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 /*************************************************************************************************
18 *
19 * IMPORTANT:
20 *
21 * There is an old copy of this file in system/core/include/system/window.h, which exists only
22 * for backward source compatibility.
23 * But there are binaries out there as well, so this version of window.h must stay binary
24 * backward compatible with the one found in system/core.
25 *
26 *
27 * Source compatibility is also required for now, because this is how we're handling the
28 * transition from system/core/include (global include path) to nativewindow/include.
29 *
30 *************************************************************************************************/
31
32 #pragma once
33
34 #include <cutils/native_handle.h>
35 #include <errno.h>
36 #include <limits.h>
37 #include <stdbool.h>
38 #include <stdint.h>
39 #include <string.h>
40 #include <sys/cdefs.h>
41 #include <system/graphics.h>
42 #include <unistd.h>
43
44 // system/window.h is a superset of the vndk and apex apis
45 #include <apex/window.h>
46 #include <vndk/window.h>
47
48
49 #ifndef __UNUSED
50 #define __UNUSED __attribute__((__unused__))
51 #endif
52 #ifndef __deprecated
53 #define __deprecated __attribute__((__deprecated__))
54 #endif
55
56 __BEGIN_DECLS
57
58 /*****************************************************************************/
59
60 #define ANDROID_NATIVE_WINDOW_MAGIC ANDROID_NATIVE_MAKE_CONSTANT('_','w','n','d')
61
62 // ---------------------------------------------------------------------------
63
64 /* attributes queriable with query() */
65 enum {
66 NATIVE_WINDOW_WIDTH = 0,
67 NATIVE_WINDOW_HEIGHT = 1,
68 NATIVE_WINDOW_FORMAT = 2,
69
70 /* see ANativeWindowQuery in vndk/window.h */
71 NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS = ANATIVEWINDOW_QUERY_MIN_UNDEQUEUED_BUFFERS,
72
73 /* Check whether queueBuffer operations on the ANativeWindow send the buffer
74 * to the window compositor. The query sets the returned 'value' argument
75 * to 1 if the ANativeWindow DOES send queued buffers directly to the window
76 * compositor and 0 if the buffers do not go directly to the window
77 * compositor.
78 *
79 * This can be used to determine whether protected buffer content should be
80 * sent to the ANativeWindow. Note, however, that a result of 1 does NOT
81 * indicate that queued buffers will be protected from applications or users
82 * capturing their contents. If that behavior is desired then some other
83 * mechanism (e.g. the GRALLOC_USAGE_PROTECTED flag) should be used in
84 * conjunction with this query.
85 */
86 NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER = 4,
87
88 /* Get the concrete type of a ANativeWindow. See below for the list of
89 * possible return values.
90 *
91 * This query should not be used outside the Android framework and will
92 * likely be removed in the near future.
93 */
94 NATIVE_WINDOW_CONCRETE_TYPE = 5,
95
96 /*
97 * Default width and height of ANativeWindow buffers, these are the
98 * dimensions of the window buffers irrespective of the
99 * NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS call and match the native window
100 * size unless overridden by NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS.
101 */
102 NATIVE_WINDOW_DEFAULT_WIDTH = ANATIVEWINDOW_QUERY_DEFAULT_WIDTH,
103 NATIVE_WINDOW_DEFAULT_HEIGHT = ANATIVEWINDOW_QUERY_DEFAULT_HEIGHT,
104
105 /* see ANativeWindowQuery in vndk/window.h */
106 NATIVE_WINDOW_TRANSFORM_HINT = ANATIVEWINDOW_QUERY_TRANSFORM_HINT,
107
108 /*
109 * Boolean that indicates whether the consumer is running more than
110 * one buffer behind the producer.
111 */
112 NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND = 9,
113
114 /*
115 * The consumer gralloc usage bits currently set by the consumer.
116 * The values are defined in hardware/libhardware/include/gralloc.h.
117 */
118 NATIVE_WINDOW_CONSUMER_USAGE_BITS = 10, /* deprecated */
119
120 /**
121 * Transformation that will by applied to buffers by the hwcomposer.
122 * This must not be set or checked by producer endpoints, and will
123 * disable the transform hint set in SurfaceFlinger (see
124 * NATIVE_WINDOW_TRANSFORM_HINT).
125 *
126 * INTENDED USE:
127 * Temporary - Please do not use this. This is intended only to be used
128 * by the camera's LEGACY mode.
129 *
130 * In situations where a SurfaceFlinger client wishes to set a transform
131 * that is not visible to the producer, and will always be applied in the
132 * hardware composer, the client can set this flag with
133 * native_window_set_buffers_sticky_transform. This can be used to rotate
134 * and flip buffers consumed by hardware composer without actually changing
135 * the aspect ratio of the buffers produced.
136 */
137 NATIVE_WINDOW_STICKY_TRANSFORM = 11,
138
139 /**
140 * The default data space for the buffers as set by the consumer.
141 * The values are defined in graphics.h.
142 */
143 NATIVE_WINDOW_DEFAULT_DATASPACE = 12,
144
145 /* see ANativeWindowQuery in vndk/window.h */
146 NATIVE_WINDOW_BUFFER_AGE = ANATIVEWINDOW_QUERY_BUFFER_AGE,
147
148 /*
149 * Returns the duration of the last dequeueBuffer call in microseconds
150 * Deprecated: please use NATIVE_WINDOW_GET_LAST_DEQUEUE_DURATION in
151 * perform() instead, which supports nanosecond precision.
152 */
153 NATIVE_WINDOW_LAST_DEQUEUE_DURATION = 14,
154
155 /*
156 * Returns the duration of the last queueBuffer call in microseconds
157 * Deprecated: please use NATIVE_WINDOW_GET_LAST_QUEUE_DURATION in
158 * perform() instead, which supports nanosecond precision.
159 */
160 NATIVE_WINDOW_LAST_QUEUE_DURATION = 15,
161
162 /*
163 * Returns the number of image layers that the ANativeWindow buffer
164 * contains. By default this is 1, unless a buffer is explicitly allocated
165 * to contain multiple layers.
166 */
167 NATIVE_WINDOW_LAYER_COUNT = 16,
168
169 /*
170 * Returns 1 if the native window is valid, 0 otherwise. native window is valid
171 * if it is safe (i.e. no crash will occur) to call any method on it.
