window.h revision aab19bbcb63eb3555291b4efd06282403b9eb002
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 /* the buffer is scaled uniformly such that the smaller dimension 282 * of the buffer matches the window size (cropping in the process) 283 */ 284 NATIVE_WINDOW_SCALING_MODE_SCALE_CROP = 2, 285}; 286 287/* values returned by the NATIVE_WINDOW_CONCRETE_TYPE query */ 288enum { 289 NATIVE_WINDOW_FRAMEBUFFER = 0, /* FramebufferNativeWindow */ 290 NATIVE_WINDOW_SURFACE = 1, /* Surface */ 291 NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT = 2, /* SurfaceTextureClient */ 292}; 293 294/* parameter for NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 295 * 296 * Special timestamp value to indicate that timestamps should be auto-generated 297 * by the native window when queueBuffer is called. This is equal to INT64_MIN, 298 * defined directly to avoid problems with C99/C++ inclusion of stdint.h. 299 */ 300static const int64_t NATIVE_WINDOW_TIMESTAMP_AUTO = (-9223372036854775807LL-1); 301 302struct ANativeWindow 303{ 304#ifdef __cplusplus 305 ANativeWindow() 306 : flags(0), minSwapInterval(0), maxSwapInterval(0), xdpi(0), ydpi(0) 307 { 308 common.magic = ANDROID_NATIVE_WINDOW_MAGIC; 309 common.version = sizeof(ANativeWindow); 310 memset(common.reserved, 0, sizeof(common.reserved)); 311 } 312 313 /* Implement the methods that sp<ANativeWindow> expects so that it 314 can be used to automatically refcount ANativeWindow's. */ 315 void incStrong(const void* id) const { 316 common.incRef(const_cast<android_native_base_t*>(&common)); 317 } 318 void decStrong(const void* id) const { 319 common.decRef(const_cast<android_native_base_t*>(&common)); 320 } 321#endif 322 323 struct android_native_base_t common; 324 325 /* flags describing some attributes of this surface or its updater */ 326 const uint32_t flags; 327 328 /* min swap interval supported by this updated */ 329 const int minSwapInterval; 330 331 /* max swap interval supported by this updated */ 332 const int maxSwapInterval; 333 334 /* horizontal and vertical resolution in DPI */ 335 const float xdpi; 336 const float ydpi; 337 338 /* Some storage reserved for the OEM's driver. */ 339 intptr_t oem[4]; 340 341 /* 342 * Set the swap interval for this surface. 343 * 344 * Returns 0 on success or -errno on error. 345 */ 346 int (*setSwapInterval)(struct ANativeWindow* window, 347 int interval); 348 349 /* 350 * Hook called by EGL to acquire a buffer. After this call, the buffer 351 * is not locked, so its content cannot be modified. This call may block if 352 * no buffers are available. 353 * 354 * The window holds a reference to the buffer between dequeueBuffer and 355 * either queueBuffer or cancelBuffer, so clients only need their own 356 * reference if they might use the buffer after queueing or canceling it. 357 * Holding a reference to a buffer after queueing or canceling it is only 358 * allowed if a specific buffer count has been set. 359 * 360 * Returns 0 on success or -errno on error. 361 */ 362 int (*dequeueBuffer)(struct ANativeWindow* window, 363 struct ANativeWindowBuffer** buffer); 364 365 /* 366 * hook called by EGL to lock a buffer. This MUST be called before modifying 367 * the content of a buffer. The buffer must have been acquired with 368 * dequeueBuffer first. 369 * 370 * Returns 0 on success or -errno on error. 371 */ 372 int (*lockBuffer)(struct ANativeWindow* window, 373 struct ANativeWindowBuffer* buffer); 374 /* 375 * Hook called by EGL when modifications to the render buffer are done. 376 * This unlocks and post the buffer. 377 * 378 * The window holds a reference to the buffer between dequeueBuffer and 379 * either queueBuffer or cancelBuffer, so clients only need their own 380 * reference if they might use the buffer after queueing or canceling it. 381 * Holding a reference to a buffer after queueing or canceling it is only 382 * allowed if a specific buffer count has been set. 383 * 384 * Buffers MUST be queued in the same order than they were dequeued. 385 * 386 * Returns 0 on success or -errno on error. 387 */ 388 int (*queueBuffer)(struct ANativeWindow* window, 389 struct ANativeWindowBuffer* buffer); 390 391 /* 392 * hook used to retrieve information about the native window. 393 * 394 * Returns 0 on success or -errno on error. 395 */ 396 int (*query)(const struct ANativeWindow* window, 397 int what, int* value); 398 399 /* 400 * hook used to perform various operations on the surface. 401 * (*perform)() is a generic mechanism to add functionality to 402 * ANativeWindow while keeping backward binary compatibility. 403 * 404 * DO NOT CALL THIS HOOK DIRECTLY. Instead, use the helper functions 405 * defined below. 