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SubjectRe: [PATCH,v1] media: mtk-vcodec: fix vp9 content playback error with show exist frame
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Dear Hans, all,

Could you please help to review this patch?

This is a fix about vp9 show_existing_frames.

Sincerely thanks,
BR

On Mon, 2019-04-01 at 16:18 +0800, maoguang.meng@mediatek.com wrote:
> From: Maoguang Meng <maoguang.meng@mediatek.com>
>
> Update referenced frame buffer's reference count when playing vp9
> content which has show_existing_frame flag, and copy enough buffer
> data to current shown frame.
>
> Signed-off-by: Maoguang Meng <maoguang.meng@mediatek.com>
> ---
> .../media/platform/mtk-vcodec/vdec/vdec_vp9_if.c | 16 +++++++---------
> 1 file changed, 7 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c
> index bc8349b..d950837 100644
> --- a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c
> +++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c
> @@ -481,15 +481,15 @@ static void vp9_swap_frm_bufs(struct vdec_vp9_inst *inst)
> */
> if ((frm_to_show->fb != NULL) &&
> (inst->cur_fb->base_y.size >=
> - frm_to_show->fb->base_y.size)) {
> + frm_to_show->fb->base_y.size) &&
> + (inst->cur_fb->base_c.size >=
> + frm_to_show->fb->base_c.size)) {
> memcpy((void *)inst->cur_fb->base_y.va,
> (void *)frm_to_show->fb->base_y.va,
> - vsi->buf_w *
> - vsi->buf_h);
> + frm_to_show->fb->base_y.size);
> memcpy((void *)inst->cur_fb->base_c.va,
> (void *)frm_to_show->fb->base_c.va,
> - vsi->buf_w *
> - vsi->buf_h / 2);
> + frm_to_show->fb->base_c.size);
> } else {
> /* After resolution change case, current CAPTURE buffer
> * may have less buffer size than frm_to_show buffer
> @@ -895,7 +895,7 @@ static int vdec_vp9_decode(unsigned long h_vdec, struct mtk_vcodec_mem *bs,
>
> if (vsi->resolution_changed) {
> if (!vp9_alloc_work_buf(inst)) {
> - ret = -EINVAL;
> + ret = -EIO;
> goto DECODE_ERROR;
> }
> }
> @@ -924,14 +924,12 @@ static int vdec_vp9_decode(unsigned long h_vdec, struct mtk_vcodec_mem *bs,
>
> if (vsi->show_existing_frame && (vsi->frm_to_show_idx <
> VP9_MAX_FRM_BUF_NUM)) {
> - mtk_vcodec_err(inst,
> + mtk_vcodec_debug(inst,
> "Skip Decode drv->new_fb_idx=%d, drv->frm_to_show_idx=%d",
> vsi->new_fb_idx, vsi->frm_to_show_idx);
>
> vp9_ref_cnt_fb(inst, &vsi->new_fb_idx,
> vsi->frm_to_show_idx);
> - ret = -EINVAL;
> - goto DECODE_ERROR;
> }
>
> /* VPU assign the buffer pointer in its address space,


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