blend.c 26.8 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
/* 
 * Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
 * Copyright (C) 2006 Mindfruit Bv.
 *   Author: Sjoerd Simons <sjoerd@luon.net>
 *   Author: Alex Ugarte <alexugarte@gmail.com>
 * Copyright (C) 2009 Alex Ugarte <augarte@vicomtech.org>
 * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
 *
 * 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.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "blend.h"
30
#include "blendorc.h"
31 32 33

#include <string.h>

34 35
#include <gst/video/video.h>

36 37
#define BLEND(D,S,alpha) (((D) * (256 - (alpha)) + (S) * (alpha)) >> 8)

38 39 40
GST_DEBUG_CATEGORY_STATIC (gst_videomixer_blend_debug);
#define GST_CAT_DEFAULT gst_videomixer_blend_debug

41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 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
/* Below are the implementations of everything */

/* A32 is for AYUV, ARGB and BGRA */
#define BLEND_A32(name, LOOP) \
static void \
blend_##name (const guint8 * src, gint xpos, gint ypos, \
    gint src_width, gint src_height, gdouble src_alpha, \
    guint8 * dest, gint dest_width, gint dest_height) \
{ \
  guint s_alpha; \
  gint src_stride, dest_stride; \
  \
  src_stride = src_width * 4; \
  dest_stride = dest_width * 4; \
  \
  s_alpha = CLAMP ((gint) (src_alpha * 256), 0, 256); \
  \
  /* If it's completely transparent... we just return */ \
  if (G_UNLIKELY (s_alpha == 0)) \
    return; \
  \
  /* adjust src pointers for negative sizes */ \
  if (xpos < 0) { \
    src += -xpos * 4; \
    src_width -= -xpos; \
    xpos = 0; \
  } \
  if (ypos < 0) { \
    src += -ypos * src_stride; \
    src_height -= -ypos; \
    ypos = 0; \
  } \
  /* adjust width/height if the src is bigger than dest */ \
  if (xpos + src_width > dest_width) { \
    src_width = dest_width - xpos; \
  } \
  if (ypos + src_height > dest_height) { \
    src_height = dest_height - ypos; \
  } \
  \
  dest = dest + 4 * xpos + (ypos * dest_stride); \
  \
  LOOP (dest, src, src_height, src_width, src_stride, dest_stride, s_alpha); \
}

86
#define BLEND_A32_LOOP(name) \
87
static inline void \
88 89 90 91 92 93
_blend_loop_##name (guint8 * dest, const guint8 * src, gint src_height, \
    gint src_width, gint src_stride, gint dest_stride, guint s_alpha) \
{ \
  s_alpha = MIN (255, s_alpha); \
  orc_blend_##name (dest, dest_stride, src, src_stride, \
      s_alpha, src_width, src_height); \
94 95
}

96 97 98 99 100 101 102 103 104 105
BLEND_A32_LOOP (argb);
BLEND_A32_LOOP (bgra);

#if G_BYTE_ORDER == LITTLE_ENDIAN
BLEND_A32 (argb, _blend_loop_argb);
BLEND_A32 (bgra, _blend_loop_bgra);
#else
BLEND_A32 (argb, _blend_loop_bgra);
BLEND_A32 (bgra, _blend_loop_argb);
#endif
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121

#define A32_CHECKER_C(name, RGB, A, C1, C2, C3) \
static void \
fill_checker_##name##_c (guint8 * dest, gint width, gint height) \
{ \
  gint i, j; \
  gint val; \
  static const gint tab[] = { 80, 160, 80, 160 }; \
  \
  if (!RGB) { \
    for (i = 0; i < height; i++) { \
      for (j = 0; j < width; j++) { \
        dest[A] = 0xff; \
        dest[C1] = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)]; \
        dest[C2] = 128; \
        dest[C3] = 128; \
122
        dest += 4; \
123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146
      } \
    } \
  } else { \
    for (i = 0; i < height; i++) { \
      for (j = 0; j < width; j++) { \
        val = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)]; \
        dest[A] = 0xFF; \
        dest[C1] = val; \
        dest[C2] = val; \
        dest[C3] = val; \
        dest += 4; \
      } \
    } \
  } \
}

A32_CHECKER_C (argb, TRUE, 0, 1, 2, 3);
A32_CHECKER_C (bgra, TRUE, 3, 2, 1, 0);
A32_CHECKER_C (ayuv, FALSE, 0, 1, 2, 3);

