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GUAC-675: Add rect struct. Migrate surface to new rect struct.

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This commit is contained in:
Michael Jumper 2014-05-12 01:39:52 -07:00
parent 32474c1114
commit c0b955fab0
5 changed files with 292 additions and 262 deletions
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2
src/common/Makefile.am
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@ -33,6 +33,7 @@ noinst_HEADERS = \
guac_iconv.h \
guac_list.h \
guac_pointer_cursor.h \
guac_rect.h \
guac_string.h \
guac_surface.h
@ -43,6 +44,7 @@ libguac_common_la_SOURCES = \
guac_iconv.c \
guac_list.c \
guac_pointer_cursor.c \
guac_rect.c \
guac_string.c \
guac_surface.c

82
src/common/guac_rect.c Normal file
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@ -0,0 +1,82 @@
/*
* Copyright (C) 2014 Glyptodon LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "config.h"
#include "guac_rect.h"
void guac_common_rect_init(guac_common_rect* rect, int x, int y, int width, int height) {
rect->x = x;
rect->y = y;
rect->width = width;
rect->height = height;
}
void guac_common_rect_extend(guac_common_rect* rect, const guac_common_rect* min) {
/* Calculate extents of existing dirty rect */
int left = rect->x;
int top = rect->y;
int right = left + rect->width;
int bottom = top + rect->height;
/* Calculate missing extents of given new rect */
int min_left = min->x;
int min_top = min->y;
int min_right = min_left + min->width;
int min_bottom = min_top + min->height;
/* Update minimums */
if (min_left < left) left = min_left;
if (min_top < top) top = min_top;
if (min_right > right) right = min_right;
if (min_bottom > bottom) bottom = min_bottom;
/* Commit rect */
guac_common_rect_init(rect, left, top, right - left, bottom - top);
}
void guac_common_rect_constrain(guac_common_rect* rect, const guac_common_rect* max) {
/* Calculate extents of existing dirty rect */
int left = rect->x;
int top = rect->y;
int right = left + rect->width;
int bottom = top + rect->height;
/* Calculate missing extents of given new rect */
int max_left = max->x;
int max_top = max->y;
int max_right = max_left + max->width;
int max_bottom = max_top + max->height;
/* Update maximums */
if (max_left > left) left = max_left;
if (max_top > top) top = max_top;
if (max_right < right) right = max_right;
if (max_bottom < bottom) bottom = max_bottom;
/* Commit rect */
guac_common_rect_init(rect, left, top, right - left, bottom - top);
}

85
src/common/guac_rect.h Normal file
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@ -0,0 +1,85 @@
/*
* Copyright (C) 2014 Glyptodon LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef __GUAC_COMMON_RECT_H
#define __GUAC_COMMON_RECT_H
#include "config.h"
/**
* Simple representation of a rectangle, having a defined corner and dimensions.
*/
typedef struct guac_common_rect {
/**
* The X coordinate of the upper-left corner of this rectangle.
*/
int x;
/**
* The Y coordinate of the upper-left corner of this rectangle.
*/
int y;
/**
* The width of this rectangle.
*/
int width;
/**
* The height of this rectangle.
*/
int height;
} guac_common_rect;
/**
* Initialize the given rect with the given coordinates and dimensions.
*
* @param rect The rect to initialize.
* @param x The X coordinate of the upper-left corner of the rect.
* @param y The Y coordinate of the upper-left corner of the rect.
* @param width The width of the rect.
* @param height The height of the rect.
*/
void guac_common_rect_init(guac_common_rect* rect, int x, int y, int width, int height);
/**
* Extend the given rect such that it contains at least the specified minimum
* rect.
*
* @param rect The rect to extend.
* @param min The minimum area which must be contained within the given rect.
*/
void guac_common_rect_extend(guac_common_rect* rect, const guac_common_rect* min);
/**
* Collapse the given rect such that it exists only within the given maximum
* rect.
*
* @param rect The rect to extend.
* @param max The maximum area in which the given rect can exist.
*/
void guac_common_rect_constrain(guac_common_rect* rect, const guac_common_rect* max);
#endif

320
src/common/guac_surface.c
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@ -21,6 +21,7 @@
*/
#include "config.h"
#include "guac_rect.h"
#include "guac_surface.h"
#include <cairo/cairo.h>
@ -87,35 +88,17 @@
* @param sx The X coordinate of the source rectangle, if any.
