gstgoom.c 18.9 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>
Wim Taymans's avatar
Wim Taymans committed
4
 *           (C) <2011> Wim Taymans <wim.taymans at gmail dot com>
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
 *
 * 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
22 23 24 25
/**
 * SECTION:element-goom
 * @see_also: synaesthesia
 *
26
 * Goom is an audio visualisation element. It creates warping structures
Jan Schmidt's avatar
Jan Schmidt committed
27
 * based on the incoming audio signal.
28 29
 *
 * <refsect2>
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
30
 * <title>Example launch line</title>
31
 * |[
Wim Taymans's avatar
Wim Taymans committed
32
 * gst-launch -v audiotestsrc ! goom ! videoconvert ! xvimagesink
33
 * ]|
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
34 35 36
 * </refsect2>
 */

37 38 39
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
40

41
#include <string.h>
42
#include <gst/gst.h>
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
43
#include "gstgoom.h"
44
#include <gst/video/video.h>
Wim Taymans's avatar
Wim Taymans committed
45
#include <gst/audio/audio.h>
46
#include "goom.h"
47

48 49 50 51
#if HAVE_ORC
#include <orc/orc.h>
#endif

52
GST_DEBUG_CATEGORY (goom_debug);
53 54
#define GST_CAT_DEFAULT goom_debug

55 56 57 58 59
#define DEFAULT_WIDTH  320
#define DEFAULT_HEIGHT 240
#define DEFAULT_FPS_N  25
#define DEFAULT_FPS_D  1

60
/* signals and args */
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
61 62
enum
{
63 64 65 66
  /* FILL ME */
  LAST_SIGNAL
};

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
67 68
enum
{
69 70
  ARG_0
      /* FILL ME */
71 72
};

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
73 74 75
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
Wim Taymans's avatar
Wim Taymans committed
76 77 78 79 80
#if G_BYTE_ORDER == G_BIG_ENDIAN
    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("xRGB"))
#else
    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("BGRx"))
#endif
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
81
    );
82

83 84 85
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 */
Wim Taymans's avatar
Wim Taymans committed
86 87
    GST_STATIC_CAPS ("audio/x-raw, "
        "format = (string) " GST_AUDIO_NE (S16) ", "
Wim Taymans's avatar
Wim Taymans committed
88
        "rate = (int) [ 8000, 96000 ], " "channels = (int) { 1, 2 }")
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
89 90 91
    );


Wim Taymans's avatar
Wim Taymans committed
92
static void gst_goom_finalize (GObject * object);
93

94 95
static GstStateChangeReturn gst_goom_change_state (GstElement * element,
    GstStateChange transition);
96

Wim Taymans's avatar
Wim Taymans committed
97
static GstFlowReturn gst_goom_chain (GstPad * pad, GstBuffer * buffer);
Wim Taymans's avatar
Wim Taymans committed
98 99
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
100

101
static gboolean gst_goom_src_query (GstPad * pad, GstQuery * query);
102
static gboolean gst_goom_sink_query (GstPad * pad, GstQuery * query);
103

Wim Taymans's avatar
Wim Taymans committed
104 105
#define gst_goom_parent_class parent_class
G_DEFINE_TYPE (GstGoom, gst_goom, GST_TYPE_ELEMENT);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
106

107
static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
108
gst_goom_class_init (GstGoomClass * klass)
109 110 111 112
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
113 114
  gobject_class = (GObjectClass *) klass;
  gstelement_class = (GstElementClass *) klass;
115

Wim Taymans's avatar
Wim Taymans committed
116
  gobject_class->finalize = gst_goom_finalize;
117

Wim Taymans's avatar
Wim Taymans committed
118 119 120 121 122 123 124 125 126
  gst_element_class_set_details_simple (gstelement_class, "GOOM: what a GOOM!",
      "Visualization",
      "Takes frames of data and outputs video frames using the GOOM filter",
      "Wim Taymans <wim@fluendo.com>");
  gst_element_class_add_pad_template (gstelement_class,
      gst_static_pad_template_get (&sink_template));
  gst_element_class_add_pad_template (gstelement_class,
      gst_static_pad_template_get (&src_template));

