window.h revision c36cc3b59879b0c46aea81b6ee746c40c591abf6
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 overridden 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 * Boolean that indicates whether the consumer is running more than 219 * one buffer behind the producer. 220 */ 221 NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND = 9 222}; 223 224/* Valid operations for the (*perform)() hook. 225 * 226 * Values marked as 'deprecated' are supported, but have been superceded by 227 * other functionality. 228 * 229 * Values marked as 'private' should be considered private to the framework. 230 * HAL implementation code with access to an ANativeWindow should not use these, 231 * as it may not interact properly with the framework's use of the 232 * ANativeWindow. 233 */ 234enum { 235 NATIVE_WINDOW_SET_USAGE = 0, 236 NATIVE_WINDOW_CONNECT = 1, /* deprecated */ 237 NATIVE_WINDOW_DISCONNECT = 2, /* deprecated */ 238 NATIVE_WINDOW_SET_CROP = 3, /* private */ 239 NATIVE_WINDOW_SET_BUFFER_COUNT = 4, 240 NATIVE_WINDOW_SET_BUFFERS_GEOMETRY = 5, /* deprecated */ 241 NATIVE_WINDOW_SET_BUFFERS_TRANSFORM = 6, 242 NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP = 7, 243 NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS = 8, 244 NATIVE_WINDOW_SET_BUFFERS_FORMAT = 9, 245 NATIVE_WINDOW_SET_SCALING_MODE = 10, /* private */ 246 NATIVE_WINDOW_LOCK = 11, /* private */ 247 NATIVE_WINDOW_UNLOCK_AND_POST = 12, /* private */ 248 NATIVE_WINDOW_API_CONNECT = 13, /* private */ 249 NATIVE_WINDOW_API_DISCONNECT = 14, /* private */ 250 NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS = 15, /* private */ 251 NATIVE_WINDOW_SET_ACTIVE_RECT = 16, /* private */ 252}; 253 254/* parameter for NATIVE_WINDOW_[API_][DIS]CONNECT */ 255enum { 256 /* Buffers will be queued by EGL via eglSwapBuffers after being filled using 257 * OpenGL ES. 258 */ 259 NATIVE_WINDOW_API_EGL = 1, 260 261 /* Buffers will be queued after being filled using the CPU 262 */ 263 NATIVE_WINDOW_API_CPU = 2, 264 265 /* Buffers will be queued by Stagefright after being filled by a video 266 * decoder. The video decoder can either be a software or hardware decoder. 267 */ 268 NATIVE_WINDOW_API_MEDIA = 3, 269 270 /* Buffers will be queued by the the camera HAL. 271 */ 272 NATIVE_WINDOW_API_CAMERA = 4, 273}; 274 275/* parameter for NATIVE_WINDOW_SET_BUFFERS_TRANSFORM */ 276enum { 277 /* flip source image horizontally */ 278 NATIVE_WINDOW_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H , 279 /* flip source image vertically */ 280 NATIVE_WINDOW_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V, 281 /* rotate source image 90 degrees clock-wise */ 282 NATIVE_WINDOW_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90, 283 /* rotate source image 180 degrees */ 284 NATIVE_WINDOW_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180, 285 /* rotate source image 270 degrees clock-wise */ 286 NATIVE_WINDOW_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270, 287}; 288 289/* parameter for NATIVE_WINDOW_SET_SCALING_MODE */ 290enum { 291 /* the window content is not updated (frozen) until a buffer of 292 * the window size is received (enqueued) 293 */ 294 NATIVE_WINDOW_SCALING_MODE_FREEZE = 0, 295 /* the buffer is scaled in both dimensions to match the window size */ 296 NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW = 1, 297 /* the buffer is scaled uniformly such that the smaller dimension 298 * of the buffer matches the window size (cropping in the process) 299 */ 300 NATIVE_WINDOW_SCALING_MODE_SCALE_CROP = 2, 301}; 302 303/* values returned by the NATIVE_WINDOW_CONCRETE_TYPE query */ 304enum { 305 NATIVE_WINDOW_FRAMEBUFFER = 0, /* FramebufferNativeWindow */ 306 NATIVE_WINDOW_SURFACE = 1, /* Surface */ 307 NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT = 2, /* SurfaceTextureClient */ 308}; 309 310/* parameter for NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 311 * 312 * Special timestamp value to indicate that timestamps should be auto-generated 313 * by the native window when queueBuffer is called. This is equal to INT64_MIN, 314 * defined directly to avoid problems with C99/C++ inclusion of stdint.h. 315 */ 316static const int64_t NATIVE_WINDOW_TIMESTAMP_AUTO = (-9223372036854775807LL-1); 317 318struct ANativeWindow 319{ 320#ifdef __cplusplus 321 ANativeWindow() 322 : flags(0), minSwapInterval(0), maxSwapInterval(0), xdpi(0), ydpi(0) 323 { 324 common.magic = ANDROID_NATIVE_WINDOW_MAGIC; 325 common.version = sizeof(ANativeWindow); 326 memset(common.reserved, 