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Move some meta STREAMFILEs to separate file for visibility

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The code may be standardized and extended in the future for some meta
needing similar features, so this is just to signal its existence
This commit is contained in:
bnnm 2017-12-06 12:15:27 +01:00
parent c8cc25c84b
commit 5672cac597
8 changed files with 633 additions and 709 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

109
src/meta/aax.c
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@ -1,16 +1,5 @@
#include "../vgmstream.h"
#include "meta.h"
#include "../util.h"
typedef struct _AAXSTREAMFILE
{
STREAMFILE sf;
STREAMFILE *real_file;
off_t start_physical_offset;
size_t file_size;
} AAXSTREAMFILE;
static STREAMFILE *open_aax_with_STREAMFILE(STREAMFILE *file,off_t start_offset,size_t file_size);
#include "aax_streamfile.h"
struct utf_query
{
@ -107,10 +96,9 @@ struct utf_table_info
};
/* Actual AAX init fcn */
/* AAX - segmented ADX [Padora's Tower (Wii)] */
VGMSTREAM * init_vgmstream_aax(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
VGMSTREAM * vgmstream = NULL;
STREAMFILE * streamFileAAX = NULL;
STREAMFILE * streamFileADX = NULL;
char filename[PATH_LIMIT];
@ -131,7 +119,7 @@ VGMSTREAM * init_vgmstream_aax(STREAMFILE *streamFile) {
int channel_count = 0, segment_count;
int sample_rate = 0;
int i;
int i;
long aax_data_offset;
@ -297,91 +285,6 @@ fail:
return NULL;
}
/* virtual file, a piece of the overall file */
static size_t read_aax(AAXSTREAMFILE *streamfile,uint8_t *dest,off_t offset,size_t length)
{
/* truncate at end of logical file */
if (offset+length > streamfile->file_size)
{
long signed_length = length;
signed_length = streamfile->file_size - offset;
if (signed_length < 0) signed_length = 0;
length = signed_length;
}
return read_streamfile(dest,
streamfile->start_physical_offset+offset,
length,streamfile->real_file);
}
static void close_aax(AAXSTREAMFILE *streamfile)
{
free(streamfile);
return;
}
static size_t get_size_aax(AAXSTREAMFILE *streamfile)
{
return 0;
}
static size_t get_offset_aax(AAXSTREAMFILE *streamfile)
{
long offset = streamfile->real_file->get_offset(streamfile->real_file);
offset -= streamfile->start_physical_offset;
if (offset < 0) offset = 0;
if (offset > streamfile->file_size) offset = streamfile->file_size;
return offset;
}
static void get_name_aax(AAXSTREAMFILE *streamfile,char *buffer,size_t length)
{
strncpy(buffer,"ARBITRARY.ADX",length);
buffer[length-1]='\0';
}
static STREAMFILE *open_aax_impl(AAXSTREAMFILE *streamfile,const char * const filename,size_t buffersize)
{
AAXSTREAMFILE *newfile;
if (strcmp(filename,"ARBITRARY.ADX"))
return NULL;
newfile = malloc(sizeof(AAXSTREAMFILE));
if (!newfile)
return NULL;
memcpy(newfile,streamfile,sizeof(AAXSTREAMFILE));
return &newfile->sf;
}
static STREAMFILE *open_aax_with_STREAMFILE(STREAMFILE *file,off_t start_offset,size_t file_size)
{
AAXSTREAMFILE *streamfile = malloc(sizeof(AAXSTREAMFILE));
if (!streamfile)
return NULL;
/* success, set our pointers */
streamfile->sf.read = (void*)read_aax;
streamfile->sf.get_size = (void*)get_size_aax;
streamfile->sf.get_offset = (void*)get_offset_aax;
streamfile->sf.get_name = (void*)get_name_aax;
streamfile->sf.get_realname = (void*)get_name_aax;
streamfile->sf.open = (void*)open_aax_impl;
streamfile->sf.close = (void*)close_aax;
#ifdef PROFILE_STREAMFILE
streamfile->sf.get_bytes_read = NULL;
streamfile->sf.get_error_count = NULL;
#endif
streamfile->real_file = file;
streamfile->start_physical_offset = start_offset;
streamfile->file_size = file_size;
return &streamfile->sf;
}
/* @UTF table reading, abridged */
static struct utf_query_result analyze_utf(STREAMFILE *infile, const long offset, const struct utf_query *query)
{
@ -744,8 +647,7 @@ static struct offset_size_pair query_utf_data(STREAMFILE *infile, const long off
/* CRI's UTF wrapper around DSP */
VGMSTREAM * init_vgmstream_utf_dsp(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
int table_error = 0;
@ -843,4 +745,3 @@ fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}

87
src/meta/aax_streamfile.h Normal file
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@ -0,0 +1,87 @@
#ifndef _AAX_STREAMFILE_H_
#define _AAX_STREAMFILE_H_
#include "../streamfile.h"
/* a streamfile representing a subfile inside another */
typedef struct _AAXSTREAMFILE {
STREAMFILE sf;
STREAMFILE *real_file;
off_t start_physical_offset;
size_t file_size;
} AAXSTREAMFILE;
static size_t read_aax(AAXSTREAMFILE *streamfile,uint8_t *dest,off_t offset,size_t length) {
/* truncate at end of logical file */
if (offset+length > streamfile->file_size) {
long signed_length = length;
signed_length = streamfile->file_size - offset;
if (signed_length < 0) signed_length = 0;
length = signed_length;
}
return read_streamfile(dest, streamfile->start_physical_offset+offset, length,streamfile->real_file);
}
static void close_aax(AAXSTREAMFILE *streamfile) {
free(streamfile);
return;
}
static size_t get_size_aax(AAXSTREAMFILE *streamfile) {
return 0;
}
static size_t get_offset_aax(AAXSTREAMFILE *streamfile) {
long offset = streamfile->real_file->get_offset(streamfile->real_file);
offset -= streamfile->start_physical_offset;
if (offset < 0) offset = 0;
if (offset > streamfile->file_size) offset = streamfile->file_size;
return offset;
}
