lcd_framebuffer bugfixes, sanity checks
several issues I saw that could pontentially cause problems scroll engine doesn't take text height into account when checking bounds NBELEMS was one whole row too large hopefully I got them right this time Change-Id: If303da8320429c3964fc675351cb088d46303745
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202f9df0c1
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60f642ba4f
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@ -81,11 +81,12 @@ void lcd_clear_viewport(void)
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}
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else
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{
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if (!lcd_backdrop)
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if (lcd_backdrop && lcd_current_viewport->buffer == &lcd_framebuffer_default)
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{
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do
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{
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memset16(dst, lcd_current_viewport->bg_pattern, len);
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memcpy(dst, PTR_ADD(dst, lcd_backdrop_offset),
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len * sizeof(fb_data));
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dst += step;
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}
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while (dst <= dst_end);
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@ -94,8 +95,7 @@ void lcd_clear_viewport(void)
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{
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do
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{
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memcpy(dst, PTR_ADD(dst, lcd_backdrop_offset),
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len * sizeof(fb_data));
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memset16(dst, lcd_current_viewport->bg_pattern, len);
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dst += step;
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}
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while (dst <= dst_end);
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@ -38,6 +38,9 @@
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#include "bidi.h"
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#include "scroll_engine.h"
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/*#define LOGF_ENABLE*/
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#include "logf.h"
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#define ROW_INC 1
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#define COL_INC lcd_current_viewport->buffer->stride
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@ -38,6 +38,9 @@
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#include "bidi.h"
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#include "scroll_engine.h"
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// #define LOGF_ENABLE
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#include "logf.h"
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#define ROW_INC lcd_current_viewport->buffer->stride
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#define COL_INC 1
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@ -39,6 +39,9 @@
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#include "bidi.h"
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#include "scroll_engine.h"
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/*#define LOGF_ENABLE*/
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#include "logf.h"
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#define ROW_INC lcd_current_viewport->buffer->stride
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#define COL_INC 1
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@ -32,6 +32,10 @@
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#include "string-extra.h"
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#include "diacritic.h"
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#ifdef LOGF_ENABLE
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#include "panic.h"
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#endif
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#ifndef LCDFN /* Not compiling for remote - define macros for main LCD. */
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#define LCDFN(fn) lcd_ ## fn
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#define FBFN(fn) fb_ ## fn
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@ -77,7 +81,10 @@ struct viewport* LCDFN(init_viewport)(struct viewport* vp)
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{
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struct frame_buffer_t *fb_default = &LCDFN(framebuffer_default);
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if (!vp) /* NULL vp grabs default viewport */
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{
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vp = &default_vp;
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vp->buffer = fb_default;
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}
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/* use defaults if no buffer is provided */
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if (vp->buffer == NULL || vp->buffer->elems == 0)
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@ -92,6 +99,19 @@ struct viewport* LCDFN(init_viewport)(struct viewport* vp)
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if (vp->buffer->get_address_fn == NULL)
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vp->buffer->get_address_fn = fb_default->get_address_fn;
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#ifdef LOGF_ENABLE
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if ((size_t)LCD_NBELEMS(vp->width, vp->height) > vp->buffer->elems)
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{
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if (vp->buffer != fb_default)
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panicf("viewport %d x %d > buffer", vp->width, vp->height);
