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faster inflate() autodetection of zlib/zstd

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This commit is contained in:
inikep
2016-09-23 14:59:46 +02:00
parent b88accfb5f
commit 57b9708054
3 changed files with 172 additions and 78 deletions
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zlibWrapper/zstd_zlibwrapper.c
+92 -67
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@@ -548,6 +548,7 @@ ZEXTERN int ZEXPORT z_inflateSetDictionary OF((z_streamp strm,
if (zwd == NULL || zwd->zbd == NULL) return Z_STREAM_ERROR;
errorCode = ZSTD_initDStream_usingDict(zwd->zbd, dictionary, dictLength);
if (ZSTD_isError(errorCode)) return ZWRAPD_finishWithError(zwd, strm, 0);
zwd->decompState = Z_NEED_DICT;
if (strm->total_in == ZSTD_HEADERSIZE) {
zwd->inBuffer.src = zwd->headerBuf;
@@ -571,6 +572,7 @@ ZEXTERN int ZEXPORT z_inflateSetDictionary OF((z_streamp strm,
ZEXTERN int ZEXPORT z_inflate OF((z_streamp strm, int flush))
{
ZWRAP_DCtx* zwd;
int res;
if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) {
LOG_WRAPPERD("- inflate1 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d\n", (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out);
@@ -581,60 +583,79 @@ ZEXTERN int ZEXPORT z_inflate OF((z_streamp strm, int flush))
if (strm->avail_in > 0) {
size_t errorCode, srcSize;
ZWRAP_DCtx* zwd = (ZWRAP_DCtx*) strm->state;
if (zwd == NULL) return Z_STREAM_ERROR;
zwd = (ZWRAP_DCtx*) strm->state;
LOG_WRAPPERD("- inflate1 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d\n", (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out);
if (zwd == NULL) return Z_STREAM_ERROR;
if (zwd->decompState == Z_STREAM_END) return Z_STREAM_END;
if (strm->total_in < ZLIB_HEADERSIZE)
{
srcSize = MIN(strm->avail_in, ZLIB_HEADERSIZE - strm->total_in);
memcpy(zwd->headerBuf+strm->total_in, strm->next_in, srcSize);
strm->total_in += srcSize;
strm->next_in += srcSize;
strm->avail_in -= srcSize;
if (strm->total_in < ZLIB_HEADERSIZE) return Z_OK;
if (strm->total_in < ZLIB_HEADERSIZE) {
if (strm->total_in == 0 && strm->avail_in >= ZLIB_HEADERSIZE) {
if (MEM_readLE32(strm->next_in) != ZSTD_MAGICNUMBER) {
if (zwd->windowBits)
errorCode = inflateInit2_(strm, zwd->windowBits, zwd->version, zwd->stream_size);
else
errorCode = inflateInit_(strm, zwd->version, zwd->stream_size);
if (MEM_readLE32(zwd->headerBuf) != ZSTD_MAGICNUMBER) {
z_stream strm2;
strm2.next_in = strm->next_in;
strm2.avail_in = strm->avail_in;
strm2.next_out = strm->next_out;
strm2.avail_out = strm->avail_out;
strm->reserved = 0; /* mark as zlib stream */
errorCode = ZWRAP_freeDCtx(zwd);
if (ZSTD_isError(errorCode)) goto error;
if (zwd->windowBits)
errorCode = inflateInit2_(strm, zwd->windowBits, zwd->version, zwd->stream_size);
else
errorCode = inflateInit_(strm, zwd->version, zwd->stream_size);
LOG_WRAPPERD("ZLIB inflateInit errorCode=%d\n", (int)errorCode);
if (errorCode != Z_OK) return ZWRAPD_finishWithError(zwd, strm, (int)errorCode);
if (flush == Z_INFLATE_SYNC) res = inflateSync(strm);
else res = inflate(strm, flush);
