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Then lat work can get the same vb2 buffer directly next time. Signed-off-by: Yunfei Dong --- .../mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h | 2 ++ .../vcodec/decoder/mtk_vcodec_dec_stateless.c | 11 ++++++++--- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_= drv.h b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h index 1fabe8c5b7a4..0817be73f8e0 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h +++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h @@ -155,6 +155,7 @@ struct mtk_vcodec_dec_pdata { * @last_decoded_picinfo: pic information get from latest decode * @empty_flush_buf: a fake size-0 capture buffer that indicates flush. Us= ed * for stateful decoder. + * @last_vb2_v4l2_src: the backup of current source buffer. * @is_flushing: set to true if flushing is in progress. * * @current_codec: current set input codec, in V4L2 pixel format @@ -201,6 +202,7 @@ struct mtk_vcodec_dec_ctx { struct work_struct decode_work; struct vdec_pic_info last_decoded_picinfo; struct v4l2_m2m_buffer empty_flush_buf; + struct vb2_v4l2_buffer *last_vb2_v4l2_src; bool is_flushing; =20 u32 current_codec; diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_= stateless.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec= _stateless.c index 2a7e4fe24ed3..8aa379872ddc 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_statele= ss.c +++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_statele= ss.c @@ -320,7 +320,7 @@ static void mtk_vdec_worker(struct work_struct *work) struct mtk_vcodec_dec_ctx *ctx =3D container_of(work, struct mtk_vcodec_dec_ctx, decode_work); struct mtk_vcodec_dec_dev *dev =3D ctx->dev; - struct vb2_v4l2_buffer *vb2_v4l2_src; + struct vb2_v4l2_buffer *vb2_v4l2_src =3D ctx->last_vb2_v4l2_src; struct vb2_buffer *vb2_src; struct mtk_vcodec_mem *bs_src; struct mtk_video_dec_buf *dec_buf_src; @@ -329,7 +329,7 @@ static void mtk_vdec_worker(struct work_struct *work) bool res_chg =3D false; int ret; =20 - vb2_v4l2_src =3D v4l2_m2m_next_src_buf(ctx->m2m_ctx); + vb2_v4l2_src =3D vb2_v4l2_src ? vb2_v4l2_src : v4l2_m2m_next_src_buf(ctx-= >m2m_ctx); if (!vb2_v4l2_src) { v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx); mtk_v4l2_vdec_dbg(1, ctx, "[%d] no available source buffer", ctx->id); @@ -383,8 +383,13 @@ static void mtk_vdec_worker(struct work_struct *work) v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl); v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx, state); } else { - if (ret !=3D -EAGAIN) + if (ret !=3D -EAGAIN) { v4l2_m2m_src_buf_remove(ctx->m2m_ctx); + ctx->last_vb2_v4l2_src =3D NULL; + } else { + ctx->last_vb2_v4l2_src =3D vb2_v4l2_src; + } + v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx); } } --=20 2.18.0