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_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA; in png_read_chunk_header()
193 png_crc_read(png_structrp png_ptr, png_bytep buf, png_uint_32 length) in png_crc_read() argument
195 if (png_ptr == NULL) in png_crc_read()
198 png_read_data(png_ptr, buf, length); in png_crc_read()
199 png_calculate_crc(png_ptr, buf, length); in png_crc_read()
208 png_crc_finish(png_structrp png_ptr, png_uint_32 skip) in png_crc_finish() argument
223 png_crc_read(png_ptr, tmpbuf, len); in png_crc_finish()
226 if (png_crc_error(png_ptr) != 0) in png_crc_finish()
228 if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0 ? in png_crc_finish()
229 (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) == 0 : in png_crc_finish()
230 (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE) != 0) in png_crc_finish()
232 png_chunk_warning(png_ptr, "CRC error"); in png_crc_finish()
236 png_chunk_error(png_ptr, "CRC error"); in png_crc_finish()
248 png_crc_error(png_structrp png_ptr) in png_crc_error() argument
254 if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0) in png_crc_error()
256 if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) == in png_crc_error()
263 if ((png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) != 0) in png_crc_error()
268 png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC; in png_crc_error()
272 png_read_data(png_ptr, crc_bytes, 4); in png_crc_error()
277 return ((int)(crc != png_ptr->crc)); in png_crc_error()
295 png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn) in png_read_buffer() argument
297 png_bytep buffer = png_ptr->read_buffer; in png_read_buffer()
299 if (buffer != NULL && new_size > png_ptr->read_buffer_size) in png_read_buffer()
301 png_ptr->read_buffer = NULL; in png_read_buffer()
302 png_ptr->read_buffer = NULL; in png_read_buffer()
303 png_ptr->read_buffer_size = 0; in png_read_buffer()
304 png_free(png_ptr, buffer); in png_read_buffer()
310 buffer = png_voidcast(png_bytep, png_malloc_base(png_ptr, new_size)); in png_read_buffer()
314 png_ptr->read_buffer = buffer; in png_read_buffer()
315 png_ptr->read_buffer_size = new_size; in png_read_buffer()
321 png_chunk_warning(png_ptr, "insufficient memory to read chunk"); in png_read_buffer()
324 png_chunk_error(png_ptr, "insufficient memory to read chunk"); in png_read_buffer()
338 png_inflate_claim(png_structrp png_ptr, png_uint_32 owner) in png_inflate_claim() argument
340 if (png_ptr->zowner != 0) in png_inflate_claim()
344 PNG_STRING_FROM_CHUNK(msg, png_ptr->zowner); in png_inflate_claim()
351 png_chunk_warning(png_ptr, msg); in png_inflate_claim()
352 png_ptr->zowner = 0; in png_inflate_claim()
354 png_chunk_error(png_ptr, msg); in png_inflate_claim()
378 if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) == in png_inflate_claim()
382 png_ptr->zstream_start = 0; /* fixed window size */ in png_inflate_claim()
388 png_ptr->zstream_start = 1; in png_inflate_claim()
398 png_ptr->zstream.next_in = NULL; in png_inflate_claim()
399 png_ptr->zstream.avail_in = 0; in png_inflate_claim()
400 png_ptr->zstream.next_out = NULL; in png_inflate_claim()
401 png_ptr->zstream.avail_out = 0; in png_inflate_claim()
403 if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) != 0) in png_inflate_claim()
406 ret = inflateReset(&png_ptr->zstream); in png_inflate_claim()
408 ret = inflateReset2(&png_ptr->zstream, window_bits); in png_inflate_claim()
415 ret = inflateInit(&png_ptr->zstream); in png_inflate_claim()
417 ret = inflateInit2(&png_ptr->zstream, window_bits); in png_inflate_claim()
421 png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED; in png_inflate_claim()
425 png_ptr->zowner = owner; in png_inflate_claim()
428 png_zstream_error(png_ptr, ret); in png_inflate_claim()
446 png_zlib_inflate(png_structrp png_ptr, int flush) in png_zlib_inflate() argument
448 if (png_ptr->zstream_start && png_ptr->zstream.avail_in > 0) in png_zlib_inflate()
450 if ((*png_ptr->zstream.next_in >> 4) > 7) in png_zlib_inflate()
452 png_ptr->zstream.msg = "invalid window size (libpng)"; in png_zlib_inflate()
456 png_ptr->zstream_start = 0; in png_zlib_inflate()
459 return inflate(&png_ptr->zstream, flush); in png_zlib_inflate()
476 png_inflate(png_structrp png_ptr, png_uint_32 owner, int finish, in png_inflate() argument
480 if (png_ptr->zowner == owner) /* Else not claimed */ in png_inflate()
495 png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input); in png_inflate()
497 png_ptr->zstream.avail_in = 0; in png_inflate()
498 png_ptr->zstream.avail_out = 0; in png_inflate()
504 png_ptr->zstream.next_out = output; in png_inflate()
519 avail_in += png_ptr->zstream.avail_in; /* not consumed last time */ in png_inflate()
527 png_ptr->zstream.avail_in = avail; in png_inflate()
530 avail_out += png_ptr->zstream.avail_out; /* not written last time */ in png_inflate()
539 png_ptr->zstream.next_out = local_buffer; in png_inflate()
547 png_ptr->zstream.avail_out = avail; in png_inflate()
556 ret = PNG_INFLATE(png_ptr, avail_out > 0 ? Z_NO_FLUSH : in png_inflate()
562 png_ptr->zstream.next_out = NULL; in png_inflate()
565 avail_in += png_ptr->zstream.avail_in; in png_inflate()
566 avail_out += png_ptr->zstream.avail_out; in png_inflate()
578 png_zstream_error(png_ptr, ret); in png_inflate()
588 png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed"); in png_inflate()
601 png_decompress_chunk(png_structrp png_ptr, in png_decompress_chunk() argument
616 if (png_ptr->user_chunk_malloc_max > 0 && in png_decompress_chunk()
617 png_ptr->user_chunk_malloc_max < limit) in png_decompress_chunk()
618 limit = png_ptr->user_chunk_malloc_max; in png_decompress_chunk()
634 ret = png_inflate_claim(png_ptr, png_ptr->chunk_name); in png_decompress_chunk()
640 ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/, in png_decompress_chunk()
641 /* input: */ png_ptr->read_buffer + prefix_size, &lzsize, in png_decompress_chunk()
653 if (inflateReset(&png_ptr->zstream) == Z_OK) in png_decompress_chunk()
663 png_bytep text = png_voidcast(png_bytep, png_malloc_base(png_ptr, in png_decompress_chunk()
668 ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/, in png_decompress_chunk()
669 png_ptr->read_buffer + prefix_size, &lzsize, in png_decompress_chunk()
680 memcpy(text, png_ptr->read_buffer, prefix_size); in png_decompress_chunk()
683 png_bytep old_ptr = png_ptr->read_buffer; in png_decompress_chunk()
685 png_ptr->read_buffer = text; in png_decompress_chunk()
686 png_ptr->read_buffer_size = buffer_size; in png_decompress_chunk()
709 png_free(png_ptr, text); in png_decompress_chunk()
