From c1e6c76cdb550c564f58e84c66b3e993ea36227d Mon Sep 17 00:00:00 2001 From: Edgard Lima Date: Wed, 28 Nov 2007 08:13:52 +0000 Subject: Small fixes in get_range and better structure for generic muxer and demuxer. Original commit message from CVS: Small fixes in get_range and better structure for generic muxer and demuxer. --- ext/metadata/gstmetadatamux.c | 1583 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 1550 insertions(+), 33 deletions(-) (limited to 'ext/metadata/gstmetadatamux.c') diff --git a/ext/metadata/gstmetadatamux.c b/ext/metadata/gstmetadatamux.c index 556191b7..02bb99b6 100644 --- a/ext/metadata/gstmetadatamux.c +++ b/ext/metadata/gstmetadatamux.c @@ -42,13 +42,13 @@ */ /** - * SECTION:element-plugin + * SECTION:metadatamux-metadata * * * Example launch line * * - * gst-launch -v -m filesrc location=./test.jpeg ! metadatamux ! filesink location=meta.jpeg + * gst-launch -v -m filesrc location=./test.jpeg ! metadatamux ! fakesink silent=TRUE * * * @@ -62,9 +62,20 @@ #include "gstmetadatamux.h" +#include "metadataexif.h" + +#include "metadataiptc.h" + +#include "metadataxmp.h" + +#include + GST_DEBUG_CATEGORY_STATIC (gst_metadata_mux_debug); #define GST_CAT_DEFAULT gst_metadata_mux_debug +#define GOTO_DONE_IF_NULL(ptr) do { if ( NULL == (ptr) ) goto done; } while(FALSE) +#define GOTO_DONE_IF_NULL_AND_FAIL(ptr, ret) do { if ( NULL == (ptr) ) { (ret) = FALSE; goto done; } } while(FALSE) + /* Filter signals and args */ enum { @@ -75,6 +86,9 @@ enum enum { ARG_0, + ARG_EXIF, + ARG_IPTC, + ARG_XMP }; static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", @@ -93,22 +107,79 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_BOILERPLATE (GstMetadataMux, gst_metadata_mux, GstElement, GST_TYPE_ELEMENT); +static GstMetadataMuxClass *metadata_parent_class = NULL; + +static void gst_metadata_mux_dispose (GObject * object); + +static void gst_metadata_mux_finalize (GObject * object); + static void gst_metadata_mux_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_metadata_mux_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); +static GstStateChangeReturn +gst_metadata_mux_change_state (GstElement * element, GstStateChange transition); + +static GstCaps *gst_metadata_mux_get_caps (GstPad * pad); static gboolean gst_metadata_mux_set_caps (GstPad * pad, GstCaps * caps); +static gboolean gst_metadata_mux_src_event (GstPad * pad, GstEvent * event); +static gboolean gst_metadata_mux_sink_event (GstPad * pad, GstEvent * event); + static GstFlowReturn gst_metadata_mux_chain (GstPad * pad, GstBuffer * buf); +static gboolean gst_metadata_mux_checkgetrange (GstPad * srcpad); + +static GstFlowReturn +gst_metadata_mux_get_range (GstPad * pad, guint64 offset_orig, guint size, + GstBuffer ** buf); + +static gboolean gst_metadata_mux_sink_activate (GstPad * pad); + +static gboolean +gst_metadata_mux_src_activate_pull (GstPad * pad, gboolean active); + +static gboolean gst_metadata_mux_pull_range_mux (GstMetadataMux * filter); + +static void gst_metadata_mux_init_members (GstMetadataMux * filter); +static void gst_metadata_mux_dispose_members (GstMetadataMux * filter); + +static gboolean gst_metadata_mux_configure_srccaps (GstMetadataMux * filter); +static gboolean gst_metadata_mux_configure_caps (GstMetadataMux * filter); + +static int +gst_metadata_mux_mux (GstMetadataMux * filter, const guint8 * buf, + guint32 size); + +static void gst_metadata_mux_send_tags (GstMetadataMux * filter); + + + +static int +gst_metadata_mux_get_strip_seg (const gint64 offset, guint32 size, + const gint64 seg_offset, const guint32 seg_size, + gint64 * boffset, guint32 * bsize, guint32 * seg_binter); + +static gboolean +gst_metadata_mux_strip_push_buffer (GstMetadataMux * filter, + gint64 offset_orig, GstBuffer ** prepend, GstBuffer ** buf); + +static gboolean +gst_metadata_mux_translate_pos_to_orig (GstMetadataMux * filter, gint64 pos, + gint64 * orig_pos, GstBuffer ** buf); + +static const GstQueryType *gst_metadata_mux_get_query_types (GstPad * pad); + +static gboolean gst_metadata_mux_src_query (GstPad * pad, GstQuery * query); + static void gst_metadata_mux_base_init (gpointer gclass) { static GstElementDetails element_details = { - "PluginTemplate", - "Generic/PluginTemplate", - "Generic Template Element", - "Thomas Vander Stichele " + "Metadata muxer", + "Muxer/Metadata", + "Convert tags to metadata (EXIF, IPTC and XMP) and insert into the stream", + "Edgard Lima " }; GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); @@ -129,9 +200,27 @@ gst_metadata_mux_class_init (GstMetadataMuxClass * klass) gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; + metadata_parent_class = g_type_class_peek_parent (klass); + + gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_metadata_mux_dispose); + gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_metadata_mux_finalize); + gobject_class->set_property = gst_metadata_mux_set_property; gobject_class->get_property = gst_metadata_mux_get_property; + g_object_class_install_property (gobject_class, ARG_EXIF, + g_param_spec_boolean ("exif", "EXIF", "Send EXIF metadata ?", + TRUE, G_PARAM_READWRITE)); + + g_object_class_install_property (gobject_class, ARG_IPTC, + g_param_spec_boolean ("iptc", "IPTC", "Send IPTC metadata ?", + TRUE, G_PARAM_READWRITE)); + + g_object_class_install_property (gobject_class, ARG_XMP, + g_param_spec_boolean ("xmp", "XMP", "Send XMP metadata ?", + TRUE, G_PARAM_READWRITE)); + + gstelement_class->change_state = gst_metadata_mux_change_state; } @@ -145,24 +234,49 @@ gst_metadata_mux_init (GstMetadataMux * filter, GstMetadataMuxClass * gclass) { GstElementClass *klass = GST_ELEMENT_GET_CLASS (filter); + /* sink pad */ + filter->sinkpad = gst_pad_new_from_template (gst_element_class_get_pad_template (klass, "sink"), "sink"); gst_pad_set_setcaps_function (filter->sinkpad, GST_DEBUG_FUNCPTR (gst_metadata_mux_set_caps)); gst_pad_set_getcaps_function (filter->sinkpad, - GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps)); + GST_DEBUG_FUNCPTR (gst_metadata_mux_get_caps)); + gst_pad_set_event_function (filter->sinkpad, gst_metadata_mux_sink_event); + gst_pad_set_chain_function (filter->sinkpad, + GST_DEBUG_FUNCPTR (gst_metadata_mux_chain)); + gst_pad_set_activate_function (filter->sinkpad, + gst_metadata_mux_sink_activate); + + /* source pad */ filter->srcpad = gst_pad_new_from_template (gst_element_class_get_pad_template (klass, "src"), "src"); gst_pad_set_getcaps_function (filter->srcpad, - GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps)); + GST_DEBUG_FUNCPTR (gst_metadata_mux_get_caps)); + gst_pad_set_event_function (filter->srcpad, gst_metadata_mux_src_event); + gst_pad_set_query_function (filter->srcpad, + GST_DEBUG_FUNCPTR (gst_metadata_mux_src_query)); + gst_pad_set_query_type_function (filter->srcpad, + GST_DEBUG_FUNCPTR (gst_metadata_mux_get_query_types)); + gst_pad_use_fixed_caps (filter->srcpad); + + gst_pad_set_checkgetrange_function (filter->srcpad, + GST_DEBUG_FUNCPTR (gst_metadata_mux_checkgetrange)); + gst_pad_set_getrange_function (filter->srcpad, gst_metadata_mux_get_range); + + gst_pad_set_activatepull_function (filter->srcpad, + GST_DEBUG_FUNCPTR (gst_metadata_mux_src_activate_pull)); + /* addind pads */ gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad); gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad); - gst_pad_set_chain_function (filter->sinkpad, - GST_DEBUG_FUNCPTR (gst_metadata_mux_chain)); + + /* init members */ + + gst_metadata_mux_init_members (filter); } @@ -173,6 +287,24 @@ gst_metadata_mux_set_property (GObject * object, guint prop_id, GstMetadataMux *filter = GST_METADATA_MUX (object); switch (prop_id) { + case ARG_EXIF: + if (g_value_get_boolean (value)) + set_meta_option (filter->mux_data, META_OPT_EXIF); + else + unset_meta_option (filter->mux_data, META_OPT_EXIF); + break; + case ARG_IPTC: + if (g_value_get_boolean (value)) + set_meta_option (filter->mux_data, META_OPT_IPTC); + else + unset_meta_option (filter->mux_data, META_OPT_IPTC); + break; + case ARG_XMP: + if (g_value_get_boolean (value)) + set_meta_option (filter->mux_data, META_OPT_XMP); + else + unset_meta_option (filter->mux_data, META_OPT_XMP); + break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; @@ -186,6 +318,18 @@ gst_metadata_mux_get_property (GObject * object, guint prop_id, GstMetadataMux *filter = GST_METADATA_MUX (object); switch (prop_id) { + case ARG_EXIF: + g_value_set_boolean (value, + META_DATA_OPTION (filter->mux_data) & META_OPT_EXIF); + break; + case ARG_IPTC: + g_value_set_boolean (value, + META_DATA_OPTION (filter->mux_data) & META_OPT_IPTC); + break; + case ARG_XMP: + g_value_set_boolean (value, + META_DATA_OPTION (filter->mux_data) & META_OPT_XMP); + break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; @@ -194,49 +338,1422 @@ gst_metadata_mux_get_property (GObject * object, guint prop_id, /* GstElement vmethod implementations */ +static GstCaps * +gst_metadata_mux_get_caps (GstPad * pad) +{ + GstMetadataMux *filter = NULL; + GstPad *otherpad; + GstCaps *caps_new = NULL; + GstCaps *caps_otherpad_peer = NULL; + + filter = GST_METADATA_MUX (gst_pad_get_parent (pad)); + + (filter->srcpad == pad) ? (otherpad = filter->sinkpad) : (otherpad = + filter->srcpad); + + caps_new = gst_caps_copy (gst_pad_get_pad_template_caps (pad)); + + caps_otherpad_peer = gst_pad_get_allowed_caps (otherpad); + GOTO_DONE_IF_NULL (caps_otherpad_peer); + + if (gst_caps_is_empty (caps_otherpad_peer) + || gst_caps_is_any (caps_otherpad_peer)) { + goto done; + } else { + + guint i; + guint caps_size = 0; + + caps_size = gst_caps_get_size (caps_otherpad_peer); + + gst_caps_unref (caps_new); + + caps_new = gst_caps_new_empty (); + + for (i = 0; i < caps_size; ++i) { + GstStructure *structure = NULL; + GstStructure *structure_new = NULL; + const gchar *mime = NULL; + + structure = gst_caps_get_structure (caps_otherpad_peer, i); + + mime = gst_structure_get_name (structure); + + if (pad == filter->sinkpad) { + structure_new = + gst_structure_new (mime, "tags-extracted", G_TYPE_BOOLEAN, FALSE, + NULL); + } else { + structure_new = + gst_structure_new (mime, "tags-extracted", G_TYPE_BOOLEAN, TRUE, + NULL); + } + + gst_caps_append_structure (caps_new, structure_new); + + } + + } + +done: + + if (caps_otherpad_peer) { + gst_caps_unref (caps_otherpad_peer); + caps_otherpad_peer = NULL; + } + + gst_object_unref (filter); + + return caps_new; + +} + +static gboolean +gst_metadata_mux_src_event (GstPad * pad, GstEvent * event) +{ + GstMetadataMux *filter = NULL; + gboolean ret = FALSE; + + filter = GST_METADATA_MUX (gst_pad_get_parent (pad)); + + switch (GST_EVENT_TYPE (event)) { + case GST_EVENT_SEEK: + { + gdouble rate; + GstFormat format; + GstSeekFlags flags; + GstSeekType start_type; + gint64 start; + GstSeekType stop_type; + gint64 stop; + + /* we don't know where are the chunks to be stripped before mux */ + if (filter->state != MT_STATE_MUXED) + goto done; + + gst_event_parse_seek (event, &rate, &format, &flags, + &start_type, &start, &stop_type, &stop); + + switch (format) { + case GST_FORMAT_BYTES: + break; + case GST_FORMAT_PERCENT: + if (filter->duration < 0) + goto done; + start = start * filter->duration / 100; + stop = stop * filter->duration / 100; + break; + default: + goto done; + } + format = GST_FORMAT_BYTES; + + if (start_type == GST_SEEK_TYPE_CUR) + start = filter->offset + start; + else if (start_type == GST_SEEK_TYPE_END) { + if (filter->duration < 0) + goto done; + start = filter->duration + start; + } + start_type == GST_SEEK_TYPE_SET; + + if (filter->prepend_buffer) { + gst_buffer_unref (filter->prepend_buffer); + filter->prepend_buffer = NULL; + } + + /* FIXME: related to append */ + filter->offset = start; + gst_metadata_mux_translate_pos_to_orig (filter, start, &start, + &filter->prepend_buffer); + filter->offset_orig = start; + + if (stop_type == GST_SEEK_TYPE_CUR) + stop = filter->offset + stop; + else if (stop_type == GST_SEEK_TYPE_END) { + if (filter->duration < 0) + goto done; + stop = filter->duration + stop; + } + stop_type == GST_SEEK_TYPE_SET; + + gst_metadata_mux_translate_pos_to_orig (filter, stop, &stop, NULL); + + gst_event_unref (event); + event = gst_event_new_seek (rate, format, flags, + start_type, start, stop_type, stop); + + } + break; + default: + break; + } + + ret = gst_pad_event_default (pad, event); + event = NULL; /* event has another owner */ + +done: + + if (event) { + gst_event_unref (event); + } + + gst_object_unref (filter); + + return ret; + +} + +static gboolean +gst_metadata_mux_sink_event (GstPad * pad, GstEvent * event) +{ + GstMetadataMux *filter = NULL; + gboolean ret = FALSE; + + filter = GST_METADATA_MUX (gst_pad_get_parent (pad)); + + switch (GST_EVENT_TYPE (event)) { + case GST_EVENT_EOS: + if (filter->need_more_data) { + GST_ELEMENT_WARNING (filter, STREAM, DEMUX, (NULL), + ("Need more data. Unexpected EOS")); + } + break; + case GST_EVENT_TAG: + break; + default: + break; + } + + ret = gst_pad_event_default (pad, event); + + gst_object_unref (filter); + + return ret; + +} + +static void +gst_metadata_mux_dispose (GObject * object) +{ + GstMetadataMux *filter = NULL; + + filter = GST_METADATA_MUX (object); + + gst_metadata_mux_dispose_members (filter); + + G_OBJECT_CLASS (metadata_parent_class)->dispose (object); +} + +static void +gst_metadata_mux_finalize (GObject * object) +{ + G_OBJECT_CLASS (metadata_parent_class)->finalize (object); +} + +static void +gst_metadata_mux_dispose_members (GstMetadataMux * filter) +{ + metadata_dispose (&filter->mux_data); + + if (filter->adapter_parsing) { + gst_object_unref (filter->adapter_parsing); + filter->adapter_parsing = NULL; + } + + if (filter->adapter_holding) { + gst_object_unref (filter->adapter_holding); + filter->adapter_holding = NULL; + } + + if (filter->taglist) { + gst_tag_list_free (filter->taglist); + filter->taglist = NULL; + } + + if (filter->append_buffer) { + gst_buffer_unref (filter->append_buffer); + filter->append_buffer = NULL; + } + + if (filter->prepend_buffer) { + gst_buffer_unref (filter->prepend_buffer); + filter->prepend_buffer = NULL; + } +} + +static void +gst_metadata_mux_init_members (GstMetadataMux * filter) +{ + filter->need_send_tag = FALSE; + filter->exif = TRUE; + filter->iptc = TRUE; + filter->xmp = TRUE; + + filter->taglist = NULL; + filter->adapter_parsing = NULL; + filter->adapter_holding = NULL; + filter->next_offset = 0; + filter->next_size = 0; + filter->img_type = IMG_NONE; + filter->offset_orig = 0; + filter->duration_orig = 0; + filter->offset = 0; + filter->duration = 0; + filter->state = MT_STATE_NULL; + filter->need_more_data = FALSE; + + filter->append_buffer = NULL; + filter->prepend_buffer = NULL; + + memset (&filter->mux_data, 0x00, sizeof (MetaData)); +} + +static gboolean +gst_metadata_mux_configure_srccaps (GstMetadataMux * filter) +{ + GstCaps *caps = NULL; + gboolean ret = FALSE; + gchar *mime = NULL; + + switch (filter->img_type) { + case IMG_JPEG: + mime = "image/jpeg"; + break; + case IMG_PNG: + mime = "image/png"; + break; + default: + ret = FALSE; + goto done; + break; + } + + caps = + gst_caps_new_simple (mime, "tags-extracted", G_TYPE_BOOLEAN, TRUE, NULL); + + ret = gst_pad_set_caps (filter->srcpad, caps); + +done: + + if (caps) { + gst_caps_unref (caps); + caps = NULL; + } + + return ret; + +} + +static gboolean +gst_metadata_mux_configure_caps (GstMetadataMux * filter) +{ + GstCaps *caps = NULL; + gboolean ret = FALSE; + gchar *mime = NULL; + GstPad *peer = NULL; + + peer = gst_pad_get_peer (filter->sinkpad); + + switch (filter->img_type) { + case IMG_JPEG: + mime = "image/jpeg"; + break; + case IMG_PNG: + mime = "image/png"; + break; + default: + goto done; + break; + } + + caps = gst_caps_new_simple (mime, NULL); + + if (!gst_pad_set_caps (peer, caps)) { + goto done; + } + + ret = gst_pad_set_caps (filter->sinkpad, caps); + +done: + + if (caps) { + gst_caps_unref (caps); + caps = NULL; + } + + if (peer) { + gst_object_unref (peer); + peer = NULL; + } + + return ret; + +} + /* this function handles the link with other elements */ static gboolean gst_metadata_mux_set_caps (GstPad * pad, GstCaps * caps) { - GstMetadataMux *filter; - GstPad *otherpad; + GstMetadataMux *filter = NULL; + GstStructure *structure = NULL; + const gchar *mime = NULL; + gboolean ret = FALSE; + gboolean muxd = TRUE; filter = GST_METADATA_MUX (gst_pad_get_parent (pad)); - otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad; - return gst_pad_set_caps (pad, caps); + structure = gst_caps_get_structure (caps, 0); + + mime = gst_structure_get_name (structure); + + if (strcmp (mime, "image/jpeg") == 0) { + filter->img_type = IMG_JPEG; + } else if (strcmp (mime, "image/png") == 0) { + filter->img_type = IMG_PNG; + } else { + ret = FALSE; + goto done; + } + + if (gst_structure_get_boolean (structure, "tags-extracted", &muxd)) { + if (muxd == TRUE) { + ret = FALSE; + goto done; + } + } + + ret = gst_metadata_mux_configure_srccaps (filter); + +done: + + gst_object_unref (filter); + + return ret; } -/* chain function - * this function does the actual processing - */ +static const gchar * +gst_metadata_mux_get_type_name (int img_type) +{ + gchar *type_name = NULL; -static GstFlowReturn -gst_metadata_mux_chain (GstPad * pad, GstBuffer * buf) + switch (img_type) { + case IMG_JPEG: + type_name = "jpeg"; + break; + case IMG_PNG: + type_name = "png"; + break; + default: + type_name = "invalid type"; + break; + } + return type_name; +} + +static void +gst_metadata_mux_send_tags (GstMetadataMux * filter) { - GstMetadataMux *filter; - filter = GST_METADATA_MUX (GST_OBJECT_PARENT (pad)); + GstMessage *msg; + GstTagList *taglist; + GstEvent *event; + + if (META_DATA_OPTION (filter->mux_data) & META_OPT_EXIF) + metadatamux_exif_create_chunk_from_tag_list (&filter->mux_data.exif_adapter, + filter->taglist); + + if (META_DATA_OPTION (filter->mux_data) & META_OPT_IPTC) + metadatamux_iptc_create_chunk_from_tag_list (&filter->mux_data.iptc_adapter, + filter->taglist); + + if (META_DATA_OPTION (filter->mux_data) & META_OPT_XMP) + metadatamux_xmp_create_chunk_from_tag_list (&filter->mux_data.exif_adapter, + filter->taglist); + + + if (!gst_tag_list_is_empty (filter->taglist)) { + + taglist = gst_tag_list_copy (filter->taglist); + msg = gst_message_new_tag (GST_OBJECT (filter), taglist); + gst_element_post_message (GST_ELEMENT (filter), msg); - /* just push out the incoming buffer without touching it */ - return gst_pad_push (filter->srcpad, buf); + taglist = gst_tag_list_copy (filter->taglist); + event = gst_event_new_tag (taglist); + gst_pad_push_event (filter->srcpad, event); + } + + + + filter->need_send_tag = FALSE; } +static const GstQueryType * +gst_metadata_mux_get_query_types (GstPad * pad) +{ + static const GstQueryType gst_metadata_mux_src_query_types[] = { + GST_QUERY_POSITION, + GST_QUERY_DURATION, + GST_QUERY_FORMATS, + 0 + }; -/* entry point to initialize the plug-in - * initialize the plug-in itself - * register the element factories and pad templates - * register the features - * - * exchange the string 'plugin' with your elemnt name + return gst_metadata_mux_src_query_types; +} + +static gboolean +gst_metadata_mux_src_query (GstPad * pad, GstQuery * query) +{ + gboolean ret = FALSE; + GstFormat format; + GstMetadataMux *filter = GST_METADATA_MUX (gst_pad_get_parent (pad)); + + switch (GST_QUERY_TYPE (query)) { + case GST_QUERY_POSITION: + gst_query_parse_position (query, &format, NULL); + + if (format == GST_FORMAT_BYTES) { + gst_query_set_position (query, GST_FORMAT_BYTES, filter->offset); + ret = TRUE; + } + break; + case GST_QUERY_DURATION: + if (filter->state != MT_STATE_MUXED) + goto done; + + gst_query_parse_duration (query, &format, NULL); + + if (format == GST_FORMAT_BYTES) { + if (filter->duration >= 0) { + gst_query_set_duration (query, GST_FORMAT_BYTES, filter->duration); + ret = TRUE; + } + } + break; + case GST_QUERY_FORMATS: + gst_query_set_formats (query, 1, GST_FORMAT_BYTES); + ret = TRUE; + break; + default: + break; + } + +done: + + gst_object_unref (filter); + + return ret; + +} + +/* + * return: + * -1 -> error + * 0 -> succeded + * 1 -> need more data */ + +static int +gst_metadata_mux_mux (GstMetadataMux * filter, const guint8 * buf, guint32 size) +{ + + int ret = -1; + + filter->next_offset = 0; + filter->next_size = 0; + + ret = metadata_parse (&filter->mux_data, buf, size, + &filter->next_offset, &filter->next_size); + + if (ret < 0) { + if (META_DATA_IMG_TYPE (filter->mux_data) == IMG_NONE) { + /* image type not recognized */ + GST_ELEMENT_ERROR (filter, STREAM, TYPE_NOT_FOUND, (NULL), + ("Only jpeg and png are supported")); + goto done; + } + } else if (ret > 0) { + filter->need_more_data = TRUE; + } else { + int i, j; + guint32 append_size; + guint32 bytes_striped, bytes_inject; + MetadataChunk *strip = filter->mux_data.strip_chunks.chunk; + MetadataChunk *inject = filter->mux_data.inject_chunks.chunk; + const gsize strip_len = filter->mux_data.strip_chunks.len; + const gsize inject_len = filter->mux_data.inject_chunks.len; + + bytes_striped = 0; + bytes_inject = 0; + + /* calculate the new position off injected chunks */ + for (i = 0; i < inject_len; ++i) { + for (j = 0; j < strip_len; ++i) { + if (strip[j].offset_orig >= inject[i].offset_orig) { + break; + } + inject[i].offset = inject[i].offset_orig - bytes_striped + bytes_inject; + bytes_striped += strip[j].size; + } + bytes_inject += inject[i].size; + } + + /* calculate append (doesnt make much sense, but, anyway..) */ + append_size = 0; + for (i = inject_len - 1; i >= 0; --i) { + if (inject[i].offset_orig == filter->duration_orig) + append_size += inject[i].size; + else + break; + } + if (append_size) { + guint8 *data; + + filter->append_buffer = gst_buffer_new_and_alloc (append_size); + GST_BUFFER_FLAG_SET (filter->append_buffer, GST_BUFFER_FLAG_READONLY); + data = GST_BUFFER_DATA (filter->append_buffer); + for (i = inject_len - 1; i >= 0; --i) { + if (inject[i].offset_orig == filter->duration_orig) { + memcpy (data, inject[i].data, inject[i].size); + data += inject[i].size; + } else { + break; + } + } + } + + filter->state = MT_STATE_MUXED; + filter->need_more_data = FALSE; + filter->need_send_tag = TRUE; + } + + if (filter->img_type != META_DATA_IMG_TYPE (filter->mux_data)) { + filter->img_type = META_DATA_IMG_TYPE (filter->mux_data); + if (!gst_metadata_mux_configure_caps (filter)) { + GST_ELEMENT_ERROR (filter, STREAM, FORMAT, (NULL), + ("Couldn't reconfigure caps for %s", + gst_metadata_mux_get_type_name (filter->img_type))); + ret = -1; + goto done; + } + } + +done: + + return ret; + +} + +/* chain function + * this function does the actual processing + */ + +/* FIXME */ +/* Current mux is just done before is pull mode could be activated */ +/* may be it is possible to mux in chain mode by doing some trick with gst-adapter */ +/* the pipeline below would be a test for that case */ +/* gst-launch-0.10 filesrc location=Exif.jpg ! queue ! metadatamux ! filesink location=gen3.jpg */ + +static GstFlowReturn +gst_metadata_mux_chain (GstPad * pad, GstBuffer * buf) +{ + GstMetadataMux *filter = NULL; + GstFlowReturn ret = GST_FLOW_ERROR; + guint32 buf_size = 0; + guint32 new_buf_size = 0; + gboolean append = FALSE; + + filter = GST_METADATA_MUX (gst_pad_get_parent (pad)); + + if (filter->state != MT_STATE_MUXED) { + guint32 adpt_size = gst_adapter_available (filter->adapter_parsing); + + if (filter->next_offset) { + if (filter->next_offset >= adpt_size) { + /* clean adapter */ + gst_adapter_clear (filter->adapter_parsing); + filter->next_offset -= adpt_size; + if (filter->next_offset >= GST_BUFFER_SIZE (buf)) { + /* we don't need data in this buffer */ + filter->next_offset -= GST_BUFFER_SIZE (buf); + } else { + GstBuffer *new_buf; + + /* add to adapter just need part from buf */ + new_buf = + gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buf) - + filter->next_offset); + memcpy (GST_BUFFER_DATA (new_buf), + GST_BUFFER_DATA (buf) + filter->next_offset, + GST_BUFFER_SIZE (buf) - filter->next_offset); + filter->next_offset = 0; + gst_adapter_push (filter->adapter_parsing, new_buf); + } + } else { + /* remove first bytes and add buffer */ + gst_adapter_flush (filter->adapter_parsing, filter->next_offset); + filter->next_offset = 0; + gst_adapter_push (filter->adapter_parsing, gst_buffer_copy (buf)); + } + } else { + /* just push buffer */ + gst_adapter_push (filter->adapter_parsing, gst_buffer_copy (buf)); + } + + adpt_size = gst_adapter_available (filter->adapter_parsing); + + if (adpt_size && filter->next_size <= adpt_size) { + const guint8 *new_buf = + gst_adapter_peek (filter->adapter_parsing, adpt_size); + + if (gst_metadata_mux_mux (filter, new_buf, adpt_size) < 0) + goto done; + } + } + + if (filter->state == MT_STATE_MUXED) { + + if (filter->adapter_holding) { + gst_adapter_push (filter->adapter_holding, buf); + buf = gst_adapter_take_buffer (filter->adapter_holding, + gst_adapter_available (filter->adapter_holding)); + g_object_unref (filter->adapter_holding); + filter->adapter_holding = NULL; + } + + if (filter->need_send_tag) { + gst_metadata_mux_send_tags (filter); + } + + if (filter->offset_orig + GST_BUFFER_SIZE (buf) == filter->duration_orig) + append = TRUE; + + buf_size = GST_BUFFER_SIZE (buf); + + gst_metadata_mux_strip_push_buffer (filter, filter->offset_orig, + &filter->prepend_buffer, &buf); + + if (buf) { /* may be all buffer has been striped */ + gst_buffer_set_caps (buf, GST_PAD_CAPS (filter->srcpad)); + new_buf_size = GST_BUFFER_SIZE (buf); + + ret = gst_pad_push (filter->srcpad, buf); + buf = NULL; /* this function don't owner it anymore */ + if (ret != GST_FLOW_OK) + goto done; + } else { + ret = GST_FLOW_OK; + } + + if (append && filter->append_buffer) { + gst_buffer_set_caps (filter->append_buffer, + GST_PAD_CAPS (filter->srcpad)); + gst_buffer_ref (filter->append_buffer); + ret = gst_pad_push (filter->srcpad, filter->append_buffer); + if (ret != GST_FLOW_OK) + goto done; + } + + filter->offset_orig += buf_size; + filter->offset += new_buf_size; + + } else { + /* just store while still not muxd */ + if (!filter->adapter_holding) + filter->adapter_holding = gst_adapter_new (); + gst_adapter_push (filter->adapter_holding, buf); + buf = NULL; + ret = GST_FLOW_OK; + } + +done: + + + if (buf) { + /* there was an error and buffer wasn't pushed */ + gst_buffer_unref (buf); + buf = NULL; + } + + gst_object_unref (filter); + + return ret; + +} + +static gboolean +gst_metadata_mux_pull_range_mux (GstMetadataMux * filter) +{ + + int res; + gboolean ret = TRUE; + guint32 offset = 0; + gint64 duration = 0; + GstFormat format = GST_FORMAT_BYTES; + + if (!