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tagmux: fix up private base class header so it can be made public

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Move private bits into a private struct, add some padding.

https://bugzilla.gnome.org/show_bug.cgi?id=555437
This commit is contained in:
Tim-Philipp Müller 2011-07-15 20:39:20 +01:00
parent e16f2f891a
commit db88b19f1e
2 changed files with 132 additions and 100 deletions
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212
gst-libs/gst/tag/gsttagmux.c
View file

@ -1,5 +1,4 @@
/* 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>
@ -31,6 +30,23 @@
#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
@ -69,19 +85,19 @@ 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->priv->newsegment_ev) {
gst_event_unref (mux->priv->newsegment_ev);
mux->priv->newsegment_ev = NULL;
}
if (mux->event_tags) {
gst_tag_list_free (mux->event_tags);
mux->event_tags = NULL;
if (mux->priv->event_tags) {
gst_tag_list_free (mux->priv->event_tags);
mux->priv->event_tags = NULL;
}
if (mux->final_tags) {
gst_tag_list_free (mux->final_tags);
mux->final_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);
@ -110,6 +126,8 @@ gst_tag_mux_class_init (GstTagMuxClass * 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
@ -118,26 +136,30 @@ 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 */
mux->sinkpad =
mux->priv->sinkpad =
gst_pad_new_from_static_template (&gst_tag_mux_sink_template, "sink");
gst_pad_set_chain_function (mux->sinkpad,
gst_pad_set_chain_function (mux->priv->sinkpad,
GST_DEBUG_FUNCPTR (gst_tag_mux_chain));
gst_pad_set_event_function (mux->sinkpad,
gst_pad_set_event_function (mux->priv->sinkpad,
GST_DEBUG_FUNCPTR (gst_tag_mux_sink_event));
gst_element_add_pad (GST_ELEMENT (mux), mux->sinkpad);
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) {
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->priv->srcpad = gst_pad_new_from_template (tmpl, "src");
gst_pad_use_fixed_caps (mux->priv->srcpad);
/* FIXME: we assume the template caps are fixed.. */
gst_pad_set_caps (mux->priv->srcpad, gst_pad_template_get_caps (tmpl));
gst_element_add_pad (GST_ELEMENT (mux), mux->priv->srcpad);
}
mux->render_start_tag = TRUE;
mux->render_end_tag = TRUE;
mux->priv->render_start_tag = TRUE;
mux->priv->render_end_tag = TRUE;
}
static GstTagList *
@ -147,22 +169,22 @@ gst_tag_mux_get_tags (GstTagMux * mux)
const GstTagList *tagsetter_tags;
GstTagMergeMode merge_mode;
if (mux->final_tags)
return mux->final_tags;
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->event_tags);
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->final_tags =
gst_tag_list_merge (tagsetter_tags, mux->event_tags, merge_mode);
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->final_tags);
GST_LOG_OBJECT (mux, "final tags: %" GST_PTR_FORMAT, mux->priv->final_tags);
return mux->final_tags;
return mux->priv->final_tags;
}
static GstFlowReturn
@ -186,29 +208,35 @@ gst_tag_mux_render_start_tag (GstTagMux * mux)
/* 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;
mux->priv->start_tag_size = 0;
return GST_FLOW_OK;
}
mux->start_tag_size = GST_BUFFER_SIZE (buffer);
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->start_tag_size);
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->srcpad,
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->srcpad, event);
gst_pad_push_event (mux->priv->srcpad, event);
GST_BUFFER_OFFSET (buffer) = 0;
ret = gst_pad_push (mux->srcpad, buffer);
ret = gst_pad_push (mux->priv->srcpad, buffer);
mux->current_offset = mux->start_tag_size;
mux->max_offset = MAX (mux->max_offset, mux->current_offset);
mux->priv->current_offset = mux->priv->start_tag_size;
mux->priv->max_offset =
MAX (mux->priv->max_offset, mux->priv->current_offset);
return ret;
@ -239,22 +267,27 @@ gst_tag_mux_render_end_tag (GstTagMux * mux)
if (buffer == NULL) {
GST_INFO_OBJECT (mux, "No end tag generated");
mux->end_tag_size = 0;
mux->priv->end_tag_size = 0;
return GST_FLOW_OK;
}
mux->end_tag_size = GST_BUFFER_SIZE (buffer);
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->end_tag_size);
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->srcpad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, mux->max_offset,
-1, 0));
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->max_offset;
ret = gst_pad_push (mux->srcpad, buffer);
GST_BUFFER_OFFSET (buffer) = mux->priv->max_offset;
ret = gst_pad_push (mux->priv->srcpad, buffer);
return ret;
@ -279,15 +312,16 @@ gst_tag_mux_adjust_event_offsets (GstTagMux * mux,
g_assert (format == GST_FORMAT_BYTES);
if (start != -1)
start += mux->start_tag_size;
start += mux->priv->start_tag_size;
if (stop != -1)
stop += mux->start_tag_size;
stop += mux->priv->start_tag_size;
