gstalpha.c 70.7 KB
Newer Older
1 2
/* GStreamer
 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 4 5
 * Copyright (C) <2007> Wim Taymans <wim.taymans@collabora.co.uk>
 * Copyright (C) <2007> Edward Hervey <edward.hervey@collabora.co.uk>
 * Copyright (C) <2007> Jan Schmidt <thaytan@noraisin.net>
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
 *
 * 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.
 */

Sebastian Dröge's avatar
Sebastian Dröge committed
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
/**
 * SECTION:element-alpha
 * 
 * The alpha element adds an alpha channel to a video stream. The values
 * of the alpha channel can be either be set to a constant or can be
 * dynamically calculated via chroma keying, e.g. blue can be set as
 * the transparent color.
 *
 * Sample pipeline:
 * |[
 * gst-launch videotestsrc pattern=smpte75 ! alpha method=green ! \
 *   videomixer name=mixer ! ffmpegcolorspace ! autovideosink     \
 *   videotestsrc pattern=snow ! mixer.
 * ]| This pipeline adds a alpha channel to the SMPTE color bars
 * with green as the transparent color and mixes the output with
 * a snow video stream.
 */


42 43 44
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
45 46

#include "gstalpha.h"
47

48
#include <stdlib.h>
49
#include <string.h>
50
#include <math.h>
51

52 53 54 55
#ifndef M_PI
#define M_PI  3.14159265358979323846
#endif

56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92
/* Generated by -bad/ext/cog/generate_tables */
static const int cog_ycbcr_to_rgb_matrix_8bit_hdtv[] = {
  298, 0, 459, -63514,
  298, -55, -136, 19681,
  298, 541, 0, -73988,
};

static const int cog_ycbcr_to_rgb_matrix_8bit_sdtv[] = {
  298, 0, 409, -57068,
  298, -100, -208, 34707,
  298, 516, 0, -70870,
};

static const gint cog_rgb_to_ycbcr_matrix_8bit_hdtv[] = {
  47, 157, 16, 4096,
  -26, -87, 112, 32768,
  112, -102, -10, 32768,
};

static const gint cog_rgb_to_ycbcr_matrix_8bit_sdtv[] = {
  66, 129, 25, 4096,
  -38, -74, 112, 32768,
  112, -94, -18, 32768,
};

static const gint cog_ycbcr_sdtv_to_ycbcr_hdtv_matrix_8bit[] = {
  256, -30, -53, 10600,
  0, 261, 29, -4367,
  0, 19, 262, -3289,
};

static const gint cog_ycbcr_hdtv_to_ycbcr_sdtv_matrix_8bit[] = {
  256, 25, 49, -9536,
  0, 253, -28, 3958,
  0, -19, 252, 2918,
};

93 94 95 96 97 98 99
/* Alpha signals and args */
enum
{
  /* FILL ME */
  LAST_SIGNAL
};

100
#define DEFAULT_METHOD ALPHA_METHOD_SET
101 102 103 104 105 106
#define DEFAULT_ALPHA 1.0
#define DEFAULT_TARGET_R 0
#define DEFAULT_TARGET_G 255
#define DEFAULT_TARGET_B 0
#define DEFAULT_ANGLE 20.0
#define DEFAULT_NOISE_LEVEL 2.0
107 108
#define DEFAULT_BLACK_SENSITIVITY 100
#define DEFAULT_WHITE_SENSITIVITY 100
109

110 111
enum
{
112 113 114 115 116 117 118 119 120 121 122
  PROP_0,
  PROP_METHOD,
  PROP_ALPHA,
  PROP_TARGET_R,
  PROP_TARGET_G,
  PROP_TARGET_B,
  PROP_ANGLE,
  PROP_NOISE_LEVEL,
  PROP_BLACK_SENSITIVITY,
  PROP_WHITE_SENSITIVITY,
  PROP_LAST
123 124 125
};

static GstStaticPadTemplate gst_alpha_src_template =
126
    GST_STATIC_PAD_TEMPLATE ("src",
127 128
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
129 130 131
    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV") ";"
        GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";"
        GST_VIDEO_CAPS_ABGR ";" GST_VIDEO_CAPS_RGBA)
132 133 134
    );

static GstStaticPadTemplate gst_alpha_sink_template =
135
    GST_STATIC_PAD_TEMPLATE ("sink",
136 137
    GST_PAD_SINK,
    GST_PAD_ALWAYS,
138
    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV")
139
        ";" GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";" GST_VIDEO_CAPS_ABGR
140 141
        ";" GST_VIDEO_CAPS_RGBA
        ";" GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_BGRx ";" GST_VIDEO_CAPS_xBGR
142 143 144
        ";" GST_VIDEO_CAPS_RGBx ";" GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR
        ";" ";" GST_VIDEO_CAPS_YUV ("I420") ";" GST_VIDEO_CAPS_YUV ("YV12")
    )
145 146
    );

147 148 149 150 151 152 153 154 155
static gboolean gst_alpha_start (GstBaseTransform * trans);
static gboolean gst_alpha_get_unit_size (GstBaseTransform * btrans,
    GstCaps * caps, guint * size);
static GstCaps *gst_alpha_transform_caps (GstBaseTransform * btrans,
    GstPadDirection direction, GstCaps * caps);
static gboolean gst_alpha_set_caps (GstBaseTransform * btrans,
    GstCaps * incaps, GstCaps * outcaps);
static GstFlowReturn gst_alpha_transform (GstBaseTransform * btrans,
    GstBuffer * in, GstBuffer * out);
156

157
static void gst_alpha_init_params (GstAlpha * alpha);
158
static gboolean gst_alpha_set_process_function (GstAlpha * alpha);
159 160 161 162 163 164

static void gst_alpha_set_property (GObject * object, guint prop_id,
    const GValue * value, GParamSpec * pspec);
static void gst_alpha_get_property (GObject * object, guint prop_id,
    GValue * value, GParamSpec * pspec);

165
GST_BOILERPLATE (GstAlpha, gst_alpha, GstVideoFilter, GST_TYPE_VIDEO_FILTER);
166 167 168 169 170 171

#define GST_TYPE_ALPHA_METHOD (gst_alpha_method_get_type())
static GType
gst_alpha_method_get_type (void)
{
  static GType alpha_method_type = 0;
172
  static const GEnumValue alpha_method[] = {
Thomas Vander Stichele's avatar
Thomas Vander Stichele committed
173 174 175 176
    {ALPHA_METHOD_SET, "Set/adjust alpha channel", "set"},
    {ALPHA_METHOD_GREEN, "Chroma Key green", "green"},
    {ALPHA_METHOD_BLUE, "Chroma Key blue", "blue"},
    {ALPHA_METHOD_CUSTOM, "Chroma Key on target_r/g/b", "custom"},
177 178 179 180 181 182 183 184 185 186 187 188 189 190
    {0, NULL, NULL},
  };

  if (!alpha_method_type) {
    alpha_method_type = g_enum_register_static ("GstAlphaMethod", alpha_method);
  }
  return alpha_method_type;
}

static void
gst_alpha_base_init (gpointer g_class)
{
  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);

191 192 193 194 195 196
  gst_element_class_set_details_simple (element_class, "Alpha filter",
      "Filter/Effect/Video",
      "Adds an alpha channel to video - uniform or via chroma-keying",
      "Wim Taymans <wim@fluendo.com>\n"
      "Edward Hervey <edward.hervey@collabora.co.uk>\n"
      "Jan Schmidt <thaytan@noraisin.net>");
197 198 199 200 201

  gst_element_class_add_pad_template (element_class,
      gst_static_pad_template_get (&gst_alpha_sink_template));
  gst_element_class_add_pad_template (element_class,
      gst_static_pad_template_get (&gst_alpha_src_template));
202 203 204

  GST_DEBUG_CATEGORY_INIT (gst_alpha_debug, "alpha", 0,
      "alpha - Element for adding alpha channel to streams");
205
}
206

207 208 209
static void
gst_alpha_class_init (GstAlphaClass * klass)
{
210 211
  GObjectClass *gobject_class = (GObjectClass *) klass;
  GstBaseTransformClass *btrans_class = (GstBaseTransformClass *) klass;
212

