mirror of
https://github.com/switchbrew/switch-examples.git
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Audio example
This commit is contained in:
hexkyz
parent
3d9851145a
commit
f045830070
184
audio/playtone/Makefile
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184
audio/playtone/Makefile
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@ -0,0 +1,184 @@
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#---------------------------------------------------------------------------------
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.SUFFIXES:
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(DEVKITPRO)),)
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$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
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endif
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TOPDIR ?= $(CURDIR)
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include $(DEVKITPRO)/libnx/switch_rules
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#---------------------------------------------------------------------------------
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# TARGET is the name of the output
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# BUILD is the directory where object files & intermediate files will be placed
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# SOURCES is a list of directories containing source code
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# DATA is a list of directories containing data files
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# INCLUDES is a list of directories containing header files
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# EXEFS_SRC is the optional input directory containing data copied into exefs, if anything this normally should only contain "main.npdm".
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#
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# NO_ICON: if set to anything, do not use icon.
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# NO_NACP: if set to anything, no .nacp file is generated.
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# APP_TITLE is the name of the app stored in the .nacp file (Optional)
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# APP_AUTHOR is the author of the app stored in the .nacp file (Optional)
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# APP_VERSION is the version of the app stored in the .nacp file (Optional)
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# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional)
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# ICON is the filename of the icon (.jpg), relative to the project folder.
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# If not set, it attempts to use one of the following (in this order):
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# - <Project name>.jpg
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# - icon.jpg
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# - <libnx folder>/default_icon.jpg
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#---------------------------------------------------------------------------------
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TARGET := $(notdir $(CURDIR))
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BUILD := build
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SOURCES := source
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DATA := data
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INCLUDES := include
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EXEFS_SRC := exefs_src
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#---------------------------------------------------------------------------------
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# options for code generation
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#---------------------------------------------------------------------------------
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ARCH := -march=armv8-a -mtp=soft -fPIE
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CFLAGS := -g -Wall -O2 \
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-ffast-math \
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$(ARCH) $(DEFINES)
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CFLAGS += $(INCLUDE) -DSWITCH
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CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
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ASFLAGS := -g $(ARCH)
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LDFLAGS = -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
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LIBS := -lnx -lm
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#---------------------------------------------------------------------------------
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# list of directories containing libraries, this must be the top level containing
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# include and lib
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#---------------------------------------------------------------------------------
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LIBDIRS := $(PORTLIBS) $(LIBNX)
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#---------------------------------------------------------------------------------
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# no real need to edit anything past this point unless you need to add additional
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# rules for different file extensions
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#---------------------------------------------------------------------------------
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ifneq ($(BUILD),$(notdir $(CURDIR)))
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#---------------------------------------------------------------------------------
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export OUTPUT := $(CURDIR)/$(TARGET)
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export TOPDIR := $(CURDIR)
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export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
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$(foreach dir,$(DATA),$(CURDIR)/$(dir))
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export DEPSDIR := $(CURDIR)/$(BUILD)
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CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
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CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
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SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
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BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
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#---------------------------------------------------------------------------------
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# use CXX for linking C++ projects, CC for standard C
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(CPPFILES)),)
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#---------------------------------------------------------------------------------
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export LD := $(CC)
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#---------------------------------------------------------------------------------
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else
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#---------------------------------------------------------------------------------
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export LD := $(CXX)
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#---------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------
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export OFILES := $(addsuffix .o,$(BINFILES)) \
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$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
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export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
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$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
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-I$(CURDIR)/$(BUILD)
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export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
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export BUILD_EXEFS_SRC := $(TOPDIR)/$(EXEFS_SRC)
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ifeq ($(strip $(ICON)),)
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icons := $(wildcard *.jpg)
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ifneq (,$(findstring $(TARGET).jpg,$(icons)))
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export APP_ICON := $(TOPDIR)/$(TARGET).jpg
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else
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ifneq (,$(findstring icon.jpg,$(icons)))
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export APP_ICON := $(TOPDIR)/icon.jpg
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endif
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endif
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else
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export APP_ICON := $(TOPDIR)/$(ICON)
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endif
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ifeq ($(strip $(NO_ICON)),)
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export NROFLAGS += --icon=$(APP_ICON)
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endif
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ifeq ($(strip $(NO_NACP)),)
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export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp
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endif
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ifneq ($(APP_TITLEID),)
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export NACPFLAGS += --titleid=$(APP_TITLEID)
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endif
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.PHONY: $(BUILD) clean all
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#---------------------------------------------------------------------------------
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all: $(BUILD)
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$(BUILD):
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@[ -d $@ ] || mkdir -p $@
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@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
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#---------------------------------------------------------------------------------
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clean:
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@echo clean ...
