src/tdm_helper.c

   1 /**************************************************************************
   2  *
   3  * libtdm
   4  *
   5  * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
   6  *
   7  * Contact: Eunchul Kim <chulspro.kim@samsung.com>,
   8  *          JinYoung Jeon <jy0.jeon@samsung.com>,
   9  *          Taeheon Kim <th908.kim@samsung.com>,
  10  *          YoungJun Cho <yj44.cho@samsung.com>,
  11  *          SooChan Lim <sc1.lim@samsung.com>,
  12  *          Boram Park <sc1.lim@samsung.com>
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a
  15  * copy of this software and associated documentation files (the
  16  * "Software"), to deal in the Software without restriction, including
  17  * without limitation the rights to use, copy, modify, merge, publish,
  18  * distribute, sub license, and/or sell copies of the Software, and to
  19  * permit persons to whom the Software is furnished to do so, subject to
  20  * the following conditions:
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  27  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  29  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  30  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  31  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  32  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33  *
  34 **************************************************************************/
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include "config.h"
  38 #endif
  39
  40 #include <png.h>
  41 #include <string.h>
  42 #include <tbm_surface.h>
  43 #include <tbm_surface_internal.h>
  44 #include <string.h>
  45 #include <time.h>
  46 #include <pixman.h>
  47
  48 #include "tdm.h"
  49 #include "tdm_private.h"
  50 #include "tdm_helper.h"
  51
  52 #define PNG_DEPTH 8
  53
  54 static const char *file_exts[2] = {"png", "yuv"};
  55
  56 int tdm_dump_enable;
  57 char *tdm_debug_dump_dir;
  58
  59 EXTERN double
  60 tdm_helper_get_time(void)
  61 {
  62         struct timespec tp;
  63
  64         if (clock_gettime(CLOCK_MONOTONIC, &tp) == 0)
  65                 return (double)tp.tv_sec + ((double)tp.tv_nsec) / 1000000000.0;
  66
  67         return 0;
  68 }
  69
  70 static void
  71 _tdm_helper_dump_raw(const char *file, void *data1, int size1, void *data2,
  72                                          int size2, void *data3, int size3)
  73 {
  74         unsigned int *blocks;
  75         FILE *fp = fopen(file, "w+");
  76         TDM_RETURN_IF_FAIL(fp != NULL);
  77
  78         blocks = (unsigned int *)data1;
  79         fwrite(blocks, 1, size1, fp);
  80
  81         if (size2 > 0) {
  82                 blocks = (unsigned int *)data2;
  83                 fwrite(blocks, 1, size2, fp);
  84         }
  85
  86         if (size3 > 0) {
  87                 blocks = (unsigned int *)data3;
  88                 fwrite(blocks, 1, size3, fp);
  89         }
  90
  91         fclose(fp);
  92 }
  93
  94 static void
  95 _tdm_helper_dump_png(const char *file, const void *data, int width,
  96                                          int height)
  97 {
  98         FILE *fp = fopen(file, "wb");
  99         TDM_RETURN_IF_FAIL(fp != NULL);
 100
 101         png_structp pPngStruct =
 102                 png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
 103         if (!pPngStruct) {
 104                 fclose(fp);
 105                 return;
 106         }
 107
 108         png_infop pPngInfo = png_create_info_struct(pPngStruct);
 109         if (!pPngInfo) {
 110                 png_destroy_write_struct(&pPngStruct, NULL);
 111                 fclose(fp);
 112                 return;
 113         }
 114
 115         png_init_io(pPngStruct, fp);
 116         png_set_IHDR(pPngStruct,
 117                                  pPngInfo,
 118                                  width,
 119                                  height,
 120                                  PNG_DEPTH,
 121                                  PNG_COLOR_TYPE_RGBA,
 122                                  PNG_INTERLACE_NONE,
 123                                  PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
 124
 125         png_set_bgr(pPngStruct);
 126         png_write_info(pPngStruct, pPngInfo);
 127
 128         const int pixel_size = 4;       // RGBA
 129         png_bytep *row_pointers =
 130                 png_malloc(pPngStruct, height * sizeof(png_byte *));
 131         if (!row_pointers) {
 132                 png_destroy_write_struct(&pPngStruct, &pPngInfo);
 133                 fclose(fp);
 134                 return;
 135         }
 136
 137         unsigned int *blocks = (unsigned int *)data;
 138         int y = 0;
 139         int x = 0;
 140
 141         for (; y < height; ++y) {
 142                 png_bytep row =
 143                         png_malloc(pPngStruct, sizeof(png_byte) * width * pixel_size);
 144                 if (!row) {
 145                         for (x = 0; x < y; x++)
 146                                 png_free(pPngStruct, row_pointers[x]);
 147                         png_free(pPngStruct, row_pointers);
 148                         png_destroy_write_struct(&pPngStruct, &pPngInfo);
 149                         fclose(fp);
 150                         return;
 151                 }
 152
 153                 row_pointers[y] = (png_bytep)row;
 154                 for (x = 0; x < width; ++x) {
 155                         unsigned int curBlock = blocks[y * width + x];
 156                         row[x * pixel_size] = (curBlock & 0xFF);
 157                         row[1 + x * pixel_size] = (curBlock >> 8) & 0xFF;
 158                         row[2 + x * pixel_size] = (curBlock >> 16) & 0xFF;
 159                         row[3 + x * pixel_size] = (curBlock >> 24) & 0xFF;
 160                 }
 161         }
 162
 163         png_write_image(pPngStruct, row_pointers);
 164         png_write_end(pPngStruct, pPngInfo);
 165
 166         for (y = 0; y < height; y++)
 167                 png_free(pPngStruct, row_pointers[y]);
 168         png_free(pPngStruct, row_pointers);
 169
 170         png_destroy_write_struct(&pPngStruct, &pPngInfo);
 171
 172         fclose(fp);
 173 }
 174
 175 INTERN char *
 176 tdm_helper_dump_make_directory(const char *path, char *reply, int *len)
