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 gboolean gst_aasink_setcaps (GstBaseSink * pad, GstCaps * caps);
74 static void gst_aasink_get_times (GstBaseSink * sink, GstBuffer * buffer,
75 GstClockTime * start, GstClockTime * end);
76 static GstFlowReturn gst_aasink_render (GstBaseSink * basesink,
79 static void gst_aasink_set_property (GObject * object, guint prop_id,
80 const GValue * value, GParamSpec * pspec);
81 static void gst_aasink_get_property (GObject * object, guint prop_id,
82 GValue * value, GParamSpec * pspec);
84 static GstStateChangeReturn gst_aasink_change_state (GstElement * element,
85 GstStateChange transition);
87 static GstElementClass *parent_class = NULL;
88 static guint gst_aasink_signals[LAST_SIGNAL] = { 0 };
91 gst_aasink_get_type (void)
93 static GType aasink_type = 0;
96 static const GTypeInfo aasink_info = {
97 sizeof (GstAASinkClass),
100 (GClassInitFunc) gst_aasink_class_init,
105 (GInstanceInitFunc) gst_aasink_init,
109 g_type_register_static (GST_TYPE_BASE_SINK, "GstAASink", &aasink_info,
115 #define GST_TYPE_AADRIVERS (gst_aasink_drivers_get_type())
117 gst_aasink_drivers_get_type (void)
119 static GType driver_type = 0;
123 const struct aa_driver *driver;
127 for (n_drivers = 0; aa_drivers[n_drivers]; n_drivers++) {
128 /* count number of drivers */
131 drivers = g_new0 (GEnumValue, n_drivers + 1);
133 for (i = 0; i < n_drivers; i++) {
134 driver = aa_drivers[i];
135 drivers[i].value = i;
136 drivers[i].value_name = g_strdup (driver->name);
137 drivers[i].value_nick = g_utf8_strdown (driver->shortname, -1);
139 drivers[i].value = 0;
140 drivers[i].value_name = NULL;
141 drivers[i].value_nick = NULL;
143 driver_type = g_enum_register_static ("GstAASinkDrivers", drivers);
148 #define GST_TYPE_AADITHER (gst_aasink_dither_get_type())
150 gst_aasink_dither_get_type (void)
152 static GType dither_type = 0;
155 GEnumValue *ditherers;
159 for (n_ditherers = 0; aa_dithernames[n_ditherers]; n_ditherers++) {
160 /* count number of ditherers */
163 ditherers = g_new0 (GEnumValue, n_ditherers + 1);
165 for (i = 0; i < n_ditherers; i++) {
166 ditherers[i].value = i;
167 ditherers[i].value_name = g_strdup (aa_dithernames[i]);
168 ditherers[i].value_nick =
169 g_strdelimit (g_strdup (aa_dithernames[i]), " _", '-');
171 ditherers[i].value = 0;
172 ditherers[i].value_name = NULL;
173 ditherers[i].value_nick = NULL;
175 dither_type = g_enum_register_static ("GstAASinkDitherers", ditherers);
181 gst_aasink_base_init (gpointer g_class)
183 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
185 gst_element_class_add_pad_template (element_class,
186 gst_static_pad_template_get (&sink_template));
187 gst_element_class_set_details (element_class, &gst_aasink_details);
191 gst_aasink_class_init (GstAASinkClass * klass)
193 GObjectClass *gobject_class;
194 GstElementClass *gstelement_class;
195 GstBaseSinkClass *gstbasesink_class;
197 gobject_class = (GObjectClass *) klass;
198 gstelement_class = (GstElementClass *) klass;
199 gstbasesink_class = (GstBaseSinkClass *) klass;
201 parent_class = g_type_class_ref (GST_TYPE_BASE_SINK);
203 gobject_class->set_property = gst_aasink_set_property;
204 gobject_class->get_property = gst_aasink_get_property;
206 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 */
207 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 */
208 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! */
209 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! */
210 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 */
211 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 */
212 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 */
213 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_INVERSION, g_param_spec_boolean ("inversion", "inversion", "inversion", TRUE, G_PARAM_READWRITE)); /* CHECKME */
214 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 */
215 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 */
216 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 */
218 gst_aasink_signals[SIGNAL_FRAME_DISPLAYED] =
219 g_signal_new ("frame-displayed", G_TYPE_FROM_CLASS (klass),
220 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstAASinkClass, frame_displayed),
221 NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
222 gst_aasink_signals[SIGNAL_HAVE_SIZE] =
223 g_signal_new ("have-size", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
224 G_STRUCT_OFFSET (GstAASinkClass, have_size), NULL, NULL,
225 gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
227 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_aasink_change_state);
229 gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_aasink_setcaps);
230 gstbasesink_class->get_times = GST_DEBUG_FUNCPTR (gst_aasink_get_times);
231 gstbasesink_class->preroll = GST_DEBUG_FUNCPTR (gst_aasink_render);
232 gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_aasink_render);
236 gst_aasink_fixate (GstPad * pad, GstCaps * caps)
238 GstStructure *structure;
240 structure = gst_caps_get_structure (caps, 0);
242 gst_structure_fixate_field_nearest_int (structure, "width", 320);
243 gst_structure_fixate_field_nearest_int (structure, "height", 240);
