Re: [PATCH v5 11/14] media: mtk-vcodec: vdec: support stateless H.264 decoding

[Tzung-Bi Shih]

On Wed, May 19, 2021 at 10:31 PM Alexandre Courbot
<acourbot@xxxxxxxxxxxx> wrote:
> +#include "../vdec_drv_if.h"
> +#include "../mtk_vcodec_util.h"
> +#include "../mtk_vcodec_dec.h"
> +#include "../mtk_vcodec_intr.h"
> +#include "../vdec_vpu_if.h"
> +#include "../vdec_drv_base.h"

Would be good practice to sort them.

> +static int allocate_predication_buf(struct vdec_h264_slice_inst *inst)
> +{
> +       int err = 0;

No need to initialize.  It will be overridden soon.

> +static void free_predication_buf(struct vdec_h264_slice_inst *inst)
> +{
> +       struct mtk_vcodec_mem *mem = NULL;
> +
> +       mtk_vcodec_debug_enter(inst);
> +
> +       inst->vsi_ctx.pred_buf_dma = 0;
> +       mem = &inst->pred_buf;

Is it possible to inline to the variable declaration?  Or mem no need
to initialize.

> +static int alloc_mv_buf(struct vdec_h264_slice_inst *inst,
> +       struct vdec_pic_info *pic)
> +{
> +       int i;
> +       int err;
> +       struct mtk_vcodec_mem *mem = NULL;

No need to initialize.  It will be overridden soon.

> +static void free_mv_buf(struct vdec_h264_slice_inst *inst)
> +{
> +       int i;
> +       struct mtk_vcodec_mem *mem = NULL;

No need to initialize.  It will be overridden soon.

> +static int vdec_h264_slice_init(struct mtk_vcodec_ctx *ctx)
> +{
> +       struct vdec_h264_slice_inst *inst = NULL;

No need to initialize.  It will be overridden soon.

> +static void vdec_h264_slice_deinit(void *h_vdec)
> +{
> +       struct vdec_h264_slice_inst *inst =
> +               (struct vdec_h264_slice_inst *)h_vdec;

No need to cast from void *.

> +static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
> +                                 struct vdec_fb *fb, bool *res_chg)
> +{
> +       struct vdec_h264_slice_inst *inst =
> +               (struct vdec_h264_slice_inst *)h_vdec;

No need to cast from void *.

> +       const struct v4l2_ctrl_h264_decode_params *dec_params =
> +               get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_DECODE_PARAMS);
> +       struct vdec_vpu_inst *vpu = &inst->vpu;
> +       uint32_t data[2];
> +       uint64_t y_fb_dma;
> +       uint64_t c_fb_dma;
> +       int err;
> +
> +       /* bs NULL means flush decoder */
> +       if (bs == NULL)

To neat, !bs.

> +static int vdec_h264_slice_get_param(void *h_vdec,
> +                              enum vdec_get_param_type type, void *out)
> +{
> +       struct vdec_h264_slice_inst *inst =
> +               (struct vdec_h264_slice_inst *)h_vdec;

No need to cast from void *.