gstgoom.c 18.2 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
 * |[
32
 * gst-launch -v audiotestsrc ! goom ! ffmpegcolorspace ! 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>
45
#include "goom.h"
46

47 48 49 50
#if HAVE_ORC
#include <orc/orc.h>
#endif

51
GST_DEBUG_CATEGORY (goom_debug);
52 53
#define GST_CAT_DEFAULT goom_debug

54 55 56 57 58
#define DEFAULT_WIDTH  320
#define DEFAULT_HEIGHT 240
#define DEFAULT_FPS_N  25
#define DEFAULT_FPS_D  1

59
/* signals and args */
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
60 61
enum
{
62 63 64 65
  /* FILL ME */
  LAST_SIGNAL
};

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
66 67
enum
{
68 69
  ARG_0
      /* FILL ME */
70 71
};

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
72 73 74 75 76
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN)
    );
77

78 79 80
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
81
    GST_STATIC_CAPS ("audio/x-raw-int, "
82 83 84 85
        "endianness = (int) BYTE_ORDER, "
        "signed = (boolean) TRUE, "
        "width = (int) 16, "
        "depth = (int) 16, "
Wim Taymans's avatar
Wim Taymans committed
86
        "rate = (int) [ 8000, 96000 ], " "channels = (int) { 1, 2 }")
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
87 88 89
    );


Wim Taymans's avatar
Wim Taymans committed
90
static void gst_goom_finalize (GObject * object);
91

92 93
static GstStateChangeReturn gst_goom_change_state (GstElement * element,
    GstStateChange transition);
94

Wim Taymans's avatar
Wim Taymans committed
95
static GstFlowReturn gst_goom_chain (GstPad * pad, GstBuffer * buffer);
Wim Taymans's avatar
Wim Taymans committed
96 97
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
98

99 100
static gboolean gst_goom_src_query (GstPad * pad, GstQuery * query);

Wim Taymans's avatar
Wim Taymans committed
101 102
#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
103

104
static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
105
gst_goom_class_init (GstGoomClass * klass)
106 107 108 109
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
110 111
  gobject_class = (GObjectClass *) klass;
  gstelement_class = (GstElementClass *) klass;
112

Wim Taymans's avatar
Wim Taymans committed
113
  gobject_class->finalize = gst_goom_finalize;
114

Wim Taymans's avatar
Wim Taymans committed
115 116 117 118 119 120 121 122 123
  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));

124
  gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_goom_change_state);
125 126 127
}

static void
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
128
gst_goom_init (GstGoom * goom)
129 130
{
  /* create the sink and src pads */
131
  goom->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
132 133 134 135
  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));
Wim Taymans's avatar
Wim Taymans committed
136 137 138
  gst_element_add_pad (GST_ELEMENT (goom), goom->sinkpad);

  goom->srcpad = gst_pad_new_from_static_template (&src_template, "src");
139 140
  gst_pad_set_event_function (goom->srcpad,
      GST_DEBUG_FUNCPTR (gst_goom_src_event));
141 142
  gst_pad_set_query_function (goom->srcpad,
      GST_DEBUG_FUNCPTR (gst_goom_src_query));
Wim Taymans's avatar
Wim Taymans committed
143
  gst_element_add_pad (GST_ELEMENT (goom), goom->srcpad);
Wim Taymans's avatar
Wim Taymans committed
144

145 146
  goom->adapter = gst_adapter_new ();

147 148 149 150
  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
151
  goom->channels = 0;
Wim Taymans's avatar
Wim Taymans committed
152 153
  goom->rate = 0;
  goom->duration = 0;
154

155
  goom->plugin = goom_init (goom->width, goom->height);
Wim Taymans's avatar
Wim Taymans committed
156 157 158
}

static void
Wim Taymans's avatar
Wim Taymans committed
159
gst_goom_finalize (GObject * object)
Wim Taymans's avatar
Wim Taymans committed
160
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
161
  GstGoom *goom = GST_GOOM (object);
162

163
  goom_close (goom->plugin);
164
  goom->plugin = NULL;
165

Wim Taymans's avatar
Wim Taymans committed
166
  g_object_unref (goom->adapter);
Wim Taymans's avatar
Wim Taymans committed
167 168
  if (goom->pool)
    gst_object_unref (goom->pool);
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
169

Wim Taymans's avatar
Wim Taymans committed
170 171 172 173 174 175 176 177 178 179 180 181 182
  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);
183 184
}

Wim Taymans's avatar
Wim Taymans committed
185
static gboolean
Wim Taymans's avatar
Wim Taymans committed
186
gst_goom_sink_setcaps (GstGoom * goom, GstCaps * caps)
187
{
David Schleef's avatar
David Schleef committed
188
  GstStructure *structure;
Wim Taymans's avatar
Wim Taymans committed
189
  gboolean res;
David Schleef's avatar
David Schleef committed
190 191

  structure = gst_caps_get_structure (caps, 0);
192

Wim Taymans's avatar
Wim Taymans committed
193 194
  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
195