static void get_name_aax(AAXSTREAMFILE *streamfile,char *buffer,size_t length) {
strncpy(buffer,"ARBITRARY.ADX",length);
buffer[length-1]='\0';
}
static STREAMFILE *open_aax_impl(AAXSTREAMFILE *streamfile,const char * const filename,size_t buffersize) {
AAXSTREAMFILE *newfile;
if (strcmp(filename,"ARBITRARY.ADX"))
return NULL;
newfile = malloc(sizeof(AAXSTREAMFILE));
if (!newfile)
return NULL;
memcpy(newfile,streamfile,sizeof(AAXSTREAMFILE));
return &newfile->sf;
}
static STREAMFILE *open_aax_with_STREAMFILE(STREAMFILE *file,off_t start_offset,size_t file_size) {
AAXSTREAMFILE *streamfile = malloc(sizeof(AAXSTREAMFILE));
if (!streamfile)
return NULL;
/* success, set our pointers */
streamfile->sf.read = (void*)read_aax;
streamfile->sf.get_size = (void*)get_size_aax;
streamfile->sf.get_offset = (void*)get_offset_aax;
streamfile->sf.get_name = (void*)get_name_aax;
streamfile->sf.get_realname = (void*)get_name_aax;
streamfile->sf.open = (void*)open_aax_impl;
streamfile->sf.close = (void*)close_aax;
#ifdef PROFILE_STREAMFILE
streamfile->sf.get_bytes_read = NULL;
streamfile->sf.get_error_count = NULL;
#endif
streamfile->real_file = file;
streamfile->start_physical_offset = start_offset;
streamfile->file_size = file_size;
return &streamfile->sf;
}
#endif /* _AAX_STREAMFILE_H_ */

204
src/meta/aix.c
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@ -1,20 +1,7 @@
#include "../vgmstream.h"
#include "meta.h"
#include "../util.h"
typedef struct _AIXSTREAMFILE
{
STREAMFILE sf;
STREAMFILE *real_file;
off_t start_physical_offset;
off_t current_physical_offset;
off_t current_logical_offset;
off_t current_block_size;
int stream_id;
} AIXSTREAMFILE;
static STREAMFILE *open_aix_with_STREAMFILE(STREAMFILE *file,off_t start_offset,int stream_id);
#include "aix_streamfile.h"
/* AIX - interleaved AAX, N segments per channels [SoulCalibur IV (PS3)] */
VGMSTREAM * init_vgmstream_aix(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
@ -228,190 +215,3 @@ fail:
}
return NULL;
}
static size_t read_aix(AIXSTREAMFILE *streamfile,uint8_t *dest,off_t offset,size_t length)
{
size_t sz = 0;
/*printf("trying to read %x bytes from %x (str%d)\n",length,offset,streamfile->stream_id);*/
while (length > 0)
{
int read_something = 0;
/* read the beginning of the requested block, if we can */
if (offset >= streamfile->current_logical_offset)
{
off_t to_read;
off_t length_available;
length_available =
(streamfile->current_logical_offset+
streamfile->current_block_size) -
offset;
if (length < length_available)
{
to_read = length;
}
else
{
to_read = length_available;
}
if (to_read > 0)
{
size_t bytes_read;
bytes_read = read_streamfile(dest,
streamfile->current_physical_offset+0x10+
(offset-streamfile->current_logical_offset),
to_read,streamfile->real_file);
sz += bytes_read;
if (bytes_read != to_read)
{
/* an error which we will not attempt to handle here */
return sz;
}
read_something = 1;
dest += bytes_read;
offset += bytes_read;
length -= bytes_read;
}
}
if (!read_something)
{
/* couldn't read anything, must seek */
int found_block = 0;
/* as we have no memory we must start seeking from the beginning */
if (offset < streamfile->current_logical_offset)
{
streamfile->current_logical_offset = 0;
streamfile->current_block_size = 0;
streamfile->current_physical_offset =
streamfile->start_physical_offset;
}
/* seek ye forwards */
while (!found_block) {
/*printf("seek looks at %x\n",streamfile->current_physical_offset);*/
switch (read_32bitBE(streamfile->current_physical_offset,
streamfile->real_file))
{
case 0x41495850: /* AIXP */
if (read_8bit(
streamfile->current_physical_offset+8,
streamfile->real_file) ==
streamfile->stream_id)
{
streamfile->current_block_size =
(uint16_t)read_16bitBE(
streamfile->current_physical_offset+0x0a,
streamfile->real_file);
if (offset >= streamfile->current_logical_offset+
streamfile->current_block_size)
{
streamfile->current_logical_offset +=
streamfile->current_block_size;
}
else
{
found_block = 1;
}
}
if (!found_block)
{
streamfile->current_physical_offset +=
read_32bitBE(
streamfile->current_physical_offset+0x04,
streamfile->real_file
) + 8;
}
break;
case 0x41495846: /* AIXF */
/* shouldn't ever see this */
case 0x41495845: /* AIXE */
/* shouldn't have reached the end o' the line... */
default:
return sz;
break;
} /* end block/chunk type select */
} /* end while !found_block */
} /* end if !read_something */
} /* end while length > 0 */
return sz;
}
static void close_aix(AIXSTREAMFILE *streamfile)
{
free(streamfile);
return;
}
static size_t get_size_aix(AIXSTREAMFILE *streamfile)
{
return 0;
}
static size_t get_offset_aix(AIXSTREAMFILE *streamfile)
{
return streamfile->current_logical_offset;
}
static void get_name_aix(AIXSTREAMFILE *streamfile,char *buffer,size_t length)
{
strncpy(buffer,"ARBITRARY.ADX",length);
buffer[length-1]='\0';
}
static STREAMFILE *open_aix_impl(AIXSTREAMFILE *streamfile,const char * const filename,size_t buffersize)
{
AIXSTREAMFILE *newfile;
if (strcmp(filename,"ARBITRARY.ADX"))
return NULL;
newfile = malloc(sizeof(AIXSTREAMFILE));
if (!newfile)
return NULL;
memcpy(newfile,streamfile,sizeof(AIXSTREAMFILE));
return &newfile->sf;
}
static STREAMFILE *open_aix_with_STREAMFILE(STREAMFILE *file,off_t start_offset,int stream_id)
{
AIXSTREAMFILE *streamfile = malloc(sizeof(AIXSTREAMFILE));
if (!streamfile)
return NULL;
/* success, set our pointers */
streamfile->sf.read = (void*)read_aix;
streamfile->sf.get_size = (void*)get_size_aix;
