Lines Matching refs:png_ptr
22 png_get_uint_31(png_const_structrp png_ptr, png_const_bytep buf) in png_get_uint_31() argument
27 png_error(png_ptr, "PNG unsigned integer out of range"); in png_get_uint_31()
41 png_get_fixed_point(png_structrp png_ptr, png_const_bytep buf) in png_get_fixed_point() argument
49 if (png_ptr != NULL) in png_get_fixed_point()
50 png_warning(png_ptr, "PNG fixed point integer out of range"); in png_get_fixed_point()
121 png_read_sig(png_structrp png_ptr, png_inforp info_ptr) in png_read_sig() argument
126 if (png_ptr->sig_bytes >= 8) in png_read_sig()
129 num_checked = png_ptr->sig_bytes; in png_read_sig()
133 png_ptr->io_state = PNG_IO_READING | PNG_IO_SIGNATURE; in png_read_sig()
137 png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check); in png_read_sig()
138 png_ptr->sig_bytes = 8; in png_read_sig()
144 png_error(png_ptr, "Not a PNG file"); in png_read_sig()
146 png_error(png_ptr, "PNG file corrupted by ASCII conversion"); in png_read_sig()
149 png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE; in png_read_sig()
156 png_read_chunk_header(png_structrp png_ptr) in png_read_chunk_header() argument
162 png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_HDR; in png_read_chunk_header()
168 png_read_data(png_ptr, buf, 8); in png_read_chunk_header()
169 length = png_get_uint_31(png_ptr, buf); in png_read_chunk_header()
172 png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(buf+4); in png_read_chunk_header()
175 (unsigned long)png_ptr->chunk_name, (unsigned long)length); in png_read_chunk_header()
178 png_reset_crc(png_ptr); in png_read_chunk_header()
179 png_calculate_crc(png_ptr, buf + 4, 4); in png_read_chunk_header()
182 png_check_chunk_name(png_ptr, png_ptr->chunk_name); in png_read_chunk_header()
185 png_check_chunk_length(png_ptr, length); in png_read_chunk_header()
188 png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA; in png_read_chunk_header()
196 png_crc_read(png_structrp png_ptr, png_bytep buf, png_uint_32 length) in png_crc_read() argument
198 if (png_ptr == NULL) in png_crc_read()
201 png_read_data(png_ptr, buf, length); in png_crc_read()
202 png_calculate_crc(png_ptr, buf, length); in png_crc_read()
211 png_crc_finish(png_structrp png_ptr, png_uint_32 skip) in png_crc_finish() argument
226 png_crc_read(png_ptr, tmpbuf, len); in png_crc_finish()
229 if (png_crc_error(png_ptr) != 0) in png_crc_finish()
231 if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0 ? in png_crc_finish()
232 (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) == 0 : in png_crc_finish()
233 (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE) != 0) in png_crc_finish()
235 png_chunk_warning(png_ptr, "CRC error"); in png_crc_finish()
239 png_chunk_error(png_ptr, "CRC error"); in png_crc_finish()
251 png_crc_error(png_structrp png_ptr) in png_crc_error() argument
257 if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0) in png_crc_error()
259 if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) == in png_crc_error()
266 if ((png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) != 0) in png_crc_error()
271 png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC; in png_crc_error()
275 png_read_data(png_ptr, crc_bytes, 4); in png_crc_error()
280 return ((int)(crc != png_ptr->crc)); in png_crc_error()
298 png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn) in png_read_buffer() argument
300 png_bytep buffer = png_ptr->read_buffer; in png_read_buffer()
302 if (buffer != NULL && new_size > png_ptr->read_buffer_size) in png_read_buffer()
304 png_ptr->read_buffer = NULL; in png_read_buffer()
305 png_ptr->read_buffer = NULL; in png_read_buffer()
306 png_ptr->read_buffer_size = 0; in png_read_buffer()
307 png_free(png_ptr, buffer); in png_read_buffer()
313 buffer = png_voidcast(png_bytep, png_malloc_base(png_ptr, new_size)); in png_read_buffer()
318 png_ptr->read_buffer = buffer; in png_read_buffer()
319 png_ptr->read_buffer_size = new_size; in png_read_buffer()
325 png_chunk_warning(png_ptr, "insufficient memory to read chunk"); in png_read_buffer()
328 png_chunk_error(png_ptr, "insufficient memory to read chunk"); in png_read_buffer()
342 png_inflate_claim(png_structrp png_ptr, png_uint_32 owner) in png_inflate_claim() argument
344 if (png_ptr->zowner != 0) in png_inflate_claim()
348 PNG_STRING_FROM_CHUNK(msg, png_ptr->zowner); in png_inflate_claim()
355 png_chunk_warning(png_ptr, msg); in png_inflate_claim()
356 png_ptr->zowner = 0; in png_inflate_claim()
358 png_chunk_error(png_ptr, msg); in png_inflate_claim()
381 if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) == in png_inflate_claim()
385 png_ptr->zstream_start = 0; /* fixed window size */ in png_inflate_claim()
390 png_ptr->zstream_start = 1; in png_inflate_claim()
399 png_ptr->zstream.next_in = NULL; in png_inflate_claim()
400 png_ptr->zstream.avail_in = 0; in png_inflate_claim()
401 png_ptr->zstream.next_out = NULL; in png_inflate_claim()
402 png_ptr->zstream.avail_out = 0; in png_inflate_claim()
404 if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) != 0) in png_inflate_claim()
407 ret = inflateReset2(&png_ptr->zstream, window_bits); in png_inflate_claim()
409 ret = inflateReset(&png_ptr->zstream); in png_inflate_claim()
416 ret = inflateInit2(&png_ptr->zstream, window_bits); in png_inflate_claim()
418 ret = inflateInit(&png_ptr->zstream); in png_inflate_claim()
422 png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED; in png_inflate_claim()
427 if (((png_ptr->options >> PNG_IGNORE_ADLER32) & 3) == PNG_OPTION_ON) in png_inflate_claim()
429 ret = inflateValidate(&png_ptr->zstream, 0); in png_inflate_claim()
433 png_ptr->zowner = owner; in png_inflate_claim()
436 png_zstream_error(png_ptr, ret); in png_inflate_claim()
454 png_zlib_inflate(png_structrp png_ptr, int flush) in png_zlib_inflate() argument
456 if (png_ptr->zstream_start && png_ptr->zstream.avail_in > 0) in png_zlib_inflate()
458 if ((*png_ptr->zstream.next_in >> 4) > 7) in png_zlib_inflate()
460 png_ptr->zstream.msg = "invalid window size (libpng)"; in png_zlib_inflate()
464 png_ptr->zstream_start = 0; in png_zlib_inflate()
467 return inflate(&png_ptr->zstream, flush); in png_zlib_inflate()
485 png_inflate(png_structrp png_ptr, png_uint_32 owner, int finish, in png_inflate() argument
489 if (png_ptr->zowner == owner) /* Else not claimed */ in png_inflate()
504 png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input); in png_inflate()
506 png_ptr->zstream.avail_in = 0; in png_inflate()
507 png_ptr->zstream.avail_out = 0; in png_inflate()
513 png_ptr->zstream.next_out = output; in png_inflate()
528 avail_in += png_ptr->zstream.avail_in; /* not consumed last time */ in png_inflate()
536 png_ptr->zstream.avail_in = avail; in png_inflate()
539 avail_out += png_ptr->zstream.avail_out; /* not written last time */ in png_inflate()
548 png_ptr->zstream.next_out = local_buffer; in png_inflate()
556 png_ptr->zstream.avail_out = avail; in png_inflate()
565 ret = PNG_INFLATE(png_ptr, avail_out > 0 ? Z_NO_FLUSH : in png_inflate()
571 png_ptr->zstream.next_out = NULL; in png_inflate()
574 avail_in += png_ptr->zstream.avail_in; in png_inflate()