172 */
173 NATIVE_WINDOW_IS_VALID = 17,
174
175 /*
176 * Returns 1 if NATIVE_WINDOW_GET_FRAME_TIMESTAMPS will return display
177 * present info, 0 if it won't.
178 */
179 NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_PRESENT = 18,
180
181 /*
182 * The consumer end is capable of handling protected buffers, i.e. buffer
183 * with GRALLOC_USAGE_PROTECTED usage bits on.
184 */
185 NATIVE_WINDOW_CONSUMER_IS_PROTECTED = 19,
186
187 /*
188 * Returns data space for the buffers.
189 */
190 NATIVE_WINDOW_DATASPACE = 20,
191
192 /*
193 * Returns maxBufferCount set by BufferQueueConsumer
194 */
195 NATIVE_WINDOW_MAX_BUFFER_COUNT = 21,
196 };
197
198 /* Valid operations for the (*perform)() hook.
199 *
200 * Values marked as 'deprecated' are supported, but have been superceded by
201 * other functionality.
202 *
203 * Values marked as 'private' should be considered private to the framework.
204 * HAL implementation code with access to an ANativeWindow should not use these,
205 * as it may not interact properly with the framework's use of the
206 * ANativeWindow.
207 */
208 enum {
209 // clang-format off
210 NATIVE_WINDOW_SET_USAGE = ANATIVEWINDOW_PERFORM_SET_USAGE, /* deprecated */
211 NATIVE_WINDOW_CONNECT = 1, /* deprecated */
212 NATIVE_WINDOW_DISCONNECT = 2, /* deprecated */
213 NATIVE_WINDOW_SET_CROP = 3, /* private */
214 NATIVE_WINDOW_SET_BUFFER_COUNT = 4,
215 NATIVE_WINDOW_SET_BUFFERS_GEOMETRY = ANATIVEWINDOW_PERFORM_SET_BUFFERS_GEOMETRY, /* deprecated */
216 NATIVE_WINDOW_SET_BUFFERS_TRANSFORM = 6,
217 NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP = 7,
218 NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS = 8,
219 NATIVE_WINDOW_SET_BUFFERS_FORMAT = ANATIVEWINDOW_PERFORM_SET_BUFFERS_FORMAT,
220 NATIVE_WINDOW_SET_SCALING_MODE = 10, /* private */
221 NATIVE_WINDOW_LOCK = 11, /* private */
222 NATIVE_WINDOW_UNLOCK_AND_POST = 12, /* private */
223 NATIVE_WINDOW_API_CONNECT = 13, /* private */
224 NATIVE_WINDOW_API_DISCONNECT = 14, /* private */
225 NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS = 15, /* private */
226 NATIVE_WINDOW_SET_POST_TRANSFORM_CROP = 16, /* deprecated, unimplemented */
227 NATIVE_WINDOW_SET_BUFFERS_STICKY_TRANSFORM = 17, /* private */
228 NATIVE_WINDOW_SET_SIDEBAND_STREAM = 18,
229 NATIVE_WINDOW_SET_BUFFERS_DATASPACE = 19,
230 NATIVE_WINDOW_SET_SURFACE_DAMAGE = 20, /* private */
231 NATIVE_WINDOW_SET_SHARED_BUFFER_MODE = 21,
232 NATIVE_WINDOW_SET_AUTO_REFRESH = 22,
233 NATIVE_WINDOW_GET_REFRESH_CYCLE_DURATION = 23,
234 NATIVE_WINDOW_GET_NEXT_FRAME_ID = 24,
235 NATIVE_WINDOW_ENABLE_FRAME_TIMESTAMPS = 25,
236 NATIVE_WINDOW_GET_COMPOSITOR_TIMING = 26,
237 NATIVE_WINDOW_GET_FRAME_TIMESTAMPS = 27,
238 NATIVE_WINDOW_GET_WIDE_COLOR_SUPPORT = 28,
239 NATIVE_WINDOW_GET_HDR_SUPPORT = 29,
240 NATIVE_WINDOW_SET_USAGE64 = ANATIVEWINDOW_PERFORM_SET_USAGE64,
241 NATIVE_WINDOW_GET_CONSUMER_USAGE64 = 31,
242 NATIVE_WINDOW_SET_BUFFERS_SMPTE2086_METADATA = 32,
243 NATIVE_WINDOW_SET_BUFFERS_CTA861_3_METADATA = 33,
244 NATIVE_WINDOW_SET_BUFFERS_HDR10_PLUS_METADATA = 34,
245 NATIVE_WINDOW_SET_AUTO_PREROTATION = 35,
246 NATIVE_WINDOW_GET_LAST_DEQUEUE_START = 36, /* private */
247 NATIVE_WINDOW_SET_DEQUEUE_TIMEOUT = 37, /* private */
248 NATIVE_WINDOW_GET_LAST_DEQUEUE_DURATION = 38, /* private */
249 NATIVE_WINDOW_GET_LAST_QUEUE_DURATION = 39, /* private */
250 NATIVE_WINDOW_SET_FRAME_RATE = 40,
251 NATIVE_WINDOW_SET_CANCEL_INTERCEPTOR = 41, /* private */
252 NATIVE_WINDOW_SET_DEQUEUE_INTERCEPTOR = 42, /* private */
253 NATIVE_WINDOW_SET_PERFORM_INTERCEPTOR = 43, /* private */
254 NATIVE_WINDOW_SET_QUEUE_INTERCEPTOR = 44, /* private */
255 NATIVE_WINDOW_ALLOCATE_BUFFERS = 45, /* private */
256 NATIVE_WINDOW_GET_LAST_QUEUED_BUFFER = 46, /* private */
257 NATIVE_WINDOW_SET_QUERY_INTERCEPTOR = 47, /* private */
258 NATIVE_WINDOW_GET_LAST_QUEUED_BUFFER2 = 50, /* private */
259 // clang-format on
260 };
261
262 /* parameter for NATIVE_WINDOW_[API_][DIS]CONNECT */
263 enum {
264 /* Buffers will be queued by EGL via eglSwapBuffers after being filled using
265 * OpenGL ES.
266 */
267 NATIVE_WINDOW_API_EGL = 1,
268
269 /* Buffers will be queued after being filled using the CPU
270 */
271 NATIVE_WINDOW_API_CPU = 2,
272
273 /* Buffers will be queued by Stagefright after being filled by a video
274 * decoder. The video decoder can either be a software or hardware decoder.
275 */
276 NATIVE_WINDOW_API_MEDIA = 3,
277
278 /* Buffers will be queued by the the camera HAL.
