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rework id3tag plugin to work as a) parser - just strip id3 tags b) tag reader - extract tags and go EOS c) tag writer...

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Original commit message from CVS:
rework id3tag plugin to work as
a) parser - just strip id3 tags
b) tag reader - extract tags and go EOS
c) tag writer - change id3 tags
Included is some revamping to ease code to make it possible to strip id3tag from its mad dependency (without ID3v2 support), which would still make the parsing bits work. This is however not done yet.
This plugin supercedes the id3types plugin.
This commit is contained in:
Benjamin Otte 2003-12-09 16:33:52 +00:00
parent daa6a095a9
commit 33da588e1b
3 changed files with 332 additions and 165 deletions
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470
ext/mad/gstid3tag.c
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@ -26,6 +26,7 @@
#include <gst/gsttaginterface.h>
#include <string.h>
#define ID3_TYPE_FIND_SIZE 40960
GST_DEBUG_CATEGORY_STATIC (gst_id3_tag_debug);
#define GST_CAT_DEFAULT gst_id3_tag_debug
@ -47,17 +48,26 @@ typedef enum {
GST_ID3_TAG_STATE_NORMAL,
} GstID3TagState;
typedef enum {
GST_ID3_TAG_PARSE_UNKNOWN,
GST_ID3_TAG_PARSE_TAG,
GST_ID3_TAG_PARSE_WRITE,
GST_ID3_TAG_PARSE_PARSE
} GstID3ParseMode;
struct _GstID3Tag {
GstElement element;
GstElement element;
/* pads */
GstPad * sinkpad;
GstPad * srcpad;
/* caps */
gboolean parse_mode;
GstID3ParseMode parse_mode;
GstCaps * found_caps;
/* tags */
GstTagList * event_tags;
GstTagList * parsed_tags;
/* state */
@ -104,17 +114,9 @@ enum {
GST_PAD_TEMPLATE_FACTORY (id3_tag_src_template_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"id3_tag_data_src",
"application/x-id3",
NULL
),
GST_CAPS_NEW (
"id3_tag_tag_src",
"application/x-gst-tags",
NULL
)
/* FIXME: for spider - GST_PAD_ALWAYS, */
GST_PAD_SOMETIMES,
NULL
)
GST_PAD_TEMPLATE_FACTORY (id3_tag_sink_template_factory,
@ -228,7 +230,32 @@ gst_id3_tag_class_init (GstID3TagClass *klass)
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_id3_tag_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_id3_tag_get_property);
}
static GstCaps *
gst_id3_tag_get_caps (GstPad *pad, GstCaps *unused)
{
GstID3Tag *tag = GST_ID3_TAG (gst_pad_get_parent (pad));
if (tag->found_caps) {
GstCaps *caps = GST_CAPS_NEW ("gstid3tag", "application/x-gst-tags", NULL);
caps = gst_caps_append (caps, GST_CAPS_NEW ("gstid3tag", "application/x-id3", NULL));
caps = gst_caps_append (caps, gst_caps_copy (tag->found_caps));
return caps;
} else {
return GST_CAPS_ANY;
}
}
static void
gst_id3_tag_add_src_pad (GstID3Tag *tag)
{
tag->srcpad = gst_pad_new_from_template(
GST_PAD_TEMPLATE_GET (id3_tag_src_template_factory), "src");
