//  Programmed by Jedidiah Barber
//  Released into the public domain


#include <sndfile.h>
#include "c_asndfile_virtual.h"



sf_count_t c_filelen_hook(void * user_data) {
    return (sf_count_t) ada_filelen_hook(user_data);
}


sf_count_t c_seek_hook(sf_count_t offset, int whence, void * user_data) {
    return (sf_count_t) ada_seek_hook((int64_t) offset, whence, user_data);
}


sf_count_t c_read_hook(void * ptr, sf_count_t count, void * user_data) {
    return (sf_count_t) ada_read_hook(ptr, (int64_t) count, user_data);
}


sf_count_t c_write_hook(const void * ptr, sf_count_t count, void * user_data) {
    return (sf_count_t) ada_write_hook(ptr, (int64_t) count, user_data);
}


sf_count_t c_tell_hook(void * user_data) {
    return (sf_count_t) ada_tell_hook(user_data);
}


SF_VIRTUAL_IO hooks = {
    .get_filelen = &c_filelen_hook,
    .seek = &c_seek_hook,
    .read = &c_read_hook,
    .write = &c_write_hook,
    .tell = &c_tell_hook
};


SNDFILE * asf_open_virtual(int mode, Asf_Info * sfinfo, void * user_data) {
    SF_INFO actual;

    actual.frames = (sf_count_t)sfinfo->frames;
    actual.samplerate = sfinfo->samplerate;
    actual.channels = sfinfo->channels;
    actual.format = sfinfo->major & sfinfo->minor & sfinfo->endian;
    actual.sections = sfinfo->sections;
    actual.seekable = sfinfo->seekable;

    SNDFILE * result = sf_open_virtual(&hooks, mode, &actual, user_data);
    if (result == NULL) { return NULL; }

    sfinfo->frames = (long long)actual.frames;
    sfinfo->samplerate = actual.samplerate;
    sfinfo->channels = actual.channels;
    sfinfo->major = actual.format & SF_FORMAT_TYPEMASK;
    sfinfo->minor = actual.format & SF_FORMAT_SUBMASK;
    sfinfo->endian = actual.format & SF_FORMAT_ENDMASK;
    sfinfo->sections = actual.sections;
    sfinfo->seekable = actual.seekable;

    return result;
}