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comparison foosdk/sdk/foobar2000/shared/audio_math.h @ 1:20d02a178406 default tip

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author Paper <paper@tflc.us>
date Mon, 05 Jan 2026 02:15:46 -0500
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0:e9bb126753e7 1:20d02a178406
1 #pragma once
2
3 #include <stdint.h>
4 #if SIZE_MAX < UINT64_MAX
5 #define audio_sample_size 32
6 #else
7 #define audio_sample_size 64
8 #endif
9
10 #if audio_sample_size == 32
11 typedef float audio_sample;
12 #define audio_sample_asm dword
13 #elif audio_sample_size == 64
14 typedef double audio_sample;
15 #define audio_sample_asm qword
16 #else
17 #error wrong audio_sample_size
18 #endif
19
20 #define audio_sample_bytes (audio_sample_size/8)
21
22 /*
23 PROBLEM:
24 audio_math is implemented in pfc (pfc::audio_math) and in shared.dll (::audio_math)
25 We must overlay shared.dll methods on top of PFC ones
26 */
27
28 namespace audio_math
29 {
30 //! p_source/p_output can point to same buffer
31 void SHARED_EXPORT scale(const audio_sample * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale);
32 void SHARED_EXPORT convert_to_int16(const audio_sample * p_source,t_size p_count,t_int16 * p_output,audio_sample p_scale);
33 void SHARED_EXPORT convert_to_int32(const audio_sample * p_source,t_size p_count,t_int32 * p_output,audio_sample p_scale);
34 audio_sample SHARED_EXPORT convert_to_int16_calculate_peak(const audio_sample * p_source,t_size p_count,t_int16 * p_output,audio_sample p_scale);
35 void SHARED_EXPORT convert_from_int16(const t_int16 * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale);
36 void SHARED_EXPORT convert_from_int32(const t_int32 * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale);
37 audio_sample SHARED_EXPORT convert_to_int32_calculate_peak(const audio_sample * p_source,t_size p_count,t_int32 * p_output,audio_sample p_scale);
38 audio_sample SHARED_EXPORT calculate_peak(const audio_sample * p_source,t_size p_count);
39 void SHARED_EXPORT kill_denormal(audio_sample * p_buffer,t_size p_count);
40 void SHARED_EXPORT add_offset(audio_sample * p_buffer,audio_sample p_delta,t_size p_count);
41 }
42
43 namespace audio_math_shareddll = audio_math;
44 typedef pfc::audio_math audio_math_pfc;
45
46 // Overlay class, overrides specific pfc::audio_math methods
47 class fb2k_audio_math : public audio_math_pfc {
48 public:
49 static void scale(const audio_sample * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale) {
50 audio_math_shareddll::scale(p_source, p_count, p_output, p_scale);
51 }
52 static void convert_to_int16(const audio_sample * p_source,t_size p_count,t_int16 * p_output,audio_sample p_scale) {
53 audio_math_shareddll::convert_to_int16(p_source, p_count, p_output, p_scale);
54 }
55 static void convert_to_int32(const audio_sample * p_source,t_size p_count,t_int32 * p_output,audio_sample p_scale) {
56 audio_math_shareddll::convert_to_int32(p_source, p_count, p_output, p_scale);
57 }
58 static audio_sample convert_to_int16_calculate_peak(const audio_sample * p_source,t_size p_count,t_int16 * p_output,audio_sample p_scale) {
59 return audio_math_shareddll::convert_to_int16_calculate_peak(p_source,p_count,p_output,p_scale);
60 }
61 static void convert_from_int16(const t_int16 * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale) {
62 audio_math_shareddll::convert_from_int16(p_source,p_count,p_output,p_scale);
63 }
64 static void convert_from_int32(const t_int32 * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale) {
65 audio_math_shareddll::convert_from_int32(p_source,p_count,p_output,p_scale);
66 }
67 static audio_sample convert_to_int32_calculate_peak(const audio_sample * p_source,t_size p_count,t_int32 * p_output,audio_sample p_scale) {
68 return audio_math_shareddll::convert_to_int32_calculate_peak(p_source,p_count,p_output,p_scale);
69 }
70 static audio_sample calculate_peak(const audio_sample * p_source,t_size p_count) {
71 return audio_math_shareddll::calculate_peak(p_source,p_count);
72 }
73 static void kill_denormal(audio_sample * p_buffer,t_size p_count) {
74 audio_math_shareddll::kill_denormal(p_buffer, p_count);
75 }
76 static void add_offset(audio_sample * p_buffer,audio_sample p_delta,t_size p_count) {
77 audio_math_shareddll::add_offset(p_buffer,p_delta,p_count);
78 }
79 };
80
81 // Anyone trying to talk to audio_math namespace will reach fb2k_audio_math which calls the right thing
82 #define audio_math fb2k_audio_math