On 12/15/24 22:25, James Almer wrote:
On 12/15/2024 1:14 AM, Scott Theisen wrote:
Originally from:
https://github.com/MythTV/mythtv/commit/669955c6cb29196b4b5120451b5b998d67a65749
---
libavcodec/v4l2_buffers.c | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/libavcodec/v4l2_buffers.c b/libavcodec/v4l2_buffers.c
index 23474ee143..56a8f0825c 100644
--- a/libavcodec/v4l2_buffers.c
+++ b/libavcodec/v4l2_buffers.c
@@ -210,6 +210,43 @@ static enum AVColorTransferCharacteristic
v4l2_get_color_trc(V4L2Buffer *buf)
return AVCOL_TRC_UNSPECIFIED;
}
+static void v4l2_get_interlacing(AVFrame *frame, V4L2Buffer *buf)
+{
+ enum v4l2_field field;
+ field = V4L2_TYPE_IS_MULTIPLANAR(buf->buf.type) ?
+ buf->context->format.fmt.pix_mp.field :
+ buf->context->format.fmt.pix.field;
+
+ if (field == V4L2_FIELD_INTERLACED || field ==
V4L2_FIELD_INTERLACED_TB) {
+ frame->flags |= AV_FRAME_FLAG_INTERLACED;
+ frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
+#if FF_API_INTERLACED_FRAME
+FF_DISABLE_DEPRECATION_WARNINGS
+ frame->interlaced_frame = 1;
+ frame->top_field_first = 1;
No need to set these two fields. It's done by the generic code.
OK, I'll remove those lines. Although it is not clear to me when those
will be set after libavcodec/pthread_frame.c calls
ff_decode_receive_frame_internal().
Regards,
Scott Theisen
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