Darryl Pogue
14 years ago
3 changed files with 255 additions and 0 deletions
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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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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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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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//////////////////////////////////////////////////////////////////////////////
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// //
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// plCachedFileReader - Reads (and writes, how ironic) decompressed sound //
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// data that is temporarily held in a cache. //
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// //
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//// NOTES ///////////////////////////////////////////////////////////////////
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// //
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// 2011.04.24 - Created by dpogue. //
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// //
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//////////////////////////////////////////////////////////////////////////////
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#include "plCachedFileReader.h" |
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//// Constructor/Destructor //////////////////////////////////////////////////
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plCachedFileReader::plCachedFileReader(const char *path, |
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plAudioCore::ChannelSelect whichChan) |
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: fFileHandle(nil) |
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{ |
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hsAssert(path != nil, "Invalid path specified in plCachedFileReader"); |
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strncpy(fFilename, path, sizeof(fFilename)); |
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/// Open the file as a plain binary stream
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fFileHandle = fopen(path, "rb"); |
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if (fFileHandle != nil) |
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{ |
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if (fread(&fHeader, 1, sizeof(plWAVHeader), fFileHandle) |
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!= sizeof(plWAVHeader)) |
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{ |
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IError("Invalid WAV file header in plCachedFileReader"); |
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return; |
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} |
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// Check format
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if (fHeader.fFormatTag != kPCMFormatTag) |
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{ |
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IError("Invalid format in plCachedFileReader"); |
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return; |
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} |
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fseek(fFileHandle, 0, SEEK_END); |
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fDataLength = ftell(fFileHandle) - sizeof(plWAVHeader); |
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fseek(fFileHandle, sizeof(plWAVHeader), SEEK_SET); |
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} |
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} |
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plCachedFileReader::~plCachedFileReader() |
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{ |
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if (fFileHandle != nil) { |
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fclose(fFileHandle); |
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} |
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} |
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void plCachedFileReader::IError(const char *msg) |
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{ |
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hsAssert(false, msg); |
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Close(); |
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} |
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void plCachedFileReader::Close() |
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{ |
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if (fFileHandle != nil) |
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{ |
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fclose(fFileHandle); |
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fFileHandle = nil; |
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} |
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} |
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UInt32 plCachedFileReader::GetDataSize() |
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{ |
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hsAssert(IsValid(), "GetDataSize() called on an invalid cache file"); |
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return fDataLength; |
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} |
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float plCachedFileReader::GetLengthInSecs() |
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{ |
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hsAssert(IsValid(), "GetLengthInSecs() called on an invalid cache file"); |
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return (float)fDataLength / (float)fHeader.fAvgBytesPerSec; |
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} |
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hsBool plCachedFileReader::SetPosition(UInt32 numBytes) |
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{ |
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hsAssert(IsValid(), "SetPosition() called on an invalid cache file"); |
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fCurPosition = numBytes; |
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hsAssert(fCurPosition <= fDataLength, "Invalid position while seeking"); |
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return !fseek(fFileHandle, sizeof(plWAVHeader) + fCurPosition, SEEK_SET); |
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} |
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hsBool plCachedFileReader::Read(UInt32 numBytes, void *buffer) |
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{ |
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hsAssert(IsValid(), "Read() called on an invalid cache file"); |
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size_t numRead = fread(buffer, 1, numBytes, fFileHandle); |
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fCurPosition += numRead; |
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hsAssert(fCurPosition <= fDataLength, "Invalid position while reading"); |
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return numRead >= numBytes; |
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} |
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UInt32 plCachedFileReader::NumBytesLeft() |
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{ |
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hsAssert(IsValid(), "NumBytesLeft() called on an invalid cache file"); |
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hsAssert(fCurPosition <= fDataLength, "Invalid position while reading"); |
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return fDataLength - fCurPosition; |
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} |
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hsBool plCachedFileReader::OpenForWriting(const char *path, plWAVHeader &header) |
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{ |
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hsAssert(path != nil, "Invalid path specified in plCachedFileReader"); |
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fHeader = header; |
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fCurPosition = 0; |
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fDataLength = 0; |
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strncpy(fFilename, path, sizeof(fFilename)); |
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/// Open the file as a plain binary stream
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fFileHandle = fopen(path, "wb"); |
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if (fFileHandle != nil) |
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{ |
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if (fwrite(&fHeader, 1, sizeof(plWAVHeader), fFileHandle) |
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!= sizeof(plWAVHeader)) |
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{ |
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IError("Could not write WAV file header in plCachedFileReader"); |
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return false; |
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} |
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} |
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return fFileHandle != nil; |
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} |
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UInt32 plCachedFileReader::Write(UInt32 bytes, void* buffer) |
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{ |
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hsAssert(IsValid(), "Write() called on an invalid cache file"); |
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size_t written = fwrite(buffer, 1, bytes, fFileHandle); |
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fCurPosition += written; |
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fDataLength += written; |
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return (UInt32)written; |
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} |
@ -0,0 +1,77 @@ |
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/*==LICENSE==*
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|
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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|
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This program is free software: you can redistribute it and/or modify |
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|
it under the terms of the GNU General Public License as published by |
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|
the Free Software Foundation, either version 3 of the License, or |
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|
(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, see <http://www.gnu.org/licenses/>.
|
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|
|
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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|
or by snail mail at: |
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Cyan Worlds, Inc. |
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|
14617 N Newport Hwy |
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Mead, WA 99021 |
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|
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*==LICENSE==*/ |
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//////////////////////////////////////////////////////////////////////////////
|
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// //
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// plCachedFileReader - Reads (and writes, how ironic) decompressed sound //
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// data that is temporarily held in a cache. //
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// //
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//// NOTES ///////////////////////////////////////////////////////////////////
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||||||
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// //
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||||||
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// 2011.04.24 - Created by dpogue. //
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// //
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//////////////////////////////////////////////////////////////////////////////
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#ifndef _plcachedfilereader_h |
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#define _plcachedfilereader_h |
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#include "plAudioFileReader.h" |
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//// Class Definition ////////////////////////////////////////////////////////
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class plCachedFileReader : public plAudioFileReader |
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{ |
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public: |
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plCachedFileReader(const char *path, |
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plAudioCore::ChannelSelect whichChan = plAudioCore::kAll); |
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virtual ~plCachedFileReader(); |
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virtual plWAVHeader &GetHeader() const { return fHeader; } |
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virtual void Close(); |
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virtual UInt32 GetDataSize(); |
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virtual float GetLengthInSecs(); |
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virtual hsBool SetPosition(UInt32 numBytes); |
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virtual hsBool Read(UInt32 numBytes, void *buffer); |
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virtual UInt32 NumBytesLeft(); |
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virtual hsBool OpenForWriting(const char *path, plWAVHeader &header); |
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virtual UInt32 Write(UInt32 bytes, void *buffer); |
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virtual hsBool IsValid() { return fFileHandle != nil; } |
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protected: |
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char fFilename[512]; |
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FILE * fFileHandle; |
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plWAVHeader fHeader; |
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UInt32 fDataLength; |
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UInt32 fCurPosition; |
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void IError(const char *msg); |
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}; |
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#endif //_plcachedfilereader_h
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