2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
25 #include "gstaasink.h"
27 static GstElementDetails gst_aasink_details = {
30 "An ASCII art videosink",
32 "Wim Taymans <wim.taymans@chello.be>",
36 /* aasink signals and args */
38 SIGNAL_FRAME_DISPLAYED,
59 GST_PADTEMPLATE_FACTORY (sink_template,
66 "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420"))
70 static void gst_aasink_class_init (GstAASinkClass *klass);
71 static void gst_aasink_init (GstAASink *aasink);
73 static void gst_aasink_chain (GstPad *pad, GstBuffer *buf);
75 static void gst_aasink_set_property (GObject *object, guint prop_id,
76 const GValue *value, GParamSpec *pspec);
77 static void gst_aasink_get_property (GObject *object, guint prop_id,
78 GValue *value, GParamSpec *pspec);
80 static GstElementStateReturn gst_aasink_change_state (GstElement *element);
82 static GstElementClass *parent_class = NULL;
83 static guint gst_aasink_signals[LAST_SIGNAL] = { 0 };
86 gst_aasink_get_type (void)
88 static GType aasink_type = 0;
91 static const GTypeInfo aasink_info = {
92 sizeof(GstAASinkClass),
95 (GClassInitFunc) gst_aasink_class_init,
100 (GInstanceInitFunc)gst_aasink_init,
102 aasink_type = g_type_register_static(GST_TYPE_ELEMENT, "GstAASink", &aasink_info, 0);
107 #define GST_TYPE_AADRIVERS (gst_aasink_drivers_get_type())
109 gst_aasink_drivers_get_type (void)
111 static GType driver_type = 0;
114 const struct aa_driver *driver;
117 driver = aa_drivers[i++];
119 driver = aa_drivers[i++];
122 drivers = g_new0(GEnumValue, i);
125 driver = aa_drivers[i];
127 drivers[i].value = i;
128 drivers[i].value_name = g_strdup (driver->shortname);
129 drivers[i].value_nick = g_strdup (driver->name);
131 driver = aa_drivers[i];
133 drivers[i].value = 0;
134 drivers[i].value_name = NULL;
135 drivers[i].value_nick = NULL;
137 driver_type = g_enum_register_static ("GstAASinkDrivers", drivers);
142 #define GST_TYPE_AADITHER (gst_aasink_dither_get_type())
144 gst_aasink_dither_get_type (void)
146 static GType dither_type = 0;
148 GEnumValue *ditherers;
151 while (aa_dithernames[i]) {
155 ditherers = g_new0(GEnumValue, i);
158 while (aa_dithernames[i]) {
159 ditherers[i].value = i;
160 ditherers[i].value_name = g_strdup (aa_dithernames[i]);
161 ditherers[i].value_nick = g_strdup (aa_dithernames[i]);
164 ditherers[i].value = 0;
165 ditherers[i].value_name = NULL;
166 ditherers[i].value_nick = NULL;
168 dither_type = g_enum_register_static ("GstAASinkDitherers", ditherers);
174 gst_aasink_class_init (GstAASinkClass *klass)
176 GObjectClass *gobject_class;
177 GstElementClass *gstelement_class;
179 gobject_class = (GObjectClass*)klass;
180 gstelement_class = (GstElementClass*)klass;
182 parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
184 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_WIDTH,
185 g_param_spec_int("width","width","width",
186 G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
187 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HEIGHT,
188 g_param_spec_int("height","height","height",
189 G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
190 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DRIVER,
191 g_param_spec_enum("driver","driver","driver",
192 GST_TYPE_AADRIVERS,0,G_PARAM_READWRITE)); /* CHECKME! */
193 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DITHER,
194 g_param_spec_enum("dither","dither","dither",
195 GST_TYPE_AADITHER,0,G_PARAM_READWRITE)); /* CHECKME! */
196 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BRIGHTNESS,
197 g_param_spec_int("brightness","brightness","brightness",
198 G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
199 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CONTRAST,
200 g_param_spec_int("contrast","contrast","contrast",
201 G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
202 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_GAMMA,
203 g_param_spec_float("gamma","gamma","gamma",