#define YUV_TO_R(Y,U,V) (CLAMP (1.164 * (Y - 16) + 1.596 * (V - 128), 0, 255))
#define YUV_TO_G(Y,U,V) (CLAMP (1.164 * (Y - 16) - 0.813 * (V - 128) - 0.391 * (U - 128), 0, 255))
#define YUV_TO_B(Y,U,V) (CLAMP (1.164 * (Y - 16) + 2.018 * (U - 128), 0, 255))

147
#define A32_COLOR(name, RGB, A, C1, C2, C3) \
148 149 150 151
static void \
fill_color_##name (guint8 * dest, gint width, gint height, gint Y, gint U, gint V) \
{ \
  gint c1, c2, c3; \
152
  guint32 val; \
153 154 155 156 157 158 159 160 161 162
  \
  if (RGB) { \
    c1 = YUV_TO_R (Y, U, V); \
    c2 = YUV_TO_G (Y, U, V); \
    c3 = YUV_TO_B (Y, U, V); \
  } else { \
    c1 = Y; \
    c2 = U; \
    c3 = V; \
  } \
163
  val = GUINT32_FROM_BE ((0xff << A) | (c1 << C1) | (c2 << C2) | (c3 << C3)); \
164
  \
165
  orc_splat_u32 ((guint32 *) dest, val, height * width); \
166 167
}

168 169 170 171 172
A32_COLOR (argb, TRUE, 24, 16, 8, 0);
A32_COLOR (bgra, TRUE, 0, 8, 16, 24);
A32_COLOR (abgr, TRUE, 24, 0, 8, 16);
A32_COLOR (rgba, TRUE, 0, 24, 16, 8);
A32_COLOR (ayuv, FALSE, 24, 16, 8, 0);
173

