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cccombiner: merge buffers for both fields with caption type s334-1a

Browse source 
Other elements such as line21encoder expect both fields to be present
in the same meta, not one meta per field.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1496>
This commit is contained in:
Mathieu Duponchelle 2022-01-05 22:48:31 +01:00 committed by GStreamer Marge Bot
parent c63365c80f
commit 6861ea8fe1
1 changed files with 44 additions and 12 deletions
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56
subprojects/gst-plugins-bad/ext/closedcaption/gstcccombiner.c
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@ -683,8 +683,8 @@ schedule_caption (GstCCCombiner * self, GstBuffer * caption_buf,
}
static void
dequeue_caption (GstCCCombiner * self, const GstVideoTimeCode * tc, guint field,
gboolean drain)
dequeue_caption_one_field (GstCCCombiner * self, const GstVideoTimeCode * tc,
guint field, gboolean drain)
{
CaptionQueueItem *scheduled;
CaptionData caption_data;
@ -700,6 +700,39 @@ dequeue_caption (GstCCCombiner * self, const GstVideoTimeCode * tc, guint field,
}
}
static void
dequeue_caption_both_fields (GstCCCombiner * self, const GstVideoTimeCode * tc,
gboolean drain)
{
CaptionQueueItem *field0_scheduled, *field1_scheduled;
GstBuffer *field0_buffer, *field1_buffer;
CaptionData caption_data;
field0_scheduled = gst_queue_array_pop_head_struct (self->scheduled[0]);
field1_scheduled = gst_queue_array_pop_head_struct (self->scheduled[1]);
if (drain && !field0_scheduled && !field1_scheduled) {
return;
}
if (field0_scheduled) {
field0_buffer = field0_scheduled->buffer;
} else {
field0_buffer = make_padding (self, tc, 0);
}
if (field1_scheduled) {
field1_buffer = field1_scheduled->buffer;
} else {
field1_buffer = make_padding (self, tc, 1);
}
caption_data.caption_type = self->caption_type;
caption_data.buffer = gst_buffer_append (field0_buffer, field1_buffer);
g_array_append_val (self->current_frame_captions, caption_data);
}
static GstFlowReturn
gst_cc_combiner_collect_captions (GstCCCombiner * self, gboolean timeout)
{
@ -858,10 +891,10 @@ gst_cc_combiner_collect_captions (GstCCCombiner * self, gboolean timeout)
if (GST_BUFFER_FLAG_IS_SET (self->current_video_buffer,
GST_VIDEO_BUFFER_FLAG_INTERLACED)) {
if (!GST_VIDEO_BUFFER_IS_BOTTOM_FIELD (self->current_video_buffer)) {
dequeue_caption (self, tc, 0, caption_pad_is_eos);
dequeue_caption_one_field (self, tc, 0, caption_pad_is_eos);
}
} else {
dequeue_caption (self, tc, 0, caption_pad_is_eos);
dequeue_caption_one_field (self, tc, 0, caption_pad_is_eos);
}
break;
}
@ -869,33 +902,32 @@ gst_cc_combiner_collect_captions (GstCCCombiner * self, gboolean timeout)
case GST_VIDEO_CAPTION_TYPE_CEA608_S334_1A:
{
if (self->progressive) {
dequeue_caption (self, tc, 0, caption_pad_is_eos);
dequeue_caption_one_field (self, tc, 0, caption_pad_is_eos);
} else if (GST_BUFFER_FLAG_IS_SET (self->current_video_buffer,
GST_VIDEO_BUFFER_FLAG_INTERLACED) &&
GST_BUFFER_FLAG_IS_SET (self->current_video_buffer,
GST_VIDEO_BUFFER_FLAG_ONEFIELD)) {
if (GST_VIDEO_BUFFER_IS_TOP_FIELD (self->current_video_buffer)) {
dequeue_caption (self, tc, 0, caption_pad_is_eos);
dequeue_caption_one_field (self, tc, 0, caption_pad_is_eos);
} else {
dequeue_caption (self, tc, 1, caption_pad_is_eos);
dequeue_caption_one_field (self, tc, 1, caption_pad_is_eos);
}
} else {
dequeue_caption (self, tc, 0, caption_pad_is_eos);
dequeue_caption (self, tc, 1, caption_pad_is_eos);
dequeue_caption_both_fields (self, tc, caption_pad_is_eos);
}
break;
}
case GST_VIDEO_CAPTION_TYPE_CEA608_RAW:
{
if (self->progressive) {
dequeue_caption (self, tc, 0, caption_pad_is_eos);
dequeue_caption_one_field (self, tc, 0, caption_pad_is_eos);
} else if (GST_BUFFER_FLAG_IS_SET (self->current_video_buffer,
GST_VIDEO_BUFFER_FLAG_INTERLACED)) {
if (!GST_VIDEO_BUFFER_IS_BOTTOM_FIELD (self->current_video_buffer)) {
dequeue_caption (self, tc, 0, caption_pad_is_eos);
dequeue_caption_one_field (self, tc, 0, caption_pad_is_eos);
}
} else {
dequeue_caption (self, tc, 0, caption_pad_is_eos);
dequeue_caption_one_field (self, tc, 0, caption_pad_is_eos);
}
break;
}