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.
26 #include "gstsmokeenc.h"
27 #include <gst/video/video.h>
29 /* elementfactory information */
30 GstElementDetails gst_smokeenc_details = {
31 "Smoke image encoder",
32 "Codec/Encoder/Image",
33 "Encode images in the Smoke format",
34 "Wim Taymans <wim@fluendo.com>",
37 GST_DEBUG_CATEGORY (smokeenc_debug);
38 #define GST_CAT_DEFAULT smokeenc_debug
40 #define SMOKEENC_DEFAULT_MIN_QUALITY 10
41 #define SMOKEENC_DEFAULT_MAX_QUALITY 85
42 #define SMOKEENC_DEFAULT_THRESHOLD 3000
43 #define SMOKEENC_DEFAULT_KEYFRAME 20
45 /* SmokeEnc signals and args */
63 static void gst_smokeenc_base_init (gpointer g_class);
64 static void gst_smokeenc_class_init (GstSmokeEnc * klass);
65 static void gst_smokeenc_init (GstSmokeEnc * smokeenc);
67 static GstFlowReturn gst_smokeenc_chain (GstPad * pad, GstBuffer * buf);
68 static gboolean gst_smokeenc_setcaps (GstPad * pad, GstCaps * caps);
69 static GstCaps *gst_smokeenc_getcaps (GstPad * pad);
71 static void gst_smokeenc_resync (GstSmokeEnc * smokeenc);
72 static void gst_smokeenc_set_property (GObject * object, guint prop_id,
73 const GValue * value, GParamSpec * pspec);
74 static void gst_smokeenc_get_property (GObject * object, guint prop_id,
75 GValue * value, GParamSpec * pspec);
77 static GstElementClass *parent_class = NULL;
79 //static guint gst_smokeenc_signals[LAST_SIGNAL] = { 0 };
82 gst_smokeenc_get_type (void)
84 static GType smokeenc_type = 0;
87 static const GTypeInfo smokeenc_info = {
88 sizeof (GstSmokeEncClass),
89 (GBaseInitFunc) gst_smokeenc_base_init,
91 (GClassInitFunc) gst_smokeenc_class_init,
96 (GInstanceInitFunc) gst_smokeenc_init,
100 g_type_register_static (GST_TYPE_ELEMENT, "GstSmokeEnc", &smokeenc_info,
103 return smokeenc_type;
106 static GstStaticPadTemplate gst_smokeenc_sink_pad_template =
107 GST_STATIC_PAD_TEMPLATE ("sink",
110 GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
113 static GstStaticPadTemplate gst_smokeenc_src_pad_template =
114 GST_STATIC_PAD_TEMPLATE ("src",
117 GST_STATIC_CAPS ("video/x-smoke, "
118 "width = (int) [ 16, 4096 ], "
119 "height = (int) [ 16, 4096 ], " "framerate = (fraction) [ 0/1, MAX ]")
123 gst_smokeenc_base_init (gpointer g_class)
125 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
127 gst_element_class_add_pad_template (element_class,
128 gst_static_pad_template_get (&gst_smokeenc_sink_pad_template));
129 gst_element_class_add_pad_template (element_class,
130 gst_static_pad_template_get (&gst_smokeenc_src_pad_template));
131 gst_element_class_set_details (element_class, &gst_smokeenc_details);
135 gst_smokeenc_class_init (GstSmokeEnc * klass)
137 GObjectClass *gobject_class;
138 GstElementClass *gstelement_class;
140 gobject_class = (GObjectClass *) klass;
141 gstelement_class = (GstElementClass *) klass;
143 parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
145 gobject_class->set_property = gst_smokeenc_set_property;
146 gobject_class->get_property = gst_smokeenc_get_property;
148 g_object_class_install_property (gobject_class, ARG_MIN_QUALITY,
149 g_param_spec_int ("qmin", "Qmin", "Minimum quality",
150 0, 100, SMOKEENC_DEFAULT_MIN_QUALITY, G_PARAM_READWRITE));
151 g_object_class_install_property (gobject_class, ARG_MAX_QUALITY,
152 g_param_spec_int ("qmax", "Qmax", "Maximum quality",
153 0, 100, SMOKEENC_DEFAULT_MAX_QUALITY, G_PARAM_READWRITE));
154 g_object_class_install_property (gobject_class, ARG_THRESHOLD,