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logf("viewport %d x %d, %d x %d [%lu] > buffer [%lu]", vp->x, vp->y,
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vp->width, vp->height,
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(unsigned long) LCD_NBELEMS(vp->width, vp->height),
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(unsigned long) vp->buffer->elems);
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}
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#endif
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}
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return vp;
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}
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@ -474,32 +494,34 @@ static bool LCDFN(puts_scroll_worker)(int x, int y, const unsigned char *string,
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int width, height;
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int w, h, cwidth;
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bool restart;
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struct viewport * vp = LCDFN(current_viewport);
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if (!string)
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return false;
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/* prepare rectangle for scrolling. x and y must be calculated early
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* for find_scrolling_line() to work */
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cwidth = font_get(LCDFN(current_viewport)->font)->maxwidth;
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height = font_get(LCDFN(current_viewport)->font)->height;
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cwidth = font_get(vp->font)->maxwidth;
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/* get width (pixels) of the string */
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LCDFN(getstringsize)(string, &w, &h);
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height = h;
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y = y * (linebased ? height : 1);
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x = x * (linebased ? cwidth : 1);
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width = LCDFN(current_viewport)->width - x;
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width = vp->width - x;
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if (y >= LCDFN(current_viewport)->height)
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if (y >= vp->height || (height + y) > (vp->height))
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return false;
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s = find_scrolling_line(x, y);
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restart = !s;
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/* get width (pixeks) of the string */
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LCDFN(getstringsize)(string, &w, &h);
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/* Remove any previously scrolling line at the same location. If
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* the string width is too small to scroll the scrolling line is
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* cleared as well */
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if (w < width || restart) {
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LCDFN(scroll_stop_viewport_rect)(LCDFN(current_viewport), x, y, width, height);
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LCDFN(scroll_stop_viewport_rect)(vp, x, y, width, height);
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LCDFN(putsxyofs)(x, y, x_offset, string);
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/* nothing to scroll, or out of scrolling lines. Either way, get out */
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if (w < width || LCDFN(scroll_info).lines >= LCDM(SCROLLABLE_LINES))
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@ -512,7 +534,7 @@ static bool LCDFN(puts_scroll_worker)(int x, int y, const unsigned char *string,
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strlcpy(s->linebuffer, string, sizeof(s->linebuffer));
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/* scroll bidirectional or forward only depending on the string width */
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if ( LCDFN(scroll_info).bidir_limit ) {
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s->bidir = w < (LCDFN(current_viewport)->width) *
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s->bidir = w < (vp->width) *
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(100 + LCDFN(scroll_info).bidir_limit) / 100;
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}
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else
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@ -526,7 +548,7 @@ static bool LCDFN(puts_scroll_worker)(int x, int y, const unsigned char *string,
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s->y = y;
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s->width = width;
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s->height = height;
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s->vp = LCDFN(current_viewport);
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s->vp = vp;
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s->start_tick = current_tick + LCDFN(scroll_info).delay;
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LCDFN(scroll_info).lines++;
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} else {
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@ -63,13 +63,13 @@
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#define LCD_REMOTE_STRIDE(w, h) (h)
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#define LCD_REMOTE_FBSTRIDE(w, h) ((h+7)/8)
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#define LCD_REMOTE_FBHEIGHT LCD_REMOTE_FBSTRIDE(LCD_REMOTE_WIDTH, LCD_REMOTE_HEIGHT)
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#define LCD_REMOTE_NBELEMS(w, h) (((w*LCD_REMOTE_FBSTRIDE(w, h)) + h) / sizeof(fb_remote_data))
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#define LCD_REMOTE_NBELEMS(w, h) ((((w-1)*LCD_REMOTE_FBSTRIDE(w, h)) + h) / sizeof(fb_remote_data))
