2 * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
3 * Copyright (C) 2005-2009 Tim-Philipp Müller <tim centricular net>
4 * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
6 * gsttypefindfunctions.c: collection of various typefind functions
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
29 #include <glib/gprintf.h>
31 /* don't want to add gio xdgmime typefinder if gio was disabled via configure */
43 #include <gst/pbutils/pbutils.h>
45 GST_DEBUG_CATEGORY_STATIC (type_find_debug);
46 #define GST_CAT_DEFAULT type_find_debug
48 /* so our code stays ready for 0.11 */
49 #define gst_type_find_peek(tf,off,len) \
50 ((const guint8 *)gst_type_find_peek((tf),(off),(len)))
52 /* DataScanCtx: helper for typefind functions that scan through data
53 * step-by-step, to avoid doing a peek at each and every offset */
55 #define DATA_SCAN_CTX_CHUNK_SIZE 4096
65 data_scan_ctx_advance (GstTypeFind * tf, DataScanCtx * c, guint bytes_to_skip)
67 c->offset += bytes_to_skip;
68 if (G_LIKELY (c->size > bytes_to_skip)) {
69 c->size -= bytes_to_skip;
70 c->data += bytes_to_skip;
77 static inline gboolean
78 data_scan_ctx_ensure_data (GstTypeFind * tf, DataScanCtx * c, gint min_len)
82 guint chunk_len = MAX (DATA_SCAN_CTX_CHUNK_SIZE, min_len);
84 if (G_LIKELY (c->size >= min_len))
87 data = gst_type_find_peek (tf, c->offset, chunk_len);
88 if (G_LIKELY (data != NULL)) {
94 /* if there's less than our chunk size, try to get as much as we can, but
95 * always at least min_len bytes (we might be typefinding the first buffer
96 * of the stream and not have as much data available as we'd like) */
97 len = gst_type_find_get_length (tf);
99 len = CLAMP (len - c->offset, min_len, chunk_len);
104 data = gst_type_find_peek (tf, c->offset, len);
114 static inline gboolean
115 data_scan_ctx_memcmp (GstTypeFind * tf, DataScanCtx * c, guint offset,
116 const gchar * data, guint len)
118 if (!data_scan_ctx_ensure_data (tf, c, offset + len))
121 return (memcmp (c->data + offset, data, len) == 0);
125 static gboolean xml_check_first_element (GstTypeFind * tf,
126 const gchar * element, guint elen, gboolean strict);
127 static gboolean sdp_check_header (GstTypeFind * tf);
129 static GstStaticCaps utf8_caps = GST_STATIC_CAPS ("text/plain");
131 #define UTF8_CAPS gst_static_caps_get(&utf8_caps)
134 utf8_type_find_have_valid_utf8_at_offset (GstTypeFind * tf, guint64 offset,
135 GstTypeFindProbability * prob)
139 /* randomly decided values */
140 guint min_size = 16; /* minimum size */
141 guint size = 32 * 1024; /* starting size */
142 guint probability = 95; /* starting probability */
143 guint step = 10; /* how much we reduce probability in each
146 while (probability > step && size > min_size) {
147 data = gst_type_find_peek (tf, offset, size);
150 gchar *start = (gchar *) data;
152 if (g_utf8_validate (start, size, (const gchar **) &end) || (end - start + 4 > size)) { /* allow last char to be cut off */
167 utf8_type_find (GstTypeFind * tf, gpointer unused)
169 GstTypeFindProbability start_prob, mid_prob;
172 /* leave xml to the xml typefinders */
173 if (xml_check_first_element (tf, "", 0, TRUE))
176 /* leave sdp to the sdp typefinders */
177 if (sdp_check_header (tf))
180 /* check beginning of stream */
181 if (!utf8_type_find_have_valid_utf8_at_offset (tf, 0, &start_prob))
184 GST_LOG ("start is plain text with probability of %u", start_prob);
186 /* POSSIBLE is the highest probability we ever return if we can't
187 * probe into the middle of the file and don't know its length */
189 length = gst_type_find_get_length (tf);
190 if (length == 0 || length == (guint64) - 1) {
191 gst_type_find_suggest (tf, MIN (start_prob, GST_TYPE_FIND_POSSIBLE),
196 if (length < 64 * 1024) {
197 gst_type_find_suggest (tf, start_prob, UTF8_CAPS);
201 /* check middle of stream */
202 if (!utf8_type_find_have_valid_utf8_at_offset (tf, length / 2, &mid_prob))
205 GST_LOG ("middle is plain text with probability of %u", mid_prob);
206 gst_type_find_suggest (tf, (start_prob + mid_prob) / 2, UTF8_CAPS);
209 /*** text/uri-list ***/
211 static GstStaticCaps uri_caps = GST_STATIC_CAPS ("text/uri-list");
213 #define URI_CAPS (gst_static_caps_get(&uri_caps))
214 #define BUFFER_SIZE 16 /* If the string is < 16 bytes we're screwed */
215 #define INC_BUFFER { \
217 if (pos == BUFFER_SIZE) { \
219 offset += BUFFER_SIZE; \
220 data = gst_type_find_peek (tf, offset, BUFFER_SIZE); \
221 if (data == NULL) return; \
227 uri_type_find (GstTypeFind * tf, gpointer unused)
229 const guint8 *data = gst_type_find_peek (tf, 0, BUFFER_SIZE);
234 /* Search for # comment lines */
235 while (*data == '#') {
236 /* Goto end of line */
237 while (*data != '\n') {
244 if (!g_ascii_isalpha (*data)) {
245 /* Had a non alpha char - can't be uri-list */
251 while (g_ascii_isalnum (*data)) {
256 /* First non alpha char is not a : */
260 /* Get the next 2 bytes as well */
261 data = gst_type_find_peek (tf, offset + pos, 3);
265 if (data[1] != '/' && data[2] != '/') {
269 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, URI_CAPS);
273 /*** application/x-hls ***/
275 static GstStaticCaps hls_caps = GST_STATIC_CAPS ("application/x-hls");
276 #define HLS_CAPS (gst_static_caps_get(&hls_caps))
278 /* See http://tools.ietf.org/html/draft-pantos-http-live-streaming-05 */
280 hls_type_find (GstTypeFind * tf, gpointer unused)
282 DataScanCtx c = { 0, NULL, 0 };
284 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 7)))
287 if (memcmp (c.data, "#EXTM3U", 7))
290 data_scan_ctx_advance (tf, &c, 7);
292 /* Check only the first 256 bytes */
293 while (c.offset < 256) {
294 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 21)))
297 /* Search for # comment lines */
298 if (c.data[0] == '#' && (memcmp (c.data, "#EXT-X-TARGETDURATION", 21) == 0
299 || memcmp (c.data, "#EXT-X-STREAM-INF", 17) == 0)) {
300 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HLS_CAPS);
304 data_scan_ctx_advance (tf, &c, 1);
309 /*** application/xml **********************************************************/
311 #define XML_BUFFER_SIZE 16
312 #define XML_INC_BUFFER { \
314 if (pos == XML_BUFFER_SIZE) { \
316 offset += XML_BUFFER_SIZE; \
317 data = gst_type_find_peek (tf, offset, XML_BUFFER_SIZE); \
318 if (data == NULL) return FALSE; \
325 xml_check_first_element (GstTypeFind * tf, const gchar * element, guint elen,
333 data = gst_type_find_peek (tf, 0, XML_BUFFER_SIZE);
337 /* look for the XMLDec
338 * see XML spec 2.8, Prolog and Document Type Declaration
339 * http://www.w3.org/TR/2004/REC-xml-20040204/#sec-prolog-dtd */
340 got_xmldec = (memcmp (data, "<?xml", 5) == 0);
342 if (strict && !got_xmldec)
345 /* skip XMLDec in any case if we've got one */
351 /* look for the first element, it has to be the requested element. Bail
352 * out if it is not within the first 4kB. */
353 while (data && (offset + pos) < 4096) {
354 while (*data != '<' && (offset + pos) < 4096) {
359 if (!g_ascii_isalpha (*data)) {
360 /* if not alphabetic, it's a PI or an element / attribute declaration
361 * like <?xxx or <!xxx */
366 /* the first normal element, check if it's the one asked for */
367 data = gst_type_find_peek (tf, offset + pos, elen + 1);
368 return (data && element && strncmp ((char *) data, element, elen) == 0);
374 static GstStaticCaps generic_xml_caps = GST_STATIC_CAPS ("application/xml");
376 #define GENERIC_XML_CAPS (gst_static_caps_get(&generic_xml_caps))
378 xml_type_find (GstTypeFind * tf, gpointer unused)
380 if (xml_check_first_element (tf, "", 0, TRUE)) {
381 gst_type_find_suggest (tf, GST_TYPE_FIND_MINIMUM, GENERIC_XML_CAPS);
385 /*** application/sdp *********************************************************/
387 static GstStaticCaps sdp_caps = GST_STATIC_CAPS ("application/sdp");
389 #define SDP_CAPS (gst_static_caps_get(&sdp_caps))
391 sdp_check_header (GstTypeFind * tf)
395 data = gst_type_find_peek (tf, 0, 5);
399 /* sdp must start with v=0[\r]\n */
400 if (memcmp (data, "v=0", 3))
403 if (data[3] == '\r' && data[4] == '\n')
412 sdp_type_find (GstTypeFind * tf, gpointer unused)
414 if (sdp_check_header (tf))
415 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SDP_CAPS);
418 /*** application/smil *********************************************************/
420 static GstStaticCaps smil_caps = GST_STATIC_CAPS ("application/smil");
422 #define SMIL_CAPS (gst_static_caps_get(&smil_caps))
424 smil_type_find (GstTypeFind * tf, gpointer unused)
426 if (xml_check_first_element (tf, "smil", 4, FALSE)) {
427 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SMIL_CAPS);
433 static GstStaticCaps html_caps = GST_STATIC_CAPS ("text/html");
435 #define HTML_CAPS gst_static_caps_get (&html_caps)
438 html_type_find (GstTypeFind * tf, gpointer unused)
440 const gchar *d, *data;
442 data = (const gchar *) gst_type_find_peek (tf, 0, 16);
446 if (!g_ascii_strncasecmp (data, "<!DOCTYPE HTML", 14)) {
447 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HTML_CAPS);
448 } else if (xml_check_first_element (tf, "html", 4, FALSE)) {
449 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HTML_CAPS);
450 } else if ((d = memchr (data, '<', 16))) {
451 data = (const gchar *) gst_type_find_peek (tf, d - data, 6);
452 if (data && g_ascii_strncasecmp (data, "<html>", 6) == 0) {
453 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HTML_CAPS);
460 static GstStaticCaps mid_caps = GST_STATIC_CAPS ("audio/midi");
462 #define MID_CAPS gst_static_caps_get(&mid_caps)
464 mid_type_find (GstTypeFind * tf, gpointer unused)
466 const guint8 *data = gst_type_find_peek (tf, 0, 4);
468 /* http://jedi.ks.uiuc.edu/~johns/links/music/midifile.html */
469 if (data && data[0] == 'M' && data[1] == 'T' && data[2] == 'h'
471 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MID_CAPS);
474 /*** audio/mobile-xmf ***/
476 static GstStaticCaps mxmf_caps = GST_STATIC_CAPS ("audio/mobile-xmf");
478 #define MXMF_CAPS gst_static_caps_get(&mxmf_caps)
480 mxmf_type_find (GstTypeFind * tf, gpointer unused)
482 const guint8 *data = NULL;
484 /* Search FileId "XMF_" 4 bytes */
485 data = gst_type_find_peek (tf, 0, 4);
486 if (data && data[0] == 'X' && data[1] == 'M' && data[2] == 'F'
488 /* Search Format version "2.00" 4 bytes */
489 data = gst_type_find_peek (tf, 4, 4);
490 if (data && data[0] == '2' && data[1] == '.' && data[2] == '0'
492 /* Search TypeId 2 1 byte */
493 data = gst_type_find_peek (tf, 11, 1);
494 if (data && data[0] == 2) {
495 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MXMF_CAPS);
502 /*** video/x-fli ***/
504 static GstStaticCaps flx_caps = GST_STATIC_CAPS ("video/x-fli");
506 #define FLX_CAPS gst_static_caps_get(&flx_caps)
508 flx_type_find (GstTypeFind * tf, gpointer unused)
510 const guint8 *data = gst_type_find_peek (tf, 0, 134);
513 /* check magic and the frame type of the first frame */
514 if ((data[4] == 0x11 || data[4] == 0x12 ||
515 data[4] == 0x30 || data[4] == 0x44) &&
517 ((data[132] == 0x00 || data[132] == 0xfa) && data[133] == 0xf1)) {
518 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, FLX_CAPS);
522 data = gst_type_find_peek (tf, 0, 6);
524 /* check magic only */
525 if ((data[4] == 0x11 || data[4] == 0x12 ||
526 data[4] == 0x30 || data[4] == 0x44) && data[5] == 0xaf) {
527 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, FLX_CAPS);
533 /*** application/x-id3 ***/
535 static GstStaticCaps id3_caps = GST_STATIC_CAPS ("application/x-id3");
537 #define ID3_CAPS gst_static_caps_get(&id3_caps)
539 id3v2_type_find (GstTypeFind * tf, gpointer unused)
541 const guint8 *data = gst_type_find_peek (tf, 0, 10);
543 if (data && memcmp (data, "ID3", 3) == 0 &&
544 data[3] != 0xFF && data[4] != 0xFF &&
545 (data[6] & 0x80) == 0 && (data[7] & 0x80) == 0 &&
546 (data[8] & 0x80) == 0 && (data[9] & 0x80) == 0) {
547 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, ID3_CAPS);
552 id3v1_type_find (GstTypeFind * tf, gpointer unused)
554 const guint8 *data = gst_type_find_peek (tf, -128, 3);
556 if (data && memcmp (data, "TAG", 3) == 0) {
557 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, ID3_CAPS);
561 /*** application/x-ape ***/
563 static GstStaticCaps apetag_caps = GST_STATIC_CAPS ("application/x-apetag");
565 #define APETAG_CAPS gst_static_caps_get(&apetag_caps)
567 apetag_type_find (GstTypeFind * tf, gpointer unused)
571 /* APEv1/2 at start of file */
572 data = gst_type_find_peek (tf, 0, 8);
573 if (data && !memcmp (data, "APETAGEX", 8)) {
574 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, APETAG_CAPS);
578 /* APEv1/2 at end of file */
579 data = gst_type_find_peek (tf, -32, 8);
580 if (data && !memcmp (data, "APETAGEX", 8)) {
581 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, APETAG_CAPS);
586 /*** audio/x-ttafile ***/
588 static GstStaticCaps tta_caps = GST_STATIC_CAPS ("audio/x-ttafile");
590 #define TTA_CAPS gst_static_caps_get(&tta_caps)
592 tta_type_find (GstTypeFind * tf, gpointer unused)
594 const guint8 *data = gst_type_find_peek (tf, 0, 3);
597 if (memcmp (data, "TTA", 3) == 0) {
598 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, TTA_CAPS);
604 /*** audio/x-flac ***/
605 static GstStaticCaps flac_caps = GST_STATIC_CAPS ("audio/x-flac");
607 #define FLAC_CAPS (gst_static_caps_get(&flac_caps))
610 flac_type_find (GstTypeFind * tf, gpointer unused)
612 DataScanCtx c = { 0, NULL, 0 };
614 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 4)))
617 /* standard flac (also old/broken flac-in-ogg with an initial 4-byte marker
618 * packet and without the usual packet framing) */
619 if (memcmp (c.data, "fLaC", 4) == 0) {
620 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, FLAC_CAPS);
624 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 6)))
627 /* flac-in-ogg, see http://flac.sourceforge.net/ogg_mapping.html */
628 if (memcmp (c.data, "\177FLAC\001", 6) == 0) {
629 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, FLAC_CAPS);
633 /* disabled because it happily typefinds /dev/urandom as audio/x-flac, and
634 * because I yet have to see header-less flac in the wild */
636 /* flac without headers (subset format) */
637 /* 64K should be enough */
638 while (c.offset < (64 * 1024)) {
639 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 4)))
642 /* look for frame header,
643 * http://flac.sourceforge.net/format.html#frame_header
645 if (c.data[0] == 0xff && (c.data[1] >> 2) == 0x3e) {
646 /* bit 15 in the header must be 0 */
647 if (((c.data[1] >> 1) & 0x01) == 0x01)
650 /* blocksize must be != 0x00 */
651 if ((c.data[2] >> 4) == 0x00)
654 /* samplerate must be != 0x0f */
655 if ((c.data[2] & 0x0f) == 0x0f)
657 /* also 0 is invalid, as it means get the info from the header and we
658 * don't have headers if we are here */
659 if ((c.data[2] & 0x0f) == 0x00)
662 /* channel assignment must be < 11 */
663 if ((c.data[3] >> 4) >= 11)
666 /* sample size must be != 0x07 and != 0x05 */
667 if (((c.data[3] >> 1) & 0x07) == 0x07)
669 if (((c.data[3] >> 1) & 0x07) == 0x05)
671 /* also 0 is invalid, as it means get the info from the header and we
672 * don't have headers if we are here */
673 if (((c.data[3] >> 1) & 0x07) == 0x00)
676 /* next bit must be 0 */
677 if ((c.data[3] & 0x01) == 0x01)
680 /* FIXME: shouldn't we include the crc check ? */
682 GST_DEBUG ("Found flac without headers at %d", (gint) c.offset);
683 gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, FLAC_CAPS);
687 data_scan_ctx_advance (tf, &c, 1);
692 /*** audio/mpeg version 2, 4 ***/
694 static GstStaticCaps aac_caps = GST_STATIC_CAPS ("audio/mpeg, "
695 "mpegversion = (int) { 2, 4 }, framed = (bool) false");
696 #define AAC_CAPS (gst_static_caps_get(&aac_caps))
697 #define AAC_AMOUNT (4096)
699 aac_type_find (GstTypeFind * tf, gpointer unused)
701 /* LUT to convert the AudioObjectType from the ADTS header to a string */
702 DataScanCtx c = { 0, NULL, 0 };
704 while (c.offset < AAC_AMOUNT) {
707 /* detect adts header or adif header.
708 * The ADIF header is 4 bytes, that should be OK. The ADTS header, on
709 * the other hand, is 14 bits only, so we require one valid frame with
710 * again a valid syncpoint on the next one (28 bits) for certainty. We
711 * require 4 kB, which is quite a lot, since frames are generally 200-400
713 * LOAS has 2 possible syncwords, which are 11 bits and 16 bits long.
714 * The following stream syntax depends on which one is found.