174
/* Y444, Y42B, I420, YV12, Y41B */
175
#define PLANAR_YUV_BLEND(format_name,format_enum,x_round,y_round,MEMCPY,BLENDLOOP) \
176
inline static void \
177
_blend_##format_name (const guint8 * src, guint8 * dest, \
178
    gint src_stride, gint dest_stride, gint src_width, gint src_height, \
179
    gdouble src_alpha) \
180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202
{ \
  gint i; \
  gint b_alpha; \
  \
  /* If it's completely transparent... we just return */ \
  if (G_UNLIKELY (src_alpha == 0.0)) { \
    GST_INFO ("Fast copy (alpha == 0.0)"); \
    return; \
  } \
  \
  /* If it's completely opaque, we do a fast copy */ \
  if (G_UNLIKELY (src_alpha == 1.0)) { \
    GST_INFO ("Fast copy (alpha == 1.0)"); \
    for (i = 0; i < src_height; i++) { \
      MEMCPY (dest, src, src_width); \
      src += src_stride; \
      dest += dest_stride; \
    } \
    return; \
  } \
  \
  b_alpha = CLAMP ((gint) (src_alpha * 256), 0, 256); \
  \
203
  BLENDLOOP(dest, dest_stride, src, src_stride, b_alpha, src_width, src_height); \
204 205 206
} \
\
static void \
207
blend_##format_name (const guint8 * src, gint xpos, gint ypos, \
208 209 210 211 212 213 214 215 216
    gint src_width, gint src_height, gdouble src_alpha, \
    guint8 * dest, gint dest_width, gint dest_height) \
{ \
  const guint8 *b_src; \
  guint8 *b_dest; \
  gint b_src_width = src_width; \
  gint b_src_height = src_height; \
  gint xoffset = 0; \
  gint yoffset = 0; \
217 218 219 220 221
  gint src_comp_rowstride, dest_comp_rowstride; \
  gint src_comp_height, dest_comp_height; \
  gint src_comp_width, dest_comp_width; \
  gint comp_ypos, comp_xpos; \
  gint comp_yoffset, comp_xoffset; \
222
  \
223 224
  xpos = x_round (xpos); \
  ypos = y_round (ypos); \
225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253
  \
  /* adjust src pointers for negative sizes */ \
  if (xpos < 0) { \
    xoffset = -xpos; \
    b_src_width -= -xpos; \
    xpos = 0; \
  } \
  if (ypos < 0) { \
    yoffset += -ypos; \
    b_src_height -= -ypos; \
    ypos = 0; \
  } \
  /* If x or y offset are larger then the source it's outside of the picture */ \
  if (xoffset > src_width || yoffset > src_width) { \
    return; \
  } \
  \
  /* adjust width/height if the src is bigger than dest */ \
  if (xpos + src_width > dest_width) { \
    b_src_width = dest_width - xpos; \
  } \
  if (ypos + src_height > dest_height) { \
    b_src_height = dest_height - ypos; \
  } \
  if (b_src_width < 0 || b_src_height < 0) { \
    return; \
  } \
  \
  /* First mix Y, then U, then V */ \
254 255 256 257 258 259 260 261 262 263 264 265
  b_src = src + gst_video_format_get_component_offset (format_enum, 0, src_width, src_height); \
  b_dest = dest + gst_video_format_get_component_offset (format_enum, 0, dest_width, dest_height); \
  src_comp_rowstride = gst_video_format_get_row_stride (format_enum, 0, src_width); \
  dest_comp_rowstride = gst_video_format_get_row_stride (format_enum, 0, dest_width); \
  src_comp_height = gst_video_format_get_component_height (format_enum, 0, b_src_height); \
  dest_comp_height = gst_video_format_get_component_height (format_enum, 0, dest_height); \
  src_comp_width = gst_video_format_get_component_width (format_enum, 0, b_src_width); \
  dest_comp_width = gst_video_format_get_component_width (format_enum, 0, dest_width); \
  comp_xpos = (xpos == 0) ? 0 : gst_video_format_get_component_width (format_enum, 0, xpos); \
  comp_ypos = (ypos == 0) ? 0 : gst_video_format_get_component_height (format_enum, 0, ypos); \
  comp_xoffset = (xoffset == 0) ? 0 : gst_video_format_get_component_width (format_enum, 0, xoffset); \
  comp_yoffset = (yoffset == 0) ? 0 : gst_video_format_get_component_height (format_enum, 0, yoffset); \
266
  _blend_##format_name (b_src + comp_xoffset + comp_yoffset * src_comp_rowstride, \
267 268 269
      b_dest + comp_xpos + comp_ypos * dest_comp_rowstride, \
      src_comp_rowstride, \
      dest_comp_rowstride, src_comp_width, src_comp_height, \
270
      src_alpha); \
271 272 273 274 275 276 277 278 279 280 281 282 283
  \
  b_src = src + gst_video_format_get_component_offset (format_enum, 1, src_width, src_height); \
  b_dest = dest + gst_video_format_get_component_offset (format_enum, 1, dest_width, dest_height); \
  src_comp_rowstride = gst_video_format_get_row_stride (format_enum, 1, src_width); \
  dest_comp_rowstride = gst_video_format_get_row_stride (format_enum, 1, dest_width); \
  src_comp_height = gst_video_format_get_component_height (format_enum, 1, b_src_height); \
  dest_comp_height = gst_video_format_get_component_height (format_enum, 1, dest_height); \
  src_comp_width = gst_video_format_get_component_width (format_enum, 1, b_src_width); \
  dest_comp_width = gst_video_format_get_component_width (format_enum, 1, dest_width); \
  comp_xpos = (xpos == 0) ? 0 : gst_video_format_get_component_width (format_enum, 1, xpos); \
  comp_ypos = (ypos == 0) ? 0 : gst_video_format_get_component_height (format_enum, 1, ypos); \
  comp_xoffset = (xoffset == 0) ? 0 : gst_video_format_get_component_width (format_enum, 1, xoffset); \
  comp_yoffset = (yoffset == 0) ? 0 : gst_video_format_get_component_height (format_enum, 1, yoffset); \
284
  _blend_##format_name (b_src + comp_xoffset + comp_yoffset * src_comp_rowstride, \
285 286 287
      b_dest + comp_xpos + comp_ypos * dest_comp_rowstride, \
      src_comp_rowstride, \
      dest_comp_rowstride, src_comp_width, src_comp_height, \
288
      src_alpha); \
289 290 291 292 293 294 295 296 297 298 299 300 301
  \
  b_src = src + gst_video_format_get_component_offset (format_enum, 2, src_width, src_height); \
  b_dest = dest + gst_video_format_get_component_offset (format_enum, 2, dest_width, dest_height); \
  src_comp_rowstride = gst_video_format_get_row_stride (format_enum, 2, src_width); \
  dest_comp_rowstride = gst_video_format_get_row_stride (format_enum, 2, dest_width); \
  src_comp_height = gst_video_format_get_component_height (format_enum, 2, b_src_height); \
  dest_comp_height = gst_video_format_get_component_height (format_enum, 2, dest_height); \
  src_comp_width = gst_video_format_get_component_width (format_enum, 2, b_src_width); \
  dest_comp_width = gst_video_format_get_component_width (format_enum, 2, dest_width); \
  comp_xpos = (xpos == 0) ? 0 : gst_video_format_get_component_width (format_enum, 2, xpos); \
  comp_ypos = (ypos == 0) ? 0 : gst_video_format_get_component_height (format_enum, 2, ypos); \
  comp_xoffset = (xoffset == 0) ? 0 : gst_video_format_get_component_width (format_enum, 2, xoffset); \
  comp_yoffset = (yoffset == 0) ? 0 : gst_video_format_get_component_height (format_enum, 2, yoffset); \
302
  _blend_##format_name (b_src + comp_xoffset + comp_yoffset * src_comp_rowstride, \
303 304 305
      b_dest + comp_xpos + comp_ypos * dest_comp_rowstride, \
      src_comp_rowstride, \
      dest_comp_rowstride, src_comp_width, src_comp_height, \
306
      src_alpha); \
307 308
}

