1 files changed, 123 insertions, 0 deletions
diff --git a/portaudio/src/common/pa_debugprint.c b/portaudio/src/common/pa_debugprint.c
new file mode 100644
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+++ b/portaudio/src/common/pa_debugprint.c
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+/*
+ * $Id: pa_log.c $
+ * Portable Audio I/O Library Multi-Host API front end
+ * Validate function parameters and manage multiple host APIs.
+ *
+ * Based on the Open Source API proposed by Ross Bencina
+ * Copyright (c) 1999-2006 Ross Bencina, Phil Burk
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * The text above constitutes the entire PortAudio license; however,
+ * the PortAudio community also makes the following non-binding requests:
+ *
+ * Any person wishing to distribute modifications to the Software is
+ * requested to send the modifications to the original developer so that
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
+ * license above.
+ */
+
+/** @file
+ @ingroup common_src
+
+ @brief Implements log function.
+
+    PaUtil_SetLogPrintFunction can be user called to replace the provided
+    DefaultLogPrint function, which writes to stderr.
+    One can NOT pass var_args across compiler/dll boundaries as it is not
+    "byte code/abi portable". So the technique used here is to allocate a local
+    a static array, write in it, then callback the user with a pointer to its
+    start.
+*/
+
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "pa_debugprint.h"
+
+// for OutputDebugStringA
+#if defined(_MSC_VER) && defined(PA_ENABLE_MSVC_DEBUG_OUTPUT)
+    #define WIN32_LEAN_AND_MEAN // exclude rare headers
+    #include "windows.h"
+#endif
+
+// User callback
+static PaUtilLogCallback userCB = NULL;
+
+// Sets user callback
+void PaUtil_SetDebugPrintFunction(PaUtilLogCallback cb)
+{
+    userCB = cb;
+}
+
+/*
+ If your platform doesn't have vsnprintf, you are stuck with a
+ VERY dangerous alternative, vsprintf (with no n)
+*/
+#if _MSC_VER
+    /* Some Windows Mobile SDKs don't define vsnprintf but all define _vsnprintf (hopefully).
+       According to MSDN "vsnprintf is identical to _vsnprintf". So we use _vsnprintf with MSC.
+    */
+    #define VSNPRINTF  _vsnprintf
+#else
+    #define VSNPRINTF  vsnprintf
+#endif
+
+#define PA_LOG_BUF_SIZE 2048
+
+void PaUtil_DebugPrint( const char *format, ... )
+{
+    // Optional logging into Output console of Visual Studio
+#if defined(_MSC_VER) && defined(PA_ENABLE_MSVC_DEBUG_OUTPUT)
+    {
+        char buf[PA_LOG_BUF_SIZE];
+        va_list ap;
+        va_start(ap, format);
+        VSNPRINTF(buf, sizeof(buf), format, ap);
+        buf[sizeof(buf)-1] = 0;
+        OutputDebugStringA(buf);
+        va_end(ap);
+    }
+#endif
+
+    // Output to User-Callback
+    if (userCB != NULL)
+    {
+        char strdump[PA_LOG_BUF_SIZE];
+        va_list ap;
+        va_start(ap, format);
+        VSNPRINTF(strdump, sizeof(strdump), format, ap);
+        strdump[sizeof(strdump)-1] = 0;
+        userCB(strdump);
+        va_end(ap);
+    }
+    else
+    // Standard output to stderr
+    {
+        va_list ap;
+        va_start(ap, format);
+        vfprintf(stderr, format, ap);
+        va_end(ap);
+        fflush(stderr);
+    }
+}