) = sdlvideosink->height;
if (GST_VIDEO_SINK_WIDTH (sdlvideosink) <= 0)
GST_VIDEO_SINK_WIDTH (sdlvideosink) = sdlvideosink->width;
gst_sdlvideosink_destroy (sdlvideosink);
if (sdlvideosink->is_xwindows && !sdlvideosink->xwindow_id) {
g_mutex_unlock (sdlvideosink->lock);
gst_x_overlay_prepare_xwindow_id (GST_X_OVERLAY (sdlvideosink));
g_mutex_lock (sdlvideosink->lock);
}
/* create a SDL window of the size requested by the user */
if (sdlvideosink->full_screen) {
sdlvideosink->screen =
SDL_SetVideoMode (GST_VIDEO_SINK_WIDTH (sdlvideosink),
GST_VIDEO_SINK_HEIGHT (sdlvideosink), 0,
SDL_SWSURFACE | SDL_FULLSCREEN);
} else {
sdlvideosink->screen =
SDL_SetVideoMode (GST_VIDEO_SINK_WIDTH (sdlvideosink),
GST_VIDEO_SINK_HEIGHT (sdlvideosink), 0, SDL_HWSURFACE | SDL_RESIZABLE);
}
if (sdlvideosink->screen == NULL)
goto no_screen;
/* create a new YUV overlay */
sdlvideosink->overlay = SDL_CreateYUVOverlay (sdlvideosink->width,
sdlvideosink->height, sdlvideosink->format, sdlvideosink->screen);
if (sdlvideosink->overlay == NULL)
goto no_overlay;
GST_DEBUG ("Using a %dx%d %dbpp SDL screen with a %dx%d \'%"
GST_FOURCC_FORMAT "\' YUV overlay", GST_VIDEO_SINK_WIDTH (sdlvideosink),
GST_VIDEO_SINK_HEIGHT (sdlvideosink),
sdlvideosink->screen->format->BitsPerPixel, sdlvideosink->width,
sdlvideosink->height, GST_FOURCC_ARGS (sdlvideosink->format));
sdlvideosink->rect.x = 0;
sdlvideosink->rect.y = 0;
sdlvideosink->rect.w = GST_VIDEO_SINK_WIDTH (sdlvideosink);
sdlvideosink->rect.h = GST_VIDEO_SINK_HEIGHT (sdlvideosink);
/*SDL_DisplayYUVOverlay (sdlvideosink->overlay, &(sdlvideosink->rect)); */
GST_DEBUG ("sdlvideosink: setting %08x (%" GST_FOURCC_FORMAT ")",
sdlvideosink->format, GST_FOURCC_ARGS (sdlvideosink->format));
return TRUE;
/* ERRORS */
no_screen:
{
GST_ELEMENT_ERROR (sdlvideosink, LIBRARY, TOO_LAZY, (NULL),
("SDL: Couldn't set %dx%d: %s", GST_VIDEO_SINK_WIDTH (sdlvideosink),
GST_VIDEO_SINK_HEIGHT (sdlvideosink), SDL_GetError ()));
return FALSE;
}
no_overlay:
{
GST_ELEMENT_ERROR (sdlvideosink, LIBRARY, TOO_LAZY, (NULL),
("SDL: Couldn't create SDL YUV overlay (%dx%d \'%" GST_FOURCC_FORMAT
"\'): %s", sdlvideosink->width, sdlvideosink->height,
GST_FOURCC_ARGS (sdlvideosink->format), SDL_GetError ()));
return FALSE;
}
}
static gboolean
gst_sdlvideosink_setcaps (GstBaseSink * bsink, GstCaps * vscapslist)
{
GstSDLVideoSink *sdlvideosink;
GstStructure *structure;
gboolean res = TRUE;
sdlvideosink = GST_SDLVIDEOSINK (bsink);
structure = gst_caps_get_structure (vscapslist, 0);
gst_structure_get_fourcc (structure, "format", &sdlvideosink->fourcc);
sdlvideosink->format =
gst_sdlvideosink_get_sdl_from_fourcc (sdlvideosink, sdlvideosink->fourcc);
gst_structure_get_int (structure, "width", &sdlvideosink->width);
gst_structure_get_int (structure, "height", &sdlvideosink->height);
gst_structure_get_fraction (structure, "framerate",
&sdlvideosink->framerate_n, &sdlvideosink->framerate_d);
g_mutex_lock (sdlvideosink->lock);
if (!sdlvideosink->format || !gst_sdlvideosink_create (sdlvideosink))
res = FALSE;
g_mutex_unlock (sdlvideosink->lock);
return res;
}
static GstFlowReturn
gst_sdlvideosink_show_frame (GstBaseSink * bsink, GstBuffer * buf)