309
#define PLANAR_YUV_FILL_CHECKER(format_name, format_enum, MEMSET) \
310
static void \
311
fill_checker_##format_name (guint8 * dest, gint width, gint height) \
312 313 314
{ \
  gint i, j; \
  static const int tab[] = { 80, 160, 80, 160 }; \
315 316 317
  guint8 *p; \
  gint comp_width, comp_height; \
  gint rowstride; \
318
  \
319 320 321 322 323 324 325
  p = dest + gst_video_format_get_component_offset (format_enum, 0, width, height); \
  comp_width = gst_video_format_get_component_width (format_enum, 0, width); \
  comp_height = gst_video_format_get_component_height (format_enum, 0, height); \
  rowstride = gst_video_format_get_row_stride (format_enum, 0, width); \
  \
  for (i = 0; i < comp_height; i++) { \
    for (j = 0; j < comp_width; j++) { \
326 327
      *p++ = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)]; \
    } \
328 329 330 331 332 333 334 335 336 337 338
    p += rowstride - comp_width; \
  } \
  \
  p = dest + gst_video_format_get_component_offset (format_enum, 1, width, height); \
  comp_width = gst_video_format_get_component_width (format_enum, 1, width); \
  comp_height = gst_video_format_get_component_height (format_enum, 1, height); \
  rowstride = gst_video_format_get_row_stride (format_enum, 1, width); \
  \
  for (i = 0; i < comp_height; i++) { \
    MEMSET (p, 0x80, comp_width); \
    p += rowstride; \
339 340
  } \
  \
341 342 343 344
  p = dest + gst_video_format_get_component_offset (format_enum, 2, width, height); \
  comp_width = gst_video_format_get_component_width (format_enum, 2, width); \
  comp_height = gst_video_format_get_component_height (format_enum, 2, height); \
  rowstride = gst_video_format_get_row_stride (format_enum, 2, width); \
345
  \
346 347 348 349
  for (i = 0; i < comp_height; i++) { \
    MEMSET (p, 0x80, comp_width); \
    p += rowstride; \
  } \
350 351
}

352
#define PLANAR_YUV_FILL_COLOR(format_name,format_enum,MEMSET) \
353
static void \
354
fill_color_##format_name (guint8 * dest, gint width, gint height, \
355 356
    gint colY, gint colU, gint colV) \
{ \
357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375
  guint8 *p; \
  gint comp_width, comp_height; \
  gint rowstride; \
  gint i; \
  \
  p = dest + gst_video_format_get_component_offset (format_enum, 0, width, height); \
  comp_width = gst_video_format_get_component_width (format_enum, 0, width); \
  comp_height = gst_video_format_get_component_height (format_enum, 0, height); \
  rowstride = gst_video_format_get_row_stride (format_enum, 0, width); \
  \
  for (i = 0; i < comp_height; i++) { \
    MEMSET (p, colY, comp_width); \
    p += rowstride; \
  } \
  \
  p = dest + gst_video_format_get_component_offset (format_enum, 1, width, height); \
  comp_width = gst_video_format_get_component_width (format_enum, 1, width); \
  comp_height = gst_video_format_get_component_height (format_enum, 1, height); \
  rowstride = gst_video_format_get_row_stride (format_enum, 1, width); \
376
  \
377 378 379 380
  for (i = 0; i < comp_height; i++) { \
    MEMSET (p, colU, comp_width); \
    p += rowstride; \
  } \
381
  \
382 383 384 385
  p = dest + gst_video_format_get_component_offset (format_enum, 2, width, height); \
  comp_width = gst_video_format_get_component_width (format_enum, 2, width); \
  comp_height = gst_video_format_get_component_height (format_enum, 2, height); \
  rowstride = gst_video_format_get_row_stride (format_enum, 2, width); \
386
  \
387 388 389 390
  for (i = 0; i < comp_height; i++) { \
    MEMSET (p, colV, comp_width); \
    p += rowstride; \
  } \
391 392
}

393 394
#define GST_ROUND_UP_1(x) (x)

