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.
20 * SECTION:element-cacasink
21 * @see_also: #GstAASink
25 * Displays video as color ascii art.
27 * <title>Example launch line</title>
30 * CACA_GEOMETRY=160x60 CACA_FONT=5x7 gst-launch filesrc location=test.avi ! decodebin ! ffmpegcolorspace ! cacasink
32 * This pipeline renders a video to ascii art into a separate window using a
33 * small font and specifying the ascii resolution.
37 * CACA_DRIVER=ncurses gst-launch filesrc location=test.avi ! decodebin ! ffmpegcolorspace ! cacasink
39 * This pipeline renders a video to ascii art into the current terminal.
51 #include "gstcacasink.h"
53 /* elementfactory information */
54 static const GstElementDetails gst_cacasink_details =
55 GST_ELEMENT_DETAILS ("A colored ASCII art video sink",
57 "A colored ASCII art videosink",
58 "Zeeshan Ali <zak147@yahoo.com>");
60 /* cacasink signals and args */
76 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
79 GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_RGBx ";"
80 GST_VIDEO_CAPS_RGB_16 ";" GST_VIDEO_CAPS_RGB_15)
83 static void gst_cacasink_base_init (gpointer g_class);
84 static void gst_cacasink_class_init (GstCACASinkClass * klass);
85 static void gst_cacasink_init (GstCACASink * cacasink);
87 static gboolean gst_cacasink_setcaps (GstBaseSink * pad, GstCaps * caps);
88 static void gst_cacasink_get_times (GstBaseSink * sink, GstBuffer * buffer,
89 GstClockTime * start, GstClockTime * end);
90 static GstFlowReturn gst_cacasink_render (GstBaseSink * basesink,
93 static void gst_cacasink_set_property (GObject * object, guint prop_id,
94 const GValue * value, GParamSpec * pspec);
95 static void gst_cacasink_get_property (GObject * object, guint prop_id,
96 GValue * value, GParamSpec * pspec);
98 static GstStateChangeReturn gst_cacasink_change_state (GstElement * element,
99 GstStateChange transition);
101 static GstElementClass *parent_class = NULL;
104 gst_cacasink_get_type (void)
106 static GType cacasink_type = 0;
108 if (!cacasink_type) {
109 static const GTypeInfo cacasink_info = {
110 sizeof (GstCACASinkClass),
111 gst_cacasink_base_init,
113 (GClassInitFunc) gst_cacasink_class_init,
116 sizeof (GstCACASink),
118 (GInstanceInitFunc) gst_cacasink_init,
122 g_type_register_static (GST_TYPE_BASE_SINK, "GstCACASink",
125 return cacasink_type;
128 #define GST_TYPE_CACADITHER (gst_cacasink_dither_get_type())
130 gst_cacasink_dither_get_type (void)
132 static GType dither_type = 0;
134 static const GEnumValue dither_types[] = {
135 {CACA_DITHERING_NONE, "No dithering", "none"},
136 {CACA_DITHERING_ORDERED2, "Ordered 2x2 Bayer dithering", "2x2"},
137 {CACA_DITHERING_ORDERED4, "Ordered 4x4 Bayer dithering", "4x4"},
138 {CACA_DITHERING_ORDERED8, "Ordered 8x8 Bayer dithering", "8x8"},
139 {CACA_DITHERING_RANDOM, "Random dithering", "random"},
144 dither_type = g_enum_register_static ("GstCACASinkDithering", dither_types);
150 gst_cacasink_base_init (gpointer g_class)
152 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
154 gst_element_class_set_details (element_class, &gst_cacasink_details);
155 gst_element_class_add_pad_template (element_class,
156 gst_static_pad_template_get (&sink_template));
160 gst_cacasink_class_init (GstCACASinkClass * klass)
