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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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3785 lines
119 KiB
C
3785 lines
119 KiB
C
/* GStreamer
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* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
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* Copyright (C) 2005-2009 Tim-Philipp Müller <tim centricular net>
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* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* gsttypefindfunctions.c: collection of various typefind functions
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <glib.h>
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/* don't want to add gio xdgmime typefinder if gio was disabled via configure */
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#ifdef HAVE_GIO
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#include <gio/gio.h>
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#define USE_GIO
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#endif
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#include <gst/gsttypefind.h>
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#include <gst/gstelement.h>
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#include <gst/gstversion.h>
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#include <gst/gstinfo.h>
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#include <gst/gstutils.h>
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#include <string.h>
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#include <ctype.h>
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GST_DEBUG_CATEGORY_STATIC (type_find_debug);
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#define GST_CAT_DEFAULT type_find_debug
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/* DataScanCtx: helper for typefind functions that scan through data
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* step-by-step, to avoid doing a peek at each and every offset */
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#define DATA_SCAN_CTX_CHUNK_SIZE 4096
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typedef struct
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{
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guint64 offset;
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const guint8 *data;
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gint size;
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} DataScanCtx;
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static inline void
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data_scan_ctx_advance (GstTypeFind * tf, DataScanCtx * c, guint bytes_to_skip)
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{
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c->offset += bytes_to_skip;
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if (G_LIKELY (c->size > bytes_to_skip)) {
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c->size -= bytes_to_skip;
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c->data += bytes_to_skip;
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} else {
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c->data += c->size;
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c->size = 0;
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}
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}
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static inline gboolean
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data_scan_ctx_ensure_data (GstTypeFind * tf, DataScanCtx * c, gint min_len)
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{
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const guint8 *data;
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guint64 len;
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guint chunk_len = MAX (DATA_SCAN_CTX_CHUNK_SIZE, min_len);
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if (G_LIKELY (c->size >= min_len))
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return TRUE;
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data = gst_type_find_peek (tf, c->offset, chunk_len);
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if (G_LIKELY (data != NULL)) {
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c->data = data;
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c->size = chunk_len;
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return TRUE;
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}
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/* if there's less than our chunk size, try to get as much as we can, but
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* always at least min_len bytes (we might be typefinding the first buffer
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* of the stream and not have as much data available as we'd like) */
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len = gst_type_find_get_length (tf);
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if (len > 0) {
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len = CLAMP (len - c->offset, min_len, chunk_len);
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} else {
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len = min_len;
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}
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data = gst_type_find_peek (tf, c->offset, len);
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if (data != NULL) {
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c->data = data;
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c->size = len;
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return TRUE;
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}
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return FALSE;
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}
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/*** text/plain ***/
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static gboolean xml_check_first_element (GstTypeFind * tf,
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const gchar * element, guint elen, gboolean strict);
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static gboolean sdp_check_header (GstTypeFind * tf);
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static GstStaticCaps utf8_caps = GST_STATIC_CAPS ("text/plain");
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#define UTF8_CAPS gst_static_caps_get(&utf8_caps)
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static gboolean
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utf8_type_find_have_valid_utf8_at_offset (GstTypeFind * tf, guint64 offset,
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GstTypeFindProbability * prob)
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{
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guint8 *data;
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/* randomly decided values */
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guint min_size = 16; /* minimum size */
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guint size = 32 * 1024; /* starting size */
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guint probability = 95; /* starting probability */
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guint step = 10; /* how much we reduce probability in each
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* iteration */
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while (probability > step && size > min_size) {
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data = gst_type_find_peek (tf, offset, size);
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if (data) {
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gchar *end;
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gchar *start = (gchar *) data;
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if (g_utf8_validate (start, size, (const gchar **) &end) || (end - start + 4 > size)) { /* allow last char to be cut off */
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*prob = probability;
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return TRUE;
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}
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*prob = 0;
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return FALSE;
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}
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size /= 2;
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probability -= step;
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}
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*prob = 0;
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return FALSE;
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}
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static void
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utf8_type_find (GstTypeFind * tf, gpointer unused)
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{
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GstTypeFindProbability start_prob, mid_prob;
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guint64 length;
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/* leave xml to the xml typefinders */
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if (xml_check_first_element (tf, "", 0, TRUE))
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return;
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/* leave sdp to the sdp typefinders */
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if (sdp_check_header (tf))
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return;
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/* check beginning of stream */
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if (!utf8_type_find_have_valid_utf8_at_offset (tf, 0, &start_prob))
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return;
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GST_LOG ("start is plain text with probability of %u", start_prob);
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/* POSSIBLE is the highest probability we ever return if we can't
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* probe into the middle of the file and don't know its length */
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length = gst_type_find_get_length (tf);
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if (length == 0 || length == (guint64) - 1) {
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gst_type_find_suggest (tf, MIN (start_prob, GST_TYPE_FIND_POSSIBLE),
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UTF8_CAPS);
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return;
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}
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if (length < 64 * 1024) {
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gst_type_find_suggest (tf, start_prob, UTF8_CAPS);
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return;
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}
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/* check middle of stream */
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if (!utf8_type_find_have_valid_utf8_at_offset (tf, length / 2, &mid_prob))
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return;
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GST_LOG ("middle is plain text with probability of %u", mid_prob);
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gst_type_find_suggest (tf, (start_prob + mid_prob) / 2, UTF8_CAPS);
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}
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/*** text/uri-list ***/
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static GstStaticCaps uri_caps = GST_STATIC_CAPS ("text/uri-list");
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#define URI_CAPS (gst_static_caps_get(&uri_caps))
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#define BUFFER_SIZE 16 /* If the string is < 16 bytes we're screwed */
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#define INC_BUFFER { \
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pos++; \
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if (pos == BUFFER_SIZE) { \
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pos = 0; \
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offset += BUFFER_SIZE; \
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data = gst_type_find_peek (tf, offset, BUFFER_SIZE); \
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if (data == NULL) return; \
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} else { \
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data++; \
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} \
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}
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static void
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uri_type_find (GstTypeFind * tf, gpointer unused)
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{
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guint8 *data = gst_type_find_peek (tf, 0, BUFFER_SIZE);
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guint pos = 0;
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guint offset = 0;
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if (data) {
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/* Search for # comment lines */
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while (*data == '#') {
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/* Goto end of line */
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while (*data != '\n') {
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INC_BUFFER;
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}
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INC_BUFFER;
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}
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if (!g_ascii_isalpha (*data)) {
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/* Had a non alpha char - can't be uri-list */
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return;
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}
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INC_BUFFER;
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while (g_ascii_isalnum (*data)) {
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INC_BUFFER;
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}
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if (*data != ':') {
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/* First non alpha char is not a : */
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return;
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}
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/* Get the next 2 bytes as well */
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data = gst_type_find_peek (tf, offset + pos, 3);
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if (data == NULL)
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return;
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if (data[1] != '/' && data[2] != '/') {
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return;
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}
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, URI_CAPS);
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}
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}
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/*** application/xml **********************************************************/
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#define XML_BUFFER_SIZE 16
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#define XML_INC_BUFFER { \
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pos++; \
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if (pos == XML_BUFFER_SIZE) { \
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pos = 0; \
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offset += XML_BUFFER_SIZE; \
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data = gst_type_find_peek (tf, offset, XML_BUFFER_SIZE); \
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if (data == NULL) return FALSE; \
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} else { \
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data++; \
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} \
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}
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static gboolean
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xml_check_first_element (GstTypeFind * tf, const gchar * element, guint elen,
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gboolean strict)
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{
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gboolean got_xmldec;
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guint8 *data;
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guint offset = 0;
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guint pos = 0;
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data = gst_type_find_peek (tf, 0, XML_BUFFER_SIZE);
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if (!data)
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return FALSE;
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/* look for the XMLDec
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* see XML spec 2.8, Prolog and Document Type Declaration
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* http://www.w3.org/TR/2004/REC-xml-20040204/#sec-prolog-dtd */
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got_xmldec = (memcmp (data, "<?xml", 5) == 0);
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if (strict && !got_xmldec)
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return FALSE;
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/* skip XMLDec in any case if we've got one */
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if (got_xmldec) {
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pos += 5;
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data += 5;
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}
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/* look for the first element, it has to be the requested element. Bail
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* out if it is not within the first 4kB. */
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while (data && (offset + pos) < 4096) {
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while (*data != '<' && (offset + pos) < 4096) {
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XML_INC_BUFFER;
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}
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XML_INC_BUFFER;
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if (!g_ascii_isalpha (*data)) {
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/* if not alphabetic, it's a PI or an element / attribute declaration
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* like <?xxx or <!xxx */
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XML_INC_BUFFER;
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continue;
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}
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/* the first normal element, check if it's the one asked for */
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data = gst_type_find_peek (tf, offset + pos, elen + 1);
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return (data && element && strncmp ((char *) data, element, elen) == 0);
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}
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return FALSE;
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}
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static GstStaticCaps generic_xml_caps = GST_STATIC_CAPS ("application/xml");
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#define GENERIC_XML_CAPS (gst_static_caps_get(&generic_xml_caps))
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static void
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xml_type_find (GstTypeFind * tf, gpointer unused)
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{
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if (xml_check_first_element (tf, "", 0, TRUE)) {
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gst_type_find_suggest (tf, GST_TYPE_FIND_MINIMUM, GENERIC_XML_CAPS);
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}
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}
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/*** application/sdp *********************************************************/
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static GstStaticCaps sdp_caps = GST_STATIC_CAPS ("application/sdp");
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#define SDP_CAPS (gst_static_caps_get(&sdp_caps))
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static gboolean
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sdp_check_header (GstTypeFind * tf)
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{
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guint8 *data;
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data = gst_type_find_peek (tf, 0, 5);
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if (!data)
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return FALSE;
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/* sdp must start with v=0[\r]\n */
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if (memcmp (data, "v=0", 3))
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return FALSE;
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if (data[3] == '\r' && data[4] == '\n')
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return TRUE;
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if (data[3] == '\n')
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return TRUE;
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return FALSE;
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}
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static void
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sdp_type_find (GstTypeFind * tf, gpointer unused)
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{
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if (sdp_check_header (tf))
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SDP_CAPS);
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}
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/*** application/smil *********************************************************/
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static GstStaticCaps smil_caps = GST_STATIC_CAPS ("application/smil");
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#define SMIL_CAPS (gst_static_caps_get(&smil_caps))
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static void
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smil_type_find (GstTypeFind * tf, gpointer unused)
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{
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if (xml_check_first_element (tf, "smil", 4, FALSE)) {
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SMIL_CAPS);
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}
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}
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/*** text/html ***/
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static GstStaticCaps html_caps = GST_STATIC_CAPS ("text/html");
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#define HTML_CAPS gst_static_caps_get (&html_caps)
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static void
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html_type_find (GstTypeFind * tf, gpointer unused)
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{
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gchar *d, *data;
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data = (gchar *) gst_type_find_peek (tf, 0, 16);
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if (!data)
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return;
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if (!g_ascii_strncasecmp (data, "<!DOCTYPE HTML", 14)) {
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HTML_CAPS);
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} else if (xml_check_first_element (tf, "html", 4, FALSE)) {
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HTML_CAPS);
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} else if ((d = memchr (data, '<', 16))) {
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data = (gchar *) gst_type_find_peek (tf, d - data, 6);
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if (data && g_ascii_strncasecmp (data, "<html>", 6) == 0) {
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, HTML_CAPS);
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}
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}
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}
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/*** audio/midi ***/
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static GstStaticCaps mid_caps = GST_STATIC_CAPS ("audio/midi");
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#define MID_CAPS gst_static_caps_get(&mid_caps)
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static void
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mid_type_find (GstTypeFind * tf, gpointer unused)
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{
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guint8 *data = gst_type_find_peek (tf, 0, 4);
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/* http://jedi.ks.uiuc.edu/~johns/links/music/midifile.html */
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if (data && data[0] == 'M' && data[1] == 'T' && data[2] == 'h'
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&& data[3] == 'd')
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MID_CAPS);
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}
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/*** audio/mobile-xmf ***/
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static GstStaticCaps mxmf_caps = GST_STATIC_CAPS ("audio/mobile-xmf");
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#define MXMF_CAPS gst_static_caps_get(&mxmf_caps)
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static void
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mxmf_type_find (GstTypeFind * tf, gpointer unused)
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{
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guint8 *data = NULL;
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/* Search FileId "XMF_" 4 bytes */
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data = gst_type_find_peek (tf, 0, 4);
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if (data && data[0] == 'X' && data[1] == 'M' && data[2] == 'F'
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&& data[3] == '_') {
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/* Search Format version "2.00" 4 bytes */
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data = gst_type_find_peek (tf, 4, 4);
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if (data && data[0] == '2' && data[1] == '.' && data[2] == '0'
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&& data[3] == '0') {
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/* Search TypeId 2 1 byte */
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data = gst_type_find_peek (tf, 11, 1);
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if (data && data[0] == 2) {
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MXMF_CAPS);
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}
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}
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}
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}
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/*** video/x-fli ***/
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static GstStaticCaps flx_caps = GST_STATIC_CAPS ("video/x-fli");
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#define FLX_CAPS gst_static_caps_get(&flx_caps)
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static void
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flx_type_find (GstTypeFind * tf, gpointer unused)
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{
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guint8 *data = gst_type_find_peek (tf, 0, 134);
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if (data) {
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/* check magic and the frame type of the first frame */
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if ((data[4] == 0x11 || data[4] == 0x12 ||
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data[4] == 0x30 || data[4] == 0x44) &&
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data[5] == 0xaf &&
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((data[132] == 0x00 || data[132] == 0xfa) && data[133] == 0xf1)) {
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, FLX_CAPS);
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}
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return;
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}
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data = gst_type_find_peek (tf, 0, 6);
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if (data) {
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/* check magic only */
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if ((data[4] == 0x11 || data[4] == 0x12 ||
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data[4] == 0x30 || data[4] == 0x44) && data[5] == 0xaf) {
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gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, FLX_CAPS);
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}
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return;
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}
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}
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/*** application/x-id3 ***/
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static GstStaticCaps id3_caps = GST_STATIC_CAPS ("application/x-id3");
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#define ID3_CAPS gst_static_caps_get(&id3_caps)
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static void
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id3v2_type_find (GstTypeFind * tf, gpointer unused)
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{
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guint8 *data = gst_type_find_peek (tf, 0, 10);
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if (data && memcmp (data, "ID3", 3) == 0 &&
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data[3] != 0xFF && data[4] != 0xFF &&
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(data[6] & 0x80) == 0 && (data[7] & 0x80) == 0 &&
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(data[8] & 0x80) == 0 && (data[9] & 0x80) == 0) {
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, ID3_CAPS);
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}
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}
|
|
|
|
static void
|
|
id3v1_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, -128, 3);
|
|
|
|
if (data && memcmp (data, "TAG", 3) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, ID3_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** application/x-ape ***/
|
|
|
|
static GstStaticCaps apetag_caps = GST_STATIC_CAPS ("application/x-apetag");
|
|
|
|
#define APETAG_CAPS gst_static_caps_get(&apetag_caps)
|
|
static void
|
|
apetag_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data;
|
|
|
|
/* APEv1/2 at start of file */
|
|
data = gst_type_find_peek (tf, 0, 8);
|
|
if (data && !memcmp (data, "APETAGEX", 8)) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, APETAG_CAPS);
|
|
return;
|
|
}
|
|
|
|
/* APEv1/2 at end of file */
|
|
data = gst_type_find_peek (tf, -32, 8);
|
|
if (data && !memcmp (data, "APETAGEX", 8)) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, APETAG_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*** audio/x-ttafile ***/
|
|
|
|
static GstStaticCaps tta_caps = GST_STATIC_CAPS ("audio/x-ttafile");
|
|
|
|
#define TTA_CAPS gst_static_caps_get(&tta_caps)
|
|
static void
|
|
tta_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 3);
|
|
|
|
if (data) {
|
|
if (memcmp (data, "TTA", 3) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, TTA_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** audio/x-flac ***/
|
|
static GstStaticCaps flac_caps = GST_STATIC_CAPS ("audio/x-flac");
|
|
|
|
#define FLAC_CAPS (gst_static_caps_get(&flac_caps))
|
|
|
|
static void
|
|
flac_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
DataScanCtx c = { 0, NULL, 0 };
|
|
|
|
if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 4)))
|
|
return;
|
|
|
|
/* standard flac (also old/broken flac-in-ogg with an initial 4-byte marker
|
|
* packet and without the usual packet framing) */
|
|
if (memcmp (c.data, "fLaC", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, FLAC_CAPS);
|
|
return;
|
|
}
|
|
|
|
if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 6)))
|
|
return;
|
|
|
|
/* flac-in-ogg, see http://flac.sourceforge.net/ogg_mapping.html */
|
|
if (memcmp (c.data, "\177FLAC\001", 6) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, FLAC_CAPS);
|
|
return;
|
|
}
|
|
|
|
/* disabled because it happily typefinds /dev/urandom as audio/x-flac, and
|
|
* because I yet have to see header-less flac in the wild */
|
|
#if 0
|
|
/* flac without headers (subset format) */
|
|
/* 64K should be enough */
|
|
while (c.offset < (64 * 1024)) {
|
|
if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 4)))
|
|
break;
|
|
|
|
/* look for frame header,
|
|
* http://flac.sourceforge.net/format.html#frame_header
|
|
*/
|
|
if (c.data[0] == 0xff && (c.data[1] >> 2) == 0x3e) {
|
|
/* bit 15 in the header must be 0 */
|
|
if (((c.data[1] >> 1) & 0x01) == 0x01)
|
|
goto advance;
|
|
|
|
/* blocksize must be != 0x00 */
|
|
if ((c.data[2] >> 4) == 0x00)
|
|
goto advance;
|
|
|
|
/* samplerate must be != 0x0f */
|
|
if ((c.data[2] & 0x0f) == 0x0f)
|
|
goto advance;
|
|
/* also 0 is invalid, as it means get the info from the header and we
|
|
* don't have headers if we are here */
|
|
if ((c.data[2] & 0x0f) == 0x00)
|
|
goto advance;
|
|
|
|
/* channel assignment must be < 11 */
|
|
if ((c.data[3] >> 4) >= 11)
|
|
goto advance;
|
|
|
|
/* sample size must be != 0x07 and != 0x05 */
|
|
if (((c.data[3] >> 1) & 0x07) == 0x07)
|
|
goto advance;
|
|
if (((c.data[3] >> 1) & 0x07) == 0x05)
|
|
goto advance;
|
|
/* also 0 is invalid, as it means get the info from the header and we
|
|
* don't have headers if we are here */
|
|
if (((c.data[3] >> 1) & 0x07) == 0x00)
|
|
goto advance;
|
|
|
|
/* next bit must be 0 */
|
|
if ((c.data[3] & 0x01) == 0x01)
|
|
goto advance;
|
|
|
|
/* FIXME: shouldn't we include the crc check ? */
|
|
|
|
GST_DEBUG ("Found flac without headers at %d", (gint) c.offset);
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, FLAC_CAPS);
|
|
return;
|
|
}
|
|
advance:
|
|
data_scan_ctx_advance (tf, &c, 1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*** audio/mpeg version 2, 4 ***/
|
|
|
|
static GstStaticCaps aac_caps = GST_STATIC_CAPS ("audio/mpeg, "
|
|
"mpegversion = (int) { 2, 4 }, framed = (bool) false");
|
|
#define AAC_CAPS (gst_static_caps_get(&aac_caps))
|
|
#define AAC_AMOUNT (4096)
|
|
static void
|
|
aac_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
DataScanCtx c = { 0, NULL, 0 };
|
|
|
|
while (c.offset < AAC_AMOUNT) {
|
|
guint snc, len;
|
|
|
|
/* detect adts header or adif header.