716 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 6)))
719 snc = GST_READ_UINT16_BE (c.data);
720 if (G_UNLIKELY ((snc & 0xfff6) == 0xfff0)) {
721 /* ADTS header - find frame length */
722 GST_DEBUG ("Found one ADTS syncpoint at offset 0x%" G_GINT64_MODIFIER
723 "x, tracing next...", c.offset);
724 len = ((c.data[3] & 0x03) << 11) |
725 (c.data[4] << 3) | ((c.data[5] & 0xe0) >> 5);
727 if (len == 0 || !data_scan_ctx_ensure_data (tf, &c, len + 2)) {
728 GST_DEBUG ("Wrong sync or next frame not within reach, len=%u", len);
732 /* check if there's a second ADTS frame */
733 snc = GST_READ_UINT16_BE (c.data + len);
734 if ((snc & 0xfff6) == 0xfff0) {
736 guint mpegversion, sample_freq_idx, channel_config, profile_idx, rate;
737 guint8 audio_config[2];
739 mpegversion = (c.data[1] & 0x08) ? 2 : 4;
740 profile_idx = c.data[2] >> 6;
741 sample_freq_idx = ((c.data[2] & 0x3c) >> 2);
742 channel_config = ((c.data[2] & 0x01) << 2) + (c.data[3] >> 6);
744 GST_DEBUG ("Found second ADTS-%d syncpoint at offset 0x%"
745 G_GINT64_MODIFIER "x, framelen %u", mpegversion, c.offset, len);
747 /* 0xd and 0xe are reserved. 0xf means the sample frequency is directly
748 * specified in the header, but that's not allowed for ADTS */
749 if (sample_freq_idx > 0xc) {
750 GST_DEBUG ("Unexpected sample frequency index %d or wrong sync",
755 rate = gst_codec_utils_aac_get_sample_rate_from_index (sample_freq_idx);
756 GST_LOG ("ADTS: profile=%u, rate=%u", profile_idx, rate);
758 /* The ADTS frame header is slightly different from the
759 * AudioSpecificConfig defined for the MPEG-4 container, so we just
760 * construct enough of it for getting the level here. */
761 /* ADTS counts profiles from 0 instead of 1 to save bits */
762 audio_config[0] = (profile_idx + 1) << 3;
763 audio_config[0] |= (sample_freq_idx >> 1) & 0x7;
764 audio_config[1] = (sample_freq_idx & 0x1) << 7;
765 audio_config[1] |= (channel_config & 0xf) << 3;
767 caps = gst_caps_new_simple ("audio/mpeg",
768 "framed", G_TYPE_BOOLEAN, FALSE,
769 "mpegversion", G_TYPE_INT, mpegversion,
770 "stream-format", G_TYPE_STRING, "adts", NULL);
772 gst_codec_utils_aac_caps_set_level_and_profile (caps, audio_config, 2);
774 /* add rate and number of channels if we can */
775 if (channel_config != 0 && channel_config <= 7) {
776 const guint channels_map[] = { 0, 1, 2, 3, 4, 5, 6, 8 };
778 gst_caps_set_simple (caps, "channels", G_TYPE_INT,
779 channels_map[channel_config], "rate", G_TYPE_INT, rate, NULL);
782 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, caps);
783 gst_caps_unref (caps);
787 GST_DEBUG ("No next frame found... (should have been at 0x%x)", len);
788 } else if (G_UNLIKELY (((snc & 0xffe0) == 0x56e0) || (snc == 0x4de1))) {
791 GST_DEBUG ("Found one LOAS syncword at offset 0x%" G_GINT64_MODIFIER
792 "x, tracing next...", c.offset);
794 /* check length of frame for each type of detectable LOAS streams */
796 /* EPAudioSyncStream */
797 len = ((c.data[2] & 0x0f) << 9) | (c.data[3] << 1) |
798 ((c.data[4] & 0x80) >> 7);
799 /* add size of EP sync stream header */
802 /* AudioSyncStream */
803 len = ((c.data[1] & 0x1f) << 8) | c.data[2];
804 /* add size of sync stream header */
808 if (len == 0 || !data_scan_ctx_ensure_data (tf, &c, len + 2)) {
809 GST_DEBUG ("Wrong sync or next frame not within reach, len=%u", len);
813 /* check if there's a second LOAS frame */
814 snc = GST_READ_UINT16_BE (c.data + len);
815 if (((snc & 0xffe0) == 0x56e0) || (snc == 0x4de1)) {
816 GST_DEBUG ("Found second LOAS syncword at offset 0x%"
817 G_GINT64_MODIFIER "x, framelen %u", c.offset, len);
819 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_LIKELY, "audio/mpeg",
820 "framed", G_TYPE_BOOLEAN, FALSE,
821 "mpegversion", G_TYPE_INT, 4,
822 "stream-format", G_TYPE_STRING, "loas", NULL);
826 GST_DEBUG ("No next frame found... (should have been at 0x%x)", len);
827 } else if (!memcmp (c.data, "ADIF", 4)) {
829 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_LIKELY, "audio/mpeg",
830 "framed", G_TYPE_BOOLEAN, FALSE, "mpegversion", G_TYPE_INT, 4,
831 "stream-format", G_TYPE_STRING, "adif", NULL);
837 data_scan_ctx_advance (tf, &c, 1);
841 /*** audio/mpeg version 1 ***/
844 * The chance that random data is identified as a valid mp3 header is 63 / 2^18
845 * (0.024%) per try. This makes the function for calculating false positives
846 * 1 - (1 - ((63 / 2 ^18) ^ GST_MP3_TYPEFIND_MIN_HEADERS)) ^ buffersize)
847 * This has the following probabilities of false positives:
848 * datasize MIN_HEADERS
850 * 4096 62.6% 0.02% 0% 0%
851 * 16384 98% 0.09% 0% 0%
852 * 1 MiB 100% 5.88% 0% 0%
853 * 1 GiB 100% 100% 1.44% 0%
854 * 1 TiB 100% 100% 100% 0.35%
855 * This means that the current choice (3 headers by most of the time 4096 byte
856 * buffers is pretty safe for now.
858 * The max. size of each frame is 1440 bytes, which means that for N frames to
859 * be detected, we need 1440 * GST_MP3_TYPEFIND_MIN_HEADERS + 3 bytes of data.
860 * Assuming we step into the stream right after the frame header, this
861 * means we need 1440 * (GST_MP3_TYPEFIND_MIN_HEADERS + 1) - 1 + 3 bytes
862 * of data (5762) to always detect any mp3.
865 static const guint mp3types_bitrates[2][3][16] =
866 { {{0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448,},
867 {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384,},
868 {0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320,}},
869 {{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256,},
870 {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,},
871 {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,}},
874 static const guint mp3types_freqs[3][3] = { {11025, 12000, 8000},
875 {22050, 24000, 16000},
876 {44100, 48000, 32000}
880 mp3_type_frame_length_from_header (guint32 header, guint * put_layer,
881 guint * put_channels, guint * put_bitrate, guint * put_samplerate,
882 gboolean * may_be_free_format, gint possible_free_framelen)
884 guint bitrate, layer, length, mode, samplerate, version, channels;
886 if ((header & 0xffe00000) != 0xffe00000)
889 /* we don't need extension, copyright, original or
890 * emphasis for the frame length */
898 length = header & 0x1;
901 /* sampling frequency */
902 samplerate = header & 0x3;
908 bitrate = header & 0xF;
909 if (bitrate == 0 && possible_free_framelen == -1) {
910 GST_LOG ("Possibly a free format mp3 - signalling");
911 *may_be_free_format = TRUE;
913 if (bitrate == 15 || (bitrate == 0 && possible_free_framelen == -1))
916 /* ignore error correction, too */
920 layer = 4 - (header & 0x3);
925 /* version 0=MPEG2.5; 2=MPEG2; 3=MPEG1 */
926 version = header & 0x3;
931 channels = (mode == 3) ? 1 : 2;
932 samplerate = mp3types_freqs[version > 0 ? version - 1 : 0][samplerate];
936 length += possible_free_framelen;
937 bitrate = length * samplerate / 48000;
939 length += possible_free_framelen;
940 bitrate = length * samplerate /
941 ((layer == 3 && version != 3) ? 72000 : 144000);
945 bitrate = mp3types_bitrates[version == 3 ? 0 : 1][layer - 1][bitrate];
947 length = ((12000 * bitrate / samplerate) + length) * 4;
949 length += ((layer == 3
950 && version != 3) ? 72000 : 144000) * bitrate / samplerate;
954 GST_LOG ("mp3typefind: calculated mp3 frame length of %u bytes", length);
956 ("mp3typefind: samplerate = %u - bitrate = %u - layer = %u - version = %u"
957 " - channels = %u", samplerate, bitrate, layer, version, channels);
962 *put_channels = channels;
964 *put_bitrate = bitrate;
966 *put_samplerate = samplerate;
972 static GstStaticCaps mp3_caps = GST_STATIC_CAPS ("audio/mpeg, "
973 "mpegversion = (int) 1, layer = (int) [ 1, 3 ]");
974 #define MP3_CAPS (gst_static_caps_get(&mp3_caps))
976 * random values for typefinding
977 * if no more data is available, we will return a probability of
978 * (found_headers/TRY_HEADERS) * (MAXIMUM * (TRY_SYNC - bytes_skipped)
980 * if found_headers >= MIN_HEADERS
982 #define GST_MP3_TYPEFIND_MIN_HEADERS (2)
983 #define GST_MP3_TYPEFIND_TRY_HEADERS (5)
984 #define GST_MP3_TYPEFIND_TRY_SYNC (GST_TYPE_FIND_MAXIMUM * 100) /* 10kB */
985 #define GST_MP3_TYPEFIND_SYNC_SIZE (2048)
986 #define GST_MP3_WRONG_HEADER (10)
989 mp3_type_find_at_offset (GstTypeFind * tf, guint64 start_off,
990 guint * found_layer, GstTypeFindProbability * found_prob)
992 const guint8 *data = NULL;
993 const guint8 *data_end = NULL;
996 gint last_free_offset = -1;
997 gint last_free_framelen = -1;
998 gboolean headerstart = TRUE;
1005 while (skipped < GST_MP3_TYPEFIND_TRY_SYNC) {
1007 size = GST_MP3_TYPEFIND_SYNC_SIZE * 2;
1010 data = gst_type_find_peek (tf, skipped + start_off, size);
1011 } while (size > 10 && !data);
1014 data_end = data + size;
1016 if (*data == 0xFF) {
1017 const guint8 *head_data = NULL;
1018 guint layer = 0, bitrate, samplerate, channels;
1019 guint found = 0; /* number of valid headers found */
1020 guint64 offset = skipped;
1021 gboolean changed = FALSE;
1023 while (found < GST_MP3_TYPEFIND_TRY_HEADERS) {
1026 guint prev_layer = 0;
1027 guint prev_channels = 0, prev_samplerate = 0;
1028 gboolean free = FALSE;
1030 if ((gint64) (offset - skipped + 4) >= 0 &&
1031 data + offset - skipped + 4 < data_end) {
1032 head_data = data + offset - skipped;
1034 head_data = gst_type_find_peek (tf, offset + start_off, 4);
1038 head = GST_READ_UINT32_BE (head_data);
1039 if (!(length = mp3_type_frame_length_from_header (head, &layer,
1040 &channels, &bitrate, &samplerate, &free,
1041 last_free_framelen))) {
1043 if (last_free_offset == -1)
1044 last_free_offset = offset;
1046 last_free_framelen = offset - last_free_offset;
1047 offset = last_free_offset;
1051 last_free_framelen = -1;
1054 /* Mark the fact that we didn't find a valid header at the beginning */
1056 headerstart = FALSE;
1058 GST_LOG ("%d. header at offset %" G_GUINT64_FORMAT
1059 " (0x%" G_GINT64_MODIFIER "x) was not an mp3 header "
1060 "(possibly-free: %s)", found + 1, start_off + offset,
1061 start_off + offset, free ? "yes" : "no");
1064 if ((prev_layer && prev_layer != layer) ||
1065 /* (prev_bitrate && prev_bitrate != bitrate) || <-- VBR */
1066 (prev_samplerate && prev_samplerate != samplerate) ||
1067 (prev_channels && prev_channels != channels)) {
1068 /* this means an invalid property, or a change, which might mean
1069 * that this is not a mp3 but just a random bytestream. It could
1070 * be a freaking funky encoded mp3 though. We'll just not count
1075 prev_channels = channels;
1076 prev_samplerate = samplerate;
1079 GST_LOG ("found %d. header at offset %" G_GUINT64_FORMAT " (0x%"
1080 G_GINT64_MODIFIER "X)", found, start_off + offset,
1081 start_off + offset);
1085 g_assert (found <= GST_MP3_TYPEFIND_TRY_HEADERS);
1086 if (head_data == NULL &&
1087 gst_type_find_peek (tf, offset + start_off - 1, 1) == NULL)
1088 /* Incomplete last frame - don't count it. */
1090 if (found == GST_MP3_TYPEFIND_TRY_HEADERS ||
1091 (found >= GST_MP3_TYPEFIND_MIN_HEADERS && head_data == NULL)) {
1092 /* we can make a valid guess */
1093 guint probability = found * GST_TYPE_FIND_MAXIMUM *
1094 (GST_MP3_TYPEFIND_TRY_SYNC - skipped) /
1095 GST_MP3_TYPEFIND_TRY_HEADERS / GST_MP3_TYPEFIND_TRY_SYNC;
1098 && probability > (GST_TYPE_FIND_MINIMUM + GST_MP3_WRONG_HEADER))
1099 probability -= GST_MP3_WRONG_HEADER;
1100 if (probability < GST_TYPE_FIND_MINIMUM)
1101 probability = GST_TYPE_FIND_MINIMUM;
1105 probability = (probability + GST_TYPE_FIND_MAXIMUM) / 2;
1108 ("audio/mpeg calculated %u = %u * %u / %u * (%u - %"
1109 G_GUINT64_FORMAT ") / %u", probability, GST_TYPE_FIND_MAXIMUM,
1110 found, GST_MP3_TYPEFIND_TRY_HEADERS, GST_MP3_TYPEFIND_TRY_SYNC,
1111 (guint64) skipped, GST_MP3_TYPEFIND_TRY_SYNC);
1112 /* make sure we're not id3 tagged */
1113 head_data = gst_type_find_peek (tf, -128, 3);
1114 if (head_data && (memcmp (head_data, "TAG", 3) == 0)) {
1117 g_assert (probability <= GST_TYPE_FIND_MAXIMUM);
1119 *found_prob = probability;
1120 if (probability > 0)
1121 *found_layer = layer;
1132 mp3_type_find (GstTypeFind * tf, gpointer unused)
1134 GstTypeFindProbability prob, mid_prob;
1136 guint layer, mid_layer;
1139 mp3_type_find_at_offset (tf, 0, &layer, &prob);
1140 length = gst_type_find_get_length (tf);
1142 if (length == 0 || length == (guint64) - 1) {
1148 /* if we're pretty certain already, skip the additional check */
1149 if (prob >= GST_TYPE_FIND_LIKELY)
1152 mp3_type_find_at_offset (tf, length / 2, &mid_layer, &mid_prob);
1156 GST_LOG ("detected audio/mpeg only in the middle (p=%u)", mid_prob);
1162 if (layer != mid_layer) {
1163 GST_WARNING ("audio/mpeg layer discrepancy: %u vs. %u", layer, mid_layer);
1164 return; /* FIXME: or should we just go with the one in the middle? */
1167 /* detected mpeg audio both in middle of the file and at the start */
1168 prob = (prob + mid_prob) / 2;
1172 /* let's see if there's a valid header right at the start */
1173 data = gst_type_find_peek (tf, 0, 4); /* use min. frame size? */
1174 if (data && mp3_type_frame_length_from_header (GST_READ_UINT32_BE (data),
1175 &layer, NULL, NULL, NULL, NULL, 0) != 0) {
1177 prob = GST_TYPE_FIND_POSSIBLE - 10;
1179 prob = MAX (GST_TYPE_FIND_POSSIBLE - 10, prob + 10);
1189 g_return_if_fail (layer >= 1 && layer <= 3);
1191 gst_type_find_suggest_simple (tf, prob, "audio/mpeg",
1192 "mpegversion", G_TYPE_INT, 1, "layer", G_TYPE_INT, layer, NULL);
1196 /*** audio/x-musepack ***/
1198 static GstStaticCaps musepack_caps =
1199 GST_STATIC_CAPS ("audio/x-musepack, streamversion= (int) { 7, 8 }");
1201 #define MUSEPACK_CAPS (gst_static_caps_get(&musepack_caps))
1203 musepack_type_find (GstTypeFind * tf, gpointer unused)
1205 const guint8 *data = gst_type_find_peek (tf, 0, 4);
1206 GstTypeFindProbability prop = GST_TYPE_FIND_MINIMUM;
1207 gint streamversion = -1;
1209 if (data && memcmp (data, "MP+", 3) == 0) {
1211 if ((data[3] & 0x7f) == 7) {
1212 prop = GST_TYPE_FIND_MAXIMUM;
1214 prop = GST_TYPE_FIND_LIKELY + 10;
1216 } else if (data && memcmp (data, "MPCK", 4) == 0) {
1218 prop = GST_TYPE_FIND_MAXIMUM;
1221 if (streamversion != -1) {
1222 gst_type_find_suggest_simple (tf, prop, "audio/x-musepack",
1223 "streamversion", G_TYPE_INT, streamversion, NULL);
1227 /*** audio/x-ac3 ***/
1228 /* FIXME 0.11: should be audio/ac3, but isn't for backwards compatibility */
1229 static GstStaticCaps ac3_caps = GST_STATIC_CAPS ("audio/x-ac3");
1231 #define AC3_CAPS (gst_static_caps_get(&ac3_caps))
1233 static GstStaticCaps eac3_caps = GST_STATIC_CAPS ("audio/x-eac3");
1235 #define EAC3_CAPS (gst_static_caps_get(&eac3_caps))
1239 unsigned short bit_rate;
1240 unsigned short frm_size[3];
1243 static const struct ac3_frmsize ac3_frmsizecod_tbl[] = {
1246 {40, {80, 87, 120}},
1247 {40, {80, 88, 120}},
1248 {48, {96, 104, 144}},
1249 {48, {96, 105, 144}},
1250 {56, {112, 121, 168}},
1251 {56, {112, 122, 168}},
1252 {64, {128, 139, 192}},
1253 {64, {128, 140, 192}},
1254 {80, {160, 174, 240}},
1255 {80, {160, 175, 240}},
1256 {96, {192, 208, 288}},
1257 {96, {192, 209, 288}},
1258 {112, {224, 243, 336}},
1259 {112, {224, 244, 336}},
1260 {128, {256, 278, 384}},
1261 {128, {256, 279, 384}},
1262 {160, {320, 348, 480}},
1263 {160, {320, 349, 480}},
1264 {192, {384, 417, 576}},
1265 {192, {384, 418, 576}},
1266 {224, {448, 487, 672}},
1267 {224, {448, 488, 672}},
1268 {256, {512, 557, 768}},
1269 {256, {512, 558, 768}},
1270 {320, {640, 696, 960}},
1271 {320, {640, 697, 960}},
1272 {384, {768, 835, 1152}},
1273 {384, {768, 836, 1152}},
1274 {448, {896, 975, 1344}},
1275 {448, {896, 976, 1344}},
1276 {512, {1024, 1114, 1536}},
1277 {512, {1024, 1115, 1536}},
1278 {576, {1152, 1253, 1728}},
1279 {576, {1152, 1254, 1728}},
1280 {640, {1280, 1393, 1920}},
1281 {640, {1280, 1394, 1920}}
1285 ac3_type_find (GstTypeFind * tf, gpointer unused)
1287 DataScanCtx c = { 0, NULL, 0 };
1289 /* Search for an ac3 frame; not neccesarily right at the start, but give it
1290 * a lower probability if not found right at the start. Check that the
1291 * frame is followed by a second frame at the expected offset.
