forked from len0rd/rockbox
Grayscale library ported to the grayscale iPods, first version. Added C reference versions of gray_update_rect() for both horizontal and vertical pixel packing. gray_update_rect() and gray_ub_gray_bitmap_part() not yet assembler optimised. Grayscale screendump doesn't work yet. * Fixed button assignments for iPod in grayscale.c
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10468 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold
parent
5375e26e51
commit
c214e7bb0c
20 changed files with 1360 additions and 232 deletions
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@ -11,7 +11,8 @@
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* Scrolling routines
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*
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* This is a generic framework to display up to 33 shades of grey
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* on low-depth bitmap LCDs (Archos b&w, Iriver 4-grey) within plugins.
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* on low-depth bitmap LCDs (Archos b&w, Iriver 4-grey, iPod 4-grey)
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* within plugins.
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*
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* Copyright (C) 2004-2006 Jens Arnold
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*
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@ -30,6 +31,96 @@
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/*** Scrolling ***/
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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/* Scroll left */
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void gray_scroll_left(int count)
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{
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unsigned char *data, *data_end;
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int length, blank;
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if ((unsigned)count >= (unsigned)_gray_info.width)
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return;
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data = _gray_info.cur_buffer;
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data_end = data + MULU16(_gray_info.width, _gray_info.height);
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length = _gray_info.width - count;
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blank = (_gray_info.drawmode & DRMODE_INVERSEVID) ?
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_gray_info.fg_index : _gray_info.bg_index;
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do
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{
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_gray_rb->memmove(data, data + count, length);
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_gray_rb->memset(data + length, blank, count);
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data += _gray_info.width;
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}
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while (data < data_end);
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}
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/* Scroll right */
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void gray_scroll_right(int count)
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{
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unsigned char *data, *data_end;
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int length, blank;
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if ((unsigned)count >= (unsigned)_gray_info.width)
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return;
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data = _gray_info.cur_buffer;
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data_end = data + MULU16(_gray_info.width, _gray_info.height);
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length = _gray_info.width - count;
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blank = (_gray_info.drawmode & DRMODE_INVERSEVID) ?
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_gray_info.fg_index : _gray_info.bg_index;
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do
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{
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_gray_rb->memmove(data + count, data, length);
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_gray_rb->memset(data, blank, count);
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data += _gray_info.width;
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}
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while (data < data_end);
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}
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/* Scroll up */
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void gray_scroll_up(int count)
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{
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long shift, length;
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int blank;
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if ((unsigned)count >= (unsigned)_gray_info.height)
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return;
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shift = MULU16(_gray_info.width, count);
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length = MULU16(_gray_info.width, _gray_info.height - count);
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blank = (_gray_info.drawmode & DRMODE_INVERSEVID) ?
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_gray_info.fg_index : _gray_info.bg_index;
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_gray_rb->memmove(_gray_info.cur_buffer, _gray_info.cur_buffer + shift,
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length);
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_gray_rb->memset(_gray_info.cur_buffer + length, blank, shift);
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}
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/* Scroll down */
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void gray_scroll_down(int count)
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{
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long shift, length;
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int blank;
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if ((unsigned)count >= (unsigned)_gray_info.height)
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return;
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shift = MULU16(_gray_info.width, count);
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length = MULU16(_gray_info.width, _gray_info.height - count);
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blank = (_gray_info.drawmode & DRMODE_INVERSEVID) ?
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_gray_info.fg_index : _gray_info.bg_index;
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_gray_rb->memmove(_gray_info.cur_buffer + shift, _gray_info.cur_buffer,
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length);
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_gray_rb->memset(_gray_info.cur_buffer, blank, shift);
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}
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#else /* LCD_PIXELFORMAT == VERTICAL_PACKING */
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/* Scroll left */
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void gray_scroll_left(int count)
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{
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@ -44,7 +135,8 @@ void gray_scroll_left(int count)
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blank = (_gray_info.drawmode & DRMODE_INVERSEVID) ?
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_gray_info.fg_index : _gray_info.bg_index;
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_gray_rb->memmove(_gray_info.cur_buffer, _gray_info.cur_buffer + shift, length);
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_gray_rb->memmove(_gray_info.cur_buffer, _gray_info.cur_buffer + shift,
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length);
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_gray_rb->memset(_gray_info.cur_buffer + length, blank, shift);
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}
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@ -62,7 +154,8 @@ void gray_scroll_right(int count)
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blank = (_gray_info.drawmode & DRMODE_INVERSEVID) ?
