1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gst-plugins-nuvdemux/typefind/gsttypefindfunctions.c Mon Jan 29 23:43:26 2007 +0000
1.3 @@ -0,0 +1,2808 @@
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")