int file_error;
size_t len = 0;
do {
- const size_t n = fread((uint8_t*)buf + len, 1, size - len, file);
+ const size_t n = fread((uint8_t *)buf + len, 1, size - len, file);
len += n;
file_error = ferror(file);
if (file_error) {
} while (!feof(file) && len < size && ++retry_count < kMaxRetries);
if (!feof(file) && len != size) {
- fprintf(stderr, "Error reading file: %u of %u bytes read,"
- " error: %d, retries: %d, %d: %s\n",
- (uint32_t)len, (uint32_t)size, file_error, retry_count,
- errno, strerror(errno));
+ fprintf(stderr,
+ "Error reading file: %u of %u bytes read,"
+ " error: %d, retries: %d, %d: %s\n",
+ (uint32_t)len, (uint32_t)size, file_error, retry_count, errno,
+ strerror(errno));
}
return len == size;
}
static int y4m_parse_tags(y4m_input *_y4m, char *_tags) {
- int got_w;
- int got_h;
- int got_fps;
- int got_interlace;
- int got_par;
- int got_chroma;
+ int got_w;
+ int got_h;
+ int got_fps;
+ int got_interlace;
+ int got_par;
+ int got_chroma;
char *p;
char *q;
got_w = got_h = got_fps = got_interlace = got_par = got_chroma = 0;
for (p = _tags;; p = q) {
/*Skip any leading spaces.*/
- while (*p == ' ')p++;
+ while (*p == ' ') p++;
/*If that's all we have, stop.*/
- if (p[0] == '\0')break;
+ if (p[0] == '\0') break;
/*Find the end of this tag.*/
- for (q = p + 1; *q != '\0' && *q != ' '; q++);
+ for (q = p + 1; *q != '\0' && *q != ' '; q++) {
+ }
/*Process the tag.*/
switch (p[0]) {
case 'W': {
- if (sscanf(p + 1, "%d", &_y4m->pic_w) != 1)return -1;
+ if (sscanf(p + 1, "%d", &_y4m->pic_w) != 1) return -1;
got_w = 1;
+ break;
}
- break;
case 'H': {
- if (sscanf(p + 1, "%d", &_y4m->pic_h) != 1)return -1;
+ if (sscanf(p + 1, "%d", &_y4m->pic_h) != 1) return -1;
got_h = 1;
+ break;
}
- break;
case 'F': {
if (sscanf(p + 1, "%d:%d", &_y4m->fps_n, &_y4m->fps_d) != 2) {
return -1;
}
got_fps = 1;
+ break;
}
- break;
case 'I': {
_y4m->interlace = p[1];
got_interlace = 1;
+ break;
}
- break;
case 'A': {
if (sscanf(p + 1, "%d:%d", &_y4m->par_n, &_y4m->par_d) != 2) {
return -1;
}
got_par = 1;
+ break;
}
- break;
case 'C': {
- if (q - p > 16)return -1;
+ if (q - p > 16) return -1;
memcpy(_y4m->chroma_type, p + 1, q - p - 1);
_y4m->chroma_type[q - p - 1] = '\0';
got_chroma = 1;
+ break;
}
- break;
- /*Ignore unknown tags.*/
+ /*Ignore unknown tags.*/
}
}
- if (!got_w || !got_h || !got_fps)return -1;
- if (!got_interlace)_y4m->interlace = '?';
- if (!got_par)_y4m->par_n = _y4m->par_d = 0;
+ if (!got_w || !got_h || !got_fps) return -1;
+ if (!got_interlace) _y4m->interlace = '?';
+ if (!got_par) _y4m->par_n = _y4m->par_d = 0;
/*Chroma-type is not specified in older files, e.g., those generated by
mplayer.*/
- if (!got_chroma)strcpy(_y4m->chroma_type, "420");
+ if (!got_chroma) strcpy(_y4m->chroma_type, "420");
return 0;
}
-
-
/*All anti-aliasing filters in the following conversion functions are based on
one of two window functions:
The 6-tap Lanczos window (for down-sampling and shifts):
have these steps pipelined, for less memory consumption and better cache
performance, but we do them separately for simplicity.*/
