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id3mux: use now-public GstTagMux base class from libgsttag

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This commit is contained in:
Tim-Philipp Müller 2011-07-29 19:43:11 +01:00
parent e5970c8805
commit 830a337799
5 changed files with 3 additions and 610 deletions
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3
gst/id3tag/Makefile.am
View file

@ -2,7 +2,6 @@ plugin_LTLIBRARIES = libgstid3tag.la
libgstid3tag_la_SOURCES = \
gstid3mux.c \
gsttagmux.c \
id3tag.c
libgstid3tag_la_CFLAGS = \
@ -16,7 +15,7 @@ libgstid3tag_la_LIBADD = \
libgstid3tag_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstid3tag_la_LIBTOOLFLAGS = --tag=disable-static
noinst_HEADERS = gstid3mux.h gsttagmux.h id3tag.h
noinst_HEADERS = gstid3mux.h id3tag.h
Android.mk: Makefile.am $(BUILT_SOURCES)
androgenizer \

2
gst/id3tag/gstid3mux.h
View file

@ -23,7 +23,7 @@
#ifndef GST_ID3_MUX_H
#define GST_ID3_MUX_H
#include "gsttagmux.h"
#include <gst/tag/gsttagmux.h>
#include "id3tag.h"
G_BEGIN_DECLS

