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annotate vgmplay.c @ 1975:3701517d852c

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Avoid expensive re-init from switching to external sync after render_init has been called
author Michael Pavone <pavone@retrodev.com>
date Fri, 08 May 2020 16:52:32 -0700
parents 357878be8be6
children 7ebcbef45362
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #include "render.h"
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7 #include "ym2612.h"
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8 #include "psg.h"
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9 #include "config.h"
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10 #include "util.h"
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11 #include <stdint.h>
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12 #include <stdio.h>
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13 #include <stdlib.h>
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14 #include <string.h>
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15 #include "vgm.h"
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16 #include "system.h"
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17
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18 #define MCLKS_NTSC 53693175
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19 #define MCLKS_PAL 53203395
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20
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21 #define MCLKS_PER_68K 7
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22 #define MCLKS_PER_YM MCLKS_PER_68K
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23 #define MCLKS_PER_Z80 15
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24 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16)
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25
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26 system_header *current_system;
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27
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28 void handle_keydown(int keycode)
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29 {
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30 }
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31
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32 void handle_keyup(int keycode)
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33 {
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34 }
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35
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36 void handle_joydown(int joystick, int button)
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37 {
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38 }
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39
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40 void handle_joyup(int joystick, int button)
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41 {
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42 }
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43
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44 void handle_joy_dpad(int joystick, int dpadnum, uint8_t value)
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45 {
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46 }
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47
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48 void handle_joy_axis(int joystick, int axis, int16_t value)
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49 {
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50 }
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51
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52 void handle_joy_added(int joystick)
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53 {
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54 }
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55
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56 void handle_mouse_moved(int mouse, uint16_t x, uint16_t y, int16_t deltax, int16_t deltay)
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57 {
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58 }
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59
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60 void handle_mousedown(int mouse, int button)
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61 {
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62 }
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63
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64 void handle_mouseup(int mouse, int button)
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65 {
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66 }
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67
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68 int headless = 0;
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69
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70 #define CYCLE_LIMIT MCLKS_NTSC/60
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71 #define MAX_SOUND_CYCLES 100000
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72 tern_node * config;
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73
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74 void vgm_wait(ym2612_context * y_context, psg_context * p_context, uint32_t * current_cycle, uint32_t cycles)
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75 {
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76 while (cycles > MAX_SOUND_CYCLES)
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77 {
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78 vgm_wait(y_context, p_context, current_cycle, MAX_SOUND_CYCLES);
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79 cycles -= MAX_SOUND_CYCLES;
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80 }
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81 *current_cycle += cycles;
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82 psg_run(p_context, *current_cycle);
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83 ym_run(y_context, *current_cycle);
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84
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85 if (*current_cycle > CYCLE_LIMIT) {
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86 *current_cycle -= CYCLE_LIMIT;
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87 p_context->cycles -= CYCLE_LIMIT;
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88 y_context->current_cycle -= CYCLE_LIMIT;
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89 process_events();
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90 }
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91 }
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92
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93 int main(int argc, char ** argv)
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94 {
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95 set_exe_str(argv[0]);
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96 data_block *blocks = NULL;
