| /* GStreamer |
| * Copyright (C) <2003> David A. Schleef <ds@schleef.org> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| /** |
| * SECTION:gsterror |
| * @short_description: Categorized error messages |
| * @see_also: #GstMessage |
| * |
| * GStreamer elements can throw non-fatal warnings and fatal errors. |
| * Higher-level elements and applications can programmatically filter |
| * the ones they are interested in or can recover from, |
| * and have a default handler handle the rest of them. |
| * |
| * The rest of this section will use the term <quote>error</quote> |
| * to mean both (non-fatal) warnings and (fatal) errors; they are treated |
| * similarly. |
| * |
| * Errors from elements are the combination of a #GError and a debug string. |
| * The #GError contains: |
| * - a domain type: CORE, LIBRARY, RESOURCE or STREAM |
| * - a code: an enum value specific to the domain |
| * - a translated, human-readable message |
| * - a non-translated additional debug string, which also contains |
| * - file and line information |
| * |
| * Elements do not have the context required to decide what to do with |
| * errors. As such, they should only inform about errors, and stop their |
| * processing. In short, an element doesn't know what it is being used for. |
| * |
| * It is the application or compound element using the given element that |
| * has more context about the use of the element. Errors can be received by |
| * listening to the #GstBus of the element/pipeline for #GstMessage objects with |
| * the type %GST_MESSAGE_ERROR or %GST_MESSAGE_WARNING. The thrown errors should |
| * be inspected, and filtered if appropriate. |
| * |
| * An application is expected to, by default, present the user with a |
| * dialog box (or an equivalent) showing the error message. The dialog |
| * should also allow a way to get at the additional debug information, |
| * so the user can provide bug reporting information. |
| * |
| * A compound element is expected to forward errors by default higher up |
| * the hierarchy; this is done by default in the same way as for other types |
| * of #GstMessage. |
| * |
| * When applications or compound elements trigger errors that they can |
| * recover from, they can filter out these errors and take appropriate action. |
| * For example, an application that gets an error from xvimagesink |
| * that indicates all XVideo ports are taken, the application can attempt |
| * to use another sink instead. |
| * |
| * Elements throw errors using the #GST_ELEMENT_ERROR convenience macro: |
| * |
| * <example> |
| * <title>Throwing an error</title> |
| * <programlisting> |
| * GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, |
| * (_("No file name specified for reading.")), (NULL)); |
| * </programlisting> |
| * </example> |
| * |
| * Things to keep in mind: |
| * <itemizedlist> |
| * <listitem><para>Don't go off inventing new error codes. The ones |
| * currently provided should be enough. If you find your type of error |
| * does not fit the current codes, you should use FAILED.</para></listitem> |
| * <listitem><para>Don't provide a message if the default one suffices. |
| * this keeps messages more uniform. Use (%NULL) - not forgetting the |
| * parentheses.</para></listitem> |
| * <listitem><para>If you do supply a custom message, it should be |
| * marked for translation. The message should start with a capital |
| * and end with a period. The message should describe the error in short, |
| * in a human-readable form, and without any complex technical terms. |
| * A user interface will present this message as the first thing a user |
| * sees. Details, technical info, ... should go in the debug string. |
| * </para></listitem> |
| * <listitem><para>The debug string can be as you like. Again, use (%NULL) |
| * if there's nothing to add - file and line number will still be |
| * passed. #GST_ERROR_SYSTEM can be used as a shortcut to give |
| * debug information on a system call error.</para></listitem> |
| * </itemizedlist> |
| */ |
| |