{
GstSDLVideoSink *sdlvideosink;
sdlvideosink = GST_SDLVIDEOSINK (bsink);
g_mutex_lock (sdlvideosink->lock);
if (!sdlvideosink->init ||
!sdlvideosink->overlay || !sdlvideosink->overlay->pixels)
goto not_init;
/* if (GST_BUFFER_DATA (buf) != sdlvideosink->overlay->pixels[0]) */
if (TRUE) {
guint8 *out;
gint l;
if (!gst_sdlvideosink_lock (sdlvideosink))
goto cannot_lock;
/* buf->yuv - FIXME: bufferpool! */
if (sdlvideosink->format == SDL_YV12_OVERLAY) {
guint8 *y, *u, *v;
switch (sdlvideosink->fourcc) {
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
y = GST_BUFFER_DATA (buf);
/* I420 is YV12 with switched colour planes and different offsets */
v = y + I420_U_OFFSET (sdlvideosink->width, sdlvideosink->height);
u = y + I420_V_OFFSET (sdlvideosink->width, sdlvideosink->height);
break;
case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
y = GST_BUFFER_DATA (buf);
u = y + I420_U_OFFSET (sdlvideosink->width, sdlvideosink->height);
v = y + I420_V_OFFSET (sdlvideosink->width, sdlvideosink->height);
break;
default:
gst_sdlvideosink_unlock (sdlvideosink);
g_mutex_unlock (sdlvideosink->lock);
g_return_val_if_reached (GST_FLOW_ERROR);
}
/* Y Plane */
out = sdlvideosink->overlay->pixels[0];
for (l = 0; l < sdlvideosink->height; l++) {
memcpy (out, y, I420_Y_ROWSTRIDE (sdlvideosink->width));
out += sdlvideosink->overlay->pitches[0];
y += I420_Y_ROWSTRIDE (sdlvideosink->width);
}
/* U plane */
out = sdlvideosink->overlay->pixels[1];
for (l = 0; l < (sdlvideosink->height / 2); l++) {
memcpy (out, u, I420_U_ROWSTRIDE (sdlvideosink->width));
out += sdlvideosink->overlay->pitches[1];
u += I420_U_ROWSTRIDE (sdlvideosink->width);
}
/* V plane */
out = sdlvideosink->overlay->pixels[2];
for (l = 0; l < (sdlvideosink->height / 2); l++) {
memcpy (out, v, I420_V_ROWSTRIDE (sdlvideosink->width));
out += sdlvideosink->overlay->pitches[2];
v += I420_V_ROWSTRIDE (sdlvideosink->width);
}
} else {
guint8 *in = GST_BUFFER_DATA (buf);
gint in_stride = sdlvideosink->width * 2;
out = sdlvideosink->overlay->pixels[0];
for (l = 0; l < sdlvideosink->height; l++) {
memcpy (out, in, in_stride);
out += sdlvideosink->overlay->pitches[0];
in += in_stride;
}
}
gst_sdlvideosink_unlock (sdlvideosink);
}
/* Show, baby, show! */
SDL_DisplayYUVOverlay (sdlvideosink->overlay, &(sdlvideosink->rect));
/* Handle any resize */
gst_sdlv_process_events (sdlvideosink);
g_mutex_unlock (sdlvideosink->lock);
return GST_FLOW_OK;
/* ERRORS */
not_init:
{
GST_ELEMENT_ERROR (sdlvideosink, CORE, NEGOTIATION, (NULL),
("not negotiated."));
g_mutex_unlock (sdlvideosink->lock);
return GST_FLOW_NOT_NEGOTIATED;
}
cannot_lock:
{
/* lock function posted detailed message */
g_mutex_unlock (sdlvideosink->lock);
return GST_FLOW_ERROR;
}
}
static void
gst_sdlvideosink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstSDLVideoSink *sdlvideosink;
sdlvideosink = GST_SDLVIDEOSINK (object);
switch (prop_id) {
case PROP_FULLSCREEN:
sdlvideosink->full_screen = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_sdlvideosink_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstSDLVideoSink *sdlvideosink;
sdlvideosink = GST_SDLVIDEOSINK (object);
switch (prop_id) {