 177 {
 178         char *fullpath = NULL;
 179         time_t timer;
 180         struct tm *t, *buf = NULL;
 181
 182         timer = time(NULL);
 183
 184         buf = calloc(1, sizeof(struct tm));
 185         TDM_GOTO_IF_FAIL(buf != NULL, failed_make);
 186
 187         fullpath = calloc(1, TDM_PATH_LEN * sizeof(char));
 188         TDM_GOTO_IF_FAIL(fullpath != NULL, failed_make);
 189
 190         t = localtime_r(&timer, buf);
 191         TDM_GOTO_IF_FAIL(t != NULL, failed_make);
 192
 193         snprintf(fullpath, TDM_PATH_LEN, "%s/dump_%04d%02d%02d.%02d%02d%02d", path,
 194                          t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
 195
 196         if ((mkdir(fullpath, 0755)) < 0) {
 197                 TDM_ERR("mkdir '%s' fail\n", fullpath);
 198                 TDM_SNPRINTF(reply, len, "mkdir '%s' fail\n", fullpath);
 199                 goto failed_make;
 200         }
 201
 202         free(buf);
 203
 204         return fullpath;
 205 failed_make:
 206         if (fullpath)
 207                 free(fullpath);
 208         if (buf)
 209                 free(buf);
 210         return NULL;
 211 }
 212
 213 INTERN void
 214 tdm_helper_dump_buffer_str(tbm_surface_h buffer, char *dir, char *str)
 215 {
 216         tbm_surface_info_s info;
 217         const char *ext;
 218         char file[TDM_PATH_LEN];
 219         int ret, bw;
 220
 221         TDM_RETURN_IF_FAIL(buffer != NULL);
 222         TDM_RETURN_IF_FAIL(dir != NULL);
 223         TDM_RETURN_IF_FAIL(str != NULL);
 224
 225         ret = tbm_surface_get_info(buffer, &info);
 226         TDM_RETURN_IF_FAIL(ret == TBM_SURFACE_ERROR_NONE);
 227
 228         if (info.format == TBM_FORMAT_ARGB8888 || info.format == TBM_FORMAT_XRGB8888) {
 229                 ext = file_exts[0];
 230                 bw = info.planes[0].stride >> 2;
 231         } else {
 232                 ext = file_exts[1];
 233                 bw = info.planes[0].stride;
 234         }
 235
 236         snprintf(file, TDM_PATH_LEN, "%s/%c%c%c%c_%dx%d_%s.%s",
 237                          dir, FOURCC_STR(info.format), bw, info.height, str, ext);
 238
 239         tdm_helper_dump_buffer(buffer, file);
 240 }
 241
 242 EXTERN void
 243 tdm_helper_dump_buffer(tbm_surface_h buffer, const char *file)
 244 {
 245         tbm_surface_info_s info;
 246         int len, ret;
 247         const char *ext;
 248         int bo_cnt;
 249
 250         TDM_RETURN_IF_FAIL(buffer != NULL);
 251         TDM_RETURN_IF_FAIL(file != NULL);
 252
 253         ret = tbm_surface_map(buffer, TBM_OPTION_READ, &info);
 254         TDM_RETURN_IF_FAIL(ret == TBM_SURFACE_ERROR_NONE);
 255
 256         len = strnlen(file, 1024);
 257         if (info.format == TBM_FORMAT_ARGB8888 || info.format == TBM_FORMAT_XRGB8888)
 258                 ext = file_exts[0];
 259         else
 260                 ext = file_exts[1];
 261
 262         if (strncmp(file + (len - 3), ext, 3)) {
 263                 TDM_ERR("can't dump to '%s' file", file + (len - 3));
 264                 tbm_surface_unmap(buffer);
 265                 return;
 266         }
 267
 268         bo_cnt = tbm_surface_internal_get_num_bos(buffer);
 269         TDM_DBG("buffer: bo_cnt(%d) %dx%d %c%c%c%c, plane: (%p+%d, %d,%d) (%p+%d, %d,%d) (%p+%d, %d,%d)",
 270                         bo_cnt, info.width, info.height, FOURCC_STR(info.format),
 271                         info.planes[0].ptr, info.planes[0].offset, info.planes[0].stride, info.planes[0].size,
 272                         info.planes[1].ptr, info.planes[1].offset, info.planes[1].stride, info.planes[1].size,
 273                         info.planes[2].ptr, info.planes[2].offset, info.planes[2].stride, info.planes[2].size);
 274
 275         switch (info.format) {
 276         case TBM_FORMAT_ARGB8888:
 277         case TBM_FORMAT_XRGB8888:
 278                 _tdm_helper_dump_png(file, info.planes[0].ptr,
 279                                                          info.planes[0].stride >> 2, info.height);
 280                 break;
 281         case TBM_FORMAT_YVU420:
 282         case TBM_FORMAT_YUV420:
 283                 _tdm_helper_dump_raw(file,
 284                                                          info.planes[0].ptr,
 285                                                          info.planes[0].stride * info.height,
 286                                                          info.planes[1].ptr,
 287                                                          info.planes[1].stride * (info.height >> 1),
 288                                                          info.planes[2].ptr,
 289                                                          info.planes[2].stride * (info.height >> 1));
 290                 break;
 291         case TBM_FORMAT_NV12:
 292         case TBM_FORMAT_NV21:
 293                 if (bo_cnt == 1 &&
 294                         (info.planes[0].ptr + info.planes[0].stride * info.height) != info.planes[1].ptr)
 295                         TDM_WRN("%p != %p", info.planes[0].ptr + info.planes[0].stride * info.height, info.planes[1].ptr);
 296
 297                 _tdm_helper_dump_raw(file,
 298                                                          info.planes[0].ptr,
 299                                                          info.planes[0].stride * info.height,
 300                                                          info.planes[1].ptr,
 301                                                          info.planes[1].stride * (info.height >> 1), NULL,
 302                                                          0);
 303                 break;
 304         case TBM_FORMAT_YUYV:
 305         case TBM_FORMAT_UYVY:
 306                 _tdm_helper_dump_raw(file,
 307                                                          info.planes[0].ptr,
 308                                                          info.planes[0].stride * info.height, NULL, 0,
 309                                                          NULL, 0);
 310                 break;
 311         default:
 312                 TDM_ERR("can't dump %c%c%c%c buffer", FOURCC_STR(info.format));
 313                 tbm_surface_unmap(buffer);
 314                 return;
 315         }
 316
 317         tbm_surface_unmap(buffer);
 318
