mirror of
https://github.com/WinampDesktop/winamp.git
synced 2025-06-17 00:45:47 -04:00
dep: Bump libchdr to 54bfb87
This commit is contained in:
Stenzek
@ -227,6 +227,12 @@ struct _lzma_codec_data
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lzma_allocator allocator;
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};
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typedef struct _huff_codec_data huff_codec_data;
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struct _huff_codec_data
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{
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struct huffman_decoder* decoder;
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};
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/* codec-private data for the CDZL codec */
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typedef struct _cdzl_codec_data cdzl_codec_data;
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struct _cdzl_codec_data {
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@ -249,6 +255,14 @@ struct _cdlz_codec_data {
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uint8_t* buffer;
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};
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/* codec-private data for the FLAC codec */
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typedef struct _flac_codec_data flac_codec_data;
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struct _flac_codec_data {
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/* internal state */
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int native_endian;
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flac_decoder decoder;
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};
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/* codec-private data for the CDFL codec */
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typedef struct _cdfl_codec_data cdfl_codec_data;
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struct _cdfl_codec_data {
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@ -267,7 +281,6 @@ struct _chd_file
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UINT32 cookie; /* cookie, should equal COOKIE_VALUE */
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core_file * file; /* handle to the open core file */
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UINT8 owns_file; /* flag indicating if this file should be closed on chd_close() */
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chd_header header; /* header, extracted from file */
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chd_file * parent; /* pointer to parent file, or NULL */
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@ -286,6 +299,9 @@ struct _chd_file
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const codec_interface * codecintf[4]; /* interface to the codec */
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zlib_codec_data zlib_codec_data; /* zlib codec data */
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lzma_codec_data lzma_codec_data; /* lzma codec data */
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huff_codec_data huff_codec_data; /* huff codec data */
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flac_codec_data flac_codec_data; /* flac codec data */
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cdzl_codec_data cdzl_codec_data; /* cdzl codec data */
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cdlz_codec_data cdlz_codec_data; /* cdlz codec data */
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cdfl_codec_data cdfl_codec_data; /* cdfl codec data */
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@ -309,6 +325,14 @@ static const UINT8 nullsha1[CHD_SHA1_BYTES] = { 0 };
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PROTOTYPES
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***************************************************************************/
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/* core_file wrappers over stdio */
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static core_file *core_stdio_fopen(char const *path);
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static UINT64 core_stdio_fsize(core_file *file);
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static size_t core_stdio_fread(void *ptr, size_t size, size_t nmemb, core_file *file);
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static int core_stdio_fclose(core_file *file);
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static int core_stdio_fclose_nonowner(core_file *file); // alternate fclose used by chd_open_file
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static int core_stdio_fseek(core_file* file, INT64 offset, int whence);
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/* internal header operations */
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static chd_error header_validate(const chd_header *header);
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static chd_error header_read(chd_file *chd, chd_header *header);
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@ -338,6 +362,16 @@ static chd_error lzma_codec_init(void *codec, uint32_t hunkbytes);
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static void lzma_codec_free(void *codec);
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static chd_error lzma_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen);
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/* huff compression codec */
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static chd_error huff_codec_init(void *codec, uint32_t hunkbytes);
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static void huff_codec_free(void *codec);
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static chd_error huff_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen);
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/* flac compression codec */