395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411
PLANAR_YUV_BLEND (i420, GST_VIDEO_FORMAT_I420, GST_ROUND_UP_2,
    GST_ROUND_UP_2, memcpy, orc_blend_u8);
PLANAR_YUV_FILL_CHECKER (i420, GST_VIDEO_FORMAT_I420, memset);
PLANAR_YUV_FILL_COLOR (i420, GST_VIDEO_FORMAT_I420, memset);
PLANAR_YUV_FILL_COLOR (yv12, GST_VIDEO_FORMAT_YV12, memset);
PLANAR_YUV_BLEND (y444, GST_VIDEO_FORMAT_Y444, GST_ROUND_UP_1,
    GST_ROUND_UP_1, memcpy, orc_blend_u8);
PLANAR_YUV_FILL_CHECKER (y444, GST_VIDEO_FORMAT_Y444, memset);
PLANAR_YUV_FILL_COLOR (y444, GST_VIDEO_FORMAT_Y444, memset);
PLANAR_YUV_BLEND (y42b, GST_VIDEO_FORMAT_Y42B, GST_ROUND_UP_2,
    GST_ROUND_UP_1, memcpy, orc_blend_u8);
PLANAR_YUV_FILL_CHECKER (y42b, GST_VIDEO_FORMAT_Y42B, memset);
PLANAR_YUV_FILL_COLOR (y42b, GST_VIDEO_FORMAT_Y42B, memset);
PLANAR_YUV_BLEND (y41b, GST_VIDEO_FORMAT_Y41B, GST_ROUND_UP_4,
    GST_ROUND_UP_1, memcpy, orc_blend_u8);
PLANAR_YUV_FILL_CHECKER (y41b, GST_VIDEO_FORMAT_Y41B, memset);
PLANAR_YUV_FILL_COLOR (y41b, GST_VIDEO_FORMAT_Y41B, memset);
412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466

/* RGB, BGR, xRGB, xBGR, RGBx, BGRx */

#define RGB_BLEND(name, bpp, MEMCPY, BLENDLOOP) \
static void \
blend_##name (const guint8 * src, gint xpos, gint ypos, \
    gint src_width, gint src_height, gdouble src_alpha, \
    guint8 * dest, gint dest_width, gint dest_height) \
{ \
  gint b_alpha; \
  gint i; \
  gint src_stride, dest_stride; \
  \
  src_stride = GST_ROUND_UP_4 (src_width * bpp); \
  dest_stride = GST_ROUND_UP_4 (dest_width * bpp); \
  \
  b_alpha = CLAMP ((gint) (src_alpha * 256), 0, 256); \
  \
  /* adjust src pointers for negative sizes */ \
  if (xpos < 0) { \
    src += -xpos * bpp; \
    src_width -= -xpos; \
    xpos = 0; \
  } \
  if (ypos < 0) { \
    src += -ypos * src_stride; \
    src_height -= -ypos; \
    ypos = 0; \
  } \
  /* adjust width/height if the src is bigger than dest */ \
  if (xpos + src_width > dest_width) { \
    src_width = dest_width - xpos; \
  } \
  if (ypos + src_height > dest_height) { \
    src_height = dest_height - ypos; \
  } \
  \
  dest = dest + bpp * xpos + (ypos * dest_stride); \
  /* If it's completely transparent... we just return */ \
  if (G_UNLIKELY (src_alpha == 0.0)) { \
    GST_INFO ("Fast copy (alpha == 0.0)"); \
    return; \
  } \
  \
  /* If it's completely opaque, we do a fast copy */ \
  if (G_UNLIKELY (src_alpha == 1.0)) { \
    GST_INFO ("Fast copy (alpha == 1.0)"); \
    for (i = 0; i < src_height; i++) { \
      MEMCPY (dest, src, bpp * src_width); \
      src += src_stride; \
      dest += dest_stride; \
    } \
    return; \
  } \
  \
467
  BLENDLOOP(dest, dest_stride, src, src_stride, b_alpha, src_width * bpp, src_height); \
468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497
}

#define RGB_FILL_CHECKER_C(name, bpp, r, g, b) \
static void \
fill_checker_##name##_c (guint8 * dest, gint width, gint height) \
{ \
  gint i, j; \
  static const int tab[] = { 80, 160, 80, 160 }; \
  gint dest_add = GST_ROUND_UP_4 (width * bpp) - width * bpp; \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      dest[r] = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)];       /* red */ \
      dest[g] = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)];       /* green */ \
      dest[b] = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)];       /* blue */ \
      dest += bpp; \
    } \
    dest += dest_add; \
  } \
}