-#define OC_MINI(_a,_b) ((_a)>(_b)?(_b):(_a))
-#define OC_MAXI(_a,_b) ((_a)<(_b)?(_b):(_a))
-#define OC_CLAMPI(_a,_b,_c) (OC_MAXI(_a,OC_MINI(_b,_c)))
+#define OC_MINI(_a, _b) ((_a) > (_b) ? (_b) : (_a))
+#define OC_MAXI(_a, _b) ((_a) < (_b) ? (_b) : (_a))
+#define OC_CLAMPI(_a, _b, _c) (OC_MAXI(_a, OC_MINI(_b, _c)))
/*420jpeg chroma samples are sited like:
Y-------Y-------Y-------Y-------
lines, and they are vertically co-sited with the luma samples in both the
mpeg2 and jpeg cases (thus requiring no vertical resampling).*/
static void y4m_42xmpeg2_42xjpeg_helper(unsigned char *_dst,
- const unsigned char *_src, int _c_w, int _c_h) {
+ const unsigned char *_src, int _c_w,
+ int _c_h) {
int y;
int x;
for (y = 0; y < _c_h; y++) {
/*Filter: [4 -17 114 35 -9 1]/128, derived from a 6-tap Lanczos
window.*/
for (x = 0; x < OC_MINI(_c_w, 2); x++) {
- _dst[x] = (unsigned char)OC_CLAMPI(0, (4 * _src[0] - 17 * _src[OC_MAXI(x - 1, 0)] +
- 114 * _src[x] + 35 * _src[OC_MINI(x + 1, _c_w - 1)] - 9 * _src[OC_MINI(x + 2, _c_w - 1)] +
- _src[OC_MINI(x + 3, _c_w - 1)] + 64) >> 7, 255);
+ _dst[x] = (unsigned char)OC_CLAMPI(
+ 0, (4 * _src[0] - 17 * _src[OC_MAXI(x - 1, 0)] + 114 * _src[x] +
+ 35 * _src[OC_MINI(x + 1, _c_w - 1)] -
+ 9 * _src[OC_MINI(x + 2, _c_w - 1)] +
+ _src[OC_MINI(x + 3, _c_w - 1)] + 64) >>
+ 7,
+ 255);
}
for (; x < _c_w - 3; x++) {
- _dst[x] = (unsigned char)OC_CLAMPI(0, (4 * _src[x - 2] - 17 * _src[x - 1] +
- 114 * _src[x] + 35 * _src[x + 1] - 9 * _src[x + 2] + _src[x + 3] + 64) >> 7, 255);
+ _dst[x] = (unsigned char)OC_CLAMPI(
+ 0, (4 * _src[x - 2] - 17 * _src[x - 1] + 114 * _src[x] +
+ 35 * _src[x + 1] - 9 * _src[x + 2] + _src[x + 3] + 64) >>
+ 7,
+ 255);
}
for (; x < _c_w; x++) {
- _dst[x] = (unsigned char)OC_CLAMPI(0, (4 * _src[x - 2] - 17 * _src[x - 1] +
- 114 * _src[x] + 35 * _src[OC_MINI(x + 1, _c_w - 1)] - 9 * _src[OC_MINI(x + 2, _c_w - 1)] +
- _src[_c_w - 1] + 64) >> 7, 255);
+ _dst[x] = (unsigned char)OC_CLAMPI(
+ 0, (4 * _src[x - 2] - 17 * _src[x - 1] + 114 * _src[x] +
+ 35 * _src[OC_MINI(x + 1, _c_w - 1)] -
+ 9 * _src[OC_MINI(x + 2, _c_w - 1)] + _src[_c_w - 1] + 64) >>
+ 7,
+ 255);
}
_dst += _c_w;
_src += _c_w;
static void y4m_convert_42xpaldv_42xjpeg(y4m_input *_y4m, unsigned char *_dst,
unsigned char *_aux) {
unsigned char *tmp;
- int c_w;
- int c_h;
- int c_sz;
- int pli;
- int y;
- int x;
+ int c_w;
+ int c_h;
+ int c_sz;
+ int pli;
+ int y;
+ int x;
/*Skip past the luma data.*/
_dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
This is the same filter used above, but in the other order.*/
for (x = 0; x < c_w; x++) {
for (y = 0; y < OC_MINI(c_h, 3); y++) {
- _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (tmp[0]
- - 9 * tmp[OC_MAXI(y - 2, 0) * c_w] + 35 * tmp[OC_MAXI(y - 1, 0) * c_w]
- + 114 * tmp[y * c_w] - 17 * tmp[OC_MINI(y + 1, c_h - 1) * c_w]
- + 4 * tmp[OC_MINI(y + 2, c_h - 1) * c_w] + 64) >> 7, 255);
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(
+ 0, (tmp[0] - 9 * tmp[OC_MAXI(y - 2, 0) * c_w] +
+ 35 * tmp[OC_MAXI(y - 1, 0) * c_w] + 114 * tmp[y * c_w] -
+ 17 * tmp[OC_MINI(y + 1, c_h - 1) * c_w] +