|
|
* The ADIF header is 4 bytes, that should be OK. The ADTS header, on
|
|
* the other hand, is 14 bits only, so we require one valid frame with
|
|
* again a valid syncpoint on the next one (28 bits) for certainty. We
|
|
* require 4 kB, which is quite a lot, since frames are generally 200-400
|
|
* bytes.
|
|
*/
|
|
if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 6)))
|
|
break;
|
|
|
|
snc = GST_READ_UINT16_BE (c.data);
|
|
if (G_UNLIKELY ((snc & 0xfff6) == 0xfff0)) {
|
|
/* ADTS header - find frame length */
|
|
GST_DEBUG ("Found one ADTS syncpoint at offset 0x%" G_GINT64_MODIFIER
|
|
"x, tracing next...", c.offset);
|
|
len = ((c.data[3] & 0x03) << 11) |
|
|
(c.data[4] << 3) | ((c.data[5] & 0xe0) >> 5);
|
|
|
|
if (len == 0 || !data_scan_ctx_ensure_data (tf, &c, len + 2)) {
|
|
GST_DEBUG ("Wrong sync or next frame not within reach, len=%u", len);
|
|
goto next;
|
|
}
|
|
|
|
snc = GST_READ_UINT16_BE (c.data + len);
|
|
if ((snc & 0xfff6) == 0xfff0) {
|
|
gint mpegversion;
|
|
|
|
mpegversion = (c.data[1] & 0x08) ? 2 : 4;
|
|
GST_DEBUG ("Found second ADTS-%d syncpoint at offset 0x%"
|
|
G_GINT64_MODIFIER "x, framelen %u", mpegversion, c.offset, len);
|
|
gst_type_find_suggest_simple (tf, GST_TYPE_FIND_LIKELY, "audio/mpeg",
|
|
"framed", G_TYPE_BOOLEAN, FALSE,
|
|
"mpegversion", G_TYPE_INT, mpegversion,
|
|
"stream-type", G_TYPE_STRING, "adts", NULL);
|
|
break;
|
|
}
|
|
|
|
GST_DEBUG ("No next frame found... (should have been at 0x%x)", len);
|
|
} else if (!memcmp (c.data, "ADIF", 4)) {
|
|
/* ADIF header */
|
|
gst_type_find_suggest_simple (tf, GST_TYPE_FIND_LIKELY, "audio/mpeg",
|
|
"framed", G_TYPE_BOOLEAN, FALSE, "mpegversion", G_TYPE_INT, 4,
|
|
"stream-format", G_TYPE_STRING, "adif", NULL);
|
|
break;
|
|
}
|
|
|
|
next:
|
|
|
|
data_scan_ctx_advance (tf, &c, 1);
|
|
}
|
|
}
|
|
|
|
/*** audio/mpeg version 1 ***/
|
|
|
|
/*
|
|
* The chance that random data is identified as a valid mp3 header is 63 / 2^18
|
|
* (0.024%) per try. This makes the function for calculating false positives
|
|
* 1 - (1 - ((63 / 2 ^18) ^ GST_MP3_TYPEFIND_MIN_HEADERS)) ^ buffersize)
|
|
* This has the following probabilities of false positives:
|
|
* datasize MIN_HEADERS
|
|
* (bytes) 1 2 3 4
|
|
* 4096 62.6% 0.02% 0% 0%
|
|
* 16384 98% 0.09% 0% 0%
|
|
* 1 MiB 100% 5.88% 0% 0%
|
|
* 1 GiB 100% 100% 1.44% 0%
|
|
* 1 TiB 100% 100% 100% 0.35%
|
|
* This means that the current choice (3 headers by most of the time 4096 byte
|
|
* buffers is pretty safe for now.
|
|
*
|
|
* The max. size of each frame is 1440 bytes, which means that for N frames to
|
|
* be detected, we need 1440 * GST_MP3_TYPEFIND_MIN_HEADERS + 3 bytes of data.
|
|
* Assuming we step into the stream right after the frame header, this
|
|
* means we need 1440 * (GST_MP3_TYPEFIND_MIN_HEADERS + 1) - 1 + 3 bytes
|
|
* of data (5762) to always detect any mp3.
|
|
*/
|
|
|
|
static const guint mp3types_bitrates[2][3][16] =
|
|
{ {{0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448,},
|
|
{0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384,},
|
|
{0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320,}},
|
|
{{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256,},
|
|
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,},
|
|
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,}},
|
|
};
|
|
|
|
static const guint mp3types_freqs[3][3] = { {11025, 12000, 8000},
|
|
{22050, 24000, 16000},
|
|
{44100, 48000, 32000}
|
|
};
|
|
|
|
static inline guint
|
|
mp3_type_frame_length_from_header (guint32 header, guint * put_layer,
|
|
guint * put_channels, guint * put_bitrate, guint * put_samplerate,
|
|
gboolean * may_be_free_format, gint possible_free_framelen)
|
|
{
|
|
guint bitrate, layer, length, mode, samplerate, version, channels;
|
|
|
|
if ((header & 0xffe00000) != 0xffe00000)
|
|
return 0;
|
|
|
|
/* we don't need extension, copyright, original or
|
|
* emphasis for the frame length */
|
|
header >>= 6;
|
|
|
|
/* mode */
|
|
mode = header & 0x3;
|
|
header >>= 3;
|
|
|
|
/* padding */
|
|
length = header & 0x1;
|
|
header >>= 1;
|
|
|
|
/* sampling frequency */
|
|
samplerate = header & 0x3;
|
|
if (samplerate == 3)
|
|
return 0;
|
|
header >>= 2;
|
|
|
|
/* bitrate index */
|
|
bitrate = header & 0xF;
|
|
if (bitrate == 0 && possible_free_framelen == -1) {
|
|
GST_LOG ("Possibly a free format mp3 - signalling");
|
|
*may_be_free_format = TRUE;
|
|
}
|
|
if (bitrate == 15 || (bitrate == 0 && possible_free_framelen == -1))
|
|
return 0;
|
|
|
|
/* ignore error correction, too */
|
|
header >>= 5;
|
|
|
|
/* layer */
|
|
layer = 4 - (header & 0x3);
|
|
if (layer == 4)
|
|
return 0;
|
|
header >>= 2;
|
|
|
|
/* version 0=MPEG2.5; 2=MPEG2; 3=MPEG1 */
|
|
version = header & 0x3;
|
|
if (version == 1)
|
|
return 0;
|
|
|
|
/* lookup */
|
|
channels = (mode == 3) ? 1 : 2;
|
|
samplerate = mp3types_freqs[version > 0 ? version - 1 : 0][samplerate];
|
|
if (bitrate == 0) {
|
|
if (layer == 1) {
|
|
length *= 4;
|
|
length += possible_free_framelen;
|
|
bitrate = length * samplerate / 48000;
|
|
} else {
|
|
length += possible_free_framelen;
|
|
bitrate = length * samplerate /
|
|
((layer == 3 && version != 3) ? 72000 : 144000);
|
|
}
|
|
} else {
|
|
/* calculating */
|
|
bitrate = mp3types_bitrates[version == 3 ? 0 : 1][layer - 1][bitrate];
|
|
if (layer == 1) {
|
|
length = ((12000 * bitrate / samplerate) + length) * 4;
|
|
} else {
|
|
length += ((layer == 3
|
|
&& version != 3) ? 72000 : 144000) * bitrate / samplerate;
|
|
}
|
|
}
|
|
|
|
GST_LOG ("mp3typefind: calculated mp3 frame length of %u bytes", length);
|
|
GST_LOG
|
|
("mp3typefind: samplerate = %u - bitrate = %u - layer = %u - version = %u"
|
|
" - channels = %u", samplerate, bitrate, layer, version, channels);
|
|
|
|
if (put_layer)
|
|
*put_layer = layer;
|
|
if (put_channels)
|
|
*put_channels = channels;
|
|
if (put_bitrate)
|
|
*put_bitrate = bitrate;
|
|
if (put_samplerate)
|
|
*put_samplerate = samplerate;
|
|
|
|
return length;
|
|
}
|
|
|
|
|
|
static GstStaticCaps mp3_caps = GST_STATIC_CAPS ("audio/mpeg, "
|
|
"mpegversion = (int) 1, layer = (int) [ 1, 3 ]");
|
|
#define MP3_CAPS (gst_static_caps_get(&mp3_caps))
|
|
/*
|
|
* random values for typefinding
|
|
* if no more data is available, we will return a probability of
|
|
* (found_headers/TRY_HEADERS) * (MAXIMUM * (TRY_SYNC - bytes_skipped)
|
|
* / TRY_SYNC)
|
|
* if found_headers >= MIN_HEADERS
|
|
*/
|
|
#define GST_MP3_TYPEFIND_MIN_HEADERS (2)
|
|
#define GST_MP3_TYPEFIND_TRY_HEADERS (5)
|
|
#define GST_MP3_TYPEFIND_TRY_SYNC (GST_TYPE_FIND_MAXIMUM * 100) /* 10kB */
|
|
#define GST_MP3_TYPEFIND_SYNC_SIZE (2048)
|
|
#define GST_MP3_WRONG_HEADER (10)
|
|
|
|
static void
|
|
mp3_type_find_at_offset (GstTypeFind * tf, guint64 start_off,
|
|
guint * found_layer, GstTypeFindProbability * found_prob)
|
|
{
|
|
guint8 *data = NULL;
|
|
guint8 *data_end = NULL;
|
|
guint size;
|
|
guint64 skipped;
|
|
gint last_free_offset = -1;
|
|
gint last_free_framelen = -1;
|
|
gboolean headerstart = TRUE;
|
|
|
|
*found_layer = 0;
|
|
*found_prob = 0;
|
|
|
|
size = 0;
|
|
skipped = 0;
|
|
while (skipped < GST_MP3_TYPEFIND_TRY_SYNC) {
|
|
if (size <= 0) {
|
|
size = GST_MP3_TYPEFIND_SYNC_SIZE * 2;
|
|
do {
|
|
size /= 2;
|
|
data = gst_type_find_peek (tf, skipped + start_off, size);
|
|
} while (size > 10 && !data);
|
|
if (!data)
|
|
break;
|
|
data_end = data + size;
|
|
}
|
|
if (*data == 0xFF) {
|
|
guint8 *head_data = NULL;
|
|
guint layer = 0, bitrate, samplerate, channels;
|
|
guint found = 0; /* number of valid headers found */
|
|
guint64 offset = skipped;
|
|
|
|
while (found < GST_MP3_TYPEFIND_TRY_HEADERS) {
|
|
guint32 head;
|
|
guint length;
|
|
guint prev_layer = 0, prev_bitrate = 0;
|
|
guint prev_channels = 0, prev_samplerate = 0;
|
|
gboolean free = FALSE;
|
|
|
|
if ((gint64) (offset - skipped + 4) >= 0 &&
|
|
data + offset - skipped + 4 < data_end) {
|
|
head_data = data + offset - skipped;
|
|
} else {
|
|
head_data = gst_type_find_peek (tf, offset + start_off, 4);
|
|
}
|
|
if (!head_data)
|
|
break;
|
|
head = GST_READ_UINT32_BE (head_data);
|
|
if (!(length = mp3_type_frame_length_from_header (head, &layer,
|
|
&channels, &bitrate, &samplerate, &free,
|
|
last_free_framelen))) {
|
|
if (free) {
|
|
if (last_free_offset == -1)
|
|
last_free_offset = offset;
|
|
else {
|
|
last_free_framelen = offset - last_free_offset;
|
|
offset = last_free_offset;
|
|
continue;
|
|
}
|
|
} else {
|
|
last_free_framelen = -1;
|
|
}
|
|
|
|
/* Mark the fact that we didn't find a valid header at the beginning */
|
|
if (found == 0)
|
|
headerstart = FALSE;
|
|
|
|
GST_LOG ("%d. header at offset %" G_GUINT64_FORMAT
|
|
" (0x%" G_GINT64_MODIFIER "x) was not an mp3 header "
|
|
"(possibly-free: %s)", found + 1, start_off + offset,
|
|
start_off + offset, free ? "yes" : "no");
|
|
break;
|
|
}
|
|
if ((prev_layer && prev_layer != layer) ||
|
|
/* (prev_bitrate && prev_bitrate != bitrate) || <-- VBR */
|
|
(prev_samplerate && prev_samplerate != samplerate) ||
|
|
(prev_channels && prev_channels != channels)) {
|
|
/* this means an invalid property, or a change, which might mean
|
|
* that this is not a mp3 but just a random bytestream. It could
|
|
* be a freaking funky encoded mp3 though. We'll just not count
|
|
* this header*/
|
|
prev_layer = layer;
|
|
prev_bitrate = bitrate;
|
|
prev_channels = channels;
|
|
prev_samplerate = samplerate;
|
|
} else {
|
|
found++;
|
|
GST_LOG ("found %d. header at offset %" G_GUINT64_FORMAT " (0x%"
|
|
G_GINT64_MODIFIER "X)", found, start_off + offset,
|
|
start_off + offset);
|
|
}
|
|
offset += length;
|
|
}
|
|
g_assert (found <= GST_MP3_TYPEFIND_TRY_HEADERS);
|
|
if (head_data == NULL &&
|
|
gst_type_find_peek (tf, offset + start_off - 1, 1) == NULL)
|
|
/* Incomplete last frame - don't count it. */
|
|
found--;
|
|
if (found == GST_MP3_TYPEFIND_TRY_HEADERS ||
|
|
(found >= GST_MP3_TYPEFIND_MIN_HEADERS && head_data == NULL)) {
|
|
/* we can make a valid guess */
|
|
guint probability = found * GST_TYPE_FIND_MAXIMUM *
|
|
(GST_MP3_TYPEFIND_TRY_SYNC - skipped) /
|
|
GST_MP3_TYPEFIND_TRY_HEADERS / GST_MP3_TYPEFIND_TRY_SYNC;
|
|
|
|
if (!headerstart
|
|
&& probability > (GST_TYPE_FIND_MINIMUM + GST_MP3_WRONG_HEADER))
|
|
probability -= GST_MP3_WRONG_HEADER;
|
|
if (probability < GST_TYPE_FIND_MINIMUM)
|
|
probability = GST_TYPE_FIND_MINIMUM;
|
|
if (start_off > 0)
|
|
probability /= 2;
|
|
|
|
GST_INFO
|
|
("audio/mpeg calculated %u = %u * %u / %u * (%u - %"
|
|
G_GUINT64_FORMAT ") / %u", probability, GST_TYPE_FIND_MAXIMUM,
|
|
found, GST_MP3_TYPEFIND_TRY_HEADERS, GST_MP3_TYPEFIND_TRY_SYNC,
|
|
(guint64) skipped, GST_MP3_TYPEFIND_TRY_SYNC);
|
|
/* make sure we're not id3 tagged */
|
|
head_data = gst_type_find_peek (tf, -128, 3);
|
|
if (head_data && (memcmp (head_data, "TAG", 3) == 0)) {
|
|
probability = 0;
|
|
}
|
|
g_assert (probability <= GST_TYPE_FIND_MAXIMUM);
|
|
|
|
*found_prob = probability;
|
|
if (probability > 0)
|
|
*found_layer = layer;
|
|
return;
|
|
}
|
|
}
|
|
data++;
|
|
skipped++;
|
|
size--;
|
|
}
|
|
}
|
|
|
|
static void
|
|
mp3_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
GstTypeFindProbability prob, mid_prob;
|
|
guint8 *data;
|
|
guint layer, mid_layer;
|
|
guint64 length;
|
|
|
|
mp3_type_find_at_offset (tf, 0, &layer, &prob);
|
|
length = gst_type_find_get_length (tf);
|
|
|
|
if (length == 0 || length == (guint64) - 1) {
|
|
if (prob != 0)
|
|
goto suggest;
|
|
return;
|
|
}
|
|
|
|
/* if we're pretty certain already, skip the additional check */
|
|
if (prob >= GST_TYPE_FIND_LIKELY)
|
|
goto suggest;
|
|
|
|
mp3_type_find_at_offset (tf, length / 2, &mid_layer, &mid_prob);
|
|
|
|
if (mid_prob > 0) {
|
|
if (prob == 0) {
|
|
GST_LOG ("detected audio/mpeg only in the middle (p=%u)", mid_prob);
|
|
layer = mid_layer;
|
|
prob = mid_prob;
|
|
goto suggest;
|
|
}
|
|
|
|
if (layer != mid_layer) {
|
|
GST_WARNING ("audio/mpeg layer discrepancy: %u vs. %u", layer, mid_layer);
|
|
return; /* FIXME: or should we just go with the one in the middle? */
|
|
}
|
|
|
|
/* detected mpeg audio both in middle of the file and at the start */
|
|
prob = (prob + mid_prob) / 2;
|
|
goto suggest;
|
|
}
|
|
|
|
/* let's see if there's a valid header right at the start */
|
|
data = gst_type_find_peek (tf, 0, 4); /* use min. frame size? */
|
|
if (data && mp3_type_frame_length_from_header (GST_READ_UINT32_BE (data),
|
|
&layer, NULL, NULL, NULL, NULL, 0) != 0) {
|
|
if (prob == 0)
|
|
prob = GST_TYPE_FIND_POSSIBLE - 10;
|
|
else
|
|
prob = MAX (GST_TYPE_FIND_POSSIBLE - 10, prob + 10);
|
|
}
|
|
|
|
if (prob > 0)
|
|
goto suggest;
|
|
|
|
return;
|
|
|
|
suggest:
|
|
{
|
|
g_return_if_fail (layer >= 1 && layer <= 3);
|
|
|
|
gst_type_find_suggest_simple (tf, prob, "audio/mpeg",
|
|
"mpegversion", G_TYPE_INT, 1, "layer", G_TYPE_INT, layer, NULL);
|
|
}
|
|
}
|
|
|
|
/*** audio/x-musepack ***/
|
|
|
|
static GstStaticCaps musepack_caps =
|
|
GST_STATIC_CAPS ("audio/x-musepack, streamversion= (int) { 7, 8 }");
|
|
|
|
#define MUSEPACK_CAPS (gst_static_caps_get(&musepack_caps))
|
|
static void
|
|
musepack_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
GstTypeFindProbability prop = GST_TYPE_FIND_MINIMUM;
|
|
gint streamversion = -1;
|
|
|
|
if (data && memcmp (data, "MP+", 3) == 0) {
|
|
streamversion = 7;
|
|
if ((data[3] & 0x7f) == 7) {
|
|
prop = GST_TYPE_FIND_MAXIMUM;
|
|
} else {
|
|
prop = GST_TYPE_FIND_LIKELY + 10;
|
|
}
|
|
} else if (data && memcmp (data, "MPCK", 4) == 0) {
|
|
streamversion = 8;
|
|
prop = GST_TYPE_FIND_MAXIMUM;
|
|
}
|
|
|
|
if (streamversion != -1) {
|
|
gst_type_find_suggest_simple (tf, prop, "audio/x-musepack",
|
|
"streamversion", G_TYPE_INT, streamversion, NULL);
|
|
}
|
|
}
|
|
|
|
/*** audio/x-ac3 ***/
|
|
/* This should be audio/ac3, but isn't for backwards compatibility */
|
|
static GstStaticCaps ac3_caps = GST_STATIC_CAPS ("audio/x-ac3");
|
|
|
|
#define AC3_CAPS (gst_static_caps_get(&ac3_caps))
|
|
|
|
struct ac3_frmsize
|
|
{
|
|
unsigned short bit_rate;
|
|
unsigned short frm_size[3];
|
|
};
|
|
|
|
static const struct ac3_frmsize ac3_frmsizecod_tbl[] = {
|
|
{32, {64, 69, 96}},
|
|
{32, {64, 70, 96}},
|
|
{40, {80, 87, 120}},
|
|
{40, {80, 88, 120}},
|
|
{48, {96, 104, 144}},
|
|
{48, {96, 105, 144}},
|
|
{56, {112, 121, 168}},
|
|
{56, {112, 122, 168}},
|
|
{64, {128, 139, 192}},
|
|
{64, {128, 140, 192}},
|
|
{80, {160, 174, 240}},
|
|
{80, {160, 175, 240}},
|
|
{96, {192, 208, 288}},
|
|
{96, {192, 209, 288}},
|
|
{112, {224, 243, 336}},
|
|
{112, {224, 244, 336}},
|
|
{128, {256, 278, 384}},
|
|
{128, {256, 279, 384}},
|
|
{160, {320, 348, 480}},
|
|
{160, {320, 349, 480}},
|
|
{192, {384, 417, 576}},
|
|
{192, {384, 418, 576}},
|
|
{224, {448, 487, 672}},
|
|
{224, {448, 488, 672}},
|
|
{256, {512, 557, 768}},
|
|
{256, {512, 558, 768}},
|
|
{320, {640, 696, 960}},
|
|
{320, {640, 697, 960}},
|
|
{384, {768, 835, 1152}},
|
|
{384, {768, 836, 1152}},
|
|
{448, {896, 975, 1344}},
|
|
{448, {896, 976, 1344}},
|
|
{512, {1024, 1114, 1536}},
|
|
{512, {1024, 1115, 1536}},
|
|
{576, {1152, 1253, 1728}},
|
|
{576, {1152, 1254, 1728}},
|
|
{640, {1280, 1393, 1920}},
|
|
{640, {1280, 1394, 1920}}
|
|
};
|
|
|
|
|
|
static void
|
|
ac3_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 1024);
|
|
gint offset = 0;
|
|
|
|
/* Search for an ac3 frame; not neccesarily right at the start, but give it
|
|
* a lower probability if not found right at the start. Check that the
|
|
* frame is followed by a second frame at the expected offset.