 319         TDM_INFO("dump %s", file);
 320 }
 321
 322 void
 323 tdm_helper_clear_buffer_pos(tbm_surface_h buffer, tdm_pos *pos)
 324 {
 325         tbm_surface_info_s info;
 326         int ret;
 327
 328         TDM_RETURN_IF_FAIL(buffer != NULL);
 329
 330         ret = tbm_surface_map(buffer, TBM_OPTION_READ, &info);
 331         TDM_RETURN_IF_FAIL(ret == TBM_SURFACE_ERROR_NONE);
 332
 333         switch (info.format) {
 334         case TBM_FORMAT_ARGB8888:
 335         case TBM_FORMAT_XRGB8888:
 336                 if (!pos) {
 337                         memset(info.planes[0].ptr, 0, info.planes[0].stride * info.height);
 338                 } else {
 339                         unsigned char *p;
 340                         int x, y;
 341                         for (y = pos->y; y <= (pos->y + pos->h); y++) {
 342                                 p = info.planes[0].ptr + info.planes[0].stride * y;
 343                                 for (x = pos->x; x <= (pos->x + pos->w); x++) {
 344                                         int *ibuf = (int*)p;
 345                                         ibuf[x] = 0x00000000;
 346                                 }
 347                         }
 348                 }
 349                 break;
 350         case TBM_FORMAT_YVU420:
 351         case TBM_FORMAT_YUV420:
 352                 memset((char*)info.planes[0].ptr, 0x10, info.planes[0].stride * info.height);
 353                 memset((char*)info.planes[1].ptr, 0x80, info.planes[1].stride * (info.height >> 1));
 354                 memset((char*)info.planes[2].ptr, 0x80, info.planes[2].stride * (info.height >> 1));
 355                 break;
 356         case TBM_FORMAT_NV12:
 357         case TBM_FORMAT_NV21:
 358                 memset((char*)info.planes[0].ptr, 0x10, info.planes[0].stride * info.height);
 359                 memset((char*)info.planes[1].ptr, 0x80, info.planes[1].stride * (info.height >> 1));
 360                 break;
 361         case TBM_FORMAT_YUYV: {
 362                 int *ibuf = (int*)info.planes[0].ptr;
 363                 int i, size = info.planes[0].stride * info.height / 4;
 364
 365                 for (i = 0 ; i < size ; i++)
 366                         ibuf[i] = 0x10801080;
 367         }
 368         break;
 369         case TBM_FORMAT_UYVY: {
 370                 int *ibuf = (int*)info.planes[0].ptr;
 371                 int i, size = info.planes[0].stride * info.height / 4;
 372
 373                 for (i = 0 ; i < size ; i++)
 374                         ibuf[i] = 0x80108010; /* YUYV -> 0xVYUY */
 375         }
 376         break;
 377         default:
 378                 TDM_ERR("can't clear %c%c%c%c buffer", FOURCC_STR(info.format));
 379                 break;
 380         }
 381
 382         tbm_surface_unmap(buffer);
 383 }
 384
 385 EXTERN void
 386 tdm_helper_clear_buffer(tbm_surface_h buffer)
 387 {
 388         TDM_RETURN_IF_FAIL(buffer != NULL);
 389
 390         tdm_helper_clear_buffer_pos(buffer, NULL);
 391 }
 392
 393 static pixman_format_code_t
 394 _tdm_helper_pixman_format_get(tbm_format format)
 395 {
 396         switch (format) {
 397         case TBM_FORMAT_ARGB8888:
 398                 return PIXMAN_a8r8g8b8;
 399         case TBM_FORMAT_XRGB8888:
 400                 return PIXMAN_x8r8g8b8;
 401         default:
 402                 return 0;
 403         }
 404
 405         return 0;
 406 }
 407
 408 EXTERN tdm_error
 409 tdm_helper_convert_buffer(tbm_surface_h srcbuf, tbm_surface_h dstbuf,
 410                                                   tdm_pos *srcpos, tdm_pos *dstpos,
 411                                                   tdm_transform transform, int over)
 412 {
 413         tbm_surface_info_s src_info, dst_info;
 414         pixman_image_t *src_img = NULL, *dst_img = NULL;
 415         pixman_format_code_t src_format, dst_format;
 416         double scale_x, scale_y;
 417         int rotate_step, bos;
 418         pixman_transform_t t;
 419         struct pixman_f_transform ft;
 420         pixman_op_t op;
 421         int src_stride, dst_stride;
 422         int buf_width, err;
 423         tdm_error ret = TDM_ERROR_OPERATION_FAILED;
 424
 425         TDM_RETURN_VAL_IF_FAIL(srcbuf != NULL, TDM_ERROR_INVALID_PARAMETER);
 426         TDM_RETURN_VAL_IF_FAIL(dstbuf != NULL, TDM_ERROR_INVALID_PARAMETER);
 427
 428         bos = tbm_surface_internal_get_num_bos(srcbuf);
 429         TDM_RETURN_VAL_IF_FAIL(bos == 1, TDM_ERROR_OPERATION_FAILED);
 430
 431         bos = tbm_surface_internal_get_num_bos(dstbuf);
 432         TDM_RETURN_VAL_IF_FAIL(bos == 1, TDM_ERROR_OPERATION_FAILED);
 433
 434         err = tbm_surface_map(srcbuf, TBM_OPTION_READ, &src_info);
 435         TDM_RETURN_VAL_IF_FAIL(err == TBM_SURFACE_ERROR_NONE, TDM_ERROR_OPERATION_FAILED);
 436
 437         err = tbm_surface_map(dstbuf, TBM_OPTION_WRITE, &dst_info);
 438         TDM_GOTO_IF_FAIL(err == TBM_SURFACE_ERROR_NONE, unmap_srcbuf);
 439
 440         /* not handle buffers which have 2 more gem handles */
 441         TDM_GOTO_IF_FAIL(src_info.planes[0].ptr != NULL, unmap_dstbuf);
 442         TDM_GOTO_IF_FAIL(dst_info.planes[0].ptr != NULL, unmap_dstbuf);
 443
 444         src_format = _tdm_helper_pixman_format_get(src_info.format);
 445         TDM_GOTO_IF_FAIL(src_format > 0, unmap_dstbuf);
 446         dst_format = _tdm_helper_pixman_format_get(dst_info.format);
 447         TDM_GOTO_IF_FAIL(dst_format > 0, unmap_dstbuf);
 448
 449         buf_width = src_info.planes[0].stride >> 2;
 450         src_stride = src_info.planes[0].stride;
 451         src_img = pixman_image_create_bits(src_format, buf_width, src_info.height,
 452                                                                            (uint32_t*)src_info.planes[0].ptr, src_stride);
 453         TDM_GOTO_IF_FAIL(src_img, unref_img);
 454
 455         buf_width = dst_info.planes[0].stride >> 2;
 456         dst_stride = dst_info.planes[0].stride;
 457         dst_img = pixman_image_create_bits(dst_format, buf_width, dst_info.height,
 458                                                                            (uint32_t*)dst_info.planes[0].ptr, dst_stride);
 459         TDM_GOTO_IF_FAIL(dst_img, unref_img);
 460
 461         pixman_f_transform_init_identity(&ft);
 462
 463         if (transform & TDM_TRANSFORM_FLIPPED) {
