static int y4m_write_stream_header2(FILE *fd, y4m_stream_info_t *i)
{
char s[Y4M_LINE_MAX+1];
int n;
int err;
y4m_ratio_t tmpframerate = y4m_si_get_framerate(i);
y4m_ratio_t tmpsamplerate = y4m_si_get_sampleaspect(i);
y4m_ratio_reduce(&tmpframerate);
y4m_ratio_reduce(&tmpsamplerate);
n = tc_snprintf(s, sizeof(s), "%s W%d H%d F%d:%d I%s A%d:%d",
Y4M_MAGIC,
y4m_si_get_width(i),
y4m_si_get_height(i),
y4m_si_get_framerate(i).n, y4m_si_get_framerate(i).d,
(y4m_si_get_interlace(i) == Y4M_ILACE_NONE) ? "p" :
(y4m_si_get_interlace(i) == Y4M_ILACE_TOP_FIRST) ? "t" :
(y4m_si_get_interlace(i) == Y4M_ILACE_BOTTOM_FIRST) ? "b" : "?",
y4m_si_get_sampleaspect(i).n, y4m_si_get_sampleaspect(i).d);
if (n < 0) return Y4M_ERR_HEADER;
if ((err = y4m_snprint_xtags(s + n, sizeof(s) - n - 1, y4m_si_xtags(i)))
!= Y4M_OK)
return err;
/* zero on error */
return (fwrite(s, strlen(s), 1, fd) ? Y4M_OK : Y4M_ERR_SYSTEM);
}
int y4m_write_frame_header(int fd, y4m_frame_info_t *i)
{
char s[Y4M_LINE_MAX+1];
int n;
int err;
n = snprintf(s, sizeof(s), "%s", Y4M_FRAME_MAGIC);
if ((n < 0) || (n > Y4M_LINE_MAX)) return Y4M_ERR_HEADER;
if ((err = y4m_snprint_xtags(s + n, sizeof(s) - n - 1, &(i->x_tags)))
!= Y4M_OK)
return err;
/* non-zero on error */
return (y4m_write(fd, s, strlen(s)) ? Y4M_ERR_SYSTEM : Y4M_OK);
}
static int y4m_write_frame_header2(FILE *fd, y4m_frame_info_t *i)
{
char s[Y4M_LINE_MAX+1];
int n;
int err;
n = snprintf(s, sizeof(s), "%s", Y4M_FRAME_MAGIC);
if (n < 0) return Y4M_ERR_HEADER;
if ((err = y4m_snprint_xtags(s + n, sizeof(s) - n - 1, y4m_fi_xtags(i)))
!= Y4M_OK)
return err;
/* zero on error */
return (fwrite(s, strlen(s), 1, fd) ? Y4M_OK : Y4M_ERR_SYSTEM);
}
int y4m_write_stream_header_cb(y4m_cb_writer_t * fd, const y4m_stream_info_t *i)
{
char s[Y4M_LINE_MAX+1];
int n;
int err;
y4m_ratio_t rate = i->framerate;
y4m_ratio_t aspect = i->sampleaspect;
const char *chroma_keyword = y4m_chroma_keyword(i->chroma);
if ((i->chroma == Y4M_UNKNOWN) || (chroma_keyword == NULL))
return Y4M_ERR_HEADER;
if (_y4mparam_feature_level < 1) {
if ((i->chroma != Y4M_CHROMA_420JPEG) &&
(i->chroma != Y4M_CHROMA_420MPEG2) &&
(i->chroma != Y4M_CHROMA_420PALDV))
return Y4M_ERR_FEATURE;
if (i->interlace == Y4M_ILACE_MIXED)
return Y4M_ERR_FEATURE;
}
y4m_ratio_reduce(&rate);
y4m_ratio_reduce(&aspect);
n = snprintf(s, sizeof(s), "%s W%d H%d F%d:%d I%s A%d:%d C%s",
Y4M_MAGIC,
i->width,
i->height,
