1.1 --- a/gst-plugins-nuvdemux/typefind/gsttypefindfunctions.c Tue May 01 17:03:38 2007 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,2808 +0,0 @@
1.4 -/* GStreamer
1.5 - * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
1.6 - *
1.7 - * gsttypefindfunctions.c: collection of various typefind functions
1.8 - *
1.9 - * This library is free software; you can redistribute it and/or
1.10 - * modify it under the terms of the GNU Library General Public
1.11 - * License as published by the Free Software Foundation; either
1.12 - * version 2 of the License, or (at your option) any later version.
1.13 - *
1.14 - * This library is distributed in the hope that it will be useful,
1.15 - * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1.17 - * Library General Public License for more details.
1.18 - *
1.19 - * You should have received a copy of the GNU Library General Public
1.20 - * License along with this library; if not, write to the
1.21 - * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
1.22 - * Boston, MA 02111-1307, USA.
1.23 - */
1.24 -
1.25 -#ifdef HAVE_CONFIG_H
1.26 -#include "config.h"
1.27 -#endif
1.28 -
1.29 -#include <glib/gstrfuncs.h>
1.30 -
1.31 -#include <gst/gsttypefind.h>
1.32 -#include <gst/gstelement.h>
1.33 -#include <gst/gstversion.h>
1.34 -#include <gst/gstinfo.h>
1.35 -#include <gst/gstutils.h>
1.36 -
1.37 -#include <string.h>
1.38 -#include <ctype.h>
1.39 -
1.40 -GST_DEBUG_CATEGORY_STATIC (type_find_debug);
1.41 -#define GST_CAT_DEFAULT type_find_debug
1.42 -
1.43 -/*** text/plain ***/
1.44 -static gboolean xml_check_first_element (GstTypeFind * tf,
1.45 - const gchar * element, guint elen, gboolean strict);
1.46 -
1.47 -
1.48 -static GstStaticCaps utf8_caps = GST_STATIC_CAPS ("text/plain");
1.49 -
1.50 -#define UTF8_CAPS gst_static_caps_get(&utf8_caps)
1.51 -
1.52 -static gboolean
1.53 -utf8_type_find_have_valid_utf8_at_offset (GstTypeFind * tf, guint64 offset,
1.54 - GstTypeFindProbability * prob)
1.55 -{
1.56 - guint8 *data;
1.57 -
1.58 - /* randomly decided values */
1.59 - guint min_size = 16; /* minimum size */
1.60 - guint size = 32 * 1024; /* starting size */
1.61 - guint probability = 95; /* starting probability */
1.62 - guint step = 10; /* how much we reduce probability in each
1.63 - * iteration */
1.64 -
1.65 - while (probability > step && size > min_size) {
1.66 - data = gst_type_find_peek (tf, offset, size);
1.67 - if (data) {
1.68 - gchar *end;
1.69 - gchar *start = (gchar *) data;
1.70 -
1.71 - if (g_utf8_validate (start, size, (const gchar **) &end) || (end - start + 4 > size)) { /* allow last char to be cut off */
1.72 - *prob = probability;
1.73 - return TRUE;
1.74 - }
1.75 - *prob = 0;
1.76 - return FALSE;
1.77 - }
1.78 - size /= 2;
1.79 - probability -= step;
1.80 - }
1.81 - *prob = 0;
1.82 - return FALSE;
1.83 -}
1.84 -
1.85 -static void
1.86 -utf8_type_find (GstTypeFind * tf, gpointer unused)
1.87 -{
1.88 - GstTypeFindProbability start_prob, mid_prob;
1.89 - guint64 length;
1.90 -
1.91 - /* leave xml to the xml typefinders */
1.92 - if (xml_check_first_element (tf, "", 0, TRUE))
1.93 - return;
1.94 -
1.95 - /* check beginning of stream */
1.96 - if (!utf8_type_find_have_valid_utf8_at_offset (tf, 0, &start_prob))
1.97 - return;
1.98 -
1.99 - GST_LOG ("start is plain text with probability of %u", start_prob);
1.100 -
1.101 - /* POSSIBLE is the highest probability we ever return if we can't
1.102 - * probe into the middle of the file and don't know its length */
1.103 -
1.104 - length = gst_type_find_get_length (tf);
1.105 - if (length == 0 || length == (guint64) - 1) {
1.106 - gst_type_find_suggest (tf, MIN (start_prob, GST_TYPE_FIND_POSSIBLE),
1.107 - UTF8_CAPS);
1.108 - return;
1.109 - }
1.110 -
1.111 - if (length < 64 * 1024) {
1.112 - gst_type_find_suggest (tf, start_prob, UTF8_CAPS);
1.113 - return;
1.114 - }
1.115 -
1.116 - /* check middle of stream */
1.117 - if (!utf8_type_find_have_valid_utf8_at_offset (tf, length / 2, &mid_prob))
1.118 - return;
1.119 -
1.120 - GST_LOG ("middle is plain text with probability of %u", mid_prob);
1.121 - gst_type_find_suggest (tf, (start_prob + mid_prob) / 2, UTF8_CAPS);
1.122 -}
1.123 -
1.124 -/*** text/uri-list ***/
1.125 -
1.126 -static GstStaticCaps uri_caps = GST_STATIC_CAPS ("text/uri-list");
1.127 -
1.128 -#define URI_CAPS (gst_static_caps_get(&uri_caps))
1.129 -#define BUFFER_SIZE 16 /* If the string is < 16 bytes we're screwed */
1.130 -#define INC_BUFFER { \
1.131 - pos++; \
1.132 - if (pos == BUFFER_SIZE) { \
1.133 - pos = 0; \
1.134 - offset += BUFFER_SIZE; \
1.135 - data = gst_type_find_peek (tf, offset, BUFFER_SIZE); \
1.136 - if (data == NULL) return; \
1.137 - } else { \
1.138 - data++; \
1.139 - } \
1.140 -}
1.141 -static void
1.142 -uri_type_find (GstTypeFind * tf, gpointer unused)
1.143 -{
1.144 - guint8 *data = gst_type_find_peek (tf, 0, BUFFER_SIZE);
1.145 - guint pos = 0;
1.146 - guint offset = 0;
1.147 -
1.148 - if (data) {
1.149 - /* Search for # comment lines */
1.150 - while (*data == '#') {
1.151 - /* Goto end of line */
1.152 - while (*data != '\n') {
1.153 - INC_BUFFER;
1.154 - }
1.155 -
1.156 - INC_BUFFER;
1.157 - }
1.158 -
1.159 - if (!g_ascii_isalpha (*data)) {
1.160 - /* Had a non alpha char - can't be uri-list */
1.161 - return;
1.162 - }
1.163 -
1.164 - INC_BUFFER;
1.165 -
1.166 - while (g_ascii_isalnum (*data)) {
1.167 - INC_BUFFER;
1.168 - }
1.169 -
1.170 - if (*data != ':') {
1.171 - /* First non alpha char is not a : */
1.172 - return;
1.173 - }
1.174 -
1.175 - /* Get the next 2 bytes as well */
1.176 - data = gst_type_find_peek (tf, offset + pos, 3);
1.177 - if (data == NULL)
1.178 - return;
1.179 -
1.180 - if (data[1] != '/' && data[2] != '/') {
1.181 - return;
1.182 - }
1.183 -
1.184 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, URI_CAPS);
1.185 - }
1.186 -}
1.187 -
1.188 -
1.189 -/*** application/xml **********************************************************/
1.190 -
1.191 -#define XML_BUFFER_SIZE 16
1.192 -#define XML_INC_BUFFER { \
1.193 - pos++; \
1.194 - if (pos == XML_BUFFER_SIZE) { \
1.195 - pos = 0; \
1.196 - offset += XML_BUFFER_SIZE; \
1.197 - data = gst_type_find_peek (tf, offset, XML_BUFFER_SIZE); \
1.198 - if (data == NULL) return FALSE; \
1.199 - } else { \
1.200 - data++; \
1.201 - } \
1.202 -}
1.203 -
1.204 -static gboolean
1.205 -xml_check_first_element (GstTypeFind * tf, const gchar * element, guint elen,
1.206 - gboolean strict)
1.207 -{
1.208 - gboolean got_xmldec;
1.209 - guint8 *data;
1.210 - guint offset = 0;
1.211 - guint pos = 0;
1.212 -
1.213 - data = gst_type_find_peek (tf, 0, XML_BUFFER_SIZE);
1.214 - if (!data)
1.215 - return FALSE;
1.216 -
1.217 - /* look for the XMLDec
1.218 - * see XML spec 2.8, Prolog and Document Type Declaration
1.219 - * http://www.w3.org/TR/2004/REC-xml-20040204/#sec-prolog-dtd */
1.220 - got_xmldec = (memcmp (data, "<?xml", 5) == 0);
1.221 -
1.222 - if (strict && !got_xmldec)
1.223 - return FALSE;
1.224 -
1.225 - /* skip XMLDec in any case if we've got one */
1.226 - if (got_xmldec) {
1.227 - pos += 5;
1.228 - data += 5;
1.229 - }
1.230 -
1.231 - /* look for the first element, it has to be the requested element. Bail
1.232 - * out if it is not within the first 4kB. */
1.233 - while (data && (offset + pos) < 4096) {
1.234 - while (*data != '<' && (offset + pos) < 4096) {
1.235 - XML_INC_BUFFER;
1.236 - }
1.237 -
1.238 - XML_INC_BUFFER;
1.239 - if (!g_ascii_isalpha (*data)) {
1.240 - /* if not alphabetic, it's a PI or an element / attribute declaration
1.241 - * like <?xxx or <!xxx */
1.242 - XML_INC_BUFFER;
1.243 - continue;
1.244 - }
1.245 -
1.246 - /* the first normal element, check if it's the one asked for */
1.247 - data = gst_type_find_peek (tf, offset + pos, elen + 1);
1.248 - return (data && element && strncmp ((char *) data, element, elen) == 0);
1.249 - }
1.250 -
1.251 - return FALSE;
1.252 -}
1.253 -
1.254 -static GstStaticCaps generic_xml_caps = GST_STATIC_CAPS ("application/xml");
1.255 -
1.256 -#define GENERIC_XML_CAPS (gst_static_caps_get(&generic_xml_caps))
1.257 -static void
1.258 -xml_type_find (GstTypeFind * tf, gpointer unused)
1.259 -{
1.260 - if (xml_check_first_element (tf, "", 0, TRUE)) {
1.261 - gst_type_find_suggest (tf, GST_TYPE_FIND_MINIMUM, GENERIC_XML_CAPS);
1.262 - }
1.263 -}
1.264 -
1.265 -/*** application/smil *********************************************************/
1.266 -
1.267 -static GstStaticCaps smil_caps = GST_STATIC_CAPS ("application/smil");
1.268 -
1.269 -#define SMIL_CAPS (gst_static_caps_get(&smil_caps))
1.270 -static void
1.271 -smil_type_find (GstTypeFind * tf, gpointer unused)
1.272 -{
1.273 - if (xml_check_first_element (tf, "smil", 4, FALSE)) {
1.274 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SMIL_CAPS);
1.275 - }
1.276 -}
1.277 -
1.278 -/*** text/html ***/
1.279 -
1.280 -static GstStaticCaps html_caps = GST_STATIC_CAPS ("text/html");
1.281 -
1.282 -#define HTML_CAPS gst_static_caps_get (&html_caps)
1.283 -
1.284 -static void
1.285 -html_type_find (GstTypeFind * tf, gpointer unused)
1.286 -{
1.287 - gchar *d, *data;
1.288 -
1.289 - data = (gchar *) gst_type_find_peek (tf, 0, 16);
1.290 - if (!data)
1.291 - return;
1.292 -
1.293 - if (!g_ascii_strncasecmp (data, "<!DOCTYPE HTML", 14)) {
1.294 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HTML_CAPS);
1.295 - } else if (xml_check_first_element (tf, "html", 4, FALSE)) {
1.296 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HTML_CAPS);
1.297 - } else if ((d = memchr (data, '<', 16))) {
1.298 - data = (gchar *) gst_type_find_peek (tf, d - data, 6);
1.299 - if (data && g_ascii_strncasecmp (data, "<html>", 6) == 0) {
1.300 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HTML_CAPS);
1.301 - }
1.302 - }
1.303 -}
1.304 -
1.305 -/*** video/x-fli ***/
1.306 -
1.307 -static GstStaticCaps flx_caps = GST_STATIC_CAPS ("video/x-fli");
1.308 -
1.309 -#define FLX_CAPS gst_static_caps_get(&flx_caps)
1.310 -static void
1.311 -flx_type_find (GstTypeFind * tf, gpointer unused)
1.312 -{
1.313 - guint8 *data = gst_type_find_peek (tf, 0, 134);
1.314 -
1.315 - if (data) {
1.316 - /* check magic and the frame type of the first frame */
1.317 - if ((data[4] == 0x11 || data[4] == 0x12 ||
1.318 - data[4] == 0x30 || data[4] == 0x44) &&
1.319 - data[5] == 0xaf &&
1.320 - ((data[132] == 0x00 || data[132] == 0xfa) && data[133] == 0xf1)) {
1.321 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, FLX_CAPS);
1.322 - }
1.323 - return;
1.324 - }
1.325 - data = gst_type_find_peek (tf, 0, 6);
1.326 - if (data) {
1.327 - /* check magic only */
1.328 - if ((data[4] == 0x11 || data[4] == 0x12 ||
1.329 - data[4] == 0x30 || data[4] == 0x44) && data[5] == 0xaf) {
1.330 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, FLX_CAPS);
1.331 - }
1.332 - return;
1.333 - }
1.334 -}
1.335 -
1.336 -/*** application/x-id3 ***/
1.337 -
1.338 -static GstStaticCaps id3_caps = GST_STATIC_CAPS ("application/x-id3");
1.339 -
1.340 -#define ID3_CAPS gst_static_caps_get(&id3_caps)
1.341 -static void
1.342 -id3v2_type_find (GstTypeFind * tf, gpointer unused)
1.343 -{
1.344 - guint8 *data = gst_type_find_peek (tf, 0, 10);
1.345 -
1.346 - if (data && memcmp (data, "ID3", 3) == 0 &&
1.347 - data[3] != 0xFF && data[4] != 0xFF &&
1.348 - (data[6] & 0x80) == 0 && (data[7] & 0x80) == 0 &&
1.349 - (data[8] & 0x80) == 0 && (data[9] & 0x80) == 0) {
1.350 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, ID3_CAPS);
1.351 - }
1.352 -}
1.353 -
1.354 -static void
1.355 -id3v1_type_find (GstTypeFind * tf, gpointer unused)
1.356 -{
1.357 - guint8 *data = gst_type_find_peek (tf, -128, 3);
1.358 -
1.359 - if (data && memcmp (data, "TAG", 3) == 0) {
1.360 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, ID3_CAPS);
1.361 - }
1.362 -}
1.363 -
1.364 -/*** application/x-ape ***/
1.365 -
1.366 -static GstStaticCaps apetag_caps = GST_STATIC_CAPS ("application/x-apetag");
1.367 -
1.368 -#define APETAG_CAPS gst_static_caps_get(&apetag_caps)
1.369 -static void
1.370 -apetag_type_find (GstTypeFind * tf, gpointer unused)
1.371 -{
1.372 - guint8 *data;
1.373 -
1.374 - /* APEv1/2 at start of file */
1.375 - data = gst_type_find_peek (tf, 0, 8);
1.376 - if (data && !memcmp (data, "APETAGEX", 8)) {
1.377 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, APETAG_CAPS);
1.378 - return;
1.379 - }
1.380 -
1.381 - /* APEv1/2 at end of file */
1.382 - data = gst_type_find_peek (tf, -32, 8);
1.383 - if (data && !memcmp (data, "APETAGEX", 8)) {
1.384 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, APETAG_CAPS);
1.385 - return;
1.386 - }
1.387 -}
1.388 -
1.389 -/*** audio/x-ttafile ***/
1.390 -
1.391 -static GstStaticCaps tta_caps = GST_STATIC_CAPS ("audio/x-ttafile");
1.392 -
1.393 -#define TTA_CAPS gst_static_caps_get(&tta_caps)
1.394 -static void
1.395 -tta_type_find (GstTypeFind * tf, gpointer unused)
1.396 -{
1.397 - guint8 *data = gst_type_find_peek (tf, 0, 3);
1.398 -
1.399 - if (data) {
1.400 - if (memcmp (data, "TTA", 3) == 0) {
1.401 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, TTA_CAPS);
1.402 - return;
1.403 - }
1.404 - }
1.405 -}
1.406 -
1.407 -/*** audio/mpeg version 2, 4 ***/
1.408 -
1.409 -static GstStaticCaps aac_caps = GST_STATIC_CAPS ("audio/mpeg, "
1.410 - "mpegversion = (int) { 2, 4 }, framed = (bool) false");
1.411 -#define AAC_CAPS (gst_static_caps_get(&aac_caps))
1.412 -#define AAC_AMOUNT (4096)
1.413 -static void
1.414 -aac_type_find (GstTypeFind * tf, gpointer unused)
1.415 -{
1.416 - guint8 *data = gst_type_find_peek (tf, 0, AAC_AMOUNT);
1.417 - gint snc;
1.418 -
1.419 - /* detect adts header or adif header.
1.420 - * The ADIF header is 4 bytes, that should be OK. The ADTS header, on
1.421 - * the other hand, is 14 bits only, so we require one valid frame with
1.422 - * again a valid syncpoint on the next one (28 bits) for certainty. We
1.423 - * require 4 kB, which is quite a lot, since frames are generally 200-400
1.424 - * bytes.