127
  gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_goom_change_state);
128 129 130
}

static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
131
gst_goom_init (GstGoom * goom)
132 133
{
  /* create the sink and src pads */
134
  goom->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
135 136 137 138
  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));
139 140
  gst_pad_set_query_function (goom->sinkpad,
      GST_DEBUG_FUNCPTR (gst_goom_sink_query));
Wim Taymans's avatar
Wim Taymans committed
141 142 143
  gst_element_add_pad (GST_ELEMENT (goom), goom->sinkpad);

  goom->srcpad = gst_pad_new_from_static_template (&src_template, "src");
144 145
  gst_pad_set_event_function (goom->srcpad,
      GST_DEBUG_FUNCPTR (gst_goom_src_event));
146 147
  gst_pad_set_query_function (goom->srcpad,
      GST_DEBUG_FUNCPTR (gst_goom_src_query));
Wim Taymans's avatar
Wim Taymans committed
148
  gst_element_add_pad (GST_ELEMENT (goom), goom->srcpad);
Wim Taymans's avatar
Wim Taymans committed
149

150 151
  goom->adapter = gst_adapter_new ();

152 153 154 155
  goom->width = DEFAULT_WIDTH;
  goom->height = DEFAULT_HEIGHT;
  goom->fps_n = DEFAULT_FPS_N;  /* desired frame rate */
  goom->fps_d = DEFAULT_FPS_D;  /* desired frame rate */
Wim Taymans's avatar
Wim Taymans committed
156
  goom->channels = 0;
Wim Taymans's avatar
Wim Taymans committed
157 158
  goom->rate = 0;
  goom->duration = 0;
159

160
  goom->plugin = goom_init (goom->width, goom->height);
Wim Taymans's avatar
Wim Taymans committed
161 162 163
}

static void
Wim Taymans's avatar
Wim Taymans committed
164
gst_goom_finalize (GObject * object)
Wim Taymans's avatar
Wim Taymans committed
165
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
166
  GstGoom *goom = GST_GOOM (object);
167

168
  goom_close (goom->plugin);
169
  goom->plugin = NULL;
170

Wim Taymans's avatar
Wim Taymans committed
171
  g_object_unref (goom->adapter);
Wim Taymans's avatar
Wim Taymans committed
172 173
  if (goom->pool)
    gst_object_unref (goom->pool);
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
174

Wim Taymans's avatar
Wim Taymans committed
175 176 177 178 179 180 181 182 183 184 185 186 187
  G_OBJECT_CLASS (parent_class)->finalize (object);
}

static void
gst_goom_reset (GstGoom * goom)
{
  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);
188 189
}

Wim Taymans's avatar
Wim Taymans committed
190
static gboolean
Wim Taymans's avatar
Wim Taymans committed
191
gst_goom_sink_setcaps (GstGoom * goom, GstCaps * caps)
192
{
David Schleef's avatar
David Schleef committed
193 194 195
  GstStructure *structure;

  structure = gst_caps_get_structure (caps, 0);
196

197 198
  gst_structure_get_int (structure, "channels", &goom->channels);
  gst_structure_get_int (structure, "rate", &goom->rate);
Wim Taymans's avatar
Wim Taymans committed
199

Wim Taymans's avatar
Wim Taymans committed
200 201
  goom->bps = goom->channels * sizeof (gint16);

Wim Taymans's avatar
Wim Taymans committed
202
  return TRUE;
Wim Taymans's avatar
Wim Taymans committed
203 204
}

