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authorGuenter Geiger <ggeiger@users.sourceforge.net>2003-05-09 16:04:00 +0000
committerGuenter Geiger <ggeiger@users.sourceforge.net>2003-05-09 16:04:00 +0000
commit9c0e19a3be2288db79e2502e5fa450c3e20a668d (patch)
treeca97ce615e037a533304fc4660dcf372ca3b9cd6 /pd/portaudio/docs/releases.html
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+<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
+<html>
+<head>
+ <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+ <meta name="GENERATOR" content="Mozilla/4.79 [en] (Windows NT 5.0; U) [Netscape]">
+ <meta name="Author" content="Phil Burk">
+ <meta name="Description" content="PortAudio is a cross platform, open-source, audio I/O library.It provides a very simple API for recording and/or playing sound using a simple callback function.">
+ <meta name="KeyWords" content="audio, library, portable, open-source, DirectSound,sound, music, JSyn, synthesis,">
+ <title>PortAudio Release Notes</title>
+</head>
+<body>
+&nbsp;
+<center><table COLS=1 WIDTH="100%" BGCOLOR="#FADA7A" >
+<tr>
+<td>
+<center>
+<h1>
+PortAudio - Release Notes</h1></center>
+</td>
+</tr>
+</table></center>
+
+<p>Link to <a href="http://www.portaudio.com">PortAudio Home Page</a>
+<h2>
+<b>V18 - 5/6/02</b></h2>
+
+<blockquote>All source code and documentation now under <a href="http://www.portaudio.com/usingcvs.html">CVS</a>.
+<p>Ran most of the code through <a href="http://astyle.sourceforge.net/">AStyle</a>
+to cleanup ragged indentation caused by using different editors. Used this
+command:
+<br><tt>&nbsp;&nbsp; astyle --style=ansi -c -o --convert-tabs --indent-preprocessor
+*.c</tt></blockquote>
+
+<blockquote>Added "pa_common/pa_convert.c" for Mac OS X. Start of new conversion
+utilities.
+<p><b>ASIO</b>
+<ul>
+<li>
+New Pa_ASIO_Adaptor_Init function to init Callback adpatation variables,</li>
+
+<li>
+Cleanup of Pa_ASIO_Callback_Input</li>
+
+<li>
+Break apart device loading to debug random failure in Pa_ASIO_QueryDeviceInfo</li>
+
+<li>
+Deallocate all resources in PaHost_Term for cases where Pa_CloseStream
+is not called properly</li>
+
+<li>
+New Pa_ASIO_loadDriver that calls CoInitialize on each thread on Windows.
+Allows use by multiple threads.</li>
+
+<li>
+Correct error code management in PaHost_Term, removed various compiler
+warning</li>
+
+<li>
+Add Mac includes for &lt;Devices.h> and &lt;Timer.h></li>
+
+<li>
+Pa_ASIO_QueryDeviceInfo bug correction, memory allocation checking, better
+error handling</li>
+</ul>
+<b>Mac OS X</b>
+<ul>
+<li>
+Major cleanup and improvements.</li>
+
+<li>
+Fixed device queries for numChannels and sampleRates,</li>
+
+<li>
+Audio input works if using same CoreAudio device (some HW devices make
+separate CoreAudio devices).</li>
+
+<li>
+Added paInt16, paInt8, format using new "pa_common/pa_convert.c" file.</li>
+
+<li>
+Return error if opened in mono mode cuz not supported.</li>
+
+<li>
+Check for getenv("PA_MIN_LATEWNCY_MSEC") to set latency externally.</li>
+
+<li>
+Use getrusage() instead of gettimeofday() for CPU Load calculation.</li>
+</ul>
+<b>Windows MME</b>
+<ul>
+<li>
+Fixed bug that caused TIMEOUT in Pa_StopStream(). Added check for past_StopSoon()
+in Pa_TimeSlice(). Thanks Julien Maillard.</li>
+
+<li>
+Detect Win XP versus NT, use lower latency.</li>
+
+<li>
+Fix DBUG typo;</li>
+
+<li>
+removed init of CurrentCount which was not compiling on Borland</li>
+
+<li>
+general cleanup, factored streamData alloc and cpu usage initialization</li>
+
+<li>
+stopped counting WAVE_MAPPER when there were no audio cards plugged in</li>
+</ul>
+<b>Windows DirectSound</b>
+<ul>
+<li>
+Detect Win XP and Win 2K properly when determining latency.</li>
+</ul>
+<b>Unix OSS</b>
+<ul>
+<li>
+Use high real-time priority if app is running with root priveledges. Lowers
+latency.</li>
+
+<li>
+Added watch dog thread that prevents real-time thread from hogging CPU
+and hanging the computer.</li>
+
+<li>
+Check error return from read() and write().</li>
+
+<li>
+Check CPU endianness instead of assuming Little Endian.</li>
+</ul>
+</blockquote>
+
+<h2>
+<b>V17 - 10/15/01</b></h2>
+
+<blockquote><b>Unix OSS</b>
+<ul>
+<li>
+Set num channels back to two after device query for ALSA. This fixed a
+bug in V16 that sometimes caused a failure when querying for the sample
+rates. Thanks Stweart Greenhill.</li>
+</ul>
+</blockquote>
+
+<blockquote>
+<h4>
+<b>Macintosh Sound Manager</b></h4>
+
+<ul>
+<li>
+Use NewSndCallBackUPP() for CARBON compatibility.</li>
+</ul>
+</blockquote>
+
+<h2>
+<b>V16 - 9/27/01</b></h2>
+
+<blockquote><b>Added Alpha implementations for ASIO, SGI, and BeOS!</b>
+<br>&nbsp;
+<li>
+CPULoad is now calculated based on the time spent to generate a known number
+of frames. This is more accurate than a simple percentage of real-time.
