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first workign implementation of wavelet-based codec

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This commit is contained in:
csoler 2015-08-16 22:59:49 -04:00
parent 49c6c8a1fa
commit d28c1898fd
3 changed files with 519 additions and 13 deletions
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25
plugins/VOIP/gui/VideoProcessor.h
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@ -11,6 +11,9 @@ class VideoCodec
public:
virtual bool encodeData(const QImage& Image, uint32_t size_hint, RsVOIPDataChunk& chunk) = 0;
virtual bool decodeData(const RsVOIPDataChunk& chunk,QImage& image) = 0;
protected:
static const uint32_t HEADER_SIZE = 0x04 ;
};
// Now derive various image encoding/decoding algorithms.
@ -25,7 +28,6 @@ protected:
virtual bool encodeData(const QImage& Image, uint32_t size_hint, RsVOIPDataChunk& chunk) ;
virtual bool decodeData(const RsVOIPDataChunk& chunk,QImage& image) ;
static const uint32_t HEADER_SIZE = 0x04 ;
static const uint32_t JPEG_VIDEO_FLAGS_DIFFERENTIAL_FRAME = 0x0001 ;
private:
QImage _decoded_reference_frame ;
@ -35,17 +37,24 @@ private:
uint32_t _encoded_ref_frame_count ;
};
class DifferentialWaveletVideo: public VideoCodec
class WaveletVideo: public VideoCodec
{
public:
DifferentialWaveletVideo() {}
WaveletVideo() {}
protected:
virtual bool encodeData(const QImage& Image, uint32_t size_hint, RsVOIPDataChunk& chunk) { return true ; }
virtual bool decodeData(const RsVOIPDataChunk& chunk,QImage& image) { return true ; }
virtual bool encodeData(const QImage& Image, uint32_t size_hint, RsVOIPDataChunk& chunk) ;
virtual bool decodeData(const RsVOIPDataChunk& chunk,QImage& image) ;
private:
QImage _last_reference_frame ;
static const int MANTISSE_BITS = 9 ;
static const int EXPONENT_BITS = 6 ;
static void serialise_ufloat(unsigned char *mem, float f);
static float deserialise_ufloat(const unsigned char *mem);
static float from_quantized_16b(uint16_t n, float M);
static uint16_t quantize_16b(float x, float M);
};
// This class decodes video from a stream. It keeps a queue of
@ -106,7 +115,7 @@ class VideoProcessor
// =====================================================================================
JPEGVideo _jpeg_video_codec ;
DifferentialWaveletVideo _ddwt_video_codec ;
WaveletVideo _ddwt_video_codec ;
uint16_t _encoding_current_codec ;
};