Hi Dave Do you mean there will be a Client of mediarecorder is similar to mediaplayer client( IMediaPlayerClient)
On Feb 19, 5:01 am, Dave Sparks <[email protected]> wrote: > That is correct. We will probably add a callback mechanism for the > MediaRecorder in the next release. > > It's easier to conceptualize if you think in terms of the binder as a > remote function call into another process. If you want to establish a > callback mechanism, you need to pass an object interface (in OOP > terms) to the server so that it can callback on the client. The only > difference is that client->server calls are almost always synchronous, > i.e. the client thread blocks until the server responds. For server->client > callbacks, they are asynchronous - the server posts a binder > > message but does not block. > > On Feb 18, 12:03 pm, hanchao3c <[email protected]> wrote: > > > In my view. > > The function of the "Client" is similar to the callback. > > Because using the binder as IPC , simple callback can't be used , we > > must use a client for callback. > > > On Feb 19, 1:56 am, rktb <[email protected]> wrote: > > > > Hi, > > > > What is the difference between the create methods of player and > > > recorder? > > > > virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid) = 0; > > > and > > > virtual sp<IMediaPlayer> create(pid_t pid, const > > > sp<IMediaPlayerClient>& client, const char* url) = 0; > > > > Both return an instance of the interface requested. But, the create of > > > MediaPlayerService takes in the reference of the client as well. Is > > > this for the notifications back from the mediaplayerservice to the > > > client? Or, for something else? > > > > -Ravi > > > > On Feb 16, 12:26 pm, Dave Sparks <[email protected]> wrote: > > > > > We needed a static object to allocate new clients. It happened to be > > > > convenient. It may get renamed in the future. > > > > > On Feb 16, 9:27 am, hanchao3c <[email protected]> wrote: > > > > > > In this code: > > > > > base/include/media/IMediaPlayerService.h > > > > > > class IMediaPlayerService: public IInterface > > > > > { > > > > > public: > > > > > DECLARE_META_INTERFACE(MediaPlayerService); > > > > > > virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid) = 0; > > > > > virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t > > > > > pid) = 0; > > > > > > virtual sp<IMediaPlayer> create(pid_t pid, const > > > > > sp<IMediaPlayerClient>& client, const char* url) = 0; > > > > > virtual sp<IMediaPlayer> create(pid_t pid, const > > > > > sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t > > > > > length) = 0; > > > > > virtual sp<IMemory> decode(const char* url, uint32_t > > > > > *pSampleRate, int* pNumChannels, int* pFormat) = 0; > > > > > virtual sp<IMemory> decode(int fd, int64_t offset, int64_t > > > > > length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat) = 0;}; > > > > > > ================================================================================ > > > > > > 1. It seems there should a IMediaRedorderService , but there isn't! > > > > > 2. If use it like this , why still call it "IMediaPlayerService" --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "android-framework" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-framework?hl=en -~----------~----~----~----~------~----~------~--~---
