+#ifdef PNG_sPLT_SUPPORTED
+void PNGAPI
+png_set_sPLT(png_structp png_ptr,
+ png_infop info_ptr, png_const_sPLT_tp entries, int nentries)
+/*
+ * entries - array of png_sPLT_t structures
+ * to be added to the list of palettes
+ * in the info structure.
+ *
+ * nentries - number of palette structures to be
+ * added.
+ */
+{
+ png_sPLT_tp np;
+ int i;
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ np = (png_sPLT_tp)png_malloc_warn(png_ptr,
+ (info_ptr->splt_palettes_num + nentries) *
+ (png_size_t)png_sizeof(png_sPLT_t));
+
+ if (np == NULL)
+ {
+ png_warning(png_ptr, "No memory for sPLT palettes");
+ return;
+ }
+
+ png_memcpy(np, info_ptr->splt_palettes,
+ info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t));
+
+ png_free(png_ptr, info_ptr->splt_palettes);
+ info_ptr->splt_palettes=NULL;
+
+ for (i = 0; i < nentries; i++)
+ {
+ png_sPLT_tp to = np + info_ptr->splt_palettes_num + i;
+ png_const_sPLT_tp from = entries + i;
+ png_size_t length;
+
+ length = png_strlen(from->name) + 1;
+ to->name = (png_charp)png_malloc_warn(png_ptr, length);
+
+ if (to->name == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing sPLT chunk");
+ continue;
+ }
+
+ png_memcpy(to->name, from->name, length);
+ to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
+ from->nentries * png_sizeof(png_sPLT_entry));
+
+ if (to->entries == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing sPLT chunk");
+ png_free(png_ptr, to->name);
+ to->name = NULL;
+ continue;
+ }
+
+ png_memcpy(to->entries, from->entries,
+ from->nentries * png_sizeof(png_sPLT_entry));
+
+ to->nentries = from->nentries;
+ to->depth = from->depth;
+ }
+
+ info_ptr->splt_palettes = np;
+ info_ptr->splt_palettes_num += nentries;
+ info_ptr->valid |= PNG_INFO_sPLT;
+ info_ptr->free_me |= PNG_FREE_SPLT;
+}
+#endif /* PNG_sPLT_SUPPORTED */
+
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+void PNGAPI
+png_set_unknown_chunks(png_structp png_ptr,
+ png_infop info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns)
+{
+ png_unknown_chunkp np;
+ int i;
+
+ if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0)
+ return;
+
+ np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
+ (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) *
+ png_sizeof(png_unknown_chunk));
+
+ if (np == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing unknown chunk");
+ return;
+ }
+
+ png_memcpy(np, info_ptr->unknown_chunks,
+ (png_size_t)info_ptr->unknown_chunks_num *
+ png_sizeof(png_unknown_chunk));
+
+ png_free(png_ptr, info_ptr->unknown_chunks);
+ info_ptr->unknown_chunks = NULL;
+
+ for (i = 0; i < num_unknowns; i++)
+ {
+ png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
+ png_const_unknown_chunkp from = unknowns + i;
+
+ png_memcpy(to->name, from->name, png_sizeof(from->name));
+ to->name[png_sizeof(to->name)-1] = '\0';
+ to->size = from->size;
+
+ /* Note our location in the read or write sequence */
+ to->location = (png_byte)(png_ptr->mode & 0xff);
+
+ if (from->size == 0)
+ to->data=NULL;
+
+ else
+ {
+ to->data = (png_bytep)png_malloc_warn(png_ptr,
+ (png_size_t)from->size);
+
+ if (to->data == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing unknown chunk");
+ to->size = 0;
+ }
+
+ else
+ png_memcpy(to->data, from->data, from->size);
+ }
+ }
+
+ info_ptr->unknown_chunks = np;
+ info_ptr->unknown_chunks_num += num_unknowns;
+ info_ptr->free_me |= PNG_FREE_UNKN;
+}
+
+void PNGAPI
+png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
+ int chunk, int location)
+{
+ if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
+ info_ptr->unknown_chunks_num)
+ info_ptr->unknown_chunks[chunk].location = (png_byte)location;
+}
+#endif
+
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+png_uint_32 PNGAPI
+png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
+{
+ png_debug(1, "in png_permit_mng_features");
+
+ if (png_ptr == NULL)
+ return (png_uint_32)0;
+
+ png_ptr->mng_features_permitted =
+ (png_byte)(mng_features & PNG_ALL_MNG_FEATURES);
+
+ return (png_uint_32)png_ptr->mng_features_permitted;
+}
+#endif
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+void PNGAPI
+png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_const_bytep
+ chunk_list, int num_chunks)
