gstgoom.c 16 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
/**
 * SECTION:element-goom
 * @see_also: synaesthesia
 *
25
 * Goom is an audio visualisation element. It creates warping structures
Jan Schmidt's avatar
Jan Schmidt committed
26
 * based on the incoming audio signal.
27 28
 *
 * <refsect2>
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
29
 * <title>Example launch line</title>
30
 * |[
31
 * gst-launch -v audiotestsrc ! goom ! ffmpegcolorspace ! xvimagesink
32
 * ]|
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
33 34 35
 * </refsect2>
 */

36 37 38
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
39

40
#include <string.h>
41
#include <gst/gst.h>
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
42
#include "gstgoom.h"
43
#include <gst/video/video.h>
44
#include "goom.h"
45

46 47 48
#include <liboil/liboil.h>

GST_DEBUG_CATEGORY (goom_debug);
49 50
#define GST_CAT_DEFAULT goom_debug

51
/* signals and args */
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
52 53
enum
{
54 55 56 57
  /* FILL ME */
  LAST_SIGNAL
};

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
58 59
enum
{
60 61
  ARG_0
      /* FILL ME */
62 63
};

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
64 65 66 67 68
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN)
    );
69

70 71 72
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
73
    GST_STATIC_CAPS ("audio/x-raw-int, "
74 75 76 77
        "endianness = (int) BYTE_ORDER, "
        "signed = (boolean) TRUE, "
        "width = (int) 16, "
        "depth = (int) 16, "
Wim Taymans's avatar
Wim Taymans committed
78
        "rate = (int) [ 8000, 96000 ], " "channels = (int) { 1, 2 }")
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
79 80 81
    );


Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
82 83 84
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
85
static void gst_goom_finalize (GObject * object);
86

87 88
static GstStateChangeReturn gst_goom_change_state (GstElement * element,
    GstStateChange transition);
89

Wim Taymans's avatar
Wim Taymans committed
90
static GstFlowReturn gst_goom_chain (GstPad * pad, GstBuffer * buffer);
Wim Taymans's avatar
Wim Taymans committed
91 92
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
93

94 95
static gboolean gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_goom_src_setcaps (GstPad * pad, GstCaps * caps);
96 97 98 99 100 101 102 103 104 105

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
106
      sizeof (GstGoomClass),
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
107 108
      (GBaseInitFunc) gst_goom_base_init,
      NULL,
109 110 111
      (GClassInitFunc) gst_goom_class_init,
      NULL,
      NULL,
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
112
      sizeof (GstGoom),
113 114 115
      0,
      (GInstanceInitFunc) gst_goom_init,
    };
116

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
117
    type = g_type_register_static (GST_TYPE_ELEMENT, "GstGoom", &info, 0);
118 119 120 121
  }
  return type;
}

Ronald S. Bultje's avatar
Ronald S. Bultje committed
122
static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
123
gst_goom_base_init (GstGoomClass * klass)
Ronald S. Bultje's avatar
Ronald S. Bultje committed
124 125 126
{
  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);

127 128 129 130
  gst_element_class_set_details_simple (element_class, "GOOM: what a GOOM!",
      "Visualization",
      "Takes frames of data and outputs video frames using the GOOM filter",
      "Wim Taymans <wim@fluendo.com>");
Ronald S. Bultje's avatar
Ronald S. Bultje committed
131
  gst_element_class_add_pad_template (element_class,
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
132
      gst_static_pad_template_get (&sink_template));
Ronald S. Bultje's avatar
Ronald S. Bultje committed
133
  gst_element_class_add_pad_template (element_class,
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
134
      gst_static_pad_template_get (&src_template));
Ronald S. Bultje's avatar
Ronald S. Bultje committed
135 136
}

137
static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
138
gst_goom_class_init (GstGoomClass * klass)
139 140 141 142
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
143 144
  gobject_class = (GObjectClass *) klass;
  gstelement_class = (GstElementClass *) klass;
145

146
  parent_class = g_type_class_peek_parent (klass);
147

Wim Taymans's avatar
Wim Taymans committed
148
  gobject_class->finalize = gst_goom_finalize;
149

