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taglib: port to GstTagMux base class

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This commit is contained in:
Tim-Philipp Müller 2012-02-12 16:22:21 +00:00
parent 5b25f3737b
commit 736f68e1e6
8 changed files with 103 additions and 511 deletions
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4
ext/taglib/Makefile.am
View file

@ -1,6 +1,6 @@
plugin_LTLIBRARIES = libgsttaglib.la plugin_LTLIBRARIES = libgsttaglib.la
libgsttaglib_la_SOURCES = gsttaglibmux.c gstid3v2mux.cc gstapev2mux.cc libgsttaglib_la_SOURCES = gsttaglibplugin.c gstid3v2mux.cc gstapev2mux.cc
libgsttaglib_la_CFLAGS = \ libgsttaglib_la_CFLAGS = \
$(GST_PLUGINS_BASE_CFLAGS) \ $(GST_PLUGINS_BASE_CFLAGS) \
$(GST_CFLAGS) \ $(GST_CFLAGS) \
@ -16,4 +16,4 @@ libgsttaglib_la_LIBADD = \
libgsttaglib_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) libgsttaglib_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgsttaglib_la_LIBTOOLFLAGS = --tag=disable-static libgsttaglib_la_LIBTOOLFLAGS = --tag=disable-static
noinst_HEADERS = gsttaglibmux.h gstid3v2mux.h gstapev2mux.h noinst_HEADERS = gstid3v2mux.h gstapev2mux.h

38
ext/taglib/gstapev2mux.cc
View file

@ -64,17 +64,25 @@ static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_ALWAYS, GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-apetag")); GST_STATIC_CAPS ("application/x-apetag"));
GST_BOILERPLATE (GstApev2Mux, gst_apev2_mux, GstTagLibMux, static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_TYPE_TAG_LIB_MUX); GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY"));
static GstBuffer *gst_apev2_mux_render_tag (GstTagLibMux * mux, GST_BOILERPLATE (GstApev2Mux, gst_apev2_mux, GstTagMux,
GstTagList * taglist); GST_TYPE_TAG_MUX);
static GstBuffer *gst_apev2_mux_render_tag (GstTagMux * mux,
const GstTagList * taglist);
static GstBuffer *gst_apev2_mux_render_end_tag (GstTagMux * mux,
const GstTagList * taglist);
static void static void
gst_apev2_mux_base_init (gpointer g_class) gst_apev2_mux_base_init (gpointer g_class)
{ {
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_static_pad_template (element_class, &sink_template);
gst_element_class_add_static_pad_template (element_class, &src_template); gst_element_class_add_static_pad_template (element_class, &src_template);
gst_element_class_set_details_simple (element_class, gst_element_class_set_details_simple (element_class,
@ -89,8 +97,10 @@ gst_apev2_mux_base_init (gpointer g_class)
static void static void
gst_apev2_mux_class_init (GstApev2MuxClass * klass) gst_apev2_mux_class_init (GstApev2MuxClass * klass)
{ {
GST_TAG_LIB_MUX_CLASS (klass)->render_tag = GST_TAG_MUX_CLASS (klass)->render_start_tag =
GST_DEBUG_FUNCPTR (gst_apev2_mux_render_tag); GST_DEBUG_FUNCPTR (gst_apev2_mux_render_tag);
GST_TAG_MUX_CLASS (klass)->render_end_tag =
GST_DEBUG_FUNCPTR (gst_apev2_mux_render_end_tag);
} }
static void static void
@ -339,11 +349,12 @@ add_one_tag (const GstTagList * list, const gchar * tag, gpointer user_data)
} }
static GstBuffer * static GstBuffer *
gst_apev2_mux_render_tag (GstTagLibMux * mux, GstTagList * taglist) gst_apev2_mux_render_tag (GstTagMux * mux, const GstTagList * taglist)
{ {
APE::Tag apev2tag; APE::Tag apev2tag;
ByteVector rendered_tag; ByteVector rendered_tag;
GstBuffer *buf; GstBuffer *buf;
GstCaps *caps;
guint tag_size; guint tag_size;
/* Render the tag */ /* Render the tag */
@ -357,17 +368,16 @@ gst_apev2_mux_render_tag (GstTagLibMux * mux, GstTagList * taglist)
/* Create buffer with tag */ /* Create buffer with tag */
buf = gst_buffer_new_and_alloc (tag_size); buf = gst_buffer_new_and_alloc (tag_size);
memcpy (GST_BUFFER_DATA (buf), rendered_tag.data (), tag_size); memcpy (GST_BUFFER_DATA (buf), rendered_tag.data (), tag_size);
gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
caps = gst_static_pad_template_get_caps (&src_template);
gst_buffer_set_caps (buf, caps);
gst_caps_unref (caps);
return buf; return buf;
} }
gboolean static GstBuffer *
gst_apev2_mux_plugin_init (GstPlugin * plugin) gst_apev2_mux_render_end_tag (GstTagMux * mux, const GstTagList * taglist)
{ {
if (!gst_element_register (plugin, "apev2mux", GST_RANK_NONE, return NULL;
GST_TYPE_APEV2_MUX))
return FALSE;
return TRUE;
} }

