blend.c 32.7 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 30 31 32 33 34 35 36
/* 
 * 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"

#include <liboil/liboil.h>
#include <liboil/liboilcpu.h>
#include <liboil/liboilfunction.h>

#include <string.h>

37 38
#include <gst/video/video.h>

39 40
#define BLEND(D,S,alpha) (((D) * (256 - (alpha)) + (S) * (alpha)) >> 8)

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 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
#ifdef HAVE_GCC_ASM
#if defined(HAVE_CPU_I386) || defined(HAVE_CPU_X86_64)
#define BUILD_X86_ASM

#define GENERIC
#include "blend_mmx.h"
#undef GENERIC
#endif
#endif

/* Below are the implementations of everything */

inline static void
_blend_u8_c (guint8 * dest, const guint8 * src,
    gint src_stride, gint dest_stride, gint src_width, gint src_height,
    gint dest_width, gint b_alpha)
{
  gint i, j;
  gint src_add = src_stride - src_width;
  gint dest_add = dest_stride - dest_width;

  for (i = 0; i < src_height; i++) {
    for (j = 0; j < src_width; j++) {
      *dest = BLEND (*dest, *src, b_alpha);
      dest++;
      src++;
    }
    src += src_add;
    dest += dest_add;
  }
}

/* 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); \
}

#define BLEND_A32_LOOP_C(name, A, C1, C2, C3) \
static inline void \
_blend_loop_##name##_c (guint8 *dest, const guint8 *src, gint src_height, gint src_width, gint src_stride, gint dest_stride, guint s_alpha) { \
  gint i, j; \
  gint alpha; \
  gint src_add = src_stride - (4 * src_width); \
  gint dest_add = dest_stride - (4 * src_width); \
  \
  for (i = 0; i < src_height; i++) { \
    for (j = 0; j < src_width; j++) { \
      alpha = (src[A] * s_alpha) >> 8; \
      dest[A] = 0xff; \
      dest[C1] = BLEND(dest[C1], src[C1], alpha); \
      dest[C2] = BLEND(dest[C2], src[C2], alpha); \
      dest[C3] = BLEND(dest[C3], src[C3], alpha); \
      \
      src += 4; \
      dest += 4; \
    } \
    src += src_add; \
    dest += dest_add; \
  } \
}

BLEND_A32_LOOP_C (argb, 0, 1, 2, 3);
BLEND_A32_LOOP_C (bgra, 3, 2, 1, 0);
BLEND_A32 (argb_c, _blend_loop_argb_c);
BLEND_A32 (bgra_c, _blend_loop_bgra_c);

#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; \
160
        dest += 4; \
161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213
      } \
    } \
  } 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))

#define A32_COLOR(name, RGB, LOOP) \
static void \
fill_color_##name (guint8 * dest, gint width, gint height, gint Y, gint U, gint V) \
{ \
  gint c1, c2, c3; \
  \
  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; \
  } \
  LOOP (dest, height, width, c1, c2, c3); \
}

#define A32_COLOR_LOOP_C(name, A, C1, C2, C3) \
static inline void \
_fill_color_loop_##name##_c (guint8 *dest, gint height, gint width, gint c1, gint c2, gint c3) { \
  gint i, j; \
  \
  for (i = 0; i < height; i++) { \
    for (j = 0; j < width; j++) { \
      dest[A] = 0xff; \
      dest[C1] = c1; \
      dest[C2] = c2; \
      dest[C3] = c3; \
214
      dest += 4; \
215 216 217 218 219 220
    } \
  } \
}