575 avail_out += png_ptr->zstream.avail_out; in png_inflate()
587 png_zstream_error(png_ptr, ret); in png_inflate()
597 png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed"); in png_inflate()
610 png_decompress_chunk(png_structrp png_ptr, in png_decompress_chunk() argument
625 if (png_ptr->user_chunk_malloc_max > 0 && in png_decompress_chunk()
626 png_ptr->user_chunk_malloc_max < limit) in png_decompress_chunk()
627 limit = png_ptr->user_chunk_malloc_max; in png_decompress_chunk()
643 ret = png_inflate_claim(png_ptr, png_ptr->chunk_name); in png_decompress_chunk()
649 ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/, in png_decompress_chunk()
650 /* input: */ png_ptr->read_buffer + prefix_size, &lzsize, in png_decompress_chunk()
662 if (inflateReset(&png_ptr->zstream) == Z_OK) in png_decompress_chunk()
672 png_bytep text = png_voidcast(png_bytep, png_malloc_base(png_ptr, in png_decompress_chunk()
679 ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/, in png_decompress_chunk()
680 png_ptr->read_buffer + prefix_size, &lzsize, in png_decompress_chunk()
691 memcpy(text, png_ptr->read_buffer, prefix_size); in png_decompress_chunk()
694 png_bytep old_ptr = png_ptr->read_buffer; in png_decompress_chunk()
696 png_ptr->read_buffer = text; in png_decompress_chunk()
697 png_ptr->read_buffer_size = buffer_size; in png_decompress_chunk()
720 png_free(png_ptr, text); in png_decompress_chunk()
727 png_chunk_benign_error(png_ptr, "extra compressed data"); in png_decompress_chunk()
734 png_zstream_error(png_ptr, Z_MEM_ERROR); in png_decompress_chunk()
741 png_zstream_error(png_ptr, ret); in png_decompress_chunk()
750 png_ptr->zowner = 0; in png_decompress_chunk()
762 png_zstream_error(png_ptr, Z_MEM_ERROR); in png_decompress_chunk()
774 png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size, in png_inflate_read() argument
778 if (png_ptr->zowner == png_ptr->chunk_name) in png_inflate_read()
783 png_ptr->zstream.next_out = next_out; in png_inflate_read()
784 png_ptr->zstream.avail_out = 0; /* set in the loop */ in png_inflate_read()
788 if (png_ptr->zstream.avail_in == 0) in png_inflate_read()
795 png_crc_read(png_ptr, read_buffer, read_size); in png_inflate_read()
797 png_ptr->zstream.next_in = read_buffer; in png_inflate_read()
798 png_ptr->zstream.avail_in = read_size; in png_inflate_read()
801 if (png_ptr->zstream.avail_out == 0) in png_inflate_read()
808 png_ptr->zstream.avail_out = avail; in png_inflate_read()
815 ret = PNG_INFLATE(png_ptr, *chunk_bytes > 0 ? in png_inflate_read()
818 while (ret == Z_OK && (*out_size > 0 || png_ptr->zstream.avail_out > 0)); in png_inflate_read()
820 *out_size += png_ptr->zstream.avail_out; in png_inflate_read()
821 png_ptr->zstream.avail_out = 0; /* Should not be required, but is safe */ in png_inflate_read()
824 png_zstream_error(png_ptr, ret); in png_inflate_read()
830 png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed"); in png_inflate_read()
839 png_handle_IHDR(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_IHDR() argument
848 if ((png_ptr->mode & PNG_HAVE_IHDR) != 0) in png_handle_IHDR()
849 png_chunk_error(png_ptr, "out of place"); in png_handle_IHDR()
853 png_chunk_error(png_ptr, "invalid"); in png_handle_IHDR()
855 png_ptr->mode |= PNG_HAVE_IHDR; in png_handle_IHDR()
857 png_crc_read(png_ptr, buf, 13); in png_handle_IHDR()
858 png_crc_finish(png_ptr, 0); in png_handle_IHDR()
860 width = png_get_uint_31(png_ptr, buf); in png_handle_IHDR()
861 height = png_get_uint_31(png_ptr, buf + 4); in png_handle_IHDR()
869 png_ptr->width = width; in png_handle_IHDR()
870 png_ptr->height = height; in png_handle_IHDR()
871 png_ptr->bit_depth = (png_byte)bit_depth; in png_handle_IHDR()
872 png_ptr->interlaced = (png_byte)interlace_type; in png_handle_IHDR()
873 png_ptr->color_type = (png_byte)color_type; in png_handle_IHDR()
875 png_ptr->filter_type = (png_byte)filter_type; in png_handle_IHDR()
877 png_ptr->compression_type = (png_byte)compression_type; in png_handle_IHDR()
880 switch (png_ptr->color_type) in png_handle_IHDR()
885 png_ptr->channels = 1; in png_handle_IHDR()
889 png_ptr->channels = 3; in png_handle_IHDR()
893 png_ptr->channels = 2; in png_handle_IHDR()
897 png_ptr->channels = 4; in png_handle_IHDR()
902 png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth * png_ptr->channels); in png_handle_IHDR()
903 png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width); in png_handle_IHDR()
904 png_debug1(3, "bit_depth = %d", png_ptr->bit_depth); in png_handle_IHDR()
905 png_debug1(3, "channels = %d", png_ptr->channels); in png_handle_IHDR()
906 png_debug1(3, "rowbytes = %lu", (unsigned long)png_ptr->rowbytes); in png_handle_IHDR()
907 png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, in png_handle_IHDR()
913 png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_PLTE() argument
923 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_PLTE()
924 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_PLTE()
931 else if ((png_ptr->mode & PNG_HAVE_PLTE) != 0) in png_handle_PLTE()
932 png_chunk_error(png_ptr, "duplicate"); in png_handle_PLTE()
934 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_PLTE()
939 png_crc_finish(png_ptr, length); in png_handle_PLTE()
940 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_PLTE()
944 png_ptr->mode |= PNG_HAVE_PLTE; in png_handle_PLTE()
946 if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) in png_handle_PLTE()
948 png_crc_finish(png_ptr, length); in png_handle_PLTE()
949 png_chunk_benign_error(png_ptr, "ignored in grayscale PNG"); in png_handle_PLTE()
954 if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
956 png_crc_finish(png_ptr, length); in png_handle_PLTE()
963 png_crc_finish(png_ptr, length); in png_handle_PLTE()
965 if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
966 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_PLTE()
969 png_chunk_error(png_ptr, "invalid"); in png_handle_PLTE()
982 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
983 max_palette_length = (1 << png_ptr->bit_depth); in png_handle_PLTE()
995 png_crc_read(png_ptr, buf, 3); in png_handle_PLTE()
1005 png_crc_read(png_ptr, buf, 3); in png_handle_PLTE()
1019 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
1022 png_crc_finish(png_ptr, (png_uint_32) (length - (unsigned int)num * 3)); in png_handle_PLTE()
1026 else if (png_crc_error(png_ptr) != 0) /* Only if we have a CRC error */ in png_handle_PLTE()
1037 if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE) == 0) in png_handle_PLTE()
1039 if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) != 0) in png_handle_PLTE()
1043 png_chunk_error(png_ptr, "CRC error"); in png_handle_PLTE()
1047 else if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) == 0) in png_handle_PLTE()
1048 png_chunk_warning(png_ptr, "CRC error"); in png_handle_PLTE()
1060 png_set_PLTE(png_ptr, info_ptr, palette, num); in png_handle_PLTE()
1072 if (png_ptr->num_trans > 0 || in png_handle_PLTE()
1079 png_ptr->num_trans = 0; in png_handle_PLTE()
1084 png_chunk_benign_error(png_ptr, "tRNS must be after"); in png_handle_PLTE()
1090 png_chunk_benign_error(png_ptr, "hIST must be after"); in png_handle_PLTE()
