Stress test for AudioTrack shared memory bug
Changes in patch set 2:
- add call to ProcessState::self()->startThreadPool()
- remove dead code AudioSystem::get_audio_flinger
- use simpler MemoryDealer isntead of MemoryHeapBase
- AudioTrack now must be sp<> instead of raw pointer
- use new constants from audio.h
- change LOGx macros to ALOGx
- fix file permission on Android.mk
Bug: 2801375
Change-Id: I899b08e0aa91deca328523f66f71e667011b4522
diff --git a/media/tests/audiotests/Android.mk b/media/tests/audiotests/Android.mk
new file mode 100644
index 0000000..69f0bb5
--- /dev/null
+++ b/media/tests/audiotests/Android.mk
@@ -0,0 +1,21 @@
+ifeq ($(TARGET_ARCH),arm)
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE:= shared_mem_test
+LOCAL_SRC_FILES := \
+ shared_mem_test.cpp
+LOCAL_SHARED_LIBRARIES := \
+ libc \
+ libcutils \
+ libutils \
+ libbinder \
+ libhardware_legacy \
+ libmedia
+LOCAL_MODULE_TAGS := tests
+
+include $(BUILD_EXECUTABLE)
+
+endif
diff --git a/media/tests/audiotests/shared_mem_test.cpp b/media/tests/audiotests/shared_mem_test.cpp
new file mode 100644
index 0000000..992c900
--- /dev/null
+++ b/media/tests/audiotests/shared_mem_test.cpp
@@ -0,0 +1,216 @@
+// Copyright 2008, The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//
+#define LOG_NDEBUG 0
+#define LOG_TAG "shared_mem_test"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <cutils/properties.h>
+#include <media/AudioSystem.h>
+#include <media/AudioTrack.h>
+#include <math.h>
+
+#include "shared_mem_test.h"
+#include <binder/MemoryDealer.h>
+#include <binder/MemoryHeapBase.h>
+#include <binder/MemoryBase.h>
+#include <binder/ProcessState.h>
+
+
+#include <utils/Log.h>
+
+#include <fcntl.h>
+
+namespace android {
+
+/************************************************************
+*
+* Constructor
+*
+************************************************************/
+AudioTrackTest::AudioTrackTest(void) {
+
+ InitSine(); // init sine table
+
+}
+
+
+/************************************************************
+*
+*
+************************************************************/
+void AudioTrackTest::Execute(void) {
+ if (Test01() == 0) {
+ ALOGD("01 passed\n");
+ } else {
+ ALOGD("01 failed\n");
+ }
+}
+
+/************************************************************
+*
+* Shared memory test
+*
+************************************************************/
+#define BUF_SZ 44100
+
+int AudioTrackTest::Test01() {
+
+ sp<MemoryDealer> heap;
+ sp<IMemory> iMem;
+ uint8_t* p;
+
+ short smpBuf[BUF_SZ];
+ long rate = 44100;
+ unsigned long phi;
+ unsigned long dPhi;
+ long amplitude;
+ long freq = 1237;
+ float f0;
+
+ f0 = pow(2., 32.) * freq / (float)rate;
+ dPhi = (unsigned long)f0;
+ amplitude = 1000;
+ phi = 0;
+ Generate(smpBuf, BUF_SZ, amplitude, phi, dPhi); // fill buffer
+
+ for (int i = 0; i < 1024; i++) {
+ heap = new MemoryDealer(1024*1024, "AudioTrack Heap Base");
+
+ iMem = heap->allocate(BUF_SZ*sizeof(short));
+
+ p = static_cast<uint8_t*>(iMem->pointer());
+ memcpy(p, smpBuf, BUF_SZ*sizeof(short));
+
+ sp<AudioTrack> track = new AudioTrack(AUDIO_STREAM_MUSIC,// stream type
+ rate,
+ AUDIO_FORMAT_PCM_16_BIT,// word length, PCM