1292 * We could also check the two ac3 CRCs, but we don't do that right now */
1293 while (c.offset < 1024) {
1294 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 5)))
1297 if (c.data[0] == 0x0b && c.data[1] == 0x77) {
1298 guint bsid = c.data[5] >> 3;
1302 guint fscod = c.data[4] >> 6;
1303 guint frmsizecod = c.data[4] & 0x3f;
1305 if (fscod < 3 && frmsizecod < 38) {
1306 DataScanCtx c_next = c;
1309 frame_size = ac3_frmsizecod_tbl[frmsizecod].frm_size[fscod];
1310 GST_LOG ("possible AC3 frame sync at offset %"
1311 G_GUINT64_FORMAT ", size=%u", c.offset, frame_size);
1312 if (data_scan_ctx_ensure_data (tf, &c_next, (frame_size * 2) + 5)) {
1313 data_scan_ctx_advance (tf, &c_next, frame_size * 2);
1315 if (c_next.data[0] == 0x0b && c_next.data[1] == 0x77) {
1316 fscod = c_next.data[4] >> 6;
1317 frmsizecod = c_next.data[4] & 0x3f;
1319 if (fscod < 3 && frmsizecod < 38) {
1320 GstTypeFindProbability prob;
1322 GST_LOG ("found second AC3 frame (size=%u), looks good",
1323 ac3_frmsizecod_tbl[frmsizecod].frm_size[fscod]);
1325 prob = GST_TYPE_FIND_MAXIMUM;
1327 prob = GST_TYPE_FIND_NEARLY_CERTAIN;
1329 gst_type_find_suggest (tf, prob, AC3_CAPS);
1333 GST_LOG ("no second AC3 frame found, false sync");
1337 } else if (bsid <= 16 && bsid > 10) {
1339 DataScanCtx c_next = c;
1342 frame_size = (((c.data[2] & 0x07) << 8) + c.data[3]) + 1;
1343 GST_LOG ("possible E-AC3 frame sync at offset %"
1344 G_GUINT64_FORMAT ", size=%u", c.offset, frame_size);
1345 if (data_scan_ctx_ensure_data (tf, &c_next, (frame_size * 2) + 5)) {
1346 data_scan_ctx_advance (tf, &c_next, frame_size * 2);
1348 if (c_next.data[0] == 0x0b && c_next.data[1] == 0x77) {
1349 GstTypeFindProbability prob;
1351 GST_LOG ("found second E-AC3 frame, looks good");
1353 prob = GST_TYPE_FIND_MAXIMUM;
1355 prob = GST_TYPE_FIND_NEARLY_CERTAIN;
1357 gst_type_find_suggest (tf, prob, EAC3_CAPS);
1360 GST_LOG ("no second E-AC3 frame found, false sync");
1364 GST_LOG ("invalid AC3 BSID: %u", bsid);
1367 data_scan_ctx_advance (tf, &c, 1);
1371 /*** audio/x-dts ***/
1372 static GstStaticCaps dts_caps = GST_STATIC_CAPS ("audio/x-dts");
1373 #define DTS_CAPS (gst_static_caps_get (&dts_caps))
1374 #define DTS_MIN_FRAMESIZE 96
1375 #define DTS_MAX_FRAMESIZE 18725 /* 16384*16/14 */
1378 dts_parse_frame_header (DataScanCtx * c, guint * frame_size,
1379 guint * sample_rate, guint * channels, guint * depth, guint * endianness)
1381 static const int sample_rates[16] = { 0, 8000, 16000, 32000, 0, 0, 11025,
1382 22050, 44100, 0, 0, 12000, 24000, 48000, 96000, 192000
1384 static const guint8 channels_table[16] = { 1, 2, 2, 2, 2, 3, 3, 4, 4, 5,
1389 guint num_blocks, chans, lfe, i;
1391 marker = GST_READ_UINT32_BE (c->data);
1393 /* raw big endian or 14-bit big endian */
1394 if (marker == 0x7FFE8001 || marker == 0x1FFFE800) {
1395 *endianness = G_BIG_ENDIAN;
1396 for (i = 0; i < G_N_ELEMENTS (hdr); ++i)
1397 hdr[i] = GST_READ_UINT16_BE (c->data + (i * sizeof (guint16)));
1399 /* raw little endian or 14-bit little endian */
1400 if (marker == 0xFE7F0180 || marker == 0xFF1F00E8) {
1401 *endianness = G_LITTLE_ENDIAN;
1402 for (i = 0; i < G_N_ELEMENTS (hdr); ++i)
1403 hdr[i] = GST_READ_UINT16_LE (c->data + (i * sizeof (guint16)));
1408 GST_LOG ("dts sync marker 0x%08x at offset %u", marker, (guint) c->offset);
1411 if (marker == 0x1FFFE800 || marker == 0xFF1F00E8) {
1412 if ((hdr[2] & 0xFFF0) != 0x07F0)
1414 /* discard top 2 bits (2 void), shift in 2 */
1415 hdr[0] = (hdr[0] << 2) | ((hdr[1] >> 12) & 0x0003);
1416 /* discard top 4 bits (2 void, 2 shifted into hdr[0]), shift in 4 etc. */
1417 hdr[1] = (hdr[1] << 4) | ((hdr[2] >> 10) & 0x000F);
1418 hdr[2] = (hdr[2] << 6) | ((hdr[3] >> 8) & 0x003F);
1419 hdr[3] = (hdr[3] << 8) | ((hdr[4] >> 6) & 0x00FF);
1420 hdr[4] = (hdr[4] << 10) | ((hdr[5] >> 4) & 0x03FF);
1421 hdr[5] = (hdr[5] << 12) | ((hdr[6] >> 2) & 0x0FFF);
1422 hdr[6] = (hdr[6] << 14) | ((hdr[7] >> 0) & 0x3FFF);
1423 g_assert (hdr[0] == 0x7FFE && hdr[1] == 0x8001);
1429 GST_LOG ("frame header: %04x%04x%04x%04x", hdr[2], hdr[3], hdr[4], hdr[5]);
1431 num_blocks = (hdr[2] >> 2) & 0x7F;
1432 *frame_size = (((hdr[2] & 0x03) << 12) | (hdr[3] >> 4)) + 1;
1433 chans = ((hdr[3] & 0x0F) << 2) | (hdr[4] >> 14);
1434 *sample_rate = sample_rates[(hdr[4] >> 10) & 0x0F];
1435 lfe = (hdr[5] >> 9) & 0x03;
1437 if (num_blocks < 5 || *frame_size < 96 || *sample_rate == 0)
1440 if (marker == 0x1FFFE800 || marker == 0xFF1F00E8)
1441 *frame_size = (*frame_size * 16) / 14; /* FIXME: round up? */
1443 if (chans < G_N_ELEMENTS (channels_table))
1444 *channels = channels_table[chans] + ((lfe) ? 1 : 0);
1452 dts_type_find (GstTypeFind * tf, gpointer unused)
1454 DataScanCtx c = { 0, NULL, 0 };
1456 /* Search for an dts frame; not neccesarily right at the start, but give it
1457 * a lower probability if not found right at the start. Check that the
1458 * frame is followed by a second frame at the expected offset. */
1459 while (c.offset <= DTS_MAX_FRAMESIZE) {
1460 guint frame_size = 0, rate = 0, chans = 0, depth = 0, endianness = 0;
1462 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, DTS_MIN_FRAMESIZE)))
1465 if (G_UNLIKELY (dts_parse_frame_header (&c, &frame_size, &rate, &chans,
1466 &depth, &endianness))) {
1467 GstTypeFindProbability prob;
1470 prob = (c.offset == 0) ? GST_TYPE_FIND_LIKELY : GST_TYPE_FIND_POSSIBLE;
1472 /* check for second frame sync */
1474 data_scan_ctx_advance (tf, &next_c, frame_size);
1475 if (data_scan_ctx_ensure_data (tf, &next_c, 4)) {
1476 GST_LOG ("frame size: %u 0x%04x", frame_size, frame_size);
1477 GST_MEMDUMP ("second frame sync", next_c.data, 4);
1478 if (GST_READ_UINT32_BE (c.data) == GST_READ_UINT32_BE (next_c.data))
1479 prob = GST_TYPE_FIND_MAXIMUM;
1483 gst_type_find_suggest_simple (tf, prob, "audio/x-dts",
1484 "rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, chans,
1485 "depth", G_TYPE_INT, depth, "endianness", G_TYPE_INT, endianness,
1486 "framed", G_TYPE_BOOLEAN, FALSE, NULL);
1488 gst_type_find_suggest_simple (tf, prob, "audio/x-dts",
1489 "rate", G_TYPE_INT, rate, "depth", G_TYPE_INT, depth,
1490 "endianness", G_TYPE_INT, endianness,
1491 "framed", G_TYPE_BOOLEAN, FALSE, NULL);
1497 data_scan_ctx_advance (tf, &c, 1);
1503 /* can only be detected by using the extension, in which case we use the default
1505 static GstStaticCaps gsm_caps =
1506 GST_STATIC_CAPS ("audio/x-gsm, rate=8000, channels=1");
1508 #define GSM_CAPS (gst_static_caps_get(&gsm_caps))
1512 static GstStaticCaps wavpack_caps =
1513 GST_STATIC_CAPS ("audio/x-wavpack, framed = (boolean) false");
1515 #define WAVPACK_CAPS (gst_static_caps_get(&wavpack_caps))
1517 static GstStaticCaps wavpack_correction_caps =
1518 GST_STATIC_CAPS ("audio/x-wavpack-correction, framed = (boolean) false");
1520 #define WAVPACK_CORRECTION_CAPS (gst_static_caps_get(&wavpack_correction_caps))
1523 wavpack_type_find (GstTypeFind * tf, gpointer unused)
1529 data = gst_type_find_peek (tf, 0, 32);
1533 if (data[0] != 'w' || data[1] != 'v' || data[2] != 'p' || data[3] != 'k')
1536 /* Note: wavpack blocks can be fairly large (easily 60-110k), possibly
1537 * larger than the max. limits imposed by certain typefinding elements
1538 * like id3demux or apedemux, so typefinding is most likely only going to
1539 * work in pull-mode */
1540 blocksize = GST_READ_UINT32_LE (data + 4);
1541 GST_LOG ("wavpack header, blocksize=0x%04x", blocksize);
1543 while (offset < 32 + blocksize) {
1546 /* get chunk header */
1547 GST_LOG ("peeking at chunk at offset 0x%04x", (guint) offset);
1548 data = gst_type_find_peek (tf, offset, 4);
1551 sublen = ((guint32) data[1]) << 1;
1552 if (data[0] & 0x80) {
1553 sublen |= (((guint32) data[2]) << 9) | (((guint32) data[3]) << 17);
1554 sublen += 1 + 3; /* id + length */
1556 sublen += 1 + 1; /* id + length */
1558 if (sublen > blocksize - offset + 32) {
1559 GST_LOG ("chunk length too big (%u > %" G_GUINT64_FORMAT ")", sublen,
1560 blocksize - offset);
1563 if ((data[0] & 0x20) == 0) {
1564 switch (data[0] & 0x0f) {
1565 case 0xa: /* ID_WV_BITSTREAM */
1566 case 0xc: /* ID_WVX_BITSTREAM */
1567 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, WAVPACK_CAPS);
1569 case 0xb: /* ID_WVC_BITSTREAM */
1570 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY,
1571 WAVPACK_CORRECTION_CAPS);
1581 /*** application/postscrip ***/
1582 static GstStaticCaps postscript_caps =
1583 GST_STATIC_CAPS ("application/postscript");
1585 #define POSTSCRIPT_CAPS (gst_static_caps_get(&postscript_caps))
1588 postscript_type_find (GstTypeFind * tf, gpointer unused)
1590 const guint8 *data = gst_type_find_peek (tf, 0, 3);
1594 if (data[0] == 0x04)
1596 if (data[0] == '%' && data[1] == '!')
1597 gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, POSTSCRIPT_CAPS);
1601 /*** image/svg+xml ***/
1602 static GstStaticCaps svg_caps = GST_STATIC_CAPS ("image/svg+xml");
1604 #define SVG_CAPS (gst_static_caps_get(&svg_caps))
1607 svg_type_find (GstTypeFind * tf, gpointer unused)
1609 static const gchar svg_doctype[] = "!DOCTYPE svg";
1610 static const gchar svg_tag[] = "<svg";
1611 DataScanCtx c = { 0, NULL, 0 };
1613 while (c.offset <= 1024) {
1614 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 12)))
1617 if (memcmp (svg_doctype, c.data, 12) == 0) {
1618 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SVG_CAPS);
1620 } else if (memcmp (svg_tag, c.data, 4) == 0) {
1621 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, SVG_CAPS);
1624 data_scan_ctx_advance (tf, &c, 1);
1628 /*** multipart/x-mixed-replace mimestream ***/
1630 static GstStaticCaps multipart_caps =
1631 GST_STATIC_CAPS ("multipart/x-mixed-replace");
1632 #define MULTIPART_CAPS gst_static_caps_get(&multipart_caps)
1634 /* multipart/x-mixed replace is:
1635 * <maybe some whitespace>--<some ascii chars>[\r]\n
1636 * <more ascii chars>[\r]\nContent-type:<more ascii>[\r]\n */
1638 multipart_type_find (GstTypeFind * tf, gpointer unused)
1643 #define MULTIPART_MAX_BOUNDARY_OFFSET 16
1644 data = gst_type_find_peek (tf, 0, MULTIPART_MAX_BOUNDARY_OFFSET);
1649 x - data < MULTIPART_MAX_BOUNDARY_OFFSET - 2 && g_ascii_isspace (*x);
1651 if (x[0] != '-' || x[1] != '-')
1654 /* Could be okay, peek what should be enough for a complete header */
1655 #define MULTIPART_MAX_HEADER_SIZE 256
1656 data = gst_type_find_peek (tf, 0, MULTIPART_MAX_HEADER_SIZE);
1660 for (x = data; x - data < MULTIPART_MAX_HEADER_SIZE - 14; x++) {
1661 if (!isascii (*x)) {
1665 !g_ascii_strncasecmp ("content-type:", (gchar *) x + 1, 13)) {
1666 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MULTIPART_CAPS);
1672 /*** video/mpeg systemstream ***/
1673 static GstStaticCaps mpeg_sys_caps = GST_STATIC_CAPS ("video/mpeg, "
1674 "systemstream = (boolean) true, mpegversion = (int) [ 1, 2 ]");
1676 #define MPEG_SYS_CAPS gst_static_caps_get(&mpeg_sys_caps)
1677 #define IS_MPEG_HEADER(data) (G_UNLIKELY((((guint8 *)(data))[0] == 0x00) && \
1678 (((guint8 *)(data))[1] == 0x00) && \
1679 (((guint8 *)(data))[2] == 0x01)))
1681 #define IS_MPEG_PACK_CODE(b) ((b) == 0xBA)
1682 #define IS_MPEG_SYS_CODE(b) ((b) == 0xBB)
1683 #define IS_MPEG_PACK_HEADER(data) (IS_MPEG_HEADER (data) && \
1684 IS_MPEG_PACK_CODE (((guint8 *)(data))[3]))
1686 #define IS_MPEG_PES_CODE(b) (((b) & 0xF0) == 0xE0 || ((b) & 0xF0) == 0xC0 || \
1688 #define IS_MPEG_PES_HEADER(data) (IS_MPEG_HEADER (data) && \
1689 IS_MPEG_PES_CODE (((guint8 *)(data))[3]))
1691 #define MPEG2_MAX_PROBE_LENGTH (128 * 1024) /* 128kB should be 64 packs of the
1692 * most common 2kB pack size. */
1694 #define MPEG2_MIN_SYS_HEADERS 2
1695 #define MPEG2_MAX_SYS_HEADERS 5
1698 mpeg_sys_is_valid_pack (GstTypeFind * tf, const guint8 * data, guint len,
1701 /* Check the pack header @ offset for validity, assuming that the 4 byte header
1702 * itself has already been checked. */
1708 /* Check marker bits */
1709 if ((data[4] & 0xC4) == 0x44) {
1714 if ((data[6] & 0x04) != 0x04 ||
1715 (data[8] & 0x04) != 0x04 ||
1716 (data[9] & 0x01) != 0x01 || (data[12] & 0x03) != 0x03)
1719 stuff_len = data[13] & 0x07;
1721 /* Check the following header bytes, if we can */
1722 if ((14 + stuff_len + 4) <= len) {
1723 if (!IS_MPEG_HEADER (data + 14 + stuff_len))
1727 *pack_size = 14 + stuff_len;
1729 } else if ((data[4] & 0xF1) == 0x21) {
1731 if ((data[6] & 0x01) != 0x01 ||
1732 (data[8] & 0x01) != 0x01 ||
1733 (data[9] & 0x80) != 0x80 || (data[11] & 0x01) != 0x01)
1736 /* Check the following header bytes, if we can */
1737 if ((12 + 4) <= len) {
1738 if (!IS_MPEG_HEADER (data + 12))
1750 mpeg_sys_is_valid_pes (GstTypeFind * tf, const guint8 * data, guint len,
1753 guint pes_packet_len;
1755 /* Check the PES header at the given position, assuming the header code itself
1756 * was already checked */
1760 /* For MPEG Program streams, unbounded PES is not allowed, so we must have a
1761 * valid length present */
1762 pes_packet_len = GST_READ_UINT16_BE (data + 4);
1763 if (pes_packet_len == 0)
1766 /* Check the following header, if we can */
1767 if (6 + pes_packet_len + 4 <= len) {
1768 if (!IS_MPEG_HEADER (data + 6 + pes_packet_len))
1773 *pack_size = 6 + pes_packet_len;
1778 mpeg_sys_is_valid_sys (GstTypeFind * tf, const guint8 * data, guint len,
1783 /* Check the System header at the given position, assuming the header code itself
1784 * was already checked */
1787 sys_hdr_len = GST_READ_UINT16_BE (data + 4);
1788 if (sys_hdr_len < 6)
1791 /* Check the following header, if we can */
1792 if (6 + sys_hdr_len + 4 <= len) {
1793 if (!IS_MPEG_HEADER (data + 6 + sys_hdr_len))
1798 *pack_size = 6 + sys_hdr_len;
1803 /* calculation of possibility to identify random data as mpeg systemstream:
1804 * bits that must match in header detection: 32 (or more)
1805 * chance that random data is identifed: 1/2^32
1806 * chance that MPEG2_MIN_PACK_HEADERS headers are identified:
1807 * 1/2^(32*MPEG2_MIN_PACK_HEADERS)
1808 * chance that this happens in MPEG2_MAX_PROBE_LENGTH bytes:
1809 * 1-(1+1/2^(32*MPEG2_MIN_PACK_HEADERS)^MPEG2_MAX_PROBE_LENGTH)
1810 * for current values:
1811 * 1-(1+1/2^(32*4)^101024)
1813 * Since we also check marker bits and pes packet lengths, this probability is a
1814 * very coarse upper bound.
1817 mpeg_sys_type_find (GstTypeFind * tf, gpointer unused)
1819 const guint8 *data, *data0, *first_sync, *end;
1820 gint mpegversion = 0;
1821 guint pack_headers = 0;
1822 guint pes_headers = 0;
1824 guint since_last_sync = 0;
1825 guint32 sync_word = 0xffffffff;
1830 len = MPEG2_MAX_PROBE_LENGTH;
1833 data = gst_type_find_peek (tf, 0, 5 + len);
1834 } while (data == NULL && len >= 32);
1846 while (data < end) {
1848 if (sync_word == 0x00000100) {
1849 /* Found potential sync word */
1850 if (first_sync == NULL)
1851 first_sync = data - 3;
1853 if (since_last_sync > 4) {
1854 /* If more than 4 bytes since the last sync word, reset our counters,
1855 * as we're only interested in counting contiguous packets */
1856 pes_headers = pack_headers = 0;
1860 if (IS_MPEG_PACK_CODE (data[0])) {
1861 if ((data[1] & 0xC0) == 0x40) {
1864 } else if ((data[1] & 0xF0) == 0x20) {
1867 if (mpegversion != 0 &&
1868 mpeg_sys_is_valid_pack (tf, data - 3, end - data + 3, &pack_size)) {
1871 } else if (IS_MPEG_PES_CODE (data[0])) {
1873 if (mpeg_sys_is_valid_pes (tf, data - 3, end - data + 3, &pack_size)) {
1875 if (mpegversion == 0)
1878 } else if (IS_MPEG_SYS_CODE (data[0])) {
1879 if (mpeg_sys_is_valid_sys (tf, data - 3, end - data + 3, &pack_size)) {
1884 /* If we found a packet with a known size, skip the bytes in it and loop
1885 * around to check the next packet. */
1886 if (pack_size != 0) {
1887 data += pack_size - 3;
1888 sync_word = 0xffffffff;
1889 since_last_sync = 0;
1894 sync_word |= data[0];
1898 /* If we have found MAX headers, and *some* were pes headers (pack headers
1899 * are optional in an mpeg system stream) then return our high-probability
1901 if (pes_headers > 0 && (pack_headers + pes_headers) > MPEG2_MAX_SYS_HEADERS)
1905 /* If we at least saw MIN headers, and *some* were pes headers (pack headers
1906 * are optional in an mpeg system stream) then return a lower-probability
1908 if (pes_headers > 0 && (pack_headers + pes_headers) > MPEG2_MIN_SYS_HEADERS)
1916 prob = GST_TYPE_FIND_POSSIBLE + (10 * (pack_headers + pes_headers));
1917 prob = MIN (prob, GST_TYPE_FIND_MAXIMUM);
1919 /* lower probability if the first packet wasn't right at the start */
1920 if (data0 != first_sync && prob >= 10)
1923 GST_LOG ("Suggesting MPEG %d system stream, %d packs, %d pes, prob %u%%\n",
1924 mpegversion, pack_headers, pes_headers, prob);
1926 gst_type_find_suggest_simple (tf, prob, "video/mpeg",
1927 "systemstream", G_TYPE_BOOLEAN, TRUE,
1928 "mpegversion", G_TYPE_INT, mpegversion, NULL);
1932 /*** video/mpegts Transport Stream ***/
1933 static GstStaticCaps mpegts_caps = GST_STATIC_CAPS ("video/mpegts, "
1934 "systemstream = (boolean) true, packetsize = (int) [ 188, 208 ]");
1935 #define MPEGTS_CAPS gst_static_caps_get(&mpegts_caps)
1937 #define GST_MPEGTS_TYPEFIND_MIN_HEADERS 4
1938 #define GST_MPEGTS_TYPEFIND_MAX_HEADERS 10
1939 #define GST_MPEGTS_MAX_PACKET_SIZE 208
1940 #define GST_MPEGTS_TYPEFIND_SYNC_SIZE \
1941 (GST_MPEGTS_TYPEFIND_MIN_HEADERS * GST_MPEGTS_MAX_PACKET_SIZE)
1942 #define GST_MPEGTS_TYPEFIND_MAX_SYNC \
1943 (GST_MPEGTS_TYPEFIND_MAX_HEADERS * GST_MPEGTS_MAX_PACKET_SIZE)
1944 #define GST_MPEGTS_TYPEFIND_SCAN_LENGTH \
1945 (GST_MPEGTS_TYPEFIND_MAX_SYNC * 4)
1947 #define MPEGTS_HDR_SIZE 4
1948 /* Check for sync byte, error_indicator == 0 and packet has payload */
1949 #define IS_MPEGTS_HEADER(data) (((data)[0] == 0x47) && \
1950 (((data)[1] & 0x80) == 0x00) && \
1951 (((data)[3] & 0x30) != 0x00))
1953 /* Helper function to search ahead at intervals of packet_size for mpegts
1956 mpeg_ts_probe_headers (GstTypeFind * tf, guint64 offset, gint packet_size)
1958 /* We always enter this function having found at least one header already */
1960 const guint8 *data = NULL;
1962 GST_LOG ("looking for mpeg-ts packets of size %u", packet_size);
1963 while (found < GST_MPEGTS_TYPEFIND_MAX_HEADERS) {
1964 offset += packet_size;
1966 data = gst_type_find_peek (tf, offset, MPEGTS_HDR_SIZE);
1967 if (data == NULL || !IS_MPEGTS_HEADER (data))
1971 GST_LOG ("mpeg-ts sync #%2d at offset %" G_GUINT64_FORMAT, found, offset);
1977 /* Try and detect at least 4 packets in at most 10 packets worth of
1978 * data. Need to try several possible packet sizes */
1980 mpeg_ts_type_find (GstTypeFind * tf, gpointer unused)
1982 /* TS packet sizes to test: normal, DVHS packet size and
1983 * FEC with 16 or 20 byte codes packet size. */
1984 const gint pack_sizes[] = { 188, 192, 204, 208 };
1985 const guint8 *data = NULL;
1987 guint64 skipped = 0;
1989 while (skipped < GST_MPEGTS_TYPEFIND_SCAN_LENGTH) {
1990 if (size < MPEGTS_HDR_SIZE) {
1991 data = gst_type_find_peek (tf, skipped, GST_MPEGTS_TYPEFIND_SYNC_SIZE);
1994 size = GST_MPEGTS_TYPEFIND_SYNC_SIZE;
1997 /* Have at least MPEGTS_HDR_SIZE bytes at this point */
1998 if (IS_MPEGTS_HEADER (data)) {
2001 GST_LOG ("possible mpeg-ts sync at offset %" G_GUINT64_FORMAT, skipped);
2003 for (p = 0; p < G_N_ELEMENTS (pack_sizes); p++) {
2006 /* Probe ahead at size pack_sizes[p] */
2007 found = mpeg_ts_probe_headers (tf, skipped, pack_sizes[p]);
2008 if (found >= GST_MPEGTS_TYPEFIND_MIN_HEADERS) {
2011 /* found at least 4 headers. 10 headers = MAXIMUM probability.
