diff options
Diffstat (limited to 'gst/id3tag/gsttagmux.c')
| -rw-r--r-- | gst/id3tag/gsttagmux.c | 495 |
1 files changed, 0 insertions, 495 deletions
diff --git a/gst/id3tag/gsttagmux.c b/gst/id3tag/gsttagmux.c deleted file mode 100644 index 4aafb96d8..000000000 --- a/gst/id3tag/gsttagmux.c +++ /dev/null @@ -1,495 +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. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <string.h> -#include <gst/gsttagsetter.h> -#include <gst/tag/tag.h> - -#include "gsttagmux.h" - -GST_DEBUG_CATEGORY_STATIC (gst_tag_mux_debug); -#define GST_CAT_DEFAULT gst_tag_mux_debug - -/* Subclass provides a src template and pad. We accept anything as input here, - however. */ - -static GstStaticPadTemplate gst_tag_mux_sink_template = -GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("ANY")); - -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->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; - } - - if (mux->final_tags) { - gst_tag_list_free (mux->final_tags); - mux->final_tags = NULL; - } - - G_OBJECT_CLASS (parent_class)->finalize (obj); -} - -static void -gst_tag_mux_base_init (gpointer g_class) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); - - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&gst_tag_mux_sink_template)); - - 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); -} - -static void -gst_tag_mux_init (GstTagMux * mux, GstTagMuxClass * 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_mux_sink_template, "sink"); - gst_pad_set_chain_function (mux->sinkpad, - GST_DEBUG_FUNCPTR (gst_tag_mux_chain)); - gst_pad_set_event_function (mux->sinkpad, - GST_DEBUG_FUNCPTR (gst_tag_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_start_tag = TRUE; - mux->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->final_tags) - return mux->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->event_tags); - GST_LOG_OBJECT (mux, "set tags: %" GST_PTR_FORMAT, tagsetter_tags); - - mux->final_tags = - gst_tag_list_merge (tagsetter_tags, mux->event_tags, merge_mode); - - GST_LOG_OBJECT (mux, "final tags: %" GST_PTR_FORMAT, mux->final_tags); - - return mux->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->start_tag_size = 0; - return GST_FLOW_OK; - } - - mux->start_tag_size = GST_BUFFER_SIZE (buffer); - GST_LOG_OBJECT (mux, "tag size = %" G_GSIZE_FORMAT " bytes", - mux->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->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->srcpad, event); - - GST_BUFFER_OFFSET (buffer) = 0; - ret = gst_pad_push (mux->srcpad, buffer); - - mux->current_offset = mux->start_tag_size; - mux->max_offset = MAX (mux->max_offset, mux->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->end_tag_size = 0; - return GST_FLOW_OK; - } - - mux->end_tag_size = GST_BUFFER_SIZE (buffer); - GST_LOG_OBJECT (mux, "tag size = %" G_GSIZE_FORMAT " bytes", - mux->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->srcpad, - gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, mux->max_offset, - -1, 0)); - - GST_BUFFER_OFFSET (buffer) = mux->max_offset; - ret = gst_pad_push (mux->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->start_tag_size; - if (stop != -1) - stop += mux->start_tag_size; - if (cur != -1) - cur += mux->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->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->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->newsegment_ev) { - gint64 start; - GstEvent *newseg; - - GST_DEBUG_OBJECT (mux, "sending cached newsegment event"); - newseg = gst_tag_mux_adjust_event_offsets (mux, mux->newsegment_ev); - gst_event_unref (mux->newsegment_ev); - mux->newsegment_ev = NULL; - - gst_event_parse_new_segment (newseg, NULL, NULL, NULL, &start, NULL, - NULL); - - gst_pad_push_event (mux->srcpad, newseg); - mux->current_offset = start; - mux->max_offset = MAX (mux->max_offset, mux->current_offset); - } else { - /* upstream sent no newsegment event or only one in a non-BYTE format */ - } - - mux->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->start_tag_size); - GST_BUFFER_OFFSET (buffer) += mux->start_tag_size; - } - - length = GST_BUFFER_SIZE (buffer); - - gst_buffer_set_caps (buffer, GST_PAD_CAPS (mux->srcpad)); - ret = gst_pad_push (mux->srcpad, buffer); - - mux->current_offset += length; - mux->max_offset = MAX (mux->max_offset, mux->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->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_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->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->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_mux_adjust_event_offsets (mux, event)); - gst_event_unref (event); - - mux->current_offset = start; - mux->max_offset = MAX (mux->max_offset, mux->current_offset); - } - event = NULL; - result = TRUE; - break; - } - case GST_EVENT_EOS:{ - if (mux->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->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->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->start_tag_size = 0; - mux->end_tag_size = 0; - mux->render_start_tag = TRUE; - mux->render_end_tag = TRUE; - mux->current_offset = 0; - mux->max_offset = 0; - break; - } - default: - break; - } - - return result; -} |