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static chd_error flac_codec_init(void *codec, uint32_t hunkbytes);
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static void flac_codec_free(void *codec);
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static chd_error flac_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen);
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/* cdzl compression codec */
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static chd_error cdzl_codec_init(void* codec, uint32_t hunkbytes);
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static void cdzl_codec_free(void* codec);
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@ -749,24 +783,121 @@ static chd_error cdzl_codec_decompress(void *codec, const uint8_t *src, uint32_t
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return CHDERR_NONE;
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}
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/***************************************************************************
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* HUFFMAN DECOMPRESSOR
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***************************************************************************
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*/
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static chd_error huff_codec_init(void* codec, uint32_t hunkbytes)
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{
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huff_codec_data* huff_codec = (huff_codec_data*) codec;
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huff_codec->decoder = create_huffman_decoder(256, 16);
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return CHDERR_NONE;
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}
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static void huff_codec_free(void *codec)
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{
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huff_codec_data* huff_codec = (huff_codec_data*) codec;
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delete_huffman_decoder(huff_codec->decoder);
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}
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static chd_error huff_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
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{
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huff_codec_data* huff_codec = (huff_codec_data*) codec;
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struct bitstream* bitbuf = create_bitstream(src, complen);
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// first import the tree
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enum huffman_error err = huffman_import_tree_huffman(huff_codec->decoder, bitbuf);
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if (err != HUFFERR_NONE)
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{
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free(bitbuf);
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return err;
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}
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// then decode the data
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for (uint32_t cur = 0; cur < destlen; cur++)
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dest[cur] = huffman_decode_one(huff_codec->decoder, bitbuf);
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bitstream_flush(bitbuf);
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chd_error result = bitstream_overflow(bitbuf) ? CHDERR_DECOMPRESSION_ERROR : CHDERR_NONE;
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free(bitbuf);
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return result;
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}
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/***************************************************************************
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* CD FLAC DECOMPRESSOR
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***************************************************************************
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*/
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/*------------------------------------------------------
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* cdfl_codec_blocksize - return the optimal block size
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* flac_codec_blocksize - return the optimal block size
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*------------------------------------------------------
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*/
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static uint32_t cdfl_codec_blocksize(uint32_t bytes)
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static uint32_t flac_codec_blocksize(uint32_t bytes)
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{
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/* determine FLAC block size, which must be 16-65535
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* clamp to 2k since that's supposed to be the sweet spot */
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uint32_t hunkbytes = bytes / 4;
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while (hunkbytes > 2048)
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hunkbytes /= 2;
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return hunkbytes;
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uint32_t blocksize = bytes / 4;
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while (blocksize > 2048)
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blocksize /= 2;
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return blocksize;
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}
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static chd_error flac_codec_init(void *codec, uint32_t hunkbytes)
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{
