window.h revision fb1ee571446c13ad698e91f13fd4e0274a37d4d7
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. 219 * 220 * Values marked as 'deprecated' are supported, but have been superceded by 221 * other functionality. 222 * 223 * Values marked as 'private' should be considered private to the framework. 224 * HAL implementation code with access to an ANativeWindow should not use these, 225 * as it may not interact properly with the framework's use of the 226 * ANativeWindow. 227 */ 228enum { 229 NATIVE_WINDOW_SET_USAGE = 0, 230 NATIVE_WINDOW_CONNECT = 1, /* deprecated */ 231 NATIVE_WINDOW_DISCONNECT = 2, /* deprecated */ 232 NATIVE_WINDOW_SET_CROP = 3, /* private */ 233 NATIVE_WINDOW_SET_BUFFER_COUNT = 4, 234 NATIVE_WINDOW_SET_BUFFERS_GEOMETRY = 5, /* deprecated */ 235 NATIVE_WINDOW_SET_BUFFERS_TRANSFORM = 6, 236 NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP = 7, 237 NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS = 8, 238 NATIVE_WINDOW_SET_BUFFERS_FORMAT = 9, 239 NATIVE_WINDOW_SET_SCALING_MODE = 10, /* private */ 240 NATIVE_WINDOW_LOCK = 11, /* private */ 241 NATIVE_WINDOW_UNLOCK_AND_POST = 12, /* private */ 242 NATIVE_WINDOW_API_CONNECT = 13, /* private */ 243 NATIVE_WINDOW_API_DISCONNECT = 14, /* private */ 244 NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS = 15, /* private */ 245 NATIVE_WINDOW_SET_ACTIVE_RECT = 16, /* private */ 246}; 247 248/* parameter for NATIVE_WINDOW_[API_][DIS]CONNECT */ 249enum { 250 /* Buffers will be queued by EGL via eglSwapBuffers after being filled using 251 * OpenGL ES. 252 */ 253 NATIVE_WINDOW_API_EGL = 1, 254 255 /* Buffers will be queued after being filled using the CPU 256 */ 257 NATIVE_WINDOW_API_CPU = 2, 258 259 /* Buffers will be queued by Stagefright after being filled by a video 260 * decoder. The video decoder can either be a software or hardware decoder. 261 */ 262 NATIVE_WINDOW_API_MEDIA = 3, 263 264 /* Buffers will be queued by the the camera HAL. 265 */ 266 NATIVE_WINDOW_API_CAMERA = 4, 267}; 268 269/* parameter for NATIVE_WINDOW_SET_BUFFERS_TRANSFORM */ 270enum { 271 /* flip source image horizontally */ 272 NATIVE_WINDOW_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H , 273 /* flip source image vertically */ 274 NATIVE_WINDOW_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V, 275 /* rotate source image 90 degrees clock-wise */ 276 NATIVE_WINDOW_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90, 277 /* rotate source image 180 degrees */ 278 NATIVE_WINDOW_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180, 279 /* rotate source image 270 degrees clock-wise */ 280 NATIVE_WINDOW_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270, 281}; 282 283/* parameter for NATIVE_WINDOW_SET_SCALING_MODE */ 284enum { 285 /* the window content is not updated (frozen) until a buffer of 286 * the window size is received (enqueued) 287 */ 288 NATIVE_WINDOW_SCALING_MODE_FREEZE = 0, 289 /* the buffer is scaled in both dimensions to match the window size */ 290 NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW = 1, 291 /* the buffer is scaled uniformly such that the smaller dimension 292 * of the buffer matches the window size (cropping in the process) 293 */ 294 NATIVE_WINDOW_SCALING_MODE_SCALE_CROP = 2, 295}; 296 297/* values returned by the NATIVE_WINDOW_CONCRETE_TYPE query */ 298enum { 299 NATIVE_WINDOW_FRAMEBUFFER = 0, /* FramebufferNativeWindow */ 300 NATIVE_WINDOW_SURFACE = 1, /* Surface */ 301 NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT = 2, /* SurfaceTextureClient */ 302}; 303 304/* parameter for NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 305 * 306 * Special timestamp value to indicate that timestamps should be auto-generated 307 * by the native window when queueBuffer is called. This is equal to INT64_MIN, 308 * defined directly to avoid problems with C99/C++ inclusion of stdint.h. 309 */ 310static const int64_t NATIVE_WINDOW_TIMESTAMP_AUTO = (-9223372036854775807LL-1); 311 312struct ANativeWindow 313{ 314#ifdef __cplusplus 315 ANativeWindow() 316 : flags(0), minSwapInterval(0), maxSwapInterval(0), xdpi(0), ydpi(0) 317 { 318 common.magic = ANDROID_NATIVE_WINDOW_MAGIC; 319 common.version = sizeof(ANativeWindow); 320 memset(common.reserved, 0, sizeof(common.reserved)); 321 } 322 323 /* Implement the methods that sp<ANativeWindow> expects so that it 324 can be used to automatically refcount ANativeWindow's. */ 325 void incStrong(const void* id) const { 326 