 464                 pixman_f_transform_scale(&ft, NULL, -1, 1);
 465                 pixman_f_transform_translate(&ft, NULL, dstpos->w, 0);
 466         }
 467
 468         rotate_step = transform & 0x3;
 469         if (rotate_step > 0) {
 470                 int c, s, tx = 0, ty = 0;
 471                 switch (rotate_step) {
 472                 case 1:
 473                         c = 0, s = -1, tx = -dstpos->w;
 474                         break;
 475                 case 2:
 476                         c = -1, s = 0, tx = -dstpos->w, ty = -dstpos->h;
 477                         break;
 478                 case 3:
 479                         c = 0, s = 1, ty = -dstpos->h;
 480                         break;
 481                 }
 482                 pixman_f_transform_translate(&ft, NULL, tx, ty);
 483                 pixman_f_transform_rotate(&ft, NULL, c, s);
 484         }
 485
 486         if (rotate_step % 2 == 0) {
 487                 scale_x = (double)srcpos->w / dstpos->w;
 488                 scale_y = (double)srcpos->h / dstpos->h;
 489         } else {
 490                 scale_x = (double)srcpos->w / dstpos->h;
 491                 scale_y = (double)srcpos->h / dstpos->w;
 492         }
 493
 494         pixman_f_transform_scale(&ft, NULL, scale_x, scale_y);
 495         pixman_f_transform_translate(&ft, NULL, srcpos->x, srcpos->y);
 496         pixman_transform_from_pixman_f_transform(&t, &ft);
 497         pixman_image_set_transform(src_img, &t);
 498
 499         op = (!over) ? PIXMAN_OP_SRC : PIXMAN_OP_OVER;
 500
 501         pixman_image_composite(op, src_img, NULL, dst_img, 0, 0, 0, 0,
 502                                                    dstpos->x, dstpos->y, dstpos->w, dstpos->h);
 503
 504         ret = TDM_ERROR_NONE;
 505
 506 unref_img:
 507         if (src_img)
 508                 pixman_image_unref(src_img);
 509         if (dst_img)
 510                 pixman_image_unref(dst_img);
 511 unmap_dstbuf:
 512         tbm_surface_unmap(dstbuf);
 513 unmap_srcbuf:
 514         tbm_surface_unmap(srcbuf);
 515
 516         return ret;
 517 }
 518
 519 EXTERN int
 520 tdm_helper_get_fd(const char *env)
 521 {
 522         const char *value;
 523         int fd, newfd, flags, ret;
 524         char *end;
 525         errno = 0;
 526
 527         value = (const char*)getenv(env);
 528         if (!value)
 529                 return -1;
 530
 531         const long sl = strtol(value, &end, 10);
 532         if (end == value) {
 533                 TDM_ERR("%s: not a decimal number\n", value);
 534                 return -1;
 535         } else if (*end != '\0') {
 536                 TDM_ERR("%s: extra characters at end of input: %s\n", value, end);
 537                 return -1;
 538         } else if ((sl == LONG_MIN || sl == LONG_MAX) && errno == ERANGE) {
 539                 TDM_ERR("%s out of range of type long\n", value);
 540                 return -1;
 541         } else if (sl > INT_MAX) {
 542                 TDM_ERR("%ld greater than INT_MAX\n", sl);
 543                 return -1;
 544         } else if (sl < INT_MIN) {
 545                 TDM_ERR("%ld less than INT_MIN\n", sl);
 546                 return -1;
 547         } else {
 548                 fd = (int)sl;
 549                 if (fd < 0) {
 550                         TDM_ERR("%d out of fd range\n", fd);
 551                         return -1;
 552                 }
 553         }
 554
 555         flags = fcntl(fd, F_GETFD);
 556         if (flags == -1) {
 557                 TDM_ERR("fcntl failed: %m");
 558                 return -1;
 559         }
 560
 561         newfd = dup(fd);
 562         if (newfd < 0) {
 563                 TDM_ERR("dup failed: %m");
 564                 return -1;
 565         }
 566
 567         TDM_INFO("%s: fd(%d) newfd(%d)", env, fd, newfd);
 568
 569         ret = fcntl(newfd, F_SETFD, flags | FD_CLOEXEC);
 570         if (ret == -1) {
 571                 TDM_ERR("fcntl failed: %m");
 572                 close(newfd);
 573                 return -1;
 574         }
 575
 576         return newfd;
 577 }
 578
 579 EXTERN void
 580 tdm_helper_set_fd(const char *env, int fd)
 581 {
 582         char buf[32];
 583         int ret;
 584
 585         snprintf(buf, sizeof(buf), "%d", fd);
 586
 587         ret = setenv(env, (const char*)buf, 1);
 588         if (ret) {
 589                 TDM_ERR("setenv failed: %m");
 590                 return;
 591         }
 592
 593         if (fd >= 0)
 594                 TDM_INFO("%s: fd(%d)", env, fd);
 595 }
 596
 597 EXTERN void
 598 tdm_helper_dump_start(char *dumppath, int *count)
 599 {
 600         if (dumppath == NULL || count == NULL) {
 601                 TDM_DBG("tdm_helper_dump dumppath or count is null.");
 602                 return;
 603         }
 604
 605         tdm_dump_enable = 1;
 606
 607         TDM_DBG("tdm_helper_dump start.(path : %s)", dumppath);
 608 }
 609
 610 EXTERN void
 611 tdm_helper_dump_stop(void)
 612 {
 613         tdm_dump_enable = 0;
 614
 615         TDM_DBG("tdm_helper_dump stop.");
 616 }
 617
 618 static tdm_error
 619 _tdm_helper_buffer_convert(tbm_surface_h srcbuf, tbm_surface_h dstbuf,
 620                                                    int dx, int dy, int dw, int dh, int count)
 621 {
 622         pixman_image_t *src_img = NULL, *dst_img = NULL;
 623         pixman_format_code_t src_format, dst_format;
 624         pixman_transform_t t;
 625         struct pixman_f_transform ft;
 626         pixman_op_t op;
 627         tbm_surface_info_s src_info = {0, };
 628         tbm_surface_info_s dst_info = {0, };
 629         int stride, width;
 630         double scale_x, scale_y;
 631
 632         TDM_RETURN_VAL_IF_FAIL(srcbuf != NULL, TDM_ERROR_INVALID_PARAMETER);
 633         TDM_RETURN_VAL_IF_FAIL(dstbuf != NULL, TDM_ERROR_INVALID_PARAMETER);
 634
 635         if (tbm_surface_map(srcbuf, TBM_SURF_OPTION_READ, &src_info) != TBM_SURFACE_ERROR_NONE) {
 636                 TDM_ERR("cannot mmap srcbuf\n");
 637                 return TDM_ERROR_OPERATION_FAILED;
 638         }
 639
 640         if (tbm_surface_map(dstbuf, TBM_SURF_OPTION_WRITE, &dst_info) != TBM_SURFACE_ERROR_NONE) {
 641                 TDM_ERR("cannot mmap dstbuf\n");