Wim Taymans's avatar
Wim Taymans committed
205
static gboolean
Wim Taymans's avatar
Wim Taymans committed
206
gst_goom_src_setcaps (GstGoom * goom, GstCaps * caps)
Wim Taymans's avatar
Wim Taymans committed
207
{
David Schleef's avatar
David Schleef committed
208
  GstStructure *structure;
Wim Taymans's avatar
Wim Taymans committed
209
  gboolean res;
Wim Taymans's avatar
Wim Taymans committed
210

David Schleef's avatar
David Schleef committed
211
  structure = gst_caps_get_structure (caps, 0);
212
  if (!gst_structure_get_int (structure, "width", &goom->width) ||
Jan Schmidt's avatar
Jan Schmidt committed
213 214 215
      !gst_structure_get_int (structure, "height", &goom->height) ||
      !gst_structure_get_fraction (structure, "framerate", &goom->fps_n,
          &goom->fps_d))
Wim Taymans's avatar
Wim Taymans committed
216
    goto error;
217

218
  goom_set_resolution (goom->plugin, goom->width, goom->height);
Wim Taymans's avatar
Wim Taymans committed
219

Wim Taymans's avatar
Wim Taymans committed
220 221 222 223 224
  /* 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);
225
  goom->bpf = goom->spf * goom->bps;
Wim Taymans's avatar
Wim Taymans committed
226 227 228 229

  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
230 231 232 233 234 235 236 237 238 239
  res = gst_pad_push_event (goom->srcpad, gst_event_new_caps (caps));

  return res;

  /* ERRORS */
error:
  {
    GST_DEBUG_OBJECT (goom, "error parsing caps");
    return FALSE;
  }
240 241
}

Wim Taymans's avatar
Wim Taymans committed
242
static gboolean
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
243
gst_goom_src_negotiate (GstGoom * goom)
244
{
245
  GstCaps *othercaps, *target;
246
  GstStructure *structure;
Wim Taymans's avatar
Wim Taymans committed
247 248 249 250
  GstCaps *templ;
  GstQuery *query;
  GstBufferPool *pool = NULL;
  guint size, min, max, prefix, alignment;
251

Wim Taymans's avatar
Wim Taymans committed
252
  templ = gst_pad_get_pad_template_caps (goom->srcpad);
253

254 255
  GST_DEBUG_OBJECT (goom, "performing negotiation");

Wim Taymans's avatar
Wim Taymans committed
256
  /* see what the peer can do */
Wim Taymans's avatar
Wim Taymans committed
257
  othercaps = gst_pad_peer_get_caps (goom->srcpad, NULL);
Wim Taymans's avatar
Wim Taymans committed
258
  if (othercaps) {
259
    target = gst_caps_intersect (othercaps, templ);
Wim Taymans's avatar
Wim Taymans committed
260
    gst_caps_unref (othercaps);
Wim Taymans's avatar
Wim Taymans committed
261
    gst_caps_unref (templ);
262

263
    if (gst_caps_is_empty (target))
Wim Taymans's avatar
Wim Taymans committed
264 265
      goto no_format;

266
    gst_caps_truncate (target);
Wim Taymans's avatar
Wim Taymans committed
267
  } else {
Wim Taymans's avatar
Wim Taymans committed
268
    target = templ;
269 270
  }

Wim Taymans's avatar
Wim Taymans committed
271
  structure = gst_caps_get_structure (target, 0);
272 273 274 275
  gst_structure_fixate_field_nearest_int (structure, "width", DEFAULT_WIDTH);
  gst_structure_fixate_field_nearest_int (structure, "height", DEFAULT_HEIGHT);
  gst_structure_fixate_field_nearest_fraction (structure, "framerate",
      DEFAULT_FPS_N, DEFAULT_FPS_D);
Wim Taymans's avatar
Wim Taymans committed
276

277
  gst_goom_src_setcaps (goom, target);
Wim Taymans's avatar
Wim Taymans committed
278 279 280 281 282 283 284 285 286 287 288 289 290