common.incRef(const_cast<android_native_base_t*>(&common)); 327 } 328 void decStrong(const void* id) const { 329 common.decRef(const_cast<android_native_base_t*>(&common)); 330 } 331#endif 332 333 struct android_native_base_t common; 334 335 /* flags describing some attributes of this surface or its updater */ 336 const uint32_t flags; 337 338 /* min swap interval supported by this updated */ 339 const int minSwapInterval; 340 341 /* max swap interval supported by this updated */ 342 const int maxSwapInterval; 343 344 /* horizontal and vertical resolution in DPI */ 345 const float xdpi; 346 const float ydpi; 347 348 /* Some storage reserved for the OEM's driver. */ 349 intptr_t oem[4]; 350 351 /* 352 * Set the swap interval for this surface. 353 * 354 * Returns 0 on success or -errno on error. 355 */ 356 int (*setSwapInterval)(struct ANativeWindow* window, 357 int interval); 358 359 /* 360 * Hook called by EGL to acquire a buffer. After this call, the buffer 361 * is not locked, so its content cannot be modified. This call may block if 362 * no buffers are available. 363 * 364 * The window holds a reference to the buffer between dequeueBuffer and 365 * either queueBuffer or cancelBuffer, so clients only need their own 366 * reference if they might use the buffer after queueing or canceling it. 367 * Holding a reference to a buffer after queueing or canceling it is only 368 * allowed if a specific buffer count has been set. 369 * 370 * Returns 0 on success or -errno on error. 371 */ 372 int (*dequeueBuffer)(struct ANativeWindow* window, 373 struct ANativeWindowBuffer** buffer); 374 375 /* 376 * hook called by EGL to lock a buffer. This MUST be called before modifying 377 * the content of a buffer. The buffer must have been acquired with 378 * dequeueBuffer first. 379 * 380 * Returns 0 on success or -errno on error. 381 */ 382 int (*lockBuffer)(struct ANativeWindow* window, 383 struct ANativeWindowBuffer* buffer); 384 /* 385 * Hook called by EGL when modifications to the render buffer are done. 386 * This unlocks and post the buffer. 387 * 388 * The window holds a reference to the buffer between dequeueBuffer and 389 * either queueBuffer or cancelBuffer, so clients only need their own 390 * reference if they might use the buffer after queueing or canceling it. 391 * Holding a reference to a buffer after queueing or canceling it is only 392 * allowed if a specific buffer count has been set. 393 * 394 * Buffers MUST be queued in the same order than they were dequeued. 395 * 396 * Returns 0 on success or -errno on error. 397 */ 398 int (*queueBuffer)(struct ANativeWindow* window, 399 struct ANativeWindowBuffer* buffer); 400 401 /* 402 * hook used to retrieve information about the native window. 403 * 404 * Returns 0 on success or -errno on error. 405 */ 406 int (*query)(const struct ANativeWindow* window, 407 int what, int* value); 408 409 /* 410 * hook used to perform various operations on the surface. 411 * (*perform)() is a generic mechanism to add functionality to 412 * ANativeWindow while keeping backward binary compatibility. 413 * 414 * DO NOT CALL THIS HOOK DIRECTLY. Instead, use the helper functions 415 * defined below. 416 * 417 * (*perform)() returns -ENOENT if the 'what' parameter is not supported 418 * by the surface's implementation. 419 * 420 * The valid operations are: 421 * NATIVE_WINDOW_SET_USAGE 422 * NATIVE_WINDOW_CONNECT (deprecated) 423 * NATIVE_WINDOW_DISCONNECT (deprecated) 424 * NATIVE_WINDOW_SET_CROP 425 * NATIVE_WINDOW_SET_BUFFER_COUNT 426 * NATIVE_WINDOW_SET_BUFFERS_GEOMETRY (deprecated) 427 * NATIVE_WINDOW_SET_BUFFERS_TRANSFORM 428 * NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 429 * NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS 430 * NATIVE_WINDOW_SET_BUFFERS_FORMAT 431 * NATIVE_WINDOW_SET_SCALING_MODE 432 * NATIVE_WINDOW_LOCK (private) 433 * NATIVE_WINDOW_UNLOCK_AND_POST (private) 434 * NATIVE_WINDOW_API_CONNECT (private) 435 * NATIVE_WINDOW_API_DISCONNECT (private) 436 * NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS (private) 437 * 438 */ 439 440 int (*perform)(struct ANativeWindow* window, 441 int operation, ... ); 442 443 /* 444 * Hook used to cancel a buffer that has been dequeued. 445 * No synchronization is performed between dequeue() and cancel(), so 446 * either external synchronization is needed, or these functions must be 447 * called from the same thread. 