gstgoom.c 15.6 KB
Newer Older
1
2
/* gstgoom.c: implementation of goom drawing element
 * Copyright (C) <2001> Richard Boulton <richard@tartarus.org>
Wim Taymans's avatar
Wim Taymans committed
3
 *           (C) <2006> Wim Taymans <wim at fluendo dot com>
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
21
22
23
24
25
26
27
28
/**
 * SECTION:element-goom
 * @see_also: synaesthesia
 *
 * <refsect2>
 * <title>Example launch line</title>
 * <para>
 * <programlisting>
29
 * gst-launch -v audiotestsrc ! goom ! ffmpegcolorspace ! xvimagesink
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
30
31
32
33
34
 * </programlisting>
 * </para>
 * </refsect2>
 */

35
36
37
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
38

39
#include <string.h>
40
#include <gst/gst.h>
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
41
#include "gstgoom.h"
42
#include <gst/video/video.h>
43
44
#include "goom_core.h"

45
46
47
GST_DEBUG_CATEGORY_STATIC (goom_debug);
#define GST_CAT_DEFAULT goom_debug

48
/* elementfactory information */
49
static const GstElementDetails gst_goom_details =
Wim Taymans's avatar
Wim Taymans committed
50
51
52
GST_ELEMENT_DETAILS ("GOOM: what a GOOM!",
    "Visualization",
    "Takes frames of data and outputs video frames using the GOOM filter",
Wim Taymans's avatar
Wim Taymans committed
53
    "Wim Taymans <wim@fluendo.com>");
54
55

/* signals and args */
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
56
57
enum
{
58
59
60
61
  /* FILL ME */
  LAST_SIGNAL
};

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
62
63
enum
{
64
65
  ARG_0
      /* FILL ME */
66
67
};

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
68
69
70
71
72
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN)
    );
73

74
75
76
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",    /* the name of the pads */
    GST_PAD_SINK,               /* type of the pad */
    GST_PAD_ALWAYS,             /* ALWAYS/SOMETIMES */
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
77
    GST_STATIC_CAPS ("audio/x-raw-int, "
78
79
80
81
        "endianness = (int) BYTE_ORDER, "
        "signed = (boolean) TRUE, "
        "width = (int) 16, "
        "depth = (int) 16, "
Wim Taymans's avatar
Wim Taymans committed
82
        "rate = (int) [ 8000, 96000 ], " "channels = (int) { 1, 2 }")
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
83
84
85
    );


Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
86
87
88
static void gst_goom_class_init (GstGoomClass * klass);
static void gst_goom_base_init (GstGoomClass * klass);
static void gst_goom_init (GstGoom * goom);
Wim Taymans's avatar
Wim Taymans committed
89
static void gst_goom_finalize (GObject * object);
90

91
92
static GstStateChangeReturn gst_goom_change_state (GstElement * element,
    GstStateChange transition);
93

Wim Taymans's avatar
Wim Taymans committed
94
static GstFlowReturn gst_goom_chain (GstPad * pad, GstBuffer * buffer);
Wim Taymans's avatar
Wim Taymans committed
95
96
static gboolean gst_goom_src_event (GstPad * pad, GstEvent * event);
static gboolean gst_goom_sink_event (GstPad * pad, GstEvent * event);
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
97

Wim Taymans's avatar
Wim Taymans committed
98
99
static GstPadLinkReturn gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps);
static GstPadLinkReturn gst_goom_src_setcaps (GstPad * pad, GstCaps * caps);
100
101
102
103
104
105
106
107
108
109

static GstElementClass *parent_class = NULL;

GType
gst_goom_get_type (void)
{
  static GType type = 0;

  if (!type) {
    static const GTypeInfo info = {
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
110
      sizeof (GstGoomClass),
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
111
112
      (GBaseInitFunc) gst_goom_base_init,
      NULL,
113
114
115
      (GClassInitFunc) gst_goom_class_init,
      NULL,
      NULL,
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
116
      sizeof (GstGoom),
117
118
119
      0,
      (GInstanceInitFunc) gst_goom_init,
    };
120

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
121
    type = g_type_register_static (GST_TYPE_ELEMENT, "GstGoom", &info, 0);
122
123
124
125
  }
  return type;
}