1.425 - */
1.426 - if (data) {
1.427 - gint n;
1.428 -
1.429 - for (n = 0; n < AAC_AMOUNT - 3; n++) {
1.430 - snc = GST_READ_UINT16_BE (&data[n]);
1.431 - if ((snc & 0xfff6) == 0xfff0) {
1.432 - /* ADTS header - find frame length */
1.433 - gint len;
1.434 -
1.435 - GST_DEBUG ("Found one ADTS syncpoint at offset 0x%x, tracing next...",
1.436 - n);
1.437 - if (AAC_AMOUNT - n < 5) {
1.438 - GST_DEBUG ("Not enough data to parse ADTS header");
1.439 - break;
1.440 - }
1.441 - len = ((data[n + 3] & 0x03) << 11) |
1.442 - (data[n + 4] << 3) | ((data[n + 5] & 0xe0) >> 5);
1.443 - if (n + len + 2 >= AAC_AMOUNT) {
1.444 - GST_DEBUG ("Next frame is not within reach");
1.445 - break;
1.446 - } else if (len == 0) {
1.447 - continue;
1.448 - }
1.449 -
1.450 - snc = GST_READ_UINT16_BE (&data[n + len]);
1.451 - if ((snc & 0xfff6) == 0xfff0) {
1.452 - gint mpegversion = (data[n + 1] & 0x08) ? 2 : 4;
1.453 - GstCaps *caps = gst_caps_new_simple ("audio/mpeg",
1.454 - "framed", G_TYPE_BOOLEAN, FALSE,
1.455 - "mpegversion", G_TYPE_INT, mpegversion,
1.456 - NULL);
1.457 -
1.458 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, caps);
1.459 - gst_caps_unref (caps);
1.460 -
1.461 - GST_DEBUG ("Found ADTS-%d syncpoint at offset 0x%x (framelen %u)",
1.462 - mpegversion, n, len);
1.463 - break;
1.464 - }
1.465 -
1.466 - GST_DEBUG ("No next frame found... (should be at 0x%x)", n + len);
1.467 - } else if (!memcmp (&data[n], "ADIF", 4)) {
1.468 - /* ADIF header */
1.469 - GstCaps *caps = gst_caps_new_simple ("audio/mpeg",
1.470 - "framed", G_TYPE_BOOLEAN, FALSE,
1.471 - "mpegversion", G_TYPE_INT, 4,
1.472 - NULL);
1.473 -
1.474 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, caps);
1.475 - gst_caps_unref (caps);
1.476 - }
1.477 - }
1.478 - }
1.479 -}
1.480 -
1.481 -/*** audio/mpeg version 1 ***/
1.482 -
1.483 -/*
1.484 - * The chance that random data is identified as a valid mp3 header is 63 / 2^18
1.485 - * (0.024%) per try. This makes the function for calculating false positives
1.486 - * 1 - (1 - ((63 / 2 ^18) ^ GST_MP3_TYPEFIND_MIN_HEADERS)) ^ buffersize)
1.487 - * This has the following probabilities of false positives:
1.488 - * datasize MIN_HEADERS
1.489 - * (bytes) 1 2 3 4
1.490 - * 4096 62.6% 0.02% 0% 0%
1.491 - * 16384 98% 0.09% 0% 0%
1.492 - * 1 MiB 100% 5.88% 0% 0%
1.493 - * 1 GiB 100% 100% 1.44% 0%
1.494 - * 1 TiB 100% 100% 100% 0.35%
1.495 - * This means that the current choice (3 headers by most of the time 4096 byte
1.496 - * buffers is pretty safe for now.
1.497 - *
1.498 - * The max. size of each frame is 1440 bytes, which means that for N frames to
1.499 - * be detected, we need 1440 * GST_MP3_TYPEFIND_MIN_HEADERS + 3 bytes of data.
1.500 - * Assuming we step into the stream right after the frame header, this
1.501 - * means we need 1440 * (GST_MP3_TYPEFIND_MIN_HEADERS + 1) - 1 + 3 bytes
1.502 - * of data (5762) to always detect any mp3.
1.503 - */
1.504 -
1.505 -static const guint mp3types_bitrates[2][3][16] =
1.506 - { {{0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448,},
1.507 - {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384,},
1.508 - {0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320,}},
1.509 -{{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256,},
1.510 - {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,},
1.511 - {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,}},
1.512 -};
1.513 -
1.514 -static const guint mp3types_freqs[3][3] = { {11025, 12000, 8000},
1.515 -{22050, 24000, 16000},
1.516 -{44100, 48000, 32000}
1.517 -};
1.518 -
1.519 -static inline guint
1.520 -mp3_type_frame_length_from_header (guint32 header, guint * put_layer,
1.521 - guint * put_channels, guint * put_bitrate, guint * put_samplerate,
1.522 - gboolean * may_be_free_format, gint possible_free_framelen)
1.523 -{
1.524 - guint bitrate, layer, length, mode, samplerate, version, channels;
1.525 -
1.526 - if ((header & 0xffe00000) != 0xffe00000)
1.527 - return 0;
1.528 -
1.529 - /* we don't need extension, copyright, original or
1.530 - * emphasis for the frame length */
1.531 - header >>= 6;
1.532 -
1.533 - /* mode */
1.534 - mode = header & 0x3;
1.535 - header >>= 3;
1.536 -
1.537 - /* padding */
1.538 - length = header & 0x1;
1.539 - header >>= 1;
1.540 -
1.541 - /* sampling frequency */
1.542 - samplerate = header & 0x3;
1.543 - if (samplerate == 3)
1.544 - return 0;
1.545 - header >>= 2;
1.546 -
1.547 - /* bitrate index */
1.548 - bitrate = header & 0xF;
1.549 - if (bitrate == 0 && possible_free_framelen == -1) {
1.550 - GST_LOG ("Possibly a free format mp3 - signalling");
1.551 - *may_be_free_format = TRUE;
1.552 - }
1.553 - if (bitrate == 15 || (bitrate == 0 && possible_free_framelen == -1))
1.554 - return 0;
1.555 -
1.556 - /* ignore error correction, too */
1.557 - header >>= 5;
1.558 -
1.559 - /* layer */
1.560 - layer = 4 - (header & 0x3);
1.561 - if (layer == 4)
1.562 - return 0;
1.563 - header >>= 2;
1.564 -
1.565 - /* version 0=MPEG2.5; 2=MPEG2; 3=MPEG1 */
1.566 - version = header & 0x3;
1.567 - if (version == 1)
1.568 - return 0;
1.569 -
1.570 - /* lookup */
1.571 - channels = (mode == 3) ? 1 : 2;
1.572 - samplerate = mp3types_freqs[version > 0 ? version - 1 : 0][samplerate];
1.573 - if (bitrate == 0) {
1.574 - if (layer == 1) {
1.575 - length *= 4;
1.576 - length += possible_free_framelen;
1.577 - bitrate = length * samplerate / 48000;
1.578 - } else {
1.579 - length += possible_free_framelen;
1.580 - bitrate = length * samplerate /
1.581 - ((layer == 3 && version != 3) ? 72000 : 144000);
1.582 - }
1.583 - } else {
1.584 - /* calculating */
1.585 - bitrate = mp3types_bitrates[version == 3 ? 0 : 1][layer - 1][bitrate];
1.586 - if (layer == 1) {
1.587 - length = ((12000 * bitrate / samplerate) + length) * 4;
1.588 - } else {
1.589 - length += ((layer == 3
1.590 - && version != 3) ? 72000 : 144000) * bitrate / samplerate;
1.591 - }
1.592 - }
1.593 -
1.594 - GST_LOG ("mp3typefind: calculated mp3 frame length of %u bytes", length);
1.595 - GST_LOG
1.596 - ("mp3typefind: samplerate = %u - bitrate = %u - layer = %u - version = %u"
1.597 - " - channels = %u", samplerate, bitrate, layer, version, channels);
1.598 -
1.599 - if (put_layer)
1.600 - *put_layer = layer;
1.601 - if (put_channels)
1.602 - *put_channels = channels;
1.603 - if (put_bitrate)
1.604 - *put_bitrate = bitrate;
1.605 - if (put_samplerate)
1.606 - *put_samplerate = samplerate;
1.607 -
1.608 - return length;
1.609 -}
1.610 -
1.611 -
1.612 -static GstStaticCaps mp3_caps = GST_STATIC_CAPS ("audio/mpeg, "
1.613 - "mpegversion = (int) 1, layer = (int) [ 1, 3 ]");
1.614 -#define MP3_CAPS (gst_static_caps_get(&mp3_caps))
1.615 -/*
1.616 - * random values for typefinding
1.617 - * if no more data is available, we will return a probability of
1.618 - * (found_headers/TRY_HEADERS) * (MAXIMUM * (TRY_SYNC - bytes_skipped)
1.619 - * / TRY_SYNC)
1.620 - * if found_headers >= MIN_HEADERS
1.621 - */
1.622 -#define GST_MP3_TYPEFIND_MIN_HEADERS (2)
1.623 -#define GST_MP3_TYPEFIND_TRY_HEADERS (5)
1.624 -#define GST_MP3_TYPEFIND_TRY_SYNC (GST_TYPE_FIND_MAXIMUM * 100) /* 10kB */
1.625 -#define GST_MP3_TYPEFIND_SYNC_SIZE (2048)
1.626 -#define GST_MP3_WRONG_HEADER (10)
1.627 -
1.628 -static void
1.629 -mp3_type_find_at_offset (GstTypeFind * tf, guint64 start_off,
1.630 - guint * found_layer, GstTypeFindProbability * found_prob)
1.631 -{
1.632 - guint8 *data = NULL;
1.633 - guint8 *data_end = NULL;
1.634 - guint size;
1.635 - guint64 skipped;
1.636 - gint last_free_offset = -1;
1.637 - gint last_free_framelen = -1;
1.638 - gboolean headerstart = TRUE;
1.639 -
1.640 - *found_layer = 0;
1.641 - *found_prob = 0;
1.642 -
1.643 - size = 0;
1.644 - skipped = 0;
1.645 - while (skipped < GST_MP3_TYPEFIND_TRY_SYNC) {
1.646 - if (size <= 0) {
1.647 - size = GST_MP3_TYPEFIND_SYNC_SIZE * 2;
1.648 - do {
1.649 - size /= 2;
1.650 - data = gst_type_find_peek (tf, skipped + start_off, size);
1.651 - } while (size > 10 && !data);
1.652 - if (!data)
1.653 - break;
1.654 - data_end = data + size;
1.655 - }
1.656 - if (*data == 0xFF) {
1.657 - guint8 *head_data = NULL;
1.658 - guint layer = 0, bitrate, samplerate, channels;
1.659 - guint found = 0; /* number of valid headers found */
1.660 - guint64 offset = skipped;
1.661 -
1.662 - while (found < GST_MP3_TYPEFIND_TRY_HEADERS) {
1.663 - guint32 head;
1.664 - guint length;
1.665 - guint prev_layer = 0, prev_bitrate = 0;
1.666 - guint prev_channels = 0, prev_samplerate = 0;
1.667 - gboolean free = FALSE;
1.668 -
1.669 - if ((gint64) (offset - skipped + 4) >= 0 &&
1.670 - data + offset - skipped + 4 < data_end) {
1.671 - head_data = data + offset - skipped;
1.672 - } else {
1.673 - head_data = gst_type_find_peek (tf, offset + start_off, 4);
1.674 - }
1.675 - if (!head_data)
1.676 - break;
1.677 - head = GST_READ_UINT32_BE (head_data);
1.678 - if (!(length = mp3_type_frame_length_from_header (head, &layer,
1.679 - &channels, &bitrate, &samplerate, &free,
1.680 - last_free_framelen))) {
1.681 - if (free) {
1.682 - if (last_free_offset == -1)
1.683 - last_free_offset = offset;
1.684 - else {
1.685 - last_free_framelen = offset - last_free_offset;
1.686 - offset = last_free_offset;
1.687 - continue;
1.688 - }
1.689 - } else {
1.690 - last_free_framelen = -1;
1.691 - }
1.692 -
1.693 - /* Mark the fact that we didn't find a valid header at the beginning */
1.694 - if (found == 0)
1.695 - headerstart = FALSE;
1.696 -
1.697 - GST_LOG ("%d. header at offset %" G_GUINT64_FORMAT
1.698 - " (0x%" G_GINT64_MODIFIER "x) was not an mp3 header "
1.699 - "(possibly-free: %s)", found + 1, start_off + offset,
1.700 - start_off + offset, free ? "yes" : "no");
1.701 - break;
1.702 - }
1.703 - if ((prev_layer && prev_layer != layer) ||
1.704 - /* (prev_bitrate && prev_bitrate != bitrate) || <-- VBR */
1.705 - (prev_samplerate && prev_samplerate != samplerate) ||
1.706 - (prev_channels && prev_channels != channels)) {
1.707 - /* this means an invalid property, or a change, which might mean
1.708 - * that this is not a mp3 but just a random bytestream. It could
1.709 - * be a freaking funky encoded mp3 though. We'll just not count
1.710 - * this header*/
1.711 - prev_layer = layer;
1.712 - prev_bitrate = bitrate;
1.713 - prev_channels = channels;
1.714 - prev_samplerate = samplerate;
1.715 - } else {
1.716 - found++;
1.717 - GST_LOG ("found %d. header at offset %" G_GUINT64_FORMAT " (0x%"
1.718 - G_GINT64_MODIFIER "X)", found, start_off + offset,
1.719 - start_off + offset);
1.720 - }
1.721 - offset += length;
1.722 - }
1.723 - g_assert (found <= GST_MP3_TYPEFIND_TRY_HEADERS);
1.724 - if (found == GST_MP3_TYPEFIND_TRY_HEADERS ||
1.725 - (found >= GST_MP3_TYPEFIND_MIN_HEADERS && head_data == NULL)) {
1.726 - /* we can make a valid guess */
1.727 - guint probability = found * GST_TYPE_FIND_MAXIMUM *
1.728 - (GST_MP3_TYPEFIND_TRY_SYNC - skipped) /
1.729 - GST_MP3_TYPEFIND_TRY_HEADERS / GST_MP3_TYPEFIND_TRY_SYNC;
1.730 -
1.731 - if (!headerstart
1.732 - && ((probability - GST_MP3_WRONG_HEADER) > GST_TYPE_FIND_MINIMUM))
1.733 - probability -= GST_MP3_WRONG_HEADER;
1.734 - if (probability < GST_TYPE_FIND_MINIMUM)
1.735 - probability = GST_TYPE_FIND_MINIMUM;
1.736 - if (start_off > 0)
1.737 - probability /= 2;
1.738 -
1.739 - GST_INFO
1.740 - ("audio/mpeg calculated %u = %u * %u / %u * (%u - %"
1.741 - G_GUINT64_FORMAT ") / %u", probability, GST_TYPE_FIND_MAXIMUM,
1.742 - found, GST_MP3_TYPEFIND_TRY_HEADERS, GST_MP3_TYPEFIND_TRY_SYNC,
1.743 - (guint64) skipped, GST_MP3_TYPEFIND_TRY_SYNC);
1.744 - /* make sure we're not id3 tagged */
1.745 - head_data = gst_type_find_peek (tf, -128, 3);
1.746 - if (head_data && (memcmp (head_data, "TAG", 3) == 0)) {
1.747 - probability = 0;
1.748 - }
1.749 - g_assert (probability <= GST_TYPE_FIND_MAXIMUM);
1.750 -
1.751 - *found_prob = probability;
1.752 - if (probability > 0)
1.753 - *found_layer = layer;
1.754 - return;
1.755 - }
1.756 - }
1.757 - data++;
1.758 - skipped++;
1.759 - size--;
1.760 - }
1.761 -}
1.762 -
1.763 -static void
1.764 -mp3_type_find (GstTypeFind * tf, gpointer unused)
1.765 -{
1.766 - GstTypeFindProbability prob, mid_prob;
1.767 - guint8 *data;
1.768 - guint layer, mid_layer;
1.769 - guint64 length;
1.770 -
1.771 - mp3_type_find_at_offset (tf, 0, &layer, &prob);
1.772 - length = gst_type_find_get_length (tf);
1.773 -
1.774 - if (length == 0 || length == (guint64) - 1) {
1.775 - if (prob != 0)
1.776 - goto suggest;
1.777 - return;
1.778 - }
1.779 -
1.780 - /* if we're pretty certain already, skip the additional check */
1.781 - if (prob >= GST_TYPE_FIND_LIKELY)
1.782 - goto suggest;
1.783 -
1.784 - mp3_type_find_at_offset (tf, length / 2, &mid_layer, &mid_prob);
1.785 -
1.786 - if (mid_prob > 0) {
1.787 - if (prob == 0) {
1.788 - GST_LOG ("detected audio/mpeg only in the middle (p=%u)", mid_prob);
1.789 - layer = mid_layer;
1.790 - prob = mid_prob;
1.791 - goto suggest;
1.792 - }
1.793 -
1.794 - if (layer != mid_layer) {
1.795 - GST_WARNING ("audio/mpeg layer discrepancy: %u vs. %u", layer, mid_layer);
1.796 - return; /* FIXME: or should we just go with the one in the middle? */
1.797 - }
1.798 -
1.799 - /* detected mpeg audio both in middle of the file and at the start */
1.800 - prob = (prob + mid_prob) / 2;
1.801 - goto suggest;
1.802 - }
1.803 -
1.804 - /* let's see if there's a valid header right at the start */
1.805 - data = gst_type_find_peek (tf, 0, 4); /* use min. frame size? */
1.806 - if (data && mp3_type_frame_length_from_header (GST_READ_UINT32_BE (data),
1.807 - &layer, NULL, NULL, NULL, NULL, 0) != 0) {
1.808 - if (prob == 0)
1.809 - prob = GST_TYPE_FIND_POSSIBLE - 10;
1.810 - else
1.811 - prob = MAX (GST_TYPE_FIND_POSSIBLE - 10, prob + 10);
1.812 - }
1.813 -
1.814 - if (prob > 0)
1.815 - goto suggest;
1.816 -
1.817 - return;
1.818 -
1.819 -suggest:
1.820 - {
1.821 - GstCaps *caps;
1.822 -
1.823 - g_assert (layer > 0);
1.824 -
1.825 - caps = gst_caps_make_writable (MP3_CAPS);
1.826 - gst_structure_set (gst_caps_get_structure (caps, 0), "layer",
1.827 - G_TYPE_INT, layer, NULL);
1.828 - gst_type_find_suggest (tf, prob, caps);
1.829 - gst_caps_unref (caps);
1.830 - return;
1.831 - }
1.832 -}
1.833 -
1.834 -/*** audio/x-musepack ***/
1.835 -
1.836 -static GstStaticCaps musepack_caps = GST_STATIC_CAPS ("audio/x-musepack");
1.837 -
1.838 -#define MUSEPACK_CAPS (gst_static_caps_get(&musepack_caps))
1.839 -static void
1.840 -musepack_type_find (GstTypeFind * tf, gpointer unused)
1.841 -{
1.842 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.843 -
1.844 - if (data && memcmp (data, "MP+", 3) == 0) {
1.845 - if ((data[3] & 0x7f) == 7) {
1.846 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MUSEPACK_CAPS);
