Lines Matching refs:png_ptr
21 png_get_uint_31(png_const_structrp png_ptr, png_const_bytep buf) in png_get_uint_31() argument
26 png_error(png_ptr, "PNG unsigned integer out of range"); in png_get_uint_31()
40 png_get_fixed_point(png_structrp png_ptr, png_const_bytep buf) in png_get_fixed_point() argument
48 if (png_ptr != NULL) in png_get_fixed_point()
49 png_warning(png_ptr, "PNG fixed point integer out of range"); in png_get_fixed_point()
114 png_read_sig(png_structrp png_ptr, png_inforp info_ptr) in png_read_sig() argument
119 if (png_ptr->sig_bytes >= 8) in png_read_sig()
122 num_checked = png_ptr->sig_bytes; in png_read_sig()
126 png_ptr->io_state = PNG_IO_READING | PNG_IO_SIGNATURE; in png_read_sig()
130 png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check); in png_read_sig()
131 png_ptr->sig_bytes = 8; in png_read_sig()
137 png_error(png_ptr, "Not a PNG file"); in png_read_sig()
139 png_error(png_ptr, "PNG file corrupted by ASCII conversion"); in png_read_sig()
142 png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE; in png_read_sig()
149 png_read_chunk_header(png_structrp png_ptr) in png_read_chunk_header() argument
155 png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_HDR; in png_read_chunk_header()
161 png_read_data(png_ptr, buf, 8); in png_read_chunk_header()
162 length = png_get_uint_31(png_ptr, buf); in png_read_chunk_header()
165 png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(buf+4); in png_read_chunk_header()
168 (unsigned long)png_ptr->chunk_name, (unsigned long)length); in png_read_chunk_header()
171 png_reset_crc(png_ptr); in png_read_chunk_header()
172 png_calculate_crc(png_ptr, buf + 4, 4); in png_read_chunk_header()
175 png_check_chunk_name(png_ptr, png_ptr->chunk_name); in png_read_chunk_header()
178 png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA; in png_read_chunk_header()
186 png_crc_read(png_structrp png_ptr, png_bytep buf, png_uint_32 length) in png_crc_read() argument
188 if (png_ptr == NULL) in png_crc_read()
191 png_read_data(png_ptr, buf, length); in png_crc_read()
192 png_calculate_crc(png_ptr, buf, length); in png_crc_read()
201 png_crc_finish(png_structrp png_ptr, png_uint_32 skip) in png_crc_finish() argument
216 png_crc_read(png_ptr, tmpbuf, len); in png_crc_finish()
219 if (png_crc_error(png_ptr)) in png_crc_finish()
221 if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) ? in png_crc_finish()
222 !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) : in png_crc_finish()
223 (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE)) in png_crc_finish()
225 png_chunk_warning(png_ptr, "CRC error"); in png_crc_finish()
230 png_chunk_benign_error(png_ptr, "CRC error"); in png_crc_finish()
244 png_crc_error(png_structrp png_ptr) in png_crc_error() argument
250 if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name)) in png_crc_error()
252 if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) == in png_crc_error()
259 if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) in png_crc_error()
264 png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC; in png_crc_error()
268 png_read_data(png_ptr, crc_bytes, 4); in png_crc_error()
273 return ((int)(crc != png_ptr->crc)); in png_crc_error()
287 png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn) in png_read_buffer() argument
289 png_bytep buffer = png_ptr->read_buffer; in png_read_buffer()
291 if (buffer != NULL && new_size > png_ptr->read_buffer_size) in png_read_buffer()
293 png_ptr->read_buffer = NULL; in png_read_buffer()
294 png_ptr->read_buffer = NULL; in png_read_buffer()
295 png_ptr->read_buffer_size = 0; in png_read_buffer()
296 png_free(png_ptr, buffer); in png_read_buffer()
302 buffer = png_voidcast(png_bytep, png_malloc_base(png_ptr, new_size)); in png_read_buffer()
306 png_ptr->read_buffer = buffer; in png_read_buffer()
307 png_ptr->read_buffer_size = new_size; in png_read_buffer()
314 png_chunk_warning(png_ptr, "insufficient memory to read chunk"); in png_read_buffer()
319 png_chunk_error(png_ptr, "insufficient memory to read chunk"); in png_read_buffer()
334 png_inflate_claim(png_structrp png_ptr, png_uint_32 owner) in png_inflate_claim() argument
336 if (png_ptr->zowner != 0) in png_inflate_claim()
340 PNG_STRING_FROM_CHUNK(msg, png_ptr->zowner); in png_inflate_claim()
347 png_chunk_warning(png_ptr, msg); in png_inflate_claim()
348 png_ptr->zowner = 0; in png_inflate_claim()
350 png_chunk_error(png_ptr, msg); in png_inflate_claim()
375 if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) == in png_inflate_claim()
389 png_ptr->zstream.next_in = NULL; in png_inflate_claim()
390 png_ptr->zstream.avail_in = 0; in png_inflate_claim()
391 png_ptr->zstream.next_out = NULL; in png_inflate_claim()
392 png_ptr->zstream.avail_out = 0; in png_inflate_claim()
394 if (png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) in png_inflate_claim()
397 ret = inflateReset(&png_ptr->zstream); in png_inflate_claim()
399 ret = inflateReset2(&png_ptr->zstream, window_bits); in png_inflate_claim()
406 ret = inflateInit(&png_ptr->zstream); in png_inflate_claim()
408 ret = inflateInit2(&png_ptr->zstream, window_bits); in png_inflate_claim()
412 png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED; in png_inflate_claim()
416 png_ptr->zowner = owner; in png_inflate_claim()
419 png_zstream_error(png_ptr, ret); in png_inflate_claim()
442 png_inflate(png_structrp png_ptr, png_uint_32 owner, int finish, in png_inflate() argument
446 if (png_ptr->zowner == owner) /* Else not claimed */ in png_inflate()
461 png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input); in png_inflate()
463 png_ptr->zstream.avail_in = 0; in png_inflate()
464 png_ptr->zstream.avail_out = 0; in png_inflate()
470 png_ptr->zstream.next_out = output; in png_inflate()
485 avail_in += png_ptr->zstream.avail_in; /* not consumed last time */ in png_inflate()
493 png_ptr->zstream.avail_in = avail; in png_inflate()
496 avail_out += png_ptr->zstream.avail_out; /* not written last time */ in png_inflate()
505 png_ptr->zstream.next_out = local_buffer; in png_inflate()
513 png_ptr->zstream.avail_out = avail; in png_inflate()
522 ret = inflate(&png_ptr->zstream, avail_out > 0 ? Z_NO_FLUSH : in png_inflate()
528 png_ptr->zstream.next_out = NULL; in png_inflate()
531 avail_in += png_ptr->zstream.avail_in; in png_inflate()
532 avail_out += png_ptr->zstream.avail_out; in png_inflate()
544 png_zstream_error(png_ptr, ret); in png_inflate()
554 png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed"); in png_inflate()
567 png_decompress_chunk(png_structrp png_ptr, in png_decompress_chunk() argument
582 if (png_ptr->user_chunk_malloc_max > 0 && in png_decompress_chunk()
