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# Commands covered: sound reverse
#
package require -exact snack 2.2
if {[lsearch [namespace children] ::tcltest] == -1} {
package require tcltest
namespace import ::tcltest::*
}
test reverse-1.1 {reverse command, ex1.wav} {
set s [snack::sound snd -load ex1.wav]
$s reverse -start 5000 -end 10000
set res [list [$s sample 4999] [$s sample 5000] [$s sample 10000] [$s sample 10001]]
$s destroy
set res
} {6384 779 7443 514}
test reverse-1.2 {reverse command, stereo} {
set s [snack::sound snd -channels 2]
$s length 20000
$s sample 5000 17 4711
$s sample 10000 1 2
$s reverse -start 5000 -end 10000
set res [list [$s sample 4999] [$s sample 5000] [$s sample 10000] [$s sample 10001]]
$s destroy
set res
} {{0 0} {1 2} {17 4711} {0 0}}
test reverse-1.3 {reverse command, 3-channel} {
set s [snack::sound snd -channels 3]
$s length 20000
$s sample 5000 17 4711 18
$s sample 10000 1 2 3
$s reverse -start 5000 -end 10000
set res [list [$s sample 4999] [$s sample 5000] [$s sample 10000] [$s sample 10001]]
$s destroy
set res
} {{0 0 0} {1 2 3} {17 4711 18} {0 0 0}}
test reverse-1.4 {reverse command, even length} {
set s [snack::sound snd -channels 2]
$s length 4
$s sample 0 1 2
$s sample 1 3 4
$s sample 2 5 6
$s sample 3 7 8
$s reverse -start 1 -end 2
set res [list [$s sample 0] [$s sample 1] [$s sample 2] [$s sample 3]]
$s destroy
set res
} {{1 2} {5 6} {3 4} {7 8}}
test reverse-1.5 {reverse command, odd length} {
set s [snack::sound snd -channels 2]
$s length 5
$s sample 0 1 2
$s sample 1 3 4
$s sample 2 5 6
$s sample 3 7 8
$s sample 4 9 0
$s reverse -start 1 -end 3
set res [list [$s sample 0] [$s sample 1] [$s sample 2] [$s sample 3] [$s sample 4]]
$s destroy
set res
} {{1 2} {7 8} {5 6} {3 4} {9 0}}
test reverse-1.6 {reverse command, missing -end option} {
set s [snack::sound snd -load ex1.wav]
catch {$s reverse -start 5000 -end} msg
$s destroy
set msg
} {No argument given for -end option}
test reverse-2.1 {reverse command, -progress option} {
set res ""
proc prog {msg frac} {
lappend ::res $frac
}
set s [snack::sound snd -load ex1.wav]
$s reverse -progress prog
$s destroy
set res
} {0.0 1.0}
# cleanup
::tcltest::cleanupTests
return
|
