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misc code cleanup

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* remove dec->skip_
* fix some naming

(no speed diff observed)

Change-Id: I12545ef79d29dd6f893c344d8fb171b0a8c7cc46
This commit is contained in:
skal 2013-05-15 20:03:15 +02:00
parent 83db404390
commit 2451e47dca
3 changed files with 30 additions and 31 deletions
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22
src/dec/frame.c
View File

@ -534,7 +534,7 @@ static const int kScan[16] = {
0 + 12 * BPS, 4 + 12 * BPS, 8 + 12 * BPS, 12 + 12 * BPS
};
static WEBP_INLINE int CheckMode(int mb_x, int mb_y, int mode) {
static int CheckMode(int mb_x, int mb_y, int mode) {
if (mode == B_DC_PRED) {
if (mb_x == 0) {
return (mb_y == 0) ? B_DC_PRED_NOTOPLEFT : B_DC_PRED_NOLEFT;
@ -545,11 +545,11 @@ static WEBP_INLINE int CheckMode(int mb_x, int mb_y, int mode) {
return mode;
}
static WEBP_INLINE void Copy32b(uint8_t* dst, uint8_t* src) {
*(uint32_t*)dst = *(uint32_t*)src;
static void Copy32b(uint8_t* dst, uint8_t* src) {
memcpy(dst, src, 4);
}
void VP8ReconstructBlock(VP8Decoder* const dec) {
void VP8ReconstructBlock(const VP8Decoder* const dec) {
int j;
uint8_t* const y_dst = dec->yuv_b_ + Y_OFF;
uint8_t* const u_dst = dec->yuv_b_ + U_OFF;
@ -583,7 +583,7 @@ void VP8ReconstructBlock(VP8Decoder* const dec) {
uint8_t* const top_y = dec->y_t_ + dec->mb_x_ * 16;
uint8_t* const top_u = dec->u_t_ + dec->mb_x_ * 8;
uint8_t* const top_v = dec->v_t_ + dec->mb_x_ * 8;
const int16_t* coeffs = dec->coeffs_;
const int16_t* const coeffs = dec->coeffs_;
int n;
if (dec->mb_y_ > 0) {
@ -659,13 +659,13 @@ void VP8ReconstructBlock(VP8Decoder* const dec) {
VP8TransformDCUV(v_coeffs, v_dst);
}
}
}
// stash away top samples for next block
if (dec->mb_y_ < dec->mb_h_ - 1) {
memcpy(top_y, y_dst + 15 * BPS, 16);
memcpy(top_u, u_dst + 7 * BPS, 8);
memcpy(top_v, v_dst + 7 * BPS, 8);
}
// stash away top samples for next block
if (dec->mb_y_ < dec->mb_h_ - 1) {
memcpy(top_y, y_dst + 15 * BPS, 16);
memcpy(top_u, u_dst + 7 * BPS, 8);
memcpy(top_v, v_dst + 7 * BPS, 8);
}
}
// Transfer reconstructed samples from yuv_b_ cache to final destination.

