ShuriZma
/
dolphin
mirror of https://github.com/dolphin-emu/dolphin.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
dolphin/Externals/minizip/mz_strm_bzip.c

375 lines
9.8 KiB
C
Raw Blame History

/* mz_strm_bzip.c -- Stream for bzip inflate/deflate
part of the minizip-ng project
Copyright (C) 2010-2021 Nathan Moinvaziri
https://github.com/zlib-ng/minizip-ng
This program is distributed under the terms of the same license as zlib.
See the accompanying LICENSE file for the full text of the license.
*/
#include "mz.h"
#include "mz_strm.h"
#include "mz_strm_bzip.h"
#include "bzlib.h"
/***************************************************************************/
static mz_stream_vtbl mz_stream_bzip_vtbl = {
mz_stream_bzip_open,
mz_stream_bzip_is_open,
mz_stream_bzip_read,
mz_stream_bzip_write,
mz_stream_bzip_tell,
mz_stream_bzip_seek,
mz_stream_bzip_close,
mz_stream_bzip_error,
mz_stream_bzip_create,
mz_stream_bzip_delete,
mz_stream_bzip_get_prop_int64,
mz_stream_bzip_set_prop_int64
};
/***************************************************************************/
typedef struct mz_stream_bzip_s {
mz_stream stream;
bz_stream bzstream;
int32_t mode;
int32_t error;
uint8_t buffer[INT16_MAX];
int32_t buffer_len;
int16_t stream_end;
int64_t total_in;
int64_t total_out;
int64_t max_total_in;
int8_t initialized;
int16_t level;
} mz_stream_bzip;
/***************************************************************************/
int32_t mz_stream_bzip_open(void *stream, const char *path, int32_t mode) {
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
MZ_UNUSED(path);
bzip->bzstream.bzalloc = 0;
bzip->bzstream.bzfree = 0;
bzip->bzstream.opaque = 0;
bzip->bzstream.total_in_lo32 = 0;
bzip->bzstream.total_in_hi32 = 0;
bzip->bzstream.total_out_lo32 = 0;
bzip->bzstream.total_out_hi32 = 0;
bzip->total_in = 0;
bzip->total_out = 0;
if (mode & MZ_OPEN_MODE_WRITE) {
#ifdef MZ_ZIP_NO_COMPRESSION
return MZ_SUPPORT_ERROR;
#else
bzip->bzstream.next_out = (char *)bzip->buffer;
bzip->bzstream.avail_out = sizeof(bzip->buffer);
bzip->error = BZ2_bzCompressInit(&bzip->bzstream, bzip->level, 0, 0);
#endif
} else if (mode & MZ_OPEN_MODE_READ) {
#ifdef MZ_ZIP_NO_DECOMPRESSION
return MZ_SUPPORT_ERROR;
#else
bzip->bzstream.next_in = (char *)bzip->buffer;
bzip->bzstream.avail_in = 0;
bzip->error = BZ2_bzDecompressInit(&bzip->bzstream, 0, 0);
#endif
}
if (bzip->error != BZ_OK)
return MZ_OPEN_ERROR;
bzip->initialized = 1;
bzip->stream_end = 0;
bzip->mode = mode;
return MZ_OK;
}
int32_t mz_stream_bzip_is_open(void *stream) {
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
if (bzip->initialized != 1)
return MZ_OPEN_ERROR;
return MZ_OK;
}
int32_t mz_stream_bzip_read(void *stream, void *buf, int32_t size) {
#ifdef MZ_ZIP_NO_DECOMPRESSION
MZ_UNUSED(stream);
MZ_UNUSED(buf);
MZ_UNUSED(size);
return MZ_SUPPORT_ERROR;
#else
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
uint64_t total_in_before = 0;
uint64_t total_out_before = 0;
uint64_t total_in_after = 0;
uint64_t total_out_after = 0;
int32_t total_in = 0;
int32_t total_out = 0;
int32_t in_bytes = 0;
int32_t out_bytes = 0;
int32_t bytes_to_read = sizeof(bzip->buffer);
int32_t read = 0;
int32_t err = BZ_OK;
if (bzip->stream_end)
return 0;
bzip->bzstream.next_out = (char *)buf;
bzip->bzstream.avail_out = (unsigned int)size;
do {
if (bzip->bzstream.avail_in == 0) {
if (bzip->max_total_in > 0) {
if ((int64_t)bytes_to_read > (bzip->max_total_in - bzip->total_in))
bytes_to_read = (int32_t)(bzip->max_total_in - bzip->total_in);
}
read = mz_stream_read(bzip->stream.base, bzip->buffer, bytes_to_read);
if (read < 0)
return read;
bzip->bzstream.next_in = (char *)bzip->buffer;
bzip->bzstream.avail_in = (uint32_t)read;
}
total_in_before = bzip->bzstream.avail_in;
total_out_before = bzip->bzstream.total_out_lo32 +
(((uint64_t)bzip->bzstream.total_out_hi32) << 32);
err = BZ2_bzDecompress(&bzip->bzstream);
total_in_after = bzip->bzstream.avail_in;
total_out_after = bzip->bzstream.total_out_lo32 +
(((uint64_t)bzip->bzstream.total_out_hi32) << 32);
in_bytes = (int32_t)(total_in_before - total_in_after);
out_bytes = (int32_t)(total_out_after - total_out_before);
total_in += in_bytes;
total_out += out_bytes;
bzip->total_in += in_bytes;
bzip->total_out += out_bytes;
if (err == BZ_STREAM_END) {
bzip->stream_end = 1;
break;
}
if (err != BZ_OK && err != BZ_RUN_OK) {
