From e3cccff9aa93679f1b9d23080cc07197f58588f4 Mon Sep 17 00:00:00 2001
From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Fri, 23 Jan 2015 13:51:28 -0300
Subject: [PATCH] [media] coda: don't ever use subsampling ping-pong buffers as
reconstructed reference buffers
On i.MX6, two subsampling ping-pong buffers are used for motion estimation and
deblocking They should not be counted as framebuffers, or they will be also used
to store reconstructed frames, causing visible artifacts in P-frames.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
drivers/media/platform/coda/coda-bit.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c
index 6ecfd29b7d988..7cdddd55d65df 100644
--- a/drivers/media/platform/coda/coda-bit.c
+++ b/drivers/media/platform/coda/coda-bit.c
@@ -718,6 +718,7 @@ static int coda_start_encoding(struct coda_ctx *ctx)
struct vb2_buffer *buf;
int gamma, ret, value;
u32 dst_fourcc;
+ int num_fb;
u32 stride;
q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
@@ -983,12 +984,14 @@ static int coda_start_encoding(struct coda_ctx *ctx)
v4l2_err(v4l2_dev, "failed to allocate framebuffers\n");
goto out;
}
+ num_fb = 2;
stride = q_data_src->bytesperline;
} else {
ctx->num_internal_frames = 0;
+ num_fb = 0;
stride = 0;
}
- coda_write(dev, ctx->num_internal_frames, CODA_CMD_SET_FRAME_BUF_NUM);
+ coda_write(dev, num_fb, CODA_CMD_SET_FRAME_BUF_NUM);
coda_write(dev, stride, CODA_CMD_SET_FRAME_BUF_STRIDE);
if (dev->devtype->product == CODA_7541) {
--
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