Ticket #16031: BMediaFile-leak.cpp

// gcc -g BMediaFile-leak.cpp -lbe -lmedia -lroot_debug
// LD_PRELOAD=libroot_debug.so ./BMediaFile-leak


//  New June 2020 version for working on #16031.
//  Adapted from
//      https://dev.haiku-os.org/raw-attachment/ticket/9945/BMediaFile-leak.cpp
//  and
//      #11752



#include <stdio.h>
#include <media/MediaFile.h>
#include <storage/Entry.h>

#include <malloc_debug.h>


int main()
{
    entry_ref ref;
#error replace this with a path of your own before compiling
    get_ref_for_path( "/tmp/Apidya_Credits.mp3", &ref );
    
    heap_debug_dump_allocations( true, find_thread(NULL) );
    //total allocations: 416; total bytes: 77964

    // do ten times the new/delete cycle, to amplify
    // the leak and make it obvious:
    for( int i = 0; i < 10; i++ )
    {
        BMediaFile * mediaFile = new BMediaFile( &ref );
        heap_debug_dump_allocations( true, find_thread(NULL) );
        
#if 1
#error try without, then with, audio track decoding?
        BMediaTrack * mediaTrack = mediaFile->TrackAt(0);  // will be Release()d in dtor
        
        media_format decodedmediaformat;
        memset( &decodedmediaformat, 0, sizeof(decodedmediaformat) );
        decodedmediaformat.type = B_MEDIA_RAW_AUDIO;
        ret = mediaTrack->DecodedFormat( &decodedmediaformat );
        
        for( ;; )
        {
            char buf[8192] = { 0 };
            int64 numread = 0;
            ret = mediaTrack->ReadFrames(buf,&numread);
    //      printf( "got %Ld frames.. ", numread );
    //heap_debug_dump_allocations( true, find_thread(NULL));// fflush(stdout);
            
            if( ret < 0 )
                break;
        }
#endif
        delete mediaFile;
        mediaFile = NULL;
        heap_debug_dump_allocations( true, find_thread(NULL) );
        
        //last of the 10 dumps shows 1MB leak:
        //total allocations: 4713; total bytes: 1233586
    }
//full list of allocations:
//heap_debug_dump_allocations( false, find_thread(NULL) );
// some 'pmff' markers at some allocations when inspecting memory:
//debugger( "0x180dd000" );
}