Ronald S. Bultje's avatar
Ronald S. Bultje committed
126
static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
127
gst_goom_base_init (GstGoomClass * klass)
Ronald S. Bultje's avatar
Ronald S. Bultje committed
128
129
130
131
132
{
  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);

  gst_element_class_set_details (element_class, &gst_goom_details);
  gst_element_class_add_pad_template (element_class,
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
133
      gst_static_pad_template_get (&sink_template));
Ronald S. Bultje's avatar
Ronald S. Bultje committed
134
  gst_element_class_add_pad_template (element_class,
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
135
      gst_static_pad_template_get (&src_template));
Ronald S. Bultje's avatar
Ronald S. Bultje committed
136
137
}

138
static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
139
gst_goom_class_init (GstGoomClass * klass)
140
141
142
143
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
144
145
  gobject_class = (GObjectClass *) klass;
  gstelement_class = (GstElementClass *) klass;
146

147
  parent_class = g_type_class_peek_parent (klass);
148

Wim Taymans's avatar
Wim Taymans committed
149
  gobject_class->finalize = gst_goom_finalize;
150
151

  gstelement_class->change_state = gst_goom_change_state;
152
153

  GST_DEBUG_CATEGORY_INIT (goom_debug, "goom", 0, "goom visualisation element");
154
155
156
}

static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
157
gst_goom_init (GstGoom * goom)
158
159
{
  /* create the sink and src pads */
160
  goom->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
161
  gst_pad_set_chain_function (goom->sinkpad, gst_goom_chain);
Wim Taymans's avatar
Wim Taymans committed
162
  gst_pad_set_event_function (goom->sinkpad, gst_goom_sink_event);
Wim Taymans's avatar
Wim Taymans committed
163
  gst_pad_set_setcaps_function (goom->sinkpad, gst_goom_sink_setcaps);
Wim Taymans's avatar
Wim Taymans committed
164
165
166
  gst_element_add_pad (GST_ELEMENT (goom), goom->sinkpad);

  goom->srcpad = gst_pad_new_from_static_template (&src_template, "src");
Wim Taymans's avatar
Wim Taymans committed
167
  gst_pad_set_setcaps_function (goom->srcpad, gst_goom_src_setcaps);
Wim Taymans's avatar
Wim Taymans committed
168
169
  gst_pad_set_event_function (goom->srcpad, gst_goom_src_event);
  gst_element_add_pad (GST_ELEMENT (goom), goom->srcpad);
Wim Taymans's avatar
Wim Taymans committed
170

171
172
  goom->adapter = gst_adapter_new ();

173
174
  goom->width = 320;
  goom->height = 200;
175
176
  goom->fps_n = 25;             /* desired frame rate */
  goom->fps_d = 1;              /* desired frame rate */
Wim Taymans's avatar
Wim Taymans committed
177
  goom->channels = 0;
Wim Taymans's avatar
Wim Taymans committed
178
179
  goom->rate = 0;
  goom->duration = 0;
180

181
  goom_init (&(goom->goomdata), goom->width, goom->height);
Wim Taymans's avatar
Wim Taymans committed
182
183
184
}

static void
Wim Taymans's avatar
Wim Taymans committed
185
gst_goom_finalize (GObject * object)
Wim Taymans's avatar
Wim Taymans committed
186
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
187
  GstGoom *goom = GST_GOOM (object);
188

Wim Taymans's avatar
Wim Taymans committed
189
  goom_close (&(goom->goomdata));
190

Wim Taymans's avatar
Wim Taymans committed
191
  g_object_unref (goom->adapter);
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
192

Wim Taymans's avatar
Wim Taymans committed
193
194
195
196
197
198
199
200
201
202
203
204
205
206
  G_OBJECT_CLASS (parent_class)->finalize (object);
}

static void
gst_goom_reset (GstGoom * goom)
{
  goom->next_ts = -1;
  gst_adapter_clear (goom->adapter);
  gst_segment_init (&goom->segment, GST_FORMAT_UNDEFINED);

  GST_OBJECT_LOCK (goom);
  goom->proportion = 1.0;
  goom->earliest_time = -1;
  GST_OBJECT_UNLOCK (goom);
207
208
}

Wim Taymans's avatar
Wim Taymans committed
209
210
static gboolean
gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps)
211
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
212
  GstGoom *goom;
David Schleef's avatar
David Schleef committed
213
  GstStructure *structure;
Wim Taymans's avatar
Wim Taymans committed
214
  gboolean res;
David Schleef's avatar
David Schleef committed
215

Wim Taymans's avatar
Wim Taymans committed
216
  goom = GST_GOOM (GST_PAD_PARENT (pad));
217