streamfile->sf.get_offset = (void*)get_offset_aix;
streamfile->sf.get_name = (void*)get_name_aix;
streamfile->sf.get_realname = (void*)get_name_aix;
streamfile->sf.open = (void*)open_aix_impl;
streamfile->sf.close = (void*)close_aix;
#ifdef PROFILE_STREAMFILE
streamfile->sf.get_bytes_read = NULL;
streamfile->sf.get_error_count = NULL;
#endif
streamfile->real_file = file;
streamfile->current_physical_offset =
streamfile->start_physical_offset = start_offset;
streamfile->current_logical_offset = 0;
streamfile->current_block_size = 0;
streamfile->stream_id = stream_id;
return &streamfile->sf;
}

169
src/meta/aix_streamfile.h Normal file
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@ -0,0 +1,169 @@
#ifndef _AIX_STREAMFILE_H_
#define _AIX_STREAMFILE_H_
#include "../streamfile.h"
/* a streamfile representing a subfile inside another, in blocked AIX format */
typedef struct _AIXSTREAMFILE {
STREAMFILE sf;
STREAMFILE *real_file;
off_t start_physical_offset;
off_t current_physical_offset;
off_t current_logical_offset;
off_t current_block_size;
int stream_id;
} AIXSTREAMFILE;
/*static*/ STREAMFILE *open_aix_with_STREAMFILE(STREAMFILE *file, off_t start_offset, int stream_id);
static size_t read_aix(AIXSTREAMFILE *streamfile,uint8_t *dest,off_t offset,size_t length) {
size_t sz = 0;
/*printf("trying to read %x bytes from %x (str%d)\n",length,offset,streamfile->stream_id);*/
while (length > 0) {
int read_something = 0;
/* read the beginning of the requested block, if we can */
if (offset >= streamfile->current_logical_offset) {
off_t to_read;
off_t length_available;
length_available = (streamfile->current_logical_offset + streamfile->current_block_size) - offset;
if (length < length_available) {
to_read = length;
}
else {
to_read = length_available;
}
if (to_read > 0) {
size_t bytes_read;
bytes_read = read_streamfile(dest,
streamfile->current_physical_offset+0x10 + (offset-streamfile->current_logical_offset),
to_read,streamfile->real_file);
sz += bytes_read;
if (bytes_read != to_read) {
return sz; /* an error which we will not attempt to handle here */
}
read_something = 1;
dest += bytes_read;
offset += bytes_read;
length -= bytes_read;
}
}
if (!read_something) {
/* couldn't read anything, must seek */
int found_block = 0;
/* as we have no memory we must start seeking from the beginning */
if (offset < streamfile->current_logical_offset) {
streamfile->current_logical_offset = 0;
streamfile->current_block_size = 0;
streamfile->current_physical_offset = streamfile->start_physical_offset;
}
/* seek ye forwards */
while (!found_block) {
/*printf("seek looks at %x\n",streamfile->current_physical_offset);*/
switch (read_32bitBE(streamfile->current_physical_offset, streamfile->real_file)) {
case 0x41495850: /* AIXP */
if (read_8bit(streamfile->current_physical_offset+8, streamfile->real_file) == streamfile->stream_id) {
streamfile->current_block_size = (uint16_t)read_16bitBE(streamfile->current_physical_offset+0x0a, streamfile->real_file);
if (offset >= streamfile->current_logical_offset+ streamfile->current_block_size) {
streamfile->current_logical_offset += streamfile->current_block_size;
}
else {
found_block = 1;
}
}
if (!found_block) {
streamfile->current_physical_offset += read_32bitBE(streamfile->current_physical_offset+0x04, streamfile->real_file) + 8;
}
break;
case 0x41495846: /* AIXF */
/* shouldn't ever see this */
case 0x41495845: /* AIXE */
/* shouldn't have reached the end o' the line... */
default:
return sz;
break;
} /* end block/chunk type select */
} /* end while !found_block */
} /* end if !read_something */
} /* end while length > 0 */
return sz;
}
static void close_aix(AIXSTREAMFILE *streamfile) {
free(streamfile);
return;
}
static size_t get_size_aix(AIXSTREAMFILE *streamfile) {
return 0;
}
static size_t get_offset_aix(AIXSTREAMFILE *streamfile) {
return streamfile->current_logical_offset;
}
static void get_name_aix(AIXSTREAMFILE *streamfile,char *buffer,size_t length) {
strncpy(buffer,"ARBITRARY.ADX",length);
buffer[length-1]='\0';
}
static STREAMFILE *open_aix_impl(AIXSTREAMFILE *streamfile,const char * const filename,size_t buffersize) {
AIXSTREAMFILE *newfile;
if (strcmp(filename,"ARBITRARY.ADX"))
return NULL;
newfile = malloc(sizeof(AIXSTREAMFILE));
if (!newfile)
return NULL;
memcpy(newfile,streamfile,sizeof(AIXSTREAMFILE));
return &newfile->sf;
}
/*static*/ STREAMFILE *open_aix_with_STREAMFILE(STREAMFILE *file, off_t start_offset, int stream_id) {
AIXSTREAMFILE *streamfile = malloc(sizeof(AIXSTREAMFILE));
if (!streamfile)
return NULL;
/* success, set our pointers */
streamfile->sf.read = (void*)read_aix;
streamfile->sf.get_size = (void*)get_size_aix;
streamfile->sf.get_offset = (void*)get_offset_aix;
streamfile->sf.get_name = (void*)get_name_aix;
streamfile->sf.get_realname = (void*)get_name_aix;
streamfile->sf.open = (void*)open_aix_impl;
streamfile->sf.close = (void*)close_aix;
#ifdef PROFILE_STREAMFILE
streamfile->sf.get_bytes_read = NULL;
streamfile->sf.get_error_count = NULL;
#endif
streamfile->real_file = file;
streamfile->current_physical_offset = start_offset;
streamfile->start_physical_offset = start_offset;
streamfile->current_logical_offset = 0;
streamfile->current_block_size = 0;
streamfile->stream_id = stream_id;
return &streamfile->sf;
}
#endif /* _AIX_STREAMFILE_H_ */

111
src/meta/gh3_bar.c
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@ -1,26 +1,10 @@