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uint16_t native_endian = 0;
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flac_codec_data *flac = (flac_codec_data*)codec;
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/* make sure the CHD's hunk size is an even multiple of the sample size */
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if (hunkbytes % 4 != 0)
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return CHDERR_CODEC_ERROR;
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/* determine whether we want native or swapped samples */
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*(uint8_t *)(&native_endian) = 1;
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flac->native_endian = (native_endian & 1);
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/* flac decoder init */
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if (flac_decoder_init(&flac->decoder))
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return CHDERR_OUT_OF_MEMORY;
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return CHDERR_NONE;
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}
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static void flac_codec_free(void *codec)
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{
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flac_codec_data *flac = (flac_codec_data*)codec;
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flac_decoder_free(&flac->decoder);
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}
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static chd_error flac_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
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{
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flac_codec_data *flac = (flac_codec_data*)codec;
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int swap_endian;
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if (src[0] == 'L')
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swap_endian = !flac->native_endian;
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else if (src[0] == 'B')
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swap_endian = flac->native_endian;
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else
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return CHDERR_DECOMPRESSION_ERROR;
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if (!flac_decoder_reset(&flac->decoder, 44100, 2, flac_codec_blocksize(destlen), src + 1, complen - 1))
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return CHDERR_DECOMPRESSION_ERROR;
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if (!flac_decoder_decode_interleaved(&flac->decoder, (int16_t *)(dest), destlen/4, swap_endian))
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return CHDERR_DECOMPRESSION_ERROR;
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flac_decoder_finish(&flac->decoder);
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return CHDERR_NONE;
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}
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static uint32_t cdfl_codec_blocksize(uint32_t bytes)
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{
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// for CDs it seems that CD_MAX_SECTOR_DATA is the right target
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uint32_t blocksize = bytes / 4;
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while (blocksize > CD_MAX_SECTOR_DATA)
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blocksize /= 2;
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return blocksize;
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}
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static chd_error cdfl_codec_init(void *codec, uint32_t hunkbytes)
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@ -904,6 +1035,39 @@ static const codec_interface codec_interfaces[] =
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NULL
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},
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/* V5 lzma compression */
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{
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CHD_CODEC_LZMA,
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"lzma (LZMA)",
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FALSE,
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lzma_codec_init,
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lzma_codec_free,
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lzma_codec_decompress,
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NULL
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},
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/* V5 huffman compression */
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{
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CHD_CODEC_HUFFMAN,
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"Huffman",
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FALSE,
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huff_codec_init,
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huff_codec_free,
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huff_codec_decompress,
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NULL
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},
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/* V5 flac compression */
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{
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CHD_CODEC_FLAC,
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"flac (FLAC)",
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FALSE,
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flac_codec_init,
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flac_codec_free,
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flac_codec_decompress,
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NULL