32
src/dec/vp8.c
View File

@ -524,11 +524,11 @@ static const PackedNz kUnpackTab[16] = {
#endif
#define PACK(X, S) ((((X).i32 * PACK_CST) & 0xff000000) >> (S))
static void ParseResiduals(VP8Decoder* const dec,
VP8MB* const mb, VP8BitReader* const token_br) {
static int ParseResiduals(VP8Decoder* const dec,
VP8MB* const mb, VP8BitReader* const token_br) {
int out_t_nz, out_l_nz, first;
ProbaArray ac_prob;
const VP8QuantMatrix* q = &dec->dqm_[dec->segment_];
const VP8QuantMatrix* const q = &dec->dqm_[dec->segment_];
int16_t* dst = dec->coeffs_;
VP8MB* const left_mb = dec->mb_info_ - 1;
PackedNz nz_ac, nz_dc;
@ -537,12 +537,11 @@ static void ParseResiduals(VP8Decoder* const dec,
uint32_t non_zero_dc = 0;
int x, y, ch;
nz_dc.i32 = nz_ac.i32 = 0;
memset(dst, 0, 384 * sizeof(*dst));
if (!dec->is_i4x4_) { // parse DC
int16_t dc[16] = { 0 };
const int ctx = mb->dc_nz_ + left_mb->dc_nz_;
mb->dc_nz_ = left_mb->dc_nz_ =
const int ctx = mb->nz_dc_ + left_mb->nz_dc_;
mb->nz_dc_ = left_mb->nz_dc_ =
(GetCoeffs(token_br, (ProbaArray)dec->proba_.coeffs_[1],
ctx, q->y2_mat_, 0, dc) > 0);
first = 1;
@ -600,7 +599,7 @@ static void ParseResiduals(VP8Decoder* const dec,
dec->non_zero_ac_ = non_zero_ac;
dec->non_zero_ = non_zero_ac | non_zero_dc;
mb->skip_ = !dec->non_zero_;
return !dec->non_zero_; // will be used for further optimization
}
#undef PACK
@ -610,7 +609,8 @@ static void ParseResiduals(VP8Decoder* const dec,
int VP8DecodeMB(VP8Decoder* const dec, VP8BitReader* const token_br) {
VP8BitReader* const br = &dec->br_;
VP8MB* const left = dec->mb_info_ - 1;
VP8MB* const info = dec->mb_info_ + dec->mb_x_;
VP8MB* const mb = dec->mb_info_ + dec->mb_x_;
int skip;
// Note: we don't save segment map (yet), as we don't expect
// to decode more than 1 keyframe.
@ -620,19 +620,19 @@ int VP8DecodeMB(VP8Decoder* const dec, VP8BitReader* const token_br) {
VP8GetBit(br, dec->proba_.segments_[1]) :
2 + VP8GetBit(br, dec->proba_.segments_[2]);
}
info->skip_ = dec->use_skip_proba_ ? VP8GetBit(br, dec->skip_p_) : 0;
skip = dec->use_skip_proba_ ? VP8GetBit(br, dec->skip_p_) : 0;
VP8ParseIntraMode(br, dec);
if (br->eof_) {
return 0;
}
if (!info->skip_) {
ParseResiduals(dec, info, token_br);
if (!skip) {
skip = ParseResiduals(dec, mb, token_br);
} else {
left->nz_ = info->nz_ = 0;
left->nz_ = mb->nz_ = 0;
if (!dec->is_i4x4_) {
left->dc_nz_ = info->dc_nz_ = 0;
left->nz_dc_ = mb->nz_dc_ = 0;
}
dec->non_zero_ = 0;
dec->non_zero_ac_ = 0;
@ -641,16 +641,16 @@ int VP8DecodeMB(VP8Decoder* const dec, VP8BitReader* const token_br) {
if (dec->filter_type_ > 0) { // store filter info
VP8FInfo* const finfo = dec->f_info_ + dec->mb_x_;
*finfo = dec->fstrengths_[dec->segment_][dec->is_i4x4_];
finfo->f_inner_ = (!info->skip_ || dec->is_i4x4_);
finfo->f_inner_ = !skip || dec->is_i4x4_;
}
return (!token_br->eof_);
return !token_br->eof_;
}
void VP8InitScanline(VP8Decoder* const dec) {
VP8MB* const left = dec->mb_info_ - 1;
left->nz_ = 0;
left->dc_nz_ = 0;
left->nz_dc_ = 0;
memset(dec->intra_l_, B_DC_PRED, sizeof(dec->intra_l_));
dec->filter_row_ =
(dec->filter_type_ > 0) &&

7
src/dec/vp8i.h
View File

@ -159,9 +159,8 @@ typedef struct { // filter specs
typedef struct { // used for syntax-parsing
unsigned int nz_:24; // non-zero AC/DC coeffs (24bit)
unsigned int dc_nz_:1; // non-zero DC coeffs
unsigned int skip_:1; // block type
unsigned int pad_:6;
unsigned int nz_dc_:1; // non-zero DC coeffs
unsigned int pad_:7;
} VP8MB;
// Dequantization matrices
@ -304,7 +303,7 @@ void VP8ParseQuant(VP8Decoder* const dec);
// in frame.c
int VP8InitFrame(VP8Decoder* const dec, VP8Io* io);
// Predict a block and add residual
void VP8ReconstructBlock(VP8Decoder* const dec);
void VP8ReconstructBlock(const VP8Decoder* const dec);
// Call io->setup() and finish setting up scan parameters.
// After this call returns, one must always call VP8ExitCritical() with the
// same parameters. Both functions should be used in pair. Returns VP8_STATUS_OK