2012 * Arbitrarily, I assigned 10% probability for each header we
2013 * found, 40% -> 100% */
2014 probability = MIN (10 * found, GST_TYPE_FIND_MAXIMUM);
2016 gst_type_find_suggest_simple (tf, probability, "video/mpegts",
2017 "systemstream", G_TYPE_BOOLEAN, TRUE,
2018 "packetsize", G_TYPE_INT, pack_sizes[p], NULL);
2029 #define GST_MPEGVID_TYPEFIND_TRY_PICTURES 6
2030 #define GST_MPEGVID_TYPEFIND_TRY_SYNC (100 * 1024) /* 100 kB */
2032 /* Scan ahead a maximum of max_extra_offset bytes until the next IS_MPEG_HEADER
2033 * offset. After the call, offset will be after the 0x000001, i.e. at the 4th
2034 * byte of the MPEG header. Returns TRUE if a header was found, FALSE if not.
2037 mpeg_find_next_header (GstTypeFind * tf, DataScanCtx * c,
2038 guint64 max_extra_offset)
2040 guint64 extra_offset;
2042 for (extra_offset = 0; extra_offset <= max_extra_offset; ++extra_offset) {
2043 if (!data_scan_ctx_ensure_data (tf, c, 4))
2045 if (IS_MPEG_HEADER (c->data)) {
2046 data_scan_ctx_advance (tf, c, 3);
2049 data_scan_ctx_advance (tf, c, 1);
2054 /*** video/mpeg MPEG-4 elementary video stream ***/
2056 static GstStaticCaps mpeg4_video_caps = GST_STATIC_CAPS ("video/mpeg, "
2057 "systemstream=(boolean)false, mpegversion=4, parsed=(boolean)false");
2058 #define MPEG4_VIDEO_CAPS gst_static_caps_get(&mpeg4_video_caps)
2061 * This typefind is based on the elementary video header defined in
2062 * http://xhelmboyx.tripod.com/formats/mpeg-layout.txt
2063 * In addition, it allows the visual object sequence header to be
2064 * absent, and even the VOS header to be absent. In the latter case,
2065 * a number of VOPs have to be present.
2068 mpeg4_video_type_find (GstTypeFind * tf, gpointer unused)
2070 DataScanCtx c = { 0, NULL, 0 };
2071 gboolean seen_vios_at_0 = FALSE;
2072 gboolean seen_vios = FALSE;
2073 gboolean seen_vos = FALSE;
2074 gboolean seen_vol = FALSE;
2075 guint num_vop_headers = 0;
2078 while (c.offset < GST_MPEGVID_TYPEFIND_TRY_SYNC) {
2079 if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES)
2082 if (!mpeg_find_next_header (tf, &c,
2083 GST_MPEGVID_TYPEFIND_TRY_SYNC - c.offset))
2088 /* visual_object_sequence_start_code */
2091 break; /* Terminate at second vios */
2093 seen_vios_at_0 = TRUE;
2095 data_scan_ctx_advance (tf, &c, 2);
2096 if (!mpeg_find_next_header (tf, &c, 0))
2101 /* Optional metadata */
2103 if (!mpeg_find_next_header (tf, &c, 24))
2107 /* visual_object_start_code (consider it optional) */
2109 data_scan_ctx_advance (tf, &c, 2);
2110 /* may contain ID marker and YUV clamping */
2111 if (!mpeg_find_next_header (tf, &c, 7))
2117 /* video_object_start_code */
2120 break; /* Terminate at second vos */
2122 data_scan_ctx_advance (tf, &c, 2);
2126 /* video_object_layer_start_code */
2127 if (sc >= 0x20 && sc <= 0x2F) {
2129 data_scan_ctx_advance (tf, &c, 5);
2133 /* video_object_plane_start_code */
2136 data_scan_ctx_advance (tf, &c, 2);
2140 /* Unknown start code. */
2143 if (num_vop_headers > 0 || seen_vol) {
2144 GstTypeFindProbability probability = 0;
2146 GST_LOG ("Found %d pictures, vios: %d, vos:%d, vol:%d", num_vop_headers,
2147 seen_vios, seen_vos, seen_vol);
2149 if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_vios_at_0
2150 && seen_vos && seen_vol)
2151 probability = GST_TYPE_FIND_MAXIMUM - 1;
2152 else if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_vios
2153 && seen_vos && seen_vol)
2154 probability = GST_TYPE_FIND_NEARLY_CERTAIN - 1;
2155 else if (seen_vios_at_0 && seen_vos && seen_vol)
2156 probability = GST_TYPE_FIND_NEARLY_CERTAIN - 6;
2157 else if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_vos
2159 probability = GST_TYPE_FIND_NEARLY_CERTAIN - 6;
2160 else if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_vol)
2161 probability = GST_TYPE_FIND_NEARLY_CERTAIN - 9;
2162 else if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES)
2163 probability = GST_TYPE_FIND_LIKELY - 1;
2164 else if (num_vop_headers > 2 && seen_vios && seen_vos && seen_vol)
2165 probability = GST_TYPE_FIND_LIKELY - 9;
2166 else if (seen_vios && seen_vos && seen_vol)
2167 probability = GST_TYPE_FIND_LIKELY - 20;
2168 else if (num_vop_headers > 0 && seen_vos && seen_vol)
2169 probability = GST_TYPE_FIND_POSSIBLE;
2170 else if (num_vop_headers > 0)
2171 probability = GST_TYPE_FIND_POSSIBLE - 10;
2172 else if (seen_vos && seen_vol)
2173 probability = GST_TYPE_FIND_POSSIBLE - 20;
2175 gst_type_find_suggest (tf, probability, MPEG4_VIDEO_CAPS);
2179 /*** video/x-h263 H263 video stream ***/
2180 static GstStaticCaps h263_video_caps = GST_STATIC_CAPS ("video/x-h263");
2182 #define H263_VIDEO_CAPS gst_static_caps_get(&h263_video_caps)
2184 #define H263_MAX_PROBE_LENGTH (128 * 1024)
2187 h263_video_type_find (GstTypeFind * tf, gpointer unused)
2189 DataScanCtx c = { 0, NULL, 0 };
2197 while (c.offset < H263_MAX_PROBE_LENGTH) {
2198 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 4)))
2201 /* Find the picture start code */
2202 data = (data << 8) + c.data[0];
2203 psc = data & G_GUINT64_CONSTANT (0xfffffc0000);
2204 if (psc == 0x800000) {
2207 tr = (data & 0x3fc) >> 2;
2211 /* Now that we have a Valid PSC, check if we also have a valid PTYPE and
2212 the Source Format, which should range between 1 and 5 */
2213 if (((tr >> 6) == 0x2) && (format > 0 && format < 6))
2218 /* FIXME: maybe bail out early if we get mostly bad syncs ? */
2221 data_scan_ctx_advance (tf, &c, 1);
2224 if (good > 0 && bad == 0)
2225 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, H263_VIDEO_CAPS);
2226 else if (good > 2 * bad)
2227 gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, H263_VIDEO_CAPS);
2232 /*** video/x-h264 H264 elementary video stream ***/
2234 static GstStaticCaps h264_video_caps =
2235 GST_STATIC_CAPS ("video/x-h264,stream-format=byte-stream");
2237 #define H264_VIDEO_CAPS gst_static_caps_get(&h264_video_caps)
2239 #define H264_MAX_PROBE_LENGTH (128 * 1024) /* 128kB for HD should be enough. */
2242 h264_video_type_find (GstTypeFind * tf, gpointer unused)
2244 DataScanCtx c = { 0, NULL, 0 };
2246 /* Stream consists of: a series of sync codes (00 00 00 01) followed
2253 while (c.offset < H264_MAX_PROBE_LENGTH) {
2254 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 4)))
2257 if (IS_MPEG_HEADER (c.data)) {
2258 nut = c.data[3] & 0x9f; /* forbiden_zero_bit | nal_unit_type */
2259 ref = c.data[3] & 0x60; /* nal_ref_idc */
2261 /* if forbiden bit is different to 0 won't be h264 */
2267 /* collect statistics about the NAL types */
2268 if ((nut >= 1 && nut <= 13) || nut == 19) {
2269 if ((nut == 5 && ref == 0) ||
2270 ((nut == 6 || (nut >= 9 && nut <= 12)) && ref != 0)) {
2275 } else if (nut >= 14 && nut <= 33) {
2277 /* Theoretically these are good, since if they exist in the
2278 stream it merely means that a newer backwards-compatible
2279 h.264 stream. But we should be identifying that separately. */
2282 /* unspecified, application specific */
2283 /* don't consider these bad */
2286 GST_DEBUG ("good %d bad %d", good, bad);
2288 if (good >= 10 && bad < 4) {
2289 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, H264_VIDEO_CAPS);
2293 data_scan_ctx_advance (tf, &c, 4);
2295 data_scan_ctx_advance (tf, &c, 1);
2298 if (good >= 2 && bad < 1) {
2299 gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, H264_VIDEO_CAPS);
2304 /*** video/mpeg video stream ***/
2306 static GstStaticCaps mpeg_video_caps = GST_STATIC_CAPS ("video/mpeg, "
2307 "systemstream = (boolean) false");
2308 #define MPEG_VIDEO_CAPS gst_static_caps_get(&mpeg_video_caps)
2311 * Idea is the same as MPEG system stream typefinding: We check each
2312 * byte of the stream to see if - from that point on - the stream
2313 * matches a predefined set of marker bits as defined in the MPEG
2316 * I'm sure someone will do a chance calculation here too.
2320 mpeg_video_stream_type_find (GstTypeFind * tf, gpointer unused)
2322 DataScanCtx c = { 0, NULL, 0 };
2323 gboolean seen_seq_at_0 = FALSE;
2324 gboolean seen_seq = FALSE;
2325 gboolean seen_gop = FALSE;
2326 guint64 last_pic_offset = 0;
2327 guint num_pic_headers = 0;
2330 while (c.offset < GST_MPEGVID_TYPEFIND_TRY_SYNC) {
2331 if (found >= GST_MPEGVID_TYPEFIND_TRY_PICTURES)
2334 if (!data_scan_ctx_ensure_data (tf, &c, 5))
2337 if (!IS_MPEG_HEADER (c.data))
2340 /* a pack header indicates that this isn't an elementary stream */
2341 if (c.data[3] == 0xBA && mpeg_sys_is_valid_pack (tf, c.data, c.size, NULL))
2344 /* do we have a sequence header? */
2345 if (c.data[3] == 0xB3) {
2346 seen_seq_at_0 = seen_seq_at_0 || (c.offset == 0);
2348 data_scan_ctx_advance (tf, &c, 4 + 8);
2352 /* or a GOP header */
2353 if (c.data[3] == 0xB8) {
2355 data_scan_ctx_advance (tf, &c, 8);
2359 /* but what we'd really like to see is a picture header */
2360 if (c.data[3] == 0x00) {
2362 last_pic_offset = c.offset;
2363 data_scan_ctx_advance (tf, &c, 8);
2367 /* ... each followed by a slice header with slice_vertical_pos=1 that's
2368 * not too far away from the previously seen picture header. */
2369 if (c.data[3] == 0x01 && num_pic_headers > found &&
2370 (c.offset - last_pic_offset) >= 4 &&
2371 (c.offset - last_pic_offset) <= 64) {
2372 data_scan_ctx_advance (tf, &c, 4);
2379 data_scan_ctx_advance (tf, &c, 1);
2382 if (found > 0 || seen_seq) {
2383 GstTypeFindProbability probability = 0;
2385 GST_LOG ("Found %d pictures, seq:%d, gop:%d", found, seen_seq, seen_gop);
2387 if (found >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_seq && seen_gop)
2388 probability = GST_TYPE_FIND_NEARLY_CERTAIN - 1;
2389 else if (found >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_seq)
2390 probability = GST_TYPE_FIND_NEARLY_CERTAIN - 9;
2391 else if (found >= GST_MPEGVID_TYPEFIND_TRY_PICTURES)
2392 probability = GST_TYPE_FIND_LIKELY;
2393 else if (seen_seq_at_0 && seen_gop && found > 2)
2394 probability = GST_TYPE_FIND_LIKELY - 10;
2395 else if (seen_seq && seen_gop && found > 2)
2396 probability = GST_TYPE_FIND_LIKELY - 20;
2397 else if (seen_seq_at_0 && found > 0)
2398 probability = GST_TYPE_FIND_POSSIBLE;
2399 else if (seen_seq && found > 0)
2400 probability = GST_TYPE_FIND_POSSIBLE - 5;
2402 probability = GST_TYPE_FIND_POSSIBLE - 10;
2404 probability = GST_TYPE_FIND_POSSIBLE - 20;
2406 gst_type_find_suggest_simple (tf, probability, "video/mpeg",
2407 "systemstream", G_TYPE_BOOLEAN, FALSE,
2408 "mpegversion", G_TYPE_INT, 1, NULL);
2412 /*** audio/x-aiff ***/
2414 static GstStaticCaps aiff_caps = GST_STATIC_CAPS ("audio/x-aiff");
2416 #define AIFF_CAPS gst_static_caps_get(&aiff_caps)
2418 aiff_type_find (GstTypeFind * tf, gpointer unused)
2420 const guint8 *data = gst_type_find_peek (tf, 0, 4);
2422 if (data && memcmp (data, "FORM", 4) == 0) {
2424 if (memcmp (data, "AIFF", 4) == 0 || memcmp (data, "AIFC", 4) == 0)
2425 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, AIFF_CAPS);
2429 /*** audio/x-svx ***/
2431 static GstStaticCaps svx_caps = GST_STATIC_CAPS ("audio/x-svx");
2433 #define SVX_CAPS gst_static_caps_get(&svx_caps)
2435 svx_type_find (GstTypeFind * tf, gpointer unused)
2437 const guint8 *data = gst_type_find_peek (tf, 0, 4);
2439 if (data && memcmp (data, "FORM", 4) == 0) {
2441 if (memcmp (data, "8SVX", 4) == 0 || memcmp (data, "16SV", 4) == 0)
2442 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SVX_CAPS);
2446 /*** audio/x-shorten ***/
2448 static GstStaticCaps shn_caps = GST_STATIC_CAPS ("audio/x-shorten");
2450 #define SHN_CAPS gst_static_caps_get(&shn_caps)
2452 shn_type_find (GstTypeFind * tf, gpointer unused)
2454 const guint8 *data = gst_type_find_peek (tf, 0, 4);
2456 if (data && memcmp (data, "ajkg", 4) == 0) {
2457 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SHN_CAPS);
2459 data = gst_type_find_peek (tf, -8, 8);
2460 if (data && memcmp (data, "SHNAMPSK", 8) == 0) {
2461 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SHN_CAPS);
2465 /*** application/x-ape ***/
2467 static GstStaticCaps ape_caps = GST_STATIC_CAPS ("application/x-ape");
2469 #define APE_CAPS gst_static_caps_get(&ape_caps)
2471 ape_type_find (GstTypeFind * tf, gpointer unused)
2473 const guint8 *data = gst_type_find_peek (tf, 0, 4);
2475 if (data && memcmp (data, "MAC ", 4) == 0) {
2476 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY + 10, APE_CAPS);
2480 /*** ISO FORMATS ***/
2482 /*** audio/x-m4a ***/
2484 static GstStaticCaps m4a_caps = GST_STATIC_CAPS ("audio/x-m4a");
2486 #define M4A_CAPS (gst_static_caps_get(&m4a_caps))
2488 m4a_type_find (GstTypeFind * tf, gpointer unused)
2490 const guint8 *data = gst_type_find_peek (tf, 4, 8);
2492 if (data && (memcmp (data, "ftypM4A ", 8) == 0)) {
2493 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, M4A_CAPS);
2497 /*** application/x-3gp ***/
2499 /* The Q is there because variables can't start with a number. */
2500 static GstStaticCaps q3gp_caps = GST_STATIC_CAPS ("application/x-3gp");
2501 #define Q3GP_CAPS (gst_static_caps_get(&q3gp_caps))
2503 static const gchar *
2504 q3gp_type_find_get_profile (const guint8 * data)
2506 switch (GST_MAKE_FOURCC (data[0], data[1], data[2], 0)) {
2507 case GST_MAKE_FOURCC ('3', 'g', 'g', 0):
2509 case GST_MAKE_FOURCC ('3', 'g', 'p', 0):
2511 case GST_MAKE_FOURCC ('3', 'g', 's', 0):
2512 return "streaming-server";
2513 case GST_MAKE_FOURCC ('3', 'g', 'r', 0):
2514 return "progressive-download";
2522 q3gp_type_find (GstTypeFind * tf, gpointer unused)
2524 const gchar *profile;
2525 guint32 ftyp_size = 0;
2527 const guint8 *data = NULL;
2529 if ((data = gst_type_find_peek (tf, 0, 12)) == NULL) {
2534 if (memcmp (data, "ftyp", 4) != 0) {
2538 /* check major brand */
2540 if ((profile = q3gp_type_find_get_profile (data))) {
2541 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM,
2542 "application/x-3gp", "profile", G_TYPE_STRING, profile, NULL);
2546 /* check compatible brands */
2547 if ((data = gst_type_find_peek (tf, 0, 4)) != NULL) {
2548 ftyp_size = GST_READ_UINT32_BE (data);
2550 for (offset = 16; offset < ftyp_size; offset += 4) {
2551 if ((data = gst_type_find_peek (tf, offset, 3)) == NULL) {
2554 if ((profile = q3gp_type_find_get_profile (data))) {
2555 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM,
2556 "application/x-3gp", "profile", G_TYPE_STRING, profile, NULL);
2565 /*** video/mj2 and image/jp2 ***/
2566 static GstStaticCaps mj2_caps = GST_STATIC_CAPS ("video/mj2");
2568 #define MJ2_CAPS gst_static_caps_get(&mj2_caps)
2570 static GstStaticCaps jp2_caps = GST_STATIC_CAPS ("image/jp2");
2572 #define JP2_CAPS gst_static_caps_get(&jp2_caps)
2575 jp2_type_find (GstTypeFind * tf, gpointer unused)
2579 data = gst_type_find_peek (tf, 0, 24);
2584 if (memcmp (data, "\000\000\000\014jP \015\012\207\012", 12) != 0)
2587 /* check ftyp box */
2589 if (memcmp (data + 4, "ftyp", 4) == 0) {
2590 if (memcmp (data + 8, "jp2 ", 4) == 0)
2591 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, JP2_CAPS);
2592 else if (memcmp (data + 8, "mjp2", 4) == 0)
2593 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MJ2_CAPS);
2597 /*** video/quicktime ***/
2599 static GstStaticCaps qt_caps = GST_STATIC_CAPS ("video/quicktime");
2601 #define QT_CAPS gst_static_caps_get(&qt_caps)
2602 #define STRNCMP(x,y,z) (strncmp ((char*)(x), (char*)(y), z))
2604 /* FIXME 0.11: go through http://www.ftyps.com/ */
2606 qt_type_find (GstTypeFind * tf, gpointer unused)
2612 const gchar *variant = NULL;
2614 while ((data = gst_type_find_peek (tf, offset, 12)) != NULL) {
2617 if (STRNCMP (&data[4], "ftypqt ", 8) == 0) {
2618 tip = GST_TYPE_FIND_MAXIMUM;
2622 if (STRNCMP (&data[4], "ftypisom", 8) == 0 ||
2623 STRNCMP (&data[4], "ftypavc1", 8) == 0 ||
2624 STRNCMP (&data[4], "ftypmp42", 8) == 0) {
2625 tip = GST_TYPE_FIND_MAXIMUM;
2630 /* box/atom types that are in common with ISO base media file format */
2631 if (STRNCMP (&data[4], "moov", 4) == 0 ||
2632 STRNCMP (&data[4], "mdat", 4) == 0 ||
2633 STRNCMP (&data[4], "ftyp", 4) == 0 ||
2634 STRNCMP (&data[4], "free", 4) == 0 ||
2635 STRNCMP (&data[4], "uuid", 4) == 0 ||
2636 STRNCMP (&data[4], "skip", 4) == 0) {
2638 tip = GST_TYPE_FIND_LIKELY;
2640 tip = GST_TYPE_FIND_NEARLY_CERTAIN;
2643 /* other box/atom types, apparently quicktime specific */
2644 else if (STRNCMP (&data[4], "pnot", 4) == 0 ||
2645 STRNCMP (&data[4], "PICT", 4) == 0 ||
2646 STRNCMP (&data[4], "wide", 4) == 0 ||
2647 STRNCMP (&data[4], "prfl", 4) == 0) {
2648 tip = GST_TYPE_FIND_MAXIMUM;
2655 size = GST_READ_UINT32_BE (data);
2656 /* check compatible brands rather than ever expaning major brands above */
2657 if ((STRNCMP (&data[4], "ftyp", 4) == 0) && (size >= 16)) {
2658 new_offset = offset + 12;
2659 while (new_offset + 4 <= offset + size) {
2660 data = gst_type_find_peek (tf, new_offset, 4);
2663 if (STRNCMP (&data[4], "isom", 4) == 0 ||
2664 STRNCMP (&data[4], "avc1", 4) == 0 ||
2665 STRNCMP (&data[4], "mp41", 4) == 0 ||
2666 STRNCMP (&data[4], "mp42", 4) == 0) {
2667 tip = GST_TYPE_FIND_MAXIMUM;
2675 const guint8 *sizedata;
2677 sizedata = gst_type_find_peek (tf, offset + 8, 8);
2678 if (sizedata == NULL)
2681 size = GST_READ_UINT64_BE (sizedata);
2686 new_offset = offset + size;
2687 if (new_offset <= offset)
