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| author | Scott Theisen <scott.the.elm@gmail.com> | 2024-12-18 16:59:53 -0500 |
|---|---|---|
| committer | Zhao Zhili <zhilizhao@tencent.com> | 2024-12-23 16:16:16 +0800 |
| commit | 9da1d2e66ab1ac9dcfaa290bbea78b2a4900ac0a (patch) | |
| tree | ab25f99ae855f1d5bade9a5ab0cbd0bb2ce74538 | |
| parent | 1b8cd00da62617bf5e8f2cdac67d99ea6e34404f (diff) | |
| download | ffmpeg-9da1d2e66ab1ac9dcfaa290bbea78b2a4900ac0a.tar.gz | |
libavcodec/v4l2_buffers.c: set AVFrame interlaced flags
Originally from:
https://github.com/MythTV/mythtv/commit/669955c6cb29196b4b5120451b5b998d67a65749
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
| -rw-r--r-- | libavcodec/v4l2_buffers.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libavcodec/v4l2_buffers.c b/libavcodec/v4l2_buffers.c index aba9cfad83..7f597a424a 100644 --- a/libavcodec/v4l2_buffers.c +++ b/libavcodec/v4l2_buffers.c @@ -210,6 +210,23 @@ 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 = 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 +451,7 @@ 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; |