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gstreamer/ext/sdl/sdlvideosink.c
Ronald S. Bultje 95011fd7e8 New mimetypes gone into effect today - this commit changes all old mimetypes over to the new mimetypes spec as descri... 
Original commit message from CVS:
New mimetypes gone into effect today - this commit changes all old mimetypes over to the new mimetypes spec as described in the previous commit's document. Note: some plugins will break, some pipelines will break, expect HEAD to be broken or at least not 100% working for a few days, but don't forget to report bugs
2003-07-06 20:49:52 +00:00

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/* 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 <config.h>
#include <signal.h>
#include <string.h>
#include <sys/time.h>
#include <stdlib.h>
#include "sdlvideosink.h"
/* elementfactory information */
static GstElementDetails gst_sdlvideosink_details = {
"Video sink",
"Sink/Video",
"LGPL",
"An SDL-based videosink",
VERSION,
"Ronald Bultje <rbultje@ronald.bitfreak.net>",
"(C) 2001",
};
/* sdlvideosink signals and args */
enum {
SIGNAL_FRAME_DISPLAYED,
SIGNAL_HAVE_SIZE,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_WIDTH,
ARG_HEIGHT,
ARG_XID,
ARG_FRAMES_DISPLAYED,
ARG_FRAME_TIME,
};
static void gst_sdlvideosink_class_init (GstSDLVideoSinkClass *klass);
static void gst_sdlvideosink_init (GstSDLVideoSink *sdlvideosink);
static void gst_sdlvideosink_set_clock (GstElement *element, GstClock *clock);
static gboolean gst_sdlvideosink_create (GstSDLVideoSink *sdlvideosink,
gboolean showlogo);
static GstPadLinkReturn gst_sdlvideosink_sinkconnect (GstPad *pad,
GstCaps *caps);
static void gst_sdlvideosink_chain (GstPad *pad,
GstBuffer *buf);
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 GstElementStateReturn gst_sdlvideosink_change_state (GstElement *element);
static GstCaps *capslist = NULL;
static GstPadTemplate *sink_template;
static GstElementClass *parent_class = NULL;
static guint gst_sdlvideosink_signals[LAST_SIGNAL] = { 0 };
GType
gst_sdlvideosink_get_type (void)
{
static GType sdlvideosink_type = 0;
if (!sdlvideosink_type) {
static const GTypeInfo sdlvideosink_info = {
sizeof(GstSDLVideoSinkClass), NULL,
NULL,
(GClassInitFunc)gst_sdlvideosink_class_init,
NULL,
NULL,
sizeof(GstSDLVideoSink),
0,
(GInstanceInitFunc)gst_sdlvideosink_init,
};
sdlvideosink_type = g_type_register_static(GST_TYPE_ELEMENT,
"GstSDLVideoSink", &sdlvideosink_info, 0);
}
return sdlvideosink_type;
}
static void
gst_sdlvideosink_class_init (GstSDLVideoSinkClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_WIDTH,
g_param_spec_int("width","Width","Width of the video window",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HEIGHT,
g_param_spec_int("height","Height","Height of the video window",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_XID,
g_param_spec_int ("xid", "Xid", "The Xid of the window",
G_MININT, G_MAXINT, 0, G_PARAM_WRITABLE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FRAMES_DISPLAYED,
g_param_spec_int ("frames_displayed", "Frames Displayed", "The number of frames displayed so far",
G_MININT,G_MAXINT, 0, G_PARAM_READABLE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FRAME_TIME,
