90 lines
2.7 KiB
Fortran
90 lines
2.7 KiB
Fortran
module soundbrotch
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implicit none
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! ---------------------------------------------------------
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type t_sample2i
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integer :: left
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integer :: right
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end type
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type t_sample2r
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real :: left
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real :: right
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end type
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! ---------------------------------------------------------
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! some private variables
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integer, private :: samplerate = 48000
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real, private :: diapason = 440.0
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contains
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! ---------------------------------------------------------
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subroutine soundbrotch_version ()
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write(0, '(1X,A)') "--- this is soundbrotch version alpha 667"
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write(0, *) "--- samplerate", samplerate
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write(0, *) "--- diapason ", diapason
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end subroutine
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! ---------------------------------------------------------
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! ---------------------------------------------------------
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! premier essai, le prototype peut changer !
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subroutine sinw_burst2i (dst, numbs, fra, frb, level)
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integer, intent(in) :: dst ! output unit number
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integer, intent(in) :: numbs ! number of sample to be made
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real, intent(in) :: fra, frb ! left and right frequency
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real, intent(in) :: level ! amplitude in [0..1]
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integer :: idx, left, right
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real :: coef
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! XXX temporary dirty hack
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if (dst .NE. 6) then
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STOP ' OUPS, NOT ON STDOUT!'
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endif
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coef = (3.141592654 * 2.0) / real(samplerate)
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do idx=0, numbs
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left = INT(32e3 * level * sin(coef*real(idx)*fra))
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right = INT(32e3 * level * sin(coef*real(idx)*frb))
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call xper_spit_2i(left, right)
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enddo
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end subroutine
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! ---------------------------------------------------------
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! mmmm ?
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subroutine silence_burst2i(nbsmpl)
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integer, intent(in) :: nbsmpl
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integer :: idx
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do idx=0, nbsmpl
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call xper_spit_2i(0, 0)
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enddo
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end subroutine
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! ---------------------------------------------------------
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! mmmm ?
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subroutine xper_spit_2i(lsmpl, rsmpl)
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integer, intent(in) :: lsmpl, rsmpl
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integer, save :: oldl, oldr
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integer :: tmpl, tmpr
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tmpl = (lsmpl + oldl) / 2
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tmpr = (rsmpl + oldr) / 2
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print *, tmpl, tmpr
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oldl = tmpl
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oldr = tmpr
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end subroutine
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! ---------------------------------------------------------
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!
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function midi2freq(note)
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integer, intent(in) :: note
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real :: midi2freq
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real :: freq
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freq = (DIAPASON/32.0) * (2.0 ** (real(note - 9) / 12.0));
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! write(0, *) "> ", note, freq
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midi2freq = freq
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end function
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end module
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