406 * 407 * (*perform)() returns -ENOENT if the 'what' parameter is not supported 408 * by the surface's implementation. 409 * 410 * The valid operations are: 411 * NATIVE_WINDOW_SET_USAGE 412 * NATIVE_WINDOW_CONNECT (deprecated) 413 * NATIVE_WINDOW_DISCONNECT (deprecated) 414 * NATIVE_WINDOW_SET_CROP 415 * NATIVE_WINDOW_SET_BUFFER_COUNT 416 * NATIVE_WINDOW_SET_BUFFERS_GEOMETRY (deprecated) 417 * NATIVE_WINDOW_SET_BUFFERS_TRANSFORM 418 * NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 419 * NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS 420 * NATIVE_WINDOW_SET_BUFFERS_FORMAT 421 * NATIVE_WINDOW_SET_SCALING_MODE 422 * NATIVE_WINDOW_LOCK (private) 423 * NATIVE_WINDOW_UNLOCK_AND_POST (private) 424 * NATIVE_WINDOW_API_CONNECT (private) 425 * NATIVE_WINDOW_API_DISCONNECT (private) 426 * NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS (private) 427 * 428 */ 429 430 int (*perform)(struct ANativeWindow* window, 431 int operation, ... ); 432 433 /* 434 * Hook used to cancel a buffer that has been dequeued. 435 * No synchronization is performed between dequeue() and cancel(), so 436 * either external synchronization is needed, or these functions must be 437 * called from the same thread. 438 * 439 * The window holds a reference to the buffer between dequeueBuffer and 440 * either queueBuffer or cancelBuffer, so clients only need their own 441 * reference if they might use the buffer after queueing or canceling it. 442 * Holding a reference to a buffer after queueing or canceling it is only 443 * allowed if a specific buffer count has been set. 444 */ 445 int (*cancelBuffer)(struct ANativeWindow* window, 446 struct ANativeWindowBuffer* buffer); 447 448 449 void* reserved_proc[2]; 450}; 451 452 /* Backwards compatibility: use ANativeWindow (struct ANativeWindow in C). 453 * android_native_window_t is deprecated. 454 */ 455typedef struct ANativeWindow ANativeWindow; 456typedef struct ANativeWindow android_native_window_t; 457 458/* 459 * native_window_set_usage(..., usage) 460 * Sets the intended usage flags for the next buffers 461 * acquired with (*lockBuffer)() and on. 462 * By default (if this function is never called), a usage of 463 * GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE 464 * is assumed. 465 * Calling this function will usually cause following buffers to be 466 * reallocated. 467 */ 468 469static inline int native_window_set_usage( 470 struct ANativeWindow* window, int usage) 471{ 472 return window->perform(window, NATIVE_WINDOW_SET_USAGE, usage); 473} 474 475/* deprecated. Always returns 0. Don't call. */ 476static inline int native_window_connect( 477 struct ANativeWindow* window, int api) { 478 return 0; 479} 480 481/* deprecated. Always returns 0. Don't call. */ 482static inline int native_window_disconnect( 483 struct ANativeWindow* window, int api) { 484 return 0; 485} 486 487/* 488 * native_window_set_crop(..., crop) 489 * Sets which region of the next queued buffers needs to be considered. 490 * A buffer's crop region is scaled to match the surface's size. 491 * 492 * The specified crop region applies to all buffers queued after it is called. 493 * 494 * if 'crop' is NULL, subsequently queued buffers won't be cropped. 495 * 496 * An error is returned if for instance the crop region is invalid, 497 * out of the buffer's bound or if the window is invalid. 498 */ 499static inline int native_window_set_crop( 500 struct ANativeWindow* window, 501 android_native_rect_t const * crop) 502{ 503 return window->perform(window, NATIVE_WINDOW_SET_CROP, crop); 504} 505 506/* 507 * native_window_set_buffer_count(..., count) 508 * Sets the number of buffers associated with this native window. 509 */ 510static inline int native_window_set_buffer_count( 511 struct ANativeWindow* window, 512 size_t bufferCount) 513{ 514 return window->perform(window, NATIVE_WINDOW_SET_BUFFER_COUNT, bufferCount); 515} 516 517/* 518 * native_window_set_buffers_geometry(..., int w, int h, int format) 519 * All buffers dequeued after this call will have the dimensions and format 520 * specified. A successful call to this function has the same effect as calling 521 * native_window_set_buffers_size and native_window_set_buffers_format. 522 * 523 * XXX: This function is deprecated. The native_window_set_buffers_dimensions 524 * and native_window_set_buffers_format functions should be used instead. 525 */ 526static inline int native_window_set_buffers_geometry( 527 struct ANativeWindow* window, 528 int w, int h, int format) 529{ 530 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_GEOMETRY, 531 w, h, format); 532} 533 534/* 535 * native_window_set_buffers_dimensions(..., int w, int h) 536 * All buffers dequeued after this call will have the dimensions specified. 