+ 4 * tmp[OC_MINI(y + 2, c_h - 1) * c_w] + 64) >>
+ 7,
+ 255);
}
for (; y < c_h - 2; y++) {
- _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (tmp[(y - 3) * c_w]
- - 9 * tmp[(y - 2) * c_w] + 35 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w]
- - 17 * tmp[(y + 1) * c_w] + 4 * tmp[(y + 2) * c_w] + 64) >> 7, 255);
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(
+ 0, (tmp[(y - 3) * c_w] - 9 * tmp[(y - 2) * c_w] +
+ 35 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w] -
+ 17 * tmp[(y + 1) * c_w] + 4 * tmp[(y + 2) * c_w] + 64) >>
+ 7,
+ 255);
}
for (; y < c_h; y++) {
- _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (tmp[(y - 3) * c_w]
- - 9 * tmp[(y - 2) * c_w] + 35 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w]
- - 17 * tmp[OC_MINI(y + 1, c_h - 1) * c_w] + 4 * tmp[(c_h - 1) * c_w] + 64) >> 7, 255);
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(
+ 0, (tmp[(y - 3) * c_w] - 9 * tmp[(y - 2) * c_w] +
+ 35 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w] -
+ 17 * tmp[OC_MINI(y + 1, c_h - 1) * c_w] +
+ 4 * tmp[(c_h - 1) * c_w] + 64) >>
+ 7,
+ 255);
}
_dst++;
tmp++;
}
_dst += c_sz - c_w;
tmp -= c_w;
+ break;
}
- break;
case 2: {
/*Slide C_r down a quarter-pel.
This is the same as the horizontal filter.*/
for (x = 0; x < c_w; x++) {
for (y = 0; y < OC_MINI(c_h, 2); y++) {
- _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (4 * tmp[0]
- - 17 * tmp[OC_MAXI(y - 1, 0) * c_w] + 114 * tmp[y * c_w]
- + 35 * tmp[OC_MINI(y + 1, c_h - 1) * c_w] - 9 * tmp[OC_MINI(y + 2, c_h - 1) * c_w]
- + tmp[OC_MINI(y + 3, c_h - 1) * c_w] + 64) >> 7, 255);
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(
+ 0,
+ (4 * tmp[0] - 17 * tmp[OC_MAXI(y - 1, 0) * c_w] +
+ 114 * tmp[y * c_w] + 35 * tmp[OC_MINI(y + 1, c_h - 1) * c_w] -
+ 9 * tmp[OC_MINI(y + 2, c_h - 1) * c_w] +
+ tmp[OC_MINI(y + 3, c_h - 1) * c_w] + 64) >>
+ 7,
+ 255);
}
for (; y < c_h - 3; y++) {
- _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (4 * tmp[(y - 2) * c_w]
- - 17 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w] + 35 * tmp[(y + 1) * c_w]
- - 9 * tmp[(y + 2) * c_w] + tmp[(y + 3) * c_w] + 64) >> 7, 255);
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(
+ 0, (4 * tmp[(y - 2) * c_w] - 17 * tmp[(y - 1) * c_w] +
+ 114 * tmp[y * c_w] + 35 * tmp[(y + 1) * c_w] -
+ 9 * tmp[(y + 2) * c_w] + tmp[(y + 3) * c_w] + 64) >>
+ 7,
+ 255);
}
for (; y < c_h; y++) {
- _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (4 * tmp[(y - 2) * c_w]
- - 17 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w] + 35 * tmp[OC_MINI(y + 1, c_h - 1) * c_w]
- - 9 * tmp[OC_MINI(y + 2, c_h - 1) * c_w] + tmp[(c_h - 1) * c_w] + 64) >> 7, 255);
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(
+ 0,
+ (4 * tmp[(y - 2) * c_w] - 17 * tmp[(y - 1) * c_w] +
+ 114 * tmp[y * c_w] + 35 * tmp[OC_MINI(y + 1, c_h - 1) * c_w] -
+ 9 * tmp[OC_MINI(y + 2, c_h - 1) * c_w] + tmp[(c_h - 1) * c_w] +
+ 64) >>
+ 7,
+ 255);
}
_dst++;
tmp++;
}
+ break;
}
- break;
}
/*For actual interlaced material, this would have to be done separately on
each field, and the shift amounts would be different.