279 */
280 NATIVE_WINDOW_API_CAMERA = 4,
281 };
282
283 /* parameter for NATIVE_WINDOW_SET_BUFFERS_TRANSFORM */
284 enum {
285 /* flip source image horizontally */
286 NATIVE_WINDOW_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H ,
287 /* flip source image vertically */
288 NATIVE_WINDOW_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V,
289 /* rotate source image 90 degrees clock-wise, and is applied after TRANSFORM_FLIP_{H|V} */
290 NATIVE_WINDOW_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90,
291 /* rotate source image 180 degrees */
292 NATIVE_WINDOW_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180,
293 /* rotate source image 270 degrees clock-wise */
294 NATIVE_WINDOW_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270,
295 /* transforms source by the inverse transform of the screen it is displayed onto. This
296 * transform is applied last */
297 NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY = 0x08
298 };
299
300 /* parameter for NATIVE_WINDOW_SET_SCALING_MODE
301 * keep in sync with Surface.java in frameworks/base */
302 enum {
303 /* the window content is not updated (frozen) until a buffer of
304 * the window size is received (enqueued)
305 */
306 NATIVE_WINDOW_SCALING_MODE_FREEZE = 0,
307 /* the buffer is scaled in both dimensions to match the window size */
308 NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW = 1,
309 /* the buffer is scaled uniformly such that the smaller dimension
310 * of the buffer matches the window size (cropping in the process)
311 */
312 NATIVE_WINDOW_SCALING_MODE_SCALE_CROP = 2,
313 /* the window is clipped to the size of the buffer's crop rectangle; pixels
314 * outside the crop rectangle are treated as if they are completely
315 * transparent.
316 */
317 NATIVE_WINDOW_SCALING_MODE_NO_SCALE_CROP = 3,
318 };
319
320 /* values returned by the NATIVE_WINDOW_CONCRETE_TYPE query */
321 enum {
322 NATIVE_WINDOW_FRAMEBUFFER = 0, /* FramebufferNativeWindow */
323 NATIVE_WINDOW_SURFACE = 1, /* Surface */
324 };
325
326 /* parameter for NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP
327 *
328 * Special timestamp value to indicate that timestamps should be auto-generated
329 * by the native window when queueBuffer is called. This is equal to INT64_MIN,
330 * defined directly to avoid problems with C99/C++ inclusion of stdint.h.
331 */
332 static const int64_t NATIVE_WINDOW_TIMESTAMP_AUTO = (-9223372036854775807LL-1);
333
334 /* parameter for NATIVE_WINDOW_GET_FRAME_TIMESTAMPS
335 *
336 * Special timestamp value to indicate the timestamps aren't yet known or
337 * that they are invalid.
338 */
339 static const int64_t NATIVE_WINDOW_TIMESTAMP_PENDING = -2;
340 static const int64_t NATIVE_WINDOW_TIMESTAMP_INVALID = -1;
341
342 struct ANativeWindow
343 {
344 #ifdef __cplusplus
ANativeWindowANativeWindow345 ANativeWindow()
346 : flags(0), minSwapInterval(0), maxSwapInterval(0), xdpi(0), ydpi(0)
347 {
348 common.magic = ANDROID_NATIVE_WINDOW_MAGIC;
349 common.version = sizeof(ANativeWindow);
350 memset(common.reserved, 0, sizeof(common.reserved));
351 }
352
353 /* Implement the methods that sp<ANativeWindow> expects so that it
354 can be used to automatically refcount ANativeWindow's. */
incStrongANativeWindow355 void incStrong(const void* /*id*/) const {
356 common.incRef(const_cast<android_native_base_t*>(&common));
357 }
decStrongANativeWindow358 void decStrong(const void* /*id*/) const {
359 common.decRef(const_cast<android_native_base_t*>(&common));
360 }
361 #endif
362
363 struct android_native_base_t common;
364
365 /* flags describing some attributes of this surface or its updater */
366 const uint32_t flags;
367
368 /* min swap interval supported by this updated */
369 const int minSwapInterval;
370
371 /* max swap interval supported by this updated */
372 const int maxSwapInterval;
373
374 /* horizontal and vertical resolution in DPI */
375 const float xdpi;
376 const float ydpi;
377
378 /* Some storage reserved for the OEM's driver. */
379 intptr_t oem[4];
380
381 /*
382 * Set the swap interval for this surface.
383 *
384 * Returns 0 on success or -errno on error.
385 */
386 int (*setSwapInterval)(struct ANativeWindow* window,
387 int interval);
388
389 /*
390 * Hook called by EGL to acquire a buffer. After this call, the buffer
391 * is not locked, so its content cannot be modified. This call may block if
392 * no buffers are available.
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 * Returns 0 on success or -errno on error.
401 *
402 * XXX: This function is deprecated. It will continue to work for some
403 * time for binary compatibility, but the new dequeueBuffer function that
404 * outputs a fence file descriptor should be used in its place.
405 */
406 int (*dequeueBuffer_DEPRECATED)(struct ANativeWindow* window,
407 struct ANativeWindowBuffer** buffer);
408
409 /*
410 * hook called by EGL to lock a buffer. This MUST be called before modifying
411 * the content of a buffer. The buffer must have been acquired with
412 * dequeueBuffer first.
413 *
414 * Returns 0 on success or -errno on error.
415 *
416 * XXX: This function is deprecated. It will continue to work for some
417 * time for binary compatibility, but it is essentially a no-op, and calls
418 * to it should be removed.
419 */
420 int (*lockBuffer_DEPRECATED)(struct ANativeWindow* window,
421 struct ANativeWindowBuffer* buffer);
422
423 /*
424 * Hook called by EGL when modifications to the render buffer are done.
425 * This unlocks and post the buffer.
426 *
427 * The window holds a reference to the buffer between dequeueBuffer and
428 * either queueBuffer or cancelBuffer, so clients only need their own
429 * reference if they might use the buffer after queueing or canceling it.
430 * Holding a reference to a buffer after queueing or canceling it is only
431 * allowed if a specific buffer count has been set.
432 *
433 * Buffers MUST be queued in the same order than they were dequeued.
434 *
435 * Returns 0 on success or -errno on error.
436 *
437 * XXX: This function is deprecated. It will continue to work for some
438 * time for binary compatibility, but the new queueBuffer function that
439 * takes a fence file descriptor should be used in its place (pass a value
440 * of -1 for the fence file descriptor if there is no valid one to pass).