David Schleef's avatar
David Schleef committed
218
  structure = gst_caps_get_structure (caps, 0);
219

Wim Taymans's avatar
Wim Taymans committed
220
221
  res = gst_structure_get_int (structure, "channels", &goom->channels);
  res &= gst_structure_get_int (structure, "rate", &goom->rate);
Wim Taymans's avatar
Wim Taymans committed
222

Wim Taymans's avatar
Wim Taymans committed
223
224
225
  goom->bps = goom->channels * sizeof (gint16);

  return res;
Wim Taymans's avatar
Wim Taymans committed
226
227
}

Wim Taymans's avatar
Wim Taymans committed
228
229
static gboolean
gst_goom_src_setcaps (GstPad * pad, GstCaps * caps)
Wim Taymans's avatar
Wim Taymans committed
230
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
231
  GstGoom *goom;
David Schleef's avatar
David Schleef committed
232
233
  GstStructure *structure;

Wim Taymans's avatar
Wim Taymans committed
234
  goom = GST_GOOM (GST_PAD_PARENT (pad));
Wim Taymans's avatar
Wim Taymans committed
235

David Schleef's avatar
David Schleef committed
236
  structure = gst_caps_get_structure (caps, 0);
Wim Taymans's avatar
Wim Taymans committed
237

238
  if (!gst_structure_get_int (structure, "width", &goom->width) ||
Jan Schmidt's avatar
Jan Schmidt committed
239
240
241
      !gst_structure_get_int (structure, "height", &goom->height) ||
      !gst_structure_get_fraction (structure, "framerate", &goom->fps_n,
          &goom->fps_d))
242
243
    return FALSE;

244
  goom_set_resolution (&(goom->goomdata), goom->width, goom->height);
Wim Taymans's avatar
Wim Taymans committed
245

Wim Taymans's avatar
Wim Taymans committed
246
247
248
249
250
251
252
253
254
  /* size of the output buffer in bytes, depth is always 4 bytes */
  goom->outsize = goom->width * goom->height * 4;
  goom->duration =
      gst_util_uint64_scale_int (GST_SECOND, goom->fps_d, goom->fps_n);
  goom->spf = gst_util_uint64_scale_int (goom->rate, goom->fps_d, goom->fps_n);

  GST_DEBUG_OBJECT (goom, "dimension %dx%d, framerate %d/%d, spf %d",
      goom->width, goom->height, goom->fps_n, goom->fps_d, goom->spf);

Wim Taymans's avatar
Wim Taymans committed
255
  return TRUE;
256
257
}

Wim Taymans's avatar
Wim Taymans committed
258
static gboolean
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
259
gst_goom_src_negotiate (GstGoom * goom)
260
{
Wim Taymans's avatar
Wim Taymans committed
261
  GstCaps *othercaps, *target, *intersect;
262
  GstStructure *structure;
Wim Taymans's avatar
Wim Taymans committed
263
  const GstCaps *templ;
264

Wim Taymans's avatar
Wim Taymans committed
265
  templ = gst_pad_get_pad_template_caps (goom->srcpad);
266

Wim Taymans's avatar
Wim Taymans committed
267
268
269
270
271
  /* see what the peer can do */
  othercaps = gst_pad_peer_get_caps (goom->srcpad);
  if (othercaps) {
    intersect = gst_caps_intersect (othercaps, templ);
    gst_caps_unref (othercaps);
272

Wim Taymans's avatar
Wim Taymans committed
273
274
275
276
277
278
279
    if (gst_caps_is_empty (intersect))
      goto no_format;

    target = gst_caps_copy_nth (intersect, 0);
    gst_caps_unref (intersect);
  } else {
    target = gst_caps_ref ((GstCaps *) templ);
280
281
  }

Wim Taymans's avatar
Wim Taymans committed
282
  structure = gst_caps_get_structure (target, 0);
283
284
  gst_structure_fixate_field_nearest_int (structure, "width", 320);
  gst_structure_fixate_field_nearest_int (structure, "height", 240);
Jan Schmidt's avatar
Jan Schmidt committed
285
  gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1);
Wim Taymans's avatar
Wim Taymans committed
286
287
288
289
290
291
292
293
294
295
296
297

  gst_pad_set_caps (goom->srcpad, target);
  gst_caps_unref (target);

  return TRUE;

no_format:
  {
    gst_caps_unref (intersect);
    gst_caps_unref (othercaps);
    return FALSE;
  }
298
299
}