583 png_ptr->user_chunk_malloc_max < limit) in png_decompress_chunk()
584 limit = png_ptr->user_chunk_malloc_max; in png_decompress_chunk()
600 ret = png_inflate_claim(png_ptr, png_ptr->chunk_name); in png_decompress_chunk()
606 ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/, in png_decompress_chunk()
607 /* input: */ png_ptr->read_buffer + prefix_size, &lzsize, in png_decompress_chunk()
619 if (inflateReset(&png_ptr->zstream) == Z_OK) in png_decompress_chunk()
629 png_bytep text = png_voidcast(png_bytep, png_malloc_base(png_ptr, in png_decompress_chunk()
634 ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/, in png_decompress_chunk()
635 png_ptr->read_buffer + prefix_size, &lzsize, in png_decompress_chunk()
646 memcpy(text, png_ptr->read_buffer, prefix_size); in png_decompress_chunk()
649 png_bytep old_ptr = png_ptr->read_buffer; in png_decompress_chunk()
651 png_ptr->read_buffer = text; in png_decompress_chunk()
652 png_ptr->read_buffer_size = buffer_size; in png_decompress_chunk()
675 png_free(png_ptr, text); in png_decompress_chunk()
682 png_chunk_benign_error(png_ptr, "extra compressed data"); in png_decompress_chunk()
689 png_zstream_error(png_ptr, Z_MEM_ERROR); in png_decompress_chunk()
696 png_zstream_error(png_ptr, ret); in png_decompress_chunk()
707 png_ptr->zowner = 0; in png_decompress_chunk()
719 png_zstream_error(png_ptr, Z_MEM_ERROR); in png_decompress_chunk()
730 png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size, in png_inflate_read() argument
734 if (png_ptr->zowner == png_ptr->chunk_name) in png_inflate_read()
739 png_ptr->zstream.next_out = next_out; in png_inflate_read()
740 png_ptr->zstream.avail_out = 0; /* set in the loop */ in png_inflate_read()
744 if (png_ptr->zstream.avail_in == 0) in png_inflate_read()
751 png_crc_read(png_ptr, read_buffer, read_size); in png_inflate_read()
753 png_ptr->zstream.next_in = read_buffer; in png_inflate_read()
754 png_ptr->zstream.avail_in = read_size; in png_inflate_read()
757 if (png_ptr->zstream.avail_out == 0) in png_inflate_read()
764 png_ptr->zstream.avail_out = avail; in png_inflate_read()
771 ret = inflate(&png_ptr->zstream, in png_inflate_read()
774 while (ret == Z_OK && (*out_size > 0 || png_ptr->zstream.avail_out > 0)); in png_inflate_read()
776 *out_size += png_ptr->zstream.avail_out; in png_inflate_read()
777 png_ptr->zstream.avail_out = 0; /* Should not be required, but is safe */ in png_inflate_read()
780 png_zstream_error(png_ptr, ret); in png_inflate_read()
786 png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed"); in png_inflate_read()
794 png_handle_IHDR(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_IHDR() argument
803 if (png_ptr->mode & PNG_HAVE_IHDR) in png_handle_IHDR()
804 png_chunk_error(png_ptr, "out of place"); in png_handle_IHDR()
808 png_chunk_error(png_ptr, "invalid"); in png_handle_IHDR()
810 png_ptr->mode |= PNG_HAVE_IHDR; in png_handle_IHDR()
812 png_crc_read(png_ptr, buf, 13); in png_handle_IHDR()
813 png_crc_finish(png_ptr, 0); in png_handle_IHDR()
815 width = png_get_uint_31(png_ptr, buf); in png_handle_IHDR()
816 height = png_get_uint_31(png_ptr, buf + 4); in png_handle_IHDR()
824 png_ptr->width = width; in png_handle_IHDR()
825 png_ptr->height = height; in png_handle_IHDR()
826 png_ptr->bit_depth = (png_byte)bit_depth; in png_handle_IHDR()
827 png_ptr->interlaced = (png_byte)interlace_type; in png_handle_IHDR()
828 png_ptr->color_type = (png_byte)color_type; in png_handle_IHDR()
830 png_ptr->filter_type = (png_byte)filter_type; in png_handle_IHDR()
832 png_ptr->compression_type = (png_byte)compression_type; in png_handle_IHDR()
835 switch (png_ptr->color_type) in png_handle_IHDR()
840 png_ptr->channels = 1; in png_handle_IHDR()
844 png_ptr->channels = 3; in png_handle_IHDR()
848 png_ptr->channels = 2; in png_handle_IHDR()
852 png_ptr->channels = 4; in png_handle_IHDR()
857 png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth * in png_handle_IHDR()
858 png_ptr->channels); in png_handle_IHDR()
859 png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width); in png_handle_IHDR()
860 png_debug1(3, "bit_depth = %d", png_ptr->bit_depth); in png_handle_IHDR()
861 png_debug1(3, "channels = %d", png_ptr->channels); in png_handle_IHDR()
862 png_debug1(3, "rowbytes = %lu", (unsigned long)png_ptr->rowbytes); in png_handle_IHDR()
863 png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, in png_handle_IHDR()
869 png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_PLTE() argument
879 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_PLTE()
880 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_PLTE()
887 else if (png_ptr->mode & PNG_HAVE_PLTE) in png_handle_PLTE()
888 png_chunk_error(png_ptr, "duplicate"); in png_handle_PLTE()
890 else if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_PLTE()
895 png_crc_finish(png_ptr, length); in png_handle_PLTE()
896 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_PLTE()
900 png_ptr->mode |= PNG_HAVE_PLTE; in png_handle_PLTE()
902 if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR)) in png_handle_PLTE()
904 png_crc_finish(png_ptr, length); in png_handle_PLTE()
905 png_chunk_benign_error(png_ptr, "ignored in grayscale PNG"); in png_handle_PLTE()
910 if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
912 png_crc_finish(png_ptr, length); in png_handle_PLTE()
919 png_crc_finish(png_ptr, length); in png_handle_PLTE()
921 if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
922 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_PLTE()
925 png_chunk_error(png_ptr, "invalid"); in png_handle_PLTE()
938 png_crc_read(png_ptr, buf, 3); in png_handle_PLTE()
948 png_crc_read(png_ptr, buf, 3); in png_handle_PLTE()
962 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
965 png_crc_finish(png_ptr, 0); in png_handle_PLTE()
969 else if (png_crc_error(png_ptr)) /* Only if we have a CRC error */ in png_handle_PLTE()
980 if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE)) in png_handle_PLTE()
982 if (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) in png_handle_PLTE()
984 png_chunk_benign_error(png_ptr, "CRC error"); in png_handle_PLTE()
989 png_chunk_warning(png_ptr, "CRC error"); in png_handle_PLTE()
995 else if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)) in png_handle_PLTE()
997 png_chunk_warning(png_ptr, "CRC error"); in png_handle_PLTE()
1010 png_set_PLTE(png_ptr, info_ptr, palette, num); in png_handle_PLTE()
1022 if (png_ptr->num_trans > 0 || in png_handle_PLTE()
1029 png_ptr->num_trans = 0; in png_handle_PLTE()
1034 png_chunk_benign_error(png_ptr, "tRNS must be after"); in png_handle_PLTE()
1040 png_chunk_benign_error(png_ptr, "hIST must be after"); in png_handle_PLTE()
