Mercurial > repos > blastem

annotate render_audio.c @ 2654:6068d32b756c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implement serialization for new 68K core
author Michael Pavone <pavone@retrodev.com>
date Sun, 02 Mar 2025 17:34:02 -0800
parents 35f765c2bc87
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1 #include <limits.h>
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2 #include <string.h>
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3 #include <stdlib.h>
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
4 #include <math.h>
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
5 #include "render_audio.h"
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
6 #include "util.h"
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
7 #include "config.h"
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
8 #include "blastem.h"
2304
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
9 #include "wave.h"
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
10
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
11 static uint8_t output_channels;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
12 static uint32_t buffer_samples, sample_rate;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
13
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
14 static audio_source *audio_sources[8];
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
15 static audio_source *inactive_audio_sources[8];
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
16 static uint8_t num_audio_sources;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
17 static uint8_t num_inactive_audio_sources;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
18
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
19 static float overall_gain_mult, *mix_buf;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
20 static int sample_size;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
21
2304
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
22 static FILE *wav_file;
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
23 void render_end_audio(void)
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
24 {
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
25 render_lock_audio();
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
26 if (wav_file) {
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
27 wave_finalize(wav_file);
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
28 wav_file = NULL;
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
29 }
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
30 render_unlock_audio();
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
31 }
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
32
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
33 void render_save_audio(char *path)
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
34 {
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
35 render_end_audio();
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
36 FILE *f = fopen(path, "wb");
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
37 if (f) {
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
38 wave_init(f, sample_rate, 16, 2);
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
39 render_lock_audio();
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
40 wav_file = f;
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
41 render_unlock_audio();
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
42 printf("Saving audio to %s\n", path);
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
43 } else {
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
44 warning("Failed to open %s for writing\n", path);
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
45 }
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
46 free(path);
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
47 }
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
48
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
49 typedef void (*conv_func)(float *samples, void *vstream, int sample_count);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
50
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
51 static void convert_null(float *samples, void *vstream, int sample_count)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
52 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
53 memset(vstream, 0, sample_count * sample_size);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
54 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
55
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
56 static void convert_s16(float *samples, void *vstream, int sample_count)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
57 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
58 int16_t *stream = vstream;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
59 for (int16_t *end = stream + sample_count; stream < end; stream++, samples++)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
60 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
61 float sample = *samples;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
62 int16_t out_sample;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
63 if (sample >= 1.0f) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
64 out_sample = 0x7FFF;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
65 } else if (sample <= -1.0f) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
66 out_sample = -0x8000;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
67 } else {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
68 out_sample = sample * 0x7FFF;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
69 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
70 *stream = out_sample;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
71 }
2304
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
72 if (wav_file) {
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
73 fwrite(vstream, sizeof(int16_t), sample_count, wav_file);
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
74 }
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
75 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
76
2304
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
77 static int16_t *wave_buffer;
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
78 static int wave_buffer_samples;
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
79 static void clamp_f32(float *samples, void *vstream, int sample_count)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
80 {
2304
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
81 float *start = samples;
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
82 for (int cur_count = sample_count; cur_count > 0; cur_count--, samples++)
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
83 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
84 float sample = *samples;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
85 if (sample > 1.0f) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
86 sample = 1.0f;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
87 } else if (sample < -1.0f) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
88 sample = -1.0f;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
89 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
90 *samples = sample;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
91 }
2304
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
92 if (wav_file) {
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
93 if (!wave_buffer) {
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
94 wave_buffer = calloc(sample_count, sizeof(int16_t));
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
95 wave_buffer_samples = sample_count;
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
96 } else if (sample_count < wave_buffer_samples) {
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
97 wave_buffer = realloc(wave_buffer, sizeof(int16_t) * sample_count);
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
98 wave_buffer_samples = sample_count;
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
99 }
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
100 convert_s16(start, wave_buffer, sample_count);
b3832f73444f Save audio to a wave file when saving video to APNG
Michael Pavone <pavone@retrodev.com>
parents: 2093
diff changeset
101 }
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
102 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
103
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
104 static int32_t mix_f32(audio_source *audio, float *stream, int samples)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
105 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
106 float *end = stream + samples;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
107 int16_t *src = audio->front;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
108 uint32_t i = audio->read_start;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
109 uint32_t i_end = audio->read_end;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
110 float *cur = stream;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
111 float gain_mult = audio->gain_mult * overall_gain_mult;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
112 size_t first_add = output_channels > 1 ? 1 : 0, second_add = output_channels > 1 ? output_channels - 1 : 1;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
113 if (audio->num_channels == 1) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
114 while (cur < end && i != i_end)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
115 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
116 *cur += gain_mult * ((float)src[i]) / 0x7FFF;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
117 cur += first_add;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
118 *cur += gain_mult * ((float)src[i++]) / 0x7FFF;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
119 cur += second_add;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
120 i &= audio->mask;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
121 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
122 } else {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
123 while(cur < end && i != i_end)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
124 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
125 *cur += gain_mult * ((float)src[i++]) / 0x7FFF;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
126 cur += first_add;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
127 *cur += gain_mult * ((float)src[i++]) / 0x7FFF;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
128 cur += second_add;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
129 i &= audio->mask;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
130 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
131 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
132 if (!render_is_audio_sync()) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
133 audio->read_start = i;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
134 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
135 if (cur != end) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
136 debug_message("Underflow of %d samples, read_start: %d, read_end: %d, mask: %X\n", (int)(end-cur)/2, audio->read_start, audio->read_end, audio->mask);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
137 return (cur-end)/2;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
138 } else {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
139 return ((i_end - i) & audio->mask) / audio->num_channels;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
140 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
141 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
142
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
143 static conv_func convert;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
144
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
145
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
146 int mix_and_convert(unsigned char *byte_stream, int len, int *min_remaining_out)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
147 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
148 int samples = len / sample_size;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
149 float *mix_dest = mix_buf ? mix_buf : (float *)byte_stream;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
150 memset(mix_dest, 0, samples * sizeof(float));
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
151 int min_buffered = INT_MAX;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
152 int min_remaining_buffer = INT_MAX;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
153 for (uint8_t i = 0; i < num_audio_sources; i++)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
154 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
155 int buffered = mix_f32(audio_sources[i], mix_dest, samples);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
156 int remaining = (audio_sources[i]->mask + 1) / audio_sources[i]->num_channels - buffered;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
157 min_buffered = buffered < min_buffered ? buffered : min_buffered;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
158 min_remaining_buffer = remaining < min_remaining_buffer ? remaining : min_remaining_buffer;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
159 audio_sources[i]->front_populated = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
160 render_buffer_consumed(audio_sources[i]);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
161 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
162 convert(mix_dest, byte_stream, samples);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
163 if (min_remaining_out) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
164 *min_remaining_out = min_remaining_buffer;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
165 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
166 return min_buffered;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
167 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
168
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
169 uint8_t all_sources_ready(void)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
170 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
171 uint8_t num_populated = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
172 num_populated = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
173 for (uint8_t i = 0; i < num_audio_sources; i++)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
174 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
175 if (audio_sources[i]->front_populated) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
176 num_populated++;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
177 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
178 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
179 return num_populated == num_audio_sources;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
180 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
181
2093
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
182 uint8_t audio_deadlock_hack(void)
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
183 {
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
184 uint32_t min_buffer_pos = 0xFFFFFFFFU;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
185 for (uint8_t i = 0; i < num_audio_sources; i++)
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
186 {
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
187 if (audio_sources[i]->front_populated) {
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
188 uint32_t buffer_pos = audio_sources[i]->buffer_pos;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