|
|
* We could also check the two ac3 CRCs, but we don't do that right now */
|
|
while (data && offset < 1024) {
|
|
if (data[0] == 0x0b && data[1] == 0x77) {
|
|
guint fscod = (data[4] >> 6) & 0x03;
|
|
guint frmsizecod = data[4] & 0x3f;
|
|
|
|
if (fscod < 3 && frmsizecod < 38) {
|
|
guint frame_size = ac3_frmsizecod_tbl[frmsizecod].frm_size[fscod];
|
|
|
|
data = gst_type_find_peek (tf, offset + frame_size * 2, 5);
|
|
|
|
if (data) {
|
|
if (data[0] == 0x0b && data[1] == 0x77) {
|
|
guint fscod2 = (data[4] >> 6) & 0x03;
|
|
guint frmsizecod2 = data[4] & 0x3f;
|
|
|
|
if (fscod == fscod2 && frmsizecod == frmsizecod2) {
|
|
int prob;
|
|
|
|
if (offset == 0)
|
|
prob = GST_TYPE_FIND_MAXIMUM;
|
|
else
|
|
prob = GST_TYPE_FIND_NEARLY_CERTAIN;
|
|
gst_type_find_suggest (tf, prob, AC3_CAPS);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
offset++;
|
|
}
|
|
}
|
|
|
|
/*** gsm ***/
|
|
|
|
/* can only be detected by using the extension, in which case we use the default
|
|
* GSM properties */
|
|
static GstStaticCaps gsm_caps =
|
|
GST_STATIC_CAPS ("audio/x-gsm, rate=8000, channels=1");
|
|
|
|
#define GSM_CAPS (gst_static_caps_get(&gsm_caps))
|
|
|
|
/*** wavpack ***/
|
|
|
|
static GstStaticCaps wavpack_caps =
|
|
GST_STATIC_CAPS ("audio/x-wavpack, framed = (boolean) false");
|
|
|
|
#define WAVPACK_CAPS (gst_static_caps_get(&wavpack_caps))
|
|
|
|
static GstStaticCaps wavpack_correction_caps =
|
|
GST_STATIC_CAPS ("audio/x-wavpack-correction, framed = (boolean) false");
|
|
|
|
#define WAVPACK_CORRECTION_CAPS (gst_static_caps_get(&wavpack_correction_caps))
|
|
|
|
static void
|
|
wavpack_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint64 offset;
|
|
guint32 blocksize;
|
|
guint8 *data;
|
|
|
|
data = gst_type_find_peek (tf, 0, 32);
|
|
if (!data)
|
|
return;
|
|
|
|
if (data[0] != 'w' || data[1] != 'v' || data[2] != 'p' || data[3] != 'k')
|
|
return;
|
|
|
|
/* Note: wavpack blocks can be fairly large (easily 60-110k), possibly
|
|
* larger than the max. limits imposed by certain typefinding elements
|
|
* like id3demux or apedemux, so typefinding is most likely only going to
|
|
* work in pull-mode */
|
|
blocksize = GST_READ_UINT32_LE (data + 4);
|
|
GST_LOG ("wavpack header, blocksize=0x%04x", blocksize);
|
|
offset = 32;
|
|
while (offset < 32 + blocksize) {
|
|
guint32 sublen;
|
|
|
|
/* get chunk header */
|
|
GST_LOG ("peeking at chunk at offset 0x%04x", (guint) offset);
|
|
data = gst_type_find_peek (tf, offset, 4);
|
|
if (data == NULL)
|
|
break;
|
|
sublen = ((guint32) data[1]) << 1;
|
|
if (data[0] & 0x80) {
|
|
sublen |= (((guint32) data[2]) << 9) | (((guint32) data[3]) << 17);
|
|
sublen += 1 + 3; /* id + length */
|
|
} else {
|
|
sublen += 1 + 1; /* id + length */
|
|
}
|
|
if (sublen > blocksize - offset + 32) {
|
|
GST_LOG ("chunk length too big (%u > %" G_GUINT64_FORMAT ")", sublen,
|
|
blocksize - offset);
|
|
break;
|
|
}
|
|
if ((data[0] & 0x20) == 0) {
|
|
switch (data[0] & 0x0f) {
|
|
case 0xa: /* ID_WV_BITSTREAM */
|
|
case 0xc: /* ID_WVX_BITSTREAM */
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, WAVPACK_CAPS);
|
|
return;
|
|
case 0xb: /* ID_WVC_BITSTREAM */
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY,
|
|
WAVPACK_CORRECTION_CAPS);
|
|
return;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
offset += sublen;
|
|
}
|
|
}
|
|
|
|
/*** application/postscrip ***/
|
|
static GstStaticCaps postscript_caps =
|
|
GST_STATIC_CAPS ("application/postscript");
|
|
|
|
#define POSTSCRIPT_CAPS (gst_static_caps_get(&postscript_caps))
|
|
|
|
static void
|
|
postscript_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 3);
|
|
if (!data)
|
|
return;
|
|
|
|
if (data[0] == 0x04)
|
|
data++;
|
|
if (data[0] == '%' && data[1] == '!')
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, POSTSCRIPT_CAPS);
|
|
|
|
}
|
|
|
|
/*** image/svg+xml ***/
|
|
static GstStaticCaps svg_caps = GST_STATIC_CAPS ("image/svg+xml");
|
|
|
|
#define SVG_CAPS (gst_static_caps_get(&svg_caps))
|
|
|
|
static void
|
|
svg_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
static const gchar svg_doctype[] = "!DOCTYPE svg";
|
|
static const gchar svg_tag[] = "<svg";
|
|
DataScanCtx c = { 0, NULL, 0 };
|
|
|
|
while (c.offset <= 1024) {
|
|
if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 12)))
|
|
break;
|
|
|
|
if (memcmp (svg_doctype, c.data, 12) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SVG_CAPS);
|
|
return;
|
|
} else if (memcmp (svg_tag, c.data, 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, SVG_CAPS);
|
|
return;
|
|
}
|
|
data_scan_ctx_advance (tf, &c, 1);
|
|
}
|
|
}
|
|
|
|
/*** multipart/x-mixed-replace mimestream ***/
|
|
|
|
static GstStaticCaps multipart_caps =
|
|
GST_STATIC_CAPS ("multipart/x-mixed-replace");
|
|
#define MULTIPART_CAPS gst_static_caps_get(&multipart_caps)
|
|
|
|
/* multipart/x-mixed replace is:
|
|
* <maybe some whitespace>--<some ascii chars>[\r]\n
|
|
* <more ascii chars>[\r]\nContent-type:<more ascii>[\r]\n */
|
|
static void
|
|
multipart_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data;
|
|
guint8 *x;
|
|
|
|
#define MULTIPART_MAX_BOUNDARY_OFFSET 16
|
|
data = gst_type_find_peek (tf, 0, MULTIPART_MAX_BOUNDARY_OFFSET);
|
|
if (!data)
|
|
return;
|
|
|
|
for (x = data;
|
|
x - data < MULTIPART_MAX_BOUNDARY_OFFSET - 2 && g_ascii_isspace (*x);
|
|
x++);
|
|
if (x[0] != '-' || x[1] != '-')
|
|
return;
|
|
|
|
/* Could be okay, peek what should be enough for a complete header */
|
|
#define MULTIPART_MAX_HEADER_SIZE 256
|
|
data = gst_type_find_peek (tf, 0, MULTIPART_MAX_HEADER_SIZE);
|
|
if (!data)
|
|
return;
|
|
|
|
for (x = data; x - data < MULTIPART_MAX_HEADER_SIZE - 14; x++) {
|
|
if (!isascii (*x)) {
|
|
return;
|
|
}
|
|
if (*x == '\n' &&
|
|
!g_ascii_strncasecmp ("content-type:", (gchar *) x + 1, 13)) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MULTIPART_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** video/mpeg systemstream ***/
|
|
static GstStaticCaps mpeg_sys_caps = GST_STATIC_CAPS ("video/mpeg, "
|
|
"systemstream = (boolean) true, mpegversion = (int) [ 1, 2 ]");
|
|
|
|
#define MPEG_SYS_CAPS gst_static_caps_get(&mpeg_sys_caps)
|
|
#define IS_MPEG_HEADER(data) (G_UNLIKELY((((guint8 *)(data))[0] == 0x00) && \
|
|
(((guint8 *)(data))[1] == 0x00) && \
|
|
(((guint8 *)(data))[2] == 0x01)))
|
|
|
|
#define IS_MPEG_PACK_CODE(b) ((b) == 0xBA)
|
|
#define IS_MPEG_SYS_CODE(b) ((b) == 0xBB)
|
|
#define IS_MPEG_PACK_HEADER(data) (IS_MPEG_HEADER (data) && \
|
|
IS_MPEG_PACK_CODE (((guint8 *)(data))[3]))
|
|
|
|
#define IS_MPEG_PES_CODE(b) (((b) & 0xF0) == 0xE0 || ((b) & 0xF0) == 0xC0 || \
|
|
(b) >= 0xBD)
|
|
#define IS_MPEG_PES_HEADER(data) (IS_MPEG_HEADER (data) && \
|
|
IS_MPEG_PES_CODE (((guint8 *)(data))[3]))
|
|
|
|
#define MPEG2_MAX_PROBE_LENGTH (128 * 1024) /* 128kB should be 64 packs of the
|
|
* most common 2kB pack size. */
|
|
|
|
#define MPEG2_MIN_SYS_HEADERS 2
|
|
#define MPEG2_MAX_SYS_HEADERS 5
|
|
|
|
static gboolean
|
|
mpeg_sys_is_valid_pack (GstTypeFind * tf, const guint8 * data, guint len,
|
|
guint * pack_size)
|
|
{
|
|
/* Check the pack header @ offset for validity, assuming that the 4 byte header
|
|
* itself has already been checked. */
|
|
guint8 stuff_len;
|
|
|
|
if (len < 12)
|
|
return FALSE;
|
|
|
|
/* Check marker bits */
|
|
if ((data[4] & 0xC4) == 0x44) {
|
|
/* MPEG-2 PACK */
|
|
if (len < 14)
|
|
return FALSE;
|
|
|
|
if ((data[6] & 0x04) != 0x04 ||
|
|
(data[8] & 0x04) != 0x04 ||
|
|
(data[9] & 0x01) != 0x01 || (data[12] & 0x03) != 0x03)
|
|
return FALSE;
|
|
|
|
stuff_len = data[13] & 0x07;
|
|
|
|
/* Check the following header bytes, if we can */
|
|
if ((14 + stuff_len + 4) <= len) {
|
|
if (!IS_MPEG_HEADER (data + 14 + stuff_len))
|
|
return FALSE;
|
|
}
|
|
if (pack_size)
|
|
*pack_size = 14 + stuff_len;
|
|
return TRUE;
|
|
} else if ((data[4] & 0xF1) == 0x21) {
|
|
/* MPEG-1 PACK */
|
|
if ((data[6] & 0x01) != 0x01 ||
|
|
(data[8] & 0x01) != 0x01 ||
|
|
(data[9] & 0x80) != 0x80 || (data[11] & 0x01) != 0x01)
|
|
return FALSE;
|
|
|
|
/* Check the following header bytes, if we can */
|
|
if ((12 + 4) <= len) {
|
|
if (!IS_MPEG_HEADER (data + 12))
|
|
return FALSE;
|
|
}
|
|
if (pack_size)
|
|
*pack_size = 12;
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
mpeg_sys_is_valid_pes (GstTypeFind * tf, guint8 * data, guint len,
|
|
guint * pack_size)
|
|
{
|
|
guint pes_packet_len;
|
|
|
|
/* Check the PES header at the given position, assuming the header code itself
|
|
* was already checked */
|
|
if (len < 6)
|
|
return FALSE;
|
|
|
|
/* For MPEG Program streams, unbounded PES is not allowed, so we must have a
|
|
* valid length present */
|
|
pes_packet_len = GST_READ_UINT16_BE (data + 4);
|
|
if (pes_packet_len == 0)
|
|
return FALSE;
|
|
|
|
/* Check the following header, if we can */
|
|
if (6 + pes_packet_len + 4 <= len) {
|
|
if (!IS_MPEG_HEADER (data + 6 + pes_packet_len))
|
|
return FALSE;
|
|
}
|
|
|
|
if (pack_size)
|
|
*pack_size = 6 + pes_packet_len;
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
mpeg_sys_is_valid_sys (GstTypeFind * tf, guint8 * data, guint len,
|
|
guint * pack_size)
|
|
{
|
|
guint sys_hdr_len;
|
|
|
|
/* Check the System header at the given position, assuming the header code itself
|
|
* was already checked */
|
|
if (len < 6)
|
|
return FALSE;
|
|
sys_hdr_len = GST_READ_UINT16_BE (data + 4);
|
|
if (sys_hdr_len < 6)
|
|
return FALSE;
|
|
|
|
/* Check the following header, if we can */
|
|
if (6 + sys_hdr_len + 4 <= len) {
|
|
if (!IS_MPEG_HEADER (data + 6 + sys_hdr_len))
|
|
return FALSE;
|
|
}
|
|
|
|
if (pack_size)
|
|
*pack_size = 6 + sys_hdr_len;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* calculation of possibility to identify random data as mpeg systemstream:
|
|
* bits that must match in header detection: 32 (or more)
|
|
* chance that random data is identifed: 1/2^32
|
|
* chance that MPEG2_MIN_PACK_HEADERS headers are identified:
|
|
* 1/2^(32*MPEG2_MIN_PACK_HEADERS)
|
|
* chance that this happens in MPEG2_MAX_PROBE_LENGTH bytes:
|
|
* 1-(1+1/2^(32*MPEG2_MIN_PACK_HEADERS)^MPEG2_MAX_PROBE_LENGTH)
|
|
* for current values:
|
|
* 1-(1+1/2^(32*4)^101024)
|
|
* = <some_number>
|
|
* Since we also check marker bits and pes packet lengths, this probability is a
|
|
* very coarse upper bound.
