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Added support for user-specified width and height with YUV-scaling, added support for embedded SDL-windows in other X...

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Original commit message from CVS:
Added support for user-specified width and height with YUV-scaling, added support for embedded SDL-windows in other Xwindows, added support for some more YUV types as input
This commit is contained in:
Ronald S. Bultje 2002-01-10 09:58:15 +00:00
parent 6ad1458f0a
commit 37cd2f7a26
2 changed files with 297 additions and 136 deletions
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427
ext/sdl/sdlvideosink.c
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@ -26,6 +26,7 @@
#include "sdlvideosink.h" #include "sdlvideosink.h"
static GstElementDetails gst_sdlvideosink_details = { static GstElementDetails gst_sdlvideosink_details = {
"Video sink", "Video sink",
"Sink/Video", "Sink/Video",
@ -35,6 +36,7 @@ static GstElementDetails gst_sdlvideosink_details = {
"(C) 2001", "(C) 2001",
}; };
/* sdlvideosink signals and args */ /* sdlvideosink signals and args */
enum { enum {
SIGNAL_FRAME_DISPLAYED, SIGNAL_FRAME_DISPLAYED,
@ -47,43 +49,40 @@ enum {
ARG_0, ARG_0,
ARG_WIDTH, ARG_WIDTH,
ARG_HEIGHT, ARG_HEIGHT,
ARG_DRIVER, ARG_XID,
ARG_DITHER,
ARG_BRIGHTNESS,
ARG_CONTRAST,
ARG_GAMMA,
ARG_INVERSION,
ARG_RANDOMVAL,
ARG_FRAMES_DISPLAYED, ARG_FRAMES_DISPLAYED,
ARG_FRAME_TIME, ARG_FRAME_TIME,
}; };
GST_PADTEMPLATE_FACTORY (sink_template,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"sdlvideosink_caps",
"video/raw",
"format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")),
"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
"height", GST_PROPS_INT_RANGE (0, G_MAXINT)
)
)
static void gst_sdlvideosink_class_init (GstSDLVideoSinkClass *klass);
static void gst_sdlvideosink_init (GstSDLVideoSink *sdlvideosink);
static void gst_sdlvideosink_chain (GstPad *pad, GstBuffer *buf); static void gst_sdlvideosink_class_init (GstSDLVideoSinkClass *klass);
static void gst_sdlvideosink_init (GstSDLVideoSink *sdlvideosink);
static void gst_sdlvideosink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gst_sdlvideosink_newcaps (GstPad *pad,
static void gst_sdlvideosink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); GstCaps *caps);
static void gst_sdlvideosink_close (GstSDLVideoSink *sdlvideosink); static GstPadNegotiateReturn gst_sdlvideosink_negotiate (GstPad *pad,
static GstElementStateReturn gst_sdlvideosink_change_state (GstElement *element); GstCaps **caps,
gpointer *data);
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 GstElementClass *parent_class = NULL;
static guint gst_sdlvideosink_signals[LAST_SIGNAL] = { 0 }; static guint gst_sdlvideosink_signals[LAST_SIGNAL] = { 0 };
GType GType
gst_sdlvideosink_get_type (void) gst_sdlvideosink_get_type (void)
{ {
@ -100,11 +99,13 @@ gst_sdlvideosink_get_type (void)
0, 0,
(GInstanceInitFunc)gst_sdlvideosink_init, (GInstanceInitFunc)gst_sdlvideosink_init,
}; };
sdlvideosink_type = g_type_register_static(GST_TYPE_ELEMENT, "GstSDLVideoSink", &sdlvideosink_info, 0); sdlvideosink_type = g_type_register_static(GST_TYPE_ELEMENT,
"GstSDLVideoSink", &sdlvideosink_info, 0);
} }
return sdlvideosink_type; return sdlvideosink_type;