#define RGB_FILL_COLOR(name, bpp, MEMSET_RGB) \
static void \
fill_color_##name (guint8 * dest, gint width, gint height, \
    gint colY, gint colU, gint colV) \
{ \
  gint red, green, blue; \
  gint i; \
  gint dest_stride = GST_ROUND_UP_4 (width * bpp); \
  \
498 499 500
  red = YUV_TO_R (colY, colU, colV); \
  green = YUV_TO_G (colY, colU, colV); \
  blue = YUV_TO_B (colY, colU, colV); \
501 502 503 504 505 506 507
  \
  for (i = 0; i < height; i++) { \
    MEMSET_RGB (dest, red, green, blue, width); \
    dest += dest_stride; \
  } \
}

508
#define MEMSET_RGB_C(name, r, g, b) \
509 510 511 512 513 514 515 516
static inline void \
_memset_##name##_c (guint8* dest, gint red, gint green, gint blue, gint width) { \
  gint j; \
  \
  for (j = 0; j < width; j++) { \
    dest[r] = red; \
    dest[g] = green; \
    dest[b] = blue; \
517
    dest += 3; \
518 519 520
  } \
}

521 522 523 524 525 526 527 528 529 530 531 532
#define MEMSET_XRGB(name, r, g, b) \
static inline void \
_memset_##name (guint8* dest, gint red, gint green, gint blue, gint width) { \
  guint32 val; \
  \
  val = GUINT32_FROM_BE ((red << r) | (green << g) | (blue << b)); \
  orc_splat_u32 ((guint32 *) dest, val, width); \
}

#define _orc_memcpy_u32(dest,src,len) orc_memcpy_u32((guint32 *) dest, (const guint32 *) src, len/4)

RGB_BLEND (rgb, 3, memcpy, orc_blend_u8);
533
RGB_FILL_CHECKER_C (rgb, 3, 0, 1, 2);
534
MEMSET_RGB_C (rgb, 0, 1, 2);
535 536
RGB_FILL_COLOR (rgb_c, 3, _memset_rgb_c);

537
MEMSET_RGB_C (bgr, 2, 1, 0);
538 539
RGB_FILL_COLOR (bgr_c, 3, _memset_bgr_c);

540
RGB_BLEND (xrgb, 4, _orc_memcpy_u32, orc_blend_u8);
541
RGB_FILL_CHECKER_C (xrgb, 4, 1, 2, 3);
542 543
MEMSET_XRGB (xrgb, 24, 16, 0);
RGB_FILL_COLOR (xrgb, 4, _memset_xrgb);
544

545 546
MEMSET_XRGB (xbgr, 0, 16, 24);
RGB_FILL_COLOR (xbgr, 4, _memset_xbgr);
547

548 549
MEMSET_XRGB (rgbx, 24, 16, 8);
RGB_FILL_COLOR (rgbx, 4, _memset_rgbx);
550

551 552
MEMSET_XRGB (bgrx, 8, 16, 24);
RGB_FILL_COLOR (bgrx, 4, _memset_bgrx);
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
/* YUY2, YVYU, UYVY */

#define PACKED_422_BLEND(name, MEMCPY, BLENDLOOP) \
static void \
blend_##name (const guint8 * src, gint xpos, gint ypos, \
    gint src_width, gint src_height, gdouble src_alpha, \
    guint8 * dest, gint dest_width, gint dest_height) \
{ \
  gint b_alpha; \
  gint i; \
  gint src_stride, dest_stride; \
  \
  src_stride = GST_ROUND_UP_4 (src_width * 2); \
  dest_stride = GST_ROUND_UP_4 (dest_width * 2); \
  \
  b_alpha = CLAMP ((gint) (src_alpha * 256), 0, 256); \
  \
  xpos = GST_ROUND_UP_2 (xpos); \
  \
  /* adjust src pointers for negative sizes */ \
  if (xpos < 0) { \
    src += -xpos * 2; \
    src_width -= -xpos; \
    xpos = 0; \
  } \
  if (ypos < 0) { \
    src += -ypos * src_stride; \
    src_height -= -ypos; \
    ypos = 0; \
  } \
  \
  /* adjust width/height if the src is bigger than dest */ \
  if (xpos + src_width > dest_width) { \
    src_width = dest_width - xpos; \
  } \
  if (ypos + src_height > dest_height) { \
    src_height = dest_height - ypos; \
  } \
  \
  dest = dest + 2 * xpos + (ypos * dest_stride); \
  /* If it's completely transparent... we just return */ \
  if (G_UNLIKELY (src_alpha == 0.0)) { \
    GST_INFO ("Fast copy (alpha == 0.0)"); \
    return; \
  } \
  \
  /* If it's completely opaque, we do a fast copy */ \
  if (G_UNLIKELY (src_alpha == 1.0)) { \
    GST_INFO ("Fast copy (alpha == 1.0)"); \
    for (i = 0; i < src_height; i++) { \
      MEMCPY (dest, src, 2 * src_width); \
      src += src_stride; \
      dest += dest_stride; \
    } \
    return; \
  } \
  \
611
  BLENDLOOP(dest, dest_stride, src, src_stride, b_alpha, 2 * src_width, src_height); \
612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642
}

