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renderer
StreamConsumer.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2016-2017, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of NVIDIA CORPORATION nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef STREAM_CONSUMER_H
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#define STREAM_CONSUMER_H
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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namespace
ArgusSamples
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{
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/**
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* The stream consumer is connecting to a EGL stream and consumes the frames into a GL texture.
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*/
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class
StreamConsumer
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{
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public
:
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explicit
StreamConsumer
(EGLStreamKHR eglStream);
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~StreamConsumer
();
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bool
initialize
();
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bool
shutdown
();
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bool
isEGLStream
(EGLStreamKHR eglStream)
const
;
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uint32_t
getStreamTextureID
()
const
;
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bool
setStreamAspectRatio
(
float
aspectRatio);
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float
getStreamAspectRatio
()
const
;
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/**
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* @returns the cached stream state
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*/
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EGLint
getStreamState
()
const
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{
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return
m_streamState
;
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}
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/**
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* Check the stream state and acquire a new frame if available
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*
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* @param acquiredNewFrame [out] set to true if a new frame had been acquired
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*/
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bool
acquire
(
bool
*acquiredNewFrame);
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private
:
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bool
m_initialized
;
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EGLStreamKHR
m_eglStream
;
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EGLint
m_streamState
;
///< cached stream state
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uint32_t
m_streamTexture
;
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float
m_aspectRatio
;
///< aspect ration of the images transported by the stream
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/**
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* Hide default constructor
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*/
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StreamConsumer
();
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};
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};
// namespace ArgusSamples
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#endif // STREAM_CONSUMER_H
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