Wim Taymans's avatar
Wim Taymans committed
196 197
  goom->bps = goom->channels * sizeof (gint16);

Wim Taymans's avatar
Wim Taymans committed
198
  return TRUE;
Wim Taymans's avatar
Wim Taymans committed
199 200
}

Wim Taymans's avatar
Wim Taymans committed
201
static gboolean
Wim Taymans's avatar
Wim Taymans committed
202
gst_goom_src_setcaps (GstGoom * goom, GstCaps * caps)
Wim Taymans's avatar
Wim Taymans committed
203
{
David Schleef's avatar
David Schleef committed
204
  GstStructure *structure;
Wim Taymans's avatar
Wim Taymans committed
205
  gboolean res;
Wim Taymans's avatar
Wim Taymans committed
206

David Schleef's avatar
David Schleef committed
207
  structure = gst_caps_get_structure (caps, 0);
208
  if (!gst_structure_get_int (structure, "width", &goom->width) ||
Jan Schmidt's avatar
Jan Schmidt committed
209 210 211
      !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
212
    goto error;
213

214
  goom_set_resolution (goom->plugin, goom->width, goom->height);
Wim Taymans's avatar
Wim Taymans committed
215

Wim Taymans's avatar
Wim Taymans committed
216 217 218 219 220
  /* 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);
221
  goom->bpf = goom->spf * goom->bps;
Wim Taymans's avatar
Wim Taymans committed
222 223 224 225

  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
226 227 228 229 230 231 232 233 234 235
  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;
  }
236 237
}

Wim Taymans's avatar
Wim Taymans committed
238
static gboolean
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
239
gst_goom_src_negotiate (GstGoom * goom)
240
{
Wim Taymans's avatar
Wim Taymans committed
241
  gboolean res;
242
  GstCaps *othercaps, *target;
243
  GstStructure *structure;
Wim Taymans's avatar
Wim Taymans committed
244 245 246 247
  GstCaps *templ;
  GstQuery *query;
  GstBufferPool *pool = NULL;
  guint size, min, max, prefix, alignment;
248

Wim Taymans's avatar
Wim Taymans committed
249
  templ = gst_pad_get_pad_template_caps (goom->srcpad);
250

251 252
  GST_DEBUG_OBJECT (goom, "performing negotiation");

Wim Taymans's avatar
Wim Taymans committed
253
  /* see what the peer can do */
Wim Taymans's avatar
Wim Taymans committed
254
  othercaps = gst_pad_peer_get_caps (goom->srcpad, NULL);
Wim Taymans's avatar
Wim Taymans committed
255
  if (othercaps) {
256
    target = gst_caps_intersect (othercaps, templ);
Wim Taymans's avatar
Wim Taymans committed
257
    gst_caps_unref (othercaps);
Wim Taymans's avatar
Wim Taymans committed
258
    gst_caps_unref (templ);
259

260
    if (gst_caps_is_empty (target))
Wim Taymans's avatar
Wim Taymans committed
261 262
      goto no_format;

263
    gst_caps_truncate (target);
Wim Taymans's avatar
Wim Taymans committed
264
  } else {
Wim Taymans's avatar
Wim Taymans committed
265
    target = templ;
266 267
  }

Wim Taymans's avatar
Wim Taymans committed
268
  structure = gst_caps_get_structure (target, 0);
269 270 271 272
  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
273

Wim Taymans's avatar
Wim Taymans committed
274 275 276 277 278 279 280 281 282 283 284 285 286 287
  res = gst_goom_src_setcaps (goom, target);

  /* 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;
288
    alignment = 0;
Wim Taymans's avatar
Wim Taymans committed
289 290 291 292 293 294 295 296 297
  }

  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
298
    gst_buffer_pool_config_set (config, target, size, min, max, prefix,
Wim Taymans's avatar
Wim Taymans committed
299 300 301 302 303 304 305 306 307 308 309
        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
310 311 312 313 314 315
  gst_caps_unref (target);

  return TRUE;

no_format:
  {
316
    gst_caps_unref (target);
Wim Taymans's avatar
Wim Taymans committed
317 318
    return FALSE;
  }
319 320
}

Wim Taymans's avatar
Wim Taymans committed
321
static gboolean
Wim Taymans's avatar
Wim Taymans committed
322
gst_goom_src_event (GstPad * pad, GstEvent * event)
323
{
Wim Taymans's avatar
Wim Taymans committed
324
  gboolean res;
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
325
  GstGoom *goom;
326

Wim Taymans's avatar
Wim Taymans committed
327
  goom = GST_GOOM (gst_pad_get_parent (pad));
Wim Taymans's avatar
Wim Taymans committed
328

