> On Dec 19, 2024, at 08:28, James Almer <jamr...@gmail.com> wrote: > > On 12/18/2024 6:59 PM, Scott Theisen wrote: >> Originally from: >> https://github.com/MythTV/mythtv/commit/669955c6cb29196b4b5120451b5b998d67a65749 >> --- >> v3: >> remove unnecessary clearing of already 0 valued flags >> use switch-case; I don't really think it is any simpler, but I do like the >> format better. >> --- >> libavcodec/v4l2_buffers.c | 19 +++++++++++++++++++ >> 1 file changed, 19 insertions(+) >> diff --git a/libavcodec/v4l2_buffers.c b/libavcodec/v4l2_buffers.c >> index 23474ee143..19cc86334b 100644 >> --- a/libavcodec/v4l2_buffers.c >> +++ b/libavcodec/v4l2_buffers.c >> @@ -210,6 +210,24 @@ 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; >> + >> + switch (field) { >> + case V4L2_FIELD_INTERLACED: >> + case V4L2_FIELD_INTERLACED_TB: >> + frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST; >> + /* fallthrough */ >> + case V4L2_FIELD_INTERLACED_BT: >> + frame->flags |= AV_FRAME_FLAG_INTERLACED; >> + break; >> + } >> +} >> + >> static void v4l2_free_buffer(void *opaque, uint8_t *unused) >> { >> V4L2Buffer* avbuf = opaque; >> @@ -434,6 +452,7 @@ int ff_v4l2_buffer_buf_to_avframe(AVFrame *frame, >> V4L2Buffer *avbuf) >> frame->color_trc = v4l2_get_color_trc(avbuf); >> frame->pts = v4l2_get_pts(avbuf); >> frame->pkt_dts = AV_NOPTS_VALUE; >> + v4l2_get_interlacing(frame, avbuf); >> /* these values are updated also during re-init in >> v4l2_process_driver_event */ >> frame->height = avbuf->context->height; > > Should be ok, but i don't maintain (nor can test) v4l2. So if nobody reviews > it or pushes it in a few days, I'll.
I’m planing to do some test, maybe this weekend. > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