2689 offset = new_offset;
2695 GstCaps *caps = gst_caps_copy (QT_CAPS);
2697 gst_caps_set_simple (caps, "variant", G_TYPE_STRING, variant, NULL);
2698 gst_type_find_suggest (tf, tip, caps);
2699 gst_caps_unref (caps);
2701 gst_type_find_suggest (tf, tip, QT_CAPS);
2707 /*** image/x-quicktime ***/
2709 static GstStaticCaps qtif_caps = GST_STATIC_CAPS ("image/x-quicktime");
2711 #define QTIF_CAPS gst_static_caps_get(&qtif_caps)
2713 /* how many atoms we check before we give up */
2714 #define QTIF_MAXROUNDS 25
2717 qtif_type_find (GstTypeFind * tf, gpointer unused)
2720 gboolean found_idsc = FALSE;
2721 gboolean found_idat = FALSE;
2725 while ((data = gst_type_find_peek (tf, offset, 8)) != NULL) {
2728 size = GST_READ_UINT32_BE (data);
2730 const guint8 *sizedata;
2732 sizedata = gst_type_find_peek (tf, offset + 8, 8);
2733 if (sizedata == NULL)
2736 size = GST_READ_UINT64_BE (sizedata);
2741 if (STRNCMP (data + 4, "idsc", 4) == 0)
2743 if (STRNCMP (data + 4, "idat", 4) == 0)
2746 if (found_idsc && found_idat) {
2747 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, QTIF_CAPS);
2752 if (++rounds > QTIF_MAXROUNDS)
2756 if (found_idsc || found_idat) {
2757 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, QTIF_CAPS);
2762 /*** audio/x-mod ***/
2764 static GstStaticCaps mod_caps = GST_STATIC_CAPS ("audio/x-mod");
2766 #define MOD_CAPS gst_static_caps_get(&mod_caps)
2767 /* FIXME: M15 CheckType to do */
2769 mod_type_find (GstTypeFind * tf, gpointer unused)
2774 if ((data = gst_type_find_peek (tf, 1080, 4)) != NULL) {
2775 /* Protracker and variants */
2776 if ((memcmp (data, "M.K.", 4) == 0) || (memcmp (data, "M!K!", 4) == 0) ||
2778 (memcmp (data, "FLT", 3) == 0 && isdigit (data[3])) ||
2779 (memcmp (data, "EXO", 3) == 0 && isdigit (data[3])) ||
2780 /* Oktalyzer (Amiga) */
2781 (memcmp (data, "OKTA", 4) == 0) ||
2782 /* Oktalyser (Atari) */
2783 (memcmp (data, "CD81", 4) == 0) ||
2785 (memcmp (data + 1, "CHN", 3) == 0 && isdigit (data[0])) ||
2786 /* Fasttracker or Taketracker */
2787 (memcmp (data + 2, "CH", 2) == 0 && isdigit (data[0])
2788 && isdigit (data[1])) || (memcmp (data + 2, "CN", 2) == 0
2789 && isdigit (data[0]) && isdigit (data[1]))) {
2790 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2795 if ((data = gst_type_find_peek (tf, 0, 38)) != NULL) {
2796 if (memcmp (data, "Extended Module: ", 17) == 0 && data[37] == 0x1A) {
2797 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2802 if (data || (data = gst_type_find_peek (tf, 0, 8)) != NULL) {
2803 if (memcmp (data, "OKTASONG", 8) == 0) {
2804 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2808 if (data || (data = gst_type_find_peek (tf, 0, 4)) != NULL) {
2810 if ((memcmp (data, "if", 2) == 0) || (memcmp (data, "JN", 2) == 0)) {
2811 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MOD_CAPS);
2815 if ((memcmp (data, "AMF", 3) == 0 && data[3] > 10 && data[3] < 14) ||
2817 (memcmp (data, "IMPM", 4) == 0) ||
2819 (memcmp (data, "MMD0", 4) == 0) || (memcmp (data, "MMD1", 4) == 0) ||
2821 (memcmp (data, "MTM", 3) == 0)) {
2822 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2826 if (memcmp (data, "RIFF", 4) == 0) {
2827 const guint8 *data2 = gst_type_find_peek (tf, 8, 4);
2830 if (memcmp (data2, "DSMF", 4) == 0) {
2831 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2837 if (memcmp (data, "FAM\xFE", 4) == 0) {
2838 const guint8 *data2 = gst_type_find_peek (tf, 44, 3);
2841 if (memcmp (data2, "compare", 3) == 0) {
2842 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2846 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MOD_CAPS);
2851 if (memcmp (data, "GDM\xFE", 4) == 0) {
2852 const guint8 *data2 = gst_type_find_peek (tf, 71, 4);
2855 if (memcmp (data2, "GMFS", 4) == 0) {
2856 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2860 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MOD_CAPS);
2866 if ((data = gst_type_find_peek (tf, 60, 4)) != NULL) {
2867 if (memcmp (data, "IM10", 4) == 0) {
2868 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2873 if ((data = gst_type_find_peek (tf, 44, 4)) != NULL) {
2874 if (memcmp (data, "SCRM", 4) == 0) {
2875 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2880 if ((data = gst_type_find_peek (tf, 20, 8)) != NULL) {
2881 if (g_ascii_strncasecmp ((gchar *) data, "!Scream!", 8) == 0 ||
2882 g_ascii_strncasecmp ((gchar *) data, "BMOD2STM", 8) == 0) {
2883 const guint8 *id, *stmtype;
2885 if ((id = gst_type_find_peek (tf, 28, 1)) == NULL)
2887 if ((stmtype = gst_type_find_peek (tf, 29, 1)) == NULL)
2889 if (*id == 0x1A && *stmtype == 2)
2890 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2895 if ((data = gst_type_find_peek (tf, 0, 19)) != NULL) {
2896 if (memcmp (data, "ASYLUM Music Format", 19) == 0) {
2897 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
2903 /*** application/x-shockwave-flash ***/
2905 static GstStaticCaps swf_caps =
2906 GST_STATIC_CAPS ("application/x-shockwave-flash");
2907 #define SWF_CAPS (gst_static_caps_get(&swf_caps))
2909 swf_type_find (GstTypeFind * tf, gpointer unused)
2911 const guint8 *data = gst_type_find_peek (tf, 0, 4);
2913 if (data && (data[0] == 'F' || data[0] == 'C') &&
2914 data[1] == 'W' && data[2] == 'S') {
2915 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SWF_CAPS);
2919 /*** image/jpeg ***/
2921 #define JPEG_MARKER_IS_START_OF_FRAME(x) \
2922 ((x)>=0xc0 && (x) <= 0xcf && (x)!=0xc4 && (x)!=0xc8 && (x)!=0xcc)
2924 static GstStaticCaps jpeg_caps = GST_STATIC_CAPS ("image/jpeg");
2926 #define JPEG_CAPS (gst_static_caps_get(&jpeg_caps))
2928 jpeg_type_find (GstTypeFind * tf, gpointer unused)
2930 GstTypeFindProbability prob = GST_TYPE_FIND_POSSIBLE;
2931 DataScanCtx c = { 0, NULL, 0 };
2935 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 2)))
2938 if (c.data[0] != 0xff || c.data[1] != 0xd8)
2942 data_scan_ctx_advance (tf, &c, 2);
2944 caps = gst_caps_copy (JPEG_CAPS);
2946 while (data_scan_ctx_ensure_data (tf, &c, 4) && c.offset < (200 * 1024)) {
2950 if (c.data[0] != 0xff)
2954 if (G_UNLIKELY (marker == 0xff)) {
2955 data_scan_ctx_advance (tf, &c, 1);
2959 data_scan_ctx_advance (tf, &c, 2);
2961 /* we assume all markers we'll see before SOF have a payload length; if
2962 * that's not the case we'll just detect a false sync and bail out, but
2963 * still report POSSIBLE probability */
2964 len = GST_READ_UINT16_BE (c.data);
2966 GST_LOG ("possible JPEG marker 0x%02x (@0x%04x), segment length %u",
2967 marker, (guint) c.offset, len);
2969 if (!data_scan_ctx_ensure_data (tf, &c, len))
2972 if (marker == 0xc4 || /* DEFINE_HUFFMAN_TABLES */
2973 marker == 0xcc || /* DEFINE_ARITHMETIC_CONDITIONING */
2974 marker == 0xdb || /* DEFINE_QUANTIZATION_TABLES */
2975 marker == 0xdd || /* DEFINE_RESTART_INTERVAL */
2976 marker == 0xfe) { /* COMMENT */
2977 data_scan_ctx_advance (tf, &c, len);
2979 } else if (marker == 0xe0 && len >= (2 + 4) && /* APP0 */
2980 data_scan_ctx_memcmp (tf, &c, 2, "JFIF", 4)) {
2981 GST_LOG ("found JFIF tag");
2982 prob = GST_TYPE_FIND_MAXIMUM;
2983 data_scan_ctx_advance (tf, &c, len);
2985 /* we continue until we find a start of frame marker */
2986 } else if (marker == 0xe1 && len >= (2 + 4) && /* APP1 */
2987 data_scan_ctx_memcmp (tf, &c, 2, "Exif", 4)) {
2988 GST_LOG ("found Exif tag");
2989 prob = GST_TYPE_FIND_MAXIMUM;
2990 data_scan_ctx_advance (tf, &c, len);
2992 /* we continue until we find a start of frame marker */
2993 } else if (marker >= 0xe0 && marker <= 0xef) { /* APPn */
2994 data_scan_ctx_advance (tf, &c, len);
2996 } else if (JPEG_MARKER_IS_START_OF_FRAME (marker) && len >= (2 + 8)) {
2999 h = GST_READ_UINT16_BE (c.data + 2 + 1);
3000 w = GST_READ_UINT16_BE (c.data + 2 + 1 + 2);
3001 if (h == 0 || w == 0) {
3002 GST_WARNING ("bad width %u and/or height %u in SOF header", w, h);
3006 GST_LOG ("SOF at offset %" G_GUINT64_FORMAT ", num_markers=%d, "
3007 "WxH=%dx%d", c.offset - 2, num_markers, w, h);
3009 if (num_markers >= 5 || prob == GST_TYPE_FIND_MAXIMUM)
3010 prob = GST_TYPE_FIND_MAXIMUM;
3012 prob = GST_TYPE_FIND_LIKELY;
3014 gst_caps_set_simple (caps, "width", G_TYPE_INT, w,
3015 "height", G_TYPE_INT, h, NULL);
3018 GST_WARNING ("bad length or unexpected JPEG marker 0xff 0x%02x", marker);
3023 gst_type_find_suggest (tf, prob, caps);
3024 gst_caps_unref (caps);
3029 static GstStaticCaps bmp_caps = GST_STATIC_CAPS ("image/bmp");
3031 #define BMP_CAPS (gst_static_caps_get(&bmp_caps))
3033 bmp_type_find (GstTypeFind * tf, gpointer unused)
3035 DataScanCtx c = { 0, NULL, 0 };
3036 guint32 struct_size, w, h, planes, bpp;
3038 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 54)))
3041 if (c.data[0] != 'B' || c.data[1] != 'M')
3044 /* skip marker + size */
3045 data_scan_ctx_advance (tf, &c, 2 + 4);
3047 /* reserved, must be 0 */
3048 if (c.data[0] != 0 || c.data[1] != 0 || c.data[2] != 0 || c.data[3] != 0)
3051 data_scan_ctx_advance (tf, &c, 2 + 2);
3053 /* offset to start of image data in bytes (check for sanity) */
3054 GST_LOG ("offset=%u", GST_READ_UINT32_LE (c.data));
3055 if (GST_READ_UINT32_LE (c.data) > (10 * 1024 * 1024))
3058 struct_size = GST_READ_UINT32_LE (c.data + 4);
3059 GST_LOG ("struct_size=%u", struct_size);
3061 data_scan_ctx_advance (tf, &c, 4 + 4);
3063 if (struct_size == 0x0C) {
3064 w = GST_READ_UINT16_LE (c.data);
3065 h = GST_READ_UINT16_LE (c.data + 2);
3066 planes = GST_READ_UINT16_LE (c.data + 2 + 2);
3067 bpp = GST_READ_UINT16_LE (c.data + 2 + 2 + 2);
3068 } else if (struct_size == 40 || struct_size == 64 || struct_size == 108
3069 || struct_size == 124 || struct_size == 0xF0) {
3070 w = GST_READ_UINT32_LE (c.data);
3071 h = GST_READ_UINT32_LE (c.data + 4);
3072 planes = GST_READ_UINT16_LE (c.data + 4 + 4);
3073 bpp = GST_READ_UINT16_LE (c.data + 4 + 4 + 2);
3078 /* image sizes sanity check */
3079 GST_LOG ("w=%u, h=%u, planes=%u, bpp=%u", w, h, planes, bpp);
3080 if (w == 0 || w > 0xfffff || h == 0 || h > 0xfffff || planes != 1 ||
3081 (bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32))
3084 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM, "image/bmp",
3085 "width", G_TYPE_INT, w, "height", G_TYPE_INT, h, "bpp", G_TYPE_INT, bpp,
3089 /*** image/tiff ***/
3090 static GstStaticCaps tiff_caps = GST_STATIC_CAPS ("image/tiff, "
3091 "endianness = (int) { BIG_ENDIAN, LITTLE_ENDIAN }");
3092 #define TIFF_CAPS (gst_static_caps_get(&tiff_caps))
3093 static GstStaticCaps tiff_be_caps = GST_STATIC_CAPS ("image/tiff, "
3094 "endianness = (int) BIG_ENDIAN");
3095 #define TIFF_BE_CAPS (gst_static_caps_get(&tiff_be_caps))
3096 static GstStaticCaps tiff_le_caps = GST_STATIC_CAPS ("image/tiff, "
3097 "endianness = (int) LITTLE_ENDIAN");
3098 #define TIFF_LE_CAPS (gst_static_caps_get(&tiff_le_caps))
3100 tiff_type_find (GstTypeFind * tf, gpointer ununsed)
3102 const guint8 *data = gst_type_find_peek (tf, 0, 8);
3103 guint8 le_header[4] = { 0x49, 0x49, 0x2A, 0x00 };
3104 guint8 be_header[4] = { 0x4D, 0x4D, 0x00, 0x2A };
3107 if (memcmp (data, le_header, 4) == 0) {
3108 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, TIFF_LE_CAPS);
3109 } else if (memcmp (data, be_header, 4) == 0) {
3110 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, TIFF_BE_CAPS);
3117 static GstStaticCaps pnm_caps = GST_STATIC_CAPS ("image/x-portable-bitmap; "
3118 "image/x-portable-graymap; image/x-portable-pixmap; "
3119 "image/x-portable-anymap");
3121 #define PNM_CAPS (gst_static_caps_get(&pnm_caps))
3123 #define IS_PNM_WHITESPACE(c) \
3124 ((c) == ' ' || (c) == '\r' || (c) == '\n' || (c) == 't')
3127 pnm_type_find (GstTypeFind * tf, gpointer ununsed)
3129 const gchar *media_type = NULL;
3130 DataScanCtx c = { 0, NULL, 0 };
3133 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 16)))
3136 /* see http://en.wikipedia.org/wiki/Netpbm_format */
3137 if (c.data[0] != 'P' || c.data[1] < '1' || c.data[1] > '7' ||
3138 !IS_PNM_WHITESPACE (c.data[2]) ||
3139 (c.data[3] != '#' && c.data[3] < '0' && c.data[3] > '9'))
3142 switch (c.data[1]) {
3144 media_type = "image/x-portable-bitmap"; /* ASCII */
3147 media_type = "image/x-portable-graymap"; /* ASCII */
3150 media_type = "image/x-portable-pixmap"; /* ASCII */
3153 media_type = "image/x-portable-bitmap"; /* Raw */
3156 media_type = "image/x-portable-graymap"; /* Raw */
3159 media_type = "image/x-portable-pixmap"; /* Raw */
3162 media_type = "image/x-portable-anymap";
3165 g_return_if_reached ();
3168 /* try to extract width and height as well */
3169 if (c.data[1] != '7') {
3170 gchar s[64] = { 0, }
3173 /* need to skip any comment lines first */
3174 data_scan_ctx_advance (tf, &c, 3);
3175 while (c.data[0] == '#') { /* we know there's still data left */
3176 data_scan_ctx_advance (tf, &c, 1);
3177 while (c.data[0] != '\n' && c.data[0] != '\r') {
3178 if (!data_scan_ctx_ensure_data (tf, &c, 4))
3180 data_scan_ctx_advance (tf, &c, 1);
3182 data_scan_ctx_advance (tf, &c, 1);
3183 GST_LOG ("skipped comment line in PNM header");
3186 if (!data_scan_ctx_ensure_data (tf, &c, 32) &&
3187 !data_scan_ctx_ensure_data (tf, &c, 4)) {
3191 /* need to NUL-terminate data for sscanf */
3192 memcpy (s, c.data, MIN (sizeof (s) - 1, c.size));
3193 if (sscanf (s, "%u%c%u%c", &w, &sep1, &h, &sep2) == 4 &&
3194 IS_PNM_WHITESPACE (sep1) && IS_PNM_WHITESPACE (sep2) &&
3195 w > 0 && w < G_MAXINT && h > 0 && h < G_MAXINT) {
3196 GST_LOG ("extracted PNM width and height: %dx%d", w, h);
3202 /* FIXME: extract width + height for anymaps too */
3205 if (w > 0 && h > 0) {
3206 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM, media_type,
3207 "width", G_TYPE_INT, w, "height", G_TYPE_INT, h, NULL);
3209 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_LIKELY, media_type, NULL);
3213 static GstStaticCaps sds_caps = GST_STATIC_CAPS ("audio/x-sds");
3215 #define SDS_CAPS (gst_static_caps_get(&sds_caps))
3217 sds_type_find (GstTypeFind * tf, gpointer ununsed)
3219 const guint8 *data = gst_type_find_peek (tf, 0, 4);
3220 guint8 mask[4] = { 0xFF, 0xFF, 0x80, 0xFF };
3221 guint8 match[4] = { 0xF0, 0x7E, 0, 0x01 };
3225 for (x = 0; x < 4; x++) {
3226 if ((data[x] & mask[x]) != match[x]) {
3230 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SDS_CAPS);
3234 static GstStaticCaps ircam_caps = GST_STATIC_CAPS ("audio/x-ircam");
3236 #define IRCAM_CAPS (gst_static_caps_get(&ircam_caps))
3238 ircam_type_find (GstTypeFind * tf, gpointer ununsed)
3240 const guint8 *data = gst_type_find_peek (tf, 0, 4);
3241 guint8 mask[4] = { 0xFF, 0xFF, 0xF8, 0xFF };
3242 guint8 match[4] = { 0x64, 0xA3, 0x00, 0x00 };
3244 gboolean matched = TRUE;
3249 for (x = 0; x < 4; x++) {
3250 if ((data[x] & mask[x]) != match[x]) {
3255 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, IRCAM_CAPS);
3258 /* now try the reverse version */
3260 for (x = 0; x < 4; x++) {
3261 if ((data[x] & mask[3 - x]) != match[3 - x]) {
3267 /* EBML typefind helper */
3269 ebml_check_header (GstTypeFind * tf, const gchar * doctype, int doctype_len)
3271 /* 4 bytes for EBML ID, 1 byte for header length identifier */
3272 const guint8 *data = gst_type_find_peek (tf, 0, 4 + 1);
3273 gint len_mask = 0x80, size = 1, n = 1, total;
3279 if (data[0] != 0x1A || data[1] != 0x45 || data[2] != 0xDF || data[3] != 0xA3)
3282 /* length of header */
3284 while (size <= 8 && !(total & len_mask)) {
3290 total &= (len_mask - 1);
3292 total = (total << 8) | data[4 + n++];
3294 /* get new data for full header, 4 bytes for EBML ID,
3295 * EBML length tag and the actual header */
3296 data = gst_type_find_peek (tf, 0, 4 + size + total);
3300 /* only check doctype if asked to do so */
3301 if (doctype == NULL || doctype_len == 0)
3304 /* the header must contain the doctype. For now, we don't parse the
3305 * whole header but simply check for the availability of that array
3306 * of characters inside the header. Not fully fool-proof, but good
3308 for (n = 4 + size; n <= 4 + size + total - doctype_len; n++)
3309 if (!memcmp (&data[n], doctype, doctype_len))
3315 /*** video/x-matroska ***/
3316 static GstStaticCaps matroska_caps = GST_STATIC_CAPS ("video/x-matroska");
3318 #define MATROSKA_CAPS (gst_static_caps_get(&matroska_caps))
3320 matroska_type_find (GstTypeFind * tf, gpointer ununsed)
3322 if (ebml_check_header (tf, "matroska", 8))
3323 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MATROSKA_CAPS);
3324 else if (ebml_check_header (tf, NULL, 0))
3325 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MATROSKA_CAPS);
3328 /*** video/webm ***/
3329 static GstStaticCaps webm_caps = GST_STATIC_CAPS ("video/webm");
3331 #define WEBM_CAPS (gst_static_caps_get(&webm_caps))
3333 webm_type_find (GstTypeFind * tf, gpointer ununsed)
3335 if (ebml_check_header (tf, "webm", 4))
3336 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, WEBM_CAPS);
3339 /*** application/mxf ***/
3340 static GstStaticCaps mxf_caps = GST_STATIC_CAPS ("application/mxf");
3342 #define MXF_MAX_PROBE_LENGTH (1024 * 64)
3343 #define MXF_CAPS (gst_static_caps_get(&mxf_caps))
3346 * MXF files start with a header partition pack key of 16 bytes which is defined
3347 * at SMPTE-377M 6.1. Before this there can be up to 64K of run-in which _must_
3348 * not contain the partition pack key.