441 */
442 int (*queueBuffer_DEPRECATED)(struct ANativeWindow* window,
443 struct ANativeWindowBuffer* buffer);
444
445 /*
446 * hook used to retrieve information about the native window.
447 *
448 * Returns 0 on success or -errno on error.
449 */
450 int (*query)(const struct ANativeWindow* window,
451 int what, int* value);
452
453 /*
454 * hook used to perform various operations on the surface.
455 * (*perform)() is a generic mechanism to add functionality to
456 * ANativeWindow while keeping backward binary compatibility.
457 *
458 * DO NOT CALL THIS HOOK DIRECTLY. Instead, use the helper functions
459 * defined below.
460 *
461 * (*perform)() returns -ENOENT if the 'what' parameter is not supported
462 * by the surface's implementation.
463 *
464 * See above for a list of valid operations, such as
465 * NATIVE_WINDOW_SET_USAGE or NATIVE_WINDOW_CONNECT
466 */
467 int (*perform)(struct ANativeWindow* window,
468 int operation, ... );
469
470 /*
471 * Hook used to cancel a buffer that has been dequeued.
472 * No synchronization is performed between dequeue() and cancel(), so
473 * either external synchronization is needed, or these functions must be
474 * called from the same thread.
475 *
476 * The window holds a reference to the buffer between dequeueBuffer and
477 * either queueBuffer or cancelBuffer, so clients only need their own
478 * reference if they might use the buffer after queueing or canceling it.
479 * Holding a reference to a buffer after queueing or canceling it is only
480 * allowed if a specific buffer count has been set.
481 *
482 * XXX: This function is deprecated. It will continue to work for some
483 * time for binary compatibility, but the new cancelBuffer function that
484 * takes a fence file descriptor should be used in its place (pass a value
485 * of -1 for the fence file descriptor if there is no valid one to pass).
486 */
487 int (*cancelBuffer_DEPRECATED)(struct ANativeWindow* window,
488 struct ANativeWindowBuffer* buffer);
489
490 /*
491 * Hook called by EGL to acquire a buffer. This call may block if no
492 * buffers are available.
493 *
494 * The window holds a reference to the buffer between dequeueBuffer and
495 * either queueBuffer or cancelBuffer, so clients only need their own
496 * reference if they might use the buffer after queueing or canceling it.
497 * Holding a reference to a buffer after queueing or canceling it is only
498 * allowed if a specific buffer count has been set.
499 *
500 * The libsync fence file descriptor returned in the int pointed to by the
501 * fenceFd argument will refer to the fence that must signal before the
502 * dequeued buffer may be written to. A value of -1 indicates that the
503 * caller may access the buffer immediately without waiting on a fence. If
504 * a valid file descriptor is returned (i.e. any value except -1) then the
505 * caller is responsible for closing the file descriptor.
506 *
507 * Returns 0 on success or -errno on error.
508 */
509 int (*dequeueBuffer)(struct ANativeWindow* window,
510 struct ANativeWindowBuffer** buffer, int* fenceFd);
511
512 /*
513 * Hook called by EGL when modifications to the render buffer are done.
514 * This unlocks and post the buffer.
515 *
516 * The window holds a reference to the buffer between dequeueBuffer and
517 * either queueBuffer or cancelBuffer, so clients only need their own
518 * reference if they might use the buffer after queueing or canceling it.
519 * Holding a reference to a buffer after queueing or canceling it is only
520 * allowed if a specific buffer count has been set.
521 *
522 * The fenceFd argument specifies a libsync fence file descriptor for a
523 * fence that must signal before the buffer can be accessed. If the buffer
524 * can be accessed immediately then a value of -1 should be used. The
525 * caller must not use the file descriptor after it is passed to
526 * queueBuffer, and the ANativeWindow implementation is responsible for
527 * closing it.
528 *
529 * Returns 0 on success or -errno on error.
530 */
531 int (*queueBuffer)(struct ANativeWindow* window,
532 struct ANativeWindowBuffer* buffer, int fenceFd);
533
534 /*
535 * Hook used to cancel a buffer that has been dequeued.
536 * No synchronization is performed between dequeue() and cancel(), so
537 * either external synchronization is needed, or these functions must be
538 * called from the same thread.
539 *
540 * The window holds a reference to the buffer between dequeueBuffer and
541 * either queueBuffer or cancelBuffer, so clients only need their own
542 * reference if they might use the buffer after queueing or canceling it.
543 * Holding a reference to a buffer after queueing or canceling it is only
544 * allowed if a specific buffer count has been set.
545 *
546 * The fenceFd argument specifies a libsync fence file decsriptor for a
547 * fence that must signal before the buffer can be accessed. If the buffer
548 * can be accessed immediately then a value of -1 should be used.
549 *
550 * Note that if the client has not waited on the fence that was returned
551 * from dequeueBuffer, that same fence should be passed to cancelBuffer to
552 * ensure that future uses of the buffer are preceded by a wait on that
553 * fence. The caller must not use the file descriptor after it is passed
554 * to cancelBuffer, and the ANativeWindow implementation is responsible for
555 * closing it.
556 *
557 * Returns 0 on success or -errno on error.
558 */
559 int (*cancelBuffer)(struct ANativeWindow* window,
560 struct ANativeWindowBuffer* buffer, int fenceFd);
561 };
562
563 /* Backwards compatibility: use ANativeWindow (struct ANativeWindow in C).
564 * android_native_window_t is deprecated.
565 */
566 typedef struct ANativeWindow android_native_window_t __deprecated;
567
568 /*
569 * native_window_set_usage64(..., usage)
570 * Sets the intended usage flags for the next buffers
571 * acquired with (*lockBuffer)() and on.
572 *
573 * Valid usage flags are defined in android/hardware_buffer.h
574 * All AHARDWAREBUFFER_USAGE_* flags can be specified as needed.
575 *
576 * Calling this function will usually cause following buffers to be
577 * reallocated.