716 png_chunk_benign_error(png_ptr, "extra compressed data"); in png_decompress_chunk()
723 png_zstream_error(png_ptr, Z_MEM_ERROR); in png_decompress_chunk()
730 png_zstream_error(png_ptr, ret); in png_decompress_chunk()
741 png_ptr->zowner = 0; in png_decompress_chunk()
753 png_zstream_error(png_ptr, Z_MEM_ERROR); in png_decompress_chunk()
764 png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size, in png_inflate_read() argument
768 if (png_ptr->zowner == png_ptr->chunk_name) in png_inflate_read()
773 png_ptr->zstream.next_out = next_out; in png_inflate_read()
774 png_ptr->zstream.avail_out = 0; /* set in the loop */ in png_inflate_read()
778 if (png_ptr->zstream.avail_in == 0) in png_inflate_read()
785 png_crc_read(png_ptr, read_buffer, read_size); in png_inflate_read()
787 png_ptr->zstream.next_in = read_buffer; in png_inflate_read()
788 png_ptr->zstream.avail_in = read_size; in png_inflate_read()
791 if (png_ptr->zstream.avail_out == 0) in png_inflate_read()
798 png_ptr->zstream.avail_out = avail; in png_inflate_read()
805 ret = PNG_INFLATE(png_ptr, in png_inflate_read()
808 while (ret == Z_OK && (*out_size > 0 || png_ptr->zstream.avail_out > 0)); in png_inflate_read()
810 *out_size += png_ptr->zstream.avail_out; in png_inflate_read()
811 png_ptr->zstream.avail_out = 0; /* Should not be required, but is safe */ in png_inflate_read()
814 png_zstream_error(png_ptr, ret); in png_inflate_read()
820 png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed"); in png_inflate_read()
829 png_handle_IHDR(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_IHDR() argument
838 if ((png_ptr->mode & PNG_HAVE_IHDR) != 0) in png_handle_IHDR()
839 png_chunk_error(png_ptr, "out of place"); in png_handle_IHDR()
843 png_chunk_error(png_ptr, "invalid"); in png_handle_IHDR()
845 png_ptr->mode |= PNG_HAVE_IHDR; in png_handle_IHDR()
847 png_crc_read(png_ptr, buf, 13); in png_handle_IHDR()
848 png_crc_finish(png_ptr, 0); in png_handle_IHDR()
850 width = png_get_uint_31(png_ptr, buf); in png_handle_IHDR()
851 height = png_get_uint_31(png_ptr, buf + 4); in png_handle_IHDR()
859 png_ptr->width = width; in png_handle_IHDR()
860 png_ptr->height = height; in png_handle_IHDR()
861 png_ptr->bit_depth = (png_byte)bit_depth; in png_handle_IHDR()
862 png_ptr->interlaced = (png_byte)interlace_type; in png_handle_IHDR()
863 png_ptr->color_type = (png_byte)color_type; in png_handle_IHDR()
865 png_ptr->filter_type = (png_byte)filter_type; in png_handle_IHDR()
867 png_ptr->compression_type = (png_byte)compression_type; in png_handle_IHDR()
870 switch (png_ptr->color_type) in png_handle_IHDR()
875 png_ptr->channels = 1; in png_handle_IHDR()
879 png_ptr->channels = 3; in png_handle_IHDR()
883 png_ptr->channels = 2; in png_handle_IHDR()
887 png_ptr->channels = 4; in png_handle_IHDR()
892 png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth * png_ptr->channels); in png_handle_IHDR()
893 png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width); in png_handle_IHDR()
894 png_debug1(3, "bit_depth = %d", png_ptr->bit_depth); in png_handle_IHDR()
895 png_debug1(3, "channels = %d", png_ptr->channels); in png_handle_IHDR()
896 png_debug1(3, "rowbytes = %lu", (unsigned long)png_ptr->rowbytes); in png_handle_IHDR()
897 png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, in png_handle_IHDR()
903 png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_PLTE() argument
913 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_PLTE()
914 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_PLTE()
921 else if ((png_ptr->mode & PNG_HAVE_PLTE) != 0) in png_handle_PLTE()
922 png_chunk_error(png_ptr, "duplicate"); in png_handle_PLTE()
924 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_PLTE()
929 png_crc_finish(png_ptr, length); in png_handle_PLTE()
930 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_PLTE()
934 png_ptr->mode |= PNG_HAVE_PLTE; in png_handle_PLTE()
936 if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) in png_handle_PLTE()
938 png_crc_finish(png_ptr, length); in png_handle_PLTE()
939 png_chunk_benign_error(png_ptr, "ignored in grayscale PNG"); in png_handle_PLTE()
944 if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
946 png_crc_finish(png_ptr, length); in png_handle_PLTE()
953 png_crc_finish(png_ptr, length); in png_handle_PLTE()
955 if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
956 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_PLTE()
959 png_chunk_error(png_ptr, "invalid"); in png_handle_PLTE()
972 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
973 max_palette_length = (1 << png_ptr->bit_depth); in png_handle_PLTE()
985 png_crc_read(png_ptr, buf, 3); in png_handle_PLTE()
995 png_crc_read(png_ptr, buf, 3); in png_handle_PLTE()
1009 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_PLTE()
1012 png_crc_finish(png_ptr, (int) length - num * 3); in png_handle_PLTE()
1016 else if (png_crc_error(png_ptr) != 0) /* Only if we have a CRC error */ in png_handle_PLTE()
1027 if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE) == 0) in png_handle_PLTE()
1029 if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) != 0) in png_handle_PLTE()
1033 png_chunk_error(png_ptr, "CRC error"); in png_handle_PLTE()
1037 else if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) == 0) in png_handle_PLTE()
1038 png_chunk_warning(png_ptr, "CRC error"); in png_handle_PLTE()
1050 png_set_PLTE(png_ptr, info_ptr, palette, num); in png_handle_PLTE()
1062 if (png_ptr->num_trans > 0 || in png_handle_PLTE()
1069 png_ptr->num_trans = 0; in png_handle_PLTE()
1074 png_chunk_benign_error(png_ptr, "tRNS must be after"); in png_handle_PLTE()
1080 png_chunk_benign_error(png_ptr, "hIST must be after"); in png_handle_PLTE()
1085 png_chunk_benign_error(png_ptr, "bKGD must be after"); in png_handle_PLTE()
1090 png_handle_IEND(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_IEND() argument
1094 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0 || in png_handle_IEND()
1095 (png_ptr->mode & PNG_HAVE_IDAT) == 0) in png_handle_IEND()
1096 png_chunk_error(png_ptr, "out of place"); in png_handle_IEND()
1098 png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND); in png_handle_IEND()
1100 png_crc_finish(png_ptr, length); in png_handle_IEND()
1103 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_IEND()
1110 png_handle_gAMA(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_gAMA() argument
1117 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_gAMA()
1118 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_gAMA()
1120 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_gAMA()
1122 png_crc_finish(png_ptr, length); in png_handle_gAMA()
