diff --git a/libretro-test/Makefile b/libretro-test/Makefile new file mode 100644 index 0000000000..0e47e796a3 --- /dev/null +++ b/libretro-test/Makefile @@ -0,0 +1,50 @@ + +ifeq ($(platform),) +platform = unix +ifeq ($(shell uname -a),) + platform = win +else ifneq ($(findstring MINGW,$(shell uname -a)),) + platform = win +else ifneq ($(findstring Darwin,$(shell uname -a)),) + platform = osx +else ifneq ($(findstring win,$(shell uname -a)),) + platform = win +endif +endif + +ifeq ($(platform), unix) + TARGET := libretro.so + fpic := -fPIC + SHARED := -shared -Wl,--version-script=link.T -Wl,--no-undefined +else ifeq ($(platform), osx) + TARGET := libretro.dylib + fpic := -fPIC + SHARED := -dynamiclib +else + CC = gcc + TARGET := retro.dll + SHARED := -shared -static-libgcc -static-libstdc++ -s -Wl,--version-script=link.T -Wl,--no-undefined +endif + +ifeq ($(DEBUG), 1) + CFLAGS += -O0 -g +else + CFLAGS += -O3 +endif + +OBJECTS := libretro-test.o +CFLAGS += -std=gnu99 -Wall -pedantic $(fpic) + +all: $(TARGET) + +$(TARGET): $(OBJECTS) + $(CC) $(fpic) $(SHARED) $(INCLUDES) -o $@ $(OBJECTS) -lm + +%.o: %.c + $(CC) $(CFLAGS) -c -o $@ $< + +clean: + rm -f $(OBJECTS) $(TARGET) + +.PHONY: clean + diff --git a/libretro-test/libretro-test.c b/libretro-test/libretro-test.c new file mode 100644 index 0000000000..8d2080e3f3 --- /dev/null +++ b/libretro-test/libretro-test.c @@ -0,0 +1,229 @@ +#include "../libretro.h" +#include +#include +#include +#include + +static uint16_t *frame_buf; + +void retro_init(void) +{ + frame_buf = calloc(320 * 240, sizeof(uint16_t)); +} + +void retro_deinit(void) +{ + free(frame_buf); + frame_buf = NULL; +} + +unsigned retro_api_version(void) +{ + return RETRO_API_VERSION; +} + +void retro_set_controller_port_device(unsigned port, unsigned device) +{ + (void)port; + (void)device; +} + +void retro_get_system_info(struct retro_system_info *info) +{ + memset(info, 0, sizeof(*info)); + info->library_name = "TestCore"; + info->library_version = "v1"; + info->need_fullpath = false; + info->valid_extensions = NULL; // Anything is fine, we don't care. +} + +void retro_get_system_av_info(struct retro_system_av_info *info) +{ + info->timing = (struct retro_system_timing) { + .fps = 60.0, + .sample_rate = 30000.0, + }; + + info->geometry = (struct retro_game_geometry) { + .base_width = 320, + .base_height = 240, + .max_width = 320, + .max_height = 240, + .aspect_ratio = 4.0 / 3.0, + }; +} + +static retro_video_refresh_t video_cb; +static retro_audio_sample_t audio_cb; +static retro_audio_sample_batch_t audio_batch_cb; +static retro_environment_t environ_cb; +static retro_input_poll_t input_poll_cb; +static retro_input_state_t input_state_cb; + +void retro_set_environment(retro_environment_t cb) +{ + environ_cb = cb; +} + +void retro_set_audio_sample(retro_audio_sample_t cb) +{ + audio_cb = cb; +} + +void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) +{ + audio_batch_cb = cb; +} + +void retro_set_input_poll(retro_input_poll_t cb) +{ + input_poll_cb = cb; +} + +void retro_set_input_state(retro_input_state_t cb) +{ + input_state_cb = cb; +} + +void retro_set_video_refresh(retro_video_refresh_t cb) +{ + video_cb = cb; +} + +static unsigned x_coord; +static unsigned y_coord; +static unsigned phase; + +void retro_reset(void) +{ + x_coord = 0; + y_coord = 0; +} + +static void update_input(void) +{ + int dir_x = 0; + int dir_y = 0; + + input_poll_cb(); + if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)) + dir_y--; + if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)) + dir_y++; + if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)) + dir_x--; + if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)) + dir_x++; + + x_coord = (x_coord + dir_x) & 31; + y_coord = (y_coord + dir_y) & 31; +} + +static void render_checkered(void) +{ + uint16_t color_r = 31 << 10; + uint16_t color_g = 31 << 5; + + uint16_t *line = frame_buf; + for (unsigned y = 0; y < 240; y++, line += 320) + { + unsigned index_y = ((y - y_coord) >> 4) & 1; + for (unsigned x = 0; x < 320; x++) + { + unsigned index_x = ((x - x_coord) >> 4) & 1; + line[x] = (index_y ^ index_x) ? color_r : color_g; + } + } + + video_cb(frame_buf, 320, 240, 320 << 1); +} + +static void render_audio(void) +{ + for (unsigned i = 0; i < 30000 / 60; i++, phase++) + { + int16_t val = 0x800 * sinf(2.0f * M_PI * phase * 300.0f / 30000.0f); + audio_cb(val, val); + } + + phase %= 100; +} + +void retro_run(void) +{ + update_input(); + render_checkered(); + render_audio(); +} + +bool retro_load_game(const struct retro_game_info *info) +{ + (void)info; + return true; +} + +void retro_unload_game(void) +{} + +unsigned retro_get_region(void) +{ + return RETRO_REGION_NTSC; +} + +bool retro_load_game_special(unsigned type, const struct retro_game_info *info, size_t num) +{ + (void)type; + (void)info; + (void)num; + return false; +} + +size_t retro_serialize_size(void) +{ + return 2; +} + +bool retro_serialize(void *data_, size_t size) +{ + if (size < 2) + return false; + + uint8_t *data = data_; + data[0] = x_coord; + data[1] = y_coord; + return true; +} + +bool retro_unserialize(const void *data_, size_t size) +{ + if (size < 2) + return false; + + const uint8_t *data = data_; + x_coord = data[0] & 31; + y_coord = data[1] & 31; + return true; +} + +void *retro_get_memory_data(unsigned id) +{ + (void)id; + return NULL; +} + +size_t retro_get_memory_size(unsigned id) +{ + (void)id; + return 0; +} + +void retro_cheat_reset(void) +{} + +void retro_cheat_set(unsigned index, bool enabled, const char *code) +{ + (void)index; + (void)enabled; + (void)code; +} + diff --git a/libretro-test/link.T b/libretro-test/link.T new file mode 100644 index 0000000000..b0c262db9e --- /dev/null +++ b/libretro-test/link.T @@ -0,0 +1,5 @@ +{ + global: retro_*; + local: *; +}; +