transform_pcm.h

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#ifndef XTRANSFORM_PCM_H
#define XTRANSFORM_PCM_H

#define transform_mono_to_stereo(s, c1, pl, pr) \
transform_to_stereo(s, 1, NULL, NULL, c1, NULL, NULL, NULL, NULL, NULL, NULL, pl, pr)
#define transform_stereo_to_stereo(s, c1, c2, pl, pr) \
transform_to_stereo(s, 2, c1, c2, NULL, NULL, NULL, NULL, NULL, NULL, NULL, pl, pr)
#define transform_21_to_stereo(s, c1, c2, c3, pl, pr) \
transform_to_stereo(s, 3, c1, c3, c2, NULL, NULL, NULL, NULL, NULL, NULL, pl, pr)
#define transform_40_to_stereo(s, c1, c2, c3, c4, pl, pr) \
transform_to_stereo(s, 4, c1, c2, NULL, NULL, NULL, NULL, c3, c4, NULL, pl, pr)
#define transform_50_to_stereo(s, c1, c2, c3, c4, c5, pl, pr) \
transform_to_stereo(s, 5, c1, c3, c2, NULL, NULL, NULL, c4, c5, NULL, pl, pr)
#define transform_51_to_stereo(s, c1, c2, c3, c4, c5, c6, pl, pr) \
transform_to_stereo(s, 5, c1, c3, c2, NULL, NULL, NULL, c4, c5, c6, pl, pr)
#define transform_61_to_stereo(s, c1, c2, c3, c4, c5, c6, c7, pl, pr) \
transform_to_stereo(s, 7, c1, c3, c2, c6, c4, c5, NULL, NULL, c7, pl, pr)
#define transform_71_to_stereo(s, c1, c2, c3, c4, c5, c6, c7, c8, pl, pr) \
transform_to_stereo(s, 8, c1, c3, c2, NULL, c4, c5, c6, c7, c8, pl, pr)

/*
input channel order:                  used for: mono stereo 2.1 4.0 5.0 5.1 6.1 7.1
float *pcm_fl   1: front left/left stereo               X    X   X   X   X   X   X
float *pcm_fr   2: front right/right stereo             X    X   X   X   X   X   X
float *pcm_fc   3: (front)center/mono            X           X       X   X   X   X
float *pcm_rc   4: rear center                                               X
float *pcm_sl   5: side left                                                 X   X
float *pcm_sr   6: side right                                                X   X
float *pcm_rl   7: rear left                                     X   X   X       X
float *pcm_rr   8: rear right                                    X   X   X       X
float *pcm_lfe  9: LFE                                                   X   X   X

output channel order:
signed int16_t *pcmout_l        1: left stereo
signed int16_t *pcmout_r        2: right stereo
*/

int transform_to_stereo(long int samples, int channels, float *pcm_fl, float *pcm_fr, float *pcm_fc, float *pcm_rc, float *pcm_sl, float *pcm_sr, float *pcm_rl, float *pcm_rr, float *pcm_lfe, signed short int *pcmout_l, signed short int *pcmout_r);

inline signed short int pcm_float_to_int(float);

inline signed short int pcm_int16_to_int(int);

#endif /* XTRANSFORM_PCM_H */