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Fix JPEG decoding of an oddly encoded files on gen7/8 #530

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Fix JPEG decoding of an oddly encoded files on gen7/8 #530

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6 changes: 4 additions & 2 deletions src/gen75_mfd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2844,7 +2844,7 @@ gen75_mfd_jpeg_qm_state(VADriverContextP ctx,
assert(pic_param->num_components <= 3);

for (index = 0; index < pic_param->num_components; index++) {
int id = pic_param->components[index].component_id - pic_param->components[0].component_id + 1;
unsigned char 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];
Expand Down Expand Up @@ -2875,14 +2875,16 @@ gen75_mfd_jpeg_bsd_object(VADriverContextP ctx,
{
struct intel_batchbuffer *batch = gen7_mfd_context->base.batch;
int scan_component_mask = 0;
unsigned char id;
int i;

assert(slice_param->num_components > 0);
assert(slice_param->num_components < 4);
assert(slice_param->num_components <= pic_param->num_components);

for (i = 0; i < slice_param->num_components; i++) {
switch (slice_param->components[i].component_selector - pic_param->components[0].component_id + 1) {
id = slice_param->components[i].component_selector - pic_param->components[0].component_id + 1;
switch (id) {
case 1:
scan_component_mask |= (1 << 0);
break;
Expand Down
6 changes: 4 additions & 2 deletions src/gen7_mfd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2497,7 +2497,7 @@ gen7_mfd_jpeg_qm_state(VADriverContextP ctx,
assert(pic_param->num_components <= 3);

for (index = 0; index < pic_param->num_components; index++) {
int id = pic_param->components[index].component_id - pic_param->components[0].component_id + 1;
unsigned char 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];
Expand Down Expand Up @@ -2528,14 +2528,16 @@ gen7_mfd_jpeg_bsd_object(VADriverContextP ctx,
{
struct intel_batchbuffer *batch = gen7_mfd_context->base.batch;
int scan_component_mask = 0;
unsigned char id;
int i;

assert(slice_param->num_components > 0);
assert(slice_param->num_components < 4);
assert(slice_param->num_components <= pic_param->num_components);

for (i = 0; i < slice_param->num_components; i++) {
switch (slice_param->components[i].component_selector - pic_param->components[0].component_id + 1) {
id = slice_param->components[i].component_selector - pic_param->components[0].component_id + 1;
switch (id) {
case 1:
scan_component_mask |= (1 << 0);
break;
Expand Down
6 changes: 4 additions & 2 deletions src/gen8_mfd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2550,7 +2550,7 @@ gen8_mfd_jpeg_qm_state(VADriverContextP ctx,
assert(pic_param->num_components <= 3);

for (index = 0; index < pic_param->num_components; index++) {
int id = pic_param->components[index].component_id - pic_param->components[0].component_id + 1;
unsigned char 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];
Expand Down Expand Up @@ -2581,14 +2581,16 @@ gen8_mfd_jpeg_bsd_object(VADriverContextP ctx,
{
struct intel_batchbuffer *batch = gen7_mfd_context->base.batch;
int scan_component_mask = 0;
unsigned char id;
int i;

assert(slice_param->num_components > 0);
assert(slice_param->num_components < 4);
assert(slice_param->num_components <= pic_param->num_components);

for (i = 0; i < slice_param->num_components; i++) {
switch (slice_param->components[i].component_selector - pic_param->components[0].component_id + 1) {
id = slice_param->components[i].component_selector - pic_param->components[0].component_id + 1;
switch (id) {
case 1:
scan_component_mask |= (1 << 0);
break;
Expand Down