A32_COLOR_LOOP_C (ac1c2c3, 0, 1, 2, 3);
A32_COLOR_LOOP_C (c3c2c1a, 3, 2, 1, 0);
221 222
A32_COLOR_LOOP_C (ac3c2c1, 0, 3, 2, 1);
A32_COLOR_LOOP_C (c1c2c3a, 1, 2, 3, 0);
223 224
A32_COLOR (argb_c, TRUE, _fill_color_loop_ac1c2c3_c);
A32_COLOR (bgra_c, TRUE, _fill_color_loop_c3c2c1a_c);
225 226
A32_COLOR (abgr_c, TRUE, _fill_color_loop_ac3c2c1_c);
A32_COLOR (rgba_c, TRUE, _fill_color_loop_c1c2c3a_c);
227 228
A32_COLOR (ayuv_c, FALSE, _fill_color_loop_ac1c2c3_c);

229 230
/* Y444, Y42B, I420, YV12, Y41B */
#define PLANAR_YUV_BLEND(name,format_name,format_enum,x_round,y_round,MEMCPY,BLENDLOOP) \
231
inline static void \
232
_blend_##format_name##_##name (const guint8 * src, guint8 * dest, \
233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261
    gint src_stride, gint dest_stride, gint src_width, gint src_height, \
    gint dest_width, gdouble src_alpha) \
{ \
  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); \
  \
  BLENDLOOP(dest, src, src_stride, dest_stride, src_width, src_height, dest_width, b_alpha); \
} \
\
static void \
262
blend_##format_name##_##name (const guint8 * src, gint xpos, gint ypos, \
263 264 265 266 267 268 269 270 271
    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; \
272 273 274 275 276
  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; \
277
  \
278 279
  xpos = x_round (xpos); \
  ypos = y_round (ypos); \
280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308
  \
  /* 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 */ \
309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361
  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); \
  _blend_##format_name##_##name (b_src + comp_xoffset + comp_yoffset * src_comp_rowstride, \
      b_dest + comp_xpos + comp_ypos * dest_comp_rowstride, \
      src_comp_rowstride, \
      dest_comp_rowstride, src_comp_width, src_comp_height, \
      dest_comp_width, src_alpha); \
  \
  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); \
  _blend_##format_name##_##name (b_src + comp_xoffset + comp_yoffset * src_comp_rowstride, \
      b_dest + comp_xpos + comp_ypos * dest_comp_rowstride, \
      src_comp_rowstride, \
      dest_comp_rowstride, src_comp_width, src_comp_height, \
      dest_comp_width, src_alpha); \
  \
  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); \
  _blend_##format_name##_##name (b_src + comp_xoffset + comp_yoffset * src_comp_rowstride, \
      b_dest + comp_xpos + comp_ypos * dest_comp_rowstride, \
      src_comp_rowstride, \
      dest_comp_rowstride, src_comp_width, src_comp_height, \
      dest_comp_width, src_alpha); \
362 363
}

364
#define PLANAR_YUV_FILL_CHECKER(name, format_name, format_enum, MEMSET) \
365
static void \
366
fill_checker_##format_name##_##name (guint8 * dest, gint width, gint height) \
367 368 369
{ \
  gint i, j; \
  static const int tab[] = { 80, 160, 80, 160 }; \
370 371 372
  guint8 *p; \
  gint comp_width, comp_height; \
  gint rowstride; \
373
  \
374 375 376 377 378 379 380
  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++) { \
381 382
      *p++ = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)]; \
    } \
383 384 385 386 387 388 389 390 391 392 393
    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; \
394 395
  } \
  \
396 397 398 399
  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); \
400
  \
401 402 403 404
  for (i = 0; i < comp_height; i++) { \
    MEMSET (p, 0x80, comp_width); \
    p += rowstride; \
  } \
405 406
}

407
#define PLANAR_YUV_FILL_COLOR(name,format_name,format_enum,MEMSET) \
408
static void \
409
fill_color_##format_name##_##name (guint8 * dest, gint width, gint height, \
410 411
    gint colY, gint colU, gint colV) \
{ \
412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430
  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); \
431
  \
432 433 434 435
  for (i = 0; i < comp_height; i++) { \
    MEMSET (p, colU, comp_width); \
    p += rowstride; \
  } \
436
  \
437 438 439 440
  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); \
441
  \
442 443 444 445
  for (i = 0; i < comp_height; i++) { \
    MEMSET (p, colV, comp_width); \
    p += rowstride; \
  } \
446 447
}

