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Issue #1939 - Part 2: Update libwebp source.

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This commit is contained in:
Job Bautista 2022-06-26 12:52:04 +08:00 • committed by roytam1
commit 8038505d6c
127 changed files with 34059 additions and 775 deletions
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97
media/libwebp/dec/vp8_dec.c
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@ -161,23 +161,26 @@ static int ParseSegmentHeader(VP8BitReader* br,
VP8SegmentHeader* hdr, VP8Proba* proba) {
assert(br != NULL);
assert(hdr != NULL);
hdr->use_segment_ = VP8Get(br);
hdr->use_segment_ = VP8Get(br, "global-header");
if (hdr->use_segment_) {
hdr->update_map_ = VP8Get(br);
if (VP8Get(br)) { // update data
hdr->update_map_ = VP8Get(br, "global-header");
if (VP8Get(br, "global-header")) { // update data
int s;
hdr->absolute_delta_ = VP8Get(br);
hdr->absolute_delta_ = VP8Get(br, "global-header");
for (s = 0; s < NUM_MB_SEGMENTS; ++s) {
hdr->quantizer_[s] = VP8Get(br) ? VP8GetSignedValue(br, 7) : 0;
hdr->quantizer_[s] = VP8Get(br, "global-header") ?
VP8GetSignedValue(br, 7, "global-header") : 0;
}
for (s = 0; s < NUM_MB_SEGMENTS; ++s) {
hdr->filter_strength_[s] = VP8Get(br) ? VP8GetSignedValue(br, 6) : 0;
hdr->filter_strength_[s] = VP8Get(br, "global-header") ?
VP8GetSignedValue(br, 6, "global-header") : 0;
}
}
if (hdr->update_map_) {
int s;
for (s = 0; s < MB_FEATURE_TREE_PROBS; ++s) {
proba->segments_[s] = VP8Get(br) ? VP8GetValue(br, 8) : 255u;
proba->segments_[s] = VP8Get(br, "global-header") ?
VP8GetValue(br, 8, "global-header") : 255u;
}
}
} else {
@ -205,7 +208,7 @@ static VP8StatusCode ParsePartitions(VP8Decoder* const dec,
size_t last_part;
size_t p;
dec->num_parts_minus_one_ = (1 << VP8GetValue(br, 2)) - 1;
dec->num_parts_minus_one_ = (1 << VP8GetValue(br, 2, "global-header")) - 1;
last_part = dec->num_parts_minus_one_;
if (size < 3 * last_part) {
// we can't even read the sizes with sz[]! That's a failure.
@ -229,21 +232,21 @@ static VP8StatusCode ParsePartitions(VP8Decoder* const dec,
// Paragraph 9.4
static int ParseFilterHeader(VP8BitReader* br, VP8Decoder* const dec) {
VP8FilterHeader* const hdr = &dec->filter_hdr_;
hdr->simple_ = VP8Get(br);
hdr->level_ = VP8GetValue(br, 6);
hdr->sharpness_ = VP8GetValue(br, 3);
hdr->use_lf_delta_ = VP8Get(br);
hdr->simple_ = VP8Get(br, "global-header");
hdr->level_ = VP8GetValue(br, 6, "global-header");
hdr->sharpness_ = VP8GetValue(br, 3, "global-header");
hdr->use_lf_delta_ = VP8Get(br, "global-header");
if (hdr->use_lf_delta_) {
if (VP8Get(br)) { // update lf-delta?
if (VP8Get(br, "global-header")) { // update lf-delta?
int i;
for (i = 0; i < NUM_REF_LF_DELTAS; ++i) {
if (VP8Get(br)) {
hdr->ref_lf_delta_[i] = VP8GetSignedValue(br, 6);
if (VP8Get(br, "global-header")) {
hdr->ref_lf_delta_[i] = VP8GetSignedValue(br, 6, "global-header");
}
}
for (i = 0; i < NUM_MODE_LF_DELTAS; ++i) {
if (VP8Get(br)) {
hdr->mode_lf_delta_[i] = VP8GetSignedValue(br, 6);
if (VP8Get(br, "global-header")) {
hdr->mode_lf_delta_[i] = VP8GetSignedValue(br, 6, "global-header");
}
}
}
@ -332,7 +335,7 @@ int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
io->scaled_width = io->width;
io->scaled_height = io->height;
io->mb_w = io->width; // sanity check
io->mb_w = io->width; // for soundness
io->mb_h = io->height; // ditto
VP8ResetProba(&dec->proba_);
@ -352,8 +355,8 @@ int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
buf_size -= frm_hdr->partition_length_;
if (frm_hdr->key_frame_) {
pic_hdr->colorspace_ = VP8Get(br);
pic_hdr->clamp_type_ = VP8Get(br);
pic_hdr->colorspace_ = VP8Get(br, "global-header");
pic_hdr->clamp_type_ = VP8Get(br, "global-header");
}