1123 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_gAMA()
1129 png_crc_finish(png_ptr, length); in png_handle_gAMA()
1130 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_gAMA()
1134 png_crc_read(png_ptr, buf, 4); in png_handle_gAMA()
1136 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_gAMA()
1141 png_colorspace_set_gamma(png_ptr, &png_ptr->colorspace, igamma); in png_handle_gAMA()
1142 png_colorspace_sync(png_ptr, info_ptr); in png_handle_gAMA()
1148 png_handle_sBIT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sBIT() argument
1156 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_sBIT()
1157 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sBIT()
1159 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_sBIT()
1161 png_crc_finish(png_ptr, length); in png_handle_sBIT()
1162 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sBIT()
1168 png_crc_finish(png_ptr, length); in png_handle_sBIT()
1169 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_sBIT()
1173 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_sBIT()
1181 truelen = png_ptr->channels; in png_handle_sBIT()
1182 sample_depth = png_ptr->bit_depth; in png_handle_sBIT()
1187 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sBIT()
1188 png_crc_finish(png_ptr, length); in png_handle_sBIT()
1193 png_crc_read(png_ptr, buf, truelen); in png_handle_sBIT()
1195 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_sBIT()
1202 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sBIT()
1207 if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) in png_handle_sBIT()
1209 png_ptr->sig_bit.red = buf[0]; in png_handle_sBIT()
1210 png_ptr->sig_bit.green = buf[1]; in png_handle_sBIT()
1211 png_ptr->sig_bit.blue = buf[2]; in png_handle_sBIT()
1212 png_ptr->sig_bit.alpha = buf[3]; in png_handle_sBIT()
1217 png_ptr->sig_bit.gray = buf[0]; in png_handle_sBIT()
1218 png_ptr->sig_bit.red = buf[0]; in png_handle_sBIT()
1219 png_ptr->sig_bit.green = buf[0]; in png_handle_sBIT()
1220 png_ptr->sig_bit.blue = buf[0]; in png_handle_sBIT()
1221 png_ptr->sig_bit.alpha = buf[1]; in png_handle_sBIT()
1224 png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit)); in png_handle_sBIT()
1230 png_handle_cHRM(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_cHRM() argument
1237 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_cHRM()
1238 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_cHRM()
1240 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_cHRM()
1242 png_crc_finish(png_ptr, length); in png_handle_cHRM()
1243 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_cHRM()
1249 png_crc_finish(png_ptr, length); in png_handle_cHRM()
1250 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_cHRM()
1254 png_crc_read(png_ptr, buf, 32); in png_handle_cHRM()
1256 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_cHRM()
1277 png_chunk_benign_error(png_ptr, "invalid values"); in png_handle_cHRM()
1282 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) in png_handle_cHRM()
1285 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) != 0) in png_handle_cHRM()
1287 png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; in png_handle_cHRM()
1288 png_colorspace_sync(png_ptr, info_ptr); in png_handle_cHRM()
1289 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_cHRM()
1293 png_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM; in png_handle_cHRM()
1294 (void)png_colorspace_set_chromaticities(png_ptr, &png_ptr->colorspace, &xy, in png_handle_cHRM()
1296 png_colorspace_sync(png_ptr, info_ptr); in png_handle_cHRM()
1302 png_handle_sRGB(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sRGB() argument
1308 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_sRGB()
1309 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sRGB()
1311 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_sRGB()
1313 png_crc_finish(png_ptr, length); in png_handle_sRGB()
1314 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sRGB()
1320 png_crc_finish(png_ptr, length); in png_handle_sRGB()
1321 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sRGB()
1325 png_crc_read(png_ptr, &intent, 1); in png_handle_sRGB()
1327 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_sRGB()
1331 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) in png_handle_sRGB()
1337 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) != 0) in png_handle_sRGB()
1339 png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; in png_handle_sRGB()
1340 png_colorspace_sync(png_ptr, info_ptr); in png_handle_sRGB()
1341 png_chunk_benign_error(png_ptr, "too many profiles"); in png_handle_sRGB()
1345 (void)png_colorspace_set_sRGB(png_ptr, &png_ptr->colorspace, intent); in png_handle_sRGB()
1346 png_colorspace_sync(png_ptr, info_ptr); in png_handle_sRGB()
1352 png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_iCCP() argument
1360 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_iCCP()
1361 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_iCCP()
1363 else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) in png_handle_iCCP()
1365 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1366 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_iCCP()
1380 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1381 png_chunk_benign_error(png_ptr, "too short"); in png_handle_iCCP()
1386 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) in png_handle_iCCP()
1388 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1395 if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) == 0) in png_handle_iCCP()
1407 png_crc_read(png_ptr, (png_bytep)keyword, read_length); in png_handle_iCCP()
1426 if (png_inflate_claim(png_ptr, png_iCCP) == Z_OK) in png_handle_iCCP()
1432 png_ptr->zstream.next_in = (Bytef*)keyword + (keyword_length+2); in png_handle_iCCP()
1433 png_ptr->zstream.avail_in = read_length; in png_handle_iCCP()
1434 (void)png_inflate_read(png_ptr, local_buffer, in png_handle_iCCP()
1445 if (png_icc_check_length(png_ptr, &png_ptr->colorspace, in png_handle_iCCP()
1451 if (png_icc_check_header(png_ptr, &png_ptr->colorspace, in png_handle_iCCP()
1453 png_ptr->color_type) != 0) in png_handle_iCCP()
1462 png_bytep profile = png_read_buffer(png_ptr, in png_handle_iCCP()
1472 (void)png_inflate_read(png_ptr, local_buffer, in png_handle_iCCP()
1481 if (png_icc_check_tag_table(png_ptr, in png_handle_iCCP()
1482 &png_ptr->colorspace, keyword, profile_length, in png_handle_iCCP()
1491 (void)png_inflate_read(png_ptr, local_buffer, in png_handle_iCCP()
1496 if (length > 0 && !(png_ptr->flags & in png_handle_iCCP()
1508 png_chunk_warning(png_ptr, in png_handle_iCCP()
