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.
27 #include "gstaasink.h"
28 #include <gst/video/video.h>
30 /* elementfactory information */
31 static GstElementDetails gst_aasink_details = {
34 "An ASCII art videosink",
35 "Wim Taymans <wim.taymans@chello.be>"
38 /* aasink signals and args */
41 SIGNAL_FRAME_DISPLAYED,
63 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
66 GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
69 static void gst_aasink_base_init (gpointer g_class);
70 static void gst_aasink_class_init (GstAASinkClass * klass);
71 static void gst_aasink_init (GstAASink * aasink);
73 static void gst_aasink_set_clock (GstElement * element, GstClock * clock);
74 static void gst_aasink_chain (GstPad * pad, GstData * _data);
76 static void gst_aasink_set_property (GObject * object, guint prop_id,
77 const GValue * value, GParamSpec * pspec);
78 static void gst_aasink_get_property (GObject * object, guint prop_id,
79 GValue * value, GParamSpec * pspec);
81 static GstElementStateReturn gst_aasink_change_state (GstElement * element);
83 static GstElementClass *parent_class = NULL;
84 static guint gst_aasink_signals[LAST_SIGNAL] = { 0 };
87 gst_aasink_get_type (void)
89 static GType aasink_type = 0;
92 static const GTypeInfo aasink_info = {
93 sizeof (GstAASinkClass),
96 (GClassInitFunc) gst_aasink_class_init,
101 (GInstanceInitFunc) gst_aasink_init,
104 g_type_register_static (GST_TYPE_ELEMENT, "GstAASink", &aasink_info, 0);
109 #define GST_TYPE_AADRIVERS (gst_aasink_drivers_get_type())
111 gst_aasink_drivers_get_type (void)
113 static GType driver_type = 0;
117 const struct aa_driver *driver;
121 for (n_drivers = 0; aa_drivers[n_drivers]; n_drivers++) {
122 /* count number of drivers */
125 drivers = g_new0 (GEnumValue, n_drivers + 1);
127 for (i = 0; i < n_drivers; i++) {
128 driver = aa_drivers[i];
129 drivers[i].value = i;
130 drivers[i].value_name = g_strdup (driver->shortname);
131 drivers[i].value_nick = g_strdup (driver->name);
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;
149 GEnumValue *ditherers;
153 for (n_ditherers = 0; aa_dithernames[n_ditherers]; n_ditherers++) {
154 /* count number of ditherers */
157 ditherers = g_new0 (GEnumValue, n_ditherers + 1);
159 for (i = 0; i < n_ditherers; i++) {
160 ditherers[i].value = i;
161 ditherers[i].value_name = g_strdup (aa_dithernames[i]);
162 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_base_init (gpointer g_class)
176 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
178 gst_element_class_add_pad_template (element_class,
179 gst_static_pad_template_get (&sink_template));
180 gst_element_class_set_details (element_class, &gst_aasink_details);
184 gst_aasink_class_init (GstAASinkClass * klass)
186 GObjectClass *gobject_class;
187 GstElementClass *gstelement_class;
189 gobject_class = (GObjectClass *) klass;
190 gstelement_class = (GstElementClass *) klass;
192 parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
194 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 */
195 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 */
196 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DRIVER, g_param_spec_enum ("driver", "driver", "driver", GST_TYPE_AADRIVERS, 0, G_PARAM_READWRITE)); /* CHECKME! */
197 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DITHER, g_param_spec_enum ("dither", "dither", "dither", GST_TYPE_AADITHER, 0, G_PARAM_READWRITE)); /* CHECKME! */
198 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 */
199 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 */
200 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 */
201 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_INVERSION, g_param_spec_boolean ("inversion", "inversion", "inversion", TRUE, G_PARAM_READWRITE)); /* CHECKME */
202 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 */