6
ext/taglib/gstapev2mux.h
View file

@ -22,7 +22,7 @@
#ifndef GST_APEV2_MUX_H #ifndef GST_APEV2_MUX_H
#define GST_APEV2_MUX_H #define GST_APEV2_MUX_H
#include "gsttaglibmux.h" #include <gst/tag/gsttagmux.h>
G_BEGIN_DECLS G_BEGIN_DECLS
@ -30,11 +30,11 @@ typedef struct _GstApev2Mux GstApev2Mux;
typedef struct _GstApev2MuxClass GstApev2MuxClass; typedef struct _GstApev2MuxClass GstApev2MuxClass;
struct _GstApev2Mux { struct _GstApev2Mux {
GstTagLibMux taglibmux; GstTagMux tagmux;
}; };
struct _GstApev2MuxClass { struct _GstApev2MuxClass {
GstTagLibMuxClass taglibmux_class; GstTagMuxClass tagmux_class;
}; };
#define GST_TYPE_APEV2_MUX \ #define GST_TYPE_APEV2_MUX \

38
ext/taglib/gstid3v2mux.cc
View file

@ -72,18 +72,24 @@ static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_ALWAYS, GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-id3")); GST_STATIC_CAPS ("application/x-id3"));
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY"));
GST_BOILERPLATE (GstId3v2Mux, gst_id3v2_mux, GstTagLibMux, GST_BOILERPLATE (GstId3v2Mux, gst_id3v2_mux, GstTagMux, GST_TYPE_TAG_MUX);
GST_TYPE_TAG_LIB_MUX);
static GstBuffer *gst_id3v2_mux_render_tag (GstTagLibMux * mux, static GstBuffer *gst_id3v2_mux_render_tag (GstTagMux * mux,
GstTagList * taglist); const GstTagList * taglist);
static GstBuffer *gst_id3v2_mux_render_end_tag (GstTagMux * mux,
const GstTagList * taglist);
static void static void
gst_id3v2_mux_base_init (gpointer g_class) gst_id3v2_mux_base_init (gpointer g_class)
{ {
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_static_pad_template (element_class, &sink_template);
gst_element_class_add_static_pad_template (element_class, &src_template); gst_element_class_add_static_pad_template (element_class, &src_template);
gst_element_class_set_details_simple (element_class, gst_element_class_set_details_simple (element_class,
@ -98,8 +104,10 @@ gst_id3v2_mux_base_init (gpointer g_class)
static void static void
gst_id3v2_mux_class_init (GstId3v2MuxClass * klass) gst_id3v2_mux_class_init (GstId3v2MuxClass * klass)
{ {
GST_TAG_LIB_MUX_CLASS (klass)->render_tag = GST_TAG_MUX_CLASS (klass)->render_start_tag =
GST_DEBUG_FUNCPTR (gst_id3v2_mux_render_tag); GST_DEBUG_FUNCPTR (gst_id3v2_mux_render_tag);
GST_TAG_MUX_CLASS (klass)->render_end_tag =
GST_DEBUG_FUNCPTR (gst_id3v2_mux_render_end_tag);
} }
static void static void
@ -723,11 +731,12 @@ foreach_add_tag (const GstTagList * list, const gchar * tag, gpointer userdata)
} }
static GstBuffer * static GstBuffer *
gst_id3v2_mux_render_tag (GstTagLibMux * mux, GstTagList * taglist) gst_id3v2_mux_render_tag (GstTagMux * mux, const GstTagList * taglist)
{ {
ID3v2::Tag id3v2tag; ID3v2::Tag id3v2tag;
ByteVector rendered_tag; ByteVector rendered_tag;
GstBuffer *buf; GstBuffer *buf;
GstCaps *caps;
guint tag_size; guint tag_size;
/* write all strings as UTF-8 by default */ /* write all strings as UTF-8 by default */
@ -757,19 +766,16 @@ gst_id3v2_mux_render_tag (GstTagLibMux * mux, GstTagList * taglist)
/* Create buffer with tag */ /* Create buffer with tag */
buf = gst_buffer_new_and_alloc (tag_size); buf = gst_buffer_new_and_alloc (tag_size);
memcpy (GST_BUFFER_DATA (buf), rendered_tag.data (), tag_size); memcpy (GST_BUFFER_DATA (buf), rendered_tag.data (), tag_size);
gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
caps = gst_static_pad_template_get_caps (&src_template);
gst_buffer_set_caps (buf, caps);
gst_caps_unref (caps);
return buf; return buf;
} }
gboolean static GstBuffer *
gst_id3v2_mux_plugin_init (GstPlugin * plugin) gst_id3v2_mux_render_end_tag (GstTagMux * mux, const GstTagList * taglist)
{ {
if (!gst_element_register (plugin, "id3v2mux", GST_RANK_NONE, return NULL;
GST_TYPE_ID3V2_MUX))
return FALSE;
gst_tag_register_musicbrainz_tags ();
return TRUE;
} }