1045 png_chunk_benign_error(png_ptr, "bKGD must be after"); in png_handle_PLTE()
1050 png_handle_IEND(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_IEND() argument
1054 if (!(png_ptr->mode & PNG_HAVE_IHDR) || !(png_ptr->mode & PNG_HAVE_IDAT)) in png_handle_IEND()
1055 png_chunk_error(png_ptr, "out of place"); in png_handle_IEND()
1057 png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND); in png_handle_IEND()
1059 png_crc_finish(png_ptr, length); in png_handle_IEND()
1062 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_IEND()
1069 png_handle_gAMA(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_gAMA() argument
1076 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_gAMA()
1077 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_gAMA()
1079 else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) in png_handle_gAMA()
1081 png_crc_finish(png_ptr, length); in png_handle_gAMA()
1082 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_gAMA()
1088 png_crc_finish(png_ptr, length); in png_handle_gAMA()
1089 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_gAMA()
1093 png_crc_read(png_ptr, buf, 4); in png_handle_gAMA()
1095 if (png_crc_finish(png_ptr, 0)) in png_handle_gAMA()
1100 png_colorspace_set_gamma(png_ptr, &png_ptr->colorspace, igamma); in png_handle_gAMA()
1101 png_colorspace_sync(png_ptr, info_ptr); in png_handle_gAMA()
1107 png_handle_sBIT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sBIT() argument
1116 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_sBIT()
1117 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sBIT()
1119 else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) in png_handle_sBIT()
1121 png_crc_finish(png_ptr, length); in png_handle_sBIT()
1122 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sBIT()
1128 png_crc_finish(png_ptr, length); in png_handle_sBIT()
1129 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_sBIT()
1133 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_sBIT()
1137 truelen = png_ptr->channels; in png_handle_sBIT()
1141 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sBIT()
1142 png_crc_finish(png_ptr, length); in png_handle_sBIT()
1146 png_crc_read(png_ptr, buf, truelen); in png_handle_sBIT()
1148 if (png_crc_finish(png_ptr, 0)) in png_handle_sBIT()
1151 if (png_ptr->color_type & PNG_COLOR_MASK_COLOR) in png_handle_sBIT()
1153 png_ptr->sig_bit.red = buf[0]; in png_handle_sBIT()
1154 png_ptr->sig_bit.green = buf[1]; in png_handle_sBIT()
1155 png_ptr->sig_bit.blue = buf[2]; in png_handle_sBIT()
1156 png_ptr->sig_bit.alpha = buf[3]; in png_handle_sBIT()
1161 png_ptr->sig_bit.gray = buf[0]; in png_handle_sBIT()
1162 png_ptr->sig_bit.red = buf[0]; in png_handle_sBIT()
1163 png_ptr->sig_bit.green = buf[0]; in png_handle_sBIT()
1164 png_ptr->sig_bit.blue = buf[0]; in png_handle_sBIT()
1165 png_ptr->sig_bit.alpha = buf[1]; in png_handle_sBIT()
1168 png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit)); in png_handle_sBIT()
1174 png_handle_cHRM(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_cHRM() argument
1181 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_cHRM()
1182 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_cHRM()
1184 else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) in png_handle_cHRM()
1186 png_crc_finish(png_ptr, length); in png_handle_cHRM()
1187 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_cHRM()
1193 png_crc_finish(png_ptr, length); in png_handle_cHRM()
1194 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_cHRM()
1198 png_crc_read(png_ptr, buf, 32); in png_handle_cHRM()
1200 if (png_crc_finish(png_ptr, 0)) in png_handle_cHRM()
1221 png_chunk_benign_error(png_ptr, "invalid values"); in png_handle_cHRM()
1226 if (png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) in png_handle_cHRM()
1229 if (png_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) in png_handle_cHRM()
1231 png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; in png_handle_cHRM()
1232 png_colorspace_sync(png_ptr, info_ptr); in png_handle_cHRM()
1233 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_cHRM()
1237 png_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM; in png_handle_cHRM()
1238 (void)png_colorspace_set_chromaticities(png_ptr, &png_ptr->colorspace, &xy, in png_handle_cHRM()
1240 png_colorspace_sync(png_ptr, info_ptr); in png_handle_cHRM()
1246 png_handle_sRGB(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sRGB() argument
1252 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_sRGB()
1253 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sRGB()
1255 else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) in png_handle_sRGB()
1257 png_crc_finish(png_ptr, length); in png_handle_sRGB()
1258 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sRGB()
1264 png_crc_finish(png_ptr, length); in png_handle_sRGB()
1265 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sRGB()
1269 png_crc_read(png_ptr, &intent, 1); in png_handle_sRGB()
1271 if (png_crc_finish(png_ptr, 0)) in png_handle_sRGB()
1275 if (png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) in png_handle_sRGB()
1281 if (png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) in png_handle_sRGB()
1283 png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; in png_handle_sRGB()
1284 png_colorspace_sync(png_ptr, info_ptr); in png_handle_sRGB()
1285 png_chunk_benign_error(png_ptr, "too many profiles"); in png_handle_sRGB()
1289 (void)png_colorspace_set_sRGB(png_ptr, &png_ptr->colorspace, intent); in png_handle_sRGB()
1290 png_colorspace_sync(png_ptr, info_ptr); in png_handle_sRGB()
1296 png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_iCCP() argument
1304 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_iCCP()
1305 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_iCCP()
1307 else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) in png_handle_iCCP()
1309 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1310 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_iCCP()
1324 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1325 png_chunk_benign_error(png_ptr, "too short"); in png_handle_iCCP()
1330 if (png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) in png_handle_iCCP()
1332 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1339 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) == 0) in png_handle_iCCP()
1351 png_crc_read(png_ptr, (png_bytep)keyword, read_length); in png_handle_iCCP()
1370 if (png_inflate_claim(png_ptr, png_iCCP) == Z_OK) in png_handle_iCCP()
1376 png_ptr->zstream.next_in = (Bytef*)keyword + (keyword_length+2); in png_handle_iCCP()
1377 png_ptr->zstream.avail_in = read_length; in png_handle_iCCP()
