1 /* SPDX-License-Identifier: BSD-3-Clause
2 *
3 * Copyright(c) 2017 Intel Corporation. All rights reserved.
4 *
5 * Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
6 */
7
8 #ifndef __SOF_AUDIO_SRC_SRC_H__
9 #define __SOF_AUDIO_SRC_SRC_H__
10
11 #include <stddef.h>
12 #include <stdint.h>
13
14 struct src_param {
15 int fir_s1;
16 int fir_s2;
17 int out_s1;
18 int out_s2;
19 int sbuf_length;
20 int src_multich;
21 int total;
22 int blk_in;
23 int blk_out;
24 int stage1_times;
25 int stage2_times;
26 int idx_in;
27 int idx_out;
28 int nch;
29 };
30
31 struct src_stage {
32 const int idm;
33 const int odm;
34 const int num_of_subfilters;
35 const int subfilter_length;
36 const int filter_length;
37 const int blk_in;
38 const int blk_out;
39 const int halfband;
40 const int shift;
41 const void *coefs; /* Can be int16_t or int32_t depending on config */
42 };
43
44 struct src_state {
45 int fir_delay_size; /* samples */
46 int out_delay_size; /* samples */
47 int32_t *fir_delay;
48 int32_t *out_delay;
49 int32_t *fir_wp;
50 int32_t *out_rp;
51 };
52
53 struct polyphase_src {
54 int number_of_stages;
55 struct src_stage *stage1;
56 struct src_stage *stage2;
57 struct src_state state1;
58 struct src_state state2;
59 };
60
61 struct src_stage_prm {
62 int nch;
63 int times;
64 void *x_rptr;
65 void *x_end_addr;
66 size_t x_size;
67 void *y_wptr;
68 void *y_addr;
69 void *y_end_addr;
70 size_t y_size;
71 int shift;
72 struct src_state *state;
73 struct src_stage *stage;
74 };
75
src_inc_wrap(int32_t ** ptr,int32_t * end,size_t size)76 static inline void src_inc_wrap(int32_t **ptr, int32_t *end, size_t size)
77 {
78 if (*ptr >= end)
79 *ptr = (int32_t *)((uint8_t *)*ptr - size);
80 }
81
src_dec_wrap(int32_t ** ptr,int32_t * addr,size_t size)82 static inline void src_dec_wrap(int32_t **ptr, int32_t *addr, size_t size)
83 {
84 if (*ptr < addr)
85 *ptr = (int32_t *)((uint8_t *)*ptr + size);
86 }
87
88 #if CONFIG_FORMAT_S16LE
src_inc_wrap_s16(int16_t ** ptr,int16_t * end,size_t size)89 static inline void src_inc_wrap_s16(int16_t **ptr, int16_t *end, size_t size)
90 {
91 if (*ptr >= end)
92 *ptr = (int16_t *)((uint8_t *)*ptr - size);
93 }
94
src_dec_wrap_s16(int16_t ** ptr,int16_t * addr,size_t size)95 static inline void src_dec_wrap_s16(int16_t **ptr, int16_t *addr, size_t size)
96 {
97 if (*ptr < addr)
98 *ptr = (int16_t *)((uint8_t *)*ptr + size);
99 }
100 #endif /* CONFIG_FORMAT_S16LE */
101
102 void src_polyphase_reset(struct polyphase_src *src);
103
104 int src_polyphase_init(struct polyphase_src *src, struct src_param *p,
105 int32_t *delay_lines_start);
106
107 int src_polyphase(struct polyphase_src *src, int32_t x[], int32_t y[],
108 int n_in);
109
110 #if CONFIG_FORMAT_S24LE || CONFIG_FORMAT_S32LE
111 void src_polyphase_stage_cir(struct src_stage_prm *s);
112 #endif /* CONFIG_FORMAT_S24LE || CONFIG_FORMAT_S32LE */
113
114 #if CONFIG_FORMAT_S16LE
115 void src_polyphase_stage_cir_s16(struct src_stage_prm *s);
116 #endif /* CONFIG_FORMAT_S16LE */
117
118 int src_buffer_lengths(struct src_param *a, int fs_in, int fs_out, int nch,
119 int source_frames);
120
121 int32_t src_input_rates(void);
122
123 int32_t src_output_rates(void);
124
125 #endif /* __SOF_AUDIO_SRC_SRC_H__ */
126