0, sizeof(common.reserved)); 327 } 328 329 /* Implement the methods that sp<ANativeWindow> expects so that it 330 can be used to automatically refcount ANativeWindow's. */ 331 void incStrong(const void* id) const { 332 common.incRef(const_cast<android_native_base_t*>(&common)); 333 } 334 void decStrong(const void* id) const { 335 common.decRef(const_cast<android_native_base_t*>(&common)); 336 } 337#endif 338 339 struct android_native_base_t common; 340 341 /* flags describing some attributes of this surface or its updater */ 342 const uint32_t flags; 343 344 /* min swap interval supported by this updated */ 345 const int minSwapInterval; 346 347 /* max swap interval supported by this updated */ 348 const int maxSwapInterval; 349 350 /* horizontal and vertical resolution in DPI */ 351 const float xdpi; 352 const float ydpi; 353 354 /* Some storage reserved for the OEM's driver. */ 355 intptr_t oem[4]; 356 357 /* 358 * Set the swap interval for this surface. 359 * 360 * Returns 0 on success or -errno on error. 361 */ 362 int (*setSwapInterval)(struct ANativeWindow* window, 363 int interval); 364 365 /* 366 * Hook called by EGL to acquire a buffer. After this call, the buffer 367 * is not locked, so its content cannot be modified. This call may block if 368 * no buffers are available. 369 * 370 * The window holds a reference to the buffer between dequeueBuffer and 371 * either queueBuffer or cancelBuffer, so clients only need their own 372 * reference if they might use the buffer after queueing or canceling it. 373 * Holding a reference to a buffer after queueing or canceling it is only 374 * allowed if a specific buffer count has been set. 375 * 376 * Returns 0 on success or -errno on error. 377 */ 378 int (*dequeueBuffer)(struct ANativeWindow* window, 379 struct ANativeWindowBuffer** buffer); 380 381 /* 382 * hook called by EGL to lock a buffer. This MUST be called before modifying 383 * the content of a buffer. The buffer must have been acquired with 384 * dequeueBuffer first. 385 * 386 * Returns 0 on success or -errno on error. 387 */ 388 int (*lockBuffer)(struct ANativeWindow* window, 389 struct ANativeWindowBuffer* buffer); 390 /* 391 * Hook called by EGL when modifications to the render buffer are done. 392 * This unlocks and post the buffer. 393 * 394 * The window holds a reference to the buffer between dequeueBuffer and 395 * either queueBuffer or cancelBuffer, so clients only need their own 396 * reference if they might use the buffer after queueing or canceling it. 397 * Holding a reference to a buffer after queueing or canceling it is only 398 * allowed if a specific buffer count has been set. 399 * 400 * Buffers MUST be queued in the same order than they were dequeued. 401 * 402 * Returns 0 on success or -errno on error. 403 */ 404 int (*queueBuffer)(struct ANativeWindow* window, 405 struct ANativeWindowBuffer* buffer); 406 407 /* 408 * hook used to retrieve information about the native window. 409 * 410 * Returns 0 on success or -errno on error. 411 */ 412 int (*query)(const struct ANativeWindow* window, 413 int what, int* value); 414 415 /* 416 * hook used to perform various operations on the surface. 417 * (*perform)() is a generic mechanism to add functionality to 418 * ANativeWindow while keeping backward binary compatibility. 419 * 420 * DO NOT CALL THIS HOOK DIRECTLY. Instead, use the helper functions 421 * defined below. 422 * 423 * (*perform)() returns -ENOENT if the 'what' parameter is not supported 424 * by the surface's implementation. 425 * 426 * The valid operations are: 427 * NATIVE_WINDOW_SET_USAGE 428 * NATIVE_WINDOW_CONNECT (deprecated) 429 * NATIVE_WINDOW_DISCONNECT (deprecated) 430 * NATIVE_WINDOW_SET_CROP 431 * NATIVE_WINDOW_SET_BUFFER_COUNT 432 * NATIVE_WINDOW_SET_BUFFERS_GEOMETRY (deprecated) 433 * NATIVE_WINDOW_SET_BUFFERS_TRANSFORM 434 * NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 435 * NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS 436 * NATIVE_WINDOW_SET_BUFFERS_FORMAT 437 * NATIVE_WINDOW_SET_SCALING_MODE 438 * NATIVE_WINDOW_LOCK (private) 439 * NATIVE_WINDOW_UNLOCK_AND_POST (private) 440 * NATIVE_WINDOW_API_CONNECT (private) 441 * NATIVE_WINDOW_API_DISCONNECT (private) 442 * NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS (private) 443 * 444 */ 445 446 int (*perform)(struct ANativeWindow* window, 447 int operation, ... ); 448 449 /* 450 * Hook used to cancel a buffer that has been dequeued. 