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drm/vkms: Isolate writeback pixel conversion functions

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All convertions from the ARGB16161616 format follow the same structure.
Instead of repeting the same structure for each supported format, create
a function to encapsulate the common logic and isolate the pixel
conversion functions in a callback function.

Suggested-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Arthur Grillo <arthurgrillo@riseup.net>
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515135204.115393-4-mcanal@igalia.com
This commit is contained in:
Maíra Canal
2023-05-09 17:28:53 -03:00
committed by Maíra Canal
parent e2a47217b9
commit cc4fd2934d
5 changed files with 61 additions and 87 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/vkms/vkms_composer.c
View File

@@ -133,7 +133,7 @@ static void blend(struct vkms_writeback_job *wb,
*crc32 = crc32_le(*crc32, (void *)output_buffer->pixels, row_size);
if (wb)
wb->wb_write(&wb->wb_frame_info, output_buffer, y_pos);
vkms_writeback_row(wb, output_buffer, y_pos);
}
}
@@ -147,7 +147,7 @@ static int check_format_funcs(struct vkms_crtc_state *crtc_state,
if (!planes[i]->pixel_read)
return -1;
if (active_wb && !active_wb->wb_write)
if (active_wb && !active_wb->pixel_write)
return -1;
return 0;

4
drivers/gpu/drm/vkms/vkms_drv.h
View File

@@ -46,8 +46,7 @@ struct line_buffer {
struct vkms_writeback_job {
struct iosys_map data[DRM_FORMAT_MAX_PLANES];
struct vkms_frame_info wb_frame_info;
void (*wb_write)(struct vkms_frame_info *frame_info,
const struct line_buffer *buffer, int y);
void (*pixel_write)(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel);
};
/**
@@ -157,6 +156,7 @@ int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
void vkms_composer_worker(struct work_struct *work);
void vkms_set_composer(struct vkms_output *out, bool enabled);
void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state *plane, int y);
void vkms_writeback_row(struct vkms_writeback_job *wb, const struct line_buffer *src_buffer, int y);
/* Writeback */
int vkms_enable_writeback_connector(struct vkms_device *vkmsdev);