#include "meta.h"
#include "gh3_bar_streamfile.h"
// Guitar Hero III Mobile .bar
enum {BAR_KEY_LENGTH = 16};
// don't know if this is unique, but seems accurate
static const uint8_t bar_key[BAR_KEY_LENGTH] =
{0xbd,0x14,0x0e,0x0a,0x91,0xeb,0xaa,0xf6,
0x11,0x44,0x17,0xc2,0x1c,0xe4,0x66,0x80};
typedef struct _BARSTREAM
{
STREAMFILE sf;
STREAMFILE *real_file;
} BARSTREAM;
STREAMFILE *wrap_bar_STREAMFILE(STREAMFILE *file);
/* Guitar Hero III Mobile .bar */
VGMSTREAM * init_vgmstream_gh3_bar(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
// don't close, this is just the source streamFile wrapped
STREAMFILE* streamFileBAR = NULL;
STREAMFILE* streamFileBAR = NULL; // don't close, this is just the source streamFile wrapped
char filename[PATH_LIMIT];
off_t start_offset;
off_t ch2_start_offset;
@ -91,92 +75,3 @@ fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
static size_t read_bar(BARSTREAM *streamFile, uint8_t *dest, off_t offset, size_t length)
{
off_t i;
size_t read_length =
streamFile->real_file->read(streamFile->real_file, dest, offset, length);
for (i = 0; i < read_length; i++)
{
dest[i] = dest[i] ^ bar_key[(i+offset)%BAR_KEY_LENGTH];
}
return read_length;
}
static size_t get_size_bar(BARSTREAM *streamFile)
{
return streamFile->real_file->get_size(streamFile->real_file);
}
static size_t get_offset_bar(BARSTREAM *streamFile)
{
return streamFile->real_file->get_offset(streamFile->real_file);
}
static void get_name_bar(BARSTREAM *streamFile, char *name, size_t length)
{
return streamFile->real_file->get_name(streamFile->real_file, name, length);
}
static void get_realname_bar(BARSTREAM *streamFile, char *name, size_t length)
{
return streamFile->real_file->get_realname(streamFile->real_file, name, length);
}
STREAMFILE *open_bar(BARSTREAM *streamFile, const char * const filename, size_t buffersize)
{
STREAMFILE *newfile = streamFile->real_file->open(
streamFile->real_file,filename,buffersize);
if (!newfile)
return NULL;
return wrap_bar_STREAMFILE(newfile);
}
static void close_bar(BARSTREAM *streamFile)
{
streamFile->real_file->close(streamFile->real_file);
free(streamFile);
return;
}
#ifdef PROFILE_STREAMFILE
size_t get_bytes_read_bar(BARSTREAM *streamFile)
{
return streamFile->real_file->get_bytes_read(streamFile->real_file);
}
int (*get_error_count)(BARSTREAM *streamFile)
{
return streamFile->real_file->get_error_count(streamFile->real_file);
}
#endif
STREAMFILE *wrap_bar_STREAMFILE(STREAMFILE *file)
{
BARSTREAM *streamfile = malloc(sizeof(BARSTREAM));
if (!streamfile)
return NULL;
memset(streamfile, 0, sizeof(BARSTREAM));
streamfile->sf.read = (void*)read_bar;
streamfile->sf.get_size = (void*)get_size_bar;
streamfile->sf.get_offset = (void*)get_offset_bar;
streamfile->sf.get_name = (void*)get_name_bar;
streamfile->sf.get_realname = (void*)get_realname_bar;
streamfile->sf.open = (void*)open_bar;
streamfile->sf.close = (void*)close_bar;
#ifdef PROFILE_STREAMFILE
streamfile->sf.get_bytes_read = get_bytes_read_bar;
streamfile->sf.get_error_count = get_error_count_bar;
#endif
streamfile->real_file = file;
return &streamfile->sf;
}

100
src/meta/gh3_bar_streamfile.h Normal file
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@ -0,0 +1,100 @@
#ifndef _GH3_BAR_STREAMFILE_H_
#define _GH3_BAR_STREAMFILE_H_
#include "../streamfile.h"
/* a streamfile wrapping another for decryption */
enum {BAR_KEY_LENGTH = 16};
// don't know if this is unique, but seems accurate
static const uint8_t bar_key[BAR_KEY_LENGTH] = {
0xbd,0x14,0x0e,0x0a,0x91,0xeb,0xaa,0xf6,
0x11,0x44,0x17,0xc2,0x1c,0xe4,0x66,0x80
};
typedef struct _BARSTREAMFILE {
STREAMFILE sf;
STREAMFILE *real_file;
} BARSTREAMFILE;
/*static*/ STREAMFILE *wrap_bar_STREAMFILE(STREAMFILE *file);
static size_t read_bar(BARSTREAMFILE *streamFile, uint8_t *dest, off_t offset, size_t length) {
off_t i;
size_t read_length = streamFile->real_file->read(streamFile->real_file, dest, offset, length);
for (i = 0; i < read_length; i++) {
dest[i] = dest[i] ^ bar_key[(i+offset)%BAR_KEY_LENGTH];
}
return read_length;
}
static size_t get_size_bar(BARSTREAMFILE *streamFile) {
return streamFile->real_file->get_size(streamFile->real_file);
}
static size_t get_offset_bar(BARSTREAMFILE *streamFile) {
return streamFile->real_file->get_offset(streamFile->real_file);
}
static void get_name_bar(BARSTREAMFILE *streamFile, char *name, size_t length) {
return streamFile->real_file->get_name(streamFile->real_file, name, length);
}
static void get_realname_bar(BARSTREAMFILE *streamFile, char *name, size_t length) {
return streamFile->real_file->get_realname(streamFile->real_file, name, length);
}
STREAMFILE *open_bar(BARSTREAMFILE *streamFile, const char * const filename, size_t buffersize) {
STREAMFILE *newfile = streamFile->real_file->open(streamFile->real_file,filename,buffersize);
if (!newfile)
return NULL;
return wrap_bar_STREAMFILE(newfile);
}
static void close_bar(BARSTREAMFILE *streamFile) {
streamFile->real_file->close(streamFile->real_file);
free(streamFile);
return;
}
#ifdef PROFILE_STREAMFILE
size_t get_bytes_read_bar(BARSTREAMFILE *streamFile) {
return streamFile->real_file->get_bytes_read(streamFile->real_file);
}
int (*get_error_count)(BARSTREAMFILE *streamFile) {
return streamFile->real_file->get_error_count(streamFile->real_file);
}
#endif
/*static*/ STREAMFILE *wrap_bar_STREAMFILE(STREAMFILE *file) {
BARSTREAMFILE *streamfile = malloc(sizeof(BARSTREAMFILE));