LOG_WRAPPERD("- inflate3 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d res=%d\n", (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out, res);
return res;
}
} else {
srcSize = MIN(strm->avail_in, ZLIB_HEADERSIZE - strm->total_in);
memcpy(zwd->headerBuf+strm->total_in, strm->next_in, srcSize);
strm->total_in += srcSize;
strm->next_in += srcSize;
strm->avail_in -= srcSize;
if (strm->total_in < ZLIB_HEADERSIZE) return Z_OK;
/* inflate header */
strm->next_in = (unsigned char*)zwd->headerBuf;
strm->avail_in = ZLIB_HEADERSIZE;
strm->avail_out = 0;
errorCode = inflate(strm, Z_NO_FLUSH);
LOG_WRAPPERD("ZLIB inflate errorCode=%d strm->avail_in=%d\n", (int)errorCode, (int)strm->avail_in);
if (errorCode != Z_OK) return ZWRAPD_finishWithError(zwd, strm, (int)errorCode);
if (strm->avail_in > 0) goto error;
if (MEM_readLE32(zwd->headerBuf) != ZSTD_MAGICNUMBER) {
z_stream strm2;
strm2.next_in = strm->next_in;
strm2.avail_in = strm->avail_in;
strm2.next_out = strm->next_out;
strm2.avail_out = strm->avail_out;
strm->next_in = strm2.next_in;
strm->avail_in = strm2.avail_in;
strm->next_out = strm2.next_out;
strm->avail_out = strm2.avail_out;
if (zwd->windowBits)
errorCode = inflateInit2_(strm, zwd->windowBits, zwd->version, zwd->stream_size);
else
errorCode = inflateInit_(strm, zwd->version, zwd->stream_size);
LOG_WRAPPERD("ZLIB inflateInit errorCode=%d\n", (int)errorCode);
if (errorCode != Z_OK) return ZWRAPD_finishWithError(zwd, strm, (int)errorCode);
strm->reserved = 0; /* mark as zlib stream */
errorCode = ZWRAP_freeDCtx(zwd);
if (ZSTD_isError(errorCode)) goto error;
/* inflate header */
strm->next_in = (unsigned char*)zwd->headerBuf;
strm->avail_in = ZLIB_HEADERSIZE;
strm->avail_out = 0;
errorCode = inflate(strm, Z_NO_FLUSH);
LOG_WRAPPERD("ZLIB inflate errorCode=%d strm->avail_in=%d\n", (int)errorCode, (int)strm->avail_in);
if (errorCode != Z_OK) return ZWRAPD_finishWithError(zwd, strm, (int)errorCode);
if (strm->avail_in > 0) goto error;
if (flush == Z_INFLATE_SYNC) res = inflateSync(strm);
else res = inflate(strm, flush);
LOG_WRAPPERD("- inflate2 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d res=%d\n", (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out, res);
return res;
strm->next_in = strm2.next_in;
strm->avail_in = strm2.avail_in;
strm->next_out = strm2.next_out;
strm->avail_out = strm2.avail_out;
strm->reserved = 0; /* mark as zlib stream */
errorCode = ZWRAP_freeDCtx(zwd);
if (ZSTD_isError(errorCode)) goto error;
if (flush == Z_INFLATE_SYNC) res = inflateSync(strm);
else res = inflate(strm, flush);
LOG_WRAPPERD("- inflate2 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d res=%d\n", (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out, res);
return res;
}
}
}
if (flush == Z_INFLATE_SYNC) { strm->msg = "inflateSync is not supported!"; goto error; }
if (!zwd->zbd) {
zwd->zbd = ZSTD_createDStream_advanced(zwd->customMem);
if (zwd->zbd == NULL) { LOG_WRAPPERD("ERROR: ZSTD_createDStream_advanced\n"); goto error; }
@@ -642,31 +663,36 @@ ZEXTERN int ZEXPORT z_inflate OF((z_streamp strm, int flush))
