Ejemplos de dword_be en C++ (Cpp)

Ejemplo n.º 1

Archivo: rpng_nbio.c Proyecto: Miinky-Games/RetroArch

static bool png_parse_ihdr(uint8_t *buf,
      struct png_ihdr *ihdr)
{
   buf += 4 + 4;

   ihdr->width       = dword_be(buf + 0);
   ihdr->height      = dword_be(buf + 4);
   ihdr->depth       = buf[8];
   ihdr->color_type  = buf[9];
   ihdr->compression = buf[10];
   ihdr->filter      = buf[11];
   ihdr->interlace   = buf[12];

   if (ihdr->width == 0 || ihdr->height == 0)
      return false;

   return true;
}

Ejemplo n.º 2

Archivo: rpng.c Proyecto: Hydro5/RetroArch

static bool read_chunk_header(FILE *file, struct png_chunk *chunk)
{
   uint8_t dword[4] = {0};
   if (fread(dword, 1, 4, file) != 4)
      return false;

   chunk->size = dword_be(dword);

   if (fread(chunk->type, 1, 4, file) != 4)
      return false;

   return true;
}

Ejemplo n.º 3

Archivo: rpng_fbio.c Proyecto: chungy/RetroArch

static bool png_parse_ihdr_fio(FILE **fd,
      struct png_chunk *chunk, struct png_ihdr *ihdr)
{
   if (!png_read_chunk(fd, chunk))
      return false;

   if (chunk->size != 13)
      return false;

   ihdr->width       = dword_be(chunk->data + 0);
   ihdr->height      = dword_be(chunk->data + 4);
   ihdr->depth       = chunk->data[8];
   ihdr->color_type  = chunk->data[9];
   ihdr->compression = chunk->data[10];
   ihdr->filter      = chunk->data[11];
   ihdr->interlace   = chunk->data[12];

   if (ihdr->width == 0 || ihdr->height == 0)
      return false;

   return true;
}

Ejemplo n.º 4

Archivo: rpng.c Proyecto: larskj/RetroArch

static bool read_chunk_header(uint8_t *buf, struct png_chunk *chunk)
{
   unsigned i;
   uint8_t dword[4] = {0};

   for (i = 0; i < 4; i++)
      dword[i] = buf[i];

   chunk->size = dword_be(dword);

   for (i = 0; i < 4; i++)
      chunk->type[i] = buf[i + 4];

   return true;
}

Ejemplo n.º 5

Archivo: rpng.c Proyecto: Hydro5/RetroArch

static bool png_parse_ihdr(FILE *file, struct png_chunk *chunk, struct png_ihdr *ihdr)
{
   unsigned i;
   bool ret = true;
   if (!png_read_chunk(file, chunk))
      return false;

   if (chunk->size != 13)
      GOTO_END_ERROR();

   ihdr->width       = dword_be(chunk->data + 0);
   ihdr->height      = dword_be(chunk->data + 4);
   ihdr->depth       = chunk->data[8];
   ihdr->color_type  = chunk->data[9];
   ihdr->compression = chunk->data[10];
   ihdr->filter      = chunk->data[11];
   ihdr->interlace   = chunk->data[12];

   if (ihdr->width == 0 || ihdr->height == 0)
      GOTO_END_ERROR();

   if (ihdr->color_type == 2 || ihdr->color_type == 4 || ihdr->color_type == 6)
   {
      if (ihdr->depth != 8 && ihdr->depth != 16)
         GOTO_END_ERROR();
   }
   else if (ihdr->color_type == 0)
   {
      static const unsigned valid_bpp[] = { 1, 2, 4, 8, 16 };
      bool correct_bpp = false;
      for (i = 0; i < ARRAY_SIZE(valid_bpp); i++)
      {
         if (valid_bpp[i] == ihdr->depth)
         {
            correct_bpp = true;
            break;
         }
      }

      if (!correct_bpp)
         GOTO_END_ERROR();
   }
   else if (ihdr->color_type == 3)
   {
      static const unsigned valid_bpp[] = { 1, 2, 4, 8 };
      bool correct_bpp = false;
      for (i = 0; i < ARRAY_SIZE(valid_bpp); i++)
      {
         if (valid_bpp[i] == ihdr->depth)
         {
            correct_bpp = true;
            break;
         }
      }

      if (!correct_bpp)
         GOTO_END_ERROR();
   }
   else
      GOTO_END_ERROR();