1095 png_chunk_benign_error(png_ptr, "bKGD must be after"); in png_handle_PLTE()
1100 png_handle_IEND(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_IEND() argument
1104 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0 || in png_handle_IEND()
1105 (png_ptr->mode & PNG_HAVE_IDAT) == 0) in png_handle_IEND()
1106 png_chunk_error(png_ptr, "out of place"); in png_handle_IEND()
1108 png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND); in png_handle_IEND()
1110 png_crc_finish(png_ptr, length); in png_handle_IEND()
1113 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_IEND()
1120 png_handle_gAMA(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_gAMA() argument
1127 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_gAMA()
1128 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_gAMA()
1130 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_gAMA()
1132 png_crc_finish(png_ptr, length); in png_handle_gAMA()
1133 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_gAMA()
1139 png_crc_finish(png_ptr, length); in png_handle_gAMA()
1140 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_gAMA()
1144 png_crc_read(png_ptr, buf, 4); in png_handle_gAMA()
1146 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_gAMA()
1151 png_colorspace_set_gamma(png_ptr, &png_ptr->colorspace, igamma); in png_handle_gAMA()
1152 png_colorspace_sync(png_ptr, info_ptr); in png_handle_gAMA()
1158 png_handle_sBIT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sBIT() argument
1166 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_sBIT()
1167 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sBIT()
1169 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_sBIT()
1171 png_crc_finish(png_ptr, length); in png_handle_sBIT()
1172 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sBIT()
1178 png_crc_finish(png_ptr, length); in png_handle_sBIT()
1179 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_sBIT()
1183 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_sBIT()
1191 truelen = png_ptr->channels; in png_handle_sBIT()
1192 sample_depth = png_ptr->bit_depth; in png_handle_sBIT()
1197 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sBIT()
1198 png_crc_finish(png_ptr, length); in png_handle_sBIT()
1203 png_crc_read(png_ptr, buf, truelen); in png_handle_sBIT()
1205 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_sBIT()
1212 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sBIT()
1217 if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) in png_handle_sBIT()
1219 png_ptr->sig_bit.red = buf[0]; in png_handle_sBIT()
1220 png_ptr->sig_bit.green = buf[1]; in png_handle_sBIT()
1221 png_ptr->sig_bit.blue = buf[2]; in png_handle_sBIT()
1222 png_ptr->sig_bit.alpha = buf[3]; in png_handle_sBIT()
1227 png_ptr->sig_bit.gray = buf[0]; in png_handle_sBIT()
1228 png_ptr->sig_bit.red = buf[0]; in png_handle_sBIT()
1229 png_ptr->sig_bit.green = buf[0]; in png_handle_sBIT()
1230 png_ptr->sig_bit.blue = buf[0]; in png_handle_sBIT()
1231 png_ptr->sig_bit.alpha = buf[1]; in png_handle_sBIT()
1234 png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit)); in png_handle_sBIT()
1240 png_handle_cHRM(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_cHRM() argument
1247 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_cHRM()
1248 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_cHRM()
1250 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_cHRM()
1252 png_crc_finish(png_ptr, length); in png_handle_cHRM()
1253 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_cHRM()
1259 png_crc_finish(png_ptr, length); in png_handle_cHRM()
1260 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_cHRM()
1264 png_crc_read(png_ptr, buf, 32); in png_handle_cHRM()
1266 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_cHRM()
1287 png_chunk_benign_error(png_ptr, "invalid values"); in png_handle_cHRM()
1292 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) in png_handle_cHRM()
1295 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) != 0) in png_handle_cHRM()
1297 png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; in png_handle_cHRM()
1298 png_colorspace_sync(png_ptr, info_ptr); in png_handle_cHRM()
1299 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_cHRM()
1303 png_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM; in png_handle_cHRM()
1304 (void)png_colorspace_set_chromaticities(png_ptr, &png_ptr->colorspace, &xy, in png_handle_cHRM()
1306 png_colorspace_sync(png_ptr, info_ptr); in png_handle_cHRM()
1312 png_handle_sRGB(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sRGB() argument
1318 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_sRGB()
1319 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sRGB()
1321 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_sRGB()
1323 png_crc_finish(png_ptr, length); in png_handle_sRGB()
1324 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sRGB()
1330 png_crc_finish(png_ptr, length); in png_handle_sRGB()
1331 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sRGB()
1335 png_crc_read(png_ptr, &intent, 1); in png_handle_sRGB()
1337 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_sRGB()
1341 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) in png_handle_sRGB()
1347 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) != 0) in png_handle_sRGB()
1349 png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; in png_handle_sRGB()
1350 png_colorspace_sync(png_ptr, info_ptr); in png_handle_sRGB()
1351 png_chunk_benign_error(png_ptr, "too many profiles"); in png_handle_sRGB()
1355 (void)png_colorspace_set_sRGB(png_ptr, &png_ptr->colorspace, intent); in png_handle_sRGB()
1356 png_colorspace_sync(png_ptr, info_ptr); in png_handle_sRGB()
1362 png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_iCCP() argument
1370 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_iCCP()
1371 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_iCCP()
1373 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_iCCP()
1375 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1376 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_iCCP()
1392 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1393 png_chunk_benign_error(png_ptr, "too short"); in png_handle_iCCP()
1398 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) in png_handle_iCCP()
1400 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1407 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) == 0) in png_handle_iCCP()
1419 png_crc_read(png_ptr, (png_bytep)keyword, read_length); in png_handle_iCCP()
1427 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1428 png_chunk_benign_error(png_ptr, "too short"); in png_handle_iCCP()
1448 if (png_inflate_claim(png_ptr, png_iCCP) == Z_OK) in png_handle_iCCP()
1454 png_ptr->zstream.next_in = (Bytef*)keyword + (keyword_length+2); in png_handle_iCCP()
1455 png_ptr->zstream.avail_in = read_length; in png_handle_iCCP()
1456 (void)png_inflate_read(png_ptr, local_buffer, in png_handle_iCCP()
1467 if (png_icc_check_length(png_ptr, &png_ptr->colorspace, in png_handle_iCCP()