6
ext/taglib/gstid3v2mux.h
View file

@ -21,7 +21,7 @@
#ifndef GST_ID3V2_MUX_H #ifndef GST_ID3V2_MUX_H
#define GST_ID3V2_MUX_H #define GST_ID3V2_MUX_H
#include "gsttaglibmux.h" #include <gst/tag/gsttagmux.h>
G_BEGIN_DECLS G_BEGIN_DECLS
@ -29,11 +29,11 @@ typedef struct _GstId3v2Mux GstId3v2Mux;
typedef struct _GstId3v2MuxClass GstId3v2MuxClass; typedef struct _GstId3v2MuxClass GstId3v2MuxClass;
struct _GstId3v2Mux { struct _GstId3v2Mux {
GstTagLibMux taglibmux; GstTagMux tagmux;
}; };
struct _GstId3v2MuxClass { struct _GstId3v2MuxClass {
GstTagLibMuxClass taglibmux_class; GstTagMuxClass tagmux_class;
}; };
#define GST_TYPE_ID3V2_MUX \ #define GST_TYPE_ID3V2_MUX \

402
ext/taglib/gsttaglibmux.c
View file

@ -1,402 +0,0 @@
/* GStreamer taglib-based muxer base class
* Copyright (C) 2006 Christophe Fergeau <teuf@gnome.org>
* Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
* Copyright (C) 2006 Sebastian Dröge <slomo@circular-chaos.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <gst/gsttagsetter.h>
#include <gst/tag/tag.h>
#include "gsttaglibmux.h"
GST_DEBUG_CATEGORY_STATIC (gst_tag_lib_mux_debug);
#define GST_CAT_DEFAULT gst_tag_lib_mux_debug
static GstStaticPadTemplate gst_tag_lib_mux_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY"));
static void
gst_tag_lib_mux_iface_init (GType taglib_type)
{
static const GInterfaceInfo tag_setter_info = {
NULL,
NULL,
NULL
};
g_type_add_interface_static (taglib_type, GST_TYPE_TAG_SETTER,
&tag_setter_info);
}
GST_BOILERPLATE_FULL (GstTagLibMux, gst_tag_lib_mux,
GstElement, GST_TYPE_ELEMENT, gst_tag_lib_mux_iface_init);
static GstStateChangeReturn
gst_tag_lib_mux_change_state (GstElement * element, GstStateChange transition);
static GstFlowReturn gst_tag_lib_mux_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_tag_lib_mux_sink_event (GstPad * pad, GstEvent * event);
static void
gst_tag_lib_mux_finalize (GObject * obj)
{
GstTagLibMux *mux = GST_TAG_LIB_MUX (obj);
if (mux->newsegment_ev) {
gst_event_unref (mux->newsegment_ev);
mux->newsegment_ev = NULL;
}
if (mux->event_tags) {
gst_tag_list_free (mux->event_tags);
mux->event_tags = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_tag_lib_mux_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_static_pad_template (element_class,
&gst_tag_lib_mux_sink_template);
GST_DEBUG_CATEGORY_INIT (gst_tag_lib_mux_debug, "taglibmux", 0,
"taglib-based muxer");
}
static void
gst_tag_lib_mux_class_init (GstTagLibMuxClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->finalize = gst_tag_lib_mux_finalize;
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_tag_lib_mux_change_state);
}
static void
gst_tag_lib_mux_init (GstTagLibMux * mux, GstTagLibMuxClass * mux_class)
{
GstElementClass *element_klass = GST_ELEMENT_CLASS (mux_class);
GstPadTemplate *tmpl;
/* pad through which data comes in to the element */
mux->sinkpad =
gst_pad_new_from_static_template (&gst_tag_lib_mux_sink_template, "sink");
gst_pad_set_chain_function (mux->sinkpad,
GST_DEBUG_FUNCPTR (gst_tag_lib_mux_chain));
gst_pad_set_event_function (mux->sinkpad,
GST_DEBUG_FUNCPTR (gst_tag_lib_mux_sink_event));
gst_element_add_pad (GST_ELEMENT (mux), mux->sinkpad);
/* pad through which data goes out of the element */
tmpl = gst_element_class_get_pad_template (element_klass, "src");
if (tmpl) {
mux->srcpad = gst_pad_new_from_template (tmpl, "src");
gst_pad_use_fixed_caps (mux->srcpad);