448 * 449 * The window holds a reference to the buffer between dequeueBuffer and 450 * either queueBuffer or cancelBuffer, so clients only need their own 451 * reference if they might use the buffer after queueing or canceling it. 452 * Holding a reference to a buffer after queueing or canceling it is only 453 * allowed if a specific buffer count has been set. 454 */ 455 int (*cancelBuffer)(struct ANativeWindow* window, 456 struct ANativeWindowBuffer* buffer); 457 458 459 void* reserved_proc[2]; 460}; 461 462 /* Backwards compatibility: use ANativeWindow (struct ANativeWindow in C). 463 * android_native_window_t is deprecated. 464 */ 465typedef struct ANativeWindow ANativeWindow; 466typedef struct ANativeWindow android_native_window_t; 467 468/* 469 * native_window_set_usage(..., usage) 470 * Sets the intended usage flags for the next buffers 471 * acquired with (*lockBuffer)() and on. 472 * By default (if this function is never called), a usage of 473 * GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE 474 * is assumed. 475 * Calling this function will usually cause following buffers to be 476 * reallocated. 477 */ 478 479static inline int native_window_set_usage( 480 struct ANativeWindow* window, int usage) 481{ 482 return window->perform(window, NATIVE_WINDOW_SET_USAGE, usage); 483} 484 485/* deprecated. Always returns 0. Don't call. */ 486static inline int native_window_connect( 487 struct ANativeWindow* window, int api) { 488 return 0; 489} 490 491/* deprecated. Always returns 0. Don't call. */ 492static inline int native_window_disconnect( 493 struct ANativeWindow* window, int api) { 494 return 0; 495} 496 497/* 498 * native_window_set_crop(..., crop) 499 * Sets which region of the next queued buffers needs to be considered. 500 * A buffer's crop region is scaled to match the surface's size. 501 * 502 * The specified crop region applies to all buffers queued after it is called. 503 * 504 * if 'crop' is NULL, subsequently queued buffers won't be cropped. 505 * 506 * An error is returned if for instance the crop region is invalid, 507 * out of the buffer's bound or if the window is invalid. 508 */ 509static inline int native_window_set_crop( 510 struct ANativeWindow* window, 511 android_native_rect_t const * crop) 512{ 513 return window->perform(window, NATIVE_WINDOW_SET_CROP, crop); 514} 515 516/* 517 * native_window_set_active_rect(..., active_rect) 518 * Sets the region of future queued buffers that are 'active'. Pixels outside 519 * this 'active' region are considered to be completely transparent regardless 520 * of the pixel values in the buffer. The active_rect argument specifies the 521 * active rectangle in buffer pixel coordinates. 522 * 523 * The specified active rectangle applies to all buffers queued after it is 524 * called. 525 * 526 * An error is returned if for instance the crop region is invalid, 527 * out of the buffer's bound or if the window is invalid. 528 */ 529static inline int native_window_set_active_rect( 530 struct ANativeWindow* window, 531 android_native_rect_t const * active_rect) 532{ 533 return window->perform(window, NATIVE_WINDOW_SET_ACTIVE_RECT, active_rect); 534} 535 536/* 537 * native_window_set_buffer_count(..., count) 538 * Sets the number of buffers associated with this native window. 539 */ 540static inline int native_window_set_buffer_count( 541 struct ANativeWindow* window, 542 size_t bufferCount) 543{ 544 return window->perform(window, NATIVE_WINDOW_SET_BUFFER_COUNT, bufferCount); 545} 546 547/* 548 * native_window_set_buffers_geometry(..., int w, int h, int format) 549 * All buffers dequeued after this call will have the dimensions and format 550 * specified. A successful call to this function has the same effect as calling 551 * native_window_set_buffers_size and native_window_set_buffers_format. 552 * 553 * XXX: This function is deprecated. The native_window_set_buffers_dimensions 554 * and native_window_set_buffers_format functions should be used instead. 555 */ 556static inline int native_window_set_buffers_geometry( 557 struct ANativeWindow* window, 558 int w, int h, int format) 559{ 560 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_GEOMETRY, 561 w, h, format); 562} 563 564/* 565 * native_window_set_buffers_dimensions(..., int w, int h) 566 * All buffers dequeued after this call will have the dimensions specified. 567 * In particular, all buffers will have a fixed-size, independent from the 568 * native-window size. They will be scaled according to the scaling mode 569 * (see native_window_set_scaling_mode) upon window composition. 