window.h revision afcdef635718985aae26e5f94c21ae4f3248a0b9
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H 18#define SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H 19 20#include <stdint.h> 21#include <string.h> 22#include <sys/cdefs.h> 23#include <system/graphics.h> 24#include <cutils/native_handle.h> 25 26__BEGIN_DECLS 27 28/*****************************************************************************/ 29 30#define ANDROID_NATIVE_MAKE_CONSTANT(a,b,c,d) \ 31 (((unsigned)(a)<<24)|((unsigned)(b)<<16)|((unsigned)(c)<<8)|(unsigned)(d)) 32 33#define ANDROID_NATIVE_WINDOW_MAGIC \ 34 ANDROID_NATIVE_MAKE_CONSTANT('_','w','n','d') 35 36#define ANDROID_NATIVE_BUFFER_MAGIC \ 37 ANDROID_NATIVE_MAKE_CONSTANT('_','b','f','r') 38 39// --------------------------------------------------------------------------- 40 41typedef const native_handle_t* buffer_handle_t; 42 43// --------------------------------------------------------------------------- 44 45typedef struct android_native_rect_t 46{ 47 int32_t left; 48 int32_t top; 49 int32_t right; 50 int32_t bottom; 51} android_native_rect_t; 52 53// --------------------------------------------------------------------------- 54 55typedef struct android_native_base_t 56{ 57 /* a magic value defined by the actual EGL native type */ 58 int magic; 59 60 /* the sizeof() of the actual EGL native type */ 61 int version; 62 63 void* reserved[4]; 64 65 /* reference-counting interface */ 66 void (*incRef)(struct android_native_base_t* base); 67 void (*decRef)(struct android_native_base_t* base); 68} android_native_base_t; 69 70typedef struct ANativeWindowBuffer 71{ 72#ifdef __cplusplus 73 ANativeWindowBuffer() { 74 common.magic = ANDROID_NATIVE_BUFFER_MAGIC; 75 common.version = sizeof(ANativeWindowBuffer); 76 memset(common.reserved, 0, sizeof(common.reserved)); 77 } 78 79 // Implement the methods that sp<ANativeWindowBuffer> expects so that it 80 // can be used to automatically refcount ANativeWindowBuffer's. 81 void incStrong(const void* id) const { 82 common.incRef(const_cast<android_native_base_t*>(&common)); 83 } 84 void decStrong(const void* id) const { 85 common.decRef(const_cast<android_native_base_t*>(&common)); 86 } 87#endif 88 89 struct android_native_base_t common; 90 91 int width; 92 int height; 93 int stride; 94 int format; 95 int usage; 96 97 void* reserved[2]; 98 99 buffer_handle_t handle; 100 101 void* reserved_proc[8]; 102} ANativeWindowBuffer_t; 103 104// Old typedef for backwards compatibility. 105typedef ANativeWindowBuffer_t android_native_buffer_t; 106 107// --------------------------------------------------------------------------- 108 109/* attributes queriable with query() */ 110enum { 111 NATIVE_WINDOW_WIDTH = 0, 112 NATIVE_WINDOW_HEIGHT = 1, 113 NATIVE_WINDOW_FORMAT = 2, 114 115 /* The minimum number of buffers that must remain un-dequeued after a buffer 116 * has been queued. This value applies only if set_buffer_count was used to 117 * override the number of buffers and if a buffer has since been queued. 118 * Users of the set_buffer_count ANativeWindow method should query this 119 * value before calling set_buffer_count. If it is necessary to have N 120 * buffers simultaneously dequeued as part of the steady-state operation, 121 * and this query returns M then N+M buffers should be requested via 122 * native_window_set_buffer_count. 123 * 124 * Note that this value does NOT apply until a single buffer has been 125 * queued. In particular this means that it is possible to: 126 * 127 * 1. Query M = min undequeued buffers 128 * 2. Set the buffer count to N + M 129 * 3. Dequeue all N + M buffers 130 * 4. Cancel M buffers 131 * 5. Queue, dequeue, queue, dequeue, ad infinitum 132 */ 133 NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS = 3, 134 135 /* Check whether queueBuffer operations on the ANativeWindow send the buffer 136 * to the window compositor. The query sets the returned 'value' argument 137 * to 1 if the ANativeWindow DOES send queued buffers directly to the window 138 * compositor and 0 if the buffers do not go directly to the window 139 * compositor. 