213 214 215
  gobject_class->set_property = gst_alpha_set_property;
  gobject_class->get_property = gst_alpha_get_property;

216
  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_METHOD,
217 218
      g_param_spec_enum ("method", "Method",
          "How the alpha channels should be created", GST_TYPE_ALPHA_METHOD,
219
          DEFAULT_METHOD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
220
  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ALPHA,
221
      g_param_spec_double ("alpha", "Alpha", "The value for the alpha channel",
222
          0.0, 1.0, DEFAULT_ALPHA,
223
          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
224
  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TARGET_R,
225
      g_param_spec_uint ("target-r", "Target Red", "The Red target", 0, 255,
226
          DEFAULT_TARGET_R,
227
          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
228
  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TARGET_G,
229
      g_param_spec_uint ("target-g", "Target Green", "The Green target", 0, 255,
230
          DEFAULT_TARGET_G,
231
          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
232
  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TARGET_B,
233
      g_param_spec_uint ("target-b", "Target Blue", "The Blue target", 0, 255,
234
          DEFAULT_TARGET_B,
235
          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
236
  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ANGLE,
237
      g_param_spec_float ("angle", "Angle", "Size of the colorcube to change",
238
          0.0, 90.0, DEFAULT_ANGLE,
239
          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
240
  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_NOISE_LEVEL,
241
      g_param_spec_float ("noise-level", "Noise Level", "Size of noise radius",
242
          0.0, 64.0, DEFAULT_NOISE_LEVEL,
243
          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
244 245 246 247
  g_object_class_install_property (G_OBJECT_CLASS (klass),
      PROP_BLACK_SENSITIVITY, g_param_spec_uint ("black-sensitivity",
          "Black Sensitivity", "Sensitivity to dark colors", 0, 128,
          DEFAULT_BLACK_SENSITIVITY,
248
          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
249 250 251 252
  g_object_class_install_property (G_OBJECT_CLASS (klass),
      PROP_WHITE_SENSITIVITY, g_param_spec_uint ("white-sensitivity",
          "Sensitivity", "Sensitivity to bright colors", 0, 128,
          DEFAULT_WHITE_SENSITIVITY,
253
          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
254

255

256 257 258 259 260
  btrans_class->start = GST_DEBUG_FUNCPTR (gst_alpha_start);
  btrans_class->transform = GST_DEBUG_FUNCPTR (gst_alpha_transform);
  btrans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_alpha_get_unit_size);
  btrans_class->transform_caps = GST_DEBUG_FUNCPTR (gst_alpha_transform_caps);
  btrans_class->set_caps = GST_DEBUG_FUNCPTR (gst_alpha_set_caps);
261 262 263
}

static void
264
gst_alpha_init (GstAlpha * alpha, GstAlphaClass * klass)
265 266 267
{
  alpha->alpha = DEFAULT_ALPHA;
  alpha->method = DEFAULT_METHOD;
268 269 270 271 272
  alpha->target_r = DEFAULT_TARGET_R;
  alpha->target_g = DEFAULT_TARGET_G;
  alpha->target_b = DEFAULT_TARGET_B;
  alpha->angle = DEFAULT_ANGLE;
  alpha->noise_level = DEFAULT_NOISE_LEVEL;
273 274
  alpha->black_sensitivity = DEFAULT_BLACK_SENSITIVITY;
  alpha->white_sensitivity = DEFAULT_WHITE_SENSITIVITY;
275 276 277 278 279 280 281
}

/* do we need this function? */
static void
gst_alpha_set_property (GObject * object, guint prop_id,
    const GValue * value, GParamSpec * pspec)
{
282
  GstAlpha *alpha = GST_ALPHA (object);
283

284
  GST_OBJECT_LOCK (alpha);
285
  switch (prop_id) {
286
    case PROP_METHOD:
287
      alpha->method = g_value_get_enum (value);
288 289 290 291 292 293 294 295 296 297 298 299 300 301
      switch (alpha->method) {
        case ALPHA_METHOD_GREEN:
          alpha->target_r = 0;
          alpha->target_g = 255;
          alpha->target_b = 0;
          break;
        case ALPHA_METHOD_BLUE:
          alpha->target_r = 0;
          alpha->target_g = 0;
          alpha->target_b = 255;
          break;
        default:
          break;
      }
302
      gst_alpha_set_process_function (alpha);
303
      gst_alpha_init_params (alpha);
304
      break;
305
    case PROP_ALPHA:
306 307
      alpha->alpha = g_value_get_double (value);
      break;
308
    case PROP_TARGET_R:
309 310 311
      alpha->target_r = g_value_get_uint (value);
      gst_alpha_init_params (alpha);
      break;
312
    case PROP_TARGET_G:
313 314 315
      alpha->target_g = g_value_get_uint (value);
      gst_alpha_init_params (alpha);
      break;
316
    case PROP_TARGET_B:
317 318
      alpha->target_b = g_value_get_uint (value);
      gst_alpha_init_params (alpha);
319
      break;
320
    case PROP_ANGLE:
321 322 323
      alpha->angle = g_value_get_float (value);
      gst_alpha_init_params (alpha);
      break;
324
    case PROP_NOISE_LEVEL:
325 326
      alpha->noise_level = g_value_get_float (value);
      gst_alpha_init_params (alpha);
327
      break;
328 329 330 331 332 333
    case PROP_BLACK_SENSITIVITY:
      alpha->black_sensitivity = g_value_get_uint (value);
      break;
    case PROP_WHITE_SENSITIVITY:
      alpha->white_sensitivity = g_value_get_uint (value);
      break;
334 335 336 337
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
338
  GST_OBJECT_UNLOCK (alpha);
339
}
340

341 342 343 344
static void
gst_alpha_get_property (GObject * object, guint prop_id, GValue * value,
    GParamSpec * pspec)
{
345
  GstAlpha *alpha = GST_ALPHA (object);
346 347

  switch (prop_id) {
348
    case PROP_METHOD:
349 350
      g_value_set_enum (value, alpha->method);
      break;
351
    case PROP_ALPHA:
352 353
      g_value_set_double (value, alpha->alpha);
      break;
354
    case PROP_TARGET_R:
355 356
      g_value_set_uint (value, alpha->target_r);
      break;
357
    case PROP_TARGET_G:
358 359
      g_value_set_uint (value, alpha->target_g);
      break;
360
    case PROP_TARGET_B:
361
      g_value_set_uint (value, alpha->target_b);
362
      break;
363
    case PROP_ANGLE:
364 365
      g_value_set_float (value, alpha->angle);
      break;
366
    case PROP_NOISE_LEVEL:
367
      g_value_set_float (value, alpha->noise_level);
368
      break;
369 370 371 372 373 374
    case PROP_BLACK_SENSITIVITY:
      g_value_set_uint (value, alpha->black_sensitivity);
      break;
    case PROP_WHITE_SENSITIVITY:
      g_value_set_uint (value, alpha->white_sensitivity);
      break;
375 376 377 378 379 380
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
}

381
static gboolean
382 383
gst_alpha_get_unit_size (GstBaseTransform * btrans,
    GstCaps * caps, guint * size)
384
{
385 386 387 388 389 390 391 392
  GstVideoFormat format;
  gint width, height;

  if (!gst_video_format_parse_caps (caps, &format, &width, &height))
    return FALSE;

  *size = gst_video_format_get_size (format, width, height);

393
  GST_DEBUG_OBJECT (btrans, "unit size = %d for format %d w %d height %d",
394 395 396 397 398 399 400 401 402 403
      *size, format, width, height);

  return TRUE;
}

static GstCaps *
gst_alpha_transform_caps (GstBaseTransform * btrans,
    GstPadDirection direction, GstCaps * caps)
{
  GstCaps *ret;
404
  GstStructure *structure;
405 406
  gint i;