g_param_spec_int ("frame_time", "Frame time", "The interval between frames",
G_MININT, G_MAXINT, 0, G_PARAM_READABLE));
gobject_class->set_property = gst_sdlvideosink_set_property;
gobject_class->get_property = gst_sdlvideosink_get_property;
gst_sdlvideosink_signals[SIGNAL_FRAME_DISPLAYED] =
g_signal_new ("frame_displayed", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstSDLVideoSinkClass, frame_displayed), NULL, NULL,
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
gst_sdlvideosink_signals[SIGNAL_HAVE_SIZE] =
g_signal_new ("have_size", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstSDLVideoSinkClass, have_size), NULL, NULL,
gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2,
G_TYPE_UINT, G_TYPE_UINT);
gstelement_class->change_state = gst_sdlvideosink_change_state;
gstelement_class->set_clock = gst_sdlvideosink_set_clock;
}
static void
gst_sdlvideosink_set_clock (GstElement *element, GstClock *clock)
{
GstSDLVideoSink *sdlvideosink;
sdlvideosink = GST_SDLVIDEOSINK (element);
sdlvideosink->clock = clock;
}
static void
gst_sdlvideosink_init (GstSDLVideoSink *sdlvideosink)
{
sdlvideosink->sinkpad = gst_pad_new_from_template (sink_template, "sink");
gst_element_add_pad (GST_ELEMENT (sdlvideosink), sdlvideosink->sinkpad);
gst_pad_set_chain_function (sdlvideosink->sinkpad, gst_sdlvideosink_chain);
gst_pad_set_link_function (sdlvideosink->sinkpad, gst_sdlvideosink_sinkconnect);
sdlvideosink->window_width = -1;
sdlvideosink->window_height = -1;
sdlvideosink->image_width = -1;
sdlvideosink->image_height = -1;
sdlvideosink->yuv_overlay = NULL;
sdlvideosink->screen = NULL;
sdlvideosink->window_id = -1; /* means "don't use" */
sdlvideosink->capslist = capslist;
sdlvideosink->clock = NULL;
GST_FLAG_SET(sdlvideosink, GST_ELEMENT_THREAD_SUGGESTED);
GST_FLAG_SET(sdlvideosink, GST_ELEMENT_EVENT_AWARE);
}
static gulong
gst_sdlvideosink_get_sdl_from_fourcc (GstSDLVideoSink *sdlvideosink,
gulong code)
{
switch (code)
{
case GST_MAKE_FOURCC('I','4','2','0'):
return SDL_IYUV_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: {
gst_element_error(GST_ELEMENT(sdlvideosink),
"Unsupported format %08lx (" GST_FOURCC_FORMAT ")",
code, GST_FOURCC_ARGS(code));
return 0;
}
}
}
static gboolean
gst_sdlvideosink_lock (GstSDLVideoSink *sdlvideosink)
{
/* Lock SDL/yuv-overlay */
if (SDL_MUSTLOCK(sdlvideosink->screen))
{
if (SDL_LockSurface(sdlvideosink->screen) < 0)
{
gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: couldn\'t lock the SDL video window: %s", SDL_GetError());
return FALSE;
}
}
if (SDL_LockYUVOverlay(sdlvideosink->yuv_overlay) < 0)
{
gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: couldn\'t lock the SDL YUV overlay: %s", SDL_GetError());
return FALSE;
}
return TRUE;
}
static void
gst_sdlvideosink_unlock (GstSDLVideoSink *sdlvideosink)
{
/* Unlock SDL_yuv_overlay */
SDL_UnlockYUVOverlay(sdlvideosink->yuv_overlay);
if (SDL_MUSTLOCK(sdlvideosink->screen))
SDL_UnlockSurface(sdlvideosink->screen);
}
static gboolean
gst_sdlvideosink_create (GstSDLVideoSink *sdlvideosink, gboolean showlogo)
{
guint8 *sbuffer;
gint i;
if (sdlvideosink->window_height <= 0)
sdlvideosink->window_height = sdlvideosink->image_height;