/*Perform vertical filtering to reduce a single plane from 4:2:2 to 4:2:0.
This is used as a helper by several converation routines.*/
static void y4m_422jpeg_420jpeg_helper(unsigned char *_dst,
- const unsigned char *_src, int _c_w, int _c_h) {
+ const unsigned char *_src, int _c_w,
+ int _c_h) {
int y;
int x;
/*Filter: [3 -17 78 78 -17 3]/128, derived from a 6-tap Lanczos window.*/
for (x = 0; x < _c_w; x++) {
for (y = 0; y < OC_MINI(_c_h, 2); y += 2) {
- _dst[(y >> 1)*_c_w] = OC_CLAMPI(0, (64 * _src[0]
- + 78 * _src[OC_MINI(1, _c_h - 1) * _c_w]
- - 17 * _src[OC_MINI(2, _c_h - 1) * _c_w]
- + 3 * _src[OC_MINI(3, _c_h - 1) * _c_w] + 64) >> 7, 255);
+ _dst[(y >> 1) * _c_w] =
+ OC_CLAMPI(0, (64 * _src[0] + 78 * _src[OC_MINI(1, _c_h - 1) * _c_w] -
+ 17 * _src[OC_MINI(2, _c_h - 1) * _c_w] +
+ 3 * _src[OC_MINI(3, _c_h - 1) * _c_w] + 64) >>
+ 7,
+ 255);
}
for (; y < _c_h - 3; y += 2) {
- _dst[(y >> 1)*_c_w] = OC_CLAMPI(0, (3 * (_src[(y - 2) * _c_w] + _src[(y + 3) * _c_w])
- - 17 * (_src[(y - 1) * _c_w] + _src[(y + 2) * _c_w])
- + 78 * (_src[y * _c_w] + _src[(y + 1) * _c_w]) + 64) >> 7, 255);
+ _dst[(y >> 1) * _c_w] =
+ OC_CLAMPI(0, (3 * (_src[(y - 2) * _c_w] + _src[(y + 3) * _c_w]) -
+ 17 * (_src[(y - 1) * _c_w] + _src[(y + 2) * _c_w]) +
+ 78 * (_src[y * _c_w] + _src[(y + 1) * _c_w]) + 64) >>
+ 7,
+ 255);
}
for (; y < _c_h; y += 2) {
- _dst[(y >> 1)*_c_w] = OC_CLAMPI(0, (3 * (_src[(y - 2) * _c_w]
- + _src[(_c_h - 1) * _c_w]) - 17 * (_src[(y - 1) * _c_w]
- + _src[OC_MINI(y + 2, _c_h - 1) * _c_w])
- + 78 * (_src[y * _c_w] + _src[OC_MINI(y + 1, _c_h - 1) * _c_w]) + 64) >> 7, 255);
+ _dst[(y >> 1) * _c_w] = OC_CLAMPI(
+ 0,
+ (3 * (_src[(y - 2) * _c_w] + _src[(_c_h - 1) * _c_w]) -
+ 17 * (_src[(y - 1) * _c_w] + _src[OC_MINI(y + 2, _c_h - 1) * _c_w]) +
+ 78 * (_src[y * _c_w] + _src[OC_MINI(y + 1, _c_h - 1) * _c_w]) +
+ 64) >>
+ 7,
+ 255);
}
_src++;
_dst++;
static void y4m_convert_422_420jpeg(y4m_input *_y4m, unsigned char *_dst,
unsigned char *_aux) {
unsigned char *tmp;
- int c_w;
- int c_h;
- int c_sz;
- int dst_c_h;
- int dst_c_sz;
- int pli;
+ int c_w;
+ int c_h;
+ int c_sz;
+ int dst_c_h;
+ int dst_c_sz;
+ int pli;
/*Skip past the luma data.*/
_dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
static void y4m_convert_411_420jpeg(y4m_input *_y4m, unsigned char *_dst,
unsigned char *_aux) {
unsigned char *tmp;
- int c_w;
- int c_h;
- int c_sz;
- int dst_c_w;
- int dst_c_h;
- int dst_c_sz;
- int tmp_sz;
- int pli;
