mirror of
https://github.com/RetroShare/RetroShare.git
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b6089f3b91
- GUI part is done - implemented a very basic JPEG codec - added echo frame in configuration panel - created a video capture object that uses OpenCV (should be cross systems) Remains to do: - serialise and send frames through p3VoRS - use a serious codec (e.g. Theora+x264) - add icons to reflect camera state (failure/working/sending/...) - compilation on windows git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7449 b45a01b8-16f6-495d-af2f-9b41ad6348cc
80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
#pragma once
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#include <stdint.h>
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#include <QImage>
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class QVideoOutputDevice ;
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// This class decodes video from a stream. It keeps a queue of
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// decoded frame that needs to be retrieved using the getNextImage() method.
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//
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class VideoDecoder
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{
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public:
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VideoDecoder() { _output_device = NULL ;}
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// Gets the next image to be displayed. Once returned, the image should
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// be cleared from the incoming queue.
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//
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void setDisplayTarget(QVideoOutputDevice *odev) { _output_device = odev ; }
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virtual void receiveEncodedData(const unsigned char *data,uint32_t size) ;
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private:
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QVideoOutputDevice *_output_device ;
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std::list<QImage> _image_queue ;
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// Incoming data is processed by a video codec and converted into images.
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//
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virtual QImage decodeData(const unsigned char *encoded_image,uint32_t encoded_image_size) = 0 ;
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// This buffer accumulated incoming encoded data, until a full packet is obtained,
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// since the stream might not send images at once. When incoming images are decoded, the
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// data is removed from the buffer.
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//
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unsigned char *buffer ;
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uint32_t buffer_size ;
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};
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// This class encodes video using a video codec (possibly homemade, or based on existing codecs)
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// and produces a data stream that is sent to the network transfer service (e.g. p3VoRs).
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//
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class VideoEncoder
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{
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public:
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VideoEncoder() { _echo_output_device = NULL ;}
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// Takes the next image to be encoded.
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//
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virtual bool addImage(const QImage& Image) ;
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protected:
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//virtual bool sendEncodedData(unsigned char *mem,uint32_t size) = 0 ;
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virtual void encodeData(const QImage& image) = 0 ;
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unsigned char *buffer ;
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uint32_t buffer_size ;
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QVideoOutputDevice *_echo_output_device ;
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};
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// Now derive various image encoding/decoding algorithms.
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//
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class JPEGVideoDecoder: public VideoDecoder
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{
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protected:
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virtual QImage decodeData(const unsigned char *encoded_image,uint32_t encoded_image_size) ;
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};
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class JPEGVideoEncoder: public VideoEncoder
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{
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public:
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JPEGVideoEncoder() {}
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protected:
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virtual void encodeData(const QImage& Image) ;
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};
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