gst_pad_set_event_function (tag->srcpad, GST_DEBUG_FUNCPTR (gst_id3_tag_src_event));
gst_pad_set_event_mask_function (tag->srcpad, GST_DEBUG_FUNCPTR (gst_id3_tag_get_event_masks));
gst_pad_set_query_function (tag->srcpad, GST_DEBUG_FUNCPTR (gst_id3_tag_src_query));
gst_pad_set_query_type_function (tag->srcpad, GST_DEBUG_FUNCPTR (gst_id3_tag_get_query_types));
gst_pad_set_getcaps_function (tag->srcpad, GST_DEBUG_FUNCPTR (gst_id3_tag_get_caps));
gst_element_add_pad (GST_ELEMENT (tag), tag->srcpad);
}
static void
gst_id3_tag_init (GstID3Tag *tag)
{
@ -238,16 +265,10 @@ gst_id3_tag_init (GstID3Tag *tag)
gst_element_add_pad (GST_ELEMENT (tag), tag->sinkpad);
gst_pad_set_chain_function (tag->sinkpad, GST_DEBUG_FUNCPTR (gst_id3_tag_chain));
tag->srcpad = gst_pad_new_from_template(
GST_PAD_TEMPLATE_GET (id3_tag_src_template_factory), "src");
gst_element_add_pad (GST_ELEMENT (tag), tag->srcpad);
gst_pad_set_event_function (tag->srcpad, GST_DEBUG_FUNCPTR (gst_id3_tag_src_event));
gst_pad_set_event_mask_function (tag->srcpad, GST_DEBUG_FUNCPTR (gst_id3_tag_get_event_masks));
gst_pad_set_query_function (tag->srcpad, GST_DEBUG_FUNCPTR (gst_id3_tag_src_query));
gst_pad_set_query_type_function (tag->srcpad, GST_DEBUG_FUNCPTR (gst_id3_tag_get_query_types));
/* FIXME: for the alli^H^H^H^Hspider - gst_id3_tag_add_src_pad (tag); */
tag->parsed_tags = NULL;
tag->state = GST_ID3_TAG_STATE_READING_V2_TAG;
tag->parse_mode = GST_ID3_TAG_PARSE_UNKNOWN;
tag->buffer = NULL;
GST_FLAG_SET (tag, GST_ELEMENT_EVENT_AWARE);
@ -262,8 +283,6 @@ gst_id3_tag_set_property (GObject *object, guint prop_id, const GValue *value, G
switch (prop_id) {
case ARG_V1_TAG:
tag->v1tag_render = g_value_get_boolean (value);
tag->v1tag_size_new = (tag->v1tag_render && (tag->parsed_tags != NULL ||
gst_tag_setter_get_list (GST_TAG_SETTER (tag)) != NULL)) ? 128 : 0;
g_object_notify (object, "v1-tag");
break;
case ARG_V2_TAG:
@ -300,6 +319,10 @@ gst_id3_tag_get_property (GObject *object, guint prop_id, GValue *value, GParamS
break;
}
}
#define gst_id3_tag_set_state(tag,new_state) G_STMT_START { \
GST_LOG_OBJECT (tag, "setting state to %s", #new_state ); \
tag->state = new_state; \
}G_STMT_END
static const GstEventMask*
gst_id3_tag_get_event_masks (GstPad *pad)
{
@ -338,7 +361,7 @@ gst_id3_tag_src_query (GstPad *pad, GstQueryType type,
tag->state == GST_ID3_TAG_STATE_NORMAL &&
gst_pad_query (GST_PAD_PEER (tag->sinkpad), GST_QUERY_TOTAL, format, value)) {
*value -= tag->v2tag_size + tag->v1tag_size;
*value += tag->v2tag_size_new + tag->v1tag_size;
*value += tag->v2tag_size_new + tag->v1tag_size_new;
res = TRUE;
}
break;
@ -542,6 +565,26 @@ gst_mad_tag_list_to_id3_tag (GstTagList *list)
gst_tag_list_foreach (list, tag_list_to_id3_tag_foreach, tag);
return tag;
}
static GstTagList *
gst_id3_tag_get_tag_to_render (GstID3Tag *tag)
{
GstTagList *ret = NULL;