 642                 tbm_surface_unmap(srcbuf);
 643                 return TDM_ERROR_OPERATION_FAILED;
 644         }
 645         TDM_GOTO_IF_FAIL(src_info.num_planes == 1, cant_convert);
 646         TDM_GOTO_IF_FAIL(dst_info.num_planes == 1, cant_convert);
 647
 648         /* src */
 649         src_format = _tdm_helper_pixman_format_get(src_info.format);
 650         TDM_GOTO_IF_FAIL(src_format > 0, cant_convert);
 651
 652         width = src_info.planes[0].stride / 4;
 653         stride = src_info.planes[0].stride;
 654         src_img = pixman_image_create_bits(src_format, width, src_info.height,
 655                                                                            (uint32_t*)src_info.planes[0].ptr, stride);
 656         TDM_GOTO_IF_FAIL(src_img != NULL, cant_convert);
 657
 658         /* dst */
 659         dst_format = _tdm_helper_pixman_format_get(dst_info.format);
 660         TDM_GOTO_IF_FAIL(dst_format > 0, cant_convert);
 661
 662         width = dst_info.planes[0].stride / 4;
 663         stride = dst_info.planes[0].stride;
 664         dst_img = pixman_image_create_bits(dst_format, width, dst_info.height,
 665                                                                            (uint32_t*)dst_info.planes[0].ptr, stride);
 666         TDM_GOTO_IF_FAIL(dst_img != NULL, cant_convert);
 667
 668         pixman_f_transform_init_identity(&ft);
 669
 670         scale_x = (double)src_info.width / dw;
 671         scale_y = (double)src_info.height / dh;
 672
 673         pixman_f_transform_scale(&ft, NULL, scale_x, scale_y);
 674         pixman_f_transform_translate(&ft, NULL, 0, 0);
 675         pixman_transform_from_pixman_f_transform(&t, &ft);
 676         pixman_image_set_transform(src_img, &t);
 677
 678         if (count == 0)
 679                 op = PIXMAN_OP_SRC;
 680         else
 681                 op = PIXMAN_OP_OVER;
 682
 683         pixman_image_composite(op, src_img, NULL, dst_img,
 684                                                    0, 0, 0, 0, dx, dy, dw, dh);
 685
 686         if (src_img)
 687                 pixman_image_unref(src_img);
 688         if (dst_img)
 689                 pixman_image_unref(dst_img);
 690
 691         tbm_surface_unmap(srcbuf);
 692         tbm_surface_unmap(dstbuf);
 693
 694         return TDM_ERROR_NONE;
 695
 696 cant_convert:
 697         if (src_img)
 698                 pixman_image_unref(src_img);
 699
 700         tbm_surface_unmap(srcbuf);
 701         tbm_surface_unmap(dstbuf);
 702
 703         return TDM_ERROR_OPERATION_FAILED;
 704 }
 705
 706 EXTERN tdm_error
 707 tdm_helper_capture_output(tdm_output *output, tbm_surface_h dst_buffer,
 708                                                   int x, int y, int w, int h,
 709                                                   tdm_helper_capture_handler func, void *data)
 710 {
 711         tbm_surface_h surface;
 712         tdm_error err;
 713         int i, count, first = 0;
 714
 715         TDM_RETURN_VAL_IF_FAIL(output != NULL, TDM_ERROR_INVALID_PARAMETER);
 716         TDM_RETURN_VAL_IF_FAIL(dst_buffer != NULL, TDM_ERROR_INVALID_PARAMETER);
 717         TDM_RETURN_VAL_IF_FAIL(x >= 0, TDM_ERROR_INVALID_PARAMETER);
 718         TDM_RETURN_VAL_IF_FAIL(y >= 0, TDM_ERROR_INVALID_PARAMETER);
 719         TDM_RETURN_VAL_IF_FAIL(w >= 0, TDM_ERROR_INVALID_PARAMETER);
 720         TDM_RETURN_VAL_IF_FAIL(h >= 0, TDM_ERROR_INVALID_PARAMETER);
 721         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
 722         TDM_RETURN_VAL_IF_FAIL(data != NULL, TDM_ERROR_INVALID_PARAMETER);
 723
 724         err = tdm_output_get_layer_count(output, &count);
 725         if (err != TDM_ERROR_NONE) {
 726                 TDM_ERR("tdm_output_get_layer_count fail(%d)\n", err);
 727                 return TDM_ERROR_OPERATION_FAILED;
 728         }
 729         if (count <= 0) {
 730                 TDM_ERR("tdm_output_get_layer_count err(%d, %d)\n", err, count);
 731                 return TDM_ERROR_BAD_MODULE;
 732         }
 733
 734         for (i = count - 1; i >= 0; i--) {
 735                 tdm_layer *layer = tdm_output_get_layer(output, i, NULL);
 736
 737                 surface = tdm_layer_get_displaying_buffer(layer, &err);
 738                 if (err != TDM_ERROR_NONE)
 739                         continue;
 740
 741                 err = _tdm_helper_buffer_convert(surface, dst_buffer, x, y, w, h, first++);
 742                 if (err != TDM_ERROR_NONE)
 743                         TDM_DBG("convert fail %d-layer buffer\n", i);
 744                 else
 745                         TDM_DBG("convert success %d-layer buffer\n", i);
 746         }
 747
 748         func(dst_buffer, data);
 749
 750         return TDM_ERROR_NONE;
 751 }
 752
 753 EXTERN void
 754 tdm_helper_get_display_information(tdm_display *dpy, char *reply, int *len)
 755 {
 756         tdm_private_display *private_display;
 757         tdm_backend_module *module_data;
 758         tdm_func_output *func_output;
 759         tdm_func_layer *func_layer;
 760         tdm_private_output *private_output = NULL;
 761         tdm_private_layer *private_layer = NULL;
 762         tdm_private_pp *private_pp = NULL;
 763         tdm_private_capture *private_capture = NULL;
 764         tdm_error ret;
 765         int i;
 766
 767         TDM_DBG_RETURN_IF_FAIL(dpy != NULL);
 768
 769         private_display = dpy;
 770         func_output = &private_display->func_output;
 771         func_layer = &private_display->func_layer;
 772         _pthread_mutex_lock(&private_display->lock);
 773
 774         /* module information */
 775         module_data = private_display->module_data;
 776         TDM_SNPRINTF(reply, len, "[TDM backend information]\n");
 777         TDM_SNPRINTF(reply, len, "name: %s\n", module_data->name);
 778         TDM_SNPRINTF(reply, len, "vendor: %s\n", module_data->vendor);
 779         TDM_SNPRINTF(reply, len, "version: %d.%d\n\n",
 780                                  (int)TDM_BACKEND_GET_ABI_MAJOR(module_data->abi_version),
 781                                  (int)TDM_BACKEND_GET_ABI_MINOR(module_data->abi_version));
 782
 783         /* output information */
 784         TDM_SNPRINTF(reply, len, "[Output information]\n");
