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Remove damage checker 

There's a much better one in wayvnc
dmabuf-import
Andri Yngvason 2021-09-04 23:33:25 +00:00
parent 965dbd6eca
commit e8e4a9469a
3 changed files with 0 additions and 198 deletions
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10
include/neatvnc.h
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@ -120,14 +120,4 @@ void nvnc_display_damage_region(struct nvnc_display*,
const struct pixman_region16*); const struct pixman_region16*);
void nvnc_display_damage_whole(struct nvnc_display*); void nvnc_display_damage_whole(struct nvnc_display*);
/*
* Find the regions that differ between fb0 and fb1. Regions outside the hinted
* rectangle region are not guaranteed to be checked.
*
* This is a utility function that may be used to reduce network traffic.
*/
int nvnc_check_damage(struct nvnc_fb* fb0, struct nvnc_fb* fb1,
int x_hint, int y_hint, int width_hint, int height_hint,
nvnc_damage_fn on_check_done, void* userdata);
void nvnc_send_cut_text(struct nvnc*, const char* text, uint32_t len); void nvnc_send_cut_text(struct nvnc*, const char* text, uint32_t len);

1
meson.build
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@ -64,7 +64,6 @@ sources = [
'src/zrle.c', 'src/zrle.c',
'src/raw-encoding.c', 'src/raw-encoding.c',
'src/pixels.c', 'src/pixels.c',
'src/damage.c',
'src/fb.c', 'src/fb.c',
'src/fb_pool.c', 'src/fb_pool.c',
'src/rcbuf.c', 'src/rcbuf.c',

187
src/damage.c
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@ -1,187 +0,0 @@
/*
* Copyright (c) 2019 - 2020 Andri Yngvason
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "neatvnc.h"
#include "fb.h"
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
#include <pixman.h>
#include <string.h>
#include <sys/param.h>
#include <libdrm/drm_fourcc.h>
#include <aml.h>
#include <assert.h>
#define EXPORT __attribute__((visibility("default")))
#define ALIGN_DOWN(a, b) (((a) / (b)) * (b))
struct damage_check {
struct aml_work* work;
struct nvnc_fb* fb0;
struct nvnc_fb* fb1;
int x_hint;
int y_hint;
int width_hint;
int height_hint;
nvnc_damage_fn on_done;
struct pixman_region16 damage;
void* userdata;
};
static bool fbs_are_compatible(const struct nvnc_fb* fb0,
const struct nvnc_fb* fb1)
{
return fb0->fourcc_format == fb1->fourcc_format &&
fb0->width == fb1->width && fb0->height == fb1->height;
}
static inline bool are_tiles_equal(const uint32_t* a, const uint32_t* b,
int stride, int width, int height)
{
for (int y = 0; y < height; ++y)
if (memcmp(a + y * stride, b + y * stride, width * 4) != 0)
return false;
return true;
}
#define TILE_SIDE_LENGTH 32
static int check_damage_linear(struct pixman_region16* damage,
const struct nvnc_fb* fb0,
const struct nvnc_fb* fb1,
int x_hint, int y_hint,
int width_hint, int height_hint)
{
uint32_t* b0 = fb0->addr;
uint32_t* b1 = fb1->addr;
int width = fb0->width;
int height = fb0->height;
assert(x_hint + width_hint <= width);
assert(y_hint + height_hint <= height);
int x_start = ALIGN_DOWN(x_hint, TILE_SIDE_LENGTH);
int y_start = ALIGN_DOWN(y_hint, TILE_SIDE_LENGTH);
width_hint += x_hint - x_start;
height_hint += y_hint - y_start;
for (int y = y_start; y < y_start + height_hint; y += TILE_SIDE_LENGTH) {
int tile_height = MIN(TILE_SIDE_LENGTH, height - y);
for (int x = x_start; x < x_start + width_hint;
x += TILE_SIDE_LENGTH) {
int tile_width = MIN(TILE_SIDE_LENGTH, width - x);
int offset = x + y * width;
if (are_tiles_equal(b0 + offset, b1 + offset, width,
tile_width, tile_height))
continue;
pixman_region_union_rect(damage, damage, x, y,
tile_width, tile_height);
}
}
return 0;
}
#undef TILE_SIDE_LENGTH
static void do_damage_check_linear(void* work)
{
struct damage_check* check = aml_get_userdata(work);
check_damage_linear(&check->damage, check->fb0, check->fb1,
check->x_hint, check->y_hint, check->width_hint,
check->height_hint);
}
static void on_damage_check_done_linear(void* work)
{
struct damage_check* check = aml_get_userdata(work);
check->on_done(&check->damage, check->userdata);
nvnc_fb_unref(check->fb1);
nvnc_fb_unref(check->fb0);
pixman_region_fini(&check->damage);
}
static int check_damage_linear_threaded(struct nvnc_fb* fb0,
struct nvnc_fb* fb1,
int x_hint, int y_hint,
int width_hint, int height_hint,
nvnc_damage_fn on_check_done,
void* userdata)
{
struct damage_check* work = calloc(1, sizeof(*work));
if (!work)
return -1;
work->on_done = on_check_done;
work->userdata = userdata;
work->fb0 = fb0;
work->fb1 = fb1;
work->x_hint = x_hint;
work->y_hint = y_hint;
work->width_hint = width_hint;
work->height_hint = height_hint;
pixman_region_init(&work->damage);
/* TODO: Spread the work into more tasks */
struct aml_work* obj =
aml_work_new(do_damage_check_linear, on_damage_check_done_linear,
work, free);
if (!obj) {
free(work);
return -1;
}
int rc = aml_start(aml_get_default(), obj);
aml_unref(obj);
if (rc < 0)
return -1;
work->work = obj;
nvnc_fb_ref(fb0);
nvnc_fb_ref(fb1);
return 0;
}
EXPORT
int nvnc_check_damage(struct nvnc_fb* fb0, struct nvnc_fb* fb1,
int x_hint, int y_hint, int width_hint, int height_hint,
nvnc_damage_fn on_check_done, void* userdata)
{
if (!fbs_are_compatible(fb0, fb1))
return -1;
switch (fb0->fourcc_modifier) {
case DRM_FORMAT_MOD_LINEAR:
return check_damage_linear_threaded(fb0, fb1, x_hint, y_hint,
width_hint, height_hint,
on_check_done, userdata);
}
return -1;
}