1512 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1517 png_icc_set_sRGB(png_ptr, in png_handle_iCCP()
1518 &png_ptr->colorspace, profile, in png_handle_iCCP()
1519 png_ptr->zstream.adler); in png_handle_iCCP()
1525 png_free_data(png_ptr, info_ptr, in png_handle_iCCP()
1529 png_malloc_base(png_ptr, in png_handle_iCCP()
1538 png_ptr->read_buffer = NULL; /*steal*/ in png_handle_iCCP()
1545 png_ptr->colorspace.flags |= in png_handle_iCCP()
1557 png_colorspace_sync(png_ptr, info_ptr); in png_handle_iCCP()
1561 png_ptr->zowner = 0; in png_handle_iCCP()
1571 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1579 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1593 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1596 png_ptr->zowner = 0; in png_handle_iCCP()
1600 errmsg = png_ptr->zstream.msg; in png_handle_iCCP()
1616 png_crc_finish(png_ptr, length); in png_handle_iCCP()
1618 png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; in png_handle_iCCP()
1619 png_colorspace_sync(png_ptr, info_ptr); in png_handle_iCCP()
1621 png_chunk_benign_error(png_ptr, errmsg); in png_handle_iCCP()
1627 png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sPLT() argument
1642 if (png_ptr->user_chunk_cache_max != 0) in png_handle_sPLT()
1644 if (png_ptr->user_chunk_cache_max == 1) in png_handle_sPLT()
1646 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1650 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_sPLT()
1652 png_warning(png_ptr, "No space in chunk cache for sPLT"); in png_handle_sPLT()
1653 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1659 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_sPLT()
1660 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sPLT()
1662 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_sPLT()
1664 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1665 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sPLT()
1672 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1673 png_chunk_benign_error(png_ptr, "too large to fit in memory"); in png_handle_sPLT()
1678 buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); in png_handle_sPLT()
1681 png_crc_finish(png_ptr, length); in png_handle_sPLT()
1682 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_sPLT()
1691 png_crc_read(png_ptr, buffer, length); in png_handle_sPLT()
1693 if (png_crc_finish(png_ptr, skip) != 0) in png_handle_sPLT()
1706 png_warning(png_ptr, "malformed sPLT chunk"); in png_handle_sPLT()
1720 png_warning(png_ptr, "sPLT chunk has bad length"); in png_handle_sPLT()
1729 png_warning(png_ptr, "sPLT chunk too long"); in png_handle_sPLT()
1736 png_ptr, new_palette.nentries * (sizeof (png_sPLT_entry))); in png_handle_sPLT()
1740 png_warning(png_ptr, "sPLT chunk requires too much memory"); in png_handle_sPLT()
1796 png_set_sPLT(png_ptr, info_ptr, &new_palette, 1); in png_handle_sPLT()
1798 png_free(png_ptr, new_palette.entries); in png_handle_sPLT()
1804 png_handle_tRNS(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_tRNS() argument
1810 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_tRNS()
1811 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_tRNS()
1813 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_tRNS()
1815 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1816 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_tRNS()
1822 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1823 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_tRNS()
1827 if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) in png_handle_tRNS()
1833 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1834 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tRNS()
1838 png_crc_read(png_ptr, buf, 2); in png_handle_tRNS()
1839 png_ptr->num_trans = 1; in png_handle_tRNS()
1840 png_ptr->trans_color.gray = png_get_uint_16(buf); in png_handle_tRNS()
1843 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) in png_handle_tRNS()
1849 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1850 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tRNS()
1854 png_crc_read(png_ptr, buf, length); in png_handle_tRNS()
1855 png_ptr->num_trans = 1; in png_handle_tRNS()
1856 png_ptr->trans_color.red = png_get_uint_16(buf); in png_handle_tRNS()
1857 png_ptr->trans_color.green = png_get_uint_16(buf + 2); in png_handle_tRNS()
1858 png_ptr->trans_color.blue = png_get_uint_16(buf + 4); in png_handle_tRNS()
1861 else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_tRNS()
1863 if ((png_ptr->mode & PNG_HAVE_PLTE) == 0) in png_handle_tRNS()
1866 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1867 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_tRNS()
1871 if (length > (unsigned int) png_ptr->num_palette || in png_handle_tRNS()
1875 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1876 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tRNS()
1880 png_crc_read(png_ptr, readbuf, length); in png_handle_tRNS()
1881 png_ptr->num_trans = (png_uint_16)length; in png_handle_tRNS()
1886 png_crc_finish(png_ptr, length); in png_handle_tRNS()
1887 png_chunk_benign_error(png_ptr, "invalid with alpha channel"); in png_handle_tRNS()
1891 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_tRNS()
1893 png_ptr->num_trans = 0; in png_handle_tRNS()
1901 png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans, in png_handle_tRNS()
1902 &(png_ptr->trans_color)); in png_handle_tRNS()
1908 png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_bKGD() argument
1916 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_bKGD()
1917 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_bKGD()
1919 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0 || in png_handle_bKGD()
1920 (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && in png_handle_bKGD()
1921 (png_ptr->mode & PNG_HAVE_PLTE) == 0)) in png_handle_bKGD()
1923 png_crc_finish(png_ptr, length); in png_handle_bKGD()
1924 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_bKGD()
1930 png_crc_finish(png_ptr, length); in png_handle_bKGD()
1931 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_bKGD()
1935 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_bKGD()
1938 else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) in png_handle_bKGD()
1946 png_crc_finish(png_ptr, length); in png_handle_bKGD()
1947 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_bKGD()
1951 png_crc_read(png_ptr, buf, truelen); in png_handle_bKGD()
1953 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_bKGD()
1961 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_handle_bKGD()
1969 png_chunk_benign_error(png_ptr, "invalid index"); in png_handle_bKGD()