448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466
#define GST_ROUND_UP_1(x) (x)

PLANAR_YUV_BLEND (c, i420, GST_VIDEO_FORMAT_I420, GST_ROUND_UP_2,
    GST_ROUND_UP_2, memcpy, _blend_u8_c);
PLANAR_YUV_FILL_CHECKER (c, i420, GST_VIDEO_FORMAT_I420, memset);
PLANAR_YUV_FILL_COLOR (c, i420, GST_VIDEO_FORMAT_I420, memset);
PLANAR_YUV_FILL_COLOR (c, yv12, GST_VIDEO_FORMAT_YV12, memset);
PLANAR_YUV_BLEND (c, y444, GST_VIDEO_FORMAT_Y444, GST_ROUND_UP_1,
    GST_ROUND_UP_1, memcpy, _blend_u8_c);
PLANAR_YUV_FILL_CHECKER (c, y444, GST_VIDEO_FORMAT_Y444, memset);
PLANAR_YUV_FILL_COLOR (c, y444, GST_VIDEO_FORMAT_Y444, memset);
PLANAR_YUV_BLEND (c, y42b, GST_VIDEO_FORMAT_Y42B, GST_ROUND_UP_2,
    GST_ROUND_UP_1, memcpy, _blend_u8_c);
PLANAR_YUV_FILL_CHECKER (c, y42b, GST_VIDEO_FORMAT_Y42B, memset);
PLANAR_YUV_FILL_COLOR (c, y42b, GST_VIDEO_FORMAT_Y42B, memset);
PLANAR_YUV_BLEND (c, y41b, GST_VIDEO_FORMAT_Y41B, GST_ROUND_UP_4,
    GST_ROUND_UP_1, memcpy, _blend_u8_c);
PLANAR_YUV_FILL_CHECKER (c, y41b, GST_VIDEO_FORMAT_Y41B, memset);
PLANAR_YUV_FILL_COLOR (c, y41b, GST_VIDEO_FORMAT_Y41B, memset);
467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552

/* 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; \
  } \
  \
  BLENDLOOP(dest, src, src_stride, dest_stride, bpp * src_width, src_height, bpp * dest_width, b_alpha); \
}

#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); \
  \
553 554 555
  red = YUV_TO_R (colY, colU, colV); \
  green = YUV_TO_G (colY, colU, colV); \
  blue = YUV_TO_B (colY, colU, colV); \
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
  \
  for (i = 0; i < height; i++) { \
    MEMSET_RGB (dest, red, green, blue, width); \
    dest += dest_stride; \
  } \
}

#define MEMSET_RGB_C(name, bpp, r, g, b) \
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; \
    dest += bpp; \
  } \
}

RGB_BLEND (rgb_c, 3, memcpy, _blend_u8_c);
RGB_FILL_CHECKER_C (rgb, 3, 0, 1, 2);
MEMSET_RGB_C (rgb, 3, 0, 1, 2);
RGB_FILL_COLOR (rgb_c, 3, _memset_rgb_c);

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

RGB_BLEND (xrgb_c, 4, memcpy, _blend_u8_c);
RGB_FILL_CHECKER_C (xrgb, 4, 1, 2, 3);
MEMSET_RGB_C (xrgb, 4, 1, 2, 3);
RGB_FILL_COLOR (xrgb_c, 4, _memset_xrgb_c);

MEMSET_RGB_C (xbgr, 4, 3, 2, 1);
RGB_FILL_COLOR (xbgr_c, 4, _memset_xbgr_c);