 785         TDM_SNPRINTF(reply, len, "--------------------------------------------------------------------------------------------\n");
 786         TDM_SNPRINTF(reply, len, "idx   maker   model   name   type   status   dpms   subpixel   align_w   min   max   phy(mm)\n");
 787         TDM_SNPRINTF(reply, len, "--------------------------------------------------------------------------------------------\n");
 788         LIST_FOR_EACH_ENTRY(private_output, &private_display->output_list, link) {
 789                 TDM_SNPRINTF(reply, len, "%d   %s   %s   %s   %s   %s   %s   %u   %d   %dx%d   %dx%d   %ux%u\n",
 790                                          private_output->index, private_output->caps.maker,
 791                                          private_output->caps.model, private_output->caps.name,
 792                                          tdm_conn_str(private_output->caps.type),
 793                                          tdm_status_str(private_output->caps.status),
 794                                          tdm_dpms_str(private_output->current_dpms_value),
 795                                          private_output->caps.subpixel,
 796                                          TDM_FRONT_VALUE(private_output->caps.preferred_align),
 797                                          TDM_FRONT_VALUE(private_output->caps.min_w),
 798                                          TDM_FRONT_VALUE(private_output->caps.min_h),
 799                                          TDM_FRONT_VALUE(private_output->caps.max_w),
 800                                          TDM_FRONT_VALUE(private_output->caps.max_h),
 801                                          private_output->caps.mmWidth, private_output->caps.mmHeight);
 802
 803                 TDM_SNPRINTF(reply, len, "\t%u modes:\n", private_output->caps.mode_count);
 804
 805                 if (private_output->caps.mode_count > 0) {
 806                         const tdm_output_mode *current_mode = NULL;
 807
 808                         TDM_DBG_GOTO_IF_FAIL(func_output->output_get_mode, unlock);
 809                         ret = func_output->output_get_mode(private_output->output_backend, &current_mode);
 810                         TDM_DBG_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, unlock);
 811
 812                         TDM_SNPRINTF(reply, len, "\t\t name refresh (Hz) clk hdisp hss hse htot vdisp vss vse vtot vscan\n");
 813                         for (i = 0; i < private_output->caps.mode_count; i++) {
 814                                 char *current = (current_mode == private_output->caps.modes + i) ? "*" : " ";
 815                                 TDM_SNPRINTF(reply, len, "\t\t%s%s %u %u %u %u %u %u %u %u %u %u %u ",
 816                                                          current,
 817                                                          private_output->caps.modes[i].name,
 818                                                          private_output->caps.modes[i].vrefresh,
 819                                                          private_output->caps.modes[i].clock,
 820                                                          private_output->caps.modes[i].hdisplay,
 821                                                          private_output->caps.modes[i].hsync_start,
 822                                                          private_output->caps.modes[i].hsync_end,
 823                                                          private_output->caps.modes[i].htotal,
 824                                                          private_output->caps.modes[i].vdisplay,
 825                                                          private_output->caps.modes[i].vsync_start,
 826                                                          private_output->caps.modes[i].vsync_end,
 827                                                          private_output->caps.modes[i].vtotal,
 828                                                          private_output->caps.modes[i].vscan);
 829                                 tdm_mode_flag_str(private_output->caps.modes[i].flags, &reply, len);
 830                                 TDM_SNPRINTF(reply, len, " ");
 831                                 tdm_mode_type_str(private_output->caps.modes[i].type, &reply, len);
 832                                 TDM_SNPRINTF(reply, len, "\n");
 833                         }
 834                 }
 835
 836                 TDM_SNPRINTF(reply, len, "\t%d properties:\n", private_output->caps.prop_count);
 837                 if (private_output->caps.prop_count > 0) {
 838                         TDM_SNPRINTF(reply, len, "\t\tname\tidx\tvalue\n");
 839                         for (i = 0; i < private_output->caps.prop_count; i++) {
 840                                 tdm_value value;
 841                                 TDM_DBG_GOTO_IF_FAIL(func_output->output_get_property, unlock);
 842                                 ret = func_output->output_get_property(private_output->output_backend,
 843                                                                                                            private_output->caps.props[i].id,
 844                                                                                                            &value);
 845                                 TDM_DBG_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, unlock);
 846                                 TDM_SNPRINTF(reply, len, "\t\t%s\t%u\t%u\n",
 847                                                          private_output->caps.props[i].name,
 848                                                          private_output->caps.props[i].id,
 849                                                          value.u32);
 850                         }
 851                 }
 852         }
 853         TDM_SNPRINTF(reply, len, "\n");
 854
 855         /* layer information */
 856         TDM_SNPRINTF(reply, len, "[Layer information]\n");
 857         TDM_SNPRINTF(reply, len, "-----------------------------------------------------------------------\n");
 858         TDM_SNPRINTF(reply, len, "idx   output   zpos   buf   format   size   crop   geometry   transform\n");
 859         TDM_SNPRINTF(reply, len, "-----------------------------------------------------------------------\n");
 860         LIST_FOR_EACH_ENTRY(private_output, &private_display->output_list, link) {
