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-rwxr-xr-xsrc/gen7_mfd.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/gen7_mfd.c b/src/gen7_mfd.c
index c081826..ed463d9 100755
--- a/src/gen7_mfd.c
+++ b/src/gen7_mfd.c
@@ -2035,14 +2035,20 @@ gen7_mfd_jpeg_qm_state(VADriverContextP ctx,
assert(pic_param->num_components <= 3);
for (index = 0; index < pic_param->num_components; index++) {
- int qm_type = va_to_gen7_jpeg_qm[pic_param->components[index].component_id - pic_param->components[0].component_id + 1];
+ int id = pic_param->components[index].component_id - pic_param->components[0].component_id + 1;
+ int qm_type;
unsigned char *qm = iq_matrix->quantiser_table[pic_param->components[index].quantiser_table_selector];
unsigned char raster_qm[64];
int j;
+ if (id > 4 || id < 1)
+ continue;
+
if (!iq_matrix->load_quantiser_table[pic_param->components[index].quantiser_table_selector])
continue;
+ qm_type = va_to_gen7_jpeg_qm[id];
+
for (j = 0; j < 64; j++)
raster_qm[zigzag_direct[j]] = qm[j];