- int y;
- int x;
+ int c_w;
+ int c_h;
+ int c_sz;
+ int dst_c_w;
+ int dst_c_h;
+ int dst_c_sz;
+ int tmp_sz;
+ int pli;
+ int y;
+ int x;
/*Skip past the luma data.*/
_dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
/*Filters: [1 110 18 -1]/128 and [-3 50 86 -5]/128, both derived from a
4-tap Mitchell window.*/
for (x = 0; x < OC_MINI(c_w, 1); x++) {
- tmp[x << 1] = (unsigned char)OC_CLAMPI(0, (111 * _aux[0]
- + 18 * _aux[OC_MINI(1, c_w - 1)] - _aux[OC_MINI(2, c_w - 1)] + 64) >> 7, 255);
- tmp[x << 1 | 1] = (unsigned char)OC_CLAMPI(0, (47 * _aux[0]
- + 86 * _aux[OC_MINI(1, c_w - 1)] - 5 * _aux[OC_MINI(2, c_w - 1)] + 64) >> 7, 255);
+ tmp[x << 1] = (unsigned char)OC_CLAMPI(
+ 0, (111 * _aux[0] + 18 * _aux[OC_MINI(1, c_w - 1)] -
+ _aux[OC_MINI(2, c_w - 1)] + 64) >>
+ 7,
+ 255);
+ tmp[x << 1 | 1] = (unsigned char)OC_CLAMPI(
+ 0, (47 * _aux[0] + 86 * _aux[OC_MINI(1, c_w - 1)] -
+ 5 * _aux[OC_MINI(2, c_w - 1)] + 64) >>
+ 7,
+ 255);
}
for (; x < c_w - 2; x++) {
- tmp[x << 1] = (unsigned char)OC_CLAMPI(0, (_aux[x - 1] + 110 * _aux[x]
- + 18 * _aux[x + 1] - _aux[x + 2] + 64) >> 7, 255);
- tmp[x << 1 | 1] = (unsigned char)OC_CLAMPI(0, (-3 * _aux[x - 1] + 50 * _aux[x]
- + 86 * _aux[x + 1] - 5 * _aux[x + 2] + 64) >> 7, 255);
+ tmp[x << 1] =
+ (unsigned char)OC_CLAMPI(0, (_aux[x - 1] + 110 * _aux[x] +
+ 18 * _aux[x + 1] - _aux[x + 2] + 64) >>
+ 7,
+ 255);
+ tmp[x << 1 | 1] = (unsigned char)OC_CLAMPI(
+ 0, (-3 * _aux[x - 1] + 50 * _aux[x] + 86 * _aux[x + 1] -
+ 5 * _aux[x + 2] + 64) >>
+ 7,
+ 255);
}
for (; x < c_w; x++) {
- tmp[x << 1] = (unsigned char)OC_CLAMPI(0, (_aux[x - 1] + 110 * _aux[x]
- + 18 * _aux[OC_MINI(x + 1, c_w - 1)] - _aux[c_w - 1] + 64) >> 7, 255);
+ tmp[x << 1] = (unsigned char)OC_CLAMPI(
+ 0, (_aux[x - 1] + 110 * _aux[x] +
+ 18 * _aux[OC_MINI(x + 1, c_w - 1)] - _aux[c_w - 1] + 64) >>
+ 7,
+ 255);
if ((x << 1 | 1) < dst_c_w) {
- tmp[x << 1 | 1] = (unsigned char)OC_CLAMPI(0, (-3 * _aux[x - 1] + 50 * _aux[x]
- + 86 * _aux[OC_MINI(x + 1, c_w - 1)] - 5 * _aux[c_w - 1] + 64) >> 7, 255);
+ tmp[x << 1 | 1] = (unsigned char)OC_CLAMPI(
+ 0,
+ (-3 * _aux[x - 1] + 50 * _aux[x] +
+ 86 * _aux[OC_MINI(x + 1, c_w - 1)] - 5 * _aux[c_w - 1] + 64) >>
+ 7,
+ 255);
}
}
tmp += dst_c_w;
static void y4m_convert_444_420jpeg(y4m_input *_y4m, unsigned char *_dst,
unsigned char *_aux) {
unsigned char *tmp;
- int c_w;
- int c_h;
- int c_sz;
- int dst_c_w;
- int dst_c_h;
- int dst_c_sz;
- int tmp_sz;
- int pli;
- int y;
- int x;