1973 background.red = (png_uint_16)png_ptr->palette[buf[0]].red; in png_handle_bKGD()
1974 background.green = (png_uint_16)png_ptr->palette[buf[0]].green; in png_handle_bKGD()
1975 background.blue = (png_uint_16)png_ptr->palette[buf[0]].blue; in png_handle_bKGD()
1984 else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) /* GRAY */ in png_handle_bKGD()
2002 png_set_bKGD(png_ptr, info_ptr, &background); in png_handle_bKGD()
2008 png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_hIST() argument
2015 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_hIST()
2016 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_hIST()
2018 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0 || in png_handle_hIST()
2019 (png_ptr->mode & PNG_HAVE_PLTE) == 0) in png_handle_hIST()
2021 png_crc_finish(png_ptr, length); in png_handle_hIST()
2022 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_hIST()
2028 png_crc_finish(png_ptr, length); in png_handle_hIST()
2029 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_hIST()
2035 if (num != (unsigned int) png_ptr->num_palette || in png_handle_hIST()
2038 png_crc_finish(png_ptr, length); in png_handle_hIST()
2039 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_hIST()
2047 png_crc_read(png_ptr, buf, 2); in png_handle_hIST()
2051 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_hIST()
2054 png_set_hIST(png_ptr, info_ptr, readbuf); in png_handle_hIST()
2060 png_handle_pHYs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_pHYs() argument
2068 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_pHYs()
2069 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_pHYs()
2071 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_pHYs()
2073 png_crc_finish(png_ptr, length); in png_handle_pHYs()
2074 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_pHYs()
2080 png_crc_finish(png_ptr, length); in png_handle_pHYs()
2081 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_pHYs()
2087 png_crc_finish(png_ptr, length); in png_handle_pHYs()
2088 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_pHYs()
2092 png_crc_read(png_ptr, buf, 9); in png_handle_pHYs()
2094 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_pHYs()
2100 png_set_pHYs(png_ptr, info_ptr, res_x, res_y, unit_type); in png_handle_pHYs()
2106 png_handle_oFFs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_oFFs() argument
2114 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_oFFs()
2115 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_oFFs()
2117 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_oFFs()
2119 png_crc_finish(png_ptr, length); in png_handle_oFFs()
2120 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_oFFs()
2126 png_crc_finish(png_ptr, length); in png_handle_oFFs()
2127 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_oFFs()
2133 png_crc_finish(png_ptr, length); in png_handle_oFFs()
2134 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_oFFs()
2138 png_crc_read(png_ptr, buf, 9); in png_handle_oFFs()
2140 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_oFFs()
2146 png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, unit_type); in png_handle_oFFs()
2153 png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_pCAL() argument
2163 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_pCAL()
2164 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_pCAL()
2166 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_pCAL()
2168 png_crc_finish(png_ptr, length); in png_handle_pCAL()
2169 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_pCAL()
2175 png_crc_finish(png_ptr, length); in png_handle_pCAL()
2176 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_pCAL()
2183 buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); in png_handle_pCAL()
2187 png_crc_finish(png_ptr, length); in png_handle_pCAL()
2188 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_pCAL()
2192 png_crc_read(png_ptr, buffer, length); in png_handle_pCAL()
2194 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_pCAL()
2210 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_pCAL()
2230 png_chunk_benign_error(png_ptr, "invalid parameter count"); in png_handle_pCAL()
2236 png_chunk_benign_error(png_ptr, "unrecognized equation type"); in png_handle_pCAL()
2244 params = png_voidcast(png_charpp, png_malloc_warn(png_ptr, in png_handle_pCAL()
2249 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_pCAL()
2266 png_free(png_ptr, params); in png_handle_pCAL()
2267 png_chunk_benign_error(png_ptr, "invalid data"); in png_handle_pCAL()
2272 png_set_pCAL(png_ptr, info_ptr, (png_charp)buffer, X0, X1, type, nparams, in png_handle_pCAL()
2275 png_free(png_ptr, params); in png_handle_pCAL()
2282 png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_sCAL() argument
2290 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_sCAL()
2291 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_sCAL()
2293 else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_sCAL()
2295 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2296 png_chunk_benign_error(png_ptr, "out of place"); in png_handle_sCAL()
2302 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2303 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_sCAL()
2310 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2311 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_sCAL()
2318 buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); in png_handle_sCAL()
2322 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_sCAL()
2323 png_crc_finish(png_ptr, length); in png_handle_sCAL()
2327 png_crc_read(png_ptr, buffer, length); in png_handle_sCAL()
2330 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_sCAL()
2336 png_chunk_benign_error(png_ptr, "invalid unit"); in png_handle_sCAL()
2348 png_chunk_benign_error(png_ptr, "bad width format"); in png_handle_sCAL()
2351 png_chunk_benign_error(png_ptr, "non-positive width"); in png_handle_sCAL()
2360 png_chunk_benign_error(png_ptr, "bad height format"); in png_handle_sCAL()
2363 png_chunk_benign_error(png_ptr, "non-positive height"); in png_handle_sCAL()
2367 png_set_sCAL_s(png_ptr, info_ptr, buffer[0], in png_handle_sCAL()
2375 png_handle_tIME(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_tIME() argument
2382 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_tIME()
2383 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_tIME()
2387 png_crc_finish(png_ptr, length); in png_handle_tIME()
2388 png_chunk_benign_error(png_ptr, "duplicate"); in png_handle_tIME()
2392 if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_tIME()
2393 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_tIME()