if (!streamfile)
return NULL;
memset(streamfile, 0, sizeof(BARSTREAMFILE));
streamfile->sf.read = (void*)read_bar;
streamfile->sf.get_size = (void*)get_size_bar;
streamfile->sf.get_offset = (void*)get_offset_bar;
streamfile->sf.get_name = (void*)get_name_bar;
streamfile->sf.get_realname = (void*)get_realname_bar;
streamfile->sf.open = (void*)open_bar;
streamfile->sf.close = (void*)close_bar;
#ifdef PROFILE_STREAMFILE
streamfile->sf.get_bytes_read = get_bytes_read_bar;
streamfile->sf.get_error_count = get_error_count_bar;
#endif
streamfile->real_file = file;
return &streamfile->sf;
}
#endif /* _GH3_BAR_STREAMFILE_H_ */

428
src/meta/sqex_scd.c
View File

@ -1,31 +1,14 @@
#include "meta.h"
#include "../coding/coding.h"
#include "sqex_scd_streamfile.h"
/* Square-Enix SCD (FF XIII, XIV) */
/* special streamfile type to handle deinterleaving of complete files,
(based heavily on AIXSTREAMFILE */
typedef struct _SCDINTSTREAMFILE
{
STREAMFILE sf;
STREAMFILE *real_file;
const char * filename;
off_t start_physical_offset;
off_t current_logical_offset;
off_t interleave_block_size;
off_t stride_size;
size_t total_size;
} SCDINTSTREAMFILE;
static STREAMFILE *open_scdint_with_STREAMFILE(STREAMFILE *file, const char * filename, off_t start_offset, off_t interleave_block_size, off_t stride_size, size_t total_size);
#ifdef VGM_USE_VORBIS
static void scd_ogg_decrypt_v2_callback(void *ptr, size_t size, size_t nmemb, void *datasource, int bytes_read);
static void scd_ogg_decrypt_v3_callback(void *ptr, size_t size, size_t nmemb, void *datasource, int bytes_read);
#endif
/* SCD - Square-Enix console games (FF XIII, XIV) */
VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
@ -34,39 +17,39 @@ VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) {
int32_t loop_start, loop_end;
int target_stream = streamFile->stream_index;
int loop_flag = 0, channel_count, codec_id;
int loop_flag = 0, channel_count, codec_id, sample_rate;
int aux_chunk_count;
int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
/* check extension, case insensitive */
if ( !check_extensions(streamFile, "scd") ) goto fail;
streamFile->get_name(streamFile,filename,sizeof(filename));
/* SEDB */
if (read_32bitBE(0,streamFile) != 0x53454442) goto fail;
if (read_32bitBE(0x00,streamFile) != 0x53454442) goto fail;
/* SSCF */
if (read_32bitBE(4,streamFile) != 0x53534346) goto fail;
if (read_32bitBE(0x04,streamFile) != 0x53534346) goto fail;
/** main header section **/
if (read_32bitBE(8,streamFile) == 2 || /* version 2 BE, as seen in FFXIII demo for PS3 */
read_32bitBE(8,streamFile) == 3) { /* version 3 BE, as seen in FFXIII for PS3 */
if (read_32bitBE(0x08,streamFile) == 2 || /* version 2 BE, as seen in FFXIII demo for PS3 */
read_32bitBE(0x08,streamFile) == 3) { /* version 3 BE, as seen in FFXIII for PS3 */
read_32bit = read_32bitBE;
read_16bit = read_16bitBE;
//size_offset = 0x14;
} else if (read_32bitLE(8,streamFile) == 3 || /* version 2/3 LE, as seen in FFXIV for PC (and others?) */
read_32bitLE(8,streamFile) == 2) {
} else if (read_32bitLE(0x08,streamFile) == 3 || /* version 2/3 LE, as seen in FFXIV for PC (and others?) */
read_32bitLE(0x08,streamFile) == 2) {
read_32bit = read_32bitLE;
read_16bit = read_16bitLE;
//size_offset = 0x10;
} else goto fail;
/* 0xc: probably 00=LE, 01=BE */
/* 0xd: unk (always 0x04) */
/* 0x0c: probably 0=LE, 1=BE */
/* 0x0d: unk (always 0x04) */
tables_offset = read_16bit(0xe,streamFile);
#if 0
@ -97,14 +80,14 @@ VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) {
meta_offset = read_32bit(headers_offset + (target_stream-1)*4,streamFile);
/** stream header **/
stream_size = read_32bit(meta_offset + 0x0, streamFile);
channel_count = read_32bit(meta_offset+4,streamFile);
/* 0x8 sample rate */
codec_id = read_32bit(meta_offset+0xc,streamFile);
stream_size = read_32bit(meta_offset+0x00, streamFile);
channel_count = read_32bit(meta_offset+0x04,streamFile);
sample_rate = read_32bit(meta_offset+0x08,streamFile);
codec_id = read_32bit(meta_offset+0x0c,streamFile);
loop_start = read_32bit(meta_offset+0x10,streamFile);
loop_end = read_32bit(meta_offset+0x14,streamFile);
loop_flag = (loop_end > 0);
loop_start = read_32bit(meta_offset+0x10,streamFile);
loop_end = read_32bit(meta_offset+0x14,streamFile);
loop_flag = (loop_end > 0);
post_meta_offset = meta_offset + 0x20;
start_offset = post_meta_offset + read_32bit(meta_offset+0x18,streamFile);
@ -123,18 +106,14 @@ VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) {
}
#ifdef VGM_USE_VORBIS
/* special case using init_vgmstream_ogg_vorbis with callbacks */
if (codec_id == 0x6)
{
if (codec_id == 0x06) {
VGMSTREAM * result = NULL;
uint32_t seek_table_size, vorb_header_size;
uint8_t xor_version, xor_byte;
vgm_vorbis_info_t inf;
vgm_vorbis_info_t inf = {0};
memset(&inf, 0, sizeof(inf));
inf.loop_start = loop_start;
inf.loop_end = loop_end;
inf.loop_flag = loop_flag;
@ -205,13 +184,12 @@ VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) {
/* fill in the vital statistics */
vgmstream->channels = channel_count;
vgmstream->sample_rate = read_32bit(meta_offset+8,streamFile);
vgmstream->sample_rate = sample_rate;
vgmstream->num_streams = headers_entries;
vgmstream->meta_type = meta_SQEX_SCD;
switch (codec_id) {
case 0x1:
/* PCM */
case 0x01: /* PCM */
vgmstream->coding_type = coding_PCM16_int;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = stream_size / 2 / channel_count;