} }
static void static void
gst_sdlvideosink_class_init (GstSDLVideoSinkClass *klass) gst_sdlvideosink_class_init (GstSDLVideoSinkClass *klass)
{ {
@ -117,32 +118,22 @@ gst_sdlvideosink_class_init (GstSDLVideoSinkClass *klass)
parent_class = g_type_class_ref (GST_TYPE_ELEMENT); parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_WIDTH, g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_WIDTH,
g_param_spec_int("width","width","width", g_param_spec_int("width","Width","Width of the video window",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HEIGHT, g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HEIGHT,
g_param_spec_int("height","height","height", g_param_spec_int("height","Height","Height of the video window",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BRIGHTNESS,
g_param_spec_int("brightness","brightness","brightness", g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_XID,
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME g_param_spec_int ("xid", "Xid", "The Xid of the window",
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CONTRAST, G_MININT, G_MAXINT, 0, G_PARAM_WRITABLE));
g_param_spec_int("contrast","contrast","contrast",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FRAMES_DISPLAYED,
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_GAMMA, g_param_spec_int ("frames_displayed", "Frames Displayed", "The number of frames displayed so far",
g_param_spec_float("gamma","gamma","gamma", G_MININT,G_MAXINT, 0, G_PARAM_READABLE));
0.0,5.0,1.0,G_PARAM_READWRITE)); // CHECKME g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FRAME_TIME,
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_INVERSION, g_param_spec_int ("frame_time", "Frame time", "The interval between frames",
g_param_spec_boolean("inversion","inversion","inversion", G_MININT, G_MAXINT, 0, G_PARAM_READABLE));
TRUE,G_PARAM_READWRITE)); // CHECKME
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_RANDOMVAL,
g_param_spec_int("randomval","randomval","randomval",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FRAMES_DISPLAYED,
g_param_spec_int("frames_displayed","frames_displayed","frames_displayed",
G_MININT,G_MAXINT,0,G_PARAM_READABLE)); // CHECKME
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FRAME_TIME,
g_param_spec_int("frame_time","frame_time","frame_time",
G_MININT,G_MAXINT,0,G_PARAM_READABLE)); // CHECKME
gobject_class->set_property = gst_sdlvideosink_set_property; gobject_class->set_property = gst_sdlvideosink_set_property;
gobject_class->get_property = gst_sdlvideosink_get_property; gobject_class->get_property = gst_sdlvideosink_get_property;
@ -161,43 +152,119 @@ gst_sdlvideosink_class_init (GstSDLVideoSinkClass *klass)
gstelement_class->change_state = gst_sdlvideosink_change_state; gstelement_class->change_state = gst_sdlvideosink_change_state;
} }
static void static void
gst_sdlvideosink_newcaps (GstPad *pad, GstCaps *caps) 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_negotiate_function (sdlvideosink->sinkpad, gst_sdlvideosink_negotiate);
gst_pad_set_newcaps_function (sdlvideosink->sinkpad, gst_sdlvideosink_newcaps);
sdlvideosink->clock = gst_clock_get_system();
gst_clock_register(sdlvideosink->clock, GST_OBJECT(sdlvideosink));