2397 png_crc_finish(png_ptr, length); in png_handle_tIME()
2398 png_chunk_benign_error(png_ptr, "invalid"); in png_handle_tIME()
2402 png_crc_read(png_ptr, buf, 7); in png_handle_tIME()
2404 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_tIME()
2414 png_set_tIME(png_ptr, info_ptr, &mod_time); in png_handle_tIME()
2421 png_handle_tEXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_tEXt() argument
2432 if (png_ptr->user_chunk_cache_max != 0) in png_handle_tEXt()
2434 if (png_ptr->user_chunk_cache_max == 1) in png_handle_tEXt()
2436 png_crc_finish(png_ptr, length); in png_handle_tEXt()
2440 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_tEXt()
2442 png_crc_finish(png_ptr, length); in png_handle_tEXt()
2443 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_tEXt()
2449 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_tEXt()
2450 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_tEXt()
2452 if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_tEXt()
2453 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_tEXt()
2458 png_crc_finish(png_ptr, length); in png_handle_tEXt()
2459 png_chunk_benign_error(png_ptr, "too large to fit in memory"); in png_handle_tEXt()
2464 buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/); in png_handle_tEXt()
2468 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_tEXt()
2472 png_crc_read(png_ptr, buffer, length); in png_handle_tEXt()
2474 if (png_crc_finish(png_ptr, skip) != 0) in png_handle_tEXt()
2494 if (png_set_text_2(png_ptr, info_ptr, &text_info, 1) != 0) in png_handle_tEXt()
2495 png_warning(png_ptr, "Insufficient memory to process text chunk"); in png_handle_tEXt()
2502 png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_zTXt() argument
2511 if (png_ptr->user_chunk_cache_max != 0) in png_handle_zTXt()
2513 if (png_ptr->user_chunk_cache_max == 1) in png_handle_zTXt()
2515 png_crc_finish(png_ptr, length); in png_handle_zTXt()
2519 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_zTXt()
2521 png_crc_finish(png_ptr, length); in png_handle_zTXt()
2522 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_zTXt()
2528 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_zTXt()
2529 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_zTXt()
2531 if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_zTXt()
2532 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_zTXt()
2534 buffer = png_read_buffer(png_ptr, length, 2/*silent*/); in png_handle_zTXt()
2538 png_crc_finish(png_ptr, length); in png_handle_zTXt()
2539 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_zTXt()
2543 png_crc_read(png_ptr, buffer, length); in png_handle_zTXt()
2545 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_zTXt()
2575 if (png_decompress_chunk(png_ptr, length, keyword_length+2, in png_handle_zTXt()
2584 buffer = png_ptr->read_buffer; in png_handle_zTXt()
2595 if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0) in png_handle_zTXt()
2600 errmsg = png_ptr->zstream.msg; in png_handle_zTXt()
2604 png_chunk_benign_error(png_ptr, errmsg); in png_handle_zTXt()
2611 png_handle_iTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) in png_handle_iTXt() argument
2620 if (png_ptr->user_chunk_cache_max != 0) in png_handle_iTXt()
2622 if (png_ptr->user_chunk_cache_max == 1) in png_handle_iTXt()
2624 png_crc_finish(png_ptr, length); in png_handle_iTXt()
2628 if (--png_ptr->user_chunk_cache_max == 1) in png_handle_iTXt()
2630 png_crc_finish(png_ptr, length); in png_handle_iTXt()
2631 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_iTXt()
2637 if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_handle_iTXt()
2638 png_chunk_error(png_ptr, "missing IHDR"); in png_handle_iTXt()
2640 if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) in png_handle_iTXt()
2641 png_ptr->mode |= PNG_AFTER_IDAT; in png_handle_iTXt()
2643 buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/); in png_handle_iTXt()
2647 png_crc_finish(png_ptr, length); in png_handle_iTXt()
2648 png_chunk_benign_error(png_ptr, "out of memory"); in png_handle_iTXt()
2652 png_crc_read(png_ptr, buffer, length); in png_handle_iTXt()
2654 if (png_crc_finish(png_ptr, 0) != 0) in png_handle_iTXt()
2715 if (png_decompress_chunk(png_ptr, length, prefix_length, in png_handle_iTXt()
2717 buffer = png_ptr->read_buffer; in png_handle_iTXt()
2720 errmsg = png_ptr->zstream.msg; in png_handle_iTXt()
2745 if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0) in png_handle_iTXt()
2754 png_chunk_benign_error(png_ptr, errmsg); in png_handle_iTXt()
2761 png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length) in png_cache_unknown_chunk() argument
2765 if (png_ptr->unknown_chunk.data != NULL) in png_cache_unknown_chunk()
2767 png_free(png_ptr, png_ptr->unknown_chunk.data); in png_cache_unknown_chunk()
2768 png_ptr->unknown_chunk.data = NULL; in png_cache_unknown_chunk()
2772 if (png_ptr->user_chunk_malloc_max > 0 && in png_cache_unknown_chunk()
2773 png_ptr->user_chunk_malloc_max < limit) in png_cache_unknown_chunk()
2774 limit = png_ptr->user_chunk_malloc_max; in png_cache_unknown_chunk()
2783 PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name); in png_cache_unknown_chunk()
2785 png_ptr->unknown_chunk.size = (png_size_t)length/*SAFE*/; in png_cache_unknown_chunk()
2787 png_ptr->unknown_chunk.location = (png_byte)png_ptr->mode/*SAFE*/; in png_cache_unknown_chunk()
2790 png_ptr->unknown_chunk.data = NULL; in png_cache_unknown_chunk()
2795 png_ptr->unknown_chunk.data = png_voidcast(png_bytep, in png_cache_unknown_chunk()
2796 png_malloc_warn(png_ptr, length)); in png_cache_unknown_chunk()
2800 if (png_ptr->unknown_chunk.data == NULL && length > 0) in png_cache_unknown_chunk()
2803 png_crc_finish(png_ptr, length); in png_cache_unknown_chunk()
2804 png_chunk_benign_error(png_ptr, "unknown chunk exceeds memory limits"); in png_cache_unknown_chunk()
2811 png_crc_read(png_ptr, png_ptr->unknown_chunk.data, length); in png_cache_unknown_chunk()
2812 png_crc_finish(png_ptr, 0); in png_cache_unknown_chunk()
2820 png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr, in png_handle_unknown() argument
2841 keep = png_chunk_unknown_handling(png_ptr, png_ptr->chunk_name); in png_handle_unknown()
2853 if (png_ptr->read_user_chunk_fn != NULL) in png_handle_unknown()
2855 if (png_cache_unknown_chunk(png_ptr, length) != 0) in png_handle_unknown()
2858 int ret = (*(png_ptr->read_user_chunk_fn))(png_ptr, in png_handle_unknown()
2859 &png_ptr->unknown_chunk); in png_handle_unknown()
2871 png_chunk_error(png_ptr, "error in user chunk"); in png_handle_unknown()