#ifdef RPNG_TEST
   fprintf(stderr, "IHDR: (%u x %u), bpc = %u, palette = %s, color = %s, alpha = %s, adam7 = %s.\n",
         ihdr->width, ihdr->height,
         ihdr->depth, ihdr->color_type == 3 ? "yes" : "no",
         ihdr->color_type & 2 ? "yes" : "no",
         ihdr->color_type & 4 ? "yes" : "no",
         ihdr->interlace == 1 ? "yes" : "no");
#endif

   if (ihdr->compression != 0)
      GOTO_END_ERROR();

   //if (ihdr->interlace != 0) // No Adam7 supported.
   //   GOTO_END_ERROR();

end:
   png_free_chunk(chunk);
   return ret;
}

Ejemplo n.º 6

Archivo: rpng_decode_fnbio.c Proyecto: maddox/RetroArch

static bool png_parse_ihdr(uint8_t *buf,
      struct png_ihdr *ihdr)
{
   unsigned i;
   bool ret = true;

   buf += 4 + 4;

   ihdr->width       = dword_be(buf + 0);
   ihdr->height      = dword_be(buf + 4);
   ihdr->depth       = buf[8];
   ihdr->color_type  = buf[9];
   ihdr->compression = buf[10];
   ihdr->filter      = buf[11];
   ihdr->interlace   = buf[12];

   if (ihdr->width == 0 || ihdr->height == 0)
      GOTO_END_ERROR();

   if (ihdr->color_type == 2 || 
         ihdr->color_type == 4 || ihdr->color_type == 6)
   {
      if (ihdr->depth != 8 && ihdr->depth != 16)
         GOTO_END_ERROR();
   }
   else if (ihdr->color_type == 0)
   {
      static const unsigned valid_bpp[] = { 1, 2, 4, 8, 16 };
      bool correct_bpp = false;

      for (i = 0; i < ARRAY_SIZE(valid_bpp); i++)
      {
         if (valid_bpp[i] == ihdr->depth)
         {
            correct_bpp = true;
            break;
         }
      }

      if (!correct_bpp)
         GOTO_END_ERROR();
   }
   else if (ihdr->color_type == 3)
   {
      static const unsigned valid_bpp[] = { 1, 2, 4, 8 };
      bool correct_bpp = false;

      for (i = 0; i < ARRAY_SIZE(valid_bpp); i++)
      {
         if (valid_bpp[i] == ihdr->depth)
         {
            correct_bpp = true;
            break;
         }
      }

      if (!correct_bpp)
         GOTO_END_ERROR();
   }
   else
      GOTO_END_ERROR();

#ifdef RPNG_TEST
   fprintf(stderr, "IHDR: (%u x %u), bpc = %u, palette = %s, color = %s, alpha = %s, adam7 = %s.\n",
         ihdr->width, ihdr->height,
         ihdr->depth, ihdr->color_type == 3 ? "yes" : "no",
         ihdr->color_type & 2 ? "yes" : "no",
         ihdr->color_type & 4 ? "yes" : "no",
         ihdr->interlace == 1 ? "yes" : "no");
#endif

   if (ihdr->compression != 0)
      GOTO_END_ERROR();

#if 0
   if (ihdr->interlace != 0) /* No Adam7 supported. */
      GOTO_END_ERROR();
#endif

end:
   return ret;
}