204 0.0,5.0,1.0,G_PARAM_READWRITE)); /* CHECKME */
205 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_INVERSION,
206 g_param_spec_boolean("inversion","inversion","inversion",
207 TRUE,G_PARAM_READWRITE)); /* CHECKME */
208 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_RANDOMVAL,
209 g_param_spec_int("randomval","randomval","randomval",
210 G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
211 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FRAMES_DISPLAYED,
212 g_param_spec_int("frames_displayed","frames_displayed","frames_displayed",
213 G_MININT,G_MAXINT,0,G_PARAM_READABLE)); /* CHECKME */
214 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FRAME_TIME,
215 g_param_spec_int("frame_time","frame_time","frame_time",
216 G_MININT,G_MAXINT,0,G_PARAM_READABLE)); /* CHECKME */
218 gobject_class->set_property = gst_aasink_set_property;
219 gobject_class->get_property = gst_aasink_get_property;
221 gst_aasink_signals[SIGNAL_FRAME_DISPLAYED] =
222 g_signal_new ("frame_displayed", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
223 G_STRUCT_OFFSET (GstAASinkClass, frame_displayed), NULL, NULL,
224 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
225 gst_aasink_signals[SIGNAL_HAVE_SIZE] =
226 g_signal_new ("have_size", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
227 G_STRUCT_OFFSET (GstAASinkClass, have_size), NULL, NULL,
228 gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2,
229 G_TYPE_UINT, G_TYPE_UINT);
231 gstelement_class->change_state = gst_aasink_change_state;
234 static GstPadConnectReturn
235 gst_aasink_sinkconnect (GstPad *pad, GstCaps *caps)
240 aasink = GST_AASINK (gst_pad_get_parent (pad));
242 if (!GST_CAPS_IS_FIXED (caps))
243 return GST_PAD_CONNECT_DELAYED;
245 aasink->width = gst_caps_get_int (caps, "width");
246 aasink->height = gst_caps_get_int (caps, "height");
248 print_format = GULONG_FROM_LE (aasink->format);
250 GST_DEBUG (0, "aasink: setting %08lx (%4.4s)\n", aasink->format, (gchar*)&print_format);
252 g_signal_emit( G_OBJECT (aasink), gst_aasink_signals[SIGNAL_HAVE_SIZE], 0,
253 aasink->width, aasink->height);
255 return GST_PAD_CONNECT_OK;
259 gst_aasink_set_clock (GstElement *element, GstClock *clock)
261 GstAASink *aasink = GST_AASINK (element);
263 aasink->clock = clock;
267 gst_aasink_init (GstAASink *aasink)
269 aasink->sinkpad = gst_pad_new_from_template (
270 GST_PADTEMPLATE_GET (sink_template), "sink");
271 gst_element_add_pad (GST_ELEMENT (aasink), aasink->sinkpad);
272 gst_pad_set_chain_function (aasink->sinkpad, gst_aasink_chain);
273 gst_pad_set_connect_function (aasink->sinkpad, gst_aasink_sinkconnect);
275 memcpy(&aasink->ascii_surf, &aa_defparams, sizeof (struct aa_hardware_params));
276 aasink->ascii_parms.bright = 0;
277 aasink->ascii_parms.contrast = 16;
278 aasink->ascii_parms.gamma = 1.0;
279 aasink->ascii_parms.dither = 0;
280 aasink->ascii_parms.inversion = 0;
281 aasink->ascii_parms.randomval = 0;
282 aasink->aa_driver = 0;
287 aasink->clock = NULL;
288 GST_ELEMENT (aasink)->setclockfunc = gst_aasink_set_clock;
290 GST_FLAG_SET(aasink, GST_ELEMENT_THREAD_SUGGESTED);
294 gst_aasink_scale (GstAASink *aasink, gchar *src, gchar *dest,
301 g_return_if_fail ((dw != 0) && (dh != 0));
304 yinc = (sh << 16) / dh;
305 xinc = (sw << 16) / dw;
307 for (y = dh; y; y--) {
308 while (ypos > 0x10000) {
314 guchar *destp = dest;
317 for ( x=dw; x; x-- ) {
318 while (xpos >= 0x10000L) {
332 gst_aasink_chain (GstPad *pad, GstBuffer *buf)
336 g_return_if_fail (pad != NULL);
337 g_return_if_fail (GST_IS_PAD (pad));
338 g_return_if_fail (buf != NULL);
340 aasink = GST_AASINK (gst_pad_get_parent (pad));
342 gst_aasink_scale (aasink,
343 GST_BUFFER_DATA (buf), /* src */
344 aa_image (aasink->context), /* dest */
345 aasink->width, /* sw */
346 aasink->height, /* sh */
347 aa_imgwidth (aasink->context), /* dw */
348 aa_imgheight (aasink->context)); /* dh */
350 GST_DEBUG (0,"videosink: clock wait: %llu\n", GST_BUFFER_TIMESTAMP(buf));
