diff options
Diffstat (limited to 'plugins/gme/game-music-emu-0.6.0/gme/Spc_Filter.h')
-rw-r--r-- | plugins/gme/game-music-emu-0.6.0/gme/Spc_Filter.h | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/plugins/gme/game-music-emu-0.6.0/gme/Spc_Filter.h b/plugins/gme/game-music-emu-0.6.0/gme/Spc_Filter.h deleted file mode 100644 index 9de56b18..00000000 --- a/plugins/gme/game-music-emu-0.6.0/gme/Spc_Filter.h +++ /dev/null @@ -1,53 +0,0 @@ -// Simple low-pass and high-pass filter to better match sound output of a SNES - -// Game_Music_Emu 0.5.5 -#ifndef SPC_FILTER_H -#define SPC_FILTER_H - -#include "blargg_common.h" - -struct SPC_Filter { -public: - - // Filters count samples of stereo sound in place. Count must be a multiple of 2. - typedef short sample_t; - void run( sample_t* io, int count ); - -// Optional features - - // Clears filter to silence - void clear(); - - // Sets gain (volume), where gain_unit is normal. Gains greater than gain_unit - // are fine, since output is clamped to 16-bit sample range. - enum { gain_unit = 0x100 }; - void set_gain( int gain ); - - // Enables/disables filtering (when disabled, gain is still applied) - void enable( bool b ); - - // Sets amount of bass (logarithmic scale) - enum { bass_none = 0 }; - enum { bass_norm = 8 }; // normal amount - enum { bass_max = 31 }; - void set_bass( int bass ); - -public: - SPC_Filter(); - BLARGG_DISABLE_NOTHROW -private: - enum { gain_bits = 8 }; - int gain; - int bass; - bool enabled; - struct chan_t { int p1, pp1, sum; }; - chan_t ch [2]; -}; - -inline void SPC_Filter::enable( bool b ) { enabled = b; } - -inline void SPC_Filter::set_gain( int g ) { gain = g; } - -inline void SPC_Filter::set_bass( int b ) { bass = b; } - -#endif |