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_gray_info.fg_index : _gray_info.bg_index;
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_gray_rb->memmove(_gray_info.cur_buffer + shift, _gray_info.cur_buffer, length);
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_gray_rb->memmove(_gray_info.cur_buffer + shift, _gray_info.cur_buffer,
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length);
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_gray_rb->memset(_gray_info.cur_buffer, blank, shift);
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}
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@ -113,6 +206,7 @@ void gray_scroll_down(int count)
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}
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while (data < data_end);
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}
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#endif /* LCD_PIXELFORMAT */
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/*** Unbuffered scrolling functions ***/
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@ -148,6 +242,260 @@ void gray_ub_scroll_down(int count)
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#else /* !SIMULATOR */
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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/* Scroll left */
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void gray_ub_scroll_left(int count)
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{
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int shift, length;
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unsigned char *ptr, *ptr_end;
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if ((unsigned) count >= (unsigned) _gray_info.width)
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return;
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shift = count >> 3;
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count &= 7;
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if (shift)
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{
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length = _gray_info.bwidth - shift;
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ptr = _gray_info.plane_data;
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ptr_end = ptr + _gray_info.plane_size;
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/* Scroll row by row to minimize flicker */
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do
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{
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unsigned char *ptr_row = ptr;
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unsigned char *row_end = ptr_row
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+ MULU16(_gray_info.plane_size, _gray_info.depth);
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do
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{
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_gray_rb->memmove(ptr_row, ptr_row + shift, length);
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_gray_rb->memset(ptr_row + length, 0, shift);
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ptr_row += _gray_info.plane_size;
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}
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while (ptr_row < row_end);
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ptr += _gray_info.bwidth;
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}
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while (ptr < ptr_end);
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}
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if (count)
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{
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asm (
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"mov r4, %[high] \n"
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".sl_rloop: \n"
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"mov r5, %[addr] \n"
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"mov r2, %[dpth] \n"
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".sl_oloop: \n"
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"mov r6, r5 \n"
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"mov r3, %[cols] \n"
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"mov r1, #0 \n"
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".sl_iloop: \n"
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"mov r1, r1, lsr #8 \n"
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"ldrb r0, [r6, #-1]! \n"
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"orr r1, r1, r0, lsl %[cnt] \n"
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"strb r1, [r6] \n"
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"subs r3, r3, #1 \n"
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"bne .sl_iloop \n"
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"add r5, r5, %[psiz] \n"
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"subs r2, r2, #1 \n"
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"bne .sl_oloop \n"
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"add %[addr],%[addr],%[bwid] \n"
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"subs r4, r4, #1 \n"
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"bne .sl_rloop \n"
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: /* outputs */
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: /* inputs */
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[dpth]"r"(_gray_info.depth),
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[high]"r"(_gray_info.height),
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[bwid]"r"(_gray_info.bwidth),
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[cols]"r"(_gray_info.bwidth - shift),
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[psiz]"r"(_gray_info.plane_size),
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[addr]"r"(_gray_info.plane_data + _gray_info.bwidth - shift),
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[cnt] "r"(count)
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: /* clobbers */
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"r0", "r1", "r2", "r3", "r4", "r5", "r6"
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);
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}
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}
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/* Scroll right */
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void gray_ub_scroll_right(int count)
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{
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int shift, length;
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unsigned char *ptr, *ptr_end;
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if ((unsigned) count >= (unsigned) _gray_info.width)
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return;
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shift = count >> 3;
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count &= 7;
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if (shift)
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{
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length = _gray_info.bwidth - shift;
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ptr = _gray_info.plane_data;
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ptr_end = ptr + _gray_info.plane_size;
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/* Scroll row by row to minimize flicker */
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do
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{
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unsigned char *ptr_row = ptr;
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unsigned char *row_end = ptr_row
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+ MULU16(_gray_info.plane_size, _gray_info.depth);
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do
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{
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_gray_rb->memmove(ptr_row + shift, ptr_row, length);