407
  ret = gst_caps_new_empty ();
408

409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426
  for (i = 0; i < gst_caps_get_size (caps); i++) {
    structure = gst_structure_copy (gst_caps_get_structure (caps, i));

    gst_structure_remove_field (structure, "format");
    gst_structure_remove_field (structure, "endianness");
    gst_structure_remove_field (structure, "depth");
    gst_structure_remove_field (structure, "bpp");
    gst_structure_remove_field (structure, "red_mask");
    gst_structure_remove_field (structure, "green_mask");
    gst_structure_remove_field (structure, "blue_mask");
    gst_structure_remove_field (structure, "alpha_mask");
    gst_structure_remove_field (structure, "color-matrix");
    gst_structure_remove_field (structure, "chroma-site");

    gst_structure_set_name (structure, "video/x-raw-yuv");
    gst_caps_append_structure (ret, gst_structure_copy (structure));
    gst_structure_set_name (structure, "video/x-raw-rgb");
    gst_caps_append_structure (ret, structure);
427 428
  }

429 430 431 432 433 434 435 436 437 438
  gst_caps_do_simplify (ret);

  return ret;
}

static gboolean
gst_alpha_set_caps (GstBaseTransform * btrans,
    GstCaps * incaps, GstCaps * outcaps)
{
  GstAlpha *alpha = GST_ALPHA (btrans);
439 440 441
  const gchar *matrix;

  GST_OBJECT_LOCK (alpha);
442

443 444
  if (!gst_video_format_parse_caps (incaps, &alpha->in_format,
          &alpha->width, &alpha->height) ||
445
      !gst_video_format_parse_caps (outcaps, &alpha->out_format,
446 447
          &alpha->width, &alpha->height)) {
    GST_OBJECT_UNLOCK (alpha);
448
    return FALSE;
449 450 451 452 453 454 455 456 457 458 459 460 461 462 463
  }

  if (!gst_alpha_set_process_function (alpha)) {
    GST_OBJECT_UNLOCK (alpha);
    return FALSE;
  }

  matrix = gst_video_parse_caps_color_matrix (incaps);
  alpha->in_sdtv = matrix ? g_str_equal (matrix, "sdtv") : TRUE;

  matrix = gst_video_parse_caps_color_matrix (outcaps);
  alpha->out_sdtv = matrix ? g_str_equal (matrix, "sdtv") : TRUE;

  gst_alpha_init_params (alpha);
  GST_OBJECT_UNLOCK (alpha);
464

465
  return TRUE;
466 467
}

468 469 470 471 472 473
/* based on http://www.cs.utah.edu/~michael/chroma/
 */
static inline gint
chroma_keying_yuv (gint a, gint * y, guint ny, gint * u,
    gint * v, gint cr, gint cb, gint smin, gint smax, guint8 accept_angle_tg,
    guint8 accept_angle_ctg, guint8 one_over_kc, guint8 kfgy_scale, gint8 kg,
474
    guint noise_level2)
475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541
{
  gint tmp, tmp1;
  gint x1, y1;
  gint x, z;
  gint b_alpha;

  for (tmp = 0; tmp < ny; tmp++) {
    /* too dark or too bright, keep alpha */
    if (y[tmp] < smin || y[tmp] > smax)
      return a;
  }

  /* Convert foreground to XZ coords where X direction is defined by
     the key color */
  tmp = ((*u) * cb + (*v) * cr) >> 7;
  x = CLAMP (tmp, -128, 127);
  tmp = ((*v) * cb - (*u) * cr) >> 7;
  z = CLAMP (tmp, -128, 127);

  /* WARNING: accept angle should never be set greater than "somewhat less
     than 90 degrees" to avoid dealing with negative/infinite tg. In reality,
     80 degrees should be enough if foreground is reasonable. If this seems
     to be a problem, go to alternative ways of checking point position
     (scalar product or line equations). This angle should not be too small
     either to avoid infinite ctg (used to suppress foreground without use of
     division) */

  tmp = (x * accept_angle_tg) >> 4;
  tmp = MIN (tmp, 127);

  if (abs (z) > tmp) {
    /* keep foreground Kfg = 0 */
    return a;
  }
  /* Compute Kfg (implicitly) and Kbg, suppress foreground in XZ coord
     according to Kfg */
  tmp = (z * accept_angle_ctg) >> 4;
  tmp = CLAMP (tmp, -128, 127);
  x1 = abs (tmp);
  y1 = z;

  tmp1 = x - x1;
  tmp1 = MAX (tmp1, 0);
  b_alpha = (tmp1 * one_over_kc) / 2;
  b_alpha = 255 - CLAMP (b_alpha, 0, 255);
  b_alpha = (a * b_alpha) >> 8;

  tmp = (tmp1 * kfgy_scale) >> 4;
  tmp1 = MIN (tmp, 255);

  for (tmp = 0; tmp < ny; tmp++)
    y[tmp] = (y[tmp] < tmp1) ? 0 : y[tmp] - tmp1;

  /* Convert suppressed foreground back to CbCr */
  tmp = (x1 * cb - y1 * cr) >> 7;
  *u = CLAMP (tmp, -128, 127);

  tmp = (x1 * cr + y1 * cb) >> 7;
  *v = CLAMP (tmp, -128, 127);

  /* Deal with noise. For now, a circle around the key color with
     radius of noise_level treated as exact key color. Introduces
     sharp transitions.
   */
  tmp = z * z + (x - kg) * (x - kg);
  tmp = MIN (tmp, 0xffff);

542
  if (tmp < noise_level2)
543 544 545 546 547
    b_alpha = 0;

  return b_alpha;
}

548 549
#define APPLY_MATRIX(m,o,v1,v2,v3) ((m[o*4] * v1 + m[o*4+1] * v2 + m[o*4+2] * v3 + m[o*4+3]) >> 8)

550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634
#define CREATE_ARGB_AYUV_FUNCTIONS(name, A, R, G, B) \
static void \
gst_alpha_set_##name##_ayuv (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint s_alpha = CLAMP ((gint) (alpha->alpha * 256), 0, 256); \
  gint i, j; \
  gint matrix[12]; \
  gint y, u, v; \
  \
  memcpy (matrix, \
      alpha->out_sdtv ? cog_rgb_to_ycbcr_matrix_8bit_sdtv : \
      cog_rgb_to_ycbcr_matrix_8bit_hdtv, 12 * sizeof (gint)); \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      dest[0] = (src[A] * s_alpha) >> 8; \
      \
      y = APPLY_MATRIX (matrix, 0, src[R], src[G], src[B]); \
      u = APPLY_MATRIX (matrix, 1, src[R], src[G], src[B]); \
      v = APPLY_MATRIX (matrix, 2, src[R], src[G], src[B]); \
      \
      dest[1] = y; \
      dest[2] = u; \
      dest[3] = v; \
      \
      dest += 4; \
      src += 4; \
    } \
  } \
} \
\
static void \
gst_alpha_chroma_key_##name##_ayuv (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint i, j; \
  gint a, y, u, v; \
  gint r, g, b; \
  gint smin, smax; \
  gint pa = CLAMP ((gint) (alpha->alpha * 256), 0, 256); \
  gint8 cb = alpha->cb, cr = alpha->cr; \
  gint8 kg = alpha->kg; \
  guint8 accept_angle_tg = alpha->accept_angle_tg; \
  guint8 accept_angle_ctg = alpha->accept_angle_ctg; \
  guint8 one_over_kc = alpha->one_over_kc; \
  guint8 kfgy_scale = alpha->kfgy_scale; \
  guint noise_level2 = alpha->noise_level2; \
  gint matrix[12]; \
  \
  smin = 128 - alpha->black_sensitivity; \
  smax = 128 + alpha->white_sensitivity; \
  \
  memcpy (matrix, \
      alpha->out_sdtv ? cog_rgb_to_ycbcr_matrix_8bit_sdtv : \
      cog_rgb_to_ycbcr_matrix_8bit_hdtv, 12 * sizeof (gint)); \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      a = (src[A] * pa) >> 8; \
      r = src[R]; \
      g = src[G]; \
      b = src[B]; \
      \
      y = APPLY_MATRIX (matrix, 0, r, g, b); \
      u = APPLY_MATRIX (matrix, 1, r, g, b) - 128; \
      v = APPLY_MATRIX (matrix, 2, r, g, b) - 128; \
      \
      a = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, \
          smin, smax, accept_angle_tg, accept_angle_ctg, \
          one_over_kc, kfgy_scale, kg, noise_level2); \
      \
      u += 128; \
      v += 128; \
      \
      dest[0] = a; \
      dest[1] = y; \
      dest[2] = u; \
      dest[3] = v; \
      \
      src += 4; \
      dest += 4; \
    } \
  } \
}
635

