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SubjectRe: [PATCH v2 27/29] venus: implementing multi-stream support
On Tue, May 15, 2018 at 5:00 PM Stanimir Varbanov
<stanimir.varbanov@linaro.org> wrote:
>
> This is implementing a multi-stream decoder support. The multi
> stream gives an option to use the secondary decoder output
> with different raw format (or the same in case of crop).
>
> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
> ---
> drivers/media/platform/qcom/venus/core.h | 1 +
> drivers/media/platform/qcom/venus/helpers.c | 204 +++++++++++++++++++++++++++-
> drivers/media/platform/qcom/venus/helpers.h | 6 +
> drivers/media/platform/qcom/venus/vdec.c | 91 ++++++++++++-
> drivers/media/platform/qcom/venus/venc.c | 1 +
> 5 files changed, 299 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 4d6c05f156c4..85e66e2dd672 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -259,6 +259,7 @@ struct venus_inst {
> struct list_head list;
> struct mutex lock;
> struct venus_core *core;
> + struct list_head dpbbufs;
> struct list_head internalbufs;
> struct list_head registeredbufs;
> struct list_head delayed_process;
> diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
> index ed569705ecac..87dcf9973e6f 100644
> --- a/drivers/media/platform/qcom/venus/helpers.c
> +++ b/drivers/media/platform/qcom/venus/helpers.c
> @@ -85,6 +85,112 @@ bool venus_helper_check_codec(struct venus_inst *inst, u32 v4l2_pixfmt)
> }
> EXPORT_SYMBOL_GPL(venus_helper_check_codec);
>
> +static int venus_helper_queue_dpb_bufs(struct venus_inst *inst)
> +{
> + struct intbuf *buf;
> + int ret = 0;
> +
> + if (list_empty(&inst->dpbbufs))
> + return 0;

Does this special case give us anything other than few more source lines?

> +
> + list_for_each_entry(buf, &inst->dpbbufs, list) {
> + struct hfi_frame_data fdata;
> +
> + memset(&fdata, 0, sizeof(fdata));
> + fdata.alloc_len = buf->size;
> + fdata.device_addr = buf->da;
> + fdata.buffer_type = buf->type;
> +
> + ret = hfi_session_process_buf(inst, &fdata);
> + if (ret)
> + goto fail;
> + }
> +
> +fail:
> + return ret;
> +}
> +
> +int venus_helper_free_dpb_bufs(struct venus_inst *inst)
> +{
> + struct intbuf *buf, *n;
> +
> + if (list_empty(&inst->dpbbufs))
> + return 0;

Ditto.

> +
> + list_for_each_entry_safe(buf, n, &inst->dpbbufs, list) {
> + list_del_init(&buf->list);
> + dma_free_attrs(inst->core->dev, buf->size, buf->va, buf->da,
> + buf->attrs);
> + kfree(buf);
> + }
> +
> + INIT_LIST_HEAD(&inst->dpbbufs);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(venus_helper_free_dpb_bufs);
[snip]
> +int venus_helper_get_out_fmts(struct venus_inst *inst, u32 v4l2_fmt,
> + u32 *out_fmt, u32 *out2_fmt, bool ubwc)
> +{
> + struct venus_core *core = inst->core;
> + struct venus_caps *caps;
> + u32 ubwc_fmt, fmt = to_hfi_raw_fmt(v4l2_fmt);
> + bool found, found_ubwc;
> +
> + *out_fmt = *out2_fmt = 0;
> +
> + if (!fmt)
> + return -EINVAL;
> +
> + caps = venus_caps_by_codec(core, inst->hfi_codec, inst->session_type);
> + if (!caps)
> + return -EINVAL;
> +
> + if (ubwc) {
> + ubwc_fmt = fmt | HFI_COLOR_FORMAT_UBWC_BASE;

Does the UBWC base format have to be the same as fmt? Looking at
HFI_COLOR_FORMAT_* macros, UBWC variants seem to exist only for few
selected raw formats, for example there is none for NV21.

Best regards,
Tomasz

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