3351 mxf_type_find (GstTypeFind * tf, gpointer ununsed)
3353 static const guint8 partition_pack_key[] =
3354 { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x05, 0x01, 0x01, 0x0d, 0x01, 0x02, 0x01,
3357 DataScanCtx c = { 0, NULL, 0 };
3359 while (c.offset <= MXF_MAX_PROBE_LENGTH) {
3361 if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 1024)))
3364 /* look over in chunks of 1kbytes to avoid too much overhead */
3366 for (i = 0; i < 1024 - 16; i++) {
3367 /* Check first byte before calling more expensive memcmp function */
3368 if (G_UNLIKELY (c.data[i] == 0x06
3369 && memcmp (c.data + i, partition_pack_key, 13) == 0)) {
3370 /* Header partition pack? */
3371 if (c.data[i + 13] != 0x02)
3374 /* Partition status */
3375 if (c.data[i + 14] >= 0x05)
3378 /* Reserved, must be 0x00 */
3379 if (c.data[i + 15] != 0x00)
3382 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MXF_CAPS);
3388 data_scan_ctx_advance (tf, &c, 1024 - 16);
3392 /*** video/x-dv ***/
3394 static GstStaticCaps dv_caps = GST_STATIC_CAPS ("video/x-dv, "
3395 "systemstream = (boolean) true");
3396 #define DV_CAPS (gst_static_caps_get(&dv_caps))
3398 dv_type_find (GstTypeFind * tf, gpointer private)
3402 data = gst_type_find_peek (tf, 0, 5);
3404 /* check for DIF and DV flag */
3405 if (data && (data[0] == 0x1f) && (data[1] == 0x07) && (data[2] == 0x00)) {
3406 const gchar *format;
3408 if (data[3] & 0x80) {
3414 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM, "video/x-dv",
3415 "systemstream", G_TYPE_BOOLEAN, TRUE,
3416 "format", G_TYPE_STRING, format, NULL);
3421 /*** application/ogg and application/x-annodex ***/
3422 static GstStaticCaps ogg_caps = GST_STATIC_CAPS ("application/ogg");
3423 static GstStaticCaps annodex_caps = GST_STATIC_CAPS ("application/x-annodex");
3424 static GstStaticCaps ogg_annodex_caps =
3425 GST_STATIC_CAPS ("application/ogg;application/x-annodex");
3427 #define OGGANX_CAPS (gst_static_caps_get(&ogg_annodex_caps))
3430 ogganx_type_find (GstTypeFind * tf, gpointer private)
3432 const guint8 *data = gst_type_find_peek (tf, 0, 4);
3434 if ((data != NULL) && (memcmp (data, "OggS", 4) == 0)) {
3436 /* Check for an annodex fishbone header */
3437 data = gst_type_find_peek (tf, 28, 8);
3438 if (data && memcmp (data, "fishead\0", 8) == 0)
3439 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,
3440 gst_static_caps_get (&annodex_caps));
3442 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,
3443 gst_static_caps_get (&ogg_caps));
3447 /*** audio/x-vorbis ***/
3448 static GstStaticCaps vorbis_caps = GST_STATIC_CAPS ("audio/x-vorbis");
3450 #define VORBIS_CAPS (gst_static_caps_get(&vorbis_caps))
3452 vorbis_type_find (GstTypeFind * tf, gpointer private)
3454 const guint8 *data = gst_type_find_peek (tf, 0, 30);
3460 /* 1 byte packet type (identification=0x01)
3461 6 byte string "vorbis"
3462 4 byte vorbis version */
3463 if (memcmp (data, "\001vorbis\000\000\000\000", 11) != 0)
3466 /* 1 byte channels must be != 0 */
3470 /* 4 byte samplerate must be != 0 */
3471 if (GST_READ_UINT32_LE (data) == 0)
3474 /* blocksize checks */
3475 blocksize_0 = data[0] & 0x0F;
3476 blocksize_1 = (data[0] & 0xF0) >> 4;
3477 if (blocksize_0 > blocksize_1)
3479 if (blocksize_0 < 6 || blocksize_0 > 13)
3481 if (blocksize_1 < 6 || blocksize_1 > 13)
3485 if ((data[0] & 0x01) != 1)
3487 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, VORBIS_CAPS);
3491 /*** video/x-theora ***/
3493 static GstStaticCaps theora_caps = GST_STATIC_CAPS ("video/x-theora");
3495 #define THEORA_CAPS (gst_static_caps_get(&theora_caps))
3497 theora_type_find (GstTypeFind * tf, gpointer private)
3499 const guint8 *data = gst_type_find_peek (tf, 0, 7); //42);
3502 if (data[0] != 0x80)
3504 if (memcmp (&data[1], "theora", 6) != 0)
3506 /* FIXME: make this more reliable when specs are out */
3508 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, THEORA_CAPS);
3514 kate_type_find (GstTypeFind * tf, gpointer private)
3516 const guint8 *data = gst_type_find_peek (tf, 0, 64);
3517 gchar category[16] = { 0, };
3519 if (G_UNLIKELY (data == NULL))
3522 /* see: http://wiki.xiph.org/index.php/OggKate#Format_specification */
3523 if (G_LIKELY (memcmp (data, "\200kate\0\0\0", 8) != 0))
3526 /* make sure we always have a NUL-terminated string */
3527 memcpy (category, data + 48, 15);
3528 GST_LOG ("kate category: %s", category);
3529 /* canonical categories for subtitles: subtitles, spu-subtitles, SUB, K-SPU */
3530 if (strcmp (category, "subtitles") == 0 || strcmp (category, "SUB") == 0 ||
3531 strcmp (category, "spu-subtitles") == 0 ||
3532 strcmp (category, "K-SPU") == 0) {
3533 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM,
3534 "subtitle/x-kate", NULL);
3536 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM,
3537 "application/x-kate", NULL);
3541 /*** application/x-ogm-video or audio***/
3543 static GstStaticCaps ogmvideo_caps =
3544 GST_STATIC_CAPS ("application/x-ogm-video");
3545 #define OGMVIDEO_CAPS (gst_static_caps_get(&ogmvideo_caps))
3547 ogmvideo_type_find (GstTypeFind * tf, gpointer private)
3549 const guint8 *data = gst_type_find_peek (tf, 0, 9);
3552 if (memcmp (data, "\001video\000\000\000", 9) != 0)
3554 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGMVIDEO_CAPS);
3558 static GstStaticCaps ogmaudio_caps =
3559 GST_STATIC_CAPS ("application/x-ogm-audio");
3560 #define OGMAUDIO_CAPS (gst_static_caps_get(&ogmaudio_caps))
3562 ogmaudio_type_find (GstTypeFind * tf, gpointer private)
3564 const guint8 *data = gst_type_find_peek (tf, 0, 9);
3567 if (memcmp (data, "\001audio\000\000\000", 9) != 0)
3569 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGMAUDIO_CAPS);
3573 static GstStaticCaps ogmtext_caps = GST_STATIC_CAPS ("application/x-ogm-text");
3575 #define OGMTEXT_CAPS (gst_static_caps_get(&ogmtext_caps))
3577 ogmtext_type_find (GstTypeFind * tf, gpointer private)
3579 const guint8 *data = gst_type_find_peek (tf, 0, 9);
3582 if (memcmp (data, "\001text\000\000\000\000", 9) != 0)
3584 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGMTEXT_CAPS);
3588 /*** audio/x-speex ***/
3590 static GstStaticCaps speex_caps = GST_STATIC_CAPS ("audio/x-speex");
3592 #define SPEEX_CAPS (gst_static_caps_get(&speex_caps))
3594 speex_type_find (GstTypeFind * tf, gpointer private)
3596 const guint8 *data = gst_type_find_peek (tf, 0, 80);
3599 /* 8 byte string "Speex "
3600 24 byte speex version string + int */
3601 if (memcmp (data, "Speex ", 8) != 0)
3605 /* 4 byte header size >= 80 */
3606 if (GST_READ_UINT32_LE (data) < 80)
3610 /* 4 byte sample rate <= 48000 */
3611 if (GST_READ_UINT32_LE (data) > 48000)
3615 /* currently there are only 3 speex modes. */
3616 if (GST_READ_UINT32_LE (data) > 3)
3620 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SPEEX_CAPS);
3624 /*** audio/x-celt ***/
3626 static GstStaticCaps celt_caps = GST_STATIC_CAPS ("audio/x-celt");
3628 #define CELT_CAPS (gst_static_caps_get(&celt_caps))
3630 celt_type_find (GstTypeFind * tf, gpointer private)
3632 const guint8 *data = gst_type_find_peek (tf, 0, 8);
3635 /* 8 byte string "CELT " */
3636 if (memcmp (data, "CELT ", 8) != 0)
3639 /* TODO: Check other values of the CELT header */
3640 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, CELT_CAPS);
3644 /*** application/x-ogg-skeleton ***/
3645 static GstStaticCaps ogg_skeleton_caps =
3646 GST_STATIC_CAPS ("application/x-ogg-skeleton, parsed=(boolean)FALSE");
3647 #define OGG_SKELETON_CAPS (gst_static_caps_get(&ogg_skeleton_caps))
3649 oggskel_type_find (GstTypeFind * tf, gpointer private)
3651 const guint8 *data = gst_type_find_peek (tf, 0, 12);
3654 /* 8 byte string "fishead\0" for the ogg skeleton stream */
3655 if (memcmp (data, "fishead\0", 8) != 0)
3659 /* Require that the header contains version 3.0 */
3660 if (GST_READ_UINT16_LE (data) != 3)
3663 if (GST_READ_UINT16_LE (data) != 0)
3666 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGG_SKELETON_CAPS);
3670 static GstStaticCaps cmml_caps = GST_STATIC_CAPS ("text/x-cmml");
3672 #define CMML_CAPS (gst_static_caps_get(&cmml_caps))
3674 cmml_type_find (GstTypeFind * tf, gpointer private)
3676 /* Header is 12 bytes minimum (though we don't check the minor version */
3677 const guint8 *data = gst_type_find_peek (tf, 0, 12);
3681 /* 8 byte string "CMML\0\0\0\0" for the magic number */
3682 if (memcmp (data, "CMML\0\0\0\0", 8) != 0)
3686 /* Require that the header contains at least version 2.0 */
3687 if (GST_READ_UINT16_LE (data) < 2)
3690 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, CMML_CAPS);
3694 /*** application/x-tar ***/
3696 static GstStaticCaps tar_caps = GST_STATIC_CAPS ("application/x-tar");
3698 #define TAR_CAPS (gst_static_caps_get(&tar_caps))
3699 #define OLDGNU_MAGIC "ustar " /* 7 chars and a NUL */
3700 #define NEWGNU_MAGIC "ustar" /* 5 chars and a NUL */
3702 tar_type_find (GstTypeFind * tf, gpointer unused)
3704 const guint8 *data = gst_type_find_peek (tf, 257, 8);
3706 /* of course we are not certain, but we don't want other typefind funcs
3707 * to detect formats of files within the tar archive, e.g. mp3s */
3709 if (memcmp (data, OLDGNU_MAGIC, 8) == 0) { /* sic */
3710 gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, TAR_CAPS);
3711 } else if (memcmp (data, NEWGNU_MAGIC, 6) == 0 && /* sic */
3712 g_ascii_isdigit (data[6]) && g_ascii_isdigit (data[7])) {
3713 gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, TAR_CAPS);
3718 /*** application/x-ar ***/
3720 static GstStaticCaps ar_caps = GST_STATIC_CAPS ("application/x-ar");
3722 #define AR_CAPS (gst_static_caps_get(&ar_caps))
3724 ar_type_find (GstTypeFind * tf, gpointer unused)
3726 const guint8 *data = gst_type_find_peek (tf, 0, 24);
3728 if (data && memcmp (data, "!<arch>", 7) == 0) {
3731 for (i = 7; i < 24; ++i) {
3732 if (!g_ascii_isprint (data[i]) && data[i] != '\n') {
3733 gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, AR_CAPS);
3737 gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, AR_CAPS);
3741 /*** audio/x-au ***/
3743 /* NOTE: we cannot replace this function with TYPE_FIND_REGISTER_START_WITH,
3744 * as it is only possible to register one typefind factory per 'name'
3745 * (which is in this case the caps), and the first one would be replaced by
3746 * the second one. */
3747 static GstStaticCaps au_caps = GST_STATIC_CAPS ("audio/x-au");
3749 #define AU_CAPS (gst_static_caps_get(&au_caps))
3751 au_type_find (GstTypeFind * tf, gpointer unused)
3753 const guint8 *data = gst_type_find_peek (tf, 0, 4);
3756 if (memcmp (data, ".snd", 4) == 0 || memcmp (data, "dns.", 4) == 0) {
3757 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, AU_CAPS);
3763 /*** video/x-nuv ***/
3765 /* NOTE: we cannot replace this function with TYPE_FIND_REGISTER_START_WITH,
3766 * as it is only possible to register one typefind factory per 'name'
3767 * (which is in this case the caps), and the first one would be replaced by
3768 * the second one. */
3769 static GstStaticCaps nuv_caps = GST_STATIC_CAPS ("video/x-nuv");
3771 #define NUV_CAPS (gst_static_caps_get(&nuv_caps))
3773 nuv_type_find (GstTypeFind * tf, gpointer unused)
3775 const guint8 *data = gst_type_find_peek (tf, 0, 11);
3778 if (memcmp (data, "MythTVVideo", 11) == 0
3779 || memcmp (data, "NuppelVideo", 11) == 0) {
3780 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, NUV_CAPS);
3785 /*** audio/x-paris ***/
3786 /* NOTE: do not replace this function with two TYPE_FIND_REGISTER_START_WITH */
3787 static GstStaticCaps paris_caps = GST_STATIC_CAPS ("audio/x-paris");
3789 #define PARIS_CAPS (gst_static_caps_get(&paris_caps))
3791 paris_type_find (GstTypeFind * tf, gpointer unused)
3793 const guint8 *data = gst_type_find_peek (tf, 0, 4);
3796 if (memcmp (data, " paf", 4) == 0 || memcmp (data, "fap ", 4) == 0) {
3797 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, PARIS_CAPS);
3802 /*** audio/iLBC-sh ***/
3803 /* NOTE: do not replace this function with two TYPE_FIND_REGISTER_START_WITH */
3804 static GstStaticCaps ilbc_caps = GST_STATIC_CAPS ("audio/iLBC-sh");
3806 #define ILBC_CAPS (gst_static_caps_get(&ilbc_caps))
3808 ilbc_type_find (GstTypeFind * tf, gpointer unused)
3810 const guint8 *data = gst_type_find_peek (tf, 0, 8);
3813 if (memcmp (data, "#!iLBC30", 8) == 0 || memcmp (data, "#!iLBC20", 8) == 0) {
3814 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, ILBC_CAPS);
3819 /*** application/x-ms-dos-executable ***/
3821 static GstStaticCaps msdos_caps =
3822 GST_STATIC_CAPS ("application/x-ms-dos-executable");
3823 #define MSDOS_CAPS (gst_static_caps_get(&msdos_caps))
3824 /* see http://www.madchat.org/vxdevl/papers/winsys/pefile/pefile.htm */
3826 msdos_type_find (GstTypeFind * tf, gpointer unused)
3828 const guint8 *data = gst_type_find_peek (tf, 0, 64);
3830 if (data && data[0] == 'M' && data[1] == 'Z' &&
3831 GST_READ_UINT16_LE (data + 8) == 4) {
3832 guint32 pe_offset = GST_READ_UINT32_LE (data + 60);
3834 data = gst_type_find_peek (tf, pe_offset, 2);
3835 if (data && data[0] == 'P' && data[1] == 'E') {
3836 gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, MSDOS_CAPS);
3841 /*** application/x-mmsh ***/
3843 static GstStaticCaps mmsh_caps = GST_STATIC_CAPS ("application/x-mmsh");
3845 #define MMSH_CAPS gst_static_caps_get(&mmsh_caps)
3847 /* This is to recognise mssh-over-http */
3849 mmsh_type_find (GstTypeFind * tf, gpointer unused)
3851 static const guint8 asf_marker[16] = { 0x30, 0x26, 0xb2, 0x75, 0x8e, 0x66,
3852 0xcf, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c
3857 data = gst_type_find_peek (tf, 0, 2 + 2 + 4 + 2 + 2 + 16);
3858 if (data && data[0] == 0x24 && data[1] == 0x48 &&
3859 GST_READ_UINT16_LE (data + 2) > 2 + 2 + 4 + 2 + 2 + 16 &&
3860 memcmp (data + 2 + 2 + 4 + 2 + 2, asf_marker, 16) == 0) {
3861 gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MMSH_CAPS);
3865 /*** video/x-dirac ***/
3867 /* NOTE: we cannot replace this function with TYPE_FIND_REGISTER_START_WITH,
3868 * as it is only possible to register one typefind factory per 'name'
3869 * (which is in this case the caps), and the first one would be replaced by
3870 * the second one. */
3871 static GstStaticCaps dirac_caps = GST_STATIC_CAPS ("video/x-dirac");
3873 #define DIRAC_CAPS (gst_static_caps_get(&dirac_caps))
3875 dirac_type_find (GstTypeFind * tf, gpointer unused)
3877 const guint8 *data = gst_type_find_peek (tf, 0, 8);
3880 if (memcmp (data, "BBCD", 4) == 0 || memcmp (data, "KW-DIRAC", 8) == 0) {
3881 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, DIRAC_CAPS);
3886 /*** video/vivo ***/
3888 static GstStaticCaps vivo_caps = GST_STATIC_CAPS ("video/vivo");
3890 #define VIVO_CAPS gst_static_caps_get(&vivo_caps)
3893 vivo_type_find (GstTypeFind * tf, gpointer unused)
3895 static const guint8 vivo_marker[] = { 'V', 'e', 'r', 's', 'i', 'o', 'n',
3896 ':', 'V', 'i', 'v', 'o', '/'
3901 data = gst_type_find_peek (tf, 0, 1024);
3902 if (data == NULL || data[0] != 0x00)
3905 if ((data[1] & 0x80)) {
3906 if ((data[2] & 0x80))
3908 hdr_len = ((guint) (data[1] & 0x7f)) << 7;
3918 /* 1008 = 1022 - strlen ("Version:Vivo/") - 1 */
3919 while (pos < 1008 && data[pos] == '\r' && data[pos + 1] == '\n')
3922 if (memcmp (data + pos, vivo_marker, sizeof (vivo_marker)) == 0) {
3923 gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, VIVO_CAPS);
3927 /*** XDG MIME typefinder (to avoid false positives mostly) ***/