537
gst/id3tag/gsttagmux.c
View file

@ -1,537 +0,0 @@
/* GStreamer tag 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>
* Copyright (C) 2009 Pioneers of the Inevitable <songbird@songbirdnest.com>
*
* 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.
*/
/**
* FIXME: documentation
*
* Since: 0.10.36
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <gst/gsttagsetter.h>
#include <gst/tag/tag.h>
#include "gsttagmux.h"
struct _GstTagMuxPrivate
{
GstPad *srcpad;
GstPad *sinkpad;
GstTagList *event_tags; /* tags received from upstream elements */
GstTagList *final_tags; /* Final set of tags used for muxing */
gsize start_tag_size;
gsize end_tag_size;
gboolean render_start_tag;
gboolean render_end_tag;
gint64 current_offset;
gint64 max_offset;
GstEvent *newsegment_ev; /* cached newsegment event from upstream */
};
GST_DEBUG_CATEGORY_STATIC (gst_tag_mux_debug);
#define GST_CAT_DEFAULT gst_tag_mux_debug
static void
gst_tag_mux_iface_init (GType tag_type)
{
static const GInterfaceInfo tag_setter_info = {
NULL,
NULL,
NULL
};
g_type_add_interface_static (tag_type, GST_TYPE_TAG_SETTER, &tag_setter_info);
}
/* make sure to register a less generic type so we can easily move this
* GstTagMux base class into -base without causing GType name conflicts */
typedef GstTagMux GstId3BaseMux;
typedef GstTagMuxClass GstId3BaseMuxClass;
GST_BOILERPLATE_FULL (GstId3BaseMux, gst_tag_mux,
GstElement, GST_TYPE_ELEMENT, gst_tag_mux_iface_init);
static GstStateChangeReturn
gst_tag_mux_change_state (GstElement * element, GstStateChange transition);
static GstFlowReturn gst_tag_mux_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_tag_mux_sink_event (GstPad * pad, GstEvent * event);
static void
gst_tag_mux_finalize (GObject * obj)
{
GstTagMux *mux = GST_TAG_MUX (obj);
if (mux->priv->newsegment_ev) {
gst_event_unref (mux->priv->newsegment_ev);
mux->priv->newsegment_ev = NULL;
}
if (mux->priv->event_tags) {
gst_tag_list_free (mux->priv->event_tags);
mux->priv->event_tags = NULL;
}
if (mux->priv->final_tags) {
gst_tag_list_free (mux->priv->final_tags);
mux->priv->final_tags = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_tag_mux_base_init (gpointer g_class)
{
GST_DEBUG_CATEGORY_INIT (gst_tag_mux_debug, "id3basemux", 0,
"tag muxer base class for Id3Mux");
}
static void
gst_tag_mux_class_init (GstTagMuxClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_tag_mux_finalize);
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_tag_mux_change_state);
g_type_class_add_private (klass, sizeof (GstTagMuxPrivate));
}
static void
gst_tag_mux_init (GstTagMux * mux, GstTagMuxClass * mux_class)
{
GstElementClass *element_klass = GST_ELEMENT_CLASS (mux_class);
GstPadTemplate *tmpl;
mux->priv =
G_TYPE_INSTANCE_GET_PRIVATE (mux, GST_TYPE_TAG_MUX, GstTagMuxPrivate);
/* pad through which data comes in to the element */
tmpl = gst_element_class_get_pad_template (element_klass, "sink");
if (tmpl) {
mux->priv->sinkpad = gst_pad_new_from_template (tmpl, "sink");
} else {
g_warning ("GstTagMux subclass '%s' did not install a %s pad template!\n",
G_OBJECT_CLASS_NAME (mux_class), "sink");
mux->priv->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
}
gst_pad_set_chain_function (mux->priv->sinkpad,
GST_DEBUG_FUNCPTR (gst_tag_mux_chain));
gst_pad_set_event_function (mux->priv->sinkpad,
GST_DEBUG_FUNCPTR (gst_tag_mux_sink_event));
gst_element_add_pad (GST_ELEMENT (mux), mux->priv->sinkpad);
/* pad through which data goes out of the element */
tmpl = gst_element_class_get_pad_template (element_klass, "src");
if (tmpl) {
GstCaps *tmpl_caps = gst_pad_template_get_caps (tmpl);
mux->priv->srcpad = gst_pad_new_from_template (tmpl, "src");
gst_pad_use_fixed_caps (mux->priv->srcpad);
if (tmpl_caps != NULL && gst_caps_is_fixed (tmpl_caps)) {
gst_pad_set_caps (mux->priv->srcpad, tmpl_caps);
}
} else {
g_warning ("GstTagMux subclass '%s' did not install a %s pad template!\n",
G_OBJECT_CLASS_NAME (mux_class), "source");
mux->priv->srcpad = gst_pad_new ("src", GST_PAD_SRC);
}
gst_element_add_pad (GST_ELEMENT (mux), mux->priv->srcpad);
mux->priv->render_start_tag = TRUE;
mux->priv->render_end_tag = TRUE;
}
static GstTagList *
gst_tag_mux_get_tags (GstTagMux * mux)
{
GstTagSetter *tagsetter = GST_TAG_SETTER (mux);
const GstTagList *tagsetter_tags;
GstTagMergeMode merge_mode;
if (mux->priv->final_tags)
return mux->priv->final_tags;
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->priv->event_tags);
GST_LOG_OBJECT (mux, "set tags: %" GST_PTR_FORMAT, tagsetter_tags);
mux->priv->final_tags =
gst_tag_list_merge (tagsetter_tags, mux->priv->event_tags, merge_mode);
GST_LOG_OBJECT (mux, "final tags: %" GST_PTR_FORMAT, mux->priv->final_tags);
return mux->priv->final_tags;
}
static GstFlowReturn
gst_tag_mux_render_start_tag (GstTagMux * mux)
{
GstTagMuxClass *klass;
GstBuffer *buffer;
GstTagList *taglist;
GstEvent *event;
GstFlowReturn ret;
taglist = gst_tag_mux_get_tags (mux);
klass = GST_TAG_MUX_CLASS (G_OBJECT_GET_CLASS (mux));
if (klass->render_start_tag == NULL)
goto no_vfunc;
buffer = klass->render_start_tag (mux, taglist);
/* Null buffer is ok, just means we're not outputting anything */
if (buffer == NULL) {
GST_INFO_OBJECT (mux, "No start tag generated");
mux->priv->start_tag_size = 0;
return GST_FLOW_OK;
}
if (GST_BUFFER_CAPS (buffer) == NULL) {
buffer = gst_buffer_make_metadata_writable (buffer);
gst_buffer_set_caps (buffer, GST_PAD_CAPS (mux->priv->srcpad));
}
mux->priv->start_tag_size = GST_BUFFER_SIZE (buffer);
GST_LOG_OBJECT (mux, "tag size = %" G_GSIZE_FORMAT " bytes",
mux->priv->start_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->priv->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 use a copy */
event = gst_event_new_tag (gst_tag_list_copy (taglist));
gst_pad_push_event (mux->priv->srcpad, event);
GST_BUFFER_OFFSET (buffer) = 0;
