By doing this command I have: strings ~/dev/android_libs/libmedia.so | grep AudioTrack | grep set
_ZN7android10AudioTrack9setVolumeEff _ZN7android10AudioTrack17setMarkerPositionEj _ZN7android10AudioTrack23setPositionUpdatePeriodEj _ZN7android10AudioTrack11setPositionEj _ZN7android10AudioTrack7setLoopEjji _ZN7android10AudioTrack13setSampleRateEi _ZN7android10AudioTrack3setEijiiijPFviPvS1_ES1_iRKNS_2spINS_7IMemoryEEEb With the last line it seems that the function exist on my lib? 2011/10/25 HamdiHamZ <hamdi.zr...@gmail.com> > Hi folks, > > I ma trying to write a media player for Android 2.2. I am using > NDK_rb6 to build my JNI library written i C/C++ (under Ubuntu > 11.04)... Actually, I faced a lot of problems of linking and > dependencies, I resolved a lot of the and I am stuck with this one: > > ~/dev/workspace/MyApp/jni/android-out.cpp:95: undefined reference to > `android::AudioTrack::set(int, unsigned int, int, int, int, unsigned > int, void (*)(int, void*, void*), void*, int, > android::sp<android::IMemory> const&, bool, int)' > collect2: ld returned 1 exit status > > However, I found its definition in $(ANDROID_SRC)/frameworks/base/ > media/libmedia/AudioTrack.cpp: > > status_t AudioTrack::set( > int streamType, > uint32_t sampleRate, > int format, > int channels, > int frameCount, > uint32_t flags, > callback_t cbf, > void* user, > int notificationFrames, > const sp<IMemory>& sharedBuffer, > bool threadCanCallJava, > int sessionId) > { > ... > } > > and in the header that I included (media/audioTrack.h): > > /* Initialize an uninitialized AudioTrack. > * Returned status (from utils/Errors.h) can be: > * - NO_ERROR: successful intialization > * - INVALID_OPERATION: AudioTrack is already intitialized > * - BAD_VALUE: invalid parameter (channels, format, > sampleRate...) > * - NO_INIT: audio server or audio hardware not initialized > * */ > status_t set(int streamType =-1, > uint32_t sampleRate = 0, > int format = 0, > int channels = 0, > int frameCount = 0, > uint32_t flags = 0, > callback_t cbf = 0, > void* user = 0, > int notificationFrames = 0, > const sp<IMemory>& sharedBuffer = 0, > bool threadCanCallJava = false, > int sessionId = 0); > > > and I am using it this way: > > status = track->set(AudioSystem::MUSIC, > audec->samplerate, > AudioSystem::PCM_16_BIT, > (audec->channels == 1) ? > AudioSystem::CHANNEL_OUT_MONO : AudioSystem::CHANNEL_OUT_STEREO, > 0, // frameCount > 0, // flags > audioCallback, > audec, // user when callback > 0, // notificationFrames > 0, // shared buffer > 0); > > > > So I am not able to see where am I wrong? > > > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en