MEMSET_RGB_C (rgbx, 4, 0, 1, 2);
RGB_FILL_COLOR (rgbx_c, 4, _memset_rgbx_c);

MEMSET_RGB_C (bgrx, 4, 2, 1, 0);
RGB_FILL_COLOR (bgrx_c, 4, _memset_bgrx_c);

598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712
/* 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; \
  } \
  \
  BLENDLOOP(dest, src, src_stride, dest_stride, 2 * src_width, src_height, 2 * dest_width, b_alpha); \
}

#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) \
{ \
  gint i, j; \
  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] = colY; \
      dest[Y2] = colY; \
      dest[U] = colU; \
      dest[V] = colV; \
      dest += 4; \
    } \
    dest += dest_add; \
  } \
}

PACKED_422_BLEND (yuy2_c, memcpy, _blend_u8_c);
PACKED_422_FILL_CHECKER_C (yuy2, 0, 1, 2, 3);
PACKED_422_FILL_CHECKER_C (uyvy, 1, 0, 3, 2);
PACKED_422_FILL_COLOR (yuy2_c, 0, 1, 2, 3);
PACKED_422_FILL_COLOR (yvyu_c, 0, 3, 2, 1);
PACKED_422_FILL_COLOR (uyvy_c, 1, 0, 3, 2);

713 714
/* MMX Implementations */
#ifdef BUILD_X86_ASM
715 716 717 718 719 720 721 722 723

#define MEMSET_xRGB_MMX(name, r, g, b) \
static inline void \
_memset_##name##_mmx (guint8* dest, gint red, gint green, gint blue, gint width) { \
  guint32 val = (red << r) | (green << g) | (blue << b); \
  \
  _memset_u32_mmx ((guint32 *) dest, val, width); \
}

724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740
#define A32
#define NAME_BLEND _blend_loop_argb_mmx
#define A_OFF 0
#include "blend_mmx.h"
#undef NAME_BLEND
#undef A_OFF

#define NAME_BLEND _blend_loop_bgra_mmx
#define A_OFF 24
#include "blend_mmx.h"
#undef NAME_BLEND
#undef A_OFF
#undef A32

BLEND_A32 (argb_mmx, _blend_loop_argb_mmx);
BLEND_A32 (bgra_mmx, _blend_loop_bgra_mmx);

741 742 743 744 745 746 747 748
#define A32_COLOR_LOOP_MMX(name, A, C1, C2, C3) \
static inline void \
_fill_color_loop_##name##_mmx (guint8 *dest, gint height, gint width, gint c1, gint c2, gint c3) { \
  guint32 val = (0xff << A) | (c1 << C1) | (c2 << C2) | (c3 << C3); \
  \
  _memset_u32_mmx ((guint32 *) dest, val, height*width); \
}

749 750 751 752
A32_COLOR_LOOP_MMX (argb, 0, 8, 16, 24);
A32_COLOR_LOOP_MMX (abgr, 0, 24, 16, 8);
A32_COLOR_LOOP_MMX (rgba, 24, 0, 8, 16);
A32_COLOR_LOOP_MMX (bgra, 24, 16, 8, 0);
753

754 755
A32_COLOR (argb_mmx, TRUE, _fill_color_loop_argb_mmx);
A32_COLOR (bgra_mmx, TRUE, _fill_color_loop_bgra_mmx);
756 757
A32_COLOR (abgr_mmx, TRUE, _fill_color_loop_abgr_mmx);
A32_COLOR (rgba_mmx, TRUE, _fill_color_loop_rgba_mmx);
758
A32_COLOR (ayuv_mmx, FALSE, _fill_color_loop_argb_mmx);
759

