support multiple sound drivers

Makefile

@@ -27,7 +27,7 @@ CFLAGS += -Iplatform/linux/
 LDLIBS += -lm -lpng
 
 # tmp
-CFLAGS += `sdl-config --cflags`
+CFLAGS += `sdl-config --cflags` -DHAVE_SDL
 LDLIBS += `sdl-config --libs`
 
 all: PicoDrive
@@ -45,7 +45,8 @@ OBJS += platform/common/main.o platform/common/emu.o platform/common/menu_pico.o
 OBJS += platform/libpicofe/input.o platform/libpicofe/readpng.o \
 	platform/libpicofe/fonts.o platform/libpicofe/linux/in_evdev.o \
 	platform/libpicofe/linux/plat.o platform/libpicofe/linux/sndout_oss.o \
-	platform/libpicofe/plat_sdl.o platform/libpicofe/in_sdl.o
+	platform/libpicofe/plat_sdl.o platform/libpicofe/in_sdl.o \
+	platform/libpicofe/sndout.o platform/libpicofe/sndout_sdl.o
 
 OBJS += platform/libpicofe/plat_dummy.o
 

platform/common/emu.c

@@ -16,6 +16,7 @@
 #include "../libpicofe/posix.h"
 #include "../libpicofe/input.h"
 #include "../libpicofe/fonts.h"
+#include "../libpicofe/sndout.h"
 #include "../libpicofe/lprintf.h"
 #include "../libpicofe/plat.h"
 #include "emu.h"
@@ -45,6 +46,8 @@ int pico_pen_x = 320/2, pico_pen_y = 240/2;
 int pico_inp_mode = 0;
 int engineState = PGS_Menu;
 
+static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
+
 /* tmp buff to reduce stack usage for plats with small stack */
 static char static_buff[512];
 const char *rom_fname_reload;
@@ -1418,6 +1421,8 @@ void emu_init(void)
 	PicoMessage = plat_status_msg_busy_next;
 	PicoMCDopenTray = emu_tray_open;
 	PicoMCDcloseTray = emu_tray_close;
+
+	sndout_init();
 }
 
 void emu_finish(void)
@@ -1440,6 +1445,42 @@ void emu_finish(void)
 	pprof_finish();
 
 	PicoExit();
+	sndout_exit();
+}
+
+static void snd_write_nonblocking(int len)
+{
+	sndout_write_nb(PsndOut, len);
+}
+
+void emu_sound_start(void)
+{
+	PsndOut = NULL;
+
+	if (currentConfig.EmuOpt & EOPT_EN_SOUND)
+	{
+		int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;
+
+		PsndRerate(Pico.m.frame_count ? 1 : 0);
+
+		printf("starting audio: %i len: %i stereo: %i, pal: %i\n",
+			PsndRate, PsndLen, is_stereo, Pico.m.pal);
+		sndout_start(PsndRate, is_stereo);
+		PicoWriteSound = snd_write_nonblocking;
+		plat_update_volume(0, 0);
+		memset(sndBuffer, 0, sizeof(sndBuffer));
+		PsndOut = sndBuffer;
+	}
+}
+
+void emu_sound_stop(void)
+{
+	sndout_stop();
+}
+
+void emu_sound_wait(void)
+{
+	sndout_wait();
 }
 
 static void skip_frame(int do_audio)
@@ -1477,6 +1518,7 @@ void emu_loop(void)
 
 	plat_video_loop_prepare();
 	pemu_loop_prep();
+	pemu_sound_start();
 
 	/* number of ticks per frame */
 	if (Pico.m.pal) {
@@ -1641,6 +1683,7 @@ void emu_loop(void)
 	}
 
 	pemu_loop_end();
+	emu_sound_stop();
 
 	// pemu_loop_end() might want to do 1 frame for bg image,
 	// so free CD buffer here

platform/common/emu.h

@@ -149,6 +149,11 @@ void  emu_get_game_name(char *str150);
 void  emu_set_fastforward(int set_on);
 void  emu_status_msg(const char *format, ...);
 
+/* default sound code */
+void  emu_sound_start(void);
+void  emu_sound_stop(void);
+void  emu_sound_wait(void);
+
 /* used by some (but not all) platforms */
 void  emu_cmn_forced_frame(int no_scale, int do_emu);
 
@@ -164,8 +169,6 @@ void pemu_forced_frame(int no_scale, int do_emu); // ..to g_menubg_src_ptr
 void pemu_finalize_frame(const char *fps, const char *notice_msg);
 
 void pemu_sound_start(void);
-void pemu_sound_stop(void);
-void pemu_sound_wait(void);
 
 void plat_early_init(void);
 void plat_init(void);

platform/common/menu_pico.c

@@ -726,10 +726,10 @@ static void mplayer_loop(void)
 		PDebugZ80Frame();
 		if (in_menu_wait_any(NULL, 0) & PBTN_MA3)
 			break;
-		pemu_sound_wait();
+		emu_sound_wait();
 	}
 
