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Kinda hacky fix to make sure Nuklear has the right GL context
author Michael Pavone <pavone@retrodev.com>
date Wed, 17 Apr 2024 22:18:45 -0700
parents 01ff005b08f6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1986
a042e046f7f2 Fix libretro target
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parents: 1967
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1 #include <stdlib.h>
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2 #include "gen_player.h"
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3 #include "event_log.h"
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4 #include "render.h"
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5
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6 #define MCLKS_NTSC 53693175
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7 #define MCLKS_PAL 53203395
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8 #define MCLKS_PER_YM 7
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9 #define MCLKS_PER_Z80 15
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10 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16)
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11
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12 #ifdef IS_LIB
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13 #define MAX_SOUND_CYCLES (MCLKS_PER_YM*NUM_OPERATORS*6*4)
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14 #else
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15 #define MAX_SOUND_CYCLES 100000
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16 #endif
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17
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18 static void sync_sound(gen_player *gen, uint32_t target)
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19 {
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20 //printf("YM | Cycle: %d, bpos: %d, PSG | Cycle: %d, bpos: %d\n", gen->ym->current_cycle, gen->ym->buffer_pos, gen->psg->cycles, gen->psg->buffer_pos * 2);
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21 while (target > gen->psg->cycles && target - gen->psg->cycles > MAX_SOUND_CYCLES) {
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22 uint32_t cur_target = gen->psg->cycles + MAX_SOUND_CYCLES;
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23 //printf("Running PSG to cycle %d\n", cur_target);
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24 psg_run(gen->psg, cur_target);
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25 //printf("Running YM-2612 to cycle %d\n", cur_target);
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26 ym_run(gen->ym, cur_target);
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27 }
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28 psg_run(gen->psg, target);
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29 ym_run(gen->ym, target);
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30
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31 //printf("Target: %d, YM bufferpos: %d, PSG bufferpos: %d\n", target, gen->ym->buffer_pos, gen->psg->buffer_pos * 2);
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32 }
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33
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34 static void run(gen_player *player)
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35 {
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36 while(player->reader.socket || player->reader.buffer.cur_pos < player->reader.buffer.size)
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37 {
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38 uint32_t cycle;
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39 uint8_t event = reader_next_event(&player->reader, &cycle);
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40 switch (event)
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41 {
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42 case EVENT_FLUSH:
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43 sync_sound(player, cycle);
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44 vdp_run_context(player->vdp, cycle);
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45 break;
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46 case EVENT_ADJUST: {
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47 sync_sound(player, cycle);
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48 vdp_run_context(player->vdp, cycle);
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49 uint32_t deduction = load_int32(&player->reader.buffer);
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50 ym_adjust_cycles(player->ym, deduction);
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51 vdp_adjust_cycles(player->vdp, deduction);
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52 player->psg->cycles -= deduction;
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53 break;
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54 case EVENT_PSG_REG:
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55 sync_sound(player, cycle);
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56 reader_ensure_data(&player->reader, 1);
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57 psg_write(player->psg, load_int8(&player->reader.buffer));
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58 break;
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59 case EVENT_YM_REG: {
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60 sync_sound(player, cycle);
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61 reader_ensure_data(&player->reader, 3);
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62 uint8_t part = load_int8(&player->reader.buffer);
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63 uint8_t reg = load_int8(&player->reader.buffer);
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64 uint8_t value = load_int8(&player->reader.buffer);
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65 if (part) {
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66 ym_address_write_part2(player->ym, reg);
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67 } else {
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68 ym_address_write_part1(player->ym, reg);
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69 }
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70 ym_data_write(player->ym, value);
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71 break;
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72 case EVENT_STATE: {
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73 reader_ensure_data(&player->reader, 3);
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74 uint32_t size = load_int8(&player->reader.buffer) << 16;
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75 size |= load_int16(&player->reader.buffer);
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76 reader_ensure_data(&player->reader, size);
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77 deserialize_buffer buffer;
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78 init_deserialize(&buffer, player->reader.buffer.data + player->reader.buffer.cur_pos, size);
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79 register_section_handler(&buffer, (section_handler){.fun = vdp_deserialize, .data = player->vdp}, SECTION_VDP);
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80 register_section_handler(&buffer, (section_handler){.fun = ym_deserialize, .data = player->ym}, SECTION_YM2612);
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81 register_section_handler(&buffer, (section_handler){.fun = psg_deserialize, .data = player->psg}, SECTION_PSG);
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82 while (buffer.cur_pos < buffer.size)
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83 {
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84 load_section(&buffer);
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85 }
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86 player->reader.buffer.cur_pos += size;
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87 free(buffer.handlers);