if (tag->event_tags)
ret = gst_tag_list_copy (tag->event_tags);
if (ret) {
gst_tag_list_insert (ret, tag->parsed_tags, GST_TAG_MERGE_KEEP);
} else if (tag->parsed_tags) {
ret = gst_tag_list_copy (tag->parsed_tags);
}
if (ret) {
gst_tag_list_insert (ret, gst_tag_setter_get_list (GST_TAG_SETTER (tag)),
gst_tag_setter_get_merge_mode (GST_TAG_SETTER (tag)));
} else if (gst_tag_setter_get_list (GST_TAG_SETTER (tag))) {
ret = gst_tag_list_copy (gst_tag_setter_get_list (GST_TAG_SETTER (tag)));
}
return ret;
}
static void
gst_id3_tag_handle_event (GstPad *pad, GstEvent *event)
{
@ -550,23 +593,30 @@ gst_id3_tag_handle_event (GstPad *pad, GstEvent *event)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_DISCONTINUOUS:
switch (tag->state) {
case GST_ID3_TAG_STATE_READING_V2_TAG:
gst_element_error (GST_ELEMENT (tag), "Seek during ID3v2 tag reading");
case GST_ID3_TAG_STATE_READING_V2_TAG: {
guint64 value;
gst_event_discont_get_value (event, GST_FORMAT_BYTES, &value);
if (value != (tag->buffer ? GST_BUFFER_OFFSET (tag->buffer) + GST_BUFFER_SIZE (tag->buffer)
: 0))
gst_element_error (GST_ELEMENT (tag), "Seek during ID3v2 tag reading");
gst_data_unref (GST_DATA (event));
break;
}
case GST_ID3_TAG_STATE_SEEKING_TO_V1_TAG:
/* just assume it's the right seek for now */
tag->state = GST_ID3_TAG_STATE_READING_V1_TAG;
gst_id3_tag_set_state (tag, GST_ID3_TAG_STATE_READING_V1_TAG);
break;
case GST_ID3_TAG_STATE_READING_V1_TAG:
gst_element_error (GST_ELEMENT (tag), "Seek during ID3v1 tag reading");
gst_data_unref (GST_DATA (event));
break;
case GST_ID3_TAG_STATE_SEEKING_TO_NORMAL:
/* just assume it's the right seek for now */
tag->state = GST_ID3_TAG_STATE_NORMAL_START;
gst_id3_tag_set_state (tag, GST_ID3_TAG_STATE_NORMAL_START);
break;
case GST_ID3_TAG_STATE_NORMAL_START:
GST_ERROR_OBJECT (tag, "tag event loss, FIXME");
tag->state = GST_ID3_TAG_STATE_NORMAL;
GST_ERROR_OBJECT (tag, "tag event not sent, FIXME");
gst_id3_tag_set_state (tag, GST_ID3_TAG_STATE_NORMAL);
/* fall through */
case GST_ID3_TAG_STATE_NORMAL: {
gint64 value;
@ -587,7 +637,11 @@ gst_id3_tag_handle_event (GstPad *pad, GstEvent *event)
}
break;
case GST_EVENT_TAG:
gst_tag_list_insert (tag->parsed_tags, gst_event_tag_get_list (event), GST_TAG_MERGE_PREPEND);
if (tag->event_tags) {
gst_tag_list_insert (tag->event_tags, gst_event_tag_get_list (event), GST_TAG_MERGE_PREPEND);
} else {
tag->event_tags = gst_tag_list_copy (gst_event_tag_get_list (event));
}
gst_data_unref (GST_DATA (event));
break;
case GST_EVENT_EOS:
@ -596,8 +650,7 @@ gst_id3_tag_handle_event (GstPad *pad, GstEvent *event)
struct id3_tag *id3;
GST_LOG_OBJECT (tag, "rendering v1 tag after eos event");
merged = gst_tag_list_merge (gst_tag_setter_get_list (GST_TAG_SETTER (tag)), tag->parsed_tags,
gst_tag_setter_get_merge_mode (GST_TAG_SETTER (tag)));
