jack1/jack/memops.h

/*
    Copyright (C) 1999-2000 Paul Davis 

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    $Id$
*/

#ifndef __jack_memops_h__
#define __jack_memops_h__

#include <jack/types.h>

typedef	enum  {
	None,
	Rectangular,
	Triangular,
	Shaped
} DitherAlgorithm;

#define DITHER_BUF_SIZE 8
#define DITHER_BUF_MASK 7

typedef struct {
    unsigned int depth;
    float rm1;
    unsigned int idx;
    float e[DITHER_BUF_SIZE];
} dither_state_t;


void sample_move_d32u24_sS           (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_d16_sS              (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);

void sample_move_dither_rect_d32u24_sS   (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_dither_tri_d32u24_sS    (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_dither_shaped_d32u24_sS (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_dither_rect_d16_sS      (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_dither_tri_d16_sS       (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_dither_shaped_d16_sS    (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);

void sample_move_dS_s32u24           (jack_default_audio_sample_t *dst, char *src, unsigned long nsamples, unsigned long src_skip);
void sample_move_dS_s16              (jack_default_audio_sample_t *dst, char *src, unsigned long nsamples, unsigned long src_skip);

void sample_merge_d16_sS             (char *dst,  jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_merge_d32u24_sS          (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);

static __inline__ void
sample_merge (jack_default_audio_sample_t *dst, jack_default_audio_sample_t *src, unsigned long cnt)

{
	while (cnt--) {
		*dst += *src;
		dst++;
		src++;
	}
}

static __inline__ void
sample_memcpy (jack_default_audio_sample_t *dst, jack_default_audio_sample_t *src, unsigned long cnt)

{
	memcpy (dst, src, cnt * sizeof (jack_default_audio_sample_t));
}

void memset_interleave               (char *dst, char val, unsigned long bytes, unsigned long unit_bytes, unsigned long skip_bytes);
void memcpy_fake                     (char *dst, char *src, unsigned long src_bytes, unsigned long foo, unsigned long bar);

void memcpy_interleave_d16_s16       (char *dst, char *src, unsigned long src_bytes, unsigned long dst_skip_bytes, unsigned long src_skip_bytes);
void memcpy_interleave_d32_s32       (char *dst, char *src, unsigned long src_bytes, unsigned long dst_skip_bytes, unsigned long src_skip_bytes);

void merge_memcpy_interleave_d16_s16 (char *dst, char *src, unsigned long src_bytes, unsigned long dst_skip_bytes, unsigned long src_skip_bytes);
void merge_memcpy_interleave_d32_s32 (char *dst, char *src, unsigned long src_bytes, unsigned long dst_skip_bytes, unsigned long src_skip_bytes);

void merge_memcpy_d16_s16            (char *dst, char *src, unsigned long src_bytes, unsigned long foo, unsigned long bar);
void merge_memcpy_d32_s32            (char *dst, char *src, unsigned long src_bytes, unsigned long foo, unsigned long bar);

#endif /* __jack_memops_h__ */