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_gray_rb->memset(ptr_row, 0, shift);
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ptr_row += _gray_info.plane_size;
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}
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while (ptr_row < row_end);
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ptr += _gray_info.bwidth;
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}
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while (ptr < ptr_end);
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}
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if (count)
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{
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asm (
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"mov r4, %[high] \n"
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".sr_rloop: \n"
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"mov r5, %[addr] \n"
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"mov r2, %[dpth] \n"
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".sr_oloop: \n"
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"mov r6, r5 \n"
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"mov r3, %[cols] \n"
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"mov r1, #0 \n"
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".sr_iloop: \n"
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"ldrb r0, [r6] \n"
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"orr r1, r0, r1, lsl #8 \n"
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"mov r0, r1, lsr %[cnt] \n"
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"strb r0, [r6], #1 \n"
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"subs r3, r3, #1 \n"
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"bne .sr_iloop \n"
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"add r5, r5, %[psiz] \n"
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"subs r2, r2, #1 \n"
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"bne .sr_oloop \n"
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"add %[addr],%[addr],%[bwid] \n"
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"subs r4, r4, #1 \n"
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"bne .sr_rloop \n"
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: /* outputs */
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: /* inputs */
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[dpth]"r"(_gray_info.depth),
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[high]"r"(_gray_info.height),
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[bwid]"r"(_gray_info.bwidth),
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[cols]"r"(_gray_info.bwidth - shift),
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[psiz]"r"(_gray_info.plane_size),
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[addr]"r"(_gray_info.plane_data + shift),
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[cnt] "r"(count)
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: /* clobbers */
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"r0", "r1", "r2", "r3", "r4", "r5", "r6"
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);
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}
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}
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/* Scroll up */
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void gray_ub_scroll_up(int count)
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{
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long blockshift;
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unsigned char *ptr, *ptr_end1, *ptr_end2;
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if ((unsigned) count >= (unsigned) _gray_info.height)
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return;
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blockshift = MULU16(_gray_info.bwidth, count);
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ptr = _gray_info.plane_data;
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ptr_end2 = ptr + _gray_info.plane_size;
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ptr_end1 = ptr_end2 - blockshift;
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/* Scroll row by row to minimize flicker */
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do
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{
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unsigned char *ptr_row = ptr;
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unsigned char *row_end = ptr_row
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+ MULU16(_gray_info.plane_size, _gray_info.depth);
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if (ptr < ptr_end1)
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{
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do
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{
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_gray_rb->memcpy(ptr_row, ptr_row + blockshift,
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_gray_info.bwidth);
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ptr_row += _gray_info.plane_size;
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}
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while (ptr_row < row_end);
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}
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else
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{
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do
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{
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_gray_rb->memset(ptr_row, 0, _gray_info.bwidth);
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ptr_row += _gray_info.plane_size;
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}
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while (ptr_row < row_end);
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}
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ptr += _gray_info.bwidth;
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}
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while (ptr < ptr_end2);
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}
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/* Scroll down */
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void gray_ub_scroll_down(int count)
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{
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long blockshift;
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unsigned char *ptr, *ptr_end1, *ptr_end2;
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if ((unsigned) count >= (unsigned) _gray_info.height)
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return;
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blockshift = MULU16(_gray_info.bwidth, count);
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ptr_end2 = _gray_info.plane_data;
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ptr_end1 = ptr_end2 + blockshift;
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ptr = ptr_end2 + _gray_info.plane_size;
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/* Scroll row by row to minimize flicker */
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do
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{
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unsigned char *ptr_row, *row_end;
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ptr -= _gray_info.bwidth;
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ptr_row = ptr;
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row_end = ptr_row + MULU16(_gray_info.plane_size, _gray_info.depth);
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if (ptr >= ptr_end1)
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{
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do
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{
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_gray_rb->memcpy(ptr_row, ptr_row - blockshift,
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_gray_info.bwidth);