merged = gst_id3_tag_get_tag_to_render (tag);
if (merged) {
id3 = gst_mad_tag_list_to_id3_tag (merged);
if (id3) {
@ -619,6 +672,129 @@ gst_id3_tag_handle_event (GstPad *pad, GstEvent *event)
}
return;
}
typedef struct {
guint best_probability;
GstCaps *caps;
GstBuffer *buffer;
} SimpleTypeFind;
guint8 *
simple_find_peek (gpointer data, gint64 offset, guint size)
{
SimpleTypeFind *find = (SimpleTypeFind *) data;
if (offset < 0)
return NULL;
if (GST_BUFFER_SIZE (find->buffer) >= offset + size) {
return GST_BUFFER_DATA (find->buffer) + offset;
}
return NULL;
}
static void
simple_find_suggest (gpointer data, guint probability, GstCaps *caps)
{
SimpleTypeFind *find = (SimpleTypeFind *) data;
if (probability > find->best_probability) {
gst_caps_replace (&find->caps, caps);
find->best_probability = probability;
}
}
static GstCaps *
gst_id3_tag_do_typefind (GstID3Tag *tag, GstBuffer *buffer)
{
GList *walk, *type_list;
SimpleTypeFind find;
GstTypeFind gst_find;
/* this will help us detecting the media stream type after
* this id3 thingy... Please note that this is a cruel hack
* for as long as spider doesn't support multi-type-finding.
*/
walk = type_list = gst_type_find_factory_get_list ();
find.buffer = buffer;
find.best_probability = 0;
find.caps = NULL;
gst_find.data = &find;
gst_find.peek = simple_find_peek;
gst_find.suggest = simple_find_suggest;
while (walk) {
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (walk->data);
gst_type_find_factory_call_function (factory, &gst_find);
if (find.best_probability >= GST_TYPE_FIND_MAXIMUM)
break;
walk = g_list_next (walk);
}
g_list_free (type_list);
if (find.best_probability > 0) {
return find.caps;
} else {
gst_element_error (GST_ELEMENT (tag), "no caps found");
return NULL;
}
}
static gboolean
gst_id3_tag_do_caps_nego (GstID3Tag *tag, GstBuffer *buffer)
{
GstCaps *caps;
if (buffer != NULL) {
g_assert (tag->found_caps == NULL);
tag->found_caps = gst_id3_tag_do_typefind (tag, buffer);
if (!tag->found_caps) {
return FALSE;
}
}
if (!tag->srcpad)
gst_id3_tag_add_src_pad (tag);
do {
caps = GST_CAPS_NEW ("id3_tag_data_src", "application/x-id3", NULL);
if (gst_pad_try_set_caps (tag->srcpad, caps) != GST_PAD_LINK_REFUSED) {
tag->parse_mode = GST_ID3_TAG_PARSE_WRITE;
GST_LOG_OBJECT (tag, "normal operation, using application/x-id3 output");
} else {
caps = GST_CAPS_NEW ("id3_tag_tag_src", "application/x-gst-tags", NULL);
if (gst_pad_try_set_caps (tag->srcpad, caps) != GST_PAD_LINK_REFUSED) {
tag->parse_mode = GST_ID3_TAG_PARSE_TAG;
GST_LOG_OBJECT (tag, "fast operation, just outputting tags");
} else {
g_assert (tag->found_caps);
if (gst_pad_try_set_caps (tag->srcpad, tag->found_caps) != GST_PAD_LINK_REFUSED) {
tag->parse_mode = GST_ID3_TAG_PARSE_PARSE;
GST_LOG_OBJECT (tag, "parsing operation, extracting tags");
