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Update libwebp to 1.0.3

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This commit is contained in:
volzhs
2019-10-27 21:29:43 +09:00
parent 9e572b5bac
commit 074d421dca
40 changed files with 454 additions and 332 deletions
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86
thirdparty/libwebp/src/utils/bit_reader_utils.c vendored
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@@ -109,17 +109,18 @@ void VP8LoadFinalBytes(VP8BitReader* const br) {
//------------------------------------------------------------------------------
// Higher-level calls
uint32_t VP8GetValue(VP8BitReader* const br, int bits) {
uint32_t VP8GetValue(VP8BitReader* const br, int bits, const char label[]) {
uint32_t v = 0;
while (bits-- > 0) {
v |= VP8GetBit(br, 0x80) << bits;
v |= VP8GetBit(br, 0x80, label) << bits;
}
return v;
}
int32_t VP8GetSignedValue(VP8BitReader* const br, int bits) {
const int value = VP8GetValue(br, bits);
return VP8Get(br) ? -value : value;
int32_t VP8GetSignedValue(VP8BitReader* const br, int bits,
const char label[]) {
const int value = VP8GetValue(br, bits, label);
return VP8Get(br, label) ? -value : value;
}
//------------------------------------------------------------------------------
@@ -227,3 +228,78 @@ uint32_t VP8LReadBits(VP8LBitReader* const br, int n_bits) {
}
//------------------------------------------------------------------------------
// Bit-tracing tool
#if (BITTRACE > 0)
#include <stdlib.h> // for atexit()
#include <stdio.h>
#include <string.h>
#define MAX_NUM_LABELS 32
static struct {
const char* label;
int size;
int count;
} kLabels[MAX_NUM_LABELS];
static int last_label = 0;
static int last_pos = 0;
static const uint8_t* buf_start = NULL;
static int init_done = 0;
static void PrintBitTraces(void) {
int i;
int scale = 1;
int total = 0;
const char* units = "bits";
#if (BITTRACE == 2)
scale = 8;
units = "bytes";
#endif
for (i = 0; i < last_label; ++i) total += kLabels[i].size;
if (total < 1) total = 1; // avoid rounding errors
printf("=== Bit traces ===\n");
for (i = 0; i < last_label; ++i) {
const int skip = 16 - (int)strlen(kLabels[i].label);
const int value = (kLabels[i].size + scale - 1) / scale;
assert(skip > 0);
printf("%s \%*s: %6d %s \t[%5.2f%%] [count: %7d]\n",
kLabels[i].label, skip, "", value, units,
100.f * kLabels[i].size / total,
kLabels[i].count);
}
total = (total + scale - 1) / scale;
printf("Total: %d %s\n", total, units);
}
void BitTrace(const struct VP8BitReader* const br, const char label[]) {
int i, pos;
if (!init_done) {
memset(kLabels, 0, sizeof(kLabels));
atexit(PrintBitTraces);
buf_start = br->buf_;
init_done = 1;
}
pos = (int)(br->buf_ - buf_start) * 8 - br->bits_;
// if there's a too large jump, we've changed partition -> reset counter
if (abs(pos - last_pos) > 32) {
buf_start = br->buf_;
pos = 0;
last_pos = 0;
}
if (br->range_ >= 0x7f) pos += kVP8Log2Range[br->range_ - 0x7f];
for (i = 0; i < last_label; ++i) {
if (!strcmp(label, kLabels[i].label)) break;
}
if (i == MAX_NUM_LABELS) abort(); // overflow!
kLabels[i].label = label;
kLabels[i].size += pos - last_pos;
kLabels[i].count += 1;
if (i == last_label) ++last_label;
last_pos = pos;
}
#endif // BITTRACE > 0
//------------------------------------------------------------------------------