3931 xdgmime_typefind (GstTypeFind * find, gpointer user_data)
3934 gsize length = 16384;
3939 if ((tf_length = gst_type_find_get_length (find)) > 0)
3940 length = MIN (length, tf_length);
3942 if ((data = gst_type_find_peek (find, 0, length)) == NULL)
3945 tmp = g_content_type_guess (NULL, data, length, NULL);
3946 if (tmp == NULL || g_content_type_is_unknown (tmp)) {
3951 mimetype = g_content_type_get_mime_type (tmp);
3954 if (mimetype == NULL)
3957 GST_DEBUG ("Got mimetype '%s'", mimetype);
3959 /* Ignore audio/video types:
3960 * - our own typefinders in -base are likely to be better at this
3961 * (and if they're not, we really want to fix them, that's why we don't
3962 * report xdg-detected audio/video types at all, not even with a low
3964 * - we want to detect GStreamer media types and not MIME types
3965 * - the purpose of this xdg mime finder is mainly to prevent false
3966 * positives of non-media formats, not to typefind audio/video formats */
3967 if (g_str_has_prefix (mimetype, "audio/") ||
3968 g_str_has_prefix (mimetype, "video/")) {
3969 GST_LOG ("Ignoring audio/video mime type");
3974 /* Again, we mainly want the xdg typefinding to prevent false-positives on
3975 * non-media formats, so suggest the type with a probability that trumps
3976 * uncertain results of our typefinders, but not more than that. */
3977 GST_LOG ("Suggesting '%s' with probability POSSIBLE", mimetype);
3978 gst_type_find_suggest_simple (find, GST_TYPE_FIND_POSSIBLE, mimetype, NULL);
3981 #endif /* USE_GIO */
3983 /*** Windows icon typefinder (to avoid false positives mostly) ***/
3986 windows_icon_typefind (GstTypeFind * find, gpointer user_data)
3990 guint16 type, nimages;
3991 gint32 size, offset;
3993 datalen = gst_type_find_get_length (find);
3994 if ((data = gst_type_find_peek (find, 0, 6)) == NULL)
3997 /* header - simple and not enough to rely on it alone */
3998 if (GST_READ_UINT16_LE (data) != 0)
4000 type = GST_READ_UINT16_LE (data + 2);
4001 if (type != 1 && type != 2)
4003 nimages = GST_READ_UINT16_LE (data + 4);
4004 if (nimages == 0) /* we can assume we can't have an empty image file ? */
4008 if (data[6 + 3] != 0)
4011 guint16 planes = GST_READ_UINT16_LE (data + 6 + 4);
4015 size = GST_READ_UINT32_LE (data + 6 + 8);
4016 offset = GST_READ_UINT32_LE (data + 6 + 12);
4017 if (offset < 0 || size <= 0 || size >= datalen || offset >= datalen
4018 || size + offset > datalen)
4021 gst_type_find_suggest_simple (find, GST_TYPE_FIND_NEARLY_CERTAIN,
4022 "image/x-icon", NULL);
4025 /*** WAP WBMP typefinder ***/
4028 wbmp_typefind (GstTypeFind * find, gpointer user_data)
4034 /* http://en.wikipedia.org/wiki/Wireless_Application_Protocol_Bitmap_Format */
4035 datalen = gst_type_find_get_length (find);
4039 data = gst_type_find_peek (find, 0, 5);
4043 /* want 0x00 0x00 at start */
4044 if (*data++ != 0 || *data++ != 0)
4047 /* min header size */
4050 /* let's assume max width/height is 65536 */
4053 w = (w << 8) | *data++;
4057 data = gst_type_find_peek (find, 4, 2);
4063 h = (h << 8) | *data++;
4069 if (w == 0 || h == 0)
4072 /* now add bitmap size */
4073 size += h * (GST_ROUND_UP_8 (w) / 8);
4075 if (datalen == size) {
4076 gst_type_find_suggest_simple (find, GST_TYPE_FIND_POSSIBLE - 10,
4077 "image/vnd.wap.wbmp", NULL);
4081 /*** DEGAS Atari images (also to avoid false positives, see #625129) ***/
4083 degas_type_find (GstTypeFind * tf, gpointer private)
4085 /* No magic, but it should have a fixed size and a few invalid values */
4086 /* http://www.fileformat.info/format/atari/spec/6ecf9f6eb5be494284a47feb8a214687/view.htm */
4092 len = gst_type_find_get_length (tf);
4093 if (len < 34) /* smallest header of the lot */
4095 data = gst_type_find_peek (tf, 0, 4);
4096 if (G_UNLIKELY (data == NULL))
4098 resolution = GST_READ_UINT16_BE (data);
4100 /* could be DEGAS */
4101 if (resolution <= 2)
4102 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_POSSIBLE + 5,
4103 "image/x-degas", NULL);
4104 } else if (len == 32066) {
4105 /* could be DEGAS Elite */
4106 if (resolution <= 2) {
4107 data = gst_type_find_peek (tf, len - 16, 8);
4108 if (G_UNLIKELY (data == NULL))
4110 for (n = 0; n < 4; n++) {
4111 if (GST_READ_UINT16_BE (data + n * 2) > 2)
4114 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_POSSIBLE + 5,
4115 "image/x-degas", NULL);
4117 } else if (len >= 66 && len < 32066) {
4118 /* could be compressed DEGAS Elite, but it's compressed and so we can't rely on size,
4119 it does have 4 16 bytes values near the end that are 0-2 though. */
4120 if ((resolution & 0x8000) && (resolution & 0x7fff) <= 2) {
4121 data = gst_type_find_peek (tf, len - 16, 8);
4122 if (G_UNLIKELY (data == NULL))
4124 for (n = 0; n < 4; n++) {
4125 if (GST_READ_UINT16_BE (data + n * 2) > 2)
4128 gst_type_find_suggest_simple (tf, GST_TYPE_FIND_POSSIBLE + 5,
4129 "image/x-degas", NULL);
4134 /*** generic typefind for streams that have some data at a specific position***/
4145 start_with_type_find (GstTypeFind * tf, gpointer private)
4147 GstTypeFindData *start_with = (GstTypeFindData *) private;
4150 GST_LOG ("trying to find mime type %s with the first %u bytes of data",
4151 gst_structure_get_name (gst_caps_get_structure (start_with->caps, 0)),
4153 data = gst_type_find_peek (tf, 0, start_with->size);
4154 if (data && memcmp (data, start_with->data, start_with->size) == 0) {
4155 gst_type_find_suggest (tf, start_with->probability, start_with->caps);
4160 sw_data_destroy (GstTypeFindData * sw_data)
4162 if (G_LIKELY (sw_data->caps != NULL))
4163 gst_caps_unref (sw_data->caps);
4167 #define TYPE_FIND_REGISTER_START_WITH(plugin,name,rank,ext,_data,_size,_probability)\
4169 GstTypeFindData *sw_data = g_new (GstTypeFindData, 1); \
4170 sw_data->data = (const guint8 *)_data; \
4171 sw_data->size = _size; \
4172 sw_data->probability = _probability; \
4173 sw_data->caps = gst_caps_new_empty_simple (name); \
4174 if (!gst_type_find_register (plugin, name, rank, start_with_type_find,\
4175 (char **) ext, sw_data->caps, sw_data, \
4176 (GDestroyNotify) (sw_data_destroy))) { \
4177 gst_caps_unref (sw_data->caps); \
4182 /*** same for riff types ***/
4185 riff_type_find (GstTypeFind * tf, gpointer private)
4187 GstTypeFindData *riff_data = (GstTypeFindData *) private;
4188 const guint8 *data = gst_type_find_peek (tf, 0, 12);
4190 if (data && (memcmp (data, "RIFF", 4) == 0 || memcmp (data, "AVF0", 4) == 0)) {
4192 if (memcmp (data, riff_data->data, 4) == 0)
4193 gst_type_find_suggest (tf, riff_data->probability, riff_data->caps);
4197 #define TYPE_FIND_REGISTER_RIFF(plugin,name,rank,ext,_data) \
4199 GstTypeFindData *sw_data = g_new (GstTypeFindData, 1); \
4200 sw_data->data = (gpointer)_data; \
4201 sw_data->size = 4; \
4202 sw_data->probability = GST_TYPE_FIND_MAXIMUM; \
4203 sw_data->caps = gst_caps_new_empty_simple (name); \
4204 if (!gst_type_find_register (plugin, name, rank, riff_type_find, \
4205 (char **) ext, sw_data->caps, sw_data, \
4206 (GDestroyNotify) (sw_data_destroy))) { \
4207 gst_caps_unref (sw_data->caps); \
4213 /*** plugin initialization ***/
4215 #define TYPE_FIND_REGISTER(plugin,name,rank,func,ext,caps,priv,notify) \
4217 if (!gst_type_find_register (plugin, name, rank, func, (char **) ext, caps, priv, notify))\
4223 plugin_init (GstPlugin * plugin)
4225 /* can't initialize this via a struct as caps can't be statically initialized */
4227 /* note: asx/wax/wmx are XML files, asf doesn't handle them */
4228 /* FIXME-0.11: these should be const,
4229 this requires gstreamer/gst/gsttypefind::gst_type_find_register()
4230 to have define the parameter as const
4232 static const gchar *asf_exts[] = { "asf", "wm", "wma", "wmv", NULL };
4233 static const gchar *au_exts[] = { "au", "snd", NULL };
4234 static const gchar *avi_exts[] = { "avi", NULL };
4235 static const gchar *qcp_exts[] = { "qcp", NULL };
4236 static const gchar *cdxa_exts[] = { "dat", NULL };
4237 static const gchar *flac_exts[] = { "flac", NULL };
4238 static const gchar *flx_exts[] = { "flc", "fli", NULL };
4239 static const gchar *id3_exts[] =
4240 { "mp3", "mp2", "mp1", "mpga", "ogg", "flac", "tta", NULL };
4241 static const gchar *apetag_exts[] = { "mp3", "ape", "mpc", "wv", NULL };
4242 static const gchar *tta_exts[] = { "tta", NULL };
4243 static const gchar *mod_exts[] = { "669", "amf", "dsm", "gdm", "far", "imf",
4244 "it", "med", "mod", "mtm", "okt", "sam",
4245 "s3m", "stm", "stx", "ult", "xm", NULL
4247 static const gchar *mp3_exts[] = { "mp3", "mp2", "mp1", "mpga", NULL };
4248 static const gchar *ac3_exts[] = { "ac3", "eac3", NULL };
4249 static const gchar *dts_exts[] = { "dts", NULL };
4250 static const gchar *gsm_exts[] = { "gsm", NULL };
4251 static const gchar *musepack_exts[] = { "mpc", "mpp", "mp+", NULL };
4252 static const gchar *mpeg_sys_exts[] = { "mpe", "mpeg", "mpg", NULL };
4253 static const gchar *mpeg_video_exts[] = { "mpv", "mpeg", "mpg", NULL };
4254 static const gchar *mpeg_ts_exts[] = { "ts", "mts", NULL };
4255 static const gchar *ogg_exts[] = { "anx", "ogg", "ogm", NULL };
4256 static const gchar *qt_exts[] = { "mov", NULL };
4257 static const gchar *qtif_exts[] = { "qif", "qtif", "qti", NULL };
4258 static const gchar *mj2_exts[] = { "mj2", NULL };
4259 static const gchar *jp2_exts[] = { "jp2", NULL };
4260 static const gchar *rm_exts[] = { "ra", "ram", "rm", "rmvb", NULL };
4261 static const gchar *swf_exts[] = { "swf", "swfl", NULL };
4262 static const gchar *utf8_exts[] = { "txt", NULL };
4263 static const gchar *wav_exts[] = { "wav", NULL };
4264 static const gchar *aiff_exts[] = { "aiff", "aif", "aifc", NULL };
4265 static const gchar *svx_exts[] = { "iff", "svx", NULL };
4266 static const gchar *paris_exts[] = { "paf", NULL };
4267 static const gchar *nist_exts[] = { "nist", NULL };
4268 static const gchar *voc_exts[] = { "voc", NULL };
4269 static const gchar *sds_exts[] = { "sds", NULL };
4270 static const gchar *ircam_exts[] = { "sf", NULL };
4271 static const gchar *w64_exts[] = { "w64", NULL };
4272 static const gchar *shn_exts[] = { "shn", NULL };
4273 static const gchar *ape_exts[] = { "ape", NULL };
4274 static const gchar *uri_exts[] = { "ram", NULL };
4275 static const gchar *hls_exts[] = { "m3u8", NULL };
4276 static const gchar *sdp_exts[] = { "sdp", NULL };
4277 static const gchar *smil_exts[] = { "smil", NULL };
4278 static const gchar *html_exts[] = { "htm", "html", NULL };
4279 static const gchar *xml_exts[] = { "xml", NULL };
4280 static const gchar *jpeg_exts[] = { "jpg", "jpe", "jpeg", NULL };
4281 static const gchar *gif_exts[] = { "gif", NULL };
4282 static const gchar *png_exts[] = { "png", NULL };
4283 static const gchar *bmp_exts[] = { "bmp", NULL };
4284 static const gchar *tiff_exts[] = { "tif", "tiff", NULL };
4285 static const gchar *matroska_exts[] = { "mkv", "mka", NULL };
4286 static const gchar *webm_exts[] = { "webm", NULL };
4287 static const gchar *mve_exts[] = { "mve", NULL };
4288 static const gchar *dv_exts[] = { "dv", "dif", NULL };
4289 static const gchar *amr_exts[] = { "amr", NULL };
4290 static const gchar *ilbc_exts[] = { "ilbc", NULL };
4291 static const gchar *sid_exts[] = { "sid", NULL };
4292 static const gchar *xcf_exts[] = { "xcf", NULL };
4293 static const gchar *mng_exts[] = { "mng", NULL };
4294 static const gchar *jng_exts[] = { "jng", NULL };
4295 static const gchar *xpm_exts[] = { "xpm", NULL };
4296 static const gchar *pnm_exts[] = { "pnm", "ppm", "pgm", "pbm", NULL };
4297 static const gchar *ras_exts[] = { "ras", NULL };
4298 static const gchar *bz2_exts[] = { "bz2", NULL };
4299 static const gchar *gz_exts[] = { "gz", NULL };
4300 static const gchar *zip_exts[] = { "zip", NULL };
4301 static const gchar *compress_exts[] = { "Z", NULL };
4302 static const gchar *m4a_exts[] = { "m4a", NULL };
4303 static const gchar *q3gp_exts[] = { "3gp", NULL };
4304 static const gchar *aac_exts[] = { "aac", "adts", "adif", "loas", NULL };
4305 static const gchar *spc_exts[] = { "spc", NULL };
4306 static const gchar *wavpack_exts[] = { "wv", "wvp", NULL };
4307 static const gchar *wavpack_correction_exts[] = { "wvc", NULL };
4308 static const gchar *rar_exts[] = { "rar", NULL };
4309 static const gchar *tar_exts[] = { "tar", NULL };
4310 static const gchar *ar_exts[] = { "a", NULL };
4311 static const gchar *msdos_exts[] = { "dll", "exe", "ocx", "sys", "scr",
4312 "msstyles", "cpl", NULL
4314 static const gchar *flv_exts[] = { "flv", NULL };
4315 static const gchar *m4v_exts[] = { "m4v", NULL };
4316 static const gchar *h263_exts[] = { "h263", "263", NULL };
4317 static const gchar *h264_exts[] = { "h264", "x264", "264", NULL };
4318 static const gchar *nuv_exts[] = { "nuv", NULL };
4319 static const gchar *vivo_exts[] = { "viv", NULL };
4320 static const gchar *nsf_exts[] = { "nsf", NULL };
4321 static const gchar *gym_exts[] = { "gym", NULL };
4322 static const gchar *ay_exts[] = { "ay", NULL };
4323 static const gchar *gbs_exts[] = { "gbs", NULL };
4324 static const gchar *kss_exts[] = { "kss", NULL };
4325 static const gchar *sap_exts[] = { "sap", NULL };
4326 static const gchar *vgm_exts[] = { "vgm", NULL };
4327 static const gchar *mid_exts[] = { "mid", "midi", NULL };
4328 static const gchar *mxmf_exts[] = { "mxmf", NULL };
4329 static const gchar *imelody_exts[] = { "imy", "ime", "imelody", NULL };
4330 static const gchar *pdf_exts[] = { "pdf", NULL };
4331 static const gchar *ps_exts[] = { "ps", NULL };
4332 static const gchar *svg_exts[] = { "svg", NULL };
4333 static const gchar *mxf_exts[] = { "mxf", NULL };
4334 static const gchar *ivf_exts[] = { "ivf", NULL };
4335 static const gchar *msword_exts[] = { "doc", NULL };
4336 static const gchar *dsstore_exts[] = { "DS_Store", NULL };
4337 static const gchar *psd_exts[] = { "psd", NULL };
4338 static const gchar *y4m_exts[] = { "y4m", NULL };
4340 GST_DEBUG_CATEGORY_INIT (type_find_debug, "typefindfunctions",
4341 GST_DEBUG_FG_GREEN | GST_DEBUG_BG_RED, "generic type find functions");
4343 /* must use strings, macros don't accept initializers */
4344 TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-ms-asf", GST_RANK_SECONDARY,
4346 "\060\046\262\165\216\146\317\021\246\331\000\252\000\142\316\154", 16,
4347 GST_TYPE_FIND_MAXIMUM);
4348 TYPE_FIND_REGISTER (plugin, "audio/x-musepack", GST_RANK_PRIMARY,
4349 musepack_type_find, musepack_exts, MUSEPACK_CAPS, NULL, NULL);
4350 TYPE_FIND_REGISTER (plugin, "audio/x-au", GST_RANK_MARGINAL,
4351 au_type_find, au_exts, AU_CAPS, NULL, NULL);
4352 TYPE_FIND_REGISTER_RIFF (plugin, "video/x-msvideo", GST_RANK_PRIMARY,
4354 TYPE_FIND_REGISTER_RIFF (plugin, "audio/qcelp", GST_RANK_PRIMARY,
4356 TYPE_FIND_REGISTER_RIFF (plugin, "video/x-cdxa", GST_RANK_PRIMARY,
4358 TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-vcd", GST_RANK_PRIMARY,
4359 cdxa_exts, "\000\377\377\377\377\377\377\377\377\377\377\000", 12,
4360 GST_TYPE_FIND_MAXIMUM);
4361 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-imelody", GST_RANK_PRIMARY,
4362 imelody_exts, "BEGIN:IMELODY", 13, GST_TYPE_FIND_MAXIMUM);
4364 TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-smoke", GST_RANK_PRIMARY,
4365 NULL, "\x80smoke\x00\x01\x00", 6, GST_TYPE_FIND_MAXIMUM);
4367 TYPE_FIND_REGISTER (plugin, "audio/midi", GST_RANK_PRIMARY, mid_type_find,
4368 mid_exts, MID_CAPS, NULL, NULL);
4369 TYPE_FIND_REGISTER_RIFF (plugin, "audio/riff-midi", GST_RANK_PRIMARY,