+ int c_w;
+ int c_h;
+ int c_sz;
+ int dst_c_w;
+ int dst_c_h;
+ int dst_c_sz;
+ int tmp_sz;
+ int pli;
+ int y;
+ int x;
/*Skip past the luma data.*/
_dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
/*Filter: [3 -17 78 78 -17 3]/128, derived from a 6-tap Lanczos window.*/
for (y = 0; y < c_h; y++) {
for (x = 0; x < OC_MINI(c_w, 2); x += 2) {
- tmp[x >> 1] = OC_CLAMPI(0, (64 * _aux[0] + 78 * _aux[OC_MINI(1, c_w - 1)]
- - 17 * _aux[OC_MINI(2, c_w - 1)]
- + 3 * _aux[OC_MINI(3, c_w - 1)] + 64) >> 7, 255);
+ tmp[x >> 1] =
+ OC_CLAMPI(0, (64 * _aux[0] + 78 * _aux[OC_MINI(1, c_w - 1)] -
+ 17 * _aux[OC_MINI(2, c_w - 1)] +
+ 3 * _aux[OC_MINI(3, c_w - 1)] + 64) >>
+ 7,
+ 255);
}
for (; x < c_w - 3; x += 2) {
- tmp[x >> 1] = OC_CLAMPI(0, (3 * (_aux[x - 2] + _aux[x + 3])
- - 17 * (_aux[x - 1] + _aux[x + 2]) + 78 * (_aux[x] + _aux[x + 1]) + 64) >> 7, 255);
+ tmp[x >> 1] = OC_CLAMPI(0, (3 * (_aux[x - 2] + _aux[x + 3]) -
+ 17 * (_aux[x - 1] + _aux[x + 2]) +
+ 78 * (_aux[x] + _aux[x + 1]) + 64) >>
+ 7,
+ 255);
}
for (; x < c_w; x += 2) {
- tmp[x >> 1] = OC_CLAMPI(0, (3 * (_aux[x - 2] + _aux[c_w - 1]) -
- 17 * (_aux[x - 1] + _aux[OC_MINI(x + 2, c_w - 1)]) +
- 78 * (_aux[x] + _aux[OC_MINI(x + 1, c_w - 1)]) + 64) >> 7, 255);
+ tmp[x >> 1] = OC_CLAMPI(
+ 0, (3 * (_aux[x - 2] + _aux[c_w - 1]) -
+ 17 * (_aux[x - 1] + _aux[OC_MINI(x + 2, c_w - 1)]) +
+ 78 * (_aux[x] + _aux[OC_MINI(x + 1, c_w - 1)]) + 64) >>
+ 7,
+ 255);
}
tmp += dst_c_w;
_aux += c_w;
int y4m_input_open(y4m_input *_y4m, FILE *_fin, char *_skip, int _nskip,
int only_420) {
- char buffer[80] = {0};
- int ret;
- int i;
+ char buffer[80] = { 0 };
+ int ret;
+ int i;
/*Read until newline, or 80 cols, whichever happens first.*/
for (i = 0; i < 79; i++) {
if (_nskip > 0) {
} else {
if (!file_read(buffer + i, 1, _fin)) return -1;
}
- if (buffer[i] == '\n')break;
+ if (buffer[i] == '\n') break;
}
/*We skipped too much header data.*/
- if (_nskip > 0)return -1;
+ if (_nskip > 0) return -1;
if (i == 79) {
fprintf(stderr, "Error parsing header; not a YUV2MPEG2 file?\n");
return -1;
return ret;
}
if (_y4m->interlace == '?') {
- fprintf(stderr, "Warning: Input video interlacing format unknown; "
+ fprintf(stderr,
+ "Warning: Input video interlacing format unknown; "
"assuming progressive scan.\n");
} else if (_y4m->interlace != 'p') {
- fprintf(stderr, "Input video is interlaced; "
+ fprintf(stderr,
+ "Input video is interlaced; "
"Only progressive scan handled.\n");
return -1;