  /* try to get a bufferpool now */
  /* find a pool for the negotiated caps now */
  query = gst_query_new_allocation (target, TRUE);

  if (gst_pad_peer_query (goom->srcpad, query)) {
    /* we got configuration from our peer, parse them */
    gst_query_parse_allocation_params (query, &size, &min, &max, &prefix,
        &alignment, &pool);
  } else {
    size = goom->outsize;
    min = max = 0;
    prefix = 0;
291
    alignment = 0;
Wim Taymans's avatar
Wim Taymans committed
292 293 294 295 296 297 298 299 300
  }

  if (pool == NULL) {
    GstStructure *config;

    /* we did not get a pool, make one ourselves then */
    pool = gst_buffer_pool_new ();

    config = gst_buffer_pool_get_config (pool);
Wim Taymans's avatar
Wim Taymans committed
301
    gst_buffer_pool_config_set (config, target, size, min, max, prefix,
Wim Taymans's avatar
Wim Taymans committed
302 303 304 305 306 307 308 309 310 311 312
        alignment);
    gst_buffer_pool_set_config (pool, config);
  }

  if (goom->pool)
    gst_object_unref (goom->pool);
  goom->pool = pool;

  /* and activate */
  gst_buffer_pool_set_active (pool, TRUE);

Wim Taymans's avatar
Wim Taymans committed
313 314 315 316 317 318
  gst_caps_unref (target);

  return TRUE;

no_format:
  {
319
    gst_caps_unref (target);
Wim Taymans's avatar
Wim Taymans committed
320 321
    return FALSE;
  }
322 323
}

Wim Taymans's avatar
Wim Taymans committed
324
static gboolean
Wim Taymans's avatar
Wim Taymans committed
325
gst_goom_src_event (GstPad * pad, GstEvent * event)
326
{
Wim Taymans's avatar
Wim Taymans committed
327
  gboolean res;
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
328
  GstGoom *goom;
329

Wim Taymans's avatar
Wim Taymans committed
330
  goom = GST_GOOM (gst_pad_get_parent (pad));
Wim Taymans's avatar
Wim Taymans committed
331

Wim Taymans's avatar
Wim Taymans committed
332
  switch (GST_EVENT_TYPE (event)) {
Wim Taymans's avatar
Wim Taymans committed
333 334 335 336 337 338
    case GST_EVENT_QOS:
    {
      gdouble proportion;
      GstClockTimeDiff diff;
      GstClockTime timestamp;

Wim Taymans's avatar
Wim Taymans committed
339
      gst_event_parse_qos (event, NULL, &proportion, &diff, &timestamp);
Wim Taymans's avatar
Wim Taymans committed
340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372

      /* 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)) {
Wim Taymans's avatar
Wim Taymans committed
373 374 375 376 377 378 379 380
    case GST_EVENT_CAPS:
    {
      GstCaps *caps;

      gst_event_parse_caps (event, &caps);
      res = gst_goom_sink_setcaps (goom, caps);
      break;
    }
Wim Taymans's avatar
Wim Taymans committed
381 382 383 384 385 386 387
    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;
Wim Taymans's avatar
Wim Taymans committed
388
    case GST_EVENT_SEGMENT:
Wim Taymans's avatar
Wim Taymans committed
389
    {
Wim Taymans's avatar
Wim Taymans committed
390 391 392
      /* the newsegment values are used to clip the input samples
       * and to convert the incomming timestamps to running time so
       * we can do QoS */
Wim Taymans's avatar
Wim Taymans committed
393
      gst_event_copy_segment (event, &goom->segment);
Wim Taymans's avatar
Wim Taymans committed
394 395 396

      res = gst_pad_push_event (goom->srcpad, event);
      break;
Wim Taymans's avatar
Wim Taymans committed
397
    }
Wim Taymans's avatar
Wim Taymans committed
398
    default:
Wim Taymans's avatar
Wim Taymans committed
399
      res = gst_pad_push_event (goom->srcpad, event);
Wim Taymans's avatar
Wim Taymans committed
400
      break;
Wim Taymans's avatar
Wim Taymans committed
401
  }
Wim Taymans's avatar
Wim Taymans committed
402 403
  gst_object_unref (goom);

