bc2664e6b5
The new PSP toolchain automatically links system libraries which wasn't the case before. The ordering of libraries builtin in GCC and our spec file collided. This fixes the order. PSP SDK includes time.h so it needs an exemption. A warning was emitted about a if without curly braces which are needed.
336 lines
8.3 KiB
C++
336 lines
8.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifdef __PSP__
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#include <pspiofilemgr.h>
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#include "backends/platform/psp/powerman.h"
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#include "backends/fs/psp/psp-stream.h"
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#define MIN2(a,b) ((a < b) ? a : b)
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#define MIN3(a,b,c) ( (a < b) ? (a < c ? a : c) : (b < c ? b : c) )
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//#define __PSP_PRINT_TO_FILE__ /* For debugging suspend stuff, we have no screen output */
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//#define __PSP_DEBUG_FUNCS__ /* For debugging function calls */
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//#define __PSP_DEBUG_PRINT__ /* For debug printouts */
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#include "backends/platform/psp/trace.h"
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//#define DEBUG_BUFFERS /* to see the contents of the buffers being read */
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#ifdef DEBUG_BUFFERS
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void printBuffer(byte *ptr, uint32 len) {
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uint32 printLen = len <= 10 ? len : 10;
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for (int i = 0; i < printLen; i++) {
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PSP_INFO_PRINT("%x ", ptr[i]);
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}
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if (len > 10) {
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PSP_INFO_PRINT("... ");
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for (int i = len - 10; i < len; i++)
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PSP_INFO_PRINT("%x ", ptr[i]);
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}
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PSP_INFO_PRINT("\n");
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}
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#endif
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// Class PspIoStream ------------------------------------------------
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PspIoStream::PspIoStream(const Common::String &path, bool writeMode)
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: _handle(0), _path(path), _fileSize(0), _writeMode(writeMode),
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_physicalPos(0), _pos(0), _eos(false), _error(false),
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_errorSuspend(0), _errorSource(0), _errorPos(0), _errorHandle(0), _suspendCount(0) {
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DEBUG_ENTER_FUNC();
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//assert(!path.empty()); // do we need this?
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}
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PspIoStream::~PspIoStream() {
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DEBUG_ENTER_FUNC();
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if (PowerMan.beginCriticalSection())
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PSP_DEBUG_PRINT_FUNC("suspended\n");
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PowerMan.unregisterForSuspend(this); // Unregister with powermanager to be suspended
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// Must do this before fclose() or resume() will reopen.
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sceIoClose(_handle);
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PowerMan.endCriticalSection();
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}
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/* Function to open the file pointed to by the path.
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*
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*/
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SceUID PspIoStream::open() {
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DEBUG_ENTER_FUNC();
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if (PowerMan.beginCriticalSection()) {
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// No need to open? Just return the _handle resume() already opened
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PSP_DEBUG_PRINT_FUNC("suspended\n");
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}
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_handle = sceIoOpen(_path.c_str(), _writeMode ? PSP_O_WRONLY | PSP_O_CREAT | PSP_O_TRUNC : PSP_O_RDONLY, 0777);
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if (_handle <= 0) {
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_error = true;
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_handle = 0;
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}
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// Get the file size. This way is much faster than going to the end of the file and back
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SceIoStat stat;
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sceIoGetstat(_path.c_str(), &stat);
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_fileSize = stat.st_size; // 4GB file (32 bits) is big enough for us
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PSP_DEBUG_PRINT("%s filesize[%d]\n", _path.c_str(), _fileSize);
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PowerMan.registerForSuspend(this); // Register with the powermanager to be suspended
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PowerMan.endCriticalSection();
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return _handle;
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}
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bool PspIoStream::err() const {
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DEBUG_ENTER_FUNC();
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if (_error) // We dump since no printing to screen with suspend callback
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PSP_ERROR("mem_error[%d], source[%d], suspend error[%d], pos[%d],"
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"_errorPos[%d], _errorHandle[%p], suspendCount[%d]\n",
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_error, _errorSource, _errorSuspend, _pos,
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_errorPos, _errorHandle, _suspendCount);
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return _error;
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}
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void PspIoStream::clearErr() {
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_error = false;
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}
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bool PspIoStream::eos() const {
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return _eos;
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}
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int64 PspIoStream::pos() const {
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return _pos;
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}
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int64 PspIoStream::size() const {
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return _fileSize;
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}
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bool PspIoStream::physicalSeekFromCur(int32 offset) {
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int ret = sceIoLseek32(_handle, offset, PSP_SEEK_CUR);
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if (ret < 0) {
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_error = true;
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PSP_ERROR("failed to seek in file[%s] to [%x]. Error[%x]\n", _path.c_str(), offset, ret);
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return false;
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}
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_physicalPos += offset;
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return true;
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}
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bool PspIoStream::seek(int64 offs, int whence) {
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DEBUG_ENTER_FUNC();
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PSP_DEBUG_PRINT_FUNC("offset[0x%x], whence[%d], _pos[0x%x], _physPos[0x%x]\n", offs, whence, _pos, _physicalPos);
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_eos = false;
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int32 posToSearchFor = 0;
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switch (whence) {
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case SEEK_CUR:
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posToSearchFor = _pos;
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break;
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case SEEK_END:
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posToSearchFor = _fileSize;
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break;
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}
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posToSearchFor += offs;
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// Check for bad values
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if (posToSearchFor < 0) {
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_error = true;
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return false;
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} else if (posToSearchFor > _fileSize) {