1473 if (png_icc_check_header(png_ptr, &png_ptr->colorspace, in png_handle_iCCP()
1475 png_ptr->color_type) != 0) in png_handle_iCCP()
1484 png_bytep profile = png_read_buffer(png_ptr, in png_handle_iCCP()
1494 (void)png_inflate_read(png_ptr, local_buffer, in png_handle_iCCP()
1503 if (png_icc_check_tag_table(png_ptr, in png_handle_iCCP()
1504 &png_ptr->colorspace, keyword, profile_length, in png_handle_iCCP()
1513 (void)png_inflate_read(png_ptr, local_buffer, in png_handle_iCCP()
1518 if (length > 0 && !(png_ptr->flags & in png_handle_iCCP()
1530 png_chunk_warning(png_ptr, in png_handle_iCCP()
1534 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1539 png_icc_set_sRGB(png_ptr, in png_handle_iCCP()
1540 &png_ptr->colorspace, profile, in png_handle_iCCP()
1541 png_ptr->zstream.adler); in png_handle_iCCP()
1547 png_free_data(png_ptr, info_ptr, in png_handle_iCCP()
1551 png_malloc_base(png_ptr, in png_handle_iCCP()
1560 png_ptr->read_buffer = NULL; /*steal*/ in png_handle_iCCP()
1567 png_ptr->colorspace.flags |= in png_handle_iCCP()
1579 png_colorspace_sync(png_ptr, info_ptr); in png_handle_iCCP()
1583 png_ptr->zowner = 0; in png_handle_iCCP()
1588 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1593 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1607 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1610 png_ptr->zowner = 0; in png_handle_iCCP()
1614 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1630 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1632 png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; in png_handle_iCCP()
1633 png_colorspace_sync(png_ptr, info_ptr); in png_handle_iCCP()
1635 png_chunk_benign_error(png_ptr, errmsg); in png_handle_iCCP()
1641 png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sPLT() argument
1656 if (png_ptr->user_chunk_cache_max != 0) in png_handle_sPLT()
1658 if (png_ptr->user_chunk_cache_max == 1) in png_handle_sPLT()
1660 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1664 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_sPLT()
1666 png_warning(png_ptr, "No space in chunk cache for sPLT"); in png_handle_sPLT()
1667 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1673 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_sPLT()
1674 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sPLT()
1676 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_sPLT()
1678 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1679 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sPLT()
1686 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1687 png_chunk_benign_error(png_ptr, "too large to fit in memory"); in png_handle_sPLT()
1692 buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); in png_handle_sPLT()
1695 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1696 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_sPLT()
1705 png_crc_read(png_ptr, buffer, length); in png_handle_sPLT()
1707 if (png_crc_finish(png_ptr, skip) != 0) in png_handle_sPLT()
1720 png_warning(png_ptr, "malformed sPLT chunk"); in png_handle_sPLT()
1734 png_warning(png_ptr, "sPLT chunk has bad length"); in png_handle_sPLT()
1743 png_warning(png_ptr, "sPLT chunk too long"); in png_handle_sPLT()
1749 new_palette.entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, in png_handle_sPLT()
1754 png_warning(png_ptr, "sPLT chunk requires too much memory"); in png_handle_sPLT()
1810 png_set_sPLT(png_ptr, info_ptr, &new_palette, 1); in png_handle_sPLT()
1812 png_free(png_ptr, new_palette.entries); in png_handle_sPLT()
1818 png_handle_tRNS(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_tRNS() argument
1824 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_tRNS()
1825 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_tRNS()
1827 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_tRNS()
1829 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1830 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_tRNS()
1836 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1837 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_tRNS()
1841 if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) in png_handle_tRNS()
1847 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1848 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tRNS()
1852 png_crc_read(png_ptr, buf, 2); in png_handle_tRNS()
1853 png_ptr->num_trans = 1; in png_handle_tRNS()
1854 png_ptr->trans_color.gray = png_get_uint_16(buf); in png_handle_tRNS()
1857 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) in png_handle_tRNS()
1863 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1864 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tRNS()
1868 png_crc_read(png_ptr, buf, length); in png_handle_tRNS()
1869 png_ptr->num_trans = 1; in png_handle_tRNS()
1870 png_ptr->trans_color.red = png_get_uint_16(buf); in png_handle_tRNS()
1871 png_ptr->trans_color.green = png_get_uint_16(buf + 2); in png_handle_tRNS()
1872 png_ptr->trans_color.blue = png_get_uint_16(buf + 4); in png_handle_tRNS()
1875 else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_tRNS()
1877 if ((png_ptr->mode & PNG_HAVE_PLTE) == 0) in png_handle_tRNS()
1880 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1881 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_tRNS()
1885 if (length > (unsigned int) png_ptr->num_palette || in png_handle_tRNS()
1889 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1890 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tRNS()
1894 png_crc_read(png_ptr, readbuf, length); in png_handle_tRNS()
1895 png_ptr->num_trans = (png_uint_16)length; in png_handle_tRNS()
1900 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1901 png_chunk_benign_error(png_ptr, "invalid with alpha channel"); in png_handle_tRNS()
1905 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_tRNS()
1907 png_ptr->num_trans = 0; in png_handle_tRNS()
1915 png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans, in png_handle_tRNS()
1916 &(png_ptr->trans_color)); in png_handle_tRNS()
1922 png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_bKGD() argument
1930 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_bKGD()
1931 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_bKGD()
1933 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0 || in png_handle_bKGD()
1934 (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && in png_handle_bKGD()
1935 (png_ptr->mode & PNG_HAVE_PLTE) == 0)) in png_handle_bKGD()
1937 png_crc_finish(png_ptr, length); in png_handle_bKGD()
1938 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_bKGD()
1944 png_crc_finish(png_ptr, length); in png_handle_bKGD()
1945 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_bKGD()
1949 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_bKGD()
1952 else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) in png_handle_bKGD()
1960 png_crc_finish(png_ptr, length); in png_handle_bKGD()
1961 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_bKGD()
1965 png_crc_read(png_ptr, buf, truelen); in png_handle_bKGD()
1967 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_bKGD()
1975 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_bKGD()