#define PACKED_422_FILL_CHECKER_C(name, Y1, U, Y2, V) \
static void \
fill_checker_##name##_c (guint8 * dest, gint width, gint height) \
{ \
  gint i, j; \
  static const int tab[] = { 80, 160, 80, 160 }; \
  gint dest_add; \
  \
  width = GST_ROUND_UP_2 (width); \
  dest_add = GST_ROUND_UP_4 (width * 2) - width * 2; \
  width /= 2; \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      dest[Y1] = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)]; \
      dest[Y2] = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)]; \
      dest[U] = 128; \
      dest[V] = 128; \
      dest += 4; \
    } \
    dest += dest_add; \
  } \
}

#define PACKED_422_FILL_COLOR(name, Y1, U, Y2, V) \
static void \
fill_color_##name (guint8 * dest, gint width, gint height, \
    gint colY, gint colU, gint colV) \
{ \
643 644 645
  gint i; \
  gint dest_stride; \
  guint32 val; \
646 647
  \
  width = GST_ROUND_UP_2 (width); \
648
  dest_stride = GST_ROUND_UP_4 (width * 2); \
649 650
  width /= 2; \
  \
651 652
  val = GUINT32_FROM_BE ((colY << Y1) | (colY << Y2) | (colU << U) | (colV << V)); \
  \
653
  for (i = 0; i < height; i++) { \
654 655
    orc_splat_u32 ((guint32 *) dest, val, width); \
    dest += dest_stride; \
656 657 658
  } \
}

659
PACKED_422_BLEND (yuy2, memcpy, orc_blend_u8);
660 661
PACKED_422_FILL_CHECKER_C (yuy2, 0, 1, 2, 3);
PACKED_422_FILL_CHECKER_C (uyvy, 1, 0, 3, 2);
662 663 664
PACKED_422_FILL_COLOR (yuy2, 24, 16, 8, 0);
PACKED_422_FILL_COLOR (yvyu, 24, 0, 8, 16);
PACKED_422_FILL_COLOR (uyvy, 16, 24, 0, 8);
665

666 667 668
/* Init function */
BlendFunction gst_video_mixer_blend_argb;
BlendFunction gst_video_mixer_blend_bgra;
669
/* AYUV/ABGR is equal to ARGB, RGBA is equal to BGRA */
670 671
BlendFunction gst_video_mixer_blend_y444;
BlendFunction gst_video_mixer_blend_y42b;
672
BlendFunction gst_video_mixer_blend_i420;
673 674
/* I420 is equal to YV12 */
BlendFunction gst_video_mixer_blend_y41b;
675 676 677 678
BlendFunction gst_video_mixer_blend_rgb;
/* BGR is equal to RGB */
BlendFunction gst_video_mixer_blend_rgbx;
/* BGRx, xRGB, xBGR are equal to RGBx */
679 680
BlendFunction gst_video_mixer_blend_yuy2;
/* YVYU and UYVY are equal to YUY2 */
681 682 683

FillCheckerFunction gst_video_mixer_fill_checker_argb;
FillCheckerFunction gst_video_mixer_fill_checker_bgra;
684
/* ABGR is equal to ARGB, RGBA is equal to BGRA */
685
FillCheckerFunction gst_video_mixer_fill_checker_ayuv;
686 687
FillCheckerFunction gst_video_mixer_fill_checker_y444;
FillCheckerFunction gst_video_mixer_fill_checker_y42b;
688
FillCheckerFunction gst_video_mixer_fill_checker_i420;
689 690
/* I420 is equal to YV12 */
FillCheckerFunction gst_video_mixer_fill_checker_y41b;
691 692 693 694
FillCheckerFunction gst_video_mixer_fill_checker_rgb;
/* BGR is equal to RGB */
FillCheckerFunction gst_video_mixer_fill_checker_xrgb;
/* BGRx, xRGB, xBGR are equal to RGBx */
695 696 697
FillCheckerFunction gst_video_mixer_fill_checker_yuy2;
/* YVYU is equal to YUY2 */
FillCheckerFunction gst_video_mixer_fill_checker_uyvy;
698 699 700