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@rm -fr $(BUILD) $(TARGET).pfs0 $(TARGET).nso $(TARGET).nro $(TARGET).nacp $(TARGET).elf
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#---------------------------------------------------------------------------------
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else
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.PHONY: all
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DEPENDS := $(OFILES:.o=.d)
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#---------------------------------------------------------------------------------
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# main targets
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#---------------------------------------------------------------------------------
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all : $(OUTPUT).pfs0 $(OUTPUT).nro
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$(OUTPUT).pfs0 : $(OUTPUT).nso
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$(OUTPUT).nso : $(OUTPUT).elf
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ifeq ($(strip $(NO_NACP)),)
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$(OUTPUT).nro : $(OUTPUT).elf $(OUTPUT).nacp
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else
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$(OUTPUT).nro : $(OUTPUT).elf
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endif
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$(OUTPUT).elf : $(OFILES)
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#---------------------------------------------------------------------------------
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# you need a rule like this for each extension you use as binary data
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#---------------------------------------------------------------------------------
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%.bin.o : %.bin
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@$(bin2o)
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-include $(DEPENDS)
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#---------------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------------
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192
audio/playtone/source/main.c
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192
audio/playtone/source/main.c
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include <switch.h>
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#define SAMPLERATE 48000
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#define SAMPLESPERBUF (SAMPLERATE / 10)
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void fill_audio_buffer(void* audio_buffer, size_t offset, size_t size, int frequency) {
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u32* dest = (u32*) audio_buffer;
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for (int i = 0; i < size; i++) {
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// This is a simple sine wave, with a frequency of `frequency` Hz, and an amplitude 30% of maximum.
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s16 sample = 0.3 * 0x7FFF * sin(frequency * (2 * M_PI) * (offset + i) / SAMPLERATE);
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// Stereo samples are interleaved: left and right channels.
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dest[i] = (sample << 16) | (sample & 0xffff);
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}
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}
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int main(int argc, char **argv)
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{
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Result rc = 0;
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Handle event = 0;
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AudioOutBuffer source_buffer;
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AudioOutBuffer released_buffer;
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int notefreq[] = {
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220,
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440, 880, 1760, 3520, 7040,
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14080,
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7040, 3520, 1760, 880, 440
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};
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u32 raw_data[SAMPLESPERBUF * 2];
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[4]);
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gfxInitDefault();
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// Initialize console. Using NULL as the second argument tells the console library to use the internal console structure as current one.
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consoleInit(NULL);
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rc = audoutInitialize();
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printf("audoutInitialize() returned 0x%x\n", rc);
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if (R_SUCCEEDED(rc))
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{
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rc = audoutRegisterBufferEvent(&event);
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printf("audoutRegisterBufferEvent() returned 0x%x\n", rc);
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}
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if (R_SUCCEEDED(rc))
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{
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source_buffer.next = 0;
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source_buffer.buffer = raw_data;
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source_buffer.buffer_size = sizeof(raw_data);
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source_buffer.data_size = SAMPLESPERBUF * 2;
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source_buffer.data_offset = 0;
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rc = audoutAppendAudioOutBuffer(&source_buffer);
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printf("audoutAppendAudioOutBuffer() returned 0x%x\n", rc);
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}
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if (R_SUCCEEDED(rc))
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{
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rc = audoutStartAudioOut();
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printf("audoutStartAudioOut() returned 0x%x\n", rc);
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}
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bool play_tone = false;
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printf("Press A, B, Y, X, Left, Up, Right, Down, L, R, ZL or ZR to play a different tone.\n");
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while (appletMainLoop())
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{
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//Scan all the inputs. This should be done once for each frame
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hidScanInput();
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_PLUS) break;
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_A)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[0]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_B)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[1]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_Y)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[2]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_X)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[3]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_DLEFT)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[4]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_DUP)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[5]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_DRIGHT)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[6]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_DDOWN)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[7]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_L)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[8]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_R)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[9]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_ZL)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[10]);
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play_tone = true;
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}
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if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_ZR)
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{
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fill_audio_buffer(raw_data, 0, SAMPLESPERBUF * 2, notefreq[11]);
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play_tone = true;
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}
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if (play_tone)
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{
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u64 time_now = svcGetSystemTick();
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while ((svcGetSystemTick() - time_now) < 1250000)
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{
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s32 index;
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Result do_wait = svcWaitSynchronization(&index, &event, 1, 10000000);
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if (R_SUCCEEDED(do_wait))
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{
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svcResetSignal(event);
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u32 released_count = 0;
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Result do_release = audoutGetReleasedAudioOutBuffer(&released_buffer, &released_count);
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while (R_SUCCEEDED(do_release) && (released_count > 0))
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{
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do_release = audoutGetReleasedAudioOutBuffer(&released_buffer, &released_count);
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audoutAppendAudioOutBuffer(&source_buffer);
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}
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}
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}
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play_tone = false;
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}
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gfxFlushBuffers();
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gfxSwapBuffers();
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gfxWaitForVsync();
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}
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rc = audoutStopAudioOut();
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printf("audoutStopAudioOut() returned 0x%x\n", rc);
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audoutExit();
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gfxExit();
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return 0;
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}
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