570 * 571 * If w and h are 0, the normal behavior is restored. That is, dequeued buffers 572 * following this call will be sized to match the window's size. 573 * 574 * Calling this function will reset the window crop to a NULL value, which 575 * disables cropping of the buffers. 576 */ 577static inline int native_window_set_buffers_dimensions( 578 struct ANativeWindow* window, 579 int w, int h) 580{ 581 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS, 582 w, h); 583} 584 585/* 586 * native_window_set_buffers_user_dimensions(..., int w, int h) 587 * 588 * Sets the user buffer size for the window, which overrides the 589 * window's size. All buffers dequeued after this call will have the 590 * dimensions specified unless overridden by 591 * native_window_set_buffers_dimensions. All buffers will have a 592 * fixed-size, independent from the native-window size. They will be 593 * scaled according to the scaling mode (see 594 * native_window_set_scaling_mode) upon window composition. 595 * 596 * If w and h are 0, the normal behavior is restored. That is, the 597 * default buffer size will match the windows's size. 598 * 599 * Calling this function will reset the window crop to a NULL value, which 600 * disables cropping of the buffers. 601 */ 602static inline int native_window_set_buffers_user_dimensions( 603 struct ANativeWindow* window, 604 int w, int h) 605{ 606 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS, 607 w, h); 608} 609 610/* 611 * native_window_set_buffers_format(..., int format) 612 * All buffers dequeued after this call will have the format specified. 613 * 614 * If the specified format is 0, the default buffer format will be used. 615 */ 616static inline int native_window_set_buffers_format( 617 struct ANativeWindow* window, 618 int format) 619{ 620 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_FORMAT, format); 621} 622 623/* 624 * native_window_set_buffers_transform(..., int transform) 625 * All buffers queued after this call will be displayed transformed according 626 * to the transform parameter specified. 627 */ 628static inline int native_window_set_buffers_transform( 629 struct ANativeWindow* window, 630 int transform) 631{ 632 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TRANSFORM, 633 transform); 634} 635 636/* 637 * native_window_set_buffers_timestamp(..., int64_t timestamp) 638 * All buffers queued after this call will be associated with the timestamp 639 * parameter specified. If the timestamp is set to NATIVE_WINDOW_TIMESTAMP_AUTO 640 * (the default), timestamps will be generated automatically when queueBuffer is 641 * called. The timestamp is measured in nanoseconds, and is normally monotonically 642 * increasing. The timestamp should be unaffected by time-of-day adjustments, 643 * and for a camera should be strictly monotonic but for a media player may be 644 * reset when the position is set. 645 */ 646static inline int native_window_set_buffers_timestamp( 647 struct ANativeWindow* window, 648 int64_t timestamp) 649{ 650 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP, 651 timestamp); 652} 653 654/* 655 * native_window_set_scaling_mode(..., int mode) 656 * All buffers queued after this call will be associated with the scaling mode 657 * specified. 658 */ 659static inline int native_window_set_scaling_mode( 660 struct ANativeWindow* window, 661 int mode) 662{ 663 return window->perform(window, NATIVE_WINDOW_SET_SCALING_MODE, 664 mode); 665} 666 667/* 668 * native_window_api_connect(..., int api) 669 * connects an API to this window. only one API can be connected at a time. 670 * Returns -EINVAL if for some reason the window cannot be connected, which 671 * can happen if it's connected to some other API. 672 */ 673static inline int native_window_api_connect( 674 struct ANativeWindow* window, int api) 675{ 676 return window->perform(window, NATIVE_WINDOW_API_CONNECT, api); 677} 678 679/* 680 * native_window_api_disconnect(..., int api) 681 * disconnect the API from this window. 682 * An error is returned if for instance the window wasn't connected in the 683 * first place. 684 */ 685static inline int native_window_api_disconnect( 686 struct ANativeWindow* window, int api) 687{ 688 return window->perform(window, NATIVE_WINDOW_API_DISCONNECT, api); 689} 690 691 692__END_DECLS 693 694#endif /* SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H */ 695