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_error = true;
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_eos = true;
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return false;
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}
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_pos = posToSearchFor;
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return true;
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}
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uint32 PspIoStream::read(void *ptr, uint32 len) {
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DEBUG_ENTER_FUNC();
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PSP_DEBUG_PRINT_FUNC("filename[%s], len[0x%x], ptr[%p], _pos[%x], _physPos[%x]\n", _path.c_str(), len, ptr, _pos, _physicalPos);
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if (_error || _eos || len <= 0)
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return 0;
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uint32 lenRemainingInFile = _fileSize - _pos;
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// check for getting EOS
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if (len > lenRemainingInFile) {
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len = lenRemainingInFile;
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_eos = true;
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}
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if (PowerMan.beginCriticalSection())
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PSP_DEBUG_PRINT_FUNC("suspended\n");
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// check if we need to seek
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if (_pos != _physicalPos) {
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PSP_DEBUG_PRINT("seeking from %x to %x\n", _physicalPos, _pos);
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if (!physicalSeekFromCur(_pos - _physicalPos)) {
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_error = true;
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return 0;
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}
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}
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int ret = sceIoRead(_handle, ptr, len);
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PowerMan.endCriticalSection();
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_physicalPos += ret; // Update position
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_pos = _physicalPos;
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if (ret != (int)len) { // error
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PSP_ERROR("sceIoRead returned [0x%x] instead of len[0x%x]\n", ret, len);
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_error = true;
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_errorSource = 4;
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}
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return ret;
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}
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uint32 PspIoStream::write(const void *ptr, uint32 len) {
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DEBUG_ENTER_FUNC();
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PSP_DEBUG_PRINT_FUNC("filename[%s], len[0x%x], ptr[%p], _pos[%x], _physPos[%x]\n", _path.c_str(), len, ptr, _pos, _physicalPos);
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if (!len || _error) // we actually get some calls with len == 0!
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return 0;
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_eos = false; // we can't have eos with write
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if (PowerMan.beginCriticalSection())
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PSP_DEBUG_PRINT_FUNC("suspended\n");
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// check if we need to seek
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if (_pos != _physicalPos)
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if (!physicalSeekFromCur(_pos - _physicalPos)) {
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_error = true;
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return 0;
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}
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int ret = sceIoWrite(_handle, ptr, len);
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PowerMan.endCriticalSection();
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if (ret != (int)len) {
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_error = true;
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_errorSource = 5;
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PSP_ERROR("sceIoWrite returned[0x%x] instead of len[0x%x]\n", ret, len);
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}
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_physicalPos += ret;
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_pos = _physicalPos;
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if (_pos > _fileSize)
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_fileSize = _pos;
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return ret;
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}
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bool PspIoStream::flush() {
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return true;
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}
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// For the PSP, since we're building in suspend support, we moved opening
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// the actual file to an open function since we need an actual PspIoStream object to suspend.
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//
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PspIoStream *PspIoStream::makeFromPath(const Common::String &path, bool writeMode) {
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DEBUG_ENTER_FUNC();
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PspIoStream *stream = new PspIoStream(path, writeMode);
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if (stream->open() <= 0) {
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delete stream;
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stream = 0;
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}
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return stream;
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}
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/*
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* Function to suspend the IO stream (called by PowerManager)
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* we can have no output here
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*/
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int PspIoStream::suspend() {
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DEBUG_ENTER_FUNC();
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_suspendCount++;
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if (_handle > 0 && _pos < 0) { /* check for error */
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_errorSuspend = SuspendError;
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_errorPos = _pos;
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_errorHandle = _handle;
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}
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if (_handle > 0) {
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sceIoClose(_handle); // close our file descriptor
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_handle = 0xFFFFFFFF; // Set handle to non-null invalid value so makeFromPath doesn't return error
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}
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return 0;
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}
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/*
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* Function to resume the IO stream (called by Power Manager)
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*/
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int PspIoStream::resume() {
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DEBUG_ENTER_FUNC();
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int ret = 0;
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_suspendCount--;
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// We reopen our file descriptor
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_handle = sceIoOpen(_path.c_str(), _writeMode ? PSP_O_RDWR | PSP_O_CREAT : PSP_O_RDONLY, 0777); // open
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if (_handle <= 0) {
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_errorSuspend = ResumeError;
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_errorPos = _pos;
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}
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// Resume our previous position if needed
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if (_handle > 0 && _pos > 0) {
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ret = sceIoLseek32(_handle, _pos, PSP_SEEK_SET);
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_physicalPos = _pos;
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if (ret < 0) { // Check for problem
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_errorSuspend = ResumeError;
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_errorPos = _pos;
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_errorHandle = _handle;
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}
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}
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return ret;
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}
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#endif /* __PSP__ */
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