| /* FIXME 2.0: the entire error system needs an overhaul - it's not very |
| * useful the way it is. Also, we need to be able to specify additional |
| * 'details' for errors (e.g. disk/file/resource error -> out-of-space; or |
| * put the url/filename/device name that caused the error somewhere) |
| * without having to add enums for every little thing. |
| * |
| * FIXME 2.0: get rid of GST_{CORE,LIBRARY,RESOURCE,STREAM}_ERROR_NUM_ERRORS. |
| * Maybe also replace _quark() functions with g_quark_from_static_string()? |
| */ |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "gst_private.h" |
| #include <gst/gst.h> |
| #include "gst-i18n-lib.h" |
| |
| #define QUARK_FUNC(string) \ |
| GQuark gst_ ## string ## _error_quark (void) { \ |
| static GQuark quark; \ |
| if (!quark) \ |
| quark = g_quark_from_static_string ("gst-" # string "-error-quark"); \ |
| return quark; } |
| |
| #define FILE_A_BUG " Please file a bug at " PACKAGE_BUGREPORT "." |
| |
| static const gchar * |
| gst_error_get_core_error (GstCoreError code) |
| { |
| switch (code) { |
| case GST_CORE_ERROR_FAILED: |
| return _("GStreamer encountered a general core library error."); |
| case GST_CORE_ERROR_TOO_LAZY: |
| return _("GStreamer developers were too lazy to assign an error code " |
| "to this error." FILE_A_BUG); |
| case GST_CORE_ERROR_NOT_IMPLEMENTED: |
| return _("Internal GStreamer error: code not implemented." FILE_A_BUG); |
| case GST_CORE_ERROR_STATE_CHANGE: |
| return _("GStreamer error: state change failed and some element failed " |
| "to post a proper error message with the reason for the failure."); |
| case GST_CORE_ERROR_PAD: |
| return _("Internal GStreamer error: pad problem." FILE_A_BUG); |
| case GST_CORE_ERROR_THREAD: |
| return _("Internal GStreamer error: thread problem." FILE_A_BUG); |
| case GST_CORE_ERROR_NEGOTIATION: |
| return _("GStreamer error: negotiation problem."); |
| case GST_CORE_ERROR_EVENT: |
| return _("Internal GStreamer error: event problem." FILE_A_BUG); |
| case GST_CORE_ERROR_SEEK: |
| return _("Internal GStreamer error: seek problem." FILE_A_BUG); |
| case GST_CORE_ERROR_CAPS: |
| return _("Internal GStreamer error: caps problem." FILE_A_BUG); |
| case GST_CORE_ERROR_TAG: |
| return _("Internal GStreamer error: tag problem." FILE_A_BUG); |
| case GST_CORE_ERROR_MISSING_PLUGIN: |
| return _("Your GStreamer installation is missing a plug-in."); |
| case GST_CORE_ERROR_CLOCK: |
| return _("GStreamer error: clock problem."); |
| case GST_CORE_ERROR_DISABLED: |
| return _("This application is trying to use GStreamer functionality " |
| "that has been disabled."); |
| case GST_CORE_ERROR_NUM_ERRORS: |
| default: |
| break; |
| } |
| return NULL; |
| } |
| |
| static const gchar * |
| gst_error_get_library_error (GstLibraryError code) |
| { |
| switch (code) { |
| case GST_LIBRARY_ERROR_FAILED: |
| return _("GStreamer encountered a general supporting library error."); |
| case GST_LIBRARY_ERROR_TOO_LAZY: |
| return _("GStreamer developers were too lazy to assign an error code " |
| "to this error." FILE_A_BUG); |
| case GST_LIBRARY_ERROR_INIT: |
| return _("Could not initialize supporting library."); |
| case GST_LIBRARY_ERROR_SHUTDOWN: |
| return _("Could not close supporting library."); |
| case GST_LIBRARY_ERROR_SETTINGS: |
| return _("Could not configure supporting library."); |
| case GST_LIBRARY_ERROR_ENCODE: |
| return _("Encoding error."); |
| case GST_LIBRARY_ERROR_NUM_ERRORS: |
| default: |
| break; |
| } |
| return NULL; |
| } |
| |
| static const gchar * |
| gst_error_get_resource_error (GstResourceError code) |
| { |
| switch (code) { |
| case GST_RESOURCE_ERROR_FAILED: |
| return _("GStreamer encountered a general resource error."); |
| case GST_RESOURCE_ERROR_TOO_LAZY: |
| return _("GStreamer developers were too lazy to assign an error code " |
| "to this error." FILE_A_BUG); |
| case GST_RESOURCE_ERROR_NOT_FOUND: |
| return _("Resource not found."); |
| case GST_RESOURCE_ERROR_BUSY: |
| return _("Resource busy or not available."); |