} else {
caps = GST_CAPS_NEW ("id3_tag_data_src", "application/x-id3", NULL);
caps = gst_caps_append (caps,
GST_CAPS_NEW ("id3_tag_tag_src", "application/x-gst-tags", NULL));
caps = gst_caps_append (caps, tag->found_caps);
if (gst_pad_recover_caps_error (tag->srcpad, caps)) {
tag->parse_mode = GST_ID3_TAG_PARSE_UNKNOWN;
continue;
} else {
return FALSE;
}
}
}
}
} while (FALSE);
return TRUE;
}
static void
gst_id3_tag_send_tag_event (GstID3Tag *tag)
{
/* FIXME: what's the correct merge mode? Docs need to tell... */
GstTagList *merged = gst_tag_list_merge (tag->event_tags, tag->parsed_tags, GST_TAG_MERGE_KEEP);
if (merged) {
gst_element_found_tags_for_pad (GST_ELEMENT (tag), tag->srcpad, 0,
merged);
}
}
static void
gst_id3_tag_chain (GstPad *pad, GstData *data)
{
@ -635,78 +811,6 @@ gst_id3_tag_chain (GstPad *pad, GstData *data)
tag = GST_ID3_TAG (gst_pad_get_parent (pad));
switch (tag->state) {
case GST_ID3_TAG_STATE_READING_V2_TAG:
if (tag->buffer) {
tag->buffer = gst_buffer_merge (tag->buffer, buffer);
} else {
GstCaps *caps;
/* do caps nego */
capsnego:
caps = GST_CAPS_NEW ("id3_tag_data_src", "application/x-id3", NULL);
if (gst_pad_try_set_caps (tag->srcpad, caps) != GST_PAD_LINK_REFUSED) {
tag->parse_mode = FALSE;
GST_LOG_OBJECT (tag, "normal operation, using application/x-id3 output");
} else {
if (gst_pad_try_set_caps (tag->srcpad,
GST_CAPS_NEW ("id3_tag_tag_src", "application/x-gst-tags", NULL))
!= GST_PAD_LINK_REFUSED) {
tag->parse_mode = TRUE;
GST_LOG_OBJECT (tag, "fast operation, just outputting tags");
} else {
GstCaps *caps = gst_pad_template_get_caps (GST_PAD_TEMPLATE_GET (id3_tag_src_template_factory));
if (gst_pad_recover_caps_error (tag->srcpad, caps)) {
goto capsnego;
} else {
return;
}
}
}
/* done caps nego */
tag->buffer = buffer;
}
if (GST_BUFFER_SIZE (tag->buffer) < 10)
return;
if (tag->v2tag_size == 0) {
tag->v2tag_size = id3_tag_query (GST_BUFFER_DATA (tag->buffer),
GST_BUFFER_SIZE (tag->buffer));
/* no footers supported */
if (tag->v2tag_size < 0)
tag->v2tag_size = 0;
}
if (tag->v2tag_size != 0) {
if (GST_BUFFER_SIZE (tag->buffer) > tag->v2tag_size) {
struct id3_tag *v2tag;
v2tag = id3_tag_parse (GST_BUFFER_DATA (tag->buffer),
GST_BUFFER_SIZE (tag->buffer));
if (v2tag) {
g_assert (tag->parsed_tags == NULL);
tag->parsed_tags = gst_mad_id3_to_tag_list (v2tag);
id3_tag_delete (v2tag);
} else {
GST_WARNING_OBJECT (tag, "detected ID3v2 tag, but couldn't parse it");
tag->v2tag_size = 0;
}
} else {
return;
}
}
/* seek to ID3v1 tag */
if (gst_pad_send_event (GST_PAD_PEER (tag->sinkpad),
gst_event_new_seek (GST_FORMAT_BYTES | GST_SEEK_METHOD_END |
GST_SEEK_FLAG_FLUSH, -128))) {
tag->state = GST_ID3_TAG_STATE_SEEKING_TO_V1_TAG;
} else {
GstBuffer *sub;
tag->state = GST_ID3_TAG_STATE_NORMAL_START;