ret = gst_pad_push (mux->priv->srcpad, buffer);
mux->priv->current_offset = mux->priv->start_tag_size;
mux->priv->max_offset =
MAX (mux->priv->max_offset, mux->priv->current_offset);
return ret;
no_vfunc:
{
GST_ERROR_OBJECT (mux, "Subclass does not implement "
"render_start_tag vfunc!");
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_tag_mux_render_end_tag (GstTagMux * mux)
{
GstTagMuxClass *klass;
GstBuffer *buffer;
GstTagList *taglist;
GstFlowReturn ret;
taglist = gst_tag_mux_get_tags (mux);
klass = GST_TAG_MUX_CLASS (G_OBJECT_GET_CLASS (mux));
if (klass->render_end_tag == NULL)
goto no_vfunc;
buffer = klass->render_end_tag (mux, taglist);
if (buffer == NULL) {
GST_INFO_OBJECT (mux, "No end tag generated");
mux->priv->end_tag_size = 0;
return GST_FLOW_OK;
}
if (GST_BUFFER_CAPS (buffer) == NULL) {
buffer = gst_buffer_make_metadata_writable (buffer);
gst_buffer_set_caps (buffer, GST_PAD_CAPS (mux->priv->srcpad));
}
mux->priv->end_tag_size = GST_BUFFER_SIZE (buffer);
GST_LOG_OBJECT (mux, "tag size = %" G_GSIZE_FORMAT " bytes",
mux->priv->end_tag_size);
/* Send newsegment event from the end of the file, so it gets written there,
independent of whatever new segment events upstream has sent us */
gst_pad_push_event (mux->priv->srcpad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
mux->priv->max_offset, -1, 0));
GST_BUFFER_OFFSET (buffer) = mux->priv->max_offset;
ret = gst_pad_push (mux->priv->srcpad, buffer);
return ret;
no_vfunc:
{
GST_ERROR_OBJECT (mux, "Subclass does not implement "
"render_end_tag vfunc!");
return GST_FLOW_ERROR;
}
}
static GstEvent *
gst_tag_mux_adjust_event_offsets (GstTagMux * 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->priv->start_tag_size;
if (stop != -1)
stop += mux->priv->start_tag_size;
if (cur != -1)
cur += mux->priv->start_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->priv->start_tag_size);
return gst_event_new_new_segment (TRUE, 1.0, format, start, stop, cur);
}
static GstFlowReturn
gst_tag_mux_chain (GstPad * pad, GstBuffer * buffer)
{
GstTagMux *mux = GST_TAG_MUX (GST_OBJECT_PARENT (pad));
GstFlowReturn ret;
int length;
if (mux->priv->render_start_tag) {
GST_INFO_OBJECT (mux, "Adding tags to stream");
ret = gst_tag_mux_render_start_tag (mux);
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->priv->newsegment_ev) {
gint64 start;
GstEvent *newseg;
GST_DEBUG_OBJECT (mux, "sending cached newsegment event");
newseg = gst_tag_mux_adjust_event_offsets (mux, mux->priv->newsegment_ev);
gst_event_unref (mux->priv->newsegment_ev);
mux->priv->newsegment_ev = NULL;
gst_event_parse_new_segment (newseg, NULL, NULL, NULL, &start, NULL,
NULL);
gst_pad_push_event (mux->priv->srcpad, newseg);
mux->priv->current_offset = start;
mux->priv->max_offset =
MAX (mux->priv->max_offset, mux->priv->current_offset);
} else {
/* upstream sent no newsegment event or only one in a non-BYTE format */
}
mux->priv->render_start_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->priv->start_tag_size);
GST_BUFFER_OFFSET (buffer) += mux->priv->start_tag_size;
}
length = GST_BUFFER_SIZE (buffer);
gst_buffer_set_caps (buffer, GST_PAD_CAPS (mux->priv->srcpad));
ret = gst_pad_push (mux->priv->srcpad, buffer);
mux->priv->current_offset += length;
mux->priv->max_offset =
MAX (mux->priv->max_offset, mux->priv->current_offset);
return ret;
}
static gboolean
gst_tag_mux_sink_event (GstPad * pad, GstEvent * event)
{
GstTagMux *mux;
gboolean result;
mux = GST_TAG_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->priv->event_tags != NULL) {
gst_tag_list_insert (mux->priv->event_tags, tags,
GST_TAG_MERGE_REPLACE);
} else {
mux->priv->event_tags = gst_tag_list_copy (tags);
}
GST_INFO_OBJECT (mux, "Event tags are now: %" GST_PTR_FORMAT,
mux->priv->event_tags);
/* just drop the event, we'll push a new tag event in render_start_tag */
gst_event_unref (event);
result = TRUE;
break;
}
case GST_EVENT_NEWSEGMENT:{
GstFormat fmt;
gint64 start;
gst_event_parse_new_segment (event, NULL, NULL, &fmt, &start, 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->priv->render_start_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->priv->newsegment_ev) {
GST_WARNING_OBJECT (mux, "discarding old cached newsegment event");
gst_event_unref (mux->priv->newsegment_ev);
}
GST_LOG_OBJECT (mux, "caching newsegment event for later");
mux->priv->newsegment_ev = event;
} else {
GST_DEBUG_OBJECT (mux, "got newsegment event, adjusting offsets");
gst_pad_push_event (mux->priv->srcpad,
gst_tag_mux_adjust_event_offsets (mux, event));
gst_event_unref (event);
mux->priv->current_offset = start;
mux->priv->max_offset =
MAX (mux->priv->max_offset, mux->priv->current_offset);
}
event = NULL;
result = TRUE;
break;
}
case GST_EVENT_EOS:{
if (mux->priv->render_end_tag) {
GstFlowReturn ret;
GST_INFO_OBJECT (mux, "Adding tags to stream");
ret = gst_tag_mux_render_end_tag (mux);
if (ret != GST_FLOW_OK) {
GST_DEBUG_OBJECT (mux, "flow: %s", gst_flow_get_name (ret));
return ret;
}
mux->priv->render_end_tag = FALSE;
}
/* Now forward EOS */
result = gst_pad_event_default (pad, event);
break;
}
default:
result = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (mux);
return result;
}
static GstStateChangeReturn
gst_tag_mux_change_state (GstElement * element, GstStateChange transition)
{
GstTagMux *mux;
GstStateChangeReturn result;
mux = GST_TAG_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->priv->newsegment_ev) {
gst_event_unref (mux->priv->newsegment_ev);
mux->priv->newsegment_ev = NULL;
}
if (mux->priv->event_tags) {
gst_tag_list_free (mux->priv->event_tags);
mux->priv->event_tags = NULL;
}
mux->priv->start_tag_size = 0;
mux->priv->end_tag_size = 0;
mux->priv->render_start_tag = TRUE;
mux->priv->render_end_tag = TRUE;
mux->priv->current_offset = 0;
mux->priv->max_offset = 0;
break;
}
default:
break;
}
return result;
}