case PROP_FULLSCREEN:
g_value_set_boolean (value, sdlvideosink->full_screen);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_sdlvideosink_change_state (GstElement * element, GstStateChange transition)
{
GstSDLVideoSink *sdlvideosink;
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
g_return_val_if_fail (GST_IS_SDLVIDEOSINK (element),
GST_STATE_CHANGE_FAILURE);
sdlvideosink = GST_SDLVIDEOSINK (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
sdlvideosink->is_xwindows = GST_IS_X_OVERLAY (sdlvideosink);
g_mutex_lock (sdlvideosink->lock);
if (!gst_sdlvideosink_initsdl (sdlvideosink)) {
g_mutex_unlock (sdlvideosink->lock);
goto init_failed;
}
GST_OBJECT_FLAG_SET (sdlvideosink, GST_SDLVIDEOSINK_OPEN);
g_mutex_unlock (sdlvideosink->lock);
break;
default: /* do nothing */
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
sdlvideosink->framerate_n = 0;
sdlvideosink->framerate_d = 1;
g_mutex_lock (sdlvideosink->lock);
gst_sdlvideosink_destroy (sdlvideosink);
g_mutex_unlock (sdlvideosink->lock);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
g_mutex_lock (sdlvideosink->lock);
gst_sdlvideosink_deinitsdl (sdlvideosink);
GST_OBJECT_FLAG_UNSET (sdlvideosink, GST_SDLVIDEOSINK_OPEN);
g_mutex_unlock (sdlvideosink->lock);
break;
default: /* do nothing */
break;
}
return ret;
init_failed:
{
/* method posted detailed error message */
GST_DEBUG_OBJECT (sdlvideosink, "init failed");
return GST_STATE_CHANGE_FAILURE;
}
}
static void
gst_sdlvideosink_navigation_send_event (GstNavigation * navigation,
GstStructure * structure)
{
GstSDLVideoSink *sdlvideosink = GST_SDLVIDEOSINK (navigation);
GstEvent *event;
GstVideoRectangle src, dst, result;
double x, y, old_x, old_y;
GstPad *pad = NULL;
src.w = GST_VIDEO_SINK_WIDTH (sdlvideosink);
src.h = GST_VIDEO_SINK_HEIGHT (sdlvideosink);
dst.w = sdlvideosink->width;
dst.h = sdlvideosink->height;
gst_video_sink_center_rect (src, dst, &result, FALSE);
event = gst_event_new_navigation (structure);
/* Our coordinates can be wrong here if we centered the video */
/* Converting pointer coordinates to the non scaled geometry */
if (gst_structure_get_double (structure, "pointer_x", &old_x)) {
x = old_x;
if (x >= result.x && x <= (result.x + result.w)) {
x -= result.x;
x *= sdlvideosink->width;
x /= result.w;
} else {
x = 0;
}
GST_DEBUG_OBJECT (sdlvideosink, "translated navigation event x "
"coordinate from %f to %f", old_x, x);
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, x, NULL);
}
if (gst_structure_get_double (structure, "pointer_y", &old_y)) {
y = old_y;
if (y >= result.y && y <= (result.y + result.h)) {
y -= result.y;
y *= sdlvideosink->height;
y /= result.h;
} else {
y = 0;
}
GST_DEBUG_OBJECT (sdlvideosink, "translated navigation event y "
"coordinate from %f to %f", old_y, y);
gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE, y, NULL);
}
pad = gst_pad_get_peer (GST_VIDEO_SINK_PAD (sdlvideosink));
if (GST_IS_PAD (pad) && GST_IS_EVENT (event)) {
gst_pad_send_event (pad, event);
gst_object_unref (pad);
}
}
static void
gst_sdlvideosink_navigation_init (GstNavigationInterface * iface)
{
iface->send_event = gst_sdlvideosink_navigation_send_event;
}