/* GStreamer SDL plugin * Copyright (C) 2001 Ronald Bultje * * 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 ;-) */ #include #include #include #include #include "sdlvideosink.h" static GstElementDetails gst_sdlvideosink_details = { "Video sink", "Sink/Video", "An SDL-based videosink", VERSION, "Ronald Bultje ", "(C) 2001", }; /* sdlvideosink signals and args */ enum { SIGNAL_FRAME_DISPLAYED, SIGNAL_HAVE_SIZE, LAST_SIGNAL }; enum { ARG_0, ARG_WIDTH, ARG_HEIGHT, ARG_DRIVER, ARG_DITHER, ARG_BRIGHTNESS, ARG_CONTRAST, ARG_GAMMA, ARG_INVERSION, ARG_RANDOMVAL, ARG_FRAMES_DISPLAYED, 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_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 void gst_sdlvideosink_close (GstSDLVideoSink *sdlvideosink); static GstElementStateReturn gst_sdlvideosink_change_state (GstElement *element); 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", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HEIGHT, g_param_spec_int("height","height","height", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BRIGHTNESS, g_param_spec_int("brightness","brightness","brightness", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CONTRAST, 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_GAMMA, g_param_spec_float("gamma","gamma","gamma", 0.0,5.0,1.0,G_PARAM_READWRITE)); // CHECKME g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_INVERSION, g_param_spec_boolean("inversion","inversion","inversion", 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->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; } static void gst_sdlvideosink_newcaps (GstPad *pad, GstCaps *caps) { GstSDLVideoSink *sdlvideosink; gulong print_format; sdlvideosink = GST_SDLVIDEOSINK (gst_pad_get_parent (pad)); sdlvideosink->width = gst_caps_get_int (caps, "width"); sdlvideosink->height = gst_caps_get_int (caps, "height"); print_format = GULONG_FROM_LE (sdlvideosink->format); sdlvideosink->screen = SDL_SetVideoMode(sdlvideosink->width, sdlvideosink->height, 0, SDL_SWSURFACE); if ( sdlvideosink->screen == NULL /* || sdlvideosink->buffer == NULL */) { GST_ERROR(0, "SDL: Couldn't set %dx%d: %s", sdlvideosink->width, sdlvideosink->height, SDL_GetError()); printf("error\n"); return; } else { GST_DEBUG(0, "SDL: Set %dx%d @ %d bpp\n", sdlvideosink->width, sdlvideosink->height, sdlvideosink->screen->format->BitsPerPixel); } sdlvideosink->yuv_overlay = SDL_CreateYUVOverlay(sdlvideosink->width, sdlvideosink->height, SDL_IYUV_OVERLAY, sdlvideosink->screen); if ( sdlvideosink->yuv_overlay == NULL ) { GST_ERROR(0, "SDL: Couldn't create SDL_yuv_overlay: %s\n", SDL_GetError()); return; } sdlvideosink->rect.x = 0; sdlvideosink->rect.y = 0; sdlvideosink->rect.w = sdlvideosink->width; sdlvideosink->rect.h = sdlvideosink->height; SDL_DisplayYUVOverlay(sdlvideosink->yuv_overlay, &(sdlvideosink->rect)); /* make stupid SDL *not* react on SIGINT */ signal(SIGINT, SIG_DFL); GST_DEBUG (0, "sdlvideosink: setting %08lx (%4.4s)\n", sdlvideosink->format, (gchar*)&print_format); g_signal_emit (G_OBJECT (sdlvideosink), gst_sdlvideosink_signals[SIGNAL_HAVE_SIZE], 0, sdlvideosink->width, sdlvideosink->height); } static void gst_sdlvideosink_init (GstSDLVideoSink *sdlvideosink) { sdlvideosink->sinkpad = gst_pad_new_from_template ( 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_clock_register(sdlvideosink->clock, GST_OBJECT(sdlvideosink)); sdlvideosink->width = -1; sdlvideosink->height = -1; GST_FLAG_SET(sdlvideosink, GST_ELEMENT_THREAD_SUGGESTED); } static void gst_sdlvideosink_chain (GstPad *pad, GstBuffer *buf) { GstSDLVideoSink *sdlvideosink; GstClockTimeDiff jitter; 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)); GST_DEBUG (0,"videosink: clock wait: %llu\n", GST_BUFFER_TIMESTAMP(buf)); jitter = gst_clock_current_diff(sdlvideosink->clock, GST_BUFFER_TIMESTAMP (buf)); if (jitter > 500000 || jitter < -500000) { GST_DEBUG (0, "jitter: %lld\n", jitter); gst_clock_set (sdlvideosink->clock, GST_BUFFER_TIMESTAMP (buf)); } else { gst_clock_wait(sdlvideosink->clock, GST_BUFFER_TIMESTAMP(buf), GST_OBJECT(sdlvideosink)); } /* Lock SDL/yuv-overlay */ if ( SDL_LockSurface(sdlvideosink->screen) < 0 ) { GST_ERROR(0, "SDL_LockSurface(sdlvideosink->screen) < 0"); return; } if (SDL_LockYUVOverlay(sdlvideosink->yuv_overlay) < 0) { GST_ERROR(0, "SDL_LockYUVOverlay(sdlvideosink->yuv_overlay) < 0"); return; } /* buf->yuv */ sdlvideosink->yuv[0] = GST_BUFFER_DATA(buf); sdlvideosink->yuv[1] = sdlvideosink->yuv[0] + sdlvideosink->width*sdlvideosink->height; sdlvideosink->yuv[2] = sdlvideosink->yuv[1] + sdlvideosink->width*sdlvideosink->height/4; /* let's draw the data (*yuv[3]) on a SDL screen (*buffer) */ sdlvideosink->yuv_overlay->pixels = sdlvideosink->yuv; /* Unlock SDL_yuv_overlay */ SDL_UnlockYUVOverlay(sdlvideosink->yuv_overlay); SDL_UnlockSurface(sdlvideosink->screen); /* Show, baby, show! */ SDL_DisplayYUVOverlay(sdlvideosink->yuv_overlay, &(sdlvideosink->rect)); SDL_UpdateRect(sdlvideosink->screen, 0, 0, sdlvideosink->width, sdlvideosink->height); 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); } 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 */ sdlvideosink = GST_SDLVIDEOSINK(object); switch (prop_id) { 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 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 gst_sdlvideosink_change_state (GstElement *element) { g_return_val_if_fail (GST_IS_SDLVIDEOSINK (element), GST_STATE_FAILURE); if (GST_STATE_PENDING (element) == GST_STATE_NULL) { if (GST_FLAG_IS_SET (element, GST_SDLVIDEOSINK_OPEN)) gst_sdlvideosink_close (GST_SDLVIDEOSINK (element)); } else { if (!GST_FLAG_IS_SET (element, GST_SDLVIDEOSINK_OPEN)) { if (!gst_sdlvideosink_open (GST_SDLVIDEOSINK (element))) return GST_STATE_FAILURE; } } 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; /* create an elementfactory for the sdlvideosink element */ factory = gst_elementfactory_new("sdlvideosink",GST_TYPE_SDLVIDEOSINK, &gst_sdlvideosink_details); g_return_val_if_fail(factory != NULL, FALSE); gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (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 };