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},
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/* V5 CD zlib compression */
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{
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CHD_CODEC_CD_ZLIB,
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@ -1185,6 +1349,8 @@ static chd_error decompress_v5_map(chd_file* chd, chd_header* header)
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if (!chd_compressed(header))
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{
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header->rawmap = (uint8_t*)malloc(rawmapsize);
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if (header->rawmap == NULL)
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return CHDERR_OUT_OF_MEMORY;
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core_fseek(chd->file, header->mapoffset, SEEK_SET);
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result = core_fread(chd->file, header->rawmap, rawmapsize);
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return CHDERR_NONE;
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@ -1202,10 +1368,18 @@ static chd_error decompress_v5_map(chd_file* chd, chd_header* header)
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/* now read the map */
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compressed_ptr = (uint8_t*)malloc(sizeof(uint8_t) * mapbytes);
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if (compressed_ptr == NULL)
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return CHDERR_OUT_OF_MEMORY;
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core_fseek(chd->file, header->mapoffset + 16, SEEK_SET);
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result = core_fread(chd->file, compressed_ptr, mapbytes);
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bitbuf = create_bitstream(compressed_ptr, sizeof(uint8_t) * mapbytes);
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header->rawmap = (uint8_t*)malloc(rawmapsize);
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if (header->rawmap == NULL)
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{
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free(compressed_ptr);
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free(bitbuf);
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return CHDERR_OUT_OF_MEMORY;
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}
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/* first decode the compression types */
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decoder = create_huffman_decoder(16, 8);
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@ -1343,7 +1517,24 @@ static inline void map_extract_old(const UINT8 *base, map_entry *entry, UINT32 h
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chd_open_file - open a CHD file for access
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-------------------------------------------------*/
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CHD_EXPORT chd_error chd_open_file(core_file *file, int mode, chd_file *parent, chd_file **chd)
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CHD_EXPORT chd_error chd_open_file(FILE *file, int mode, chd_file *parent, chd_file **chd) {
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core_file *stream = malloc(sizeof(core_file));
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if (!stream)
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return CHDERR_OUT_OF_MEMORY;
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stream->argp = file;
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stream->fsize = core_stdio_fsize;
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stream->fread = core_stdio_fread;
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stream->fclose = core_stdio_fclose_nonowner;
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stream->fseek = core_stdio_fseek;
|
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|
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return chd_open_core_file(stream, mode, parent, chd);
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}
|
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|
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/*-------------------------------------------------
|
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chd_open_core_file - open a CHD file for access
|
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-------------------------------------------------*/
|
||||
|
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CHD_EXPORT chd_error chd_open_core_file(core_file *file, int mode, chd_file *parent, chd_file **chd)
|
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{
|
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chd_file *newchd = NULL;
|
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chd_error err;
|
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@ -1492,6 +1683,18 @@ CHD_EXPORT chd_error chd_open_file(core_file *file, int mode, chd_file *parent,
|
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codec = &newchd->zlib_codec_data;
|
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break;
|
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|
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case CHD_CODEC_LZMA:
|
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codec = &newchd->lzma_codec_data;
|
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break;
|
||||
|
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case CHD_CODEC_HUFFMAN:
|
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codec = &newchd->huff_codec_data;
|
||||
break;
|
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|
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case CHD_CODEC_FLAC:
|
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codec = &newchd->flac_codec_data;
|
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break;
|
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|