203 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 */
204 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 */
206 gobject_class->set_property = gst_aasink_set_property;
207 gobject_class->get_property = gst_aasink_get_property;
209 gst_aasink_signals[SIGNAL_FRAME_DISPLAYED] =
210 g_signal_new ("frame-displayed", G_TYPE_FROM_CLASS (klass),
211 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstAASinkClass, frame_displayed),
212 NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
213 gst_aasink_signals[SIGNAL_HAVE_SIZE] =
214 g_signal_new ("have-size", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
215 G_STRUCT_OFFSET (GstAASinkClass, have_size), NULL, NULL,
216 gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
218 gstelement_class->change_state = gst_aasink_change_state;
219 gstelement_class->set_clock = gst_aasink_set_clock;
223 gst_aasink_fixate (GstPad * pad, const GstCaps * caps)
225 GstStructure *structure;
228 if (gst_caps_get_size (caps) > 1)
231 newcaps = gst_caps_copy (caps);
232 structure = gst_caps_get_structure (newcaps, 0);
234 if (gst_caps_structure_fixate_field_nearest_int (structure, "width", 320)) {
237 if (gst_caps_structure_fixate_field_nearest_int (structure, "height", 240)) {
240 if (gst_caps_structure_fixate_field_nearest_double (structure, "framerate",
245 gst_caps_free (newcaps);
249 static GstPadLinkReturn
250 gst_aasink_sinkconnect (GstPad * pad, const GstCaps * caps)
253 GstStructure *structure;
255 aasink = GST_AASINK (gst_pad_get_parent (pad));
257 structure = gst_caps_get_structure (caps, 0);
258 gst_structure_get_int (structure, "width", &aasink->width);
259 gst_structure_get_int (structure, "height", &aasink->height);
261 /* FIXME aasink->format is never set */
263 GST_DEBUG ("aasink: setting %08lx (" GST_FOURCC_FORMAT ")",
264 aasink->format, GST_FOURCC_ARGS (aasink->format));
266 g_signal_emit (G_OBJECT (aasink), gst_aasink_signals[SIGNAL_HAVE_SIZE], 0,
267 aasink->width, aasink->height);
269 return GST_PAD_LINK_OK;
273 gst_aasink_set_clock (GstElement * element, GstClock * clock)
275 GstAASink *aasink = GST_AASINK (element);
277 aasink->clock = clock;
281 gst_aasink_init (GstAASink * aasink)
284 gst_pad_new_from_template (gst_element_get_pad_template (GST_ELEMENT
285 (aasink), "sink"), "sink");
286 gst_element_add_pad (GST_ELEMENT (aasink), aasink->sinkpad);
287 gst_pad_set_chain_function (aasink->sinkpad, gst_aasink_chain);
288 gst_pad_set_link_function (aasink->sinkpad, gst_aasink_sinkconnect);
289 gst_pad_set_fixate_function (aasink->sinkpad, gst_aasink_fixate);
291 memcpy (&aasink->ascii_surf, &aa_defparams,
292 sizeof (struct aa_hardware_params));
293 aasink->ascii_parms.bright = 0;
294 aasink->ascii_parms.contrast = 16;
295 aasink->ascii_parms.gamma = 1.0;
296 aasink->ascii_parms.dither = 0;
297 aasink->ascii_parms.inversion = 0;
298 aasink->ascii_parms.randomval = 0;
299 aasink->aa_driver = 0;
304 aasink->clock = NULL;
306 GST_FLAG_SET (aasink, GST_ELEMENT_THREAD_SUGGESTED);
310 gst_aasink_scale (GstAASink * aasink, gchar * src, gchar * dest,
311 gint sw, gint sh, gint dw, gint dh)
316 g_return_if_fail ((dw != 0) && (dh != 0));
319 yinc = (sh << 16) / dh;
320 xinc = (sw << 16) / dw;
322 for (y = dh; y; y--) {
323 while (ypos > 0x10000) {
329 guchar *destp = dest;
332 for (x = dw; x; x--) {
333 while (xpos >= 0x10000L) {
347 gst_aasink_chain (GstPad * pad, GstData * _data)
349 GstBuffer *buf = GST_BUFFER (_data);
352 g_return_if_fail (pad != NULL);
353 g_return_if_fail (GST_IS_PAD (pad));
354 g_return_if_fail (buf != NULL);
356 aasink = GST_AASINK (gst_pad_get_parent (pad));
358 gst_aasink_scale (aasink, GST_BUFFER_DATA (buf), /* src */
359 aa_image (aasink->context), /* dest */
360 aasink->width, /* sw */
361 aasink->height, /* sh */
362 aa_imgwidth (aasink->context), /* dw */
363 aa_imgheight (aasink->context)); /* dh */