sub = gst_buffer_create_sub (tag->buffer, tag->v2tag_size,
GST_BUFFER_SIZE (tag->buffer) - tag->v2tag_size);
gst_pad_push (tag->srcpad, GST_DATA (sub));
}
gst_data_unref (GST_DATA (tag->buffer));
tag->buffer = NULL;
return;
case GST_ID3_TAG_STATE_SEEKING_TO_V1_TAG:
case GST_ID3_TAG_STATE_SEEKING_TO_NORMAL:
/* we're waiting for the seek to finish, just discard all the stuff */
@ -715,6 +819,7 @@ capsnego:
case GST_ID3_TAG_STATE_READING_V1_TAG:
if (tag->buffer) {
tag->buffer = gst_buffer_merge (tag->buffer, buffer);
gst_data_unref (GST_DATA (buffer));
} else {
tag->buffer = buffer;
tag->v1tag_offset = buffer->offset;
@ -729,12 +834,14 @@ capsnego:
v1tag = id3_tag_parse (GST_BUFFER_DATA (tag->buffer),
GST_BUFFER_SIZE (tag->buffer));
GST_LOG_OBJECT (tag, "have read ID3v1 tag");
if (v1tag) {
GstTagList *newtag;
newtag = gst_mad_id3_to_tag_list (v1tag);
id3_tag_delete (v1tag);
if (tag->parsed_tags) {
/* FIXME: use append/prepend here ? */
gst_tag_list_insert (tag->parsed_tags, newtag,
tag->prefer_v1tag ? GST_TAG_MERGE_REPLACE : GST_TAG_MERGE_KEEP);
gst_tag_list_free (newtag);
@ -748,70 +855,119 @@ capsnego:
} else if (tag->v1tag_size != 0) {
GST_WARNING_OBJECT (tag, "bad non-ID3v1 tag at end of file");
tag->v1tag_size = 0;
} else {
GST_LOG_OBJECT (tag, "no ID3v1 tag (%"G_GUINT64_FORMAT")", GST_BUFFER_OFFSET (tag->buffer));
}
gst_data_unref (GST_DATA (tag->buffer));
tag->buffer = NULL;
if (!tag->parse_mode) {
if (tag->parse_mode != GST_ID3_TAG_PARSE_TAG) {
/* seek to beginning */
GST_LOG_OBJECT (tag, "seeking back to beginning");
if (gst_pad_send_event (GST_PAD_PEER (tag->sinkpad),
gst_event_new_seek (GST_FORMAT_BYTES | GST_SEEK_METHOD_SET |
GST_SEEK_FLAG_FLUSH, tag->v2tag_size))) {
tag->state = GST_ID3_TAG_STATE_SEEKING_TO_NORMAL;
gst_id3_tag_set_state (tag, GST_ID3_TAG_STATE_SEEKING_TO_NORMAL);
} else {
gst_element_error (GST_ELEMENT (tag), "can't seek back to beginning from reading ID3v1 tag");
}
} else {
if (tag->parsed_tags)
gst_element_found_tags_for_pad (GST_ELEMENT (tag), tag->srcpad, 0,
gst_tag_list_copy (tag->parsed_tags));
gst_id3_tag_send_tag_event (tag);
/* set eos, we're done parsing tags */
GST_LOG_OBJECT (tag, "setting EOS after reading ID3v1 tag");
tag->state = GST_ID3_TAG_STATE_NORMAL;
gst_id3_tag_set_state (tag, GST_ID3_TAG_STATE_NORMAL);
gst_element_set_eos (GST_ELEMENT (tag));
gst_pad_push (tag->srcpad, GST_DATA (gst_event_new (GST_EVENT_EOS)));
}
return;
case GST_ID3_TAG_STATE_NORMAL_START:
if (tag->parse_mode) {
if (tag->parsed_tags)
gst_element_found_tags_for_pad (GST_ELEMENT (tag), tag->srcpad, 0,
gst_tag_list_copy (tag->parsed_tags));
case GST_ID3_TAG_STATE_READING_V2_TAG:
if (tag->buffer) {
tag->buffer = gst_buffer_merge (tag->buffer, buffer);
gst_data_unref (GST_DATA (buffer));
} else {
tag->buffer = buffer;
}
if (GST_BUFFER_SIZE (tag->buffer) < 10)