rate.n, rate.d,
(i->interlace == Y4M_ILACE_NONE) ? "p" :
(i->interlace == Y4M_ILACE_TOP_FIRST) ? "t" :
(i->interlace == Y4M_ILACE_BOTTOM_FIRST) ? "b" :
(i->interlace == Y4M_ILACE_MIXED) ? "m" : "?",
aspect.n, aspect.d,
chroma_keyword
);
if ((n < 0) || (n > Y4M_LINE_MAX)) return Y4M_ERR_HEADER;
if ((err = y4m_snprint_xtags(s + n, sizeof(s) - n - 1, &(i->x_tags)))
!= Y4M_OK)
return err;
/* non-zero on error */
return (y4m_write_cb(fd, s, strlen(s)) ? Y4M_ERR_SYSTEM : Y4M_OK);
}
int y4m_write_stream_header(int fd, y4m_stream_info_t *i)
{
char s[Y4M_LINE_MAX+1];
int n;
int err;
y4m_ratio_reduce(&(i->framerate));
y4m_ratio_reduce(&(i->sampleaspect));
n = snprintf(s, sizeof(s), "%s W%d H%d F%d:%d I%s A%d:%d",
Y4M_MAGIC,
i->width,
i->height,
i->framerate.n, i->framerate.d,
(i->interlace == Y4M_ILACE_NONE) ? "p" :
(i->interlace == Y4M_ILACE_TOP_FIRST) ? "t" :
(i->interlace == Y4M_ILACE_BOTTOM_FIRST) ? "b" : "?",
i->sampleaspect.n, i->sampleaspect.d);
if ((n < 0) || (n > Y4M_LINE_MAX)) return Y4M_ERR_HEADER;
if ((err = y4m_snprint_xtags(s + n, sizeof(s) - n - 1, &(i->x_tags)))
!= Y4M_OK)
return err;
/* non-zero on error */
return (y4m_write(fd, s, strlen(s)) ? Y4M_ERR_SYSTEM : Y4M_OK);
}
int y4m_write_frame_header_cb(y4m_cb_writer_t * fd,
const y4m_stream_info_t *si,
const y4m_frame_info_t *fi)
{
char s[Y4M_LINE_MAX+1];
int n, err;
if (si->interlace == Y4M_ILACE_MIXED) {
if (_y4mparam_feature_level < 1) return Y4M_ERR_FEATURE;
n = snprintf(s, sizeof(s), "%s I%c%c%c", Y4M_FRAME_MAGIC,
(fi->presentation == Y4M_PRESENT_TOP_FIRST) ? 't' :
(fi->presentation == Y4M_PRESENT_TOP_FIRST_RPT) ? 'T' :
(fi->presentation == Y4M_PRESENT_BOTTOM_FIRST) ? 'b' :
(fi->presentation == Y4M_PRESENT_BOTTOM_FIRST_RPT) ? 'B' :
(fi->presentation == Y4M_PRESENT_PROG_SINGLE) ? '1' :
(fi->presentation == Y4M_PRESENT_PROG_DOUBLE) ? '2' :
(fi->presentation == Y4M_PRESENT_PROG_TRIPLE) ? '3' :
'?',
(fi->temporal == Y4M_SAMPLING_PROGRESSIVE) ? 'p' :
(fi->temporal == Y4M_SAMPLING_INTERLACED) ? 'i' :
'?',
(fi->spatial == Y4M_SAMPLING_PROGRESSIVE) ? 'p' :
(fi->spatial == Y4M_SAMPLING_INTERLACED) ? 'i' :
'?'
);
} else {
n = snprintf(s, sizeof(s), "%s", Y4M_FRAME_MAGIC);
}
if ((n < 0) || (n > Y4M_LINE_MAX)) return Y4M_ERR_HEADER;
if ((err = y4m_snprint_xtags(s + n, sizeof(s) - n - 1, &(fi->x_tags)))
!= Y4M_OK)
return err;
/* non-zero on error */
return (y4m_write_cb(fd, s, strlen(s)) ? Y4M_ERR_SYSTEM : Y4M_OK);
}
