multichannel output working now

src/PortAudio.jl

@@ -92,8 +92,10 @@ end
 # end
 
 function sinktask(sink::PortAudioSink)
-    println("starting sink task")
     buffer = Array(eltype(sink), sink.bufsize, nchannels(sink))
+    # as of portaudio 19.20140130 (which is the HomeBrew version as of 20160319)
+    # noninterleaved data is not supported for the read/write interface on OSX
+    transbuf = Array(eltype(sink), nchannels(sink), sink.bufsize)
     try
         while sink.open
             total = Pa_GetStreamWriteAvailable(sink.stream)
@@ -101,8 +103,8 @@ function sinktask(sink::PortAudioSink)
             while(written < total)
                 tocopy = min(size(buffer, 1), total - written)
                 read!(sink.ringbuf, sub(buffer, 1:tocopy, :))
-                # TODO: this will only work for mono streams
-                Pa_WriteStream(sink.stream, buffer, tocopy, true)
+                transpose!(transbuf, buffer)
+                Pa_WriteStream(sink.stream, transbuf, tocopy, true)
                 written += tocopy
             end
             sleep(0.005)
@@ -111,7 +113,6 @@ function sinktask(sink::PortAudioSink)
         warn("PortAudio Sink Task died with exception: $ex")
         Base.show_backtrace(STDOUT, catch_backtrace())
     end
-    println("sink task finished")
 end
 
 # function sourcetask(sink::PortAudioSource)

src/libportaudio.jl

@@ -27,36 +27,15 @@ const paInt8    = PaSampleFormat(0x10)
 const paUInt8   = PaSampleFormat(0x20)
 const paNonInterleaved = PaSampleFormat(0x80000000)
 
-const fmt_to_type = Dict{PaSampleFormat, Type}(
-    1  => Float32,
-    2  => Int32,
-    # 4  => Int24,
-    8  => Int16,
-    16 => Int8,
-    32 => UInt8
-)
-
-# const type_to_fmt = Dict{Type, PaSampleFormat}(
-#     Float32 => 1 | paNonInterleaved,
-#     Int32   => 2 | paNonInterleaved,
-#     # Int24   => 4 | paNonInterleaved,
-#     Int16   => 8 | paNonInterleaved,
-#     Int8    => 16 | paNonInterleaved,
-#     UInt8   => 3 | paNonInterleaved
-# )
-#
-
-# TODO: temporary for testing mono
 const type_to_fmt = Dict{Type, PaSampleFormat}(
     Float32 => 1,
     Int32   => 2,
-    # Int24   =>,
+    # Int24   => 4,
     Int16   => 8,
     Int8    => 16,
     UInt8   => 3
 )
 
-
 function Pa_Initialize()
     err = ccall((:Pa_Initialize, libportaudio), PaError, ())
     handle_status(err)