From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- gfx/harfbuzz/src/hb-wasm-api-buffer.hh | 217 +++++++++++++++++++++++++++++++++ 1 file changed, 217 insertions(+) create mode 100644 gfx/harfbuzz/src/hb-wasm-api-buffer.hh (limited to 'gfx/harfbuzz/src/hb-wasm-api-buffer.hh') diff --git a/gfx/harfbuzz/src/hb-wasm-api-buffer.hh b/gfx/harfbuzz/src/hb-wasm-api-buffer.hh new file mode 100644 index 0000000000..64217a041f --- /dev/null +++ b/gfx/harfbuzz/src/hb-wasm-api-buffer.hh @@ -0,0 +1,217 @@ +/* + * Copyright © 2023 Behdad Esfahbod + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_WASM_API_BUFFER_HH +#define HB_WASM_API_BUFFER_HH + +#include "hb-wasm-api.hh" + +#include "hb-buffer.hh" + +namespace hb { +namespace wasm { + +static_assert (sizeof (glyph_info_t) == sizeof (hb_glyph_info_t), ""); +static_assert (sizeof (glyph_position_t) == sizeof (hb_glyph_position_t), ""); + +HB_WASM_API (bool_t, buffer_contents_realloc) (HB_WASM_EXEC_ENV + ptr_d(buffer_contents_t, contents), + uint32_t size) +{ + HB_PTR_PARAM (buffer_contents_t, contents); + if (unlikely (!contents)) + return false; + + if (size <= contents->length) + return true; + + unsigned bytes; + if (hb_unsigned_mul_overflows (size, sizeof (glyph_info_t), &bytes)) + return false; + + glyph_info_t *info = HB_ARRAY_APP2NATIVE (glyph_info_t, contents->info, contents->length); + glyph_position_t *pos = HB_ARRAY_APP2NATIVE (glyph_position_t, contents->pos, contents->length); + + if (unlikely (!info || !pos)) + return false; + + glyph_info_t *new_info = nullptr; + uint32_t new_inforef = module_malloc (bytes, (void **) &new_info); + glyph_position_t *new_pos = nullptr; + uint32_t new_posref = module_malloc (bytes, (void **) &new_pos); + + unsigned old_bytes = contents->length * sizeof (glyph_info_t); + if (likely (new_inforef)) + { + hb_memcpy (new_info, info, old_bytes); + module_free (contents->info); + contents->info = new_inforef; + } + if (likely (new_posref)) + { + hb_memcpy (new_pos, pos, old_bytes); + module_free (contents->pos); + contents->pos = new_posref; + } + + if (likely (new_info && new_pos)) + { + contents->length = size; + return true; + } + + return false; +} + +HB_WASM_API (void, buffer_contents_free) (HB_WASM_EXEC_ENV + ptr_d(buffer_contents_t, contents)) +{ + HB_PTR_PARAM (buffer_contents_t, contents); + if (unlikely (!contents)) + return; + + module_free (contents->info); + module_free (contents->pos); + + contents->info = nullref; + contents->pos = nullref; + contents->length = 0; +} + +HB_WASM_API (bool_t, buffer_copy_contents) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer), + ptr_d(buffer_contents_t, contents)) +{ + HB_REF2OBJ (buffer); + HB_PTR_PARAM (buffer_contents_t, contents); + if (unlikely (!contents)) + return false; + + if (buffer->have_output) + buffer->sync (); + if (!buffer->have_positions) + buffer->clear_positions (); + + unsigned length = buffer->len; + + if (length <= contents->length) + { + glyph_info_t *info = HB_ARRAY_APP2NATIVE (glyph_info_t, contents->info, length); + glyph_position_t *pos = HB_ARRAY_APP2NATIVE (glyph_position_t, contents->pos, length); + + if (unlikely (!info || !pos)) + { + contents->length = 0; + return false; + } + + unsigned bytes = length * sizeof (hb_glyph_info_t); + hb_memcpy (info, buffer->info, bytes); + hb_memcpy (pos, buffer->pos, bytes); + + return true; + } + + module_free (contents->info); + module_free (contents->pos); + + contents->length = length; + unsigned bytes = length * sizeof (hb_glyph_info_t); + contents->info = wasm_runtime_module_dup_data (module_inst, (const char *) buffer->info, bytes); + contents->pos = wasm_runtime_module_dup_data (module_inst, (const char *) buffer->pos, bytes); + + if (length && (!contents->info || !contents->pos)) + { + contents->length = 0; + return false; + } + + return true; +} + +HB_WASM_API (bool_t, buffer_set_contents) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer), + ptr_d(const buffer_contents_t, contents)) +{ + HB_REF2OBJ (buffer); + HB_PTR_PARAM (buffer_contents_t, contents); + if (unlikely (!contents)) + return false; + + unsigned length = contents->length; + unsigned bytes; + if (unlikely (hb_unsigned_mul_overflows (length, sizeof (buffer->info[0]), &bytes))) + return false; + + if (unlikely (!buffer->resize (length))) + return false; + + glyph_info_t *info = (glyph_info_t *) (validate_app_addr (contents->info, bytes) ? addr_app_to_native (contents->info) : nullptr); + glyph_position_t *pos = (glyph_position_t *) (validate_app_addr (contents->pos, bytes) ? addr_app_to_native (contents->pos) : nullptr); + + if (!buffer->have_positions) + buffer->clear_positions (); /* This is wasteful. */ + + hb_memcpy (buffer->info, info, bytes); + hb_memcpy (buffer->pos, pos, bytes); + buffer->len = length; + + return true; +} + +HB_WASM_API (direction_t, buffer_get_direction) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer)) +{ + HB_REF2OBJ (buffer); + + return (direction_t) hb_buffer_get_direction (buffer); +} + +HB_WASM_API (script_t, buffer_get_script) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer)) +{ + HB_REF2OBJ (buffer); + + return hb_script_to_iso15924_tag (hb_buffer_get_script (buffer)); +} + +HB_WASM_API (void, buffer_reverse) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer)) +{ + HB_REF2OBJ (buffer); + + hb_buffer_reverse (buffer); +} + +HB_WASM_API (void, buffer_reverse_clusters) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer)) +{ + HB_REF2OBJ (buffer); + + hb_buffer_reverse_clusters (buffer); +} + +}} + +#endif /* HB_WASM_API_BUFFER_HH */ -- cgit v1.2.3