diff options
Diffstat (limited to 'plugins/gme/Game_Music_Emu-0.5.2/gme/Multi_Buffer.h')
-rw-r--r-- | plugins/gme/Game_Music_Emu-0.5.2/gme/Multi_Buffer.h | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/plugins/gme/Game_Music_Emu-0.5.2/gme/Multi_Buffer.h b/plugins/gme/Game_Music_Emu-0.5.2/gme/Multi_Buffer.h deleted file mode 100644 index a39cca1a..00000000 --- a/plugins/gme/Game_Music_Emu-0.5.2/gme/Multi_Buffer.h +++ /dev/null @@ -1,156 +0,0 @@ -// Multi-channel sound buffer interface, and basic mono and stereo buffers - -// Blip_Buffer 0.4.1 -#ifndef MULTI_BUFFER_H -#define MULTI_BUFFER_H - -#include "blargg_common.h" -#include "Blip_Buffer.h" - -// Interface to one or more Blip_Buffers mapped to one or more channels -// consisting of left, center, and right buffers. -class Multi_Buffer { -public: - Multi_Buffer( int samples_per_frame ); - virtual ~Multi_Buffer() { } - - // Set the number of channels available - virtual blargg_err_t set_channel_count( int ); - - // Get indexed channel, from 0 to channel count - 1 - struct channel_t { - Blip_Buffer* center; - Blip_Buffer* left; - Blip_Buffer* right; - }; - enum { type_index_mask = 0xFF }; - enum { wave_type = 0x100, noise_type = 0x200, mixed_type = wave_type | noise_type }; - virtual channel_t channel( int index, int type ) = 0; - - // See Blip_Buffer.h - virtual blargg_err_t set_sample_rate( long rate, int msec = blip_default_length ) = 0; - virtual void clock_rate( long ) = 0; - virtual void bass_freq( int ) = 0; - virtual void clear() = 0; - long sample_rate() const; - - // Length of buffer, in milliseconds - int length() const; - - // See Blip_Buffer.h - virtual void end_frame( blip_time_t ) = 0; - - // Number of samples per output frame (1 = mono, 2 = stereo) - int samples_per_frame() const; - - // Count of changes to channel configuration. Incremented whenever - // a change is made to any of the Blip_Buffers for any channel. - unsigned channels_changed_count() { return channels_changed_count_; } - - // See Blip_Buffer.h - virtual long read_samples( blip_sample_t*, long ) = 0; - virtual long samples_avail() const = 0; - -public: - BLARGG_DISABLE_NOTHROW -protected: - void channels_changed() { channels_changed_count_++; } -private: - // noncopyable - Multi_Buffer( const Multi_Buffer& ); - Multi_Buffer& operator = ( const Multi_Buffer& ); - - unsigned channels_changed_count_; - long sample_rate_; - int length_; - int const samples_per_frame_; -}; - -// Uses a single buffer and outputs mono samples. -class Mono_Buffer : public Multi_Buffer { - Blip_Buffer buf; - channel_t chan; -public: - // Buffer used for all channels - Blip_Buffer* center() { return &buf; } - -public: - Mono_Buffer(); - ~Mono_Buffer(); - blargg_err_t set_sample_rate( long rate, int msec = blip_default_length ); - void clock_rate( long rate ) { buf.clock_rate( rate ); } - void bass_freq( int freq ) { buf.bass_freq( freq ); } - void clear() { buf.clear(); } - long samples_avail() const { return buf.samples_avail(); } - long read_samples( blip_sample_t* p, long s ) { return buf.read_samples( p, s ); } - channel_t channel( int, int ) { return chan; } - void end_frame( blip_time_t t ) { buf.end_frame( t ); } -}; - -// Uses three buffers (one for center) and outputs stereo sample pairs. -class Stereo_Buffer : public Multi_Buffer { -public: - - // Buffers used for all channels - Blip_Buffer* center() { return &bufs [0]; } - Blip_Buffer* left() { return &bufs [1]; } - Blip_Buffer* right() { return &bufs [2]; } - -public: - Stereo_Buffer(); - ~Stereo_Buffer(); - blargg_err_t set_sample_rate( long, int msec = blip_default_length ); - void clock_rate( long ); - void bass_freq( int ); - void clear(); - channel_t channel( int, int ) { return chan; } - void end_frame( blip_time_t ); - - long samples_avail() const { return bufs [0].samples_avail() * 2; } - long read_samples( blip_sample_t*, long ); - -private: - enum { buf_count = 3 }; - Blip_Buffer bufs [buf_count]; - channel_t chan; - int stereo_added; - int was_stereo; - - void mix_stereo_no_center( blip_sample_t*, blargg_long ); - void mix_stereo( blip_sample_t*, blargg_long ); - void mix_mono( blip_sample_t*, blargg_long ); -}; - -// Silent_Buffer generates no samples, useful where no sound is wanted -class Silent_Buffer : public Multi_Buffer { - channel_t chan; -public: - Silent_Buffer(); - blargg_err_t set_sample_rate( long rate, int msec = blip_default_length ) - { - return Multi_Buffer::set_sample_rate( rate, msec ); - } - void clock_rate( long ) { } - void bass_freq( int ) { } - void clear() { } - channel_t channel( int, int ) { return chan; } - void end_frame( blip_time_t ) { } - long samples_avail() const { return 0; } - long read_samples( blip_sample_t*, long ) { return 0; } -}; - - -inline blargg_err_t Multi_Buffer::set_sample_rate( long rate, int msec ) -{ - sample_rate_ = rate; - length_ = msec; - return 0; -} - -inline int Multi_Buffer::samples_per_frame() const { return samples_per_frame_; } - -inline long Multi_Buffer::sample_rate() const { return sample_rate_; } - -inline int Multi_Buffer::length() const { return length_; } - -#endif |