diff options
Diffstat (limited to 'src/plugins/old/real_extractor.c')
| -rw-r--r-- | src/plugins/old/real_extractor.c | 439 |
1 files changed, 0 insertions, 439 deletions
diff --git a/src/plugins/old/real_extractor.c b/src/plugins/old/real_extractor.c deleted file mode 100644 index cfac031..0000000 --- a/src/plugins/old/real_extractor.c +++ /dev/null @@ -1,439 +0,0 @@ -/* - This file is part of libextractor. - Copyright (C) 2002, 2003, 2009 Vidyut Samanta and Christian Grothoff - - libextractor is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 2, or (at your - option) any later version. - - libextractor is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with libextractor; see the file COPYING. If not, write to the - Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. - */ - -#include "platform.h" -#include "extractor.h" -#include <stdint.h> - -#define UINT32 uint32_t -#define UINT16 uint16_t -#define UINT8 uint8_t - -typedef struct -{ - UINT32 object_id; - UINT32 size; - UINT16 object_version; /* must be 0 */ - UINT16 stream_number; - UINT32 max_bit_rate; - UINT32 avg_bit_rate; - UINT32 max_packet_size; - UINT32 avg_packet_size; - UINT32 start_time; - UINT32 preroll; - UINT32 duration; - UINT8 stream_name_size; - UINT8 data[0]; /* variable length section */ - /* - UINT8[stream_name_size] stream_name; - UINT8 mime_type_size; - UINT8[mime_type_size] mime_type; - UINT32 type_specific_len; - UINT8[type_specific_len] type_specific_data; - */ -} Media_Properties; - -typedef struct -{ - UINT32 object_id; - UINT32 size; - UINT16 object_version; /* must be 0 */ - UINT16 title_len; - UINT8 data[0]; /* variable length section */ - /* - UINT8[title_len] title; - UINT16 author_len; - UINT8[author_len] author; - UINT16 copyright_len; - UINT8[copyright_len] copyright; - UINT16 comment_len; - UINT8[comment_len] comment; - */ -} Content_Description; -/* author, copyright and comment are supposed to be ASCII */ - -#define REAL_HEADER 0x2E524d46 -#define MDPR_HEADER 0x4D445052 -#define CONT_HEADER 0x434F4e54 - -#define RAFF4_HEADER 0x2E7261FD - - -static int -processMediaProperties (const Media_Properties *prop, - EXTRACTOR_MetaDataProcessor proc, - void *proc_cls) -{ - - UINT8 mime_type_size; - UINT32 prop_size; - - prop_size = ntohl (prop->size); - if (prop_size <= sizeof (Media_Properties)) - return 0; - if (0 != prop->object_version) - return 0; - if (prop_size <= prop->stream_name_size + sizeof (UINT8) - + sizeof (Media_Properties)) - return 0; - - mime_type_size = prop->data[prop->stream_name_size]; - if (prop_size > prop->stream_name_size + sizeof (UINT8) - + +mime_type_size + sizeof (Media_Properties)) - { - char data[mime_type_size + 1]; - memcpy (data, &prop->data[prop->stream_name_size + 1], mime_type_size); - data[mime_type_size] = '\0'; - - return proc (proc_cls, - "real", - EXTRACTOR_METATYPE_MIMETYPE, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - data, - strlen (data)); - } - return 0; -} - - -static int -processContentDescription (const Content_Description *prop, - EXTRACTOR_MetaDataProcessor proc, - void *proc_cls) -{ - UINT16 author_len; - UINT16 copyright_len; - UINT16 comment_len; - UINT16 title_len; - char *title; - char *author; - char *copyright; - char *comment; - UINT32 prop_size; - int ret; - - prop_size = ntohl (prop->size); - if (prop_size <= sizeof (Content_Description)) - return 