On Wed, Aug 05, 2015 at 04:32:38PM +1000, Peter Hutterer wrote:
> The previous approach to pointer acceleration was to initialize the same
> motion filter behavior but a different acceleration profile depending on the
> hardware (the profile converts a speed to a multiplier for input deltas).
> 
> To be more flexible for hardware-specifics, change this into a set of specific
> pointer acceleration init functions. This patch has no effective functional
> changes, they're still all the same.
> 
> The acceleration functions are kept for direct access by the ptraccel-debug
> tool.
> 
> Signed-off-by: Peter Hutterer <[email protected]>

Reviewed-by: Jonas Ådahl <[email protected]>

> ---
>  src/evdev-mt-touchpad.c | 10 ++++----
>  src/evdev.c             | 18 +++++++-------
>  src/evdev.h             |  2 +-
>  src/filter.c            | 62 
> +++++++++++++++++++++++++++++++++++++++++++++----
>  src/filter.h            | 14 +++++++++--
>  tools/ptraccel-debug.c  |  3 +--
>  6 files changed, 86 insertions(+), 23 deletions(-)
> 
> diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c
> index a683d9a..f48aa26 100644
> --- a/src/evdev-mt-touchpad.c
> +++ b/src/evdev-mt-touchpad.c
> @@ -1510,7 +1510,7 @@ static int
>  tp_init_accel(struct tp_dispatch *tp, double diagonal)
>  {
>       int res_x, res_y;
> -     accel_profile_func_t profile;
> +     struct motion_filter *filter;
>  
>       res_x = tp->device->abs.absinfo_x->resolution;
>       res_y = tp->device->abs.absinfo_y->resolution;
> @@ -1526,14 +1526,14 @@ tp_init_accel(struct tp_dispatch *tp, double diagonal)
>       tp->accel.y_scale_coeff = (DEFAULT_MOUSE_DPI/25.4) / res_y;
>  
>       if (tp->device->model_flags & EVDEV_MODEL_LENOVO_X230)
> -             profile = touchpad_lenovo_x230_accel_profile;
> +             filter = 
> create_pointer_accelerator_filter_lenovo_x230(tp->device->dpi);
>       else
> -             profile = touchpad_accel_profile_linear;
> +             filter = 
> create_pointer_accelerator_filter_touchpad(tp->device->dpi);
>  
> -     if (evdev_device_init_pointer_acceleration(tp->device, profile) == -1)
> +     if (!filter)
>               return -1;
>  
> -     return 0;
> +     return evdev_device_init_pointer_acceleration(tp->device, filter);
>  }
>  
>  static uint32_t
> diff --git a/src/evdev.c b/src/evdev.c
> index 17c2604..bb31724 100644
> --- a/src/evdev.c
> +++ b/src/evdev.c
> @@ -1408,12 +1408,9 @@ evdev_accel_config_get_default_speed(struct 
> libinput_device *device)
>  
>  int
>  evdev_device_init_pointer_acceleration(struct evdev_device *device,
> -                                    accel_profile_func_t profile)
> +                                    struct motion_filter *filter)
>  {
> -     device->pointer.filter = create_pointer_accelerator_filter(profile,
> -                                                                device->dpi);
> -     if (!device->pointer.filter)
> -             return -1;
> +     device->pointer.filter = filter;
>  
>       device->pointer.config.available = evdev_accel_config_available;
>       device->pointer.config.set_speed = evdev_accel_config_set_speed;
> @@ -1862,14 +1859,17 @@ evdev_configure_mt_device(struct evdev_device *device)
>  static inline int
>  evdev_init_accel(struct evdev_device *device)
>  {
> -     accel_profile_func_t profile;
> +     struct motion_filter *filter;
>  
>       if (device->dpi < DEFAULT_MOUSE_DPI)
> -             profile = pointer_accel_profile_linear_low_dpi;
> +             filter = 
> create_pointer_accelerator_filter_linear_low_dpi(device->dpi);
>       else
> -             profile = pointer_accel_profile_linear;
> +             filter = create_pointer_accelerator_filter_linear(device->dpi);
>  
> -     return evdev_device_init_pointer_acceleration(device, profile);
> +     if (!filter)
> +             return -1;
> +
> +     return evdev_device_init_pointer_acceleration(device, filter);
>  }
>  
>  static int
> diff --git a/src/evdev.h b/src/evdev.h
> index be5df0d..42404fc 100644
> --- a/src/evdev.h
> +++ b/src/evdev.h
