BlackBerry ten CASCADES/QT Project play mp3

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The following are used in CASCADES/QT projects.

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cascadesi/q Project, library mmrndclient and STRM cannot be added to the properties of project.

Cause: In the Cascades GUI application, use QT and make to compile the

Workaround:

Modify the QT project file (such as the Xxx.pro file) under the root directory

CONFIG + = qt warn_on debug_and_release cascades

Add later

LIBS + =-LMMRNDCLIENT-LSTRM

Reference: Linking an Object Library to an application

Other:

In the CASCADES/QT project, import the Playaudio example program that comes with the BB10 IDE.

The Mmr_error_none in the header file in the example program cannot find the relevant definition at compile time, or it is a syntax error.

Personal apprentice not fine, had to temporarily have to head file inside the Err are temporarily commented out.

static const char *errlist[] = {
ERR (Mmr_error_none),

...

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Here is the code, according to the BB10 IDE in the self-contained Playaudio example C program modified to C + + QT program.

#ifndef _soundmanager_h #define _soundmanager_h #include <errno.h> #include <stdio.h> #include <stdlib.h > #include <string.h> #include <unistd.h> #include <sys/stat.h> #include <bps/bps.h> # Include <bps/audiomixer.h> #include <bps/dialog.h> #include <bps/navigator.h> #include <mm/ renderer.h> #include <QtCore/qstring.h> #include <qhash.h>/* buffer to store messages that we'll di

Splay in the dialog */#define msg_size, static char msg[msg_size]; #if! Defined (default_audio_out) #define Default_audio_out "Audio:default" #endif #define Color_purple 0xffff00ff #define W 

Av_relative_path "/app/native/assets/farewell.mp3" #define ERR (code) [Code] = #code static const char *errlist[] = {
}; /* Jiang TODO ERR (mm_error_code. Mmr_error_none), err (Mmr_error_unknown), err (Mmr_error_invalid_parameter), err (mmr_error_invalid_state), Err (MM R_error_unsupported_value), ERR (mmr_error_Unsupported_media_type), err (mmr_error_media_protected), err (mmr_error_unsupported_operation), Err (MMR_ERROR_READ ), err (Mmr_error_write), err (mmr_error_media_unavailable), err (mmr_error_media_corrupted), Err (MMR_ERROR_OUTPU t_unavailable), err (mmr_error_no_memory), err (mmr_error_resource_unavailable), */#undef ERR #define NERRS (size
    Of (Errlist)/sizeof (ERRLIST[0)) class Soundmanager:public Qobject {q_object public:soundmanager ();

~soundmanager ();

Public slots:void Playmp3 ();

};
 #endif//_soundmanager_h

#include "soundmanager.h" void Show_dialog_message (char* msg) {} static void Mmrerror (mmr_context_t *ctxt, const char
    *ERRMSG) {Const mmr_error_info_t *err = Mmr_error_info (ctxt);
    unsigned errcode = err->error_code;
    const char *name; if (errcode >= Nerrs | |
    (name = errlist[Errcode]) = = NULL) {name = "Bad error code";
    } snprintf (msg, msg_size, "%s:error%d (%s) \ n", ErrMsg, Errcode, name);
Show_dialog_message (msg);
    } void Soundmanager::p Laymp3 () {const char *mmrname = NULL;
    const char *ctxtname = "Testplayer";
    const char *audioout = NULL;
    const char *inputtype = "track";
    Char Cwd[path_max];
    Char Inputurl[path_max];
    float volume;
    int RC;
    int final_return_code = exit_failure;
    int exit_application = 0;
    mmr_connection_t *connection = NULL;

    mmr_context_t *ctxt = NULL; /* * Before we can listen for events from the BlackBerry (R) OS platform * Services, we need to InitiaLize the BPS Infrastructure */bps_initialize (); /* * Once the BPS infrastructure have been initialized we can register for * events from the various BlackBerry (R ) OS platform Services.
     The * Navigator service manages and delivers application life cycle and * visibility events. * For this sample, we request Navigator events so we can track when * The system is terminating the application (NAVI Gator_exit event).
     This allows * us to clean up application resources.
    */navigator_request_events (0);

    Dialog_request_events (0);
     /* * Create and display the dialog.