162 GObjectClass *gobject_class;
163 GstElementClass *gstelement_class;
164 GstBaseSinkClass *gstbasesink_class;
166 gobject_class = (GObjectClass *) klass;
167 gstelement_class = (GstElementClass *) klass;
168 gstbasesink_class = (GstBaseSinkClass *) klass;
170 parent_class = g_type_class_peek_parent (klass);
172 gobject_class->set_property = gst_cacasink_set_property;
173 gobject_class->get_property = gst_cacasink_get_property;
174 gstelement_class->change_state = gst_cacasink_change_state;
176 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SCREEN_WIDTH,
177 g_param_spec_int ("screen-width", "Screen Width",
178 "The width of the screen", 0, G_MAXINT, GST_CACA_DEFAULT_SCREEN_WIDTH,
180 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SCREEN_HEIGHT,
181 g_param_spec_int ("screen-height", "Screen Height",
182 "The height of the screen", 0, G_MAXINT,
183 GST_CACA_DEFAULT_SCREEN_HEIGHT, G_PARAM_READABLE));
184 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DITHER,
185 g_param_spec_enum ("dither", "Dither Type", "Set type of Dither",
186 GST_TYPE_CACADITHER, CACA_DITHERING_NONE, G_PARAM_READWRITE));
187 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ANTIALIASING,
188 g_param_spec_boolean ("anti-aliasing", "Anti Aliasing",
189 "Enables Anti-Aliasing", TRUE, G_PARAM_READWRITE));
191 gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_cacasink_setcaps);
192 gstbasesink_class->get_times = GST_DEBUG_FUNCPTR (gst_cacasink_get_times);
193 gstbasesink_class->preroll = GST_DEBUG_FUNCPTR (gst_cacasink_render);
194 gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_cacasink_render);
198 gst_cacasink_get_times (GstBaseSink * sink, GstBuffer * buffer,
199 GstClockTime * start, GstClockTime * end)
201 *start = GST_BUFFER_TIMESTAMP (buffer);
202 *end = *start + GST_BUFFER_DURATION (buffer);
206 gst_cacasink_setcaps (GstBaseSink * basesink, GstCaps * caps)
208 GstCACASink *cacasink;
209 GstStructure *structure;
211 cacasink = GST_CACASINK (basesink);
213 structure = gst_caps_get_structure (caps, 0);
214 gst_structure_get_int (structure, "width", &(cacasink->width));
215 gst_structure_get_int (structure, "height", &(cacasink->height));
216 gst_structure_get_int (structure, "bpp", (int *) &cacasink->bpp);
217 gst_structure_get_int (structure, "red_mask", (int *) &cacasink->red_mask);
218 gst_structure_get_int (structure, "green_mask",
219 (int *) &cacasink->green_mask);
220 gst_structure_get_int (structure, "blue_mask", (int *) &cacasink->blue_mask);
222 if (cacasink->bpp == 24) {
223 cacasink->red_mask = GUINT32_FROM_BE (cacasink->red_mask) >> 8;
224 cacasink->green_mask = GUINT32_FROM_BE (cacasink->green_mask) >> 8;
225 cacasink->blue_mask = GUINT32_FROM_BE (cacasink->blue_mask) >> 8;
228 else if (cacasink->bpp == 32) {
229 cacasink->red_mask = GUINT32_FROM_BE (cacasink->red_mask);
230 cacasink->green_mask = GUINT32_FROM_BE (cacasink->green_mask);
231 cacasink->blue_mask = GUINT32_FROM_BE (cacasink->blue_mask);
234 else if (cacasink->bpp == 16 || cacasink->bpp == 15) {
235 cacasink->red_mask = GUINT16_FROM_BE (cacasink->red_mask);
236 cacasink->green_mask = GUINT16_FROM_BE (cacasink->green_mask);
237 cacasink->blue_mask = GUINT16_FROM_BE (cacasink->blue_mask);
240 if (cacasink->bitmap) {