189 if (audio_sources[i]->num_channels == 1) {
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
190 buffer_pos *= 2;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
191 }
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
192 if (buffer_pos < min_buffer_pos) {
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
193 min_buffer_pos = buffer_pos;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
194 }
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
195 }
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
196 }
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
197 uint8_t do_signal = 0;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
198 for (uint8_t i = 0; i < num_audio_sources; i++)
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
199 {
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
200 if (!audio_sources[i]->front_populated) {
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
201 audio_sources[i]->front_populated = 1;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
202 int16_t *tmp = audio_sources[i]->front;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
203 audio_sources[i]->front = audio_sources[i]->back;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
204 audio_sources[i]->back = tmp;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
205 if (audio_sources[i]->num_channels == 2) {
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
206 audio_sources[i]->buffer_pos = min_buffer_pos;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
207 } else {
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
208 audio_sources[i]->buffer_pos = min_buffer_pos / 2;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
209 }
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
210 do_signal = 1;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
211 }
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
212 }
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
213 return do_signal;
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
214 }
46ee354f29bd Hack fix for audio deadlock issue
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
215
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
216 #define BUFFER_INC_RES 0x40000000UL
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
217
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
218 void render_audio_adjust_clock(audio_source *src, uint64_t master_clock, uint64_t sample_divider)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
219 {
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
220 src->buffer_inc = ((BUFFER_INC_RES * sample_divider * (uint64_t)sample_rate) / master_clock);
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
221 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
222
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
223 void render_audio_adjust_speed(float adjust_ratio)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
224 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
225 for (uint8_t i = 0; i < num_audio_sources; i++)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
226 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
227 audio_sources[i]->buffer_inc = ((double)audio_sources[i]->buffer_inc) + ((double)audio_sources[i]->buffer_inc) * adjust_ratio + 0.5;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
228 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
229 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
230
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
231 audio_source *render_audio_source(const char *name, uint64_t master_clock, uint64_t sample_divider, uint8_t channels)
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
232 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
233 audio_source *ret = NULL;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
234 uint32_t alloc_size = render_is_audio_sync() ? channels * buffer_samples : nearest_pow2(render_min_buffered() * 4 * channels);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
235 render_lock_audio();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
236 if (num_audio_sources < 8) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
237 ret = calloc(1, sizeof(audio_source));
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
238 ret->name = name;
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
239 ret->back = malloc(alloc_size * sizeof(int16_t));
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
240 ret->front = render_is_audio_sync() ? malloc(alloc_size * sizeof(int16_t)) : ret->back;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
241 ret->front_populated = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
242 ret->opaque = render_new_audio_opaque();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
243 ret->num_channels = channels;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
244 audio_sources[num_audio_sources++] = ret;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
245 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
246 render_unlock_audio();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
247 if (!ret) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
248 fatal_error("Too many audio sources!");
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
249 } else {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
250 render_audio_adjust_clock(ret, master_clock, sample_divider);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
251 double lowpass_cutoff = get_lowpass_cutoff(config);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
252 double rc = (1.0 / lowpass_cutoff) / (2.0 * M_PI);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
253 ret->dt = 1.0 / ((double)master_clock / (double)(sample_divider));
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
254 double alpha = ret->dt / (ret->dt + rc);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
255 ret->lowpass_alpha = (int32_t)(((double)0x10000) * alpha);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
256 ret->buffer_pos = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
257 ret->buffer_fraction = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
258 ret->last_left = ret->last_right = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
259 ret->read_start = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
260 ret->read_end = render_is_audio_sync() ? buffer_samples * channels : 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
261 ret->mask = render_is_audio_sync() ? 0xFFFFFFFF : alloc_size-1;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
262 ret->gain_mult = 1.0f;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
263 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
264 render_audio_created(ret);
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
265
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
266 return ret;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
267 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
268
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
269
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
270 static float db_to_mult(float gain)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
271 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
272 return powf(10.0f, gain/20.0f);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
273 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
274
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
275 void render_audio_source_gaindb(audio_source *src, float gain)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
276 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
277 src->gain_mult = db_to_mult(gain);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
278 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
279