FillColorFunction gst_video_mixer_fill_color_argb;
FillColorFunction gst_video_mixer_fill_color_bgra;
701 702
FillColorFunction gst_video_mixer_fill_color_abgr;
FillColorFunction gst_video_mixer_fill_color_rgba;
703
FillColorFunction gst_video_mixer_fill_color_ayuv;
704 705
FillColorFunction gst_video_mixer_fill_color_y444;
FillColorFunction gst_video_mixer_fill_color_y42b;
706
FillColorFunction gst_video_mixer_fill_color_i420;
707 708
FillColorFunction gst_video_mixer_fill_color_yv12;
FillColorFunction gst_video_mixer_fill_color_y41b;
709 710 711 712 713 714
FillColorFunction gst_video_mixer_fill_color_rgb;
FillColorFunction gst_video_mixer_fill_color_bgr;
FillColorFunction gst_video_mixer_fill_color_xrgb;
FillColorFunction gst_video_mixer_fill_color_xbgr;
FillColorFunction gst_video_mixer_fill_color_rgbx;
FillColorFunction gst_video_mixer_fill_color_bgrx;
715 716 717
FillColorFunction gst_video_mixer_fill_color_yuy2;
FillColorFunction gst_video_mixer_fill_color_yvyu;
FillColorFunction gst_video_mixer_fill_color_uyvy;
718 719 720 721

void
gst_video_mixer_init_blend (void)
{
722 723 724
  GST_DEBUG_CATEGORY_INIT (gst_videomixer_blend_debug, "videomixer_blend", 0,
      "video mixer blending functions");

725 726
  gst_video_mixer_blend_argb = blend_argb;
  gst_video_mixer_blend_bgra = blend_bgra;
727 728 729 730 731 732 733
  gst_video_mixer_blend_i420 = blend_i420;
  gst_video_mixer_blend_y444 = blend_y444;
  gst_video_mixer_blend_y42b = blend_y42b;
  gst_video_mixer_blend_y41b = blend_y41b;
  gst_video_mixer_blend_rgb = blend_rgb;
  gst_video_mixer_blend_xrgb = blend_xrgb;
  gst_video_mixer_blend_yuy2 = blend_yuy2;
734 735 736 737

  gst_video_mixer_fill_checker_argb = fill_checker_argb_c;
  gst_video_mixer_fill_checker_bgra = fill_checker_bgra_c;
  gst_video_mixer_fill_checker_ayuv = fill_checker_ayuv_c;
738 739 740 741
  gst_video_mixer_fill_checker_i420 = fill_checker_i420;
  gst_video_mixer_fill_checker_y444 = fill_checker_y444;
  gst_video_mixer_fill_checker_y42b = fill_checker_y42b;
  gst_video_mixer_fill_checker_y41b = fill_checker_y41b;
742 743
  gst_video_mixer_fill_checker_rgb = fill_checker_rgb_c;
  gst_video_mixer_fill_checker_xrgb = fill_checker_xrgb_c;
744 745
  gst_video_mixer_fill_checker_yuy2 = fill_checker_yuy2_c;
  gst_video_mixer_fill_checker_uyvy = fill_checker_uyvy_c;
746

747 748 749 750 751 752 753 754 755 756
  gst_video_mixer_fill_color_argb = fill_color_argb;
  gst_video_mixer_fill_color_bgra = fill_color_bgra;
  gst_video_mixer_fill_color_abgr = fill_color_abgr;
  gst_video_mixer_fill_color_rgba = fill_color_rgba;
  gst_video_mixer_fill_color_ayuv = fill_color_ayuv;
  gst_video_mixer_fill_color_i420 = fill_color_i420;
  gst_video_mixer_fill_color_yv12 = fill_color_yv12;
  gst_video_mixer_fill_color_y444 = fill_color_y444;
  gst_video_mixer_fill_color_y42b = fill_color_y42b;
  gst_video_mixer_fill_color_y41b = fill_color_y41b;
757 758
  gst_video_mixer_fill_color_rgb = fill_color_rgb_c;
  gst_video_mixer_fill_color_bgr = fill_color_bgr_c;
759 760 761 762 763 764 765
  gst_video_mixer_fill_color_xrgb = fill_color_xrgb;
  gst_video_mixer_fill_color_xbgr = fill_color_xbgr;
  gst_video_mixer_fill_color_rgbx = fill_color_rgbx;
  gst_video_mixer_fill_color_bgrx = fill_color_bgrx;
  gst_video_mixer_fill_color_yuy2 = fill_color_yuy2;
  gst_video_mixer_fill_color_yvyu = fill_color_yvyu;
  gst_video_mixer_fill_color_uyvy = fill_color_uyvy;
766
}