|
|
*/
|
|
static void
|
|
mpeg_sys_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data, *data0, *first_sync, *end;
|
|
gint mpegversion = 0;
|
|
guint pack_headers = 0;
|
|
guint pes_headers = 0;
|
|
guint pack_size;
|
|
guint since_last_sync = 0;
|
|
guint32 sync_word = 0xffffffff;
|
|
|
|
G_STMT_START {
|
|
gint len;
|
|
|
|
len = MPEG2_MAX_PROBE_LENGTH;
|
|
do {
|
|
len = len / 2;
|
|
data = gst_type_find_peek (tf, 0, 5 + len);
|
|
} while (data == NULL && len >= 32);
|
|
|
|
if (!data)
|
|
return;
|
|
|
|
end = data + len;
|
|
}
|
|
G_STMT_END;
|
|
|
|
data0 = data;
|
|
first_sync = NULL;
|
|
|
|
while (data < end) {
|
|
sync_word <<= 8;
|
|
if (sync_word == 0x00000100) {
|
|
/* Found potential sync word */
|
|
if (first_sync == NULL)
|
|
first_sync = data - 3;
|
|
|
|
if (since_last_sync > 4) {
|
|
/* If more than 4 bytes since the last sync word, reset our counters,
|
|
* as we're only interested in counting contiguous packets */
|
|
pes_headers = pack_headers = 0;
|
|
}
|
|
pack_size = 0;
|
|
|
|
if (IS_MPEG_PACK_CODE (data[0])) {
|
|
if ((data[1] & 0xC0) == 0x40) {
|
|
/* MPEG-2 */
|
|
mpegversion = 2;
|
|
} else if ((data[1] & 0xF0) == 0x20) {
|
|
mpegversion = 1;
|
|
}
|
|
if (mpegversion != 0 &&
|
|
mpeg_sys_is_valid_pack (tf, data - 3, end - data + 3, &pack_size)) {
|
|
pack_headers++;
|
|
}
|
|
} else if (IS_MPEG_PES_CODE (data[0])) {
|
|
/* PES stream */
|
|
if (mpeg_sys_is_valid_pes (tf, data - 3, end - data + 3, &pack_size)) {
|
|
pes_headers++;
|
|
if (mpegversion == 0)
|
|
mpegversion = 2;
|
|
}
|
|
} else if (IS_MPEG_SYS_CODE (data[0])) {
|
|
if (mpeg_sys_is_valid_sys (tf, data - 3, end - data + 3, &pack_size)) {
|
|
pack_headers++;
|
|
}
|
|
}
|
|
|
|
/* If we found a packet with a known size, skip the bytes in it and loop
|
|
* around to check the next packet. */
|
|
if (pack_size != 0) {
|
|
data += pack_size - 3;
|
|
sync_word = 0xffffffff;
|
|
since_last_sync = 0;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
sync_word |= data[0];
|
|
since_last_sync++;
|
|
data++;
|
|
|
|
/* If we have found MAX headers, and *some* were pes headers (pack headers
|
|
* are optional in an mpeg system stream) then return our high-probability
|
|
* result */
|
|
if (pes_headers > 0 && (pack_headers + pes_headers) > MPEG2_MAX_SYS_HEADERS)
|
|
goto suggest;
|
|
}
|
|
|
|
/* If we at least saw MIN headers, and *some* were pes headers (pack headers
|
|
* are optional in an mpeg system stream) then return a lower-probability
|
|
* result */
|
|
if (pes_headers > 0 && (pack_headers + pes_headers) > MPEG2_MIN_SYS_HEADERS)
|
|
goto suggest;
|
|
|
|
return;
|
|
suggest:
|
|
{
|
|
guint prob;
|
|
|
|
prob = GST_TYPE_FIND_POSSIBLE + (10 * (pack_headers + pes_headers));
|
|
prob = MIN (prob, GST_TYPE_FIND_MAXIMUM);
|
|
|
|
/* lower probability if the first packet wasn't right at the start */
|
|
if (data0 != first_sync && prob >= 10)
|
|
prob -= 10;
|
|
|
|
GST_LOG ("Suggesting MPEG %d system stream, %d packs, %d pes, prob %u%%\n",
|
|
mpegversion, pack_headers, pes_headers, prob);
|
|
|
|
gst_type_find_suggest_simple (tf, prob, "video/mpeg",
|
|
"systemstream", G_TYPE_BOOLEAN, TRUE,
|
|
"mpegversion", G_TYPE_INT, mpegversion, NULL);
|
|
}
|
|
};
|
|
|
|
/*** video/mpegts Transport Stream ***/
|
|
static GstStaticCaps mpegts_caps = GST_STATIC_CAPS ("video/mpegts, "
|
|
"systemstream = (boolean) true, packetsize = (int) [ 188, 208 ]");
|
|
#define MPEGTS_CAPS gst_static_caps_get(&mpegts_caps)
|
|
|
|
#define GST_MPEGTS_TYPEFIND_MIN_HEADERS 4
|
|
#define GST_MPEGTS_TYPEFIND_MAX_HEADERS 10
|
|
#define GST_MPEGTS_MAX_PACKET_SIZE 208
|
|
#define GST_MPEGTS_TYPEFIND_SYNC_SIZE \
|
|
(GST_MPEGTS_TYPEFIND_MIN_HEADERS * GST_MPEGTS_MAX_PACKET_SIZE)
|
|
#define GST_MPEGTS_TYPEFIND_MAX_SYNC \
|
|
(GST_MPEGTS_TYPEFIND_MAX_HEADERS * GST_MPEGTS_MAX_PACKET_SIZE)
|
|
|
|
#define MPEGTS_HDR_SIZE 4
|
|
/* Check for sync byte, error_indicator == 0 and packet has payload */
|
|
#define IS_MPEGTS_HEADER(data) (((data)[0] == 0x47) && \
|
|
(((data)[1] & 0x80) == 0x00) && \
|
|
(((data)[3] & 0x10) == 0x10))
|
|
|
|
/* Helper function to search ahead at intervals of packet_size for mpegts
|
|
* headers */
|
|
static gint
|
|
mpeg_ts_probe_headers (GstTypeFind * tf, guint64 offset, gint packet_size)
|
|
{
|
|
/* We always enter this function having found at least one header already */
|
|
gint found = 1;
|
|
guint8 *data = NULL;
|
|
|
|
while (found < GST_MPEGTS_TYPEFIND_MAX_HEADERS) {
|
|
offset += packet_size;
|
|
|
|
data = gst_type_find_peek (tf, offset, MPEGTS_HDR_SIZE);
|
|
if (data == NULL || !IS_MPEGTS_HEADER (data))
|
|
return found;
|
|
|
|
found++;
|
|
}
|
|
|
|
return found;
|
|
}
|
|
|
|
/* Try and detect at least 4 packets in at most 10 packets worth of
|
|
* data. Need to try several possible packet sizes */
|
|
static void
|
|
mpeg_ts_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
/* TS packet sizes to test: normal, DVHS packet size and
|
|
* FEC with 16 or 20 byte codes packet size. */
|
|
const gint pack_sizes[] = { 188, 192, 204, 208 };
|
|
const gint n_pack_sizes = sizeof (pack_sizes) / sizeof (gint);
|
|
|
|
guint8 *data = NULL;
|
|
guint size = 0;
|
|
guint64 skipped = 0;
|
|
|
|
while (skipped < GST_MPEGTS_TYPEFIND_MAX_SYNC) {
|
|
if (size < MPEGTS_HDR_SIZE) {
|
|
data = gst_type_find_peek (tf, skipped, GST_MPEGTS_TYPEFIND_SYNC_SIZE);
|
|
if (!data)
|
|
break;
|
|
size = GST_MPEGTS_TYPEFIND_SYNC_SIZE;
|
|
}
|
|
|
|
/* Have at least MPEGTS_HDR_SIZE bytes at this point */
|
|
if (IS_MPEGTS_HEADER (data)) {
|
|
gint p;
|
|
|
|
for (p = 0; p < n_pack_sizes; p++) {
|
|
gint found;
|
|
|
|
/* Probe ahead at size pack_sizes[p] */
|
|
found = mpeg_ts_probe_headers (tf, skipped, pack_sizes[p]);
|
|
if (found >= GST_MPEGTS_TYPEFIND_MIN_HEADERS) {
|
|
gint probability;
|
|
|
|
/* found at least 4 headers. 10 headers = MAXIMUM probability.
|
|
* Arbitrarily, I assigned 10% probability for each header we
|
|
* found, 40% -> 100% */
|
|
probability = MIN (10 * found, GST_TYPE_FIND_MAXIMUM);
|
|
|
|
gst_type_find_suggest_simple (tf, probability, "video/mpegts",
|
|
"systemstream", G_TYPE_BOOLEAN, TRUE,
|
|
"packetsize", G_TYPE_INT, pack_sizes[p], NULL);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
data++;
|
|
skipped++;
|
|
size--;
|
|
}
|
|
}
|
|
|
|
#define GST_MPEGVID_TYPEFIND_TRY_PICTURES 6
|
|
#define GST_MPEGVID_TYPEFIND_TRY_SYNC (100 * 1024) /* 100 kB */
|
|
|
|
/* Scan ahead a maximum of max_extra_offset bytes until the next IS_MPEG_HEADER
|
|
* offset. After the call, offset will be after the 0x000001, i.e. at the 4th
|
|
* byte of the MPEG header. Returns TRUE if a header was found, FALSE if not.
|
|
*/
|
|
static gboolean
|
|
mpeg_find_next_header (GstTypeFind * tf, DataScanCtx * c,
|
|
guint64 max_extra_offset)
|
|
{
|
|
guint64 extra_offset;
|
|
|
|
for (extra_offset = 0; extra_offset <= max_extra_offset; ++extra_offset) {
|
|
if (!data_scan_ctx_ensure_data (tf, c, 4))
|
|
return FALSE;
|
|
if (IS_MPEG_HEADER (c->data)) {
|
|
data_scan_ctx_advance (tf, c, 3);
|
|
return TRUE;
|
|
}
|
|
data_scan_ctx_advance (tf, c, 1);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
/*** video/mpeg MPEG-4 elementary video stream ***/
|
|
|
|
static GstStaticCaps mpeg4_video_caps = GST_STATIC_CAPS ("video/mpeg, "
|
|
"systemstream=(boolean)false, mpegversion=4, parsed=(boolean)false");
|
|
#define MPEG4_VIDEO_CAPS gst_static_caps_get(&mpeg4_video_caps)
|
|
|
|
/*
|
|
* This typefind is based on the elementary video header defined in
|
|
* http://xhelmboyx.tripod.com/formats/mpeg-layout.txt
|
|
* In addition, it allows the visual object sequence header to be
|
|
* absent, and even the VOS header to be absent. In the latter case,
|
|
* a number of VOPs have to be present.
|
|
*/
|
|
static void
|
|
mpeg4_video_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
DataScanCtx c = { 0, NULL, 0 };
|
|
gboolean seen_vios_at_0 = FALSE;
|
|
gboolean seen_vios = FALSE;
|
|
gboolean seen_vos = FALSE;
|
|
gboolean seen_vol = FALSE;
|
|
guint num_vop_headers = 0;
|
|
guint8 sc;
|
|
|
|
while (c.offset < GST_MPEGVID_TYPEFIND_TRY_SYNC) {
|
|
if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES)
|
|
break;
|
|
|
|
if (!mpeg_find_next_header (tf, &c,
|
|
GST_MPEGVID_TYPEFIND_TRY_SYNC - c.offset))
|
|
break;
|
|
|
|
sc = c.data[0];
|
|
|
|
/* visual_object_sequence_start_code */
|
|
if (sc == 0xB0) {
|
|
if (seen_vios)
|
|
break; /* Terminate at second vios */
|
|
if (c.offset == 0)
|
|
seen_vios_at_0 = TRUE;
|
|
seen_vios = TRUE;
|
|
data_scan_ctx_advance (tf, &c, 2);
|
|
if (!mpeg_find_next_header (tf, &c, 0))
|
|
break;
|
|
|
|
sc = c.data[0];
|
|
|
|
/* Optional metadata */
|
|
if (sc == 0xB2)
|
|
if (!mpeg_find_next_header (tf, &c, 24))
|
|
break;
|
|
}
|
|
|
|
/* visual_object_start_code (consider it optional) */
|
|
if (sc == 0xB5) {
|
|
data_scan_ctx_advance (tf, &c, 2);
|
|
/* may contain ID marker and YUV clamping */
|
|
if (!mpeg_find_next_header (tf, &c, 7))
|
|
break;
|
|
|
|
sc = c.data[0];
|
|
}
|
|
|
|
/* video_object_start_code */
|
|
if (sc <= 0x1F) {
|
|
if (seen_vos)
|
|
break; /* Terminate at second vos */
|
|
seen_vos = TRUE;
|
|
data_scan_ctx_advance (tf, &c, 2);
|
|
continue;
|
|
}
|
|
|
|
/* video_object_layer_start_code */
|
|
if (sc >= 0x20 && sc <= 0x2F) {
|
|
seen_vol = TRUE;
|
|
data_scan_ctx_advance (tf, &c, 5);
|
|
continue;
|
|
}
|
|
|
|
/* video_object_plane_start_code */
|
|
if (sc == 0xB6) {
|
|
num_vop_headers++;
|
|
data_scan_ctx_advance (tf, &c, 2);
|
|
continue;
|
|
}
|
|
|
|
/* Unknown start code. */
|
|
}
|
|
|
|
if (num_vop_headers > 0 || seen_vol) {
|
|
GstTypeFindProbability probability = 0;
|
|
|
|
GST_LOG ("Found %d pictures, vios: %d, vos:%d, vol:%d", num_vop_headers,
|
|
seen_vios, seen_vos, seen_vol);
|
|
|
|
if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_vios_at_0
|
|
&& seen_vos && seen_vol)
|
|
probability = GST_TYPE_FIND_MAXIMUM - 1;
|
|
else if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_vios
|
|
&& seen_vos && seen_vol)
|
|
probability = GST_TYPE_FIND_NEARLY_CERTAIN - 1;
|
|
else if (seen_vios_at_0 && seen_vos && seen_vol)
|
|
probability = GST_TYPE_FIND_NEARLY_CERTAIN - 6;
|
|
else if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_vos
|
|
&& seen_vol)
|
|
probability = GST_TYPE_FIND_NEARLY_CERTAIN - 6;
|
|
else if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_vol)
|
|
probability = GST_TYPE_FIND_NEARLY_CERTAIN - 9;
|
|
else if (num_vop_headers >= GST_MPEGVID_TYPEFIND_TRY_PICTURES)
|
|
probability = GST_TYPE_FIND_LIKELY - 1;
|
|
else if (num_vop_headers > 2 && seen_vios && seen_vos && seen_vol)
|
|
probability = GST_TYPE_FIND_LIKELY - 9;
|
|
else if (seen_vios && seen_vos && seen_vol)
|
|
probability = GST_TYPE_FIND_LIKELY - 20;
|
|
else if (num_vop_headers > 0 && seen_vos && seen_vol)
|
|
probability = GST_TYPE_FIND_POSSIBLE;
|
|
else if (num_vop_headers > 0)
|
|
probability = GST_TYPE_FIND_POSSIBLE - 10;
|
|
else if (seen_vos && seen_vol)
|
|
probability = GST_TYPE_FIND_POSSIBLE - 20;
|
|
|
|
gst_type_find_suggest (tf, probability, MPEG4_VIDEO_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** video/x-h264 H264 elementary video stream ***/
|
|
|
|
static GstStaticCaps h264_video_caps = GST_STATIC_CAPS ("video/x-h264");
|
|
|
|
#define H264_VIDEO_CAPS gst_static_caps_get(&h264_video_caps)
|
|
|
|
#define H264_MAX_PROBE_LENGTH (128 * 1024) /* 128kB for HD should be enough. */
|
|
|
|
static void
|
|
h264_video_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
DataScanCtx c = { 0, NULL, 0 };
|
|
|
|
/* Stream consists of: a series of sync codes (00 00 00 01) followed
|
|
* by NALs
|
|
*/
|
|
int stat_slice = 0;
|
|
int stat_dpa = 0;
|
|
int stat_dpb = 0;
|
|
int stat_dpc = 0;
|
|
int stat_idr = 0;
|
|
int stat_sps = 0;
|
|
int stat_pps = 0;
|
|
int nut, ref;
|
|
|
|
while (c.offset < H264_MAX_PROBE_LENGTH) {
|
|
if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 4)))
|
|
break;
|
|
|
|
if (IS_MPEG_HEADER (c.data)) {
|
|
nut = c.data[3] & 0x9f; /* forbiden_zero_bit | nal_unit_type */
|
|
ref = c.data[3] & 0x60; /* nal_ref_idc */
|
|
|
|
/* if forbiden bit is different to 0 won't be h264 */
|
|
if (nut > 0x1f)
|
|
break;
|
|
|
|
/* collect statistics about the NAL types */
|
|
if (nut == 1)
|
|
stat_slice++;
|
|
else if (nut == 2)
|
|
stat_dpa++;
|
|
else if (nut == 3)
|
|
stat_dpb++;
|
|
else if (nut == 4)
|
|
stat_dpc++;
|
|
else if ((nut == 5) && (ref != 0))
|
|
stat_idr++;
|
|
else if ((nut == 7) && (ref != 0))
|
|
stat_sps++;
|
|
else if ((nut == 8) && (ref != 0))
|
|
stat_pps++;
|
|
|
|
if ((stat_slice > 4 || (stat_dpa > 4 && stat_dpb > 4 && stat_dpc > 4)) &&
|
|
stat_idr >= 1 && stat_sps >= 1 && stat_pps >= 1) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, H264_VIDEO_CAPS);
|
|
return;
|
|
}
|
|
|
|
data_scan_ctx_advance (tf, &c, 4);
|
|
}
|
|
data_scan_ctx_advance (tf, &c, 1);
|
|
}
|
|
}
|
|
|
|
/*** video/mpeg video stream ***/
|
|
|
|
static GstStaticCaps mpeg_video_caps = GST_STATIC_CAPS ("video/mpeg, "
|
|
"systemstream = (boolean) false");
|
|
#define MPEG_VIDEO_CAPS gst_static_caps_get(&mpeg_video_caps)
|
|
|
|
/*
|
|
* Idea is the same as MPEG system stream typefinding: We check each
|
|
* byte of the stream to see if - from that point on - the stream
|
|
* matches a predefined set of marker bits as defined in the MPEG
|
|
* video specs.
|
|
*
|
|
* I'm sure someone will do a chance calculation here too.