1378 (void)png_inflate_read(png_ptr, local_buffer, in png_handle_iCCP()
1389 if (png_icc_check_length(png_ptr, &png_ptr->colorspace, in png_handle_iCCP()
1395 if (png_icc_check_header(png_ptr, &png_ptr->colorspace, in png_handle_iCCP()
1397 png_ptr->color_type)) in png_handle_iCCP()
1406 png_bytep profile = png_read_buffer(png_ptr, in png_handle_iCCP()
1416 (void)png_inflate_read(png_ptr, local_buffer, in png_handle_iCCP()
1425 if (png_icc_check_tag_table(png_ptr, in png_handle_iCCP()
1426 &png_ptr->colorspace, keyword, profile_length, in png_handle_iCCP()
1435 (void)png_inflate_read(png_ptr, local_buffer, in png_handle_iCCP()
1440 if (length > 0 && !(png_ptr->flags & in png_handle_iCCP()
1452 png_chunk_warning(png_ptr, in png_handle_iCCP()
1456 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1461 png_icc_set_sRGB(png_ptr, in png_handle_iCCP()
1462 &png_ptr->colorspace, profile, in png_handle_iCCP()
1463 png_ptr->zstream.adler); in png_handle_iCCP()
1469 png_free_data(png_ptr, info_ptr, in png_handle_iCCP()
1473 png_malloc_base(png_ptr, in png_handle_iCCP()
1482 png_ptr->read_buffer = NULL; /*steal*/ in png_handle_iCCP()
1489 png_ptr->colorspace.flags |= in png_handle_iCCP()
1501 png_colorspace_sync(png_ptr, info_ptr); in png_handle_iCCP()
1505 png_ptr->zowner = 0; in png_handle_iCCP()
1514 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1521 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1535 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1538 png_ptr->zowner = 0; in png_handle_iCCP()
1542 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1558 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1560 png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; in png_handle_iCCP()
1561 png_colorspace_sync(png_ptr, info_ptr); in png_handle_iCCP()
1563 png_chunk_benign_error(png_ptr, errmsg); in png_handle_iCCP()
1569 png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sPLT() argument
1584 if (png_ptr->user_chunk_cache_max != 0) in png_handle_sPLT()
1586 if (png_ptr->user_chunk_cache_max == 1) in png_handle_sPLT()
1588 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1592 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_sPLT()
1594 png_warning(png_ptr, "No space in chunk cache for sPLT"); in png_handle_sPLT()
1595 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1601 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_sPLT()
1602 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sPLT()
1604 else if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_sPLT()
1606 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1607 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sPLT()
1614 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1615 png_chunk_benign_error(png_ptr, "too large to fit in memory"); in png_handle_sPLT()
1620 buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); in png_handle_sPLT()
1623 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1624 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_sPLT()
1633 png_crc_read(png_ptr, buffer, length); in png_handle_sPLT()
1635 if (png_crc_finish(png_ptr, skip)) in png_handle_sPLT()
1648 png_warning(png_ptr, "malformed sPLT chunk"); in png_handle_sPLT()
1662 png_warning(png_ptr, "sPLT chunk has bad length"); in png_handle_sPLT()
1671 png_warning(png_ptr, "sPLT chunk too long"); in png_handle_sPLT()
1678 png_ptr, new_palette.nentries * (sizeof (png_sPLT_entry))); in png_handle_sPLT()
1682 png_warning(png_ptr, "sPLT chunk requires too much memory"); in png_handle_sPLT()
1738 png_set_sPLT(png_ptr, info_ptr, &new_palette, 1); in png_handle_sPLT()
1740 png_free(png_ptr, new_palette.entries); in png_handle_sPLT()
1746 png_handle_tRNS(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_tRNS() argument
1752 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_tRNS()
1753 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_tRNS()
1755 else if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_tRNS()
1757 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1758 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_tRNS()
1764 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1765 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_tRNS()
1769 if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) in png_handle_tRNS()
1775 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1776 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tRNS()
1780 png_crc_read(png_ptr, buf, 2); in png_handle_tRNS()
1781 png_ptr->num_trans = 1; in png_handle_tRNS()
1782 png_ptr->trans_color.gray = png_get_uint_16(buf); in png_handle_tRNS()
1785 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) in png_handle_tRNS()
1791 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1792 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tRNS()
1796 png_crc_read(png_ptr, buf, length); in png_handle_tRNS()
1797 png_ptr->num_trans = 1; in png_handle_tRNS()
1798 png_ptr->trans_color.red = png_get_uint_16(buf); in png_handle_tRNS()
1799 png_ptr->trans_color.green = png_get_uint_16(buf + 2); in png_handle_tRNS()
1800 png_ptr->trans_color.blue = png_get_uint_16(buf + 4); in png_handle_tRNS()
1803 else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_tRNS()
1805 if (!(png_ptr->mode & PNG_HAVE_PLTE)) in png_handle_tRNS()
1808 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1809 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_tRNS()
1813 if (length > png_ptr->num_palette || length > PNG_MAX_PALETTE_LENGTH || in png_handle_tRNS()
1816 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1817 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tRNS()
1821 png_crc_read(png_ptr, readbuf, length); in png_handle_tRNS()
1822 png_ptr->num_trans = (png_uint_16)length; in png_handle_tRNS()
1827 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1828 png_chunk_benign_error(png_ptr, "invalid with alpha channel"); in png_handle_tRNS()
1832 if (png_crc_finish(png_ptr, 0)) in png_handle_tRNS()
1834 png_ptr->num_trans = 0; in png_handle_tRNS()
1842 png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans, in png_handle_tRNS()
1843 &(png_ptr->trans_color)); in png_handle_tRNS()
1849 png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_bKGD() argument
1857 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_bKGD()
1858 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_bKGD()
1860 else if ((png_ptr->mode & PNG_HAVE_IDAT) || in png_handle_bKGD()
1861 (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && in png_handle_bKGD()
1862 !(png_ptr->mode & PNG_HAVE_PLTE))) in png_handle_bKGD()
1864 png_crc_finish(png_ptr, length); in png_handle_bKGD()
1865 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_bKGD()