@ -221,124 +199,111 @@ VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) {
vgmstream->loop_end_sample = loop_end / 2 / channel_count;
}
break;
case 0x06: /* OGG [Final Fantasy XIII-2 (PS3), Final Fantasy XIV (PC)] */
goto fail; /* handled above */
#ifdef VGM_USE_MPEG
case 0x7:
/* MPEG */
{
mpeg_codec_data *mpeg_data = NULL;
coding_t ct;
case 0x07: { /* MPEG [Final Fantasy XIII (PS3)] */
mpeg_codec_data *mpeg_data = NULL;
/* Drakengard 3, some Kingdom Hearts */
if (vgmstream->sample_rate == 47999)
vgmstream->sample_rate = 48000;
if (vgmstream->sample_rate == 44099)
vgmstream->sample_rate = 44100;
/* Drakengard 3, some Kingdom Hearts */
if (vgmstream->sample_rate == 47999)
vgmstream->sample_rate = 48000;
if (vgmstream->sample_rate == 44099)
vgmstream->sample_rate = 44100;
mpeg_data = init_mpeg_codec_data(streamFile, start_offset, &ct, vgmstream->channels);
if (!mpeg_data) goto fail;
vgmstream->codec_data = mpeg_data;
mpeg_data = init_mpeg_codec_data(streamFile, start_offset, &vgmstream->coding_type, vgmstream->channels);
if (!mpeg_data) goto fail;
vgmstream->codec_data = mpeg_data;
vgmstream->layout_type = layout_none;
vgmstream->coding_type = ct;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = mpeg_bytes_to_samples(stream_size, mpeg_data);
vgmstream->num_samples -= vgmstream->num_samples%576;
if (loop_flag) {
vgmstream->loop_start_sample = mpeg_bytes_to_samples(loop_start, mpeg_data);
vgmstream->loop_start_sample -= vgmstream->loop_start_sample%576;
vgmstream->loop_end_sample = mpeg_bytes_to_samples(loop_end, mpeg_data);
vgmstream->loop_end_sample -= vgmstream->loop_end_sample%576;
}
vgmstream->interleave_block_size = 0;
vgmstream->num_samples = mpeg_bytes_to_samples(stream_size, mpeg_data);
vgmstream->num_samples -= vgmstream->num_samples%576;
if (loop_flag) {
vgmstream->loop_start_sample = mpeg_bytes_to_samples(loop_start, mpeg_data);
vgmstream->loop_start_sample -= vgmstream->loop_start_sample%576;
vgmstream->loop_end_sample = mpeg_bytes_to_samples(loop_end, mpeg_data);
vgmstream->loop_end_sample -= vgmstream->loop_end_sample%576;
}
vgmstream->interleave_block_size = 0;
break;
}
#endif
case 0xC:
/* MS ADPCM */
case 0x0C: /* MS ADPCM [Final Fantasy XIV (PC) sfx] */
vgmstream->coding_type = coding_MSADPCM;
vgmstream->layout_type = layout_none;
vgmstream->interleave_block_size = read_16bit(post_meta_offset+0xc,streamFile);
vgmstream->num_samples = msadpcm_bytes_to_samples(stream_size, vgmstream->interleave_block_size, vgmstream->channels);
vgmstream->interleave_block_size = read_16bit(post_meta_offset+0x0c,streamFile);
vgmstream->num_samples = msadpcm_bytes_to_samples(stream_size, vgmstream->interleave_block_size, vgmstream->channels);
if (loop_flag) {
vgmstream->loop_start_sample = msadpcm_bytes_to_samples(loop_start, vgmstream->interleave_block_size, vgmstream->channels);
vgmstream->loop_end_sample = msadpcm_bytes_to_samples(loop_end, vgmstream->interleave_block_size, vgmstream->channels);
}
break;
case 0xA: /* Dragon Quest X (Wii) */
case 0x15: /* Dragon Quest X (Wii U) (no apparent differences except higher sample rate) */
/* GC/Wii DSP ADPCM */
{
STREAMFILE * file;
int i;
const off_t interleave_size = 0x800;
const off_t stride_size = interleave_size * channel_count;
case 0x0A: /* DSP ADPCM [Dragon Quest X (Wii)] */
case 0x15: { /* DSP ADPCM [Dragon Quest X (Wii U)] (no apparent differences except higher sample rate) */
STREAMFILE * file;
int i;
const off_t interleave_size = 0x800;
const off_t stride_size = interleave_size * channel_count;
size_t total_size;
scd_int_codec_data * data = NULL;
size_t total_size;
scd_int_codec_data * data = NULL;
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_scd_int;
/* a normal DSP header... */
vgmstream->num_samples = read_32bitBE(start_offset+0,streamFile);
total_size = (read_32bitBE(start_offset+4,streamFile)+1)/2;
if (loop_flag) {
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end+1;
}
/* verify other channel headers */
for (i = 1; i < channel_count; i++) {
if (read_32bitBE(start_offset+interleave_size*i+0,streamFile) != vgmstream->num_samples ||
(read_32bitBE(start_offset+4,streamFile)+1)/2 != total_size) {
goto fail;
}
}
/* the primary streamfile we'll be using */
file = streamFile->open(streamFile,filename,stride_size);
if (!file)
goto fail;
vgmstream->ch[0].streamfile = file;
data = malloc(sizeof(scd_int_codec_data));
data->substream_count = channel_count;
data->substreams = calloc(channel_count, sizeof(VGMSTREAM *));
data->intfiles = calloc(channel_count, sizeof(STREAMFILE *));
vgmstream->codec_data = data;
for (i=0;i<channel_count;i++) {
STREAMFILE * intfile =
open_scdint_with_STREAMFILE(file, "ARBITRARY.DSP", start_offset+interleave_size*i, interleave_size, stride_size, total_size);
if (!intfile)
goto fail;
data->substreams[i] = init_vgmstream_ngc_dsp_std(intfile);
data->intfiles[i] = intfile;
if (!data->substreams[i])
goto fail;
/* TODO: only handles mono substreams, though that's all we have with DSP */
/* save start things so we can restart for seeking/looping */
/* copy the channels */
memcpy(data->substreams[i]->start_ch,data->substreams[i]->ch,sizeof(VGMSTREAMCHANNEL)*1);
/* copy the whole VGMSTREAM */
memcpy(data->substreams[i]->start_vgmstream,data->substreams[i],sizeof(VGMSTREAM));
}
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_scd_int;
/* a normal DSP header... */
