diff options
Diffstat (limited to 'sys/qcam/dark.c')
| -rw-r--r-- | sys/qcam/dark.c | 65 |
1 files changed, 33 insertions, 32 deletions
diff --git a/sys/qcam/dark.c b/sys/qcam/dark.c index 70acf979a..e15a53c92 100644 --- a/sys/qcam/dark.c +++ b/sys/qcam/dark.c @@ -50,8 +50,8 @@ OTHER DEALINGS IN THE SOFTWARE. #define FNAME "qcam.darkfile" static unsigned char master_darkmask1[MAX_HEIGHT][MAX_WIDTH]; -static unsigned char master_darkmask2[MAX_HEIGHT/2+1][MAX_WIDTH/2+1]; -static unsigned char master_darkmask4[MAX_HEIGHT/4+1][MAX_WIDTH/4+1]; +static unsigned char master_darkmask2[MAX_HEIGHT / 2 + 1][MAX_WIDTH / 2 + 1]; +static unsigned char master_darkmask4[MAX_HEIGHT / 4 + 1][MAX_WIDTH / 4 + 1]; /* int @@ -133,7 +133,7 @@ read_darkmask() */ int -fixdark(const struct qcam *q, scanbuf *scan) +fixdark (const struct qcam *q, scanbuf * scan) { static int init = 0; static int smallest_dm = 255; @@ -150,14 +150,15 @@ fixdark(const struct qcam *q, scanbuf *scan) int scale = q->transfer_scale; if (!init) { - if (!read_darkmask()) return 0; + if (!read_darkmask ()) + return 0; for (y = 0; y < MAX_HEIGHT; y++) for (x = 0; x < MAX_HEIGHT; x++) - if (master_darkmask1[y][x] < smallest_dm) { + if (master_darkmask1[y][x] < smallest_dm) { smallest_dm = master_darkmask1[y][x]; #ifdef DEBUG - fprintf(stderr, "Smallest mask is %d at (%d, %d)\n", - smallest_dm, x, y); + fprintf (stderr, "Smallest mask is %d at (%d, %d)\n", + smallest_dm, x, y); #endif } init = 1; @@ -165,7 +166,8 @@ fixdark(const struct qcam *q, scanbuf *scan) if (brightness < smallest_dm) { #ifdef DEBUG - fprintf(stderr, "Brightness %d (dark current starts at %d), no fixup needed\n", + fprintf (stderr, + "Brightness %d (dark current starts at %d), no fixup needed\n", brightness, smallest_dm); #endif return 1; @@ -186,53 +188,53 @@ fixdark(const struct qcam *q, scanbuf *scan) darkmask[y][x] = master_darkmask4[y][x]; } else { #ifdef DEBUG - fprintf(stderr, "Bad transfer_scale in darkmask assignment!\n"); + fprintf (stderr, "Bad transfer_scale in darkmask assignment!\n"); #endif return 0; } do { again = 0; - ccd_y = (q->top-1)/scale; + ccd_y = (q->top - 1) / scale; for (y = 0; y < height; y++, ccd_y++) { - ccd_x = q->left-1; + ccd_x = q->left - 1; ccd_x /= 2; ccd_x *= 2; ccd_x /= scale; for (x = 0; x < width; x++, ccd_x++) { - val = scan[y*width + x]; - if (brightness < darkmask[ccd_y][ccd_x]) { /* good pixel */ + val = scan[y * width + x]; + if (brightness < darkmask[ccd_y][ccd_x]) { /* good pixel */ new_image[y][x] = val; - } else { /* bad pixel */ + } else { /* bad pixel */ /* look at nearby pixels, average the good values */ pixelcount = 0; pixeltotal = 0; - if (x > 0) { /* left */ - if (brightness < darkmask[ccd_y][ccd_x-1]) { + if (x > 0) { /* left */ + if (brightness < darkmask[ccd_y][ccd_x - 1]) { pixelcount++; - pixeltotal += scan[y*width + x - 1]; + pixeltotal += scan[y * width + x - 1]; } } - if (x < width-1) { /* right */ - if (brightness < darkmask[ccd_y][ccd_x+1]) { + if (x < width - 1) { /* right */ + if (brightness < darkmask[ccd_y][ccd_x + 1]) { pixelcount++; - pixeltotal += scan[y*width + x + 1]; + pixeltotal += scan[y * width + x + 1]; } } - if (y > 0) { /* above */ - if (brightness < darkmask[ccd_y-1][ccd_x]) { + if (y > 0) { /* above */ + if (brightness < darkmask[ccd_y - 1][ccd_x]) { pixelcount++; - pixeltotal += scan[(y-1)*width + x]; + pixeltotal += scan[(y - 1) * width + x]; } } - if (y < height-1) { /* below */ - if (brightness < darkmask[ccd_y+1][ccd_x]) { + if (y < height - 1) { /* below */ + if (brightness < darkmask[ccd_y + 1][ccd_x]) { pixelcount++; - pixeltotal += scan[(y+1)*width + x]; + pixeltotal += scan[(y + 1) * width + x]; } } - - if (pixelcount == 0) { /* no valid neighbors! */ + + if (pixelcount == 0) { /* no valid neighbors! */ again = 1; } else { new_image[y][x] = pixeltotal / pixelcount; @@ -245,13 +247,12 @@ fixdark(const struct qcam *q, scanbuf *scan) for (y = 0; y < height; y++) for (x = 0; x < width; x++) - scan[y*width + x] = new_image[y][x]; + scan[y * width + x] = new_image[y][x]; } while (loopcount++ < MAX_LOOPS && again); #ifdef DEBUG - fprintf(stderr, "Darkmask fix took %d loop%s\n", - loopcount, (loopcount == 1)?"":"s"); + fprintf (stderr, "Darkmask fix took %d loop%s\n", + loopcount, (loopcount == 1) ? "" : "s"); #endif return 1; } - |