学习fmod的使用

1.到fmod 官网下载 studio 和Api

 地址：https://www.fmod.com/download

2.找到playsound.cpp文件

地址：D:\fmodstudioapi11001android\fmodstudioapi11001android\api\lowlevel\examples

3.找到main()函数

#include "fmod.hpp"#include "common.h"int FMOD_Main(){    FMOD::System     *system;    FMOD::Sound      *sound1, *sound2, *sound3;    FMOD::Channel    *channel = 0;    FMOD_RESULT       result;    unsigned int      version;    void             *extradriverdata = 0;        Common_Init(&extradriverdata);    /*        Create a System object and initialize    */    result = FMOD::System_Create(&system);    ERRCHECK(result);    result = system->getVersion(&version);    ERRCHECK(result);    if (version < FMOD_VERSION)    {        Common_Fatal("FMOD lib version %08x doesn't match header version %08x", version, FMOD_VERSION);    }    result = system->init(32, FMOD_INIT_NORMAL, extradriverdata);    ERRCHECK(result);    result = system->createSound(Common_MediaPath("drumloop.wav"), FMOD_DEFAULT, 0, &sound1);    ERRCHECK(result);    result = sound1->setMode(FMOD_LOOP_OFF);    /* drumloop.wav has embedded loop points which automatically makes looping turn on, */    ERRCHECK(result);                           /* so turn it off here.  We could have also just put FMOD_LOOP_OFF in the above CreateSound call. */    result = system->createSound(Common_MediaPath("jaguar.wav"), FMOD_DEFAULT, 0, &sound2);    ERRCHECK(result);    result = system->createSound(Common_MediaPath("swish.wav"), FMOD_DEFAULT, 0, &sound3);    ERRCHECK(result);    /*        Main loop    */    do    {        Common_Update();        if (Common_BtnPress(BTN_ACTION1))        {            result = system->playSound(sound1, 0, false, &channel);            ERRCHECK(result);        }        if (Common_BtnPress(BTN_ACTION2))        {            result = system->playSound(sound2, 0, false, &channel);            ERRCHECK(result);        }        if (Common_BtnPress(BTN_ACTION3))        {            result = system->playSound(sound3, 0, false, &channel);            ERRCHECK(result);        }        result = system->update();        ERRCHECK(result);        {            unsigned int ms = 0;            unsigned int lenms = 0;            bool         playing = 0;            bool         paused = 0;            int          channelsplaying = 0;            if (channel)            {                FMOD::Sound *currentsound = 0;                result = channel->isPlaying(&playing);                if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE) && (result != FMOD_ERR_CHANNEL_STOLEN))                {                    ERRCHECK(result);                }                result = channel->getPaused(&paused);                if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE) && (result != FMOD_ERR_CHANNEL_STOLEN))                {                    ERRCHECK(result);                }                result = channel->getPosition(&ms, FMOD_TIMEUNIT_MS);                if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE) && (result != FMOD_ERR_CHANNEL_STOLEN))                {                    ERRCHECK(result);                }                               channel->getCurrentSound(¤tsound);                if (currentsound)                {                    result = currentsound->getLength(&lenms, FMOD_TIMEUNIT_MS);                    if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE) && (result != FMOD_ERR_CHANNEL_STOLEN))                    {                        ERRCHECK(result);                    }                }            }            system->getChannelsPlaying(&channelsplaying, NULL);            Common_Draw("==================================================");            Common_Draw("Play Sound Example.");            Common_Draw("Copyright (c) Firelight Technologies 2004-2017.");            Common_Draw("==================================================");            Common_Draw("");            Common_Draw("Press %s to play a mono sound (drumloop)", Common_BtnStr(BTN_ACTION1));            Common_Draw("Press %s to play a mono sound (jaguar)", Common_BtnStr(BTN_ACTION2));            Common_Draw("Press %s to play a stereo sound (swish)", Common_BtnStr(BTN_ACTION3));            Common_Draw("Press %s to quit", Common_BtnStr(BTN_QUIT));            Common_Draw("");            Common_Draw("Time %02d:%02d:%02d/%02d:%02d:%02d : %s", ms / 1000 / 60, ms / 1000 % 60, ms / 10 % 100, lenms / 1000 / 60, lenms / 1000 % 60, lenms / 10 % 100, paused ? "Paused " : playing ? "Playing" : "Stopped");            Common_Draw("Channels Playing %d", channelsplaying);        }        Common_Sleep(50);    } while (!Common_BtnPress(BTN_QUIT));    /*        Shut down    */    result = sound1->release();    ERRCHECK(result);    result = sound2->release();    ERRCHECK(result);    result = sound3->release();    ERRCHECK(result);    result = system->close();    ERRCHECK(result);    result = system->release();    ERRCHECK(result);    Common_Close();    return 0;}

4.查看 Common_MediaPath（）函数 可以发现  这是从assets中找到

const char *Common_MediaPath(const char *fileName){    char *filePath = (char *)calloc(256, sizeof(char));    strcat(filePath, "file:///android_asset/");    strcat(filePath, fileName);    gPathList.push_back(filePath);    return filePath;}