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avcodec/v4l2_buffers: Add handling for NV21 and YUV420P

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The single planar support was for NV12 only.
Add NV21 and YUV420P support.

Signed-off-by: Aman Gupta <aman@tmm1.net>
This commit is contained in:
Dave Stevenson 2018-03-22 16:01:35 +00:00 committed by Aman Gupta
parent 7bb6898b16
commit d61cf1b1eb
1 changed files with 9 additions and 0 deletions
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9
libavcodec/v4l2_buffers.c
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@ -321,11 +321,20 @@ int ff_v4l2_buffer_buf_to_avframe(AVFrame *frame, V4L2Buffer *avbuf)
/* 1.1 fixup special cases */
switch (avbuf->context->av_pix_fmt) {
case AV_PIX_FMT_NV12:
case AV_PIX_FMT_NV21:
if (avbuf->num_planes > 1)
break;
frame->linesize[1] = avbuf->plane_info[0].bytesperline;
frame->data[1] = frame->buf[0]->data + avbuf->plane_info[0].bytesperline * avbuf->context->format.fmt.pix_mp.height;
break;
case AV_PIX_FMT_YUV420P:
if (avbuf->num_planes > 1)
break;
frame->linesize[1] = avbuf->plane_info[0].bytesperline >> 1;
frame->linesize[2] = avbuf->plane_info[0].bytesperline >> 1;
frame->data[1] = frame->buf[0]->data + avbuf->plane_info[0].bytesperline * avbuf->context->format.fmt.pix_mp.height;
frame->data[2] = frame->data[1] + ((avbuf->plane_info[0].bytesperline * avbuf->context->format.fmt.pix_mp.height) >> 2);
break;
default:
break;
}