Add a test_sdl plugin

This plugin plays a rough sine wave and is mostly useful for debugging
crashes associated with SDL. Probably not worth merging.

Change-Id: I58ea675f6f996c15bff11fd35445456e41f9fd60

5 files changed, 116 insertions, 4 deletions

diff --git a/apps/plugins/CATEGORIES b/apps/plugins/CATEGORIES
index 652a0b3..0e3a44e 100644
--- a/apps/plugins/CATEGORIES
+++ b/apps/plugins/CATEGORIES
@@ -166,6 +166,7 @@ test_gfx,apps
 test_resize,apps
 test_sampr,apps
 test_scanrate,apps
+test_sdl,apps
 test_touchscreen,apps
 test_viewports,apps
 test_greylib_bitmap_scale,viewers
diff --git a/apps/plugins/SOURCES b/apps/plugins/SOURCES
index 3a622fe..f0b1008 100644
--- a/apps/plugins/SOURCES
+++ b/apps/plugins/SOURCES
@@ -78,6 +78,7 @@ iriverify.c
     (!defined(LCD_STRIDEFORMAT) || (LCD_STRIDEFORMAT != VERTICAL_STRIDE))
 #if (PLUGIN_BUFFER_SIZE > 0x14000)
 duke3d.c
+test_sdl.c
 #endif
 #endif
 
diff --git a/apps/plugins/sdl/SOURCES.test_sdl b/apps/plugins/sdl/SOURCES.test_sdl
new file mode 100644
index 0000000..74cd5b1
--- /dev/null
+++ b/apps/plugins/sdl/SOURCES.test_sdl
@@ -0,0 +1 @@
+progs/helloworld.c
diff --git a/apps/plugins/sdl/progs/helloworld.c b/apps/plugins/sdl/progs/helloworld.c
new file mode 100644
index 0000000..c98529d
--- /dev/null
+++ b/apps/plugins/sdl/progs/helloworld.c
@@ -0,0 +1,84 @@
+#include "SDL.h"
+
+#ifdef ROCKBOX
+#ifndef COMBINED_SDL
+#define main my_main
+#else
+#define main testsound_main
+#endif
+#else
+#include <math.h>
+#endif
+
+double phase = 0;
+
+void fill_audio(void *udata, Uint8 *stream, int len)
+{
+    for(int i = 0; i < len; ++i)
+    {
+        *stream++ = 127 * sin(phase);
+        phase += M_PI / 100;
+        if(phase > 2 * M_PI)
+            phase -= 2 * M_PI;
+    }
+}
+
+int main(int argc, char *argv[])
+{
+        SDL_Surface *screen;
+        SDL_bool quit = SDL_FALSE, first_time = SDL_TRUE;
+        SDL_Cursor *cursor[3];
+        int current;
+
+        /* Load the SDL library */
+        if ( SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0 ) {
+                fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
+                return(1);
+        }
+
+        screen = SDL_SetVideoMode(LCD_WIDTH,LCD_HEIGHT,24,SDL_ANYFORMAT);
+        if (screen==NULL) {
+                fprintf(stderr, "Couldn't initialize video mode: %s\n",SDL_GetError());
+                return(1);
+        }
+
+        SDL_FillRect(screen, NULL, 0xff00ff);
+
+        SDL_AudioSpec wanted;
+
+        /* Set the audio format */
+        wanted.freq = 44100;
+        wanted.format = AUDIO_S8;
+        wanted.channels = 2;    /* 1 = mono, 2 = stereo */
+        wanted.samples = 1024;  /* Good low-latency value for callback */
+        wanted.callback = fill_audio;
+        wanted.userdata = NULL;
+
+
+        /* Open the audio device, forcing the desired format */
+        if ( SDL_OpenAudio(&wanted, NULL) < 0 ) {
+            fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
+            return(-1);
+        }
+
+        SDL_PauseAudio(0);
+
+        while (!quit) {
+                SDL_Event       event;
+                while (SDL_PollEvent(&event)) {
+                        switch(event.type) {
+                        case SDL_MOUSEBUTTONDOWN:
+                        case SDL_KEYDOWN:
+                        case SDL_QUIT:
+                            quit = SDL_TRUE;
+                            break;
+                        }
+                }
+                SDL_Flip(screen);
+                SDL_Delay(10);
+        }
+        SDL_CloseAudio();
+
+        SDL_Quit();
+        return(0);
+}
diff --git a/apps/plugins/sdl/sdl.make b/apps/plugins/sdl/sdl.make
index 9834638..50164dd 100644
--- a/apps/plugins/sdl/sdl.make
+++ b/apps/plugins/sdl/sdl.make
@@ -12,18 +12,20 @@ SDL_OBJDIR := $(BUILDDIR)/apps/plugins/sdl
 