if (strm->total_in < ZSTD_HEADERSIZE)
{
srcSize = MIN(strm->avail_in, ZSTD_HEADERSIZE - strm->total_in);
memcpy(zwd->headerBuf+strm->total_in, strm->next_in, srcSize);
strm->total_in += srcSize;
strm->next_in += srcSize;
strm->avail_in -= srcSize;
if (strm->total_in < ZSTD_HEADERSIZE) return Z_OK;
if (strm->total_in == 0 && strm->avail_in >= ZSTD_HEADERSIZE) {
if (zwd->decompState != Z_NEED_DICT) {
errorCode = ZSTD_initDStream(zwd->zbd);
if (ZSTD_isError(errorCode)) { LOG_WRAPPERD("ERROR: ZSTD_initDStream errorCode=%s\n", ZSTD_getErrorName(errorCode)); goto error; }
}
} else {
srcSize = MIN(strm->avail_in, ZSTD_HEADERSIZE - strm->total_in);
memcpy(zwd->headerBuf+strm->total_in, strm->next_in, srcSize);
strm->total_in += srcSize;
strm->next_in += srcSize;
strm->avail_in -= srcSize;
if (strm->total_in < ZSTD_HEADERSIZE) return Z_OK;
errorCode = ZSTD_initDStream(zwd->zbd);
if (ZSTD_isError(errorCode)) { LOG_WRAPPERD("ERROR: ZSTD_initDStream errorCode=%s\n", ZSTD_getErrorName(errorCode)); goto error; }
errorCode = ZSTD_initDStream(zwd->zbd);
if (ZSTD_isError(errorCode)) { LOG_WRAPPERD("ERROR: ZSTD_initDStream errorCode=%s\n", ZSTD_getErrorName(errorCode)); goto error; }
if (flush == Z_INFLATE_SYNC) { strm->msg = "inflateSync is not supported!"; goto error; }
zwd->inBuffer.src = zwd->headerBuf;
zwd->inBuffer.size = ZSTD_HEADERSIZE;
zwd->inBuffer.pos = 0;
zwd->outBuffer.dst = strm->next_out;
zwd->outBuffer.size = 0;
zwd->outBuffer.pos = 0;
errorCode = ZSTD_decompressStream(zwd->zbd, &zwd->outBuffer, &zwd->inBuffer);
LOG_WRAPPERD("inflate ZSTD_decompressStream1 errorCode=%d srcSize=%d dstCapacity=%d\n", (int)errorCode, (int)zwd->inBuffer.size, (int)zwd->outBuffer.size);
if (ZSTD_isError(errorCode)) {
LOG_WRAPPERD("ERROR: ZSTD_decompressStream1 %s\n", ZSTD_getErrorName(errorCode));
goto error;
zwd->inBuffer.src = zwd->headerBuf;
zwd->inBuffer.size = ZSTD_HEADERSIZE;
zwd->inBuffer.pos = 0;
zwd->outBuffer.dst = strm->next_out;
zwd->outBuffer.size = 0;
zwd->outBuffer.pos = 0;
errorCode = ZSTD_decompressStream(zwd->zbd, &zwd->outBuffer, &zwd->inBuffer);
LOG_WRAPPERD("inflate ZSTD_decompressStream1 errorCode=%d srcSize=%d dstCapacity=%d\n", (int)errorCode, (int)zwd->inBuffer.size, (int)zwd->outBuffer.size);
if (ZSTD_isError(errorCode)) {
LOG_WRAPPERD("ERROR: ZSTD_decompressStream1 %s\n", ZSTD_getErrorName(errorCode));
goto error;
}
if (zwd->inBuffer.pos != zwd->inBuffer.size) return ZWRAPD_finishWithError(zwd, strm, 0); /* not consumed */
}
if (zwd->inBuffer.pos != zwd->inBuffer.size) return ZWRAPD_finishWithError(zwd, strm, 0); /* not consumed */
}
zwd->inBuffer.src = strm->next_in;
@@ -694,13 +720,12 @@ ZEXTERN int ZEXPORT z_inflate OF((z_streamp strm, int flush))
zwd->decompState = Z_STREAM_END;
return Z_STREAM_END;
}
goto finish;
error:
return ZWRAPD_finishWithError(zwd, strm, 0);
}
finish:
LOG_WRAPPERD("- inflate2 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d res=%d\n", (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out, Z_OK);
return Z_OK;
error:
return ZWRAPD_finishWithError(zwd, strm, 0);
}