760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776
PLANAR_YUV_BLEND (mmx, i420, GST_VIDEO_FORMAT_I420, GST_ROUND_UP_2,
    GST_ROUND_UP_2, _memcpy_u8_mmx, _blend_u8_mmx);
PLANAR_YUV_FILL_CHECKER (mmx, i420, GST_VIDEO_FORMAT_I420, _memset_u8_mmx);
PLANAR_YUV_FILL_COLOR (mmx, i420, GST_VIDEO_FORMAT_I420, _memset_u8_mmx);
PLANAR_YUV_FILL_COLOR (mmx, yv12, GST_VIDEO_FORMAT_YV12, _memset_u8_mmx);
PLANAR_YUV_BLEND (mmx, y444, GST_VIDEO_FORMAT_Y444, GST_ROUND_UP_1,
    GST_ROUND_UP_1, _memcpy_u8_mmx, _blend_u8_mmx);
PLANAR_YUV_FILL_CHECKER (mmx, y444, GST_VIDEO_FORMAT_Y444, _memset_u8_mmx);
PLANAR_YUV_FILL_COLOR (mmx, y444, GST_VIDEO_FORMAT_Y444, _memset_u8_mmx);
PLANAR_YUV_BLEND (mmx, y42b, GST_VIDEO_FORMAT_Y42B, GST_ROUND_UP_2,
    GST_ROUND_UP_1, _memcpy_u8_mmx, _blend_u8_mmx);
PLANAR_YUV_FILL_CHECKER (mmx, y42b, GST_VIDEO_FORMAT_Y42B, _memset_u8_mmx);
PLANAR_YUV_FILL_COLOR (mmx, y42b, GST_VIDEO_FORMAT_Y42B, _memset_u8_mmx);
PLANAR_YUV_BLEND (mmx, y41b, GST_VIDEO_FORMAT_Y41B, GST_ROUND_UP_4,
    GST_ROUND_UP_1, _memcpy_u8_mmx, _blend_u8_mmx);
PLANAR_YUV_FILL_CHECKER (mmx, y41b, GST_VIDEO_FORMAT_Y41B, _memset_u8_mmx);
PLANAR_YUV_FILL_COLOR (mmx, y41b, GST_VIDEO_FORMAT_Y41B, _memset_u8_mmx);
777 778 779 780 781 782 783 784 785 786 787 788 789 790 791

RGB_BLEND (rgb_mmx, 3, _memcpy_u8_mmx, _blend_u8_mmx);

RGB_BLEND (xrgb_mmx, 4, _memcpy_u8_mmx, _blend_u8_mmx);
MEMSET_xRGB_MMX (xrgb, 16, 8, 0);
RGB_FILL_COLOR (xrgb_mmx, 4, _memset_xrgb_mmx);

MEMSET_xRGB_MMX (xbgr, 0, 8, 16);
RGB_FILL_COLOR (xbgr_mmx, 4, _memset_xbgr_mmx);

MEMSET_xRGB_MMX (rgbx, 24, 16, 8);
RGB_FILL_COLOR (rgbx_mmx, 4, _memset_rgbx_mmx);

MEMSET_xRGB_MMX (bgrx, 8, 16, 24);
RGB_FILL_COLOR (bgrx_mmx, 4, _memset_bgrx_mmx);
792 793

PACKED_422_BLEND (yuy2_mmx, _memcpy_u8_mmx, _blend_u8_mmx);
794 795 796 797 798
#endif

/* Init function */
BlendFunction gst_video_mixer_blend_argb;
BlendFunction gst_video_mixer_blend_bgra;
799
/* AYUV/ABGR is equal to ARGB, RGBA is equal to BGRA */
800 801
BlendFunction gst_video_mixer_blend_y444;
BlendFunction gst_video_mixer_blend_y42b;
802
BlendFunction gst_video_mixer_blend_i420;
803 804
/* I420 is equal to YV12 */
BlendFunction gst_video_mixer_blend_y41b;
805 806 807 808
BlendFunction gst_video_mixer_blend_rgb;
/* BGR is equal to RGB */
BlendFunction gst_video_mixer_blend_rgbx;
/* BGRx, xRGB, xBGR are equal to RGBx */
809 810
BlendFunction gst_video_mixer_blend_yuy2;
/* YVYU and UYVY are equal to YUY2 */
811 812 813