* @param sy The Y coordinate of the source rectangle, if any.
*/
static void __guac_common_bound_rect(guac_common_surface* surface, int* x, int* y, int* w, int* h,
static void __guac_common_bound_rect(guac_common_surface* surface, guac_common_rect* rect,
int* sx, int* sy) {
int bounds_left = surface->bounds_x;
int bounds_top = surface->bounds_y;
int bounds_right = bounds_left + surface->bounds_width;
int bounds_bottom = bounds_top + surface->bounds_height;
int orig_x = rect->x;
int orig_y = rect->y;
/* Get rect coordinates */
int clipped_left = *x;
int clipped_top = *y;
int clipped_right = clipped_left + *w;
int clipped_bottom = clipped_top + *h;
/* Clip to bounds */
if (clipped_left < bounds_left) clipped_left = bounds_left;
if (clipped_top < bounds_top) clipped_top = bounds_top;
if (clipped_right > bounds_right) clipped_right = bounds_right;
if (clipped_bottom > bounds_bottom) clipped_bottom = bounds_bottom;
guac_common_rect_constrain(rect, &surface->bounds_rect);
/* Update source X/Y if given */
if (sx != NULL) *sx += clipped_left - *x;
if (sy != NULL) *sy += clipped_top - *y;
/* Store new rect dimensions */
*x = clipped_left;
*y = clipped_top;
*w = clipped_right - clipped_left;
*h = clipped_bottom - clipped_top;
if (sx != NULL) *sx += rect->x - orig_x;
if (sy != NULL) *sy += rect->y - orig_y;
}
@ -134,40 +117,24 @@ static void __guac_common_bound_rect(guac_common_surface* surface, int* x, int*
* @return Non-zero if the update should be combined with any existing update,
* zero otherwise.
*/
static int __guac_common_should_combine(guac_common_surface* surface, int x, int y, int w, int h, int rect_only) {
static int __guac_common_should_combine(guac_common_surface* surface, guac_common_rect* rect, int rect_only) {
if (surface->dirty) {
int combined_cost, dirty_cost, update_cost;
int combined_width, combined_height;
/* Calculate extents of existing dirty rect */
int dirty_left = surface->dirty_x;
int dirty_top = surface->dirty_y;
int dirty_right = dirty_left + surface->dirty_width;
int dirty_bottom = dirty_top + surface->dirty_height;
/* Calculate missing extents of given new rect */
int right = x + w;
int bottom = y + h;
/* Update minimums */
if (x < dirty_left) dirty_left = x;
if (y < dirty_top) dirty_top = y;
if (right > dirty_right) dirty_right = right;
if (bottom > dirty_bottom) dirty_bottom = bottom;
combined_width = dirty_right - dirty_left;
combined_height = dirty_bottom - dirty_top;
/* Simulate combination */
guac_common_rect combined = surface->dirty_rect;
guac_common_rect_extend(&combined, rect);
/* Combine if result is still small */
if (combined_width <= GUAC_SURFACE_NEGLIGIBLE_WIDTH && combined_height <= GUAC_SURFACE_NEGLIGIBLE_HEIGHT)
if (combined.width <= GUAC_SURFACE_NEGLIGIBLE_WIDTH && combined.height <= GUAC_SURFACE_NEGLIGIBLE_HEIGHT)
return 1;
/* Estimate costs of the existing update, new update, and both combined */
combined_cost = GUAC_SURFACE_BASE_COST + combined_width * combined_height;
dirty_cost = GUAC_SURFACE_BASE_COST + surface->dirty_width * surface->dirty_height;
update_cost = GUAC_SURFACE_BASE_COST + w*h;
combined_cost = GUAC_SURFACE_BASE_COST + combined.width * combined.height;
dirty_cost = GUAC_SURFACE_BASE_COST + surface->dirty_rect.width * surface->dirty_rect.height;
update_cost = GUAC_SURFACE_BASE_COST + rect->width * rect->height;
/* Reduce cost if no image data */
if (rect_only)
@ -185,7 +152,7 @@ static int __guac_common_should_combine(guac_common_surface* surface, int x, int
return 1;
/* Combine if we anticipate further updates, as this update follows a common fill pattern */
if (x == surface->dirty_x && y == surface->dirty_y + surface->dirty_height) {
if (rect->x == surface->dirty_rect.x && rect->y == surface->dirty_rect.y + surface->dirty_rect.height) {
if (combined_cost <= (dirty_cost + update_cost) * GUAC_SURFACE_FILL_PATTERN_FACTOR)
return 1;
}
@ -206,41 +173,15 @@ static int __guac_common_should_combine(guac_common_surface* surface, int x, int
* @param w The width of the rectangle.