Wim Taymans's avatar
Wim Taymans committed
404 405
  return res;
}
Wim Taymans's avatar
Wim Taymans committed
406

407 408 409
static gboolean
gst_goom_src_query (GstPad * pad, GstQuery * query)
{
410
  gboolean res = FALSE;
411 412 413 414 415 416 417 418 419 420 421 422 423 424
  GstGoom *goom;

  goom = GST_GOOM (gst_pad_get_parent (pad));

  switch (GST_QUERY_TYPE (query)) {
    case GST_QUERY_LATENCY:
    {
      /* We need to send the query upstream and add the returned latency to our
       * own */
      GstClockTime min_latency, max_latency;
      gboolean us_live;
      GstClockTime our_latency;
      guint max_samples;

425 426 427
      if (goom->rate == 0)
        break;

428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444
      if ((res = gst_pad_peer_query (goom->sinkpad, query))) {
        gst_query_parse_latency (query, &us_live, &min_latency, &max_latency);

        GST_DEBUG_OBJECT (goom, "Peer latency: min %"
            GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
            GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));

        /* the max samples we must buffer buffer */
        max_samples = MAX (GOOM_SAMPLES, goom->spf);
        our_latency =
            gst_util_uint64_scale_int (max_samples, GST_SECOND, goom->rate);

        GST_DEBUG_OBJECT (goom, "Our latency: %" GST_TIME_FORMAT,
            GST_TIME_ARGS (our_latency));

        /* we add some latency but only if we need to buffer more than what
         * upstream gives us */
445
        min_latency += our_latency;
446
        if (max_latency != -1)
447
          max_latency += our_latency;
448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466

        GST_DEBUG_OBJECT (goom, "Calculated total latency : min %"
            GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
            GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));

        gst_query_set_latency (query, TRUE, min_latency, max_latency);
      }
      break;
    }
    default:
      res = gst_pad_peer_query (goom->sinkpad, query);
      break;
  }

  gst_object_unref (goom);

  return res;
}

467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489
static gboolean
gst_goom_sink_query (GstPad * pad, GstQuery * query)
{
  gboolean res = FALSE;
  GstGoom *goom;

  goom = GST_GOOM (gst_pad_get_parent (pad));

  switch (GST_QUERY_TYPE (query)) {
    case GST_QUERY_ALLOCATION:
      /* we convert audio to video, don't pass allocation queries for audio 
       * through */
      break;
    default:
      res = gst_pad_peer_query (goom->srcpad, query);
      break;
  }

  gst_object_unref (goom);

  return res;
}

Wim Taymans's avatar
Wim Taymans committed
490
/* make sure we are negotiated */
Wim Taymans's avatar
Wim Taymans committed
491
static GstFlowReturn
Wim Taymans's avatar
Wim Taymans committed
492
ensure_negotiated (GstGoom * goom)
Wim Taymans's avatar
Wim Taymans committed
493
{
Wim Taymans's avatar
Wim Taymans committed
494 495 496 497 498 499
  gboolean reconfigure;

  GST_OBJECT_LOCK (goom->srcpad);
  reconfigure = GST_PAD_NEEDS_RECONFIGURE (goom->srcpad);
  GST_OBJECT_FLAG_UNSET (goom->srcpad, GST_PAD_NEED_RECONFIGURE);
  GST_OBJECT_UNLOCK (goom->srcpad);
Wim Taymans's avatar
Wim Taymans committed
500

Wim Taymans's avatar
Wim Taymans committed
501 502
  /* we don't know an output format yet, pick one */
  if (reconfigure || !gst_pad_has_current_caps (goom->srcpad)) {
Wim Taymans's avatar
Wim Taymans committed
503 504 505 506 507
    if (!gst_goom_src_negotiate (goom))
      return GST_FLOW_NOT_NEGOTIATED;
  }
  return GST_FLOW_OK;
}
508