Wim Taymans's avatar
Wim Taymans committed
300
static gboolean
Wim Taymans's avatar
Wim Taymans committed
301
gst_goom_src_event (GstPad * pad, GstEvent * event)
302
{
Wim Taymans's avatar
Wim Taymans committed
303
  gboolean res;
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
304
  GstGoom *goom;
305

Wim Taymans's avatar
Wim Taymans committed
306
  goom = GST_GOOM (gst_pad_get_parent (pad));
Wim Taymans's avatar
Wim Taymans committed
307

Wim Taymans's avatar
Wim Taymans committed
308
  switch (GST_EVENT_TYPE (event)) {
Wim Taymans's avatar
Wim Taymans committed
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
    case GST_EVENT_QOS:
    {
      gdouble proportion;
      GstClockTimeDiff diff;
      GstClockTime timestamp;

      gst_event_parse_qos (event, &proportion, &diff, &timestamp);

      /* save stuff for the _chain() function */
      GST_OBJECT_LOCK (goom);
      goom->proportion = proportion;
      if (diff >= 0)
        /* we're late, this is a good estimate for next displayable
         * frame (see part-qos.txt) */
        goom->earliest_time = timestamp + 2 * diff + goom->duration;
      else
        goom->earliest_time = timestamp + diff;
      GST_OBJECT_UNLOCK (goom);

      res = gst_pad_push_event (goom->sinkpad, event);
      break;
    }
    default:
      res = gst_pad_push_event (goom->sinkpad, event);
      break;
  }
  gst_object_unref (goom);

  return res;
}

static gboolean
gst_goom_sink_event (GstPad * pad, GstEvent * event)
{
  gboolean res;
  GstGoom *goom;

  goom = GST_GOOM (gst_pad_get_parent (pad));

  switch (GST_EVENT_TYPE (event)) {
    case GST_EVENT_FLUSH_START:
      res = gst_pad_push_event (goom->srcpad, event);
      break;
    case GST_EVENT_FLUSH_STOP:
      gst_goom_reset (goom);
      res = gst_pad_push_event (goom->srcpad, event);
      break;
356
    case GST_EVENT_NEWSEGMENT:
Wim Taymans's avatar
Wim Taymans committed
357
    {
358
      GstFormat format;
Wim Taymans's avatar
Wim Taymans committed
359
360
361
362
363
364
365
366
367
      gdouble rate, arate;
      gint64 start, stop, time;
      gboolean update;

      /* the newsegment values are used to clip the input samples
       * and to convert the incomming timestamps to running time so
       * we can do QoS */
      gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
          &start, &stop, &time);
Wim Taymans's avatar
Wim Taymans committed
368

Wim Taymans's avatar
Wim Taymans committed
369
370
371
372
373
374
      /* now configure the values */
      gst_segment_set_newsegment_full (&goom->segment, update,
          rate, arate, format, start, stop, time);

      res = gst_pad_push_event (goom->srcpad, event);
      break;
Wim Taymans's avatar
Wim Taymans committed
375
    }
Wim Taymans's avatar
Wim Taymans committed
376
    default:
Wim Taymans's avatar
Wim Taymans committed
377
      res = gst_pad_push_event (goom->srcpad, event);
Wim Taymans's avatar
Wim Taymans committed
378
      break;
Wim Taymans's avatar
Wim Taymans committed
379
  }
Wim Taymans's avatar
Wim Taymans committed
380
381
  gst_object_unref (goom);

Wim Taymans's avatar
Wim Taymans committed
382
383
  return res;
}
Wim Taymans's avatar
Wim Taymans committed
384

Wim Taymans's avatar
Wim Taymans committed
385
static GstFlowReturn
Wim Taymans's avatar
Wim Taymans committed
386
get_buffer (GstGoom * goom, GstBuffer ** outbuf)
Wim Taymans's avatar
Wim Taymans committed
387
388
{
  GstFlowReturn ret;
Wim Taymans's avatar
Wim Taymans committed
389

Wim Taymans's avatar
Wim Taymans committed
390
391
392
393
  if (GST_PAD_CAPS (goom->srcpad) == NULL) {
    if (!gst_goom_src_negotiate (goom))
      return GST_FLOW_NOT_NEGOTIATED;
  }
Wim Taymans's avatar
Wim Taymans committed
394

