diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-vbi.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-vbi.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/drivers/media/video/cx18/cx18-vbi.c b/drivers/media/video/cx18/cx18-vbi.c index d6e15e119582..d8e7d371c8e2 100644 --- a/drivers/media/video/cx18/cx18-vbi.c +++ b/drivers/media/video/cx18/cx18-vbi.c @@ -179,6 +179,10 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, if (streamtype != CX18_ENC_STREAM_TYPE_VBI) return; + /* + * The CX23418 sends us data that is 32 bit LE swapped, but we want + * the raw VBI bytes in the order they were in the raster line + */ cx18_buf_swap(buf); /* @@ -190,17 +194,27 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, if (cx18_raw_vbi(cx)) { u8 type; - /* Skip 12 bytes of header that gets stuffed in */ + /* + * We've set up to get a field's worth of VBI data at a time. + * Skip 12 bytes of header prefixing the first field or the + * last 12 bytes in the last VBI line from the first field that + * prefixes the second field. + */ size -= 12; memcpy(p, &buf->buf[12], size); type = p[3]; + /* Extrapolate the last 12 bytes of the field's last line */ + memset(&p[size], (int) p[size - 1], 12); + size = buf->bytesused = compress_raw_buf(cx, p, size); - /* second field of the frame? */ if (type == raw_vbi_sav_rp[1]) { - /* Dirty hack needed for backwards - compatibility of old VBI software. */ + /* + * Hack needed for compatibility with old VBI software. + * Write the frame # at the end of the last line of the + * second field + */ p += size - 4; memcpy(p, &cx->vbi.frame, 4); cx->vbi.frame++; @@ -210,7 +224,7 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, /* Sliced VBI data with data insertion */ - pts = (q[0] == 0x3fffffff) ? q[2] : 0; + pts = (be32_to_cpu(q[0] == 0x3fffffff)) ? be32_to_cpu(q[2]) : 0; /* first field */ /* compress_sliced_buf() will skip the 12 bytes of header */ |