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videoencoder: fix tag handling

Browse source 
Merge upstream tags with encoder tags and update whenever
any of those changes.

https://bugzilla.gnome.org/show_bug.cgi?id=679768
This commit is contained in:
Tim-Philipp Müller 2015-08-18 12:29:29 +01:00
parent 4c00709e22
commit c21a972421
1 changed files with 102 additions and 33 deletions
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135
gst-libs/gst/video/gstvideoencoder.c
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@ -162,7 +162,13 @@ struct _GstVideoEncoderPrivate
GstAllocator *allocator;
GstAllocationParams params;
/* upstream stream tags (global tags are passed through as-is) */
GstTagList *upstream_tags;
/* subclass tags */
GstTagList *tags;
GstTagMergeMode tags_merge_mode;
gboolean tags_changed;
GstClockTime min_pts;
@ -365,9 +371,14 @@ gst_video_encoder_reset (GstVideoEncoder * encoder, gboolean hard)
gst_video_codec_state_unref (priv->output_state);
priv->output_state = NULL;
if (priv->upstream_tags) {
gst_tag_list_unref (priv->upstream_tags);
priv->upstream_tags = NULL;
}
if (priv->tags)
gst_tag_list_unref (priv->tags);
priv->tags = NULL;
priv->tags_merge_mode = GST_TAG_MERGE_APPEND;
priv->tags_changed = FALSE;
g_list_foreach (priv->headers, (GFunc) gst_event_unref, NULL);
@ -920,12 +931,43 @@ gst_video_encoder_push_event (GstVideoEncoder * encoder, GstEvent * event)
return gst_pad_push_event (encoder->srcpad, event);
}
static GstEvent *
gst_video_encoder_create_merged_tags_event (GstVideoEncoder * enc)
{
GstTagList *merged_tags;
GST_LOG_OBJECT (enc, "upstream : %" GST_PTR_FORMAT, enc->priv->upstream_tags);
GST_LOG_OBJECT (enc, "encoder : %" GST_PTR_FORMAT, enc->priv->tags);
GST_LOG_OBJECT (enc, "mode : %d", enc->priv->tags_merge_mode);
merged_tags =
gst_tag_list_merge (enc->priv->upstream_tags, enc->priv->tags,
enc->priv->tags_merge_mode);
GST_DEBUG_OBJECT (enc, "merged : %" GST_PTR_FORMAT, merged_tags);
if (merged_tags == NULL)
return NULL;
if (gst_tag_list_is_empty (merged_tags)) {
gst_tag_list_unref (merged_tags);
return NULL;
}
return gst_event_new_tag (merged_tags);
}
static inline void
gst_video_encoder_check_and_push_tags (GstVideoEncoder * encoder)
{
if (encoder->priv->tags && encoder->priv->tags_changed) {
gst_video_encoder_push_event (encoder,
gst_event_new_tag (gst_tag_list_ref (encoder->priv->tags)));
if (encoder->priv->tags_changed) {
GstEvent *tags_event;
tags_event = gst_video_encoder_create_merged_tags_event (encoder);
if (tags_event != NULL)
gst_video_encoder_push_event (encoder, tags_event);
encoder->priv->tags_changed = FALSE;
}
}
@ -1031,6 +1073,19 @@ gst_video_encoder_sink_event_default (GstVideoEncoder * encoder,
}
break;
}
case GST_EVENT_STREAM_START:
{
GST_VIDEO_ENCODER_STREAM_LOCK (encoder);
/* Flush upstream tags after a STREAM_START */
GST_DEBUG_OBJECT (encoder, "STREAM_START, clearing upstream tags");
if (encoder->priv->upstream_tags) {
gst_tag_list_unref (encoder->priv->upstream_tags);
encoder->priv->upstream_tags = NULL;
encoder->priv->tags_changed = TRUE;
}
GST_VIDEO_ENCODER_STREAM_UNLOCK (encoder);
break;
}
case GST_EVENT_TAG:
{
GstTagList *tags;
@ -1038,26 +1093,31 @@ gst_video_encoder_sink_event_default (GstVideoEncoder * encoder,
gst_event_parse_tag (event, &tags);
if (gst_tag_list_get_scope (tags) == GST_TAG_SCOPE_STREAM) {
tags = gst_tag_list_copy (tags);
GST_VIDEO_ENCODER_STREAM_LOCK (encoder);
if (encoder->priv->upstream_tags != tags) {
tags = gst_tag_list_copy (tags);
/* FIXME: make generic based on GST_TAG_FLAG_ENCODED */
