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# SPDX-License-Identifier: CECILL-2.1
#=====================================================================#
# HTML pretty display
function Base.show(io::IO, ::MIME"text/html", r::AbstractAudioSource)
print(io, "<audio controls ")
print(io, "src=\"data:audio/wav;base64,")
iob64_encode = Base64EncodePipe(io)
wavwrite(x, iob64_encode, Fs = s, nbits = 8, compression = WAV.WAVE_FORMAT_PCM)
close(iob64_encode)
println(io, "\" />")
end
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#=====================================================================#
# JSON serialization of a manifest item
function Base.show(io::IO, m::MIME"application/json", s::FileAudioSource)
compact = get(io, :compact, false)
indent = get(io, :indent, 0)
printfn = compact ? print : println
printfn(io, "{")
printfn(io, repeat(" ", indent + (compact ? 0 : 2)), "\"type\": \"path\", ")
printfn(io, repeat(" ", indent + (compact ? 0 : 2)), "\"data\": \"", s.path, "\"")
print(io, repeat(" ", indent), "}")
end
function Base.show(io::IO, m::MIME"application/json", s::URLAudioSource)
compact = get(io, :compact, false)
indent = get(io, :indent, 0)
printfn = compact ? print : println
printfn(io, repeat(" ", indent), "{")
printfn(io, repeat(" ", indent + (compact ? 0 : 2)), "\"type\": \"url\", ")
printfn(io, repeat(" ", indent + (compact ? 0 : 2)), "\"data\": \"", s.url, "\"")
print(io, repeat(" ", indent), "}")
end
function Base.show(io::IO, m::MIME"application/json", s::CmdAudioSource)
compact = get(io, :compact, false)
indent = get(io, :indent, 0)
printfn = compact ? print : println
printfn(io, "{")
printfn(io, repeat(" ", indent + (compact ? 0 : 2)), "\"type\": \"cmd\", ")
strcmd = replace("$(s.cmd)", "`" => "")
printfn(io, repeat(" ", indent + (compact ? 0 : 2)), "\"data\": \"$(strcmd)\"")
print(io, repeat(" ", indent), "}")
end
function Base.show(io::IO, m::MIME"application/json", r::Recording)
compact = get(io, :compact, false)
indent = compact ? 0 : 2
printfn = compact ? print : println
printfn(io, "{")
printfn(io, repeat(" ", indent), "\"id\": \"", r.id, "\", ")
print(io, repeat(" ", indent), "\"src\": ")
show(IOContext(io, :indent => compact ? 0 : 2), m, r.source)
printfn(io, ", ")
print(io, repeat(" ", indent), "\"channels\": [")
for (i, c) in enumerate(r.channels)
print(io, c)
i < length(r.channels) && print(io, ",")
end
printfn(io, "], ")
printfn(io, repeat(" ", indent), "\"samplerate\": ", r.samplerate)
print(io, "}")
end
function Base.show(io::IO, m::MIME"application/json", s::Supervision)
compact = get(io, :compact, false)
indent = compact ? 0 : 2
printfn = compact ? print : println
printfn(io, "{")
printfn(io, repeat(" ", indent), "\"id\": \"", s.id, "\", ")
printfn(io, repeat(" ", indent), "\"recording_id\": \"", s.recording_id, "\", ")
printfn(io, repeat(" ", indent), "\"start\": ", s.start, ", ")
printfn(io, repeat(" ", indent), "\"duration\": ", s.duration, ", ")
printfn(io, repeat(" ", indent), "\"channel\": ", s.channel, ", ")
printfn(io, repeat(" ", indent), "\"data\": ", s.data |> json)
print(io, "}")
end
function JSON.json(r::Union{Recording, Supervision}; compact = true)
out = IOBuffer()
show(IOContext(out, :compact => compact), MIME("application/json"), r)
String(take!(out))
end
#=====================================================================#
# Converting a dictionary to a manifest item.
function AudioSource(d::Dict)
if d["type"] == "path"
T = FileAudioSource
elseif d["type"] == "url"
T = URLAudioSource
elseif d["type"] == "cmd"
T = CmdAudioSource
else
throw(ArgumentError("invalid type: $(d["type"])"))
end
T(d["data"])
end
Recording(d::Dict) = Recording(
d["id"],
AudioSource(d["src"]),
convert(Vector{Int}, d["channels"]),
d["samplerate"]
)
Supervision(d::Dict) = Supervision(
d["id"],
d["recording_id"],
d["start"],
d["duration"],
d["channel"],
d["data"]
)
#=====================================================================#
# Writing / reading manifest from file.
function writemanifest(io::IO, manifest::Dict)
writefn = x -> println(io, x)
for item in values(manifest)
item |> json |> writefn
end
end
function readmanifest(io::IO, T)
manifest = Dict()
for line in eachline(io)
item = JSON.parse(line) |> T
manifest[item.id] = item
end
manifest
end
manifestname(T::Type{<:Recording}, subset) = "recording-manifest-$(subset).jsonl"
manifestname(T::Type{<:Supervision}, subset) = "supervision-manifest-$(subset).jsonl"
load(T::Type{<:Union{Recording,Supervision}}, path::AbstractString) =
open(f -> readmanifest(f, T), path, "r")
load(corpus::SpeechCorpus, dir, T, subset) =
load(T, joinpath(path(corpus, dir), manifestname(T, subset)))
load(corpus::SpeechCorpus, T, subset) =
load(corpus, corporadir, T, subset)