Wim Taymans's avatar
Wim Taymans committed
395
396
  GST_DEBUG_OBJECT (goom, "allocating output buffer with caps %"
      GST_PTR_FORMAT, GST_PAD_CAPS (goom->srcpad));
397

Wim Taymans's avatar
Wim Taymans committed
398
399
400
401
  ret =
      gst_pad_alloc_buffer_and_set_caps (goom->srcpad,
      GST_BUFFER_OFFSET_NONE, goom->outsize,
      GST_PAD_CAPS (goom->srcpad), outbuf);
402

Wim Taymans's avatar
Wim Taymans committed
403
404
  if (ret != GST_FLOW_OK)
    return ret;
Wim Taymans's avatar
Wim Taymans committed
405

Wim Taymans's avatar
Wim Taymans committed
406
407
  if (*outbuf == NULL)
    return GST_FLOW_ERROR;
408

Wim Taymans's avatar
Wim Taymans committed
409
410
  return GST_FLOW_OK;
}
411

Wim Taymans's avatar
Wim Taymans committed
412
413
414
415
416
417
418
static GstFlowReturn
gst_goom_chain (GstPad * pad, GstBuffer * buffer)
{
  GstGoom *goom;
  GstFlowReturn ret;
  GstBuffer *outbuf = NULL;
  guint avail;
419

Wim Taymans's avatar
Wim Taymans committed
420
  goom = GST_GOOM (gst_pad_get_parent (pad));
Wim Taymans's avatar
Wim Taymans committed
421

Wim Taymans's avatar
Wim Taymans committed
422
423
  /* If we don't have an output format yet, preallocate a buffer to try and
   * set one */
424
  if (GST_PAD_CAPS (goom->srcpad) == NULL) {
Wim Taymans's avatar
Wim Taymans committed
425
426
427
428
429
430
431
432
433
434
435
    ret = get_buffer (goom, &outbuf);
    if (ret != GST_FLOW_OK) {
      gst_buffer_unref (buffer);
      goto beach;
    }
  }

  /* don't try to combine samples from discont buffer */
  if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
    gst_adapter_clear (goom->adapter);
    goom->next_ts = -1;
Wim Taymans's avatar
Wim Taymans committed
436
437
  }

Wim Taymans's avatar
Wim Taymans committed
438
439
440
441
442
443
444
445
446
447
448
449
  /* Match timestamps from the incoming audio */
  if (GST_BUFFER_TIMESTAMP (buffer) != GST_CLOCK_TIME_NONE)
    goom->next_ts = GST_BUFFER_TIMESTAMP (buffer);

  GST_DEBUG_OBJECT (goom,
      "Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
      GST_BUFFER_SIZE (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));

  gst_adapter_push (goom->adapter, buffer);

  ret = GST_FLOW_OK;

450
  /* Collect samples until we have enough for an output frame */
Wim Taymans's avatar
Wim Taymans committed
451
452
453
  avail = gst_adapter_available (goom->adapter);
  GST_DEBUG_OBJECT (goom, "avail now %u", avail);
  while (avail > MAX (GOOM_SAMPLES, goom->spf) * goom->bps) {
Wim Taymans's avatar
Wim Taymans committed
454
    const guint16 *data;
Wim Taymans's avatar
Wim Taymans committed
455
    gboolean need_skip;
456
457
458
    guchar *out_frame;
    gint i;

Wim Taymans's avatar
Wim Taymans committed
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
    GST_DEBUG_OBJECT (goom, "processing buffer");

    if (goom->next_ts != -1) {
      gint64 qostime;

      qostime = gst_segment_to_running_time (&goom->segment, GST_FORMAT_TIME,
          goom->next_ts);

      GST_OBJECT_LOCK (goom);
      /* check for QoS, don't compute buffers that are known to be late */
      need_skip = goom->earliest_time != -1 && qostime <= goom->earliest_time;
      GST_OBJECT_UNLOCK (goom);

      if (need_skip) {
        GST_WARNING_OBJECT (goom,
            "QoS: skip ts: %" GST_TIME_FORMAT ", earliest: %" GST_TIME_FORMAT,
            GST_TIME_ARGS (qostime), GST_TIME_ARGS (goom->earliest_time));
        goto skip;
      }
    }

    data =
        (const guint16 *) gst_adapter_peek (goom->adapter,
        GOOM_SAMPLES * goom->bps);
Wim Taymans's avatar
Wim Taymans committed
483