* @param h The height of the rectangle.
*/
static void __guac_common_mark_dirty(guac_common_surface* surface, int x, int y, int w, int h) {
static void __guac_common_mark_dirty(guac_common_surface* surface, guac_common_rect* rect) {
/* If already dirty, update existing rect */
if (surface->dirty) {
/* Calculate extents of existing dirty rect */
int dirty_left = surface->dirty_x;
int dirty_top = surface->dirty_y;
int dirty_right = dirty_left + surface->dirty_width;
int dirty_bottom = dirty_top + surface->dirty_height;
/* Calculate missing extents of given new rect */
int right = x + w;
int bottom = y + h;
/* Update minimums */
if (x < dirty_left) dirty_left = x;
if (y < dirty_top) dirty_top = y;
if (right > dirty_right) dirty_right = right;
if (bottom > dirty_bottom) dirty_bottom = bottom;
/* Commit rect */
surface->dirty_x = dirty_left;
surface->dirty_y = dirty_top;
surface->dirty_width = dirty_right - dirty_left;
surface->dirty_height = dirty_bottom - dirty_top;
}
if (surface->dirty)
guac_common_rect_extend(&surface->dirty_rect, rect);
/* Otherwise init dirty rect */
else {
surface->dirty_x = x;
surface->dirty_y = y;
surface->dirty_width = w;
surface->dirty_height = h;
surface->dirty_rect = *rect;
surface->dirty = 1;
}
@ -263,10 +204,7 @@ static void __guac_common_surface_flush_to_queue(guac_common_surface* surface) {
/* Add new rect to queue */
rect = &(surface->png_queue[surface->png_queue_length++]);
rect->x = surface->dirty_x;
rect->y = surface->dirty_y;
rect->width = surface->dirty_width;
rect->height = surface->dirty_height;
rect->rect = surface->dirty_rect;
rect->flushed = 0;
/* Surface now flushed */
@ -381,7 +319,7 @@ static void __guac_common_surface_transfer_int(guac_transfer_function op, uint32
* @param green The green component of the color of the rectangle.
* @param blue The blue component of the color of the rectangle.
*/
static void __guac_common_surface_rect(guac_common_surface* dst, int dx, int dy, int w, int h,
static void __guac_common_surface_rect(guac_common_surface* dst, guac_common_rect* rect,
int red, int green, int blue) {
int x, y;
@ -392,15 +330,15 @@ static void __guac_common_surface_rect(guac_common_surface* dst, int dx, int dy,
uint32_t color = 0xFF000000 | (red << 16) | (green << 8) | blue;
dst_stride = dst->stride;
dst_buffer = dst->buffer + dst_stride*dy + 4*dx;
dst_buffer = dst->buffer + (dst_stride * rect->y) + (4 * rect->x);
/* For each row */
for (y=0; y<h; y++) {
for (y=0; y < rect->height; y++) {
uint32_t* dst_current = (uint32_t*) dst_buffer;
/* Set row */
for (x=0; x<w; x++) {
for (x=0; x < rect->width; x++) {
*dst_current = color;
dst_current++;
}
@ -431,8 +369,7 @@ static void __guac_common_surface_rect(guac_common_surface* dst, int dx, int dy,
*/
static void __guac_common_surface_put(unsigned char* src_buffer, int src_stride,
int sx, int sy,
guac_common_surface* dst,
int* dx, int* dy, int* w, int* h,
guac_common_surface* dst, guac_common_rect* rect,
int opaque) {
unsigned char* dst_buffer = dst->buffer;
@ -440,22 +377,22 @@ static void __guac_common_surface_put(unsigned char* src_buffer, int src_stride,
int x, y;
int min_x = *w - 1;
int min_y = *h - 1;
int min_x = rect->width - 1;
int min_y = rect->height - 1;
int max_x = 0;
int max_y = 0;
src_buffer += src_stride*sy + 4*sx;
dst_buffer += dst_stride*(*dy) + 4*(*dx);
dst_buffer += (dst_stride * rect->y) + (4 * rect->x);
/* For each row */
for (y=0; y<*h; y++) {
