68f9127e88
This changes the ANativeWindow API and the two implementations to reset the window's crop rectangle to be uncropped when the window's buffer geometry is changed. Bug: 3359604 Change-Id: I64283dc8382ae687787ec0bebe6a5d5b4a0dcd6b
426 lines
13 KiB
C++
426 lines
13 KiB
C++
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_ANDROID_NATIVES_H
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#define ANDROID_ANDROID_NATIVES_H
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#include <sys/types.h>
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#include <string.h>
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#include <hardware/gralloc.h>
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#include <android/native_window.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*****************************************************************************/
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#define ANDROID_NATIVE_MAKE_CONSTANT(a,b,c,d) \
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(((unsigned)(a)<<24)|((unsigned)(b)<<16)|((unsigned)(c)<<8)|(unsigned)(d))
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#define ANDROID_NATIVE_WINDOW_MAGIC \
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ANDROID_NATIVE_MAKE_CONSTANT('_','w','n','d')
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#define ANDROID_NATIVE_BUFFER_MAGIC \
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ANDROID_NATIVE_MAKE_CONSTANT('_','b','f','r')
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// ---------------------------------------------------------------------------
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struct android_native_buffer_t;
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typedef struct android_native_rect_t
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{
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int32_t left;
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int32_t top;
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int32_t right;
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int32_t bottom;
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} android_native_rect_t;
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// ---------------------------------------------------------------------------
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typedef struct android_native_base_t
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{
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/* a magic value defined by the actual EGL native type */
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int magic;
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/* the sizeof() of the actual EGL native type */
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int version;
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void* reserved[4];
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/* reference-counting interface */
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void (*incRef)(struct android_native_base_t* base);
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void (*decRef)(struct android_native_base_t* base);
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} android_native_base_t;
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// ---------------------------------------------------------------------------
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/* attributes queriable with query() */
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enum {
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NATIVE_WINDOW_WIDTH = 0,
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NATIVE_WINDOW_HEIGHT,
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NATIVE_WINDOW_FORMAT,
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};
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/* valid operations for the (*perform)() hook */
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enum {
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NATIVE_WINDOW_SET_USAGE = 0,
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NATIVE_WINDOW_CONNECT,
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NATIVE_WINDOW_DISCONNECT,
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NATIVE_WINDOW_SET_CROP,
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NATIVE_WINDOW_SET_BUFFER_COUNT,
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NATIVE_WINDOW_SET_BUFFERS_GEOMETRY,
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NATIVE_WINDOW_SET_BUFFERS_TRANSFORM,
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};
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/* parameter for NATIVE_WINDOW_[DIS]CONNECT */
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enum {
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NATIVE_WINDOW_API_EGL = 1
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};
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/* parameter for NATIVE_WINDOW_SET_BUFFERS_TRANSFORM */
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enum {
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/* flip source image horizontally */
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NATIVE_WINDOW_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H ,
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/* flip source image vertically */
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NATIVE_WINDOW_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V,
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/* rotate source image 90 degrees clock-wise */
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NATIVE_WINDOW_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90,
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/* rotate source image 180 degrees */
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NATIVE_WINDOW_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180,
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/* rotate source image 270 degrees clock-wise */
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NATIVE_WINDOW_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270,
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};
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struct ANativeWindow
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{
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#ifdef __cplusplus
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ANativeWindow()
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: flags(0), minSwapInterval(0), maxSwapInterval(0), xdpi(0), ydpi(0)
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{
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common.magic = ANDROID_NATIVE_WINDOW_MAGIC;
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common.version = sizeof(ANativeWindow);
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memset(common.reserved, 0, sizeof(common.reserved));
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}
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// Implement the methods that sp<ANativeWindow> expects so that it
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// can be used to automatically refcount ANativeWindow's.
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void incStrong(const void* id) const {
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common.incRef(const_cast<android_native_base_t*>(&common));
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}
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void decStrong(const void* id) const {
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common.decRef(const_cast<android_native_base_t*>(&common));
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}
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#endif
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struct android_native_base_t common;
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/* flags describing some attributes of this surface or its updater */
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const uint32_t flags;
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/* min swap interval supported by this updated */
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const int minSwapInterval;
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/* max swap interval supported by this updated */
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const int maxSwapInterval;
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/* horizontal and vertical resolution in DPI */
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const float xdpi;
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const float ydpi;
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/* Some storage reserved for the OEM's driver. */
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intptr_t oem[4];
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/*
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* Set the swap interval for this surface.