1983 png_chunk_benign_error(png_ptr, "invalid index"); in png_handle_bKGD()
1987 background.red = (png_uint_16)png_ptr->palette[buf[0]].red; in png_handle_bKGD()
1988 background.green = (png_uint_16)png_ptr->palette[buf[0]].green; in png_handle_bKGD()
1989 background.blue = (png_uint_16)png_ptr->palette[buf[0]].blue; in png_handle_bKGD()
1998 else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) /* GRAY */ in png_handle_bKGD()
2016 png_set_bKGD(png_ptr, info_ptr, &background); in png_handle_bKGD()
2022 png_handle_eXIf(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_eXIf() argument
2028 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_eXIf()
2029 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_eXIf()
2033 png_crc_finish(png_ptr, length); in png_handle_eXIf()
2034 png_chunk_benign_error(png_ptr, "too short"); in png_handle_eXIf()
2040 png_crc_finish(png_ptr, length); in png_handle_eXIf()
2041 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_eXIf()
2048 png_malloc_warn(png_ptr, length)); in png_handle_eXIf()
2052 png_crc_finish(png_ptr, length); in png_handle_eXIf()
2053 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_eXIf()
2060 png_crc_read(png_ptr, buf, 1); in png_handle_eXIf()
2065 png_crc_finish(png_ptr, length); in png_handle_eXIf()
2066 png_chunk_benign_error(png_ptr, "incorrect byte-order specifier"); in png_handle_eXIf()
2067 png_free(png_ptr, info_ptr->eXIf_buf); in png_handle_eXIf()
2073 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_eXIf()
2076 png_set_eXIf_1(png_ptr, info_ptr, length, info_ptr->eXIf_buf); in png_handle_eXIf()
2078 png_free(png_ptr, info_ptr->eXIf_buf); in png_handle_eXIf()
2085 png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_hIST() argument
2092 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_hIST()
2093 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_hIST()
2095 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0 || in png_handle_hIST()
2096 (png_ptr->mode & PNG_HAVE_PLTE) == 0) in png_handle_hIST()
2098 png_crc_finish(png_ptr, length); in png_handle_hIST()
2099 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_hIST()
2105 png_crc_finish(png_ptr, length); in png_handle_hIST()
2106 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_hIST()
2112 if (num != (unsigned int) png_ptr->num_palette || in png_handle_hIST()
2115 png_crc_finish(png_ptr, length); in png_handle_hIST()
2116 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_hIST()
2124 png_crc_read(png_ptr, buf, 2); in png_handle_hIST()
2128 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_hIST()
2131 png_set_hIST(png_ptr, info_ptr, readbuf); in png_handle_hIST()
2137 png_handle_pHYs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_pHYs() argument
2145 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_pHYs()
2146 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_pHYs()
2148 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_pHYs()
2150 png_crc_finish(png_ptr, length); in png_handle_pHYs()
2151 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_pHYs()
2157 png_crc_finish(png_ptr, length); in png_handle_pHYs()
2158 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_pHYs()
2164 png_crc_finish(png_ptr, length); in png_handle_pHYs()
2165 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_pHYs()
2169 png_crc_read(png_ptr, buf, 9); in png_handle_pHYs()
2171 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_pHYs()
2177 png_set_pHYs(png_ptr, info_ptr, res_x, res_y, unit_type); in png_handle_pHYs()
2183 png_handle_oFFs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_oFFs() argument
2191 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_oFFs()
2192 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_oFFs()
2194 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_oFFs()
2196 png_crc_finish(png_ptr, length); in png_handle_oFFs()
2197 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_oFFs()
2203 png_crc_finish(png_ptr, length); in png_handle_oFFs()
2204 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_oFFs()
2210 png_crc_finish(png_ptr, length); in png_handle_oFFs()
2211 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_oFFs()
2215 png_crc_read(png_ptr, buf, 9); in png_handle_oFFs()
2217 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_oFFs()
2223 png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, unit_type); in png_handle_oFFs()
2230 png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_pCAL() argument
2240 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_pCAL()
2241 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_pCAL()
2243 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_pCAL()
2245 png_crc_finish(png_ptr, length); in png_handle_pCAL()
2246 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_pCAL()
2252 png_crc_finish(png_ptr, length); in png_handle_pCAL()
2253 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_pCAL()
2260 buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); in png_handle_pCAL()
2264 png_crc_finish(png_ptr, length); in png_handle_pCAL()
2265 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_pCAL()
2269 png_crc_read(png_ptr, buffer, length); in png_handle_pCAL()
2271 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_pCAL()
2287 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_pCAL()
2307 png_chunk_benign_error(png_ptr, "invalid parameter count"); in png_handle_pCAL()
2313 png_chunk_benign_error(png_ptr, "unrecognized equation type"); in png_handle_pCAL()
2321 params = png_voidcast(png_charpp, png_malloc_warn(png_ptr, in png_handle_pCAL()
2326 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_pCAL()
2343 png_free(png_ptr, params); in png_handle_pCAL()
2344 png_chunk_benign_error(png_ptr, "invalid data"); in png_handle_pCAL()
2349 png_set_pCAL(png_ptr, info_ptr, (png_charp)buffer, X0, X1, type, nparams, in png_handle_pCAL()
2352 png_free(png_ptr, params); in png_handle_pCAL()
2359 png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sCAL() argument
2367 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_sCAL()
2368 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sCAL()
2370 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_sCAL()
2372 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2373 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sCAL()
2379 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2380 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_sCAL()
2387 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2388 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sCAL()
2395 buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); in png_handle_sCAL()
2399 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_sCAL()
2400 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2404 png_crc_read(png_ptr, buffer, length); in png_handle_sCAL()
2407 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_sCAL()
2413 png_chunk_benign_error(png_ptr, "invalid unit"); in png_handle_sCAL()
2425 png_chunk_benign_error(png_ptr, "bad width format"); in png_handle_sCAL()
2428 png_chunk_benign_error(png_ptr, "non-positive width"); in png_handle_sCAL()