578 */
native_window_set_usage(struct ANativeWindow * window,uint64_t usage)579 static inline int native_window_set_usage(struct ANativeWindow* window, uint64_t usage) {
580 return window->perform(window, NATIVE_WINDOW_SET_USAGE64, usage);
581 }
582
583 /* deprecated. Always returns 0. Don't call. */
584 static inline int native_window_connect(
585 struct ANativeWindow* window __UNUSED, int api __UNUSED) __deprecated;
586
native_window_connect(struct ANativeWindow * window __UNUSED,int api __UNUSED)587 static inline int native_window_connect(
588 struct ANativeWindow* window __UNUSED, int api __UNUSED) {
589 return 0;
590 }
591
592 /* deprecated. Always returns 0. Don't call. */
593 static inline int native_window_disconnect(
594 struct ANativeWindow* window __UNUSED, int api __UNUSED) __deprecated;
595
native_window_disconnect(struct ANativeWindow * window __UNUSED,int api __UNUSED)596 static inline int native_window_disconnect(
597 struct ANativeWindow* window __UNUSED, int api __UNUSED) {
598 return 0;
599 }
600
601 /*
602 * native_window_set_crop(..., crop)
603 * Sets which region of the next queued buffers needs to be considered.
604 * Depending on the scaling mode, a buffer's crop region is scaled and/or
605 * cropped to match the surface's size. This function sets the crop in
606 * pre-transformed buffer pixel coordinates.
607 *
608 * The specified crop region applies to all buffers queued after it is called.
609 *
610 * If 'crop' is NULL, subsequently queued buffers won't be cropped.
611 *
612 * An error is returned if for instance the crop region is invalid, out of the
613 * buffer's bound or if the window is invalid.
614 */
native_window_set_crop(struct ANativeWindow * window,android_native_rect_t const * crop)615 static inline int native_window_set_crop(
616 struct ANativeWindow* window,
617 android_native_rect_t const * crop)
618 {
619 return window->perform(window, NATIVE_WINDOW_SET_CROP, crop);
620 }
621
622 /*
623 * native_window_set_buffer_count(..., count)
624 * Sets the number of buffers associated with this native window.
625 */
native_window_set_buffer_count(struct ANativeWindow * window,size_t bufferCount)626 static inline int native_window_set_buffer_count(
627 struct ANativeWindow* window,
628 size_t bufferCount)
629 {
630 return window->perform(window, NATIVE_WINDOW_SET_BUFFER_COUNT, bufferCount);
631 }
632
633 /*
634 * native_window_set_buffers_geometry(..., int w, int h, int format)
635 * All buffers dequeued after this call will have the dimensions and format
636 * specified. A successful call to this function has the same effect as calling
637 * native_window_set_buffers_size and native_window_set_buffers_format.
638 *
639 * XXX: This function is deprecated. The native_window_set_buffers_dimensions
640 * and native_window_set_buffers_format functions should be used instead.
641 */
642 static inline int native_window_set_buffers_geometry(
643 struct ANativeWindow* window,
644 int w, int h, int format) __deprecated;
645
native_window_set_buffers_geometry(struct ANativeWindow * window,int w,int h,int format)646 static inline int native_window_set_buffers_geometry(
647 struct ANativeWindow* window,
648 int w, int h, int format)
649 {
650 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_GEOMETRY,
651 w, h, format);
652 }
653
654 /*
655 * native_window_set_buffers_dimensions(..., int w, int h)
656 * All buffers dequeued after this call will have the dimensions specified.
657 * In particular, all buffers will have a fixed-size, independent from the
658 * native-window size. They will be scaled according to the scaling mode
659 * (see native_window_set_scaling_mode) upon window composition.
660 *
661 * If w and h are 0, the normal behavior is restored. That is, dequeued buffers
662 * following this call will be sized to match the window's size.
663 *
664 * Calling this function will reset the window crop to a NULL value, which
665 * disables cropping of the buffers.
666 */
native_window_set_buffers_dimensions(struct ANativeWindow * window,int w,int h)667 static inline int native_window_set_buffers_dimensions(
668 struct ANativeWindow* window,
669 int w, int h)
670 {
671 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS,
672 w, h);
673 }
674
675 /*
676 * native_window_set_buffers_user_dimensions(..., int w, int h)
677 *
678 * Sets the user buffer size for the window, which overrides the
679 * window's size. All buffers dequeued after this call will have the
680 * dimensions specified unless overridden by
681 * native_window_set_buffers_dimensions. All buffers will have a
682 * fixed-size, independent from the native-window size. They will be
683 * scaled according to the scaling mode (see
684 * native_window_set_scaling_mode) upon window composition.
685 *
686 * If w and h are 0, the normal behavior is restored. That is, the
687 * default buffer size will match the windows's size.
688 *
689 * Calling this function will reset the window crop to a NULL value, which
690 * disables cropping of the buffers.
691 */
native_window_set_buffers_user_dimensions(struct ANativeWindow * window,int w,int h)692 static inline int native_window_set_buffers_user_dimensions(
693 struct ANativeWindow* window,
694 int w, int h)
695 {
696 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS,
697 w, h);
698 }
699
700 /*
701 * native_window_set_buffers_format(..., int format)
702 * All buffers dequeued after this call will have the format specified.
703 *
704 * If the specified format is 0, the default buffer format will be used.
705 */
native_window_set_buffers_format(struct ANativeWindow * window,int format)706 static inline int native_window_set_buffers_format(
707 struct ANativeWindow* window,
708 int format)
709 {
710 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_FORMAT, format);
711 }
712
713 /*
714 * native_window_set_buffers_data_space(..., int dataSpace)
715 * All buffers queued after this call will be associated with the dataSpace
716 * parameter specified.
717 *
718 * dataSpace specifies additional information about the buffer that's dependent
719 * on the buffer format and the endpoints. For example, it can be used to convey
720 * the color space of the image data in the buffer, or it can be used to
721 * indicate that the buffers contain depth measurement data instead of color
722 * images. The default dataSpace is 0, HAL_DATASPACE_UNKNOWN, unless it has been
723 * overridden by the consumer.
724 */
native_window_set_buffers_data_space(struct ANativeWindow * window,android_dataspace_t dataSpace)725 static inline int native_window_set_buffers_data_space(
726 struct ANativeWindow* window,
727 android_dataspace_t dataSpace)
728 {
729 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_DATASPACE,
730 dataSpace);
731 }
732
733 /*
734 * native_window_set_buffers_smpte2086_metadata(..., metadata)
735 * All buffers queued after this call will be associated with the SMPTE
736 * ST.2086 metadata specified.
737 *
738 * metadata specifies additional information about the contents of the buffer
739 * that may affect how it's displayed. When it is nullptr, it means no such
740 * information is available. No SMPTE ST.2086 metadata is associated with the
741 * buffers by default.