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ptr_row += _gray_info.plane_size;
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}
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while (ptr_row < row_end);
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}
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else
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{
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do
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{
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_gray_rb->memset(ptr_row, 0, _gray_info.bwidth);
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ptr_row += _gray_info.plane_size;
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}
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while (ptr_row < row_end);
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}
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}
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while (ptr > ptr_end2);
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}
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#else /* LCD_PIXELFORMAT == VERTICAL_PACKING */
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/* Scroll left */
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void gray_ub_scroll_left(int count)
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{
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@ -156,17 +504,17 @@ void gray_ub_scroll_left(int count)
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if ((unsigned) count >= (unsigned) _gray_info.width)
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return;
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length = _gray_info.width - count;
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ptr = _gray_info.plane_data;
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ptr_end = ptr + _gray_info.plane_size;
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/* Scroll row by row to minimize flicker (pixel block rows) */
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do
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{
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unsigned char *ptr_row = ptr;
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unsigned char *row_end = ptr_row
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+ MULU16(_gray_info.plane_size, _gray_info.depth);
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unsigned char *row_end = ptr_row
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+ MULU16(_gray_info.plane_size, _gray_info.depth);
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do
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{
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_gray_rb->memmove(ptr_row, ptr_row + count, length);
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@ -188,17 +536,17 @@ void gray_ub_scroll_right(int count)
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if ((unsigned) count >= (unsigned) _gray_info.width)
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return;
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length = _gray_info.width - count;
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ptr = _gray_info.plane_data;
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ptr_end = ptr + _gray_info.plane_size;
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/* Scroll row by row to minimize flicker (pixel block rows) */
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do
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{
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unsigned char *ptr_row = ptr;
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unsigned char *row_end = ptr_row
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+ MULU16(_gray_info.plane_size, _gray_info.depth);
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unsigned char *row_end = ptr_row
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+ MULU16(_gray_info.plane_size, _gray_info.depth);
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do
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{
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_gray_rb->memmove(ptr_row + count, ptr_row, length);
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@ -221,10 +569,10 @@ void gray_ub_scroll_up(int count)
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if ((unsigned) count >= (unsigned) _gray_info.height)
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return;
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shift = count >> _PBLOCK_EXP;
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count &= (_PBLOCK-1);
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shift = count >> 3;
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count &= 7;
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if (shift)
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{
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blockshift = MULU16(_gray_info.width, shift);
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@ -235,7 +583,7 @@ void gray_ub_scroll_up(int count)
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do
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{
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unsigned char *ptr_row = ptr;
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unsigned char *row_end = ptr_row
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unsigned char *row_end = ptr_row
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+ MULU16(_gray_info.plane_size, _gray_info.depth);
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if (ptr < ptr_end1)
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{
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@ -263,7 +611,7 @@ void gray_ub_scroll_up(int count)
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}
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if (count)
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{
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#if (CONFIG_CPU == SH7034) && (LCD_DEPTH == 1)
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#if CONFIG_CPU == SH7034
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/* scroll column by column to minimize flicker */
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asm (
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"mov #0,r6 \n" /* x = 0 */
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|
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@ -345,7 +693,7 @@ void gray_ub_scroll_up(int count)
|
|||
: /* clobbers */
|
||||
"r0", "r1", "r2", "r3", "r4", "r5", "r6"
|
||||
);
|
||||
#elif defined(CPU_COLDFIRE) && (LCD_DEPTH == 2)
|
||||
#elif defined(CPU_COLDFIRE)
|
||||
/* scroll column by column to minimize flicker */
|
||||
asm (
|
||||
"move.l %[wide],%%d4\n" /* columns = width */
|
||||
|
|
@ -406,9 +754,9 @@ void gray_ub_scroll_down(int count)
|
|||
if ((unsigned) count >= (unsigned) _gray_info.height)
|
||||
return;
|
||||
|
||||
shift = count >> _PBLOCK_EXP;
|
||||
count &= (_PBLOCK-1);
|
||||
|
||||
shift = count >> 3;
|
||||
count &= 7;
|
||||
|
||||
if (shift)
|
||||
{
|
||||
blockshift = MULU16(_gray_info.width, shift);
|
||||
|
|
@ -448,7 +796,7 @@ void gray_ub_scroll_down(int count)
|
|||
}
|
||||
if (count)
|
||||
{
|
||||
#if (CONFIG_CPU == SH7034) && (LCD_DEPTH == 1)
|
||||
#if CONFIG_CPU == SH7034
|
||||
/* scroll column by column to minimize flicker */
|
||||
asm (
|
||||
"mov #0,r6 \n" /* x = 0 */
|
||||
|
|
@ -529,7 +877,7 @@ void gray_ub_scroll_down(int count)
|
|||
: /* clobbers */
|
||||
"r0", "r1", "r2", "r3", "r4", "r5", "r6"
|
||||
);
|
||||
#elif defined(CPU_COLDFIRE) && (LCD_DEPTH == 2)
|
||||
#elif defined(CPU_COLDFIRE)
|
||||
/* scroll column by column to minimize flicker */
|
||||
asm (
|
||||
"move.l %[wide],%%d4\n" /* columns = width */
|
||||
|
|
@ -576,7 +924,8 @@ void gray_ub_scroll_down(int count)
|
|||
#endif
|
||||
}
|
||||
}
|
||||
#endif /* LCD_PIXELFORMAT */
|
||||
|
||||
#endif /* !SIMULATOR */
|
||||
|
||||
#endif /* HAVE_LCD_BITMAP */
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue