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annotate vgmplay.c @ 1405:ee19270495e8

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Force texture y-coordinate to middle of line in default shader. Substantially improves picture when linear texture filtering is used
author Michael Pavone <pavone@retrodev.com>
date Sat, 17 Jun 2017 15:56:07 -0700
parents 57637d17b59e
children 55d357bb4398
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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
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17 #define MCLKS_NTSC 53693175
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18 #define MCLKS_PAL 53203395
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19
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20 #define MCLKS_PER_68K 7
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21 #define MCLKS_PER_YM MCLKS_PER_68K
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22 #define MCLKS_PER_Z80 15
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23 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16)
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24
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25 void handle_keydown(int keycode)
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26 {
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27 }
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28
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29 void handle_keyup(int keycode)
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30 {
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31 }
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32
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33 void handle_joydown(int joystick, int button)
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34 {
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35 }
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36
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37 void handle_joyup(int joystick, int button)
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38 {
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39 }
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40
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41 void handle_joy_dpad(int joystick, int dpadnum, uint8_t value)
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42 {
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43 }
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44
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45 void handle_joy_axis(int joystick, int axis, int16_t value)
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46 {
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47 }
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48
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49 void handle_joy_added(int joystick)
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50 {
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51 }
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52
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53 void handle_mouse_moved(int mouse, uint16_t x, uint16_t y, int16_t deltax, int16_t deltay)
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54 {
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55 }
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56
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57 void handle_mousedown(int mouse, int button)
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58 {
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59 }
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60
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61 void handle_mouseup(int mouse, int button)
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62 {
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63 }
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64
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65 int headless = 0;
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66
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67 #define CYCLE_LIMIT MCLKS_NTSC/60
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68 #define MAX_SOUND_CYCLES 100000
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69 tern_node * config;
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70
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71 void vgm_wait(ym2612_context * y_context, psg_context * p_context, uint32_t * current_cycle, uint32_t cycles)
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72 {
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73 while (cycles > MAX_SOUND_CYCLES)
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74 {
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75 vgm_wait(y_context, p_context, current_cycle, MAX_SOUND_CYCLES);
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76 cycles -= MAX_SOUND_CYCLES;
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77 }
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78 *current_cycle += cycles;
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79 psg_run(p_context, *current_cycle);
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80 ym_run(y_context, *current_cycle);
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81
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82 if (*current_cycle > CYCLE_LIMIT) {
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83 *current_cycle -= CYCLE_LIMIT;
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84 p_context->cycles -= CYCLE_LIMIT;
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85 y_context->current_cycle -= CYCLE_LIMIT;
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86 process_events();
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87 }
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88 }
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89
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90 int main(int argc, char ** argv)
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91 {
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92 set_exe_str(argv[0]);
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93 data_block *blocks = NULL;
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94 data_block *seek_block = NULL;
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95 uint32_t seek_offset;
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96 uint32_t block_offset;
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97
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98 uint32_t fps = 60;
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99 config = load_config(argv[0]);
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100 render_init(320, 240, "vgm play", 0);
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101
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102 uint32_t opts = 0;
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103 if (argc >= 3 && !strcmp(argv[2], "-y")) {
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104 opts |= YM_OPT_WAVE_LOG;
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105 }
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106
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107 char * lowpass_cutoff_str = tern_find_path(config, "audio\0lowpass_cutoff\0", TVAL_PTR).ptrval;
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108 uint32_t lowpass_cutoff = lowpass_cutoff_str ? atoi(lowpass_cutoff_str) : 3390;
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109
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110 ym2612_context y_context;
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111 ym_init(&y_context, render_sample_rate(), MCLKS_NTSC, MCLKS_PER_YM, render_audio_buffer(), opts, lowpass_cutoff);
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112
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113 psg_context p_context;
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114 psg_init(&p_context, render_sample_rate(), MCLKS_NTSC, MCLKS_PER_PSG, render_audio_buffer(), lowpass_cutoff);
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115
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116 FILE * f = fopen(argv[1], "rb");
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117 vgm_header header;
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118 fread(&header, sizeof(header), 1, f);
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119 if (header.version < 0x150 || !header.data_offset) {
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120 header.data_offset = 0xC;
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121 }
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122 fseek(f, header.data_offset + 0x34, SEEK_SET);
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123 uint32_t data_size = header.eof_offset + 4 - (header.data_offset + 0x34);