1.847 - } else {
1.848 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY + 10, MUSEPACK_CAPS);
1.849 - }
1.850 - }
1.851 -}
1.852 -
1.853 -/*** audio/x-ac3 ***/
1.854 -static GstStaticCaps ac3_caps = GST_STATIC_CAPS ("audio/x-ac3");
1.855 -
1.856 -#define AC3_CAPS (gst_static_caps_get(&ac3_caps))
1.857 -
1.858 -static void
1.859 -ac3_type_find (GstTypeFind * tf, gpointer unused)
1.860 -{
1.861 - guint8 *data = gst_type_find_peek (tf, 0, 2);
1.862 -
1.863 - if (data) {
1.864 - /* pretty lame method... */
1.865 - if (data[0] == 0x0b && data[1] == 0x77) {
1.866 - gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, AC3_CAPS);
1.867 - return;
1.868 - }
1.869 - }
1.870 -}
1.871 -
1.872 -/*** wavpack ***/
1.873 -
1.874 -static GstStaticCaps wavpack_caps =
1.875 -GST_STATIC_CAPS ("audio/x-wavpack, framed = (boolean) false");
1.876 -
1.877 -#define WAVPACK_CAPS (gst_static_caps_get(&wavpack_caps))
1.878 -
1.879 -static GstStaticCaps wavpack_correction_caps =
1.880 -GST_STATIC_CAPS ("audio/x-wavpack-correction, framed = (boolean) false");
1.881 -
1.882 -#define WAVPACK_CORRECTION_CAPS (gst_static_caps_get(&wavpack_correction_caps))
1.883 -
1.884 -static void
1.885 -wavpack_type_find (GstTypeFind * tf, gpointer unused)
1.886 -{
1.887 - guint64 offset;
1.888 - guint32 blocksize;
1.889 - guint8 *data;
1.890 -
1.891 - data = gst_type_find_peek (tf, 0, 32);
1.892 - if (!data)
1.893 - return;
1.894 -
1.895 - if (data[0] != 'w' || data[1] != 'v' || data[2] != 'p' || data[3] != 'k')
1.896 - return;
1.897 -
1.898 - /* Note: wavpack blocks can be fairly large (easily 60-110k), possibly
1.899 - * larger than the max. limits imposed by certain typefinding elements
1.900 - * like id3demux or apedemux, so typefinding is most likely only going to
1.901 - * work in pull-mode */
1.902 - blocksize = GST_READ_UINT32_LE (data + 4);
1.903 - GST_LOG ("wavpack header, blocksize=0x%04x", blocksize);
1.904 - offset = 32;
1.905 - while (offset < 32 + blocksize) {
1.906 - guint32 sublen;
1.907 -
1.908 - /* get chunk header */
1.909 - GST_LOG ("peeking at chunk at offset 0x%04x", (guint) offset);
1.910 - data = gst_type_find_peek (tf, offset, 4);
1.911 - if (data == NULL)
1.912 - break;
1.913 - sublen = ((guint32) data[1]) << 1;
1.914 - if (data[0] & 0x80) {
1.915 - sublen |= (((guint32) data[2]) << 9) | (((guint32) data[3]) << 17);
1.916 - sublen += 1 + 3; /* id + length */
1.917 - } else {
1.918 - sublen += 1 + 1; /* id + length */
1.919 - }
1.920 - if (sublen > blocksize - offset + 32) {
1.921 - GST_LOG ("chunk length too big (%u > %" G_GUINT64_FORMAT ")", sublen,
1.922 - blocksize - offset);
1.923 - break;
1.924 - }
1.925 - if ((data[0] & 0x20) == 0) {
1.926 - switch (data[0] & 0x0f) {
1.927 - case 0xa: /* ID_WV_BITSTREAM */
1.928 - case 0xc: /* ID_WVX_BITSTREAM */
1.929 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, WAVPACK_CAPS);
1.930 - return;
1.931 - case 0xb: /* ID_WVC_BITSTREAM */
1.932 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY,
1.933 - WAVPACK_CORRECTION_CAPS);
1.934 - return;
1.935 - default:
1.936 - break;
1.937 - }
1.938 - }
1.939 - offset += sublen;
1.940 - }
1.941 -}
1.942 -
1.943 -/*** multipart/x-mixed-replace mimestream ***/
1.944 -
1.945 -static GstStaticCaps multipart_caps =
1.946 -GST_STATIC_CAPS ("multipart/x-mixed-replace");
1.947 -#define MULTIPART_CAPS gst_static_caps_get(&multipart_caps)
1.948 -
1.949 -/* multipart/x-mixed replace is:
1.950 - * <maybe some whitespace>--<some ascii chars>[\r]\n
1.951 - * <more ascii chars>[\r]\nContent-type:<more ascii>[\r]\n */
1.952 -static void
1.953 -multipart_type_find (GstTypeFind * tf, gpointer unused)
1.954 -{
1.955 - guint8 *data;
1.956 - guint8 *x;
1.957 -
1.958 -#define MULTIPART_MAX_BOUNDARY_OFFSET 16
1.959 - data = gst_type_find_peek (tf, 0, MULTIPART_MAX_BOUNDARY_OFFSET);
1.960 - if (!data)
1.961 - return;
1.962 -
1.963 - for (x = data;
1.964 - x - data < MULTIPART_MAX_BOUNDARY_OFFSET - 2 && g_ascii_isspace (*x);
1.965 - x++);
1.966 - if (x[0] != '-' || x[1] != '-')
1.967 - return;
1.968 -
1.969 - /* Could be okay, peek what should be enough for a complete header */
1.970 -#define MULTIPART_MAX_HEADER_SIZE 256
1.971 - data = gst_type_find_peek (tf, 0, MULTIPART_MAX_HEADER_SIZE);
1.972 - if (!data)
1.973 - return;
1.974 -
1.975 - for (x = data; x - data < MULTIPART_MAX_HEADER_SIZE - 14; x++) {
1.976 - if (!isascii (*x)) {
1.977 - return;
1.978 - }
1.979 - if (*x == '\n' &&
1.980 - !g_ascii_strncasecmp ("content-type:", (gchar *) x + 1, 13)) {
1.981 - GstCaps *caps = gst_caps_copy (MULTIPART_CAPS);
1.982 -
1.983 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, caps);
1.984 - gst_caps_unref (caps);
1.985 - return;
1.986 - }
1.987 - }
1.988 -}
1.989 -
1.990 -/*** video/mpeg systemstream ***/
1.991 -static GstStaticCaps mpeg_sys_caps = GST_STATIC_CAPS ("video/mpeg, "
1.992 - "systemstream = (boolean) true, mpegversion = (int) [ 1, 2 ]");
1.993 -
1.994 -#define MPEG_SYS_CAPS gst_static_caps_get(&mpeg_sys_caps)
1.995 -#define IS_MPEG_HEADER(data) ((((guint8 *)(data))[0] == 0x00) && \
1.996 - (((guint8 *)(data))[1] == 0x00) && \
1.997 - (((guint8 *)(data))[2] == 0x01))
1.998 -
1.999 -#define IS_MPEG_PACK_HEADER(data) (IS_MPEG_HEADER (data) && \
1.1000 - (((guint8 *)(data))[3] == 0xBA))
1.1001 -
1.1002 -#define IS_MPEG_SYSTEM_HEADER(data) (IS_MPEG_HEADER (data) && \
1.1003 - (((guint8 *)(data))[3] == 0xBB))
1.1004 -#define IS_MPEG_PACKET_HEADER(data) (IS_MPEG_HEADER (data) && \
1.1005 - ((((guint8 *)(data))[3] & 0x80) == 0x80))
1.1006 -
1.1007 -#define IS_MPEG_PES_HEADER(data) (IS_MPEG_HEADER (data) && \
1.1008 - ((((guint8 *)(data))[3] == 0xE0) || \
1.1009 - (((guint8 *)(data))[3] == 0xC0) || \
1.1010 - (((guint8 *)(data))[3] == 0xBD)))
1.1011 -
1.1012 -static void
1.1013 -mpeg2_sys_type_find (GstTypeFind * tf, gpointer unused)
1.1014 -{
1.1015 - guint8 *data = gst_type_find_peek (tf, 0, 5);
1.1016 - gint mpegversion;
1.1017 -
1.1018 - if (data && IS_MPEG_PACK_HEADER (data)) {
1.1019 - if ((data[4] & 0xC0) == 0x40) {
1.1020 - /* type 2 */
1.1021 - mpegversion = 2;
1.1022 - goto suggest;
1.1023 - } else if ((data[4] & 0xF0) == 0x20) {
1.1024 - mpegversion = 1;
1.1025 - goto suggest;
1.1026 - }
1.1027 - } else if (data && IS_MPEG_PES_HEADER (data)) {
1.1028 - /* PES stream */
1.1029 - mpegversion = 2;
1.1030 - goto suggest;
1.1031 - }
1.1032 -
1.1033 - return;
1.1034 -suggest:
1.1035 - {
1.1036 - GstCaps *caps = gst_caps_copy (MPEG_SYS_CAPS);
1.1037 -
1.1038 - gst_structure_set (gst_caps_get_structure (caps, 0), "mpegversion",
1.1039 - G_TYPE_INT, mpegversion, NULL);
1.1040 - gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, caps);
1.1041 - gst_caps_unref (caps);
1.1042 - }
1.1043 -};
1.1044 -
1.1045 -/* ATTENTION: ugly return value:
1.1046 - * 0 - invalid data
1.1047 - * 1 - not enough data
1.1048 - * anything else - size until next package
1.1049 - */
1.1050 -static guint
1.1051 -mpeg1_parse_header (GstTypeFind * tf, guint64 offset)
1.1052 -{
1.1053 - guint8 *data = gst_type_find_peek (tf, offset, 4);
1.1054 - guint size;
1.1055 -
1.1056 - if (!data) {
1.1057 - GST_LOG ("couldn't get MPEG header bytes");
1.1058 - return 1;
1.1059 - }
1.1060 -
1.1061 - if (data[0] != 0 || data[1] != 0 || data[2] != 1) {
1.1062 - GST_LOG ("no sync");
1.1063 - return 0;
1.1064 - }
1.1065 - offset += 4;
1.1066 -
1.1067 - GST_LOG ("sync %02x", data[3]);
1.1068 -
1.1069 - switch (data[3]) {
1.1070 - case 0xBA: /* pack header */
1.1071 - data = gst_type_find_peek (tf, offset, 8);
1.1072 - if (!data) {
1.1073 - GST_LOG ("couldn't get MPEG pack header bytes");
1.1074 - return 1;
1.1075 - }
1.1076 - size = 12;
1.1077 - /* check marker bits */
1.1078 - if ((data[0] & 0xF1) != 0x21 ||
1.1079 - (data[2] & 0x01) != 0x01 ||
1.1080 - (data[4] & 0x01) != 0x01 ||
1.1081 - (data[5] & 0x80) != 0x80 || (data[7] & 0x01) != 0x01) {
1.1082 - GST_LOG ("wrong marker bits");
1.1083 - return 0;
1.1084 - }
1.1085 - break;
1.1086 -
1.1087 - case 0xB9: /* ISO end code */
1.1088 - size = 4;
1.1089 - break;
1.1090 -
1.1091 - case 0xBB: /* system header */
1.1092 - data = gst_type_find_peek (tf, offset, 2);
1.1093 - if (!data) {
1.1094 - GST_LOG ("couldn't get MPEG pack header bytes");
1.1095 - return 1;
1.1096 - }
1.1097 - size = GST_READ_UINT16_BE (data) + 6;
1.1098 - offset += 2;
1.1099 - data = gst_type_find_peek (tf, offset, size - 6);
1.1100 - if (!data) {
1.1101 - GST_LOG ("couldn't get MPEG pack header bytes");
1.1102 - return 1;
1.1103 - }
1.1104 - /* check marker bits */
1.1105 - if ((data[0] & 0x80) != 0x80 ||
1.1106 - (data[2] & 0x01) != 0x01 || (data[4] & 0x20) != 0x20) {
1.1107 - GST_LOG ("wrong marker bits");
1.1108 - return 0;
1.1109 - }
1.1110 - /* check stream marker bits */
1.1111 - for (offset = 6; offset < (size - 6); offset += 3) {
1.1112 - if (data[offset] <= 0xBB || (data[offset + 1] & 0xC0) != 0xC0) {
1.1113 - GST_LOG ("wrong marker bits");
1.1114 - return 0;
1.1115 - }
1.1116 - }
1.1117 - break;
1.1118 -
1.1119 - default:
1.1120 - if (data[3] < 0xB9)
1.1121 - return 0;
1.1122 - data = gst_type_find_peek (tf, offset, 2);
1.1123 - if (!data) {
1.1124 - GST_LOG ("couldn't get MPEG pack header bytes");
1.1125 - return 1;
1.1126 - }
1.1127 - size = GST_READ_UINT16_BE (data) + 6;
1.1128 - /* FIXME: we could check PTS/DTS marker bits here... (bit overkill) */
1.1129 - break;
1.1130 - }
1.1131 -
1.1132 - return size;
1.1133 -}
1.1134 -
1.1135 -/* calculation of possibility to identify random data as mpeg systemstream:
1.1136 - * bits that must match in header detection: 32 (or more)
1.1137 - * chance that random data is identifed: 1/2^32
1.1138 - * chance that GST_MPEG_TYPEFIND_TRY_HEADERS headers are identified:
1.1139 - * 1/2^(32*GST_MPEG_TYPEFIND_TRY_HEADERS)
1.1140 - * chance that this happens in GST_MPEG_TYPEFIND_TRY_SYNC bytes:
1.1141 - * 1-(1+1/2^(32*GST_MPEG_TYPEFIND_TRY_HEADERS)^GST_MPEG_TYPEFIND_TRY_SYNC)
1.1142 - * for current values:
1.1143 - * 1-(1+1/2^(32*4)^101024)
1.1144 - * = <some_number>
1.1145 - */
1.1146 -#define GST_MPEG_TYPEFIND_TRY_HEADERS 4
1.1147 -#define GST_MPEG_TYPEFIND_TRY_SYNC (100 * 1024) /* 100kB */
1.1148 -#define GST_MPEG_TYPEFIND_SYNC_SIZE 2048
1.1149 -static void
1.1150 -mpeg1_sys_type_find (GstTypeFind * tf, gpointer unused)
1.1151 -{
1.1152 - guint8 *data = NULL;
1.1153 - guint size = 0;
1.1154 - guint64 skipped = 0;
1.1155 - GstCaps *caps;
1.1156 -
1.1157 - while (skipped < GST_MPEG_TYPEFIND_TRY_SYNC) {
1.1158 - if (size < 4) {
1.1159 - data = gst_type_find_peek (tf, skipped, GST_MPEG_TYPEFIND_SYNC_SIZE);
1.1160 - if (!data)
1.1161 - break;
1.1162 - size = GST_MPEG_TYPEFIND_SYNC_SIZE;
1.1163 - }
1.1164 - if (IS_MPEG_PACK_HEADER (data)) {
1.1165 - /* found packet start code */
1.1166 - guint found = 0;
1.1167 - guint packet_size = 0;
1.1168 - guint64 offset = skipped;
1.1169 -
1.1170 - while (found < GST_MPEG_TYPEFIND_TRY_HEADERS) {
1.1171 - packet_size = mpeg1_parse_header (tf, offset);
1.1172 - if (packet_size <= 1)
1.1173 - break;
1.1174 - offset += packet_size;
1.1175 - found++;
1.1176 - }
1.1177 - g_assert (found <= GST_MPEG_TYPEFIND_TRY_HEADERS);
1.1178 - if (found == GST_MPEG_TYPEFIND_TRY_HEADERS || packet_size == 1) {
1.1179 - GST_LOG ("suggesting mpeg1 system steeam");
1.1180 - caps = gst_caps_copy (MPEG_SYS_CAPS);
1.1181 - gst_structure_set (gst_caps_get_structure (caps, 0), "mpegversion",
1.1182 - G_TYPE_INT, 1, NULL);
1.1183 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM - 1, caps);
1.1184 - gst_caps_unref (caps);
1.1185 - return;
1.1186 - }
1.1187 - }
1.1188 - data++;
1.1189 - skipped++;
1.1190 - size--;
1.1191 - }
1.1192 -}
1.1193 -
1.1194 -/** video/mpegts Transport Stream **/
1.1195 -static GstStaticCaps mpegts_caps = GST_STATIC_CAPS ("video/mpegts, "
1.1196 - "systemstream = (boolean) true, packetsize = (int) [ 188, 208 ]");
1.1197 -#define MPEGTS_CAPS gst_static_caps_get(&mpegts_caps)
1.1198 -
1.1199 -#define GST_MPEGTS_TYPEFIND_MIN_HEADERS 4
1.1200 -#define GST_MPEGTS_TYPEFIND_MAX_HEADERS 10
1.1201 -#define GST_MPEGTS_MAX_PACKET_SIZE 204
1.1202 -#define GST_MPEGTS_TYPEFIND_SYNC_SIZE \
1.1203 - (GST_MPEGTS_TYPEFIND_MIN_HEADERS * GST_MPEGTS_MAX_PACKET_SIZE)
1.1204 -#define GST_MPEGTS_TYPEFIND_MAX_SYNC \
1.1205 - (GST_MPEGTS_TYPEFIND_MAX_HEADERS * GST_MPEGTS_MAX_PACKET_SIZE)
1.1206 -
1.1207 -#define MPEGTS_HDR_SIZE 4
1.1208 -#define IS_MPEGTS_HEADER(data) (((data)[0] == 0x47) && \
1.1209 - (((data)[1] & 0x80) == 0x00) && \
1.1210 - (((data)[3] & 0x10) == 0x10))
1.1211 -
1.1212 -/* Helper function to search ahead at intervals of packet_size for mpegts
1.1213 - * headers */
1.1214 -gint
1.1215 -mpeg_ts_probe_headers (GstTypeFind * tf, guint64 offset, gint packet_size)
1.1216 -{
1.1217 - /* We always enter this function having found at least one header already */
1.1218 - gint found = 1;
1.1219 - guint8 *data = NULL;
1.1220 -
1.1221 - while (found < GST_MPEGTS_TYPEFIND_MAX_HEADERS) {
1.1222 - offset += packet_size;
1.1223 -
1.1224 - data = gst_type_find_peek (tf, offset, MPEGTS_HDR_SIZE);
1.1225 - if (data == NULL || !IS_MPEGTS_HEADER (data))
1.1226 - return found;
1.1227 -
1.1228 - found++;
1.1229 - }
1.1230 -
1.1231 - return found;
1.1232 -}
1.1233 -
1.1234 -/* Try and detect at least 4 packets in at most 10 packets worth of
1.1235 - * data. Need to try several possible packet sizes */
1.1236 -static void
1.1237 -mpeg_ts_type_find (GstTypeFind * tf, gpointer unused)
1.1238 -{
1.1239 - /* TS packet sizes to test: normal, DVHS packet size and
1.1240 - * FEC with 16 or 20 byte codes packet size. */
1.1241 - const gint pack_sizes[] = { 188, 192, 204, 208 };
1.1242 - const gint n_pack_sizes = sizeof (pack_sizes) / sizeof (gint);
1.1243 -
1.1244 - guint8 *data = NULL;
1.1245 - guint size = 0;
1.1246 - guint64 skipped = 0;
1.1247 -
1.1248 - while (skipped < GST_MPEGTS_TYPEFIND_MAX_SYNC) {
1.1249 - if (size < MPEGTS_HDR_SIZE) {
1.1250 - data = gst_type_find_peek (tf, skipped, GST_MPEGTS_TYPEFIND_SYNC_SIZE);
1.1251 - if (!data)
1.1252 - break;
1.1253 - size = GST_MPEGTS_TYPEFIND_SYNC_SIZE;
1.1254 - }
1.1255 -
1.1256 - /* Have at least MPEGTS_HDR_SIZE bytes at this point */
1.1257 - if (IS_MPEGTS_HEADER (data)) {
1.1258 - gint p;
1.1259 -
1.1260 - for (p = 0; p < n_pack_sizes; p++) {
1.1261 - gint found;
1.1262 -
1.1263 - /* Probe ahead at size pack_sizes[p] */
1.1264 - found = mpeg_ts_probe_headers (tf, skipped, pack_sizes[p]);
1.1265 - if (found >= GST_MPEGTS_TYPEFIND_MIN_HEADERS) {
1.1266 - gint probability;
1.1267 - GstCaps *caps = gst_caps_copy (MPEGTS_CAPS);
1.1268 -
1.1269 - gst_structure_set (gst_caps_get_structure (caps, 0), "packetsize",
1.1270 - G_TYPE_INT, pack_sizes[p], NULL);
1.1271 -
1.1272 - /* found at least 4 headers. 10 headers = MAXIMUM probability.