return;
if (tag->v2tag_size == 0) {
tag->v2tag_size = id3_tag_query (GST_BUFFER_DATA (tag->buffer),
GST_BUFFER_SIZE (tag->buffer));
/* no footers supported */
if (tag->v2tag_size < 0)
tag->v2tag_size = 0;
}
if (GST_BUFFER_SIZE (tag->buffer) < tag->v2tag_size + ID3_TYPE_FIND_SIZE)
return;
if (tag->v2tag_size != 0) {
struct id3_tag *v2tag;
v2tag = id3_tag_parse (GST_BUFFER_DATA (tag->buffer),
GST_BUFFER_SIZE (tag->buffer));
if (v2tag) {
GstTagList *list;
list = gst_mad_id3_to_tag_list (v2tag);
id3_tag_delete (v2tag);
GST_LOG_OBJECT (tag, "parsed ID3v2 tag");
/* no other tag parsed yet */
g_assert (tag->parsed_tags == NULL);
tag->parsed_tags = list;
} else {
GST_WARNING_OBJECT (tag, "detected ID3v2 tag, but couldn't parse it");
tag->v2tag_size = 0;
}
}
/* caps nego and typefinding */
buffer = gst_buffer_create_sub (tag->buffer, tag->v2tag_size,
GST_BUFFER_SIZE (tag->buffer) - tag->v2tag_size);
gst_data_unref (GST_DATA (tag->buffer));
tag->buffer = NULL;
if (!gst_id3_tag_do_caps_nego (tag, buffer))
return;
/* seek to ID3v1 tag */
if (gst_pad_send_event (GST_PAD_PEER (tag->sinkpad),
gst_event_new_seek (GST_FORMAT_BYTES | GST_SEEK_METHOD_END |
GST_SEEK_FLAG_FLUSH, -128))) {
gst_id3_tag_set_state (tag, GST_ID3_TAG_STATE_SEEKING_TO_V1_TAG);
gst_data_unref (GST_DATA (buffer));
return;
}
gst_id3_tag_set_state (tag, GST_ID3_TAG_STATE_NORMAL_START);
/* fall through */
case GST_ID3_TAG_STATE_NORMAL_START:
g_assert (tag->buffer == NULL);
gst_id3_tag_send_tag_event (tag);
if (tag->parse_mode == GST_ID3_TAG_PARSE_WRITE &&
tag->v2tag_render) {
struct id3_tag *id3;
GstTagList *merged;
GstBuffer *tag_buffer;
/* send event */
if (tag->parsed_tags)
gst_element_found_tags (GST_ELEMENT (tag), tag->parsed_tags);
/* render tag */
tag->v2tag_size_new = 0;
if (tag->v2tag_render) {
merged = gst_tag_list_merge (gst_tag_setter_get_list (GST_TAG_SETTER (tag)), tag->parsed_tags,
gst_tag_setter_get_merge_mode (GST_TAG_SETTER (tag)));
if (merged) {
id3 = gst_mad_tag_list_to_id3_tag (merged);
if (id3) {
glong estimated;
estimated = id3_tag_render (id3, NULL);
tag_buffer = gst_buffer_new_and_alloc (estimated);
tag->v2tag_size_new = id3_tag_render (id3, GST_BUFFER_DATA (tag_buffer));
g_assert (estimated >= tag->v2tag_size_new);
GST_BUFFER_SIZE (tag_buffer) = tag->v2tag_size_new;
gst_pad_push (tag->srcpad, GST_DATA (tag_buffer));
id3_tag_delete (id3);
}
gst_tag_list_free (merged);
merged = gst_id3_tag_get_tag_to_render (tag);
if (merged) {
id3 = gst_mad_tag_list_to_id3_tag (merged);
if (id3) {
glong estimated;
estimated = id3_tag_render (id3, NULL);
tag_buffer = gst_buffer_new_and_alloc (estimated);
tag->v2tag_size_new = id3_tag_render (id3, GST_BUFFER_DATA (tag_buffer));
g_assert (estimated >= tag->v2tag_size_new);
GST_BUFFER_SIZE (tag_buffer) = tag->v2tag_size_new;