if (sdlvideosink->window_width <= 0)
sdlvideosink->window_width = sdlvideosink->image_width;
/* create a SDL window of the size requested by the user */
sdlvideosink->screen = SDL_SetVideoMode(sdlvideosink->window_width,
sdlvideosink->window_height, 0, SDL_SWSURFACE | SDL_RESIZABLE);
if (showlogo) /* workaround for SDL bug - do it twice */
sdlvideosink->screen = SDL_SetVideoMode(sdlvideosink->window_width,
sdlvideosink->window_height, 0, SDL_SWSURFACE | SDL_RESIZABLE);
if ( sdlvideosink->screen == NULL)
{
gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: Couldn't set %dx%d: %s", sdlvideosink->window_width,
sdlvideosink->window_height, SDL_GetError());
return FALSE;
}
/* clean possible old YUV overlays (...) and create a new one */
if (sdlvideosink->yuv_overlay)
SDL_FreeYUVOverlay(sdlvideosink->yuv_overlay);
sdlvideosink->yuv_overlay = SDL_CreateYUVOverlay(sdlvideosink->image_width,
sdlvideosink->image_height, sdlvideosink->format, sdlvideosink->screen);
if ( sdlvideosink->yuv_overlay == NULL )
{
gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: Couldn't create SDL_yuv_overlay (%dx%d \'" GST_FOURCC_FORMAT "\'): %s",
sdlvideosink->image_width, sdlvideosink->image_height,
GST_FOURCC_ARGS(sdlvideosink->format), SDL_GetError());
return FALSE;
}
else
{
g_message("Using a %dx%d %dbpp SDL screen with a %dx%d \'" GST_FOURCC_FORMAT "\' YUV overlay\n",
sdlvideosink->window_width, sdlvideosink->window_height,
sdlvideosink->screen->format->BitsPerPixel,
sdlvideosink->image_width, sdlvideosink->image_height,
GST_FOURCC_ARGS(sdlvideosink->format));
}
sdlvideosink->rect.x = 0;
sdlvideosink->rect.y = 0;
sdlvideosink->rect.w = sdlvideosink->window_width;
sdlvideosink->rect.h = sdlvideosink->window_height;
/* make stupid SDL *not* react on SIGINT */
signal(SIGINT, SIG_DFL);
if (showlogo)
{
SDL_Event event;
while (SDL_PollEvent(&event));
if (!gst_sdlvideosink_lock(sdlvideosink)) {
g_message ("could not lock\n");
return FALSE;
}
/* Draw bands of color on the raw surface, as run indicator for debugging */
sbuffer = (char *)sdlvideosink->screen->pixels;
for (i=0; i<sdlvideosink->screen->h; i++)
{
memset(sbuffer, (i*255)/sdlvideosink->screen->h,
sdlvideosink->screen->w * sdlvideosink->screen->format->BytesPerPixel);
sbuffer += sdlvideosink->screen->pitch;
}
/* Set the windows title */
SDL_WM_SetCaption("GStreamer SDL Video Playback", "0000000");
gst_sdlvideosink_unlock(sdlvideosink);
SDL_UpdateRect(sdlvideosink->screen, 0, 0, sdlvideosink->rect.w, sdlvideosink->rect.h);
}
else
SDL_DisplayYUVOverlay(sdlvideosink->yuv_overlay, &(sdlvideosink->rect));
GST_DEBUG ("sdlvideosink: setting %08lx (" GST_FOURCC_FORMAT ")", sdlvideosink->format, GST_FOURCC_ARGS(sdlvideosink->format));
/* TODO: is this the width of the input image stream or of the widget? */
g_signal_emit (G_OBJECT (sdlvideosink), gst_sdlvideosink_signals[SIGNAL_HAVE_SIZE], 0,
sdlvideosink->window_width, sdlvideosink->window_height);
return TRUE;
}
static GstPadLinkReturn
gst_sdlvideosink_sinkconnect (GstPad *pad,
GstCaps *vscapslist)
{
GstSDLVideoSink *sdlvideosink;
GstCaps *caps;
sdlvideosink = GST_SDLVIDEOSINK (gst_pad_get_parent (pad));
/* we are not going to act on variable caps */