155 g_param_spec_int ("threshold", "Threshold", "Motion estimation threshold",
156 0, 100000000, SMOKEENC_DEFAULT_THRESHOLD, G_PARAM_READWRITE));
157 g_object_class_install_property (gobject_class, ARG_KEYFRAME,
158 g_param_spec_int ("keyframe", "Keyframe",
159 "Insert keyframe every N frames", 1, 100000,
160 SMOKEENC_DEFAULT_KEYFRAME, G_PARAM_READWRITE));
162 GST_DEBUG_CATEGORY_INIT (smokeenc_debug, "smokeenc", 0,
163 "Smoke encoding element");
167 gst_smokeenc_init (GstSmokeEnc * smokeenc)
169 /* create the sink and src pads */
171 gst_pad_new_from_template (gst_static_pad_template_get
172 (&gst_smokeenc_sink_pad_template), "sink");
173 gst_pad_set_chain_function (smokeenc->sinkpad, gst_smokeenc_chain);
174 gst_pad_set_getcaps_function (smokeenc->sinkpad, gst_smokeenc_getcaps);
175 gst_pad_set_setcaps_function (smokeenc->sinkpad, gst_smokeenc_setcaps);
176 gst_element_add_pad (GST_ELEMENT (smokeenc), smokeenc->sinkpad);
179 gst_pad_new_from_template (gst_static_pad_template_get
180 (&gst_smokeenc_src_pad_template), "src");
181 gst_pad_set_getcaps_function (smokeenc->sinkpad, gst_smokeenc_getcaps);
182 gst_pad_use_fixed_caps (smokeenc->sinkpad);
183 /*gst_pad_set_link_function (smokeenc->sinkpad, gst_smokeenc_link); */
184 gst_element_add_pad (GST_ELEMENT (smokeenc), smokeenc->srcpad);
186 /* reset the initial video state */
188 smokeenc->height = 0;
190 smokeenc->need_header = TRUE;
192 gst_smokeenc_resync (smokeenc);
194 smokeenc->min_quality = SMOKEENC_DEFAULT_MIN_QUALITY;
195 smokeenc->max_quality = SMOKEENC_DEFAULT_MAX_QUALITY;
196 smokeenc->threshold = SMOKEENC_DEFAULT_THRESHOLD;
197 smokeenc->keyframe = SMOKEENC_DEFAULT_KEYFRAME;
201 gst_smokeenc_getcaps (GstPad * pad)
203 GstSmokeEnc *smokeenc = GST_SMOKEENC (gst_pad_get_parent (pad));
208 GstStructure *structure = NULL;
210 /* we want to proxy properties like width, height and framerate from the
211 other end of the element */
212 otherpad = (pad == smokeenc->srcpad) ? smokeenc->sinkpad : smokeenc->srcpad;
213 caps = gst_pad_get_allowed_caps (otherpad);
214 if (pad == smokeenc->srcpad) {
215 name = "image/x-smoke";
217 name = "video/x-raw-yuv";
219 for (i = 0; i < gst_caps_get_size (caps); i++) {
220 structure = gst_caps_get_structure (caps, i);
222 gst_structure_set_name (structure, name);
223 gst_structure_remove_field (structure, "format");
224 /* ... but for the sink pad, we only do I420 anyway, so add that */
225 if (pad == smokeenc->sinkpad) {
226 gst_structure_set (structure, "format", GST_TYPE_FOURCC,
227 GST_STR_FOURCC ("I420"), NULL);
231 gst_object_unref (smokeenc);
237 gst_smokeenc_setcaps (GstPad * pad, GstCaps * caps)
239 GstSmokeEnc *smokeenc = GST_SMOKEENC (gst_pad_get_parent (pad));
240 GstStructure *structure;
244 const GValue *framerate;
246 otherpad = (pad == smokeenc->srcpad) ? smokeenc->sinkpad : smokeenc->srcpad;
248 structure = gst_caps_get_structure (caps, 0);
249 framerate = gst_structure_get_value (structure, "framerate");
251 smokeenc->fps_num = gst_value_get_fraction_numerator (framerate);
252 smokeenc->fps_denom = gst_value_get_fraction_denominator (framerate);
254 smokeenc->fps_num = 0;
255 smokeenc->fps_denom = 1;
258 gst_structure_get_int (structure, "width", &smokeenc->width);
259 gst_structure_get_int (structure, "height", &smokeenc->height);
261 othercaps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
262 gst_caps_set_simple (othercaps,
263 "width", G_TYPE_INT, smokeenc->width,