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;
GST_FLAG_SET(sdlvideosink, GST_ELEMENT_THREAD_SUGGESTED);
}
static gulong
gst_sdlvideosink_get_sdl_from_fourcc (GstSDLVideoSink *sdlvideosink,
gulong code)
{
switch (code)
{
case GST_MAKE_FOURCC('I','4','2','0'):
case GST_MAKE_FOURCC('I','Y','U','V'):
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 (%4.4s)",
GULONG_FROM_LE(code), (char*)(&(GULONG_FROM_LE(code))));
return 0;
}
}
static void
gst_sdlvideosink_newcaps (GstPad *pad,
GstCaps *caps)
{ {
GstSDLVideoSink *sdlvideosink; GstSDLVideoSink *sdlvideosink;
gulong print_format; gulong print_format;
gulong format;
sdlvideosink = GST_SDLVIDEOSINK (gst_pad_get_parent (pad)); sdlvideosink = GST_SDLVIDEOSINK (gst_pad_get_parent (pad));
sdlvideosink->width = gst_caps_get_int (caps, "width"); sdlvideosink->format = gst_caps_get_fourcc_int (caps, "format");
sdlvideosink->height = gst_caps_get_int (caps, "height"); sdlvideosink->image_width = gst_caps_get_int (caps, "width");
sdlvideosink->image_height = gst_caps_get_int (caps, "height");
if (sdlvideosink->window_height <= 0)
sdlvideosink->window_height = sdlvideosink->image_height;
if (sdlvideosink->window_width <= 0)
sdlvideosink->window_width = sdlvideosink->image_width;
print_format = GULONG_FROM_LE (sdlvideosink->format); print_format = GULONG_FROM_LE (sdlvideosink->format);
sdlvideosink->screen = SDL_SetVideoMode(sdlvideosink->width, sdlvideosink->height, /* create a SDL window of the size requested by the user */
0, SDL_SWSURFACE); sdlvideosink->screen = SDL_SetVideoMode(sdlvideosink->window_width,
if ( sdlvideosink->screen == NULL /* || sdlvideosink->buffer == NULL */) { sdlvideosink->window_height, 0, SDL_SWSURFACE);
GST_ERROR(0, "SDL: Couldn't set %dx%d: %s", sdlvideosink->width, if ( sdlvideosink->screen == NULL)
sdlvideosink->height, SDL_GetError()); {
printf("error\n"); gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: Couldn't set %dx%d: %s", sdlvideosink->window_width,
sdlvideosink->window_height, SDL_GetError());
return; return;
} }
else { else
GST_DEBUG(0, "SDL: Set %dx%d @ %d bpp\n", sdlvideosink->width, {
sdlvideosink->height, sdlvideosink->screen->format->BitsPerPixel); gst_element_info(GST_ELEMENT(sdlvideosink),
"SDL: Set %dx%d @ %d bpp",
sdlvideosink->window_width, sdlvideosink->window_height,
sdlvideosink->screen->format->BitsPerPixel);
} }
sdlvideosink->yuv_overlay = SDL_CreateYUVOverlay(sdlvideosink->width, sdlvideosink->height, /* get SDL code */
SDL_IYUV_OVERLAY, sdlvideosink->screen); format = gst_sdlvideosink_get_sdl_from_fourcc(sdlvideosink, sdlvideosink->format);
if ( sdlvideosink->yuv_overlay == NULL ) {
GST_ERROR(0, "SDL: Couldn't create SDL_yuv_overlay: %s\n", SDL_GetError()); /* 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, format, sdlvideosink->screen);
if ( sdlvideosink->yuv_overlay == NULL )
{
gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: Couldn't create SDL_yuv_overlay: %s", SDL_GetError());
return; return;
} }
sdlvideosink->rect.x = 0; sdlvideosink->rect.x = 0;
sdlvideosink->rect.y = 0; sdlvideosink->rect.y = 0;
sdlvideosink->rect.w = sdlvideosink->width; sdlvideosink->rect.w = sdlvideosink->window_width;
sdlvideosink->rect.h = sdlvideosink->height; sdlvideosink->rect.h = sdlvideosink->window_height;