Wim Taymans's avatar
Wim Taymans committed
329
  switch (GST_EVENT_TYPE (event)) {
Wim Taymans's avatar
Wim Taymans committed
330 331 332 333 334 335
    case GST_EVENT_QOS:
    {
      gdouble proportion;
      GstClockTimeDiff diff;
      GstClockTime timestamp;

Wim Taymans's avatar
Wim Taymans committed
336
      gst_event_parse_qos (event, NULL, &proportion, &diff, &timestamp);
Wim Taymans's avatar
Wim Taymans committed
337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369

      /* 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
370 371 372 373 374 375 376 377
    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
378 379 380 381 382 383 384
    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
385
    case GST_EVENT_SEGMENT:
Wim Taymans's avatar
Wim Taymans committed
386
    {
Wim Taymans's avatar
Wim Taymans committed
387 388 389
      /* 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
390
      gst_event_copy_segment (event, &goom->segment);
Wim Taymans's avatar
Wim Taymans committed
391 392 393

      res = gst_pad_push_event (goom->srcpad, event);
      break;
Wim Taymans's avatar
Wim Taymans committed
394
    }
Wim Taymans's avatar
Wim Taymans committed
395
    default:
Wim Taymans's avatar
Wim Taymans committed
396
      res = gst_pad_push_event (goom->srcpad, event);
Wim Taymans's avatar
Wim Taymans committed
397
      break;
Wim Taymans's avatar
Wim Taymans committed
398
  }
Wim Taymans's avatar
Wim Taymans committed
399 400
  gst_object_unref (goom);

Wim Taymans's avatar
Wim Taymans committed
401 402
  return res;
}
Wim Taymans's avatar
Wim Taymans committed
403

404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438
static gboolean
gst_goom_src_query (GstPad * pad, GstQuery * query)
{
  gboolean res;
  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;

      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 */
439
        min_latency += our_latency;
440
        if (max_latency != -1)
441
          max_latency += our_latency;
442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460

        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;
}

Wim Taymans's avatar
Wim Taymans committed
461
/* make sure we are negotiated */
Wim Taymans's avatar
Wim Taymans committed
462
static GstFlowReturn
Wim Taymans's avatar
Wim Taymans committed
463
ensure_negotiated (GstGoom * goom)
Wim Taymans's avatar
Wim Taymans committed
464
{
Wim Taymans's avatar
Wim Taymans committed
465 466 467 468 469 470
  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
471

Wim Taymans's avatar
Wim Taymans committed
472 473
  /* 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
474 475 476 477 478
    if (!gst_goom_src_negotiate (goom))
      return GST_FLOW_NOT_NEGOTIATED;
  }
  return GST_FLOW_OK;
}
479

Wim Taymans's avatar
Wim Taymans committed
480

Wim Taymans's avatar
Wim Taymans committed
481 482 483 484 485 486
static GstFlowReturn
gst_goom_chain (GstPad * pad, GstBuffer * buffer)
{
  GstGoom *goom;
  GstFlowReturn ret;
  GstBuffer *outbuf = NULL;
487

Wim Taymans's avatar
Wim Taymans committed
488
  goom = GST_GOOM (gst_pad_get_parent (pad));
489 490 491 492
  if (goom->bps == 0) {
    ret = GST_FLOW_NOT_NEGOTIATED;
    goto beach;
  }
Wim Taymans's avatar
Wim Taymans committed
493

Wim Taymans's avatar
Wim Taymans committed
494 495 496 497 498
  /* 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
499 500 501 502 503
  }

  /* 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
504 505
  }

Wim Taymans's avatar
Wim Taymans committed
506 507
  GST_DEBUG_OBJECT (goom,
      "Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
Wim Taymans's avatar
Wim Taymans committed
508
      gst_buffer_get_size (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));
Wim Taymans's avatar
Wim Taymans committed
509

510
  /* Collect samples until we have enough for an output frame */
Wim Taymans's avatar
Wim Taymans committed
511 512 513 514
  gst_adapter_push (goom->adapter, buffer);

  ret = GST_FLOW_OK;

515
  while (TRUE) {
Wim Taymans's avatar
Wim Taymans committed
516
    const guint16 *data;
Wim Taymans's avatar
Wim Taymans committed
517
    gboolean need_skip;
518 519
    guchar *out_frame;
    gint i;
520
    guint avail, to_flush;
521
    guint64 dist, timestamp;
522 523 524 525 526 527 528 529 530 531 532

    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;
533

Wim Taymans's avatar
Wim Taymans committed
534 535
    GST_DEBUG_OBJECT (goom, "processing buffer");

