V4L/DVB (13432): cx18: Adjust encoder VBI MDL size to be exactly frame's worth of VBI data
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c
index 87a735f..1a67ad5 100644
--- a/drivers/media/video/cx18/cx18-driver.c
+++ b/drivers/media/video/cx18/cx18-driver.c
@@ -87,7 +87,6 @@
static int enc_mpg_bufsize = CX18_DEFAULT_ENC_MPG_BUFSIZE;
static int enc_idx_bufsize = CX18_DEFAULT_ENC_IDX_BUFSIZE;
static int enc_yuv_bufsize = CX18_DEFAULT_ENC_YUV_BUFSIZE;
-/* VBI bufsize based on standards supported by card tuner for now */
static int enc_pcm_bufsize = CX18_DEFAULT_ENC_PCM_BUFSIZE;
static int enc_ts_bufs = -1;
@@ -128,7 +127,6 @@
module_param(enc_mpg_bufsize, int, 0644);
module_param(enc_idx_bufsize, int, 0644);
module_param(enc_yuv_bufsize, int, 0644);
-/* VBI bufsize based on standards supported by card tuner for now */
module_param(enc_pcm_bufsize, int, 0644);
module_param(enc_ts_bufs, int, 0644);
@@ -222,7 +220,7 @@
"\t\t\tDefault: " __stringify(CX18_DEFAULT_ENC_VBI_BUFFERS));
MODULE_PARM_DESC(enc_vbi_bufs,
"Number of encoder VBI buffers\n"
- "\t\t\tDefault is computed from enc_vbi_buffers & tuner std");
+ "\t\t\tDefault is computed from enc_vbi_buffers");
MODULE_PARM_DESC(enc_pcm_buffers,
"Encoder PCM buffer memory (MB). (enc_pcm_bufs can override)\n"
"\t\t\tDefault: " __stringify(CX18_DEFAULT_ENC_PCM_BUFFERS));
diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index 5c78b01..fe767b8 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -130,7 +130,6 @@
#define CX18_DEFAULT_ENC_MPG_BUFSIZE 32
#define CX18_DEFAULT_ENC_IDX_BUFSIZE 32
#define CX18_DEFAULT_ENC_YUV_BUFSIZE (CX18_UNIT_ENC_YUV_BUFSIZE * 3 / 1024 + 1)
-/* Default VBI bufsize based on standards supported by card tuner for now */
#define CX18_DEFAULT_ENC_PCM_BUFSIZE 4
/* i2c stuff */
diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c
index 7755937..c398651 100644
--- a/drivers/media/video/cx18/cx18-streams.c
+++ b/drivers/media/video/cx18/cx18-streams.c
@@ -515,6 +515,22 @@
if (s->mdl_size % s->buf_size)
s->bufs_per_mdl++;
break;
+ case CX18_ENC_STREAM_TYPE_VBI:
+ s->bufs_per_mdl = 1;
+ if (cx18_raw_vbi(s->cx)) {
+ s->mdl_size = (s->cx->is_60hz ? 12 : 18)
+ * 2 * vbi_active_samples;
+ } else {
+ /*
+ * See comment in cx18_vbi_setup() below about the
+ * extra lines we capture in sliced VBI mode due to
+ * the lines on which EAV RP codes toggle.
+ */
+ s->mdl_size = s->cx->is_60hz
+ ? (21 - 4 + 1) * 2 * vbi_hblank_samples_60Hz
+ : (23 - 2 + 1) * 2 * vbi_hblank_samples_50Hz;
+ }
+ break;
default:
s->bufs_per_mdl = 1;
s->mdl_size = s->buf_size * s->bufs_per_mdl;