From dd073434b5285121007860914a004320d644ee7e Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Fri, 12 Dec 2008 16:24:04 -0300 Subject: [PATCH] V4L/DVB (9805): cx18: Port fix for raw/sliced VBI mixup from ivtv and cx25840 This is a port of the fixes Hans Verkuil made for ivtv/cx25840: The service_set field was used to determine whether raw or sliced VBI was desired. This is incorrect since it is perfectly valid to select sliced VBI with a service_set of 0. Instead the driver should check on VIDIOC_S_FMT whether the type field matches the raw or sliced VBI type. Updated the cx18 driver accordingly, including an additional check in cx18_start_v4l2_encode_stream() that didn't exist in ivtv. Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx18/cx18-av-vbi.c | 5 +++-- drivers/media/video/cx18/cx18-driver.c | 2 +- drivers/media/video/cx18/cx18-driver.h | 6 ++++++ drivers/media/video/cx18/cx18-fileops.c | 10 ++++------ drivers/media/video/cx18/cx18-ioctl.c | 7 +++---- drivers/media/video/cx18/cx18-streams.c | 6 +++--- drivers/media/video/cx18/cx18-vbi.c | 2 +- 7 files changed, 21 insertions(+), 17 deletions(-) diff --git a/drivers/media/video/cx18/cx18-av-vbi.c b/drivers/media/video/cx18/cx18-av-vbi.c index 02fdf57..1527ea4 100644 --- a/drivers/media/video/cx18/cx18-av-vbi.c +++ b/drivers/media/video/cx18/cx18-av-vbi.c @@ -141,10 +141,11 @@ int cx18_av_vbi(struct cx18 *cx, unsigned int cmd, void *arg) u8 lcr[24]; fmt = arg; - if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) + if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE && + fmt->type != V4L2_BUF_TYPE_VBI_CAPTURE) return -EINVAL; svbi = &fmt->fmt.sliced; - if (svbi->service_set == 0) { + if (fmt->type == V4L2_BUF_TYPE_VBI_CAPTURE) { /* raw VBI */ memset(svbi, 0, sizeof(*svbi)); diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c index 255d547..e845cd6 100644 --- a/drivers/media/video/cx18/cx18-driver.c +++ b/drivers/media/video/cx18/cx18-driver.c @@ -594,7 +594,7 @@ static int __devinit cx18_init_struct1(struct cx18 *cx) init_waitqueue_head(&cx->dma_waitq); /* VBI */ - cx->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE; + cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE; cx->vbi.sliced_in = &cx->vbi.in.fmt.sliced; cx->vbi.raw_size = 1456; cx->vbi.raw_decoder_line_size = 1456; diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h index 29c296f..018d98f 100644 --- a/drivers/media/video/cx18/cx18-driver.h +++ b/drivers/media/video/cx18/cx18-driver.h @@ -504,4 +504,10 @@ void cx18_read_eeprom(struct cx18 *cx, struct tveeprom *tv); /* First-open initialization: load firmware, etc. */ int cx18_init_on_first_open(struct cx18 *cx); +/* Test if the current VBI mode is raw (1) or sliced (0) */ +static inline int cx18_raw_vbi(const struct cx18 *cx) +{ + return cx->vbi.in.type == V4L2_BUF_TYPE_VBI_CAPTURE; +} + #endif /* CX18_DRIVER_H */ diff --git a/drivers/media/video/cx18/cx18-fileops.c b/drivers/media/video/cx18/cx18-fileops.c index 61192e6..1856d59 100644 --- a/drivers/media/video/cx18/cx18-fileops.c +++ b/drivers/media/video/cx18/cx18-fileops.c @@ -67,12 +67,11 @@ static int cx18_claim_stream(struct cx18_open_id *id, int type) } s->id = id->open_id; - /* CX18_DEC_STREAM_TYPE_MPG needs to claim CX18_DEC_STREAM_TYPE_VBI, - CX18_ENC_STREAM_TYPE_MPG