1 /* GStreamer
2 * Copyright (C) 2009,2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
3 *
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.
8 *
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.
13 *
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., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include <string.h>
25
26 #include "gstfrei0r.h"
27 #include "gstfrei0rfilter.h"
28
29 GST_DEBUG_CATEGORY_EXTERN (frei0r_debug);
30 #define GST_CAT_DEFAULT frei0r_debug
31
32 typedef struct
33 {
34 f0r_plugin_info_t info;
35 GstFrei0rFuncTable ftable;
36 } GstFrei0rFilterClassData;
37
38 static gboolean
gst_frei0r_filter_set_caps(GstBaseTransform * trans,GstCaps * incaps,GstCaps * outcaps)39 gst_frei0r_filter_set_caps (GstBaseTransform * trans, GstCaps * incaps,
40 GstCaps * outcaps)
41 {
42 GstFrei0rFilter *self = GST_FREI0R_FILTER (trans);
43 GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (trans);
44 GstVideoInfo info;
45 gboolean destroy_f0r_instance = FALSE;
46
47 gst_video_info_init (&info);
48 if (!gst_video_info_from_caps (&info, incaps))
49 return FALSE;
50
51 if (self->width != info.width || self->height != info.height)
52 destroy_f0r_instance = TRUE;
53
54 self->width = info.width;
55 self->height = info.height;
56
57 if (self->f0r_instance && destroy_f0r_instance) {
58 klass->ftable->destruct (self->f0r_instance);
59 self->f0r_instance = NULL;
60 }
61
62 return TRUE;
63 }
64
65 static gboolean
gst_frei0r_filter_stop(GstBaseTransform * trans)66 gst_frei0r_filter_stop (GstBaseTransform * trans)
67 {
68 GstFrei0rFilter *self = GST_FREI0R_FILTER (trans);
69 GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (trans);
70
71 if (self->f0r_instance) {
72 klass->ftable->destruct (self->f0r_instance);
73 self->f0r_instance = NULL;
74 }
75
76 self->width = self->height = 0;
77
78 return TRUE;
79 }
80
81 static void
gst_frei0r_filter_before_transform(GstBaseTransform * trans,GstBuffer * buffer)82 gst_frei0r_filter_before_transform (GstBaseTransform * trans,
83 GstBuffer * buffer)
84 {
85 GstClockTime timestamp;
86 GstFrei0rFilter *self = GST_FREI0R_FILTER (trans);
87
88 timestamp = GST_BUFFER_TIMESTAMP (buffer);
89 timestamp =
90 gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp);
91
92 GST_DEBUG_OBJECT (self, "sync to %" GST_TIME_FORMAT,
93 GST_TIME_ARGS (timestamp));
94
95 if (GST_CLOCK_TIME_IS_VALID (timestamp))
96 gst_object_sync_values (GST_OBJECT (self), timestamp);
97 }
98
99 static GstFlowReturn
gst_frei0r_filter_transform(GstBaseTransform * trans,GstBuffer * inbuf,GstBuffer * outbuf)100 gst_frei0r_filter_transform (GstBaseTransform * trans, GstBuffer * inbuf,
101 GstBuffer * outbuf)
102 {
103 GstFrei0rFilter *self = GST_FREI0R_FILTER (trans);
104 GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (trans);
105 gdouble time;
106 GstMapInfo inmap, outmap;
107
108 if (G_UNLIKELY (self->width <= 0 || self->height <= 0))
109 return GST_FLOW_NOT_NEGOTIATED;
110
111 if (G_UNLIKELY (!self->f0r_instance)) {
112 self->f0r_instance =
113 gst_frei0r_instance_construct (klass->ftable, klass->properties,
114 klass->n_properties, self->property_cache, self->width, self->height);
115 if (G_UNLIKELY (!self->f0r_instance))
116 return GST_FLOW_ERROR;
117 }
118
119 time = ((gdouble) GST_BUFFER_TIMESTAMP (inbuf)) / GST_SECOND;
120
121 GST_OBJECT_LOCK (self);
122