742 */
native_window_set_buffers_smpte2086_metadata(struct ANativeWindow * window,const struct android_smpte2086_metadata * metadata)743 static inline int native_window_set_buffers_smpte2086_metadata(
744 struct ANativeWindow* window,
745 const struct android_smpte2086_metadata* metadata)
746 {
747 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_SMPTE2086_METADATA,
748 metadata);
749 }
750
751 /*
752 * native_window_set_buffers_cta861_3_metadata(..., metadata)
753 * All buffers queued after this call will be associated with the CTA-861.3
754 * metadata specified.
755 *
756 * metadata specifies additional information about the contents of the buffer
757 * that may affect how it's displayed. When it is nullptr, it means no such
758 * information is available. No CTA-861.3 metadata is associated with the
759 * buffers by default.
760 */
native_window_set_buffers_cta861_3_metadata(struct ANativeWindow * window,const struct android_cta861_3_metadata * metadata)761 static inline int native_window_set_buffers_cta861_3_metadata(
762 struct ANativeWindow* window,
763 const struct android_cta861_3_metadata* metadata)
764 {
765 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_CTA861_3_METADATA,
766 metadata);
767 }
768
769 /*
770 * native_window_set_buffers_hdr10_plus_metadata(..., metadata)
771 * All buffers queued after this call will be associated with the
772 * HDR10+ dynamic metadata specified.
773 *
774 * metadata specifies additional dynamic information about the
775 * contents of the buffer that may affect how it is displayed. When
776 * it is nullptr, it means no such information is available. No
777 * HDR10+ dynamic emtadata is associated with the buffers by default.
778 *
779 * Parameter "size" refers to the length of the metadata blob pointed to
780 * by parameter "data". The metadata blob will adhere to the HDR10+ SEI
781 * message standard.
782 */
native_window_set_buffers_hdr10_plus_metadata(struct ANativeWindow * window,const size_t size,const uint8_t * metadata)783 static inline int native_window_set_buffers_hdr10_plus_metadata(struct ANativeWindow* window,
784 const size_t size,
785 const uint8_t* metadata) {
786 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_HDR10_PLUS_METADATA, size,
787 metadata);
788 }
789
790 /*
791 * native_window_set_buffers_transform(..., int transform)
792 * All buffers queued after this call will be displayed transformed according
793 * to the transform parameter specified.
794 */
native_window_set_buffers_transform(struct ANativeWindow * window,int transform)795 static inline int native_window_set_buffers_transform(
796 struct ANativeWindow* window,
797 int transform)
798 {
799 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TRANSFORM,
800 transform);
801 }
802
803 /*
804 * native_window_set_buffers_sticky_transform(..., int transform)
805 * All buffers queued after this call will be displayed transformed according
806 * to the transform parameter specified applied on top of the regular buffer
807 * transform. Setting this transform will disable the transform hint.
808 *
809 * Temporary - This is only intended to be used by the LEGACY camera mode, do
810 * not use this for anything else.
811 */
native_window_set_buffers_sticky_transform(struct ANativeWindow * window,int transform)812 static inline int native_window_set_buffers_sticky_transform(
813 struct ANativeWindow* window,
814 int transform)
815 {
816 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_STICKY_TRANSFORM,
817 transform);
818 }
819
820 /*
821 * native_window_set_buffers_timestamp(..., int64_t timestamp)
822 * All buffers queued after this call will be associated with the timestamp
823 * parameter specified. If the timestamp is set to NATIVE_WINDOW_TIMESTAMP_AUTO
824 * (the default), timestamps will be generated automatically when queueBuffer is
825 * called. The timestamp is measured in nanoseconds, and is normally monotonically
826 * increasing. The timestamp should be unaffected by time-of-day adjustments,
827 * and for a camera should be strictly monotonic but for a media player may be
828 * reset when the position is set.
829 */
native_window_set_buffers_timestamp(struct ANativeWindow * window,int64_t timestamp)830 static inline int native_window_set_buffers_timestamp(
831 struct ANativeWindow* window,
832 int64_t timestamp)
833 {
834 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP,
835 timestamp);
836 }
837
838 /*
839 * native_window_set_scaling_mode(..., int mode)
840 * All buffers queued after this call will be associated with the scaling mode
841 * specified.
842 */
native_window_set_scaling_mode(struct ANativeWindow * window,int mode)843 static inline int native_window_set_scaling_mode(
844 struct ANativeWindow* window,
845 int mode)
846 {
847 return window->perform(window, NATIVE_WINDOW_SET_SCALING_MODE,
848 mode);
849 }
850
851 /*
852 * native_window_api_connect(..., int api)
853 * connects an API to this window. only one API can be connected at a time.
854 * Returns -EINVAL if for some reason the window cannot be connected, which
855 * can happen if it's connected to some other API.
856 */
native_window_api_connect(struct ANativeWindow * window,int api)857 static inline int native_window_api_connect(
858 struct ANativeWindow* window, int api)
859 {
860 return window->perform(window, NATIVE_WINDOW_API_CONNECT, api);
861 }
862
863 /*
864 * native_window_api_disconnect(..., int api)
865 * disconnect the API from this window.
866 * An error is returned if for instance the window wasn't connected in the
867 * first place.
868 */
native_window_api_disconnect(struct ANativeWindow * window,int api)869 static inline int native_window_api_disconnect(
870 struct ANativeWindow* window, int api)
871 {
872 return window->perform(window, NATIVE_WINDOW_API_DISCONNECT, api);
873 }
874
875 /*
876 * native_window_dequeue_buffer_and_wait(...)
877 * Dequeue a buffer and wait on the fence associated with that buffer. The
878 * buffer may safely be accessed immediately upon this function returning. An
879 * error is returned if either of the dequeue or the wait operations fail.
880 */
native_window_dequeue_buffer_and_wait(ANativeWindow * anw,struct ANativeWindowBuffer ** anb)881 static inline int native_window_dequeue_buffer_and_wait(ANativeWindow *anw,
882 struct ANativeWindowBuffer** anb) {
883 return anw->dequeueBuffer_DEPRECATED(anw, anb);
884 }
885
886 /*
887 * native_window_set_sideband_stream(..., native_handle_t*)
888 * Attach a sideband buffer stream to a native window.