| case GST_RESOURCE_ERROR_OPEN_READ: |
| return _("Could not open resource for reading."); |
| case GST_RESOURCE_ERROR_OPEN_WRITE: |
| return _("Could not open resource for writing."); |
| case GST_RESOURCE_ERROR_OPEN_READ_WRITE: |
| return _("Could not open resource for reading and writing."); |
| case GST_RESOURCE_ERROR_CLOSE: |
| return _("Could not close resource."); |
| case GST_RESOURCE_ERROR_READ: |
| return _("Could not read from resource."); |
| case GST_RESOURCE_ERROR_WRITE: |
| return _("Could not write to resource."); |
| case GST_RESOURCE_ERROR_SEEK: |
| return _("Could not perform seek on resource."); |
| case GST_RESOURCE_ERROR_SYNC: |
| return _("Could not synchronize on resource."); |
| case GST_RESOURCE_ERROR_SETTINGS: |
| return _("Could not get/set settings from/on resource."); |
| case GST_RESOURCE_ERROR_NO_SPACE_LEFT: |
| return _("No space left on the resource."); |
| case GST_RESOURCE_ERROR_NOT_AUTHORIZED: |
| return _("Not authorized to access resource."); |
| case GST_RESOURCE_ERROR_NUM_ERRORS: |
| default: |
| break; |
| } |
| return NULL; |
| } |
| |
| static const gchar * |
| gst_error_get_stream_error (GstStreamError code) |
| { |
| switch (code) { |
| case GST_STREAM_ERROR_FAILED: |
| return _("GStreamer encountered a general stream error."); |
| case GST_STREAM_ERROR_TOO_LAZY: |
| return _("GStreamer developers were too lazy to assign an error code " |
| "to this error." FILE_A_BUG); |
| case GST_STREAM_ERROR_NOT_IMPLEMENTED: |
| return _("Element doesn't implement handling of this stream. " |
| "Please file a bug."); |
| case GST_STREAM_ERROR_TYPE_NOT_FOUND: |
| return _("Could not determine type of stream."); |
| case GST_STREAM_ERROR_WRONG_TYPE: |
| return _("The stream is of a different type than handled by this " |
| "element."); |
| case GST_STREAM_ERROR_CODEC_NOT_FOUND: |
| return _("There is no codec present that can handle the stream's type."); |
| case GST_STREAM_ERROR_DECODE: |
| return _("Could not decode stream."); |
| case GST_STREAM_ERROR_ENCODE: |
| return _("Could not encode stream."); |
| case GST_STREAM_ERROR_DEMUX: |
| return _("Could not demultiplex stream."); |
| case GST_STREAM_ERROR_MUX: |
| return _("Could not multiplex stream."); |
| case GST_STREAM_ERROR_FORMAT: |
| return _("The stream is in the wrong format."); |
| case GST_STREAM_ERROR_DECRYPT: |
| return _("The stream is encrypted and decryption is not supported."); |
| case GST_STREAM_ERROR_DECRYPT_NOKEY: |
| return _("The stream is encrypted and can't be decrypted because no " |
| "suitable key has been supplied."); |
| case GST_STREAM_ERROR_NUM_ERRORS: |
| default: |
| break; |
| } |
| |
| return NULL; |
| } |
| |
| QUARK_FUNC (core); |
| QUARK_FUNC (library); |
| QUARK_FUNC (resource); |
| QUARK_FUNC (stream); |
| |
| /** |
| * gst_error_get_message: |
| * @domain: the GStreamer error domain this error belongs to. |
| * @code: the error code belonging to the domain. |
| * |
| * Get a string describing the error message in the current locale. |
| * |
| * Returns: (transfer full): a newly allocated string describing |
| * the error message (in UTF-8 encoding) |
| */ |
| gchar * |
| gst_error_get_message (GQuark domain, gint code) |
| { |
| const gchar *message = NULL; |
| |
| if (domain == GST_CORE_ERROR) |
| message = gst_error_get_core_error ((GstCoreError) code); |
| else if (domain == GST_LIBRARY_ERROR) |
| message = gst_error_get_library_error ((GstLibraryError) code); |
| else if (domain == GST_RESOURCE_ERROR) |
| message = gst_error_get_resource_error ((GstResourceError) code); |
| else if (domain == GST_STREAM_ERROR) |
| message = gst_error_get_stream_error ((GstStreamError) code); |
| else { |
| g_warning ("No error messages for domain %s", g_quark_to_string (domain)); |
| return g_strdup_printf (_("No error message for domain %s."), |
| g_quark_to_string (domain)); |
| } |
| if (message) |
| return g_strdup (message); |
| else |
| return |
| g_strdup_printf (_ |
| ("No standard error message for domain %s and code %d."), |
| g_quark_to_string (domain), code); |
| } |