537 * In particular, all buffers will have a fixed-size, independent from the 538 * native-window size. They will be scaled according to the scaling mode 539 * (see native_window_set_scaling_mode) upon window composition. 540 * 541 * If w and h are 0, the normal behavior is restored. That is, dequeued buffers 542 * following this call will be sized to match the window's size. 543 * 544 * Calling this function will reset the window crop to a NULL value, which 545 * disables cropping of the buffers. 546 */ 547static inline int native_window_set_buffers_dimensions( 548 struct ANativeWindow* window, 549 int w, int h) 550{ 551 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS, 552 w, h); 553} 554 555/* 556 * native_window_set_buffers_user_dimensions(..., int w, int h) 557 * 558 * Sets the user buffer size for the window, which overrides the 559 * window's size. All buffers dequeued after this call will have the 560 * dimensions specified unless overridden by 561 * native_window_set_buffers_dimensions. All buffers will have a 562 * fixed-size, independent from the native-window size. They will be 563 * scaled according to the scaling mode (see 564 * native_window_set_scaling_mode) upon window composition. 565 * 566 * If w and h are 0, the normal behavior is restored. That is, the 567 * default buffer size will match the windows's size. 568 * 569 * Calling this function will reset the window crop to a NULL value, which 570 * disables cropping of the buffers. 571 */ 572static inline int native_window_set_buffers_user_dimensions( 573 struct ANativeWindow* window, 574 int w, int h) 575{ 576 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS, 577 w, h); 578} 579 580/* 581 * native_window_set_buffers_format(..., int format) 582 * All buffers dequeued after this call will have the format specified. 583 * 584 * If the specified format is 0, the default buffer format will be used. 585 */ 586static inline int native_window_set_buffers_format( 587 struct ANativeWindow* window, 588 int format) 589{ 590 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_FORMAT, format); 591} 592 593/* 594 * native_window_set_buffers_transform(..., int transform) 595 * All buffers queued after this call will be displayed transformed according 596 * to the transform parameter specified. 597 */ 598static inline int native_window_set_buffers_transform( 599 struct ANativeWindow* window, 600 int transform) 601{ 602 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TRANSFORM, 603 transform); 604} 605 606/* 607 * native_window_set_buffers_timestamp(..., int64_t timestamp) 608 * All buffers queued after this call will be associated with the timestamp 609 * parameter specified. If the timestamp is set to NATIVE_WINDOW_TIMESTAMP_AUTO 610 * (the default), timestamps will be generated automatically when queueBuffer is 611 * called. The timestamp is measured in nanoseconds, and is normally monotonically 612 * increasing. The timestamp should be unaffected by time-of-day adjustments, 613 * and for a camera should be strictly monotonic but for a media player may be 614 * reset when the position is set. 615 */ 616static inline int native_window_set_buffers_timestamp( 617 struct ANativeWindow* window, 618 int64_t timestamp) 619{ 620 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP, 621 timestamp); 622} 623 624/* 625 * native_window_set_scaling_mode(..., int mode) 626 * All buffers queued after this call will be associated with the scaling mode 627 * specified. 628 */ 629static inline int native_window_set_scaling_mode( 630 struct ANativeWindow* window, 631 int mode) 632{ 633 return window->perform(window, NATIVE_WINDOW_SET_SCALING_MODE, 634 mode); 635} 636 637 638/* 639 * native_window_api_connect(..., int api) 640 * connects an API to this window. only one API can be connected at a time. 641 * Returns -EINVAL if for some reason the window cannot be connected, which 642 * can happen if it's connected to some other API. 643 */ 644static inline int native_window_api_connect( 645 struct ANativeWindow* window, int api) 646{ 647 return window->perform(window, NATIVE_WINDOW_API_CONNECT, api); 648} 649 650/* 651 * native_window_api_disconnect(..., int api) 652 * disconnect the API from this window. 653 * An error is returned if for instance the window wasn't connected in the 654 * first place. 655 */ 656static inline int native_window_api_disconnect( 657 struct ANativeWindow* window, int api) 658{ 659 return window->perform(window, NATIVE_WINDOW_API_DISCONNECT, api); 660} 661 662 663__END_DECLS 664 665#endif /* SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H */ 666