original source from gpsp09-2xb_src.tar.bz2

1 files changed, 202 insertions, 0 deletions

diff --git a/main.h b/main.h
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index 0000000..397541d
--- /dev/null
+++ b/main.h
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+/* gameplaySP
+ *
+ * Copyright (C) 2006 Exophase <exophase@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef MAIN_H
+#define MAIN_H
+
+typedef enum
+{
+  TIMER_INACTIVE,
+  TIMER_PRESCALE,
+  TIMER_CASCADE
+} timer_status_type;
+
+typedef enum
+{
+  TIMER_NO_IRQ,
+  TIMER_TRIGGER_IRQ
+} timer_irq_type;
+
+
+typedef enum
+{
+  TIMER_DS_CHANNEL_NONE,
+  TIMER_DS_CHANNEL_A,
+  TIMER_DS_CHANNEL_B,
+  TIMER_DS_CHANNEL_BOTH
+} timer_ds_channel_type;
+
+typedef struct
+{
+  s32 count;
+  u32 reload;
+  u32 prescale;
+  u32 stop_cpu_ticks;
+  fixed16_16 frequency_step;
+  timer_ds_channel_type direct_sound_channels;
+  timer_irq_type irq;
+  timer_status_type status;
+} timer_type;
+
+typedef enum
+{
+  auto_frameskip,
+  manual_frameskip,
+  no_frameskip
+} frameskip_type;
+
+extern u32 cpu_ticks;
+extern u32 frame_ticks;
+extern u32 execute_cycles;
+extern frameskip_type current_frameskip_type;
+extern u32 frameskip_value;
+extern u32 random_skip;
+extern u32 global_cycles_per_instruction;
+extern u32 synchronize_flag;
+extern u32 skip_next_frame;
+
+extern timer_type timer[4];
+static u32 prescale_table[] = { 0, 6, 8, 10 };
+
+extern u32 cycle_memory_access;
+extern u32 cycle_pc_relative_access;
+extern u32 cycle_sp_relative_access;
+extern u32 cycle_block_memory_access;
+extern u32 cycle_block_memory_sp_access;
+extern u32 cycle_block_memory_words;
+extern u32 cycle_dma16_words;
+extern u32 cycle_dma32_words;
+extern u32 flush_ram_count;
+
+extern u64 base_timestamp;
+
+extern u8 main_path[512];
+
+extern u32 update_backup_flag;
+extern u32 clock_speed;
+
+u32 update_gba();
+void reset_gba();
+void synchronize();
+void quit();
+void delay_us(u32 us_count);
+void get_ticks_us(u64 *tick_return);
+void game_name_ext(u8 *src, u8 *buffer, u8 *extension);
+void main_write_mem_savestate(file_tag_type savestate_file);
+void main_read_savestate(file_tag_type savestate_file);
+
+
+#ifdef PSP_BUILD
+
+u32 file_length(u8 *filename, s32 dummy);
+
+extern u32 real_frame_count;
+extern u32 virtual_frame_count;
+extern u32 max_frameskip;
+extern u32 num_skipped_frames;
+
+#endif
+
+
+#ifdef GP2X_BUILD
+
+extern u64 frame_count_initial_timestamp;
+extern u32 real_frame_count;
+extern u32 virtual_frame_count;
+extern u32 max_frameskip;
+extern u32 num_skipped_frames;
+
+#endif
+
+
+#ifdef PC_BUILD
+
+u32 file_length(u8 *dummy, FILE *fp);
+
+#endif
+
+#define count_timer(timer_number)                                             \
+  timer[timer_number].reload = 0x10000 - value;                               \
+  if(timer_number < 2)                                                        \
+  {                                                                           \
+    u32 timer_reload =                                                        \
+     timer[timer_number].reload << timer[timer_number].prescale;              \
+    sound_update_frequency_step(timer_number);                                \
+  }                                                                           \
+
+#define adjust_sound_buffer(timer_number, channel)                            \
+  if(timer[timer_number].direct_sound_channels & (0x01 << channel))           \
+  {                                                                           \
+    direct_sound_channel[channel].buffer_index =                              \
+     (direct_sound_channel[channel].buffer_index + buffer_adjust) %           \
+     BUFFER_SIZE;                                                             \
+  }                                                                           \
+
+#define trigger_timer(timer_number)                                           \
+  if(value & 0x80)                                                            \
+  {                                                                           \
+    if(timer[timer_number].status == TIMER_INACTIVE)                          \
+    {                                                                         \
+      u32 prescale = prescale_table[value & 0x03];                            \
+      u32 timer_reload = timer[timer_number].reload;                          \
+                                                                              \
+      if((value >> 2) & 0x01)                                                 \
+        timer[timer_number].status = TIMER_CASCADE;                           \
+      else                                                                    \
+        timer[timer_number].status = TIMER_PRESCALE;                          \
+                                                                              \
+      timer[timer_number].prescale = prescale;                                \
+      timer[timer_number].irq = (value >> 6) & 0x01;                          \
+                                                                              \
+      address16(io_registers, 0x100 + (timer_number * 4)) =                   \
+       -timer_reload;                                                         \
+                                                                              \
+      timer_reload <<= prescale;                                              \
+      timer[timer_number].count = timer_reload;                               \
+                                                                              \
+      if(timer_reload < execute_cycles)                                       \
+        execute_cycles = timer_reload;                                        \
+                                                                              \
+      if(timer_number < 2)                                                    \
+      {                                                                       \
+        u32 buffer_adjust =                                                   \
+         (u32)(((float)(cpu_ticks - timer[timer_number].stop_cpu_ticks) *     \
+         sound_frequency) / 16777216.0) * 2;                                  \
+                                                                              \
+        sound_update_frequency_step(timer_number);                            \
+        adjust_sound_buffer(timer_number, 0);                                 \
+        adjust_sound_buffer(timer_number, 1);                                 \
+      }                                                                       \
+    }                                                                         \
+  }                                                                           \
+  else                                                                        \
+  {                                                                           \
+    if(timer[timer_number].status != TIMER_INACTIVE)                          \
+    {                                                                         \
+      timer[timer_number].status = TIMER_INACTIVE;                            \
+      timer[timer_number].stop_cpu_ticks = cpu_ticks;                         \
+    }                                                                         \
+  }                                                                           \
+  address16(io_registers, 0x102 + (timer_number * 4)) = value;                \
+
+void change_ext(u8 *src, u8 *buffer, u8 *extension);
+
+#endif
+
+