if (cur != -1)
cur += mux->start_tag_size;
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->start_tag_size);
" (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);
}
@ -299,7 +333,7 @@ gst_tag_mux_chain (GstPad * pad, GstBuffer * buffer)
GstFlowReturn ret;
int length;
if (mux->render_start_tag) {
if (mux->priv->render_start_tag) {
GST_INFO_OBJECT (mux, "Adding tags to stream");
ret = gst_tag_mux_render_start_tag (mux);
@ -310,26 +344,27 @@ gst_tag_mux_chain (GstPad * pad, GstBuffer * buffer)
}
/* Now send the cached newsegment event that we got from upstream */
if (mux->newsegment_ev) {
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->newsegment_ev);
gst_event_unref (mux->newsegment_ev);
mux->newsegment_ev = NULL;
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->srcpad, newseg);
mux->current_offset = start;
mux->max_offset = MAX (mux->max_offset, mux->current_offset);
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->render_start_tag = FALSE;
mux->priv->render_start_tag = FALSE;
}
buffer = gst_buffer_make_metadata_writable (buffer);
@ -337,17 +372,18 @@ gst_tag_mux_chain (GstPad * pad, GstBuffer * 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;
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->srcpad));
ret = gst_pad_push (mux->srcpad, buffer);
gst_buffer_set_caps (buffer, GST_PAD_CAPS (mux->priv->srcpad));
ret = gst_pad_push (mux->priv->srcpad, buffer);
mux->current_offset += length;
mux->max_offset = MAX (mux->max_offset, mux->current_offset);
mux->priv->current_offset += length;
mux->priv->max_offset =
MAX (mux->priv->max_offset, mux->priv->current_offset);
return ret;
}
@ -369,14 +405,15 @@ gst_tag_mux_sink_event (GstPad * pad, GstEvent * event)
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);
if (mux->priv->event_tags != NULL) {
gst_tag_list_insert (mux->priv->event_tags, tags,
GST_TAG_MERGE_REPLACE);
} else {
mux->event_tags = gst_tag_list_copy (tags);
mux->priv->event_tags = gst_tag_list_copy (tags);
}
GST_INFO_OBJECT (mux, "Event tags are now: %" GST_PTR_FORMAT,
mux->event_tags);
mux->priv->event_tags);
/* just drop the event, we'll push a new tag event in render_start_tag */
gst_event_unref (event);
@ -396,34 +433,35 @@ gst_tag_mux_sink_event (GstPad * pad, GstEvent * event)
break;
}
if (mux->render_start_tag) {
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->newsegment_ev) {
if (mux->priv->newsegment_ev) {
GST_WARNING_OBJECT (mux, "discarding old cached newsegment event");
gst_event_unref (mux->newsegment_ev);
gst_event_unref (mux->priv->newsegment_ev);
}
GST_LOG_OBJECT (mux, "caching newsegment event for later");
mux->newsegment_ev = event;
mux->priv->newsegment_ev = event;
} else {
GST_DEBUG_OBJECT (mux, "got newsegment event, adjusting offsets");
gst_pad_push_event (mux->srcpad,
gst_pad_push_event (mux->priv->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);
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->render_end_tag) {
if (mux->priv->render_end_tag) {
GstFlowReturn ret;
GST_INFO_OBJECT (mux, "Adding tags to stream");
@ -433,7 +471,7 @@ gst_tag_mux_sink_event (GstPad * pad, GstEvent * event)
return ret;
}
mux->render_end_tag = FALSE;
mux->priv->render_end_tag = FALSE;
}
/* Now forward EOS */
@ -466,20 +504,20 @@ gst_tag_mux_change_state (GstElement * element, GstStateChange transition)
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->priv->newsegment_ev) {
gst_event_unref (mux->priv->newsegment_ev);
mux->priv->newsegment_ev = NULL;
}
if (mux->event_tags) {
gst_tag_list_free (mux->event_tags);
mux->event_tags = NULL;
if (mux->priv->event_tags) {
gst_tag_list_free (mux->priv->event_tags);
mux->priv->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;
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:

20
gst-libs/gst/tag/gsttagmux.h
View file

@ -29,24 +29,16 @@ G_BEGIN_DECLS
typedef struct _GstTagMux GstTagMux;
typedef struct _GstTagMuxClass GstTagMuxClass;
typedef struct _GstTagMuxPrivate GstTagMuxPrivate;
/* Definition of structure storing data for this element. */
struct _GstTagMux {
GstElement element;
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;
/*< private >*/
GstTagMuxPrivate *priv;
gint64 current_offset;
gint64 max_offset;
GstEvent *newsegment_ev; /* cached newsegment event from upstream */
gpointer _gst_reserved[GST_PADDING];
};
/* Standard definition defining a class for this element. */
@ -56,6 +48,9 @@ struct _GstTagMuxClass {
/* vfuncs */
GstBuffer * (*render_start_tag) (GstTagMux * mux, GstTagList * tag_list);
GstBuffer * (*render_end_tag) (GstTagMux * mux, GstTagList * tag_list);
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
/* Standard macros for defining types for this element. */
@ -76,4 +71,3 @@ GType gst_tag_mux_get_type (void);
G_END_DECLS
#endif