(ret = + gst_pad_query_peer_duration (filter->sinkpad, &format, &duration))) { + /* this should never happen, but try chain anyway */ + ret = TRUE; + goto done; + } + if (format != GST_FORMAT_BYTES) { + /* this should never happen, but try chain anyway */ + ret = TRUE; + goto done; + } + + do { + GstFlowReturn flow; + GstBuffer *buf = NULL; + + offset += filter->next_offset; + + if (filter->next_size < 4096) { + if (duration - offset < 4096) { + filter->next_size = duration - offset; + } else { + filter->next_size = 4096; + } + } + + flow = + gst_pad_pull_range (filter->sinkpad, offset, filter->next_size, &buf); + if (GST_FLOW_OK != flow) { + ret = FALSE; + goto done; + } + + res = + gst_metadata_mux_mux (filter, GST_BUFFER_DATA (buf), + GST_BUFFER_SIZE (buf)); + if (res < 0) { + ret = FALSE; + goto done; + } + + gst_buffer_unref (buf); + + } while (res > 0); + + if (res == 0) { + int i; + MetadataChunk *strip = filter->mux_data.strip_chunks.chunk; + MetadataChunk *inject = filter->mux_data.inject_chunks.chunk; + const gsize strip_len = filter->mux_data.strip_chunks.len; + const gsize inject_len = filter->mux_data.inject_chunks.len; + + filter->duration = duration; + filter->duration_orig = duration; + + for (i = 0; i < inject_len; ++i) { + filter->duration += inject[i].size; + } + for (i = 0; i < strip_len; ++i) { + filter->duration -= strip[i].size; + } + + } + +done: + + return ret; + +} + +static gboolean +gst_metadata_mux_sink_activate (GstPad * pad) +{ + GstMetadataMux *filter = NULL; + gboolean ret = TRUE; + + + filter = GST_METADATA_MUX (GST_PAD_PARENT (pad)); + + if (!gst_pad_check_pull_range (pad) || + !gst_pad_activate_pull (filter->sinkpad, TRUE)) { + /* FIXME: currently it is not possible to mux in chain. Fail here ? */ + /* nothing to be done by now, activate push mode */ + return gst_pad_activate_push (pad, TRUE); + } + + /* try to mux */ + if (filter->state == MT_STATE_NULL) { + ret = gst_metadata_mux_pull_range_mux (filter); + } + +done: + + if (ret) { + gst_pad_activate_pull (pad, FALSE); + gst_pad_activate_push (filter->srcpad, FALSE); + if (!gst_pad_is_active (pad)) { + ret = gst_pad_activate_push (filter->srcpad, TRUE); + ret = ret && gst_pad_activate_push (pad, TRUE); + } + } + + return ret; + +} + +/* + * offset - offset of buffer in original stream + * size - size of buffer + * seg_offset - offset of segment in original stream + * seg_size - size of segment + * boffset - offset inside buffer where segment starts (-1 for no intersection) + * bsize - size of intersection + * seg_binter - if segment start inside buffer is zero. if segment start before + * buffer and intersect, it is the offset inside segment. + * + * ret: + * -1 - segment before buffer + * 0 - segment intersects + * 1 - segment after buffer + */ + +static int +gst_metadata_mux_get_strip_seg (const gint64 offset, guint32 size, + const gint64 seg_offset, const guint32 seg_size, + gint64 * boffset, guint32 * bsize, guint32 * seg_binter) +{ + int ret = -1; + + *boffset = -1; + *bsize = 0; + *seg_binter = -1; + + /* all segment after buffer */ + if (seg_offset >= offset + size) { + ret = 1; + goto done; + } + + if (seg_offset < offset) { + /* segment start somewhere before buffer */ + + /* all segment before buffer */ + if (seg_offset + seg_size <= offset) { + ret = -1; + goto done; + } + + *seg_binter = offset - seg_offset; + *boffset = 0; + + /* FIXME : optimize to >= size -> = size */ + if (seg_offset + seg_size >= offset + size) { + /* segment cover all buffer */ + *bsize = size; + } else { + /* segment goes from start of buffer to somewhere before end */ + *bsize = seg_size - *seg_binter; + } + + ret = 0; + + } else { + /* segment start somewhere into buffer */ + + *boffset = seg_offset - offset; + *seg_binter = 0; + + if (seg_offset + seg_size <= offset + size) { + /* all segment into buffer */ + *bsize = seg_size; + } else { + *bsize = size - *boffset; + } + + ret = 0; + + } + +done: + + return ret; + +} + +/* + * TRUE -> buffer striped or injeted + * FALSE -> buffer unmodified + */ + +static gboolean +gst_metadata_mux_strip_push_buffer (GstMetadataMux * filter, + gint64 offset_orig, GstBuffer ** prepend, GstBuffer ** buf) +{ + MetadataChunk *strip = filter->mux_data.strip_chunks.chunk; + MetadataChunk *inject = filter->mux_data.inject_chunks.chunk; + const gsize strip_len = filter->mux_data.strip_chunks.len; + const gsize inject_len = filter->mux_data.inject_chunks.len; + + guint32 size_buf_in = GST_BUFFER_SIZE (*buf); + + gint64 *boffset_strip = NULL; + guint32 *bsize_strip = NULL; + guint32 *seg_binter_strip = NULL; + + int i, j; + gboolean need_free_strip = FALSE; + + guint32 striped_bytes = 0; + guint32 injected_bytes = 0; + + guint32 prepend_size = prepend && *prepend ? GST_BUFFER_SIZE (*prepend) : 0; + + if (inject_len) { + + for (i = 0; i < inject_len; ++i) { + int res; + + if (inject[i].offset_orig >= offset_orig) { + if (inject[i].offset_orig < offset_orig + size_buf_in) { + injected_bytes += inject[i].size; + } else { + /* segment is after size (segments are sorted) */ + break; + } + } + } + + } + + /* + * strip segments + */ + + if (strip_len == 0) + goto inject; + + if (G_UNLIKELY (strip_len > 16)) { + boffset_strip = g_new (gint64, strip_len); + bsize_strip = g_new (guint32, strip_len); + seg_binter_strip = g_new (guint32, strip_len); + need_free_strip = TRUE; + } else { + boffset_strip = g_alloca (sizeof (boffset_strip[0]) * strip_len); + bsize_strip = g_alloca (sizeof (bsize_strip[0]) * strip_len); + seg_binter_strip = g_alloca (sizeof (seg_binter_strip[0]) * strip_len); + } + + memset (bsize_strip, 0x00, sizeof (bsize_strip[0]) * strip_len); + + for (i = 0; i < strip_len; ++i) { + int res; + + res = gst_metadata_mux_get_strip_seg (offset_orig, size_buf_in, + strip[i].offset_orig, strip[i].size, &boffset_strip[i], &bsize_strip[i], + &seg_binter_strip[i]); + + /* segment is after size (segments are sorted) */ + striped_bytes += bsize_strip[i]; + if (res > 0) { + break; + } + + } + + if (striped_bytes) { + + guint8 *data; + + if (injected_bytes + prepend_size > striped_bytes) { + GstBuffer *new_buf = + gst_buffer_new_and_alloc (GST_BUFFER_SIZE (*buf) + injected_bytes + + prepend_size - striped_bytes); + + memcpy (GST_BUFFER_DATA (new_buf), GST_BUFFER_DATA (*buf), + GST_BUFFER_SIZE (*buf)); + + gst_buffer_unref (*buf); + *buf = new_buf; + + } else if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY)) { + GstBuffer *new_buf = gst_buffer_copy (*buf); + + gst_buffer_unref (*buf); + *buf = new_buf; + GST_BUFFER_FLAG_UNSET (*buf, GST_BUFFER_FLAG_READONLY); + GST_BUFFER_SIZE (*buf) += injected_bytes + prepend_size - striped_bytes; + } + + data = GST_BUFFER_DATA (*buf); + + striped_bytes = 0; + for (i = 0; i < strip_len; ++i) { + /* intersect */ + if (bsize_strip[i]) { + memmove (data + boffset_strip[i] - striped_bytes, + data + boffset_strip[i] + bsize_strip[i] - striped_bytes, + size_buf_in - boffset_strip[i] - bsize_strip[i]); + striped_bytes += bsize_strip[i]; + } + } + size_buf_in -= striped_bytes; + + } + +inject: + + /* + * inject segments + */ + + if (inject_len) { + + guint8 *data; + guint32 striped_so_far; + + if (injected_bytes + prepend_size > striped_bytes) { + GstBuffer *new_buf = + gst_buffer_new_and_alloc (GST_BUFFER_SIZE (*buf) + injected_bytes + + prepend_size - striped_bytes); + + memcpy (GST_BUFFER_DATA (new_buf), GST_BUFFER_DATA (*buf), + GST_BUFFER_SIZE (*buf)); + + gst_buffer_unref (*buf); + *buf = new_buf; + + } else if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY)) { + GstBuffer *new_buf = gst_buffer_copy (*buf); + + gst_buffer_unref (*buf); + *buf = new_buf; + GST_BUFFER_FLAG_UNSET (*buf, GST_BUFFER_FLAG_READONLY); + GST_BUFFER_SIZE (*buf) += injected_bytes + prepend_size - striped_bytes; + } + + data = GST_BUFFER_DATA (*buf); + + injected_bytes = 0; + striped_so_far = 0; + j = 0; + for (i = 0; i < inject_len; ++i) { + int res; + + while (j < strip_len) { + if (strip[j].offset_orig < inject[i].offset_orig) + striped_so_far += bsize_strip[j++]; + else + break; + } + + if (inject[i].offset_orig >= offset_orig) { + if (inject[i].offset_orig < offset_orig + size_buf_in + striped_bytes) { + /* insert */ + guint32 buf_off = + inject[i].offset_orig - offset_orig - striped_so_far + + injected_bytes; + memmove (data + buf_off + inject[i].size, data + buf_off, + size_buf_in - buf_off); + memcpy (data + buf_off, inject[i].data, inject[i].size); + injected_bytes += inject[i].size; + size_buf_in += injected_bytes; + } else { + /* segment is after size (segments are sorted) */ + break; + } + } + } + + } + + +done: + + if (prepend_size) { + if (injected_bytes == 0 && striped_bytes == 0) { + GstBuffer *new_buf = + gst_buffer_new_and_alloc (size_buf_in + prepend_size); + + memcpy (GST_BUFFER_DATA (new_buf) + prepend_size, GST_BUFFER_DATA (*buf), + size_buf_in); + + gst_buffer_unref (*buf); + *buf = new_buf; + } else { + memmove (GST_BUFFER_DATA (*buf) + prepend_size, GST_BUFFER_DATA (*buf), + size_buf_in); + } + memcpy (GST_BUFFER_DATA (*buf), GST_BUFFER_DATA (*prepend), prepend_size); + gst_buffer_unref (*prepend); + *prepend = NULL; + } + + GST_BUFFER_SIZE (*buf) = size_buf_in + prepend_size; + + if (need_free_strip) { + g_free (boffset_strip); + g_free (bsize_strip); + g_free (seg_binter_strip); + } + + return injected_bytes || striped_bytes; + +} + +/* + * pos - position in stream striped + * orig_pos - position in original stream + * return TRUE - position in original buffer + * FALSE - position in inserted chunk + */ +static gboolean +gst_metadata_mux_translate_pos_to_orig (GstMetadataMux * filter, gint64 pos, + gint64 * orig_pos, GstBuffer ** buf) +{ + int i; + MetadataChunk *strip = filter->mux_data.strip_chunks.chunk; + MetadataChunk *inject = filter->mux_data.inject_chunks.chunk; + const gsize strip_len = filter->mux_data.strip_chunks.len; + const gsize inject_len = filter->mux_data.inject_chunks.len; + gboolean ret = TRUE; + guint64 new_buf_size = 0; + guint64 injected_before = 0; + + if (G_UNLIKELY (pos == -1)) { + *orig_pos = -1; + return TRUE; + } else if (G_UNLIKELY (pos >= filter->duration)) { + /* this should never happen */ + *orig_pos = filter->duration_orig; + return TRUE; + } + + /* calculate for injected */ + + /* just calculate size */ + *orig_pos = pos; /* save pos */ + for (i = 0; i < inject_len; ++i) { + /* check if pos in inside