69
gst/id3tag/gsttagmux.h
View file

@ -1,69 +0,0 @@
/* GStreamer tag muxer base class
*
* Copyright (C) 2006 Christophe Fergeau <teuf@gnome.org>
* Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
* Copyright (C) 2009 Pioneers of the Inevitable <songbird@songbirdnest.com>
*
* 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_MUX_H
#define GST_TAG_MUX_H
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_TAG_MUX \
(gst_tag_mux_get_type())
#define GST_TAG_MUX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TAG_MUX,GstTagMux))
#define GST_TAG_MUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TAG_MUX,GstTagMuxClass))
#define GST_IS_TAG_MUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TAG_MUX))
#define GST_IS_TAG_MUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TAG_MUX))
typedef struct _GstTagMux GstTagMux;
typedef struct _GstTagMuxClass GstTagMuxClass;
typedef struct _GstTagMuxPrivate GstTagMuxPrivate;
struct _GstTagMux {
GstElement element;
/*< private >*/
GstTagMuxPrivate *priv;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstTagMuxClass {
GstElementClass parent_class;
/* vfuncs */
GstBuffer * (*render_start_tag) (GstTagMux * mux, const GstTagList * tag_list);
GstBuffer * (*render_end_tag) (GstTagMux * mux, const GstTagList * tag_list);
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GType gst_tag_mux_get_type (void);
G_END_DECLS
#endif

2
gst/id3tag/id3tag.h
View file

@ -17,7 +17,7 @@
* Boston, MA 02111-1307, USA.
*/
#include "gsttagmux.h"
#include <gst/tag/gsttagmux.h>
G_BEGIN_DECLS