xbmc/utils/PCMRemap.h

   1 #ifndef __PCM_REMAP__H__
   2 #define __PCM_REMAP__H__
   3
   4 /*
   5  *      Copyright (C) 2005-2010 Team XBMC
   6  *      http://www.xbmc.org
   7  *
   8  *  This Program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2, or (at your option)
  11  *  any later version.
  12  *
  13  *  This Program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with XBMC; see the file COPYING.  If not, write to
  20  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *  http://www.gnu.org/copyleft/gpl.html
  22  *
  23  */
  24
  25 #include <stdint.h>
  26 #include <vector>
  27 #include "guilib/StdString.h"
  28
  29 #define PCM_MAX_CH 18
  30 enum PCMChannels
  31 {
  32   PCM_INVALID = -1,
  33   PCM_FRONT_LEFT,
  34   PCM_FRONT_RIGHT,
  35   PCM_FRONT_CENTER,
  36   PCM_LOW_FREQUENCY,
  37   PCM_BACK_LEFT,
  38   PCM_BACK_RIGHT,
  39   PCM_FRONT_LEFT_OF_CENTER,
  40   PCM_FRONT_RIGHT_OF_CENTER,
  41   PCM_BACK_CENTER,
  42   PCM_SIDE_LEFT,
  43   PCM_SIDE_RIGHT,
  44   PCM_TOP_FRONT_LEFT,
  45   PCM_TOP_FRONT_RIGHT,
  46   PCM_TOP_FRONT_CENTER,
  47   PCM_TOP_CENTER,
  48   PCM_TOP_BACK_LEFT,
  49   PCM_TOP_BACK_RIGHT,
  50   PCM_TOP_BACK_CENTER
  51 };
  52
  53 #define PCM_MAX_LAYOUT 10
  54 enum PCMLayout
  55 {
  56   PCM_LAYOUT_2_0 = 0,
  57   PCM_LAYOUT_2_1,
  58   PCM_LAYOUT_3_0,
  59   PCM_LAYOUT_3_1,
  60   PCM_LAYOUT_4_0,
  61   PCM_LAYOUT_4_1,
  62   PCM_LAYOUT_5_0,
  63   PCM_LAYOUT_5_1,
  64   PCM_LAYOUT_7_0,
  65   PCM_LAYOUT_7_1
  66 };
  67
  68 struct PCMMapInfo
  69 {
  70   enum  PCMChannels channel;
  71   float level;
  72   bool  ifExists;
  73   int   in_offset;
  74   bool  copy;
  75 };
  76
  77 class CPCMRemap
  78 {
  79 protected:
  80   bool               m_inSet, m_outSet;
  81   enum PCMLayout     m_channelLayout;
  82   unsigned int       m_inChannels, m_outChannels;
  83   unsigned int       m_inSampleSize;
  84   enum PCMChannels   m_inMap [PCM_MAX_CH];
  85   enum PCMChannels   m_outMap[PCM_MAX_CH];
  86   enum PCMChannels   m_layoutMap[PCM_MAX_CH + 1];
  87
  88   bool               m_ignoreLayout;
  89   bool               m_useable  [PCM_MAX_CH];
  90   int                m_inStride, m_outStride;
  91   struct PCMMapInfo  m_lookupMap[PCM_MAX_CH + 1][PCM_MAX_CH + 1];
  92   int                m_counts[PCM_MAX_CH];
  93
  94   struct PCMMapInfo* ResolveChannel(enum PCMChannels channel, float level, bool ifExists, std::vector<enum PCMChannels> path, struct PCMMapInfo *tablePtr);
  95   void               ResolveChannels(); //!< Partial BuildMap(), just enough to see which output channels are active
  96   void               BuildMap();
  97   void               DumpMap(CStdString info, int unsigned channels, enum PCMChannels *channelMap);
  98   void               Dispose();
  99   CStdString         PCMChannelStr(enum PCMChannels ename);
 100   CStdString         PCMLayoutStr(enum PCMLayout ename);
 101 public:
 102
 103   CPCMRemap();
 104   ~CPCMRemap();
 105
 106   void Reset();
 107   enum PCMChannels *SetInputFormat (unsigned int channels, enum PCMChannels *channelMap, unsigned int sampleSize);
 108   void SetOutputFormat(unsigned int channels, enum PCMChannels *channelMap, bool ignoreLayout = false);
 109   void Remap(void *data, void *out, unsigned int samples);
 110   bool CanRemap();
 111   int  InBytesToFrames (int bytes );
 112   int  FramesToOutBytes(int frames);
 113   int  FramesToInBytes (int frames);
 114 };
 115
 116 #endif