On 2018-07-02 14:16, Alexandre Courbot wrote:
On Thu, Jun 28, 2018 at 12:28 AM Stanimir Varbanov
<stanimir.varbanov@xxxxxxxxxx> wrote:
This move the calculations of raw and compressed buffer sizes
on common helper and make it identical for encoder and decoder.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx>
---
drivers/media/platform/qcom/venus/helpers.c | 98
+++++++++++++++++++++++++++++
drivers/media/platform/qcom/venus/helpers.h | 2 +
drivers/media/platform/qcom/venus/vdec.c | 54 ++++------------
drivers/media/platform/qcom/venus/venc.c | 56 ++++-------------
4 files changed, 126 insertions(+), 84 deletions(-)
diff --git a/drivers/media/platform/qcom/venus/helpers.c
b/drivers/media/platform/qcom/venus/helpers.c
index 6b31c91528ed..a342472ae2f0 100644
--- a/drivers/media/platform/qcom/venus/helpers.c
+++ b/drivers/media/platform/qcom/venus/helpers.c
@@ -452,6 +452,104 @@ int venus_helper_get_bufreq(struct venus_inst
*inst, u32 type,
}
EXPORT_SYMBOL_GPL(venus_helper_get_bufreq);
+static u32 get_framesize_raw_nv12(u32 width, u32 height)
+{
+ u32 y_stride, uv_stride, y_plane;
+ u32 y_sclines, uv_sclines, uv_plane;
+ u32 size;
+
+ y_stride = ALIGN(width, 128);
+ uv_stride = ALIGN(width, 128);
+ y_sclines = ALIGN(height, 32);
+ uv_sclines = ALIGN(((height + 1) >> 1), 16);
+
+ y_plane = y_stride * y_sclines;
+ uv_plane = uv_stride * uv_sclines + SZ_4K;
+ size = y_plane + uv_plane + SZ_8K;
Do you know the reason for this extra 8K at the end?
As explained about the hardware requirement over bug [1], 8k is not
needed.
I am working on a patch to fix the alignment requirement for ubwc format
as
well.
In downstream driver, this 8k was added to accomodate the video
extradata.
[1] https://partnerissuetracker.corp.google.com/u/1/issues/110448791
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