bzip->error = err;
break;
}
} while (bzip->bzstream.avail_out > 0);
if (bzip->error != 0)
return MZ_DATA_ERROR;
return total_out;
#endif
}
#ifndef MZ_ZIP_NO_COMPRESSION
static int32_t mz_stream_bzip_flush(void *stream) {
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
if (mz_stream_write(bzip->stream.base, bzip->buffer, bzip->buffer_len) != bzip->buffer_len)
return MZ_WRITE_ERROR;
return MZ_OK;
}
static int32_t mz_stream_bzip_compress(void *stream, int flush) {
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
uint64_t total_out_before = 0;
uint64_t total_out_after = 0;
uint32_t out_bytes = 0;
int32_t err = BZ_OK;
do {
if (bzip->bzstream.avail_out == 0) {
err = mz_stream_bzip_flush(bzip);
if (err != MZ_OK)
return err;
bzip->bzstream.avail_out = sizeof(bzip->buffer);
bzip->bzstream.next_out = (char *)bzip->buffer;
bzip->buffer_len = 0;
}
total_out_before = bzip->bzstream.total_out_lo32 +
(((uint64_t)bzip->bzstream.total_out_hi32) << 32);
err = BZ2_bzCompress(&bzip->bzstream, flush);
total_out_after = bzip->bzstream.total_out_lo32 +
(((uint64_t)bzip->bzstream.total_out_hi32) << 32);
out_bytes = (uint32_t)(total_out_after - total_out_before);
bzip->buffer_len += out_bytes;
bzip->total_out += out_bytes;
if (err == BZ_STREAM_END)
break;
if (err < 0) {
bzip->error = err;
return MZ_DATA_ERROR;
}
} while ((bzip->bzstream.avail_in > 0) || (flush == BZ_FINISH && err == BZ_FINISH_OK));
return MZ_OK;
}
#endif
int32_t mz_stream_bzip_write(void *stream, const void *buf, int32_t size) {
#ifdef MZ_ZIP_NO_COMPRESSION
MZ_UNUSED(stream);
MZ_UNUSED(buf);
MZ_UNUSED(size);
return MZ_SUPPORT_ERROR;
#else
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
int32_t err = MZ_OK;
bzip->bzstream.next_in = (char *)(intptr_t)buf;
bzip->bzstream.avail_in = (unsigned int)size;
err = mz_stream_bzip_compress(stream, BZ_RUN);
if (err != MZ_OK) {
return err;
}
bzip->total_in += size;
return size;
#endif
}
int64_t mz_stream_bzip_tell(void *stream) {
MZ_UNUSED(stream);
return MZ_TELL_ERROR;
}
int32_t mz_stream_bzip_seek(void *stream, int64_t offset, int32_t origin) {
MZ_UNUSED(stream);
MZ_UNUSED(offset);
MZ_UNUSED(origin);
return MZ_SEEK_ERROR;
}
int32_t mz_stream_bzip_close(void *stream) {
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
if (bzip->mode & MZ_OPEN_MODE_WRITE) {
#ifdef MZ_ZIP_NO_COMPRESSION
return MZ_SUPPORT_ERROR;
#else
mz_stream_bzip_compress(stream, BZ_FINISH);
mz_stream_bzip_flush(stream);
BZ2_bzCompressEnd(&bzip->bzstream);
#endif
} else if (bzip->mode & MZ_OPEN_MODE_READ) {
#ifdef MZ_ZIP_NO_DECOMPRESSION
return MZ_SUPPORT_ERROR;
#else
BZ2_bzDecompressEnd(&bzip->bzstream);
#endif
}
bzip->initialized = 0;
if (bzip->error != BZ_OK)
return MZ_CLOSE_ERROR;
return MZ_OK;
}
int32_t mz_stream_bzip_error(void *stream) {
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
return bzip->error;
}
int32_t mz_stream_bzip_get_prop_int64(void *stream, int32_t prop, int64_t *value) {
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
switch (prop) {
case MZ_STREAM_PROP_TOTAL_IN:
*value = bzip->total_in;
break;
case MZ_STREAM_PROP_TOTAL_IN_MAX:
*value = bzip->max_total_in;
break;
case MZ_STREAM_PROP_TOTAL_OUT:
*value = bzip->total_out;
break;
case MZ_STREAM_PROP_HEADER_SIZE:
*value = 0;
break;
default:
return MZ_EXIST_ERROR;
}
return MZ_OK;
}
int32_t mz_stream_bzip_set_prop_int64(void *stream, int32_t prop, int64_t value) {
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
switch (prop) {
case MZ_STREAM_PROP_COMPRESS_LEVEL:
if (value < 0)
bzip->level = 6;
else
bzip->level = (int16_t)value;
return MZ_OK;
case MZ_STREAM_PROP_TOTAL_IN_MAX:
bzip->max_total_in = value;
return MZ_OK;
}
return MZ_EXIST_ERROR;
}
void *mz_stream_bzip_create(void **stream) {
mz_stream_bzip *bzip = NULL;
bzip = (mz_stream_bzip *)MZ_ALLOC(sizeof(mz_stream_bzip));
if (bzip != NULL) {
memset(bzip, 0, sizeof(mz_stream_bzip));
bzip->stream.vtbl = &mz_stream_bzip_vtbl;
bzip->level = 6;
}
if (stream != NULL)
*stream = bzip;
return bzip;
}
void mz_stream_bzip_delete(void **stream) {
mz_stream_bzip *bzip = NULL;
if (stream == NULL)
return;
bzip = (mz_stream_bzip *)*stream;
if (bzip != NULL)
MZ_FREE(bzip);
*stream = NULL;
}
void *mz_stream_bzip_get_interface(void) {
return (void *)&mz_stream_bzip_vtbl;
}
extern void bz_internal_error(int errcode) {
MZ_UNUSED(errcode);
}
Reference in New Issue View Git Blame Copy Permalink