gst_pad_set_caps (mux->srcpad, gst_pad_template_get_caps (tmpl));
gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
}
mux->render_tag = TRUE;
}
static GstBuffer *
gst_tag_lib_mux_render_tag (GstTagLibMux * mux)
{
GstTagLibMuxClass *klass;
GstTagMergeMode merge_mode;
GstTagSetter *tagsetter;
GstBuffer *buffer;
const GstTagList *tagsetter_tags;
GstTagList *taglist;
GstEvent *event;
tagsetter = GST_TAG_SETTER (mux);
tagsetter_tags = gst_tag_setter_get_tag_list (tagsetter);
merge_mode = gst_tag_setter_get_tag_merge_mode (tagsetter);
GST_LOG_OBJECT (mux, "merging tags, merge mode = %d", merge_mode);
GST_LOG_OBJECT (mux, "event tags: %" GST_PTR_FORMAT, mux->event_tags);
GST_LOG_OBJECT (mux, "set tags: %" GST_PTR_FORMAT, tagsetter_tags);
taglist = gst_tag_list_merge (tagsetter_tags, mux->event_tags, merge_mode);
GST_LOG_OBJECT (mux, "final tags: %" GST_PTR_FORMAT, taglist);
klass = GST_TAG_LIB_MUX_CLASS (G_OBJECT_GET_CLASS (mux));
if (klass->render_tag == NULL)
goto no_vfunc;
buffer = klass->render_tag (mux, taglist);
if (buffer == NULL)
goto render_error;
mux->tag_size = GST_BUFFER_SIZE (buffer);
GST_LOG_OBJECT (mux, "tag size = %" G_GSIZE_FORMAT " bytes", mux->tag_size);
/* Send newsegment event from byte position 0, so the tag really gets
* written to the start of the file, independent of the upstream segment */
gst_pad_push_event (mux->srcpad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0));
/* Send an event about the new tags to downstream elements */
/* gst_event_new_tag takes ownership of the list, so no need to unref it */
event = gst_event_new_tag (taglist);
gst_pad_push_event (mux->srcpad, event);
GST_BUFFER_OFFSET (buffer) = 0;
return buffer;
no_vfunc:
{
GST_ERROR_OBJECT (mux, "Subclass does not implement render_tag vfunc!");
gst_tag_list_free (taglist);
return NULL;
}
render_error:
{
GST_ERROR_OBJECT (mux, "Failed to render tag");
gst_tag_list_free (taglist);
return NULL;
}
}
static GstEvent *
gst_tag_lib_mux_adjust_event_offsets (GstTagLibMux * mux,
const GstEvent * newsegment_event)
{
GstFormat format;
gint64 start, stop, cur;
gst_event_parse_new_segment ((GstEvent *) newsegment_event, NULL, NULL,
&format, &start, &stop, &cur);
g_assert (format == GST_FORMAT_BYTES);
if (start != -1)
start += mux->tag_size;
if (stop != -1)
stop += mux->tag_size;
if (cur != -1)
cur += mux->tag_size;
GST_DEBUG_OBJECT (mux, "adjusting newsegment event offsets to start=%"
G_GINT64_FORMAT ", stop=%" G_GINT64_FORMAT ", cur=%" G_GINT64_FORMAT
" (delta = +%" G_GSIZE_FORMAT ")", start, stop, cur, mux->tag_size);
return gst_event_new_new_segment (TRUE, 1.0, format, start, stop, cur);
}
static GstFlowReturn
gst_tag_lib_mux_chain (GstPad * pad, GstBuffer * buffer)
{
GstTagLibMux *mux = GST_TAG_LIB_MUX (GST_OBJECT_PARENT (pad));
if (mux->render_tag) {
GstFlowReturn ret;
GstBuffer *tag_buffer;
GST_INFO_OBJECT (mux, "Adding tags to stream");
tag_buffer = gst_tag_lib_mux_render_tag (mux);
if (tag_buffer == NULL)
goto no_tag_buffer;
ret = gst_pad_push (mux->srcpad, tag_buffer);
if (ret != GST_FLOW_OK) {
GST_DEBUG_OBJECT (mux, "flow: %s", gst_flow_get_name (ret));
gst_buffer_unref (buffer);
return ret;
}
/* Now send the cached newsegment event that we got from upstream */
if (mux->newsegment_ev) {
GST_DEBUG_OBJECT (mux, "sending cached newsegment event");
gst_pad_push_event (mux->srcpad,
gst_tag_lib_mux_adjust_event_offsets (mux, mux->newsegment_ev));
gst_event_unref (mux->newsegment_ev);
mux->newsegment_ev = NULL;