for (y=0; y < rect->height; y++) {
uint32_t* src_current = (uint32_t*) src_buffer;
uint32_t* dst_current = (uint32_t*) dst_buffer;
/* Copy row */
for (x=0; x<*w; x++) {
for (x=0; x < rect->width; x++) {
if (opaque || (*src_current & 0xFF000000)) {
@ -482,14 +419,14 @@ static void __guac_common_surface_put(unsigned char* src_buffer, int src_stride,
}
if (max_x >= min_x && max_y >= min_y) {
*dx += min_x;
*dy += min_y;
*w = max_x - min_x + 1;
*h = max_y - min_y + 1;
rect->x += min_x;
rect->y += min_y;
rect->width = max_x - min_x + 1;
rect->height = max_y - min_y + 1;
}
else {
*w = 0;
*h = 0;
rect->width = 0;
rect->height = 0;
}
}
@ -513,8 +450,8 @@ static void __guac_common_surface_put(unsigned char* src_buffer, int src_stride,
* @param blue The blue component of the color of the fill.
*/
static void __guac_common_surface_fill_mask(unsigned char* src_buffer, int src_stride,
int sx, int sy, int w, int h,
guac_common_surface* dst, int dx, int dy,
int sx, int sy,
guac_common_surface* dst, guac_common_rect* rect,
int red, int green, int blue) {
unsigned char* dst_buffer = dst->buffer;
@ -524,16 +461,16 @@ static void __guac_common_surface_fill_mask(unsigned char* src_buffer, int src_s
int x, y;
src_buffer += src_stride*sy + 4*sx;
dst_buffer += dst_stride*dy + 4*dx;
dst_buffer += (dst_stride * rect->y) + (4 * rect->x);
/* For each row */
for (y=0; y<h; y++) {
for (y=0; y < rect->height; y++) {
uint32_t* src_current = (uint32_t*) src_buffer;
uint32_t* dst_current = (uint32_t*) dst_buffer;
/* Stencil row */
for (x=0; x<w; x++) {
for (x=0; x < rect->width; x++) {
/* Fill with color if opaque */
if (*src_current & 0xFF000000)
@ -566,8 +503,9 @@ static void __guac_common_surface_fill_mask(unsigned char* src_buffer, int src_s
* @param dx The destination X coordinate.
* @param dy The destination Y coordinate.
*/
static void __guac_common_surface_transfer(guac_common_surface* src, int sx, int sy, int w, int h,
guac_transfer_function op, guac_common_surface* dst, int dx, int dy) {
static void __guac_common_surface_transfer(guac_common_surface* src, int sx, int sy,
guac_transfer_function op,
guac_common_surface* dst, guac_common_rect* rect) {
unsigned char* src_buffer = src->buffer;
unsigned char* dst_buffer = dst->buffer;
@ -577,9 +515,9 @@ static void __guac_common_surface_transfer(guac_common_surface* src, int sx, int
int step = 1;
/* Copy forwards only if destination is in a different surface or is before source */
if (src != dst || dy < sy || (dy == sy && dx < sx)) {
if (src != dst || rect->y < sy || (rect->y == sy && rect->x < sx)) {
src_buffer += src->stride*sy + 4*sx;
dst_buffer += dst->stride*dy + 4*dx;
dst_buffer += (dst->stride * rect->y) + (4 * rect->x);
src_stride = src->stride;
dst_stride = dst->stride;
step = 1;
@ -587,21 +525,21 @@ static void __guac_common_surface_transfer(guac_common_surface* src, int sx, int
/* Otherwise, copy backwards */
else {
src_buffer += src->stride*(sy+h-1) + 4*(sx+w-1);
dst_buffer += dst->stride*(dy+h-1) + 4*(dx+w-1);
src_buffer += src->stride * (sy + rect->height - 1) + 4 * (sx + rect->width - 1);
dst_buffer += dst->stride * (rect->y + rect->height - 1) + 4 * (rect->x + rect->width - 1);
src_stride = -src->stride;
dst_stride = -dst->stride;
step = -1;
}
/* For each row */
for (y=0; y<h; y++) {
for (y=0; y < rect->height; y++) {
uint32_t* src_current = (uint32_t*) src_buffer;
uint32_t* dst_current = (uint32_t*) dst_buffer;