1.1273 - * Arbitrarily, I assigned 10% probability for each header we
1.1274 - * found, 40% -> 100% */
1.1275 -
1.1276 - probability = 10 * MIN (found, 10);
1.1277 -
1.1278 - gst_type_find_suggest (tf, probability, caps);
1.1279 - gst_caps_unref (caps);
1.1280 - return;
1.1281 - }
1.1282 - }
1.1283 - }
1.1284 - data++;
1.1285 - skipped++;
1.1286 - size--;
1.1287 - }
1.1288 -}
1.1289 -
1.1290 -/*** video/mpeg MPEG-4 elementary video stream ***/
1.1291 -
1.1292 -static GstStaticCaps mpeg4_video_caps = GST_STATIC_CAPS ("video/mpeg, "
1.1293 - "systemstream = (boolean) false, mpegversion = 4");
1.1294 -#define MPEG4_VIDEO_CAPS gst_static_caps_get(&mpeg4_video_caps)
1.1295 -static void
1.1296 -mpeg4_video_type_find (GstTypeFind * tf, gpointer unused)
1.1297 -{
1.1298 - /* Header consists of: a series of start codes (00 00 01 xx), some with
1.1299 - * associated data.
1.1300 - * Optionally, we start with a visual_object_sequence_start_code, followed by
1.1301 - * (optionally) visual_object_start_code), then the mandatory
1.1302 - * video_object_start_code and video_object_layer_start_code)
1.1303 - */
1.1304 - guint8 *data = NULL;
1.1305 - int offset = 0;
1.1306 - gboolean seen_vos = FALSE;
1.1307 -
1.1308 - while (TRUE) {
1.1309 - data = gst_type_find_peek (tf, offset, 4);
1.1310 - if (data && data[0] == 0 && data[1] == 0 && data[2] == 1) {
1.1311 - int sc = data[3];
1.1312 -
1.1313 - if (sc == 0xB0) /* visual_object_sequence_start_code */
1.1314 - offset += 5;
1.1315 - else if (sc == 0xB5) /* visual_object_start_code */
1.1316 - offset += 5;
1.1317 - else if (sc >= 0x00 && sc <= 0x1F) { /* video_object_start_code */
1.1318 - offset += 4;
1.1319 - seen_vos = TRUE;
1.1320 - } else if (sc >= 0x20 && sc <= 0x2F) { /* video_object_layer_start_code */
1.1321 - if (seen_vos) {
1.1322 - GstCaps *caps = gst_caps_copy (MPEG4_VIDEO_CAPS);
1.1323 -
1.1324 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM - 1, caps);
1.1325 - gst_caps_unref (caps);
1.1326 - return;
1.1327 - }
1.1328 - } else
1.1329 - return;
1.1330 - } else
1.1331 - return;
1.1332 - }
1.1333 -}
1.1334 -
1.1335 -/*** video/mpeg video stream ***/
1.1336 -
1.1337 -static GstStaticCaps mpeg_video_caps = GST_STATIC_CAPS ("video/mpeg, "
1.1338 - "systemstream = (boolean) false");
1.1339 -#define MPEG_VIDEO_CAPS gst_static_caps_get(&mpeg_video_caps)
1.1340 -static void
1.1341 -mpeg_video_type_find (GstTypeFind * tf, gpointer unused)
1.1342 -{
1.1343 - static const guint8 sequence_header[] = { 0x00, 0x00, 0x01, 0xb3 };
1.1344 - guint8 *data = NULL;
1.1345 -
1.1346 - data = gst_type_find_peek (tf, 0, 8);
1.1347 -
1.1348 - if (data && memcmp (data, sequence_header, 4) == 0) {
1.1349 - GstCaps *caps = gst_caps_copy (MPEG_VIDEO_CAPS);
1.1350 -
1.1351 - gst_structure_set (gst_caps_get_structure (caps, 0), "mpegversion",
1.1352 - G_TYPE_INT, 1, NULL);
1.1353 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM - 1, caps);
1.1354 - gst_caps_unref (caps);
1.1355 - }
1.1356 -}
1.1357 -
1.1358 -/*
1.1359 - * Idea is the same as MPEG system stream typefinding: We check each
1.1360 - * byte of the stream to see if - from that point on - the stream
1.1361 - * matches a predefined set of marker bits as defined in the MPEG
1.1362 - * video specs.
1.1363 - *
1.1364 - * I'm sure someone will do a chance calculation here too.
1.1365 - */
1.1366 -
1.1367 -#define GST_MPEGVID_TYPEFIND_TRY_PICTURES 6
1.1368 -#define GST_MPEGVID_TYPEFIND_TRY_SYNC (100 * 1024) /* 100 kB */
1.1369 -#define GST_MPEGVID_TYPEFIND_SYNC_SIZE 2048
1.1370 -
1.1371 -static void
1.1372 -mpeg_video_stream_type_find (GstTypeFind * tf, gpointer unused)
1.1373 -{
1.1374 - gint size = 0, found = 0;
1.1375 - guint64 skipped = 0;
1.1376 - guint8 *data = NULL;
1.1377 -
1.1378 - while (1) {
1.1379 - if (found >= GST_MPEGVID_TYPEFIND_TRY_PICTURES) {
1.1380 - GstCaps *caps = gst_caps_copy (MPEG_VIDEO_CAPS);
1.1381 -
1.1382 - gst_structure_set (gst_caps_get_structure (caps, 0), "mpegversion",
1.1383 - G_TYPE_INT, 1, NULL);
1.1384 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM - 2, caps);
1.1385 - gst_caps_unref (caps);
1.1386 - return;
1.1387 - }
1.1388 -
1.1389 - if (skipped > GST_MPEGVID_TYPEFIND_TRY_SYNC)
1.1390 - break;
1.1391 -
1.1392 - if (size < 5) {
1.1393 - data = gst_type_find_peek (tf, skipped, GST_MPEGVID_TYPEFIND_SYNC_SIZE);
1.1394 - if (!data)
1.1395 - break;
1.1396 - size = GST_MPEGVID_TYPEFIND_SYNC_SIZE;
1.1397 - }
1.1398 -
1.1399 - /* are we a sequence (0xB3) or GOP (0xB8) header? */
1.1400 - if (data[0] == 0x0 && data[1] == 0x0 && data[2] == 0x1 &&
1.1401 - (data[3] == 0xB3 || data[3] == 0xB8)) {
1.1402 - size -= 8;
1.1403 - data += 8;
1.1404 - skipped += 8;
1.1405 - if (data[3] == 0xB3)
1.1406 - continue;
1.1407 - else if (size < 4) {
1.1408 - data = gst_type_find_peek (tf, skipped, GST_MPEGVID_TYPEFIND_SYNC_SIZE);
1.1409 - size = GST_MPEGVID_TYPEFIND_SYNC_SIZE;
1.1410 - if (!data)
1.1411 - break;
1.1412 - }
1.1413 - /* else, we should now see an image */
1.1414 - }
1.1415 -
1.1416 - /* image header (and, when found, slice header) */
1.1417 - if (data[0] == 0x0 && data[1] == 0x0 && data[2] == 0x1 && data[4] == 0x0) {
1.1418 - size -= 8;
1.1419 - data += 8;
1.1420 - skipped += 8;
1.1421 - if (size < 5) {
1.1422 - data = gst_type_find_peek (tf, skipped, GST_MPEGVID_TYPEFIND_SYNC_SIZE);
1.1423 - size = GST_MPEGVID_TYPEFIND_SYNC_SIZE;
1.1424 - if (!data)
1.1425 - break;
1.1426 - }
1.1427 - if ((data[0] == 0x0 && data[1] == 0x0 &&
1.1428 - data[2] == 0x1 && data[3] == 0x1) ||
1.1429 - (data[1] == 0x0 && data[2] == 0x0 &&
1.1430 - data[3] == 0x1 && data[4] == 0x1)) {
1.1431 - size -= 4;
1.1432 - data += 4;
1.1433 - skipped += 4;
1.1434 - found += 1;
1.1435 - continue;
1.1436 - }
1.1437 - }
1.1438 -
1.1439 - size--;
1.1440 - data++;
1.1441 - skipped++;
1.1442 - }
1.1443 -}
1.1444 -
1.1445 -/*** audio/x-aiff ***/
1.1446 -
1.1447 -static GstStaticCaps aiff_caps = GST_STATIC_CAPS ("audio/x-aiff");
1.1448 -
1.1449 -#define AIFF_CAPS gst_static_caps_get(&aiff_caps)
1.1450 -static void
1.1451 -aiff_type_find (GstTypeFind * tf, gpointer unused)
1.1452 -{
1.1453 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.1454 -
1.1455 - if (data && memcmp (data, "FORM", 4) == 0) {
1.1456 - data += 8;
1.1457 - if (memcmp (data, "AIFF", 4) == 0 || memcmp (data, "AIFC", 4) == 0)
1.1458 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, AIFF_CAPS);
1.1459 - }
1.1460 -}
1.1461 -
1.1462 -/*** audio/x-aiff ***/
1.1463 -
1.1464 -static GstStaticCaps svx_caps = GST_STATIC_CAPS ("audio/x-svx");
1.1465 -
1.1466 -#define SVX_CAPS gst_static_caps_get(&svx_caps)
1.1467 -static void
1.1468 -svx_type_find (GstTypeFind * tf, gpointer unused)
1.1469 -{
1.1470 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.1471 -
1.1472 - if (data && memcmp (data, "FORM", 4) == 0) {
1.1473 - data += 8;
1.1474 - if (memcmp (data, "8SVX", 4) == 0 || memcmp (data, "16SV", 4) == 0)
1.1475 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SVX_CAPS);
1.1476 - }
1.1477 -}
1.1478 -
1.1479 -/*** audio/x-shorten ***/
1.1480 -
1.1481 -static GstStaticCaps shn_caps = GST_STATIC_CAPS ("audio/x-shorten");
1.1482 -
1.1483 -#define SHN_CAPS gst_static_caps_get(&shn_caps)
1.1484 -static void
1.1485 -shn_type_find (GstTypeFind * tf, gpointer unused)
1.1486 -{
1.1487 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.1488 -
1.1489 - if (data && memcmp (data, "ajkg", 4) == 0) {
1.1490 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SHN_CAPS);
1.1491 - }
1.1492 - data = gst_type_find_peek (tf, -8, 8);
1.1493 - if (data && memcmp (data, "SHNAMPSK", 8) == 0) {
1.1494 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SHN_CAPS);
1.1495 - }
1.1496 -}
1.1497 -
1.1498 -/*** application/x-ape ***/
1.1499 -
1.1500 -static GstStaticCaps ape_caps = GST_STATIC_CAPS ("application/x-ape");
1.1501 -
1.1502 -#define APE_CAPS gst_static_caps_get(&ape_caps)
1.1503 -static void
1.1504 -ape_type_find (GstTypeFind * tf, gpointer unused)
1.1505 -{
1.1506 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.1507 -
1.1508 - if (data && memcmp (data, "MAC ", 4) == 0) {
1.1509 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY + 10, APE_CAPS);
1.1510 - }
1.1511 -}
1.1512 -
1.1513 -/*** ISO FORMATS ***/
1.1514 -
1.1515 -/*** audio/x-m4a ***/
1.1516 -
1.1517 -static GstStaticCaps m4a_caps = GST_STATIC_CAPS ("audio/x-m4a");
1.1518 -
1.1519 -#define M4A_CAPS (gst_static_caps_get(&m4a_caps))
1.1520 -static void
1.1521 -m4a_type_find (GstTypeFind * tf, gpointer unused)
1.1522 -{
1.1523 - guint8 *data = gst_type_find_peek (tf, 4, 8);
1.1524 -
1.1525 - if (data &&
1.1526 - (memcmp (data, "ftypM4A ", 8) == 0 ||
1.1527 - memcmp (data, "ftypmp42", 8) == 0)) {
1.1528 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, M4A_CAPS);
1.1529 - }
1.1530 -}
1.1531 -
1.1532 -/*** application/x-3gp ***/
1.1533 -
1.1534 -/* The Q is there because variables can't start with a number. */
1.1535 -
1.1536 -
1.1537 -static GstStaticCaps q3gp_caps = GST_STATIC_CAPS ("application/x-3gp");
1.1538 -
1.1539 -#define Q3GP_CAPS (gst_static_caps_get(&q3gp_caps))
1.1540 -static void
1.1541 -q3gp_type_find (GstTypeFind * tf, gpointer unused)
1.1542 -{
1.1543 -
1.1544 - guint32 ftyp_size = 0;
1.1545 - gint offset = 0;
1.1546 - guint8 *data = NULL;
1.1547 -
1.1548 - if ((data = gst_type_find_peek (tf, 0, 12)) == NULL) {
1.1549 - return;
1.1550 - }
1.1551 -
1.1552 - data += 4;
1.1553 - if (memcmp (data, "ftyp", 4) != 0) {
1.1554 - return;
1.1555 - }
1.1556 -
1.1557 - /* check major brand */
1.1558 - data += 4;
1.1559 - if (memcmp (data, "3gp", 3) == 0 ||
1.1560 - memcmp (data, "3gr", 3) == 0 ||
1.1561 - memcmp (data, "3gs", 3) == 0 || memcmp (data, "3gg", 3) == 0) {
1.1562 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, Q3GP_CAPS);
1.1563 - return;
1.1564 - }
1.1565 -
1.1566 - /* check compatible brands */
1.1567 - if ((data = gst_type_find_peek (tf, 0, 4)) != NULL) {
1.1568 - ftyp_size = GST_READ_UINT32_BE (data);
1.1569 - }
1.1570 - for (offset = 16; offset < ftyp_size; offset += 4) {
1.1571 - if ((data = gst_type_find_peek (tf, offset, 3)) == NULL) {
1.1572 - break;
1.1573 - }
1.1574 - if (memcmp (data, "3gp", 3) == 0 ||
1.1575 - memcmp (data, "3gr", 3) == 0 ||
1.1576 - memcmp (data, "3gs", 3) == 0 || memcmp (data, "3gg", 3) == 0) {
1.1577 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, Q3GP_CAPS);
1.1578 - break;
1.1579 - }
1.1580 - }
1.1581 -
1.1582 - return;
1.1583 -
1.1584 -}
1.1585 -
1.1586 -/*** video/quicktime ***/
1.1587 -
1.1588 -static GstStaticCaps qt_caps = GST_STATIC_CAPS ("video/quicktime");
1.1589 -
1.1590 -#define QT_CAPS gst_static_caps_get(&qt_caps)
1.1591 -#define STRNCMP(x,y,z) (strncmp ((char*)(x), (char*)(y), z))
1.1592 -
1.1593 -static void
1.1594 -qt_type_find (GstTypeFind * tf, gpointer unused)
1.1595 -{
1.1596 - guint8 *data;
1.1597 - guint tip = 0;
1.1598 - guint64 offset = 0;
1.1599 - guint64 size;
1.1600 -
1.1601 - while ((data = gst_type_find_peek (tf, offset, 8)) != NULL) {
1.1602 - /* box/atom types that are in common with ISO base media file format */
1.1603 - if (STRNCMP (&data[4], "moov", 4) == 0 ||
1.1604 - STRNCMP (&data[4], "mdat", 4) == 0 ||
1.1605 - STRNCMP (&data[4], "ftyp", 4) == 0 ||
1.1606 - STRNCMP (&data[4], "free", 4) == 0 ||
1.1607 - STRNCMP (&data[4], "uuid", 4) == 0 ||
1.1608 - STRNCMP (&data[4], "skip", 4) == 0) {
1.1609 - if (tip == 0) {
1.1610 - tip = GST_TYPE_FIND_LIKELY;
1.1611 - } else {
1.1612 - tip = GST_TYPE_FIND_NEARLY_CERTAIN;
1.1613 - }
1.1614 - }
1.1615 - /* other box/atom types, apparently quicktime specific */
1.1616 - else if (STRNCMP (&data[4], "pnot", 4) == 0 ||
1.1617 - STRNCMP (&data[4], "PICT", 4) == 0 ||
1.1618 - STRNCMP (&data[4], "wide", 4) == 0 ||
1.1619 - STRNCMP (&data[4], "prfl", 4) == 0) {
1.1620 - tip = GST_TYPE_FIND_MAXIMUM;
1.1621 - break;
1.1622 - } else {
1.1623 - tip = 0;
1.1624 - break;
1.1625 - }
1.1626 - size = GST_READ_UINT32_BE (data);
1.1627 - if (size == 1) {
1.1628 - guint8 *sizedata;
1.1629 -
1.1630 - sizedata = gst_type_find_peek (tf, offset + 8, 8);
1.1631 - if (sizedata == NULL)
1.1632 - break;
1.1633 -
1.1634 - size = GST_READ_UINT64_BE (sizedata);
1.1635 - } else {
1.1636 - if (size < 8)
1.1637 - break;
1.1638 - }
1.1639 - offset += size;
1.1640 - }