636 637 638 639
CREATE_ARGB_AYUV_FUNCTIONS (argb, 0, 1, 2, 3);
CREATE_ARGB_AYUV_FUNCTIONS (abgr, 0, 3, 2, 1);
CREATE_ARGB_AYUV_FUNCTIONS (rgba, 3, 0, 1, 2);
CREATE_ARGB_AYUV_FUNCTIONS (bgra, 3, 2, 1, 0);
640

641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722
#define CREATE_ARGB_ARGB_FUNCTIONS(name, name2, A, R, G, B, A2, R2, G2, B2) \
static void \
gst_alpha_set_##name##_##name2 (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint s_alpha = CLAMP ((gint) (alpha->alpha * 256), 0, 256); \
  gint i, j; \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      dest[A2] = (src[A] * s_alpha) >> 8; \
      \
      dest[R2] = src[R]; \
      dest[G2] = src[G]; \
      dest[B2] = src[B]; \
      \
      dest += 4; \
      src += 4; \
    } \
  } \
} \
\
static void \
gst_alpha_chroma_key_##name##_##name2 (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint i, j; \
  gint a, y, u, v; \
  gint r, g, b; \
  gint smin, smax; \
  gint pa = CLAMP ((gint) (alpha->alpha * 256), 0, 256); \
  gint8 cb = alpha->cb, cr = alpha->cr; \
  gint8 kg = alpha->kg; \
  guint8 accept_angle_tg = alpha->accept_angle_tg; \
  guint8 accept_angle_ctg = alpha->accept_angle_ctg; \
  guint8 one_over_kc = alpha->one_over_kc; \
  guint8 kfgy_scale = alpha->kfgy_scale; \
  guint noise_level2 = alpha->noise_level2; \
  gint matrix[12], matrix2[12]; \
  \
  smin = 128 - alpha->black_sensitivity; \
  smax = 128 + alpha->white_sensitivity; \
  \
  memcpy (matrix, \
      cog_rgb_to_ycbcr_matrix_8bit_sdtv, \
      12 * sizeof (gint)); \
  memcpy (matrix2, \
      cog_ycbcr_to_rgb_matrix_8bit_sdtv, \
      12 * sizeof (gint)); \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      a = (src[A] * pa) >> 8; \
      r = src[R]; \
      g = src[G]; \
      b = src[B]; \
      \
      y = APPLY_MATRIX (matrix, 0, r, g, b); \
      u = APPLY_MATRIX (matrix, 1, r, g, b) - 128; \
      v = APPLY_MATRIX (matrix, 2, r, g, b) - 128; \
      \
      a = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, \
          smin, smax, accept_angle_tg, accept_angle_ctg, \
          one_over_kc, kfgy_scale, kg, noise_level2); \
      \
      u += 128; \
      v += 128; \
      \
      r = APPLY_MATRIX (matrix2, 0, y, u, v); \
      g = APPLY_MATRIX (matrix2, 1, y, u, v); \
      b = APPLY_MATRIX (matrix2, 2, y, u, v); \
      \
      dest[A2] = a; \
      dest[R2] = CLAMP (r, 0, 255); \
      dest[G2] = CLAMP (g, 0, 255); \
      dest[B2] = CLAMP (b, 0, 255); \
      \
      src += 4; \
      dest += 4; \
    } \
  } \
}
723

724 725 726 727
CREATE_ARGB_ARGB_FUNCTIONS (argb, argb, 0, 1, 2, 3, 0, 1, 2, 3);
CREATE_ARGB_ARGB_FUNCTIONS (argb, abgr, 0, 1, 2, 3, 0, 3, 2, 1);
CREATE_ARGB_ARGB_FUNCTIONS (argb, rgba, 0, 1, 2, 3, 3, 0, 1, 2);
CREATE_ARGB_ARGB_FUNCTIONS (argb, bgra, 0, 1, 2, 3, 3, 2, 1, 0);
728

729 730 731 732
CREATE_ARGB_ARGB_FUNCTIONS (abgr, argb, 0, 3, 2, 1, 0, 1, 2, 3);
CREATE_ARGB_ARGB_FUNCTIONS (abgr, abgr, 0, 3, 2, 1, 0, 3, 2, 1);
CREATE_ARGB_ARGB_FUNCTIONS (abgr, rgba, 0, 3, 2, 1, 3, 0, 1, 2);
CREATE_ARGB_ARGB_FUNCTIONS (abgr, bgra, 0, 3, 2, 1, 3, 2, 1, 0);
733

734 735 736 737 738 739 740 741 742
CREATE_ARGB_ARGB_FUNCTIONS (rgba, argb, 3, 0, 1, 2, 0, 1, 2, 3);
CREATE_ARGB_ARGB_FUNCTIONS (rgba, abgr, 3, 0, 1, 2, 0, 3, 2, 1);
CREATE_ARGB_ARGB_FUNCTIONS (rgba, rgba, 3, 0, 1, 2, 3, 0, 1, 2);
CREATE_ARGB_ARGB_FUNCTIONS (rgba, bgra, 3, 0, 1, 2, 3, 2, 1, 0);

CREATE_ARGB_ARGB_FUNCTIONS (bgra, argb, 3, 2, 1, 0, 0, 1, 2, 3);
CREATE_ARGB_ARGB_FUNCTIONS (bgra, abgr, 3, 2, 1, 0, 0, 3, 2, 1);
CREATE_ARGB_ARGB_FUNCTIONS (bgra, rgba, 3, 2, 1, 0, 3, 0, 1, 2);
CREATE_ARGB_ARGB_FUNCTIONS (bgra, bgra, 3, 2, 1, 0, 3, 2, 1, 0);
743

744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834
#define CREATE_AYUV_ARGB_FUNCTIONS(name, A, R, G, B) \
static void \
gst_alpha_set_ayuv_##name (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint s_alpha = CLAMP ((gint) (alpha->alpha * 256), 0, 256); \
  gint y, x; \
  gint matrix[12]; \
  gint r, g, b; \
  \
  memcpy (matrix, \
      alpha->in_sdtv ? cog_ycbcr_to_rgb_matrix_8bit_sdtv : \
      cog_ycbcr_to_rgb_matrix_8bit_hdtv, 12 * sizeof (gint)); \
  \
  for (y = 0; y < height; y++) { \
    for (x = 0; x < width; x++) { \
      dest[A] = (src[0] * s_alpha) >> 8; \
      \
      r = APPLY_MATRIX (matrix, 0, src[1], src[2], src[3]); \
      g = APPLY_MATRIX (matrix, 1, src[1], src[2], src[3]); \
      b = APPLY_MATRIX (matrix, 2, src[1], src[2], src[3]); \
      \
      dest[R] = CLAMP (r, 0, 255); \
      dest[G] = CLAMP (g, 0, 255); \
      dest[B] = CLAMP (b, 0, 255); \
      \
      dest += 4; \
      src += 4; \
    } \
  } \
} \
\
static void \
gst_alpha_chroma_key_ayuv_##name (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint i, j; \
  gint a, y, u, v; \
  gint r, g, b; \
  gint smin, smax; \
  gint pa = CLAMP ((gint) (alpha->alpha * 256), 0, 256); \
  gint8 cb = alpha->cb, cr = alpha->cr; \
  gint8 kg = alpha->kg; \
  guint8 accept_angle_tg = alpha->accept_angle_tg; \
  guint8 accept_angle_ctg = alpha->accept_angle_ctg; \
  guint8 one_over_kc = alpha->one_over_kc; \
  guint8 kfgy_scale = alpha->kfgy_scale; \
  guint noise_level2 = alpha->noise_level2; \
  gint matrix[12]; \
  \
  smin = 128 - alpha->black_sensitivity; \
  smax = 128 + alpha->white_sensitivity; \
  \
  memcpy (matrix, \
      alpha->in_sdtv ? cog_ycbcr_to_rgb_matrix_8bit_sdtv : \
      cog_ycbcr_to_rgb_matrix_8bit_hdtv, 12 * sizeof (gint)); \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      a = (src[0] * pa) >> 8; \
      y = src[1]; \
      u = src[2] - 128; \
      v = src[3] - 128; \
      \
      a = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, \
          smin, smax, accept_angle_tg, accept_angle_ctg, \
          one_over_kc, kfgy_scale, kg, noise_level2); \
      \
      u += 128; \
      v += 128; \
      \
      r = APPLY_MATRIX (matrix, 0, y, u, v); \
      g = APPLY_MATRIX (matrix, 1, y, u, v); \
      b = APPLY_MATRIX (matrix, 2, y, u, v); \
      \
      dest[A] = a; \
      dest[R] = CLAMP (r, 0, 255); \
      dest[G] = CLAMP (g, 0, 255); \
      dest[B] = CLAMP (b, 0, 255); \
      \
      src += 4; \
      dest += 4; \
    } \
  } \
}

