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)