2437 png_chunk_benign_error(png_ptr, "bad height format"); in png_handle_sCAL()
2440 png_chunk_benign_error(png_ptr, "non-positive height"); in png_handle_sCAL()
2444 png_set_sCAL_s(png_ptr, info_ptr, buffer[0], in png_handle_sCAL()
2452 png_handle_tIME(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_tIME() argument
2459 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_tIME()
2460 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_tIME()
2464 png_crc_finish(png_ptr, length); in png_handle_tIME()
2465 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_tIME()
2469 if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_tIME()
2470 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_tIME()
2474 png_crc_finish(png_ptr, length); in png_handle_tIME()
2475 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tIME()
2479 png_crc_read(png_ptr, buf, 7); in png_handle_tIME()
2481 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_tIME()
2491 png_set_tIME(png_ptr, info_ptr, &mod_time); in png_handle_tIME()
2498 png_handle_tEXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_tEXt() argument
2509 if (png_ptr->user_chunk_cache_max != 0) in png_handle_tEXt()
2511 if (png_ptr->user_chunk_cache_max == 1) in png_handle_tEXt()
2513 png_crc_finish(png_ptr, length); in png_handle_tEXt()
2517 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_tEXt()
2519 png_crc_finish(png_ptr, length); in png_handle_tEXt()
2520 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_tEXt()
2526 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_tEXt()
2527 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_tEXt()
2529 if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_tEXt()
2530 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_tEXt()
2535 png_crc_finish(png_ptr, length); in png_handle_tEXt()
2536 png_chunk_benign_error(png_ptr, "too large to fit in memory"); in png_handle_tEXt()
2541 buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/); in png_handle_tEXt()
2545 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_tEXt()
2549 png_crc_read(png_ptr, buffer, length); in png_handle_tEXt()
2551 if (png_crc_finish(png_ptr, skip) != 0) in png_handle_tEXt()
2571 if (png_set_text_2(png_ptr, info_ptr, &text_info, 1) != 0) in png_handle_tEXt()
2572 png_warning(png_ptr, "Insufficient memory to process text chunk"); in png_handle_tEXt()
2579 png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_zTXt() argument
2588 if (png_ptr->user_chunk_cache_max != 0) in png_handle_zTXt()
2590 if (png_ptr->user_chunk_cache_max == 1) in png_handle_zTXt()
2592 png_crc_finish(png_ptr, length); in png_handle_zTXt()
2596 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_zTXt()
2598 png_crc_finish(png_ptr, length); in png_handle_zTXt()
2599 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_zTXt()
2605 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_zTXt()
2606 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_zTXt()
2608 if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_zTXt()
2609 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_zTXt()
2614 buffer = png_read_buffer(png_ptr, length, 2/*silent*/); in png_handle_zTXt()
2618 png_crc_finish(png_ptr, length); in png_handle_zTXt()
2619 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_zTXt()
2623 png_crc_read(png_ptr, buffer, length); in png_handle_zTXt()
2625 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_zTXt()
2655 if (png_decompress_chunk(png_ptr, length, keyword_length+2, in png_handle_zTXt()
2660 if (png_ptr->read_buffer == NULL) in png_handle_zTXt()
2668 buffer = png_ptr->read_buffer; in png_handle_zTXt()
2679 if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0) in png_handle_zTXt()
2685 errmsg = png_ptr->zstream.msg; in png_handle_zTXt()
2689 png_chunk_benign_error(png_ptr, errmsg); in png_handle_zTXt()
2696 png_handle_iTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_iTXt() argument
2705 if (png_ptr->user_chunk_cache_max != 0) in png_handle_iTXt()
2707 if (png_ptr->user_chunk_cache_max == 1) in png_handle_iTXt()
2709 png_crc_finish(png_ptr, length); in png_handle_iTXt()
2713 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_iTXt()
2715 png_crc_finish(png_ptr, length); in png_handle_iTXt()
2716 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_iTXt()
2722 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_iTXt()
2723 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_iTXt()
2725 if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_iTXt()
2726 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_iTXt()
2728 buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/); in png_handle_iTXt()
2732 png_crc_finish(png_ptr, length); in png_handle_iTXt()
2733 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_iTXt()
2737 png_crc_read(png_ptr, buffer, length); in png_handle_iTXt()
2739 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_iTXt()
2800 if (png_decompress_chunk(png_ptr, length, prefix_length, in png_handle_iTXt()
2802 buffer = png_ptr->read_buffer; in png_handle_iTXt()
2805 errmsg = png_ptr->zstream.msg; in png_handle_iTXt()
2830 if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0) in png_handle_iTXt()
2839 png_chunk_benign_error(png_ptr, errmsg); in png_handle_iTXt()
2846 png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length) in png_cache_unknown_chunk() argument
2850 if (png_ptr->unknown_chunk.data != NULL) in png_cache_unknown_chunk()
2852 png_free(png_ptr, png_ptr->unknown_chunk.data); in png_cache_unknown_chunk()
2853 png_ptr->unknown_chunk.data = NULL; in png_cache_unknown_chunk()
2857 if (png_ptr->user_chunk_malloc_max > 0 && in png_cache_unknown_chunk()
2858 png_ptr->user_chunk_malloc_max < limit) in png_cache_unknown_chunk()
2859 limit = png_ptr->user_chunk_malloc_max; in png_cache_unknown_chunk()
2868 PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name); in png_cache_unknown_chunk()
2870 png_ptr->unknown_chunk.size = (png_size_t)length/*SAFE*/; in png_cache_unknown_chunk()
2872 png_ptr->unknown_chunk.location = (png_byte)png_ptr->mode/*SAFE*/; in png_cache_unknown_chunk()
2875 png_ptr->unknown_chunk.data = NULL; in png_cache_unknown_chunk()
2880 png_ptr->unknown_chunk.data = png_voidcast(png_bytep, in png_cache_unknown_chunk()
2881 png_malloc_warn(png_ptr, length)); in png_cache_unknown_chunk()
2885 if (png_ptr->unknown_chunk.data == NULL && length > 0) in png_cache_unknown_chunk()
2888 png_crc_finish(png_ptr, length); in png_cache_unknown_chunk()
2889 png_chunk_benign_error(png_ptr, "unknown chunk exceeds memory limits"); in png_cache_unknown_chunk()
2896 png_crc_read(png_ptr, png_ptr->unknown_chunk.data, length); in png_cache_unknown_chunk()
2897 png_crc_finish(png_ptr, 0); in png_cache_unknown_chunk()
2905 png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr, in png_handle_unknown() argument
2926 keep = png_chunk_unknown_handling(png_ptr, png_ptr->chunk_name); in png_handle_unknown()
2938 if (png_ptr->read_user_chunk_fn != NULL) in png_handle_unknown()
2940 if (png_cache_unknown_chunk(png_ptr, length) != 0) in png_handle_unknown()
2943 int ret = (*(png_ptr->read_user_chunk_fn))(png_ptr, in png_handle_unknown()