150
  gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_goom_change_state);
151 152 153
}

static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
154
gst_goom_init (GstGoom * goom)
155 156
{
  /* create the sink and src pads */
157
  goom->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
158 159 160 161 162 163
  gst_pad_set_chain_function (goom->sinkpad,
      GST_DEBUG_FUNCPTR (gst_goom_chain));
  gst_pad_set_event_function (goom->sinkpad,
      GST_DEBUG_FUNCPTR (gst_goom_sink_event));
  gst_pad_set_setcaps_function (goom->sinkpad,
      GST_DEBUG_FUNCPTR (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");
167 168 169 170
  gst_pad_set_setcaps_function (goom->srcpad,
      GST_DEBUG_FUNCPTR (gst_goom_src_setcaps));
  gst_pad_set_event_function (goom->srcpad,
      GST_DEBUG_FUNCPTR (gst_goom_src_event));
Wim Taymans's avatar
Wim Taymans committed
171
  gst_element_add_pad (GST_ELEMENT (goom), goom->srcpad);
Wim Taymans's avatar
Wim Taymans committed
172

173 174
  goom->adapter = gst_adapter_new ();

175 176
  goom->width = 320;
  goom->height = 200;
177 178
  goom->fps_n = 25;             /* desired frame rate */
  goom->fps_d = 1;              /* desired frame rate */
Wim Taymans's avatar
Wim Taymans committed
179
  goom->channels = 0;
Wim Taymans's avatar
Wim Taymans committed
180 181
  goom->rate = 0;
  goom->duration = 0;
182

183
  goom->plugin = goom_init (goom->width, goom->height);
Wim Taymans's avatar
Wim Taymans committed
184 185 186
}

static void
Wim Taymans's avatar
Wim Taymans committed
187
gst_goom_finalize (GObject * object)
Wim Taymans's avatar
Wim Taymans committed
188
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
189
  GstGoom *goom = GST_GOOM (object);
190

191
  goom_close (goom->plugin);
192
  goom->plugin = NULL;
193

Wim Taymans's avatar
Wim Taymans committed
194
  g_object_unref (goom->adapter);
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
195

Wim Taymans's avatar
Wim Taymans committed
196 197 198 199 200 201 202 203 204 205 206 207 208 209
  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);
210 211
}

Wim Taymans's avatar
Wim Taymans committed
212 213
static gboolean
gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps)
214
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
215
  GstGoom *goom;
David Schleef's avatar
David Schleef committed
216
  GstStructure *structure;
Wim Taymans's avatar
Wim Taymans committed
217
  gboolean res;
David Schleef's avatar
David Schleef committed
218

Wim Taymans's avatar
Wim Taymans committed
219
  goom = GST_GOOM (GST_PAD_PARENT (pad));
220

David Schleef's avatar
David Schleef committed
221
  structure = gst_caps_get_structure (caps, 0);
222

Wim Taymans's avatar
Wim Taymans committed
223 224
  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
225

Wim Taymans's avatar
Wim Taymans committed
226 227 228
  goom->bps = goom->channels * sizeof (gint16);

  return res;
Wim Taymans's avatar
Wim Taymans committed
229 230
}

Wim Taymans's avatar
Wim Taymans committed
231 232
static gboolean
gst_goom_src_setcaps (GstPad * pad, GstCaps * caps)
Wim Taymans's avatar
Wim Taymans committed
233
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
234
  GstGoom *goom;
David Schleef's avatar
David Schleef committed
235 236
  GstStructure *structure;

Wim Taymans's avatar
Wim Taymans committed
237
  goom = GST_GOOM (GST_PAD_PARENT (pad));
Wim Taymans's avatar
Wim Taymans committed
238

David Schleef's avatar
David Schleef committed
239
  structure = gst_caps_get_structure (caps, 0);
Wim Taymans's avatar
Wim Taymans committed
240

241
  if (!gst_structure_get_int (structure, "width", &goom->width) ||
Jan Schmidt's avatar
Jan Schmidt committed
242 243 244
      !gst_structure_get_int (structure, "height", &goom->height) ||
      !gst_structure_get_fraction (structure, "framerate", &goom->fps_n,
          &goom->fps_d))
245 246
    return FALSE;

247
  goom_set_resolution (goom->plugin, goom->width, goom->height);
Wim Taymans's avatar
Wim Taymans committed
248

Wim Taymans's avatar
Wim Taymans committed
249 250 251 252 253
  /* 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);
254
  goom->bpf = goom->spf * goom->bps;
Wim Taymans's avatar
Wim Taymans committed
255 256 257 258