1.1641 - if (tip > 0) {
1.1642 - gst_type_find_suggest (tf, tip, QT_CAPS);
1.1643 - }
1.1644 -};
1.1645 -
1.1646 -
1.1647 -/*** image/x-quicktime ***/
1.1648 -
1.1649 -static GstStaticCaps qtif_caps = GST_STATIC_CAPS ("image/x-quicktime");
1.1650 -
1.1651 -#define QTIF_CAPS gst_static_caps_get(&qtif_caps)
1.1652 -
1.1653 -/* how many atoms we check before we give up */
1.1654 -#define QTIF_MAXROUNDS 25
1.1655 -
1.1656 -static void
1.1657 -qtif_type_find (GstTypeFind * tf, gpointer unused)
1.1658 -{
1.1659 - const guint8 *data;
1.1660 - gboolean found_idsc = FALSE;
1.1661 - gboolean found_idat = FALSE;
1.1662 - guint64 offset = 0;
1.1663 - guint rounds = 0;
1.1664 -
1.1665 - while ((data = gst_type_find_peek (tf, offset, 8)) != NULL) {
1.1666 - guint64 size;
1.1667 -
1.1668 - size = GST_READ_UINT32_BE (data);
1.1669 - if (size == 1) {
1.1670 - const guint8 *sizedata;
1.1671 -
1.1672 - sizedata = gst_type_find_peek (tf, offset + 8, 8);
1.1673 - if (sizedata == NULL)
1.1674 - break;
1.1675 -
1.1676 - size = GST_READ_UINT64_BE (sizedata);
1.1677 - }
1.1678 - if (size < 8)
1.1679 - break;
1.1680 -
1.1681 - if (STRNCMP (data + 4, "idsc", 4) == 0)
1.1682 - found_idsc = TRUE;
1.1683 - if (STRNCMP (data + 4, "idat", 4) == 0)
1.1684 - found_idat = TRUE;
1.1685 -
1.1686 - if (found_idsc && found_idat) {
1.1687 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, QTIF_CAPS);
1.1688 - return;
1.1689 - }
1.1690 -
1.1691 - offset += size;
1.1692 - if (++rounds > QTIF_MAXROUNDS)
1.1693 - break;
1.1694 - }
1.1695 -
1.1696 - if (found_idsc || found_idat) {
1.1697 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, QTIF_CAPS);
1.1698 - return;
1.1699 - }
1.1700 -};
1.1701 -
1.1702 -/*** audio/x-mod ***/
1.1703 -
1.1704 -static GstStaticCaps mod_caps = GST_STATIC_CAPS ("audio/x-mod");
1.1705 -
1.1706 -#define MOD_CAPS gst_static_caps_get(&mod_caps)
1.1707 -/* FIXME: M15 CheckType to do */
1.1708 -static void
1.1709 -mod_type_find (GstTypeFind * tf, gpointer unused)
1.1710 -{
1.1711 - guint8 *data;
1.1712 -
1.1713 - /* MOD */
1.1714 - if ((data = gst_type_find_peek (tf, 1080, 4)) != NULL) {
1.1715 - /* Protracker and variants */
1.1716 - if ((memcmp (data, "M.K.", 4) == 0) || (memcmp (data, "M!K!", 4) == 0) ||
1.1717 - /* Star Tracker */
1.1718 - (memcmp (data, "FLT", 3) == 0 && isdigit (data[3])) ||
1.1719 - (memcmp (data, "EXO", 3) == 0 && isdigit (data[3])) ||
1.1720 - /* Oktalyzer (Amiga) */
1.1721 - (memcmp (data, "OKTA", 4) == 0) ||
1.1722 - /* Oktalyser (Atari) */
1.1723 - (memcmp (data, "CD81", 4) == 0) ||
1.1724 - /* Fasttracker */
1.1725 - (memcmp (data + 1, "CHN", 3) == 0 && isdigit (data[0])) ||
1.1726 - /* Fasttracker or Taketracker */
1.1727 - (memcmp (data + 2, "CH", 2) == 0 && isdigit (data[0])
1.1728 - && isdigit (data[1])) || (memcmp (data + 2, "CN", 2) == 0
1.1729 - && isdigit (data[0]) && isdigit (data[1]))) {
1.1730 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
1.1731 - return;
1.1732 - }
1.1733 - }
1.1734 - /* XM */
1.1735 - if ((data = gst_type_find_peek (tf, 0, 38)) != NULL) {
1.1736 - if (memcmp (data, "Extended Module: ", 17) == 0 && data[37] == 0x1A) {
1.1737 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
1.1738 - return;
1.1739 - }
1.1740 - }
1.1741 - /* OKT */
1.1742 - if (data || (data = gst_type_find_peek (tf, 0, 8)) != NULL) {
1.1743 - if (memcmp (data, "OKTASONG", 8) == 0) {
1.1744 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
1.1745 - return;
1.1746 - }
1.1747 - }
1.1748 - if (data || (data = gst_type_find_peek (tf, 0, 4)) != NULL) {
1.1749 - /* 669 */
1.1750 - if ((memcmp (data, "if", 2) == 0) || (memcmp (data, "JN", 2) == 0)) {
1.1751 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MOD_CAPS);
1.1752 - return;
1.1753 - }
1.1754 - /* AMF */
1.1755 - if ((memcmp (data, "AMF", 3) == 0 && data[3] > 10 && data[3] < 14) ||
1.1756 - /* IT */
1.1757 - (memcmp (data, "IMPM", 4) == 0) ||
1.1758 - /* MED */
1.1759 - (memcmp (data, "MMD0", 4) == 0) || (memcmp (data, "MMD1", 4) == 0) ||
1.1760 - /* MTM */
1.1761 - (memcmp (data, "MTM", 3) == 0)) {
1.1762 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
1.1763 - return;
1.1764 - }
1.1765 - /* DSM */
1.1766 - if (memcmp (data, "RIFF", 4) == 0) {
1.1767 - guint8 *data2 = gst_type_find_peek (tf, 8, 4);
1.1768 -
1.1769 - if (data2) {
1.1770 - if (memcmp (data2, "DSMF", 4) == 0) {
1.1771 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
1.1772 - return;
1.1773 - }
1.1774 - }
1.1775 - }
1.1776 - /* FAM */
1.1777 - if (memcmp (data, "FAM\xFE", 4) == 0) {
1.1778 - guint8 *data2 = gst_type_find_peek (tf, 44, 3);
1.1779 -
1.1780 - if (data2) {
1.1781 - if (memcmp (data2, "compare", 3) == 0) {
1.1782 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
1.1783 - return;
1.1784 - }
1.1785 - } else {
1.1786 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MOD_CAPS);
1.1787 - return;
1.1788 - }
1.1789 - }
1.1790 - /* GDM */
1.1791 - if (memcmp (data, "GDM\xFE", 4) == 0) {
1.1792 - guint8 *data2 = gst_type_find_peek (tf, 71, 4);
1.1793 -
1.1794 - if (data2) {
1.1795 - if (memcmp (data2, "GMFS", 4) == 0) {
1.1796 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
1.1797 - return;
1.1798 - }
1.1799 - } else {
1.1800 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MOD_CAPS);
1.1801 - return;
1.1802 - }
1.1803 - }
1.1804 - }
1.1805 - /* IMF */
1.1806 - if ((data = gst_type_find_peek (tf, 60, 4)) != NULL) {
1.1807 - if (memcmp (data, "IM10", 4) == 0) {
1.1808 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
1.1809 - return;
1.1810 - }
1.1811 - }
1.1812 - /* S3M */
1.1813 - if ((data = gst_type_find_peek (tf, 44, 4)) != NULL) {
1.1814 - if (memcmp (data, "SCRM", 4) == 0) {
1.1815 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
1.1816 - return;
1.1817 - }
1.1818 - }
1.1819 -}
1.1820 -
1.1821 -/*** application/x-shockwave-flash ***/
1.1822 -
1.1823 -static GstStaticCaps swf_caps =
1.1824 -GST_STATIC_CAPS ("application/x-shockwave-flash");
1.1825 -#define SWF_CAPS (gst_static_caps_get(&swf_caps))
1.1826 -static void
1.1827 -swf_type_find (GstTypeFind * tf, gpointer unused)
1.1828 -{
1.1829 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.1830 -
1.1831 - if (data && (data[0] == 'F' || data[0] == 'C') &&
1.1832 - data[1] == 'W' && data[2] == 'S') {
1.1833 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SWF_CAPS);
1.1834 - }
1.1835 -}
1.1836 -
1.1837 -/*** image/jpeg ***/
1.1838 -
1.1839 -static GstStaticCaps jpeg_caps = GST_STATIC_CAPS ("image/jpeg");
1.1840 -
1.1841 -#define JPEG_CAPS (gst_static_caps_get(&jpeg_caps))
1.1842 -static void
1.1843 -jpeg_type_find (GstTypeFind * tf, gpointer unused)
1.1844 -{
1.1845 - guint8 *data = gst_type_find_peek (tf, 0, 10);
1.1846 - guint8 header[2] = { 0xFF, 0xD8 };
1.1847 -
1.1848 - if (data && memcmp (data, header, 2) == 0) {
1.1849 - if (memcmp (data + 6, "JFIF", 4) == 0) {
1.1850 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, JPEG_CAPS);
1.1851 - } else if (memcmp (data + 6, "Exif", 4) == 0) {
1.1852 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, JPEG_CAPS);
1.1853 - } else {
1.1854 - gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, JPEG_CAPS);
1.1855 - }
1.1856 - }
1.1857 -}
1.1858 -
1.1859 -/*** image/bmp ***/
1.1860 -
1.1861 -static GstStaticCaps bmp_caps = GST_STATIC_CAPS ("image/bmp");
1.1862 -
1.1863 -#define BMP_CAPS (gst_static_caps_get(&bmp_caps))
1.1864 -static void
1.1865 -bmp_type_find (GstTypeFind * tf, gpointer unused)
1.1866 -{
1.1867 - guint8 *data = gst_type_find_peek (tf, 0, 18);
1.1868 -
1.1869 - if (data && memcmp (data, "BM", 2) == 0) {
1.1870 - if ((data[14] == 0x0C ||
1.1871 - data[14] == 0x28 ||
1.1872 - data[14] == 0xF0) &&
1.1873 - data[15] == 0 && data[16] == 0 && data[17] == 0) {
1.1874 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, BMP_CAPS);
1.1875 - }
1.1876 - }
1.1877 -}
1.1878 -
1.1879 -/*** image/tiff ***/
1.1880 -static GstStaticCaps tiff_caps = GST_STATIC_CAPS ("image/tiff, "
1.1881 - "endianness = (int) { BIG_ENDIAN, LITTLE_ENDIAN }");
1.1882 -#define TIFF_CAPS (gst_static_caps_get(&tiff_caps))
1.1883 -static GstStaticCaps tiff_be_caps = GST_STATIC_CAPS ("image/tiff, "
1.1884 - "endianness = (int) BIG_ENDIAN");
1.1885 -#define TIFF_BE_CAPS (gst_static_caps_get(&tiff_be_caps))
1.1886 -static GstStaticCaps tiff_le_caps = GST_STATIC_CAPS ("image/tiff, "
1.1887 - "endianness = (int) LITTLE_ENDIAN");
1.1888 -#define TIFF_LE_CAPS (gst_static_caps_get(&tiff_le_caps))
1.1889 -static void
1.1890 -tiff_type_find (GstTypeFind * tf, gpointer ununsed)
1.1891 -{
1.1892 - guint8 *data = gst_type_find_peek (tf, 0, 8);
1.1893 - guint8 le_header[4] = { 0x49, 0x49, 0x2A, 0x00 };
1.1894 - guint8 be_header[4] = { 0x4D, 0x4D, 0x00, 0x2A };
1.1895 -
1.1896 - if (data) {
1.1897 - if (memcmp (data, le_header, 4) == 0) {
1.1898 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, TIFF_LE_CAPS);
1.1899 - } else if (memcmp (data, be_header, 4) == 0) {
1.1900 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, TIFF_BE_CAPS);
1.1901 - }
1.1902 - }
1.1903 -}
1.1904 -
1.1905 -static GstStaticCaps sds_caps = GST_STATIC_CAPS ("audio/x-sds");
1.1906 -
1.1907 -#define SDS_CAPS (gst_static_caps_get(&sds_caps))
1.1908 -static void
1.1909 -sds_type_find (GstTypeFind * tf, gpointer ununsed)
1.1910 -{
1.1911 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.1912 - guint8 mask[4] = { 0xFF, 0xFF, 0x80, 0xFF };
1.1913 - guint8 match[4] = { 0xF0, 0x7E, 0, 0x01 };
1.1914 - gint x;
1.1915 -
1.1916 - if (data) {
1.1917 - for (x = 0; x < 4; x++) {
1.1918 - if ((data[x] & mask[x]) != match[x]) {
1.1919 - return;
1.1920 - }
1.1921 - }
1.1922 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SDS_CAPS);
1.1923 - }
1.1924 -}
1.1925 -
1.1926 -static GstStaticCaps ircam_caps = GST_STATIC_CAPS ("audio/x-ircam");
1.1927 -
1.1928 -#define IRCAM_CAPS (gst_static_caps_get(&ircam_caps))
1.1929 -static void
1.1930 -ircam_type_find (GstTypeFind * tf, gpointer ununsed)
1.1931 -{
1.1932 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.1933 - guint8 mask[4] = { 0xFF, 0xFF, 0xF8, 0xFF };
1.1934 - guint8 match[4] = { 0x64, 0xA3, 0x00, 0x00 };
1.1935 - gint x;
1.1936 - gboolean matched = TRUE;
1.1937 -
1.1938 - if (!data) {
1.1939 - return;
1.1940 - }
1.1941 - for (x = 0; x < 4; x++) {
1.1942 - if ((data[x] & mask[x]) != match[x]) {
1.1943 - matched = FALSE;
1.1944 - }
1.1945 - }
1.1946 - if (matched) {
1.1947 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, IRCAM_CAPS);
1.1948 - return;
1.1949 - }
1.1950 - /* now try the reverse version */
1.1951 - matched = TRUE;
1.1952 - for (x = 0; x < 4; x++) {
1.1953 - if ((data[x] & mask[3 - x]) != match[3 - x]) {
1.1954 - matched = FALSE;
1.1955 - }
1.1956 - }
1.1957 -}
1.1958 -
1.1959 -
1.1960 -/*** video/x-matroska ***/
1.1961 -static GstStaticCaps matroska_caps = GST_STATIC_CAPS ("video/x-matroska");
1.1962 -
1.1963 -#define MATROSKA_CAPS (gst_static_caps_get(&matroska_caps))
1.1964 -static void
1.1965 -matroska_type_find (GstTypeFind * tf, gpointer ununsed)
1.1966 -{
1.1967 - /* 4 bytes for EBML ID, 1 byte for header length identifier */
1.1968 - guint8 *data = gst_type_find_peek (tf, 0, 4 + 1);
1.1969 - gint len_mask = 0x80, size = 1, n = 1, total;
1.1970 - guint8 probe_data[] = { 'm', 'a', 't', 'r', 'o', 's', 'k', 'a' };
1.1971 -
1.1972 - if (!data)
1.1973 - return;
1.1974 -
1.1975 - /* ebml header? */
1.1976 - if (data[0] != 0x1A || data[1] != 0x45 || data[2] != 0xDF || data[3] != 0xA3)
1.1977 - return;
1.1978 -
1.1979 - /* length of header */
1.1980 - total = data[4];
1.1981 - while (size <= 8 && !(total & len_mask)) {
1.1982 - size++;
1.1983 - len_mask >>= 1;
1.1984 - }
1.1985 - if (size > 8)
1.1986 - return;
1.1987 - total &= (len_mask - 1);
1.1988 - while (n < size)
1.1989 - total = (total << 8) | data[4 + n++];
1.1990 -
1.1991 - /* get new data for full header, 4 bytes for EBML ID,
1.1992 - * EBML length tag and the actual header */
1.1993 - data = gst_type_find_peek (tf, 0, 4 + size + total);
1.1994 - if (!data)
1.1995 - return;
1.1996 -
1.1997 - /* the header must contain the document type 'matroska'. For now,
1.1998 - * we don't parse the whole header but simply check for the
1.1999 - * availability of that array of characters inside the header.