2889 if (png_ptr->unknown_default < PNG_HANDLE_CHUNK_IF_SAFE) in png_handle_unknown()
2891 png_chunk_warning(png_ptr, "Saving unknown chunk:"); in png_handle_unknown()
2892 png_app_warning(png_ptr, in png_handle_unknown()
2926 keep = png_ptr->unknown_default; in png_handle_unknown()
2930 PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))) in png_handle_unknown()
2932 if (png_cache_unknown_chunk(png_ptr, length) == 0) in png_handle_unknown()
2937 png_crc_finish(png_ptr, length); in png_handle_unknown()
2952 png_app_error(png_ptr, "no unknown chunk support available"); in png_handle_unknown()
2954 png_crc_finish(png_ptr, length); in png_handle_unknown()
2964 PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))) in png_handle_unknown()
2967 switch (png_ptr->user_chunk_cache_max) in png_handle_unknown()
2970 png_ptr->user_chunk_cache_max = 1; in png_handle_unknown()
2971 png_chunk_benign_error(png_ptr, "no space in chunk cache"); in png_handle_unknown()
2980 --(png_ptr->user_chunk_cache_max); in png_handle_unknown()
2987 png_set_unknown_chunks(png_ptr, info_ptr, in png_handle_unknown()
2988 &png_ptr->unknown_chunk, 1); in png_handle_unknown()
3003 if (png_ptr->unknown_chunk.data != NULL) in png_handle_unknown()
3004 png_free(png_ptr, png_ptr->unknown_chunk.data); in png_handle_unknown()
3005 png_ptr->unknown_chunk.data = NULL; in png_handle_unknown()
3009 png_crc_finish(png_ptr, length); in png_handle_unknown()
3015 if (handled == 0 && PNG_CHUNK_CRITICAL(png_ptr->chunk_name)) in png_handle_unknown()
3016 png_chunk_error(png_ptr, "unhandled critical chunk"); in png_handle_unknown()
3032 png_check_chunk_name(png_structrp png_ptr, png_uint_32 chunk_name) in png_check_chunk_name() argument
3043 png_chunk_error(png_ptr, "invalid chunk type"); in png_check_chunk_name()
3057 png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display) in png_combine_row() argument
3059 unsigned int pixel_depth = png_ptr->transformed_pixel_depth; in png_combine_row()
3060 png_const_bytep sp = png_ptr->row_buf + 1; in png_combine_row()
3061 png_alloc_size_t row_width = png_ptr->width; in png_combine_row()
3062 unsigned int pass = png_ptr->pass; in png_combine_row()
3073 png_error(png_ptr, "internal row logic error"); in png_combine_row()
3079 if (png_ptr->info_rowbytes != 0 && png_ptr->info_rowbytes != in png_combine_row()
3081 png_error(png_ptr, "internal row size calculation error"); in png_combine_row()
3085 png_error(png_ptr, "internal row width error"); in png_combine_row()
3098 if ((png_ptr->transformations & PNG_PACKSWAP) != 0) in png_combine_row()
3115 if (png_ptr->interlaced != 0 && in png_combine_row()
3116 (png_ptr->transformations & PNG_INTERLACE) != 0 && in png_combine_row()
3262 if ((png_ptr->transformations & PNG_PACKSWAP) != 0) in png_combine_row()
3308 png_error(png_ptr, "invalid user transform pixel depth"); in png_combine_row()
3997 png_read_IDAT_data(png_structrp png_ptr, png_bytep output, in png_read_IDAT_data() argument
4001 png_ptr->zstream.next_out = output; in png_read_IDAT_data()
4002 png_ptr->zstream.avail_out = 0; /* safety: set below */ in png_read_IDAT_data()
4012 if (png_ptr->zstream.avail_in == 0) in png_read_IDAT_data()
4017 while (png_ptr->idat_size == 0) in png_read_IDAT_data()
4019 png_crc_finish(png_ptr, 0); in png_read_IDAT_data()
4021 png_ptr->idat_size = png_read_chunk_header(png_ptr); in png_read_IDAT_data()
4025 if (png_ptr->chunk_name != png_IDAT) in png_read_IDAT_data()
4026 png_error(png_ptr, "Not enough image data"); in png_read_IDAT_data()
4029 avail_in = png_ptr->IDAT_read_size; in png_read_IDAT_data()
4031 if (avail_in > png_ptr->idat_size) in png_read_IDAT_data()
4032 avail_in = (uInt)png_ptr->idat_size; in png_read_IDAT_data()
4039 buffer = png_read_buffer(png_ptr, avail_in, 0/*error*/); in png_read_IDAT_data()
4041 png_crc_read(png_ptr, buffer, avail_in); in png_read_IDAT_data()
4042 png_ptr->idat_size -= avail_in; in png_read_IDAT_data()
4044 png_ptr->zstream.next_in = buffer; in png_read_IDAT_data()
4045 png_ptr->zstream.avail_in = avail_in; in png_read_IDAT_data()
4057 png_ptr->zstream.avail_out = out; in png_read_IDAT_data()
4062 png_ptr->zstream.next_out = tmpbuf; in png_read_IDAT_data()
4063 png_ptr->zstream.avail_out = (sizeof tmpbuf); in png_read_IDAT_data()
4073 ret = PNG_INFLATE(png_ptr, Z_NO_FLUSH); in png_read_IDAT_data()
4077 avail_out += png_ptr->zstream.avail_out; in png_read_IDAT_data()
4080 avail_out += (sizeof tmpbuf) - png_ptr->zstream.avail_out; in png_read_IDAT_data()
4082 png_ptr->zstream.avail_out = 0; in png_read_IDAT_data()
4087 png_ptr->zstream.next_out = NULL; in png_read_IDAT_data()
4089 png_ptr->mode |= PNG_AFTER_IDAT; in png_read_IDAT_data()
4090 png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; in png_read_IDAT_data()
4092 if (png_ptr->zstream.avail_in > 0 || png_ptr->idat_size > 0) in png_read_IDAT_data()
4093 png_chunk_benign_error(png_ptr, "Extra compressed data"); in png_read_IDAT_data()
4099 png_zstream_error(png_ptr, ret); in png_read_IDAT_data()
4102 png_chunk_error(png_ptr, png_ptr->zstream.msg); in png_read_IDAT_data()
4106 png_chunk_benign_error(png_ptr, png_ptr->zstream.msg); in png_read_IDAT_data()
4118 png_error(png_ptr, "Not enough image data"); in png_read_IDAT_data()
4121 png_chunk_benign_error(png_ptr, "Too much image data"); in png_read_IDAT_data()
4126 png_read_finish_IDAT(png_structrp png_ptr) in png_read_finish_IDAT() argument
4133 if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0) in png_read_finish_IDAT()
4139 png_read_IDAT_data(png_ptr, NULL, 0); in png_read_finish_IDAT()
4140 png_ptr->zstream.next_out = NULL; /* safety */ in png_read_finish_IDAT()
4145 if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0) in png_read_finish_IDAT()
4147 png_ptr->mode |= PNG_AFTER_IDAT; in png_read_finish_IDAT()
4148 png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; in png_read_finish_IDAT()
4155 if (png_ptr->zowner == png_IDAT) in png_read_finish_IDAT()
4158 png_ptr->zstream.next_in = NULL; in png_read_finish_IDAT()
4159 png_ptr->zstream.avail_in = 0; in png_read_finish_IDAT()
4162 png_ptr->zowner = 0; in png_read_finish_IDAT()
4169 (void)png_crc_finish(png_ptr, png_ptr->idat_size); in png_read_finish_IDAT()
4174 png_read_finish_row(png_structrp png_ptr) in png_read_finish_row() argument
4191 png_ptr->row_number++; in png_read_finish_row()
4192 if (png_ptr->row_number < png_ptr->num_rows) in png_read_finish_row()
4195 if (png_ptr->interlaced != 0) in png_read_finish_row()
4197 png_ptr->row_number = 0; in png_read_finish_row()
4202 memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1); in png_read_finish_row()
4206 png_ptr->pass++; in png_read_finish_row()