}
_y4m->bit_depth = 8;
if (strcmp(_y4m->chroma_type, "420") == 0 ||
strcmp(_y4m->chroma_type, "420jpeg") == 0) {
- _y4m->src_c_dec_h = _y4m->dst_c_dec_h = _y4m->src_c_dec_v = _y4m->dst_c_dec_v = 2;
- _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h
- + 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
+ _y4m->src_c_dec_h = _y4m->dst_c_dec_h = _y4m->src_c_dec_v =
+ _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz =
+ _y4m->pic_w * _y4m->pic_h +
+ 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
/* Natively supported: no conversion required. */
_y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
_y4m->convert = y4m_convert_null;
_y4m->dst_c_dec_h = 2;
_y4m->src_c_dec_v = 2;
_y4m->dst_c_dec_v = 2;
- _y4m->dst_buf_read_sz = 2 * (_y4m->pic_w * _y4m->pic_h +
- 2 * ((_y4m->pic_w + 1) / 2) *
- ((_y4m->pic_h + 1) / 2));
+ _y4m->dst_buf_read_sz =
+ 2 * (_y4m->pic_w * _y4m->pic_h +
+ 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2));
/* Natively supported: no conversion required. */
_y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
_y4m->convert = y4m_convert_null;
_y4m->dst_c_dec_h = 2;
_y4m->src_c_dec_v = 2;
_y4m->dst_c_dec_v = 2;
- _y4m->dst_buf_read_sz = 2 * (_y4m->pic_w * _y4m->pic_h +
- 2 * ((_y4m->pic_w + 1) / 2) *
- ((_y4m->pic_h + 1) / 2));
+ _y4m->dst_buf_read_sz =
+ 2 * (_y4m->pic_w * _y4m->pic_h +
+ 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2));
/* Natively supported: no conversion required. */
_y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
_y4m->convert = y4m_convert_null;
return -1;
}
} else if (strcmp(_y4m->chroma_type, "420mpeg2") == 0) {
- _y4m->src_c_dec_h = _y4m->dst_c_dec_h = _y4m->src_c_dec_v = _y4m->dst_c_dec_v = 2;
+ _y4m->src_c_dec_h = _y4m->dst_c_dec_h = _y4m->src_c_dec_v =
+ _y4m->dst_c_dec_v = 2;
_y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
/*Chroma filter required: read into the aux buf first.*/
_y4m->aux_buf_sz = _y4m->aux_buf_read_sz =
- 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
+ 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
_y4m->convert = y4m_convert_42xmpeg2_42xjpeg;
} else if (strcmp(_y4m->chroma_type, "420paldv") == 0) {
- _y4m->src_c_dec_h = _y4m->dst_c_dec_h = _y4m->src_c_dec_v = _y4m->dst_c_dec_v = 2;
+ _y4m->src_c_dec_h = _y4m->dst_c_dec_h = _y4m->src_c_dec_v =
+ _y4m->dst_c_dec_v = 2;
_y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
/*Chroma filter required: read into the aux buf first.
