#include "hb-shape-input.hh"

#include <hb-gpu.h>

extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size)

{

  alloc_state = _fuzzing_alloc_state (data, size);

  _fuzzing_shape_input_t input;

  if (_fuzzing_prepare_shape_input (data, size, 30, 30, &input) == HB_FUZZING_SHAPE_INPUT_MALFORMED)

    return 0;

  hb_gpu_draw_t *draw = hb_gpu_draw_create_or_fail ();

  if (!draw)

    return 0;

  hb_gpu_paint_t *paint = hb_gpu_paint_create_or_fail ();

  if (!paint)

  {

    hb_gpu_draw_destroy (draw);

    return 0;

  }

  unsigned glyph_count = hb_face_get_glyph_count (input.face);

  unsigned limit = glyph_count > 16 ? 16 : glyph_count;

  volatile unsigned counter = !glyph_count;

  for (unsigned gid = 0; gid < limit; gid++)

  {

    hb_gpu_draw_reset (draw);

    hb_gpu_draw_glyph (draw, input.font, gid);

    hb_glyph_extents_t extents;

    hb_blob_t *blob = hb_gpu_draw_encode (draw, &extents);

    counter += extents.width;

    if (blob)

    {

      unsigned length = 0;

      const char *blob_data = hb_blob_get_data (blob, &length);

      counter += length;

      if (blob_data && length)

  counter += (unsigned char) blob_data[0];

      hb_gpu_draw_recycle_blob (draw, blob);

    }

    hb_gpu_paint_glyph (paint, input.font, gid);

    hb_blob_t *paint_blob = hb_gpu_paint_encode (paint, &extents);

    counter += extents.width;

    if (paint_blob)

    {

      unsigned length = 0;

      const char *blob_data = hb_blob_get_data (paint_blob, &length);

      counter += length;

      if (blob_data && length)

  counter += (unsigned char) blob_data[0];

      hb_gpu_paint_recycle_blob (paint, paint_blob);

    }

  }

  hb_gpu_paint_destroy (paint);

  hb_gpu_draw_destroy (draw);

  return counter ? 0 : 0;

}