SDL_DisplayYUVOverlay(sdlvideosink->yuv_overlay, &(sdlvideosink->rect)); SDL_DisplayYUVOverlay(sdlvideosink->yuv_overlay, &(sdlvideosink->rect));
/* make stupid SDL *not* react on SIGINT */ /* make stupid SDL *not* react on SIGINT */
@ -205,28 +272,56 @@ gst_sdlvideosink_newcaps (GstPad *pad, GstCaps *caps)
GST_DEBUG (0, "sdlvideosink: setting %08lx (%4.4s)\n", sdlvideosink->format, (gchar*)&print_format); GST_DEBUG (0, "sdlvideosink: setting %08lx (%4.4s)\n", sdlvideosink->format, (gchar*)&print_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, g_signal_emit (G_OBJECT (sdlvideosink), gst_sdlvideosink_signals[SIGNAL_HAVE_SIZE], 0,
sdlvideosink->width, sdlvideosink->height); sdlvideosink->window_width, sdlvideosink->window_height);
} }
static void
gst_sdlvideosink_init (GstSDLVideoSink *sdlvideosink) static GstPadNegotiateReturn
gst_sdlvideosink_negotiate (GstPad *pad, GstCaps **caps, gpointer *data)
{ {
sdlvideosink->sinkpad = gst_pad_new_from_template ( GstSDLVideoSink *sdlvideosink;
GST_PADTEMPLATE_GET (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_newcaps_function (sdlvideosink->sinkpad, gst_sdlvideosink_newcaps);
sdlvideosink->clock = gst_clock_get_system(); GST_DEBUG (0, "sdlvideosink: negotiate %p %p\n", data, *data);
gst_clock_register(sdlvideosink->clock, GST_OBJECT(sdlvideosink));
sdlvideosink->width = -1; sdlvideosink = GST_SDLVIDEOSINK (gst_pad_get_parent (pad));
sdlvideosink->height = -1;
GST_FLAG_SET(sdlvideosink, GST_ELEMENT_THREAD_SUGGESTED); if (*caps == NULL)
{
/* provide our own */
*caps = sdlvideosink->capslist;
if (*caps != NULL)
{
sdlvideosink->capslist = sdlvideosink->capslist->next;
return GST_PAD_NEGOTIATE_TRY;
}
else
{
GST_DEBUG(0, "Out of caps\n");
}
}
else
{
/* check whether it's in any way compatible */
switch (gst_caps_get_fourcc_int(*caps, "format"))
{
case GST_MAKE_FOURCC('I','4','2','0'):
case GST_MAKE_FOURCC('I','Y','U','V'):
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'):
return GST_PAD_NEGOTIATE_AGREE;
}
}
/* if we got here - it's not good */
return GST_PAD_NEGOTIATE_FAIL;
} }
static void static void
gst_sdlvideosink_chain (GstPad *pad, GstBuffer *buf) gst_sdlvideosink_chain (GstPad *pad, GstBuffer *buf)
{ {
@ -253,30 +348,49 @@ gst_sdlvideosink_chain (GstPad *pad, GstBuffer *buf)
} }
/* Lock SDL/yuv-overlay */ /* Lock SDL/yuv-overlay */
if ( SDL_LockSurface(sdlvideosink->screen) < 0 ) { if (SDL_MUSTLOCK(sdlvideosink->screen))
GST_ERROR(0, "SDL_LockSurface(sdlvideosink->screen) < 0"); {
return; if (SDL_LockSurface(sdlvideosink->screen) < 0)
{
gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: couldn\'t lock the SDL video window: %s", SDL_GetError());
return;
}
} }
if (SDL_LockYUVOverlay(sdlvideosink->yuv_overlay) < 0) { if (SDL_LockYUVOverlay(sdlvideosink->yuv_overlay) < 0)
GST_ERROR(0, "SDL_LockYUVOverlay(sdlvideosink->yuv_overlay) < 0"); {
gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: couldn\'t lock the SDL YUV overlat: %s", SDL_GetError());
return; return;
} }
/* buf->yuv */ /* buf->yuv */
sdlvideosink->yuv[0] = GST_BUFFER_DATA(buf); if (sdlvideosink->format == GST_MAKE_FOURCC('I','4','2','0') ||
sdlvideosink->yuv[1] = sdlvideosink->yuv[0] + sdlvideosink->width*sdlvideosink->height; sdlvideosink->format == GST_MAKE_FOURCC('Y','V','1','2') ||