CREATE_AYUV_ARGB_FUNCTIONS (argb, 0, 1, 2, 3);
CREATE_AYUV_ARGB_FUNCTIONS (abgr, 0, 3, 2, 1);
CREATE_AYUV_ARGB_FUNCTIONS (rgba, 3, 0, 1, 2);
CREATE_AYUV_ARGB_FUNCTIONS (bgra, 3, 2, 1, 0);

835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874
static void
gst_alpha_set_ayuv_ayuv (const guint8 * src, guint8 * dest, gint width,
    gint height, GstAlpha * alpha)
{
  gint s_alpha = CLAMP ((gint) (alpha->alpha * 256), 0, 256);
  gint y, x;

  if (alpha->in_sdtv == alpha->out_sdtv) {
    for (y = 0; y < height; y++) {
      for (x = 0; x < width; x++) {
        dest[0] = (src[0] * s_alpha) >> 8;
        dest[1] = src[1];
        dest[2] = src[2];
        dest[3] = src[3];

        dest += 4;
        src += 4;
      }
    }
  } else {
    gint matrix[12];

    memcpy (matrix,
        alpha->out_sdtv ? cog_ycbcr_hdtv_to_ycbcr_sdtv_matrix_8bit :
        cog_ycbcr_sdtv_to_ycbcr_hdtv_matrix_8bit, 12 * sizeof (gint));

    for (y = 0; y < height; y++) {
      for (x = 0; x < width; x++) {
        dest[0] = (src[0] * s_alpha) >> 8;
        dest[1] = APPLY_MATRIX (matrix, 0, src[1], src[2], src[3]);
        dest[2] = APPLY_MATRIX (matrix, 1, src[1], src[2], src[3]);
        dest[3] = APPLY_MATRIX (matrix, 2, src[1], src[2], src[3]);

        dest += 4;
        src += 4;
      }
    }
  }
}

875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966
static void
gst_alpha_chroma_key_ayuv_ayuv (const guint8 * src, guint8 * dest,
    gint width, gint height, GstAlpha * alpha)
{
  gint i, j;
  gint a, y, u, v;
  gint smin, smax;
  gint pa = CLAMP ((gint) (alpha->alpha * 256), 0, 256);
  gint8 cb = alpha->cb, cr = alpha->cr;
  gint8 kg = alpha->kg;
  guint8 accept_angle_tg = alpha->accept_angle_tg;
  guint8 accept_angle_ctg = alpha->accept_angle_ctg;
  guint8 one_over_kc = alpha->one_over_kc;
  guint8 kfgy_scale = alpha->kfgy_scale;
  guint noise_level2 = alpha->noise_level2;

  smin = 128 - alpha->black_sensitivity;
  smax = 128 + alpha->white_sensitivity;

  if (alpha->in_sdtv == alpha->out_sdtv) {
    for (i = 0; i < height; i++) {
      for (j = 0; j < width; j++) {
        a = (src[0] * pa) >> 8;
        y = src[1];
        u = src[2] - 128;
        v = src[3] - 128;

        a = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb,
            smin, smax, accept_angle_tg, accept_angle_ctg,
            one_over_kc, kfgy_scale, kg, noise_level2);

        u += 128;
        v += 128;

        dest[0] = a;
        dest[1] = y;
        dest[2] = u;
        dest[3] = v;

        src += 4;
        dest += 4;
      }
    }
  } else {
    gint matrix[12];

    memcpy (matrix,
        alpha->out_sdtv ? cog_ycbcr_hdtv_to_ycbcr_sdtv_matrix_8bit :
        cog_ycbcr_sdtv_to_ycbcr_hdtv_matrix_8bit, 12 * sizeof (gint));

    for (i = 0; i < height; i++) {
      for (j = 0; j < width; j++) {
        a = (src[0] * pa) >> 8;
        y = APPLY_MATRIX (matrix, 0, src[1], src[2], src[3]);
        u = APPLY_MATRIX (matrix, 1, src[1], src[2], src[3]) - 128;
        v = APPLY_MATRIX (matrix, 2, src[1], src[2], src[3]) - 128;

        a = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb,
            smin, smax, accept_angle_tg, accept_angle_ctg,
            one_over_kc, kfgy_scale, kg, noise_level2);

        u += 128;
        v += 128;

        dest[0] = a;
        dest[1] = y;
        dest[2] = u;
        dest[3] = v;