 861                 LIST_FOR_EACH_ENTRY(private_layer, &private_output->layer_list, link) {
 862                         if (!private_layer->usable) {
 863                                 tdm_info_layer info;
 864                                 unsigned int format;
 865                                 tdm_size size;
 866                                 tbm_surface_info_s buf_info;
 867
 868                                 TDM_DBG_GOTO_IF_FAIL(func_layer->layer_get_info, unlock);
 869                                 memset(&info, 0, sizeof info);
 870                                 ret = func_layer->layer_get_info(private_layer->layer_backend, &info);
 871                                 TDM_DBG_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, unlock);
 872
 873                                 if (!private_layer->showing_buffer)
 874                                         continue;
 875
 876                                 format = tbm_surface_get_format(private_layer->showing_buffer->buffer);
 877                                 tbm_surface_get_info(private_layer->showing_buffer->buffer, &buf_info);
 878
 879                                 if (IS_RGB(format))
 880                                         size.h = buf_info.planes[0].stride >> 2;
 881                                 else
 882                                         size.h = buf_info.planes[0].stride;
 883                                 size.v = tbm_surface_get_height(private_layer->showing_buffer->buffer);
 884
 885                                 if (info.src_config.format)
 886                                         format = (info.src_config.format) ? : format;
 887
 888                                 TDM_SNPRINTF(reply, len, "%d   %d   %d   %p   %c%c%c%c   %ux%u   %ux%u+%u+%u   %ux%u+%u+%u   %s\n",
 889                                                          private_layer->index,
 890                                                          private_output->index,
 891                                                          private_layer->caps.zpos,
 892                                                          private_layer->showing_buffer->buffer, FOURCC_STR(format), size.h, size.v,
 893                                                          info.src_config.pos.w, info.src_config.pos.h, info.src_config.pos.x, info.src_config.pos.y,
 894                                                          info.dst_pos.w, info.dst_pos.h, info.dst_pos.x, info.dst_pos.y,
 895                                                          tdm_transform_str(info.transform));
 896                         } else {
 897                                 TDM_SNPRINTF(reply, len, "%d   %d   %d   -\n",
 898                                                          private_layer->index,
 899                                                          private_output->index,
 900                                                          private_layer->caps.zpos);
 901                         }
 902
 903                         TDM_SNPRINTF(reply, len, "\tcaps\t: ");
 904                         tdm_layer_caps_str(private_layer->caps.capabilities, &reply, len);
 905                         TDM_SNPRINTF(reply, len, "\n");
 906
 907                         TDM_SNPRINTF(reply, len, "\tformats\t: ");
 908                         if (private_layer->caps.format_count > 0) {
 909                                 const char *sep = "";
 910                                 for (i = 0; i < private_layer->caps.format_count; i++) {
 911                                         if (private_layer->caps.formats[i] == 0)
 912                                                 continue;
 913                                         TDM_SNPRINTF(reply, len, "%s%c%c%c%c", sep, FOURCC_STR(private_layer->caps.formats[i]));
 914                                         sep = ",";
 915                                 }
 916                                 TDM_SNPRINTF(reply, len, "\n");
 917                         }
 918
 919                         TDM_SNPRINTF(reply, len, "\t%u properties:\n", private_layer->caps.prop_count);
 920                         if (private_layer->caps.prop_count > 0) {
 921                                 TDM_SNPRINTF(reply, len, "\t\tname\tidx\tvalue\n");
 922                                 for (i = 0; i < private_layer->caps.prop_count; i++) {
 923                                         tdm_value value;
 924                                         TDM_DBG_GOTO_IF_FAIL(func_layer->layer_get_property, unlock);
 925                                         ret = func_layer->layer_get_property(private_layer->layer_backend,
 926                                                                                                                  private_layer->caps.props[i].id,
 927                                                                                                                  &value);
 928                                         TDM_DBG_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, unlock);
 929                                         TDM_SNPRINTF(reply, len, "\t\t%s\t%u\t%u\n",
 930                                                                  private_layer->caps.props[i].name,
 931                                                                  private_layer->caps.props[i].id,
 932                                                                  value.u32);
 933                                 }
 934                         }
 935                 }
 936         }
 937         TDM_SNPRINTF(reply, len, "\n");
 938
 939         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_PP) {
 940                 const char *sep = "";
 941                 TDM_SNPRINTF(reply, len, "[PP information]\n");
 942                 TDM_SNPRINTF(reply, len, "caps\t: ");
 943                 tdm_pp_caps_str(private_display->caps_pp.capabilities, &reply, len);
 944                 TDM_SNPRINTF(reply, len, "\n");
 945                 TDM_SNPRINTF(reply, len, "formats\t: ");
 946                 for (i = 0; i < private_display->caps_pp.format_count; i++) {
 947                         if (private_display->caps_pp.formats[i] == 0)
 948                                 continue;
