[PATCH hwc v2 5/6] drm_hwcomposer: Add GetCrtcCount function

[Sean Paul]

On Wed, Sep 27, 2017 at 7:58 AM, Robert Foss <robert.foss at collabora.com> wrote:
> This GetCrtrcCount helper functions enables convenient
> fetching of the number of Crtcs from DrmResources.
>
> Signed-off-by: Robert Foss <robert.foss at collabora.com>
> ---
>  drmresources.cpp | 4 ++++
>  drmresources.h   | 1 +
>  2 files changed, 5 insertions(+)
>
> diff --git a/drmresources.cpp b/drmresources.cpp
> index 762f5ef..0578cc6 100644
> --- a/drmresources.cpp
> +++ b/drmresources.cpp
> @@ -241,6 +241,10 @@ DrmPlane *DrmResources::GetPlane(uint32_t id) const {
>    return NULL;
>  }
>
> +uint32_t DrmResources::GetCrtcCount() const {
> +  return (uint32_t) crtcs_.size();
> +}

The "blessed" way of doing this would be to add a new function

const std::vector<std::unique_ptr<DrmCrtc>> &crtcs() const {
  return crtcs_;
}

and then use crtcs()->size() wherever needed.



> +
>  uint32_t DrmResources::next_mode_id() {
>    return ++mode_id_;
>  }
> diff --git a/drmresources.h b/drmresources.h
> index a2d8d16..0cc2456 100644
> --- a/drmresources.h
> +++ b/drmresources.h
> @@ -66,6 +66,7 @@ class DrmResources {
>    int GetConnectorProperty(const DrmConnector &connector, const char *prop_name,
>                             DrmProperty *property);
>
> +  uint32_t GetCrtcCount() const;
>    uint32_t next_mode_id();
>
>    int CreatePropertyBlob(void *data, size_t length, uint32_t *blob_id);
> --
> 2.11.0
>