        src += 4;
        dest += 4;
      }
    }
  }
}

#define CREATE_I420_ARGB_FUNCTIONS(name, A, R, G, B) \
static void \
gst_alpha_set_i420_##name (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint b_alpha = CLAMP ((gint) (alpha->alpha * 255), 0, 255); \
  const guint8 *srcY; \
  const guint8 *srcU; \
  const guint8 *srcV; \
  gint i, j; \
  gint src_wrap, src_uv_wrap; \
  gint y_stride, uv_stride; \
  gboolean odd_width; \
  gint matrix[12]; \
  gint r, g, b; \
  \
967 968
  y_stride = gst_video_format_get_row_stride (alpha->in_format, 0, width); \
  uv_stride = gst_video_format_get_row_stride (alpha->in_format, 1, width); \
969 970 971 972 973
  \
  src_wrap = y_stride - width; \
  src_uv_wrap = uv_stride - (width / 2); \
  \
  srcY = src; \
974
  srcU = src + gst_video_format_get_component_offset (alpha->in_format, \
975
      1, width, height); \
976
  srcV = src + gst_video_format_get_component_offset (alpha->in_format, \
977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159
      2, width, height); \
  \
  odd_width = (width % 2 != 0); \
  \
  memcpy (matrix, \
      alpha->in_sdtv ? cog_ycbcr_to_rgb_matrix_8bit_sdtv : \
      cog_ycbcr_to_rgb_matrix_8bit_hdtv, 12 * sizeof (gint)); \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width / 2; j++) { \
      dest[A] = b_alpha; \
      r = APPLY_MATRIX (matrix, 0, srcY[0], srcU[0], srcV[0]); \
      g = APPLY_MATRIX (matrix, 1, srcY[0], srcU[0], srcV[0]); \
      b = APPLY_MATRIX (matrix, 2, srcY[0], srcU[0], srcV[0]); \
      dest[R] = CLAMP (r, 0, 255); \
      dest[G] = CLAMP (g, 0, 255); \
      dest[B] = CLAMP (b, 0, 255); \
      \
      dest[4 + A] = b_alpha; \
      r = APPLY_MATRIX (matrix, 0, srcY[1], srcU[0], srcV[0]); \
      g = APPLY_MATRIX (matrix, 1, srcY[1], srcU[0], srcV[0]); \
      b = APPLY_MATRIX (matrix, 2, srcY[1], srcU[0], srcV[0]); \
      dest[4 + R] = CLAMP (r, 0, 255); \
      dest[4 + G] = CLAMP (g, 0, 255); \
      dest[4 + B] = CLAMP (b, 0, 255); \
      \
      dest += 8; \
      srcY += 2; \
      srcU++; \
      srcV++; \
    } \
    /* Might have one odd column left to do */ \
    if (odd_width) { \
      dest[A] = b_alpha; \
      r = APPLY_MATRIX (matrix, 0, srcY[0], srcU[0], srcV[0]); \
      g = APPLY_MATRIX (matrix, 1, srcY[0], srcU[0], srcV[0]); \
      b = APPLY_MATRIX (matrix, 2, srcY[0], srcU[0], srcV[0]); \
      dest[R] = CLAMP (r, 0, 255); \
      dest[G] = CLAMP (g, 0, 255); \
      dest[B] = CLAMP (b, 0, 255); \
      \
      dest += 4; \
      srcY++; \
    } \
    if (i % 2 == 0) { \
      srcU -= width / 2; \
      srcV -= width / 2; \
    } else { \
      srcU += src_uv_wrap; \
      srcV += src_uv_wrap; \
    } \
    srcY += src_wrap; \
  } \
} \
\
static inline void \
gst_alpha_chromakey_row_i420_##name (GstAlpha * alpha, guint8 * dest1, \
    guint8 * dest2, const guint8 * srcY1, const guint8 * srcY2, \
    const guint8 * srcU, const guint8 * srcV, gint width) \
{ \
  gint xpos; \
  gint a, a2, u, v; \
  gint r, g, b; \
  gint smin, smax; \
  gint8 cb = alpha->cb, cr = alpha->cr; \
  gint8 kg = alpha->kg; \
  guint8 accept_angle_tg = alpha->accept_angle_tg; \
  guint8 accept_angle_ctg = alpha->accept_angle_ctg; \
  guint8 one_over_kc = alpha->one_over_kc; \
  guint8 kfgy_scale = alpha->kfgy_scale; \
  guint noise_level2 = alpha->noise_level2; \
  gint matrix[12], y; \
  \
  a = CLAMP ((gint) (alpha->alpha * 255), 0, 255); \
  smin = 128 - alpha->black_sensitivity; \
  smax = 128 + alpha->white_sensitivity; \
  \
  memcpy (matrix, \
      alpha->in_sdtv ? cog_ycbcr_to_rgb_matrix_8bit_sdtv : \
      cog_ycbcr_to_rgb_matrix_8bit_hdtv, 12 * sizeof (gint)); \
  \
  for (xpos = 0; xpos < width / 2; xpos++) { \
    y = srcY1[0]; \
    u = srcU[0] - 128; \
    v = srcV[0] - 128; \
    \
    a2 = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, smin, \
        smax, accept_angle_tg, accept_angle_ctg, \
        one_over_kc, kfgy_scale, kg, noise_level2); \
    \
    u += 128; \
    v += 128; \
    \
    r = APPLY_MATRIX (matrix, 0, y, u, v); \
    g = APPLY_MATRIX (matrix, 1, y, u, v); \
    b = APPLY_MATRIX (matrix, 2, y, u, v); \
    \
    dest1[A] = a2; \
    dest1[R] = CLAMP (r, 0, 255); \
    dest1[G] = CLAMP (g, 0, 255); \
    dest1[B] = CLAMP (b, 0, 255); \
    \
    y = srcY1[1]; \
    u = srcU[0] - 128; \
    v = srcV[0] - 128; \
    \
    a2 = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, smin, \
        smax, accept_angle_tg, accept_angle_ctg, \
        one_over_kc, kfgy_scale, kg, noise_level2); \
    \
    u += 128; \
    v += 128; \
    \
    r = APPLY_MATRIX (matrix, 0, y, u, v); \
    g = APPLY_MATRIX (matrix, 1, y, u, v); \
    b = APPLY_MATRIX (matrix, 2, y, u, v); \
    \
    dest1[4 + A] = a2; \
    dest1[4 + R] = CLAMP (r, 0, 255); \
    dest1[4 + G] = CLAMP (g, 0, 255); \
    dest1[4 + B] = CLAMP (b, 0, 255); \
    \
    y = srcY2[0]; \
    u = srcU[0] - 128; \
    v = srcV[0] - 128; \
    \
    a2 = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, smin, \
        smax, accept_angle_tg, accept_angle_ctg, \
        one_over_kc, kfgy_scale, kg, noise_level2); \
    \
    u += 128; \
    v += 128; \
    \
    r = APPLY_MATRIX (matrix, 0, y, u, v); \
    g = APPLY_MATRIX (matrix, 1, y, u, v); \
    b = APPLY_MATRIX (matrix, 2, y, u, v); \
    \
    dest2[A] = a2; \
    dest2[R] = CLAMP (r, 0, 255); \
    dest2[G] = CLAMP (g, 0, 255); \
    dest2[B] = CLAMP (b, 0, 255); \
    \
    y = srcY2[1]; \
    u = srcU[0] - 128; \
    v = srcV[0] - 128; \
    \
    a2 = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, smin, \
        smax, accept_angle_tg, accept_angle_ctg, \
        one_over_kc, kfgy_scale, kg, noise_level2); \
    \
    u += 128; \
    v += 128; \
    \
    r = APPLY_MATRIX (matrix, 0, y, u, v); \
    g = APPLY_MATRIX (matrix, 1, y, u, v); \
    b = APPLY_MATRIX (matrix, 2, y, u, v); \
    \
    dest2[4 + A] = a2; \
    dest2[4 + R] = CLAMP (r, 0, 255); \
    dest2[4 + G] = CLAMP (g, 0, 255); \
    dest2[4 + B] = CLAMP (b, 0, 255); \
    \
    srcY1 += 2; \
    srcY2 += 2; \
    srcU++; \
    srcV++; \
    dest1 += 8; \
    dest2 += 8; \
  } \
} \
\
static void \
gst_alpha_chroma_key_i420_##name (const guint8 * src, guint8 * dest, \
    gint width, gint height, GstAlpha * alpha) \
{ \
  const guint8 *srcY1, *srcY2, *srcU, *srcV; \
  guint8 *dest1, *dest2; \
  gint ypos; \
  gint dest_stride, src_y_stride, src_uv_stride; \
  \
  dest_stride = \
      gst_video_format_get_row_stride (GST_VIDEO_FORMAT_AYUV, 0, width); \
  src_y_stride = \
1160
      gst_video_format_get_row_stride (alpha->in_format, 0, width); \
1161
  src_uv_stride = \
1162
      gst_video_format_get_row_stride (alpha->in_format, 1, width); \
1163 1164 1165 1166
  \
  srcY1 = src; \
  srcY2 = src + src_y_stride; \
  \
1167
  srcU = src + gst_video_format_get_component_offset (alpha->in_format, \
1168
      1, width, height); \
1169
  srcV = src + gst_video_format_get_component_offset (alpha->in_format, \
1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
      2, width, height); \
  \
  dest1 = dest; \
  dest2 = dest + dest_stride; \
  \
  /* Redefine Y strides to skip 2 lines at a time ... */ \
  dest_stride *= 2; \
  src_y_stride *= 2; \
  \
  for (ypos = 0; ypos < height / 2; ypos++) { \
    gst_alpha_chromakey_row_i420_##name (alpha, dest1, dest2, \
        srcY1, srcY2, srcU, srcV, width); \
    \
    dest1 += dest_stride; \
    dest2 += dest_stride; \
    srcY1 += src_y_stride; \
    srcY2 += src_y_stride; \
    srcU += src_uv_stride; \
    srcV += src_uv_stride; \
  } \
}

CREATE_I420_ARGB_FUNCTIONS (argb, 0, 1, 2, 3);
CREATE_I420_ARGB_FUNCTIONS (abgr, 0, 3, 2, 1);
CREATE_I420_ARGB_FUNCTIONS (rgba, 3, 0, 1, 2);
CREATE_I420_ARGB_FUNCTIONS (bgra, 3, 2, 1, 0);