264 "height", G_TYPE_INT, smokeenc->height,
265 "framerate", GST_TYPE_FRACTION, smokeenc->fps_num, smokeenc->fps_denom,
268 ret = gst_pad_set_caps (smokeenc->srcpad, othercaps);
269 gst_caps_unref (othercaps);
271 if (GST_PAD_LINK_SUCCESSFUL (ret)) {
272 gst_smokeenc_resync (smokeenc);
275 gst_object_unref (smokeenc);
281 gst_smokeenc_resync (GstSmokeEnc * smokeenc)
283 GST_DEBUG ("gst_smokeenc_resync: resync");
285 smokecodec_encode_new (&smokeenc->info, smokeenc->width, smokeenc->height,
286 smokeenc->fps_num, smokeenc->fps_denom);
287 smokecodec_set_quality (smokeenc->info, smokeenc->min_quality,
288 smokeenc->max_quality);
290 GST_DEBUG ("gst_smokeenc_resync: resync done");
294 gst_smokeenc_chain (GstPad * pad, GstBuffer * buf)
296 GstSmokeEnc *smokeenc;
297 guchar *data, *outdata;
302 SmokeCodecFlags flags;
305 smokeenc = GST_SMOKEENC (GST_OBJECT_PARENT (pad));
307 data = GST_BUFFER_DATA (buf);
308 size = GST_BUFFER_SIZE (buf);
310 GST_DEBUG ("gst_smokeenc_chain: got buffer of %ld bytes in '%s'", size,
311 GST_OBJECT_NAME (smokeenc));
313 if (smokeenc->need_header) {
314 outbuf = gst_buffer_new ();
316 outdata = g_malloc (outsize);
317 GST_BUFFER_DATA (outbuf) = outdata;
318 GST_BUFFER_MALLOCDATA (outbuf) = outdata;
319 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
320 GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
322 smokecodec_encode_id (smokeenc->info, outdata, &encsize);
324 GST_BUFFER_SIZE (outbuf) = encsize;
326 ret = gst_pad_push (smokeenc->srcpad, outbuf);
328 smokeenc->need_header = FALSE;
331 outbuf = gst_buffer_new ();
332 outsize = smokeenc->width * smokeenc->height * 3;
333 outdata = g_malloc (outsize);
334 GST_BUFFER_DATA (outbuf) = outdata;
335 GST_BUFFER_MALLOCDATA (outbuf) = outdata;
336 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
337 GST_BUFFER_DURATION (outbuf) =
338 smokeenc->fps_denom * GST_SECOND / smokeenc->fps_num;
341 if ((smokeenc->frame % smokeenc->keyframe) == 0) {
342 flags |= SMOKECODEC_KEYFRAME;
344 smokecodec_set_quality (smokeenc->info, smokeenc->min_quality,
345 smokeenc->max_quality);
346 smokecodec_set_threshold (smokeenc->info, smokeenc->threshold);
347 smokecodec_encode (smokeenc->info, data, flags, outdata, &encsize);
348 gst_buffer_unref (buf);
350 GST_BUFFER_SIZE (outbuf) = encsize;
351 GST_BUFFER_OFFSET (outbuf) = smokeenc->frame;
352 GST_BUFFER_OFFSET_END (outbuf) = smokeenc->frame + 1;
354 ret = gst_pad_push (smokeenc->srcpad, outbuf);
362 gst_smokeenc_set_property (GObject * object, guint prop_id,
363 const GValue * value, GParamSpec * pspec)
365 GstSmokeEnc *smokeenc;
367 g_return_if_fail (GST_IS_SMOKEENC (object));
368 smokeenc = GST_SMOKEENC (object);
371 case ARG_MIN_QUALITY:
372 smokeenc->min_quality = g_value_get_int (value);
374 case ARG_MAX_QUALITY:
375 smokeenc->max_quality = g_value_get_int (value);
378 smokeenc->threshold = g_value_get_int (value);
381 smokeenc->keyframe = g_value_get_int (value);
389 gst_smokeenc_get_property (GObject * object, guint prop_id, GValue * value,
392 GstSmokeEnc *smokeenc;
394 g_return_if_fail (GST_IS_SMOKEENC (object));
395 smokeenc = GST_SMOKEENC (object);
398 case ARG_MIN_QUALITY:
399 g_value_set_int (value, smokeenc->min_quality);
401 case ARG_MAX_QUALITY:
402 g_value_set_int (value, smokeenc->max_quality);
405 g_value_set_int (value, smokeenc->threshold);
408 g_value_set_int (value, smokeenc->keyframe);
411 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);