WDL/audiobuffercontainer.h

   1 #ifndef _AUDIOBUFFERCONTAINER_
   2 #define _AUDIOBUFFERCONTAINER_
   3
   4 #include "wdltypes.h"
   5 #include <string.h>
   6 #include <stdlib.h>
   7 #include "ptrlist.h"
   8 #include "queue.h"
   9
  10
  11 #define CHANNELPINMAPPER_MAXPINS 64
  12
  13 class ChannelPinMapper
  14 {
  15 public:
  16
  17   ChannelPinMapper() : m_nCh(0), m_nPins(0) {}
  18   ~ChannelPinMapper() {}
  19
  20   void SetNPins(int nPins);
  21   void SetNChannels(int nCh);
  22   // or ...
  23   void Init(WDL_UINT64* pMapping, int nPins);
  24
  25   int GetNPins() const { return m_nPins; }
  26   int GetNChannels() const { return m_nCh; }
  27
  28   void ClearPin(int pinIdx);
  29   void SetPin(int pinIdx, int chIdx, bool on);
  30   bool TogglePin(int pinIdx, int chIdx);
  31
  32   // true if this pin is mapped to this channel
  33   bool GetPin(int pinIdx, int chIdx) const;
  34   // true if this pin is to any higher channel
  35   bool PinHasMoreMappings(int pinIdx, int chIdx) const;
  36   // true if this mapper is a straight 1:1 passthrough
  37   bool IsStraightPassthrough() const;
  38
  39   char* SaveStateNew(int* pLen); // owned
  40   bool LoadState(const char* buf, int len);
  41
  42   WDL_UINT64 m_mapping[CHANNELPINMAPPER_MAXPINS];
  43
  44 private:
  45
  46   WDL_Queue m_cfgret;
  47   int m_nCh, m_nPins;
  48 };
  49
  50 // converts interleaved buffer to interleaved buffer, using min(len_in,len_out) and zeroing any extra samples
  51 // isInput means it reads from track channels and writes to plugin pins
  52 // wantZeroExcessOutput=false means that untouched channels will be preserved in buf_out
  53 void PinMapperConvertBuffers(const double *buf, int len_in, int nch_in,
  54                              double *buf_out, int len_out, int nch_out,
  55                              const ChannelPinMapper *pinmap, bool isInput, bool wantZeroExcessOutput);
  56
  57 // use for float and double only ... ints will break it
  58 class AudioBufferContainer
  59 {
  60 public:
  61
  62   AudioBufferContainer();
  63   ~AudioBufferContainer() {}
  64
  65   enum
  66   {
  67     FMT_32FP=4,
  68     FMT_64FP=8
  69   };
  70
  71   static bool BufConvert(void* dest, const void* src, int destFmt, int srcFmt, int nFrames, int destStride, int srcStride);
  72
  73   int GetNChannels() const { return m_nCh; }
  74   int GetNFrames() const { return m_nFrames; }
  75   int GetFormat() const { return m_fmt; }
  76
  77   void Resize(int nCh, int nFrames, bool preserveData);
  78   // call Reformat(GetFormat(), false) to discard current data (for efficient repopulating)
  79   void Reformat(int fmt, bool preserveData);
  80
  81   // src=NULL to memset(0)
  82   void* SetAllChannels(int fmt, const void* src, int nCh, int nFrames);
  83
  84   // src=NULL to memset(0)
  85   void* SetChannel(int fmt, const void* src, int chIdx, int nFrames);
  86
  87   void* MixChannel(int fmt, const void* src, int chIdx, int nFrames, bool addToDest, double wt_start, double wt_end);
  88
  89   void* GetAllChannels(int fmt, bool preserveData);
  90   void* GetChannel(int fmt, int chIdx, bool preserveData);
  91
  92   void CopyFrom(const AudioBufferContainer* rhs);
  93
  94 private:
  95
  96   void ReLeave(bool interleave, bool preserveData);
  97
  98   WDL_HeapBuf m_data;
  99   int m_nCh;
 100   int m_nFrames;
 101
 102   int m_fmt;
 103   bool m_interleaved;
 104   bool m_hasData;
 105 } WDL_FIXALIGN;
 106
 107
 108 void SetPinsFromChannels(AudioBufferContainer* dest, AudioBufferContainer* src, const ChannelPinMapper* mapper, int forceMinChanCnt=0);
 109 void SetChannelsFromPins(AudioBufferContainer* dest, AudioBufferContainer* src, const ChannelPinMapper* mapper, double wt_start=1.0, double wt_end=1.0);
 110
 111
 112 #endif