1.2000 - * Not fully fool-proof, but good enough. */
1.2001 - for (n = 4 + size; n <= 4 + size + total - sizeof (probe_data); n++)
1.2002 - if (!memcmp (&data[n], probe_data, sizeof (probe_data))) {
1.2003 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MATROSKA_CAPS);
1.2004 - break;
1.2005 - }
1.2006 -}
1.2007 -
1.2008 -/*** video/x-dv ***/
1.2009 -
1.2010 -static GstStaticCaps dv_caps = GST_STATIC_CAPS ("video/x-dv, "
1.2011 - "systemstream = (boolean) true");
1.2012 -#define DV_CAPS (gst_static_caps_get(&dv_caps))
1.2013 -static void
1.2014 -dv_type_find (GstTypeFind * tf, gpointer private)
1.2015 -{
1.2016 - guint8 *data;
1.2017 -
1.2018 - data = gst_type_find_peek (tf, 0, 5);
1.2019 -
1.2020 - /* check for DIF and DV flag */
1.2021 - if (data && (data[0] == 0x1f) && (data[1] == 0x07) && (data[2] == 0x00) &&
1.2022 - ((data[4] & 0x01) == 0)) {
1.2023 - gchar *format;
1.2024 - GstCaps *caps = gst_caps_copy (DV_CAPS);
1.2025 -
1.2026 - if (data[3] & 0x80) {
1.2027 - format = "PAL";
1.2028 - } else {
1.2029 - format = "NTSC";
1.2030 - }
1.2031 - gst_structure_set (gst_caps_get_structure (caps, 0), "format",
1.2032 - G_TYPE_STRING, format, NULL);
1.2033 -
1.2034 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, caps);
1.2035 - gst_caps_unref (caps);
1.2036 - }
1.2037 -}
1.2038 -
1.2039 -
1.2040 -/*** application/ogg and application/x-annodex ***/
1.2041 -static GstStaticCaps ogg_caps = GST_STATIC_CAPS ("application/ogg");
1.2042 -static GstStaticCaps annodex_caps = GST_STATIC_CAPS ("application/x-annodex");
1.2043 -
1.2044 -#define OGGANX_CAPS (gst_static_caps_get(&annodex_caps))
1.2045 -
1.2046 -static void
1.2047 -ogganx_type_find (GstTypeFind * tf, gpointer private)
1.2048 -{
1.2049 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.2050 -
1.2051 - if ((data != NULL) && (memcmp (data, "OggS", 4) == 0)) {
1.2052 -
1.2053 - /* Check for an annodex fishbone header */
1.2054 - data = gst_type_find_peek (tf, 28, 8);
1.2055 - if (data && memcmp (data, "fishead\0", 8) == 0)
1.2056 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGGANX_CAPS);
1.2057 -
1.2058 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,
1.2059 - gst_static_caps_get (&ogg_caps));
1.2060 - }
1.2061 -}
1.2062 -
1.2063 -/*** audio/x-vorbis ***/
1.2064 -static GstStaticCaps vorbis_caps = GST_STATIC_CAPS ("audio/x-vorbis");
1.2065 -
1.2066 -#define VORBIS_CAPS (gst_static_caps_get(&vorbis_caps))
1.2067 -static void
1.2068 -vorbis_type_find (GstTypeFind * tf, gpointer private)
1.2069 -{
1.2070 - guint8 *data = gst_type_find_peek (tf, 0, 30);
1.2071 -
1.2072 - if (data) {
1.2073 - guint blocksize_0;
1.2074 - guint blocksize_1;
1.2075 -
1.2076 - /* 1 byte packet type (identification=0x01)
1.2077 - 6 byte string "vorbis"
1.2078 - 4 byte vorbis version */
1.2079 - if (memcmp (data, "\001vorbis\000\000\000\000", 11) != 0)
1.2080 - return;
1.2081 - data += 11;
1.2082 - /* 1 byte channels must be != 0 */
1.2083 - if (data[0] == 0)
1.2084 - return;
1.2085 - data++;
1.2086 - /* 4 byte samplerate must be != 0 */
1.2087 - if (*((guint32 *) data) == 0)
1.2088 - return;
1.2089 - data += 16;
1.2090 - /* blocksize checks */
1.2091 - blocksize_0 = data[0] & 0x0F;
1.2092 - blocksize_1 = (data[0] & 0xF0) >> 4;
1.2093 - if (blocksize_0 > blocksize_1)
1.2094 - return;
1.2095 - if (blocksize_0 < 6 || blocksize_0 > 13)
1.2096 - return;
1.2097 - if (blocksize_1 < 6 || blocksize_1 > 13)
1.2098 - return;
1.2099 - data++;
1.2100 - /* framing bit */
1.2101 - if ((data[0] & 0x01) != 1)
1.2102 - return;
1.2103 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, VORBIS_CAPS);
1.2104 - }
1.2105 -}
1.2106 -
1.2107 -/*** video/x-theora ***/
1.2108 -
1.2109 -static GstStaticCaps theora_caps = GST_STATIC_CAPS ("video/x-theora");
1.2110 -
1.2111 -#define THEORA_CAPS (gst_static_caps_get(&theora_caps))
1.2112 -static void
1.2113 -theora_type_find (GstTypeFind * tf, gpointer private)
1.2114 -{
1.2115 - guint8 *data = gst_type_find_peek (tf, 0, 7); //42);
1.2116 -
1.2117 - if (data) {
1.2118 - if (data[0] != 0x80)
1.2119 - return;
1.2120 - if (memcmp (&data[1], "theora", 6) != 0)
1.2121 - return;
1.2122 - /* FIXME: make this more reliable when specs are out */
1.2123 -
1.2124 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, THEORA_CAPS);
1.2125 - }
1.2126 -}
1.2127 -
1.2128 -/*** application/x-ogm-video or audio***/
1.2129 -
1.2130 -static GstStaticCaps ogmvideo_caps =
1.2131 -GST_STATIC_CAPS ("application/x-ogm-video");
1.2132 -#define OGMVIDEO_CAPS (gst_static_caps_get(&ogmvideo_caps))
1.2133 -static void
1.2134 -ogmvideo_type_find (GstTypeFind * tf, gpointer private)
1.2135 -{
1.2136 - guint8 *data = gst_type_find_peek (tf, 0, 9);
1.2137 -
1.2138 - if (data) {
1.2139 - if (memcmp (data, "\001video\000\000\000", 9) != 0)
1.2140 - return;
1.2141 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGMVIDEO_CAPS);
1.2142 - }
1.2143 -}
1.2144 -
1.2145 -static GstStaticCaps ogmaudio_caps =
1.2146 -GST_STATIC_CAPS ("application/x-ogm-audio");
1.2147 -#define OGMAUDIO_CAPS (gst_static_caps_get(&ogmaudio_caps))
1.2148 -static void
1.2149 -ogmaudio_type_find (GstTypeFind * tf, gpointer private)
1.2150 -{
1.2151 - guint8 *data = gst_type_find_peek (tf, 0, 9);
1.2152 -
1.2153 - if (data) {
1.2154 - if (memcmp (data, "\001audio\000\000\000", 9) != 0)
1.2155 - return;
1.2156 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGMAUDIO_CAPS);
1.2157 - }
1.2158 -}
1.2159 -
1.2160 -static GstStaticCaps ogmtext_caps = GST_STATIC_CAPS ("application/x-ogm-text");
1.2161 -
1.2162 -#define OGMTEXT_CAPS (gst_static_caps_get(&ogmtext_caps))
1.2163 -static void
1.2164 -ogmtext_type_find (GstTypeFind * tf, gpointer private)
1.2165 -{
1.2166 - guint8 *data = gst_type_find_peek (tf, 0, 9);
1.2167 -
1.2168 - if (data) {
1.2169 - if (memcmp (data, "\001text\000\000\000\000", 9) != 0)
1.2170 - return;
1.2171 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGMTEXT_CAPS);
1.2172 - }
1.2173 -}
1.2174 -
1.2175 -/*** audio/x-speex ***/
1.2176 -
1.2177 -static GstStaticCaps speex_caps = GST_STATIC_CAPS ("audio/x-speex");
1.2178 -
1.2179 -#define SPEEX_CAPS (gst_static_caps_get(&speex_caps))
1.2180 -static void
1.2181 -speex_type_find (GstTypeFind * tf, gpointer private)
1.2182 -{
1.2183 - guint8 *data = gst_type_find_peek (tf, 0, 80);
1.2184 -
1.2185 - if (data) {
1.2186 - /* 8 byte string "Speex "
1.2187 - 24 byte speex version string + int */
1.2188 - if (memcmp (data, "Speex ", 8) != 0)
1.2189 - return;
1.2190 - data += 32;
1.2191 -
1.2192 - /* 4 byte header size >= 80 */
1.2193 - if (GST_READ_UINT32_LE (data) < 80)
1.2194 - return;
1.2195 - data += 4;
1.2196 -
1.2197 - /* 4 byte sample rate <= 48000 */
1.2198 - if (GST_READ_UINT32_LE (data) > 48000)
1.2199 - return;
1.2200 - data += 4;
1.2201 -
1.2202 - /* currently there are only 3 speex modes. */
1.2203 - if (GST_READ_UINT32_LE (data) > 3)
1.2204 - return;
1.2205 - data += 12;
1.2206 -
1.2207 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SPEEX_CAPS);
1.2208 - }
1.2209 -}
1.2210 -
1.2211 -/*** application/x-ogg-skeleton ***/
1.2212 -static GstStaticCaps ogg_skeleton_caps =
1.2213 -GST_STATIC_CAPS ("application/x-ogg-skeleton, parsed=(boolean)FALSE");
1.2214 -#define OGG_SKELETON_CAPS (gst_static_caps_get(&ogg_skeleton_caps))
1.2215 -static void
1.2216 -oggskel_type_find (GstTypeFind * tf, gpointer private)
1.2217 -{
1.2218 - guint8 *data = gst_type_find_peek (tf, 0, 12);
1.2219 -
1.2220 - if (data) {
1.2221 - /* 8 byte string "fishead\0" for the ogg skeleton stream */
1.2222 - if (memcmp (data, "fishead\0", 8) != 0)
1.2223 - return;
1.2224 - data += 8;
1.2225 -
1.2226 - /* Require that the header contains version 3.0 */
1.2227 - if (GST_READ_UINT16_LE (data) != 3)
1.2228 - return;
1.2229 - data += 2;
1.2230 - if (GST_READ_UINT16_LE (data) != 0)
1.2231 - return;
1.2232 -
1.2233 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGG_SKELETON_CAPS);
1.2234 - }
1.2235 -}
1.2236 -
1.2237 -static GstStaticCaps cmml_caps = GST_STATIC_CAPS ("text/x-cmml");
1.2238 -
1.2239 -#define CMML_CAPS (gst_static_caps_get(&cmml_caps))
1.2240 -static void
1.2241 -cmml_type_find (GstTypeFind * tf, gpointer private)
1.2242 -{
1.2243 - /* Header is 12 bytes minimum (though we don't check the minor version */
1.2244 - guint8 *data = gst_type_find_peek (tf, 0, 12);
1.2245 -
1.2246 - if (data) {
1.2247 -
1.2248 - /* 8 byte string "CMML\0\0\0\0" for the magic number */
1.2249 - if (memcmp (data, "CMML\0\0\0\0", 8) != 0)
1.2250 - return;
1.2251 - data += 8;
1.2252 -
1.2253 - /* Require that the header contains at least version 2.0 */
1.2254 - if (GST_READ_UINT16_LE (data) < 2)
1.2255 - return;
1.2256 -
1.2257 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, CMML_CAPS);
1.2258 - }
1.2259 -}
1.2260 -
1.2261 -/*** application/x-tar ***/
1.2262 -
1.2263 -static GstStaticCaps tar_caps = GST_STATIC_CAPS ("application/x-tar");
1.2264 -
1.2265 -#define TAR_CAPS (gst_static_caps_get(&tar_caps))
1.2266 -#define OLDGNU_MAGIC "ustar " /* 7 chars and a NUL */
1.2267 -#define NEWGNU_MAGIC "ustar" /* 5 chars and a NUL */
1.2268 -static void
1.2269 -tar_type_find (GstTypeFind * tf, gpointer unused)
1.2270 -{
1.2271 - guint8 *data = gst_type_find_peek (tf, 257, 8);
1.2272 -
1.2273 - /* of course we are not certain, but we don't want other typefind funcs
1.2274 - * to detect formats of files within the tar archive, e.g. mp3s */
1.2275 - if (data) {
1.2276 - if (memcmp (data, OLDGNU_MAGIC, 8) == 0) { /* sic */
1.2277 - gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, TAR_CAPS);
1.2278 - } else if (memcmp (data, NEWGNU_MAGIC, 6) == 0 && /* sic */
1.2279 - g_ascii_isdigit (data[6]) && g_ascii_isdigit (data[7])) {
1.2280 - gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, TAR_CAPS);
1.2281 - }
1.2282 - }
1.2283 -}
1.2284 -
1.2285 -/*** application/x-ar ***/
1.2286 -
1.2287 -static GstStaticCaps ar_caps = GST_STATIC_CAPS ("application/x-ar");
1.2288 -
1.2289 -#define AR_CAPS (gst_static_caps_get(&ar_caps))
1.2290 -static void
1.2291 -ar_type_find (GstTypeFind * tf, gpointer unused)
1.2292 -{
1.2293 - guint8 *data = gst_type_find_peek (tf, 0, 24);
1.2294 -
1.2295 - if (data && memcmp (data, "!<arch>", 7) == 0) {
1.2296 - gint i;
1.2297 -
1.2298 - for (i = 7; i < 24; ++i) {
1.2299 - if (!g_ascii_isprint (data[i]) && data[i] != '\n') {
1.2300 - gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, AR_CAPS);
1.2301 - }
1.2302 - }
1.2303 -
1.2304 - gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, AR_CAPS);
1.2305 - }
1.2306 -}
1.2307 -
1.2308 -/*** audio/x-au ***/
1.2309 -
1.2310 -/* NOTE: we cannot replace this function with TYPE_FIND_REGISTER_START_WITH,
1.2311 - * as it is only possible to register one typefind factory per 'name'
1.2312 - * (which is in this case the caps), and the first one would be replaced by
1.2313 - * the second one. */
1.2314 -static GstStaticCaps au_caps = GST_STATIC_CAPS ("audio/x-au");
1.2315 -
1.2316 -#define AU_CAPS (gst_static_caps_get(&au_caps))
1.2317 -static void
1.2318 -au_type_find (GstTypeFind * tf, gpointer unused)
1.2319 -{
1.2320 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.2321 -
1.2322 - if (data) {
1.2323 - if (memcmp (data, ".snd", 4) == 0 || memcmp (data, "dns.", 4) == 0) {
1.2324 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, AU_CAPS);
1.2325 - }
1.2326 - }
1.2327 -}
1.2328 -
1.2329 -
1.2330 -/*** video/x-nuv ***/
1.2331 -
1.2332 -/* NOTE: we cannot replace this function with TYPE_FIND_REGISTER_START_WITH,
1.2333 - * as it is only possible to register one typefind factory per 'name'
1.2334 - * (which is in this case the caps), and the first one would be replaced by
1.2335 - * the second one. */
1.2336 -static GstStaticCaps nuv_caps = GST_STATIC_CAPS ("video/x-nuv");
1.2337 -
1.2338 -#define NUV_CAPS (gst_static_caps_get(&nuv_caps))
1.2339 -static void
1.2340 -nuv_type_find (GstTypeFind * tf, gpointer unused)
1.2341 -{
1.2342 - guint8 *data = gst_type_find_peek (tf, 0, 11);
1.2343 -
1.2344 - if (data) {
1.2345 - if (memcmp (data, "MythTVVideo", 11) == 0
1.2346 - || memcmp (data, "NuppelVideo", 11) == 0) {
1.2347 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, NUV_CAPS);
1.2348 - }
1.2349 - }
1.2350 -}
1.2351 -