1871 png_crc_finish(png_ptr, length); in png_handle_bKGD()
1872 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_bKGD()
1876 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_bKGD()
1879 else if (png_ptr->color_type & PNG_COLOR_MASK_COLOR) in png_handle_bKGD()
1887 png_crc_finish(png_ptr, length); in png_handle_bKGD()
1888 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_bKGD()
1892 png_crc_read(png_ptr, buf, truelen); in png_handle_bKGD()
1894 if (png_crc_finish(png_ptr, 0)) in png_handle_bKGD()
1902 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_bKGD()
1910 png_chunk_benign_error(png_ptr, "invalid index"); in png_handle_bKGD()
1914 background.red = (png_uint_16)png_ptr->palette[buf[0]].red; in png_handle_bKGD()
1915 background.green = (png_uint_16)png_ptr->palette[buf[0]].green; in png_handle_bKGD()
1916 background.blue = (png_uint_16)png_ptr->palette[buf[0]].blue; in png_handle_bKGD()
1925 else if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR)) /* GRAY */ in png_handle_bKGD()
1943 png_set_bKGD(png_ptr, info_ptr, &background); in png_handle_bKGD()
1949 png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_hIST() argument
1956 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_hIST()
1957 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_hIST()
1959 else if ((png_ptr->mode & PNG_HAVE_IDAT) || !(png_ptr->mode & PNG_HAVE_PLTE)) in png_handle_hIST()
1961 png_crc_finish(png_ptr, length); in png_handle_hIST()
1962 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_hIST()
1968 png_crc_finish(png_ptr, length); in png_handle_hIST()
1969 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_hIST()
1975 if (num != png_ptr->num_palette || num > PNG_MAX_PALETTE_LENGTH) in png_handle_hIST()
1977 png_crc_finish(png_ptr, length); in png_handle_hIST()
1978 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_hIST()
1986 png_crc_read(png_ptr, buf, 2); in png_handle_hIST()
1990 if (png_crc_finish(png_ptr, 0)) in png_handle_hIST()
1993 png_set_hIST(png_ptr, info_ptr, readbuf); in png_handle_hIST()
1999 png_handle_pHYs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_pHYs() argument
2007 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_pHYs()
2008 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_pHYs()
2010 else if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_pHYs()
2012 png_crc_finish(png_ptr, length); in png_handle_pHYs()
2013 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_pHYs()
2019 png_crc_finish(png_ptr, length); in png_handle_pHYs()
2020 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_pHYs()
2026 png_crc_finish(png_ptr, length); in png_handle_pHYs()
2027 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_pHYs()
2031 png_crc_read(png_ptr, buf, 9); in png_handle_pHYs()
2033 if (png_crc_finish(png_ptr, 0)) in png_handle_pHYs()
2039 png_set_pHYs(png_ptr, info_ptr, res_x, res_y, unit_type); in png_handle_pHYs()
2045 png_handle_oFFs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_oFFs() argument
2053 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_oFFs()
2054 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_oFFs()
2056 else if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_oFFs()
2058 png_crc_finish(png_ptr, length); in png_handle_oFFs()
2059 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_oFFs()
2065 png_crc_finish(png_ptr, length); in png_handle_oFFs()
2066 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_oFFs()
2072 png_crc_finish(png_ptr, length); in png_handle_oFFs()
2073 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_oFFs()
2077 png_crc_read(png_ptr, buf, 9); in png_handle_oFFs()
2079 if (png_crc_finish(png_ptr, 0)) in png_handle_oFFs()
2085 png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, unit_type); in png_handle_oFFs()
2092 png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_pCAL() argument
2102 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_pCAL()
2103 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_pCAL()
2105 else if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_pCAL()
2107 png_crc_finish(png_ptr, length); in png_handle_pCAL()
2108 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_pCAL()
2114 png_crc_finish(png_ptr, length); in png_handle_pCAL()
2115 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_pCAL()
2122 buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); in png_handle_pCAL()
2126 png_crc_finish(png_ptr, length); in png_handle_pCAL()
2127 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_pCAL()
2131 png_crc_read(png_ptr, buffer, length); in png_handle_pCAL()
2133 if (png_crc_finish(png_ptr, 0)) in png_handle_pCAL()
2149 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_pCAL()
2169 png_chunk_benign_error(png_ptr, "invalid parameter count"); in png_handle_pCAL()
2175 png_chunk_benign_error(png_ptr, "unrecognized equation type"); in png_handle_pCAL()
2183 params = png_voidcast(png_charpp, png_malloc_warn(png_ptr, in png_handle_pCAL()
2188 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_pCAL()
2205 png_free(png_ptr, params); in png_handle_pCAL()
2206 png_chunk_benign_error(png_ptr, "invalid data"); in png_handle_pCAL()
2211 png_set_pCAL(png_ptr, info_ptr, (png_charp)buffer, X0, X1, type, nparams, in png_handle_pCAL()
2214 png_free(png_ptr, params); in png_handle_pCAL()
2221 png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sCAL() argument
2229 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_sCAL()
2230 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sCAL()
2232 else if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_sCAL()
2234 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2235 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sCAL()
2241 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2242 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_sCAL()
2249 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2250 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sCAL()
2257 buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); in png_handle_sCAL()
2261 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_sCAL()
2262 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2266 png_crc_read(png_ptr, buffer, length); in png_handle_sCAL()
2269 if (png_crc_finish(png_ptr, 0)) in png_handle_sCAL()
2275 png_chunk_benign_error(png_ptr, "invalid unit"); in png_handle_sCAL()
2287 png_chunk_benign_error(png_ptr, "bad width format"); in png_handle_sCAL()
2290 png_chunk_benign_error(png_ptr, "non-positive width"); in png_handle_sCAL()
2299 png_chunk_benign_error(png_ptr, "bad height format"); in png_handle_sCAL()
2302 png_chunk_benign_error(png_ptr, "non-positive height"); in png_handle_sCAL()
