debug bgm player, sound code refactoring

[libpicofe.git] / gp2x / emu.c

diff --git a/gp2x/emu.c b/gp2x/emu.c
index 77bd83e..8e726e3 100644 (file)
--- a/gp2x/emu.c
+++ b/gp2x/emu.c
@@ -665,6 +665,46 @@ static void updateSound(int len)
                gp2x_sound_write(PsndOut, len<<1);\r
 }\r
 \r
+void emu_startSound(void)\r
+{\r
+       static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
+       int target_fps = Pico.m.pal ? 50 : 60;\r
+\r
+       PsndOut = NULL;\r
+\r
+       // prepare sound stuff\r
+       if (currentConfig.EmuOpt & 4)\r
+       {\r
+               int snd_excess_add;\r
+               if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
+                               ((PicoOpt&0x200) && crashed_940)) {\r
+                       PsndRerate(Pico.m.frame_count ? 1 : 0);\r
+               }\r
+               snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
+               printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
+                       PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
+               gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
+               gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
+               PicoWriteSound = updateSound;\r
+               update_volume(0, 0);\r
+               memset(sndBuffer, 0, sizeof(sndBuffer));\r
+               PsndOut = sndBuffer;\r
+               PsndRate_old = PsndRate;\r
+               PicoOpt_old  = PicoOpt;\r
+               pal_old = Pico.m.pal;\r
+       }\r
+}\r
+\r
+void emu_endSound(void)\r
+{\r
+}\r
+\r
+/* wait until we can write more sound */\r
+void emu_waitSound(void)\r
+{\r
+       // don't need to do anything, writes will block by themselves\r
+}\r
+\r
 \r
 static void SkipFrame(int do_audio)\r
 {\r
@@ -776,8 +816,7 @@ static void tga_dump(void)
 \r
 void emu_Loop(void)\r
 {\r
-       static int gp2x_old_clock = 200;\r
-       static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, pal_old = 0;\r
+       static int gp2x_old_clock = 200, EmuOpt_old = 0;\r
        char fpsbuff[24]; // fps count c string\r
        struct timeval tval; // timing\r
        int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
@@ -821,29 +860,7 @@ void emu_Loop(void)
        target_frametime = 1000000/target_fps;\r
        reset_timing = 1;\r
 \r
-       // prepare sound stuff\r
-       if (currentConfig.EmuOpt & 4)\r
-       {\r
-               int snd_excess_add;\r
-               if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
-                               ((PicoOpt&0x200) && crashed_940)) {\r
-                       PsndRerate(Pico.m.frame_count ? 1 : 0);\r
-               }\r
-               snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
-               printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
-                       PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
-               gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
-               gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
-               PicoWriteSound = updateSound;\r
-               update_volume(0, 0);\r
-               memset(sndBuffer, 0, sizeof(sndBuffer));\r
-               PsndOut = sndBuffer;\r
-               PsndRate_old = PsndRate;\r
-               PicoOpt_old  = PicoOpt;\r
-               pal_old = Pico.m.pal;\r
-       } else {\r
-               PsndOut = NULL;\r
-       }\r
+       emu_startSound();\r
 \r
        // prepare CD buffer\r
        if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r