  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
259
  return TRUE;
260 261
}

Wim Taymans's avatar
Wim Taymans committed
262
static gboolean
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
263
gst_goom_src_negotiate (GstGoom * goom)
264
{
Wim Taymans's avatar
Wim Taymans committed
265
  GstCaps *othercaps, *target, *intersect;
266
  GstStructure *structure;
Wim Taymans's avatar
Wim Taymans committed
267
  const GstCaps *templ;
268

Wim Taymans's avatar
Wim Taymans committed
269
  templ = gst_pad_get_pad_template_caps (goom->srcpad);
270

271 272
  GST_DEBUG_OBJECT (goom, "performing negotiation");

Wim Taymans's avatar
Wim Taymans committed
273 274 275 276 277
  /* 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);
278

Wim Taymans's avatar
Wim Taymans committed
279 280 281 282 283 284 285
    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);
286 287
  }

Wim Taymans's avatar
Wim Taymans committed
288
  structure = gst_caps_get_structure (target, 0);
289 290
  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
291
  gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1);
Wim Taymans's avatar
Wim Taymans committed
292 293 294 295 296 297 298 299 300 301 302

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

  return TRUE;

no_format:
  {
    gst_caps_unref (intersect);
    return FALSE;
  }
303 304
}

Wim Taymans's avatar
Wim Taymans committed
305
static gboolean
Wim Taymans's avatar
Wim Taymans committed
306
gst_goom_src_event (GstPad * pad, GstEvent * event)
307
{
Wim Taymans's avatar
Wim Taymans committed
308
  gboolean res;
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
309
  GstGoom *goom;
310

Wim Taymans's avatar
Wim Taymans committed
311
  goom = GST_GOOM (gst_pad_get_parent (pad));
Wim Taymans's avatar
Wim Taymans committed
312

Wim Taymans's avatar
Wim Taymans committed
313
  switch (GST_EVENT_TYPE (event)) {
Wim Taymans's avatar
Wim Taymans committed
314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360
    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;
361
    case GST_EVENT_NEWSEGMENT:
Wim Taymans's avatar
Wim Taymans committed
362
    {
363
      GstFormat format;
Wim Taymans's avatar
Wim Taymans committed
364 365 366 367 368 369 370 371 372
      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
373

Wim Taymans's avatar
Wim Taymans committed
374 375 376 377 378 379
      /* 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
380
    }
Wim Taymans's avatar
Wim Taymans committed
381
    default:
Wim Taymans's avatar
Wim Taymans committed
382
      res = gst_pad_push_event (goom->srcpad, event);
Wim Taymans's avatar
Wim Taymans committed
383
      break;
Wim Taymans's avatar
Wim Taymans committed
384
  }
Wim Taymans's avatar
Wim Taymans committed
385 386
  gst_object_unref (goom);

Wim Taymans's avatar
Wim Taymans committed
387 388
  return res;
}
Wim Taymans's avatar
Wim Taymans committed
389

Wim Taymans's avatar
Wim Taymans committed
390
static GstFlowReturn
Wim Taymans's avatar
Wim Taymans committed
391
get_buffer (GstGoom * goom, GstBuffer ** outbuf)
Wim Taymans's avatar
Wim Taymans committed
392 393
{
  GstFlowReturn ret;
Wim Taymans's avatar
Wim Taymans committed
394

Wim Taymans's avatar
Wim Taymans committed
395 396 397 398
  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
399

Wim Taymans's avatar
Wim Taymans committed
400 401
  GST_DEBUG_OBJECT (goom, "allocating output buffer with caps %"
      GST_PTR_FORMAT, GST_PAD_CAPS (goom->srcpad));
402

Wim Taymans's avatar
Wim Taymans committed
403 404 405 406 407 408
  ret =
      gst_pad_alloc_buffer_and_set_caps (goom->srcpad,
      GST_BUFFER_OFFSET_NONE, goom->outsize,
      GST_PAD_CAPS (goom->srcpad), outbuf);
  if (ret != GST_FLOW_OK)
    return ret;
Wim Taymans's avatar
Wim Taymans committed
409

Wim Taymans's avatar
Wim Taymans committed
410 411
  return GST_FLOW_OK;
}
412

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

446
  /* Collect samples until we have enough for an output frame */
Wim Taymans's avatar
Wim Taymans committed
447 448 449 450
  gst_adapter_push (goom->adapter, buffer);

  ret = GST_FLOW_OK;