total_size = (read_32bitBE(start_offset+0x04,streamFile)+1)/2;
vgmstream->num_samples = read_32bitBE(start_offset+0x00,streamFile);
if (loop_flag) {
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end+1;
}
/* verify other channel headers */
for (i = 1; i < channel_count; i++) {
if (read_32bitBE(start_offset+interleave_size*i+0,streamFile) != vgmstream->num_samples ||
(read_32bitBE(start_offset+4,streamFile)+1)/2 != total_size) {
goto fail;
}
}
/* the primary streamfile we'll be using */
file = streamFile->open(streamFile,filename,stride_size);
if (!file) goto fail;
vgmstream->ch[0].streamfile = file;
data = malloc(sizeof(scd_int_codec_data));
data->substream_count = channel_count;
data->substreams = calloc(channel_count, sizeof(VGMSTREAM *));
data->intfiles = calloc(channel_count, sizeof(STREAMFILE *));
vgmstream->codec_data = data;
for (i=0;i<channel_count;i++) {
STREAMFILE * intfile =
open_scdint_with_STREAMFILE(file, "ARBITRARY.DSP", start_offset+interleave_size*i, interleave_size, stride_size, total_size);
if (!intfile) goto fail;
data->substreams[i] = init_vgmstream_ngc_dsp_std(intfile);
data->intfiles[i] = intfile;
if (!data->substreams[i]) goto fail;
/* TODO: only handles mono substreams, though that's all we have with DSP */
/* save start things so we can restart for seeking/looping */
memcpy(data->substreams[i]->start_ch,data->substreams[i]->ch,sizeof(VGMSTREAMCHANNEL)*1);
memcpy(data->substreams[i]->start_vgmstream,data->substreams[i],sizeof(VGMSTREAM));
}
break;
}
#ifdef VGM_USE_FFMPEG
case 0xB:
/* XMA2 */ /* Lightning Returns SFX, FFXIII (X360) */
{
case 0x0B: { /* XMA2 [Final Fantasy (X360), Lightning Returns (X360) sfx] */
ffmpeg_codec_data *ffmpeg_data = NULL;
uint8_t buf[200];
int32_t bytes;
@ -356,44 +321,42 @@ VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) {
vgmstream->num_samples = ffmpeg_data->totalSamples;
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end;
}
break;
}
case 0xE:
/* ATRAC3plus */ /* Lord of Arcana (PSP) */
{
ffmpeg_codec_data *ffmpeg_data = NULL;
case 0x0E: { /* ATRAC3plus [Lord of Arcana (PSP)] */
ffmpeg_codec_data *ffmpeg_data = NULL;
/* full RIFF header at start_offset/post_meta_offset (same) */
ffmpeg_data = init_ffmpeg_offset(streamFile, start_offset,stream_size);
if (!ffmpeg_data) goto fail;
vgmstream->codec_data = ffmpeg_data;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
/* full RIFF header at start_offset/post_meta_offset (same) */
ffmpeg_data = init_ffmpeg_offset(streamFile, start_offset,stream_size);
if (!ffmpeg_data) goto fail;
vgmstream->codec_data = ffmpeg_data;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = ffmpeg_data->totalSamples; /* fact samples */
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end;
vgmstream->num_samples = ffmpeg_data->totalSamples; /* fact samples */
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end;
/* manually read skip_samples if FFmpeg didn't do it */
if (ffmpeg_data->skipSamples <= 0) {
off_t chunk_offset;
size_t chunk_size, fact_skip_samples = 0;
if (!find_chunk_le(streamFile, 0x66616374,start_offset+0xc,0, &chunk_offset,&chunk_size)) /* find "fact" */
goto fail;
if (chunk_size == 0x8) {
fact_skip_samples = read_32bitLE(chunk_offset+0x4, streamFile);
} else if (chunk_size == 0xc) {
fact_skip_samples = read_32bitLE(chunk_offset+0x8, streamFile);
}
ffmpeg_set_skip_samples(ffmpeg_data, fact_skip_samples);
/* manually read skip_samples if FFmpeg didn't do it */
if (ffmpeg_data->skipSamples <= 0) {
off_t chunk_offset;
size_t chunk_size, fact_skip_samples = 0;
if (!find_chunk_le(streamFile, 0x66616374,start_offset+0xc,0, &chunk_offset,&chunk_size)) /* find "fact" */
goto fail;
if (chunk_size == 0x8) {
fact_skip_samples = read_32bitLE(chunk_offset+0x4, streamFile);
} else if (chunk_size == 0xc) {
fact_skip_samples = read_32bitLE(chunk_offset+0x8, streamFile);
}
/* SCD loop/sample values are relative (without skip samples) vs RIFF (with skip samples), no need to adjust */
ffmpeg_set_skip_samples(ffmpeg_data, fact_skip_samples);
}
break;
/* SCD loop/sample values are relative (without skip samples) vs RIFF (with skip samples), no need to adjust */
break;
}
#endif
default:
VGM_LOG("SCD: unknown codec_id 0x%x\n", codec_id);
goto fail;
@ -410,131 +373,6 @@ fail:
return NULL;
}
static STREAMFILE *open_scdint_impl(SCDINTSTREAMFILE *streamfile,const char * const filename,size_t buffersize)
{
SCDINTSTREAMFILE *newfile;
if (strcmp(filename, streamfile->filename))
return NULL;
newfile = malloc(sizeof(SCDINTSTREAMFILE));
if (!newfile)
return NULL;
memcpy(newfile,streamfile,sizeof(SCDINTSTREAMFILE));
return &newfile->sf;
}
static void close_scdint(SCDINTSTREAMFILE *streamfile)
{
free(streamfile);
return;
}
static size_t get_size_scdint(SCDINTSTREAMFILE *streamfile)
{
return streamfile->total_size;
}
static size_t get_offset_scdint(SCDINTSTREAMFILE *streamfile)
{
return streamfile->current_logical_offset;
}
static void get_name_scdint(SCDINTSTREAMFILE *streamfile, char *buffer, size_t length)
{
strncpy(buffer,streamfile->filename,length);
buffer[length-1]='\0';
}
static size_t read_scdint(SCDINTSTREAMFILE *streamfile, uint8_t *dest, off_t offset, size_t length)
{
size_t sz = 0;
while (length > 0)
{
off_t to_read;
off_t length_available;
off_t block_num;
off_t intrablock_offset;
off_t physical_offset;
block_num = offset / streamfile->interleave_block_size;
intrablock_offset = offset % streamfile->interleave_block_size;