136
drivers/gpu/drm/vkms/vkms_formats.c
View File

@@ -150,107 +150,81 @@ void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state
* They are used in the `compose_active_planes` to convert and store a line
* from the src_buffer to the writeback buffer.
*/
static void argb_u16_to_ARGB8888(struct vkms_frame_info *frame_info,
const struct line_buffer *src_buffer, int y)
static void argb_u16_to_ARGB8888(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
{
int x_dst = frame_info->dst.x1;
u8 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y);
struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
src_buffer->n_pixels);
for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) {
/*
* This sequence below is important because the format's byte order is
* in little-endian. In the case of the ARGB8888 the memory is
* organized this way:
*
* | Addr | = blue channel
* | Addr + 1 | = green channel
* | Addr + 2 | = Red channel
* | Addr + 3 | = Alpha channel
*/
dst_pixels[3] = DIV_ROUND_CLOSEST(in_pixels[x].a, 257);
dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixels[x].r, 257);
dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixels[x].g, 257);
dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixels[x].b, 257);
}
/*
* This sequence below is important because the format's byte order is
* in little-endian. In the case of the ARGB8888 the memory is
* organized this way:
*
* | Addr | = blue channel
* | Addr + 1 | = green channel
* | Addr + 2 | = Red channel
* | Addr + 3 | = Alpha channel
*/
dst_pixels[3] = DIV_ROUND_CLOSEST(in_pixel->a, 257);
dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixel->r, 257);
dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixel->g, 257);
dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixel->b, 257);
}
static void argb_u16_to_XRGB8888(struct vkms_frame_info *frame_info,
const struct line_buffer *src_buffer, int y)
static void argb_u16_to_XRGB8888(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
{
int x_dst = frame_info->dst.x1;
u8 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y);
struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
src_buffer->n_pixels);
for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) {
dst_pixels[3] = 0xff;
dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixels[x].r, 257);
dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixels[x].g, 257);
dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixels[x].b, 257);
}
dst_pixels[3] = 0xff;
dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixel->r, 257);
dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixel->g, 257);
dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixel->b, 257);
}
static void argb_u16_to_ARGB16161616(struct vkms_frame_info *frame_info,
const struct line_buffer *src_buffer, int y)
static void argb_u16_to_ARGB16161616(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
{
int x_dst = frame_info->dst.x1;
u16 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y);
struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
src_buffer->n_pixels);
u16 *pixels = (u16 *)dst_pixels;
for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) {
dst_pixels[3] = cpu_to_le16(in_pixels[x].a);
dst_pixels[2] = cpu_to_le16(in_pixels[x].r);
dst_pixels[1] = cpu_to_le16(in_pixels[x].g);
dst_pixels[0] = cpu_to_le16(in_pixels[x].b);
}
pixels[3] = cpu_to_le16(in_pixel->a);
pixels[2] = cpu_to_le16(in_pixel->r);
pixels[1] = cpu_to_le16(in_pixel->g);
pixels[0] = cpu_to_le16(in_pixel->b);
}
static void argb_u16_to_XRGB16161616(struct vkms_frame_info *frame_info,
const struct line_buffer *src_buffer, int y)
static void argb_u16_to_XRGB16161616(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
{
int x_dst = frame_info->dst.x1;
u16 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y);
struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
src_buffer->n_pixels);
u16 *pixels = (u16 *)dst_pixels;
for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) {
dst_pixels[3] = 0xffff;
dst_pixels[2] = cpu_to_le16(in_pixels[x].r);
dst_pixels[1] = cpu_to_le16(in_pixels[x].g);
dst_pixels[0] = cpu_to_le16(in_pixels[x].b);
}
pixels[3] = 0xffff;
pixels[2] = cpu_to_le16(in_pixel->r);
pixels[1] = cpu_to_le16(in_pixel->g);
pixels[0] = cpu_to_le16(in_pixel->b);
}
static void argb_u16_to_RGB565(struct vkms_frame_info *frame_info,
const struct line_buffer *src_buffer, int y)
static void argb_u16_to_RGB565(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
{
int x_dst = frame_info->dst.x1;
u16 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y);
struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst),
src_buffer->n_pixels);
u16 *pixels = (u16 *)dst_pixels;
s64 fp_rb_ratio = drm_fixp_div(drm_int2fixp(65535), drm_int2fixp(31));
s64 fp_g_ratio = drm_fixp_div(drm_int2fixp(65535), drm_int2fixp(63));
for (size_t x = 0; x < x_limit; x++, dst_pixels++) {
s64 fp_r = drm_int2fixp(in_pixels[x].r);
s64 fp_g = drm_int2fixp(in_pixels[x].g);
s64 fp_b = drm_int2fixp(in_pixels[x].b);
s64 fp_r = drm_int2fixp(in_pixel->r);
s64 fp_g = drm_int2fixp(in_pixel->g);
s64 fp_b = drm_int2fixp(in_pixel->b);
u16 r = drm_fixp2int_round(drm_fixp_div(fp_r, fp_rb_ratio));
u16 g = drm_fixp2int_round(drm_fixp_div(fp_g, fp_g_ratio));
u16 b = drm_fixp2int_round(drm_fixp_div(fp_b, fp_rb_ratio));
u16 r = drm_fixp2int(drm_fixp_div(fp_r, fp_rb_ratio));
u16 g = drm_fixp2int(drm_fixp_div(fp_g, fp_g_ratio));
u16 b = drm_fixp2int(drm_fixp_div(fp_b, fp_rb_ratio));
*dst_pixels = cpu_to_le16(r << 11 | g << 5 | b);
}
*pixels = cpu_to_le16(r << 11 | g << 5 | b);
}
void vkms_writeback_row(struct vkms_writeback_job *wb,
const struct line_buffer *src_buffer, int y)
{
struct vkms_frame_info *frame_info = &wb->wb_frame_info;
int x_dst = frame_info->dst.x1;
u8 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y);
struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), src_buffer->n_pixels);
for (size_t x = 0; x < x_limit; x++, dst_pixels += frame_info->cpp)
wb->pixel_write(dst_pixels, &in_pixels[x]);
}
void *get_pixel_conversion_function(u32 format)
@@ -271,7 +245,7 @@ void *get_pixel_conversion_function(u32 format)
}
}
void *get_line_to_frame_function(u32 format)
void *get_pixel_write_function(u32 format)
{
switch (format) {
case DRM_FORMAT_ARGB8888:

2
drivers/gpu/drm/vkms/vkms_formats.h
View File

@@ -7,6 +7,6 @@
void *get_pixel_conversion_function(u32 format);
void *get_line_to_frame_function(u32 format);
void *get_pixel_write_function(u32 format);
#endif /* _VKMS_FORMATS_H_ */

2
drivers/gpu/drm/vkms/vkms_writeback.c
View File

@@ -151,7 +151,7 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
wb_frame_info->cpp = fb->format->cpp[0];
drm_writeback_queue_job(wb_conn, connector_state);
active_wb->wb_write = get_line_to_frame_function(wb_format);
active_wb->pixel_write = get_pixel_write_function(wb_format);
drm_rect_init(&wb_frame_info->src, 0, 0, crtc_width, crtc_height);
drm_rect_init(&wb_frame_info->dst, 0, 0, crtc_width, crtc_height);
}