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Adding vp9_read_and_apply_sign function.

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Change-Id: I9951a06dbe4514cc1cf69ff4349c4e12cb4a318c
This commit is contained in:
Dmitry Kovalev 2013-04-11 15:36:43 -07:00
parent c18b2617a4
commit 4fdf8ccca2
3 changed files with 11 additions and 22 deletions
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23
vp9/decoder/vp9_decodframe.c
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@ -868,10 +868,8 @@ static int get_delta_q(vp9_reader *r, int *dq) {
const int old_value = *dq;
if (vp9_read_bit(r)) { // Update bit
int value = vp9_read_literal(r, 4);
if (vp9_read_bit(r)) // Sign bit
value = -value;
*dq = value;
const int value = vp9_read_literal(r, 4);
*dq = vp9_read_and_apply_sign(r, value);
}
// Trigger a quantizer update if the delta-q value has changed
@ -1255,9 +1253,8 @@ static void setup_segmentation(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
if (feature_enabled) {
vp9_enable_segfeature(xd, i, j);
data = vp9_decode_unsigned_max(r, vp9_seg_feature_data_max(j));
if (vp9_is_segfeature_signed(j) && vp9_read_bit(r)) {
data = -data;
}
if (vp9_is_segfeature_signed(j))
data = vp9_read_and_apply_sign(r, data);
}
vp9_set_segdata(xd, i, j, data);
}
@ -1306,19 +1303,15 @@ static void setup_loopfilter(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
for (i = 0; i < MAX_REF_LF_DELTAS; i++) {
if (vp9_read_bit(r)) {
int value = vp9_read_literal(r, 6);
if (vp9_read_bit(r))
value = -value;
xd->ref_lf_deltas[i] = value;
const int value = vp9_read_literal(r, 6);
xd->ref_lf_deltas[i] = vp9_read_and_apply_sign(r, value);
}
}
for (i = 0; i < MAX_MODE_LF_DELTAS; i++) {
if (vp9_read_bit(r)) {
int value = vp9_read_literal(r, 6);
if (vp9_read_bit(r))
value = -value;
xd->mode_lf_deltas[i] = value;
const int value = vp9_read_literal(r, 6);
xd->mode_lf_deltas[i] = vp9_read_and_apply_sign(r, value);
}
}
}

9
vp9/decoder/vp9_detokenize.c
View File

@ -59,11 +59,6 @@ static const vp9_prob cat6_prob[15] = {
DECLARE_ALIGNED(16, extern const uint8_t, vp9_norm[256]);
static int16_t get_signed(BOOL_DECODER *br, int16_t value_to_sign) {
return decode_bool(br, 128) ? -value_to_sign : value_to_sign;
}
#define INCREMENT_COUNT(token) \
do { \
coef_counts[type][ref][get_coef_band(scan, txfm_size, c)] \
@ -76,7 +71,7 @@ static int16_t get_signed(BOOL_DECODER *br, int16_t value_to_sign) {
#if CONFIG_CODE_NONZEROCOUNT
#define WRITE_COEF_CONTINUE(val, token) \
{ \
qcoeff_ptr[scan[c]] = get_signed(br, val); \
qcoeff_ptr[scan[c]] = vp9_read_and_apply_sign(br, val); \
INCREMENT_COUNT(token); \
c++; \
nzc++; \
@ -85,7 +80,7 @@ static int16_t get_signed(BOOL_DECODER *br, int16_t value_to_sign) {
#else
#define WRITE_COEF_CONTINUE(val, token) \
{ \
qcoeff_ptr[scan[c]] = get_signed(br, val); \
qcoeff_ptr[scan[c]] = vp9_read_and_apply_sign(br, val); \
INCREMENT_COUNT(token); \
c++; \
continue; \

1
vp9/decoder/vp9_treereader.h
View File

@ -21,6 +21,7 @@ typedef BOOL_DECODER vp9_reader;
#define vp9_read_literal decode_value
#define vp9_read_bit(r) vp9_read(r, vp9_prob_half)
#define vp9_read_prob(r) ((vp9_prob)vp9_read_literal(r, 8))
#define vp9_read_and_apply_sign(r, value) (vp9_read_bit(r) ? -(value) : (value))
// Intent of tree data structure is to make decoding trivial.
static int treed_read(vp9_reader *const r, /* !!! must return a 0 or 1 !!! */