    *///jiang//create_dialog ();
    GETCWD (CWD, Path_max);
    rc = snprintf (Inputurl, Path_max, "file://%s%s", CWD, Wav_relative_path);
          if (rc > Path_max-1) {show_dialog_message ("File name and PATH too long"); Jiang//return 1;
    Fail return; } mode_t mode = S_IRUSR |
    S_IXUSR; int audio_oid; Output ID strm_dict_t *aoparams = NULL;

    Output parameters audioout = default_audio_out; if ((connection = Mmr_connect (mmrname)) = = NULL) {snprintf (msg, Msg_size, "Mmr_connect:%s", Strerror (errno
        ));
    Show_dialog_message (msg); } else if ((Ctxt = Mmr_context_create (connection, ctxtname, 0, mode)) = = = NULL) {snprintf (msg, msg_size, '%s ')
        :%s ", Ctxtname, Strerror (errno));
    Show_dialog_message (msg); } else if (audioout && (audio_oid = Mmr_output_attach (Ctxt, Audioout, "audio")) < 0) {Mmrerror (
    Ctxt, audioout); } else if (Aoparams && mmr_output_parameters (Ctxt, Audio_oid, Aoparams)) {Mmrerror (ctxt, "output par
    Ameters (audio) ");
    } else if (Mmr_input_attach (Ctxt, Inputurl, InputType) < 0) {Mmrerror (ctxt, Inputurl);
    } else if (Mmr_play (Ctxt) < 0) {Mmrerror (Ctxt, "Mmr_play"); } else {//3 minutes and 5 seconds is the Total length of the sample song.
        rc = Audiomixer_get_output_level (Audiomixer_output_speaker, &volume); if (rc = = bps_success) {snprintf (msg, msg_size, successfully queried the output level.\ncurrent volume is%f
            \ n ", volume);
        Show_dialog_message (msg);
        } else {show_dialog_message ("Failed to query the output level.\n");

        }//play for the seconds at normal volume sleep (30); Decrease the volume and play for seconds Audiomixer_set_output_level (Audiomixer_output_speaker, volume/2.0)
        ;
        if (rc = = bps_success) {show_dialog_message ("successfully decreased the volume by half.\n");
        } else {show_dialog_message ("Failed to decrease the volume.\n");

        } sleep (30); Set the volume to original level and play for seconds Audiomixer_set_output_level (Audiomixer_output_speaker,
        volume);
 if (rc = = bps_success) {           Show_dialog_message ("Successfully set the volume back to original level.\n");
        } else {show_dialog_message ("Failed to set the volume.\n");

        } sleep (30);
        Mute for 5 Seconds Audiomixer_set_output_mute (Audiomixer_output_speaker, true);
        if (rc = = bps_success) {show_dialog_message ("successfully muted.\n");
        } else {show_dialog_message ("Failed to mute.\n");

        } sleep (5);
        Toggle the mute setting and play until the end Audiomixer_toggle_output_mute (Audiomixer_output_speaker);
        if (rc = = bps_success) {show_dialog_message ("successfully toggled the mute setting.\n");
        } else {show_dialog_message ("Failed to toggle the mute setting.\n");
    } Final_return_code = exit_success;
     }/* * Process Navigator events until we receive a Navigator_exit event. */while (!exit_application) {/* * Using a negative timeout ( -1) in the "Call" to Bps_get_event (...)
         * Ensures that we don ' t busy wait by blocking until an event is * available.
        */bps_event_t *event = NULL;

        Bps_get_event (&event,-1); if (event) {/* * * If it is a Navigator_exit event then set the Exit_application * FL AG so the application would stop processing events, clean up * and exit */if (Bps_ev Ent_get_domain (Event) = = Navigator_get_domain ()) {if (Navigator_exit = = Bps_event_get_code (event) &AMP;&A mp (Final_return_code = = exit_success))             {mmr_stop (ctxt);     Not really necessary – mmr_input_detach () would take care of this mmr_input_detach (Ctxt);   Not really necessary – Mmr_context_destroy () would take care of this mmr_context_destroy (Ctxt); Not really necessary--MMR_disconnect () would take care of this mmr_disconnect (connection);
                Not really necessary – exiting would take care of this exit_application = 1;

    }}}}/* * Clean up the BPS infrastructure and exit */Bps_shutdown ();
    Jiang//return Final_return_code;
Return
 } Soundmanager::soundmanager () {} soundmanager::~soundmanager () {}