0; - if (0 != prop->object_version) - return 0; - title_len = ntohs (prop->title_len); - if (prop_size <= title_len + sizeof (UINT16) + sizeof (Content_Description)) - return 0; - author_len = ntohs (*(UINT16 *) &prop->data[title_len]); - if (prop_size <= title_len + sizeof (UINT16) - + author_len + sizeof (Content_Description)) - return 0; - - copyright_len = ntohs (*(UINT16 *) &prop->data[title_len - + author_len - + sizeof (UINT16)]); - - if (prop_size <= title_len + 2 * sizeof (UINT16) - + author_len + copyright_len + sizeof (Content_Description)) - return 0; - - comment_len = ntohs (*(UINT16 *) &prop->data[title_len - + author_len - + copyright_len - + 2 * sizeof (UINT16)]); - - if (prop_size < title_len + 3 * sizeof (UINT16) - + author_len + copyright_len + comment_len - + sizeof (Content_Description)) - return 0; - - ret = 0; - title = malloc (title_len + 1); - if (title != NULL) - { - memcpy (title, &prop->data[0], title_len); - title[title_len] = '\0'; - ret = proc (proc_cls, - "real", - EXTRACTOR_METATYPE_TITLE, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - title, - strlen (title) + 1); - free (title); - } - if (ret != 0) - return ret; - - author = malloc (author_len + 1); - if (author != NULL) - { - memcpy (author, &prop->data[title_len + sizeof (UINT16)], author_len); - author[author_len] = '\0'; - ret = proc (proc_cls, - "real", - EXTRACTOR_METATYPE_AUTHOR_NAME, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - author, - strlen (author) + 1); - free (author); - } - if (ret != 0) - return ret; - - copyright = malloc (copyright_len + 1); - if (copyright != NULL) - { - memcpy (copyright, - &prop->data[title_len + sizeof (UINT16) * 2 + author_len], - copyright_len); - copyright[copyright_len] = '\0'; - ret = proc (proc_cls, - "real", - EXTRACTOR_METATYPE_COPYRIGHT, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - copyright, - strlen (copyright) + 1); - free (copyright); - } - if (ret != 0) - return ret; - - comment = malloc (comment_len + 1); - if (comment != NULL) - { - memcpy (comment, - &prop->data[title_len + sizeof (UINT16) * 3 + author_len - + copyright_len], comment_len); - comment[comment_len] = '\0'; - ret = proc (proc_cls, - "real", - EXTRACTOR_METATYPE_COMMENT, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - comment, - strlen (comment) + 1); - free (comment); - } - if (ret != 0) - return ret; - return 0; -} - - -typedef struct RAFF4_header -{ - unsigned short version; - unsigned short revision; - unsigned short header_length; - unsigned short compression_type; - unsigned int granularity; - unsigned int total_bytes; - unsigned int bytes_per_minute; - unsigned int bytes_per_minute2; - unsigned short interleave_factor; - unsigned short interleave_block_size; - unsigned int user_data; - float sample_rate; - unsigned short sample_size; - unsigned short channels; - unsigned char interleave_code[5]; - unsigned char compression_code[5]; - unsigned char is_interleaved; - unsigned char copy_byte; - unsigned char stream_type; - /* - unsigned char tlen; - unsigned char title[tlen]; - unsigned char alen; - unsigned char author[alen]; - unsigned char clen; - unsigned char copyright[clen]; - unsigned char aplen; - unsigned char app[aplen]; */ -} RAFF4_header; - -#define RAFF4_HDR_SIZE 53 - -static char * -stndup (const char *str, size_t n) -{ - char *tmp; - tmp = malloc (n + 1); - if (tmp == NULL) - return NULL; - tmp[n] = '\0'; - memcpy (tmp, str, n); - return tmp; -} - - -/* audio/vnd.rn-realaudio */ -int -EXTRACTOR_real_extract (const unsigned char *data, - size_t size, - EXTRACTOR_MetaDataProcessor proc, - void *proc_cls, - const char *options) -{ - const unsigned char *pos; - const unsigned char *end; - unsigned int length; - const RAFF4_header *hdr; - unsigned char tlen; - unsigned char alen; - unsigned char clen; - unsigned char aplen; - char *x; - int ret; - - if (size <= 2 * sizeof (int)) - return 0; - if (RAFF4_HEADER == ntohl (*(int *) data)) - { - /* HELIX */ - if (size <= RAFF4_HDR_SIZE + 16 + 4) - return 0; - if (0 != proc (proc_cls, - "real", - EXTRACTOR_METATYPE_MIMETYPE, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - "audio/vnd.rn-realaudio", - strlen ("audio/vnd.rn-realaudio") + 1)) - return 1; - hdr = (const RAFF4_header *) &data[16]; - if (ntohs (hdr->header_length) + 16 > size) - return 0; - tlen = data[16 + RAFF4_HDR_SIZE]; - if (tlen + RAFF4_HDR_SIZE + 20 > size) - return 0; - alen = data[17 + tlen + RAFF4_HDR_SIZE]; - if (tlen + alen + RAFF4_HDR_SIZE + 20 > size) - return 0; - clen = data[18 + tlen + alen + RAFF4_HDR_SIZE]; - if (tlen + alen + clen + RAFF4_HDR_SIZE + 20 > size) - return 0; - aplen = data[19 + tlen + clen + alen + RAFF4_HDR_SIZE]; - if (tlen + alen + clen + aplen + RAFF4_HDR_SIZE + 20 > size) - return 0; - ret = 0; - if ( (tlen > 0) && (ret == 0) ) - { - x = stndup ((const char *) &data[17 + RAFF4_HDR_SIZE], tlen); - if (x != NULL) - { - ret = proc (proc_cls, - "real", - EXTRACTOR_METATYPE_MIMETYPE, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - x, - strlen (x) + 1); - free (x); - } - } - if ( (alen > 0) && (ret == 0) ) - { - x = stndup ((const char *) &data[18 + RAFF4_HDR_SIZE + tlen], alen); - if (x != NULL) - { - ret = proc (proc_cls, - "real", - EXTRACTOR_METATYPE_MIMETYPE, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - x, - strlen (x) + 1); - free (x); - } - } - if ( (clen > 0) && (ret == 0) ) - { - x = stndup ((const char *) &data[19 + RAFF4_HDR_SIZE + tlen + alen], - clen); - if (x != NULL) - { - ret = proc (proc_cls, - "real", - EXTRACTOR_METATYPE_MIMETYPE, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - x, - strlen (x) + 1); - free (x); - } - } - if ( (aplen > 0) && (ret == 0) ) - { - x = stndup ((const char *) &data[20 + RAFF4_HDR_SIZE + tlen + alen - + clen], aplen); - if (x != NULL) - { - ret = proc (proc_cls, - "real", - EXTRACTOR_METATYPE_MIMETYPE, - EXTRACTOR_METAFORMAT_UTF8, - "text/plain", - x, - strlen (x) + 1); - free (x); - } - } - return ret; - } - if (REAL_HEADER == ntohl (*(int *) data)) - { - /* old real */ - end = &data[size]; - pos = &data[0]; - ret = 0; - while (0 == ret) - { - if ((pos + 8 >= end) || (pos + 8 < pos)) - break; - length = ntohl (*(((unsigned int *) pos) + 1)); - if (length <= 0) - break; - if ((pos + length >= end) || (pos + length < pos)) - break; - switch (ntohl (*((unsigned int *) pos))) - { - case MDPR_HEADER: - ret = processMediaProperties ((Media_Properties *) pos, - proc, - proc_cls); - pos += length; - break; - case CONT_HEADER: - ret = processContentDescription ((Content_Description *) pos, - proc, - proc_cls); - pos += length; - break; - case REAL_HEADER: /* treat like default */ - default: - pos += length; - break; - } - } - return ret; - } - return 0; -} |