>Hi,
> Im trying to compile a program that uses alsa lib 0.9 and since by just
>
>including alsa/asoundlib.h it doesnt give the compiler a valid definition of
>the snd_pcm_hw_params_t Im wondering what else I have to include for my
>program to compile.
its an opaque type. you can only declare a pointer to it, then call
the functions to allocate one and release it:
snd_pcm_hw_params_t *hw_params;
snd_pcm_sw_params_t *sw_params;
snd_pcm_hw_params_malloc (&hw_params);
snd_pcm_sw_params_malloc (&sw_params);
snd_pcm_hw_params_free (&hw_params);
snd_pcm_sw_params_free (&sw_params);
there are also stack-based alloca functions too, for params objects
that only need exist for a single function scope.
snd_pcm_hw_params_alloca (&hw_params);
snd_pcm_sw_params_alloca (&sw_params);
this design is there to ensure binary compatibility in future versions
of ALSA should the nature of the structs change.
--p
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