sdlvideosink->yuv[2] = sdlvideosink->yuv[1] + sdlvideosink->width*sdlvideosink->height/4; sdlvideosink->format == GST_MAKE_FOURCC('I','Y','U','V'))
{
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) */ /* let's draw the data (*yuv[3]) on a SDL screen (*buffer) */
sdlvideosink->yuv_overlay->pixels = sdlvideosink->yuv; sdlvideosink->yuv_overlay->pixels = sdlvideosink->yuv;
/* Unlock SDL_yuv_overlay */ /* Unlock SDL_yuv_overlay */
SDL_UnlockYUVOverlay(sdlvideosink->yuv_overlay); SDL_UnlockYUVOverlay(sdlvideosink->yuv_overlay);
SDL_UnlockSurface(sdlvideosink->screen); if (SDL_MUSTLOCK(sdlvideosink->screen))
SDL_UnlockSurface(sdlvideosink->screen);
/* Show, baby, show! */ /* Show, baby, show! */
SDL_DisplayYUVOverlay(sdlvideosink->yuv_overlay, &(sdlvideosink->rect)); SDL_DisplayYUVOverlay(sdlvideosink->yuv_overlay, &(sdlvideosink->rect));
SDL_UpdateRect(sdlvideosink->screen, 0, 0, sdlvideosink->width, sdlvideosink->height); 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); g_signal_emit(G_OBJECT(sdlvideosink),gst_sdlvideosink_signals[SIGNAL_FRAME_DISPLAYED],0);
@ -292,9 +406,23 @@ gst_sdlvideosink_set_property (GObject *object, guint prop_id, const GValue *val
/* it's not null if we got it, but it might not be ours */ /* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_SDLVIDEOSINK (object)); g_return_if_fail (GST_IS_SDLVIDEOSINK (object));
switch (prop_id)
{
case ARG_WIDTH:
sdlvideosink->window_width = g_value_get_int(value);
break;
case ARG_HEIGHT:
sdlvideosink->window_height = g_value_get_int(value);
break;
case ARG_XID:
sdlvideosink->window_id = g_value_get_int(value);
break;
}
sdlvideosink = GST_SDLVIDEOSINK (object); sdlvideosink = GST_SDLVIDEOSINK (object);
} }
static void static void
gst_sdlvideosink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) gst_sdlvideosink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{ {
@ -304,60 +432,59 @@ gst_sdlvideosink_get_property (GObject *object, guint prop_id, GValue *value, GP
sdlvideosink = GST_SDLVIDEOSINK(object); sdlvideosink = GST_SDLVIDEOSINK(object);
switch (prop_id) { switch (prop_id) {
case ARG_FRAMES_DISPLAYED: { 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); g_value_set_int (value, sdlvideosink->frames_displayed);
break; break;
} case ARG_FRAME_TIME:
case ARG_FRAME_TIME: {
g_value_set_int (value, sdlvideosink->frame_time/1000000); g_value_set_int (value, sdlvideosink->frame_time/1000000);
break; break;
} default:
default: { /*G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);*/
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break; break;
}
} }
} }
static gboolean
gst_sdlvideosink_open (GstSDLVideoSink *sdlvideosink)
{
g_return_val_if_fail (!GST_FLAG_IS_SET (sdlvideosink ,GST_SDLVIDEOSINK_OPEN), FALSE);
/* Initialize the SDL library */
if( SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0 ) {
GST_ERROR(0, "Couldn't initialize SDL: %s\n", SDL_GetError());
return FALSE;
}
GST_FLAG_SET (sdlvideosink, GST_SDLVIDEOSINK_OPEN);
return TRUE;
}
static void
gst_sdlvideosink_close (GstSDLVideoSink *sdlvideosink)
{
g_return_if_fail (GST_FLAG_IS_SET (sdlvideosink ,GST_SDLVIDEOSINK_OPEN));
SDL_FreeYUVOverlay(sdlvideosink->yuv_overlay);
SDL_Quit();
GST_FLAG_UNSET (sdlvideosink, GST_SDLVIDEOSINK_OPEN);
