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DXTC Native Decoding Support

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This commit is contained in:
Ishotihadus
2018-05-27 02:45:23 +09:00
parent 4b577b0644
commit a7f748bbb5
5 changed files with 139 additions and 112 deletions
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ext/decoders/native/main.c
+25 -2
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@@ -1,8 +1,9 @@
#include <stdlib.h>
#include <stdint.h>
#include <ruby.h>
#include "astc.h"
#include "rgb.h"
#include "astc.h"
#include "dxtc.h"
static VALUE rb_decode_rgb565(VALUE self, VALUE rb_data, VALUE size, VALUE big) {
if (RSTRING_LEN(rb_data) < FIX2LONG(size) * 2)
@@ -25,9 +26,31 @@ static VALUE rb_decode_astc(VALUE self, VALUE rb_data, VALUE w, VALUE h, VALUE b
return ret;
}
static VALUE rb_decode_dxt1(VALUE self, VALUE rb_data, VALUE w, VALUE h) {
if (RSTRING_LEN(rb_data) < ((FIX2LONG(w) + 3) / 4) * ((FIX2LONG(h) + 3) / 4) * 8)
rb_raise(rb_eStandardError, "Data size is not enough.");
uint32_t *image = (uint32_t*)calloc(FIX2LONG(w) * FIX2LONG(h), sizeof(uint32_t));
decode_dxt1((uint64_t*)RSTRING_PTR(rb_data), FIX2INT(w), FIX2INT(h), image);
VALUE ret = rb_str_new((char*)image, FIX2LONG(w) * FIX2LONG(h) * sizeof(uint32_t));
free(image);
return ret;
}
static VALUE rb_decode_dxt5(VALUE self, VALUE rb_data, VALUE w, VALUE h) {
if (RSTRING_LEN(rb_data) < ((FIX2LONG(w) + 3) / 4) * ((FIX2LONG(h) + 3) / 4) * 16)
rb_raise(rb_eStandardError, "Data size is not enough.");
uint32_t *image = (uint32_t*)calloc(FIX2LONG(w) * FIX2LONG(h), sizeof(uint32_t));
decode_dxt5((uint64_t*)RSTRING_PTR(rb_data), FIX2INT(w), FIX2INT(h), image);
VALUE ret = rb_str_new((char*)image, FIX2LONG(w) * FIX2LONG(h) * sizeof(uint32_t));
free(image);
return ret;
}
void Init_native() {
VALUE mMikunyan = rb_define_module("Mikunyan");
VALUE mDecodeHelper = rb_define_module_under(mMikunyan, "DecodeHelper");
rb_define_module_function(mDecodeHelper, "decode_astc", rb_decode_astc, 5);
rb_define_module_function(mDecodeHelper, "decode_rgb565", rb_decode_rgb565, 3);
rb_define_module_function(mDecodeHelper, "decode_astc", rb_decode_astc, 5);
rb_define_module_function(mDecodeHelper, "decode_dxt1", rb_decode_dxt1, 3);
rb_define_module_function(mDecodeHelper, "decode_dxt5", rb_decode_dxt5, 3);
}