451 * No synchronization is performed between dequeue() and cancel(), so 452 * either external synchronization is needed, or these functions must be 453 * called from the same thread. 454 * 455 * The window holds a reference to the buffer between dequeueBuffer and 456 * either queueBuffer or cancelBuffer, so clients only need their own 457 * reference if they might use the buffer after queueing or canceling it. 458 * Holding a reference to a buffer after queueing or canceling it is only 459 * allowed if a specific buffer count has been set. 460 */ 461 int (*cancelBuffer)(struct ANativeWindow* window, 462 struct ANativeWindowBuffer* buffer); 463 464 465 void* reserved_proc[2]; 466}; 467 468 /* Backwards compatibility: use ANativeWindow (struct ANativeWindow in C). 469 * android_native_window_t is deprecated. 470 */ 471typedef struct ANativeWindow ANativeWindow; 472typedef struct ANativeWindow android_native_window_t; 473 474/* 475 * native_window_set_usage(..., usage) 476 * Sets the intended usage flags for the next buffers 477 * acquired with (*lockBuffer)() and on. 478 * By default (if this function is never called), a usage of 479 * GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE 480 * is assumed. 481 * Calling this function will usually cause following buffers to be 482 * reallocated. 483 */ 484 485static inline int native_window_set_usage( 486 struct ANativeWindow* window, int usage) 487{ 488 return window->perform(window, NATIVE_WINDOW_SET_USAGE, usage); 489} 490 491/* deprecated. Always returns 0. Don't call. */ 492static inline int native_window_connect( 493 struct ANativeWindow* window, int api) { 494 return 0; 495} 496 497/* deprecated. Always returns 0. Don't call. */ 498static inline int native_window_disconnect( 499 struct ANativeWindow* window, int api) { 500 return 0; 501} 502 503/* 504 * native_window_set_crop(..., crop) 505 * Sets which region of the next queued buffers needs to be considered. 506 * A buffer's crop region is scaled to match the surface's size. 507 * 508 * The specified crop region applies to all buffers queued after it is called. 509 * 510 * if 'crop' is NULL, subsequently queued buffers won't be cropped. 511 * 512 * An error is returned if for instance the crop region is invalid, 513 * out of the buffer's bound or if the window is invalid. 514 */ 515static inline int native_window_set_crop( 516 struct ANativeWindow* window, 517 android_native_rect_t const * crop) 518{ 519 return window->perform(window, NATIVE_WINDOW_SET_CROP, crop); 520} 521 522/* 523 * native_window_set_active_rect(..., active_rect) 524 * Sets the region of future queued buffers that are 'active'. Pixels outside 525 * this 'active' region are considered to be completely transparent regardless 526 * of the pixel values in the buffer. The active_rect argument specifies the 527 * active rectangle in buffer pixel coordinates. 528 * 529 * The specified active rectangle applies to all buffers queued after it is 530 * called. 531 * 532 * An error is returned if for instance the crop region is invalid, 533 * out of the buffer's bound or if the window is invalid. 534 */ 535static inline int native_window_set_active_rect( 536 struct ANativeWindow* window, 537 android_native_rect_t const * active_rect) 538{ 539 return window->perform(window, NATIVE_WINDOW_SET_ACTIVE_RECT, active_rect); 540} 541 542/* 543 * native_window_set_buffer_count(..., count) 544 * Sets the number of buffers associated with this native window. 545 */ 546static inline int native_window_set_buffer_count( 547 struct ANativeWindow* window, 548 size_t bufferCount) 549{ 550 return window->perform(window, NATIVE_WINDOW_SET_BUFFER_COUNT, bufferCount); 551} 552 553/* 554 * native_window_set_buffers_geometry(..., int w, int h, int format) 555 * All buffers dequeued after this call will have the dimensions and format 556 * specified. A successful call to this function has the same effect as calling 557 * native_window_set_buffers_size and native_window_set_buffers_format. 558 * 559 * XXX: This function is deprecated. The native_window_set_buffers_dimensions 560 * and native_window_set_buffers_format functions should be used instead. 561 */ 562static inline int native_window_set_buffers_geometry( 563 struct ANativeWindow* window, 564 int w, int h, int format) 565{ 566 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_GEOMETRY, 567 w, h, format); 568} 569 570/* 571 * native_window_set_buffers_dimensions(..., int w, int h) 572 * All buffers dequeued after this call will have the dimensions specified. 