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module WaveFileIOTestHelper
CHANNEL_ALIAS = {mono: 1, stereo: 2, tri: 3}
SUPPORTED_BITS_PER_SAMPLE = {
pcm: [8, 16, 24, 32].freeze,
float: [32, 64].freeze,
}.freeze
SQUARE_WAVE_CYCLE = {}
SQUARE_WAVE_CYCLE[:mono] = {}
SQUARE_WAVE_CYCLE[:mono][:pcm_8] = [88, 88, 88, 88, 167, 167, 167, 167]
SQUARE_WAVE_CYCLE[:mono][:pcm_16] = [-10000, -10000, -10000, -10000, 10000, 10000, 10000, 10000]
SQUARE_WAVE_CYCLE[:mono][:pcm_24] = [-1000000, -1000000, -1000000, -1000000, 1000000, 1000000, 1000000, 1000000]
SQUARE_WAVE_CYCLE[:mono][:pcm_32] = [-1000000000, -1000000000, -1000000000, -1000000000,
1000000000, 1000000000, 1000000000, 1000000000]
SQUARE_WAVE_CYCLE[:mono][:float] = [-0.5, -0.5, -0.5, -0.5, 0.5, 0.5, 0.5, 0.5]
SQUARE_WAVE_CYCLE[:mono][:float_32] = [-0.5, -0.5, -0.5, -0.5, 0.5, 0.5, 0.5, 0.5]
SQUARE_WAVE_CYCLE[:mono][:float_64] = SQUARE_WAVE_CYCLE[:mono][:float_32]
SQUARE_WAVE_CYCLE[:stereo] = {}
SQUARE_WAVE_CYCLE[:stereo][:pcm_8] = [[88, 88], [88, 88], [88, 88], [88, 88],
[167, 167], [167, 167], [167, 167], [167, 167]]
SQUARE_WAVE_CYCLE[:stereo][:pcm_16] = [[-10000, -10000], [-10000, -10000], [-10000, -10000], [-10000, -10000],
[10000, 10000], [10000, 10000], [10000, 10000], [10000, 10000]]
SQUARE_WAVE_CYCLE[:stereo][:pcm_24] = [[-1000000, -1000000], [-1000000, -1000000], [-1000000, -1000000], [-1000000, -1000000],
[1000000, 1000000], [1000000, 1000000], [1000000, 1000000], [1000000, 1000000]]
SQUARE_WAVE_CYCLE[:stereo][:pcm_32] = [[-1000000000, -1000000000], [-1000000000, -1000000000],
[-1000000000, -1000000000], [-1000000000, -1000000000],
[ 1000000000, 1000000000], [ 1000000000, 1000000000],
[ 1000000000, 1000000000], [ 1000000000, 1000000000]]
SQUARE_WAVE_CYCLE[:stereo][:float] = [[-0.5, -0.5], [-0.5, -0.5], [-0.5, -0.5], [-0.5, -0.5],
[0.5, 0.5], [0.5, 0.5], [0.5, 0.5], [0.5, 0.5]]
SQUARE_WAVE_CYCLE[:stereo][:float_32] = [[-0.5, -0.5], [-0.5, -0.5], [-0.5, -0.5], [-0.5, -0.5],
[0.5, 0.5], [0.5, 0.5], [0.5, 0.5], [0.5, 0.5]]
SQUARE_WAVE_CYCLE[:stereo][:float_64] = SQUARE_WAVE_CYCLE[:stereo][:float_32]
SQUARE_WAVE_CYCLE[:tri] = {}
SQUARE_WAVE_CYCLE[:tri][:pcm_8] = [[88, 88, 88], [88, 88, 88], [88, 88, 88], [88, 88, 88],
[167, 167, 167], [167, 167, 167], [167, 167, 167], [167, 167, 167]]
SQUARE_WAVE_CYCLE[:tri][:pcm_16] = [[-10000, -10000, -10000], [-10000, -10000, -10000],
[-10000, -10000, -10000], [-10000, -10000, -10000],
[ 10000, 10000, 10000], [ 10000, 10000, 10000],
[ 10000, 10000, 10000], [ 10000, 10000, 10000]]
SQUARE_WAVE_CYCLE[:tri][:pcm_24] = [[-1000000, -1000000, -1000000], [-1000000, -1000000, -1000000],
[-1000000, -1000000, -1000000], [-1000000, -1000000, -1000000],
[ 1000000, 1000000, 1000000], [ 1000000, 1000000, 1000000],
[ 1000000, 1000000, 1000000], [ 1000000, 1000000, 1000000]]
SQUARE_WAVE_CYCLE[:tri][:pcm_32] = [[-1000000000, -1000000000, -1000000000],
[-1000000000, -1000000000, -1000000000],
[-1000000000, -1000000000, -1000000000],
[-1000000000, -1000000000, -1000000000],
[ 1000000000, 1000000000, 1000000000],
[ 1000000000, 1000000000, 1000000000],
[ 1000000000, 1000000000, 1000000000],
[ 1000000000, 1000000000, 1000000000]]
SQUARE_WAVE_CYCLE[:tri][:float] = [[-0.5, -0.5, -0.5], [-0.5, -0.5, -0.5], [-0.5, -0.5, -0.5], [-0.5, -0.5, -0.5],
[0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [0.5, 0.5, 0.5]]
SQUARE_WAVE_CYCLE[:tri][:float_32] = [[-0.5, -0.5, -0.5], [-0.5, -0.5, -0.5], [-0.5, -0.5, -0.5], [-0.5, -0.5, -0.5],
[0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [0.5, 0.5, 0.5]]
SQUARE_WAVE_CYCLE[:tri][:float_64] = SQUARE_WAVE_CYCLE[:tri][:float_32]
# Executes the given block against different combinations of number of channels and sample_format
def exhaustively_test
["", "extensible_"].each do |format_chunk_format|
[:mono, :stereo, :tri].each do |channels|
[:pcm, :float].each do |sample_format|
SUPPORTED_BITS_PER_SAMPLE[sample_format].each do |bits_per_sample|
yield(format_chunk_format, channels, "#{sample_format}_#{bits_per_sample}".to_sym)
end
end
end
end
end
end
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