Wim Taymans's avatar
Wim Taymans committed
509

Wim Taymans's avatar
Wim Taymans committed
510 511 512 513 514 515
static GstFlowReturn
gst_goom_chain (GstPad * pad, GstBuffer * buffer)
{
  GstGoom *goom;
  GstFlowReturn ret;
  GstBuffer *outbuf = NULL;
516

Wim Taymans's avatar
Wim Taymans committed
517
  goom = GST_GOOM (gst_pad_get_parent (pad));
518 519 520 521
  if (goom->bps == 0) {
    ret = GST_FLOW_NOT_NEGOTIATED;
    goto beach;
  }
Wim Taymans's avatar
Wim Taymans committed
522

Wim Taymans's avatar
Wim Taymans committed
523 524 525 526 527
  /* Make sure have an output format */
  ret = ensure_negotiated (goom);
  if (ret != GST_FLOW_OK) {
    gst_buffer_unref (buffer);
    goto beach;
Wim Taymans's avatar
Wim Taymans committed
528 529 530 531 532
  }

  /* 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);
Wim Taymans's avatar
Wim Taymans committed
533 534
  }

Wim Taymans's avatar
Wim Taymans committed
535 536
  GST_DEBUG_OBJECT (goom,
      "Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
Wim Taymans's avatar
Wim Taymans committed
537
      gst_buffer_get_size (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));
Wim Taymans's avatar
Wim Taymans committed
538

539
  /* Collect samples until we have enough for an output frame */
Wim Taymans's avatar
Wim Taymans committed
540 541 542 543
  gst_adapter_push (goom->adapter, buffer);

  ret = GST_FLOW_OK;

544
  while (TRUE) {
Wim Taymans's avatar
Wim Taymans committed
545
    const guint16 *data;
546 547
    guchar *out_frame;
    gint i;
548
    guint avail, to_flush;
549
    guint64 dist, timestamp;
550 551 552 553 554 555 556 557 558 559 560

    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;
561

Wim Taymans's avatar
Wim Taymans committed
562 563
    GST_DEBUG_OBJECT (goom, "processing buffer");

564 565 566 567 568 569 570 571
    /* get timestamp of the current adapter byte */
    timestamp = gst_adapter_prev_timestamp (goom->adapter, &dist);
    if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
      /* convert bytes to time */
      dist /= goom->bps;
      timestamp += gst_util_uint64_scale_int (dist, GST_SECOND, goom->rate);
    }

Stefan Sauer's avatar
Stefan Sauer committed
572
    if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
Wim Taymans's avatar
Wim Taymans committed
573
      gint64 qostime;
Stefan Sauer's avatar
Stefan Sauer committed
574
      gboolean need_skip;
Wim Taymans's avatar
Wim Taymans committed
575 576

      qostime = gst_segment_to_running_time (&goom->segment, GST_FORMAT_TIME,
Stefan Sauer's avatar
Stefan Sauer committed
577
          timestamp) + goom->duration;
Wim Taymans's avatar
Wim Taymans committed
578 579 580 581 582 583 584 585 586 587 588 589 590 591

      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;
      }
    }

592
    /* get next GOOM_SAMPLES, we have at least this amount of samples */
Wim Taymans's avatar
Wim Taymans committed
593
    data =
Wim Taymans's avatar
Wim Taymans committed
594
        (const guint16 *) gst_adapter_map (goom->adapter,
Wim Taymans's avatar
Wim Taymans committed
595
        GOOM_SAMPLES * goom->bps);
Wim Taymans's avatar
Wim Taymans committed
596

597 598 599 600 601 602 603 604 605 606 607
    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++;
      }
    }
608