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97 data_block *seek_block = NULL;
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98 uint32_t seek_offset;
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99 uint32_t block_offset;
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100
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101 uint32_t fps = 60;
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102 config = load_config(argv[0]);
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103 render_init(320, 240, "vgm play", 0);
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104
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105 uint32_t opts = 0;
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106 if (argc >= 3 && !strcmp(argv[2], "-y")) {
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107 opts |= YM_OPT_WAVE_LOG;
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108 }
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109
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110 char * lowpass_cutoff_str = tern_find_path(config, "audio\0lowpass_cutoff\0", TVAL_PTR).ptrval;
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111 uint32_t lowpass_cutoff = lowpass_cutoff_str ? atoi(lowpass_cutoff_str) : 3390;
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112
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113 ym2612_context y_context;
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114 ym_init(&y_context, MCLKS_NTSC, MCLKS_PER_YM, opts);
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115
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116 psg_context p_context;
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117 psg_init(&p_context, MCLKS_NTSC, MCLKS_PER_PSG);
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118
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119 FILE * f = fopen(argv[1], "rb");
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120 vgm_header header;
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121 fread(&header, sizeof(header), 1, f);
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122 if (header.version < 0x150 || !header.data_offset) {
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123 header.data_offset = 0xC;
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124 }
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125 fseek(f, header.data_offset + 0x34, SEEK_SET);
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126 uint32_t data_size = header.eof_offset + 4 - (header.data_offset + 0x34);
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127 uint8_t * data = malloc(data_size);
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128 fread(data, 1, data_size, f);
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129 fclose(f);
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130
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131 uint32_t mclks_sample = MCLKS_NTSC / 44100;
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132 uint32_t loop_count = 2;
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133
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134 uint8_t * end = data + data_size;
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135 uint8_t * cur = data;
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136 uint32_t current_cycle = 0;
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137 while (cur < end) {
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138 uint8_t cmd = *(cur++);
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139 switch(cmd)
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140 {
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diff changeset
141 case CMD_PSG_STEREO:
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
142 //ignore for now
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
143 cur++;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
144 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
145 case CMD_PSG:
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
146 psg_write(&p_context, *(cur++));
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
147 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
148 case CMD_YM2612_0:
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
149 ym_address_write_part1(&y_context, *(cur++));
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
150 ym_data_write(&y_context, *(cur++));
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
151 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
152 case CMD_YM2612_1:
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
153 ym_address_write_part2(&y_context, *(cur++));
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
154 ym_data_write(&y_context, *(cur++));
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
155 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
156 case CMD_WAIT: {
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
157 uint32_t wait_time = *(cur++);
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
158 wait_time |= *(cur++) << 8;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
159 wait_time *= mclks_sample;
812
574495372d1c Finish OS X support in build_release script. Fix a name conflict in vgmplay on OS X. Call set_exe_str in vgmplay and stateview
Michael Pavone <pavone@retrodev.com>
parents: 805
diff changeset
160 vgm_wait(&y_context, &p_context, &current_cycle, wait_time);
408
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
161 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
162 }
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
163 case CMD_WAIT_60:
812
574495372d1c Finish OS X support in build_release script. Fix a name conflict in vgmplay on OS X. Call set_exe_str in vgmplay and stateview
Michael Pavone <pavone@retrodev.com>
parents: 805
diff changeset
164 vgm_wait(&y_context, &p_context, &current_cycle, 735 * mclks_sample);
408
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
165 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
166 case CMD_WAIT_50:
812
574495372d1c Finish OS X support in build_release script. Fix a name conflict in vgmplay on OS X. Call set_exe_str in vgmplay and stateview
Michael Pavone <pavone@retrodev.com>
parents: 805
diff changeset
167 vgm_wait(&y_context, &p_context, &current_cycle, 882 * mclks_sample);
408
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
168 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
169 case CMD_END:
514
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
170 if (header.loop_offset && --loop_count) {
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
171 cur = data + header.loop_offset + 0x1C - (header.data_offset + 0x34);
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
172 } else {
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
173 //TODO: fade out
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
174 return 0;
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
175 }
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
176 break;
511
