else if (chunk_name == png_IDAT)
{
+#ifdef PNG_READ_APNG_SUPPORTED
+ png_have_info(png_ptr, info_ptr);
+#endif
png_ptr->idat_size = length;
break;
}
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
+#ifdef PNG_READ_APNG_SUPPORTED
+ else if (chunk_name == png_acTL)
+ png_handle_acTL(png_ptr, info_ptr, length);
+
+ else if (chunk_name == png_fcTL)
+ png_handle_fcTL(png_ptr, info_ptr, length);
+
+ else if (chunk_name == png_fdAT)
+ png_handle_fdAT(png_ptr, info_ptr, length);
+#endif
+
else
png_handle_unknown(png_ptr, info_ptr, length,
PNG_HANDLE_CHUNK_AS_DEFAULT);
}
#endif /* SEQUENTIAL_READ */
+#ifdef PNG_READ_APNG_SUPPORTED
+void PNGAPI
+png_read_frame_head(png_structp png_ptr, png_infop info_ptr)
+{
+ png_byte have_chunk_after_DAT; /* after IDAT or after fdAT */
+
+ png_debug(0, "Reading frame head");
+
+ if (!(png_ptr->mode & PNG_HAVE_acTL))
+ png_error(png_ptr, "attempt to png_read_frame_head() but "
+ "no acTL present");
+
+ /* do nothing for the main IDAT */
+ if (png_ptr->num_frames_read == 0)
+ return;
+
+ png_read_reset(png_ptr);
+ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
+ png_ptr->mode &= ~PNG_HAVE_fcTL;
+
+ have_chunk_after_DAT = 0;
+ for (;;)
+ {
+ png_uint_32 length = png_read_chunk_header(png_ptr);
+
+ if (png_ptr->chunk_name == png_IDAT)
+ {
+ /* discard trailing IDATs for the first frame */
+ if (have_chunk_after_DAT || png_ptr->num_frames_read > 1)
+ png_error(png_ptr, "png_read_frame_head(): out of place IDAT");
+ png_crc_finish(png_ptr, length);
+ }
+
+ else if (png_ptr->chunk_name == png_fcTL)
+ {
+ png_handle_fcTL(png_ptr, info_ptr, length);
+ have_chunk_after_DAT = 1;
+ }
+
+ else if (png_ptr->chunk_name == png_fdAT)
+ {
+ png_ensure_sequence_number(png_ptr, length);
+
+ /* discard trailing fdATs for frames other than the first */
+ if (!have_chunk_after_DAT && png_ptr->num_frames_read > 1)
+ png_crc_finish(png_ptr, length - 4);
+ else if(png_ptr->mode & PNG_HAVE_fcTL)
+ {
+ png_ptr->idat_size = length - 4;
+ png_ptr->mode |= PNG_HAVE_IDAT;
+
+ break;
+ }
+ else
+ png_error(png_ptr, "png_read_frame_head(): out of place fdAT");
+ }
+ else
+ {
+ png_warning(png_ptr, "Skipped (ignored) a chunk "
+ "between APNG chunks");
+ png_crc_finish(png_ptr, length);
+ }
+ }
+}
+#endif /* PNG_READ_APNG_SUPPORTED */
+
/* Optional call to update the users info_ptr structure */
void PNGAPI
png_read_update_info(png_structrp png_ptr, png_inforp info_ptr)
}
}
}
+
+#ifdef __TIZEN__
+void PNGAPI
+png_read_image_with_pick_color(png_structp png_ptr, png_bytepp image, PngPickColor *pickcolor)
+{
+ png_uint_32 i, image_height;
+ int pass, j;
+ png_uint_32 /*k = 0,*/ image_bpp = 0, image_width;
+ png_bytepp rp;
+ //png_bytep rc;
+ unsigned int npixels;
+ int perc_enable_y1, perc_enable_y2;
+ png_debug(1, "in png_read_image");
+
+ if (png_ptr == NULL || pickcolor == NULL)
+ return;
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ {
+ pass = png_set_interlace_handling(png_ptr);
+ /* And make sure transforms are initialized. */
+ png_start_read_image(png_ptr);
+ }
+ else
+ {
+ if (png_ptr->interlaced && !(png_ptr->transformations & PNG_INTERLACE))
+ {
+ /* Caller called png_start_read_image or png_read_update_info without
+ * first turning on the PNG_INTERLACE transform. We can fix this here,
+ * but the caller should do it!