> @@ -280,7 +280,7 @@ evdev_device_create(struct libinput_seat *seat,
>  
>  int
>  evdev_device_init_pointer_acceleration(struct evdev_device *device,
> -                                    accel_profile_func_t profile);
> +                                    struct motion_filter *filter);
>  
>  struct evdev_dispatch *
>  evdev_touchpad_create(struct evdev_device *device);
> diff --git a/src/filter.c b/src/filter.c
> index bc73d50..828d6b6 100644
> --- a/src/filter.c
> +++ b/src/filter.c
> @@ -549,9 +549,8 @@ struct motion_filter_interface accelerator_interface = {
>       accelerator_set_speed,
>  };
>  
> -struct motion_filter *
> -create_pointer_accelerator_filter(accel_profile_func_t profile,
> -                               int dpi)
> +static struct pointer_accelerator *
> +create_default_filter(int dpi)
>  {
>       struct pointer_accelerator *filter;
>  
> @@ -561,7 +560,6 @@ create_pointer_accelerator_filter(accel_profile_func_t 
> profile,
>  
>       filter->base.interface = &accelerator_interface;
>  
> -     filter->profile = profile;
>       filter->last_velocity = 0.0;
>  
>       filter->trackers =
> @@ -574,5 +572,61 @@ create_pointer_accelerator_filter(accel_profile_func_t 
> profile,
>  
>       filter->dpi_factor = dpi/(double)DEFAULT_MOUSE_DPI;
>  
> +     return filter;
> +}
> +
> +struct motion_filter *
> +create_pointer_accelerator_filter_linear(int dpi)
> +{
> +     struct pointer_accelerator *filter;
> +
> +     filter = create_default_filter(dpi);
> +     if (!filter)
> +             return NULL;
> +
> +     filter->profile = pointer_accel_profile_linear;
> +
> +     return &filter->base;
> +}
> +
> +struct motion_filter *
> +create_pointer_accelerator_filter_linear_low_dpi(int dpi)
> +{
> +     struct pointer_accelerator *filter;
> +
> +     filter = create_default_filter(dpi);
> +     if (!filter)
> +             return NULL;
> +
> +     filter->profile = pointer_accel_profile_linear_low_dpi;
> +
> +     return &filter->base;
> +}
> +
> +struct motion_filter *
> +create_pointer_accelerator_filter_touchpad(int dpi)
> +{
> +     struct pointer_accelerator *filter;
> +
> +     filter = create_default_filter(dpi);
> +     if (!filter)
> +             return NULL;
> +
> +     filter->profile = touchpad_accel_profile_linear;
> +
> +     return &filter->base;
> +}
> +
> +struct motion_filter *
> +create_pointer_accelerator_filter_lenovo_x230(int dpi)
> +{
> +     struct pointer_accelerator *filter;
> +
> +     filter = create_default_filter(dpi);
> +     if (!filter)
> +             return NULL;
> +
> +     filter->profile = touchpad_lenovo_x230_accel_profile;
> +
>       return &filter->base;
>  }
> diff --git a/src/filter.h b/src/filter.h
> index 617fab1..76fc147 100644
> --- a/src/filter.h
> +++ b/src/filter.h
> @@ -57,9 +57,19 @@ typedef double (*accel_profile_func_t)(struct 
> motion_filter *filter,
>                                      double velocity,
>                                      uint64_t time);
>  
> +/* Pointer acceleration types */
> +
>  struct motion_filter *
> -create_pointer_accelerator_filter(accel_profile_func_t filter,
> -                               int dpi);
> +create_pointer_accelerator_filter_linear(int dpi);
> +
> +struct motion_filter *
> +create_pointer_accelerator_filter_linear_low_dpi(int dpi);
> +
> +struct motion_filter *
> +create_pointer_accelerator_filter_touchpad(int dpi);
> +
> +struct motion_filter *
> +create_pointer_accelerator_filter_lenovo_x230(int dpi);
>  
>  /*
>   * Pointer acceleration profiles.
> diff --git a/tools/ptraccel-debug.c b/tools/ptraccel-debug.c
> index b0867db..077da59 100644
> --- a/tools/ptraccel-debug.c
> +++ b/tools/ptraccel-debug.c
> @@ -272,8 +272,7 @@ main(int argc, char **argv)
>               }
>       }
>  
> -     filter = create_pointer_accelerator_filter(pointer_accel_profile_linear,
> -                                                dpi);
> +     filter = create_pointer_accelerator_filter_linear(dpi);
>       assert(filter != NULL);
>       filter_set_speed(filter, speed);
>  
> -- 
> 2.4.3
> 
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