2306 png_set_sCAL_s(png_ptr, info_ptr, buffer[0], in png_handle_sCAL()
2314 png_handle_tIME(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_tIME() argument
2321 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_tIME()
2322 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_tIME()
2326 png_crc_finish(png_ptr, length); in png_handle_tIME()
2327 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_tIME()
2331 if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_tIME()
2332 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_tIME()
2336 png_crc_finish(png_ptr, length); in png_handle_tIME()
2337 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tIME()
2341 png_crc_read(png_ptr, buf, 7); in png_handle_tIME()
2343 if (png_crc_finish(png_ptr, 0)) in png_handle_tIME()
2353 png_set_tIME(png_ptr, info_ptr, &mod_time); in png_handle_tIME()
2360 png_handle_tEXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_tEXt() argument
2371 if (png_ptr->user_chunk_cache_max != 0) in png_handle_tEXt()
2373 if (png_ptr->user_chunk_cache_max == 1) in png_handle_tEXt()
2375 png_crc_finish(png_ptr, length); in png_handle_tEXt()
2379 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_tEXt()
2381 png_crc_finish(png_ptr, length); in png_handle_tEXt()
2382 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_tEXt()
2388 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_tEXt()
2389 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_tEXt()
2391 if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_tEXt()
2392 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_tEXt()
2397 png_crc_finish(png_ptr, length); in png_handle_tEXt()
2398 png_chunk_benign_error(png_ptr, "too large to fit in memory"); in png_handle_tEXt()
2403 buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/); in png_handle_tEXt()
2407 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_tEXt()
2411 png_crc_read(png_ptr, buffer, length); in png_handle_tEXt()
2413 if (png_crc_finish(png_ptr, skip)) in png_handle_tEXt()
2433 if (png_set_text_2(png_ptr, info_ptr, &text_info, 1)) in png_handle_tEXt()
2434 png_warning(png_ptr, "Insufficient memory to process text chunk"); in png_handle_tEXt()
2441 png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_zTXt() argument
2450 if (png_ptr->user_chunk_cache_max != 0) in png_handle_zTXt()
2452 if (png_ptr->user_chunk_cache_max == 1) in png_handle_zTXt()
2454 png_crc_finish(png_ptr, length); in png_handle_zTXt()
2458 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_zTXt()
2460 png_crc_finish(png_ptr, length); in png_handle_zTXt()
2461 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_zTXt()
2467 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_zTXt()
2468 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_zTXt()
2470 if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_zTXt()
2471 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_zTXt()
2473 buffer = png_read_buffer(png_ptr, length, 2/*silent*/); in png_handle_zTXt()
2477 png_crc_finish(png_ptr, length); in png_handle_zTXt()
2478 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_zTXt()
2482 png_crc_read(png_ptr, buffer, length); in png_handle_zTXt()
2484 if (png_crc_finish(png_ptr, 0)) in png_handle_zTXt()
2514 if (png_decompress_chunk(png_ptr, length, keyword_length+2, in png_handle_zTXt()
2523 buffer = png_ptr->read_buffer; in png_handle_zTXt()
2534 if (png_set_text_2(png_ptr, info_ptr, &text, 1)) in png_handle_zTXt()
2539 errmsg = png_ptr->zstream.msg; in png_handle_zTXt()
2543 png_chunk_benign_error(png_ptr, errmsg); in png_handle_zTXt()
2550 png_handle_iTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_iTXt() argument
2559 if (png_ptr->user_chunk_cache_max != 0) in png_handle_iTXt()
2561 if (png_ptr->user_chunk_cache_max == 1) in png_handle_iTXt()
2563 png_crc_finish(png_ptr, length); in png_handle_iTXt()
2567 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_iTXt()
2569 png_crc_finish(png_ptr, length); in png_handle_iTXt()
2570 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_iTXt()
2576 if (!(png_ptr->mode & PNG_HAVE_IHDR)) in png_handle_iTXt()
2577 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_iTXt()
2579 if (png_ptr->mode & PNG_HAVE_IDAT) in png_handle_iTXt()
2580 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_iTXt()
2582 buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/); in png_handle_iTXt()
2586 png_crc_finish(png_ptr, length); in png_handle_iTXt()
2587 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_iTXt()
2591 png_crc_read(png_ptr, buffer, length); in png_handle_iTXt()
2593 if (png_crc_finish(png_ptr, 0)) in png_handle_iTXt()
2654 if (png_decompress_chunk(png_ptr, length, prefix_length, in png_handle_iTXt()
2656 buffer = png_ptr->read_buffer; in png_handle_iTXt()
2659 errmsg = png_ptr->zstream.msg; in png_handle_iTXt()
2684 if (png_set_text_2(png_ptr, info_ptr, &text, 1)) in png_handle_iTXt()
2693 png_chunk_benign_error(png_ptr, errmsg); in png_handle_iTXt()
2700 png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length) in png_cache_unknown_chunk() argument
2704 if (png_ptr->unknown_chunk.data != NULL) in png_cache_unknown_chunk()
2706 png_free(png_ptr, png_ptr->unknown_chunk.data); in png_cache_unknown_chunk()
2707 png_ptr->unknown_chunk.data = NULL; in png_cache_unknown_chunk()
2711 if (png_ptr->user_chunk_malloc_max > 0 && in png_cache_unknown_chunk()
2712 png_ptr->user_chunk_malloc_max < limit) in png_cache_unknown_chunk()
2713 limit = png_ptr->user_chunk_malloc_max; in png_cache_unknown_chunk()
2722 PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name); in png_cache_unknown_chunk()
2724 png_ptr->unknown_chunk.size = (png_size_t)length/*SAFE*/; in png_cache_unknown_chunk()
2726 png_ptr->unknown_chunk.location = (png_byte)png_ptr->mode/*SAFE*/; in png_cache_unknown_chunk()
2729 png_ptr->unknown_chunk.data = NULL; in png_cache_unknown_chunk()
2734 png_ptr->unknown_chunk.data = png_voidcast(png_bytep, in png_cache_unknown_chunk()
2735 png_malloc_warn(png_ptr, length)); in png_cache_unknown_chunk()
2739 if (png_ptr->unknown_chunk.data == NULL && length > 0) in png_cache_unknown_chunk()
2742 png_crc_finish(png_ptr, length); in png_cache_unknown_chunk()
2743 png_chunk_benign_error(png_ptr, "unknown chunk exceeds memory limits"); in png_cache_unknown_chunk()
2750 png_crc_read(png_ptr, png_ptr->unknown_chunk.data, length); in png_cache_unknown_chunk()
2751 png_crc_finish(png_ptr, 0); in png_cache_unknown_chunk()
2759 png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr, in png_handle_unknown() argument
2780 keep = png_chunk_unknown_handling(png_ptr, png_ptr->chunk_name); in png_handle_unknown()
2792 if (png_ptr->read_user_chunk_fn != NULL) in png_handle_unknown()