if (!GST_CAPS_IS_FIXED (vscapslist))
return GST_PAD_LINK_DELAYED;
for (caps = vscapslist; caps != NULL; caps = vscapslist = vscapslist->next)
{
guint32 format;
gst_caps_get_fourcc_int(caps, "format", &format);
/* check whether it's in any way compatible */
switch (format)
{
case GST_MAKE_FOURCC('I','4','2','0'):
case GST_MAKE_FOURCC('Y','V','1','2'):
case GST_MAKE_FOURCC('Y','U','Y','2'):
case GST_MAKE_FOURCC('Y','V','Y','U'):
case GST_MAKE_FOURCC('U','Y','V','Y'):
sdlvideosink->format = gst_sdlvideosink_get_sdl_from_fourcc (sdlvideosink, format);
gst_caps_get_int(caps, "width", &sdlvideosink->image_width);
gst_caps_get_int(caps, "height", &sdlvideosink->image_height);
/* try it out */
if (!gst_sdlvideosink_create(sdlvideosink, TRUE))
return GST_PAD_LINK_REFUSED;
return GST_PAD_LINK_OK;
}
}
/* if we got here - it's not good */
return GST_PAD_LINK_REFUSED;
}
static void
gst_sdlvideosink_chain (GstPad *pad, GstBuffer *buf)
{
GstSDLVideoSink *sdlvideosink;
SDL_Event sdl_event;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
sdlvideosink = GST_SDLVIDEOSINK (gst_pad_get_parent (pad));
while (SDL_PollEvent(&sdl_event))
{
switch(sdl_event.type)
{
case SDL_VIDEORESIZE:
/* create a SDL window of the size requested by the user */
sdlvideosink->window_width = sdl_event.resize.w;
sdlvideosink->window_height = sdl_event.resize.h;
gst_sdlvideosink_create(sdlvideosink, FALSE);
break;
}
}
if (GST_IS_EVENT (buf)) {
GstEvent *event = GST_EVENT (buf);
gint64 offset;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_DISCONTINUOUS:
offset = GST_EVENT_DISCONT_OFFSET (event, 0).value;
g_print ("sdl discont %" G_GINT64_FORMAT "\n", offset);
/*gst_clock_handle_discont (sdlvideosink->clock, (guint64) GST_EVENT_DISCONT_OFFSET (event, 0).value);*/
break;
default:
gst_pad_event_default (pad, event);
return;
}
gst_event_unref (event);
return;
}
GST_DEBUG ("videosink: clock wait: %" G_GUINT64_FORMAT, GST_BUFFER_TIMESTAMP(buf));
if (sdlvideosink->clock) {
GstClockID id = gst_clock_new_single_shot_id (sdlvideosink->clock, GST_BUFFER_TIMESTAMP (buf));
gst_element_clock_wait (GST_ELEMENT (sdlvideosink), id, NULL);
gst_clock_id_free (id);
}
if (!gst_sdlvideosink_lock(sdlvideosink)) {
g_message ("could not lock\n");
return;
}
/* buf->yuv */
if (sdlvideosink->format == GST_MAKE_FOURCC('I','4','2','0') ||
sdlvideosink->format == GST_MAKE_FOURCC('Y','V','1','2'))
{
sdlvideosink->yuv[0] = GST_BUFFER_DATA(buf);
sdlvideosink->yuv[1] = sdlvideosink->yuv[0] + sdlvideosink->image_width*sdlvideosink->image_height;
sdlvideosink->yuv[2] = sdlvideosink->yuv[1] + sdlvideosink->image_width*sdlvideosink->image_height/4;
}
else
{
sdlvideosink->yuv[0] = GST_BUFFER_DATA(buf);
}
/* let's draw the data (*yuv[3]) on a SDL screen (*buffer) */
sdlvideosink->yuv_overlay->pixels = sdlvideosink->yuv;
gst_sdlvideosink_unlock(sdlvideosink);
/* Show, baby, show! */
SDL_DisplayYUVOverlay(sdlvideosink->yuv_overlay, &(sdlvideosink->rect));
SDL_UpdateRect(sdlvideosink->screen,
sdlvideosink->rect.x, sdlvideosink->rect.y,
sdlvideosink->rect.w, sdlvideosink->rect.h);
g_signal_emit(G_OBJECT(sdlvideosink),gst_sdlvideosink_signals[SIGNAL_FRAME_DISPLAYED],0);
gst_buffer_unref(buf);
}