 949                         TDM_SNPRINTF(reply, len, "%s%c%c%c%c", sep, FOURCC_STR(private_display->caps_pp.formats[i]));
 950                         sep = ",";
 951                 }
 952                 TDM_SNPRINTF(reply, len, "\n");
 953                 TDM_SNPRINTF(reply, len, "size\t: min(%dx%d) max(%dx%d) align_w(%d)\n",
 954                                          TDM_FRONT_VALUE(private_display->caps_pp.min_w),
 955                                          TDM_FRONT_VALUE(private_display->caps_pp.min_h),
 956                                          TDM_FRONT_VALUE(private_display->caps_pp.max_w),
 957                                          TDM_FRONT_VALUE(private_display->caps_pp.max_h),
 958                                          TDM_FRONT_VALUE(private_display->caps_pp.preferred_align));
 959                 if (!LIST_IS_EMPTY(&private_display->pp_list)) {
 960                         TDM_SNPRINTF(reply, len, "-------------------------------------------------------------\n");
 961                         TDM_SNPRINTF(reply, len, "src(format size crop)  |  dst(format size crop)  |  transform\n");
 962                         TDM_SNPRINTF(reply, len, "-------------------------------------------------------------\n");
 963                         LIST_FOR_EACH_ENTRY(private_pp, &private_display->pp_list, link) {
 964                                 TDM_SNPRINTF(reply, len, "%c%c%c%c %ux%u %ux%u+%u+%u | %c%c%c%c %ux%u %ux%u+%u+%u | %s\n",
 965                                                          FOURCC_STR(private_pp->info.src_config.format),
 966                                                          private_pp->info.src_config.size.h,
 967                                                          private_pp->info.src_config.size.v,
 968                                                          private_pp->info.src_config.pos.x, private_pp->info.src_config.pos.y,
 969                                                          private_pp->info.src_config.pos.w, private_pp->info.src_config.pos.h,
 970                                                          FOURCC_STR(private_pp->info.dst_config.format),
 971                                                          private_pp->info.dst_config.size.h,
 972                                                          private_pp->info.dst_config.size.v,
 973                                                          private_pp->info.dst_config.pos.x, private_pp->info.dst_config.pos.y,
 974                                                          private_pp->info.dst_config.pos.w, private_pp->info.dst_config.pos.h,
 975                                                          tdm_transform_str(private_pp->info.transform));
 976                         }
 977                 }
 978         } else {
 979                 TDM_SNPRINTF(reply, len, "[No PP capability]\n");
 980         }
 981         TDM_SNPRINTF(reply, len, "\n");
 982
 983         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE) {
 984                 const char *sep = "";
 985                 TDM_SNPRINTF(reply, len, "[Capture information]\n");
 986                 TDM_SNPRINTF(reply, len, "caps\t: ");
 987                 tdm_capture_caps_str(private_display->caps_capture.capabilities, &reply, len);
 988                 TDM_SNPRINTF(reply, len, "\n");
 989                 TDM_SNPRINTF(reply, len, "formats\t: ");
 990                 for (i = 0; i < private_display->caps_capture.format_count; i++) {
 991                         if (private_display->caps_capture.formats[i] == 0)
 992                                 continue;
 993                         TDM_SNPRINTF(reply, len, "%s%c%c%c%c", sep, FOURCC_STR(private_display->caps_capture.formats[i]));
 994                         sep = ",";
 995                 }
 996                 TDM_SNPRINTF(reply, len, "\n");
 997                 TDM_SNPRINTF(reply, len, "size\t: min(%dx%d) max(%dx%d) align_w(%d)\n",
 998                                          TDM_FRONT_VALUE(private_display->caps_capture.min_w),
 999                                          TDM_FRONT_VALUE(private_display->caps_capture.min_h),
1000                                          TDM_FRONT_VALUE(private_display->caps_capture.max_w),
1001                                          TDM_FRONT_VALUE(private_display->caps_capture.max_h),
1002                                          TDM_FRONT_VALUE(private_display->caps_capture.preferred_align));
1003                 if (!LIST_IS_EMPTY(&private_display->capture_list)) {
1004                         TDM_SNPRINTF(reply, len, "-----------------------------------\n");
1005                         TDM_SNPRINTF(reply, len, "dst(format size crop)  |  transform\n");
1006                         TDM_SNPRINTF(reply, len, "-----------------------------------\n");
1007                         LIST_FOR_EACH_ENTRY(private_capture, &private_display->capture_list, link) {
1008                                 TDM_SNPRINTF(reply, len, "%c%c%c%c %ux%u %ux%u+%u+%u | %s\n",
1009                                                          FOURCC_STR(private_capture->info.dst_config.format),
1010                                                          private_capture->info.dst_config.size.h,
1011                                                          private_capture->info.dst_config.size.v,
1012                                                          private_capture->info.dst_config.pos.x, private_capture->info.dst_config.pos.y,
1013                                                          private_capture->info.dst_config.pos.w, private_capture->info.dst_config.pos.h,
1014                                                          tdm_transform_str(private_capture->info.transform));
1015                         }
1016                 }
1017         } else {
1018                 TDM_SNPRINTF(reply, len, "[No Capture capability]\n");
1019         }
1020         TDM_SNPRINTF(reply, len, "\n");
1021
1022 unlock:
1023         _pthread_mutex_unlock(&private_display->lock);
1024 }
1025
1026 EXTERN int
1027 tdm_helper_commit_per_vblank_enabled(tdm_display *dpy)
1028 {
1029         tdm_private_display *private_display;
1030
1031         TDM_RETURN_VAL_IF_FAIL(dpy != NULL, 0);
1032
1033         private_display = dpy;
1034
1035         return private_display->commit_per_vblank;
1036 }
1037