2794 if (png_cache_unknown_chunk(png_ptr, length)) in png_handle_unknown()
2797 int ret = (*(png_ptr->read_user_chunk_fn))(png_ptr, in png_handle_unknown()
2798 &png_ptr->unknown_chunk); in png_handle_unknown()
2810 png_chunk_error(png_ptr, "error in user chunk"); in png_handle_unknown()
2828 if (png_ptr->unknown_default < PNG_HANDLE_CHUNK_IF_SAFE) in png_handle_unknown()
2830 png_chunk_warning(png_ptr, "Saving unknown chunk:"); in png_handle_unknown()
2831 png_app_warning(png_ptr, in png_handle_unknown()
2865 keep = png_ptr->unknown_default; in png_handle_unknown()
2869 PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))) in png_handle_unknown()
2871 if (!png_cache_unknown_chunk(png_ptr, length)) in png_handle_unknown()
2876 png_crc_finish(png_ptr, length); in png_handle_unknown()
2891 png_app_error(png_ptr, "no unknown chunk support available"); in png_handle_unknown()
2893 png_crc_finish(png_ptr, length); in png_handle_unknown()
2903 PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))) in png_handle_unknown()
2906 switch (png_ptr->user_chunk_cache_max) in png_handle_unknown()
2909 png_ptr->user_chunk_cache_max = 1; in png_handle_unknown()
2910 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_unknown()
2919 --(png_ptr->user_chunk_cache_max); in png_handle_unknown()
2926 png_set_unknown_chunks(png_ptr, info_ptr, in png_handle_unknown()
2927 &png_ptr->unknown_chunk, 1); in png_handle_unknown()
2943 if (png_ptr->unknown_chunk.data != NULL) in png_handle_unknown()
2944 png_free(png_ptr, png_ptr->unknown_chunk.data); in png_handle_unknown()
2945 png_ptr->unknown_chunk.data = NULL; in png_handle_unknown()
2949 png_crc_finish(png_ptr, length); in png_handle_unknown()
2955 if (!handled && PNG_CHUNK_CRITICAL(png_ptr->chunk_name)) in png_handle_unknown()
2956 png_chunk_error(png_ptr, "unhandled critical chunk"); in png_handle_unknown()
2972 png_check_chunk_name(png_structrp png_ptr, png_uint_32 chunk_name) in png_check_chunk_name() argument
2983 png_chunk_error(png_ptr, "invalid chunk type"); in png_check_chunk_name()
2997 png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display) in png_combine_row() argument
2999 unsigned int pixel_depth = png_ptr->transformed_pixel_depth; in png_combine_row()
3000 png_const_bytep sp = png_ptr->row_buf + 1; in png_combine_row()
3001 png_uint_32 row_width = png_ptr->width; in png_combine_row()
3002 unsigned int pass = png_ptr->pass; in png_combine_row()
3013 png_error(png_ptr, "internal row logic error"); in png_combine_row()
3019 if (png_ptr->info_rowbytes != 0 && png_ptr->info_rowbytes != in png_combine_row()
3021 png_error(png_ptr, "internal row size calculation error"); in png_combine_row()
3025 png_error(png_ptr, "internal row width error"); in png_combine_row()
3038 if (png_ptr->transformations & PNG_PACKSWAP) /* little-endian byte */ in png_combine_row()
3054 if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE) && in png_combine_row()
3200 if (png_ptr->transformations & PNG_PACKSWAP) in png_combine_row()
3246 png_error(png_ptr, "invalid user transform pixel depth"); in png_combine_row()
3932 png_read_IDAT_data(png_structrp png_ptr, png_bytep output, in png_read_IDAT_data() argument
3936 png_ptr->zstream.next_out = output; in png_read_IDAT_data()
3937 png_ptr->zstream.avail_out = 0; /* safety: set below */ in png_read_IDAT_data()
3947 if (png_ptr->zstream.avail_in == 0) in png_read_IDAT_data()
3952 while (png_ptr->idat_size == 0) in png_read_IDAT_data()
3954 png_crc_finish(png_ptr, 0); in png_read_IDAT_data()
3956 png_ptr->idat_size = png_read_chunk_header(png_ptr); in png_read_IDAT_data()
3960 if (png_ptr->chunk_name != png_IDAT) in png_read_IDAT_data()
3961 png_error(png_ptr, "Not enough image data"); in png_read_IDAT_data()
3964 avail_in = png_ptr->IDAT_read_size; in png_read_IDAT_data()
3966 if (avail_in > png_ptr->idat_size) in png_read_IDAT_data()
3967 avail_in = (uInt)png_ptr->idat_size; in png_read_IDAT_data()
3974 buffer = png_read_buffer(png_ptr, avail_in, 0/*error*/); in png_read_IDAT_data()
3976 png_crc_read(png_ptr, buffer, avail_in); in png_read_IDAT_data()
3977 png_ptr->idat_size -= avail_in; in png_read_IDAT_data()
3979 png_ptr->zstream.next_in = buffer; in png_read_IDAT_data()
3980 png_ptr->zstream.avail_in = avail_in; in png_read_IDAT_data()
3992 png_ptr->zstream.avail_out = out; in png_read_IDAT_data()
3997 png_ptr->zstream.next_out = tmpbuf; in png_read_IDAT_data()
3998 png_ptr->zstream.avail_out = (sizeof tmpbuf); in png_read_IDAT_data()
4008 ret = inflate(&png_ptr->zstream, Z_NO_FLUSH); in png_read_IDAT_data()
4012 avail_out += png_ptr->zstream.avail_out; in png_read_IDAT_data()
4015 avail_out += (sizeof tmpbuf) - png_ptr->zstream.avail_out; in png_read_IDAT_data()
4017 png_ptr->zstream.avail_out = 0; in png_read_IDAT_data()
4022 png_ptr->zstream.next_out = NULL; in png_read_IDAT_data()
4024 png_ptr->mode |= PNG_AFTER_IDAT; in png_read_IDAT_data()
4025 png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; in png_read_IDAT_data()
4027 if (png_ptr->zstream.avail_in > 0 || png_ptr->idat_size > 0) in png_read_IDAT_data()
4028 png_chunk_benign_error(png_ptr, "Extra compressed data"); in png_read_IDAT_data()
4034 png_zstream_error(png_ptr, ret); in png_read_IDAT_data()
4037 png_chunk_error(png_ptr, png_ptr->zstream.msg); in png_read_IDAT_data()
4041 png_chunk_benign_error(png_ptr, png_ptr->zstream.msg); in png_read_IDAT_data()
4053 png_error(png_ptr, "Not enough image data"); in png_read_IDAT_data()
4056 png_chunk_benign_error(png_ptr, "Too much image data"); in png_read_IDAT_data()
4061 png_read_finish_IDAT(png_structrp png_ptr) in png_read_finish_IDAT() argument
4068 if (!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED)) in png_read_finish_IDAT()
4074 png_read_IDAT_data(png_ptr, NULL, 0); in png_read_finish_IDAT()
4075 png_ptr->zstream.next_out = NULL; /* safety */ in png_read_finish_IDAT()
4080 if (!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED)) in png_read_finish_IDAT()
4082 png_ptr->mode |= PNG_AFTER_IDAT; in png_read_finish_IDAT()
4083 png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; in png_read_finish_IDAT()
4090 if (png_ptr->zowner == png_IDAT) in png_read_finish_IDAT()
4093 png_ptr->zstream.next_in = NULL; in png_read_finish_IDAT()
4094 png_ptr->zstream.avail_in = 0; in png_read_finish_IDAT()
4097 png_ptr->zowner = 0; in png_read_finish_IDAT()
4104 (void)png_crc_finish(png_ptr, png_ptr->idat_size); in png_read_finish_IDAT()
4109 png_read_finish_row(png_structrp png_ptr) in png_read_finish_row() argument
4128 png_ptr->row_number++; in png_read_finish_row()
4129 if (png_ptr->row_number < png_ptr->num_rows) in png_read_finish_row()
4133 if (png_ptr->interlaced) in png_read_finish_row()