244 gst_structure_fixate_field_nearest_double (structure, "framerate", 30.0);
248 gst_aasink_setcaps (GstBaseSink * basesink, GstCaps * caps)
251 GstStructure *structure;
253 aasink = GST_AASINK (basesink);
255 structure = gst_caps_get_structure (caps, 0);
256 gst_structure_get_int (structure, "width", &aasink->width);
257 gst_structure_get_int (structure, "height", &aasink->height);
259 /* FIXME aasink->format is never set */
260 g_print ("%d %d\n", aasink->width, aasink->height);
262 GST_DEBUG ("aasink: setting %08lx (%" GST_FOURCC_FORMAT ")",
263 aasink->format, GST_FOURCC_ARGS (aasink->format));
265 g_signal_emit (G_OBJECT (aasink), gst_aasink_signals[SIGNAL_HAVE_SIZE], 0,
266 aasink->width, aasink->height);
272 gst_aasink_init (GstAASink * aasink)
276 pad = GST_BASE_SINK_PAD (aasink);
277 gst_pad_set_fixatecaps_function (pad, gst_aasink_fixate);
279 memcpy (&aasink->ascii_surf, &aa_defparams,
280 sizeof (struct aa_hardware_params));
281 aasink->ascii_parms.bright = 0;
282 aasink->ascii_parms.contrast = 16;
283 aasink->ascii_parms.gamma = 1.0;
284 aasink->ascii_parms.dither = 0;
285 aasink->ascii_parms.inversion = 0;
286 aasink->ascii_parms.randomval = 0;
287 aasink->aa_driver = 0;
295 gst_aasink_scale (GstAASink * aasink, guchar * src, guchar * dest,
296 gint sw, gint sh, gint dw, gint dh)
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_get_times (GstBaseSink * sink, GstBuffer * buffer,
333 GstClockTime * start, GstClockTime * end)
335 *start = GST_BUFFER_TIMESTAMP (buffer);
336 *end = *start + GST_BUFFER_DURATION (buffer);
340 gst_aasink_render (GstBaseSink * basesink, GstBuffer * buffer)
344 aasink = GST_AASINK (basesink);
346 GST_DEBUG ("render");
348 gst_aasink_scale (aasink, GST_BUFFER_DATA (buffer), /* src */
349 aa_image (aasink->context), /* dest */
350 aasink->width, /* sw */
351 aasink->height, /* sh */
352 aa_imgwidth (aasink->context), /* dw */
353 aa_imgheight (aasink->context)); /* dh */
355 aa_render (aasink->context, &aasink->ascii_parms,
356 0, 0, aa_imgwidth (aasink->context), aa_imgheight (aasink->context));
357 aa_flush (aasink->context);
358 aa_getevent (aasink->context, FALSE);
365 gst_aasink_set_property (GObject * object, guint prop_id, const GValue * value,
370 aasink = GST_AASINK (object);
374 aasink->ascii_surf.width = g_value_get_int (value);
377 aasink->ascii_surf.height = g_value_get_int (value);
380 aasink->aa_driver = g_value_get_enum (value);
384 aasink->ascii_parms.dither = g_value_get_enum (value);
387 case ARG_BRIGHTNESS:{
388 aasink->ascii_parms.bright = g_value_get_int (value);
392 aasink->ascii_parms.contrast = g_value_get_int (value);
396 aasink->ascii_parms.gamma = g_value_get_float (value);
400 aasink->ascii_parms.inversion = g_value_get_boolean (value);
404 aasink->ascii_parms.randomval = g_value_get_int (value);
413 gst_aasink_get_property (GObject * object, guint prop_id, GValue * value,
418 aasink = GST_AASINK (object);
422 g_value_set_int (value, aasink->ascii_surf.width);
426 g_value_set_int (value, aasink->ascii_surf.height);
430 g_value_set_enum (value, aasink->aa_driver);
434 g_value_set_enum (value, aasink->ascii_parms.dither);
437 case ARG_BRIGHTNESS:{
438 g_value_set_int (value, aasink->ascii_parms.bright);
442 g_value_set_int (value, aasink->ascii_parms.contrast);
446 g_value_set_float (value, aasink->ascii_parms.gamma);
450 g_value_set_boolean (value, aasink->ascii_parms.inversion);
454 g_value_set_int (value, aasink->ascii_parms.randomval);
457 case ARG_FRAMES_DISPLAYED:{
458 g_value_set_int (value, aasink->frames_displayed);
461 case ARG_FRAME_TIME:{
462 g_value_set_int (value, aasink->frame_time / 1000000);
466 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
473 gst_aasink_open (GstAASink * aasink)
475 aa_recommendhidisplay (aa_drivers[aasink->aa_driver]->shortname);
477 aasink->context = aa_autoinit (&aasink->ascii_surf);
478 if (aasink->context == NULL) {
479 GST_ELEMENT_ERROR (GST_ELEMENT (aasink), LIBRARY, TOO_LAZY, (NULL),
480 ("error opening aalib context"));
483 aa_autoinitkbd (aasink->context, 0);
484 aa_resizehandler (aasink->context, (void *) aa_resize);
490 gst_aasink_close (GstAASink * aasink)
492 aa_close (aasink->context);
497 static GstStateChangeReturn
498 gst_aasink_change_state (GstElement * element, GstStateChange transition)
500 GstStateChangeReturn ret;
503 switch (transition) {
504 case GST_STATE_CHANGE_NULL_TO_READY:
506 case GST_STATE_CHANGE_READY_TO_PAUSED:
507 if (!gst_aasink_open (GST_AASINK (element)))
510 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
516 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
518 switch (transition) {
519 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
521 case GST_STATE_CHANGE_PAUSED_TO_READY:
523 case GST_STATE_CHANGE_READY_TO_NULL:
524 gst_aasink_close (GST_AASINK (element));
534 return GST_STATE_CHANGE_FAILURE;
539 plugin_init (GstPlugin * plugin)
541 if (!gst_element_register (plugin, "aasink", GST_RANK_NONE, GST_TYPE_AASINK))
547 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
550 "ASCII Art video sink",
551 plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);