4371 TYPE_FIND_REGISTER (plugin, "audio/mobile-xmf", GST_RANK_PRIMARY,
4372 mxmf_type_find, mxmf_exts, MXMF_CAPS, NULL, NULL);
4373 TYPE_FIND_REGISTER (plugin, "video/x-fli", GST_RANK_MARGINAL, flx_type_find,
4374 flx_exts, FLX_CAPS, NULL, NULL);
4375 TYPE_FIND_REGISTER (plugin, "application/x-id3v2", GST_RANK_PRIMARY + 103,
4376 id3v2_type_find, id3_exts, ID3_CAPS, NULL, NULL);
4377 TYPE_FIND_REGISTER (plugin, "application/x-id3v1", GST_RANK_PRIMARY + 101,
4378 id3v1_type_find, id3_exts, ID3_CAPS, NULL, NULL);
4379 TYPE_FIND_REGISTER (plugin, "application/x-apetag", GST_RANK_PRIMARY + 102,
4380 apetag_type_find, apetag_exts, APETAG_CAPS, NULL, NULL);
4381 TYPE_FIND_REGISTER (plugin, "audio/x-ttafile", GST_RANK_PRIMARY,
4382 tta_type_find, tta_exts, TTA_CAPS, NULL, NULL);
4383 TYPE_FIND_REGISTER (plugin, "audio/x-mod", GST_RANK_SECONDARY, mod_type_find,
4384 mod_exts, MOD_CAPS, NULL, NULL);
4385 TYPE_FIND_REGISTER (plugin, "audio/mpeg", GST_RANK_PRIMARY, mp3_type_find,
4386 mp3_exts, MP3_CAPS, NULL, NULL);
4387 TYPE_FIND_REGISTER (plugin, "audio/x-ac3", GST_RANK_PRIMARY, ac3_type_find,
4388 ac3_exts, AC3_CAPS, NULL, NULL);
4389 TYPE_FIND_REGISTER (plugin, "audio/x-dts", GST_RANK_SECONDARY, dts_type_find,
4390 dts_exts, DTS_CAPS, NULL, NULL);
4391 TYPE_FIND_REGISTER (plugin, "audio/x-gsm", GST_RANK_PRIMARY, NULL, gsm_exts,
4392 GSM_CAPS, NULL, NULL);
4393 TYPE_FIND_REGISTER (plugin, "video/mpeg-sys", GST_RANK_PRIMARY,
4394 mpeg_sys_type_find, mpeg_sys_exts, MPEG_SYS_CAPS, NULL, NULL);
4395 TYPE_FIND_REGISTER (plugin, "video/mpegts", GST_RANK_PRIMARY,
4396 mpeg_ts_type_find, mpeg_ts_exts, MPEGTS_CAPS, NULL, NULL);
4397 TYPE_FIND_REGISTER (plugin, "application/ogg", GST_RANK_PRIMARY,
4398 ogganx_type_find, ogg_exts, OGGANX_CAPS, NULL, NULL);
4399 TYPE_FIND_REGISTER (plugin, "video/mpeg-elementary", GST_RANK_MARGINAL,
4400 mpeg_video_stream_type_find, mpeg_video_exts, MPEG_VIDEO_CAPS, NULL,
4402 TYPE_FIND_REGISTER (plugin, "video/mpeg4", GST_RANK_PRIMARY,
4403 mpeg4_video_type_find, m4v_exts, MPEG_VIDEO_CAPS, NULL, NULL);
4404 TYPE_FIND_REGISTER (plugin, "video/x-h263", GST_RANK_SECONDARY,
4405 h263_video_type_find, h263_exts, H263_VIDEO_CAPS, NULL, NULL);
4406 TYPE_FIND_REGISTER (plugin, "video/x-h264", GST_RANK_PRIMARY,
4407 h264_video_type_find, h264_exts, H264_VIDEO_CAPS, NULL, NULL);
4408 TYPE_FIND_REGISTER (plugin, "video/x-nuv", GST_RANK_SECONDARY, nuv_type_find,
4409 nuv_exts, NUV_CAPS, NULL, NULL);
4412 TYPE_FIND_REGISTER (plugin, "audio/x-m4a", GST_RANK_PRIMARY, m4a_type_find,
4413 m4a_exts, M4A_CAPS, NULL, NULL);
4414 TYPE_FIND_REGISTER (plugin, "application/x-3gp", GST_RANK_PRIMARY,
4415 q3gp_type_find, q3gp_exts, Q3GP_CAPS, NULL, NULL);
4416 TYPE_FIND_REGISTER (plugin, "video/quicktime", GST_RANK_SECONDARY,
4417 qt_type_find, qt_exts, QT_CAPS, NULL, NULL);
4418 TYPE_FIND_REGISTER (plugin, "image/x-quicktime", GST_RANK_SECONDARY,
4419 qtif_type_find, qtif_exts, QTIF_CAPS, NULL, NULL);
4420 TYPE_FIND_REGISTER (plugin, "image/jp2", GST_RANK_PRIMARY,
4421 jp2_type_find, jp2_exts, JP2_CAPS, NULL, NULL);
4422 TYPE_FIND_REGISTER (plugin, "video/mj2", GST_RANK_PRIMARY,
4423 jp2_type_find, mj2_exts, MJ2_CAPS, NULL, NULL);
4425 TYPE_FIND_REGISTER (plugin, "text/html", GST_RANK_SECONDARY, html_type_find,
4426 html_exts, HTML_CAPS, NULL, NULL);
4427 TYPE_FIND_REGISTER_START_WITH (plugin, "application/vnd.rn-realmedia",
4428 GST_RANK_SECONDARY, rm_exts, ".RMF", 4, GST_TYPE_FIND_MAXIMUM);
4429 TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-pn-realaudio",
4430 GST_RANK_SECONDARY, rm_exts, ".ra\375", 4, GST_TYPE_FIND_MAXIMUM);
4431 TYPE_FIND_REGISTER (plugin, "application/x-shockwave-flash",
4432 GST_RANK_SECONDARY, swf_type_find, swf_exts, SWF_CAPS, NULL, NULL);
4433 TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-flv", GST_RANK_SECONDARY,
4434 flv_exts, "FLV", 3, GST_TYPE_FIND_MAXIMUM);
4435 TYPE_FIND_REGISTER (plugin, "text/plain", GST_RANK_MARGINAL, utf8_type_find,
4436 utf8_exts, UTF8_CAPS, NULL, NULL);
4437 TYPE_FIND_REGISTER (plugin, "text/uri-list", GST_RANK_MARGINAL, uri_type_find,
4438 uri_exts, URI_CAPS, NULL, NULL);
4439 TYPE_FIND_REGISTER (plugin, "application/x-hls", GST_RANK_MARGINAL,
4440 hls_type_find, hls_exts, HLS_CAPS, NULL, NULL);
4441 TYPE_FIND_REGISTER (plugin, "application/sdp", GST_RANK_SECONDARY,
4442 sdp_type_find, sdp_exts, SDP_CAPS, NULL, NULL);
4443 TYPE_FIND_REGISTER (plugin, "application/smil", GST_RANK_SECONDARY,
4444 smil_type_find, smil_exts, SMIL_CAPS, NULL, NULL);
4445 TYPE_FIND_REGISTER (plugin, "application/xml", GST_RANK_MARGINAL,
4446 xml_type_find, xml_exts, GENERIC_XML_CAPS, NULL, NULL);
4447 TYPE_FIND_REGISTER_RIFF (plugin, "audio/x-wav", GST_RANK_PRIMARY, wav_exts,
4449 TYPE_FIND_REGISTER (plugin, "audio/x-aiff", GST_RANK_SECONDARY,
4450 aiff_type_find, aiff_exts, AIFF_CAPS, NULL, NULL);
4451 TYPE_FIND_REGISTER (plugin, "audio/x-svx", GST_RANK_SECONDARY, svx_type_find,
4452 svx_exts, SVX_CAPS, NULL, NULL);
4453 TYPE_FIND_REGISTER (plugin, "audio/x-paris", GST_RANK_SECONDARY,
4454 paris_type_find, paris_exts, PARIS_CAPS, NULL, NULL);
4455 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-nist", GST_RANK_SECONDARY,
4456 nist_exts, "NIST", 4, GST_TYPE_FIND_MAXIMUM);
4457 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-voc", GST_RANK_SECONDARY,
4458 voc_exts, "Creative", 8, GST_TYPE_FIND_MAXIMUM);
4459 TYPE_FIND_REGISTER (plugin, "audio/x-sds", GST_RANK_SECONDARY, sds_type_find,
4460 sds_exts, SDS_CAPS, NULL, NULL);
4461 TYPE_FIND_REGISTER (plugin, "audio/x-ircam", GST_RANK_SECONDARY,
4462 ircam_type_find, ircam_exts, IRCAM_CAPS, NULL, NULL);
4463 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-w64", GST_RANK_SECONDARY,
4464 w64_exts, "riff", 4, GST_TYPE_FIND_MAXIMUM);
4465 TYPE_FIND_REGISTER (plugin, "audio/x-shorten", GST_RANK_SECONDARY,
4466 shn_type_find, shn_exts, SHN_CAPS, NULL, NULL);
4467 TYPE_FIND_REGISTER (plugin, "application/x-ape", GST_RANK_SECONDARY,
4468 ape_type_find, ape_exts, APE_CAPS, NULL, NULL);
4469 TYPE_FIND_REGISTER (plugin, "image/jpeg", GST_RANK_PRIMARY + 15,
4470 jpeg_type_find, jpeg_exts, JPEG_CAPS, NULL, NULL);
4471 TYPE_FIND_REGISTER_START_WITH (plugin, "image/gif", GST_RANK_PRIMARY,
4472 gif_exts, "GIF8", 4, GST_TYPE_FIND_MAXIMUM);
4473 TYPE_FIND_REGISTER_START_WITH (plugin, "image/png", GST_RANK_PRIMARY + 14,
4474 png_exts, "\211PNG\015\012\032\012", 8, GST_TYPE_FIND_MAXIMUM);
4475 TYPE_FIND_REGISTER (plugin, "image/bmp", GST_RANK_PRIMARY, bmp_type_find,
4476 bmp_exts, BMP_CAPS, NULL, NULL);
4477 TYPE_FIND_REGISTER (plugin, "image/tiff", GST_RANK_PRIMARY, tiff_type_find,
4478 tiff_exts, TIFF_CAPS, NULL, NULL);
4479 TYPE_FIND_REGISTER (plugin, "image/x-portable-pixmap", GST_RANK_SECONDARY,
4480 pnm_type_find, pnm_exts, PNM_CAPS, NULL, NULL);
4481 TYPE_FIND_REGISTER (plugin, "video/x-matroska", GST_RANK_PRIMARY,
4482 matroska_type_find, matroska_exts, MATROSKA_CAPS, NULL, NULL);
4483 TYPE_FIND_REGISTER (plugin, "video/webm", GST_RANK_PRIMARY,
4484 webm_type_find, webm_exts, WEBM_CAPS, NULL, NULL);
4485 TYPE_FIND_REGISTER (plugin, "application/mxf", GST_RANK_PRIMARY,
4486 mxf_type_find, mxf_exts, MXF_CAPS, NULL, NULL);
4487 TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-mve", GST_RANK_SECONDARY,
4488 mve_exts, "Interplay MVE File\032\000\032\000\000\001\063\021", 26,
4489 GST_TYPE_FIND_MAXIMUM);
4490 TYPE_FIND_REGISTER (plugin, "video/x-dv", GST_RANK_SECONDARY, dv_type_find,
4491 dv_exts, DV_CAPS, NULL, NULL);
4492 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-amr-nb-sh", GST_RANK_PRIMARY,
4493 amr_exts, "#!AMR", 5, GST_TYPE_FIND_LIKELY);
4494 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-amr-wb-sh", GST_RANK_PRIMARY,
4495 amr_exts, "#!AMR-WB", 7, GST_TYPE_FIND_MAXIMUM);
4496 TYPE_FIND_REGISTER (plugin, "audio/iLBC-sh", GST_RANK_PRIMARY,
4497 ilbc_type_find, ilbc_exts, ILBC_CAPS, NULL, NULL);
4498 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-sid", GST_RANK_MARGINAL,
4499 sid_exts, "PSID", 4, GST_TYPE_FIND_MAXIMUM);
4500 TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-xcf", GST_RANK_SECONDARY,
4501 xcf_exts, "gimp xcf", 8, GST_TYPE_FIND_MAXIMUM);
4502 TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-mng", GST_RANK_SECONDARY,
4503 mng_exts, "\212MNG\015\012\032\012", 8, GST_TYPE_FIND_MAXIMUM);
4504 TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-jng", GST_RANK_SECONDARY,
4505 jng_exts, "\213JNG\015\012\032\012", 8, GST_TYPE_FIND_MAXIMUM);
4506 TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-xpixmap", GST_RANK_SECONDARY,
4507 xpm_exts, "/* XPM */", 9, GST_TYPE_FIND_MAXIMUM);
4508 TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-sun-raster",
4509 GST_RANK_SECONDARY, ras_exts, "\131\246\152\225", 4,
4510 GST_TYPE_FIND_MAXIMUM);
4511 TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-bzip",
4512 GST_RANK_SECONDARY, bz2_exts, "BZh", 3, GST_TYPE_FIND_LIKELY);
4513 TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-gzip",
4514 GST_RANK_SECONDARY, gz_exts, "\037\213", 2, GST_TYPE_FIND_LIKELY);
4515 TYPE_FIND_REGISTER_START_WITH (plugin, "application/zip", GST_RANK_SECONDARY,
4516 zip_exts, "PK\003\004", 4, GST_TYPE_FIND_LIKELY);
4517 TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-compress",
4518 GST_RANK_SECONDARY, compress_exts, "\037\235", 2, GST_TYPE_FIND_LIKELY);
4519 TYPE_FIND_REGISTER (plugin, "subtitle/x-kate", GST_RANK_MARGINAL,
4520 kate_type_find, NULL, NULL, NULL, NULL);
4521 TYPE_FIND_REGISTER (plugin, "audio/x-flac", GST_RANK_PRIMARY,
4522 flac_type_find, flac_exts, FLAC_CAPS, NULL, NULL);
4523 TYPE_FIND_REGISTER (plugin, "audio/x-vorbis", GST_RANK_PRIMARY,
4524 vorbis_type_find, NULL, VORBIS_CAPS, NULL, NULL);
4525 TYPE_FIND_REGISTER (plugin, "video/x-theora", GST_RANK_PRIMARY,
4526 theora_type_find, NULL, THEORA_CAPS, NULL, NULL);
4527 TYPE_FIND_REGISTER (plugin, "application/x-ogm-video", GST_RANK_PRIMARY,
4528 ogmvideo_type_find, NULL, OGMVIDEO_CAPS, NULL, NULL);
4529 TYPE_FIND_REGISTER (plugin, "application/x-ogm-audio", GST_RANK_PRIMARY,
4530 ogmaudio_type_find, NULL, OGMAUDIO_CAPS, NULL, NULL);
4531 TYPE_FIND_REGISTER (plugin, "application/x-ogm-text", GST_RANK_PRIMARY,
4532 ogmtext_type_find, NULL, OGMTEXT_CAPS, NULL, NULL);
4533 TYPE_FIND_REGISTER (plugin, "audio/x-speex", GST_RANK_PRIMARY,
4534 speex_type_find, NULL, SPEEX_CAPS, NULL, NULL);
4535 TYPE_FIND_REGISTER (plugin, "audio/x-celt", GST_RANK_PRIMARY,
4536 celt_type_find, NULL, CELT_CAPS, NULL, NULL);
4537 TYPE_FIND_REGISTER (plugin, "application/x-ogg-skeleton", GST_RANK_PRIMARY,
4538 oggskel_type_find, NULL, OGG_SKELETON_CAPS, NULL, NULL);
4539 TYPE_FIND_REGISTER (plugin, "text/x-cmml", GST_RANK_PRIMARY, cmml_type_find,
4540 NULL, CMML_CAPS, NULL, NULL);
4541 TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-executable",
4542 GST_RANK_MARGINAL, NULL, "\177ELF", 4, GST_TYPE_FIND_MAXIMUM);
4543 TYPE_FIND_REGISTER (plugin, "audio/aac", GST_RANK_SECONDARY,
4544 aac_type_find, aac_exts, AAC_CAPS, NULL, NULL);
4545 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-spc", GST_RANK_SECONDARY,
4546 spc_exts, "SNES-SPC700 Sound File Data", 27, GST_TYPE_FIND_MAXIMUM);
4547 TYPE_FIND_REGISTER (plugin, "audio/x-wavpack", GST_RANK_SECONDARY,
4548 wavpack_type_find, wavpack_exts, WAVPACK_CAPS, NULL, NULL);
4549 TYPE_FIND_REGISTER (plugin, "audio/x-wavpack-correction", GST_RANK_SECONDARY,
4550 wavpack_type_find, wavpack_correction_exts, WAVPACK_CORRECTION_CAPS, NULL,
4552 TYPE_FIND_REGISTER (plugin, "application/postscript", GST_RANK_SECONDARY,
4553 postscript_type_find, ps_exts, POSTSCRIPT_CAPS, NULL, NULL);
4554 TYPE_FIND_REGISTER (plugin, "image/svg+xml", GST_RANK_SECONDARY,
4555 svg_type_find, svg_exts, SVG_CAPS, NULL, NULL);
4556 TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-rar",
4557 GST_RANK_SECONDARY, rar_exts, "Rar!", 4, GST_TYPE_FIND_LIKELY);
4558 TYPE_FIND_REGISTER (plugin, "application/x-tar", GST_RANK_SECONDARY,
4559 tar_type_find, tar_exts, TAR_CAPS, NULL, NULL);
4560 TYPE_FIND_REGISTER (plugin, "application/x-ar", GST_RANK_SECONDARY,
4561 ar_type_find, ar_exts, AR_CAPS, NULL, NULL);
4562 TYPE_FIND_REGISTER (plugin, "application/x-ms-dos-executable",
4563 GST_RANK_SECONDARY, msdos_type_find, msdos_exts, MSDOS_CAPS, NULL, NULL);
4564 TYPE_FIND_REGISTER (plugin, "video/x-dirac", GST_RANK_PRIMARY,
4565 dirac_type_find, NULL, DIRAC_CAPS, NULL, NULL);
4566 TYPE_FIND_REGISTER (plugin, "multipart/x-mixed-replace", GST_RANK_SECONDARY,
4567 multipart_type_find, NULL, MULTIPART_CAPS, NULL, NULL);
4568 TYPE_FIND_REGISTER (plugin, "application/x-mmsh", GST_RANK_SECONDARY,
4569 mmsh_type_find, NULL, MMSH_CAPS, NULL, NULL);
4570 TYPE_FIND_REGISTER (plugin, "video/vivo", GST_RANK_SECONDARY,
4571 vivo_type_find, vivo_exts, VIVO_CAPS, NULL, NULL);
4572 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-nsf",
4573 GST_RANK_SECONDARY, nsf_exts, "NESM\x1a", 5, GST_TYPE_FIND_MAXIMUM);
4574 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-gym",
4575 GST_RANK_SECONDARY, gym_exts, "GYMX", 4, GST_TYPE_FIND_MAXIMUM);
4576 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-ay",
4577 GST_RANK_SECONDARY, ay_exts, "ZXAYEMUL", 8, GST_TYPE_FIND_MAXIMUM);
4578 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-gbs",
4579 GST_RANK_SECONDARY, gbs_exts, "GBS\x01", 4, GST_TYPE_FIND_MAXIMUM);
4580 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-vgm",
4581 GST_RANK_SECONDARY, vgm_exts, "Vgm\x20", 4, GST_TYPE_FIND_MAXIMUM);
4582 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-sap",
4583 GST_RANK_SECONDARY, sap_exts, "SAP\x0d\x0a" "AUTHOR\x20", 12,
4584 GST_TYPE_FIND_MAXIMUM);
4585 TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-ivf", GST_RANK_SECONDARY,
4586 ivf_exts, "DKIF", 4, GST_TYPE_FIND_NEARLY_CERTAIN);
4587 TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-kss", GST_RANK_SECONDARY,
4588 kss_exts, "KSSX\0", 5, GST_TYPE_FIND_MAXIMUM);
4589 TYPE_FIND_REGISTER_START_WITH (plugin, "application/pdf", GST_RANK_SECONDARY,
4590 pdf_exts, "%PDF-", 5, GST_TYPE_FIND_LIKELY);
4591 TYPE_FIND_REGISTER_START_WITH (plugin, "application/msword",
4592 GST_RANK_SECONDARY, msword_exts, "\320\317\021\340\241\261\032\341", 8,
4593 GST_TYPE_FIND_LIKELY);
4594 /* Mac OS X .DS_Store files tend to be taken for video/mpeg */
4595 TYPE_FIND_REGISTER_START_WITH (plugin, "application/octet-stream",
4596 GST_RANK_SECONDARY, dsstore_exts, "\000\000\000\001Bud1", 8,
4597 GST_TYPE_FIND_LIKELY);
4598 TYPE_FIND_REGISTER_START_WITH (plugin, "image/vnd.adobe.photoshop",
4599 GST_RANK_SECONDARY, psd_exts, "8BPS\000\001\000\000\000\000", 10,
4600 GST_TYPE_FIND_LIKELY);
4601 TYPE_FIND_REGISTER (plugin, "image/vnd.wap.wbmp", GST_RANK_MARGINAL,
4602 wbmp_typefind, NULL, NULL, NULL, NULL);
4603 TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-yuv4mpeg",
4604 GST_RANK_SECONDARY, y4m_exts, "YUV4MPEG2 ", 10, GST_TYPE_FIND_LIKELY);
4605 TYPE_FIND_REGISTER (plugin, "image/x-icon", GST_RANK_MARGINAL,
4606 windows_icon_typefind, NULL, NULL, NULL, NULL);
4609 TYPE_FIND_REGISTER (plugin, "xdgmime-base", GST_RANK_MARGINAL,
4610 xdgmime_typefind, NULL, NULL, NULL, NULL);
4613 TYPE_FIND_REGISTER (plugin, "image/x-degas", GST_RANK_MARGINAL,
4614 degas_type_find, NULL, NULL, NULL, NULL);
4619 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
4621 "typefindfunctions",
4622 "default typefind functions",
4623 plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)