FillCheckerFunction gst_video_mixer_fill_checker_argb;
FillCheckerFunction gst_video_mixer_fill_checker_bgra;
814
/* ABGR is equal to ARGB, RGBA is equal to BGRA */
815
FillCheckerFunction gst_video_mixer_fill_checker_ayuv;
816 817
FillCheckerFunction gst_video_mixer_fill_checker_y444;
FillCheckerFunction gst_video_mixer_fill_checker_y42b;
818
FillCheckerFunction gst_video_mixer_fill_checker_i420;
819 820
/* I420 is equal to YV12 */
FillCheckerFunction gst_video_mixer_fill_checker_y41b;
821 822 823 824
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 */
825 826 827
FillCheckerFunction gst_video_mixer_fill_checker_yuy2;
/* YVYU is equal to YUY2 */
FillCheckerFunction gst_video_mixer_fill_checker_uyvy;
828 829 830

FillColorFunction gst_video_mixer_fill_color_argb;
FillColorFunction gst_video_mixer_fill_color_bgra;
831 832
FillColorFunction gst_video_mixer_fill_color_abgr;
FillColorFunction gst_video_mixer_fill_color_rgba;
833
FillColorFunction gst_video_mixer_fill_color_ayuv;
834 835
FillColorFunction gst_video_mixer_fill_color_y444;
FillColorFunction gst_video_mixer_fill_color_y42b;
836
FillColorFunction gst_video_mixer_fill_color_i420;
837 838
FillColorFunction gst_video_mixer_fill_color_yv12;
FillColorFunction gst_video_mixer_fill_color_y41b;
839 840 841 842 843 844
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;
845 846 847
FillColorFunction gst_video_mixer_fill_color_yuy2;
FillColorFunction gst_video_mixer_fill_color_yvyu;
FillColorFunction gst_video_mixer_fill_color_uyvy;
848 849 850 851 852 853 854 855 856 857 858 859

void
gst_video_mixer_init_blend (void)
{
  guint cpu_flags;

  oil_init ();
  cpu_flags = oil_cpu_get_flags ();

  gst_video_mixer_blend_argb = blend_argb_c;
  gst_video_mixer_blend_bgra = blend_bgra_c;
  gst_video_mixer_blend_i420 = blend_i420_c;
860 861 862
  gst_video_mixer_blend_y444 = blend_y444_c;
  gst_video_mixer_blend_y42b = blend_y42b_c;
  gst_video_mixer_blend_y41b = blend_y41b_c;
863 864
  gst_video_mixer_blend_rgb = blend_rgb_c;
  gst_video_mixer_blend_xrgb = blend_xrgb_c;
865
  gst_video_mixer_blend_yuy2 = blend_yuy2_c;
866 867 868 869 870

  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;
  gst_video_mixer_fill_checker_i420 = fill_checker_i420_c;
871 872 873
  gst_video_mixer_fill_checker_y444 = fill_checker_y444_c;
  gst_video_mixer_fill_checker_y42b = fill_checker_y42b_c;
  gst_video_mixer_fill_checker_y41b = fill_checker_y41b_c;
874 875
  gst_video_mixer_fill_checker_rgb = fill_checker_rgb_c;
  gst_video_mixer_fill_checker_xrgb = fill_checker_xrgb_c;
876 877
  gst_video_mixer_fill_checker_yuy2 = fill_checker_yuy2_c;
  gst_video_mixer_fill_checker_uyvy = fill_checker_uyvy_c;
878 879 880