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88 break;
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89 }
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90 default:
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91 vdp_run_context(player->vdp, cycle);
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92 vdp_replay_event(player->vdp, event, &player->reader);
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93 }
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94 }
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95
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96 }
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97 if (!player->reader.socket) {
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98 reader_ensure_data(&player->reader, 1);
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99 }
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100 }
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101 }
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102
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103 static int thread_main(void *player)
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104 {
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105 run(player);
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106 return 0;
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107 }
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108
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109 void start_context(system_header *sys, char *statefile)
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110 {
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111 gen_player *player = (gen_player *)sys;
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112 if (player->reader.socket) {
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113 #ifndef IS_LIB
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114 render_create_thread(&player->thread, "player", thread_main, player);
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115 #endif
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116 } else {
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117 run(player);
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118 }
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119 }
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120
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121 static void gamepad_down(system_header *system, uint8_t gamepad_num, uint8_t button)
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122 {
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123 gen_player *player = (gen_player *)system;
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124 reader_send_gamepad_event(&player->reader, gamepad_num, button, 1);
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125 }
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126
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127 static void gamepad_up(system_header *system, uint8_t gamepad_num, uint8_t button)
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128 {
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129 gen_player *player = (gen_player *)system;
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130 reader_send_gamepad_event(&player->reader, gamepad_num, button, 0);
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131 }
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132
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133 static void config_common(gen_player *player)
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134 {
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135 uint8_t vid_std = load_int8(&player->reader.buffer);
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136 uint8_t name_len = load_int8(&player->reader.buffer);
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137 player->header.info.name = calloc(1, name_len + 1);
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parents:
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138 load_buffer8(&player->reader.buffer, player->header.info.name, name_len);
2194
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 1986
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139
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 1986
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140 player->vdp = init_vdp_context(vid_std == VID_PAL, 0, VDP_GENESIS);
1947
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141 render_set_video_standard(vid_std);
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142 uint32_t master_clock = vid_std == VID_NTSC ? MCLKS_NTSC : MCLKS_PAL;
2194
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
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parents: 1986
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143
1947
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144 player->ym = malloc(sizeof(ym2612_context));
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145 ym_init(player->ym, master_clock, MCLKS_PER_YM, 0);
2194
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parents: 1986
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146
1947
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147 player->psg = malloc(sizeof(psg_context));
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148 psg_init(player->psg, master_clock, MCLKS_PER_PSG);
2194
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
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parents: 1986
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149
1947
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150 player->header.start_context = start_context;
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151 player->header.gamepad_down = gamepad_down;
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152 player->header.gamepad_up = gamepad_up;
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153 player->header.type = SYSTEM_GENESIS_PLAYER;
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154 player->header.info.save_type = SAVE_NONE;
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155 }
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156
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157 gen_player *alloc_config_gen_player(void *stream, uint32_t rom_size)
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158 {
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159 uint8_t *data = stream;
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160 gen_player *player = calloc(1, sizeof(gen_player));
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161 init_event_reader(&player->reader, data + 9, rom_size - 9);
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162 config_common(player);
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163 return player;
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164 }
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165
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parents:
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166 gen_player *alloc_config_gen_player_reader(event_reader *reader)
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167 {
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168 gen_player *player = calloc(1, sizeof(gen_player));
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169 player->reader = *reader;
1958
9c01945b5d20 Use zlib to compress event log streams
Mike Pavone <pavone@retrodev.com>
parents: 1957
diff changeset
170 inflateCopy(&player->reader.input_stream, &reader->input_stream);
1967
bd70f1e15684 Make netplay remote sync to network rather than audio or video so it doesn't drift out of sync with the host
Michael Pavone <pavone@retrodev.com>
parents: 1958
diff changeset
171 render_set_external_sync(1);
1947
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parents:
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172 config_common(player);
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173 return player;
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174 }
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parents:
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175