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
177 case CMD_DATA: {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
178 cur++; //skip compat command
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
179 uint8_t data_type = *(cur++);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
180 uint32_t data_size = *(cur++);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
181 data_size |= *(cur++) << 8;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
182 data_size |= *(cur++) << 16;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
183 data_size |= *(cur++) << 24;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
184 if (data_type == DATA_YM2612_PCM) {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
185 data_block ** curblock = &blocks;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
186 while(*curblock)
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
187 {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
188 curblock = &((*curblock)->next);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
189 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
190 *curblock = malloc(sizeof(data_block));
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
191 (*curblock)->size = data_size;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
192 (*curblock)->type = data_type;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
193 (*curblock)->data = cur;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
194 (*curblock)->next = NULL;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
195 } else {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
196 fprintf(stderr, "Skipping data block with unrecognized type %X\n", data_type);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
197 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
198 cur += data_size;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
199 break;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
200 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
201 case CMD_DATA_SEEK: {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
202 uint32_t new_offset = *(cur++);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
203 new_offset |= *(cur++) << 8;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
204 new_offset |= *(cur++) << 16;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
205 new_offset |= *(cur++) << 24;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
206 if (!seek_block || new_offset < seek_offset) {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
207 seek_block = blocks;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
208 seek_offset = 0;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
209 block_offset = 0;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
210 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
211 while (seek_block && (seek_offset - block_offset + seek_block->size) < new_offset)
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
212 {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
213 seek_offset += seek_block->size - block_offset;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
214 seek_block = seek_block->next;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
215 block_offset = 0;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
216 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
217 block_offset += new_offset-seek_offset;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
218 seek_offset = new_offset;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
219 break;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
220 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
221
408
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
222 default:
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
223 if (cmd >= CMD_WAIT_SHORT && cmd < (CMD_WAIT_SHORT + 0x10)) {
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
224 uint32_t wait_time = (cmd & 0xF) + 1;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
225 wait_time *= mclks_sample;
812
574495372d1c Finish OS X support in build_release script. Fix a name conflict in vgmplay on OS X. Call set_exe_str in vgmplay and stateview
Michael Pavone <pavone@retrodev.com>
parents: 805
diff changeset
226 vgm_wait(&y_context, &p_context, &current_cycle, wait_time);
511
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
227 } else if (cmd >= CMD_YM2612_DAC && cmd < CMD_DAC_STREAM_SETUP) {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
228 if (seek_block) {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
229 ym_address_write_part1(&y_context, 0x2A);
512
6800d30437c9 Increment sample pointer after reading a sample in VGM player
Michael Pavone <pavone@retrodev.com>
parents: 511
diff changeset
230 ym_data_write(&y_context, seek_block->data[block_offset++]);
6800d30437c9 Increment sample pointer after reading a sample in VGM player
Michael Pavone <pavone@retrodev.com>
parents: 511
diff changeset
231 seek_offset++;
6800d30437c9 Increment sample pointer after reading a sample in VGM player
Michael Pavone <pavone@retrodev.com>
parents: 511
diff changeset
232 if (block_offset > seek_block->size) {
6800d30437c9 Increment sample pointer after reading a sample in VGM player
Michael Pavone <pavone@retrodev.com>
parents: 511
diff changeset
233 seek_block = seek_block->next;
6800d30437c9 Increment sample pointer after reading a sample in VGM player
Michael Pavone <pavone@retrodev.com>
parents: 511
diff changeset
234 block_offset = 0;
6800d30437c9 Increment sample pointer after reading a sample in VGM player
Michael Pavone <pavone@retrodev.com>
parents: 511
diff changeset
235 }
511
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
236 } else {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
237 fputs("Encountered DAC write command but data seek pointer is invalid!\n", stderr);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
238 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
239 uint32_t wait_time = (cmd & 0xF);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
240 if (wait_time)
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
241 {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
242 wait_time *= mclks_sample;
812
574495372d1c Finish OS X support in build_release script. Fix a name conflict in vgmplay on OS X. Call set_exe_str in vgmplay and stateview
Michael Pavone <pavone@retrodev.com>
parents: 805
diff changeset
243 vgm_wait(&y_context, &p_context, &current_cycle, wait_time);
511
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
244 }
408
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
245 } else {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 719
diff changeset
246 fatal_error("unimplemented command: %X at offset %X\n", cmd, (unsigned int)(cur - data - 1));
408
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
247 }
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
248 }
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
249 }
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
250 return 0;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
251 }