basisu: add bindings for basis-universal (supercompressed textures) (#477)

basisu/src/transcoder/binding.zig

@@ -0,0 +1,38 @@
+pub const BasisFile = opaque {};
+
+pub extern fn basisu_transcoder_init() void;
+
+pub extern fn transcoder_is_format_supported(tex_type: u32, fmt: u32) bool;
+
+pub extern fn transcoder_init([*]const u8, u32) *BasisFile;
+pub extern fn transcoder_deinit(*BasisFile) void;
+pub extern fn transcoder_get_images_count(*BasisFile) u32;
+pub extern fn transcoder_get_levels_count(*BasisFile, image_index: u32) u32;
+pub extern fn transcoder_get_image_level_desc(
+    *BasisFile,
+    image_index: u32,
+    level_index: u32,
+    orig_width: *u32,
+    orig_height: *u32,
+    total_block: *u32,
+) bool;
+pub extern fn transcoder_get_image_transcoded_size(
+    *BasisFile,
+    image_index: u32,
+    level_index: u32,
+    format: u32,
+    size: *u32,
+) bool;
+pub extern fn transcoder_start_transcoding(*BasisFile) bool;
+pub extern fn transcoder_stop_transcoding(*BasisFile) bool;
+pub extern fn transcoder_transcode(
+    *BasisFile,
+    out: [*]const u8,
+    out_size: u32,
+    image_index: u32,
+    level_index: u32,
+    format: u32,
+    decode_flags: u32,
+    output_row_pitch_in_blocks_or_pixels: u32,
+    output_rows_in_pixels: u32,
+) bool;