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*
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* Returns 0 on success or -errno on error.
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*/
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int (*setSwapInterval)(struct ANativeWindow* window,
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int interval);
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/*
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* hook called by EGL to acquire a buffer. After this call, the buffer
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* is not locked, so its content cannot be modified.
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* this call may block if no buffers are available.
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*
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* Returns 0 on success or -errno on error.
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*/
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int (*dequeueBuffer)(struct ANativeWindow* window,
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struct android_native_buffer_t** buffer);
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/*
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* hook called by EGL to lock a buffer. This MUST be called before modifying
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* the content of a buffer. The buffer must have been acquired with
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* dequeueBuffer first.
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*
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* Returns 0 on success or -errno on error.
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*/
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int (*lockBuffer)(struct ANativeWindow* window,
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struct android_native_buffer_t* buffer);
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/*
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* hook called by EGL when modifications to the render buffer are done.
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* This unlocks and post the buffer.
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*
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* Buffers MUST be queued in the same order than they were dequeued.
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*
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* Returns 0 on success or -errno on error.
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*/
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int (*queueBuffer)(struct ANativeWindow* window,
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struct android_native_buffer_t* buffer);
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/*
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* hook used to retrieve information about the native window.
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*
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* Returns 0 on success or -errno on error.
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*/
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int (*query)(struct ANativeWindow* window,
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int what, int* value);
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/*
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* hook used to perform various operations on the surface.
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* (*perform)() is a generic mechanism to add functionality to
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* ANativeWindow while keeping backward binary compatibility.
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*
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* This hook should not be called directly, instead use the helper functions
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* defined below.
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*
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* (*perform)() returns -ENOENT if the 'what' parameter is not supported
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* by the surface's implementation.
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*
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* The valid operations are:
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* NATIVE_WINDOW_SET_USAGE
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* NATIVE_WINDOW_CONNECT
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* NATIVE_WINDOW_DISCONNECT
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* NATIVE_WINDOW_SET_CROP
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* NATIVE_WINDOW_SET_BUFFER_COUNT
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* NATIVE_WINDOW_SET_BUFFERS_GEOMETRY
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* NATIVE_WINDOW_SET_BUFFERS_TRANSFORM
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*
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*/
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int (*perform)(struct ANativeWindow* window,
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int operation, ... );
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/*
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* hook used to cancel a buffer that has been dequeued.
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* No synchronization is performed between dequeue() and cancel(), so
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* either external synchronization is needed, or these functions must be
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* called from the same thread.
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*/
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int (*cancelBuffer)(struct ANativeWindow* window,
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struct android_native_buffer_t* buffer);
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void* reserved_proc[2];
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};
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// Backwards compatibility... please switch to ANativeWindow.
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typedef struct ANativeWindow android_native_window_t;
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/*
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* native_window_set_usage(..., usage)
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* Sets the intended usage flags for the next buffers
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* acquired with (*lockBuffer)() and on.
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* By default (if this function is never called), a usage of
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* GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE
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* is assumed.
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* Calling this function will usually cause following buffers to be
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* reallocated.
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*/
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static inline int native_window_set_usage(
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ANativeWindow* window, int usage)
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{
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return window->perform(window, NATIVE_WINDOW_SET_USAGE, usage);
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}
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/*
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* native_window_connect(..., NATIVE_WINDOW_API_EGL)
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* Must be called by EGL when the window is made current.
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* Returns -EINVAL if for some reason the window cannot be connected, which
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* can happen if it's connected to some other API.
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*/
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static inline int native_window_connect(
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ANativeWindow* window, int api)
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{
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return window->perform(window, NATIVE_WINDOW_CONNECT, api);
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}
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/*
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* native_window_disconnect(..., NATIVE_WINDOW_API_EGL)
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* Must be called by EGL when the window is made not current.
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* An error is returned if for instance the window wasn't connected in the
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* first place.
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*/
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static inline int native_window_disconnect(
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ANativeWindow* window, int api)
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{
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return window->perform(window, NATIVE_WINDOW_DISCONNECT, api);
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}
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/*
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* native_window_set_crop(..., crop)
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* Sets which region of the next queued buffers needs to be considered.