|
|
*/
|
|
|
|
static void
|
|
mpeg_video_stream_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
DataScanCtx c = { 0, NULL, 0 };
|
|
gboolean seen_seq_at_0 = FALSE;
|
|
gboolean seen_seq = FALSE;
|
|
gboolean seen_gop = FALSE;
|
|
guint64 last_pic_offset = 0;
|
|
guint num_pic_headers = 0;
|
|
gint found = 0;
|
|
|
|
while (c.offset < GST_MPEGVID_TYPEFIND_TRY_SYNC) {
|
|
if (found >= GST_MPEGVID_TYPEFIND_TRY_PICTURES)
|
|
break;
|
|
|
|
if (!data_scan_ctx_ensure_data (tf, &c, 5))
|
|
break;
|
|
|
|
if (!IS_MPEG_HEADER (c.data))
|
|
goto next;
|
|
|
|
/* a pack header indicates that this isn't an elementary stream */
|
|
if (c.data[3] == 0xBA && mpeg_sys_is_valid_pack (tf, c.data, c.size, NULL))
|
|
return;
|
|
|
|
/* do we have a sequence header? */
|
|
if (c.data[3] == 0xB3) {
|
|
seen_seq_at_0 = seen_seq_at_0 || (c.offset == 0);
|
|
seen_seq = TRUE;
|
|
data_scan_ctx_advance (tf, &c, 4 + 8);
|
|
continue;
|
|
}
|
|
|
|
/* or a GOP header */
|
|
if (c.data[3] == 0xB8) {
|
|
seen_gop = TRUE;
|
|
data_scan_ctx_advance (tf, &c, 8);
|
|
continue;
|
|
}
|
|
|
|
/* but what we'd really like to see is a picture header */
|
|
if (c.data[3] == 0x00) {
|
|
++num_pic_headers;
|
|
last_pic_offset = c.offset;
|
|
data_scan_ctx_advance (tf, &c, 8);
|
|
continue;
|
|
}
|
|
|
|
/* ... each followed by a slice header with slice_vertical_pos=1 that's
|
|
* not too far away from the previously seen picture header. */
|
|
if (c.data[3] == 0x01 && num_pic_headers > found &&
|
|
(c.offset - last_pic_offset) >= 4 &&
|
|
(c.offset - last_pic_offset) <= 64) {
|
|
data_scan_ctx_advance (tf, &c, 4);
|
|
found += 1;
|
|
continue;
|
|
}
|
|
|
|
next:
|
|
|
|
data_scan_ctx_advance (tf, &c, 1);
|
|
}
|
|
|
|
if (found > 0 || seen_seq) {
|
|
GstTypeFindProbability probability = 0;
|
|
|
|
GST_LOG ("Found %d pictures, seq:%d, gop:%d", found, seen_seq, seen_gop);
|
|
|
|
if (found >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_seq && seen_gop)
|
|
probability = GST_TYPE_FIND_NEARLY_CERTAIN - 1;
|
|
else if (found >= GST_MPEGVID_TYPEFIND_TRY_PICTURES && seen_seq)
|
|
probability = GST_TYPE_FIND_NEARLY_CERTAIN - 9;
|
|
else if (found >= GST_MPEGVID_TYPEFIND_TRY_PICTURES)
|
|
probability = GST_TYPE_FIND_LIKELY;
|
|
else if (seen_seq_at_0 && seen_gop && found > 2)
|
|
probability = GST_TYPE_FIND_LIKELY - 10;
|
|
else if (seen_seq && seen_gop && found > 2)
|
|
probability = GST_TYPE_FIND_LIKELY - 20;
|
|
else if (seen_seq_at_0 && found > 0)
|
|
probability = GST_TYPE_FIND_POSSIBLE;
|
|
else if (seen_seq && found > 0)
|
|
probability = GST_TYPE_FIND_POSSIBLE - 5;
|
|
else if (found > 0)
|
|
probability = GST_TYPE_FIND_POSSIBLE - 10;
|
|
else if (seen_seq)
|
|
probability = GST_TYPE_FIND_POSSIBLE - 20;
|
|
|
|
gst_type_find_suggest_simple (tf, probability, "video/mpeg",
|
|
"systemstream", G_TYPE_BOOLEAN, FALSE,
|
|
"mpegversion", G_TYPE_INT, 1, NULL);
|
|
}
|
|
}
|
|
|
|
/*** audio/x-aiff ***/
|
|
|
|
static GstStaticCaps aiff_caps = GST_STATIC_CAPS ("audio/x-aiff");
|
|
|
|
#define AIFF_CAPS gst_static_caps_get(&aiff_caps)
|
|
static void
|
|
aiff_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
|
|
if (data && memcmp (data, "FORM", 4) == 0) {
|
|
data += 8;
|
|
if (memcmp (data, "AIFF", 4) == 0 || memcmp (data, "AIFC", 4) == 0)
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, AIFF_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** audio/x-svx ***/
|
|
|
|
static GstStaticCaps svx_caps = GST_STATIC_CAPS ("audio/x-svx");
|
|
|
|
#define SVX_CAPS gst_static_caps_get(&svx_caps)
|
|
static void
|
|
svx_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
|
|
if (data && memcmp (data, "FORM", 4) == 0) {
|
|
data += 8;
|
|
if (memcmp (data, "8SVX", 4) == 0 || memcmp (data, "16SV", 4) == 0)
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SVX_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** audio/x-shorten ***/
|
|
|
|
static GstStaticCaps shn_caps = GST_STATIC_CAPS ("audio/x-shorten");
|
|
|
|
#define SHN_CAPS gst_static_caps_get(&shn_caps)
|
|
static void
|
|
shn_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
|
|
if (data && memcmp (data, "ajkg", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SHN_CAPS);
|
|
}
|
|
data = gst_type_find_peek (tf, -8, 8);
|
|
if (data && memcmp (data, "SHNAMPSK", 8) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SHN_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** application/x-ape ***/
|
|
|
|
static GstStaticCaps ape_caps = GST_STATIC_CAPS ("application/x-ape");
|
|
|
|
#define APE_CAPS gst_static_caps_get(&ape_caps)
|
|
static void
|
|
ape_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
|
|
if (data && memcmp (data, "MAC ", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY + 10, APE_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** ISO FORMATS ***/
|
|
|
|
/*** audio/x-m4a ***/
|
|
|
|
static GstStaticCaps m4a_caps = GST_STATIC_CAPS ("audio/x-m4a");
|
|
|
|
#define M4A_CAPS (gst_static_caps_get(&m4a_caps))
|
|
static void
|
|
m4a_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 4, 8);
|
|
|
|
if (data &&
|
|
(memcmp (data, "ftypM4A ", 8) == 0 ||
|
|
memcmp (data, "ftypmp42", 8) == 0)) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, M4A_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** application/x-3gp ***/
|
|
|
|
/* The Q is there because variables can't start with a number. */
|
|
|
|
|
|
static GstStaticCaps q3gp_caps = GST_STATIC_CAPS ("application/x-3gp");
|
|
|
|
#define Q3GP_CAPS (gst_static_caps_get(&q3gp_caps))
|
|
static void
|
|
q3gp_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
|
|
guint32 ftyp_size = 0;
|
|
gint offset = 0;
|
|
guint8 *data = NULL;
|
|
|
|
if ((data = gst_type_find_peek (tf, 0, 12)) == NULL) {
|
|
return;
|
|
}
|
|
|
|
data += 4;
|
|
if (memcmp (data, "ftyp", 4) != 0) {
|
|
return;
|
|
}
|
|
|
|
/* check major brand */
|
|
data += 4;
|
|
if (memcmp (data, "3gp", 3) == 0 ||
|
|
memcmp (data, "3gr", 3) == 0 ||
|
|
memcmp (data, "3gs", 3) == 0 || memcmp (data, "3gg", 3) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, Q3GP_CAPS);
|
|
return;
|
|
}
|
|
|
|
/* check compatible brands */
|
|
if ((data = gst_type_find_peek (tf, 0, 4)) != NULL) {
|
|
ftyp_size = GST_READ_UINT32_BE (data);
|
|
}
|
|
for (offset = 16; offset < ftyp_size; offset += 4) {
|
|
if ((data = gst_type_find_peek (tf, offset, 3)) == NULL) {
|
|
break;
|
|
}
|
|
if (memcmp (data, "3gp", 3) == 0 ||
|
|
memcmp (data, "3gr", 3) == 0 ||
|
|
memcmp (data, "3gs", 3) == 0 || memcmp (data, "3gg", 3) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, Q3GP_CAPS);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
/*** video/mj2 and image/jp2 ***/
|
|
static GstStaticCaps mj2_caps = GST_STATIC_CAPS ("video/mj2");
|
|
|
|
#define MJ2_CAPS gst_static_caps_get(&mj2_caps)
|
|
|
|
static GstStaticCaps jp2_caps = GST_STATIC_CAPS ("image/jp2");
|
|
|
|
#define JP2_CAPS gst_static_caps_get(&jp2_caps)
|
|
|
|
static void
|
|
jp2_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data;
|
|
|
|
data = gst_type_find_peek (tf, 0, 24);
|
|
if (!data)
|
|
return;
|
|
|
|
/* jp2 signature */
|
|
if (memcmp (data, "\000\000\000\014jP \015\012\207\012", 12) != 0)
|
|
return;
|
|
|
|
/* check ftyp box */
|
|
data += 12;
|
|
if (memcmp (data + 4, "ftyp", 4) == 0) {
|
|
if (memcmp (data + 8, "jp2 ", 4) == 0)
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, JP2_CAPS);
|
|
else if (memcmp (data + 8, "mjp2", 4) == 0)
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MJ2_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** video/quicktime ***/
|
|
|
|
static GstStaticCaps qt_caps = GST_STATIC_CAPS ("video/quicktime");
|
|
|
|
#define QT_CAPS gst_static_caps_get(&qt_caps)
|
|
#define STRNCMP(x,y,z) (strncmp ((char*)(x), (char*)(y), z))
|
|
|
|
static void
|
|
qt_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data;
|
|
guint tip = 0;
|
|
guint64 offset = 0;
|
|
guint64 size;
|
|
|
|
while ((data = gst_type_find_peek (tf, offset, 12)) != NULL) {
|
|
guint64 new_offset;
|
|
|
|
if (STRNCMP (&data[4], "ftypqt ", 8) == 0) {
|
|
tip = GST_TYPE_FIND_MAXIMUM;
|
|
break;
|
|
}
|
|
/* box/atom types that are in common with ISO base media file format */
|
|
if (STRNCMP (&data[4], "moov", 4) == 0 ||
|
|
STRNCMP (&data[4], "mdat", 4) == 0 ||
|
|
STRNCMP (&data[4], "ftyp", 4) == 0 ||
|
|
STRNCMP (&data[4], "free", 4) == 0 ||
|
|
STRNCMP (&data[4], "uuid", 4) == 0 ||
|
|
STRNCMP (&data[4], "skip", 4) == 0) {
|
|
if (tip == 0) {
|
|
tip = GST_TYPE_FIND_LIKELY;
|
|
} else {
|
|
tip = GST_TYPE_FIND_NEARLY_CERTAIN;
|
|
}
|
|
}
|
|
/* other box/atom types, apparently quicktime specific */
|
|
else if (STRNCMP (&data[4], "pnot", 4) == 0 ||
|
|
STRNCMP (&data[4], "PICT", 4) == 0 ||
|
|
STRNCMP (&data[4], "wide", 4) == 0 ||
|
|
STRNCMP (&data[4], "prfl", 4) == 0) {
|
|
tip = GST_TYPE_FIND_MAXIMUM;
|
|
break;
|
|
} else {
|
|
tip = 0;
|
|
break;
|
|
}
|
|
size = GST_READ_UINT32_BE (data);
|
|
if (size == 1) {
|
|
guint8 *sizedata;
|
|
|
|
sizedata = gst_type_find_peek (tf, offset + 8, 8);
|
|
if (sizedata == NULL)
|
|
break;
|
|
|
|
size = GST_READ_UINT64_BE (sizedata);
|
|
} else {
|
|
if (size < 8)
|
|
break;
|
|
}
|
|
new_offset = offset + size;
|
|
if (new_offset <= offset)
|
|
break;
|
|
offset = new_offset;
|
|
}
|
|
if (tip > 0) {
|
|
gst_type_find_suggest (tf, tip, QT_CAPS);
|
|
}
|
|
};
|
|
|
|
|
|
/*** image/x-quicktime ***/
|
|
|
|
static GstStaticCaps qtif_caps = GST_STATIC_CAPS ("image/x-quicktime");
|
|
|
|
#define QTIF_CAPS gst_static_caps_get(&qtif_caps)
|
|
|
|
/* how many atoms we check before we give up */
|
|
#define QTIF_MAXROUNDS 25
|
|
|
|
static void
|
|
qtif_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
const guint8 *data;
|
|
gboolean found_idsc = FALSE;
|
|
gboolean found_idat = FALSE;
|
|
guint64 offset = 0;
|
|
guint rounds = 0;
|
|
|
|
while ((data = gst_type_find_peek (tf, offset, 8)) != NULL) {
|
|
guint64 size;
|
|
|
|
size = GST_READ_UINT32_BE (data);
|
|
if (size == 1) {
|
|
const guint8 *sizedata;
|
|
|
|
sizedata = gst_type_find_peek (tf, offset + 8, 8);
|
|
if (sizedata == NULL)
|
|
break;
|
|
|
|
size = GST_READ_UINT64_BE (sizedata);
|
|
}
|
|
if (size < 8)
|
|
break;
|
|
|
|
if (STRNCMP (data + 4, "idsc", 4) == 0)
|
|
found_idsc = TRUE;
|
|
if (STRNCMP (data + 4, "idat", 4) == 0)
|
|
found_idat = TRUE;
|
|
|
|
if (found_idsc && found_idat) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, QTIF_CAPS);
|
|
return;
|
|
}
|
|
|
|
offset += size;
|
|
if (++rounds > QTIF_MAXROUNDS)
|
|
break;
|
|
}
|
|
|
|
if (found_idsc || found_idat) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, QTIF_CAPS);
|
|
return;
|
|
}
|
|
};
|
|
|
|
/*** audio/x-mod ***/
|
|
|
|
static GstStaticCaps mod_caps = GST_STATIC_CAPS ("audio/x-mod");
|
|
|
|
#define MOD_CAPS gst_static_caps_get(&mod_caps)
|
|
/* FIXME: M15 CheckType to do */
|
|
static void
|
|
mod_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data;
|
|
|
|
/* MOD */
|
|
if ((data = gst_type_find_peek (tf, 1080, 4)) != NULL) {
|
|
/* Protracker and variants */
|
|
if ((memcmp (data, "M.K.", 4) == 0) || (memcmp (data, "M!K!", 4) == 0) ||
|
|
/* Star Tracker */
|
|
(memcmp (data, "FLT", 3) == 0 && isdigit (data[3])) ||
|
|
(memcmp (data, "EXO", 3) == 0 && isdigit (data[3])) ||
|
|
/* Oktalyzer (Amiga) */
|
|
(memcmp (data, "OKTA", 4) == 0) ||
|
|
/* Oktalyser (Atari) */
|
|
(memcmp (data, "CD81", 4) == 0) ||
|
|
/* Fasttracker */
|
|
(memcmp (data + 1, "CHN", 3) == 0 && isdigit (data[0])) ||
|
|
/* Fasttracker or Taketracker */
|
|
(memcmp (data + 2, "CH", 2) == 0 && isdigit (data[0])
|
|
&& isdigit (data[1])) || (memcmp (data + 2, "CN", 2) == 0
|
|
&& isdigit (data[0]) && isdigit (data[1]))) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
/* XM */
|
|
if ((data = gst_type_find_peek (tf, 0, 38)) != NULL) {
|
|
if (memcmp (data, "Extended Module: ", 17) == 0 && data[37] == 0x1A) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
/* OKT */
|
|
if (data || (data = gst_type_find_peek (tf, 0, 8)) != NULL) {
|
|
if (memcmp (data, "OKTASONG", 8) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
if (data || (data = gst_type_find_peek (tf, 0, 4)) != NULL) {
|
|
/* 669 */
|
|
if ((memcmp (data, "if", 2) == 0) || (memcmp (data, "JN", 2) == 0)) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MOD_CAPS);
|
|
return;
|
|
}
|
|
/* AMF */
|
|
if ((memcmp (data, "AMF", 3) == 0 && data[3] > 10 && data[3] < 14) ||
|
|
/* IT */
|
|
(memcmp (data, "IMPM", 4) == 0) ||
|
|
/* MED */
|
|
(memcmp (data, "MMD0", 4) == 0) || (memcmp (data, "MMD1", 4) == 0) ||
|
|
/* MTM */
|
|
(memcmp (data, "MTM", 3) == 0)) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
|
|
return;
|
|
}
|
|
/* DSM */
|
|
if (memcmp (data, "RIFF", 4) == 0) {
|
|
guint8 *data2 = gst_type_find_peek (tf, 8, 4);
|
|
|
|
if (data2) {
|
|
if (memcmp (data2, "DSMF", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
/* FAM */
|
|
if (memcmp (data, "FAM\xFE", 4) == 0) {
|
|
guint8 *data2 = gst_type_find_peek (tf, 44, 3);
|
|
|
|
if (data2) {
|
|
if (memcmp (data2, "compare", 3) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
|
|
return;
|
|
}
|
|
} else {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MOD_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
/* GDM */
|
|
if (memcmp (data, "GDM\xFE", 4) == 0) {
|
|
guint8 *data2 = gst_type_find_peek (tf, 71, 4);
|
|
|
|
if (data2) {
|
|
if (memcmp (data2, "GMFS", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
|
|
return;
|
|
}
|
|
} else {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MOD_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
/* IMF */
|
|
if ((data = gst_type_find_peek (tf, 60, 4)) != NULL) {
|
|
if (memcmp (data, "IM10", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
/* S3M */
|
|
if ((data = gst_type_find_peek (tf, 44, 4)) != NULL) {
|
|
if (memcmp (data, "SCRM", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MOD_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** application/x-shockwave-flash ***/
|
|
|
|
static GstStaticCaps swf_caps =
|
|
GST_STATIC_CAPS ("application/x-shockwave-flash");
|
|
#define SWF_CAPS (gst_static_caps_get(&swf_caps))
|
|
static void
|
|
swf_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
|
|
if (data && (data[0] == 'F' || data[0] == 'C') &&
|
|
data[1] == 'W' && data[2] == 'S') {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SWF_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** image/jpeg ***/
|
|
|
|
static GstStaticCaps jpeg_caps = GST_STATIC_CAPS ("image/jpeg");
|
|
|
|
#define JPEG_CAPS (gst_static_caps_get(&jpeg_caps))
|
|
static void
|
|
jpeg_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 10);
|
|
guint8 header[2] = { 0xFF, 0xD8 };
|
|
|
|
if (data && memcmp (data, header, 2) == 0) {
|
|
if (memcmp (data + 6, "JFIF", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, JPEG_CAPS);
|
|
} else if (memcmp (data + 6, "Exif", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, JPEG_CAPS);
|
|
} else {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, JPEG_CAPS);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** image/bmp ***/
|
|
|
|
static GstStaticCaps bmp_caps = GST_STATIC_CAPS ("image/bmp");
|
|
|
|
#define BMP_CAPS (gst_static_caps_get(&bmp_caps))
|
|
static void
|
|
bmp_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
DataScanCtx c = { 0, NULL, 0 };
|
|
guint32 struct_size, w, h, planes, bpp;
|
|
|
|
if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 54)))
|
|
return;
|
|
|
|
if (c.data[0] != 'B' || c.data[1] != 'M')
|
|
return;
|
|
|
|
/* skip marker + size */
|
|
data_scan_ctx_advance (tf, &c, 2 + 4);
|
|
|
|
/* reserved, must be 0 */
|
|
if (c.data[0] != 0 || c.data[1] != 0 || c.data[2] != 0 || c.data[3] != 0)
|
|
return;
|
|
|
|
data_scan_ctx_advance (tf, &c, 2 + 2);
|
|
|
|
/* offset to start of image data in bytes (check for sanity) */