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case CHD_CODEC_CD_ZLIB:
|
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codec = &newchd->cdzl_codec_data;
|
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break;
|
||||
@ -1530,56 +1733,26 @@ cleanup:
|
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memory
|
||||
-------------------------------------------------*/
|
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|
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CHD_EXPORT chd_error chd_precache(chd_file* chd)
|
||||
CHD_EXPORT chd_error chd_precache(chd_file *chd)
|
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{
|
||||
return chd_precache_progress(chd, NULL, NULL);
|
||||
}
|
||||
|
||||
CHD_EXPORT chd_error chd_precache_progress(chd_file *chd, void(*progress)(size_t pos, size_t total, void* param), void* param)
|
||||
{
|
||||
#define PRECACHE_CHUNK_SIZE 16 * 1024 * 1024
|
||||
|
||||
#ifdef _MSC_VER
|
||||
size_t size, done, req_count, count, last_update_done, update_interval;
|
||||
#else
|
||||
ssize_t size, done, req_count, count, last_update_done, update_interval;
|
||||
#endif
|
||||
INT64 count;
|
||||
UINT64 size;
|
||||
|
||||
if (chd->file_cache == NULL)
|
||||
{
|
||||
core_fseek(chd->file, 0, SEEK_END);
|
||||
size = core_ftell(chd->file);
|
||||
if (size <= 0)
|
||||
size = core_fsize(chd->file);
|
||||
if ((INT64)size <= 0)
|
||||
return CHDERR_INVALID_DATA;
|
||||
chd->file_cache = malloc(size);
|
||||
if (chd->file_cache == NULL)
|
||||
return CHDERR_OUT_OF_MEMORY;
|
||||
core_fseek(chd->file, 0, SEEK_SET);
|
||||
|
||||
done = 0;
|
||||
last_update_done = 0;
|
||||
update_interval = ((size + 99) / 100);
|
||||
|
||||
while (done < size)
|
||||
count = core_fread(chd->file, chd->file_cache, size);
|
||||
if (count != size)
|
||||
{
|
||||
req_count = size - done;
|
||||
if (req_count > PRECACHE_CHUNK_SIZE)
|
||||
req_count = PRECACHE_CHUNK_SIZE;
|
||||
|
||||
count = core_fread(chd->file, chd->file_cache + done, req_count);
|
||||
if (count != req_count)
|
||||
{
|
||||
free(chd->file_cache);
|
||||
chd->file_cache = NULL;
|
||||
return CHDERR_READ_ERROR;
|
||||
}
|
||||
|
||||
done += req_count;
|
||||
if (progress != NULL && (done - last_update_done) >= update_interval && done != size)
|
||||
{
|
||||
last_update_done = done;
|
||||
progress(done, size, param);
|
||||
}
|
||||
free(chd->file_cache);
|
||||
chd->file_cache = NULL;
|
||||
return CHDERR_READ_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
@ -1614,7 +1787,7 @@ CHD_EXPORT chd_error chd_open(const char *filename, int mode, chd_file *parent,
|
||||
}
|
||||
|
||||
/* open the file */
|
||||
file = core_fopen(filename);
|
||||
file = core_stdio_fopen(filename);
|
||||
if (file == 0)
|
||||
{
|
||||
err = CHDERR_FILE_NOT_FOUND;
|
||||
@ -1622,12 +1795,7 @@ CHD_EXPORT chd_error chd_open(const char *filename, int mode, chd_file *parent,
|
||||
}
|
||||
|
||||
/* now open the CHD */
|
||||
err = chd_open_file(file, mode, parent, chd);
|
||||
if (err != CHDERR_NONE)
|
||||
goto cleanup;
|
||||
|
||||
/* we now own this file */
|
||||
(*chd)->owns_file = TRUE;
|
||||
return chd_open_core_file(file, mode, parent, chd);
|
||||
|
||||
cleanup:
|
||||
if ((err != CHDERR_NONE) && (file != NULL))
|
||||
@ -1664,18 +1832,30 @@ CHD_EXPORT void chd_close(chd_file *chd)
|
||||
|
||||
switch (chd->codecintf[i]->compression)
|
||||
{
|
||||
case CHD_CODEC_CD_LZMA:
|
||||
codec = &chd->cdlz_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_ZLIB:
|
||||
codec = &chd->zlib_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_LZMA:
|
||||
codec = &chd->lzma_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_HUFFMAN:
|
||||
codec = &chd->huff_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_FLAC:
|
||||
codec = &chd->flac_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_CD_ZLIB:
|
||||
codec = &chd->cdzl_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_CD_LZMA:
|
||||
codec = &chd->cdlz_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_CD_FLAC:
|
||||
codec = &chd->cdfl_codec_data;
|
||||
break;
|
||||
@ -1709,7 +1889,7 @@ CHD_EXPORT void chd_close(chd_file *chd)
|
||||
free(chd->map);
|
||||
|
||||
/* close the file */
|
||||
if (chd->owns_file && chd->file != NULL)
|
||||
if (chd->file != NULL)
|
||||
core_fclose(chd->file);
|
||||
|
||||
#ifdef NEED_CACHE_HUNK
|
||||
@ -1808,7 +1988,7 @@ CHD_EXPORT chd_error chd_read_header(const char *filename, chd_header *header)
|
||||
EARLY_EXIT(err = CHDERR_INVALID_PARAMETER);
|
||||
|
||||
/* open the file */
|
||||
chd.file = core_fopen(filename);
|
||||
chd.file = core_stdio_fopen(filename);
|
||||
if (chd.file == NULL)
|
||||
EARLY_EXIT(err = CHDERR_FILE_NOT_FOUND);
|
||||
|
||||
@ -2096,6 +2276,8 @@ static chd_error header_read(chd_file *chd, chd_header *header)
|
||||
header->logicalbytes = (UINT64)header->obsolete_cylinders * (UINT64)header->obsolete_heads * (UINT64)header->obsolete_sectors * (UINT64)seclen;
|
||||
header->hunkbytes = seclen * header->obsolete_hunksize;
|
||||
header->unitbytes = header_guess_unitbytes(chd);
|
||||
if (header->unitbytes == 0)
|
||||
return CHDERR_INVALID_DATA;
|
||||
header->unitcount = (header->logicalbytes + header->unitbytes - 1) / header->unitbytes;
|
||||
header->metaoffset = 0;
|
||||
}
|
||||
@ -2110,6 +2292,8 @@ static chd_error header_read(chd_file *chd, chd_header *header)
|
||||
memcpy(header->parentmd5, &rawheader[60], CHD_MD5_BYTES);
|
||||
header->hunkbytes = get_bigendian_uint32(&rawheader[76]);
|
||||
header->unitbytes = header_guess_unitbytes(chd);
|
||||
if (header->unitbytes == 0)
|
||||
return CHDERR_INVALID_DATA;
|
||||
header->unitcount = (header->logicalbytes + header->unitbytes - 1) / header->unitbytes;
|
||||
memcpy(header->sha1, &rawheader[80], CHD_SHA1_BYTES);
|
||||
memcpy(header->parentsha1, &rawheader[100], CHD_SHA1_BYTES);
|
||||
@ -2123,6 +2307,8 @@ static chd_error header_read(chd_file *chd, chd_header *header)
|
||||
header->metaoffset = get_bigendian_uint64(&rawheader[36]);
|
