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https://gitlab.freedesktop.org/pipewire/pipewire
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934ab3036e
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49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/* Spa */
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/* SPDX-FileCopyrightText: Copyright © 2019 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include <spa/utils/defs.h>
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#include "mix-ops.h"
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#define MAKE_FUNC(name,type,atype,accum,clamp,zero) \
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void mix_ ##name## _c(struct mix_ops *ops, \
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void * SPA_RESTRICT dst, const void * SPA_RESTRICT src[], \
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uint32_t n_src, uint32_t n_samples) \
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{ \
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uint32_t i, n; \
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type *d = dst; \
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const type **s = (const type **)src; \
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n_samples *= ops->n_channels; \
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if (n_src == 0 && zero) \
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memset(dst, 0, n_samples * sizeof(type)); \
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else if (n_src == 1) { \
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if (dst != src[0]) \
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spa_memcpy(dst, src[0], n_samples * sizeof(type)); \
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} else { \
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for (n = 0; n < n_samples; n++) { \
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atype ac = 0; \
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for (i = 0; i < n_src; i++) \
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ac = accum (ac, s[i][n]); \
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d[n] = clamp (ac); \
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} \
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} \
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}
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MAKE_FUNC(s8, int8_t, int16_t, S8_ACCUM, S8_CLAMP, true);
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MAKE_FUNC(u8, uint8_t, int16_t, U8_ACCUM, U8_CLAMP, false);
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MAKE_FUNC(s16, int16_t, int32_t, S16_ACCUM, S16_CLAMP, true);
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MAKE_FUNC(u16, uint16_t, int16_t, U16_ACCUM, U16_CLAMP, false);
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MAKE_FUNC(s24, int24_t, int32_t, S24_ACCUM, S24_CLAMP, false);
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MAKE_FUNC(u24, uint24_t, int32_t, U24_ACCUM, U24_CLAMP, false);
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MAKE_FUNC(s32, int32_t, int64_t, S32_ACCUM, S32_CLAMP, true);
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MAKE_FUNC(u32, uint32_t, int64_t, U32_ACCUM, U32_CLAMP, false);
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MAKE_FUNC(s24_32, int32_t, int32_t, S24_32_ACCUM, S24_32_CLAMP, true);
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MAKE_FUNC(u24_32, uint32_t, int32_t, U24_32_ACCUM, U24_32_CLAMP, false);
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MAKE_FUNC(f32, float, float, F32_ACCUM, F32_CLAMP, true);
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MAKE_FUNC(f64, double, double, F64_ACCUM, F64_CLAMP, true);
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