chunk */ + if (inject[i].offset <= pos) { + if (pos < inject[i].offset + inject[i].size) { + /* orig pos points after insert chunk */ + new_buf_size += inject[i].size; + /* put pos after current chunk */ + pos = inject[i].offset + inject[i].size; + ret = FALSE; + } else { + /* in case pos is not inside a injected chunk */ + injected_before += inject[i].size; + } + } else { + break; + } + } + + /* alloc buffer and calcute original pos */ + if (buf && ret == FALSE) { + guint8 *data; + + if (*buf) + gst_buffer_unref (*buf); + *buf = gst_buffer_new_and_alloc (new_buf_size); + data = GST_BUFFER_DATA (*buf); + pos = *orig_pos; /* recover saved pos */ + for (i = 0; i < inject_len; ++i) { + if (inject[i].offset > pos) { + break; + } + if (inject[i].offset <= pos && pos < inject[i].offset + inject[i].size) { + memcpy (data, inject[i].data, inject[i].size); + data += inject[i].size; + pos = inject[i].offset + inject[i].size; + /* out position after insert chunk orig */ + *orig_pos = inject[i].offset_orig + inject[i].size; + } + } + } + + if (ret == FALSE) { + /* if it inside a injected is already done */ + goto done; + } + + /* calculate for striped */ + + *orig_pos = pos - injected_before; + for (i = 0; i < strip_len; ++i) { + if (strip[i].offset_orig > pos) { + break; + } + *orig_pos += strip[i].size; + } + +done: + + if (G_UNLIKELY (*orig_pos >= filter->duration_orig)) { + *orig_pos = filter->duration_orig - 1; + } + + return ret; + +} + +static gboolean +gst_metadata_mux_checkgetrange (GstPad * srcpad) +{ + GstMetadataMux *filter = NULL; + + filter = GST_METADATA_MUX (GST_PAD_PARENT (srcpad)); + + return gst_pad_check_pull_range (filter->sinkpad); +} + +static GstFlowReturn +gst_metadata_mux_get_range (GstPad * pad, + guint64 offset, guint size, GstBuffer ** buf) +{ + GstMetadataMux *filter = NULL; + GstFlowReturn ret = GST_FLOW_OK; + gint64 offset_orig = 0; + guint size_orig; + GstBuffer *prepend = NULL; + gboolean need_append = FALSE; + + filter = GST_METADATA_MUX (GST_PAD_PARENT (pad)); + + if (filter->state != MT_STATE_MUXED) { + ret = GST_FLOW_ERROR; + goto done; + } + + if (offset + size > filter->duration) { + size = filter->duration - offset; + } + + size_orig = size; + + if (filter->need_send_tag) { + gst_metadata_mux_send_tags (filter); + } + + gst_metadata_mux_translate_pos_to_orig (filter, offset, &offset_orig, + &prepend); + + if (size > 1) { + gint64 pos; + + pos = offset + size - 1; + gst_metadata_mux_translate_pos_to_orig (filter, pos, &pos, NULL); + size_orig = pos + 1 - offset_orig; + } + + if (size_orig) { + + ret = gst_pad_pull_range (filter->sinkpad, offset_orig, size_orig, buf); + + if (ret == GST_FLOW_OK && *buf) { + gst_metadata_mux_strip_push_buffer (filter, offset_orig, &prepend, buf); + + if (GST_BUFFER_SIZE (*buf) < size) { + /* need append */ + need_append = TRUE; + } + + } + } else { + *buf = prepend; + } + +done: + + if (need_append) { + /* FIXME: together with SEEK and + * gst_metadata_parse_translate_pos_to_orig + * this way if chunk is added in the end we are in trolble + * ...still not implemented 'cause it will not be the + * case for the time being + */ + } + + return ret; + +} + +static gboolean +gst_metadata_mux_src_activate_pull (GstPad * pad, gboolean active) +{ + GstMetadataMux *filter = NULL; + gboolean ret; + + filter = GST_METADATA_MUX (gst_pad_get_parent (pad)); + + ret = gst_pad_activate_pull (filter->sinkpad, active); + + if (ret && filter->state == MT_STATE_NULL) { + ret = gst_metadata_mux_pull_range_mux (filter); + } + + gst_object_unref (filter); + + return ret; +} + + +static GstStateChangeReturn +gst_metadata_mux_change_state (GstElement * element, GstStateChange transition) +{ + GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; + GstMetadataMux *filter = GST_METADATA_MUX (element); + + switch (transition) { + case GST_STATE_CHANGE_NULL_TO_READY: + gst_metadata_mux_init_members (filter); + filter->adapter_parsing = gst_adapter_new (); + filter->taglist = gst_tag_list_new (); + metadata_init (&filter->mux_data); + break; + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); + if (ret == GST_STATE_CHANGE_FAILURE) + goto done; + + switch (transition) { + case GST_STATE_CHANGE_PAUSED_TO_READY: + filter->offset = 0; + filter->offset_orig = 0; + if (filter->adapter_parsing) { + gst_adapter_clear (filter->adapter_parsing); + } + if (filter->adapter_holding) { + gst_adapter_clear (filter->adapter_holding); + } + if (filter->state != MT_STATE_MUXED) { + /* cleanup parser */ + /* FIXME: could be improved a bit to avoid mem allocation */ + metadata_dispose (&filter->mux_data); + metadata_init (&filter->mux_data); + } + break; + case GST_STATE_CHANGE_READY_TO_NULL: + gst_metadata_mux_dispose_members (filter); + break; + default: + break; + } + +done: + + return ret; +} + +/* + * element plugin init function + */ + gboolean gst_metadata_mux_plugin_init (GstPlugin * plugin) { - /* exchange the strings 'plugin' and 'Template plugin' with your - * plugin name and description */ - GST_DEBUG_CATEGORY_INIT (gst_metadata_mux_debug, "metadatamux", - 0, "Metadata muxer"); + GST_DEBUG_CATEGORY_INIT (gst_metadata_mux_debug, "metadatamux", 0, + "Metadata demuxer"); return gst_element_register (plugin, "metadatamux", GST_RANK_NONE, GST_TYPE_METADATA_MUX); -- cgit v1.2.1