hi
> -Original Message-
> From: ffmpeg-devel [mailto:ffmpeg-devel-boun...@ffmpeg.org] On Behalf Of
> Aman Gupta
> Sent: Tuesday, September 03, 2019 9:02 AM
> To: ffmpeg-devel@ffmpeg.org
> Cc: loru...@gmail.com; Aman Gupta ;
> jorge.ramirez.or...@gmail.com; Aman Gupta
> Subject: [FFmpeg-devel] [PATCH 04/25] avcodec/v4l2_m2m_enc: add support
> for -force_key_frames
>
> From: Aman Gupta
>
> Signed-off-by: Aman Gupta
> ---
> libavcodec/v4l2_m2m_enc.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/libavcodec/v4l2_m2m_enc.c b/libavcodec/v4l2_m2m_enc.c
> index 27bb254fc1..a0d5bcf760 100644
> --- a/libavcodec/v4l2_m2m_enc.c
> +++ b/libavcodec/v4l2_m2m_enc.c
> @@ -245,6 +245,9 @@ static int v4l2_send_frame(AVCodecContext *avctx,
> const AVFrame *frame)
> V4L2m2mContext *s = ((V4L2m2mPriv*)avctx->priv_data)->context;
> V4L2Context *const output = >output;
>
> +if (frame && frame->pict_type == AV_PICTURE_TYPE_I)
> +v4l2_set_ext_ctrl(s, MPEG_CID(FORCE_KEY_FRAME), 0, "force key
> frame");
> +
looks that a version check is needed here. seems that this macro is introduced
by https://patchwork.kernel.org/patch/8058501/.
There is build error on my machine after I rebase master.
src/libavcodec/v4l2_m2m_enc.c: In function ‘v4l2_set_ext_ctrl’:
src/libavcodec/v4l2_m2m_enc.c:51:12: warning: braces around scalar initializer
struct v4l2_ext_controls ctrls = { { 0 } };
^
src/libavcodec/v4l2_m2m_enc.c:51:12: note: (near initialization for
‘ctrls.ctrl_class’)
src/libavcodec/v4l2_m2m_enc.c: In function ‘v4l2_get_ext_ctrl’:
src/libavcodec/v4l2_m2m_enc.c:71:12: warning: braces around scalar initializer
struct v4l2_ext_controls ctrls = { { 0 } };
^
src/libavcodec/v4l2_m2m_enc.c:71:12: note: (near initialization for
‘ctrls.ctrl_class’)
src/libavcodec/v4l2_m2m_enc.c: In function ‘v4l2_send_frame’:
src/libavcodec/v4l2_m2m_enc.c:34:21: error:
‘V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME’ undeclared (first use in this function)
#define MPEG_CID(x) V4L2_CID_MPEG_VIDEO_##x
^
src/libavcodec/v4l2_m2m_enc.c:249:30: note: in expansion of macro ‘MPEG_CID’
v4l2_set_ext_ctrl(s, MPEG_CID(FORCE_KEY_FRAME), 0, "force key frame");
^
src/libavcodec/v4l2_m2m_enc.c:34:21: note: each undeclared identifier is
reported only once for each function it appears in
#define MPEG_CID(x) V4L2_CID_MPEG_VIDEO_##x
^
src/libavcodec/v4l2_m2m_enc.c:249:30: note: in expansion of macro ‘MPEG_CID’
v4l2_set_ext_ctrl(s, MPEG_CID(FORCE_KEY_FRAME), 0, "force key frame");
^
src/ffbuild/common.mak:59: recipe for target 'libavcodec/v4l2_m2m_enc.o' failed
make: *** [libavcodec/v4l2_m2m_enc.o] Error 1
make: *** Waiting for unfinished jobs
> return ff_v4l2_context_enqueue_frame(output, frame);
> }
>
> --
> 2.20.1
>
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