||||
header->hunkbytes = get_bigendian_uint32(&rawheader[44]);
|
||||
header->unitbytes = header_guess_unitbytes(chd);
|
||||
if (header->unitbytes == 0)
|
||||
return CHDERR_INVALID_DATA;
|
||||
header->unitcount = (header->logicalbytes + header->unitbytes - 1) / header->unitbytes;
|
||||
memcpy(header->sha1, &rawheader[48], CHD_SHA1_BYTES);
|
||||
memcpy(header->parentsha1, &rawheader[68], CHD_SHA1_BYTES);
|
||||
@ -2141,8 +2327,12 @@ static chd_error header_read(chd_file *chd, chd_header *header)
|
||||
header->mapoffset = get_bigendian_uint64(&rawheader[40]);
|
||||
header->metaoffset = get_bigendian_uint64(&rawheader[48]);
|
||||
header->hunkbytes = get_bigendian_uint32(&rawheader[56]);
|
||||
if (header->hunkbytes == 0)
|
||||
return CHDERR_INVALID_DATA;
|
||||
header->hunkcount = (header->logicalbytes + header->hunkbytes - 1) / header->hunkbytes;
|
||||
header->unitbytes = get_bigendian_uint32(&rawheader[60]);
|
||||
if (header->unitbytes == 0)
|
||||
return CHDERR_INVALID_DATA;
|
||||
header->unitcount = (header->logicalbytes + header->unitbytes - 1) / header->unitbytes;
|
||||
memcpy(header->sha1, &rawheader[84], CHD_SHA1_BYTES);
|
||||
memcpy(header->parentsha1, &rawheader[104], CHD_SHA1_BYTES);
|
||||
@ -2382,18 +2572,30 @@ static chd_error hunk_read_into_memory(chd_file *chd, UINT32 hunknum, UINT8 *des
|
||||
return CHDERR_READ_ERROR;
|
||||
switch (chd->codecintf[rawmap[0]]->compression)
|
||||
{
|
||||
case CHD_CODEC_CD_LZMA:
|
||||
codec = &chd->cdlz_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_ZLIB:
|
||||
codec = &chd->zlib_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_LZMA:
|
||||
codec = &chd->lzma_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_HUFFMAN:
|
||||
codec = &chd->huff_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_FLAC:
|
||||
codec = &chd->flac_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_CD_ZLIB:
|
||||
codec = &chd->cdzl_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_CD_LZMA:
|
||||
codec = &chd->cdlz_codec_data;
|
||||
break;
|
||||
|
||||
case CHD_CODEC_CD_FLAC:
|
||||
codec = &chd->cdfl_codec_data;
|
||||
break;
|
||||
@ -2625,10 +2827,6 @@ static chd_error zlib_codec_init(void *codec, uint32_t hunkbytes)
|
||||
else
|
||||
err = CHDERR_NONE;
|
||||
|
||||
/* handle an error */
|
||||
if (err != CHDERR_NONE)
|
||||
free(data);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
@ -2768,3 +2966,87 @@ static void zlib_allocator_free(voidpf opaque)
|
||||
if (alloc->allocptr[i])
|
||||
free(alloc->allocptr[i]);
|
||||
}
|
||||
|
||||
/*-------------------------------------------------
|
||||
core_stdio_fopen - core_file wrapper over fopen
|
||||
-------------------------------------------------*/
|
||||
static core_file *core_stdio_fopen(char const *path) {
|
||||
core_file *file = malloc(sizeof(core_file));
|
||||
if (!file)
|
||||
return NULL;
|
||||
if (!(file->argp = fopen(path, "rb"))) {
|
||||
free(file);
|
||||
return NULL;
|
||||
}
|
||||
file->fsize = core_stdio_fsize;
|
||||
file->fread = core_stdio_fread;
|
||||
file->fclose = core_stdio_fclose;
|
||||
file->fseek = core_stdio_fseek;
|
||||
return file;
|
||||
}
|
||||
|
||||
/*-------------------------------------------------
|
||||
core_stdio_fsize - core_file function for
|
||||
getting file size with stdio
|
||||
-------------------------------------------------*/
|
||||
static UINT64 core_stdio_fsize(core_file *file) {
|
||||
#if defined USE_LIBRETRO_VFS
|
||||
#define core_stdio_fseek_impl fseek
|
||||
#define core_stdio_ftell_impl ftell
|
||||
#elif defined(__WIN32__) || defined(_WIN32) || defined(WIN32) || defined(__WIN64__)
|
||||
#define core_stdio_fseek_impl _fseeki64
|
||||
#define core_stdio_ftell_impl _ftelli64
|
||||
#elif defined(_LARGEFILE_SOURCE) && defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64
|
||||
#define core_stdio_fseek_impl fseeko64
|
||||
#define core_stdio_ftell_impl ftello64
|
||||
#elif defined(__PS3__) && !defined(__PSL1GHT__) || defined(__SWITCH__) || defined(__vita__)
|
||||
#define core_stdio_fseek_impl(x,y,z) fseek(x,(off_t)y,z)
|
||||
#define core_stdio_ftell_impl(x) (off_t)ftell(x)
|
||||
#else
|
||||
#define core_stdio_fseek_impl fseeko
|
||||
#define core_stdio_ftell_impl ftello
|
||||
#endif
|
||||
FILE *fp;
|
||||
UINT64 p, rv;
|
||||
fp = (FILE*)file->argp;
|
||||
|
||||
p = core_stdio_ftell_impl(fp);
|
||||
core_stdio_fseek_impl(fp, 0, SEEK_END);
|
||||
rv = core_stdio_ftell_impl(fp);
|
||||
core_stdio_fseek_impl(fp, p, SEEK_SET);
|
||||
return rv;
|
||||
}
|
||||
|
||||
/*-------------------------------------------------
|
||||
core_stdio_fread - core_file wrapper over fread
|
||||
-------------------------------------------------*/
|
||||
static size_t core_stdio_fread(void *ptr, size_t size, size_t nmemb, core_file *file) {
|
||||
return fread(ptr, size, nmemb, (FILE*)file->argp);
|
||||
}
|
||||
|
||||
/*-------------------------------------------------
|
||||
core_stdio_fclose - core_file wrapper over fclose
|
||||
-------------------------------------------------*/
|
||||
static int core_stdio_fclose(core_file *file) {
|
||||
int err = fclose((FILE*)file->argp);
|
||||
if (err == 0)
|
||||
free(file);
|
||||
return err;
|
||||
}
|
||||
|
||||
/*-------------------------------------------------
|
||||
core_stdio_fclose_nonowner - don't call fclose because
|
||||
we don't own the underlying file, but do free the
|
||||
core_file because libchdr did allocate that itself.
|
||||
-------------------------------------------------*/
|
||||
static int core_stdio_fclose_nonowner(core_file *file) {
|
||||
free(file);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*-------------------------------------------------
|
||||
core_stdio_fseek - core_file wrapper over fclose
|
||||
-------------------------------------------------*/
|
||||
static int core_stdio_fseek(core_file* file, INT64 offset, int whence) {
|
||||
return core_stdio_fseek_impl((FILE*)file->argp, offset, whence);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user