889 */
native_window_set_sideband_stream(struct ANativeWindow * window,native_handle_t * sidebandHandle)890 static inline int native_window_set_sideband_stream(
891 struct ANativeWindow* window,
892 native_handle_t* sidebandHandle)
893 {
894 return window->perform(window, NATIVE_WINDOW_SET_SIDEBAND_STREAM,
895 sidebandHandle);
896 }
897
898 /*
899 * native_window_set_surface_damage(..., android_native_rect_t* rects, int numRects)
900 * Set the surface damage (i.e., the region of the surface that has changed
901 * since the previous frame). The damage set by this call will be reset (to the
902 * default of full-surface damage) after calling queue, so this must be called
903 * prior to every frame with damage that does not cover the whole surface if the
904 * caller desires downstream consumers to use this optimization.
905 *
906 * The damage region is specified as an array of rectangles, with the important
907 * caveat that the origin of the surface is considered to be the bottom-left
908 * corner, as in OpenGL ES.
909 *
910 * If numRects is set to 0, rects may be NULL, and the surface damage will be
911 * set to the full surface (the same as if this function had not been called for
912 * this frame).
913 */
native_window_set_surface_damage(struct ANativeWindow * window,const android_native_rect_t * rects,size_t numRects)914 static inline int native_window_set_surface_damage(
915 struct ANativeWindow* window,
916 const android_native_rect_t* rects, size_t numRects)
917 {
918 return window->perform(window, NATIVE_WINDOW_SET_SURFACE_DAMAGE,
919 rects, numRects);
920 }
921
922 /*
923 * native_window_set_shared_buffer_mode(..., bool sharedBufferMode)
924 * Enable/disable shared buffer mode
925 */
native_window_set_shared_buffer_mode(struct ANativeWindow * window,bool sharedBufferMode)926 static inline int native_window_set_shared_buffer_mode(
927 struct ANativeWindow* window,
928 bool sharedBufferMode)
929 {
930 return window->perform(window, NATIVE_WINDOW_SET_SHARED_BUFFER_MODE,
931 sharedBufferMode);
932 }
933
934 /*
935 * native_window_set_auto_refresh(..., autoRefresh)
936 * Enable/disable auto refresh when in shared buffer mode
937 */
native_window_set_auto_refresh(struct ANativeWindow * window,bool autoRefresh)938 static inline int native_window_set_auto_refresh(
939 struct ANativeWindow* window,
940 bool autoRefresh)
941 {
942 return window->perform(window, NATIVE_WINDOW_SET_AUTO_REFRESH, autoRefresh);
943 }
944
native_window_get_refresh_cycle_duration(struct ANativeWindow * window,int64_t * outRefreshDuration)945 static inline int native_window_get_refresh_cycle_duration(
946 struct ANativeWindow* window,
947 int64_t* outRefreshDuration)
948 {
949 return window->perform(window, NATIVE_WINDOW_GET_REFRESH_CYCLE_DURATION,
950 outRefreshDuration);
951 }
952
native_window_get_next_frame_id(struct ANativeWindow * window,uint64_t * frameId)953 static inline int native_window_get_next_frame_id(
954 struct ANativeWindow* window, uint64_t* frameId)
955 {
956 return window->perform(window, NATIVE_WINDOW_GET_NEXT_FRAME_ID, frameId);
957 }
958
native_window_enable_frame_timestamps(struct ANativeWindow * window,bool enable)959 static inline int native_window_enable_frame_timestamps(
960 struct ANativeWindow* window, bool enable)
961 {
962 return window->perform(window, NATIVE_WINDOW_ENABLE_FRAME_TIMESTAMPS,
963 enable);
964 }
965
native_window_get_compositor_timing(struct ANativeWindow * window,int64_t * compositeDeadline,int64_t * compositeInterval,int64_t * compositeToPresentLatency)966 static inline int native_window_get_compositor_timing(
967 struct ANativeWindow* window,
968 int64_t* compositeDeadline, int64_t* compositeInterval,
969 int64_t* compositeToPresentLatency)
970 {
971 return window->perform(window, NATIVE_WINDOW_GET_COMPOSITOR_TIMING,
972 compositeDeadline, compositeInterval, compositeToPresentLatency);
973 }
974
native_window_get_frame_timestamps(struct ANativeWindow * window,uint64_t frameId,int64_t * outRequestedPresentTime,int64_t * outAcquireTime,int64_t * outLatchTime,int64_t * outFirstRefreshStartTime,int64_t * outLastRefreshStartTime,int64_t * outGpuCompositionDoneTime,int64_t * outDisplayPresentTime,int64_t * outDequeueReadyTime,int64_t * outReleaseTime)975 static inline int native_window_get_frame_timestamps(
976 struct ANativeWindow* window, uint64_t frameId,
977 int64_t* outRequestedPresentTime, int64_t* outAcquireTime,
978 int64_t* outLatchTime, int64_t* outFirstRefreshStartTime,
979 int64_t* outLastRefreshStartTime, int64_t* outGpuCompositionDoneTime,
980 int64_t* outDisplayPresentTime, int64_t* outDequeueReadyTime,
981 int64_t* outReleaseTime)
982 {
983 return window->perform(window, NATIVE_WINDOW_GET_FRAME_TIMESTAMPS,
984 frameId, outRequestedPresentTime, outAcquireTime, outLatchTime,
985 outFirstRefreshStartTime, outLastRefreshStartTime,
986 outGpuCompositionDoneTime, outDisplayPresentTime,
987 outDequeueReadyTime, outReleaseTime);
988 }
989
native_window_get_wide_color_support(struct ANativeWindow * window,bool * outSupport)990 static inline int native_window_get_wide_color_support(
991 struct ANativeWindow* window, bool* outSupport) {
992 return window->perform(window, NATIVE_WINDOW_GET_WIDE_COLOR_SUPPORT,
993 outSupport);
994 }
995
native_window_get_hdr_support(struct ANativeWindow * window,bool * outSupport)996 static inline int native_window_get_hdr_support(struct ANativeWindow* window,
997 bool* outSupport) {
998 return window->perform(window, NATIVE_WINDOW_GET_HDR_SUPPORT, outSupport);
999 }
1000
native_window_get_consumer_usage(struct ANativeWindow * window,uint64_t * outUsage)1001 static inline int native_window_get_consumer_usage(struct ANativeWindow* window,
1002 uint64_t* outUsage) {
1003 return window->perform(window, NATIVE_WINDOW_GET_CONSUMER_USAGE64, outUsage);
1004 }
1005
1006 /*
1007 * native_window_set_auto_prerotation(..., autoPrerotation)
1008 * Enable/disable the auto prerotation at buffer allocation when the buffer size
1009 * is driven by the consumer.
