@*********************************************************** @ File: ARM_synth_constants.inc @ Processor: ARM @ Description: Contains constants and defines, most of which @ are mirrored in synth.h @ @ Copyright Sonic Network Inc. 2004 @**************************************************************** @ Revision Control: @ $Revision: 741 $ @ $Date: 2007-06-22 16:39:21 -0700 (Fri, 22 Jun 2007) $ @**************************************************************** .ifdef SAMPLE_RATE_8000 .equ SYNTH_UPDATE_PERIOD_IN_BITS, 5 .equ BUFFER_SIZE_IN_MONO_SAMPLES, 32 .endif .ifdef SAMPLE_RATE_16000 .equ SYNTH_UPDATE_PERIOD_IN_BITS, 6 .equ BUFFER_SIZE_IN_MONO_SAMPLES, 64 .endif .ifdef SAMPLE_RATE_20000 .equ SYNTH_UPDATE_PERIOD_IN_BITS, 7 .equ BUFFER_SIZE_IN_MONO_SAMPLES, 128 .endif .ifdef SAMPLE_RATE_22050 .equ SYNTH_UPDATE_PERIOD_IN_BITS, 7 .equ BUFFER_SIZE_IN_MONO_SAMPLES, 128 .endif .ifdef SAMPLE_RATE_24000 .equ SYNTH_UPDATE_PERIOD_IN_BITS, 7 .equ BUFFER_SIZE_IN_MONO_SAMPLES, 128 .endif .ifdef SAMPLE_RATE_32000 .equ SYNTH_UPDATE_PERIOD_IN_BITS, 7 .equ BUFFER_SIZE_IN_MONO_SAMPLES, 128 .endif .ifdef SAMPLE_RATE_44100 .equ SYNTH_UPDATE_PERIOD_IN_BITS, 8 .equ BUFFER_SIZE_IN_MONO_SAMPLES, 256 .endif .ifdef SAMPLE_RATE_48000 .equ SYNTH_UPDATE_PERIOD_IN_BITS, 8 .equ BUFFER_SIZE_IN_MONO_SAMPLES, 256 .endif @ if the OUTPUT PCM sample is 16-bits, then when using indexed addressing, @ the next sample is this many bytes away .equ NEXT_OUTPUT_PCM, 2 @**************************************************************************** @/* macros for fractional phase accumulator */ .equ NUM_PHASE_FRAC_BITS, 15 .equ PHASE_FRAC_MASK, 0x7FFF @ shift for phase accumulator when fraction carries over .ifdef SAMPLES_8_BIT .equ NEXT_INPUT_PCM_SHIFT, 0 .endif .ifdef SAMPLES_16_BIT .equ NEXT_INPUT_PCM_SHIFT, 1 .endif @**************************************************************************** .equ NUM_MIXER_GUARD_BITS, 4 @**************************************************************************** @/* Envelope 1 (EG1) calculation macros */ .equ NUM_EG1_FRAC_BITS, 15 @**************************************************************************** .equ NUM_ENHANCER_FILTER_COEF_FRAC_BITS, 5 @**************************************************************************** @ @ I've temporarily given up on the idea of getting ADS/RV and gcc to @ handle a struct in a compatible fashion. Switching to old fashion EQU @ .if FILTER_ENABLED @************************************** @ typedef struct s_filter_tag .equ m_z1, 0 .equ m_z2, 2 .endif @************************************** @ typedef struct s_wt_frame_tag .equ m_gainTarget, 0 .equ m_phaseIncrement, 4 .if FILTER_ENABLED .equ m_k, 8 .equ m_b1, 12 .equ m_b2, 16 .equ m_pAudioBuffer, 20 .equ m_pMixBuffer, 24 .equ m_numSamples, 28 .equ m_prevGain, 32 .else .equ m_pAudioBuffer, 8 .equ m_pMixBuffer, 12 .equ m_numSamples, 16 .equ m_prevGain, 20 .endif @************************************** @ typedef struct s_wt_voice_tag .equ m_pLoopEnd, 0 @ /* points to last PCM sample (not 1 beyond last) */ .equ m_pLoopStart, 4 @ /* points to first sample at start of loop */ .equ m_pPhaseAccum, 8 @ /* points to first sample at start of loop */ .equ m_phaseFrac, 12 @ /* points to first sample at start of loop */ .if STEREO_OUTPUT .equ m_gainLeft, 16 @ /* current gain, left ch */ .equ m_gainRight, 18 @ /* current gain, right ch */ .endif @**************************************************************************** @ enhancer .equ m_nEnhancerFeedForward1, 0 .equ m_nEnhancerFeedback1, 1 .equ m_nDriveCoef, 2 .equ m_nEnhancerFeedback2, 3 .equ m_nWet, 4 .equ m_nDry, 5 .equ m_zF0L, 6 @ filter 1 zero state var, left .equ m_zF1L, 8 @ filter 1 pole state var, left .equ m_zF2L, 10 @ filter 2 zero state var, left .equ m_zF0R, 12 @ filter 1 zero state var, right .equ m_zF1R, 14 @ filter 1 pole state var, right .equ m_zF2R, 16 @ filter 2 zero state var, right @****************************************************************************