if (!ParseSegmentHeader(br, &dec->segment_hdr_, &dec->proba_)) {
return VP8SetError(dec, VP8_STATUS_BITSTREAM_ERROR,
@ -378,7 +381,7 @@ int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
"Not a key frame.");
}
VP8Get(br); // ignore the value of update_proba_
VP8Get(br, "global-header"); // ignore the value of update_proba_
VP8ParseProba(br, dec);
@ -400,31 +403,31 @@ static const uint8_t kZigzag[16] = {
0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15
};
// See section 13-2: http://tools.ietf.org/html/rfc6386#section-13.2
// See section 13-2: https://datatracker.ietf.org/doc/html/rfc6386#section-13.2
static int GetLargeValue(VP8BitReader* const br, const uint8_t* const p) {
int v;
if (!VP8GetBit(br, p[3])) {
if (!VP8GetBit(br, p[4])) {
if (!VP8GetBit(br, p[3], "coeffs")) {
if (!VP8GetBit(br, p[4], "coeffs")) {
v = 2;
} else {
v = 3 + VP8GetBit(br, p[5]);
v = 3 + VP8GetBit(br, p[5], "coeffs");
}
} else {
if (!VP8GetBit(br, p[6])) {
if (!VP8GetBit(br, p[7])) {
v = 5 + VP8GetBit(br, 159);
if (!VP8GetBit(br, p[6], "coeffs")) {
if (!VP8GetBit(br, p[7], "coeffs")) {
v = 5 + VP8GetBit(br, 159, "coeffs");
} else {
v = 7 + 2 * VP8GetBit(br, 165);
v += VP8GetBit(br, 145);
v = 7 + 2 * VP8GetBit(br, 165, "coeffs");
v += VP8GetBit(br, 145, "coeffs");
}
} else {
const uint8_t* tab;
const int bit1 = VP8GetBit(br, p[8]);
const int bit0 = VP8GetBit(br, p[9 + bit1]);
const int bit1 = VP8GetBit(br, p[8], "coeffs");
const int bit0 = VP8GetBit(br, p[9 + bit1], "coeffs");
const int cat = 2 * bit1 + bit0;
v = 0;
for (tab = kCat3456[cat]; *tab; ++tab) {
v += v + VP8GetBit(br, *tab);
v += v + VP8GetBit(br, *tab, "coeffs");
}
v += 3 + (8 << cat);
}
@ -438,24 +441,24 @@ static int GetCoeffsFast(VP8BitReader* const br,
int ctx, const quant_t dq, int n, int16_t* out) {
const uint8_t* p = prob[n]->probas_[ctx];
for (; n < 16; ++n) {
if (!VP8GetBit(br, p[0])) {
if (!VP8GetBit(br, p[0], "coeffs")) {
return n; // previous coeff was last non-zero coeff
}
while (!VP8GetBit(br, p[1])) { // sequence of zero coeffs
while (!VP8GetBit(br, p[1], "coeffs")) { // sequence of zero coeffs
p = prob[++n]->probas_[0];
if (n == 16) return 16;
}
{ // non zero coeff
const VP8ProbaArray* const p_ctx = &prob[n + 1]->probas_[0];
int v;
if (!VP8GetBit(br, p[2])) {
if (!VP8GetBit(br, p[2], "coeffs")) {
v = 1;
p = p_ctx[1];
} else {
v = GetLargeValue(br, p);
p = p_ctx[2];
}
out[kZigzag[n]] = VP8GetSigned(br, v) * dq[n > 0];
out[kZigzag[n]] = VP8GetSigned(br, v, "coeffs") * dq[n > 0];
}
}
return 16;
@ -468,36 +471,34 @@ static int GetCoeffsAlt(VP8BitReader* const br,
int ctx, const quant_t dq, int n, int16_t* out) {
const uint8_t* p = prob[n]->probas_[ctx];
for (; n < 16; ++n) {
if (!VP8GetBitAlt(br, p[0])) {
if (!VP8GetBitAlt(br, p[0], "coeffs")) {
return n; // previous coeff was last non-zero coeff
}
while (!VP8GetBitAlt(br, p[1])) { // sequence of zero coeffs
while (!VP8GetBitAlt(br, p[1], "coeffs")) { // sequence of zero coeffs
p = prob[++n]->probas_[0];
if (n == 16) return 16;
}
{ // non zero coeff
const VP8ProbaArray* const p_ctx = &prob[n + 1]->probas_[0];
int v;
if (!VP8GetBitAlt(br, p[2])) {
if (!VP8GetBitAlt(br, p[2], "coeffs")) {
v = 1;
p = p_ctx[1];
} else {
v = GetLargeValue(br, p);
p = p_ctx[2];
}
out[kZigzag[n]] = VP8GetSigned(br, v) * dq[n > 0];
out[kZigzag[n]] = VP8GetSigned(br, v, "coeffs") * dq[n > 0];
}
}
return 16;
}
static WEBP_TSAN_IGNORE_FUNCTION void InitGetCoeffs(void) {
if (GetCoeffs == NULL) {
if (VP8GetCPUInfo != NULL && VP8GetCPUInfo(kSlowSSSE3)) {
GetCoeffs = GetCoeffsAlt;
} else {
GetCoeffs = GetCoeffsFast;
}
WEBP_DSP_INIT_FUNC(InitGetCoeffs) {
if (VP8GetCPUInfo != NULL && VP8GetCPUInfo(kSlowSSSE3)) {
GetCoeffs = GetCoeffsAlt;
} else {
GetCoeffs = GetCoeffsFast;
}
}