gst_tag_list_remove_tag (tags, GST_TAG_CODEC);
gst_tag_list_remove_tag (tags, GST_TAG_AUDIO_CODEC);
gst_tag_list_remove_tag (tags, GST_TAG_VIDEO_CODEC);
gst_tag_list_remove_tag (tags, GST_TAG_SUBTITLE_CODEC);
gst_tag_list_remove_tag (tags, GST_TAG_CONTAINER_FORMAT);
gst_tag_list_remove_tag (tags, GST_TAG_BITRATE);
gst_tag_list_remove_tag (tags, GST_TAG_NOMINAL_BITRATE);
gst_tag_list_remove_tag (tags, GST_TAG_MAXIMUM_BITRATE);
gst_tag_list_remove_tag (tags, GST_TAG_MINIMUM_BITRATE);
gst_tag_list_remove_tag (tags, GST_TAG_ENCODER);
gst_tag_list_remove_tag (tags, GST_TAG_ENCODER_VERSION);
/* FIXME: make generic based on GST_TAG_FLAG_ENCODED */
gst_tag_list_remove_tag (tags, GST_TAG_CODEC);
gst_tag_list_remove_tag (tags, GST_TAG_AUDIO_CODEC);
gst_tag_list_remove_tag (tags, GST_TAG_VIDEO_CODEC);
gst_tag_list_remove_tag (tags, GST_TAG_SUBTITLE_CODEC);
gst_tag_list_remove_tag (tags, GST_TAG_CONTAINER_FORMAT);
gst_tag_list_remove_tag (tags, GST_TAG_BITRATE);
gst_tag_list_remove_tag (tags, GST_TAG_NOMINAL_BITRATE);
gst_tag_list_remove_tag (tags, GST_TAG_MAXIMUM_BITRATE);
gst_tag_list_remove_tag (tags, GST_TAG_MINIMUM_BITRATE);
gst_tag_list_remove_tag (tags, GST_TAG_ENCODER);
gst_tag_list_remove_tag (tags, GST_TAG_ENCODER_VERSION);
gst_video_encoder_merge_tags (encoder, tags, GST_TAG_MERGE_REPLACE);
gst_tag_list_unref (tags);
if (encoder->priv->upstream_tags)
gst_tag_list_unref (encoder->priv->upstream_tags);
encoder->priv->upstream_tags = tags;
GST_INFO_OBJECT (encoder, "upstream tags: %" GST_PTR_FORMAT, tags);
}
gst_event_unref (event);
event = NULL;
ret = TRUE;
event = gst_video_encoder_create_merged_tags_event (encoder);
GST_VIDEO_ENCODER_STREAM_UNLOCK (encoder);
}
break;
}
@ -2344,11 +2404,13 @@ gst_video_encoder_get_frames (GstVideoEncoder * encoder)
/**
* gst_video_encoder_merge_tags:
* @encoder: a #GstVideoEncoder
* @tags: a #GstTagList to merge
* @mode: the #GstTagMergeMode to use
* @tags: (allow-none): a #GstTagList to merge, or NULL to unset
* previously-set tags
* @mode: the #GstTagMergeMode to use, usually #GST_TAG_MERGE_REPLACE
*
* Adds tags to so-called pending tags, which will be processed
* before pushing out data downstream.
* Sets the video encoder tags and how they should be merged with any
* upstream stream tags. This will override any tags previously-set
* with gst_video_encoder_merge_tags().
*
* Note that this is provided for convenience, and the subclass is
* not required to use this and can still do tag handling on its own.
@ -2359,19 +2421,26 @@ void
gst_video_encoder_merge_tags (GstVideoEncoder * encoder,
const GstTagList * tags, GstTagMergeMode mode)
{
GstTagList *otags;
g_return_if_fail (GST_IS_VIDEO_ENCODER (encoder));
g_return_if_fail (tags == NULL || GST_IS_TAG_LIST (tags));
g_return_if_fail (tags == NULL || mode != GST_TAG_MERGE_UNDEFINED);
GST_VIDEO_ENCODER_STREAM_LOCK (encoder);
if (tags)
GST_DEBUG_OBJECT (encoder, "merging tags %" GST_PTR_FORMAT, tags);
otags = encoder->priv->tags;
encoder->priv->tags = gst_tag_list_merge (encoder->priv->tags, tags, mode);
if (otags)
gst_tag_list_unref (otags);
encoder->priv->tags_changed = TRUE;
if (encoder->priv->tags != tags) {
if (encoder->priv->tags) {
gst_tag_list_unref (encoder->priv->tags);
encoder->priv->tags = NULL;
encoder->priv->tags_merge_mode = GST_TAG_MERGE_APPEND;
}
if (tags) {
encoder->priv->tags = gst_tag_list_ref ((GstTagList *) tags);
encoder->priv->tags_merge_mode = mode;
}
GST_DEBUG_OBJECT (encoder, "setting encoder tags to %" GST_PTR_FORMAT,
tags);
encoder->priv->tags_changed = TRUE;
}
GST_VIDEO_ENCODER_STREAM_UNLOCK (encoder);
}