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deinterlace2: Implement support for RFF and ONEFIELD buffer flags

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This commit is contained in:
Sebastian Dröge 2009-04-16 15:52:39 +02:00
parent e01373662a
commit ffaef58b59
1 changed files with 54 additions and 22 deletions
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76
gst/deinterlace2/gstdeinterlace2.c
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@ -688,51 +688,83 @@ gst_deinterlace2_push_history (GstDeinterlace2 * self, GstBuffer * buffer)
int i = 1;
GstClockTime timestamp;
GstDeinterlace2FieldLayout field_layout = self->field_layout;
gboolean repeated = GST_BUFFER_FLAG_IS_SET (buffer, GST_VIDEO_BUFFER_RFF);
gboolean tff = GST_BUFFER_FLAG_IS_SET (buffer, GST_VIDEO_BUFFER_TFF);
gboolean onefield =
GST_BUFFER_FLAG_IS_SET (buffer, GST_VIDEO_BUFFER_ONEFIELD);
GstBuffer *field1, *field2;
guint fields_to_push = (onefield) ? 1 : (!repeated) ? 2 : 3;
gint field1_flags, field2_flags;
g_assert (self->history_count < MAX_FIELD_HISTORY - 2);
g_assert (self->history_count < MAX_FIELD_HISTORY - fields_to_push);
for (i = MAX_FIELD_HISTORY - 1; i >= 2; i--) {
self->field_history[i].buf = self->field_history[i - 2].buf;
self->field_history[i].flags = self->field_history[i - 2].flags;
for (i = MAX_FIELD_HISTORY - 1; i >= fields_to_push; i--) {
self->field_history[i].buf = self->field_history[i - fields_to_push].buf;
self->field_history[i].flags =
self->field_history[i - fields_to_push].flags;
}
if (field_layout == GST_DEINTERLACE2_LAYOUT_AUTO) {
if (!self->interlaced
|| GST_BUFFER_FLAG_IS_SET (buffer, GST_VIDEO_BUFFER_TFF))
if (!self->interlaced) {
GST_WARNING_OBJECT (self, "Can't detect field layout -- assuming TFF");
field_layout = GST_DEINTERLACE2_LAYOUT_TFF;
else
} else if (tff) {
field_layout = GST_DEINTERLACE2_LAYOUT_TFF;
} else {
field_layout = GST_DEINTERLACE2_LAYOUT_BFF;
}
}
if (field_layout == GST_DEINTERLACE2_LAYOUT_TFF) {
GST_DEBUG ("Top field first");
self->field_history[0].buf =
gst_buffer_create_sub (buffer, self->line_length,
field1 = gst_buffer_ref (buffer);
field1_flags = PICTURE_INTERLACED_TOP;
field2 = gst_buffer_create_sub (buffer, self->line_length,
GST_BUFFER_SIZE (buffer) - self->line_length);
self->field_history[0].flags = PICTURE_INTERLACED_BOTTOM;
self->field_history[1].buf = buffer;
self->field_history[1].flags = PICTURE_INTERLACED_TOP;
field2_flags = PICTURE_INTERLACED_BOTTOM;
} else {
GST_DEBUG ("Bottom field first");
self->field_history[0].buf = buffer;
self->field_history[0].flags = PICTURE_INTERLACED_TOP;
self->field_history[1].buf =
gst_buffer_create_sub (buffer, self->line_length,
field1 = gst_buffer_create_sub (buffer, self->line_length,
GST_BUFFER_SIZE (buffer) - self->line_length);
self->field_history[1].flags = PICTURE_INTERLACED_BOTTOM;
field1_flags = PICTURE_INTERLACED_BOTTOM;
field2 = gst_buffer_ref (buffer);
field2_flags = PICTURE_INTERLACED_TOP;
}
/* Timestamps are assigned to the field buffers under the assumption that
the timestamp of the buffer equals the first fields timestamp */
timestamp = GST_BUFFER_TIMESTAMP (buffer);
GST_BUFFER_TIMESTAMP (self->field_history[0].buf) =
timestamp + self->field_duration;
GST_BUFFER_TIMESTAMP (self->field_history[1].buf) = timestamp;
if (repeated) {
GST_BUFFER_TIMESTAMP (field1) = timestamp;
GST_BUFFER_TIMESTAMP (field2) = timestamp + 2 * self->field_duration;
} else {
GST_BUFFER_TIMESTAMP (field1) = timestamp;
GST_BUFFER_TIMESTAMP (field2) = timestamp + self->field_duration;
}
self->history_count += 2;
if (repeated) {
self->field_history[0].buf = field2;
self->field_history[0].flags = field2_flags;
self->field_history[1].buf = gst_buffer_ref (field1);
self->field_history[1].flags = field1_flags;
self->field_history[2].buf = field1;
self->field_history[2].flags = field1_flags;
} else if (!onefield) {
self->field_history[0].buf = field2;
self->field_history[0].flags = field2_flags;
self->field_history[1].buf = field1;
self->field_history[1].flags = field1_flags;
} else { /* onefield */
self->field_history[0].buf = field1;
self->field_history[0].flags = field1_flags;
gst_buffer_unref (field2);
}
self->history_count += fields_to_push;
GST_DEBUG ("push, size(history): %d", self->history_count);
gst_buffer_unref (buffer);
}
static GstFlowReturn