123 gst_buffer_map (inbuf, &inmap, GST_MAP_READ);
124 gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
125
126 if (klass->ftable->update2)
127 klass->ftable->update2 (self->f0r_instance, time,
128 (const guint32 *) inmap.data, NULL, NULL, (guint32 *) outmap.data);
129 else
130 klass->ftable->update (self->f0r_instance, time,
131 (const guint32 *) inmap.data, (guint32 *) outmap.data);
132
133 gst_buffer_unmap (outbuf, &outmap);
134 gst_buffer_unmap (inbuf, &inmap);
135
136 GST_OBJECT_UNLOCK (self);
137
138 return GST_FLOW_OK;
139 }
140
141 static void
gst_frei0r_filter_finalize(GObject * object)142 gst_frei0r_filter_finalize (GObject * object)
143 {
144 GstFrei0rFilter *self = GST_FREI0R_FILTER (object);
145 GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (object);
146
147 if (self->f0r_instance) {
148 klass->ftable->destruct (self->f0r_instance);
149 self->f0r_instance = NULL;
150 }
151
152 if (self->property_cache)
153 gst_frei0r_property_cache_free (klass->properties, self->property_cache,
154 klass->n_properties);
155 self->property_cache = NULL;
156
157 G_OBJECT_CLASS (g_type_class_peek_parent (klass))->finalize (object);
158 }
159
160 static void
gst_frei0r_filter_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)161 gst_frei0r_filter_get_property (GObject * object, guint prop_id, GValue * value,
162 GParamSpec * pspec)
163 {
164 GstFrei0rFilter *self = GST_FREI0R_FILTER (object);
165 GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (object);
166
167 GST_OBJECT_LOCK (self);
168 if (!gst_frei0r_get_property (self->f0r_instance, klass->ftable,
169 klass->properties, klass->n_properties, self->property_cache, prop_id,
170 value))
171 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
172 GST_OBJECT_UNLOCK (self);
173 }
174
175 static void
gst_frei0r_filter_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)176 gst_frei0r_filter_set_property (GObject * object, guint prop_id,
177 const GValue * value, GParamSpec * pspec)
178 {
179 GstFrei0rFilter *self = GST_FREI0R_FILTER (object);
180 GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (object);
181
182 GST_OBJECT_LOCK (self);
183 if (!gst_frei0r_set_property (self->f0r_instance, klass->ftable,
184 klass->properties, klass->n_properties, self->property_cache, prop_id,
185 value))
186 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
187 GST_OBJECT_UNLOCK (self);
188 }
189
190 static void
gst_frei0r_filter_class_init(GstFrei0rFilterClass * klass,GstFrei0rFilterClassData * class_data)191 gst_frei0r_filter_class_init (GstFrei0rFilterClass * klass,
192 GstFrei0rFilterClassData * class_data)
193 {
194 GObjectClass *gobject_class = (GObjectClass *) klass;
195 GstElementClass *gstelement_class = (GstElementClass *) klass;
196 GstBaseTransformClass *gsttrans_class = (GstBaseTransformClass *) klass;
197 GstPadTemplate *templ;
198 const gchar *desc;
199 GstCaps *caps;
200 gchar *author;
201
202 klass->ftable = &class_data->ftable;
203 klass->info = &class_data->info;
204
205 gobject_class->finalize = gst_frei0r_filter_finalize;
206 gobject_class->set_property = gst_frei0r_filter_set_property;
207 gobject_class->get_property = gst_frei0r_filter_get_property;
208
209 klass->n_properties = klass->info->num_params;
210 klass->properties = g_new0 (GstFrei0rProperty, klass->n_properties);
211
