aaudio: test AAudioStream_setBufferSizeInFrames()

        "libutils",

    ],

}

cc_test {

    name: "test_various",

    defaults: ["libaaudio_tests_defaults"],

    srcs: ["test_various.cpp"],

    shared_libs: [

        "libaaudio",

        "libbinder",

        "libcutils",

        "libutils",

    ],

}

/*

 * Copyright (C) 2017 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.

 */

// Test various AAudio features including AAudioStream_setBufferSizeInFrames().

#include <stdio.h>

//#include <stdlib.h>

//#include <math.h>

#include <android-base/macros.h>

#include <aaudio/AAudio.h>

#include <gtest/gtest.h>

// Callback function that does nothing.

aaudio_data_callback_result_t MyDataCallbackProc(

        AAudioStream *stream,

        void *userData,

        void *audioData,

        int32_t numFrames

) {

    (void) stream;

    (void) userData;

    (void) audioData;

    (void) numFrames;

    return AAUDIO_CALLBACK_RESULT_CONTINUE;

}

// Test AAudioStream_setBufferSizeInFrames()

//int main() { // To fix Android Studio formatting when editing.

TEST(test_various, aaudio_set_buffer_size) {

    aaudio_result_t result = AAUDIO_OK;

    int32_t bufferCapacity;

    int32_t framesPerBurst = 0;

    int32_t actualSize = 0;

    AAudioStreamBuilder *aaudioBuilder = nullptr;

    AAudioStream *aaudioStream = nullptr;

    // Use an AAudioStreamBuilder to contain requested parameters.

    ASSERT_EQ(AAUDIO_OK, AAudio_createStreamBuilder(&aaudioBuilder));

    // Request stream properties.

    AAudioStreamBuilder_setDataCallback(aaudioBuilder, MyDataCallbackProc, nullptr);

    AAudioStreamBuilder_setPerformanceMode(aaudioBuilder, AAUDIO_PERFORMANCE_MODE_LOW_LATENCY);

    // Create an AAudioStream using the Builder.

    EXPECT_EQ(AAUDIO_OK, AAudioStreamBuilder_openStream(aaudioBuilder, &aaudioStream));

    // This is the number of frames that are read in one chunk by a DMA controller

    // or a DSP or a mixer.

    framesPerBurst = AAudioStream_getFramesPerBurst(aaudioStream);

    bufferCapacity = AAudioStream_getBufferCapacityInFrames(aaudioStream);

    printf("          bufferCapacity = %d, remainder = %d\n",

           bufferCapacity, bufferCapacity % framesPerBurst);

    actualSize = AAudioStream_setBufferSizeInFrames(aaudioStream, 0);

    EXPECT_GT(actualSize, 0);

    EXPECT_LE(actualSize, bufferCapacity);

    actualSize = AAudioStream_setBufferSizeInFrames(aaudioStream, 2 * framesPerBurst);

    EXPECT_GT(actualSize, framesPerBurst);

    EXPECT_LE(actualSize, bufferCapacity);

    actualSize = AAudioStream_setBufferSizeInFrames(aaudioStream, bufferCapacity - 1);

    EXPECT_GT(actualSize, framesPerBurst);

    EXPECT_LE(actualSize, bufferCapacity);

    actualSize = AAudioStream_setBufferSizeInFrames(aaudioStream, bufferCapacity);

    EXPECT_GT(actualSize, framesPerBurst);

    EXPECT_LE(actualSize, bufferCapacity);

    actualSize = AAudioStream_setBufferSizeInFrames(aaudioStream, bufferCapacity + 1);

    EXPECT_GT(actualSize, framesPerBurst);

    EXPECT_LE(actualSize, bufferCapacity);

    actualSize = AAudioStream_setBufferSizeInFrames(aaudioStream, 1234567);

    EXPECT_GT(actualSize, framesPerBurst);

    EXPECT_LE(actualSize, bufferCapacity);

    actualSize = AAudioStream_setBufferSizeInFrames(aaudioStream, INT32_MAX);

    EXPECT_GT(actualSize, framesPerBurst);

    EXPECT_LE(actualSize, bufferCapacity);

    actualSize = AAudioStream_setBufferSizeInFrames(aaudioStream, INT32_MIN);

    EXPECT_GT(actualSize, 0);

    EXPECT_LE(actualSize, bufferCapacity);

    AAudioStream_close(aaudioStream);

    AAudioStreamBuilder_delete(aaudioBuilder);

    printf("          result = %d = %s\n", result, AAudio_convertResultToText(result));

}