mirrors/neutrino
1
0
Fork 0
mirror of https://github.com/tuxbox-neutrino/neutrino.git synced 2025-08-27 15:32:59 +02:00
Code Issues Packages Projects Releases Wiki Activity

fb_generic: blit2FB: implement "transp" parameter

Browse Source 
also try to document the calling convention of this function
This commit is contained in:
Stefan Seyfried
2018-02-24 23:58:38 +01:00
committed by Thilo Graf
parent dae2539f9c
commit 0b9a3a44c9
1 changed files with 45 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

53
src/driver/fb_generic.cpp
View File

@@ -4,7 +4,7 @@
Copyright (C) 2001 Steffen Hehn 'McClean'
2003 thegoodguy
Copyright (C) 2009-2012,2017 Stefan Seyfried <seife@tuxboxcvs.slipkontur.de>
Copyright (C) 2009-2012,2017-2018 Stefan Seyfried <seife@tuxboxcvs.slipkontur.de>
mute icon & info clock handling
Copyright (C) 2013 M. Liebmann (micha-bbg)
@@ -60,6 +60,7 @@ extern CPictureViewer * g_PicViewer;
#define ICON_CACHE_SIZE 1024*1024*2 // 2mb
#define BACKGROUNDIMAGEWIDTH 720
#define LOGTAG "[fb_generic] "
void CFrameBuffer::waitForIdle(const char *)
{
@@ -172,7 +173,7 @@ void CFrameBuffer::init(const char * const fbDevice)
}
available=fix.smem_len;
printf("[fb_generic] [%s] framebuffer %dk video mem\n", fix.id, available/1024);
printf(LOGTAG "[%s] framebuffer %dk video mem\n", fix.id, available/1024);
lbb = lfb = (fb_pixel_t*)mmap(0, available, PROT_WRITE|PROT_READ, MAP_SHARED, fd, 0);
if (!lfb) {
perror("mmap");
@@ -1677,22 +1678,58 @@ void CFrameBuffer::fbCopyArea(uint32_t width, uint32_t height, uint32_t dst_x, u
}
}
void CFrameBuffer::blit2FB(void *fbbuff, uint32_t width, uint32_t height, uint32_t xoff, uint32_t yoff, uint32_t xp, uint32_t yp, bool /*transp*/)
/*
* source surface:
* |<-------width----------------------->|
* |<---------xp------------>| |
* +-------------------------+-----------+----
* | | | ^ ^
* | | | | |
* | | | y h
* | | | p e
* | | | v i
* | +-----------+-- g
* | |###########| h
* | |###########| t
* | |###########| |
* | |###########| v
* +-------------------------+-----------+----
* xoff, yoff is the offset into the *target* (framebuffer) surface.
* transp == false (default): alpha blend src and dst, transp == true => just copy over src to dest
*/
void CFrameBuffer::blit2FB(void *fbbuff, uint32_t width, uint32_t height, uint32_t xoff, uint32_t yoff, uint32_t xp, uint32_t yp, bool transp)
{
int xc, yc;
uint32_t xc, yc;
xc = (width > xRes) ? xRes : width;
yc = (height > yRes) ? yRes : height;
if (xp >= xc || yp >= yc) {
printf(LOGTAG "%s: invalid parameters, xc: %u <= xp: %u or yc: %u <= yp: %u\n", __func__, xc, xp, yc, yp);
return;
}
fb_pixel_t* data = (fb_pixel_t *) fbbuff;
fb_pixel_t * d = getFrameBufferPointer() + xoff + swidth * yoff;
if (transp) {
fb_pixel_t *pixpos = data + yp * width;
int len = (xc - xp) * sizeof(fb_pixel_t);
if (width == xRes && swidth == xRes && xoff == 0 && xp == 0) {
memmove(d, pixpos, (yc - yp) * len);
return;
}
for (uint32_t count = 0; count < yc - yp; count++) {
memmove(d, pixpos + xp, len);
d += swidth;
pixpos += width;
}
return;
}
fb_pixel_t * d2;
for (int count = 0; count < yc; count++ ) {
for (uint32_t count = 0; count < yc - yp; count++ ) {
fb_pixel_t *pixpos = &data[(count + yp) * width];
d2 = (fb_pixel_t *) d;
for (int count2 = 0; count2 < xc; count2++ ) {
for (uint32_t count2 = 0; count2 < xc - xp; count2++ ) {
fb_pixel_t pix = *(pixpos + xp);
if ((pix & 0xff000000) == 0xff000000)
*d2 = pix;