2944 &png_ptr->unknown_chunk); in png_handle_unknown()
2956 png_chunk_error(png_ptr, "error in user chunk"); in png_handle_unknown()
2974 if (png_ptr->unknown_default < PNG_HANDLE_CHUNK_IF_SAFE) in png_handle_unknown()
2976 png_chunk_warning(png_ptr, "Saving unknown chunk:"); in png_handle_unknown()
2977 png_app_warning(png_ptr, in png_handle_unknown()
3011 keep = png_ptr->unknown_default; in png_handle_unknown()
3015 PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))) in png_handle_unknown()
3017 if (png_cache_unknown_chunk(png_ptr, length) == 0) in png_handle_unknown()
3022 png_crc_finish(png_ptr, length); in png_handle_unknown()
3037 png_app_error(png_ptr, "no unknown chunk support available"); in png_handle_unknown()
3039 png_crc_finish(png_ptr, length); in png_handle_unknown()
3049 PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))) in png_handle_unknown()
3052 switch (png_ptr->user_chunk_cache_max) in png_handle_unknown()
3055 png_ptr->user_chunk_cache_max = 1; in png_handle_unknown()
3056 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_unknown()
3065 --(png_ptr->user_chunk_cache_max); in png_handle_unknown()
3072 png_set_unknown_chunks(png_ptr, info_ptr, in png_handle_unknown()
3073 &png_ptr->unknown_chunk, 1); in png_handle_unknown()
3088 if (png_ptr->unknown_chunk.data != NULL) in png_handle_unknown()
3089 png_free(png_ptr, png_ptr->unknown_chunk.data); in png_handle_unknown()
3090 png_ptr->unknown_chunk.data = NULL; in png_handle_unknown()
3094 png_crc_finish(png_ptr, length); in png_handle_unknown()
3100 if (handled == 0 && PNG_CHUNK_CRITICAL(png_ptr->chunk_name)) in png_handle_unknown()
3101 png_chunk_error(png_ptr, "unhandled critical chunk"); in png_handle_unknown()
3117 png_check_chunk_name(png_const_structrp png_ptr, const png_uint_32 chunk_name) in png_check_chunk_name() argument
3129 png_chunk_error(png_ptr, "invalid chunk type"); in png_check_chunk_name()
3136 png_check_chunk_length(png_const_structrp png_ptr, const png_uint_32 length) in png_check_chunk_length() argument
3141 if (png_ptr->user_chunk_malloc_max > 0 && in png_check_chunk_length()
3142 png_ptr->user_chunk_malloc_max < limit) in png_check_chunk_length()
3143 limit = png_ptr->user_chunk_malloc_max; in png_check_chunk_length()
3148 if (png_ptr->chunk_name == png_IDAT) in png_check_chunk_length()
3152 (png_ptr->width * png_ptr->channels * (png_ptr->bit_depth > 8? 2: 1) in png_check_chunk_length()
3153 + 1 + (png_ptr->interlaced? 6: 0)); in png_check_chunk_length()
3154 if (png_ptr->height > PNG_UINT_32_MAX/row_factor) in png_check_chunk_length()
3157 idat_limit = png_ptr->height * row_factor; in png_check_chunk_length()
3168 png_chunk_error(png_ptr, "chunk data is too large"); in png_check_chunk_length()
3180 png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display) in png_combine_row() argument
3182 unsigned int pixel_depth = png_ptr->transformed_pixel_depth; in png_combine_row()
3183 png_const_bytep sp = png_ptr->row_buf + 1; in png_combine_row()
3184 png_alloc_size_t row_width = png_ptr->width; in png_combine_row()
3185 unsigned int pass = png_ptr->pass; in png_combine_row()
3196 png_error(png_ptr, "internal row logic error"); in png_combine_row()
3202 if (png_ptr->info_rowbytes != 0 && png_ptr->info_rowbytes != in png_combine_row()
3204 png_error(png_ptr, "internal row size calculation error"); in png_combine_row()
3208 png_error(png_ptr, "internal row width error"); in png_combine_row()
3221 if ((png_ptr->transformations & PNG_PACKSWAP) != 0) in png_combine_row()
3238 if (png_ptr->interlaced != 0 && in png_combine_row()
3239 (png_ptr->transformations & PNG_INTERLACE) != 0 && in png_combine_row()
3385 if ((png_ptr->transformations & PNG_PACKSWAP) != 0) in png_combine_row()
3431 png_error(png_ptr, "invalid user transform pixel depth"); in png_combine_row()
4129 png_read_IDAT_data(png_structrp png_ptr, png_bytep output, in png_read_IDAT_data() argument
4133 png_ptr->zstream.next_out = output; in png_read_IDAT_data()
4134 png_ptr->zstream.avail_out = 0; /* safety: set below */ in png_read_IDAT_data()
4144 if (png_ptr->zstream.avail_in == 0) in png_read_IDAT_data()
4149 while (png_ptr->idat_size == 0) in png_read_IDAT_data()
4151 png_crc_finish(png_ptr, 0); in png_read_IDAT_data()
4153 png_ptr->idat_size = png_read_chunk_header(png_ptr); in png_read_IDAT_data()
4157 if (png_ptr->chunk_name != png_IDAT) in png_read_IDAT_data()
4158 png_error(png_ptr, "Not enough image data"); in png_read_IDAT_data()
4161 avail_in = png_ptr->IDAT_read_size; in png_read_IDAT_data()
4163 if (avail_in > png_ptr->idat_size) in png_read_IDAT_data()
4164 avail_in = (uInt)png_ptr->idat_size; in png_read_IDAT_data()
4171 buffer = png_read_buffer(png_ptr, avail_in, 0/*error*/); in png_read_IDAT_data()
4173 png_crc_read(png_ptr, buffer, avail_in); in png_read_IDAT_data()
4174 png_ptr->idat_size -= avail_in; in png_read_IDAT_data()
4176 png_ptr->zstream.next_in = buffer; in png_read_IDAT_data()
4177 png_ptr->zstream.avail_in = avail_in; in png_read_IDAT_data()
4189 png_ptr->zstream.avail_out = out; in png_read_IDAT_data()
4194 png_ptr->zstream.next_out = tmpbuf; in png_read_IDAT_data()
4195 png_ptr->zstream.avail_out = (sizeof tmpbuf); in png_read_IDAT_data()
4205 ret = PNG_INFLATE(png_ptr, Z_NO_FLUSH); in png_read_IDAT_data()
4209 avail_out += png_ptr->zstream.avail_out; in png_read_IDAT_data()
4212 avail_out += (sizeof tmpbuf) - png_ptr->zstream.avail_out; in png_read_IDAT_data()
4214 png_ptr->zstream.avail_out = 0; in png_read_IDAT_data()
4219 png_ptr->zstream.next_out = NULL; in png_read_IDAT_data()
4221 png_ptr->mode |= PNG_AFTER_IDAT; in png_read_IDAT_data()
4222 png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; in png_read_IDAT_data()
4224 if (png_ptr->zstream.avail_in > 0 || png_ptr->idat_size > 0) in png_read_IDAT_data()
4225 png_chunk_benign_error(png_ptr, "Extra compressed data"); in png_read_IDAT_data()
4231 png_zstream_error(png_ptr, ret); in png_read_IDAT_data()
4234 png_chunk_error(png_ptr, png_ptr->zstream.msg); in png_read_IDAT_data()
4238 png_chunk_benign_error(png_ptr, png_ptr->zstream.msg); in png_read_IDAT_data()
4250 png_error(png_ptr, "Not enough image data"); in png_read_IDAT_data()
4253 png_chunk_benign_error(png_ptr, "Too much image data"); in png_read_IDAT_data()
4258 png_read_finish_IDAT(png_structrp png_ptr) in png_read_finish_IDAT() argument
4265 if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0) in png_read_finish_IDAT()
4271 png_read_IDAT_data(png_ptr, NULL, 0); in png_read_finish_IDAT()
4272 png_ptr->zstream.next_out = NULL; /* safety */ in png_read_finish_IDAT()
4277 if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0) in png_read_finish_IDAT()
4279 png_ptr->mode |= PNG_AFTER_IDAT; in png_read_finish_IDAT()
4280 png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; in png_read_finish_IDAT()
4287 if (png_ptr->zowner == png_IDAT) in png_read_finish_IDAT()
4290 png_ptr->zstream.next_in = NULL; in png_read_finish_IDAT()
4291 png_ptr->zstream.avail_in = 0; in png_read_finish_IDAT()
4294 png_ptr->zowner = 0; in png_read_finish_IDAT()
4301 (void)png_crc_finish(png_ptr, png_ptr->idat_size); in png_read_finish_IDAT()