}
static GstElementStateReturn static GstElementStateReturn
gst_sdlvideosink_change_state (GstElement *element) gst_sdlvideosink_change_state (GstElement *element)
{ {
GstSDLVideoSink *sdlvideosink;
g_return_val_if_fail (GST_IS_SDLVIDEOSINK (element), GST_STATE_FAILURE); g_return_val_if_fail (GST_IS_SDLVIDEOSINK (element), GST_STATE_FAILURE);
sdlvideosink = GST_SDLVIDEOSINK(element);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) { switch (GST_STATE_TRANSITION (element))
if (GST_FLAG_IS_SET (element, GST_SDLVIDEOSINK_OPEN)) {
gst_sdlvideosink_close (GST_SDLVIDEOSINK (element)); case GST_STATE_NULL_TO_READY:
} else { /* Initialize the SDL library */
if (!GST_FLAG_IS_SET (element, GST_SDLVIDEOSINK_OPEN)) { if (sdlvideosink->window_id < 0)
if (!gst_sdlvideosink_open (GST_SDLVIDEOSINK (element))) unsetenv("SDL_WINDOWID");
else
{
char SDL_hack[32];
sprintf(SDL_hack, "%ld", 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; 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) if (GST_ELEMENT_CLASS (parent_class)->change_state)
@ -366,24 +493,54 @@ gst_sdlvideosink_change_state (GstElement *element)
return GST_STATE_SUCCESS; return GST_STATE_SUCCESS;
} }
static gboolean static gboolean
plugin_init (GModule *module, GstPlugin *plugin) plugin_init (GModule *module, GstPlugin *plugin)
{ {
GstElementFactory *factory; GstElementFactory *factory;
GstCaps *caps;
gint i;
gulong format[6] = { GST_MAKE_FOURCC('I','4','2','0'),
GST_MAKE_FOURCC('I','Y','U','V'),
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 */ /* create an elementfactory for the sdlvideosink element */
factory = gst_elementfactory_new("sdlvideosink",GST_TYPE_SDLVIDEOSINK, factory = gst_elementfactory_new("sdlvideosink",GST_TYPE_SDLVIDEOSINK,
&gst_sdlvideosink_details); &gst_sdlvideosink_details);
g_return_val_if_fail(factory != NULL, FALSE); g_return_val_if_fail(factory != NULL, FALSE);
gst_elementfactory_add_padtemplate (factory, /* make a list of all available caps */
GST_PADTEMPLATE_GET (sink_template)); for (i=0;i<6;i++)
{
caps = gst_caps_new ("sdlvideosink_caps",
"video/raw",
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),
NULL )
);
capslist = gst_caps_append(capslist, caps);
}
sink_template = gst_padtemplate_new (
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
capslist, NULL);
gst_elementfactory_add_padtemplate (factory, sink_template);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory)); gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE; return TRUE;
} }
GstPluginDesc plugin_desc = { GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR, GST_VERSION_MAJOR,
GST_VERSION_MINOR, GST_VERSION_MINOR,

6
ext/sdl/sdlvideosink.h
View file

@ -56,13 +56,17 @@ struct _GstSDLVideoSink {
GstPad *sinkpad; GstPad *sinkpad;
gulong format; gulong format;
gint width, height; gint window_width, window_height; /* the size of the SDL window */
gint image_width, image_height; /* the size of the incoming YUV stream */
gint window_id;
gint frames_displayed; gint frames_displayed;
guint64 frame_time; guint64 frame_time;
GstClock *clock; GstClock *clock;
GstCaps *capslist;
unsigned char *yuv[3]; unsigned char *yuv[3];
SDL_Surface *screen; SDL_Surface *screen;
SDL_Overlay *yuv_overlay; SDL_Overlay *yuv_overlay;