+Implemented in pa_unix_oss, pa_win_wmme and pa_win_ds.</li>
+
+<li>
+Fix dither and shift for recording PaUInt8 format data.</li>
+
+<li>
+Added "patest_maxsines.c" which tests <tt>Pa_GetCPULoad().</tt></li>
+</blockquote>
+
+<blockquote>
+<h4>
+Windows WMME</h4>
+
+<ul>
+<li>
+sDevicePtrs now allocated using <tt>GlobalAlloc()</tt>. This prevents a
+crash in Pa_Terminate() on Win2000. Thanks Mike Berry for finding this.
+Thanks Mike Berry.</li>
+
+<li>
+Pass process instead of thread to <tt>SetPriorityClass</tt>(). This fixes
+a bug that caused the priority to not be increased. Thanks to Alberto di
+Bene for spotting this.</li>
+</ul>
+
+<h4>
+Windows DirectSound</h4>
+
+<ul>
+<li>
+Casts for compiling with __MWERKS__ CodeWarrior.</li>
+</ul>
+
+<h4>
+UNIX OSS</h4>
+
+<ul>
+<li>
+Derived from Linux OSS implementation.</li>
+
+<li>
+Numerous patches from Heiko Purnhagen, Stephen Brandon, etc.</li>
+
+<li>
+Improved query mechanism which often bailed out unnecessarily.</li>
+
+<li>
+Removed sNumDevices and potential related bugs,</li>
+
+<li>
+Use <tt>getenv("PA_MIN_LATENCY_MSEC")</tt> in code to set desired latency.
+User can set by entering:</li>
+
+<br>&nbsp;&nbsp;&nbsp; <tt>export PA_MIN_LATENCY_MSEC=40</tt></ul>
+
+<h4>
+Macintosh Sound Manager</h4>
+
+<ul>
+<li>
+Pass unused event to WaitNextEvent instead of NULL to prevent Mac OSX crash.
+Thanks Dominic Mazzoni.</li>
+
+<li>
+Use requested number of input channels.</li>
+
+<br>&nbsp;</ul>
+</blockquote>
+
+<h2>
+<b>V15 - 5/29/01</b></h2>
+
+<blockquote>
+<ul>
+<li>
+<b>New Linux OSS Beta</b></li>
+</ul>
+
+<h4>
+Windows WMME</h4>
+
+<ul>
+<li>
+&nbsp;sDevicePtrs now allocated based on sizeof(pointer). Was allocating
+too much space.</li>
+
+<li>
+&nbsp;Check for excessive numbers of channels. Some drivers reported bogus
+numbers.</li>
+
+<li>
+Apply Mike Berry's changes for CodeWarrior on PC including condition including
+of memory.h, and explicit typecasting on memory allocation.</li>
+</ul>
+
+<h4>
+Macintosh Sound Manager</h4>
+
+<ul>
+<li>
+ScanInputDevices was setting sDefaultOutputDeviceID instead of sDefaultInputDeviceID.</li>
+
+<li>
+Device Scan was crashing for anything other than siBadSoundInDevice, but
+some Macs may return other errors! Caused failure to init on some G4s under
+OS9.</li>
+
+<li>
+Fix TIMEOUT in record mode.</li>
+
+<li>
+Change CARBON_COMPATIBLE to TARGET_API_MAC_CARBON</li>
+</ul>
+</blockquote>
+
+<h2>
+<b>V14 - 2/6/01</b></h2>
+
+<blockquote>
+<ul>
+<li>
+Added implementation for Windows MultiMedia Extensions (WMME) by Ross and
+Phil</li>
+
+<li>
+Changed Pa_StopStream() so that it waits for the buffers to drain.</li>
+
+<li>
+Added Pa_AbortStream() that stops immediately without waiting.</li>
+
+<li>
+Added new test: patest_stop.c to test above two mods.</li>
+
+<li>
+Fixed Pa_StreamTime() so that it returns current play position instead
+of the write position. Added "patest_sync.c" to demo audio/video sync.</li>
+
+<li>
+Improved stability of Macintosh implementation. Added timeouts to prevent
+hangs.</li>
+
+<li>
+Added Pa_GetSampleSize( PaSampleFormat format );</li>
+
+<li>
+Changes some "int"s to "long"s so that PA works properly on Macintosh which
+often compiles using 16 bit ints.</li>
+
+<li>
+Added Implementation Guide</li>
+</ul>
+</blockquote>
+
+<h2>
+<b>V12 - 1/9/01</b></h2>
+
+<blockquote>
+<ul>
+<li>
+Mac now scans for and queries all devices. But it does not yet support
+selecting any other than the default device.</li>
+
+<li>
+Blocking I/O calls renamed to separate them from the PortAudio API.</li>
+
+<li>
+Cleaned up indentation problems with tabs versus spaces.</li>
+
+<li>
+Now attempts to correct bogus sample rate info returned from DirectSound
+device queries.</li>
+</ul>
+</blockquote>
+
+</body>
+</html>