4208 if (png_ptr->pass >= 7) in png_read_finish_row()
4211 png_ptr->iwidth = (png_ptr->width + in png_read_finish_row()
4212 png_pass_inc[png_ptr->pass] - 1 - in png_read_finish_row()
4213 png_pass_start[png_ptr->pass]) / in png_read_finish_row()
4214 png_pass_inc[png_ptr->pass]; in png_read_finish_row()
4216 if ((png_ptr->transformations & PNG_INTERLACE) == 0) in png_read_finish_row()
4218 png_ptr->num_rows = (png_ptr->height + in png_read_finish_row()
4219 png_pass_yinc[png_ptr->pass] - 1 - in png_read_finish_row()
4220 png_pass_ystart[png_ptr->pass]) / in png_read_finish_row()
4221 png_pass_yinc[png_ptr->pass]; in png_read_finish_row()
4227 } while (png_ptr->num_rows == 0 || png_ptr->iwidth == 0); in png_read_finish_row()
4229 if (png_ptr->pass < 7) in png_read_finish_row()
4234 png_read_finish_IDAT(png_ptr); in png_read_finish_row()
4239 png_read_start_row(png_structrp png_ptr) in png_read_start_row() argument
4261 png_init_read_transformations(png_ptr); in png_read_start_row()
4263 if (png_ptr->interlaced != 0) in png_read_start_row()
4265 if ((png_ptr->transformations & PNG_INTERLACE) == 0) in png_read_start_row()
4266 png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 - in png_read_start_row()
4270 png_ptr->num_rows = png_ptr->height; in png_read_start_row()
4272 png_ptr->iwidth = (png_ptr->width + in png_read_start_row()
4273 png_pass_inc[png_ptr->pass] - 1 - in png_read_start_row()
4274 png_pass_start[png_ptr->pass]) / in png_read_start_row()
4275 png_pass_inc[png_ptr->pass]; in png_read_start_row()
4280 png_ptr->num_rows = png_ptr->height; in png_read_start_row()
4281 png_ptr->iwidth = png_ptr->width; in png_read_start_row()
4284 max_pixel_depth = png_ptr->pixel_depth; in png_read_start_row()
4297 if ((png_ptr->transformations & PNG_PACK) != 0 && png_ptr->bit_depth < 8) in png_read_start_row()
4302 if ((png_ptr->transformations & PNG_EXPAND) != 0) in png_read_start_row()
4304 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_read_start_row()
4306 if (png_ptr->num_trans != 0) in png_read_start_row()
4313 else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) in png_read_start_row()
4318 if (png_ptr->num_trans != 0) in png_read_start_row()
4322 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) in png_read_start_row()
4324 if (png_ptr->num_trans != 0) in png_read_start_row()
4334 if ((png_ptr->transformations & PNG_EXPAND_16) != 0) in png_read_start_row()
4340 if ((png_ptr->transformations & PNG_EXPAND) != 0) in png_read_start_row()
4342 if (png_ptr->bit_depth < 16) in png_read_start_row()
4347 png_ptr->transformations &= ~PNG_EXPAND_16; in png_read_start_row()
4352 if ((png_ptr->transformations & (PNG_FILLER)) != 0) in png_read_start_row()
4354 if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) in png_read_start_row()
4363 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB || in png_read_start_row()
4364 png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_read_start_row()
4376 if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0) in png_read_start_row()
4380 (png_ptr->num_trans != 0 && in png_read_start_row()
4381 (png_ptr->transformations & PNG_EXPAND) != 0) || in png_read_start_row()
4384 (png_ptr->transformations & (PNG_FILLER)) != 0 || in png_read_start_row()
4386 png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) in png_read_start_row()
4399 if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) in png_read_start_row()
4406 else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) in png_read_start_row()
4417 if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0) in png_read_start_row()
4419 int user_pixel_depth = png_ptr->user_transform_depth * in png_read_start_row()
4420 png_ptr->user_transform_channels; in png_read_start_row()
4430 png_ptr->maximum_pixel_depth = (png_byte)max_pixel_depth; in png_read_start_row()
4431 png_ptr->transformed_pixel_depth = 0; /* calculated on demand */ in png_read_start_row()
4436 row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7)); in png_read_start_row()
4445 png_error(png_ptr, "This image requires a row greater than 64KB"); in png_read_start_row()
4448 if (row_bytes + 48 > png_ptr->old_big_row_buf_size) in png_read_start_row()
4450 png_free(png_ptr, png_ptr->big_row_buf); in png_read_start_row()
4451 png_free(png_ptr, png_ptr->big_prev_row); in png_read_start_row()
4453 if (png_ptr->interlaced != 0) in png_read_start_row()
4454 png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr, in png_read_start_row()
4458 png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48); in png_read_start_row()
4460 png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48); in png_read_start_row()
4471 png_bytep temp = png_ptr->big_row_buf + 32; in png_read_start_row()
4473 png_ptr->row_buf = temp - extra - 1/*filter byte*/; in png_read_start_row()
4475 temp = png_ptr->big_prev_row + 32; in png_read_start_row()
4477 png_ptr->prev_row = temp - extra - 1/*filter byte*/; in png_read_start_row()
4482 png_ptr->row_buf = png_ptr->big_row_buf + 31; in png_read_start_row()
4483 png_ptr->prev_row = png_ptr->big_prev_row + 31; in png_read_start_row()
4485 png_ptr->old_big_row_buf_size = row_bytes + 48; in png_read_start_row()
4489 if (png_ptr->rowbytes > 65535) in png_read_start_row()
4490 png_error(png_ptr, "This image requires a row greater than 64KB"); in png_read_start_row()
4493 if (png_ptr->rowbytes > (PNG_SIZE_MAX - 1)) in png_read_start_row()
4494 png_error(png_ptr, "Row has too many bytes to allocate in memory"); in png_read_start_row()
4496 memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1); in png_read_start_row()
4498 png_debug1(3, "width = %u,", png_ptr->width); in png_read_start_row()
4499 png_debug1(3, "height = %u,", png_ptr->height); in png_read_start_row()
4500 png_debug1(3, "iwidth = %u,", png_ptr->iwidth); in png_read_start_row()
4501 png_debug1(3, "num_rows = %u,", png_ptr->num_rows); in png_read_start_row()
4502 png_debug1(3, "rowbytes = %lu,", (unsigned long)png_ptr->rowbytes); in png_read_start_row()
4504 (unsigned long)PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1); in png_read_start_row()
4510 if (png_ptr->read_buffer != 0) in png_read_start_row()
4512 png_bytep buffer = png_ptr->read_buffer; in png_read_start_row()
4514 png_ptr->read_buffer_size = 0; in png_read_start_row()
4515 png_ptr->read_buffer = NULL; in png_read_start_row()
4516 png_free(png_ptr, buffer); in png_read_start_row()
4524 if (png_inflate_claim(png_ptr, png_IDAT) != Z_OK) in png_read_start_row()
4525 png_error(png_ptr, png_ptr->zstream.msg); in png_read_start_row()
4527 png_ptr->flags |= PNG_FLAG_ROW_INIT; in png_read_start_row()