  gst_video_mixer_fill_color_argb = fill_color_argb_c;
  gst_video_mixer_fill_color_bgra = fill_color_bgra_c;
881 882
  gst_video_mixer_fill_color_abgr = fill_color_abgr_c;
  gst_video_mixer_fill_color_rgba = fill_color_rgba_c;
883 884
  gst_video_mixer_fill_color_ayuv = fill_color_ayuv_c;
  gst_video_mixer_fill_color_i420 = fill_color_i420_c;
885 886 887 888
  gst_video_mixer_fill_color_yv12 = fill_color_yv12_c;
  gst_video_mixer_fill_color_y444 = fill_color_y444_c;
  gst_video_mixer_fill_color_y42b = fill_color_y42b_c;
  gst_video_mixer_fill_color_y41b = fill_color_y41b_c;
889 890 891 892 893 894
  gst_video_mixer_fill_color_rgb = fill_color_rgb_c;
  gst_video_mixer_fill_color_bgr = fill_color_bgr_c;
  gst_video_mixer_fill_color_xrgb = fill_color_xrgb_c;
  gst_video_mixer_fill_color_xbgr = fill_color_xbgr_c;
  gst_video_mixer_fill_color_rgbx = fill_color_rgbx_c;
  gst_video_mixer_fill_color_bgrx = fill_color_bgrx_c;
895 896 897
  gst_video_mixer_fill_color_yuy2 = fill_color_yuy2_c;
  gst_video_mixer_fill_color_yvyu = fill_color_yvyu_c;
  gst_video_mixer_fill_color_uyvy = fill_color_uyvy_c;
898 899 900 901 902

#ifdef BUILD_X86_ASM
  if (cpu_flags & OIL_IMPL_FLAG_MMX) {
    gst_video_mixer_blend_argb = blend_argb_mmx;
    gst_video_mixer_blend_bgra = blend_bgra_mmx;
903
    gst_video_mixer_blend_i420 = blend_i420_mmx;
904 905 906
    gst_video_mixer_blend_y444 = blend_y444_mmx;
    gst_video_mixer_blend_y42b = blend_y42b_mmx;
    gst_video_mixer_blend_y41b = blend_y41b_mmx;
907 908
    gst_video_mixer_blend_rgb = blend_rgb_mmx;
    gst_video_mixer_blend_xrgb = blend_xrgb_mmx;
909
    gst_video_mixer_blend_yuy2 = blend_yuy2_mmx;
910 911

    gst_video_mixer_fill_checker_i420 = fill_checker_i420_mmx;
912 913 914
    gst_video_mixer_fill_checker_y444 = fill_checker_y444_mmx;
    gst_video_mixer_fill_checker_y42b = fill_checker_y42b_mmx;
    gst_video_mixer_fill_checker_y41b = fill_checker_y41b_mmx;
915 916 917

    gst_video_mixer_fill_color_argb = fill_color_argb_mmx;
    gst_video_mixer_fill_color_bgra = fill_color_bgra_mmx;
918 919
    gst_video_mixer_fill_color_abgr = fill_color_abgr_mmx;
    gst_video_mixer_fill_color_rgba = fill_color_rgba_mmx;
920
    gst_video_mixer_fill_color_ayuv = fill_color_ayuv_mmx;
921
    gst_video_mixer_fill_color_i420 = fill_color_i420_mmx;
922 923 924 925
    gst_video_mixer_fill_color_yv12 = fill_color_yv12_mmx;
    gst_video_mixer_fill_color_y444 = fill_color_y444_mmx;
    gst_video_mixer_fill_color_y42b = fill_color_y42b_mmx;
    gst_video_mixer_fill_color_y41b = fill_color_y41b_mmx;
926 927 928 929
    gst_video_mixer_fill_color_xrgb = fill_color_xrgb_mmx;
    gst_video_mixer_fill_color_xbgr = fill_color_xbgr_mmx;
    gst_video_mixer_fill_color_rgbx = fill_color_rgbx_mmx;
    gst_video_mixer_fill_color_bgrx = fill_color_bgrx_mmx;
930 931 932
  }
#endif
}