|
|
GST_LOG ("offset=%u", GST_READ_UINT32_LE (c.data));
|
|
if (GST_READ_UINT32_LE (c.data) > (10 * 1024 * 1024))
|
|
return;
|
|
|
|
struct_size = GST_READ_UINT32_LE (c.data + 4);
|
|
GST_LOG ("struct_size=%u", struct_size);
|
|
|
|
data_scan_ctx_advance (tf, &c, 4 + 4);
|
|
|
|
if (struct_size == 0x0C) {
|
|
w = GST_READ_UINT16_LE (c.data);
|
|
h = GST_READ_UINT16_LE (c.data + 2);
|
|
planes = GST_READ_UINT16_LE (c.data + 2 + 2);
|
|
bpp = GST_READ_UINT16_LE (c.data + 2 + 2 + 2);
|
|
} else if (struct_size == 40 || struct_size == 64 || struct_size == 108
|
|
|| struct_size == 124 || struct_size == 0xF0) {
|
|
w = GST_READ_UINT32_LE (c.data);
|
|
h = GST_READ_UINT32_LE (c.data + 4);
|
|
planes = GST_READ_UINT16_LE (c.data + 4 + 4);
|
|
bpp = GST_READ_UINT16_LE (c.data + 4 + 4 + 2);
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
/* image sizes sanity check */
|
|
GST_LOG ("w=%u, h=%u, planes=%u, bpp=%u", w, h, planes, bpp);
|
|
if (w == 0 || w > 0xfffff || h == 0 || h > 0xfffff || planes != 1 ||
|
|
(bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32))
|
|
return;
|
|
|
|
gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM, "image/bmp",
|
|
"width", G_TYPE_INT, w, "height", G_TYPE_INT, h, "bpp", G_TYPE_INT, bpp,
|
|
NULL);
|
|
}
|
|
|
|
/*** image/tiff ***/
|
|
static GstStaticCaps tiff_caps = GST_STATIC_CAPS ("image/tiff, "
|
|
"endianness = (int) { BIG_ENDIAN, LITTLE_ENDIAN }");
|
|
#define TIFF_CAPS (gst_static_caps_get(&tiff_caps))
|
|
static GstStaticCaps tiff_be_caps = GST_STATIC_CAPS ("image/tiff, "
|
|
"endianness = (int) BIG_ENDIAN");
|
|
#define TIFF_BE_CAPS (gst_static_caps_get(&tiff_be_caps))
|
|
static GstStaticCaps tiff_le_caps = GST_STATIC_CAPS ("image/tiff, "
|
|
"endianness = (int) LITTLE_ENDIAN");
|
|
#define TIFF_LE_CAPS (gst_static_caps_get(&tiff_le_caps))
|
|
static void
|
|
tiff_type_find (GstTypeFind * tf, gpointer ununsed)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 8);
|
|
guint8 le_header[4] = { 0x49, 0x49, 0x2A, 0x00 };
|
|
guint8 be_header[4] = { 0x4D, 0x4D, 0x00, 0x2A };
|
|
|
|
if (data) {
|
|
if (memcmp (data, le_header, 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, TIFF_LE_CAPS);
|
|
} else if (memcmp (data, be_header, 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, TIFF_BE_CAPS);
|
|
}
|
|
}
|
|
}
|
|
|
|
static GstStaticCaps sds_caps = GST_STATIC_CAPS ("audio/x-sds");
|
|
|
|
#define SDS_CAPS (gst_static_caps_get(&sds_caps))
|
|
static void
|
|
sds_type_find (GstTypeFind * tf, gpointer ununsed)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
guint8 mask[4] = { 0xFF, 0xFF, 0x80, 0xFF };
|
|
guint8 match[4] = { 0xF0, 0x7E, 0, 0x01 };
|
|
gint x;
|
|
|
|
if (data) {
|
|
for (x = 0; x < 4; x++) {
|
|
if ((data[x] & mask[x]) != match[x]) {
|
|
return;
|
|
}
|
|
}
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SDS_CAPS);
|
|
}
|
|
}
|
|
|
|
static GstStaticCaps ircam_caps = GST_STATIC_CAPS ("audio/x-ircam");
|
|
|
|
#define IRCAM_CAPS (gst_static_caps_get(&ircam_caps))
|
|
static void
|
|
ircam_type_find (GstTypeFind * tf, gpointer ununsed)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
guint8 mask[4] = { 0xFF, 0xFF, 0xF8, 0xFF };
|
|
guint8 match[4] = { 0x64, 0xA3, 0x00, 0x00 };
|
|
gint x;
|
|
gboolean matched = TRUE;
|
|
|
|
if (!data) {
|
|
return;
|
|
}
|
|
for (x = 0; x < 4; x++) {
|
|
if ((data[x] & mask[x]) != match[x]) {
|
|
matched = FALSE;
|
|
}
|
|
}
|
|
if (matched) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, IRCAM_CAPS);
|
|
return;
|
|
}
|
|
/* now try the reverse version */
|
|
matched = TRUE;
|
|
for (x = 0; x < 4; x++) {
|
|
if ((data[x] & mask[3 - x]) != match[3 - x]) {
|
|
matched = FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*** video/x-matroska ***/
|
|
static GstStaticCaps matroska_caps = GST_STATIC_CAPS ("video/x-matroska");
|
|
|
|
#define MATROSKA_CAPS (gst_static_caps_get(&matroska_caps))
|
|
static void
|
|
matroska_type_find (GstTypeFind * tf, gpointer ununsed)
|
|
{
|
|
/* 4 bytes for EBML ID, 1 byte for header length identifier */
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4 + 1);
|
|
gint len_mask = 0x80, size = 1, n = 1, total;
|
|
guint8 probe_data[] = { 'm', 'a', 't', 'r', 'o', 's', 'k', 'a' };
|
|
|
|
if (!data)
|
|
return;
|
|
|
|
/* ebml header? */
|
|
if (data[0] != 0x1A || data[1] != 0x45 || data[2] != 0xDF || data[3] != 0xA3)
|
|
return;
|
|
|
|
/* length of header */
|
|
total = data[4];
|
|
while (size <= 8 && !(total & len_mask)) {
|
|
size++;
|
|
len_mask >>= 1;
|
|
}
|
|
if (size > 8)
|
|
return;
|
|
total &= (len_mask - 1);
|
|
while (n < size)
|
|
total = (total << 8) | data[4 + n++];
|
|
|
|
/* get new data for full header, 4 bytes for EBML ID,
|
|
* EBML length tag and the actual header */
|
|
data = gst_type_find_peek (tf, 0, 4 + size + total);
|
|
if (!data)
|
|
return;
|
|
|
|
/* the header must contain the document type 'matroska'. For now,
|
|
* we don't parse the whole header but simply check for the
|
|
* availability of that array of characters inside the header.
|
|
* Not fully fool-proof, but good enough. */
|
|
for (n = 4 + size; n <= 4 + size + total - sizeof (probe_data); n++)
|
|
if (!memcmp (&data[n], probe_data, sizeof (probe_data))) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MATROSKA_CAPS);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*** application/mxf ***/
|
|
static GstStaticCaps mxf_caps = GST_STATIC_CAPS ("application/mxf");
|
|
|
|
#define MXF_MAX_PROBE_LENGTH (1024 * 64)
|
|
#define MXF_CAPS (gst_static_caps_get(&mxf_caps))
|
|
|
|
/*
|
|
* MXF files start with a header partition pack key of 16 bytes which is defined
|
|
* at SMPTE-377M 6.1. Before this there can be up to 64K of run-in which _must_
|
|
* not contain the partition pack key.
|
|
*/
|
|
static void
|
|
mxf_type_find (GstTypeFind * tf, gpointer ununsed)
|
|
{
|
|
static const guint8 partition_pack_key[] =
|
|
{ 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x05, 0x01, 0x01, 0x0d, 0x01, 0x02, 0x01,
|
|
0x01
|
|
};
|
|
DataScanCtx c = { 0, NULL, 0 };
|
|
|
|
while (c.offset <= MXF_MAX_PROBE_LENGTH) {
|
|
guint i;
|
|
if (G_UNLIKELY (!data_scan_ctx_ensure_data (tf, &c, 1024)))
|
|
break;
|
|
|
|
/* look over in chunks of 1kbytes to avoid too much overhead */
|
|
|
|
for (i = 0; i < 1024 - 16; i++) {
|
|
/* Check first byte before calling more expensive memcmp function */
|
|
if (G_UNLIKELY (c.data[i] == 0x06
|
|
&& memcmp (c.data + i, partition_pack_key, 13) == 0)) {
|
|
/* Header partition pack? */
|
|
if (c.data[i + 13] != 0x02)
|
|
goto advance;
|
|
|
|
/* Partition status */
|
|
if (c.data[i + 14] >= 0x05)
|
|
goto advance;
|
|
|
|
/* Reserved, must be 0x00 */
|
|
if (c.data[i + 15] != 0x00)
|
|
goto advance;
|
|
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, MXF_CAPS);
|
|
return;
|
|
}
|
|
}
|
|
|
|
advance:
|
|
data_scan_ctx_advance (tf, &c, 1024 - 16);
|
|
}
|
|
}
|
|
|
|
/*** video/x-dv ***/
|
|
|
|
static GstStaticCaps dv_caps = GST_STATIC_CAPS ("video/x-dv, "
|
|
"systemstream = (boolean) true");
|
|
#define DV_CAPS (gst_static_caps_get(&dv_caps))
|
|
static void
|
|
dv_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data;
|
|
|
|
data = gst_type_find_peek (tf, 0, 5);
|
|
|
|
/* check for DIF and DV flag */
|
|
if (data && (data[0] == 0x1f) && (data[1] == 0x07) && (data[2] == 0x00)) {
|
|
const gchar *format;
|
|
|
|
if (data[3] & 0x80) {
|
|
format = "PAL";
|
|
} else {
|
|
format = "NTSC";
|
|
}
|
|
|
|
gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM, "video/x-dv",
|
|
"systemstream", G_TYPE_BOOLEAN, TRUE,
|
|
"format", G_TYPE_STRING, format, NULL);
|
|
}
|
|
}
|
|
|
|
|
|
/*** application/ogg and application/x-annodex ***/
|
|
static GstStaticCaps ogg_caps = GST_STATIC_CAPS ("application/ogg");
|
|
static GstStaticCaps annodex_caps = GST_STATIC_CAPS ("application/x-annodex");
|
|
static GstStaticCaps ogg_annodex_caps =
|
|
GST_STATIC_CAPS ("application/ogg;application/x-annodex");
|
|
|
|
#define OGGANX_CAPS (gst_static_caps_get(&ogg_annodex_caps))
|
|
|
|
static void
|
|
ogganx_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
|
|
if ((data != NULL) && (memcmp (data, "OggS", 4) == 0)) {
|
|
|
|
/* Check for an annodex fishbone header */
|
|
data = gst_type_find_peek (tf, 28, 8);
|
|
if (data && memcmp (data, "fishead\0", 8) == 0)
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,
|
|
gst_static_caps_get (&annodex_caps));
|
|
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,
|
|
gst_static_caps_get (&ogg_caps));
|
|
}
|
|
}
|
|
|
|
/*** audio/x-vorbis ***/
|
|
static GstStaticCaps vorbis_caps = GST_STATIC_CAPS ("audio/x-vorbis");
|
|
|
|
#define VORBIS_CAPS (gst_static_caps_get(&vorbis_caps))
|
|
static void
|
|
vorbis_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 30);
|
|
|
|
if (data) {
|
|
guint blocksize_0;
|
|
guint blocksize_1;
|
|
|
|
/* 1 byte packet type (identification=0x01)
|
|
6 byte string "vorbis"
|
|
4 byte vorbis version */
|
|
if (memcmp (data, "\001vorbis\000\000\000\000", 11) != 0)
|
|
return;
|
|
data += 11;
|
|
/* 1 byte channels must be != 0 */
|
|
if (data[0] == 0)
|
|
return;
|
|
data++;
|
|
/* 4 byte samplerate must be != 0 */
|
|
if (GST_READ_UINT32_LE (data) == 0)
|
|
return;
|
|
data += 16;
|
|
/* blocksize checks */
|
|
blocksize_0 = data[0] & 0x0F;
|
|
blocksize_1 = (data[0] & 0xF0) >> 4;
|
|
if (blocksize_0 > blocksize_1)
|
|
return;
|
|
if (blocksize_0 < 6 || blocksize_0 > 13)
|
|
return;
|
|
if (blocksize_1 < 6 || blocksize_1 > 13)
|
|
return;
|
|
data++;
|
|
/* framing bit */
|
|
if ((data[0] & 0x01) != 1)
|
|
return;
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, VORBIS_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** video/x-theora ***/
|
|
|
|
static GstStaticCaps theora_caps = GST_STATIC_CAPS ("video/x-theora");
|
|
|
|
#define THEORA_CAPS (gst_static_caps_get(&theora_caps))
|
|
static void
|
|
theora_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 7); //42);
|
|
|
|
if (data) {
|
|
if (data[0] != 0x80)
|
|
return;
|
|
if (memcmp (&data[1], "theora", 6) != 0)
|
|
return;
|
|
/* FIXME: make this more reliable when specs are out */
|
|
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, THEORA_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** kate ***/
|
|
static void
|
|
kate_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 64);
|
|
gchar category[16] = { 0, };
|
|
|
|
if (G_UNLIKELY (data == NULL))
|
|
return;
|
|
|
|
/* see: http://wiki.xiph.org/index.php/OggKate#Format_specification */
|
|
if (G_LIKELY (memcmp (data, "\200kate\0\0\0", 8) != 0))
|
|
return;
|
|
|
|
/* make sure we always have a NUL-terminated string */
|
|
memcpy (category, data + 48, 15);
|
|
GST_LOG ("kate category: %s", category);
|
|
/* canonical categories for subtitles: subtitles, spu-subtitles, SUB, K-SPU */
|
|
if (strcmp (category, "subtitles") == 0 || strcmp (category, "SUB") == 0 ||
|
|
strcmp (category, "spu-subtitles") == 0 ||
|
|
strcmp (category, "K-SPU") == 0) {
|
|
gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM,
|
|
"subtitle/x-kate", NULL);
|
|
} else {
|
|
gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM,
|
|
"application/x-kate", NULL);
|
|
}
|
|
}
|
|
|
|
/*** application/x-ogm-video or audio***/
|
|
|
|
static GstStaticCaps ogmvideo_caps =
|
|
GST_STATIC_CAPS ("application/x-ogm-video");
|
|
#define OGMVIDEO_CAPS (gst_static_caps_get(&ogmvideo_caps))
|
|
static void
|
|
ogmvideo_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 9);
|
|
|
|
if (data) {
|
|
if (memcmp (data, "\001video\000\000\000", 9) != 0)
|
|
return;
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGMVIDEO_CAPS);
|
|
}
|
|
}
|
|
|
|
static GstStaticCaps ogmaudio_caps =
|
|
GST_STATIC_CAPS ("application/x-ogm-audio");
|
|
#define OGMAUDIO_CAPS (gst_static_caps_get(&ogmaudio_caps))
|
|
static void
|
|
ogmaudio_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 9);
|
|
|
|
if (data) {
|
|
if (memcmp (data, "\001audio\000\000\000", 9) != 0)
|
|
return;
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGMAUDIO_CAPS);
|
|
}
|
|
}
|
|
|
|
static GstStaticCaps ogmtext_caps = GST_STATIC_CAPS ("application/x-ogm-text");
|
|
|
|
#define OGMTEXT_CAPS (gst_static_caps_get(&ogmtext_caps))
|
|
static void
|
|
ogmtext_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 9);
|
|
|
|
if (data) {
|
|
if (memcmp (data, "\001text\000\000\000\000", 9) != 0)
|
|
return;
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGMTEXT_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** audio/x-speex ***/
|
|
|
|
static GstStaticCaps speex_caps = GST_STATIC_CAPS ("audio/x-speex");
|
|
|
|
#define SPEEX_CAPS (gst_static_caps_get(&speex_caps))
|
|
static void
|
|
speex_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 80);
|
|
|
|
if (data) {
|
|
/* 8 byte string "Speex "
|
|
24 byte speex version string + int */
|
|
if (memcmp (data, "Speex ", 8) != 0)
|
|
return;
|
|
data += 32;
|
|
|
|
/* 4 byte header size >= 80 */
|
|
if (GST_READ_UINT32_LE (data) < 80)
|
|
return;
|
|
data += 4;
|
|
|
|
/* 4 byte sample rate <= 48000 */
|
|
if (GST_READ_UINT32_LE (data) > 48000)
|
|
return;
|
|
data += 4;
|
|
|
|
/* currently there are only 3 speex modes. */
|
|
if (GST_READ_UINT32_LE (data) > 3)
|
|
return;
|
|
data += 12;
|
|
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, SPEEX_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** audio/x-celt ***/
|
|
|
|
static GstStaticCaps celt_caps = GST_STATIC_CAPS ("audio/x-celt");
|
|
|
|
#define CELT_CAPS (gst_static_caps_get(&celt_caps))
|
|
static void
|
|
celt_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 8);
|
|
|
|
if (data) {
|
|
/* 8 byte string "CELT " */
|
|
if (memcmp (data, "CELT ", 8) != 0)
|
|
return;
|
|
|
|
/* TODO: Check other values of the CELT header */
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, CELT_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** application/x-ogg-skeleton ***/
|
|
static GstStaticCaps ogg_skeleton_caps =
|
|
GST_STATIC_CAPS ("application/x-ogg-skeleton, parsed=(boolean)FALSE");
|
|
#define OGG_SKELETON_CAPS (gst_static_caps_get(&ogg_skeleton_caps))
|
|
static void
|
|
oggskel_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 12);
|
|
|
|
if (data) {
|
|
/* 8 byte string "fishead\0" for the ogg skeleton stream */
|
|
if (memcmp (data, "fishead\0", 8) != 0)
|
|
return;
|
|
data += 8;
|
|
|
|
/* Require that the header contains version 3.0 */
|
|
if (GST_READ_UINT16_LE (data) != 3)
|
|
return;
|
|
data += 2;
|
|
if (GST_READ_UINT16_LE (data) != 0)
|
|
return;
|
|
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGG_SKELETON_CAPS);
|
|
}
|
|
}
|
|
|
|
static GstStaticCaps cmml_caps = GST_STATIC_CAPS ("text/x-cmml");
|
|
|
|
#define CMML_CAPS (gst_static_caps_get(&cmml_caps))
|
|
static void
|
|
cmml_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
/* Header is 12 bytes minimum (though we don't check the minor version */
|
|
guint8 *data = gst_type_find_peek (tf, 0, 12);
|
|
|
|
if (data) {
|
|
|
|
/* 8 byte string "CMML\0\0\0\0" for the magic number */
|
|
if (memcmp (data, "CMML\0\0\0\0", 8) != 0)
|
|
return;
|
|
data += 8;
|
|
|
|
/* Require that the header contains at least version 2.0 */
|
|
if (GST_READ_UINT16_LE (data) < 2)
|
|
return;
|
|
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, CMML_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** application/x-tar ***/
|
|
|
|
static GstStaticCaps tar_caps = GST_STATIC_CAPS ("application/x-tar");
|
|
|
|
#define TAR_CAPS (gst_static_caps_get(&tar_caps))
|
|
#define OLDGNU_MAGIC "ustar " /* 7 chars and a NUL */
|
|
#define NEWGNU_MAGIC "ustar" /* 5 chars and a NUL */
|
|
static void
|
|
tar_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 257, 8);
|
|
|
|
/* of course we are not certain, but we don't want other typefind funcs
|
|
* to detect formats of files within the tar archive, e.g. mp3s */