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
280 void render_pause_source(audio_source *src)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
281 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
282 uint8_t found = 0, remaining_sources;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
283 render_lock_audio();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
284 for (uint8_t i = 0; i < num_audio_sources; i++)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
285 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
286 if (audio_sources[i] == src) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
287 audio_sources[i] = audio_sources[--num_audio_sources];
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
288 found = 1;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
289 remaining_sources = num_audio_sources;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
290 break;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
291 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
292 }
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
293
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
294 render_unlock_audio();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
295 if (found) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
296 render_source_paused(src, remaining_sources);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
297 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
298 inactive_audio_sources[num_inactive_audio_sources++] = src;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
299 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
300
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
301 void render_resume_source(audio_source *src)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
302 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
303 render_lock_audio();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
304 if (num_audio_sources < 8) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
305 audio_sources[num_audio_sources++] = src;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
306 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
307 render_unlock_audio();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
308 for (uint8_t i = 0; i < num_inactive_audio_sources; i++)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
309 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
310 if (inactive_audio_sources[i] == src) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
311 inactive_audio_sources[i] = inactive_audio_sources[--num_inactive_audio_sources];
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
312 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
313 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
314 render_source_resumed(src);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
315 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
316
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
317 void render_free_source(audio_source *src)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
318 {
1870
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
319 uint8_t found = 0;
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
320 for (uint8_t i = 0; i < num_inactive_audio_sources; i++)
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
321 {
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
322 if (inactive_audio_sources[i] == src) {
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
323 inactive_audio_sources[i] = inactive_audio_sources[--num_inactive_audio_sources];
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
324 found = 1;
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
325 break;
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
326 }
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
327 }
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
328 if (!found) {
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
329 render_pause_source(src);
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
330 num_inactive_audio_sources--;
e4671a39d155 Properly handle freeing a paused audio source. Fixes crash when repeatedly reloading a ROM or loading a sequence of different ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1865
diff changeset
331 }
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
332
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
333 free(src->front);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
334 if (render_is_audio_sync()) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
335 free(src->back);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
336 render_free_audio_opaque(src->opaque);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
337 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
338 free(src);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
339 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
340
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
341 static int16_t lowpass_sample(audio_source *src, int16_t last, int16_t current)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
342 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
343 int32_t tmp = current * src->lowpass_alpha + last * (0x10000 - src->lowpass_alpha);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
344 current = tmp >> 16;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
345 return current;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
346 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
347
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
348 static void interp_sample(audio_source *src, int16_t last, int16_t current)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
349 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
350 int64_t tmp = last * ((src->buffer_fraction << 16) / src->buffer_inc);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
351 tmp += current * (0x10000 - ((src->buffer_fraction << 16) / src->buffer_inc));
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
352 src->back[src->buffer_pos++] = tmp >> 16;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
353 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
354
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
355 static uint32_t sync_samples;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
356 void render_put_mono_sample(audio_source *src, int16_t value)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
357 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
358 value = lowpass_sample(src, src->last_left, value);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
359 src->buffer_fraction += src->buffer_inc;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
360 uint32_t base = render_is_audio_sync() ? 0 : src->read_end;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
361 while (src->buffer_fraction > BUFFER_INC_RES)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
362 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
363 src->buffer_fraction -= BUFFER_INC_RES;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
364 interp_sample(src, src->last_left, value);
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
365
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
366 if (((src->buffer_pos - base) & src->mask) >= sync_samples) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
367 render_do_audio_ready(src);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
368 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
369 src->buffer_pos &= src->mask;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
370 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
371 src->last_left = value;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
372 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
373
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
