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Added XAudio Player Re-factored code Auto detect format
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,191 @@ | ||
| /********************************************************* | ||
| * Copyright (C) VERTVER, 2018. All rights reserved. | ||
| * WinPlr - open-source WINAPI audio player. | ||
| * MIT-License | ||
| ********************************************************** | ||
| * Module Name: WinAudio file-reader | ||
| ********************************************************** | ||
| * WinFileReader.cpp | ||
| * File type checking | ||
| *********************************************************/ | ||
|
|
||
| #include "WinFileReader.h" | ||
| FILE* fileData; | ||
| PCM_DATA pcmData; | ||
|
|
||
| /*********************************************** | ||
| * freadNum(): | ||
| * Checking for bad number | ||
| ***********************************************/ | ||
| template | ||
| <typename T> T | ||
| freadNum( | ||
| FILE* f | ||
| ) | ||
| { | ||
| T value; | ||
| DO_EXIT(fread(&value, sizeof(value), 1, f) == 1, "Can't read file"); | ||
| return value; // no endian-swap for now... WAV is LE anyway... | ||
| } | ||
|
|
||
| /*********************************************** | ||
| * freadStr(): | ||
| * Checking for bad string | ||
| ***********************************************/ | ||
| std::string | ||
| freadStr( | ||
| FILE* f, | ||
| size_t len | ||
| ) | ||
| { | ||
| std::string s(len, '\0'); | ||
| DO_EXIT(fread(&s[0], 1, len, f) == len, "Can't read file"); | ||
| return s; | ||
| } | ||
|
|
||
| /*********************************************** | ||
| * ReadFmtChunk(): | ||
| * Reading FMT chunk with information | ||
| ***********************************************/ | ||
| PCM_DATA | ||
| ReadFmtChunk( | ||
| UINT uChunkLen | ||
| ) | ||
| { | ||
| WORD dwSampleBits = NULL; | ||
| DO_EXIT(uChunkLen >= 16, "Error type"); | ||
|
|
||
| WORD fmttag = freadNum<WORD>(fileData); | ||
| DO_EXIT(fmttag == 1 || fmttag == 3, "Error"); // IEEE or PCM | ||
|
|
||
| // check for FMT tag | ||
| switch (fmttag) | ||
| { | ||
| case 1: | ||
| pcmData.isFloat = FALSE; | ||
| case 3: | ||
| pcmData.isFloat = TRUE; | ||
| default: | ||
| break; | ||
| } | ||
|
|
||
| // check channels | ||
| WORD wChannels = freadNum<WORD>(fileData); | ||
| DO_EXIT(wChannels > 0, "No channels"); | ||
| pcmData.wChannels = wChannels; | ||
|
|
||
| // check sample rate | ||
| UINT dwSampleRate = freadNum<UINT>(fileData); | ||
| DO_EXIT(dwSampleRate > 0, "No sample rate"); | ||
| pcmData.dwSamplerate = dwSampleRate; | ||
|
|
||
| // byte and bitrate | ||
| UINT dwByteRate = freadNum<UINT>(fileData); | ||
| WORD wBlockAlign = freadNum<WORD>(fileData); | ||
|
|
||
| // count of bits and bytes | ||
| WORD wBits = freadNum<WORD>(fileData); | ||
| WORD wBytes = wBits / 8; | ||
|
|
||
| // compare all data | ||
| DO_EXIT(dwByteRate == dwSampleRate * wChannels * wBytes, "Error types"); | ||
| DO_EXIT(wBlockAlign == wChannels * wBytes, "Error block align"); | ||
|
|
||
| // 1: PCM - int | ||
| // 3: IEEE - float | ||
| if (fmttag == 1) | ||
| { | ||
| switch (wBits) | ||
| { | ||
| case 8: dwSampleBits = 8; break; | ||
| case 16: dwSampleBits = 16; break; | ||
| case 24: dwSampleBits = 24; break; | ||
| case 32: dwSampleBits = 32; break; | ||
| } | ||
| } | ||
| else | ||
| { | ||
| DO_EXIT(fmttag == 3, "No type"); | ||
| DO_EXIT(wBits == 32, "No type"); | ||
| } | ||
| if (uChunkLen > 16) | ||
| { | ||
| // compare with extented size | ||
| WORD dwExtentedSize = freadNum<WORD>(fileData); | ||
| DO_EXIT(uChunkLen == 18 + dwExtentedSize, "No chunk len"); | ||
| fseek(fileData, dwExtentedSize, SEEK_CUR); | ||
| } | ||
|
|
||
| // returnt this struct | ||
| pcmData.wBitrate = dwSampleBits; | ||
| return pcmData; | ||
| } | ||
|
|
||
| /*********************************************** | ||
| * GetFullFileType(): | ||
| * Return current type of file | ||
| ***********************************************/ | ||
| FILE_TYPE | ||
| FileReader::GetFullFileType( | ||
| LPCSTR lpString | ||
| ) | ||
| { | ||
| // open file with "read-only" rools | ||
| fileData = fopen(lpString, "r"); | ||
| DO_EXIT(fileData, "Can't open file"); | ||
|
|
||
| // if file is WAVE PCM - return | ||
| if (freadStr(fileData, 4) == "RIFF") | ||
| { | ||
| UINT wavechunksize = freadNum<UINT>(fileData); | ||
| DO_EXIT((freadStr(fileData, 4) == "WAVE"), "No wave"); | ||
| return WAV_FILE; | ||
| } | ||
| return UNKNOWN_FILE; | ||
| } | ||
|
|
||
| /*********************************************** | ||
| * ReadChunks(): | ||
| * Checking valid chunks | ||
| ***********************************************/ | ||
| VOID | ||
| FileReader::ReadChunks() | ||
| { | ||
| while (TRUE) | ||
| { | ||
| // set chunk name and chunk length | ||
| std::string chunkName = " "; | ||
| chunkName = freadStr(fileData, 4); | ||
| UINT chunkLen = freadNum<UINT>(fileData); | ||
|
|
||
| // if chunk include FMT data - read this | ||
| if (chunkName == "fmt ") | ||
| { | ||
| ReadFmtChunk(chunkLen); | ||
| } | ||
| else if (chunkName == "data") break; // else break cycle | ||
| else | ||
| { | ||
| DO_EXIT((fseek(fileData, chunkLen, SEEK_CUR) == NULL), "Can't seek file"); // skip chunk | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /*********************************************** | ||
| * GetFullFileInfo(): | ||
| * returnt full info about audiofile | ||
| ***********************************************/ | ||
| PCM_DATA | ||
| FileReader::GetFullFileInfo(LPCSTR lpPath) | ||
| { | ||
| FILE_TYPE eType; | ||
| eType = GetFullFileType(lpPath); | ||
| if (eType == WAV_FILE) | ||
| { | ||
| ReadChunks(); | ||
| free(fileData); | ||
| return pcmData; | ||
| } | ||
| DO_EXIT(eType, "Can't check format"); | ||
| return pcmData; | ||
| } |
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