536 537 538 539 540 541 542 543 544
    /* 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);
    }

    if (timestamp != -1) {
Wim Taymans's avatar
Wim Taymans committed
545 546 547
      gint64 qostime;

      qostime = gst_segment_to_running_time (&goom->segment, GST_FORMAT_TIME,
548
          timestamp);
549
      qostime += goom->duration;
Wim Taymans's avatar
Wim Taymans committed
550 551 552 553 554 555 556 557 558 559 560 561 562 563

      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;
      }
    }

564
    /* get next GOOM_SAMPLES, we have at least this amount of samples */
Wim Taymans's avatar
Wim Taymans committed
565
    data =
Wim Taymans's avatar
Wim Taymans committed
566
        (const guint16 *) gst_adapter_map (goom->adapter,
Wim Taymans's avatar
Wim Taymans committed
567
        GOOM_SAMPLES * goom->bps);
Wim Taymans's avatar
Wim Taymans committed
568

569 570 571 572 573 574 575 576 577 578 579
    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++;
      }
    }
580

Wim Taymans's avatar
Wim Taymans committed
581 582 583
    /* 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
584 585
      GST_DEBUG_OBJECT (goom, "allocating output buffer");
      ret = gst_buffer_pool_acquire_buffer (goom->pool, &outbuf, NULL);
Wim Taymans's avatar
Wim Taymans committed
586
      if (ret != GST_FLOW_OK) {
Wim Taymans's avatar
Wim Taymans committed
587
        gst_adapter_unmap (goom->adapter, 0);
Wim Taymans's avatar
Wim Taymans committed
588 589 590
        goto beach;
      }
    }
Wim Taymans's avatar
Wim Taymans committed
591

592
    GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
Wim Taymans's avatar
Wim Taymans committed
593
    GST_BUFFER_DURATION (outbuf) = goom->duration;
Wim Taymans's avatar
Wim Taymans committed
594

595
    out_frame = (guchar *) goom_update (goom->plugin, goom->datain, 0, 0);
Wim Taymans's avatar
Wim Taymans committed
596 597 598
    gst_buffer_fill (outbuf, 0, out_frame, goom->outsize);

    gst_adapter_unmap (goom->adapter, 0);
Wim Taymans's avatar
Wim Taymans committed
599 600

    GST_DEBUG ("Pushing frame with time=%" GST_TIME_FORMAT ", duration=%"
601
        GST_TIME_FORMAT, GST_TIME_ARGS (timestamp),
Wim Taymans's avatar
Wim Taymans committed
602 603 604 605
        GST_TIME_ARGS (goom->duration));

    ret = gst_pad_push (goom->srcpad, outbuf);
    outbuf = NULL;
606

Wim Taymans's avatar
Wim Taymans committed
607
  skip:
608 609 610 611 612 613 614
    /* 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
615 616 617

    if (ret != GST_FLOW_OK)
      break;
618
  }
Wim Taymans's avatar
Wim Taymans committed
619 620 621 622 623 624 625 626

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

beach:
  gst_object_unref (goom);

  return ret;
627 628
}

629 630
static GstStateChangeReturn
gst_goom_change_state (GstElement * element, GstStateChange transition)
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
631
{
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
632
  GstGoom *goom = GST_GOOM (element);
633
  GstStateChangeReturn ret;
634

Wim Taymans's avatar
Wim Taymans committed
635
  switch (transition) {
636
    case GST_STATE_CHANGE_NULL_TO_READY:
637
      break;
638
    case GST_STATE_CHANGE_READY_TO_PAUSED:
Wim Taymans's avatar
Wim Taymans committed
639
      gst_goom_reset (goom);
640 641 642 643 644
      break;
    default:
      break;
  }

645
  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
Wim Taymans's avatar
Wim Taymans committed
646 647

  switch (transition) {
648
    case GST_STATE_CHANGE_PAUSED_TO_READY:
Wim Taymans's avatar
Wim Taymans committed
649 650 651 652 653
      if (goom->pool) {
        gst_buffer_pool_set_active (goom->pool, FALSE);
        gst_object_unref (goom->pool);
        goom->pool = NULL;
      }
Wim Taymans's avatar
Wim Taymans committed
654
      break;
655
    case GST_STATE_CHANGE_READY_TO_NULL:
Wim Taymans's avatar
Wim Taymans committed
656 657 658 659
      break;
    default:
      break;
  }
660

Wim Taymans's avatar
Wim Taymans committed
661
  return ret;
662 663
}

664
static gboolean
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
665
plugin_init (GstPlugin * plugin)
666
{
667 668
  GST_DEBUG_CATEGORY_INIT (goom_debug, "goom", 0, "goom visualisation element");

669 670 671 672
#if HAVE_ORC
  orc_init ();
#endif

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
673
  return gst_element_register (plugin, "goom", GST_RANK_NONE, GST_TYPE_GOOM);
674 675
}

Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
676 677 678 679
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
    GST_VERSION_MINOR,
    "goom",
    "GOOM visualization filter",
680
    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)