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#elif LCD_REMOTE_DEPTH == 2
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#if LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED
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#define LCD_REMOTE_STRIDE(w, h) (h)
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#define LCD_REMOTE_FBSTRIDE(w, h) ((h+7)/8)
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#define LCD_REMOTE_FBHEIGHT LCD_REMOTE_FBSTRIDE(LCD_REMOTE_WIDTH, LCD_REMOTE_HEIGHT)
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#define LCD_REMOTE_NBELEMS(w, h) (((w*LCD_REMOTE_FBSTRIDE(w, h)) + h) / sizeof(fb_remote_data))
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#define LCD_REMOTE_NBELEMS(w, h) ((((w-1)*LCD_REMOTE_FBSTRIDE(w, h)) + h) / sizeof(fb_remote_data))
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#endif
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#endif /* LCD_REMOTE_DEPTH */
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@ -84,7 +84,7 @@
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#ifndef LCD_REMOTE_NBELEMS
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/* At this time (2020) known remote screens only have vertical stride */
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#define LCD_REMOTE_NBELEMS(w, h) ((w*STRIDE_REMOTE(w, h)) + h) / sizeof(fb_remote_data))
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#define LCD_REMOTE_NBELEMS(w, h) (((w-1)*STRIDE_REMOTE(w, h)) + h) / sizeof(fb_remote_data))
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#define LCD_REMOTE_STRIDE(w, h) STRIDE_REMOTE(w, h)
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#define LCD_REMOTE_FBSTRIDE(w, h) STRIDE_REMOTE(w, h)
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#endif
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@ -456,26 +456,26 @@ typedef void lcd_blockfunc_type(fb_data *address, unsigned mask, unsigned bits);
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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#define LCD_FBSTRIDE(w, h) ((w+7)/8)
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#define LCD_FBWIDTH LCD_FBSTRIDE(LCD_WIDTH, LCD_HEIGHT)
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#define LCD_NBELEMS(w, h) (((h*LCD_FBSTRIDE(w, h)) + w) / sizeof(fb_data))
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#define LCD_NBELEMS(w, h) ((((h-1)*LCD_FBSTRIDE(w, h)) + w) / sizeof(fb_data))
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#else /* LCD_PIXELFORMAT == VERTICAL_PACKING */
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#define LCD_FBSTRIDE(w, h) ((h+7)/8)
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#define LCD_FBHEIGHT LCD_FBSTRIDE(LCD_WIDTH, LCD_HEIGHT)
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#define LCD_NBELEMS(w, h) (((w*LCD_FBSTRIDE(w, h)) + h) / sizeof(fb_data))
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#define LCD_NBELEMS(w, h) ((((w-1)*LCD_FBSTRIDE(w, h)) + h) / sizeof(fb_data))
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#endif /* LCD_PIXELFORMAT */
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#elif LCD_DEPTH == 2
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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#define LCD_FBSTRIDE(w, h) ((w+3)>>2)
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#define LCD_NATIVE_STRIDE(s) LCD_FBSTRIDE(s, s)
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#define LCD_FBWIDTH LCD_FBSTRIDE(LCD_WIDTH, LCD_HEIGHT)
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#define LCD_NBELEMS(w, h) (((h*LCD_FBSTRIDE(w, h)) + w) / sizeof(fb_data))
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#define LCD_NBELEMS(w, h) ((((h-1)*LCD_FBSTRIDE(w, h)) + w) / sizeof(fb_data))
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#elif LCD_PIXELFORMAT == VERTICAL_PACKING
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#define LCD_FBSTRIDE(w, h) ((h+3)/4)
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#define LCD_FBHEIGHT LCD_FBSTRIDE(LCD_WIDTH, LCD_HEIGHT)
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#define LCD_NBELEMS(w, h) (((w*LCD_FBSTRIDE(w, h)) + h) / sizeof(fb_data))
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#define LCD_NBELEMS(w, h) ((((w-1)*LCD_FBSTRIDE(w, h)) + h) / sizeof(fb_data))
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#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
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#define LCD_FBSTRIDE(w, h) ((h+7)/8)
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#define LCD_FBHEIGHT LCD_FBSTRIDE(LCD_WIDTH, LCD_HEIGHT)
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#define LCD_NBELEMS(w, h) (((w*LCD_FBSTRIDE(w, h)) + h) / sizeof(fb_data))
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#define LCD_NBELEMS(w, h) ((((w-1)*LCD_FBSTRIDE(w, h)) + h) / sizeof(fb_data))
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#endif /* LCD_PIXELFORMAT */
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#endif /* LCD_DEPTH */
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/* Set defaults if not defined different yet. The defaults apply to both
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@ -494,9 +494,9 @@ typedef void lcd_blockfunc_type(fb_data *address, unsigned mask, unsigned bits);
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#ifndef LCD_NBELEMS
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#if defined(LCD_STRIDEFORMAT) && LCD_STRIDEFORMAT == VERTICAL_STRIDE
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#define LCD_NBELEMS(w, h) ((w*STRIDE_MAIN(w, h)) + h)
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#define LCD_NBELEMS(w, h) (((w-1)*STRIDE_MAIN(w, h)) + h)
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#else
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#define LCD_NBELEMS(w, h) ((h*STRIDE_MAIN(w, h)) + w)
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#define LCD_NBELEMS(w, h) (((h-1)*STRIDE_MAIN(w, h)) + w)
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#endif
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#define LCD_FBSTRIDE(w, h) STRIDE_MAIN(w, h)
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#endif
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