mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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183 lines
4.9 KiB
C
183 lines
4.9 KiB
C
/* GStreamer
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* Copyright (C) 2003 Thomas Vander Stichele <thomas@apestaart.org>
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* 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
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* 2005 Andy Wingo <wingo@pobox.com>
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*
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* gst-typefind.c: Use GStreamer to find the type of a file
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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 <string.h>
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#include <locale.h>
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#include "tools.h"
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static void
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have_type_handler (GstElement * typefind, guint probability,
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const GstCaps * caps, GstCaps ** p_caps)
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{
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if (p_caps) {
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*p_caps = gst_caps_copy (caps);
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}
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}
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static void
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typefind_file (const gchar * filename)
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{
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GstStateChangeReturn sret;
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GstElement *pipeline;
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GstElement *source;
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GstElement *typefind;
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GstElement *fakesink;
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GstState state;
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GstCaps *caps = NULL;
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GDir *dir;
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if ((dir = g_dir_open (filename, 0, NULL))) {
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const gchar *entry;
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while ((entry = g_dir_read_name (dir))) {
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gchar *path;
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path = g_strconcat (filename, G_DIR_SEPARATOR_S, entry, NULL);
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typefind_file (path);
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g_free (path);
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}
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g_dir_close (dir);
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return;
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}
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pipeline = gst_pipeline_new ("pipeline");
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source = gst_element_factory_make ("filesrc", "source");
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g_assert (GST_IS_ELEMENT (source));
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typefind = gst_element_factory_make ("typefind", "typefind");
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g_assert (GST_IS_ELEMENT (typefind));
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fakesink = gst_element_factory_make ("fakesink", "fakesink");
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g_assert (GST_IS_ELEMENT (typefind));
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gst_bin_add_many (GST_BIN (pipeline), source, typefind, fakesink, NULL);
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gst_element_link_many (source, typefind, fakesink, NULL);
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g_signal_connect (G_OBJECT (typefind), "have-type",
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G_CALLBACK (have_type_handler), &caps);
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g_object_set (source, "location", filename, NULL);
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GST_DEBUG ("Starting typefinding for %s", filename);
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/* typefind will only commit to PAUSED if it actually finds a type;
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* otherwise the state change fails */
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gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PAUSED);
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/* wait until state change either completes or fails */
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sret = gst_element_get_state (GST_ELEMENT (pipeline), &state, NULL, -1);
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switch (sret) {
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case GST_STATE_CHANGE_FAILURE:{
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GstMessage *msg;
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GstBus *bus;
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GError *err = NULL;
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bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
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msg = gst_bus_poll (bus, GST_MESSAGE_ERROR, 0);
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gst_object_unref (bus);
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if (msg) {
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gst_message_parse_error (msg, &err, NULL);
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g_printerr ("%s - FAILED: %s\n", filename, err->message);
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g_error_free (err);
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gst_message_unref (msg);
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} else {
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g_printerr ("%s - FAILED: unknown error\n", filename);
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}
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break;
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}
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case GST_STATE_CHANGE_SUCCESS:{
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if (caps) {
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gchar *caps_str;
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caps_str = gst_caps_to_string (caps);
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g_print ("%s - %s\n", filename, caps_str);
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g_free (caps_str);
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gst_caps_unref (caps);
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} else {
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g_print ("%s - %s\n", filename, "No type found");
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}
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break;
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}
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default:
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g_assert_not_reached ();
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}
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gst_element_set_state (pipeline, GST_STATE_NULL);
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gst_object_unref (pipeline);
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}
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int
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main (int argc, char *argv[])
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{
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gchar **filenames = NULL;
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guint num, i;
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GError *err = NULL;
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GOptionContext *ctx;
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GOptionEntry options[] = {
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GST_TOOLS_GOPTION_VERSION,
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{G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &filenames, NULL},
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{NULL}
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};
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#ifdef ENABLE_NLS
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bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
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bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
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textdomain (GETTEXT_PACKAGE);
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#endif
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g_set_prgname ("gst-typefind-" GST_API_VERSION);
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ctx = g_option_context_new ("FILES");
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g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
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g_option_context_add_group (ctx, gst_init_get_option_group ());
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if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
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g_print ("Error initializing: %s\n", GST_STR_NULL (err->message));
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exit (1);
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}
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g_option_context_free (ctx);
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gst_tools_print_version ();
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if (filenames == NULL || *filenames == NULL) {
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g_print ("Please give a filename to typefind\n\n");
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return 1;
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}
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num = g_strv_length (filenames);
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for (i = 0; i < num; ++i) {
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typefind_file (filenames[i]);
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}
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g_strfreev (filenames);
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return 0;
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}
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