enum GstCoreError

typedef enum
{
  GST_CORE_ERROR_FAILED = 1,
  GST_CORE_ERROR_TOO_LAZY,
  GST_CORE_ERROR_NOT_IMPLEMENTED,
  GST_CORE_ERROR_STATE_CHANGE,
  GST_CORE_ERROR_PAD,
  GST_CORE_ERROR_THREAD,
  GST_CORE_ERROR_SCHEDULER,
  GST_CORE_ERROR_NEGOTIATION,
  GST_CORE_ERROR_EVENT,
  GST_CORE_ERROR_SEEK,
  GST_CORE_ERROR_CAPS,
  GST_CORE_ERROR_TAG,
  GST_CORE_ERROR_NUM_ERRORS
} GstCoreError;

Core errors are anything that can go wrong in or using the core GStreamer library

enum GstLibraryError

typedef enum
{
  GST_LIBRARY_ERROR_FAILED = 1,
  GST_LIBRARY_ERROR_TOO_LAZY,
  GST_LIBRARY_ERROR_INIT,
  GST_LIBRARY_ERROR_SHUTDOWN,
  GST_LIBRARY_ERROR_SETTINGS,
  GST_LIBRARY_ERROR_ENCODE,
  GST_LIBRARY_ERROR_NUM_ERRORS
} GstLibraryError;

Library errors are for errors from the library being used by elements initializing, closing, ...

enum GstResourceError

typedef enum
{
  GST_RESOURCE_ERROR_FAILED = 1,
  GST_RESOURCE_ERROR_TOO_LAZY,
  GST_RESOURCE_ERROR_NOT_FOUND,
  GST_RESOURCE_ERROR_BUSY,
  GST_RESOURCE_ERROR_OPEN_READ,
  GST_RESOURCE_ERROR_OPEN_WRITE,
  GST_RESOURCE_ERROR_OPEN_READ_WRITE,
  GST_RESOURCE_ERROR_CLOSE,
  GST_RESOURCE_ERROR_READ,
  GST_RESOURCE_ERROR_WRITE,
  GST_RESOURCE_ERROR_SEEK,
  GST_RESOURCE_ERROR_SYNC,
  GST_RESOURCE_ERROR_SETTINGS,
  GST_RESOURCE_ERROR_NUM_ERRORS
} GstResourceError;

Resource errors are for anything external used by an element: memory, files, network connections, process space, ... They're typically used by source and sink elements

enum GstStreamError

typedef enum
{
  GST_STREAM_ERROR_FAILED = 1,
  GST_STREAM_ERROR_TOO_LAZY,
  GST_STREAM_ERROR_NOT_IMPLEMENTED,
  GST_STREAM_ERROR_TYPE_NOT_FOUND,
  GST_STREAM_ERROR_WRONG_TYPE,
  GST_STREAM_ERROR_CODEC_NOT_FOUND,
  GST_STREAM_ERROR_DECODE,
  GST_STREAM_ERROR_ENCODE,
  GST_STREAM_ERROR_DEMUX,
  GST_STREAM_ERROR_MUX,
  GST_STREAM_ERROR_FORMAT,
  GST_STREAM_ERROR_NUM_ERRORS
} GstStreamError;

Stream errors are for anything related to the stream being processed: format errors, media type errors, ... They're typically used by decoders, demuxers, converters, ...

GST_CORE_ERROR

#define GST_CORE_ERROR      gst_core_error_quark ()

GST_LIBRARY_ERROR

#define GST_LIBRARY_ERROR   gst_library_error_quark ()

GST_RESOURCE_ERROR

#define GST_RESOURCE_ERROR  gst_resource_error_quark ()

GST_STREAM_ERROR

#define GST_STREAM_ERROR    gst_stream_error_quark ()

GST_ERROR_SYSTEM

#define GST_ERROR_SYSTEM    ("system error: %s", g_strerror (errno))

Generates an human readable error message out of an errno number.

gst_error_get_message ()

gchar*      gst_error_get_message           (GQuark domain,
                                             gint code);

gst_stream_error_quark ()

GQuark      gst_stream_error_quark          (void);

gst_core_error_quark ()

GQuark      gst_core_error_quark            (void);

gst_resource_error_quark ()

GQuark      gst_resource_error_quark        (void);

gst_library_error_quark ()

GQuark      gst_library_error_quark         (void);