gst_pad_push (tag->srcpad, GST_DATA (tag_buffer));
id3_tag_delete (id3);
}
gst_tag_list_free (merged);
}
}
gst_id3_tag_set_state (tag, GST_ID3_TAG_STATE_NORMAL);
tag->v1tag_size_new = (tag->v1tag_render &&
tag->parse_mode == GST_ID3_TAG_PARSE_WRITE &&
(tag->parsed_tags != NULL ||
gst_tag_setter_get_list (GST_TAG_SETTER (tag)) != NULL)) ? 128 : 0;
/* fall through */
tag->state = GST_ID3_TAG_STATE_NORMAL;
tag->v1tag_size_new = (tag->v1tag_render && (tag->parsed_tags != NULL ||
gst_tag_setter_get_list (GST_TAG_SETTER (tag)) != NULL)) ? 128 : 0;
case GST_ID3_TAG_STATE_NORMAL:
if (tag->parse_mode) {
if (tag->parse_mode == GST_ID3_TAG_PARSE_TAG) {
gst_element_set_eos (GST_ELEMENT (tag));
gst_pad_push (tag->srcpad, GST_DATA (gst_event_new (GST_EVENT_EOS)));
} else {
@ -858,10 +1014,19 @@ gst_id3_tag_change_state (GstElement *element)
gst_tag_list_free (tag->parsed_tags);
tag->parsed_tags = NULL;
}
if (tag->event_tags) {
gst_tag_list_free (tag->event_tags);
tag->event_tags = NULL;
}
if (tag->buffer) {
gst_data_unref (GST_DATA (tag->buffer));
tag->buffer = NULL;
}
if (tag->found_caps) {
gst_caps_unref (tag->found_caps);
tag->found_caps = NULL;
}
tag->parse_mode = GST_ID3_TAG_PARSE_UNKNOWN;
break;
case GST_STATE_READY_TO_NULL:
break;
@ -869,3 +1034,30 @@ gst_id3_tag_change_state (GstElement *element)
return parent_class->change_state (element);
}
/*** PLUGIN INITIALIZATION ****************************************************/
static gboolean
plugin_init (GstPlugin *plugin)
{
if (!gst_library_load ("gsttags"))
return FALSE;
if (!gst_element_register (plugin, "mad", GST_RANK_PRIMARY, gst_mad_get_type ()) ||
!gst_element_register (plugin, "id3tag", GST_RANK_PRIMARY, gst_id3_tag_get_type ()))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"mad",
"id3 tag manipulation and mp3 decoding based on the mad library",
plugin_init,
VERSION,
"GPL",
GST_PACKAGE,
GST_ORIGIN
)

26
ext/mad/gstmad.c
View file

@ -1238,29 +1238,3 @@ gst_mad_change_state (GstElement *element)
return parent_class->change_state (element);
}
static gboolean
plugin_init (GstPlugin *plugin)
{
/* we need the gsttags plugin for metadata querying */
if (!gst_plugin_load ("gsttags"))
return FALSE;
/* create an elementfactory for the mad element */
if (!gst_element_register (plugin, "mad", GST_RANK_PRIMARY, GST_TYPE_MAD) ||
!gst_element_register (plugin, "id3tag", GST_RANK_PRIMARY, gst_id3_tag_get_type ()))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"mad",
"mp3 decoding and tag editing based on the mad library",
plugin_init,
VERSION,
"GPL",
GST_PACKAGE,
GST_ORIGIN
)

1
ext/mad/gstmad.h
View file

@ -30,6 +30,7 @@ G_BEGIN_DECLS
GType gst_mad_get_type (void);
GType gst_id3_parse_get_type (void);
GType gst_id3_tag_get_type (void);
GstTagList* gst_mad_id3_to_tag_list (const struct id3_tag * tag);