Subject: [linux-audio-dev] a little C++ guidance needed
From: Dave Phillips (dlphilp_AT_bright.net)
Date: Tue Apr 15 2003 - 17:22:40 EEST
Greetings:
I'm trying to compile the Teknocomposer software but have run into a
problem that Nick doesn't know what to do about (beyond suggesting I
update my compiler). Here's the failure point:
make[2]: Entering directory `/home/dlphilp/teknocomposer/teknocomposer'
c++ -DHAVE_CONFIG_H -I. -I. -I.. -O2 -fno-exceptions -fno-check-new
-fexceptions -c MainWindow.cxx
MainWindow.cxx:405: parse error before `{'
MainWindow.cxx:410: destructors must be member functions
MainWindow.cxx:410: virtual outside class declaration
MainWindow.cxx:418: parse error before `}'
MainWindow.cxx:420: syntax error before `*'
MainWindow.cxx:424: invalid use of undefined type `class
AppSoundDriver'
MainWindow.cxx:404: forward declaration of `class AppSoundDriver'
MainWindow.cxx:435: invalid use of undefined type `class
AppSoundDriver'
MainWindow.cxx:404: forward declaration of `class AppSoundDriver'
MainWindow.cxx: In method `AppSoundDriver::~AppSoundDriver ()':
MainWindow.cxx:443: `sizeof' applied to incomplete type
`AppSoundDriver'
MainWindow.cxx: At top level:
MainWindow.cxx:446: invalid use of undefined type `class
AppSoundDriver'
MainWindow.cxx:404: forward declaration of `class AppSoundDriver'
MainWindow.cxx:464: invalid use of undefined type `class
AppSoundDriver'
MainWindow.cxx:404: forward declaration of `class AppSoundDriver'
MainWindow.cxx:471: invalid use of undefined type `class
AppSoundDriver'
MainWindow.cxx:404: forward declaration of `class AppSoundDriver'
MainWindow.cxx: In function `int main (int, char *)':
MainWindow.cxx:2508: `theSoundDriver' undeclared (first use this
function)
MainWindow.cxx:2508: (Each undeclared identifier is reported only once
for each function it appears in.)
MainWindow.cxx:2508: parse error before `('
make[2]: *** [MainWindow.o] Error 1
make[2]: Leaving directory `/home/dlphilp/teknocomposer/teknocomposer'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/dlphilp/teknocomposer'
make: *** [all-recursive-am] Error 2
The specific code block looks like this:
/////////////////////////////////////////////////////////////////////////////
class AppSoundDriver : public SoundDriver
{
public:
AppSoundDriver(REAL sample_rate, int num_channels);
virtual ~AppSoundDriver();
// this is called to fill buffer with len samples
void Run(REAL * buffer, uint32 len);
void Start();
void Stop();
};
AppSoundDriver * theSoundDriver;
AppSoundDriver::AppSoundDriver(REAL sample_rate, int num_channels)
{
printf("Starting Sound Driver...\n");
#ifdef PORT_AUDIO_DRIVER
openPortAudio(this, sample_rate, num_channels);
#endif
#ifdef ALSA_DRIVER
openALSADriver(this, sample_rate, num_channels);
#endif
}
AppSoundDriver::~AppSoundDriver()
{
printf("Closing sound driver...\n");
#ifdef PORT_AUDIO_DRIVER
closePortAudio();
#endif
#ifdef ALSA_DRIVER
closeALSADriver();
#endif
}
//////////////////////////////////////////////////////////////////////
Nick's advice to upgrade my compiler is timely (I'm using GCC 2.96 from
RH 7.2) but unfortunately I can't make the switch right now. If there's
an obvious (or non-obvious) solution to my dilemma I'd be happy to hear
of it.
Best regards,
== Dave Phillips
The Book Of Linux Music & Sound at http://www.nostarch.com/lms.htm
The Linux Soundapps Site at http://linux-sound.org
Currently listening to: Ravi Shankar, "Raga Bilashkani Todi"
This archive was generated by hypermail 2b28 : Tue Apr 15 2003 - 17:18:02 EEST