+ */
+ png_warning(png_ptr, "Interlace handling should be turned on when "
+ "using png_read_image");
+ /* Make sure this is set correctly */
+ png_ptr->num_rows = png_ptr->height;
+ }
+
+ /* Obtain the pass number, which also turns on the PNG_INTERLACE flag in
+ * the above error case.
+ */
+ pass = png_set_interlace_handling(png_ptr);
+ }
+#else
+ if (png_ptr->interlaced)
+ png_error(png_ptr,
+ "Cannot read interlaced image -- interlace handler disabled");
+
+ pass = 1;
+#endif
+
+ image_height=png_ptr->height;
+ image_bpp=png_ptr->rowbytes;
+ image_width=png_ptr->width;
+ png_ptr->user_chunk_ptr = pickcolor;
+
+ if(pickcolor->perc < 0)
+ {
+ png_error(png_ptr, "ColorPick percentage is negative");
+ return;
+ }
+ if( (pickcolor->region < PNG_COLORPICK_TOP) || (pickcolor->region > PNG_COLORPICK_BOTTOM))
+ {
+ png_error(png_ptr, "ColorPick Region is out of bound");
+ return;
+ }
+ if(pickcolor->region == PNG_COLORPICK_TOP)
+ {
+ perc_enable_y1 = 0;
+ perc_enable_y2 = (pickcolor->perc*image_height/100) - 1;
+ }
+ else if(pickcolor->region == PNG_COLORPICK_MIDDLE)
+ {
+ perc_enable_y1 = (image_height/2) - (((pickcolor->perc/2)*image_height)/100);
+ perc_enable_y2 = perc_enable_y1 + ((pickcolor->perc*image_height)/100) - 1;
+ }
+ else
+ {
+ perc_enable_y1 = (image_height) - ( pickcolor->perc * image_height / 100 );
+ perc_enable_y2 = image_height - 1;
+ }
+
+ for (j = 0; j < pass; j++)
+ {
+ rp = image;
+ for (i = 0; i < image_height; i++)
+ {
+ pickcolor->enable = 0;
+ if( pickcolor->perc > 0 )
+ {
+ if( (int)i >= perc_enable_y1 && (int)i <= perc_enable_y2)
+ {
+ pickcolor->enable = 1;
+ }
+ }
+ else
+ {
+ if( ((int)i >= pickcolor->y1) && ((int)i <= pickcolor->y2) )
+ {
+ pickcolor->enable = 1;
+ }
+ }
+ png_read_row(png_ptr, *rp, NULL);
+ rp++;
+ }
+ }
+
+
+ if(pickcolor->perc > 0)
+ {
+ npixels = (pickcolor->perc*image_height*image_width)/100;
+ }
+ else
+ {
+ npixels = (pickcolor->x2-pickcolor->x1+1)*(pickcolor->y2-pickcolor->y1+1);
+ }
+ if(npixels > 0)
+ {
+ pickcolor->sumR = pickcolor->sumR/npixels;
+ pickcolor->sumG = pickcolor->sumG/npixels;
+ pickcolor->sumB = pickcolor->sumB/npixels;
+ }
+}
+#endif /* __TIZEN__ */
#endif /* SEQUENTIAL_READ */
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
mode = PNG_ALPHA_PNG;
output_gamma = PNG_DEFAULT_sRGB;
}
-
+
if ((change & PNG_FORMAT_FLAG_ASSOCIATED_ALPHA) != 0)
{
mode = PNG_ALPHA_OPTIMIZED;
change &= ~PNG_FORMAT_FLAG_ASSOCIATED_ALPHA;
}
-
+
/* If 'do_local_background' is set check for the presence of gamma
* correction; this is part of the work-round for the libpng bug
* described above.
projects / platform / upstream / libpng.git / blobdiff