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      1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved.
      2 //
      3 // Licensed under the Apache License, Version 2.0 (the "License");
      4 // you may not use this file except in compliance with the License.
      5 // You may obtain a copy of the License at
      6 //
      7 //    http://www.apache.org/licenses/LICENSE-2.0
      8 //
      9 // Unless required by applicable law or agreed to in writing, software
     10 // distributed under the License is distributed on an "AS IS" BASIS,
     11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 // See the License for the specific language governing permissions and
     13 // limitations under the License.
     14 
     15 #include "FrameBufferAndroid.hpp"
     16 
     17 #include "Common/GrallocAndroid.hpp"
     18 
     19 #include <system/window.h>
     20 
     21 namespace sw
     22 {
     23 	inline int dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer)
     24 	{
     25 		#if ANDROID_PLATFORM_SDK_VERSION > 16
     26 			return native_window_dequeue_buffer_and_wait(window, buffer);
     27 		#else
     28 			return window->dequeueBuffer(window, buffer);
     29 		#endif
     30 	}
     31 
     32 	inline int queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer, int fenceFd)
     33 	{
     34 		#if ANDROID_PLATFORM_SDK_VERSION > 16
     35 			return window->queueBuffer(window, buffer, fenceFd);
     36 		#else
     37 			return window->queueBuffer(window, buffer);
     38 		#endif
     39 	}
     40 
     41 	inline int cancelBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer, int fenceFd)
     42 	{
     43 		#if ANDROID_PLATFORM_SDK_VERSION > 16
     44 			return window->cancelBuffer(window, buffer, fenceFd);
     45 		#else
     46 			return window->cancelBuffer(window, buffer);
     47 		#endif
     48 	}
     49 
     50 	FrameBufferAndroid::FrameBufferAndroid(ANativeWindow* window, int width, int height)
     51 		: FrameBuffer(width, height, false, false),
     52 		  nativeWindow(window), buffer(nullptr)
     53 	{
     54 		nativeWindow->common.incRef(&nativeWindow->common);
     55 		native_window_set_usage(nativeWindow, GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
     56 	}
     57 
     58 	FrameBufferAndroid::~FrameBufferAndroid()
     59 	{
     60 		nativeWindow->common.decRef(&nativeWindow->common);
     61 	}
     62 
     63 	void FrameBufferAndroid::blit(sw::Surface *source, const Rect *sourceRect, const Rect *destRect)
     64 	{
     65 		copy(source);
     66 
     67 		if(buffer)
     68 		{
     69 			if(framebuffer)
     70 			{
     71 				framebuffer = nullptr;
     72 				unlock();
     73 			}
     74 
     75 			queueBuffer(nativeWindow, buffer, -1);
     76 		}
     77 	}
     78 
     79 	void *FrameBufferAndroid::lock()
     80 	{
     81 		if(dequeueBuffer(nativeWindow, &buffer) != 0)
     82 		{
     83 			return nullptr;
     84 		}
     85 
     86 		if(GrallocModule::getInstance()->lock(buffer->handle,
     87 		                 GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
     88 		                 0, 0, buffer->width, buffer->height, &framebuffer) != 0)
     89 		{
     90 			TRACE("%s failed to lock buffer %p", __FUNCTION__, buffer);
     91 			return nullptr;
     92 		}
     93 
     94 		if((buffer->width < width) || (buffer->height < height))
     95 		{
     96 			TRACE("lock failed: buffer of %dx%d too small for window of %dx%d",
     97 			      buffer->width, buffer->height, width, height);
     98 			return nullptr;
     99 		}
    100 
    101 		switch(buffer->format)
    102 		{
    103 		case HAL_PIXEL_FORMAT_RGB_565:   format = FORMAT_R5G6B5; break;
    104 		case HAL_PIXEL_FORMAT_RGBA_8888: format = FORMAT_A8B8G8R8; break;
    105 #if ANDROID_PLATFORM_SDK_VERSION > 16
    106 		case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED: format = FORMAT_X8B8G8R8; break;
    107 #endif
    108 		case HAL_PIXEL_FORMAT_RGBX_8888: format = FORMAT_X8B8G8R8; break;
    109 		case HAL_PIXEL_FORMAT_BGRA_8888: format = FORMAT_A8R8G8B8; break;
    110 		case HAL_PIXEL_FORMAT_RGB_888:
    111 			// Frame buffers are expected to have 16-bit or 32-bit colors, not 24-bit.
    112 			TRACE("Unsupported frame buffer format RGB_888"); ASSERT(false);
    113 			format = FORMAT_R8G8B8;   // Wrong component order.
    114 			break;
    115 		default:
    116 			TRACE("Unsupported frame buffer format %d", buffer->format); ASSERT(false);
    117 			format = FORMAT_NULL;
    118 			break;
    119 		}
    120 
    121 		stride = buffer->stride * Surface::bytes(format);
    122 		return framebuffer;
    123 	}
    124 
    125 	void FrameBufferAndroid::unlock()
    126 	{
    127 		if(!buffer)
    128 		{
    129 			TRACE("%s: badness unlock with no active buffer", __FUNCTION__);
    130 			return;
    131 		}
    132 
    133 		framebuffer = nullptr;
    134 
    135 		if(GrallocModule::getInstance()->unlock(buffer->handle) != 0)
    136 		{
    137 			TRACE("%s: badness unlock failed", __FUNCTION__);
    138 		}
    139 	}
    140 }
    141 
    142 sw::FrameBuffer *createFrameBuffer(void *display, ANativeWindow* window, int width, int height)
    143 {
    144 	return new sw::FrameBufferAndroid(window, width, height);
    145 }
    146