We need to make two filter passes, so we need some extra space in the
aux buffer.*/
_y4m->aux_buf_sz = 3 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
- _y4m->aux_buf_read_sz = 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
+ _y4m->aux_buf_read_sz =
+ 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
_y4m->convert = y4m_convert_42xpaldv_42xjpeg;
} else if (strcmp(_y4m->chroma_type, "422jpeg") == 0) {
_y4m->src_c_dec_h = _y4m->dst_c_dec_h = 2;
_y4m->dst_c_dec_v = 2;
_y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
/*Chroma filter required: read into the aux buf first.*/
- _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz =
+ 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
_y4m->convert = y4m_convert_422jpeg_420jpeg;
} else if (strcmp(_y4m->chroma_type, "422") == 0) {
_y4m->src_c_dec_h = 2;
We need to make two filter passes, so we need some extra space in the
aux buffer.*/
_y4m->aux_buf_read_sz = 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
- _y4m->aux_buf_sz = _y4m->aux_buf_read_sz +
- ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->aux_buf_sz =
+ _y4m->aux_buf_read_sz + ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
_y4m->convert = y4m_convert_422_420jpeg;
} else {
_y4m->vpx_fmt = VPX_IMG_FMT_I422;
_y4m->bps = 16;
_y4m->dst_c_dec_h = _y4m->src_c_dec_h;
_y4m->dst_c_dec_v = _y4m->src_c_dec_v;
- _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h
- + 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->dst_buf_read_sz =
+ _y4m->pic_w * _y4m->pic_h + 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
/*Natively supported: no conversion required.*/
_y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
_y4m->convert = y4m_convert_null;
We need to make two filter passes, so we need some extra space in the
aux buffer.*/
_y4m->aux_buf_read_sz = 2 * ((_y4m->pic_w + 3) / 4) * _y4m->pic_h;
- _y4m->aux_buf_sz = _y4m->aux_buf_read_sz + ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->aux_buf_sz =
+ _y4m->aux_buf_read_sz + ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
_y4m->convert = y4m_convert_411_420jpeg;
} else if (strcmp(_y4m->chroma_type, "444") == 0) {
_y4m->src_c_dec_h = 1;
We need to make two filter passes, so we need some extra space in the
aux buffer.*/
_y4m->aux_buf_read_sz = 2 * _y4m->pic_w * _y4m->pic_h;
- _y4m->aux_buf_sz = _y4m->aux_buf_read_sz +
- ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->aux_buf_sz =
+ _y4m->aux_buf_read_sz + ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
_y4m->convert = y4m_convert_444_420jpeg;
} else {
_y4m->vpx_fmt = VPX_IMG_FMT_I444;
}
/*The size of the final frame buffers is always computed from the
destination chroma decimation type.*/
- _y4m->dst_buf_sz = _y4m->pic_w * _y4m->pic_h
- + 2 * ((_y4m->pic_w + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h) *
- ((_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v);
+ _y4m->dst_buf_sz =
+ _y4m->pic_w * _y4m->pic_h +
+ 2 * ((_y4m->pic_w + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h) *
+ ((_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v);
if (_y4m->bit_depth == 8)
_y4m->dst_buf = (unsigned char *)malloc(_y4m->dst_buf_sz);
else
int y4m_input_fetch_frame(y4m_input *_y4m, FILE *_fin, vpx_image_t *_img) {
char frame[6];
- int pic_sz;
- int c_w;
- int c_h;
- int c_sz;
- int bytes_per_sample = _y4m->bit_depth > 8 ? 2 : 1;
+ int pic_sz;
+ int c_w;
+ int c_h;
+ int c_sz;
+ int bytes_per_sample = _y4m->bit_depth > 8 ? 2 : 1;
/*Read and skip the frame header.*/
if (!file_read(frame, 6, _fin)) return 0;
if (memcmp(frame, "FRAME", 5)) {
}
if (frame[5] != '\n') {
char c;
- int j;
- for (j = 0; j < 79 && file_read(&c, 1, _fin) && c != '\n'; j++) {}
+ int j;
+ for (j = 0; j < 79 && file_read(&c, 1, _fin) && c != '\n'; j++) {
+ }
if (j == 79) {
fprintf(stderr, "Error parsing Y4M frame header\n");
return -1;
projects / libvpx / blobdiff