+ AUDIO_CHANNEL_OUT_MONO,
+ iMem);
+
+ status_t status = track->initCheck();
+ if(status != NO_ERROR) {
+ track.clear();
+ ALOGD("Failed for initCheck()");
+ return -1;
+ }
+
+ // start play
+ ALOGD("start");
+ track->start();
+
+ usleep(20000);
+
+ ALOGD("stop");
+ track->stop();
+ iMem.clear();
+ heap.clear();
+ usleep(20000);
+ }
+
+ return 0;
+
+}
+
+/************************************************************
+*
+* Generate a mono buffer
+* Error is less than 3lsb
+*
+************************************************************/
+void AudioTrackTest::Generate(short *buffer, long bufferSz, long amplitude, unsigned long &phi, long dPhi)
+{
+ long pi13 = 25736; // 2^13*pi
+ // fill buffer
+ for(int i0=0; i0<bufferSz; i0++) {
+ long sample;
+ long l0, l1;
+
+ buffer[i0] = ComputeSine( amplitude, phi);
+ phi += dPhi;
+ }
+}
+
+/************************************************************
+*
+* Generate a sine
+* Error is less than 3lsb
+*
+************************************************************/
+short AudioTrackTest::ComputeSine(long amplitude, long phi)
+{
+ long pi13 = 25736; // 2^13*pi
+ long sample;
+ long l0, l1;
+
+ sample = (amplitude*sin1024[(phi>>22) & 0x3ff]) >> 15;
+ // correct with interpolation
+ l0 = (phi>>12) & 0x3ff; // 2^20 * x / (2*pi)
+ l1 = (amplitude*sin1024[((phi>>22) + 256) & 0x3ff]) >> 15; // 2^15*cosine
+ l0 = (l0 * l1) >> 10;
+ l0 = (l0 * pi13) >> 22;
+ sample = sample + l0;
+
+ return (short)sample;
+}
+
+
+/************************************************************
+*
+* init sine table
+*
+************************************************************/
+void AudioTrackTest::InitSine(void) {
+ double phi = 0;
+ double dPhi = 2 * M_PI / SIN_SZ;
+ for(int i0 = 0; i0<SIN_SZ; i0++) {
+ long d0;
+
+ d0 = 32768. * sin(phi);
+ phi += dPhi;
+ if(d0 >= 32767) d0 = 32767;
+ if(d0 <= -32768) d0 = -32768;
+ sin1024[i0] = (short)d0;
+ }
+}
+
+/************************************************************
+*
+* main in name space
+*
+************************************************************/
+int main() {
+ ProcessState::self()->startThreadPool();
+ AudioTrackTest *test;
+
+ test = new AudioTrackTest();
+ test->Execute();
+ delete test;
+
+ return 0;
+}
+
+}
+
+/************************************************************
+*
+* global main
+*
+************************************************************/
+int main(int argc, char *argv[]) {
+
+ return android::main();
+}
diff --git a/media/tests/audiotests/shared_mem_test.h b/media/tests/audiotests/shared_mem_test.h
new file mode 100644
index 0000000..f495955
--- /dev/null
+++ b/media/tests/audiotests/shared_mem_test.h
@@ -0,0 +1,27 @@
+// Copyright 2008 The Android Open Source Project
+
+#ifndef AUDIOTRACKTEST_H_
+#define AUDIOTRACKTEST_H_
+
+namespace android {
+
+class AudioTrackTest{
+ public:
+ AudioTrackTest(void);
+ ~AudioTrackTest() {};
+
+ void Execute(void);
+ int Test01();
+
+ void Generate(short *buffer, long bufferSz, long amplitude, unsigned long &phi, long dPhi);
+ void InitSine();
+ short ComputeSine(long amplitude, long phi);
+
+ #define SIN_SZ 1024
+ short sin1024[SIN_SZ]; // sine table 2*pi = 1024
+};
+
+};
+
+
+#endif /*AUDIOTRACKTEST_H_*/