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124 uint8_t * data = malloc(data_size);
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125 fread(data, 1, data_size, f);
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126 fclose(f);
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127
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128 uint32_t mclks_sample = MCLKS_NTSC / 44100;
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129 uint32_t loop_count = 2;
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130
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131 uint8_t * end = data + data_size;
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132 uint8_t * cur = data;
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133 uint32_t current_cycle = 0;
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134 while (cur < end) {
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135 uint8_t cmd = *(cur++);
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136 switch(cmd)
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137 {
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138 case CMD_PSG_STEREO:
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139 //ignore for now
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diff changeset
140 cur++;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
141 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
142 case CMD_PSG:
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
143 psg_write(&p_context, *(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_YM2612_0:
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
146 ym_address_write_part1(&y_context, *(cur++));
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
147 ym_data_write(&y_context, *(cur++));
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
148 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
149 case CMD_YM2612_1:
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
150 ym_address_write_part2(&y_context, *(cur++));
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
151 ym_data_write(&y_context, *(cur++));
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
152 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
153 case CMD_WAIT: {
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
154 uint32_t wait_time = *(cur++);
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
155 wait_time |= *(cur++) << 8;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
156 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
157 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
158 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
159 }
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
160 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
161 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
162 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
163 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
164 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
165 break;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
166 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
167 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
168 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
169 } else {
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
170 //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
171 return 0;
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
172 }
f66c78cbdcaa Implement per-channel wave logging and primitive looping support in vgm player.
Michael Pavone <pavone@retrodev.com>
parents: 512
diff changeset
173 break;
511
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
174 case CMD_DATA: {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
175 cur++; //skip compat command
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
176 uint8_t data_type = *(cur++);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
177 uint32_t data_size = *(cur++);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
178 data_size |= *(cur++) << 8;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
179 data_size |= *(cur++) << 16;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
180 data_size |= *(cur++) << 24;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
181 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
182 data_block ** curblock = &blocks;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
183 while(*curblock)
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
184 {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
185 curblock = &((*curblock)->next);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
186 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
187 *curblock = malloc(sizeof(data_block));
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
188 (*curblock)->size = data_size;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
189 (*curblock)->type = data_type;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
190 (*curblock)->data = cur;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
191 (*curblock)->next = NULL;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
192 } else {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
193 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
194 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
195 cur += data_size;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
196 break;
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 case CMD_DATA_SEEK: {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
199 uint32_t new_offset = *(cur++);
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
200 new_offset |= *(cur++) << 8;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
201 new_offset |= *(cur++) << 16;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
202 new_offset |= *(cur++) << 24;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
203 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
204 seek_block = blocks;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
205 seek_offset = 0;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
206 block_offset = 0;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
207 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
208 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
209 {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
210 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
211 seek_block = seek_block->next;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
212 block_offset = 0;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
213 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
214 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
215 seek_offset = new_offset;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
216 break;
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
217 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
218
408
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
219 default:
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
220 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
221 uint32_t wait_time = (cmd & 0xF) + 1;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
222 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
223 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
224 } 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
225 if (seek_block) {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
226 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
227 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
228 seek_offset++;
6800d30437c9 Increment sample pointer after reading a sample in VGM player
Michael Pavone <pavone@retrodev.com>
parents: 511
diff changeset
229 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
230 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
231 block_offset = 0;
6800d30437c9 Increment sample pointer after reading a sample in VGM player
Michael Pavone <pavone@retrodev.com>
parents: 511
diff changeset
232 }
511
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
233 } else {
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
234 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
235 }
2c1679058727 Add support for VGM 1.50 PCM data blocks
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
236 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
237 if (wait_time)
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 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
240 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
241 }
408
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
242 } 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
243 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
244 }
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
245 }
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
246 }
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
247 return 0;
a13a83934ba3 Add primitive vgm player for testing
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
248 }