4306 png_read_finish_row(png_structrp png_ptr) in png_read_finish_row() argument
4323 png_ptr->row_number++; in png_read_finish_row()
4324 if (png_ptr->row_number < png_ptr->num_rows) in png_read_finish_row()
4327 if (png_ptr->interlaced != 0) in png_read_finish_row()
4329 png_ptr->row_number = 0; in png_read_finish_row()
4334 memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1); in png_read_finish_row()
4338 png_ptr->pass++; in png_read_finish_row()
4340 if (png_ptr->pass >= 7) in png_read_finish_row()
4343 png_ptr->iwidth = (png_ptr->width + in png_read_finish_row()
4344 png_pass_inc[png_ptr->pass] - 1 - in png_read_finish_row()
4345 png_pass_start[png_ptr->pass]) / in png_read_finish_row()
4346 png_pass_inc[png_ptr->pass]; in png_read_finish_row()
4348 if ((png_ptr->transformations & PNG_INTERLACE) == 0) in png_read_finish_row()
4350 png_ptr->num_rows = (png_ptr->height + in png_read_finish_row()
4351 png_pass_yinc[png_ptr->pass] - 1 - in png_read_finish_row()
4352 png_pass_ystart[png_ptr->pass]) / in png_read_finish_row()
4353 png_pass_yinc[png_ptr->pass]; in png_read_finish_row()
4359 } while (png_ptr->num_rows == 0 || png_ptr->iwidth == 0); in png_read_finish_row()
4361 if (png_ptr->pass < 7) in png_read_finish_row()
4366 png_read_finish_IDAT(png_ptr); in png_read_finish_row()
4371 png_read_start_row(png_structrp png_ptr) in png_read_start_row() argument
4393 png_init_read_transformations(png_ptr); in png_read_start_row()
4395 if (png_ptr->interlaced != 0) in png_read_start_row()
4397 if ((png_ptr->transformations & PNG_INTERLACE) == 0) in png_read_start_row()
4398 png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 - in png_read_start_row()
4402 png_ptr->num_rows = png_ptr->height; in png_read_start_row()
4404 png_ptr->iwidth = (png_ptr->width + in png_read_start_row()
4405 png_pass_inc[png_ptr->pass] - 1 - in png_read_start_row()
4406 png_pass_start[png_ptr->pass]) / in png_read_start_row()
4407 png_pass_inc[png_ptr->pass]; in png_read_start_row()
4412 png_ptr->num_rows = png_ptr->height; in png_read_start_row()
4413 png_ptr->iwidth = png_ptr->width; in png_read_start_row()
4416 max_pixel_depth = (unsigned int)png_ptr->pixel_depth; in png_read_start_row()
4429 if ((png_ptr->transformations & PNG_PACK) != 0 && png_ptr->bit_depth < 8) in png_read_start_row()
4434 if ((png_ptr->transformations & PNG_EXPAND) != 0) in png_read_start_row()
4436 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_read_start_row()
4438 if (png_ptr->num_trans != 0) in png_read_start_row()
4445 else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) in png_read_start_row()
4450 if (png_ptr->num_trans != 0) in png_read_start_row()
4454 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) in png_read_start_row()
4456 if (png_ptr->num_trans != 0) in png_read_start_row()
4466 if ((png_ptr->transformations & PNG_EXPAND_16) != 0) in png_read_start_row()
4472 if ((png_ptr->transformations & PNG_EXPAND) != 0) in png_read_start_row()
4474 if (png_ptr->bit_depth < 16) in png_read_start_row()
4479 png_ptr->transformations &= ~PNG_EXPAND_16; in png_read_start_row()
4484 if ((png_ptr->transformations & (PNG_FILLER)) != 0) in png_read_start_row()
4486 if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) in png_read_start_row()
4495 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB || in png_read_start_row()
4496 png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_read_start_row()
4508 if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0) in png_read_start_row()
4512 (png_ptr->num_trans != 0 && in png_read_start_row()
4513 (png_ptr->transformations & PNG_EXPAND) != 0) || in png_read_start_row()
4516 (png_ptr->transformations & (PNG_FILLER)) != 0 || in png_read_start_row()
4518 png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) in png_read_start_row()
4531 if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) in png_read_start_row()
4538 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) in png_read_start_row()
4549 if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0) in png_read_start_row()
4551 unsigned int user_pixel_depth = png_ptr->user_transform_depth * in png_read_start_row()
4552 png_ptr->user_transform_channels; in png_read_start_row()
4562 png_ptr->maximum_pixel_depth = (png_byte)max_pixel_depth; in png_read_start_row()
4563 png_ptr->transformed_pixel_depth = 0; /* calculated on demand */ in png_read_start_row()
4568 row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7)); in png_read_start_row()
4577 png_error(png_ptr, "This image requires a row greater than 64KB"); in png_read_start_row()
4580 if (row_bytes + 48 > png_ptr->old_big_row_buf_size) in png_read_start_row()
4582 png_free(png_ptr, png_ptr->big_row_buf); in png_read_start_row()
4583 png_free(png_ptr, png_ptr->big_prev_row); in png_read_start_row()
4585 if (png_ptr->interlaced != 0) in png_read_start_row()
4586 png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr, in png_read_start_row()
4590 png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48); in png_read_start_row()
4592 png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48); in png_read_start_row()
4603 png_bytep temp = png_ptr->big_row_buf + 32; in png_read_start_row()
4605 png_ptr->row_buf = temp - extra - 1/*filter byte*/; in png_read_start_row()
4607 temp = png_ptr->big_prev_row + 32; in png_read_start_row()
4609 png_ptr->prev_row = temp - extra - 1/*filter byte*/; in png_read_start_row()
4614 png_ptr->row_buf = png_ptr->big_row_buf + 31; in png_read_start_row()
4615 png_ptr->prev_row = png_ptr->big_prev_row + 31; in png_read_start_row()
4617 png_ptr->old_big_row_buf_size = row_bytes + 48; in png_read_start_row()
4621 if (png_ptr->rowbytes > 65535) in png_read_start_row()
4622 png_error(png_ptr, "This image requires a row greater than 64KB"); in png_read_start_row()
4625 if (png_ptr->rowbytes > (PNG_SIZE_MAX - 1)) in png_read_start_row()
4626 png_error(png_ptr, "Row has too many bytes to allocate in memory"); in png_read_start_row()
4628 memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1); in png_read_start_row()
4630 png_debug1(3, "width = %u,", png_ptr->width); in png_read_start_row()
4631 png_debug1(3, "height = %u,", png_ptr->height); in png_read_start_row()
4632 png_debug1(3, "iwidth = %u,", png_ptr->iwidth); in png_read_start_row()
4633 png_debug1(3, "num_rows = %u,", png_ptr->num_rows); in png_read_start_row()
4634 png_debug1(3, "rowbytes = %lu,", (unsigned long)png_ptr->rowbytes); in png_read_start_row()
4636 (unsigned long)PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1); in png_read_start_row()
4642 if (png_ptr->read_buffer != NULL) in png_read_start_row()
4644 png_bytep buffer = png_ptr->read_buffer; in png_read_start_row()
4646 png_ptr->read_buffer_size = 0; in png_read_start_row()
4647 png_ptr->read_buffer = NULL; in png_read_start_row()
4648 png_free(png_ptr, buffer); in png_read_start_row()
4656 if (png_inflate_claim(png_ptr, png_IDAT) != Z_OK) in png_read_start_row()
4657 png_error(png_ptr, png_ptr->zstream.msg); in png_read_start_row()
4659 png_ptr->flags |= PNG_FLAG_ROW_INIT; in png_read_start_row()