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#include "pipe/p_compiler.h"

#include "util/u_debug.h"

#include "util/u_math.h"

#include "u_format_etc.h"

/* define etc1_parse_block and etc. */

#define UINT8_TYPE uint8_t

#define TAG(x) x

#include "../../../mesa/main/texcompress_etc_tmp.h"

#undef TAG

#undef UINT8_TYPE

void

util_format_etc1_rgb8_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)

{

   etc1_unpack_rgba8888(dst_row, dst_stride, src_row, src_stride, width, height);

}

void

util_format_etc1_rgb8_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)

{

   assert(0);

}

void

util_format_etc1_rgb8_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)

{

   const unsigned bw = 4, bh = 4, bs = 8, comps = 4;

   struct etc1_block block;

   unsigned x, y, i, j;

   for (y = 0; y < height; y += bh) {

      const uint8_t *src = src_row;

      for (x = 0; x < width; x+= bw) {

         etc1_parse_block(&block, src);

         for (j = 0; j < bh; j++) {

            float *dst = dst_row + (y + j) * dst_stride / sizeof(*dst_row) + x * comps;

            uint8_t tmp[3];

            for (i = 0; i < bw; i++) {

               etc1_fetch_texel(&block, i, j, tmp);

               dst[0] = ubyte_to_float(tmp[0]);

               dst[1] = ubyte_to_float(tmp[1]);

               dst[2] = ubyte_to_float(tmp[2]);

               dst[3] = 1.0f;

               dst += comps;

            }

         }

         src += bs;

      }

      src_row += src_stride;

   }

}

void

util_format_etc1_rgb8_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)

{

   assert(0);

}

void

util_format_etc1_rgb8_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j)

{

   const unsigned bw = 4, bh = 4;

   struct etc1_block block;

   uint8_t tmp[3];

   assert(i < bw && j < bh);

   etc1_parse_block(&block, src);

   etc1_fetch_texel(&block, i, j, tmp);

   dst[0] = ubyte_to_float(tmp[0]);

   dst[1] = ubyte_to_float(tmp[1]);

   dst[2] = ubyte_to_float(tmp[2]);

   dst[3] = 1.0f;

}