1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402
#define CREATE_RGB_AYUV_FUNCTIONS(name, R, G, B, bpp) \
static void \
gst_alpha_set_##name##_ayuv (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint s_alpha = CLAMP ((gint) (alpha->alpha * 255), 0, 255); \
  gint i, j; \
  gint matrix[12]; \
  gint y, u, v; \
  \
  memcpy (matrix, \
      alpha->out_sdtv ? cog_rgb_to_ycbcr_matrix_8bit_sdtv : \
      cog_rgb_to_ycbcr_matrix_8bit_hdtv, 12 * sizeof (gint)); \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      dest[0] = s_alpha; \
      \
      y = APPLY_MATRIX (matrix, 0, src[R], src[G], src[B]); \
      u = APPLY_MATRIX (matrix, 1, src[R], src[G], src[B]); \
      v = APPLY_MATRIX (matrix, 2, src[R], src[G], src[B]); \
      \
      dest[1] = y; \
      dest[2] = u; \
      dest[3] = v; \
      \
      dest += 4; \
      src += bpp; \
    } \
  } \
} \
\
static void \
gst_alpha_chroma_key_##name##_ayuv (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint i, j; \
  gint a, y, u, v; \
  gint r, g, b; \
  gint smin, smax; \
  gint pa = CLAMP ((gint) (alpha->alpha * 255), 0, 255); \
  gint8 cb = alpha->cb, cr = alpha->cr; \
  gint8 kg = alpha->kg; \
  guint8 accept_angle_tg = alpha->accept_angle_tg; \
  guint8 accept_angle_ctg = alpha->accept_angle_ctg; \
  guint8 one_over_kc = alpha->one_over_kc; \
  guint8 kfgy_scale = alpha->kfgy_scale; \
  guint noise_level2 = alpha->noise_level2; \
  gint matrix[12]; \
  \
  smin = 128 - alpha->black_sensitivity; \
  smax = 128 + alpha->white_sensitivity; \
  \
  memcpy (matrix, \
      alpha->out_sdtv ? cog_rgb_to_ycbcr_matrix_8bit_sdtv : \
      cog_rgb_to_ycbcr_matrix_8bit_hdtv, 12 * sizeof (gint)); \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      a = pa; \
      r = src[R]; \
      g = src[G]; \
      b = src[B]; \
      \
      y = APPLY_MATRIX (matrix, 0, r, g, b); \
      u = APPLY_MATRIX (matrix, 1, r, g, b) - 128; \
      v = APPLY_MATRIX (matrix, 2, r, g, b) - 128; \
      \
      a = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, \
          smin, smax, accept_angle_tg, accept_angle_ctg, \
          one_over_kc, kfgy_scale, kg, noise_level2); \
      \
      u += 128; \
      v += 128; \
      \
      dest[0] = a; \
      dest[1] = y; \
      dest[2] = u; \
      dest[3] = v; \
      \
      src += bpp; \
      dest += 4; \
    } \
  } \
}

CREATE_RGB_AYUV_FUNCTIONS (xrgb, 1, 2, 3, 4);
CREATE_RGB_AYUV_FUNCTIONS (xbgr, 3, 2, 1, 4);
CREATE_RGB_AYUV_FUNCTIONS (rgbx, 0, 1, 2, 4);
CREATE_RGB_AYUV_FUNCTIONS (bgrx, 2, 1, 0, 4);
CREATE_RGB_AYUV_FUNCTIONS (rgb, 0, 1, 2, 3);
CREATE_RGB_AYUV_FUNCTIONS (bgr, 2, 1, 0, 3);

#define CREATE_RGB_ARGB_FUNCTIONS(name, name2, R, G, B, A2, R2, G2, B2, bpp) \
static void \
gst_alpha_set_##name##_##name2 (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint s_alpha = CLAMP ((gint) (alpha->alpha * 255), 0, 255); \
  gint i, j; \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      dest[A2] = s_alpha; \
      \
      dest[R2] = src[R]; \
      dest[G2] = src[G]; \
      dest[B2] = src[B]; \
      \
      dest += 4; \
      src += bpp; \
    } \
  } \
} \
\
static void \
gst_alpha_chroma_key_##name##_##name2 (const guint8 * src, guint8 * dest, gint width, \
    gint height, GstAlpha * alpha) \
{ \
  gint i, j; \
  gint a, y, u, v; \
  gint r, g, b; \
  gint smin, smax; \
  gint pa = CLAMP ((gint) (alpha->alpha * 255), 0, 255); \
  gint8 cb = alpha->cb, cr = alpha->cr; \
  gint8 kg = alpha->kg; \
  guint8 accept_angle_tg = alpha->accept_angle_tg; \
  guint8 accept_angle_ctg = alpha->accept_angle_ctg; \
  guint8 one_over_kc = alpha->one_over_kc; \
  guint8 kfgy_scale = alpha->kfgy_scale; \
  guint noise_level2 = alpha->noise_level2; \
  gint matrix[12], matrix2[12]; \
  \
  smin = 128 - alpha->black_sensitivity; \
  smax = 128 + alpha->white_sensitivity; \
  \
  memcpy (matrix, \
      cog_rgb_to_ycbcr_matrix_8bit_sdtv, \
      12 * sizeof (gint)); \
  memcpy (matrix2, \
      cog_ycbcr_to_rgb_matrix_8bit_sdtv, \
      12 * sizeof (gint)); \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      a = pa; \
      r = src[R]; \
      g = src[G]; \
      b = src[B]; \
      \
      y = APPLY_MATRIX (matrix, 0, r, g, b); \
      u = APPLY_MATRIX (matrix, 1, r, g, b) - 128; \
      v = APPLY_MATRIX (matrix, 2, r, g, b) - 128; \
      \
      a = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, \
          smin, smax, accept_angle_tg, accept_angle_ctg, \
          one_over_kc, kfgy_scale, kg, noise_level2); \
      \
      u += 128; \
      v += 128; \
      \
      r = APPLY_MATRIX (matrix2, 0, y, u, v); \
      g = APPLY_MATRIX (matrix2, 1, y, u, v); \
      b = APPLY_MATRIX (matrix2, 2, y, u, v); \
      \
      dest[A2] = a; \
      dest[R2] = CLAMP (r, 0, 255); \
      dest[G2] = CLAMP (g, 0, 255); \
      dest[B2] = CLAMP (b, 0, 255); \
      \
      src += bpp; \
      dest += 4; \
    } \
  } \
}

CREATE_RGB_ARGB_FUNCTIONS (xrgb, argb, 1, 2, 3, 0, 1, 2, 3, 4);
CREATE_RGB_ARGB_FUNCTIONS (xrgb, abgr, 1, 2, 3, 0, 3, 2, 1, 4);
CREATE_RGB_ARGB_FUNCTIONS (xrgb, rgba, 1, 2, 3, 3, 0, 1, 2, 4);
CREATE_RGB_ARGB_FUNCTIONS (xrgb, bgra, 1, 2, 3, 3, 2, 1, 0, 4);

CREATE_RGB_ARGB_FUNCTIONS (xbgr, argb, 3, 2, 1, 0, 1, 2, 3, 4);
CREATE_RGB_ARGB_FUNCTIONS (xbgr, abgr, 3, 2, 1, 0, 3, 2, 1, 4);
CREATE_RGB_ARGB_FUNCTIONS (xbgr, rgba, 3, 2, 1, 3, 0, 1, 2, 4);
CREATE_RGB_ARGB_FUNCTIONS (xbgr, bgra, 3, 2, 1, 3, 2, 1, 0, 4);

CREATE_RGB_ARGB_FUNCTIONS (rgbx, argb, 0, 1, 2, 0, 1, 2, 3, 4);
CREATE_RGB_ARGB_FUNCTIONS (rgbx, abgr, 0, 1, 2, 0, 3, 2, 1, 4);
CREATE_RGB_ARGB_FUNCTIONS (rgbx, rgba, 0, 1, 2, 3, 0, 1, 2, 4);
CREATE_RGB_ARGB_FUNCTIONS (rgbx, bgra, 0, 1, 2, 3, 2, 1, 0, 4);

CREATE_RGB_ARGB_FUNCTIONS (bgrx, argb, 2, 1, 0, 0, 1, 2, 3, 4);
CREATE_RGB_ARGB_FUNCTIONS (bgrx, abgr, 2, 1, 0, 0, 3, 2, 1, 4);
CREATE_RGB_ARGB_FUNCTIONS (bgrx, rgba, 2, 1, 0, 3, 0, 1, 2, 4);
CREATE_RGB_ARGB_FUNCTIONS (bgrx, bgra, 2, 1, 0, 3, 2, 1, 0, 4);

CREATE_RGB_ARGB_FUNCTIONS (rgb, argb, 0, 1, 2, 0, 1, 2, 3, 3);
CREATE_RGB_ARGB_FUNCTIONS (rgb, abgr, 0, 1, 2, 0, 3, 2, 1, 3);
CREATE_RGB_ARGB_FUNCTIONS (rgb, rgba, 0, 1, 2, 3, 0, 1, 2, 3);
CREATE_RGB_ARGB_FUNCTIONS (rgb, bgra, 0, 1, 2, 3, 2, 1, 0, 3);