/* Transfer each pixel in row */
for (x=0; x<w; x++) {
for (x=0; x < rect->width; x++) {
__guac_common_surface_transfer_int(op, src_current, dst_current);
src_current += step;
dst_current += step;
@ -617,6 +555,8 @@ static void __guac_common_surface_transfer(guac_common_surface* src, int sx, int
guac_common_surface* guac_common_surface_alloc(guac_socket* socket, const guac_layer* layer, int w, int h) {
guac_common_rect rect;
/* Init surface */
guac_common_surface* surface = malloc(sizeof(guac_common_surface));
surface->layer = layer;
@ -634,7 +574,8 @@ guac_common_surface* guac_common_surface_alloc(guac_socket* socket, const guac_l
guac_common_surface_reset_clip(surface);
/* Init with black */
__guac_common_surface_rect(surface, 0, 0, w, h, 0x00, 0x00, 0x00);
rect = surface->bounds_rect;
__guac_common_surface_rect(surface, &rect, 0x00, 0x00, 0x00);
/* Layers must initially exist */
if (layer->index >= 0) {
@ -668,8 +609,8 @@ void guac_common_surface_resize(guac_common_surface* surface, int w, int h) {
/* Copy old surface data */
unsigned char* old_buffer = surface->buffer;
int old_stride = surface->stride;
int old_width = surface->width;
int old_height = surface->height;
guac_common_rect old_rect;
guac_common_rect_init(&old_rect, 0, 0, surface->width, surface->height);
/* Create new buffer */
int stride = cairo_format_stride_for_width(CAIRO_FORMAT_RGB24, w);
@ -685,12 +626,8 @@ void guac_common_surface_resize(guac_common_surface* surface, int w, int h) {
guac_common_surface_reset_clip(surface);
/* Init with old data */
int x = 0;
int y = 0;
if (old_width > w) old_width = w;
if (old_height > h) old_height = h;
__guac_common_surface_put(old_buffer, old_stride, 0, 0,
surface, &x, &y, &old_width, &old_height, 1);
guac_common_rect_constrain(&old_rect, &surface->bounds_rect);
__guac_common_surface_put(old_buffer, old_stride, 0, 0, surface, &old_rect, 1);
/* Free old data */
free(old_buffer);
@ -698,25 +635,8 @@ void guac_common_surface_resize(guac_common_surface* surface, int w, int h) {
/* Clip dirty rect */
if (surface->dirty) {
int dirty_left = surface->dirty_x;
int dirty_top = surface->dirty_y;
/* Clip dirty rect if still on screen */
if (dirty_left < w && dirty_top < h) {
int dirty_right = dirty_left + surface->dirty_width;
int dirty_bottom = dirty_top + surface->dirty_height;
if (dirty_right > w) dirty_right = w;
if (dirty_bottom > h) dirty_bottom = h;
surface->dirty_width = dirty_right - dirty_left;
surface->dirty_height = dirty_bottom - dirty_top;
}
/* Otherwise, no longer dirty */
else
guac_common_rect_constrain(&surface->dirty_rect, &surface->bounds_rect);
if (surface->dirty_rect.width <= 0 || surface->dirty_rect.height <= 0)
surface->dirty = 0;
}
@ -738,22 +658,25 @@ void guac_common_surface_draw(guac_common_surface* surface, int x, int y, cairo_
int sx = 0;
int sy = 0;
guac_common_rect rect;
guac_common_rect_init(&rect, x, y, w, h);
/* Clip operation */
__guac_common_bound_rect(surface, &x, &y, &w, &h, &sx, &sy);
__guac_common_bound_rect(surface, &rect, &sx, &sy);
if (w <= 0 || h <= 0)
return;
/* Update backing surface */
__guac_common_surface_put(buffer, stride, sx, sy, surface, &x, &y, &w, &h, format != CAIRO_FORMAT_ARGB32);
__guac_common_surface_put(buffer, stride, sx, sy, surface, &rect, format != CAIRO_FORMAT_ARGB32);
if (w <= 0 || h <= 0)
return;
/* Flush if not combining */
if (!__guac_common_should_combine(surface, x, y, w, h, 0))