484
485
486
487
488
489
490
491
492
493
494
    if (goom->channels == 2) {
      for (i = 0; i < GOOM_SAMPLES; i++) {
        goom->datain[0][i] = *data++;
        goom->datain[1][i] = *data++;
      }
    } else {
      for (i = 0; i < GOOM_SAMPLES; i++) {
        goom->datain[0][i] = *data;
        goom->datain[1][i] = *data++;
      }
    }
495

Wim Taymans's avatar
Wim Taymans committed
496
497
498
499
500
501
502
503
    /* alloc a buffer if we don't have one yet, this happens
     * when we pushed a buffer in this while loop before */
    if (outbuf == NULL) {
      ret = get_buffer (goom, &outbuf);
      if (ret != GST_FLOW_OK) {
        goto beach;
      }
    }
Wim Taymans's avatar
Wim Taymans committed
504

Wim Taymans's avatar
Wim Taymans committed
505
506
507
    GST_BUFFER_TIMESTAMP (outbuf) = goom->next_ts;
    GST_BUFFER_DURATION (outbuf) = goom->duration;
    GST_BUFFER_SIZE (outbuf) = goom->outsize;
Wim Taymans's avatar
Wim Taymans committed
508

509
    out_frame = (guchar *) goom_update (&(goom->goomdata), goom->datain);
Wim Taymans's avatar
Wim Taymans committed
510
511
512
513
514
515
516
517
    memcpy (GST_BUFFER_DATA (outbuf), out_frame, goom->outsize);

    GST_DEBUG ("Pushing frame with time=%" GST_TIME_FORMAT ", duration=%"
        GST_TIME_FORMAT, GST_TIME_ARGS (goom->next_ts),
        GST_TIME_ARGS (goom->duration));

    ret = gst_pad_push (goom->srcpad, outbuf);
    outbuf = NULL;
518

Wim Taymans's avatar
Wim Taymans committed
519
520
521
522
  skip:
    /* interpollate next timestamp */
    if (goom->next_ts != -1)
      goom->next_ts += goom->duration;
523

Wim Taymans's avatar
Wim Taymans committed
524
525
526
    GST_DEBUG_OBJECT (goom, "finished frame, flushing %u samples from input",
        goom->spf);
    gst_adapter_flush (goom->adapter, MIN (avail, goom->spf * goom->bps));
Wim Taymans's avatar
Wim Taymans committed
527
528
529
530

    if (ret != GST_FLOW_OK)
      break;

Wim Taymans's avatar
Wim Taymans committed
531
532
    avail = gst_adapter_available (goom->adapter);
    GST_DEBUG_OBJECT (goom, "avail now %u", avail);
533
  }
Wim Taymans's avatar
Wim Taymans committed
534
535
536
537
538
539
540
541

  if (outbuf != NULL)
    gst_buffer_unref (outbuf);

beach:
  gst_object_unref (goom);

  return ret;
542
543
}

544
545
static GstStateChangeReturn
gst_goom_change_state (GstElement * element, GstStateChange transition)
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
546
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
547
  GstGoom *goom = GST_GOOM (element);
548
  GstStateChangeReturn ret;
549

Wim Taymans's avatar
Wim Taymans committed
550
551

  switch (transition) {
552
    case GST_STATE_CHANGE_NULL_TO_READY:
553
      break;
554
    case GST_STATE_CHANGE_READY_TO_PAUSED:
Wim Taymans's avatar
Wim Taymans committed
555
      gst_goom_reset (goom);
556
557
558
559
560
      break;
    default:
      break;
  }

561
  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
Wim Taymans's avatar
Wim Taymans committed
562
563

  switch (transition) {
564
    case GST_STATE_CHANGE_PAUSED_TO_READY:
Wim Taymans's avatar
Wim Taymans committed
565
      break;
566
    case GST_STATE_CHANGE_READY_TO_NULL:
Wim Taymans's avatar
Wim Taymans committed
567
568
569
570
      break;
    default:
      break;
  }
571

Wim Taymans's avatar
Wim Taymans committed
572
  return ret;
573
574
}

575
static gboolean
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
576
plugin_init (GstPlugin * plugin)
577
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
578
  return gst_element_register (plugin, "goom", GST_RANK_NONE, GST_TYPE_GOOM);
579
580
}

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
581
582
583
584
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
    GST_VERSION_MINOR,
    "goom",
    "GOOM visualization filter",
585
    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)