4135 png_ptr->row_number = 0; in png_read_finish_row()
4140 memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1); in png_read_finish_row()
4144 png_ptr->pass++; in png_read_finish_row()
4146 if (png_ptr->pass >= 7) in png_read_finish_row()
4149 png_ptr->iwidth = (png_ptr->width + in png_read_finish_row()
4150 png_pass_inc[png_ptr->pass] - 1 - in png_read_finish_row()
4151 png_pass_start[png_ptr->pass]) / in png_read_finish_row()
4152 png_pass_inc[png_ptr->pass]; in png_read_finish_row()
4154 if (!(png_ptr->transformations & PNG_INTERLACE)) in png_read_finish_row()
4156 png_ptr->num_rows = (png_ptr->height + in png_read_finish_row()
4157 png_pass_yinc[png_ptr->pass] - 1 - in png_read_finish_row()
4158 png_pass_ystart[png_ptr->pass]) / in png_read_finish_row()
4159 png_pass_yinc[png_ptr->pass]; in png_read_finish_row()
4165 } while (png_ptr->num_rows == 0 || png_ptr->iwidth == 0); in png_read_finish_row()
4167 if (png_ptr->pass < 7) in png_read_finish_row()
4173 png_read_finish_IDAT(png_ptr); in png_read_finish_row()
4178 png_read_start_row(png_structrp png_ptr) in png_read_start_row() argument
4202 png_init_read_transformations(png_ptr); in png_read_start_row()
4205 if (png_ptr->interlaced) in png_read_start_row()
4207 if (!(png_ptr->transformations & PNG_INTERLACE)) in png_read_start_row()
4208 png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 - in png_read_start_row()
4212 png_ptr->num_rows = png_ptr->height; in png_read_start_row()
4214 png_ptr->iwidth = (png_ptr->width + in png_read_start_row()
4215 png_pass_inc[png_ptr->pass] - 1 - in png_read_start_row()
4216 png_pass_start[png_ptr->pass]) / in png_read_start_row()
4217 png_pass_inc[png_ptr->pass]; in png_read_start_row()
4223 png_ptr->num_rows = png_ptr->height; in png_read_start_row()
4224 png_ptr->iwidth = png_ptr->width; in png_read_start_row()
4227 max_pixel_depth = png_ptr->pixel_depth; in png_read_start_row()
4240 if ((png_ptr->transformations & PNG_PACK) && png_ptr->bit_depth < 8) in png_read_start_row()
4245 if (png_ptr->transformations & PNG_EXPAND) in png_read_start_row()
4247 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_read_start_row()
4249 if (png_ptr->num_trans) in png_read_start_row()
4256 else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) in png_read_start_row()
4261 if (png_ptr->num_trans) in png_read_start_row()
4265 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) in png_read_start_row()
4267 if (png_ptr->num_trans) in png_read_start_row()
4277 if (png_ptr->transformations & PNG_EXPAND_16) in png_read_start_row()
4283 if (png_ptr->transformations & PNG_EXPAND) in png_read_start_row()
4285 if (png_ptr->bit_depth < 16) in png_read_start_row()
4290 png_ptr->transformations &= ~PNG_EXPAND_16; in png_read_start_row()
4295 if (png_ptr->transformations & (PNG_FILLER)) in png_read_start_row()
4297 if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) in png_read_start_row()
4306 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB || in png_read_start_row()
4307 png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_read_start_row()
4319 if (png_ptr->transformations & PNG_GRAY_TO_RGB) in png_read_start_row()
4323 (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND)) || in png_read_start_row()
4326 (png_ptr->transformations & (PNG_FILLER)) || in png_read_start_row()
4328 png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) in png_read_start_row()
4341 if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) in png_read_start_row()
4348 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) in png_read_start_row()
4359 if (png_ptr->transformations & PNG_USER_TRANSFORM) in png_read_start_row()
4361 int user_pixel_depth = png_ptr->user_transform_depth * in png_read_start_row()
4362 png_ptr->user_transform_channels; in png_read_start_row()
4372 png_ptr->maximum_pixel_depth = (png_byte)max_pixel_depth; in png_read_start_row()
4373 png_ptr->transformed_pixel_depth = 0; /* calculated on demand */ in png_read_start_row()
4378 row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7)); in png_read_start_row()
4387 png_error(png_ptr, "This image requires a row greater than 64KB"); in png_read_start_row()
4390 if (row_bytes + 48 > png_ptr->old_big_row_buf_size) in png_read_start_row()
4392 png_free(png_ptr, png_ptr->big_row_buf); in png_read_start_row()
4393 png_free(png_ptr, png_ptr->big_prev_row); in png_read_start_row()
4395 if (png_ptr->interlaced) in png_read_start_row()
4396 png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr, in png_read_start_row()
4400 png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48); in png_read_start_row()
4402 png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48); in png_read_start_row()
4413 png_bytep temp = png_ptr->big_row_buf + 32; in png_read_start_row()
4415 png_ptr->row_buf = temp - extra - 1/*filter byte*/; in png_read_start_row()
4417 temp = png_ptr->big_prev_row + 32; in png_read_start_row()
4419 png_ptr->prev_row = temp - extra - 1/*filter byte*/; in png_read_start_row()
4424 png_ptr->row_buf = png_ptr->big_row_buf + 31; in png_read_start_row()
4425 png_ptr->prev_row = png_ptr->big_prev_row + 31; in png_read_start_row()
4427 png_ptr->old_big_row_buf_size = row_bytes + 48; in png_read_start_row()
4431 if (png_ptr->rowbytes > 65535) in png_read_start_row()
4432 png_error(png_ptr, "This image requires a row greater than 64KB"); in png_read_start_row()
4435 if (png_ptr->rowbytes > (PNG_SIZE_MAX - 1)) in png_read_start_row()
4436 png_error(png_ptr, "Row has too many bytes to allocate in memory"); in png_read_start_row()
4438 memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1); in png_read_start_row()
4440 png_debug1(3, "width = %u,", png_ptr->width); in png_read_start_row()
4441 png_debug1(3, "height = %u,", png_ptr->height); in png_read_start_row()
4442 png_debug1(3, "iwidth = %u,", png_ptr->iwidth); in png_read_start_row()
4443 png_debug1(3, "num_rows = %u,", png_ptr->num_rows); in png_read_start_row()
4444 png_debug1(3, "rowbytes = %lu,", (unsigned long)png_ptr->rowbytes); in png_read_start_row()
4446 (unsigned long)PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1); in png_read_start_row()
4452 if (png_ptr->read_buffer) in png_read_start_row()
4454 png_bytep buffer = png_ptr->read_buffer; in png_read_start_row()
4456 png_ptr->read_buffer_size = 0; in png_read_start_row()
4457 png_ptr->read_buffer = NULL; in png_read_start_row()
4458 png_free(png_ptr, buffer); in png_read_start_row()
4466 if (png_inflate_claim(png_ptr, png_IDAT) != Z_OK) in png_read_start_row()
4467 png_error(png_ptr, png_ptr->zstream.msg); in png_read_start_row()
4469 png_ptr->flags |= PNG_FLAG_ROW_INIT; in png_read_start_row()