|
|
if (data) {
|
|
if (memcmp (data, OLDGNU_MAGIC, 8) == 0) { /* sic */
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, TAR_CAPS);
|
|
} else if (memcmp (data, NEWGNU_MAGIC, 6) == 0 && /* sic */
|
|
g_ascii_isdigit (data[6]) && g_ascii_isdigit (data[7])) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, TAR_CAPS);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** application/x-ar ***/
|
|
|
|
static GstStaticCaps ar_caps = GST_STATIC_CAPS ("application/x-ar");
|
|
|
|
#define AR_CAPS (gst_static_caps_get(&ar_caps))
|
|
static void
|
|
ar_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 24);
|
|
|
|
if (data && memcmp (data, "!<arch>", 7) == 0) {
|
|
gint i;
|
|
|
|
for (i = 7; i < 24; ++i) {
|
|
if (!g_ascii_isprint (data[i]) && data[i] != '\n') {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_POSSIBLE, AR_CAPS);
|
|
}
|
|
}
|
|
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, AR_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** audio/x-au ***/
|
|
|
|
/* NOTE: we cannot replace this function with TYPE_FIND_REGISTER_START_WITH,
|
|
* as it is only possible to register one typefind factory per 'name'
|
|
* (which is in this case the caps), and the first one would be replaced by
|
|
* the second one. */
|
|
static GstStaticCaps au_caps = GST_STATIC_CAPS ("audio/x-au");
|
|
|
|
#define AU_CAPS (gst_static_caps_get(&au_caps))
|
|
static void
|
|
au_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
|
|
if (data) {
|
|
if (memcmp (data, ".snd", 4) == 0 || memcmp (data, "dns.", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, AU_CAPS);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*** video/x-nuv ***/
|
|
|
|
/* NOTE: we cannot replace this function with TYPE_FIND_REGISTER_START_WITH,
|
|
* as it is only possible to register one typefind factory per 'name'
|
|
* (which is in this case the caps), and the first one would be replaced by
|
|
* the second one. */
|
|
static GstStaticCaps nuv_caps = GST_STATIC_CAPS ("video/x-nuv");
|
|
|
|
#define NUV_CAPS (gst_static_caps_get(&nuv_caps))
|
|
static void
|
|
nuv_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 11);
|
|
|
|
if (data) {
|
|
if (memcmp (data, "MythTVVideo", 11) == 0
|
|
|| memcmp (data, "NuppelVideo", 11) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, NUV_CAPS);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** audio/x-paris ***/
|
|
/* NOTE: do not replace this function with two TYPE_FIND_REGISTER_START_WITH */
|
|
static GstStaticCaps paris_caps = GST_STATIC_CAPS ("audio/x-paris");
|
|
|
|
#define PARIS_CAPS (gst_static_caps_get(&paris_caps))
|
|
static void
|
|
paris_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
|
|
|
if (data) {
|
|
if (memcmp (data, " paf", 4) == 0 || memcmp (data, "fap ", 4) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, PARIS_CAPS);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** audio/iLBC-sh ***/
|
|
/* NOTE: do not replace this function with two TYPE_FIND_REGISTER_START_WITH */
|
|
static GstStaticCaps ilbc_caps = GST_STATIC_CAPS ("audio/iLBC-sh");
|
|
|
|
#define ILBC_CAPS (gst_static_caps_get(&ilbc_caps))
|
|
static void
|
|
ilbc_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 8);
|
|
|
|
if (data) {
|
|
if (memcmp (data, "#!iLBC30", 8) == 0 || memcmp (data, "#!iLBC20", 8) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, ILBC_CAPS);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** application/x-ms-dos-executable ***/
|
|
|
|
static GstStaticCaps msdos_caps =
|
|
GST_STATIC_CAPS ("application/x-ms-dos-executable");
|
|
#define MSDOS_CAPS (gst_static_caps_get(&msdos_caps))
|
|
/* see http://www.madchat.org/vxdevl/papers/winsys/pefile/pefile.htm */
|
|
static void
|
|
msdos_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 64);
|
|
|
|
if (data && data[0] == 'M' && data[1] == 'Z' &&
|
|
GST_READ_UINT16_LE (data + 8) == 4) {
|
|
guint32 pe_offset = GST_READ_UINT32_LE (data + 60);
|
|
|
|
data = gst_type_find_peek (tf, pe_offset, 2);
|
|
if (data && data[0] == 'P' && data[1] == 'E') {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, MSDOS_CAPS);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** application/x-mmsh ***/
|
|
|
|
static GstStaticCaps mmsh_caps = GST_STATIC_CAPS ("application/x-mmsh");
|
|
|
|
#define MMSH_CAPS gst_static_caps_get(&mmsh_caps)
|
|
|
|
/* This is to recognise mssh-over-http */
|
|
static void
|
|
mmsh_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
static const guint8 asf_marker[16] = { 0x30, 0x26, 0xb2, 0x75, 0x8e, 0x66,
|
|
0xcf, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c
|
|
};
|
|
|
|
guint8 *data;
|
|
|
|
data = gst_type_find_peek (tf, 0, 2 + 2 + 4 + 2 + 2 + 16);
|
|
if (data && data[0] == 0x24 && data[1] == 0x48 &&
|
|
GST_READ_UINT16_LE (data + 2) > 2 + 2 + 4 + 2 + 2 + 16 &&
|
|
memcmp (data + 2 + 2 + 4 + 2 + 2, asf_marker, 16) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, MMSH_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** video/x-dirac ***/
|
|
|
|
/* NOTE: we cannot replace this function with TYPE_FIND_REGISTER_START_WITH,
|
|
* as it is only possible to register one typefind factory per 'name'
|
|
* (which is in this case the caps), and the first one would be replaced by
|
|
* the second one. */
|
|
static GstStaticCaps dirac_caps = GST_STATIC_CAPS ("video/x-dirac");
|
|
|
|
#define DIRAC_CAPS (gst_static_caps_get(&dirac_caps))
|
|
static void
|
|
dirac_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
guint8 *data = gst_type_find_peek (tf, 0, 8);
|
|
|
|
if (data) {
|
|
if (memcmp (data, "BBCD", 4) == 0 || memcmp (data, "KW-DIRAC", 8) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, DIRAC_CAPS);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*** video/vivo ***/
|
|
|
|
static GstStaticCaps vivo_caps = GST_STATIC_CAPS ("video/vivo");
|
|
|
|
#define VIVO_CAPS gst_static_caps_get(&vivo_caps)
|
|
|
|
static void
|
|
vivo_type_find (GstTypeFind * tf, gpointer unused)
|
|
{
|
|
static const guint8 vivo_marker[] = { 'V', 'e', 'r', 's', 'i', 'o', 'n',
|
|
':', 'V', 'i', 'v', 'o', '/'
|
|
};
|
|
guint8 *data;
|
|
guint hdr_len, pos;
|
|
|
|
data = gst_type_find_peek (tf, 0, 1024);
|
|
if (data == NULL || data[0] != 0x00)
|
|
return;
|
|
|
|
if ((data[1] & 0x80)) {
|
|
if ((data[2] & 0x80))
|
|
return;
|
|
hdr_len = ((guint) (data[1] & 0x7f)) << 7;
|
|
hdr_len += data[2];
|
|
if (hdr_len > 2048)
|
|
return;
|
|
pos = 3;
|
|
} else {
|
|
hdr_len = data[1];
|
|
pos = 2;
|
|
}
|
|
|
|
/* 1008 = 1022 - strlen ("Version:Vivo/") - 1 */
|
|
while (pos < 1008 && data[pos] == '\r' && data[pos + 1] == '\n')
|
|
pos += 2;
|
|
|
|
if (memcmp (data + pos, vivo_marker, sizeof (vivo_marker)) == 0) {
|
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, VIVO_CAPS);
|
|
}
|
|
}
|
|
|
|
/*** XDG MIME typefinder (to avoid false positives mostly) ***/
|
|
|
|
#ifdef USE_GIO
|
|
static void
|
|
xdgmime_typefind (GstTypeFind * find, gpointer user_data)
|
|
{
|
|
gchar *mimetype;
|
|
gsize length = 16384;
|
|
guint64 tf_length;
|
|
guint8 *data;
|
|
gchar *tmp;
|
|
|
|
if ((tf_length = gst_type_find_get_length (find)) > 0)
|
|
length = MIN (length, tf_length);
|
|
|
|
if ((data = gst_type_find_peek (find, 0, length)) == NULL)
|
|
return;
|
|
|
|
tmp = g_content_type_guess (NULL, data, length, NULL);
|
|
if (tmp == NULL || g_content_type_is_unknown (tmp)) {
|
|
g_free (tmp);
|
|
return;
|
|
}
|
|
|
|
mimetype = g_content_type_get_mime_type (tmp);
|
|
g_free (tmp);
|
|
|
|
if (mimetype == NULL)
|
|
return;
|
|
|
|
GST_DEBUG ("Got mimetype '%s'", mimetype);
|
|
|
|
/* Ignore audio/video types:
|
|
* - our own typefinders in -base are likely to be better at this
|
|
* (and if they're not, we really want to fix them, that's why we don't
|
|
* report xdg-detected audio/video types at all, not even with a low
|
|
* probability)
|
|
* - we want to detect GStreamer media types and not MIME types
|
|
* - the purpose of this xdg mime finder is mainly to prevent false
|
|
* positives of non-media formats, not to typefind audio/video formats */
|
|
if (g_str_has_prefix (mimetype, "audio/") ||
|
|
g_str_has_prefix (mimetype, "video/")) {
|
|
GST_LOG ("Ignoring audio/video mime type");
|
|
g_free (mimetype);
|
|
return;
|
|
}
|
|
|
|
/* Again, we mainly want the xdg typefinding to prevent false-positives on
|
|
* non-media formats, so suggest the type with a probability that trumps
|
|
* uncertain results of our typefinders, but not more than that. */
|
|
GST_LOG ("Suggesting '%s' with probability POSSIBLE", mimetype);
|
|
gst_type_find_suggest_simple (find, GST_TYPE_FIND_POSSIBLE, mimetype, NULL);
|
|
g_free (mimetype);
|
|
}
|
|
#endif /* USE_GIO */
|
|
|
|
/*** generic typefind for streams that have some data at a specific position***/
|
|
typedef struct
|
|
{
|
|
const guint8 *data;
|
|
guint size;
|
|
guint probability;
|
|
GstCaps *caps;
|
|
}
|
|
GstTypeFindData;
|
|
|
|
static void
|
|
start_with_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
GstTypeFindData *start_with = (GstTypeFindData *) private;
|
|
guint8 *data;
|
|
|
|
GST_LOG ("trying to find mime type %s with the first %u bytes of data",
|
|
gst_structure_get_name (gst_caps_get_structure (start_with->caps, 0)),
|
|
start_with->size);
|
|
data = gst_type_find_peek (tf, 0, start_with->size);
|
|
if (data && memcmp (data, start_with->data, start_with->size) == 0) {
|
|
gst_type_find_suggest (tf, start_with->probability, start_with->caps);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sw_data_destroy (GstTypeFindData * sw_data)
|
|
{
|
|
if (G_LIKELY (sw_data->caps != NULL))
|
|
gst_caps_unref (sw_data->caps);
|
|
g_free (sw_data);
|
|
}
|
|
|
|
#define TYPE_FIND_REGISTER_START_WITH(plugin,name,rank,ext,_data,_size,_probability)\
|
|
G_BEGIN_DECLS{ \
|
|
GstTypeFindData *sw_data = g_new (GstTypeFindData, 1); \
|
|
sw_data->data = (const guint8 *)_data; \
|
|
sw_data->size = _size; \
|
|
sw_data->probability = _probability; \
|
|
sw_data->caps = gst_caps_new_simple (name, NULL); \
|
|
if (!gst_type_find_register (plugin, name, rank, start_with_type_find,\
|
|
ext, sw_data->caps, sw_data, \
|
|
(GDestroyNotify) (sw_data_destroy))) { \
|
|
gst_caps_unref (sw_data->caps); \
|
|
g_free (sw_data); \
|
|
} \
|
|
}G_END_DECLS
|
|
|
|
/*** same for riff types ***/
|
|
|
|
static void
|
|
riff_type_find (GstTypeFind * tf, gpointer private)
|
|
{
|
|
GstTypeFindData *riff_data = (GstTypeFindData *) private;
|
|
guint8 *data = gst_type_find_peek (tf, 0, 12);
|
|
|
|
if (data && (memcmp (data, "RIFF", 4) == 0 || memcmp (data, "AVF0", 4) == 0)) {
|
|
data += 8;
|
|
if (memcmp (data, riff_data->data, 4) == 0)
|
|
gst_type_find_suggest (tf, riff_data->probability, riff_data->caps);
|
|
}
|
|
}
|
|
|
|
#define TYPE_FIND_REGISTER_RIFF(plugin,name,rank,ext,_data) \
|
|
G_BEGIN_DECLS{ \
|
|
GstTypeFindData *sw_data = g_new (GstTypeFindData, 1); \
|
|
sw_data->data = (gpointer)_data; \
|
|
sw_data->size = 4; \
|
|
sw_data->probability = GST_TYPE_FIND_MAXIMUM; \
|
|
sw_data->caps = gst_caps_new_simple (name, NULL); \
|
|
if (!gst_type_find_register (plugin, name, rank, riff_type_find, \
|
|
ext, sw_data->caps, sw_data, \
|
|
(GDestroyNotify) (sw_data_destroy))) { \
|
|
gst_caps_unref (sw_data->caps); \
|
|
g_free (sw_data); \
|
|
} \
|
|
}G_END_DECLS
|
|
|
|
|
|
/*** plugin initialization ***/
|
|
|
|
#define TYPE_FIND_REGISTER(plugin,name,rank,func,ext,caps,priv,notify) \
|
|
G_BEGIN_DECLS{\
|
|
if (!gst_type_find_register (plugin, name, rank, func, ext, caps, priv, notify))\
|
|
return FALSE; \
|
|
}G_END_DECLS
|
|
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
/* can't initialize this via a struct as caps can't be statically initialized */
|
|
|
|
/* note: asx/wax/wmx are XML files, asf doesn't handle them */
|
|
/* FIXME-0.11: these should be const,
|
|
this requires gstreamer/gst/gsttypefind::gst_type_find_register()
|
|
to have define the parameter as const
|
|
*/
|
|
static gchar *asf_exts[] = { "asf", "wm", "wma", "wmv", NULL };
|
|
static gchar *au_exts[] = { "au", "snd", NULL };
|
|
static gchar *avi_exts[] = { "avi", NULL };
|
|
static gchar *qcp_exts[] = { "qcp", NULL };
|
|
static gchar *cdxa_exts[] = { "dat", NULL };
|
|
static gchar *flac_exts[] = { "flac", NULL };
|
|
static gchar *flx_exts[] = { "flc", "fli", NULL };
|
|
static gchar *id3_exts[] =
|
|
{ "mp3", "mp2", "mp1", "mpga", "ogg", "flac", "tta", NULL };
|
|
static gchar *apetag_exts[] = { "ape", "mpc", "wv", NULL }; /* and mp3 and wav? */
|
|
static gchar *tta_exts[] = { "tta", NULL };
|
|
static gchar *mod_exts[] = { "669", "amf", "dsm", "gdm", "far", "imf",
|
|
"it", "med", "mod", "mtm", "okt", "sam",
|
|
"s3m", "stm", "stx", "ult", "xm", NULL
|
|
};
|
|
static gchar *mp3_exts[] = { "mp3", "mp2", "mp1", "mpga", NULL };
|
|
static gchar *ac3_exts[] = { "ac3", NULL };
|
|
static gchar *gsm_exts[] = { "gsm", NULL };
|
|
static gchar *musepack_exts[] = { "mpc", "mpp", "mp+", NULL };
|
|
static gchar *mpeg_sys_exts[] = { "mpe", "mpeg", "mpg", NULL };
|
|
static gchar *mpeg_video_exts[] = { "mpv", "mpeg", "mpg", NULL };
|
|
static gchar *mpeg_ts_exts[] = { "ts", NULL };
|
|
static gchar *ogg_exts[] = { "anx", "ogg", "ogm", NULL };
|
|
static gchar *qt_exts[] = { "mov", NULL };
|
|
static gchar *qtif_exts[] = { "qif", "qtif", "qti", NULL };
|
|
static gchar *mj2_exts[] = { "mj2", NULL };
|
|
static gchar *jp2_exts[] = { "jp2", NULL };
|
|
static gchar *rm_exts[] = { "ra", "ram", "rm", "rmvb", NULL };
|
|
static gchar *swf_exts[] = { "swf", "swfl", NULL };
|
|
static gchar *utf8_exts[] = { "txt", NULL };
|
|
static gchar *wav_exts[] = { "wav", NULL };
|
|
static gchar *aiff_exts[] = { "aiff", "aif", "aifc", NULL };
|
|
static gchar *svx_exts[] = { "iff", "svx", NULL };
|
|
static gchar *paris_exts[] = { "paf", NULL };
|
|
static gchar *nist_exts[] = { "nist", NULL };
|
|
static gchar *voc_exts[] = { "voc", NULL };
|
|
static gchar *sds_exts[] = { "sds", NULL };
|
|
static gchar *ircam_exts[] = { "sf", NULL };
|
|
static gchar *w64_exts[] = { "w64", NULL };
|
|
static gchar *shn_exts[] = { "shn", NULL };
|
|
static gchar *ape_exts[] = { "ape", NULL };
|
|
static gchar *uri_exts[] = { "ram", NULL };
|
|
static gchar *sdp_exts[] = { "sdp", NULL };
|
|
static gchar *smil_exts[] = { "smil", NULL };
|
|
static gchar *html_exts[] = { "htm", "html", NULL };
|
|
static gchar *xml_exts[] = { "xml", NULL };
|
|
static gchar *jpeg_exts[] = { "jpg", "jpe", "jpeg", NULL };
|
|
static gchar *gif_exts[] = { "gif", NULL };
|
|
static gchar *png_exts[] = { "png", NULL };
|
|
static gchar *bmp_exts[] = { "bmp", NULL };
|
|
static gchar *tiff_exts[] = { "tif", "tiff", NULL };
|
|
static gchar *matroska_exts[] = { "mkv", "mka", NULL };
|
|
static gchar *mve_exts[] = { "mve", NULL };
|
|
static gchar *dv_exts[] = { "dv", "dif", NULL };
|
|
static gchar *amr_exts[] = { "amr", NULL };
|
|
static gchar *ilbc_exts[] = { "ilbc", NULL };
|
|
static gchar *sid_exts[] = { "sid", NULL };
|
|
static gchar *xcf_exts[] = { "xcf", NULL };
|
|
static gchar *mng_exts[] = { "mng", NULL };
|
|
static gchar *jng_exts[] = { "jng", NULL };
|
|
static gchar *xpm_exts[] = { "xpm", NULL };
|
|
static gchar *ras_exts[] = { "ras", NULL };
|
|
static gchar *bz2_exts[] = { "bz2", NULL };
|
|
static gchar *gz_exts[] = { "gz", NULL };
|
|
static gchar *zip_exts[] = { "zip", NULL };
|
|
static gchar *compress_exts[] = { "Z", NULL };
|
|
static gchar *m4a_exts[] = { "m4a", NULL };
|
|
static gchar *q3gp_exts[] = { "3gp", NULL };
|
|
static gchar *aac_exts[] = { "aac", NULL };
|
|
static gchar *spc_exts[] = { "spc", NULL };
|
|
static gchar *wavpack_exts[] = { "wv", "wvp", NULL };
|
|
static gchar *wavpack_correction_exts[] = { "wvc", NULL };
|
|
static gchar *rar_exts[] = { "rar", NULL };
|
|
static gchar *tar_exts[] = { "tar", NULL };
|
|
static gchar *ar_exts[] = { "a", NULL };
|
|