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* A buffer's crop region is scaled to match the surface's size.
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*
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* The specified crop region applies to all buffers queued after it is called.
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*
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* if 'crop' is NULL, subsequently queued buffers won't be cropped.
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*
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* An error is returned if for instance the crop region is invalid,
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* out of the buffer's bound or if the window is invalid.
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*/
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static inline int native_window_set_crop(
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ANativeWindow* window,
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android_native_rect_t const * crop)
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{
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return window->perform(window, NATIVE_WINDOW_SET_CROP, crop);
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}
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/*
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* native_window_set_buffer_count(..., count)
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* Sets the number of buffers associated with this native window.
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*/
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static inline int native_window_set_buffer_count(
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ANativeWindow* window,
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size_t bufferCount)
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{
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return window->perform(window, NATIVE_WINDOW_SET_BUFFER_COUNT, bufferCount);
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}
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/*
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* native_window_set_buffers_geometry(..., int w, int h, int format)
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* All buffers dequeued after this call will have the geometry specified.
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* In particular, all buffers will have a fixed-size, independent form the
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* native-window size. They will be appropriately scaled to the window-size
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* upon composition.
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*
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* If all parameters are 0, the normal behavior is restored. That is,
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* dequeued buffers following this call will be sized to the window's size.
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*
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* Calling this function will reset the window crop to a NULL value, which
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* disables cropping of the buffers.
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*/
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static inline int native_window_set_buffers_geometry(
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ANativeWindow* window,
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int w, int h, int format)
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{
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return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_GEOMETRY,
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w, h, format);
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}
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/*
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* native_window_set_buffers_transform(..., int transform)
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* All buffers queued after this call will be displayed transformed according
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* to the transform parameter specified.
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*/
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static inline int native_window_set_buffers_transform(
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ANativeWindow* window,
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int transform)
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{
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return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TRANSFORM,
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transform);
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}
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// ---------------------------------------------------------------------------
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/* FIXME: this is legacy for pixmaps */
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typedef struct egl_native_pixmap_t
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{
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int32_t version; /* must be 32 */
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int32_t width;
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int32_t height;
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int32_t stride;
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uint8_t* data;
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uint8_t format;
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uint8_t rfu[3];
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union {
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uint32_t compressedFormat;
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int32_t vstride;
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};
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int32_t reserved;
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} egl_native_pixmap_t;
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/*****************************************************************************/
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#ifdef __cplusplus
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}
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#endif
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/*****************************************************************************/
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#ifdef __cplusplus
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#include <utils/RefBase.h>
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namespace android {
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/*
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* This helper class turns an EGL android_native_xxx type into a C++
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* reference-counted object; with proper type conversions.
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*/
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template <typename NATIVE_TYPE, typename TYPE, typename REF>
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class EGLNativeBase : public NATIVE_TYPE, public REF
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{
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public:
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// Disambiguate between the incStrong in REF and NATIVE_TYPE
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void incStrong(const void* id) const {
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REF::incStrong(id);
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}
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void decStrong(const void* id) const {
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REF::decStrong(id);
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}
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protected:
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typedef EGLNativeBase<NATIVE_TYPE, TYPE, REF> BASE;
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EGLNativeBase() : NATIVE_TYPE(), REF() {
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NATIVE_TYPE::common.incRef = incRef;
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NATIVE_TYPE::common.decRef = decRef;
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}
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static inline TYPE* getSelf(NATIVE_TYPE* self) {
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return static_cast<TYPE*>(self);
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}
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static inline TYPE const* getSelf(NATIVE_TYPE const* self) {
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return static_cast<TYPE const *>(self);
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}
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static inline TYPE* getSelf(android_native_base_t* base) {
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return getSelf(reinterpret_cast<NATIVE_TYPE*>(base));
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}
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static inline TYPE const * getSelf(android_native_base_t const* base) {
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return getSelf(reinterpret_cast<NATIVE_TYPE const*>(base));
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}
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static void incRef(android_native_base_t* base) {
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EGLNativeBase* self = getSelf(base);
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self->incStrong(self);
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}
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static void decRef(android_native_base_t* base) {
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EGLNativeBase* self = getSelf(base);
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self->decStrong(self);
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}
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};
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} // namespace android
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#endif // __cplusplus
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/*****************************************************************************/
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#endif /* ANDROID_ANDROID_NATIVES_H */
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