needs to claim CX18_ENC_STREAM_TYPE_VBI + /* CX18_ENC_STREAM_TYPE_MPG needs to claim CX18_ENC_STREAM_TYPE_VBI (provided VBI insertion is on and sliced VBI is selected), for all other streams we're done */ if (type == CX18_ENC_STREAM_TYPE_MPG && - cx->vbi.insert_mpeg && cx->vbi.sliced_in->service_set) { + cx->vbi.insert_mpeg && !cx18_raw_vbi(cx)) { vbi_type = CX18_ENC_STREAM_TYPE_VBI; } else { return 0; @@ -258,7 +257,7 @@ static size_t cx18_copy_buf_to_user(struct cx18_stream *s, if (len > ucount) len = ucount; if (cx->vbi.insert_mpeg && s->type == CX18_ENC_STREAM_TYPE_MPG && - cx->vbi.sliced_in->service_set && buf != &cx->vbi.sliced_mpeg_buf) { + !cx18_raw_vbi(cx) && buf != &cx->vbi.sliced_mpeg_buf) { const char *start = buf->buf + buf->readpos; const char *p = start + 1; const u8 *q; @@ -333,8 +332,7 @@ static ssize_t cx18_read(struct cx18_stream *s, char __user *ubuf, /* Each VBI buffer is one frame, the v4l2 API says that for VBI the frames should arrive one-by-one, so make sure we never output more than one VBI frame at a time */ - if (s->type == CX18_ENC_STREAM_TYPE_VBI && - cx->vbi.sliced_in->service_set) + if (s->type == CX18_ENC_STREAM_TYPE_VBI && !cx18_raw_vbi(cx)) single_frame = 1; for (;;) { diff --git a/drivers/media/video/cx18/cx18-ioctl.c b/drivers/media/video/cx18/cx18-ioctl.c index ece799e..e608748 100644 --- a/drivers/media/video/cx18/cx18-ioctl.c +++ b/drivers/media/video/cx18/cx18-ioctl.c @@ -238,13 +238,12 @@ static int cx18_s_fmt_vbi_cap(struct file *file, void *fh, if (ret) return ret; - if (id->type == CX18_ENC_STREAM_TYPE_VBI && - cx->vbi.sliced_in->service_set && - atomic_read(&cx->ana_capturing) > 0) + if (!cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0) return -EBUSY; cx->vbi.sliced_in->service_set = 0; - cx18_av_cmd(cx, VIDIOC_S_FMT, &cx->vbi.in); + cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE; + cx18_av_cmd(cx, VIDIOC_S_FMT, fmt); return cx18_g_fmt_vbi_cap(file, fh, fmt); } diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c index 9ead459..c87cd53 100644 --- a/drivers/media/video/cx18/cx18-streams.c +++ b/drivers/media/video/cx18/cx18-streams.c @@ -340,7 +340,7 @@ void cx18_streams_cleanup(struct cx18 *cx, int unregister) static void cx18_vbi_setup(struct cx18_stream *s) { struct cx18 *cx = s->cx; - int raw = cx->vbi.sliced_in->service_set == 0; + int raw = cx18_raw_vbi(cx); u32 data[CX2341X_MBOX_MAX_DATA]; int lines; @@ -471,8 +471,8 @@ int cx18_start_v4l2_encode_stream(struct cx18_stream *s) captype = CAPTURE_CHANNEL_TYPE_PCM; break; case CX18_ENC_STREAM_TYPE_VBI: - captype = cx->vbi.sliced_in->service_set ? - CAPTURE_CHANNEL_TYPE_SLICED_VBI : CAPTURE_CHANNEL_TYPE_VBI; + captype = cx18_raw_vbi(cx) ? + CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI; cx->vbi.frame = 0; cx->vbi.inserted_frame = 0; memset(cx->vbi.sliced_mpeg_size, diff --git a/drivers/media/video/cx18/cx18-vbi.c b/drivers/media/video/cx18/cx18-vbi.c index 22e76ee..03f0e81 100644 --- a/drivers/media/video/cx18/cx18-vbi.c +++ b/drivers/media/video/cx18/cx18-vbi.c @@ -160,7 +160,7 @@ void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf, return; /* Raw VBI data */ - if (cx->vbi.sliced_in->service_set == 0) { + if (cx18_raw_vbi(cx)) { u8 type; cx18_buf_swap(buf); -- 2.7.4