if (!__guac_common_should_combine(surface, &rect, 0))
guac_common_surface_flush_deferred(surface);
/* Always defer draws */
__guac_common_mark_dirty(surface, x, y, w, h);
__guac_common_mark_dirty(surface, &rect);
}
@ -768,20 +691,23 @@ void guac_common_surface_paint(guac_common_surface* surface, int x, int y, cairo
int sx = 0;
int sy = 0;
guac_common_rect rect;
guac_common_rect_init(&rect, x, y, w, h);
/* Clip operation */
__guac_common_bound_rect(surface, &x, &y, &w, &h, &sx, &sy);
__guac_common_bound_rect(surface, &rect, &sx, &sy);
if (w <= 0 || h <= 0)
return;
/* Update backing surface */
__guac_common_surface_fill_mask(buffer, stride, sx, sy, w, h, surface, x, y, red, green, blue);
__guac_common_surface_fill_mask(buffer, stride, sx, sy, surface, &rect, red, green, blue);
/* Flush if not combining */
if (!__guac_common_should_combine(surface, x, y, w, h, 0))
if (!__guac_common_should_combine(surface, &rect, 0))
guac_common_surface_flush_deferred(surface);
/* Always defer draws */
__guac_common_mark_dirty(surface, x, y, w, h);
__guac_common_mark_dirty(surface, &rect);
}
@ -792,23 +718,27 @@ void guac_common_surface_copy(guac_common_surface* src, int sx, int sy, int w, i
const guac_layer* src_layer = src->layer;
const guac_layer* dst_layer = dst->layer;
guac_common_rect rect;
guac_common_rect_init(&rect, dx, dy, w, h);
/* Clip operation */
__guac_common_bound_rect(dst, &dx, &dy, &w, &h, &sx, &sy);
__guac_common_bound_rect(dst, &rect, &sx, &sy);
if (w <= 0 || h <= 0)
return;
/* Update backing surface */
__guac_common_surface_transfer(src, sx, sy, w, h, GUAC_TRANSFER_BINARY_SRC, dst, dx, dy);
__guac_common_surface_transfer(src, sx, sy, GUAC_TRANSFER_BINARY_SRC, dst, &rect);
/* Defer if combining */
if (__guac_common_should_combine(dst, dx, dy, w, h, 1))
__guac_common_mark_dirty(dst, dx, dy, w, h);
if (__guac_common_should_combine(dst, &rect, 1))
__guac_common_mark_dirty(dst, &rect);
/* Otherwise, flush and draw immediately */
else {
guac_common_surface_flush(dst);
guac_common_surface_flush(src);
guac_protocol_send_copy(socket, src_layer, sx, sy, w, h, GUAC_COMP_OVER, dst_layer, dx, dy);
guac_protocol_send_copy(socket, src_layer, sx, sy, rect.width, rect.height,
GUAC_COMP_OVER, dst_layer, rect.x, rect.y);
dst->realized = 1;
}
@ -821,23 +751,26 @@ void guac_common_surface_transfer(guac_common_surface* src, int sx, int sy, int
const guac_layer* src_layer = src->layer;
const guac_layer* dst_layer = dst->layer;
guac_common_rect rect;
guac_common_rect_init(&rect, dx, dy, w, h);
/* Clip operation */
__guac_common_bound_rect(dst, &dx, &dy, &w, &h, &sx, &sy);
__guac_common_bound_rect(dst, &rect, &sx, &sy);
if (w <= 0 || h <= 0)
return;
/* Update backing surface */
__guac_common_surface_transfer(src, sx, sy, w, h, op, dst, dx, dy);
__guac_common_surface_transfer(src, sx, sy, op, dst, &rect);
/* Defer if combining */
if (__guac_common_should_combine(dst, dx, dy, w, h, 1))
__guac_common_mark_dirty(dst, dx, dy, w, h);
if (__guac_common_should_combine(dst, &rect, 1))
__guac_common_mark_dirty(dst, &rect);
/* Otherwise, flush and draw immediately */
else {
guac_common_surface_flush(dst);
guac_common_surface_flush(src);
guac_protocol_send_transfer(socket, src_layer, sx, sy, w, h, op, dst_layer, dx, dy);
guac_protocol_send_transfer(socket, src_layer, sx, sy, rect.width, rect.height, op, dst_layer, rect.x, rect.y);
dst->realized = 1;
}
@ -850,22 +783,25 @@ void guac_common_surface_rect(guac_common_surface* surface,
