diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/etc1/image_etc.cpp | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/drivers/etc1/image_etc.cpp b/drivers/etc1/image_etc.cpp new file mode 100644 index 000000000..62a736484 --- /dev/null +++ b/drivers/etc1/image_etc.cpp @@ -0,0 +1,173 @@ +#include "image_etc.h" +#include "image.h" +#include "rg_etc1.h" +#include "print_string.h" +#include "os/copymem.h" +static void _decompress_etc(Image *p_img) { + + ERR_FAIL_COND(p_img->get_format()!=Image::FORMAT_ETC); + + int imgw = p_img->get_width(); + int imgh = p_img->get_height(); + DVector<uint8_t> src=p_img->get_data(); + DVector<uint8_t> dst; + + DVector<uint8_t>::Read r = src.read(); + + int mmc=p_img->get_mipmaps(); + + + for(int i=0;i<=mmc;i++) { + + dst.resize(dst.size()+imgw*imgh*3); + const uint8_t *srcbr=&r[p_img->get_mipmap_offset(i)]; + DVector<uint8_t>::Write w = dst.write(); + + uint8_t *wptr = &w[dst.size()-imgw*imgh*3]; + + int bw=MAX(imgw/4,1); + int bh=MAX(imgh/4,1); + + for(int y=0;y<bh;y++) { + + for(int x=0;x<bw;x++) { + + uint8_t block[4*4*4]; + + + rg_etc1::unpack_etc1_block(srcbr,(unsigned int*)block); + srcbr+=8; + + int maxx=MIN(imgw,4); + int maxy=MIN(imgh,4); + + for(int yy=0;yy<maxy;yy++) { + + for(int xx=0;xx<maxx;xx++) { + + uint32_t src_ofs = (yy*4+xx)*4; + uint32_t dst_ofs = ((y*4+yy)*imgw+x*4+xx)*3; + wptr[dst_ofs+0]=block[src_ofs+0]; + wptr[dst_ofs+1]=block[src_ofs+1]; + wptr[dst_ofs+2]=block[src_ofs+2]; + + } + } + + } + + } + + imgw=MAX(1,imgw/2); + imgh=MAX(1,imgh/2); + } + + + r=DVector<uint8_t>::Read(); + //print_line("Re Creating ETC into regular image: w "+itos(p_img->get_width())+" h "+itos(p_img->get_height())+" mm "+itos(p_img->get_mipmaps())); + *p_img=Image(p_img->get_width(),p_img->get_height(),p_img->get_mipmaps(),Image::FORMAT_RGB,dst); + if (p_img->get_mipmaps()) + p_img->generate_mipmaps(-1,true); + + +} + +static void _compress_etc(Image *p_img) { + + Image img = *p_img; + + int imgw=img.get_width(),imgh=img.get_height(); + + ERR_FAIL_COND( nearest_power_of_2(imgw)!=imgw || nearest_power_of_2(imgh)!=imgh ); + + if (img.get_format()!=Image::FORMAT_RGB) + img.convert(Image::FORMAT_RGB); + + + int mmc=img.get_mipmaps(); + if (mmc==0) + img.generate_mipmaps(); // force mipmaps, so it works on most hardware + + + DVector<uint8_t> res_data; + DVector<uint8_t> dst_data; + DVector<uint8_t>::Read r = img.get_data().read(); + + int mc=0; + + + rg_etc1::etc1_pack_params pp; + pp.m_quality=rg_etc1::cLowQuality; + for(int i=0;i<=mmc;i++) { + + + int bw=MAX(imgw/4,1); + int bh=MAX(imgh/4,1); + const uint8_t *src = &r[img.get_mipmap_offset(i)]; + int mmsize = MAX(bw,1)*MAX(bh,1)*8; + dst_data.resize(dst_data.size()+mmsize); + DVector<uint8_t>::Write w=dst_data.write(); + uint8_t *dst = &w[dst_data.size()-mmsize]; + + +// print_line("bh: "+itos(bh)+" bw: "+itos(bw)); + + for(int y=0;y<bh;y++) { + + for(int x=0;x<bw;x++) { + +// print_line("x: "+itos(x)+" y: "+itos(y)); + + uint8_t block[4*4*4]; + zeromem(block,4*4*4); + uint8_t cblock[8]; + + int maxy = MIN(imgh,4); + int maxx = MIN(imgw,4); + + + for(int yy=0;yy<maxy;yy++) { + + for(int xx=0;xx<maxx;xx++) { + + + uint32_t dst_ofs = (yy*4+xx)*4; + uint32_t src_ofs = ((y*4+yy)*imgw+x*4+xx)*3; + block[dst_ofs+0]=src[src_ofs+0]; + block[dst_ofs+1]=src[src_ofs+1]; + block[dst_ofs+2]=src[src_ofs+2]; + block[dst_ofs+3]=255; + + } + } + + rg_etc1::pack_etc1_block(cblock, (const unsigned int*)block, pp); + for(int j=0;j<8;j++) { + + dst[j]=cblock[j]; + } + + dst+=8; + } + + } + + imgw=MAX(1,imgw/2); + imgh=MAX(1,imgh/2); + mc++; + + } + + *p_img=Image(p_img->get_width(),p_img->get_height(),mc-1,Image::FORMAT_ETC,dst_data); + + +} + +void _register_etc1_compress_func() { + + rg_etc1::pack_etc1_block_init(); + Image::_image_compress_etc_func=_compress_etc; + Image::_image_decompress_etc=_decompress_etc; + + +} |