 SDL_SRC := $(call preprocess, $(SDL_SRCDIR)/SOURCES)
 DUKE3D_SRC := $(call preprocess, $(SDL_SRCDIR)/SOURCES.duke)
+TESTSDL_SRC := $(call preprocess, $(SDL_SRCDIR)/SOURCES.test_sdl)
 
 SDL_OBJ := $(call c2obj, $(SDL_SRC))
 DUKE3D_OBJ = $(call c2obj, $(DUKE3D_SRC))
+TESTSDL_OBJ = $(call c2obj, $(TESTSDL_SRC))
 
 # add source files to OTHER_SRC to get automatic dependencies
-OTHER_SRC += $(SDL_SRC) $(DUKE3D_SRC)
+OTHER_SRC += $(SDL_SRC) $(DUKE3D_SRC) $(TESTSDL_SRC)
 OTHER_INC += -I$(SDL_SRCDIR)/include
 
 # include comes first because of possible system SDL headers taking
 # precedence
 SDLFLAGS = -I$(SDL_SRCDIR)/include $(filter-out -O%,$(PLUGINFLAGS))	\
--O3 -Wno-unused-parameter -Xpreprocessor -Wno-undef -Wcast-align -w
+-O3 -Wno-unused-parameter -Xpreprocessor -Wno-undef -Wcast-align -w -save-temps
 
 ifeq ($(ARCH_VERSION),6)
     SDLFLAGS += -mfloat-abi=softfp
@@ -32,11 +34,15 @@ endif
 ifndef APP_TYPE
     ### no target has a big enough plugin buffer
     ROCKS += $(SDL_OBJDIR)/duke3d.ovl
+    ROCKS += $(SDL_OBJDIR)/test_sdl.ovl
     DUKE3D_OUTLDS = $(SDL_OBJDIR)/duke3d.link
-    SDL_OVLFLAGS = -T$(DUKE3D_OUTLDS) -Wl,--gc-sections -Wl,-Map,$(basename $@).map
+    TESTSDL_OUTLDS = $(SDL_OBJDIR)/test_sdl.link
+    DUKE3D_OVLFLAGS = -T$(DUKE3D_OUTLDS) -Wl,--gc-sections -Wl,-Map,$(basename $@).map
+    TESTSDL_OVLFLAGS = -T$(TESTSDL_OUTLDS) -Wl,--gc-sections -Wl,-Map,$(basename $@).map
 else
     ### simulator
     ROCKS += $(SDL_OBJDIR)/duke3d.rock
+    ROCKS += $(SDL_OBJDIR)/test_sdl.rock
 endif
 
 $(SDL_OBJDIR)/duke3d.rock: $(SDL_OBJ) $(DUKE3D_OBJ) $(TLSFLIB)
@@ -51,9 +57,28 @@ $(SDL_OBJDIR)/duke3d.ovl: $(SDL_OBJ) $(DUKE3D_OBJ) $(TLSFLIB) $(DUKE3D_OUTLDS)
 	$(SILENT)$(CC) $(PLUGINFLAGS) -o $(basename $@).elf \
 		$(filter %.o, $^) \
 		$(filter %.a, $+) \
-		-lgcc $(SDL_OVLFLAGS)
+		-lgcc $(DUKE3D_OVLFLAGS)
 	$(call PRINTS,LD $(@F))$(call objcopy,$(basename $@).elf,$@)
 
+###
+
+$(SDL_OBJDIR)/test_sdl.rock: $(SDL_OBJ) $(TESTSDL_OBJ) $(TLSFLIB)
+
+$(SDL_OBJDIR)/test_sdl.refmap: $(SDL_OBJ) $(TESTSDL_OBJ) $(TLSFLIB)
+
+$(TESTSDL_OUTLDS): $(PLUGIN_LDS) $(SDL_OBJDIR)/test_sdl.refmap
+	$(call PRINTS,PP $(@F))$(call preprocess2file,$<,$@,-DOVERLAY_OFFSET=$(shell \
+		$(TOOLSDIR)/ovl_offset.pl $(SDL_OBJDIR)/test_sdl.refmap))
+
+$(SDL_OBJDIR)/test_sdl.ovl: $(SDL_OBJ) $(TESTSDL_OBJ) $(TLSFLIB) $(TESTSDL_OUTLDS)
+	$(SILENT)$(CC) $(PLUGINFLAGS) -o $(basename $@).elf \
+		$(filter %.o, $^) \
+		$(filter %.a, $+) \
+		-lgcc $(TESTSDL_OVLFLAGS)
+	$(call PRINTS,LD $(@F))$(call objcopy,$(basename $@).elf,$@)
+
+###
+
 $(SDL_OBJDIR)/%.o: $(SDL_SRCDIR)/%.c $(SDL_SRCDIR)/sdl.make $(BUILDDIR)/sysfont.h
 	$(SILENT)mkdir -p $(dir $@)
 	$(call PRINTS,CC $(subst $(ROOTDIR)/,,$<))$(CC) -I$(dir $<) $(SDLFLAGS) -c $< -o $@