static void
gst_sdlvideosink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstSDLVideoSink *sdlvideosink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_SDLVIDEOSINK (object));
sdlvideosink = GST_SDLVIDEOSINK(object);
switch (prop_id)
{
case ARG_WIDTH:
sdlvideosink->window_width = g_value_get_int(value);
if (sdlvideosink->yuv_overlay)
gst_sdlvideosink_create(sdlvideosink, FALSE);
break;
case ARG_HEIGHT:
sdlvideosink->window_height = g_value_get_int(value);
if (sdlvideosink->yuv_overlay)
gst_sdlvideosink_create(sdlvideosink, FALSE);
break;
case ARG_XID:
sdlvideosink->window_id = g_value_get_int(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;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_SDLVIDEOSINK (object));
sdlvideosink = GST_SDLVIDEOSINK(object);
switch (prop_id) {
case ARG_WIDTH:
g_value_set_int(value, sdlvideosink->window_width);
break;
case ARG_HEIGHT:
g_value_set_int(value, sdlvideosink->window_height);
break;
case ARG_FRAMES_DISPLAYED:
g_value_set_int (value, sdlvideosink->frames_displayed);
break;
case ARG_FRAME_TIME:
g_value_set_int (value, sdlvideosink->frame_time/1000000);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_sdlvideosink_change_state (GstElement *element)
{
GstSDLVideoSink *sdlvideosink;
g_return_val_if_fail (GST_IS_SDLVIDEOSINK (element), GST_STATE_FAILURE);
sdlvideosink = GST_SDLVIDEOSINK(element);
switch (GST_STATE_TRANSITION (element))
{
case GST_STATE_NULL_TO_READY:
/* Initialize the SDL library */
if (sdlvideosink->window_id < 0)
unsetenv("SDL_WINDOWID");
else
{
char SDL_hack[32];
sprintf(SDL_hack, "%d", sdlvideosink->window_id);
setenv("SDL_WINDOWID", SDL_hack, 1);
}
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0 )
{
gst_element_error(element, "Couldn't initialize SDL: %s", SDL_GetError());
return GST_STATE_FAILURE;
}
GST_FLAG_SET (sdlvideosink, GST_SDLVIDEOSINK_OPEN);
break;
case GST_STATE_READY_TO_NULL:
/*if (sdlvideosink->yuv_overlay)
SDL_FreeYUVOverlay(sdlvideosink->yuv_overlay);
sdlvideosink->yuv_overlay = NULL;*/
SDL_Quit();
GST_FLAG_UNSET (sdlvideosink, GST_SDLVIDEOSINK_OPEN);
break;
default: /* do nothing */
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
GstCaps *caps;
gint i;
gulong format[6] = { 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')
};
/* create an elementfactory for the sdlvideosink element */
factory = gst_element_factory_new("sdlvideosink",GST_TYPE_SDLVIDEOSINK,
&gst_sdlvideosink_details);
g_return_val_if_fail(factory != NULL, FALSE);
/* make a list of all available caps */
for (i=0;i<5;i++)
{
caps = gst_caps_new ("sdlvideosink_caps",
"video/x-raw-yuv",
gst_props_new (
"format", GST_PROPS_FOURCC(format[i]),
"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
"height", GST_PROPS_INT_RANGE (0, G_MAXINT),
"framerate", GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT),
NULL )
);
capslist = gst_caps_append(capslist, caps);
}
sink_template = gst_pad_template_new (
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
capslist, NULL);
gst_element_factory_add_pad_template (factory, sink_template);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"sdlvideosink",
plugin_init
};
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