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https://github.com/dolphin-emu/dolphin.git
synced 2025-07-24 14:49:42 -06:00
update zlib to v1.2.8
This commit is contained in:
Tetsuo55
136
Externals/zlib/inflate.c
vendored
136
Externals/zlib/inflate.c
vendored
@ -1,5 +1,5 @@
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/* inflate.c -- zlib decompression
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* Copyright (C) 1995-2010 Mark Adler
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* Copyright (C) 1995-2012 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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@ -93,14 +93,15 @@
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/* function prototypes */
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local void fixedtables OF((struct inflate_state FAR *state));
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local int updatewindow OF((z_streamp strm, unsigned out));
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local int updatewindow OF((z_streamp strm, const unsigned char FAR *end,
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unsigned copy));
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#ifdef BUILDFIXED
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void makefixed OF((void));
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#endif
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local unsigned syncsearch OF((unsigned FAR *have, unsigned char FAR *buf,
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local unsigned syncsearch OF((unsigned FAR *have, const unsigned char FAR *buf,
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unsigned len));
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int ZEXPORT inflateReset(strm)
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int ZEXPORT inflateResetKeep(strm)
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z_streamp strm;
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{
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struct inflate_state FAR *state;
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@ -109,15 +110,13 @@ z_streamp strm;
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state = (struct inflate_state FAR *)strm->state;
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strm->total_in = strm->total_out = state->total = 0;
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strm->msg = Z_NULL;
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strm->adler = 1; /* to support ill-conceived Java test suite */
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if (state->wrap) /* to support ill-conceived Java test suite */
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strm->adler = state->wrap & 1;
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state->mode = HEAD;
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state->last = 0;
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state->havedict = 0;
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state->dmax = 32768U;
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state->head = Z_NULL;
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state->wsize = 0;
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state->whave = 0;
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state->wnext = 0;
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state->hold = 0;
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state->bits = 0;
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state->lencode = state->distcode = state->next = state->codes;
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@ -127,6 +126,19 @@ z_streamp strm;
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return Z_OK;
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}
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int ZEXPORT inflateReset(strm)
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z_streamp strm;
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{
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struct inflate_state FAR *state;
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if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
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state = (struct inflate_state FAR *)strm->state;
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state->wsize = 0;
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state->whave = 0;
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state->wnext = 0;
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return inflateResetKeep(strm);
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}
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int ZEXPORT inflateReset2(strm, windowBits)
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z_streamp strm;
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int windowBits;
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@ -180,10 +192,19 @@ int stream_size;
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if (strm == Z_NULL) return Z_STREAM_ERROR;
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strm->msg = Z_NULL; /* in case we return an error */
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if (strm->zalloc == (alloc_func)0) {
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#ifdef Z_SOLO
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return Z_STREAM_ERROR;
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#else
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strm->zalloc = zcalloc;
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strm->opaque = (voidpf)0;
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#endif
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}
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if (strm->zfree == (free_func)0) strm->zfree = zcfree;
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if (strm->zfree == (free_func)0)
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#ifdef Z_SOLO
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return Z_STREAM_ERROR;
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#else
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strm->zfree = zcfree;
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#endif
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state = (struct inflate_state FAR *)
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ZALLOC(strm, 1, sizeof(struct inflate_state));
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if (state == Z_NULL) return Z_MEM_ERROR;
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@ -321,8 +342,8 @@ void makefixed()
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low = 0;
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for (;;) {
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if ((low % 7) == 0) printf("\n ");
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printf("{%u,%u,%d}", state.lencode[low].op, state.lencode[low].bits,
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state.lencode[low].val);
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printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op,
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state.lencode[low].bits, state.lencode[low].val);
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if (++low == size) break;
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putchar(',');
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}
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@ -355,12 +376,13 @@ void makefixed()
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output will fall in the output data, making match copies simpler and faster.
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The advantage may be dependent on the size of the processor's data caches.
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*/
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local int updatewindow(strm, out)
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local int updatewindow(strm, end, copy)
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z_streamp strm;
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unsigned out;
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const Bytef *end;
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unsigned copy;
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{
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struct inflate_state FAR *state;
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unsigned copy, dist;
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unsigned dist;
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state = (struct inflate_state FAR *)strm->state;
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@ -380,19 +402,18 @@ unsigned out;
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}
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/* copy state->wsize or less output bytes into the circular window */
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copy = out - strm->avail_out;
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if (copy >= state->wsize) {
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zmemcpy(state->window, strm->next_out - state->wsize, state->wsize);
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zmemcpy(state->window, end - state->wsize, state->wsize);
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state->wnext = 0;
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state->whave = state->wsize;
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}
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else {
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dist = state->wsize - state->wnext;
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if (dist > copy) dist = copy;
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zmemcpy(state->window + state->wnext, strm->next_out - copy, dist);
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zmemcpy(state->window + state->wnext, end - copy, dist);
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copy -= dist;
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if (copy) {
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zmemcpy(state->window, strm->next_out - copy, copy);
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zmemcpy(state->window, end - copy, copy);
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state->wnext = copy;
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state->whave = state->wsize;
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}
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@ -499,11 +520,6 @@ unsigned out;
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bits -= bits & 7; \
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} while (0)
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/* Reverse the bytes in a 32-bit value */
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#define REVERSE(q) \
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((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
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(((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
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/*
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inflate() uses a state machine to process as much input data and generate as
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much output data as possible before returning. The state machine is
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@ -591,7 +607,7 @@ z_streamp strm;
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int flush;
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{
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struct inflate_state FAR *state;
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unsigned char FAR *next; /* next input */
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z_const unsigned char FAR *next; /* next input */
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unsigned char FAR *put; /* next output */
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unsigned have, left; /* available input and output */
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unsigned long hold; /* bit buffer */
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@ -797,7 +813,7 @@ int flush;
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#endif
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case DICTID:
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NEEDBITS(32);
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strm->adler = state->check = REVERSE(hold);
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strm->adler = state->check = ZSWAP32(hold);
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INITBITS();
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state->mode = DICT;
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case DICT:
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@ -905,7 +921,7 @@ int flush;
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while (state->have < 19)
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state->lens[order[state->have++]] = 0;
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state->next = state->codes;
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state->lencode = (code const FAR *)(state->next);
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state->lencode = (const code FAR *)(state->next);
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state->lenbits = 7;
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ret = inflate_table(CODES, state->lens, 19, &(state->next),
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&(state->lenbits), state->work);
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@ -925,7 +941,6 @@ int flush;
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PULLBYTE();
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}
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if (here.val < 16) {
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NEEDBITS(here.bits);
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DROPBITS(here.bits);
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state->lens[state->have++] = here.val;
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}
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@ -980,7 +995,7 @@ int flush;
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values here (9 and 6) without reading the comments in inftrees.h
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concerning the ENOUGH constants, which depend on those values */
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state->next = state->codes;
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state->lencode = (code const FAR *)(state->next);
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state->lencode = (const code FAR *)(state->next);
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state->lenbits = 9;
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ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
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&(state->lenbits), state->work);
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@ -989,7 +1004,7 @@ int flush;
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state->mode = BAD;
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break;
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}
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state->distcode = (code const FAR *)(state->next);
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state->distcode = (const code FAR *)(state->next);
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state->distbits = 6;
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ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
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&(state->next), &(state->distbits), state->work);
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@ -1170,7 +1185,7 @@ int flush;
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#ifdef GUNZIP
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state->flags ? hold :
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#endif
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REVERSE(hold)) != state->check) {
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ZSWAP32(hold)) != state->check) {
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strm->msg = (char *)"incorrect data check";
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state->mode = BAD;
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break;
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@ -1214,8 +1229,9 @@ int flush;
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*/
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inf_leave:
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RESTORE();
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if (state->wsize || (state->mode < CHECK && out != strm->avail_out))
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if (updatewindow(strm, out)) {
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if (state->wsize || (out != strm->avail_out && state->mode < BAD &&
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(state->mode < CHECK || flush != Z_FINISH)))
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if (updatewindow(strm, strm->next_out, out - strm->avail_out)) {
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state->mode = MEM;
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return Z_MEM_ERROR;
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}
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@ -1249,13 +1265,37 @@ z_streamp strm;
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return Z_OK;
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}
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int ZEXPORT inflateGetDictionary(strm, dictionary, dictLength)
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z_streamp strm;
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Bytef *dictionary;
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uInt *dictLength;
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{
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struct inflate_state FAR *state;
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/* check state */
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if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
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state = (struct inflate_state FAR *)strm->state;
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/* copy dictionary */
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if (state->whave && dictionary != Z_NULL) {
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zmemcpy(dictionary, state->window + state->wnext,
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state->whave - state->wnext);
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zmemcpy(dictionary + state->whave - state->wnext,
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state->window, state->wnext);
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}
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if (dictLength != Z_NULL)
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*dictLength = state->whave;
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return Z_OK;
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}
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int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)
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z_streamp strm;
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const Bytef *dictionary;
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uInt dictLength;
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{
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struct inflate_state FAR *state;
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unsigned long id;
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unsigned long dictid;
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int ret;
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/* check state */
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if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
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@ -1263,29 +1303,21 @@ uInt dictLength;
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if (state->wrap != 0 && state->mode != DICT)
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return Z_STREAM_ERROR;
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/* check for correct dictionary id */
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/* check for correct dictionary identifier */
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if (state->mode == DICT) {
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id = adler32(0L, Z_NULL, 0);
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id = adler32(id, dictionary, dictLength);
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if (id != state->check)
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dictid = adler32(0L, Z_NULL, 0);
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dictid = adler32(dictid, dictionary, dictLength);
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if (dictid != state->check)
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return Z_DATA_ERROR;
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}
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/* copy dictionary to window */
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if (updatewindow(strm, strm->avail_out)) {
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/* copy dictionary to window using updatewindow(), which will amend the
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existing dictionary if appropriate */
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ret = updatewindow(strm, dictionary + dictLength, dictLength);
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if (ret) {
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state->mode = MEM;
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return Z_MEM_ERROR;
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}
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if (dictLength > state->wsize) {
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zmemcpy(state->window, dictionary + dictLength - state->wsize,
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state->wsize);
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state->whave = state->wsize;
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}
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else {
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zmemcpy(state->window + state->wsize - dictLength, dictionary,
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dictLength);
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state->whave = dictLength;
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}
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state->havedict = 1;
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Tracev((stderr, "inflate: dictionary set\n"));
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return Z_OK;
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@ -1321,7 +1353,7 @@ gz_headerp head;
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*/
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local unsigned syncsearch(have, buf, len)
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unsigned FAR *have;
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unsigned char FAR *buf;
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const unsigned char FAR *buf;
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unsigned len;
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{
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unsigned got;
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@ -1433,8 +1465,8 @@ z_streamp source;
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}
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/* copy state */
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zmemcpy(dest, source, sizeof(z_stream));
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zmemcpy(copy, state, sizeof(struct inflate_state));
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zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
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zmemcpy((voidpf)copy, (voidpf)state, sizeof(struct inflate_state));
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if (state->lencode >= state->codes &&
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state->lencode <= state->codes + ENOUGH - 1) {
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copy->lencode = copy->codes + (state->lencode - state->codes);
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