1 /* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 2 * Use of this source code is governed by a BSD-style license that can be 3 * found in the LICENSE file. 4 */ 5 6 #include <stdint.h> 7 8 #include "cras_system_state.h" 9 #include "cras_mix.h" 10 #include "cras_mix_ops.h" 11 12 static const struct cras_mix_ops *ops = &mixer_ops; 13 14 static const struct cras_mix_ops* get_mixer_ops(unsigned int cpu_flags) 15 { 16 #if defined HAVE_FMA 17 if (cpu_flags & CPU_X86_FMA) 18 return &mixer_ops_fma; 19 #endif 20 #if defined HAVE_AVX2 21 if (cpu_flags & CPU_X86_AVX2) 22 return &mixer_ops_avx2; 23 #endif 24 #if defined HAVE_AVX 25 if (cpu_flags & CPU_X86_AVX) 26 return &mixer_ops_avx; 27 #endif 28 #if defined HAVE_SSE42 29 if (cpu_flags & CPU_X86_SSE4_2) 30 return &mixer_ops_sse42; 31 #endif 32 33 /* default C implementation */ 34 return &mixer_ops; 35 } 36 37 void cras_mix_init(unsigned int flags) 38 { 39 ops = get_mixer_ops(flags); 40 } 41 42 /* 43 * Exported Interface 44 */ 45 46 void cras_scale_buffer_increment(snd_pcm_format_t fmt, uint8_t *buff, 47 unsigned int frame, float scaler, 48 float increment, int channel) 49 { 50 ops->scale_buffer_increment(fmt, buff, frame * channel, scaler, 51 increment, channel); 52 } 53 54 void cras_scale_buffer(snd_pcm_format_t fmt, uint8_t *buff, unsigned int count, 55 float scaler) 56 { 57 ops->scale_buffer(fmt, buff, count, scaler); 58 } 59 60 void cras_mix_add(snd_pcm_format_t fmt, uint8_t *dst, uint8_t *src, 61 unsigned int count, unsigned int index, 62 int mute, float mix_vol) 63 { 64 ops->add(fmt, dst, src, count, index, mute, mix_vol); 65 } 66 67 void cras_mix_add_scale_stride(snd_pcm_format_t fmt, uint8_t *dst, uint8_t *src, 68 unsigned int count, unsigned int dst_stride, 69 unsigned int src_stride, float scaler) 70 { 71 ops->add_scale_stride(fmt, dst, src, count, dst_stride, src_stride, 72 scaler); 73 } 74 75 size_t cras_mix_mute_buffer(uint8_t *dst, 76 size_t frame_bytes, 77 size_t count) 78 { 79 return ops->mute_buffer(dst, frame_bytes, count); 80 } 81