374 void render_put_stereo_sample(audio_source *src, int16_t left, int16_t right)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
375 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
376 left = lowpass_sample(src, src->last_left, left);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
377 right = lowpass_sample(src, src->last_right, right);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
378 src->buffer_fraction += src->buffer_inc;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
379 uint32_t base = render_is_audio_sync() ? 0 : src->read_end;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
380 while (src->buffer_fraction > BUFFER_INC_RES)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
381 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
382 src->buffer_fraction -= BUFFER_INC_RES;
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
383
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
384 interp_sample(src, src->last_left, left);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
385 interp_sample(src, src->last_right, right);
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
386
1865
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
387 if (((src->buffer_pos - base) & src->mask)/2 >= sync_samples) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
388 render_do_audio_ready(src);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
389 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
390 src->buffer_pos &= src->mask;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
391 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
392 src->last_left = left;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
393 src->last_right = right;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
394 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
395
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
396 static void update_source(audio_source *src, double rc, uint8_t sync_changed)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
397 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
398 double alpha = src->dt / (src->dt + rc);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
399 int32_t lowpass_alpha = (int32_t)(((double)0x10000) * alpha);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
400 src->lowpass_alpha = lowpass_alpha;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
401 if (sync_changed) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
402 uint32_t alloc_size = render_is_audio_sync() ? src->num_channels * buffer_samples : nearest_pow2(render_min_buffered() * 4 * src->num_channels);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
403 src->back = realloc(src->back, alloc_size * sizeof(int16_t));
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
404 if (render_is_audio_sync()) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
405 src->front = malloc(alloc_size * sizeof(int16_t));
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
406 } else {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
407 free(src->front);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
408 src->front = src->back;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
409 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
410 src->mask = render_is_audio_sync() ? 0xFFFFFFFF : alloc_size-1;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
411 src->read_start = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
412 src->read_end = render_is_audio_sync() ? buffer_samples * src->num_channels : 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
413 src->buffer_pos = 0;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
414 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
415 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
416
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
417 uint8_t old_audio_sync;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
418 void render_audio_initialized(render_audio_format format, uint32_t rate, uint8_t channels, uint32_t buffer_size, int sample_size_in)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
419 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
420 sample_rate = rate;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
421 output_channels = channels;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
422 buffer_samples = buffer_size;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
423 sample_size = sample_size_in;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
424 if (mix_buf) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
425 free(mix_buf);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
426 mix_buf = NULL;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
427 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
428 switch(format)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
429 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
430 case RENDER_AUDIO_S16:
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
431 convert = convert_s16;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
432 mix_buf = calloc(output_channels * buffer_samples, sizeof(float));
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
433 break;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
434 case RENDER_AUDIO_FLOAT:
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
435 convert = clamp_f32;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
436 break;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
437 case RENDER_AUDIO_UNKNOWN:
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
438 convert = convert_null;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
439 mix_buf = calloc(output_channels * buffer_samples, sizeof(float));
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
440 break;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
441 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
442 uint32_t syncs = render_audio_syncs_per_sec();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
443 if (syncs) {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
444 sync_samples = rate / syncs;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
445 } else {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
446 sync_samples = buffer_samples;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
447 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
448 char * gain_str = tern_find_path(config, "audio\0gain\0", TVAL_PTR).ptrval;
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
449 overall_gain_mult = db_to_mult(gain_str ? atof(gain_str) : 0.0f);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
450 uint8_t sync_changed = old_audio_sync != render_is_audio_sync();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
451 old_audio_sync = render_is_audio_sync();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
452 double lowpass_cutoff = get_lowpass_cutoff(config);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
453 double rc = (1.0 / lowpass_cutoff) / (2.0 * M_PI);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
454 render_lock_audio();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
455 for (uint8_t i = 0; i < num_audio_sources; i++)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
456 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
457 update_source(audio_sources[i], rc, sync_changed);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
458 }
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
459 render_unlock_audio();
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
460 for (uint8_t i = 0; i < num_inactive_audio_sources; i++)
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
461 {
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
462 update_source(inactive_audio_sources[i], rc, sync_changed);
4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
463 }
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 1870
diff changeset
464 }