451
  while (TRUE) {
Wim Taymans's avatar
Wim Taymans committed
452
    const guint16 *data;
Wim Taymans's avatar
Wim Taymans committed
453
    gboolean need_skip;
454 455
    guchar *out_frame;
    gint i;
456 457 458 459 460 461 462 463 464 465 466 467
    guint avail, to_flush;

    avail = gst_adapter_available (goom->adapter);
    GST_DEBUG_OBJECT (goom, "avail now %u", avail);

    /* we need GOOM_SAMPLES to get a meaningful result from goom. */
    if (avail < (GOOM_SAMPLES * goom->bps))
      break;

    /* we also need enough samples to produce one frame at least */
    if (avail < goom->bpf)
      break;
468

Wim Taymans's avatar
Wim Taymans committed
469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489
    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;
      }
    }

490
    /* get next GOOM_SAMPLES, we have at least this amount of samples */
Wim Taymans's avatar
Wim Taymans committed
491 492 493
    data =
        (const guint16 *) gst_adapter_peek (goom->adapter,
        GOOM_SAMPLES * goom->bps);
Wim Taymans's avatar
Wim Taymans committed
494

495 496 497 498 499 500 501 502 503 504 505
    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++;
      }
    }
506

Wim Taymans's avatar
Wim Taymans committed
507 508 509 510 511 512 513 514
    /* 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
515

Wim Taymans's avatar
Wim Taymans committed
516 517 518
    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
519

520
    out_frame = (guchar *) goom_update (goom->plugin, goom->datain, 0, 0);
Wim Taymans's avatar
Wim Taymans committed
521 522 523 524 525 526 527 528
    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;
529

Wim Taymans's avatar
Wim Taymans committed
530 531 532 533
  skip:
    /* interpollate next timestamp */
    if (goom->next_ts != -1)
      goom->next_ts += goom->duration;
534

535 536 537 538 539 540 541
    /* Now flush the samples we needed for this frame, which might be more than
     * the samples we used (GOOM_SAMPLES). */
    to_flush = goom->bpf;

    GST_DEBUG_OBJECT (goom, "finished frame, flushing %u bytes from input",
        to_flush);
    gst_adapter_flush (goom->adapter, to_flush);
Wim Taymans's avatar
Wim Taymans committed
542 543 544

    if (ret != GST_FLOW_OK)
      break;
545
  }
Wim Taymans's avatar
Wim Taymans committed
546 547 548 549 550 551 552 553

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

beach:
  gst_object_unref (goom);

  return ret;
554 555
}

556 557
static GstStateChangeReturn
gst_goom_change_state (GstElement * element, GstStateChange transition)
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
558
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
559
  GstGoom *goom = GST_GOOM (element);
560
  GstStateChangeReturn ret;
561

Wim Taymans's avatar
Wim Taymans committed
562
  switch (transition) {
563
    case GST_STATE_CHANGE_NULL_TO_READY:
564
      break;
565
    case GST_STATE_CHANGE_READY_TO_PAUSED:
Wim Taymans's avatar
Wim Taymans committed
566
      gst_goom_reset (goom);
567 568 569 570 571
      break;
    default:
      break;
  }

572
  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
Wim Taymans's avatar
Wim Taymans committed
573 574

  switch (transition) {
575
    case GST_STATE_CHANGE_PAUSED_TO_READY:
Wim Taymans's avatar
Wim Taymans committed
576
      break;
577
    case GST_STATE_CHANGE_READY_TO_NULL:
Wim Taymans's avatar
Wim Taymans committed
578 579 580 581
      break;
    default:
      break;
  }
582

Wim Taymans's avatar
Wim Taymans committed
583
  return ret;
584 585
}

586
static gboolean
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
587
plugin_init (GstPlugin * plugin)
588
{
589 590 591 592
  GST_DEBUG_CATEGORY_INIT (goom_debug, "goom", 0, "goom visualisation element");

  oil_init ();

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
593
  return gst_element_register (plugin, "goom", GST_RANK_NONE, GST_TYPE_GOOM);
594 595
}

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
596 597 598 599
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
    GST_VERSION_MINOR,
    "goom",
    "GOOM visualization filter",
600
    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)