rgbpix: buffered write un production
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#
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# * Fortraneries from tTh *
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#
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# Makefile for the general purpose moduls
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# Makefile for the general purpose modules
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#
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GFOPT = -Wall -Wextra -g -I.
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@ -1,8 +1,5 @@
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# General purpose modules
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## Compiler un module
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Mmmmm...
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## Modules disponibles
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@ -13,7 +10,9 @@ Write gray level 2d buffer (aka picture) to disk in the NetPNM format.
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### pixrgb
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Write 8 bits RGB pictures to PNM format.
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Write 8 bits or 16 bits RGB pictures to PNM format.
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**Warning!** The width of the picture MUST be a multiple of 4 !
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### trials
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@ -21,8 +20,16 @@ Experimental WIPs from hell.
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### dummy
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A "do nothing" useless module. But you cas use it to fool an optimizing
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compiler, or have a sane place to put a breakpoint with gdb
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A "do nothing" useless module.
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But you cas use it to fool an optimizing compiler,
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or have a sane place to put a breakpoint with gdb
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## Compiler un module
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You can use the same options as for a main program.
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And when you use the module, you have to specify the paths
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for the .mod and the .o to the linker.
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See [Makefile](./Makefile) for an example.
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## TODO
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@ -11,8 +11,8 @@ program chkpixels
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implicit none
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write(0, *) "------ CHKPIXELS ------"
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call test_spit_as(3)
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call test_spit_rgb(128, 222)
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! call test_spit_gray(3)
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call test_spit_rgb16(1100, 512)
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STOP 'BECAUSE NO CPU AVAILABLE'
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@ -21,7 +21,7 @@ contains
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!-
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! exerciser for the 'pixrgb' module
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!-
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subroutine test_spit_rgb(sz, kg)
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subroutine test_spit_rgb16(sz, kg)
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integer, intent(in) :: sz, kg
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type(t_pixrgb), allocatable :: pixrgb(:,:)
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@ -30,15 +30,17 @@ contains
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print *, "test spit rgb", sz
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allocate(pixrgb(sz, sz))
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call rgbpix_set_to_zero(pixrgb)
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do ix=1, sz
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do iy=1, sz
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pixrgb(ix, iy)%r = ix
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pixrgb(ix, iy)%g = mod(ix*iy, kg)
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pixrgb(ix, iy)%b = iy
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pixrgb(ix, iy)%r = mod(ix * iy, 65000)
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if (ix.EQ.iy) pixrgb(ix, iy)%g = 65000
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pixrgb(ix, iy)%b = mod ((ix*iy) * 13, 65000)
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end do
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end do
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call rgbpix_spit_as_pnm_8(pixrgb, "rgb8.pnm")
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call rgbpix_spit_as_pnm_16(pixrgb, "rgb16.pnm")
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call rgbpix_spit_as_pnm_16 (pixrgb, "current-rgb16.pnm")
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call new_spit_rgb16 (pixrgb, "experiment-rgb16.pnm")
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deallocate(pixrgb)
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end subroutine
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@ -16,6 +16,8 @@ end type
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contains
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!-------------------------------------------------------------------
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!-
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! try FORALL here
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!-
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subroutine rgbpix_set_to_zero(pic)
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type(t_pixrgb), intent(out) :: pic(:,:)
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integer :: ix, iy
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@ -88,7 +90,7 @@ end subroutine
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!-
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! CAUTION: there was NO out-of-bounds check !
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!-
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subroutine rgbpix_spit_as_pnm_16(pic, fname)
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subroutine rgbpix_spit_as_pnm_16_old(pic, fname)
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type(t_pixrgb), intent(in) :: pic(:,:)
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character (len=*), intent(in) :: fname
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@ -111,4 +113,51 @@ subroutine rgbpix_spit_as_pnm_16(pic, fname)
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end subroutine
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!-------------------------------------------------------------------
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end module
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!-
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! CAUTION: there was NO out-of-bounds check !
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!-
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subroutine rgbpix_spit_as_pnm_16(pic, fname)
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type(t_pixrgb), intent(in) :: pic(:,:)
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character (len=*), intent(in) :: fname
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integer :: io, ix, iy, ik
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integer :: buffer(3*4), ptr
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! write(0, *) ">>> subroutine rgbpix_spit_as_pnm_16"
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open(newunit=io, file=fname)
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write (io, '(a2)') "P3"
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write (io, '("# rgbpix_spit_as_pnm_16")')
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write (io, '(i0," ",i0)') size(pic, 1), size(pic, 2)
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write (io, '(i0)') 65535
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buffer = 0
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ptr = 1
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do iy=1, ubound(pic, 2)
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do ix=1, ubound(pic, 1)
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buffer(ptr) = pic(ix, iy)%r
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buffer(ptr+1) = pic(ix, iy)%g
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buffer(ptr+2) = pic(ix, iy)%b
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ptr = ptr + 3
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if (ptr .EQ. 13) then
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write(io, "(i0, 11(' ', i0))") buffer
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ptr = 1
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endif
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enddo ! write(io, *) " fin iy=", iy
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enddo
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! may be we have to flush the buffer ?
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close(unit=io)
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end subroutine
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!-------------------------------------------------------------------
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end module
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@ -94,3 +94,4 @@ end subroutine
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!-------------------------------------------------------------------
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end module
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