From: Sreerenj Balachandran <[email protected]>
For eg: The uint8_t will simple overflow if submitted
quality factor is 1 (5000/1).
---
src/gen8_mfc.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/gen8_mfc.c b/src/gen8_mfc.c
index 314b882..698dcae 100644
--- a/src/gen8_mfc.c
+++ b/src/gen8_mfc.c
@@ -2674,7 +2674,7 @@ gen8_mfc_jpeg_fqm_state(VADriverContextP ctx,
struct intel_encoder_context *encoder_context,
struct encode_state *encode_state)
{
- uint8_t quality = 0;
+ unsigned int quality = 0;
uint32_t temp, i = 0, j = 0, dword_qm[32];
VAEncPictureParameterBufferJPEG *pic_param;
VAQMatrixBufferJPEG *qmatrix;
@@ -2706,7 +2706,9 @@ gen8_mfc_jpeg_fqm_state(VADriverContextP ctx,
qmatrix->load_lum_quantiser_matrix = 1;
qmatrix->load_chroma_quantiser_matrix = (pic_param->num_components >
1) ? 1 : 0;
}
-
+
+ if (quality > 100)
+ quality = 100;
quality = (quality < 50) ? (5000/quality) : (200 - (quality*2));
quality = (quality == 0) ? 1 : quality;
--
1.9.1
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