static gchar *msdos_exts[] = { "dll", "exe", "ocx", "sys", "scr",
|
|
"msstyles", "cpl", NULL
|
|
};
|
|
static gchar *flv_exts[] = { "flv", NULL };
|
|
static gchar *m4v_exts[] = { "m4v", NULL };
|
|
static gchar *h264_exts[] = { "h264", "x264", "264", NULL };
|
|
static gchar *nuv_exts[] = { "nuv", NULL };
|
|
static gchar *vivo_exts[] = { "viv", NULL };
|
|
static gchar *nsf_exts[] = { "nsf", NULL };
|
|
static gchar *gym_exts[] = { "gym", NULL };
|
|
static gchar *ay_exts[] = { "ay", NULL };
|
|
static gchar *gbs_exts[] = { "gbs", NULL };
|
|
static gchar *kss_exts[] = { "kss", NULL };
|
|
static gchar *sap_exts[] = { "sap", NULL };
|
|
static gchar *vgm_exts[] = { "vgm", NULL };
|
|
static gchar *mid_exts[] = { "mid", "midi", NULL };
|
|
static gchar *mxmf_exts[] = { "mxmf", NULL };
|
|
static gchar *imelody_exts[] = { "imy", "ime", "imelody", NULL };
|
|
static gchar *pdf_exts[] = { "pdf", NULL };
|
|
static gchar *ps_exts[] = { "ps", NULL };
|
|
static gchar *svg_exts[] = { "svg", NULL };
|
|
static gchar *mxf_exts[] = { "mxf", NULL };
|
|
static gchar *msword_exts[] = { "doc", NULL };
|
|
static gchar *dsstore_exts[] = { "DS_Store", NULL };
|
|
static gchar *psd_exts[] = { "psd", NULL };
|
|
|
|
GST_DEBUG_CATEGORY_INIT (type_find_debug, "typefindfunctions",
|
|
GST_DEBUG_FG_GREEN | GST_DEBUG_BG_RED, "generic type find functions");
|
|
|
|
/* must use strings, macros don't accept initializers */
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-ms-asf", GST_RANK_SECONDARY,
|
|
asf_exts,
|
|
"\060\046\262\165\216\146\317\021\246\331\000\252\000\142\316\154", 16,
|
|
GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-musepack", GST_RANK_PRIMARY,
|
|
musepack_type_find, musepack_exts, MUSEPACK_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-au", GST_RANK_MARGINAL,
|
|
au_type_find, au_exts, AU_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_RIFF (plugin, "video/x-msvideo", GST_RANK_PRIMARY,
|
|
avi_exts, "AVI ");
|
|
TYPE_FIND_REGISTER_RIFF (plugin, "audio/qcelp", GST_RANK_PRIMARY,
|
|
qcp_exts, "QLCM");
|
|
TYPE_FIND_REGISTER_RIFF (plugin, "video/x-cdxa", GST_RANK_PRIMARY,
|
|
cdxa_exts, "CDXA");
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-vcd", GST_RANK_PRIMARY,
|
|
cdxa_exts, "\000\377\377\377\377\377\377\377\377\377\377\000", 12,
|
|
GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-imelody", GST_RANK_PRIMARY,
|
|
imelody_exts, "BEGIN:IMELODY", 13, GST_TYPE_FIND_MAXIMUM);
|
|
#if 0
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-smoke", GST_RANK_PRIMARY,
|
|
NULL, "\x80smoke\x00\x01\x00", 6, GST_TYPE_FIND_MAXIMUM);
|
|
#endif
|
|
TYPE_FIND_REGISTER (plugin, "audio/midi", GST_RANK_PRIMARY, mid_type_find,
|
|
mid_exts, MID_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_RIFF (plugin, "audio/riff-midi", GST_RANK_PRIMARY,
|
|
mid_exts, "RMID");
|
|
TYPE_FIND_REGISTER (plugin, "audio/mobile-xmf", GST_RANK_PRIMARY,
|
|
mxmf_type_find, mxmf_exts, MXMF_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/x-fli", GST_RANK_MARGINAL, flx_type_find,
|
|
flx_exts, FLX_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-id3v2", GST_RANK_PRIMARY + 103,
|
|
id3v2_type_find, id3_exts, ID3_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-id3v1", GST_RANK_PRIMARY + 101,
|
|
id3v1_type_find, id3_exts, ID3_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-apetag", GST_RANK_PRIMARY + 102,
|
|
apetag_type_find, apetag_exts, APETAG_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-ttafile", GST_RANK_PRIMARY,
|
|
tta_type_find, tta_exts, TTA_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-mod", GST_RANK_SECONDARY, mod_type_find,
|
|
mod_exts, MOD_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/mpeg", GST_RANK_PRIMARY, mp3_type_find,
|
|
mp3_exts, MP3_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-ac3", GST_RANK_PRIMARY, ac3_type_find,
|
|
ac3_exts, AC3_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-gsm", GST_RANK_PRIMARY, NULL, gsm_exts,
|
|
GSM_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/mpeg-sys", GST_RANK_PRIMARY,
|
|
mpeg_sys_type_find, mpeg_sys_exts, MPEG_SYS_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/mpegts", GST_RANK_PRIMARY,
|
|
mpeg_ts_type_find, mpeg_ts_exts, MPEGTS_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/ogg", GST_RANK_PRIMARY,
|
|
ogganx_type_find, ogg_exts, OGGANX_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/mpeg-elementary", GST_RANK_MARGINAL,
|
|
mpeg_video_stream_type_find, mpeg_video_exts, MPEG_VIDEO_CAPS, NULL,
|
|
NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/mpeg4", GST_RANK_PRIMARY,
|
|
mpeg4_video_type_find, m4v_exts, MPEG_VIDEO_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/x-h264", GST_RANK_PRIMARY,
|
|
h264_video_type_find, h264_exts, MPEG_VIDEO_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/x-nuv", GST_RANK_SECONDARY, nuv_type_find,
|
|
nuv_exts, NUV_CAPS, NULL, NULL);
|
|
|
|
/* ISO formats */
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-m4a", GST_RANK_PRIMARY, m4a_type_find,
|
|
m4a_exts, M4A_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-3gp", GST_RANK_PRIMARY,
|
|
q3gp_type_find, q3gp_exts, Q3GP_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/quicktime", GST_RANK_SECONDARY,
|
|
qt_type_find, qt_exts, QT_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "image/x-quicktime", GST_RANK_SECONDARY,
|
|
qtif_type_find, qtif_exts, QTIF_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "image/jp2", GST_RANK_PRIMARY,
|
|
jp2_type_find, jp2_exts, JP2_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/mj2", GST_RANK_PRIMARY,
|
|
jp2_type_find, mj2_exts, MJ2_CAPS, NULL, NULL);
|
|
|
|
TYPE_FIND_REGISTER (plugin, "text/html", GST_RANK_SECONDARY, html_type_find,
|
|
html_exts, HTML_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/vnd.rn-realmedia",
|
|
GST_RANK_SECONDARY, rm_exts, ".RMF", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-pn-realaudio",
|
|
GST_RANK_SECONDARY, rm_exts, ".ra\375", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-shockwave-flash",
|
|
GST_RANK_SECONDARY, swf_type_find, swf_exts, SWF_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-flv", GST_RANK_SECONDARY,
|
|
flv_exts, "FLV", 3, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "text/plain", GST_RANK_MARGINAL, utf8_type_find,
|
|
utf8_exts, UTF8_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "text/uri-list", GST_RANK_MARGINAL, uri_type_find,
|
|
uri_exts, URI_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/sdp", GST_RANK_SECONDARY,
|
|
sdp_type_find, sdp_exts, SDP_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/smil", GST_RANK_SECONDARY,
|
|
smil_type_find, smil_exts, SMIL_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/xml", GST_RANK_MARGINAL,
|
|
xml_type_find, xml_exts, GENERIC_XML_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_RIFF (plugin, "audio/x-wav", GST_RANK_PRIMARY, wav_exts,
|
|
"WAVE");
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-aiff", GST_RANK_SECONDARY,
|
|
aiff_type_find, aiff_exts, AIFF_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-svx", GST_RANK_SECONDARY, svx_type_find,
|
|
svx_exts, SVX_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-paris", GST_RANK_SECONDARY,
|
|
paris_type_find, paris_exts, PARIS_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-nist", GST_RANK_SECONDARY,
|
|
nist_exts, "NIST", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-voc", GST_RANK_SECONDARY,
|
|
voc_exts, "Creative", 8, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-sds", GST_RANK_SECONDARY, sds_type_find,
|
|
sds_exts, SDS_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-ircam", GST_RANK_SECONDARY,
|
|
ircam_type_find, ircam_exts, IRCAM_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-w64", GST_RANK_SECONDARY,
|
|
w64_exts, "riff", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-shorten", GST_RANK_SECONDARY,
|
|
shn_type_find, shn_exts, SHN_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-ape", GST_RANK_SECONDARY,
|
|
ape_type_find, ape_exts, APE_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "image/jpeg", GST_RANK_PRIMARY + 15,
|
|
jpeg_type_find, jpeg_exts, JPEG_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "image/gif", GST_RANK_PRIMARY,
|
|
gif_exts, "GIF8", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "image/png", GST_RANK_PRIMARY + 14,
|
|
png_exts, "\211PNG\015\012\032\012", 8, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "image/bmp", GST_RANK_PRIMARY, bmp_type_find,
|
|
bmp_exts, BMP_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "image/tiff", GST_RANK_PRIMARY, tiff_type_find,
|
|
tiff_exts, TIFF_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/x-matroska", GST_RANK_PRIMARY,
|
|
matroska_type_find, matroska_exts, MATROSKA_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/mxf", GST_RANK_PRIMARY,
|
|
mxf_type_find, mxf_exts, MXF_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-mve", GST_RANK_SECONDARY,
|
|
mve_exts, "Interplay MVE File\032\000\032\000\000\001\063\021", 26,
|
|
GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "video/x-dv", GST_RANK_SECONDARY, dv_type_find,
|
|
dv_exts, DV_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-amr-nb-sh", GST_RANK_PRIMARY,
|
|
amr_exts, "#!AMR", 5, GST_TYPE_FIND_LIKELY);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-amr-wb-sh", GST_RANK_PRIMARY,
|
|
amr_exts, "#!AMR-WB", 7, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "audio/iLBC-sh", GST_RANK_PRIMARY,
|
|
ilbc_type_find, ilbc_exts, ILBC_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-sid", GST_RANK_MARGINAL,
|
|
sid_exts, "PSID", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-xcf", GST_RANK_SECONDARY,
|
|
xcf_exts, "gimp xcf", 8, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "video/x-mng", GST_RANK_SECONDARY,
|
|
mng_exts, "\212MNG\015\012\032\012", 8, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-jng", GST_RANK_SECONDARY,
|
|
jng_exts, "\213JNG\015\012\032\012", 8, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-xpixmap", GST_RANK_SECONDARY,
|
|
xpm_exts, "/* XPM */", 9, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "image/x-sun-raster",
|
|
GST_RANK_SECONDARY, ras_exts, "\131\246\152\225", 4,
|
|
GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-bzip",
|
|
GST_RANK_SECONDARY, bz2_exts, "BZh", 3, GST_TYPE_FIND_LIKELY);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-gzip",
|
|
GST_RANK_SECONDARY, gz_exts, "\037\213", 2, GST_TYPE_FIND_LIKELY);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/zip", GST_RANK_SECONDARY,
|
|
zip_exts, "PK\003\004", 4, GST_TYPE_FIND_LIKELY);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-compress",
|
|
GST_RANK_SECONDARY, compress_exts, "\037\235", 2, GST_TYPE_FIND_LIKELY);
|
|
TYPE_FIND_REGISTER (plugin, "subtitle/x-kate", GST_RANK_MARGINAL,
|
|
kate_type_find, NULL, NULL, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-flac", GST_RANK_PRIMARY,
|
|
flac_type_find, flac_exts, FLAC_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-vorbis", GST_RANK_PRIMARY,
|
|
vorbis_type_find, NULL, VORBIS_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/x-theora", GST_RANK_PRIMARY,
|
|
theora_type_find, NULL, THEORA_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-ogm-video", GST_RANK_PRIMARY,
|
|
ogmvideo_type_find, NULL, OGMVIDEO_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-ogm-audio", GST_RANK_PRIMARY,
|
|
ogmaudio_type_find, NULL, OGMAUDIO_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-ogm-text", GST_RANK_PRIMARY,
|
|
ogmtext_type_find, NULL, OGMTEXT_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-speex", GST_RANK_PRIMARY,
|
|
speex_type_find, NULL, SPEEX_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-celt", GST_RANK_PRIMARY,
|
|
celt_type_find, NULL, CELT_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-ogg-skeleton", GST_RANK_PRIMARY,
|
|
oggskel_type_find, NULL, OGG_SKELETON_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "text/x-cmml", GST_RANK_PRIMARY, cmml_type_find,
|
|
NULL, CMML_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-executable",
|
|
GST_RANK_MARGINAL, NULL, "\177ELF", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "adts_mpeg_stream", GST_RANK_SECONDARY,
|
|
aac_type_find, aac_exts, AAC_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-spc", GST_RANK_SECONDARY,
|
|
spc_exts, "SNES-SPC700 Sound File Data", 27, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-wavpack", GST_RANK_SECONDARY,
|
|
wavpack_type_find, wavpack_exts, WAVPACK_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "audio/x-wavpack-correction", GST_RANK_SECONDARY,
|
|
wavpack_type_find, wavpack_correction_exts, WAVPACK_CORRECTION_CAPS, NULL,
|
|
NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/postscript", GST_RANK_SECONDARY,
|
|
postscript_type_find, ps_exts, POSTSCRIPT_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "image/svg+xml", GST_RANK_SECONDARY,
|
|
svg_type_find, svg_exts, SVG_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-rar",
|
|
GST_RANK_SECONDARY, rar_exts, "Rar!", 4, GST_TYPE_FIND_LIKELY);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-tar", GST_RANK_SECONDARY,
|
|
tar_type_find, tar_exts, TAR_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-ar", GST_RANK_SECONDARY,
|
|
ar_type_find, ar_exts, AR_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-ms-dos-executable",
|
|
GST_RANK_SECONDARY, msdos_type_find, msdos_exts, MSDOS_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/x-dirac", GST_RANK_PRIMARY,
|
|
dirac_type_find, NULL, DIRAC_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "multipart/x-mixed-replace", GST_RANK_SECONDARY,
|
|
multipart_type_find, NULL, MULTIPART_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "application/x-mmsh", GST_RANK_SECONDARY,
|
|
mmsh_type_find, NULL, MMSH_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER (plugin, "video/vivo", GST_RANK_SECONDARY,
|
|
vivo_type_find, vivo_exts, VIVO_CAPS, NULL, NULL);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-nsf",
|
|
GST_RANK_SECONDARY, nsf_exts, "NESM\x1a", 5, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-gym",
|
|
GST_RANK_SECONDARY, gym_exts, "GYMX", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-ay",
|
|
GST_RANK_SECONDARY, ay_exts, "ZXAYEMUL", 8, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-gbs",
|
|
GST_RANK_SECONDARY, gbs_exts, "GBS\x01", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-vgm",
|
|
GST_RANK_SECONDARY, vgm_exts, "Vgm\x20", 4, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-sap",
|
|
GST_RANK_SECONDARY, sap_exts, "SAP\x0d\x0aAUTHOR\x20", 12,
|
|
GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "audio/x-kss", GST_RANK_SECONDARY,
|
|
kss_exts, "KSSX\0", 5, GST_TYPE_FIND_MAXIMUM);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/pdf", GST_RANK_SECONDARY,
|
|
pdf_exts, "%PDF-", 5, GST_TYPE_FIND_LIKELY);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/msword",
|
|
GST_RANK_SECONDARY, msword_exts, "\320\317\021\340\241\261\032\341", 8,
|
|
GST_TYPE_FIND_LIKELY);
|
|
/* Mac OS X .DS_Store files tend to be taken for video/mpeg */
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "application/octet-stream",
|
|
GST_RANK_SECONDARY, dsstore_exts, "\000\000\000\001Bud1", 8,
|
|
GST_TYPE_FIND_LIKELY);
|
|
TYPE_FIND_REGISTER_START_WITH (plugin, "image/vnd.adobe.photoshop",
|
|
GST_RANK_SECONDARY, psd_exts, "8BPS\000\001\000\000\000\000", 10,
|
|
GST_TYPE_FIND_LIKELY);
|
|
|
|
#ifdef USE_GIO
|
|
TYPE_FIND_REGISTER (plugin, "xdgmime-base", GST_RANK_MARGINAL,
|
|
xdgmime_typefind, NULL, NULL, NULL, NULL);
|
|
#endif
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"typefindfunctions",
|
|
"default typefind functions",
|
|
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|