573 * In particular, all buffers will have a fixed-size, independent from the 574 * native-window size. They will be scaled according to the scaling mode 575 * (see native_window_set_scaling_mode) upon window composition. 576 * 577 * If w and h are 0, the normal behavior is restored. That is, dequeued buffers 578 * following this call will be sized to match the window's size. 579 * 580 * Calling this function will reset the window crop to a NULL value, which 581 * disables cropping of the buffers. 582 */ 583static inline int native_window_set_buffers_dimensions( 584 struct ANativeWindow* window, 585 int w, int h) 586{ 587 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS, 588 w, h); 589} 590 591/* 592 * native_window_set_buffers_user_dimensions(..., int w, int h) 593 * 594 * Sets the user buffer size for the window, which overrides the 595 * window's size. All buffers dequeued after this call will have the 596 * dimensions specified unless overridden by 597 * native_window_set_buffers_dimensions. All buffers will have a 598 * fixed-size, independent from the native-window size. They will be 599 * scaled according to the scaling mode (see 600 * native_window_set_scaling_mode) upon window composition. 601 * 602 * If w and h are 0, the normal behavior is restored. That is, the 603 * default buffer size will match the windows's size. 604 * 605 * Calling this function will reset the window crop to a NULL value, which 606 * disables cropping of the buffers. 607 */ 608static inline int native_window_set_buffers_user_dimensions( 609 struct ANativeWindow* window, 610 int w, int h) 611{ 612 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS, 613 w, h); 614} 615 616/* 617 * native_window_set_buffers_format(..., int format) 618 * All buffers dequeued after this call will have the format specified. 619 * 620 * If the specified format is 0, the default buffer format will be used. 621 */ 622static inline int native_window_set_buffers_format( 623 struct ANativeWindow* window, 624 int format) 625{ 626 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_FORMAT, format); 627} 628 629/* 630 * native_window_set_buffers_transform(..., int transform) 631 * All buffers queued after this call will be displayed transformed according 632 * to the transform parameter specified. 633 */ 634static inline int native_window_set_buffers_transform( 635 struct ANativeWindow* window, 636 int transform) 637{ 638 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TRANSFORM, 639 transform); 640} 641 642/* 643 * native_window_set_buffers_timestamp(..., int64_t timestamp) 644 * All buffers queued after this call will be associated with the timestamp 645 * parameter specified. If the timestamp is set to NATIVE_WINDOW_TIMESTAMP_AUTO 646 * (the default), timestamps will be generated automatically when queueBuffer is 647 * called. The timestamp is measured in nanoseconds, and is normally monotonically 648 * increasing. The timestamp should be unaffected by time-of-day adjustments, 649 * and for a camera should be strictly monotonic but for a media player may be 650 * reset when the position is set. 651 */ 652static inline int native_window_set_buffers_timestamp( 653 struct ANativeWindow* window, 654 int64_t timestamp) 655{ 656 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP, 657 timestamp); 658} 659 660/* 661 * native_window_set_scaling_mode(..., int mode) 662 * All buffers queued after this call will be associated with the scaling mode 663 * specified. 664 */ 665static inline int native_window_set_scaling_mode( 666 struct ANativeWindow* window, 667 int mode) 668{ 669 return window->perform(window, NATIVE_WINDOW_SET_SCALING_MODE, 670 mode); 671} 672 673/* 674 * native_window_api_connect(..., int api) 675 * connects an API to this window. only one API can be connected at a time. 676 * Returns -EINVAL if for some reason the window cannot be connected, which 677 * can happen if it's connected to some other API. 678 */ 679static inline int native_window_api_connect( 680 struct ANativeWindow* window, int api) 681{ 682 return window->perform(window, NATIVE_WINDOW_API_CONNECT, api); 683} 684 685/* 686 * native_window_api_disconnect(..., int api) 687 * disconnect the API from this window. 688 * An error is returned if for instance the window wasn't connected in the 689 * first place. 690 */ 691static inline int native_window_api_disconnect( 692 struct ANativeWindow* window, int api) 693{ 694 return window->perform(window, NATIVE_WINDOW_API_DISCONNECT, api); 695} 696 697 698__END_DECLS 699 700#endif /* SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H */ 701