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V4L/DVB (10440): cx18: Fix presentation timestamp (PTS) for VBI buffers

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The old code from ivtv used a CX23415/6 PTS, which was simply left at 0 in the
cx18 driver.  Since the CX23418 gives us what I think is a PTS (or some other
90 kHz clock count) with each VBI buffer, this change has the cx18 driver use
that as a PTS.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Andy Walls 2009-02-01 21:42:12 -03:00 committed by Mauro Carvalho Chehab
parent 302df97021
commit 776fa86988
4 changed files with 12 additions and 13 deletions
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1
drivers/media/video/cx18/cx18-driver.h
View file

@ -293,7 +293,6 @@ struct cx18_stream {
int dma; /* can be PCI_DMA_TODEVICE,
PCI_DMA_FROMDEVICE or
PCI_DMA_NONE */
u64 dma_pts;
wait_queue_head_t waitq;
/* Buffer Stats */

4
drivers/media/video/cx18/cx18-fileops.c
View file

@ -188,7 +188,6 @@ static struct cx18_buffer *cx18_get_buffer(struct cx18_stream *s, int non_block,
while ((buf = cx18_dequeue(s_vbi, &s_vbi->q_full))) {
/* byteswap and process VBI data */
cx18_process_vbi_data(cx, buf,
s_vbi->dma_pts,
s_vbi->type);
cx18_stream_put_buf_fw(s_vbi, buf);
}
@ -209,8 +208,7 @@ static struct cx18_buffer *cx18_get_buffer(struct cx18_stream *s, int non_block,
cx18_buf_swap(buf);
else {
/* byteswap and process VBI data */
cx18_process_vbi_data(cx, buf,
s->dma_pts, s->type);
cx18_process_vbi_data(cx, buf, s->type);
}
return buf;
}

18
drivers/media/video/cx18/cx18-vbi.c
View file

@ -168,27 +168,28 @@ static u32 compress_sliced_buf(struct cx18 *cx, u32 line, u8 *buf,
}
void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf,
u64 pts_stamp, int streamtype)
int streamtype)
{
u8 *p = (u8 *) buf->buf;
u32 *q = (u32 *) buf->buf;
u32 size = buf->bytesused;
u32 pts;
int lines;
if (streamtype != CX18_ENC_STREAM_TYPE_VBI)
return;
cx18_buf_swap(buf);
/*
* Note the CX23418 provides a 12 byte header, in it's raw VBI
* buffers to us, that we currently throw away:
* 0x3fffffff [4 bytes of something] [4 byte timestamp]
* The CX23418 provides a 12 byte header in it's raw VBI buffers to us:
* 0x3fffffff [4 bytes of something] [4 byte presentation time stamp?]
*/
/* Raw VBI data */
if (cx18_raw_vbi(cx)) {
u8 type;
cx18_buf_swap(buf);
/* Skip 12 bytes of header that gets stuffed in */
size -= 12;
memcpy(p, &buf->buf[12], size);
@ -208,7 +209,8 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf,
}
/* Sliced VBI data with data insertion */
cx18_buf_swap(buf);
pts = (q[0] == 0x3fffffff) ? q[2] : 0;
/* first field */
/* compress_sliced_buf() will skip the 12 bytes of header */
@ -230,6 +232,6 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf,
memcpy(p, &cx->vbi.sliced_data[0], size);
if (cx->vbi.insert_mpeg)
copy_vbi_data(cx, lines, pts_stamp);
copy_vbi_data(cx, lines, pts);
cx->vbi.frame++;
}

2
drivers/media/video/cx18/cx18-vbi.h
View file

@ -22,5 +22,5 @@
*/
void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf,
u64 pts_stamp, int streamtype);
int streamtype);
int cx18_used_line(struct cx18 *cx, int line, int field);