File: convert.test

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# Commands covered: sound convert
#

package require -exact snack 2.2

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test convert-1.1 {convert command, mono->stereo} {
  set s [snack::sound snd -load ex1.wav]
  $s convert -channels 2
  set res [$s sample 0]
  $s destroy
  set res
} {1177 1177}

test convert-1.2 {convert command, Lin16->Mulaw} {
  set s [snack::sound snd -load ex1.wav]
  $s convert -encoding Mulaw
  set res [$s sample 0]
  $s destroy
  set res
} {1180}

test convert-1.3 {convert command, 16kH->32kHz} {
  set s [snack::sound snd -load ex1.wav]
  $s convert -rate 32000
  set res [$s sample 5000]
  $s destroy
  set res
} {1688}

test convert-2.1 {convert command, missing argument for -rate option} {
  set s [snack::sound snd -load ex1.wav]
  catch {$s convert -rate} msg
  $s destroy
  set msg
} {wrong # args: should be "snd convert option value"}

test convert-3.1 {convert command, -progress option} {
  set res ""
  proc prog {msg frac} {
    lappend ::res $frac
  }
  set s [snack::sound snd]
  $s length 100000
  $s convert -encoding Mulaw -progress prog
  $s destroy
  set res
} {0.0 0.99999 1.0}

test convert-4.1 {convert command, testing internal allocation} {
  set s1 [snack::sound snd1]
  set s2 [snack::sound snd2]
  $s1 length 50000
  $s2 copy $s1
  $s1 convert -rate 8000
  $s1 copy $s2
  set res [$s2 sample 5000]
  $s1 destroy
  $s2 destroy
  set res
} {0}

test convert-5.1 {convert command, stereo->mono} {
  set s [snack::sound snd -channels 2]
  $s length 1
  $s convert -channels 1
  set res [$s sample 0]
  $s destroy
  set res
} {0}

# cleanup
::tcltest::cleanupTests
return