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SubjectRe: [PATCH v3 1/3] media: hantro: Cleanup format negotiation helpers
On Wed, 13 Nov 2019 14:56:01 -0300
Ezequiel Garcia <ezequiel@collabora.com> wrote:

> Format negotiation helpers, hantro_find_format()
> and hantro_get_default_fmt() can be simplified,
> making the code a little bit clearer.
>
> More importantly, this change is preparation work
> for the post-processor usage.
>
> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>

> ---
> drivers/staging/media/hantro/hantro_v4l2.c | 53 ++++++++--------------
> 1 file changed, 20 insertions(+), 33 deletions(-)
>
> diff --git a/drivers/staging/media/hantro/hantro_v4l2.c b/drivers/staging/media/hantro/hantro_v4l2.c
> index 3dae52abb96c..238e53b28f8f 100644
> --- a/drivers/staging/media/hantro/hantro_v4l2.c
> +++ b/drivers/staging/media/hantro/hantro_v4l2.c
> @@ -47,23 +47,26 @@ hantro_get_formats(const struct hantro_ctx *ctx, unsigned int *num_fmts)
> }
>
> static const struct hantro_fmt *
> -hantro_find_format(const struct hantro_fmt *formats, unsigned int num_fmts,
> - u32 fourcc)
> +hantro_find_format(const struct hantro_ctx *ctx, u32 fourcc)
> {
> - unsigned int i;
> + const struct hantro_fmt *formats;
> + unsigned int i, num_fmts;
>
> + formats = hantro_get_formats(ctx, &num_fmts);
> for (i = 0; i < num_fmts; i++)
> if (formats[i].fourcc == fourcc)
> return &formats[i];
> +
> return NULL;
> }
>
> static const struct hantro_fmt *
> -hantro_get_default_fmt(const struct hantro_fmt *formats, unsigned int num_fmts,
> - bool bitstream)
> +hantro_get_default_fmt(const struct hantro_ctx *ctx, bool bitstream)
> {
> - unsigned int i;
> + const struct hantro_fmt *formats;
> + unsigned int i, num_fmts;
>
> + formats = hantro_get_formats(ctx, &num_fmts);
> for (i = 0; i < num_fmts; i++) {
> if (bitstream == (formats[i].codec_mode !=
> HANTRO_MODE_NONE))
> @@ -89,8 +92,7 @@ static int vidioc_enum_framesizes(struct file *file, void *priv,
> struct v4l2_frmsizeenum *fsize)
> {
> struct hantro_ctx *ctx = fh_to_ctx(priv);
> - const struct hantro_fmt *formats, *fmt;
> - unsigned int num_fmts;
> + const struct hantro_fmt *fmt;
>
> if (fsize->index != 0) {
> vpu_debug(0, "invalid frame size index (expected 0, got %d)\n",
> @@ -98,8 +100,7 @@ static int vidioc_enum_framesizes(struct file *file, void *priv,
> return -EINVAL;
> }
>
> - formats = hantro_get_formats(ctx, &num_fmts);
> - fmt = hantro_find_format(formats, num_fmts, fsize->pixel_format);
> + fmt = hantro_find_format(ctx, fsize->pixel_format);
> if (!fmt) {
> vpu_debug(0, "unsupported bitstream format (%08x)\n",
> fsize->pixel_format);
> @@ -196,8 +197,7 @@ static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f,
> {
> struct hantro_ctx *ctx = fh_to_ctx(priv);
> struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> - const struct hantro_fmt *formats, *fmt, *vpu_fmt;
> - unsigned int num_fmts;
> + const struct hantro_fmt *fmt, *vpu_fmt;
> bool coded;
>
> coded = capture == hantro_is_encoder_ctx(ctx);
