[RFC PATCH v4 21/42] drm/vkms: Pull apply_colorop out of pre_blend_color_transform

[Harry Wentland]

The if/switch statement is bound to grow with more types and
subtypes. Pull this out into its own funcion to make things more
manageable and readable.

Signed-off-by: Harry Wentland <harry.wentland at amd.com>
---
 drivers/gpu/drm/vkms/vkms_composer.c | 48 ++++++++++++++++------------
 1 file changed, 28 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c
index 9493bdb1ba3f..25b786b49db0 100644
--- a/drivers/gpu/drm/vkms/vkms_composer.c
+++ b/drivers/gpu/drm/vkms/vkms_composer.c
@@ -164,6 +164,31 @@ static void apply_lut(const struct vkms_crtc_state *crtc_state, struct line_buff
 	}
 }
 
+static void apply_colorop(struct pixel_argb_u16 *pixel, struct drm_colorop *colorop)
+{
+	/* TODO is this right? */
+	struct drm_colorop_state *colorop_state = colorop->state;
+
+	if (colorop->type == DRM_COLOROP_1D_CURVE) {
+		switch (colorop_state->curve_1d_type) {
+			case DRM_COLOROP_1D_CURVE_SRGB_INV_EOTF:
+				pixel->r = apply_lut_to_channel_value(&srgb_inv_eotf, pixel->r, LUT_RED);
+				pixel->g = apply_lut_to_channel_value(&srgb_inv_eotf, pixel->g, LUT_GREEN);
+				pixel->b = apply_lut_to_channel_value(&srgb_inv_eotf, pixel->b, LUT_BLUE);
+				break;
+			case DRM_COLOROP_1D_CURVE_SRGB_EOTF:
+				pixel->r = apply_lut_to_channel_value(&srgb_eotf, pixel->r, LUT_RED);
+				pixel->g = apply_lut_to_channel_value(&srgb_eotf, pixel->g, LUT_GREEN);
+				pixel->b = apply_lut_to_channel_value(&srgb_eotf, pixel->b, LUT_BLUE);
+				break;
+			default:
+				DRM_DEBUG_DRIVER("unkown colorop 1D curve type %d\n", colorop_state->curve_1d_type);
+				break;
+		}
+	}
+
+}
+
 static void pre_blend_color_transform(const struct vkms_plane_state *plane_state, struct line_buffer *output_buffer)
 {
 	struct drm_colorop *colorop = plane_state->base.base.color_pipeline;
@@ -180,26 +205,9 @@ static void pre_blend_color_transform(const struct vkms_plane_state *plane_state
 		if (!colorop_state)
 			return;
 
-		for (size_t x = 0; x < output_buffer->n_pixels; x++) {
-			struct pixel_argb_u16 *pixel = &output_buffer->pixels[x];
-
-			if (colorop->type == DRM_COLOROP_1D_CURVE &&
-				colorop_state->bypass == false) {
-				switch (colorop_state->curve_1d_type) {
-					case DRM_COLOROP_1D_CURVE_SRGB_INV_EOTF:
-						pixel->r = apply_lut_to_channel_value(&srgb_inv_eotf, pixel->r, LUT_RED);
-						pixel->g = apply_lut_to_channel_value(&srgb_inv_eotf, pixel->g, LUT_GREEN);
-						pixel->b = apply_lut_to_channel_value(&srgb_inv_eotf, pixel->b, LUT_BLUE);
-						break;
-					case DRM_COLOROP_1D_CURVE_SRGB_EOTF:
-					default:
-						pixel->r = apply_lut_to_channel_value(&srgb_eotf, pixel->r, LUT_RED);
-						pixel->g = apply_lut_to_channel_value(&srgb_eotf, pixel->g, LUT_GREEN);
-						pixel->b = apply_lut_to_channel_value(&srgb_eotf, pixel->b, LUT_BLUE);
-						break;
-				}
-			}
-		}
+		for (size_t x = 0; x < output_buffer->n_pixels; x++)
+			if (!colorop_state->bypass)
+				apply_colorop(&output_buffer->pixels[x], colorop);
 
 		colorop = colorop->next;
 	}
-- 
2.44.0