streamfile->current_logical_offset = offset;
physical_offset = streamfile->start_physical_offset + block_num * streamfile->stride_size + intrablock_offset;
length_available =
streamfile->interleave_block_size - intrablock_offset;
if (length < length_available)
{
to_read = length;
}
else
{
to_read = length_available;
}
if (to_read > 0)
{
size_t bytes_read;
bytes_read = read_streamfile(dest,
physical_offset,
to_read, streamfile->real_file);
sz += bytes_read;
streamfile->current_logical_offset = offset + bytes_read;
if (bytes_read != to_read)
{
/* an error which we will not attempt to handle here */
return sz;
}
dest += bytes_read;
offset += bytes_read;
length -= bytes_read;
}
}
return sz;
}
/* start_offset is for *this* interleaved stream */
static STREAMFILE *open_scdint_with_STREAMFILE(STREAMFILE *file, const char * filename, off_t start_offset, off_t interleave_block_size, off_t stride_size, size_t total_size)
{
SCDINTSTREAMFILE * scd = NULL;
/* _scdint funcs can't handle this case */
if (start_offset + total_size > file->get_size(file))
return NULL;
scd = malloc(sizeof(SCDINTSTREAMFILE));
if (!scd)
return NULL;
scd->sf.read = (void*)read_scdint;
scd->sf.get_size = (void*)get_size_scdint;
scd->sf.get_offset = (void*)get_offset_scdint;
scd->sf.get_name = (void*)get_name_scdint;
scd->sf.get_realname = (void*)get_name_scdint;
scd->sf.open = (void*)open_scdint_impl;
scd->sf.close = (void*)close_scdint;
scd->real_file = file;
scd->filename = filename;
scd->start_physical_offset = start_offset;
scd->current_logical_offset = 0;
scd->interleave_block_size = interleave_block_size;
scd->stride_size = stride_size;
scd->total_size = total_size;
return &scd->sf;
}
#ifdef VGM_USE_VORBIS
static void scd_ogg_decrypt_v2_callback(void *ptr, size_t size, size_t nmemb, void *datasource, int bytes_read) {

134
src/meta/sqex_scd_streamfile.h Normal file
View File

@ -0,0 +1,134 @@
#ifndef _SQEX_SCD_STREAMFILE_H_
#define _SQEX_SCD_STREAMFILE_H_
#include "../streamfile.h"
/* special streamfile type to handle deinterleaving of complete files (based heavily on AIXSTREAMFILE */
typedef struct _SCDINTSTREAMFILE {
STREAMFILE sf;
STREAMFILE *real_file;
const char * filename;
off_t start_physical_offset;
off_t current_logical_offset;
off_t interleave_block_size;
off_t stride_size;
size_t total_size;
} SCDINTSTREAMFILE;
/*static*/ STREAMFILE *open_scdint_with_STREAMFILE(STREAMFILE *file, const char * filename, off_t start_offset, off_t interleave_block_size, off_t stride_size, size_t total_size);
static STREAMFILE *open_scdint_impl(SCDINTSTREAMFILE *streamfile,const char * const filename,size_t buffersize) {
SCDINTSTREAMFILE *newfile;
if (strcmp(filename, streamfile->filename))
return NULL;
newfile = malloc(sizeof(SCDINTSTREAMFILE));
if (!newfile)
return NULL;
memcpy(newfile,streamfile,sizeof(SCDINTSTREAMFILE));
return &newfile->sf;
}
static void close_scdint(SCDINTSTREAMFILE *streamfile) {
free(streamfile);
return;
}
static size_t get_size_scdint(SCDINTSTREAMFILE *streamfile) {
return streamfile->total_size;
}
static size_t get_offset_scdint(SCDINTSTREAMFILE *streamfile) {
return streamfile->current_logical_offset;
}
static void get_name_scdint(SCDINTSTREAMFILE *streamfile, char *buffer, size_t length) {
strncpy(buffer,streamfile->filename,length);
buffer[length-1]='\0';
}
static size_t read_scdint(SCDINTSTREAMFILE *streamfile, uint8_t *dest, off_t offset, size_t length) {
size_t sz = 0;
while (length > 0) {
off_t to_read;
off_t length_available;
off_t block_num;
off_t intrablock_offset;
off_t physical_offset;
block_num = offset / streamfile->interleave_block_size;
intrablock_offset = offset % streamfile->interleave_block_size;
streamfile->current_logical_offset = offset;
physical_offset = streamfile->start_physical_offset + block_num * streamfile->stride_size + intrablock_offset;
length_available = streamfile->interleave_block_size - intrablock_offset;
if (length < length_available) {
to_read = length;
}
else {
to_read = length_available;
}
if (to_read > 0) {
size_t bytes_read;
bytes_read = read_streamfile(dest,
physical_offset,
to_read, streamfile->real_file);
sz += bytes_read;
streamfile->current_logical_offset = offset + bytes_read;
if (bytes_read != to_read) {
return sz; /* an error which we will not attempt to handle here */
}
dest += bytes_read;
offset += bytes_read;
length -= bytes_read;
}
}
return sz;
}
/* start_offset is for *this* interleaved stream */
/*static*/ STREAMFILE *open_scdint_with_STREAMFILE(STREAMFILE *file, const char * filename, off_t start_offset, off_t interleave_block_size, off_t stride_size, size_t total_size) {
SCDINTSTREAMFILE * scd = NULL;
/* _scdint funcs can't handle this case */
if (start_offset + total_size > file->get_size(file))
return NULL;
scd = malloc(sizeof(SCDINTSTREAMFILE));
if (!scd)
return NULL;
scd->sf.read = (void*)read_scdint;
scd->sf.get_size = (void*)get_size_scdint;
scd->sf.get_offset = (void*)get_offset_scdint;
scd->sf.get_name = (void*)get_name_scdint;
scd->sf.get_realname = (void*)get_name_scdint;
scd->sf.open = (void*)open_scdint_impl;
scd->sf.close = (void*)close_scdint;
scd->real_file = file;
scd->filename = filename;
scd->start_physical_offset = start_offset;
scd->current_logical_offset = 0;
scd->interleave_block_size = interleave_block_size;
scd->stride_size = stride_size;
scd->total_size = total_size;
return &scd->sf;
}
#endif /* _SCD_STREAMFILE_H_ */