transport.hh

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 // This Source Code Form is licensed MPL-2.0: http://mozilla.org/MPL/2.0
#pragma once
 
#include <ase/defs.hh>
 
namespace Ase {
 
enum class SpeakerArrangement : uint64_t {
  NONE                  =           0,
  FRONT_LEFT            =         0x1,  
  FRONT_RIGHT           =         0x2,  
  FRONT_CENTER          =         0x4,  
  LOW_FREQUENCY         =         0x8,  
  BACK_LEFT             =        0x10,  
  BACK_RIGHT            =        0x20,  
  // WAV reserved       =  0xyyy00000,
  AUX                   = uint64_t (1) << 63,   
  MONO                  = FRONT_LEFT,   
  STEREO                = FRONT_LEFT | FRONT_RIGHT,
  STEREO_21             = STEREO | LOW_FREQUENCY,
  STEREO_30             = STEREO | FRONT_CENTER,
  STEREO_31             = STEREO_30 | LOW_FREQUENCY,
  SURROUND_50           = STEREO_30 | BACK_LEFT | BACK_RIGHT,
  SURROUND_51           = SURROUND_50 | LOW_FREQUENCY,
#if 0 // TODO: dynamic multichannel support
  FRONT_LEFT_OF_CENTER  =        0x40,  
  FRONT_RIGHT_OF_CENTER =        0x80,  
  BACK_CENTER           =       0x100,  
  SIDE_LEFT             =       0x200,  
  SIDE_RIGHT            =       0x400,  
  TOP_CENTER            =       0x800,  
  TOP_FRONT_LEFT        =      0x1000,  
  TOP_FRONT_CENTER      =      0x2000,  
  TOP_FRONT_RIGHT       =      0x4000,  
  TOP_BACK_LEFT         =      0x8000,  
  TOP_BACK_CENTER       =     0x10000,  
  TOP_BACK_RIGHT        =     0x20000,  
  SIDE_SURROUND_50      = STEREO_30 | SIDE_LEFT | SIDE_RIGHT,
  SIDE_SURROUND_51      = SIDE_SURROUND_50 | LOW_FREQUENCY,
#endif
};
constexpr SpeakerArrangement speaker_arrangement_channels_mask { ~size_t (SpeakerArrangement::AUX) };
uint8              speaker_arrangement_count_channels (SpeakerArrangement spa);
SpeakerArrangement speaker_arrangement_channels       (SpeakerArrangement spa);
bool               speaker_arrangement_is_aux         (SpeakerArrangement spa);
const char*        speaker_arrangement_bit_name       (SpeakerArrangement spa);
std::string        speaker_arrangement_desc           (SpeakerArrangement spa);
 
constexpr const int64 TRANSPORT_PPQN = 4838400; // Ticks per quarter note
 
} // Ase