} else {
/* upstream sent no newsegment event or only one in a non-BYTE format */
}
mux->render_tag = FALSE;
}
buffer = gst_buffer_make_metadata_writable (buffer);
if (GST_BUFFER_OFFSET (buffer) != GST_BUFFER_OFFSET_NONE) {
GST_LOG_OBJECT (mux, "Adjusting buffer offset from %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT, GST_BUFFER_OFFSET (buffer),
GST_BUFFER_OFFSET (buffer) + mux->tag_size);
GST_BUFFER_OFFSET (buffer) += mux->tag_size;
}
gst_buffer_set_caps (buffer, GST_PAD_CAPS (mux->srcpad));
return gst_pad_push (mux->srcpad, buffer);
/* ERRORS */
no_tag_buffer:
{
GST_ELEMENT_ERROR (mux, LIBRARY, ENCODE, (NULL), (NULL));
return GST_FLOW_ERROR;
}
}
static gboolean
gst_tag_lib_mux_sink_event (GstPad * pad, GstEvent * event)
{
GstTagLibMux *mux;
gboolean result;
mux = GST_TAG_LIB_MUX (gst_pad_get_parent (pad));
result = FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:{
GstTagList *tags;
gst_event_parse_tag (event, &tags);
GST_INFO_OBJECT (mux, "Got tag event: %" GST_PTR_FORMAT, tags);
if (mux->event_tags != NULL) {
gst_tag_list_insert (mux->event_tags, tags, GST_TAG_MERGE_REPLACE);
} else {
mux->event_tags = gst_tag_list_copy (tags);
}
GST_INFO_OBJECT (mux, "Event tags are now: %" GST_PTR_FORMAT,
mux->event_tags);
/* just drop the event, we'll push a new tag event in render_tag */
gst_event_unref (event);
result = TRUE;
break;
}
case GST_EVENT_NEWSEGMENT:{
GstFormat fmt;
gst_event_parse_new_segment (event, NULL, NULL, &fmt, NULL, NULL, NULL);
if (fmt != GST_FORMAT_BYTES) {
GST_WARNING_OBJECT (mux, "dropping newsegment event in %s format",
gst_format_get_name (fmt));
gst_event_unref (event);
break;
}
if (mux->render_tag) {
/* we have not rendered the tag yet, which means that we don't know
* how large it is going to be yet, so we can't adjust the offsets
* here at this point and need to cache the newsegment event for now
* (also, there could be tag events coming after this newsegment event
* and before the first buffer). */
if (mux->newsegment_ev) {
GST_WARNING_OBJECT (mux, "discarding old cached newsegment event");
gst_event_unref (mux->newsegment_ev);
}
GST_LOG_OBJECT (mux, "caching newsegment event for later");
mux->newsegment_ev = event;
} else {
GST_DEBUG_OBJECT (mux, "got newsegment event, adjusting offsets");
gst_pad_push_event (mux->srcpad,
gst_tag_lib_mux_adjust_event_offsets (mux, event));
gst_event_unref (event);
}
event = NULL;
result = TRUE;
break;
}
default:
result = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (mux);
return result;
}
static GstStateChangeReturn
gst_tag_lib_mux_change_state (GstElement * element, GstStateChange transition)
{
GstTagLibMux *mux;
GstStateChangeReturn result;
mux = GST_TAG_LIB_MUX (element);
result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (result != GST_STATE_CHANGE_SUCCESS) {
return result;
}
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:{
if (mux->newsegment_ev) {
gst_event_unref (mux->newsegment_ev);
mux->newsegment_ev = NULL;
}
if (mux->event_tags) {
gst_tag_list_free (mux->event_tags);
mux->event_tags = NULL;
}
mux->tag_size = 0;
mux->render_tag = TRUE;
break;
}
default:
break;
}
return result;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return (gst_id3v2_mux_plugin_init (plugin)
&& gst_apev2_mux_plugin_init (plugin));
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"taglib",
"Tag writing plug-in based on taglib",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);