1.2352 -/*** audio/x-paris ***/
1.2353 -/* NOTE: do not replace this function with two TYPE_FIND_REGISTER_START_WITH */
1.2354 -static GstStaticCaps paris_caps = GST_STATIC_CAPS ("audio/x-paris");
1.2355 -
1.2356 -#define PARIS_CAPS (gst_static_caps_get(&paris_caps))
1.2357 -static void
1.2358 -paris_type_find (GstTypeFind * tf, gpointer unused)
1.2359 -{
1.2360 - guint8 *data = gst_type_find_peek (tf, 0, 4);
1.2361 -
1.2362 - if (data) {
1.2363 - if (memcmp (data, " paf", 4) == 0 || memcmp (data, "fap ", 4) == 0) {
1.2364 - gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, PARIS_CAPS);
1.2365 - }
1.2366 - }
1.2367 -}
1.2368 -
1.2369 -/*** audio/iLBC-sh ***/
1.2370 -/* NOTE: do not replace this function with two TYPE_FIND_REGISTER_START_WITH */
1.2371 -static GstStaticCaps ilbc_caps = GST_STATIC_CAPS ("audio/iLBC-sh");
1.2372 -
1.2373 -#define ILBC_CAPS (gst_static_caps_get(&ilbc_caps))
1.2374 -static void
1.2375 -ilbc_type_find (GstTypeFind * tf, gpointer unused)
1.2376 -{
1.2377 - guint8 *data = gst_type_find_peek (tf, 0, 8);
1.2378 -
1.2379 - if (data) {
1.2380 - if (memcmp (data, "#!iLBC30", 8) == 0 || memcmp (data, "#!iLBC20", 8) == 0) {
1.2381 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, ILBC_CAPS);
1.2382 - }
1.2383 - }
1.2384 -}
1.2385 -
1.2386 -/*** application/x-ms-dos-executable ***/
1.2387 -
1.2388 -static GstStaticCaps msdos_caps =
1.2389 -GST_STATIC_CAPS ("application/x-ms-dos-executable");
1.2390 -#define MSDOS_CAPS (gst_static_caps_get(&msdos_caps))
1.2391 -/* see http://www.madchat.org/vxdevl/papers/winsys/pefile/pefile.htm */
1.2392 -static void
1.2393 -msdos_type_find (GstTypeFind * tf, gpointer unused)
1.2394 -{
1.2395 - guint8 *data = gst_type_find_peek (tf, 0, 64);
1.2396 -
1.2397 - if (data && data[0] == 'M' && data[1] == 'Z' &&
1.2398 - GST_READ_UINT16_LE (data + 8) == 4) {
1.2399 - guint32 pe_offset = GST_READ_UINT32_LE (data + 60);
1.2400 -
1.2401 - data = gst_type_find_peek (tf, pe_offset, 2);
1.2402 - if (data && data[0] == 'P' && data[1] == 'E') {
1.2403 - gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, MSDOS_CAPS);
1.2404 - }
1.2405 - }
1.2406 -}
1.2407 -
1.2408 -/*** application/x-mmsh ***/
1.2409 -
1.2410 -static GstStaticCaps mmsh_caps = GST_STATIC_CAPS ("application/x-mmsh");
1.2411 -
1.2412 -#define MMSH_CAPS gst_static_caps_get(&mmsh_caps)
1.2413 -
1.2414 -/* This is to recognise mssh-over-http */
1.2415 -static void
1.2416 -mmsh_type_find (GstTypeFind * tf, gpointer unused)
1.2417 -{
1.2418 - static const guint8 asf_marker[16] = { 0x30, 0x26, 0xb2, 0x75, 0x8e, 0x66,
1.2419 - 0xcf, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c
1.2420 - };
1.2421 -
1.2422 - guint8 *data;
1.2423 -
1.2424 - data = gst_type_find_peek (tf, 0, 2 + 2 + 4 + 2 + 2 + 16);
1.2425 - if (data && data[0] == 0x24 && data[1] == 0x48 &&
1.2426 - GST_READ_UINT16_LE (data + 2) > 2 + 2 + 4 + 2 + 2 + 16 &&
1.2427 - memcmp (data + 2 + 2 + 4 + 2 + 2, asf_marker, 16) == 0) {
1.2428 - GstCaps *caps = gst_caps_copy (MMSH_CAPS);
1.2429 -
1.2430 - gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, caps);
1.2431 - gst_caps_unref (caps);
1.2432 - return;
1.2433 - }
1.2434 -}
1.2435 -
1.2436 -/*** generic typefind for streams that have some data at a specific position***/
1.2437 -typedef struct
1.2438 -{
1.2439 - const guint8 *data;
1.2440 - guint size;
1.2441 - guint probability;
1.2442 - GstCaps *caps;
1.2443 -}
1.2444 -GstTypeFindData;
1.2445 -
1.2446 -static void
1.2447 -start_with_type_find (GstTypeFind * tf, gpointer private)
1.2448 -{
1.2449 - GstTypeFindData *start_with = (GstTypeFindData *) private;
1.2450 - guint8 *data;
1.2451 -
1.2452 - GST_LOG ("trying to find mime type %s with the first %u bytes of data",
1.2453 - gst_structure_get_name (gst_caps_get_structure (start_with->caps, 0)),
1.2454 - start_with->size);
1.2455 - data = gst_type_find_peek (tf, 0, start_with->size);
1.2456 - if (data && memcmp (data, start_with->data, start_with->size) == 0) {
1.2457 - gst_type_find_suggest (tf, start_with->probability, start_with->caps);
1.2458 - }
1.2459 -}
1.2460 -
1.2461 -static void
1.2462 -sw_data_destroy (GstTypeFindData * sw_data)
1.2463 -{
1.2464 - if (G_LIKELY (sw_data->caps != NULL))
1.2465 - gst_caps_unref (sw_data->caps);
1.2466 - g_free (sw_data);
1.2467 -}
1.2468 -
1.2469 -#define TYPE_FIND_REGISTER_START_WITH(plugin,name,rank,ext,_data,_size,_probability)\
1.2470 -G_BEGIN_DECLS{ \
1.2471 - GstTypeFindData *sw_data = g_new (GstTypeFindData, 1); \
1.2472 - sw_data->data = (const guint8 *)_data; \
1.2473 - sw_data->size = _size; \
1.2474 - sw_data->probability = _probability; \
1.2475 - sw_data->caps = gst_caps_new_simple (name, NULL); \
1.2476 - if (!gst_type_find_register (plugin, name, rank, start_with_type_find,\
1.2477 - ext, sw_data->caps, sw_data, \
1.2478 - (GDestroyNotify) (sw_data_destroy))) { \
1.2479 - gst_caps_unref (sw_data->caps); \
1.2480 - g_free (sw_data); \
1.2481 - } \
1.2482 -}G_END_DECLS
1.2483 -
1.2484 -/*** same for riff types ***/
1.2485 -
1.2486 -static void
1.2487 -riff_type_find (GstTypeFind * tf, gpointer private)
1.2488 -{
1.2489 - GstTypeFindData *riff_data = (GstTypeFindData *) private;
1.2490 - guint8 *data = gst_type_find_peek (tf, 0, 12);
1.2491 -
1.2492 - if (data && memcmp (data, "RIFF", 4) == 0) {
1.2493 - data += 8;
1.2494 - if (memcmp (data, riff_data->data, 4) == 0)
1.2495 - gst_type_find_suggest (tf, riff_data->probability, riff_data->caps);
1.2496 - }
1.2497 -}
1.2498 -
1.2499 -#define TYPE_FIND_REGISTER_RIFF(plugin,name,rank,ext,_data) \
1.2500 -G_BEGIN_DECLS{ \
1.2501 - GstTypeFindData *sw_data = g_new (GstTypeFindData, 1); \
1.2502 - sw_data->data = (gpointer)_data; \
1.2503 - sw_data->size = 4; \
1.2504 - sw_data->probability = GST_TYPE_FIND_MAXIMUM; \
1.2505 - sw_data->caps = gst_caps_new_simple (name, NULL); \
1.2506 - if (!gst_type_find_register (plugin, name, rank, riff_type_find, \
1.2507 - ext, sw_data->caps, sw_data, \
1.2508 - (GDestroyNotify) (sw_data_destroy))) { \
1.2509 - gst_caps_unref (sw_data->caps); \
1.2510 - g_free (sw_data); \
1.2511 - } \
1.2512 -}G_END_DECLS
1.2513 -
1.2514 -
1.2515 -
1.2516 -/*** plugin initialization ***/
1.2517 -
1.2518 -#define TYPE_FIND_REGISTER(plugin,name,rank,func,ext,caps,priv,notify) \
1.2519 -G_BEGIN_DECLS{\
1.2520 - if (!gst_type_find_register (plugin, name, rank, func, ext, caps, priv, notify))\
1.2521 - return FALSE; \
1.2522 -}G_END_DECLS
1.2523 -static gboolean
1.2524 -plugin_init (GstPlugin * plugin)
1.2525 -{
1.2526 - /* can't initialize this via a struct as caps can't be statically initialized */
1.2527 -
1.2528 - /* note: asx/wax/wmx are XML files, asf doesn't handle them */
1.2529 - /* FIXME-0.11: these should be const,
1.2530 - this requires gstreamer/gst/gsttypefind::gst_type_find_register()
1.2531 - to have define the parameter as const
1.2532 - */
1.2533 - static gchar *asf_exts[] = { "asf", "wm", "wma", "wmv", NULL };
1.2534 - static gchar *au_exts[] = { "au", "snd", NULL };
1.2535 - static gchar *avi_exts[] = { "avi", NULL };
1.2536 - static gchar *cdxa_exts[] = { "dat", NULL };
1.2537 - static gchar *flac_exts[] = { "flac", NULL };
1.2538 - static gchar *flx_exts[] = { "flc", "fli", NULL };
1.2539 - static gchar *id3_exts[] =
1.2540 - { "mp3", "mp2", "mp1", "mpga", "ogg", "flac", "tta", NULL };
1.2541 - static gchar *apetag_exts[] = { "ape", "mpc", "wv", NULL }; /* and mp3 and wav? */
1.2542 - static gchar *tta_exts[] = { "tta", NULL };
1.2543 - static gchar *mod_exts[] = { "669", "amf", "dsm", "gdm", "far", "imf",
1.2544 - "it", "med", "mod", "mtm", "okt", "sam",
1.2545 - "s3m", "stm", "stx", "ult", "xm", NULL
1.2546 - };
1.2547 - static gchar *mp3_exts[] = { "mp3", "mp2", "mp1", "mpga", NULL };
1.2548 - static gchar *ac3_exts[] = { "ac3", NULL };
1.2549 - static gchar *musepack_exts[] = { "mpc", NULL };
1.2550 - static gchar *mpeg_sys_exts[] = { "mpe", "mpeg", "mpg", NULL };
1.2551 - static gchar *mpeg_video_exts[] = { "mpv", "mpeg", "mpg", NULL };
1.2552 - static gchar *mpeg_ts_exts[] = { "ts", NULL };
1.2553 - static gchar *ogg_exts[] = { "anx", "ogg", "ogm", NULL };
1.2554 - static gchar *qt_exts[] = { "mov", NULL };
1.2555 - static gchar *qtif_exts[] = { "qif", "qtif", "qti", NULL };
1.2556 - static gchar *rm_exts[] = { "ra", "ram", "rm", "rmvb", NULL };
1.2557 - static gchar *swf_exts[] = { "swf", "swfl", NULL };
1.2558 - static gchar *utf8_exts[] = { "txt", NULL };
1.2559 - static gchar *wav_exts[] = { "wav", NULL };
1.2560 - static gchar *aiff_exts[] = { "aiff", "aif", "aifc", NULL };
1.2561 - static gchar *svx_exts[] = { "iff", "svx", NULL };
1.2562 - static gchar *paris_exts[] = { "paf", NULL };
1.2563 - static gchar *nist_exts[] = { "nist", NULL };
1.2564 - static gchar *voc_exts[] = { "voc", NULL };
1.2565 - static gchar *sds_exts[] = { "sds", NULL };
1.2566 - static gchar *ircam_exts[] = { "sf", NULL };
1.2567 - static gchar *w64_exts[] = { "w64", NULL };
1.2568 - static gchar *shn_exts[] = { "shn", NULL };
1.2569 - static gchar *ape_exts[] = { "ape", NULL };
1.2570 - static gchar *uri_exts[] = { "ram", NULL };
1.2571 - static gchar *smil_exts[] = { "smil", NULL };
1.2572 - static gchar *html_exts[] = { "htm", "html", NULL };
1.2573 - static gchar *xml_exts[] = { "xml", NULL };
1.2574 - static gchar *jpeg_exts[] = { "jpg", "jpe", "jpeg", NULL };
1.2575 - static gchar *gif_exts[] = { "gif", NULL };
1.2576 - static gchar *png_exts[] = { "png", NULL };
1.2577 - static gchar *bmp_exts[] = { "bmp", NULL };
1.2578 - static gchar *tiff_exts[] = { "tif", "tiff", NULL };
1.2579 - static gchar *matroska_exts[] = { "mkv", "mka", NULL };
1.2580 - static gchar *mve_exts[] = { "mve", NULL };
1.2581 - static gchar *dv_exts[] = { "dv", "dif", NULL };
1.2582 - static gchar *amr_exts[] = { "amr", NULL };
1.2583 - static gchar *ilbc_exts[] = { "ilbc", NULL };
1.2584 - static gchar *sid_exts[] = { "sid", NULL };
1.2585 - static gchar *xcf_exts[] = { "xcf", NULL };
1.2586 - static gchar *mng_exts[] = { "mng", NULL };
1.2587 - static gchar *jng_exts[] = { "jng", NULL };
1.2588 - static gchar *xpm_exts[] = { "xpm", NULL };
1.2589 - static gchar *ras_exts[] = { "ras", NULL };
1.2590 - static gchar *bz2_exts[] = { "bz2", NULL };
1.2591 - static gchar *gz_exts[] = { "gz", NULL };
1.2592 - static gchar *zip_exts[] = { "zip", NULL };
1.2593 - static gchar *compress_exts[] = { "Z", NULL };
1.2594 - static gchar *m4a_exts[] = { "m4a", NULL };
1.2595 - static gchar *q3gp_exts[] = { "3gp", NULL };
1.2596 - static gchar *aac_exts[] = { "aac", NULL };
1.2597 - static gchar *spc_exts[] = { "spc", NULL };
1.2598 - static gchar *wavpack_exts[] = { "wv", "wvp", NULL };
1.2599 - static gchar *wavpack_correction_exts[] = { "wvc", NULL };
1.2600 - static gchar *rar_exts[] = { "rar", NULL };
1.2601 - static gchar *tar_exts[] = { "tar", NULL };
1.2602 - static gchar *ar_exts[] = { "a", NULL };
1.2603 - static gchar *msdos_exts[] = { "dll", "exe", "ocx", "sys", "scr",
1.2604 - "msstyles", "cpl", NULL
1.2605 - };
1.2606 - static gchar *flv_exts[] = { "flv", NULL };
1.2607 - static gchar *m4v_exts[] = { "m4v", NULL };
1.2608 - static gchar *nuv_exts[] = { "nuv", NULL };
1.2609 -
1.2610 - GST_DEBUG_CATEGORY_INIT (type_find_debug, "typefindfunctions",
1.2611 - GST_DEBUG_FG_GREEN | GST_DEBUG_BG_RED, "generic type find functions");
1.2612 -
1.2613 - /* must use strings, macros don't accept initializers */
1.2614 - TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-ms-asf", GST_RANK_SECONDARY,
1.2615 - asf_exts,
1.2616 - "\060\046\262\165\216\146\317\021\246\331\000\252\000\142\316\154", 16,
1.2617 - GST_TYPE_FIND_MAXIMUM);
1.2618 - TYPE_FIND_REGISTER (plugin, "audio/x-musepack", GST_RANK_PRIMARY,
1.2619 - musepack_type_find, musepack_exts, MUSEPACK_CAPS, NULL, NULL);
1.2620 - TYPE_FIND_REGISTER (plugin, "audio/x-au", GST_RANK_MARGINAL,
1.2621 - au_type_find, au_exts, AU_CAPS, NULL, NULL);
1.2622 - TYPE_FIND_REGISTER_RIFF (plugin, "video/x-msvideo", GST_RANK_PRIMARY,
1.2623 - avi_exts, "AVI ");
1.2624 - TYPE_FIND_REGISTER_RIFF (plugin, "video/x-cdxa", GST_RANK_PRIMARY,
1.2625 - cdxa_exts, "CDXA");
1.2626 - TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-vcd", GST_RANK_PRIMARY,
1.2627 - cdxa_exts, "\000\377\377\377\377\377\377\377\377\377\377\000", 12,
