Native Development

[big_mouth]

Hi, I'm trying to download an audio file and play it using the mmr on BB10.

When I call "mmr_attach_input" the file isn't readable, but I don't know what's wrong.

Here is the downloader code (running in a cascades app, connected to a QNetworkReply):

    QByteArray bytes = reply->readAll();
    reply->deleteLater();

    QString fileExt = url.path().split('.').last();
    fileName = QString("%1/app/native/sample%2.%3")
            .arg(QDir::currentPath())
            .arg(counter++)
            .arg(fileExt);

    FILE *sampleFile = fopen(fileName.toStdString().c_str(), "wb+");

    if (sampleFile) {
        int nBytes = fwrite(bytes.data(), bytes.size(), 1, sampleFile);
        qDebug() << "written " << nBytes << " to file";

        fchmod(fileno(sampleFile), 0755);
        fclose(sampleFile);
    }

And the "player":

        mmr_context_t *context = mmr_context_create(mmr, generateContextName().c_str(), 0, S_IRUSR | S_IXUSR);
        if (context) {
            const char *fileName = getLocalFileName();
            int result = mmr_output_attach(context, "audio:default", "audio");
            if (result >= 0) { result = mmr_input_attach(context, fileName, "track"); }
            if (result >= 0) { result = mmr_play(context); }

Tested also:

                FILE *test = fopen(fileName, "rb");

And I couldn't open the file. The filename is right, and the file is actually saved (I can open it as a "file://" url in the web browser).

The error I get after mmr_input_attach is MMR_ERROR_MEDIA_UNAVAILABLE.

Additional information: if I call mmr_input_attach before mmr_output_attach, I get an MMR_ERROR_UNSUPPORTED_MEDIA_TYPE, but I suppose it's an expected behaviour.

[gperry]

Not sure if it is directly relevant because you are using a different player but have you checked out the cowbell sample app which makes use of sound files?

Certainly it sets up the path files and maybe a useful pattern to follow.

Graham

[smcveigh]

    fileName = QString("%1/app/native/sample%2.%3")

Is this where you're trying to save the file? The app/ directory is a symlink into the read-only installation directory for your app.  You can't write files there on the target.

Try saving to data/ instead, or tmp/, or get yourself access_shared permission and write files to shared/music.

Cheers,

Sean