guac_socket* socket = surface->socket;
const guac_layer* layer = surface->layer;
guac_common_rect rect;
guac_common_rect_init(&rect, x, y, w, h);
/* Clip operation */
__guac_common_bound_rect(surface, &x, &y, &w, &h, NULL, NULL);
__guac_common_bound_rect(surface, &rect, NULL, NULL);
if (w <= 0 || h <= 0)
return;
/* Update backing surface */
__guac_common_surface_rect(surface, x, y, w, h, red, green, blue);
__guac_common_surface_rect(surface, &rect, red, green, blue);
/* Defer if combining */
if (__guac_common_should_combine(surface, x, y, w, h, 1))
__guac_common_mark_dirty(surface, x, y, w, h);
if (__guac_common_should_combine(surface, &rect, 1))
__guac_common_mark_dirty(surface, &rect);
/* Otherwise, flush and draw immediately */
else {
guac_common_surface_flush(surface);
guac_protocol_send_rect(socket, layer, x, y, w, h);
guac_protocol_send_rect(socket, layer, rect.x, rect.y, rect.width, rect.height);
guac_protocol_send_cfill(socket, GUAC_COMP_OVER, layer, red, green, blue, 0xFF);
surface->realized = 1;
}
@ -874,39 +810,15 @@ void guac_common_surface_rect(guac_common_surface* surface,
void guac_common_surface_clip(guac_common_surface* surface, int x, int y, int w, int h) {
/* Calculate extents of existing bounds rect */
int bounds_left = surface->bounds_x;
int bounds_top = surface->bounds_y;
int bounds_right = bounds_left + surface->bounds_width;
int bounds_bottom = bounds_top + surface->bounds_height;
guac_common_rect clip;
/* Calculate missing extents of given new rect */
int right = x + w;
int bottom = y + h;
/* Update maximums */
if (x > bounds_left) bounds_left = x;
if (y > bounds_top) bounds_top = y;
if (right < bounds_right) bounds_right = right;
if (bottom < bounds_bottom) bounds_bottom = bottom;
/* Commit rect */
surface->bounds_x = bounds_left;
surface->bounds_y = bounds_top;
surface->bounds_width = bounds_right - bounds_left;
surface->bounds_height = bounds_bottom - bounds_top;
/* Clamp dimensions at 0x0 */
if (surface->bounds_width < 0) surface->bounds_width = 0;
if (surface->bounds_height < 0) surface->bounds_height = 0;
guac_common_rect_init(&clip, x, y, w, h);
guac_common_rect_constrain(&surface->bounds_rect, &clip);
}
void guac_common_surface_reset_clip(guac_common_surface* surface) {
surface->bounds_x = 0;
surface->bounds_y = 0;
surface->bounds_width = surface->width;
surface->bounds_height = surface->height;
guac_common_rect_init(&surface->bounds_rect, 0, 0, surface->width, surface->height);
}
/**
@ -924,13 +836,14 @@ static void __guac_common_surface_flush_to_png(guac_common_surface* surface) {
const guac_layer* layer = surface->layer;
/* Get Cairo surface for specified rect */
unsigned char* buffer = surface->buffer + surface->dirty_y * surface->stride + surface->dirty_x * 4;
unsigned char* buffer = surface->buffer + surface->dirty_rect.y * surface->stride + surface->dirty_rect.x * 4;
cairo_surface_t* rect = cairo_image_surface_create_for_data(buffer, CAIRO_FORMAT_RGB24,
surface->dirty_width, surface->dirty_height,
surface->dirty_rect.width,
surface->dirty_rect.height,
surface->stride);
/* Send PNG for rect */
guac_protocol_send_png(socket, GUAC_COMP_OVER, layer, surface->dirty_x, surface->dirty_y, rect);
guac_protocol_send_png(socket, GUAC_COMP_OVER, layer, surface->dirty_rect.x, surface->dirty_rect.y, rect);
cairo_surface_destroy(rect);
surface->realized = 1;
