Add 'vendor/hare-sdl2/' from commit 'fb6008be0b79a2a24b1ac960316a83f7873b4f39'

git-subtree-dir: vendor/hare-sdl2
git-subtree-mainline: ed088aa81ac23fa48d5ae48ee739c97e0fcb4490
git-subtree-split: fb6008be0b79a2a24b1ac960316a83f7873b4f39

1 files changed, 38 insertions, 0 deletions

diff --git a/vendor/hare-sdl2/sdl2/mixer/samples.ha b/vendor/hare-sdl2/sdl2/mixer/samples.ha
new file mode 100644
index 0000000..ad1ecc1
--- /dev/null
+++ b/vendor/hare-sdl2/sdl2/mixer/samples.ha
@@ -0,0 +1,38 @@
+use fs;
+use io;
+use os;
+use sdl2;
+
+// The internal format for an audio Mix_Chunk
+export type Mix_Chunk = struct {
+	allocated: int,
+	abuf: *u8,
+	alen: u32,
+	volume: u8,
+};
+
+@symbol("Mix_LoadWAV_RW") fn _Mix_LoadWAV_RW(src: *sdl2::SDL_RWops, freesrc: int) nullable *Mix_Chunk;
+
+// Loads a sample from an [[io::handle]].
+export fn Mix_LoadWAV_RW(src: io::handle) (*Mix_Chunk | sdl2::error) = {
+	const rw = sdl2::rw_from_handle(src);
+	return sdl2::wrapptr(_Mix_LoadWAV_RW(rw, 0))?: *Mix_Chunk;
+};
+
+// Loads a sample from a file path.
+export fn load_file(src: str) (*Mix_Chunk | fs::error | sdl2::error) = {
+	const file = os::open(src)?;
+	defer io::close(file)!;
+	return Mix_LoadWAV_RW(file);
+};
+
+// Free the memory used in Mix_Chunk, and free Mix_Chunk itself as well. Do not use
+// Mix_Chunk after this without loading a new sample to it. Note: It's a bad idea to
+// free a Mix_Chunk that is still being played...
+export @symbol("Mix_FreeChunk") fn Mix_FreeChunk(Mix_Chunk: *Mix_Chunk) void;
+
+// Maximum volume for a Mix_Chunk.
+export def MIX_MAX_VOLUME: int = 128; // XXX: SDL_mixer derives this from SDL_MIX_MAXVOLUME
+
+// Sets the Mix_Chunk volume as specified, returning the previous value.
+export @symbol("Mix_VolumeChunk") fn Mix_VolumeChunk(Mix_Chunk: *Mix_Chunk, volume: int) int;