CREATE_RGB_ARGB_FUNCTIONS (bgr, argb, 2, 1, 0, 0, 1, 2, 3, 3);
CREATE_RGB_ARGB_FUNCTIONS (bgr, abgr, 2, 1, 0, 0, 3, 2, 1, 3);
CREATE_RGB_ARGB_FUNCTIONS (bgr, rgba, 2, 1, 0, 3, 0, 1, 2, 3);
CREATE_RGB_ARGB_FUNCTIONS (bgr, bgra, 2, 1, 0, 3, 2, 1, 0, 3);

1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415
static void
gst_alpha_set_i420_ayuv (const guint8 * src, guint8 * dest, gint width,
    gint height, GstAlpha * alpha)
{
  gint b_alpha = CLAMP ((gint) (alpha->alpha * 255), 0, 255);
  const guint8 *srcY;
  const guint8 *srcU;
  const guint8 *srcV;
  gint i, j;
  gint src_wrap, src_uv_wrap;
  gint y_stride, uv_stride;
  gboolean odd_width;

1416 1417
  y_stride = gst_video_format_get_row_stride (alpha->in_format, 0, width);
  uv_stride = gst_video_format_get_row_stride (alpha->in_format, 1, width);
1418 1419 1420 1421 1422

  src_wrap = y_stride - width;
  src_uv_wrap = uv_stride - (width / 2);

  srcY = src;
1423
  srcU = src + gst_video_format_get_component_offset (alpha->in_format,
1424
      1, width, height);
1425
  srcV = src + gst_video_format_get_component_offset (alpha->in_format,
1426 1427 1428 1429
      2, width, height);

  odd_width = (width % 2 != 0);

1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464
  if (alpha->in_sdtv == alpha->out_sdtv) {
    for (i = 0; i < height; i++) {
      for (j = 0; j < width / 2; j++) {
        dest[0] = b_alpha;
        dest[1] = srcY[0];
        dest[2] = srcU[0];
        dest[3] = srcV[0];
        dest[4] = b_alpha;
        dest[5] = srcY[1];
        dest[6] = srcU[0];
        dest[7] = srcV[0];

        dest += 8;
        srcY += 2;
        srcU++;
        srcV++;
      }
      /* Might have one odd column left to do */
      if (odd_width) {
        dest[0] = b_alpha;
        dest[1] = srcY[0];
        dest[2] = srcU[0];
        dest[3] = srcV[0];

        dest += 4;
        srcY++;
      }
      if (i % 2 == 0) {
        srcU -= width / 2;
        srcV -= width / 2;
      } else {
        srcU += src_uv_wrap;
        srcV += src_uv_wrap;
      }
      srcY += src_wrap;
1465
    }
1466
  } else {
1467 1468 1469
    gint matrix[12];

    memcpy (matrix,
1470
        alpha->out_sdtv ? cog_ycbcr_hdtv_to_ycbcr_sdtv_matrix_8bit :
1471
        cog_ycbcr_sdtv_to_ycbcr_hdtv_matrix_8bit, 12 * sizeof (gint));
1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506

    for (i = 0; i < height; i++) {
      for (j = 0; j < width / 2; j++) {
        dest[0] = b_alpha;
        dest[1] = APPLY_MATRIX (matrix, 0, srcY[0], srcU[0], srcV[0]);
        dest[2] = APPLY_MATRIX (matrix, 1, srcY[0], srcU[0], srcV[0]);
        dest[3] = APPLY_MATRIX (matrix, 2, srcY[0], srcU[0], srcV[0]);
        dest[4] = b_alpha;
        dest[5] = APPLY_MATRIX (matrix, 0, srcY[1], srcU[0], srcV[0]);
        dest[6] = APPLY_MATRIX (matrix, 1, srcY[1], srcU[0], srcV[0]);
        dest[7] = APPLY_MATRIX (matrix, 2, srcY[1], srcU[0], srcV[0]);

        dest += 8;
        srcY += 2;
        srcU++;
        srcV++;
      }
      /* Might have one odd column left to do */
      if (odd_width) {
        dest[0] = b_alpha;
        dest[1] = APPLY_MATRIX (matrix, 0, srcY[0], srcU[0], srcV[0]);
        dest[2] = APPLY_MATRIX (matrix, 1, srcY[0], srcU[0], srcV[0]);
        dest[3] = APPLY_MATRIX (matrix, 2, srcY[0], srcU[0], srcV[0]);

        dest += 4;
        srcY++;
      }
      if (i % 2 == 0) {
        srcU -= width / 2;
        srcV -= width / 2;
      } else {
        srcU += src_uv_wrap;
        srcV += src_uv_wrap;
      }
      srcY += src_wrap;
1507 1508 1509 1510
    }
  }
}

1511
static inline void
1512 1513 1514
gst_alpha_chromakey_row_i420_ayuv (GstAlpha * alpha, guint8 * dest1,
    guint8 * dest2, const guint8 * srcY1, const guint8 * srcY2,
    const guint8 * srcU, const guint8 * srcV, gint width)
1515 1516
{
  gint xpos;
1517
  gint a, a2, u, v;
1518
  gint smin, smax;
1519 1520 1521 1522 1523 1524 1525
  gint8 cb = alpha->cb, cr = alpha->cr;
  gint8 kg = alpha->kg;
  guint8 accept_angle_tg = alpha->accept_angle_tg;
  guint8 accept_angle_ctg = alpha->accept_angle_ctg;
  guint8 one_over_kc = alpha->one_over_kc;
  guint8 kfgy_scale = alpha->kfgy_scale;
  guint noise_level2 = alpha->noise_level2;
1526

1527
  a = CLAMP ((gint) (alpha->alpha * 255), 0, 255);
1528 1529 1530
  smin = 128 - alpha->black_sensitivity;
  smax = 128 + alpha->white_sensitivity;

1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541
  if (alpha->in_sdtv == alpha->out_sdtv) {
    gint y[4];

    for (xpos = 0; xpos < width / 2; xpos++) {
      y[0] = srcY1[0];
      y[1] = srcY1[1];
      y[2] = srcY2[0];
      y[3] = srcY2[1];
      u = srcU[0] - 128;
      v = srcV[0] - 128;

1542 1543 1544
      a2 = chroma_keying_yuv (a, y, 4, &u, &v, cr, cb, smin,
          smax, accept_angle_tg, accept_angle_ctg,
          one_over_kc, kfgy_scale, kg, noise_level2);
1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574

      u += 128;
      v += 128;

      dest1[0] = a2;
      dest1[1] = y[0];
      dest1[2] = u;
      dest1[3] = v;
      dest1[4] = a2;
      dest1[5] = y[1];
      dest1[6] = u;
      dest1[7] = v;

      dest2[0] = a2;
      dest2[1] = y[2];
      dest2[2] = u;
      dest2[3] = v;
      dest2[4] = a2;
      dest2[5] = y[3];
      dest2[6] = u;
      dest2[7] = v;

      srcY1 += 2;
      srcY2 += 2;
      srcU++;
      srcV++;
      dest1 += 8;
      dest2 += 8;
    }
  } else {
1575 1576 1577
    gint matrix[12], y;

    memcpy (matrix,
1578
        alpha->out_sdtv ? cog_ycbcr_hdtv_to_ycbcr_sdtv_matrix_8bit :
1579
        cog_ycbcr_sdtv_to_ycbcr_hdtv_matrix_8bit, 12 * sizeof (gint));
1580 1581 1582 1583 1584 1585

    for (xpos = 0; xpos < width / 2; xpos++) {
      y = APPLY_MATRIX (matrix, 0, srcY1[0], srcU[0], srcV[0]);
      u = APPLY_MATRIX (matrix, 1, srcY1[0], srcU[0], srcV[0]) - 128;
      v = APPLY_MATRIX (matrix, 2, srcY1[0], srcU[0], srcV[0]) - 128;

1586 1587 1588
      a2 = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, smin,
          smax, accept_angle_tg, accept_angle_ctg,
          one_over_kc, kfgy_scale, kg, noise_level2);