Wim Taymans's avatar
Wim Taymans committed
609 610 611
    /* 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) {
Wim Taymans's avatar
Wim Taymans committed
612 613
      GST_DEBUG_OBJECT (goom, "allocating output buffer");
      ret = gst_buffer_pool_acquire_buffer (goom->pool, &outbuf, NULL);
Wim Taymans's avatar
Wim Taymans committed
614
      if (ret != GST_FLOW_OK) {
Wim Taymans's avatar
Wim Taymans committed
615
        gst_adapter_unmap (goom->adapter, 0);
Wim Taymans's avatar
Wim Taymans committed
616 617 618
        goto beach;
      }
    }
Wim Taymans's avatar
Wim Taymans committed
619

620
    GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
Wim Taymans's avatar
Wim Taymans committed
621
    GST_BUFFER_DURATION (outbuf) = goom->duration;
Wim Taymans's avatar
Wim Taymans committed
622

623
    out_frame = (guchar *) goom_update (goom->plugin, goom->datain, 0, 0);
Wim Taymans's avatar
Wim Taymans committed
624 625 626
    gst_buffer_fill (outbuf, 0, out_frame, goom->outsize);

    gst_adapter_unmap (goom->adapter, 0);
Wim Taymans's avatar
Wim Taymans committed
627 628

    GST_DEBUG ("Pushing frame with time=%" GST_TIME_FORMAT ", duration=%"
629
        GST_TIME_FORMAT, GST_TIME_ARGS (timestamp),
Wim Taymans's avatar
Wim Taymans committed
630 631 632 633
        GST_TIME_ARGS (goom->duration));

    ret = gst_pad_push (goom->srcpad, outbuf);
    outbuf = NULL;
634

Wim Taymans's avatar
Wim Taymans committed
635
  skip:
636 637 638 639 640 641 642
    /* 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
643 644 645

    if (ret != GST_FLOW_OK)
      break;
646
  }
Wim Taymans's avatar
Wim Taymans committed
647 648 649 650 651 652 653 654

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

beach:
  gst_object_unref (goom);

  return ret;
655 656
}

657 658
static GstStateChangeReturn
gst_goom_change_state (GstElement * element, GstStateChange transition)
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
659
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
660
  GstGoom *goom = GST_GOOM (element);
661
  GstStateChangeReturn ret;
662

Wim Taymans's avatar
Wim Taymans committed
663
  switch (transition) {
664
    case GST_STATE_CHANGE_NULL_TO_READY:
665
      break;
666
    case GST_STATE_CHANGE_READY_TO_PAUSED:
Wim Taymans's avatar
Wim Taymans committed
667
      gst_goom_reset (goom);
668 669 670 671 672
      break;
    default:
      break;
  }

673
  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
Wim Taymans's avatar
Wim Taymans committed
674 675

  switch (transition) {
676
    case GST_STATE_CHANGE_PAUSED_TO_READY:
Wim Taymans's avatar
Wim Taymans committed
677 678
      if (goom->pool) {
        gst_buffer_pool_set_active (goom->pool, FALSE);
Stefan Sauer's avatar
Stefan Sauer committed
679
        gst_object_replace ((GstObject **) & goom->pool, NULL);
Wim Taymans's avatar
Wim Taymans committed
680
      }
Wim Taymans's avatar
Wim Taymans committed
681
      break;
682
    case GST_STATE_CHANGE_READY_TO_NULL:
Wim Taymans's avatar
Wim Taymans committed
683 684 685 686
      break;
    default:
      break;
  }
687

Wim Taymans's avatar
Wim Taymans committed
688
  return ret;
689 690
}

691
static gboolean
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
692
plugin_init (GstPlugin * plugin)
693
{
694 695
  GST_DEBUG_CATEGORY_INIT (goom_debug, "goom", 0, "goom visualisation element");

696 697 698 699
#if HAVE_ORC
  orc_init ();
#endif

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
700
  return gst_element_register (plugin, "goom", GST_RANK_NONE, GST_TYPE_GOOM);
701 702
}

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
703 704 705 706
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
    GST_VERSION_MINOR,
    "goom",
    "GOOM visualization filter",
707
    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)