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dddbe289fb
The S8, S16, S24 and S32 formats are now supported. The mixing process also takes into account the number of channels.
112 lines
3.5 KiB
C
112 lines
3.5 KiB
C
/* Spa
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*
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* Copyright © 2019 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <spa/utils/defs.h>
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static inline int32_t read_s24(const void *src)
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{
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const int8_t *s = src;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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return (((int32_t)s[2] << 16) | ((uint32_t)(uint8_t)s[1] << 8) | (uint32_t)(uint8_t)s[0]);
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#else
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return (((int32_t)s[0] << 16) | ((uint32_t)(uint8_t)s[1] << 8) | (uint32_t)(uint8_t)s[2]);
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#endif
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}
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static inline void write_s24(void *dst, int32_t val)
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{
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uint8_t *d = dst;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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d[0] = (uint8_t) (val);
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d[1] = (uint8_t) (val >> 8);
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d[2] = (uint8_t) (val >> 16);
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#else
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d[0] = (uint8_t) (val >> 16);
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d[1] = (uint8_t) (val >> 8);
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d[2] = (uint8_t) (val);
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#endif
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}
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#define S8_MIN -127
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#define S8_MAX 127
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#define S8_MIX(a, b) (int8_t)(SPA_CLAMP((int16_t)(a) + (int16_t)(b), S8_MIN, S8_MAX))
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#define S16_MIN -32767
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#define S16_MAX 32767
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#define S16_MIX(a, b) (int16_t)(SPA_CLAMP((int32_t)(a) + (int32_t)(b), S16_MIN, S16_MAX))
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#define S24_MIN -8388607
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#define S24_MAX 8388607
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#define S24_MIX(a, b) (int32_t)(SPA_CLAMP((int32_t)(a) + (int32_t)(b), S24_MIN, S24_MAX))
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#define S32_MIN -2147483647
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#define S32_MAX 2147483647
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#define S32_MIX(a, b) (int32_t)(SPA_CLAMP((int64_t)(a) + (int64_t)(b), S32_MIN, S32_MAX))
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#define F32_MIX(a, b) (float)((float)(a) + (float)(b))
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#define F64_MIX(a, b) (double)((double)(a) + (double)(b))
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struct mix_ops {
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uint32_t fmt;
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uint32_t n_channels;
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uint32_t cpu_flags;
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void (*clear) (struct mix_ops *ops, void * SPA_RESTRICT dst, uint32_t n_samples);
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void (*process) (struct mix_ops *ops,
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void * SPA_RESTRICT dst,
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const void * SPA_RESTRICT src[], uint32_t n_src,
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uint32_t n_samples);
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void (*free) (struct mix_ops *ops);
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const void *priv;
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};
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int mix_ops_init(struct mix_ops *ops);
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#define mix_ops_clear(ops,...) (ops)->clear(ops, __VA_ARGS__)
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#define mix_ops_process(ops,...) (ops)->process(ops, __VA_ARGS__)
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#define mix_ops_free(ops) (ops)->free(ops)
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#define DEFINE_FUNCTION(name,arch) \
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void mix_##name##_##arch(struct mix_ops *ops, void * SPA_RESTRICT dst, \
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const void * SPA_RESTRICT src[], uint32_t n_src, \
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uint32_t n_samples) \
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DEFINE_FUNCTION(s8, c);
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DEFINE_FUNCTION(s16, c);
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DEFINE_FUNCTION(s24, c);
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DEFINE_FUNCTION(s32, c);
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DEFINE_FUNCTION(f32, c);
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DEFINE_FUNCTION(f64, c);
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#if defined(HAVE_SSE)
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DEFINE_FUNCTION(f32, sse);
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#endif
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#if defined(HAVE_SSE2)
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DEFINE_FUNCTION(f64, sse2);
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#endif
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#if defined(HAVE_AVX)
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DEFINE_FUNCTION(f32, avx);
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#endif
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