1010 *
1011 * When buffer size is driven by the consumer and the transform hint specifies
1012 * a 90 or 270 degree rotation, if auto prerotation is enabled, the width and
1013 * height used for dequeueBuffer will be additionally swapped.
1014 */
native_window_set_auto_prerotation(struct ANativeWindow * window,bool autoPrerotation)1015 static inline int native_window_set_auto_prerotation(struct ANativeWindow* window,
1016 bool autoPrerotation) {
1017 return window->perform(window, NATIVE_WINDOW_SET_AUTO_PREROTATION, autoPrerotation);
1018 }
1019
native_window_set_frame_rate(struct ANativeWindow * window,float frameRate,int8_t compatibility)1020 static inline int native_window_set_frame_rate(struct ANativeWindow* window, float frameRate,
1021 int8_t compatibility) {
1022 return window->perform(window, NATIVE_WINDOW_SET_FRAME_RATE, (double)frameRate,
1023 (int)compatibility);
1024 }
1025
1026 // ------------------------------------------------------------------------------------------------
1027 // Candidates for APEX visibility
1028 // These functions are planned to be made stable for APEX modules, but have not
1029 // yet been stabilized to a specific api version.
1030 // ------------------------------------------------------------------------------------------------
1031
1032 /**
1033 * Retrieves the last queued buffer for this window, along with the fence that
1034 * fires when the buffer is ready to be read, and the 4x4 coordinate
1035 * transform matrix that should be applied to the buffer's content. The
1036 * transform matrix is represented in column-major order.
1037 *
1038 * If there was no buffer previously queued, then outBuffer will be NULL and
1039 * the value of outFence will be -1.
1040 *
1041 * Note that if outBuffer is not NULL, then the caller will hold a reference
1042 * onto the buffer. Accordingly, the caller must call AHardwareBuffer_release
1043 * when the buffer is no longer needed so that the system may reclaim the
1044 * buffer.
1045 *
1046 * \return NO_ERROR on success.
1047 * \return NO_MEMORY if there was insufficient memory.
1048 */
ANativeWindow_getLastQueuedBuffer(ANativeWindow * window,AHardwareBuffer ** outBuffer,int * outFence,float outTransformMatrix[16])1049 static inline int ANativeWindow_getLastQueuedBuffer(ANativeWindow* window,
1050 AHardwareBuffer** outBuffer, int* outFence,
1051 float outTransformMatrix[16]) {
1052 return window->perform(window, NATIVE_WINDOW_GET_LAST_QUEUED_BUFFER, outBuffer, outFence,
1053 outTransformMatrix);
1054 }
1055
1056 /**
1057 * Retrieves the last queued buffer for this window, along with the fence that
1058 * fires when the buffer is ready to be read. The cropRect & transform should be applied to the
1059 * buffer's content.
1060 *
1061 * If there was no buffer previously queued, then outBuffer will be NULL and
1062 * the value of outFence will be -1.
1063 *
1064 * Note that if outBuffer is not NULL, then the caller will hold a reference
1065 * onto the buffer. Accordingly, the caller must call AHardwareBuffer_release
1066 * when the buffer is no longer needed so that the system may reclaim the
1067 * buffer.
1068 *
1069 * \return NO_ERROR on success.
1070 * \return NO_MEMORY if there was insufficient memory.
1071 * \return STATUS_UNKNOWN_TRANSACTION if this ANativeWindow doesn't support this method, callers
1072 * should fall back to ANativeWindow_getLastQueuedBuffer instead.
1073 */
ANativeWindow_getLastQueuedBuffer2(ANativeWindow * window,AHardwareBuffer ** outBuffer,int * outFence,ARect * outCropRect,uint32_t * outTransform)1074 static inline int ANativeWindow_getLastQueuedBuffer2(ANativeWindow* window,
1075 AHardwareBuffer** outBuffer, int* outFence,
1076 ARect* outCropRect, uint32_t* outTransform) {
1077 return window->perform(window, NATIVE_WINDOW_GET_LAST_QUEUED_BUFFER2, outBuffer, outFence,
1078 outCropRect, outTransform);
1079 }
1080
1081 /**
1082 * Retrieves an identifier for the next frame to be queued by this window.
1083 *
1084 * \return the next frame id.
1085 */
ANativeWindow_getNextFrameId(ANativeWindow * window)1086 static inline int64_t ANativeWindow_getNextFrameId(ANativeWindow* window) {
1087 int64_t value;
1088 window->perform(window, NATIVE_WINDOW_GET_NEXT_FRAME_ID, &value);
1089 return value;
1090 }
1091
1092 /**
1093 * Prototype of the function that an ANativeWindow implementation would call
1094 * when ANativeWindow_query is called.
1095 */
1096 typedef int (*ANativeWindow_queryFn)(const ANativeWindow* window, int what, int* value);
1097
1098 /**
1099 * Prototype of the function that intercepts an invocation of
1100 * ANativeWindow_queryFn, along with a data pointer that's passed by the
1101 * caller who set the interceptor, as well as arguments that would be
1102 * passed to ANativeWindow_queryFn if it were to be called.
1103 */
1104 typedef int (*ANativeWindow_queryInterceptor)(const ANativeWindow* window,
1105 ANativeWindow_queryFn perform, void* data,
1106 int what, int* value);
1107
1108 /**
1109 * Registers an interceptor for ANativeWindow_query. Instead of calling
1110 * the underlying query function, instead the provided interceptor is
1111 * called, which may optionally call the underlying query function. An
1112 * optional data pointer is also provided to side-channel additional arguments.
1113 *
1114 * Note that usage of this should only be used for specialized use-cases by
1115 * either the system partition or to Mainline modules. This should never be
1116 * exposed to NDK or LL-NDK.
1117 *
1118 * Returns NO_ERROR on success, -errno if registration failed.
1119 */
ANativeWindow_setQueryInterceptor(ANativeWindow * window,ANativeWindow_queryInterceptor interceptor,void * data)1120 static inline int ANativeWindow_setQueryInterceptor(ANativeWindow* window,
1121 ANativeWindow_queryInterceptor interceptor,
1122 void* data) {
1123 return window->perform(window, NATIVE_WINDOW_SET_QUERY_INTERCEPTOR, interceptor, data);
1124 }
1125
1126 __END_DECLS
1127