@ -953,14 +866,14 @@ static int __guac_common_surface_png_rect_compare(const void* a, const void* b)
guac_common_surface_png_rect* rb = (guac_common_surface_png_rect*) b;
/* Order roughly top to bottom, left to right */
if (ra->y != rb->y) return ra->y - rb->y;
if (ra->x != rb->x) return ra->x - rb->x;
if (ra->rect.y != rb->rect.y) return ra->rect.y - rb->rect.y;
if (ra->rect.x != rb->rect.x) return ra->rect.x - rb->rect.x;
/* Wider updates should come first (more likely to intersect later) */
if (ra->width != rb->width) return rb->width - ra->width;
if (ra->rect.width != rb->rect.width) return rb->rect.width - ra->rect.width;
/* Shorter updates should come first (less likely to increase cost) */
return ra->height - rb->height;
return ra->rect.height - rb->rect.height;
}
@ -994,14 +907,9 @@ void guac_common_surface_flush(guac_common_surface* surface) {
if (!candidate->flushed) {
int x = candidate->x;
int y = candidate->y;
int w = candidate->width;
int h = candidate->height;
/* Combine if reasonable */
if (__guac_common_should_combine(surface, x, y, w, h, 0) || !surface->dirty) {
__guac_common_mark_dirty(surface, x, y, w, h);
if (__guac_common_should_combine(surface, &candidate->rect, 0) || !surface->dirty) {
__guac_common_mark_dirty(surface, &candidate->rect);
candidate->flushed = 1;
combined++;
}

65
src/common/guac_surface.h
View File

@ -24,6 +24,7 @@
#define __GUAC_COMMON_SURFACE_H
#include "config.h"
#include "guac_rect.h"
#include <cairo/cairo.h>
#include <guacamole/layer.h>
@ -38,7 +39,8 @@
#define GUAC_COMMON_SURFACE_QUEUE_SIZE 256
/**
* Simple representation of a rectangle, having a defined corner and dimensions.
* Representation of a PNG update, having a rectangle of image data (stored
* elsewhere) and a flushed/not-flushed state.
*/
typedef struct guac_common_surface_png_rect {
@ -48,24 +50,9 @@ typedef struct guac_common_surface_png_rect {
int flushed;
/**
* The X coordinate of the upper-left corner of this rectangle.
* The rectangle containing the PNG update.
*/
int x;
/**
* The Y coordinate of the upper-left corner of this rectangle.
*/
int y;
/**
* The width of this rectangle.
*/
int width;
/**
* The height of this rectangle.
*/
int height;
guac_common_rect rect;
} guac_common_surface_png_rect;
@ -111,28 +98,9 @@ typedef struct guac_common_surface {
int dirty;
/**
* The X coordinate of the upper-left corner of the dirty rect. This
* value is undefined if the surface is unchanged (not dirty).
* The dirty rectangle.
*/
int dirty_x;
/**
* The Y coordinate of the upper-left corner of the dirty rect. This
* value is undefined if the surface is unchanged (not dirty).
*/
int dirty_y;
/**
* The width of the dirty rect. This value is undefined if the surface is
* unchanged (not dirty).
*/
int dirty_width;
/**
* The height of the dirty rect. This value is undefined if the surface
* is unchanged (not dirty).
*/
int dirty_height;
guac_common_rect dirty_rect;
/**
* Whether the surface actually exists on the client.
@ -140,24 +108,9 @@ typedef struct guac_common_surface {
int realized;
/**
* The X coordinate of the upper-left corner of the bounding rectangle.
* The bounding rectangle.
*/
int bounds_x;
/**
* The Y coordinate of the upper-left corner of the bounding rectangle.
*/
int bounds_y;
/**
* The width of the bounding rectangle.
*/
int bounds_width;
/**
* The height of the bounding rectangle.
*/
int bounds_height;
guac_common_rect bounds_rect;
/**
* The number of updates in the PNG queue.