static void lowpass_line_complex_c_16(uint8_t *dst8, ptrdiff_t width, const uint8_t *src8,
ptrdiff_t mref, ptrdiff_t pref, int clip_max)
{
uint16_t *dstp = (uint16_t *)dst8;
const uint16_t *srcp = (const uint16_t *)src8;
const uint16_t *srcp_above = srcp + mref / 2;
const uint16_t *srcp_below = srcp + pref / 2;
const uint16_t *srcp_above2 = srcp + mref;
const uint16_t *srcp_below2 = srcp + pref;
int i, dst_le, src_le, src_x, src_ab;
for (i = 0; i < width; i++) {
// this calculation is an integer representation of
// '0.75 * current + 0.25 * above + 0.25 * below - 0.125 * above2 - 0.125 * below2'
// '4 +' is for rounding.
src_le = av_le2ne16(srcp[i]);
src_x = src_le << 1;
src_ab = av_le2ne16(srcp_above[i]) + av_le2ne16(srcp_below[i]);
dst_le = av_clip((4 + ((src_le + src_x + src_ab) << 1)
- av_le2ne16(srcp_above2[i])
- av_le2ne16(srcp_below2[i])) >> 3, 0, clip_max);
// Prevent over-sharpening:
// dst must not exceed src when the average of above and below
// is less than src. And the other way around.
if (src_ab > src_x) {
if (dst_le < src_le)
dstp[i] = av_le2ne16(src_le);
else
dstp[i] = av_le2ne16(dst_le);
} else if (dst_le > src_le) {
dstp[i] = av_le2ne16(src_le);
} else
dstp[i] = av_le2ne16(dst_le);
}
}
static void lowpass_line_c_16(uint8_t *dst8, ptrdiff_t width, const uint8_t *src8,
ptrdiff_t mref, ptrdiff_t pref, int clip_max)
{
uint16_t *dstp = (uint16_t *)dst8;
const uint16_t *srcp = (const uint16_t *)src8;
const uint16_t *srcp_above = srcp + mref / 2;
const uint16_t *srcp_below = srcp + pref / 2;
int i, src_x;
for (i = 0; i < width; i++) {
// this calculation is an integer representation of
// '0.5 * current + 0.25 * above + 0.25 * below'
// '1 +' is for rounding.
src_x = av_le2ne16(srcp[i]) << 1;
dstp[i] = av_le2ne16((1 + src_x + av_le2ne16(srcp_above[i])
+ av_le2ne16(srcp_below[i])) >> 2);
}
}
static int sol_probe(AVProbeData *p)
{
/* check file header */
uint16_t magic;
magic=av_le2ne16(*((uint16_t*)p->buf));
if ((magic == 0x0B8D || magic == 0x0C0D || magic == 0x0C8D) &&
p->buf[2] == 'S' && p->buf[3] == 'O' &&
p->buf[4] == 'L' && p->buf[5] == 0)
return AVPROBE_SCORE_MAX;
else
return 0;
}