> @@ -208,10 +208,9 @@ static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f,
> (pix_mp->pixelformat >> 16) & 0x7f,
> (pix_mp->pixelformat >> 24) & 0x7f);
>
> - formats = hantro_get_formats(ctx, &num_fmts);
> - fmt = hantro_find_format(formats, num_fmts, pix_mp->pixelformat);
> + fmt = hantro_find_format(ctx, pix_mp->pixelformat);
> if (!fmt) {
> - fmt = hantro_get_default_fmt(formats, num_fmts, coded);
> + fmt = hantro_get_default_fmt(ctx, coded);
> f->fmt.pix_mp.pixelformat = fmt->fourcc;
> }
>
> @@ -290,12 +289,10 @@ hantro_reset_fmt(struct v4l2_pix_format_mplane *fmt,
> static void
> hantro_reset_encoded_fmt(struct hantro_ctx *ctx)
> {
> - const struct hantro_fmt *vpu_fmt, *formats;
> + const struct hantro_fmt *vpu_fmt;
> struct v4l2_pix_format_mplane *fmt;
> - unsigned int num_fmts;
>
> - formats = hantro_get_formats(ctx, &num_fmts);
> - vpu_fmt = hantro_get_default_fmt(formats, num_fmts, true);
> + vpu_fmt = hantro_get_default_fmt(ctx, true);
>
> if (hantro_is_encoder_ctx(ctx)) {
> ctx->vpu_dst_fmt = vpu_fmt;
> @@ -316,12 +313,10 @@ hantro_reset_encoded_fmt(struct hantro_ctx *ctx)
> static void
> hantro_reset_raw_fmt(struct hantro_ctx *ctx)
> {
> - const struct hantro_fmt *raw_vpu_fmt, *formats;
> + const struct hantro_fmt *raw_vpu_fmt;
> struct v4l2_pix_format_mplane *raw_fmt, *encoded_fmt;
> - unsigned int num_fmts;
>
> - formats = hantro_get_formats(ctx, &num_fmts);
> - raw_vpu_fmt = hantro_get_default_fmt(formats, num_fmts, false);
> + raw_vpu_fmt = hantro_get_default_fmt(ctx, false);
>
> if (hantro_is_encoder_ctx(ctx)) {
> ctx->vpu_src_fmt = raw_vpu_fmt;
> @@ -367,8 +362,6 @@ vidioc_s_fmt_out_mplane(struct file *file, void *priv, struct v4l2_format *f)
> {
> struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> struct hantro_ctx *ctx = fh_to_ctx(priv);
> - const struct hantro_fmt *formats;
> - unsigned int num_fmts;
> struct vb2_queue *vq;
> int ret;
>
> @@ -395,9 +388,7 @@ vidioc_s_fmt_out_mplane(struct file *file, void *priv, struct v4l2_format *f)
> if (ret)
> return ret;
>
> - formats = hantro_get_formats(ctx, &num_fmts);
> - ctx->vpu_src_fmt = hantro_find_format(formats, num_fmts,
> - pix_mp->pixelformat);
> + ctx->vpu_src_fmt = hantro_find_format(ctx, pix_mp->pixelformat);
> ctx->src_fmt = *pix_mp;
>
> /*
> @@ -431,9 +422,7 @@ static int vidioc_s_fmt_cap_mplane(struct file *file, void *priv,
> {
> struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> struct hantro_ctx *ctx = fh_to_ctx(priv);
> - const struct hantro_fmt *formats;
> struct vb2_queue *vq;
> - unsigned int num_fmts;
> int ret;
>
> /* Change not allowed if queue is busy. */
> @@ -462,9 +451,7 @@ static int vidioc_s_fmt_cap_mplane(struct file *file, void *priv,
> if (ret)
> return ret;
>
> - formats = hantro_get_formats(ctx, &num_fmts);
> - ctx->vpu_dst_fmt = hantro_find_format(formats, num_fmts,
> - pix_mp->pixelformat);
> + ctx->vpu_dst_fmt = hantro_find_format(ctx, pix_mp->pixelformat);
> ctx->dst_fmt = *pix_mp;
>
> /*

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