71
ext/taglib/gsttaglibmux.h
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@ -1,71 +0,0 @@
/* GStreamer taglib-based muxer base class
* Copyright (C) 2006 Christophe Fergeau <teuf@gnome.org>
* Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef GST_TAG_LIB_MUX_H
#define GST_TAG_LIB_MUX_H
#include <gst/gst.h>
G_BEGIN_DECLS
typedef struct _GstTagLibMux GstTagLibMux;
typedef struct _GstTagLibMuxClass GstTagLibMuxClass;
/* Definition of structure storing data for this element. */
struct _GstTagLibMux {
GstElement element;
GstPad *srcpad;
GstPad *sinkpad;
GstTagList *event_tags; /* tags received from upstream elements */
gsize tag_size;
gboolean render_tag;
GstEvent *newsegment_ev; /* cached newsegment event from upstream */
};
/* Standard definition defining a class for this element. */
struct _GstTagLibMuxClass {
GstElementClass parent_class;
/* vfuncs */
GstBuffer * (*render_tag) (GstTagLibMux * mux, GstTagList * tag_list);
};
/* Standard macros for defining types for this element. */
#define GST_TYPE_TAG_LIB_MUX \
(gst_tag_lib_mux_get_type())
#define GST_TAG_LIB_MUX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TAG_LIB_MUX,GstTagLibMux))
#define GST_TAG_LIB_MUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TAG_LIB_MUX,GstTagLibMuxClass))
#define GST_IS_TAG_LIB_MUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TAG_LIB_MUX))
#define GST_IS_TAG_LIB_MUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TAG_LIB_MUX))
/* Standard function returning type information. */
GType gst_tag_lib_mux_get_type (void);
gboolean gst_apev2_mux_plugin_init (GstPlugin * plugin);
gboolean gst_id3v2_mux_plugin_init (GstPlugin * plugin);
G_END_DECLS
#endif

49
ext/taglib/gsttaglibplugin.c Normal file
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@ -0,0 +1,49 @@
/* GStreamer taglib-based muxer base class
* Copyright (C) 2006 Christophe Fergeau <teuf@gnome.org>
* Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
* Copyright (C) 2006 Sebastian Dröge <slomo@circular-chaos.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstapev2mux.h"
#include "gstid3v2mux.h"
#include <gst/tag/tag.h>
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "id3v2mux", GST_RANK_NONE,
GST_TYPE_ID3V2_MUX) ||
!gst_element_register (plugin, "apev2mux", GST_RANK_NONE,
GST_TYPE_APEV2_MUX))
return FALSE;
gst_tag_register_musicbrainz_tags ();
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"taglib",
"Tag writing plug-in based on taglib",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);