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Commit 967abf87 authored by Phil Burk's avatar Phil Burk
Browse files

aaudio: force underruns in write callback 

Test AAudioStream_getXRunCount() by sleeping in callback.

Bug: 38512417
Test: write_sine_callback -pl -n1 -s20 -c2 -u
Change-Id: Ib3fe210b764e4202b70c54a609785de89e52a017
parent 10edfcf7

media/libaaudio/examples/utils/AAudioSimplePlayer.h

+2 −2
Original line number Diff line number Diff line
@@ -30,8 +30,8 @@ 
#define SHARING_MODE  AAUDIO_SHARING_MODE_SHARED

#define PERFORMANCE_MODE AAUDIO_PERFORMANCE_MODE_NONE



// Arbitrary period for glitches, once per second at 48000 Hz.

#define FORCED_UNDERRUN_PERIOD_FRAMES    48000

// Arbitrary period for glitches

#define FORCED_UNDERRUN_PERIOD_FRAMES    (2 * 48000)

// How long to sleep in a callback to cause an intentional glitch. For testing.

#define FORCED_UNDERRUN_SLEEP_MICROS     (10 * 1000)

media/libaaudio/examples/write_sine/src/write_sine_callback.cpp

+11 −5
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <aaudio/AAudio.h>

#include "AAudioExampleUtils.h"

#include "AAudioSimplePlayer.h"

#include "AAudioArgsParser.h"



/**

 * Open stream, play some sine waves, then close the stream.
@@ -37,7 +38,8 @@ 
 */

static aaudio_result_t testOpenPlayClose(AAudioArgsParser &argParser,

                                         int32_t loopCount,

                                         int32_t prefixToneMsec)

                                         int32_t prefixToneMsec,

                                         bool forceUnderruns)

{

    SineThreadedData_t myData;

    AAudioSimplePlayer &player = myData.simplePlayer;
@@ -49,8 +51,7 @@ static aaudio_result_t testOpenPlayClose(AAudioArgsParser &argParser, 
    printf("----------------------- run complete test --------------------------\n");

    myData.schedulerChecked = false;

    myData.callbackCount = 0;

    // TODO add a command line option for the forceUnderruns

    myData.forceUnderruns = false; // set true to test AAudioStream_getXRunCount()

    myData.forceUnderruns = forceUnderruns; // test AAudioStream_getXRunCount()



    result = player.open(argParser,

                         SimplePlayerDataCallbackProc, SimplePlayerErrorCallbackProc, &myData);
@@ -203,6 +204,7 @@ static void usage() { 
    AAudioArgsParser::usage();

    printf("      -l{count} loopCount start/stop, every other one is silent\n");

    printf("      -t{msec}  play a high pitched tone at the beginning\n");

    printf("      -u        force periodic Underruns by sleeping in callback\n");

}



int main(int argc, const char **argv)
@@ -211,6 +213,7 @@ int main(int argc, const char **argv) 
    aaudio_result_t    result;

    int32_t            loopCount = 1;

    int32_t            prefixToneMsec = 0;

    bool               forceUnderruns = false;



    // Make printf print immediately so that debug info is not stuck

    // in a buffer if we hang or crash.
@@ -231,6 +234,9 @@ int main(int argc, const char **argv) 
                    case 't':

                        prefixToneMsec = atoi(&arg[2]);

                        break;

                    case 'u':

                        forceUnderruns = true;

                        break;

                    default:

                        usage();

                        exit(EXIT_FAILURE);
@@ -245,7 +251,7 @@ int main(int argc, const char **argv) 
    }



    // Keep looping until we can complete the test without disconnecting.

    while((result = testOpenPlayClose(argParser, loopCount, prefixToneMsec))

    while((result = testOpenPlayClose(argParser, loopCount, prefixToneMsec, forceUnderruns))

            == AAUDIO_ERROR_DISCONNECTED);



    return (result) ? EXIT_FAILURE : EXIT_SUCCESS;