353 gst_element_clock_wait (GST_ELEMENT (aasink), aasink->clock, GST_BUFFER_TIMESTAMP(buf));
356 aa_render (aasink->context, &aasink->ascii_parms,
357 0, 0, aa_imgwidth (aasink->context), aa_imgheight (aasink->context));
358 aa_flush (aasink->context);
359 aa_getevent (aasink->context, FALSE);
361 g_signal_emit(G_OBJECT(aasink),gst_aasink_signals[SIGNAL_FRAME_DISPLAYED], 0);
363 gst_buffer_unref(buf);
368 gst_aasink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
372 /* it's not null if we got it, but it might not be ours */
373 g_return_if_fail (GST_IS_AASINK (object));
375 aasink = GST_AASINK (object);
379 aasink->ascii_surf.width = g_value_get_int (value);
382 aasink->ascii_surf.height = g_value_get_int (value);
385 aasink->aa_driver = g_value_get_enum (value);
389 aasink->ascii_parms.dither = g_value_get_enum (value);
392 case ARG_BRIGHTNESS: {
393 aasink->ascii_parms.bright = g_value_get_int (value);
397 aasink->ascii_parms.contrast = g_value_get_int (value);
401 aasink->ascii_parms.gamma = g_value_get_float (value);
404 case ARG_INVERSION: {
405 aasink->ascii_parms.inversion = g_value_get_boolean (value);
408 case ARG_RANDOMVAL: {
409 aasink->ascii_parms.randomval = g_value_get_int (value);
418 gst_aasink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
422 /* it's not null if we got it, but it might not be ours */
423 aasink = GST_AASINK(object);
427 g_value_set_int (value, aasink->ascii_surf.width);
431 g_value_set_int (value, aasink->ascii_surf.height);
435 g_value_set_enum (value, aasink->aa_driver);
439 g_value_set_enum (value, aasink->ascii_parms.dither);
442 case ARG_BRIGHTNESS: {
443 g_value_set_int (value, aasink->ascii_parms.bright);
447 g_value_set_int (value, aasink->ascii_parms.contrast);
451 g_value_set_float (value, aasink->ascii_parms.gamma);
454 case ARG_INVERSION: {
455 g_value_set_boolean (value, aasink->ascii_parms.inversion);
458 case ARG_RANDOMVAL: {
459 g_value_set_int (value, aasink->ascii_parms.randomval);
462 case ARG_FRAMES_DISPLAYED: {
463 g_value_set_int (value, aasink->frames_displayed);
466 case ARG_FRAME_TIME: {
467 g_value_set_int (value, aasink->frame_time/1000000);
471 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
478 gst_aasink_open (GstAASink *aasink)
480 g_return_val_if_fail (!GST_FLAG_IS_SET (aasink ,GST_AASINK_OPEN), FALSE);
482 aa_recommendhidisplay(aa_drivers[aasink->aa_driver]->shortname);
484 aasink->context = aa_autoinit (&aasink->ascii_surf);
485 if (aasink->context == NULL) {
486 gst_element_error (GST_ELEMENT (aasink),
487 g_strdup("opening aalib context"));
490 aa_autoinitkbd(aasink->context, 0);
491 aa_resizehandler(aasink->context, (void *)aa_resize);
493 GST_FLAG_SET (aasink, GST_AASINK_OPEN);
499 gst_aasink_close (GstAASink *aasink)
501 g_return_if_fail (GST_FLAG_IS_SET (aasink ,GST_AASINK_OPEN));
503 aa_close (aasink->context);
505 GST_FLAG_UNSET (aasink, GST_AASINK_OPEN);
508 static GstElementStateReturn
509 gst_aasink_change_state (GstElement *element)
511 g_return_val_if_fail (GST_IS_AASINK (element), GST_STATE_FAILURE);
513 if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
514 if (GST_FLAG_IS_SET (element, GST_AASINK_OPEN))
515 gst_aasink_close (GST_AASINK (element));
517 if (!GST_FLAG_IS_SET (element, GST_AASINK_OPEN)) {
518 if (!gst_aasink_open (GST_AASINK (element)))
519 return GST_STATE_FAILURE;
523 if (GST_ELEMENT_CLASS (parent_class)->change_state)
524 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
526 return GST_STATE_SUCCESS;
530 plugin_init (GModule *module, GstPlugin *plugin)
532 GstElementFactory *factory;
534 /* create an elementfactory for the aasink element */
535 factory = gst_elementfactory_new("aasink",GST_TYPE_AASINK,
536 &gst_aasink_details);
537 g_return_val_if_fail(factory != NULL, FALSE);
539 gst_elementfactory_add_padtemplate (factory,
540 GST_PADTEMPLATE_GET (sink_template));
542 gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
547 GstPluginDesc plugin_desc = {