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properly set up shadow buffer's pitch and bug fix on eink update

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previously, counters never reach 0!
This commit is contained in:
Qingping Hou
2013-02-18 15:48:33 +08:00
parent c43053605f
commit 5edc2db12b
1 changed files with 9 additions and 9 deletions
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18
einkfb.c
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@@ -41,8 +41,8 @@ inline void fbInvert4BppTo8Bpp(FBInfo *fb) {
fb_pitch = fb->real_buf->pitch;
/* copy bitmap from 4bpp shadow blitbuffer to framebuffer */
for (i = (h-1); i > 0; i--) {
for (j = (w-1)/2; j > 0; j--) {
for (i = (h-1); i >= 0; i--) {
for (j = (w-1)/2; j >= 0; j--) {
fb_buf[i*fb_pitch + j*2] = shadow_buf[i*pitch + j];
fb_buf[i*fb_pitch + j*2] &= 0xF0;
fb_buf[i*fb_pitch + j*2] |= shadow_buf[i*pitch + j]>>4 & 0x0F;
@@ -60,18 +60,18 @@ inline void fb4BppTo8Bpp(FBInfo *fb) {
shadow_buf = fb->buf->data;
fb_buf = fb->real_buf->data;
/* h is 1024 for PaperWhite */
/* h is 1024 for PaperWhite's shadow buffer */
h = fb->buf->h;
/* w is 758 for PaperWhite */
/* w is 758 for PaperWhite's shadow buffer */
w = fb->buf->w;
/* pitch is 384 for shadow buffer */
/* pitch is 376 for shadow buffer */
pitch = fb->buf->pitch;
/* pitch is 768 for PaperWhite */
/* pitch is 768 for PaperWhite's framebuffer */
fb_pitch = fb->real_buf->pitch;
/* copy bitmap from 4bpp shadow blitbuffer to framebuffer */
for (i = (h-1); i > 0; i--) {
for (j = (w-1)/2; j > 0; j--) {
for (i = (h-1); i >= 0; i--) {
for (j = (w-1)/2; j >= 0; j--) {
fb_buf[i*fb_pitch + j*2] = shadow_buf[i*pitch + j];
fb_buf[i*fb_pitch + j*2] &= 0xF0;
fb_buf[i*fb_pitch + j*2] |= shadow_buf[i*pitch + j]>>4 & 0x0F;
@@ -225,7 +225,7 @@ static int openFrameBuffer(lua_State *L) {
/* for 8bpp K4, PaperWhite, we create a shadow 4bpp blitbuffer. These
* models use 16 scale 8bpp framebuffer, so we still cheat it as 4bpp
* */
fb->buf->pitch = fb->finfo.line_length / 2;
fb->buf->pitch = fb->vinfo.xres / 2;
fb->buf->data = (uint8_t *)calloc(fb->buf->pitch * fb->vinfo.yres, sizeof(uint8_t));
if (!fb->buf->data) {