212 gst_frei0r_klass_install_properties (gobject_class, klass->ftable,
213 klass->properties, klass->n_properties);
214
215 author =
216 g_strdup_printf
217 ("Sebastian Dröge <sebastian.droege@collabora.co.uk>, %s",
218 class_data->info.author);
219 desc = class_data->info.explanation;
220 if (desc == NULL || *desc == '\0')
221 desc = "No details";
222 gst_element_class_set_metadata (gstelement_class, class_data->info.name,
223 "Filter/Effect/Video", desc, author);
224 g_free (author);
225
226 caps = gst_frei0r_caps_from_color_model (class_data->info.color_model);
227
228 templ =
229 gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
230 gst_caps_ref (caps));
231 gst_element_class_add_pad_template (gstelement_class, templ);
232
233 templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps);
234 gst_element_class_add_pad_template (gstelement_class, templ);
235 gst_caps_unref (caps);
236
237 gsttrans_class->set_caps = GST_DEBUG_FUNCPTR (gst_frei0r_filter_set_caps);
238 gsttrans_class->stop = GST_DEBUG_FUNCPTR (gst_frei0r_filter_stop);
239 gsttrans_class->transform = GST_DEBUG_FUNCPTR (gst_frei0r_filter_transform);
240 gsttrans_class->before_transform =
241 GST_DEBUG_FUNCPTR (gst_frei0r_filter_before_transform);
242 }
243
244 static void
gst_frei0r_filter_init(GstFrei0rFilter * self,GstFrei0rFilterClass * klass)245 gst_frei0r_filter_init (GstFrei0rFilter * self, GstFrei0rFilterClass * klass)
246 {
247 self->property_cache =
248 gst_frei0r_property_cache_init (klass->properties, klass->n_properties);
249 gst_pad_use_fixed_caps (GST_BASE_TRANSFORM_SINK_PAD (self));
250 gst_pad_use_fixed_caps (GST_BASE_TRANSFORM_SRC_PAD (self));
251 }
252
253 GstFrei0rPluginRegisterReturn
gst_frei0r_filter_register(GstPlugin * plugin,const gchar * vendor,const f0r_plugin_info_t * info,const GstFrei0rFuncTable * ftable)254 gst_frei0r_filter_register (GstPlugin * plugin, const gchar * vendor,
255 const f0r_plugin_info_t * info, const GstFrei0rFuncTable * ftable)
256 {
257 GTypeInfo typeinfo = {
258 sizeof (GstFrei0rFilterClass),
259 NULL,
260 NULL,
261 (GClassInitFunc) gst_frei0r_filter_class_init,
262 NULL,
263 NULL,
264 sizeof (GstFrei0rFilter),
265 0,
266 (GInstanceInitFunc) gst_frei0r_filter_init
267 };
268 GType type;
269 gchar *type_name, *tmp;
270 GstFrei0rFilterClassData *class_data;
271 GstFrei0rPluginRegisterReturn ret = GST_FREI0R_PLUGIN_REGISTER_RETURN_FAILED;
272
273 if (vendor)
274 tmp = g_strdup_printf ("frei0r-filter-%s-%s", vendor, info->name);
275 else
276 tmp = g_strdup_printf ("frei0r-filter-%s", info->name);
277 type_name = g_ascii_strdown (tmp, -1);
278 g_free (tmp);
279 g_strcanon (type_name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-+", '-');
280
281 if (g_type_from_name (type_name)) {
282 GST_DEBUG ("Type '%s' already exists", type_name);
283 return GST_FREI0R_PLUGIN_REGISTER_RETURN_ALREADY_REGISTERED;
284 }
285
286 class_data = g_new0 (GstFrei0rFilterClassData, 1);
287 memcpy (&class_data->info, info, sizeof (f0r_plugin_info_t));
288 memcpy (&class_data->ftable, ftable, sizeof (GstFrei0rFuncTable));
289 typeinfo.class_data = class_data;
290
291 type =
292 g_type_register_static (GST_TYPE_VIDEO_FILTER, type_name, &typeinfo, 0);
293 if (gst_element_register (plugin, type_name, GST_RANK_NONE, type))
294 ret = GST_FREI0R_PLUGIN_REGISTER_RETURN_OK;
295
296 g_free (type_name);
297 return ret;
298 }
299