1.2628 - GST_TYPE_FIND_MAXIMUM);
1.2629 - TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-flac", GST_RANK_PRIMARY,
1.2630 - flac_exts, "fLaC", 4, GST_TYPE_FIND_MAXIMUM);
1.2631 - TYPE_FIND_REGISTER (plugin, "video/x-fli", GST_RANK_MARGINAL, flx_type_find,
1.2632 - flx_exts, FLX_CAPS, NULL, NULL);
1.2633 - TYPE_FIND_REGISTER (plugin, "application/x-id3v2", GST_RANK_PRIMARY + 3,
1.2634 - id3v2_type_find, id3_exts, ID3_CAPS, NULL, NULL);
1.2635 - TYPE_FIND_REGISTER (plugin, "application/x-id3v1", GST_RANK_PRIMARY + 1,
1.2636 - id3v1_type_find, id3_exts, ID3_CAPS, NULL, NULL);
1.2637 - TYPE_FIND_REGISTER (plugin, "application/x-apetag", GST_RANK_PRIMARY + 2,
1.2638 - apetag_type_find, apetag_exts, APETAG_CAPS, NULL, NULL);
1.2639 - TYPE_FIND_REGISTER (plugin, "audio/x-ttafile", GST_RANK_PRIMARY,
1.2640 - tta_type_find, tta_exts, TTA_CAPS, NULL, NULL);
1.2641 - TYPE_FIND_REGISTER (plugin, "audio/x-mod", GST_RANK_SECONDARY, mod_type_find,
1.2642 - mod_exts, MOD_CAPS, NULL, NULL);
1.2643 - TYPE_FIND_REGISTER (plugin, "audio/mpeg", GST_RANK_PRIMARY, mp3_type_find,
1.2644 - mp3_exts, MP3_CAPS, NULL, NULL);
1.2645 - TYPE_FIND_REGISTER (plugin, "audio/x-ac3", GST_RANK_PRIMARY, ac3_type_find,
1.2646 - ac3_exts, AC3_CAPS, NULL, NULL);
1.2647 - TYPE_FIND_REGISTER (plugin, "video/mpeg1", GST_RANK_PRIMARY,
1.2648 - mpeg1_sys_type_find, mpeg_sys_exts, MPEG_SYS_CAPS, NULL, NULL);
1.2649 - TYPE_FIND_REGISTER (plugin, "video/mpeg2", GST_RANK_SECONDARY,
1.2650 - mpeg2_sys_type_find, mpeg_sys_exts, MPEG_SYS_CAPS, NULL, NULL);
1.2651 - TYPE_FIND_REGISTER (plugin, "video/mpegts", GST_RANK_PRIMARY,
1.2652 - mpeg_ts_type_find, mpeg_ts_exts, MPEGTS_CAPS, NULL, NULL);
1.2653 - TYPE_FIND_REGISTER (plugin, "application/ogg", GST_RANK_PRIMARY,
1.2654 - ogganx_type_find, ogg_exts, OGGANX_CAPS, NULL, NULL);
1.2655 - TYPE_FIND_REGISTER (plugin, "video/mpeg", GST_RANK_SECONDARY,
1.2656 - mpeg_video_type_find, mpeg_video_exts, MPEG_VIDEO_CAPS, NULL, NULL);
1.2657 - TYPE_FIND_REGISTER (plugin, "video/mpeg-stream", GST_RANK_MARGINAL,
1.2658 - mpeg_video_stream_type_find, mpeg_video_exts, MPEG_VIDEO_CAPS, NULL,
1.2659 - NULL);
1.2660 - TYPE_FIND_REGISTER (plugin, "video/mpeg4", GST_RANK_PRIMARY,
1.2661 - mpeg4_video_type_find, m4v_exts, MPEG_VIDEO_CAPS, NULL, NULL);
1.2662 - TYPE_FIND_REGISTER (plugin, "video/x-nuv", GST_RANK_SECONDARY,
1.2663 - nuv_type_find, nuv_exts, NUV_CAPS, NULL, NULL);
1.2664 -
1.2665 - /* ISO formats */
1.2666 - TYPE_FIND_REGISTER (plugin, "audio/x-m4a", GST_RANK_PRIMARY, m4a_type_find,
1.2667 - m4a_exts, M4A_CAPS, NULL, NULL);
1.2668 - TYPE_FIND_REGISTER (plugin, "application/x-3gp", GST_RANK_PRIMARY,
1.2669 - q3gp_type_find, q3gp_exts, Q3GP_CAPS, NULL, NULL);
1.2670 - TYPE_FIND_REGISTER (plugin, "video/quicktime", GST_RANK_SECONDARY,
1.2671 - qt_type_find, qt_exts, QT_CAPS, NULL, NULL);
1.2672 - TYPE_FIND_REGISTER (plugin, "image/x-quicktime", GST_RANK_SECONDARY,
1.2673 - qtif_type_find, qtif_exts, QTIF_CAPS, NULL, NULL);
1.2674 -
1.2675 - TYPE_FIND_REGISTER (plugin, "text/html", GST_RANK_SECONDARY, html_type_find,
1.2676 - html_exts, HTML_CAPS, NULL, NULL);
1.2677 - TYPE_FIND_REGISTER_START_WITH (plugin, "application/vnd.rn-realmedia",
1.2678 - GST_RANK_SECONDARY, rm_exts, ".RMF", 4, GST_TYPE_FIND_MAXIMUM);
1.2679 - TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-pn-realaudio",
1.2680 - GST_RANK_SECONDARY, rm_exts, ".ra\375", 4, GST_TYPE_FIND_MAXIMUM);
1.2681 - TYPE_FIND_REGISTER (plugin, "application/x-shockwave-flash",
1.2682 - GST_RANK_SECONDARY, swf_type_find, swf_exts, SWF_CAPS, NULL, NULL);
1.2683 - TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-flv", GST_RANK_SECONDARY,
1.2684 - flv_exts, "FLV", 3, GST_TYPE_FIND_MAXIMUM);
1.2685 - TYPE_FIND_REGISTER (plugin, "text/plain", GST_RANK_MARGINAL, utf8_type_find,
1.2686 - utf8_exts, UTF8_CAPS, NULL, NULL);
1.2687 - TYPE_FIND_REGISTER (plugin, "text/uri-list", GST_RANK_MARGINAL, uri_type_find,
1.2688 - uri_exts, URI_CAPS, NULL, NULL);
1.2689 - TYPE_FIND_REGISTER (plugin, "application/smil", GST_RANK_SECONDARY,
1.2690 - smil_type_find, smil_exts, SMIL_CAPS, NULL, NULL);
1.2691 - TYPE_FIND_REGISTER (plugin, "application/xml", GST_RANK_MARGINAL,
1.2692 - xml_type_find, xml_exts, GENERIC_XML_CAPS, NULL, NULL);
1.2693 - TYPE_FIND_REGISTER_RIFF (plugin, "audio/x-wav", GST_RANK_PRIMARY, wav_exts,
1.2694 - "WAVE");
1.2695 - TYPE_FIND_REGISTER (plugin, "audio/x-aiff", GST_RANK_SECONDARY,
1.2696 - aiff_type_find, aiff_exts, AIFF_CAPS, NULL, NULL);
1.2697 - TYPE_FIND_REGISTER (plugin, "audio/x-svx", GST_RANK_SECONDARY, svx_type_find,
1.2698 - svx_exts, SVX_CAPS, NULL, NULL);
1.2699 - TYPE_FIND_REGISTER (plugin, "audio/x-paris", GST_RANK_SECONDARY,
1.2700 - paris_type_find, paris_exts, PARIS_CAPS, NULL, NULL);
1.2701 - TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-nist", GST_RANK_SECONDARY,
1.2702 - nist_exts, "NIST", 4, GST_TYPE_FIND_MAXIMUM);
1.2703 - TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-voc", GST_RANK_SECONDARY,
1.2704 - voc_exts, "Creative", 8, GST_TYPE_FIND_MAXIMUM);
1.2705 - TYPE_FIND_REGISTER (plugin, "audio/x-sds", GST_RANK_SECONDARY, sds_type_find,
1.2706 - sds_exts, SDS_CAPS, NULL, NULL);
1.2707 - TYPE_FIND_REGISTER (plugin, "audio/x-ircam", GST_RANK_SECONDARY,
1.2708 - ircam_type_find, ircam_exts, IRCAM_CAPS, NULL, NULL);
1.2709 - TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-w64", GST_RANK_SECONDARY,
1.2710 - w64_exts, "riff", 4, GST_TYPE_FIND_MAXIMUM);
1.2711 - TYPE_FIND_REGISTER (plugin, "audio/x-shorten", GST_RANK_SECONDARY,
1.2712 - shn_type_find, shn_exts, SHN_CAPS, NULL, NULL);
1.2713 - TYPE_FIND_REGISTER (plugin, "application/x-ape", GST_RANK_SECONDARY,
1.2714 - ape_type_find, ape_exts, APE_CAPS, NULL, NULL);
1.2715 - TYPE_FIND_REGISTER (plugin, "image/jpeg", GST_RANK_PRIMARY, jpeg_type_find,
1.2716 - jpeg_exts, JPEG_CAPS, NULL, NULL);
1.2717 - TYPE_FIND_REGISTER_START_WITH (plugin, "image/gif", GST_RANK_PRIMARY,
1.2718 - gif_exts, "GIF8", 4, GST_TYPE_FIND_MAXIMUM);
1.2719 - TYPE_FIND_REGISTER_START_WITH (plugin, "image/png", GST_RANK_PRIMARY,
1.2720 - png_exts, "\211PNG\015\012\032\012", 8, GST_TYPE_FIND_MAXIMUM);
1.2721 - TYPE_FIND_REGISTER (plugin, "image/bmp", GST_RANK_PRIMARY, bmp_type_find,
1.2722 - bmp_exts, BMP_CAPS, NULL, NULL);
1.2723 - TYPE_FIND_REGISTER (plugin, "image/tiff", GST_RANK_PRIMARY, tiff_type_find,
1.2724 - tiff_exts, TIFF_CAPS, NULL, NULL);
1.2725 - TYPE_FIND_REGISTER (plugin, "video/x-matroska", GST_RANK_PRIMARY,
1.2726 - matroska_type_find, matroska_exts, MATROSKA_CAPS, NULL, NULL);
1.2727 - TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-mve", GST_RANK_SECONDARY,
1.2728 - mve_exts, "Interplay MVE File\032\000\032\000\000\001\063\021", 26,
1.2729 - GST_TYPE_FIND_MAXIMUM);
1.2730 - TYPE_FIND_REGISTER (plugin, "video/x-dv", GST_RANK_SECONDARY, dv_type_find,
1.2731 - dv_exts, DV_CAPS, NULL, NULL);
1.2732 - TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-amr-nb-sh", GST_RANK_PRIMARY,
1.2733 - amr_exts, "#!AMR", 5, GST_TYPE_FIND_LIKELY);
1.2734 - TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-amr-wb-sh", GST_RANK_PRIMARY,
1.2735 - amr_exts, "#!AMR-WB", 7, GST_TYPE_FIND_MAXIMUM);
1.2736 - TYPE_FIND_REGISTER (plugin, "audio/iLBC-sh", GST_RANK_PRIMARY,
1.2737 - ilbc_type_find, ilbc_exts, ILBC_CAPS, NULL, NULL);
1.2738 - TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-sid", GST_RANK_MARGINAL,
1.2739 - sid_exts, "PSID", 4, GST_TYPE_FIND_MAXIMUM);
1.2740 - TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-xcf", GST_RANK_SECONDARY,
1.2741 - xcf_exts, "gimp xcf", 8, GST_TYPE_FIND_MAXIMUM);
1.2742 - TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-mng", GST_RANK_SECONDARY,
1.2743 - mng_exts, "\212MNG\015\012\032\012", 8, GST_TYPE_FIND_MAXIMUM);
1.2744 - TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-jng", GST_RANK_SECONDARY,
1.2745 - jng_exts, "\213JNG\015\012\032\012", 8, GST_TYPE_FIND_MAXIMUM);
1.2746 - TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-xpixmap", GST_RANK_SECONDARY,
1.2747 - xpm_exts, "/* XPM */", 9, GST_TYPE_FIND_MAXIMUM);
1.2748 - TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-sun-raster",
1.2749 - GST_RANK_SECONDARY, ras_exts, "\131\246\152\225", 4,
1.2750 - GST_TYPE_FIND_MAXIMUM);
1.2751 - TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-bzip",
1.2752 - GST_RANK_SECONDARY, bz2_exts, "BZh", 3, GST_TYPE_FIND_LIKELY);
1.2753 - TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-gzip",
1.2754 - GST_RANK_SECONDARY, gz_exts, "\037\213", 2, GST_TYPE_FIND_LIKELY);
1.2755 - TYPE_FIND_REGISTER_START_WITH (plugin, "application/zip", GST_RANK_SECONDARY,
1.2756 - zip_exts, "PK\003\004", 4, GST_TYPE_FIND_LIKELY);
1.2757 - TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-compress",
1.2758 - GST_RANK_SECONDARY, compress_exts, "\037\235", 2, GST_TYPE_FIND_LIKELY);
1.2759 - TYPE_FIND_REGISTER (plugin, "audio/x-vorbis", GST_RANK_PRIMARY,
1.2760 - vorbis_type_find, NULL, VORBIS_CAPS, NULL, NULL);
1.2761 - TYPE_FIND_REGISTER (plugin, "video/x-theora", GST_RANK_PRIMARY,
1.2762 - theora_type_find, NULL, THEORA_CAPS, NULL, NULL);
1.2763 - TYPE_FIND_REGISTER (plugin, "application/x-ogm-video", GST_RANK_PRIMARY,
1.2764 - ogmvideo_type_find, NULL, OGMVIDEO_CAPS, NULL, NULL);
1.2765 - TYPE_FIND_REGISTER (plugin, "application/x-ogm-audio", GST_RANK_PRIMARY,
1.2766 - ogmaudio_type_find, NULL, OGMAUDIO_CAPS, NULL, NULL);
1.2767 - TYPE_FIND_REGISTER (plugin, "application/x-ogm-text", GST_RANK_PRIMARY,
1.2768 - ogmtext_type_find, NULL, OGMTEXT_CAPS, NULL, NULL);
1.2769 - TYPE_FIND_REGISTER (plugin, "audio/x-speex", GST_RANK_PRIMARY,
1.2770 - speex_type_find, NULL, SPEEX_CAPS, NULL, NULL);
1.2771 - TYPE_FIND_REGISTER (plugin, "application/x-ogg-skeleton", GST_RANK_PRIMARY,
1.2772 - oggskel_type_find, NULL, OGG_SKELETON_CAPS, NULL, NULL);
1.2773 - TYPE_FIND_REGISTER (plugin, "text/x-cmml", GST_RANK_PRIMARY, cmml_type_find,
1.2774 - NULL, CMML_CAPS, NULL, NULL);
1.2775 - TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-executable",
1.2776 - GST_RANK_MARGINAL, NULL, "\177ELF", 4, GST_TYPE_FIND_MAXIMUM);
1.2777 - TYPE_FIND_REGISTER (plugin, "adts_mpeg_stream", GST_RANK_SECONDARY,
1.2778 - aac_type_find, aac_exts, AAC_CAPS, NULL, NULL);
1.2779 - TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-spc", GST_RANK_SECONDARY,
1.2780 - spc_exts, "SNES-SPC700 Sound File Data", 27, GST_TYPE_FIND_MAXIMUM);
1.2781 - TYPE_FIND_REGISTER (plugin, "audio/x-wavpack", GST_RANK_SECONDARY,
1.2782 - wavpack_type_find, wavpack_exts, WAVPACK_CAPS, NULL, NULL);
1.2783 - TYPE_FIND_REGISTER (plugin, "audio/x-wavpack-correction", GST_RANK_SECONDARY,
1.2784 - wavpack_type_find, wavpack_correction_exts, WAVPACK_CORRECTION_CAPS, NULL,
1.2785 - NULL);
1.2786 - TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-rar",
1.2787 - GST_RANK_SECONDARY, rar_exts, "Rar!", 4, GST_TYPE_FIND_LIKELY);
1.2788 - TYPE_FIND_REGISTER (plugin, "application/x-tar", GST_RANK_SECONDARY,
1.2789 - tar_type_find, tar_exts, TAR_CAPS, NULL, NULL);
1.2790 - TYPE_FIND_REGISTER (plugin, "application/x-ar", GST_RANK_SECONDARY,
1.2791 - ar_type_find, ar_exts, AR_CAPS, NULL, NULL);
1.2792 - TYPE_FIND_REGISTER (plugin, "application/x-ms-dos-executable",
1.2793 - GST_RANK_SECONDARY, msdos_type_find, msdos_exts, MSDOS_CAPS, NULL, NULL);
1.2794 -#if 0
1.2795 - TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-dirac",
1.2796 - GST_RANK_PRIMARY, NULL, "BBCD", 4, GST_TYPE_FIND_MAXIMUM);
1.2797 -#endif
1.2798 - TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-dirac",
1.2799 - GST_RANK_PRIMARY, NULL, "KW-DIRAC", 8, GST_TYPE_FIND_MAXIMUM);
1.2800 - TYPE_FIND_REGISTER (plugin, "multipart/x-mixed-replace", GST_RANK_SECONDARY,
1.2801 - multipart_type_find, NULL, MULTIPART_CAPS, NULL, NULL);
1.2802 - TYPE_FIND_REGISTER (plugin, "application/x-mmsh", GST_RANK_SECONDARY,
1.2803 - mmsh_type_find, NULL, MMSH_CAPS, NULL, NULL);
1.2804 - return TRUE;
1.2805 -}
1.2806 -
1.2807 -GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1.2808 - GST_VERSION_MINOR,
1.2809 - "typefindfunctions",
1.2810 - "default typefind functions",
1.2811 - plugin_init, VERSION, "LGPL", "GStreamer Base Plug-ins CVS/prerelease", "Gstreamer CVS")