+{
+ png_bytep new_list, p;
+ int i, old_num_chunks;
+ if (png_ptr == NULL)
+ return;
+
+ if (num_chunks == 0)
+ {
+ if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE)
+ png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
+
+ else
+ png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
+
+ if (keep == PNG_HANDLE_CHUNK_ALWAYS)
+ png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS;
+
+ else
+ png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS;
+
+ return;
+ }
+
+ if (chunk_list == NULL)
+ return;
+
+ old_num_chunks = png_ptr->num_chunk_list;
+ new_list=(png_bytep)png_malloc(png_ptr,
+ (png_size_t)(5*(num_chunks + old_num_chunks)));
+
+ if (png_ptr->chunk_list != NULL)
+ {
+ png_memcpy(new_list, png_ptr->chunk_list,
+ (png_size_t)(5*old_num_chunks));
+ png_free(png_ptr, png_ptr->chunk_list);
+ png_ptr->chunk_list=NULL;
+ }
+
+ png_memcpy(new_list + 5*old_num_chunks, chunk_list,
+ (png_size_t)(5*num_chunks));
+
+ for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5)
+ *p=(png_byte)keep;
+
+ png_ptr->num_chunk_list = old_num_chunks + num_chunks;
+ png_ptr->chunk_list = new_list;
+ png_ptr->free_me |= PNG_FREE_LIST;
+}
+#endif
+
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+void PNGAPI
+png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr,
+ png_user_chunk_ptr read_user_chunk_fn)
+{
+ png_debug(1, "in png_set_read_user_chunk_fn");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->read_user_chunk_fn = read_user_chunk_fn;
+ png_ptr->user_chunk_ptr = user_chunk_ptr;
+}
+#endif
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+void PNGAPI
+png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
+{
+ png_debug1(1, "in %s storage function", "rows");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers))
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
+
+ info_ptr->row_pointers = row_pointers;
+
+ if (row_pointers)
+ info_ptr->valid |= PNG_INFO_IDAT;
+}
+#endif
+
+void PNGAPI
+png_set_compression_buffer_size(png_structp png_ptr, png_size_t size)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_free(png_ptr, png_ptr->zbuf);
+
+ if (size > ZLIB_IO_MAX)
+ {
+ png_warning(png_ptr, "Attempt to set buffer size beyond max ignored");
+ png_ptr->zbuf_size = ZLIB_IO_MAX;
+ size = ZLIB_IO_MAX; /* must fit */
+ }
+
+ else
+ png_ptr->zbuf_size = (uInt)size;
+
+ png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
+
+ /* The following ensures a relatively safe failure if this gets called while
+ * the buffer is actually in use.
+ */
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = 0;
+ png_ptr->zstream.avail_in = 0;
+}
+
+void PNGAPI
+png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
+{
+ if (png_ptr && info_ptr)
+ info_ptr->valid &= ~mask;
+}
+
+
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+/* This function was added to libpng 1.2.6 */
+void PNGAPI
+png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
+ png_uint_32 user_height_max)
+{
+ /* Images with dimensions larger than these limits will be
+ * rejected by png_set_IHDR(). To accept any PNG datastream
+ * regardless of dimensions, set both limits to 0x7ffffffL.
+ */
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->user_width_max = user_width_max;
+ png_ptr->user_height_max = user_height_max;
+}
+
+/* This function was added to libpng 1.4.0 */
+void PNGAPI
+png_set_chunk_cache_max (png_structp png_ptr,
+ png_uint_32 user_chunk_cache_max)
+{
+ if (png_ptr)
+ png_ptr->user_chunk_cache_max = user_chunk_cache_max;
+}
+
+/* This function was added to libpng 1.4.1 */
+void PNGAPI
+png_set_chunk_malloc_max (png_structp png_ptr,
+ png_alloc_size_t user_chunk_malloc_max)
+{
+ if (png_ptr)
+ png_ptr->user_chunk_malloc_max = user_chunk_malloc_max;
+}
+#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
+
+
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+void PNGAPI
+png_set_benign_errors(png_structp png_ptr, int allowed)
+{
+ png_debug(1, "in png_set_benign_errors");
+
+ if (allowed)
+ png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN;
+
+ else
+ png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN;
+}
+#endif /* PNG_BENIGN_ERRORS_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
projects / wxWidgets.git / blobdiff