-	pemu_sound_stop();
+	emu_sound_stop();
 }
 
 static void draw_text_debug(const char *str, int skip, int from)

platform/gp2x/plat.c

@@ -198,9 +198,6 @@ void plat_init(void)
 	// use buffer2 for menubg to save mem (using only buffers 0, 1 in menu)
 	g_menubg_ptr = gp2x_screens[2];
 
-	// snd
-	sndout_oss_init();
-
 	if (gp2x_dev_id == GP2X_DEV_CAANOO)
 		in_set_config(in_name_to_id("evdev:pollux-analog"), IN_CFG_KEY_NAMES,
 				caanoo_keys, sizeof(caanoo_keys));
@@ -227,7 +224,5 @@ void plat_finish(void)
 		dummy_finish();
 		break;
 	}
-
-	sndout_oss_exit();
 }
 

platform/libpicofe

@@ -1 +1 @@
-Subproject commit 20b143089cc395dbcd51cac516a9e36f4ab6f5ac
+Subproject commit 26d3ca0d29e87a14943d29fcafc93da753df60cd

platform/linux/emu.c

@@ -11,7 +11,6 @@
 
 #include "../libpicofe/menu.h"
 #include "../libpicofe/plat.h"
-#include "../libpicofe/linux/sndout_oss.h"
 #include "../common/emu.h"
 #include "../common/arm_utils.h"
 #include "version.h"
@@ -19,7 +18,6 @@
 #include <pico/pico_int.h>
 
 
-static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
 const char *renderer_names[] = { "16bit accurate", " 8bit accurate", " 8bit fast", NULL };
 const char *renderer_names32x[] = { "accurate", "faster", "fastest", NULL };
 enum renderer_types { RT_16BIT, RT_8BIT_ACC, RT_8BIT_FAST, RT_COUNT };
@@ -209,43 +207,9 @@ void pemu_forced_frame(int no_scale, int do_emu)
 	g_menubg_src_ptr = g_screen_ptr;
 }
 
-static void oss_write_nonblocking(int len)
-{
-	// sndout_oss_can_write() is not reliable, only use with no_frmlimit
-	if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
-		return;
-
-	sndout_oss_write_nb(PsndOut, len);
-}
-
 void pemu_sound_start(void)
 {
-	PsndOut = NULL;
+	emu_sound_start();
-
-	if (currentConfig.EmuOpt & EOPT_EN_SOUND)
-	{
-		int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;
-
-		PsndRerate(Pico.m.frame_count ? 1 : 0);
-
-		printf("starting audio: %i len: %i stereo: %i, pal: %i\n",
-			PsndRate, PsndLen, is_stereo, Pico.m.pal);
-		sndout_oss_start(PsndRate, is_stereo, 1);
-		sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
-		PicoWriteSound = oss_write_nonblocking;
-		plat_update_volume(0, 0);
-		memset(sndBuffer, 0, sizeof(sndBuffer));
-		PsndOut = sndBuffer;
-	}
-}
-
-void pemu_sound_stop(void)
-{
-}
-
-void pemu_sound_wait(void)
-{
-	// don't need to do anything, writes will block by themselves
 }
 
 void plat_debug_cat(char *str)
@@ -262,14 +226,10 @@ void pemu_loop_prep(void)
 {
 	apply_renderer();
 	osd_text = osd_text16;
-
-	pemu_sound_start();
 }
 
 void pemu_loop_end(void)
 {
-	pemu_sound_stop();
-
 	/* do one more frame for menu bg */
 	pemu_forced_frame(0, 1);
 }

platform/linux/io.c

@@ -11,7 +11,6 @@
 
 #include "../libpicofe/menu.h"
 #include "../libpicofe/input.h"
-#include "../libpicofe/linux/sndout_oss.h"
 #include "../common/emu.h"
 #include "../common/input_pico.h"
 #include "version.h"
@@ -342,9 +341,6 @@ void plat_init(void)
 	memset(g_screen_ptr, 0, g_screen_width * g_screen_height * 2);
 	xlib_init();
 #endif
-
-	// snd
-	sndout_oss_init();
 }
 
 void plat_finish(void)
@@ -354,7 +350,6 @@ void plat_finish(void)
 #else
 	free(g_screen_ptr);
 #endif
-	sndout_oss_exit();
 }
 
 /* misc */