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Cleanup of the screendump routine. More similar operation for the various LCD depths, and a bit smaller code.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8074 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-11-26 23:50:24 +00:00
parent 4efecf6435
commit 4205407b8a
1 changed files with 40 additions and 34 deletions
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74
apps/misc.c
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@ -292,20 +292,12 @@ void screen_dump(void)
int fh;
char filename[MAX_PATH];
int bx, by;
#if LCD_DEPTH < 16
int iy;
int src_byte;
#endif
#if LCD_DEPTH == 1
int ix, src_mask, dst_mask;
static unsigned char line_block[8][BMP_LINESIZE];
#elif LCD_DEPTH == 2
int src_byte2;
static unsigned char line_block[4][BMP_LINESIZE];
#elif LCD_DEPTH == 16
static unsigned short line_block[BMP_LINESIZE/2];
unsigned short* dst;
unsigned short* src;
#endif
#ifdef HAVE_RTC
@ -330,58 +322,72 @@ void screen_dump(void)
#if LCD_DEPTH == 1
for (by = LCD_HEIGHT/8 - 1; by >= 0; by--)
{
memset(&line_block[0][0], 0, sizeof(line_block));
unsigned char *src = &lcd_framebuffer[by][0];
unsigned char *dst = &line_block[0][0];
for (bx = 0; bx < LCD_WIDTH/8; bx++)
memset(line_block, 0, sizeof(line_block));
for (bx = LCD_WIDTH/8; bx > 0; bx--)
{
dst_mask = 0x01;
for (ix = 7; ix >= 0; ix--)
unsigned dst_mask = 0x80;
int ix;
for (ix = 8; ix > 0; ix--)
{
src_byte = lcd_framebuffer[by][8*bx+ix];
src_mask = 0x01;
for (iy = 7; iy >= 0; iy--)
unsigned char *dst_blk = dst;
unsigned src_byte = *src++;
int iy;
for (iy = 8; iy > 0; iy--)
{
if (src_byte & src_mask)
line_block[iy][bx] |= dst_mask;
src_mask <<= 1;
if (src_byte & 0x80)
*dst_blk |= dst_mask;
src_byte <<= 1;
dst_blk += BMP_LINESIZE;
}
dst_mask <<= 1;
dst_mask >>= 1;
}
dst++;
}
write(fh, &line_block[0][0], sizeof(line_block));
write(fh, line_block, sizeof(line_block));
}
#elif LCD_DEPTH == 2
for (by = LCD_HEIGHT/4 - 1; by >= 0; by--)
{
memset(&line_block[0][0], 0, sizeof(line_block));
unsigned char *src = &lcd_framebuffer[by][0];
unsigned char *dst = &line_block[3][0];
for (bx = 0; bx < LCD_WIDTH/2; bx++)
memset(line_block, 0, sizeof(line_block));
for (bx = LCD_WIDTH/2; bx > 0; bx--)
{
src_byte = lcd_framebuffer[by][2*bx];
src_byte2 = lcd_framebuffer[by][2*bx+1];
for (iy = 3; iy >= 0; iy--)
unsigned char *dst_blk = dst++;
unsigned src_byte0 = *src++;
unsigned src_byte1 = *src++;
int iy;
for (iy = 4; iy > 0; iy--)
{
line_block[iy][bx] = ((src_byte & 3) << 4) | (src_byte2 & 3);
src_byte >>= 2;
src_byte2 >>= 2;
*dst_blk = ((src_byte0 & 3) << 4) | (src_byte1 & 3);
src_byte0 >>= 2;
src_byte1 >>= 2;
dst_blk -= BMP_LINESIZE;
}
}
write(fh, &line_block[0][0], sizeof(line_block));
write(fh, line_block, sizeof(line_block));
}
#elif LCD_DEPTH == 16
for (by = LCD_HEIGHT - 1; by >= 0; by--)
{
memset(line_block, 0, sizeof(line_block));
src = &lcd_framebuffer[by][0];
dst = line_block;
unsigned short *src = &lcd_framebuffer[by][0];
unsigned short *dst = line_block;
for (bx = 0; bx < LCD_WIDTH; bx++)
memset(line_block, 0, sizeof(line_block));
for (bx = LCD_WIDTH; bx > 0; bx--)
{
#if (LCD_PIXELFORMAT == RGB565SWAPPED)
/* iPod LCD data is big endian although the CPU is not */
*dst++ = htobe16(*src++);
*dst++ = htobe16(*src++);
#else
*dst++ = htole16(*src++);
#endif