140 * 141 * This can be used to determine whether protected buffer content should be 142 * sent to the ANativeWindow. Note, however, that a result of 1 does NOT 143 * indicate that queued buffers will be protected from applications or users 144 * capturing their contents. If that behavior is desired then some other 145 * mechanism (e.g. the GRALLOC_USAGE_PROTECTED flag) should be used in 146 * conjunction with this query. 147 */ 148 NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER = 4, 149 150 /* Get the concrete type of a ANativeWindow. See below for the list of 151 * possible return values. 152 * 153 * This query should not be used outside the Android framework and will 154 * likely be removed in the near future. 155 */ 156 NATIVE_WINDOW_CONCRETE_TYPE = 5, 157 158 159 /* 160 * Default width and height of ANativeWindow buffers, these are the 161 * dimensions of the window buffers irrespective of the 162 * NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS call and match the native window 163 * size unless overriden by NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS. 164 */ 165 NATIVE_WINDOW_DEFAULT_WIDTH = 6, 166 NATIVE_WINDOW_DEFAULT_HEIGHT = 7, 167 168 /* 169 * transformation that will most-likely be applied to buffers. This is only 170 * a hint, the actual transformation applied might be different. 171 * 172 * INTENDED USE: 173 * 174 * The transform hint can be used by a producer, for instance the GLES 175 * driver, to pre-rotate the rendering such that the final transformation 176 * in the composer is identity. This can be very useful when used in 177 * conjunction with the h/w composer HAL, in situations where it 178 * cannot handle arbitrary rotations. 179 * 180 * 1. Before dequeuing a buffer, the GL driver (or any other ANW client) 181 * queries the ANW for NATIVE_WINDOW_TRANSFORM_HINT. 182 * 183 * 2. The GL driver overrides the width and height of the ANW to 184 * account for NATIVE_WINDOW_TRANSFORM_HINT. This is done by querying 185 * NATIVE_WINDOW_DEFAULT_{WIDTH | HEIGHT}, swapping the dimensions 186 * according to NATIVE_WINDOW_TRANSFORM_HINT and calling 187 * native_window_set_buffers_dimensions(). 188 * 189 * 3. The GL driver dequeues a buffer of the new pre-rotated size. 190 * 191 * 4. The GL driver renders to the buffer such that the image is 192 * already transformed, that is applying NATIVE_WINDOW_TRANSFORM_HINT 193 * to the rendering. 194 * 195 * 5. The GL driver calls native_window_set_transform to apply 196 * inverse transformation to the buffer it just rendered. 197 * In order to do this, the GL driver needs 198 * to calculate the inverse of NATIVE_WINDOW_TRANSFORM_HINT, this is 199 * done easily: 200 * 201 * int hintTransform, inverseTransform; 202 * query(..., NATIVE_WINDOW_TRANSFORM_HINT, &hintTransform); 203 * inverseTransform = hintTransform; 204 * if (hintTransform & HAL_TRANSFORM_ROT_90) 205 * inverseTransform ^= HAL_TRANSFORM_ROT_180; 206 * 207 * 208 * 6. The GL driver queues the pre-transformed buffer. 209 * 210 * 7. The composer combines the buffer transform with the display 211 * transform. If the buffer transform happens to cancel out the 212 * display transform then no rotation is needed. 213 * 214 */ 215 NATIVE_WINDOW_TRANSFORM_HINT = 8, 216}; 217 218/* valid operations for the (*perform)() hook */ 219enum { 220 NATIVE_WINDOW_SET_USAGE = 0, 221 NATIVE_WINDOW_CONNECT = 1, /* deprecated */ 222 NATIVE_WINDOW_DISCONNECT = 2, /* deprecated */ 223 NATIVE_WINDOW_SET_CROP = 3, 224 NATIVE_WINDOW_SET_BUFFER_COUNT = 4, 225 NATIVE_WINDOW_SET_BUFFERS_GEOMETRY = 5, /* deprecated */ 226 NATIVE_WINDOW_SET_BUFFERS_TRANSFORM = 6, 227 NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP = 7, 228 NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS = 8, 229 NATIVE_WINDOW_SET_BUFFERS_FORMAT = 9, 230 NATIVE_WINDOW_SET_SCALING_MODE = 10, 231 NATIVE_WINDOW_LOCK = 11, /* private */ 232 NATIVE_WINDOW_UNLOCK_AND_POST = 12, /* private */ 233 NATIVE_WINDOW_API_CONNECT = 13, /* private */ 234 NATIVE_WINDOW_API_DISCONNECT = 14, /* private */ 235 NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS = 15, /* private */ 236}; 237 238/* parameter for NATIVE_WINDOW_[API_][DIS]CONNECT */ 239enum { 240 /* Buffers will be queued by EGL via eglSwapBuffers after being filled using 241 * OpenGL ES. 242 */ 243 NATIVE_WINDOW_API_EGL = 1, 244 245 /* Buffers will be queued after being filled using the CPU 246 */ 247 NATIVE_WINDOW_API_CPU = 2, 248 249 /* Buffers will be queued by Stagefright after being filled by a video 250 * decoder. The video decoder can either be a software or hardware decoder. 251 */ 252 NATIVE_WINDOW_API_MEDIA = 3, 253 254 /* Buffers will be queued by the the camera HAL. 255 */ 256 NATIVE_WINDOW_API_CAMERA = 4, 257}; 258 259/* parameter for NATIVE_WINDOW_SET_BUFFERS_TRANSFORM */ 260enum { 261 /* flip source image horizontally */ 262 NATIVE_WINDOW_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H , 263 /* flip source image vertically */ 264 NATIVE_WINDOW_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V, 265 /* rotate source image 90 degrees clock-wise */ 266 NATIVE_WINDOW_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90, 267 /* rotate source image 180 degrees */ 268 NATIVE_WINDOW_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180, 269 /* rotate source image 270 degrees clock-wise */ 270 NATIVE_WINDOW_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270, 271}; 272 273/* parameter for NATIVE_WINDOW_SET_SCALING_MODE */ 274enum { 275 /* the window content is not updated (frozen) until a buffer of 276 * the window size is received (enqueued) 277 */ 278 NATIVE_WINDOW_SCALING_MODE_FREEZE = 0, 279 /* the buffer is scaled in both dimensions to match the window size */ 280 NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW = 1, 281}; 282 283/* values returned by the NATIVE_WINDOW_CONCRETE_TYPE query */ 284enum { 285 NATIVE_WINDOW_FRAMEBUFFER = 0, /* FramebufferNativeWindow */ 286 NATIVE_WINDOW_SURFACE = 1, /* Surface */ 287 NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT = 2, /* SurfaceTextureClient */ 288}; 289 290/* parameter for NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 291 * 292 * Special timestamp value to indicate that timestamps should be auto-generated 293 * by the native window when queueBuffer is called. This is equal to INT64_MIN, 294 * defined directly to avoid problems with C99/C++ inclusion of stdint.h. 295 */ 296static const int64_t NATIVE_WINDOW_TIMESTAMP_AUTO = (-9223372036854775807LL-1); 297 298struct ANativeWindow 299{ 300#ifdef __cplusplus 301 ANativeWindow() 302 : flags(0), minSwapInterval(0), maxSwapInterval(0), xdpi(0), ydpi(0) 303 { 304 common.magic = ANDROID_NATIVE_WINDOW_MAGIC; 305 common.version = sizeof(ANativeWindow); 306 memset(common.reserved, 0, sizeof(common.reserved)); 307 } 308 309 /* Implement the methods that sp<ANativeWindow> expects so that it 310 can be used to automatically refcount ANativeWindow's. */ 311 void incStrong(const void* id) const { 312 common.incRef(const_cast<android_native_base_t*>(&common)); 313 } 314 void decStrong(const void* id) const { 315 common.decRef(const_cast<android_native_base_t*>(&common)); 316 } 317#endif 318 319 struct android_native_base_t common; 320 321 /* flags describing some attributes of this surface or its updater */ 322 const uint32_t flags; 323 324 /* min swap interval supported by this updated */ 325 const int minSwapInterval; 326 327 /* max swap interval supported by this updated */ 328 const int maxSwapInterval; 329 330 /* horizontal and vertical resolution in DPI */ 331 const float xdpi; 332 const float ydpi; 333 334 /* Some storage reserved for the OEM's driver. */ 335 intptr_t oem[4]; 336 337 /* 338 * Set the swap interval for this surface. 339 * 340 * Returns 0 on success or -errno on error. 341 */ 342 int (*setSwapInterval)(struct ANativeWindow* window, 343 int interval); 344 345 /* 346 * Hook called by EGL to acquire a buffer. After this call, the buffer 347 * is not locked, so its content cannot be modified. This call may block if 348 * no buffers are available. 349 * 350 * The window holds a reference to the buffer between dequeueBuffer and 351 * either queueBuffer or cancelBuffer, so clients only need their own 352 * reference if they might use the buffer after queueing or canceling it. 353 * Holding a reference to a buffer after queueing or canceling it is only 354 * allowed if a specific buffer count has been set. 355 * 356 * Returns 0 on success or -errno on error. 357 */ 358 int (*dequeueBuffer)(struct ANativeWindow* window, 359 struct ANativeWindowBuffer** buffer); 360 361 /* 362 * hook called by EGL to lock a buffer. This MUST be called before modifying 363 * the content of a buffer. The buffer must have been acquired with 364 * dequeueBuffer first. 365 * 366 * Returns 0 on success or -errno on error. 367 */ 368 int (*lockBuffer)(struct ANativeWindow* window, 369 struct ANativeWindowBuffer* buffer); 370 /* 371 * Hook called by EGL when modifications to the render buffer are done. 372 * This unlocks and post the buffer. 373 * 374 * The window holds a reference to the buffer between dequeueBuffer and 375 * either queueBuffer or cancelBuffer, so clients only need their own 376 * reference if they might use the buffer after queueing or canceling it. 377 * Holding a reference to a buffer after queueing or canceling it is only 378 * allowed if a specific buffer count has been set. 379 * 380 * Buffers MUST be queued in the same order than they were dequeued. 381 * 382 * Returns 0 on success or -errno on error. 383 */ 384 int (*queueBuffer)(struct ANativeWindow* window, 385 struct ANativeWindowBuffer* buffer); 386 387 /* 388 * hook used to retrieve information about the native window. 389 * 390 * Returns 0 on success or -errno on error. 391 */ 392 int (*query)(const struct ANativeWindow* window, 393 int what, int* value); 394 395 /* 396 * hook used to perform various operations on the surface. 397 * (*perform)() is a generic mechanism to add functionality to 398 * ANativeWindow while keeping backward binary compatibility. 399 * 400 * DO NOT CALL THIS HOOK DIRECTLY. Instead, use the helper functions 401 * defined below. 402 * 403 * (*perform)() returns -ENOENT if the 'what' parameter is not supported 404 * by the surface's implementation. 405 * 406 * The valid operations are: 407 * NATIVE_WINDOW_SET_USAGE 408 * NATIVE_WINDOW_CONNECT (deprecated) 409 * NATIVE_WINDOW_DISCONNECT (deprecated) 410 * NATIVE_WINDOW_SET_CROP 411 * NATIVE_WINDOW_SET_BUFFER_COUNT 412 * NATIVE_WINDOW_SET_BUFFERS_GEOMETRY (deprecated) 413 * NATIVE_WINDOW_SET_BUFFERS_TRANSFORM 414 * NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 415 * NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS 416 * NATIVE_WINDOW_SET_BUFFERS_FORMAT 417 * NATIVE_WINDOW_SET_SCALING_MODE 418 * NATIVE_WINDOW_LOCK (private) 419 * NATIVE_WINDOW_UNLOCK_AND_POST (private) 420 * NATIVE_WINDOW_API_CONNECT (private) 421 * NATIVE_WINDOW_API_DISCONNECT (private) 422 * NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS (private) 423 * 424 */ 425 426 int (*perform)(struct ANativeWindow* window, 427 int operation, ... ); 428 429 /* 430 * Hook used to cancel a buffer that has been dequeued. 431 * No synchronization is performed between dequeue() and cancel(), so 432 * either external synchronization is needed, or these functions must be 433 * called from the same thread. 434 * 435 * The window holds a reference to the buffer between dequeueBuffer and 436 * either queueBuffer or cancelBuffer, so clients only need their own 437 * reference if they might use the buffer after queueing or canceling it. 438 * Holding a reference to a buffer after queueing or canceling it is only 439 * allowed if a specific buffer count has been set. 440 */ 441 int (*cancelBuffer)(struct ANativeWindow* window, 442 struct ANativeWindowBuffer* buffer); 443 444 445 void* reserved_proc[2]; 446}; 447 448 /* Backwards compatibility: use ANativeWindow (struct ANativeWindow in C). 449 * android_native_window_t is deprecated. 450 */ 451typedef struct ANativeWindow ANativeWindow; 452typedef struct ANativeWindow android_native_window_t; 453 454/* 455 * native_window_set_usage(..., usage) 456 * Sets the intended usage flags for the next buffers 457 * acquired with (*lockBuffer)() and on. 458 * By default (if this function is never called), a usage of 459 * GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE 460 * is assumed. 461 * Calling this function will usually cause following buffers to be 462 * reallocated. 463 */ 464 465static inline int native_window_set_usage( 466 struct ANativeWindow* window, int usage) 467{ 468 return window->perform(window, NATIVE_WINDOW_SET_USAGE, usage); 469} 470 471/* deprecated. Always returns 0. Don't call. */ 472static inline int native_window_connect( 473 struct ANativeWindow* window, int api) { 474 return 0; 475} 476 477/* deprecated. Always returns 0. Don't call. */ 478static inline int native_window_disconnect( 479 struct ANativeWindow* window, int api) { 480 return 0; 481} 482 483/* 484 * native_window_set_crop(..., crop) 485 * Sets which region of the next queued buffers needs to be considered. 486 * A buffer's crop region is scaled to match the surface's size. 487 * 488 * The specified crop region applies to all buffers queued after it is called. 489 * 490 * if 'crop' is NULL, subsequently queued buffers won't be cropped. 491 * 492 * An error is returned if for instance the crop region is invalid, 493 * out of the buffer's bound or if the window is invalid. 494 */ 495static inline int native_window_set_crop( 496 struct ANativeWindow* window, 497 android_native_rect_t const * crop) 498{ 499 return window->perform(window, NATIVE_WINDOW_SET_CROP, crop); 500} 501 502/* 503 * native_window_set_buffer_count(..., count) 504 * Sets the number of buffers associated with this native window. 505 */ 506static inline int native_window_set_buffer_count( 507 struct ANativeWindow* window, 508 size_t bufferCount) 509{ 510 return window->perform(window, NATIVE_WINDOW_SET_BUFFER_COUNT, bufferCount); 511} 512 513/* 514 * native_window_set_buffers_geometry(..., int w, int h, int format) 515 * All buffers dequeued after this call will have the dimensions and format 516 * specified. A successful call to this function has the same effect as calling 517 * native_window_set_buffers_size and native_window_set_buffers_format. 518 * 519 * XXX: This function is deprecated. The native_window_set_buffers_dimensions 520 * and native_window_set_buffers_format functions should be used instead. 521 */ 522static inline int native_window_set_buffers_geometry( 523 struct ANativeWindow* window, 524 int w, int h, int format) 525{ 526 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_GEOMETRY, 527 w, h, format); 528} 529 530/* 531 * native_window_set_buffers_dimensions(..., int w, int h) 532 * All buffers dequeued after this call will have the dimensions specified. 533 * In particular, all buffers will have a fixed-size, independent from the 534 * native-window size. They will be scaled according to the scaling mode 535 * (see native_window_set_scaling_mode) upon window composition. 536 * 537 * If w and h are 0, the normal behavior is restored. That is, dequeued buffers 538 * following this call will be sized to match the window's size. 539 * 540 * Calling this function will reset the window crop to a NULL value, which 541 * disables cropping of the buffers. 542 */ 543static inline int native_window_set_buffers_dimensions( 544 struct ANativeWindow* window, 545 int w, int h) 546{ 547 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS, 548 w, h); 549} 550 551/* 552 * native_window_set_buffers_user_dimensions(..., int w, int h) 553 * 554 * Sets the user buffer size for the window, which overrides the 555 * window's size. All buffers dequeued after this call will have the 556 * dimensions specified unless overridden by 557 * native_window_set_buffers_dimensions. All buffers will have a 558 * fixed-size, independent from the native-window size. They will be 559 * scaled according to the scaling mode (see 560 * native_window_set_scaling_mode) upon window composition. 561 * 562 * If w and h are 0, the normal behavior is restored. That is, the 563 * default buffer size will match the windows's size. 564 * 565 * Calling this function will reset the window crop to a NULL value, which 566 * disables cropping of the buffers. 567 */ 568static inline int native_window_set_buffers_user_dimensions( 569 struct ANativeWindow* window, 570 int w, int h) 571{ 572 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS, 573 w, h); 574} 575 576/* 577 * native_window_set_buffers_format(..., int format) 578 * All buffers dequeued after this call will have the format specified. 579 * 580 * If the specified format is 0, the default buffer format will be used. 581 */ 582static inline int native_window_set_buffers_format( 583 struct ANativeWindow* window, 584 int format) 585{ 586 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_FORMAT, format); 587} 588 589/* 590 * native_window_set_buffers_transform(..., int transform) 591 * All buffers queued after this call will be displayed transformed according 592 * to the transform parameter specified. 593 */ 594static inline int native_window_set_buffers_transform( 595 struct ANativeWindow* window, 596 int transform) 597{ 598 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TRANSFORM, 599 transform); 600} 601 602/* 603 * native_window_set_buffers_timestamp(..., int64_t timestamp) 604 * All buffers queued after this call will be associated with the timestamp 605 * parameter specified. If the timestamp is set to NATIVE_WINDOW_TIMESTAMP_AUTO 606 * (the default), timestamps will be generated automatically when queueBuffer is 607 * called. The timestamp is measured in nanoseconds, and is normally monotonically 608 * increasing. The timestamp should be unaffected by time-of-day adjustments, 609 * and for a camera should be strictly monotonic but for a media player may be 610 * reset when the position is set. 611 */ 612static inline int native_window_set_buffers_timestamp( 613 struct ANativeWindow* window, 614 int64_t timestamp) 615{ 616 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP, 617 timestamp); 618} 619 620/* 621 * native_window_set_scaling_mode(..., int mode) 622 * All buffers queued after this call will be associated with the scaling mode 623 * specified. 624 */ 625static inline int native_window_set_scaling_mode( 626 struct ANativeWindow* window, 627 int mode) 628{ 629 return window->perform(window, NATIVE_WINDOW_SET_SCALING_MODE, 630 mode); 631} 632 633 634/* 635 * native_window_api_connect(..., int api) 636 * connects an API to this window. only one API can be connected at a time. 637 * Returns -EINVAL if for some reason the window cannot be connected, which 638 * can happen if it's connected to some other API. 639 */ 640static inline int native_window_api_connect( 641 struct ANativeWindow* window, int api) 642{ 643 return window->perform(window, NATIVE_WINDOW_API_CONNECT, api); 644} 645 646/* 647 * native_window_api_disconnect(..., int api) 648 * disconnect the API from this window. 649 * An error is returned if for instance the window wasn't connected in the 650 * first place. 651 */ 652static inline int native_window_api_disconnect( 653 struct ANativeWindow* window, int api) 654{ 655 return window->perform(window, NATIVE_WINDOW_API_DISCONNECT, api); 656} 657 658 659__END_DECLS 660 661#endif /* SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H */ 662