241 caca_free_bitmap (cacasink->bitmap);
244 cacasink->bitmap = caca_create_bitmap (cacasink->bpp,
247 cacasink->width * cacasink->bpp / 8,
248 cacasink->red_mask, cacasink->green_mask, cacasink->blue_mask, 0);
250 if (!cacasink->bitmap) {
258 gst_cacasink_init (GstCACASink * cacasink)
262 pad = GST_BASE_SINK_PAD (cacasink);
263 /* gst_pad_set_fixatecaps_function (pad, gst_cacasink_fixate); */
265 cacasink->screen_width = GST_CACA_DEFAULT_SCREEN_WIDTH;
266 cacasink->screen_height = GST_CACA_DEFAULT_SCREEN_HEIGHT;
267 cacasink->bpp = GST_CACA_DEFAULT_BPP;
268 cacasink->red_mask = GST_CACA_DEFAULT_RED_MASK;
269 cacasink->green_mask = GST_CACA_DEFAULT_GREEN_MASK;
270 cacasink->blue_mask = GST_CACA_DEFAULT_BLUE_MASK;
274 gst_cacasink_render (GstBaseSink * basesink, GstBuffer * buffer)
276 GstCACASink *cacasink = GST_CACASINK (basesink);
278 GST_DEBUG ("render");
281 caca_draw_bitmap (0, 0, cacasink->screen_width - 1,
282 cacasink->screen_height - 1, cacasink->bitmap, GST_BUFFER_DATA (buffer));
289 gst_cacasink_set_property (GObject * object, guint prop_id,
290 const GValue * value, GParamSpec * pspec)
292 GstCACASink *cacasink;
294 g_return_if_fail (GST_IS_CACASINK (object));
296 cacasink = GST_CACASINK (object);
300 cacasink->dither = g_value_get_enum (value);
301 caca_set_dithering (cacasink->dither + CACA_DITHERING_NONE);
304 case ARG_ANTIALIASING:{
305 cacasink->antialiasing = g_value_get_boolean (value);
306 if (cacasink->antialiasing) {
307 caca_set_feature (CACA_ANTIALIASING_MAX);
309 caca_set_feature (CACA_ANTIALIASING_MIN);
319 gst_cacasink_get_property (GObject * object, guint prop_id, GValue * value,
322 GstCACASink *cacasink;
324 cacasink = GST_CACASINK (object);
327 case ARG_SCREEN_WIDTH:{
328 g_value_set_int (value, cacasink->screen_width);
331 case ARG_SCREEN_HEIGHT:{
332 g_value_set_int (value, cacasink->screen_height);
336 g_value_set_enum (value, cacasink->dither);
339 case ARG_ANTIALIASING:{
340 g_value_set_boolean (value, cacasink->antialiasing);
344 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
351 gst_cacasink_open (GstCACASink * cacasink)
353 cacasink->bitmap = NULL;
356 cacasink->screen_width = caca_get_width ();
357 cacasink->screen_height = caca_get_height ();
358 cacasink->antialiasing = TRUE;
359 caca_set_feature (CACA_ANTIALIASING_MAX);
360 cacasink->dither = 0;
361 caca_set_dithering (CACA_DITHERING_NONE);
367 gst_cacasink_close (GstCACASink * cacasink)
369 if (cacasink->bitmap) {
370 caca_free_bitmap (cacasink->bitmap);
371 cacasink->bitmap = NULL;
376 static GstStateChangeReturn
377 gst_cacasink_change_state (GstElement * element, GstStateChange transition)
379 GstStateChangeReturn ret;
381 switch (transition) {
382 case GST_STATE_CHANGE_READY_TO_PAUSED:
383 if (!gst_cacasink_open (GST_CACASINK (element)))
384 return GST_STATE_CHANGE_FAILURE;
390 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
392 switch (transition) {
393 case GST_STATE_CHANGE_PAUSED_TO_READY:
394 gst_cacasink_close (GST_CACASINK (element));
403 plugin_init (GstPlugin * plugin)
405 if (!gst_element_register (plugin, "cacasink", GST_RANK_NONE,
412 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
415 "Colored ASCII Art video sink",
416 plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)