+++ /dev/null
-/* 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);
+++ /dev/null
-/* 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
projects / platform / upstream / gstreamer.git / commitdiff