add initial structure

1 files changed, 204 insertions, 0 deletions

diff --git a/portaudio/examples/paex_read_write_wire.c b/portaudio/examples/paex_read_write_wire.c
new file mode 100644
index 0000000..b5046af
--- /dev/null
+++ b/portaudio/examples/paex_read_write_wire.c
@@ -0,0 +1,204 @@
+/** @file paex_read_write_wire.c
+    @ingroup examples_src
+    @brief Tests full duplex blocking I/O by passing input straight to output.
+    @author Bjorn Roche. XO Audio LLC for Z-Systems Engineering.
+    @author based on code by: Phil Burk  http://www.softsynth.com
+    @author based on code by: Ross Bencina rossb@audiomulch.com
+*/
+/*
+ * $Id: patest_read_record.c 757 2004-02-13 07:48:10Z rossbencina $
+ *
+ * This program uses the PortAudio Portable Audio Library.
+ * For more information see: http://www.portaudio.com
+ * Copyright (c) 1999-2000 Ross Bencina and 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "portaudio.h"
+
+/* #define SAMPLE_RATE  (17932) // Test failure to open with this value. */
+#define SAMPLE_RATE       (44100)
+#define FRAMES_PER_BUFFER   (512)
+#define NUM_SECONDS          (10)
+/* #define DITHER_FLAG     (paDitherOff)  */
+#define DITHER_FLAG           (0)
+
+/* Select sample format. */
+#if 1
+#define PA_SAMPLE_TYPE  paFloat32
+#define SAMPLE_SIZE (4)
+#define SAMPLE_SILENCE  (0.0f)
+#define PRINTF_S_FORMAT "%.8f"
+#elif 0
+#define PA_SAMPLE_TYPE  paInt16
+#define SAMPLE_SIZE (2)
+#define SAMPLE_SILENCE  (0)
+#define PRINTF_S_FORMAT "%d"
+#elif 0
+#define PA_SAMPLE_TYPE  paInt24
+#define SAMPLE_SIZE (3)
+#define SAMPLE_SILENCE  (0)
+#define PRINTF_S_FORMAT "%d"
+#elif 0
+#define PA_SAMPLE_TYPE  paInt8
+#define SAMPLE_SIZE (1)
+#define SAMPLE_SILENCE  (0)
+#define PRINTF_S_FORMAT "%d"
+#else
+#define PA_SAMPLE_TYPE  paUInt8
+#define SAMPLE_SIZE (1)
+#define SAMPLE_SILENCE  (128)
+#define PRINTF_S_FORMAT "%d"
+#endif
+
+/*******************************************************************/
+int main(void);
+int main(void)
+{
+    PaStreamParameters inputParameters, outputParameters;
+    PaStream *stream = NULL;
+    PaError err;
+    const PaDeviceInfo* inputInfo;
+    const PaDeviceInfo* outputInfo;
+    char *sampleBlock = NULL;
+    int i;
+    int numBytes;
+    int numChannels;
+
+    printf("patest_read_write_wire.c\n"); fflush(stdout);
+    printf("sizeof(int) = %lu\n", sizeof(int)); fflush(stdout);
+    printf("sizeof(long) = %lu\n", sizeof(long)); fflush(stdout);
+
+    err = Pa_Initialize();
+    if( err != paNoError ) goto error2;
+
+    inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
+    printf( "Input device # %d.\n", inputParameters.device );
+    inputInfo = Pa_GetDeviceInfo( inputParameters.device );
+    printf( "    Name: %s\n", inputInfo->name );
+    printf( "      LL: %g s\n", inputInfo->defaultLowInputLatency );
+    printf( "      HL: %g s\n", inputInfo->defaultHighInputLatency );
+
+    outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
+    printf( "Output device # %d.\n", outputParameters.device );
+    outputInfo = Pa_GetDeviceInfo( outputParameters.device );
+    printf( "   Name: %s\n", outputInfo->name );
+    printf( "     LL: %g s\n", outputInfo->defaultLowOutputLatency );
+    printf( "     HL: %g s\n", outputInfo->defaultHighOutputLatency );
+
+    numChannels = inputInfo->maxInputChannels < outputInfo->maxOutputChannels
+            ? inputInfo->maxInputChannels : outputInfo->maxOutputChannels;
+    printf( "Num channels = %d.\n", numChannels );
+
+    inputParameters.channelCount = numChannels;
+    inputParameters.sampleFormat = PA_SAMPLE_TYPE;
+    inputParameters.suggestedLatency = inputInfo->defaultHighInputLatency ;
+    inputParameters.hostApiSpecificStreamInfo = NULL;
+
+    outputParameters.channelCount = numChannels;
+    outputParameters.sampleFormat = PA_SAMPLE_TYPE;
+    outputParameters.suggestedLatency = outputInfo->defaultHighOutputLatency;
+    outputParameters.hostApiSpecificStreamInfo = NULL;
+
+    /* -- setup -- */
+
+    err = Pa_OpenStream(
+              &stream,
+              &inputParameters,
+              &outputParameters,
+              SAMPLE_RATE,
+              FRAMES_PER_BUFFER,
+              paClipOff,      /* we won't output out of range samples so don't bother clipping them */
+              NULL, /* no callback, use blocking API */
+              NULL ); /* no callback, so no callback userData */
+    if( err != paNoError ) goto error2;
+
+    numBytes = FRAMES_PER_BUFFER * numChannels * SAMPLE_SIZE ;
+    sampleBlock = (char *) malloc( numBytes );
+    if( sampleBlock == NULL )
+    {
+        printf("Could not allocate record array.\n");
+        goto error1;
+    }
+    memset( sampleBlock, SAMPLE_SILENCE, numBytes );
+
+    err = Pa_StartStream( stream );
+    if( err != paNoError ) goto error1;
+    printf("Wire on. Will run %d seconds.\n", NUM_SECONDS); fflush(stdout);
+
+    for( i=0; i<(NUM_SECONDS*SAMPLE_RATE)/FRAMES_PER_BUFFER; ++i )
+    {
+        // You may get underruns or overruns if the output is not primed by PortAudio.
+        err = Pa_WriteStream( stream, sampleBlock, FRAMES_PER_BUFFER );
+        if( err ) goto xrun;
+        err = Pa_ReadStream( stream, sampleBlock, FRAMES_PER_BUFFER );
+        if( err ) goto xrun;
+    }
+    printf("Wire off.\n"); fflush(stdout);
+
+    err = Pa_StopStream( stream );
+    if( err != paNoError ) goto error1;
+
+    free( sampleBlock );
+
+    Pa_Terminate();
+    return 0;
+
+xrun:
+    printf("err = %d\n", err); fflush(stdout);
+    if( stream ) {
+        Pa_AbortStream( stream );
+        Pa_CloseStream( stream );
+    }
+    free( sampleBlock );
+    Pa_Terminate();
+    if( err & paInputOverflow )
+        fprintf( stderr, "Input Overflow.\n" );
+    if( err & paOutputUnderflow )
+        fprintf( stderr, "Output Underflow.\n" );
+    return -2;
+error1:
+    free( sampleBlock );
+error2:
+    if( stream ) {
+        Pa_AbortStream( stream );
+        Pa_CloseStream( stream );
+    }
+    Pa_Terminate();
+    fprintf( stderr, "An error occurred while using the portaudio stream\n" );
+    fprintf( stderr, "Error number: %d\n", err );
+    fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
+    return -1;
+}