365 GST_DEBUG ("videosink: clock wait: %" G_GUINT64_FORMAT,
366 GST_BUFFER_TIMESTAMP (buf));
368 if (aasink->clock && GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
369 gst_element_wait (GST_ELEMENT (aasink), GST_BUFFER_TIMESTAMP (buf));
372 aa_render (aasink->context, &aasink->ascii_parms,
373 0, 0, aa_imgwidth (aasink->context), aa_imgheight (aasink->context));
374 aa_flush (aasink->context);
375 aa_getevent (aasink->context, FALSE);
377 g_signal_emit (G_OBJECT (aasink), gst_aasink_signals[SIGNAL_FRAME_DISPLAYED],
380 gst_buffer_unref (buf);
385 gst_aasink_set_property (GObject * object, guint prop_id, const GValue * value,
390 /* it's not null if we got it, but it might not be ours */
391 g_return_if_fail (GST_IS_AASINK (object));
393 aasink = GST_AASINK (object);
397 aasink->ascii_surf.width = g_value_get_int (value);
400 aasink->ascii_surf.height = g_value_get_int (value);
403 aasink->aa_driver = g_value_get_enum (value);
407 aasink->ascii_parms.dither = g_value_get_enum (value);
410 case ARG_BRIGHTNESS:{
411 aasink->ascii_parms.bright = g_value_get_int (value);
415 aasink->ascii_parms.contrast = g_value_get_int (value);
419 aasink->ascii_parms.gamma = g_value_get_float (value);
423 aasink->ascii_parms.inversion = g_value_get_boolean (value);
427 aasink->ascii_parms.randomval = g_value_get_int (value);
436 gst_aasink_get_property (GObject * object, guint prop_id, GValue * value,
441 /* it's not null if we got it, but it might not be ours */
442 aasink = GST_AASINK (object);
446 g_value_set_int (value, aasink->ascii_surf.width);
450 g_value_set_int (value, aasink->ascii_surf.height);
454 g_value_set_enum (value, aasink->aa_driver);
458 g_value_set_enum (value, aasink->ascii_parms.dither);
461 case ARG_BRIGHTNESS:{
462 g_value_set_int (value, aasink->ascii_parms.bright);
466 g_value_set_int (value, aasink->ascii_parms.contrast);
470 g_value_set_float (value, aasink->ascii_parms.gamma);
474 g_value_set_boolean (value, aasink->ascii_parms.inversion);
478 g_value_set_int (value, aasink->ascii_parms.randomval);
481 case ARG_FRAMES_DISPLAYED:{
482 g_value_set_int (value, aasink->frames_displayed);
485 case ARG_FRAME_TIME:{
486 g_value_set_int (value, aasink->frame_time / 1000000);
490 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
497 gst_aasink_open (GstAASink * aasink)
499 g_return_val_if_fail (!GST_FLAG_IS_SET (aasink, GST_AASINK_OPEN), FALSE);
501 aa_recommendhidisplay (aa_drivers[aasink->aa_driver]->shortname);
503 aasink->context = aa_autoinit (&aasink->ascii_surf);
504 if (aasink->context == NULL) {
505 GST_ELEMENT_ERROR (GST_ELEMENT (aasink), LIBRARY, TOO_LAZY, (NULL),
506 ("error opening aalib context"));
509 aa_autoinitkbd (aasink->context, 0);
510 aa_resizehandler (aasink->context, (void *) aa_resize);
512 GST_FLAG_SET (aasink, GST_AASINK_OPEN);
518 gst_aasink_close (GstAASink * aasink)
520 g_return_if_fail (GST_FLAG_IS_SET (aasink, GST_AASINK_OPEN));
522 aa_close (aasink->context);
524 GST_FLAG_UNSET (aasink, GST_AASINK_OPEN);
527 static GstElementStateReturn
528 gst_aasink_change_state (GstElement * element)
530 g_return_val_if_fail (GST_IS_AASINK (element), GST_STATE_FAILURE);
532 if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
533 if (GST_FLAG_IS_SET (element, GST_AASINK_OPEN))
534 gst_aasink_close (GST_AASINK (element));
536 if (!GST_FLAG_IS_SET (element, GST_AASINK_OPEN)) {
537 if (!gst_aasink_open (GST_AASINK (element)))
538 return GST_STATE_FAILURE;
542 if (GST_ELEMENT_CLASS (parent_class)->change_state)
543 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
545 return GST_STATE_SUCCESS;
549 plugin_init (GstPlugin * plugin)
551 if (!gst_element_register (plugin, "aasink", GST_RANK_NONE, GST_TYPE_AASINK))
557 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
560 "ASCII Art video sink",
561 plugin_init, VERSION, "GPL", GST_PACKAGE, GST_ORIGIN)