Delphi下用Lame编码器把WAV转成MP3_lame

共9个文件

pas：3个

dll：1个

wav：1个

Lame_Enc

Lame

Encoder

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MP3Encoder_example_Lame.rar （9个子文件）

Example

testcase.wav 98KB

MainForm.dfm 671B

enMain.pas 14KB

lame_enc.dll 392KB

MP3export.pas 12KB

LameDLLInterface.htm 24KB

WAV2MP3.res 876B

MainForm.pas 741B

WAV2MP3.dpr 226B

<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="GENERATOR" content="Microsoft FrontPage Express 2.0"> <title>Lame-</title> </head> <body bgcolor="#FFFFFF">   Lame-enc DLL Interface version 1.32 (and above) (Lame engine version: 3.93 or higher) Programmers Manual The lame_enc.dll and this manual is copyright by Albert L Faber Originally the the DLL interface is modeled after the BladeEnc DLL interface which is copyrighted by Tord Jansson and Jukka Poikolainen This document and the DLL interface may be distributed freely as long as modifications are released under the LGPL license.   Homepage: <a href="http://www.cdex.n3.net">http://www.cdex.n3.net</a> E-mail: mailto: <a href="mailto:afaber@users.sourceforge.net">afaber@users.sourceforge.net</a> Distribution People and companies  who wants to distribute lame_enc.dll with their commercial products are free to do so as far as I'm concerned (LGPL license), but should be aware that lame_enc.dll might infringe certain MP3 related software patents held by Fraunhofer IIS in certain countries.   Disclaimer lame_enc.dll and this manual is distributed 'as is' with no warranty of any kind. The Author is not to be held responsible for the result of any use or misuse of this product.     Current Bugs and Limitations Although the interface is designed to be able to handle multiple parallel streams it can't be done yet due to limitations in the engine, only one stream is allowed.   Future Compatibility This interface should be compatible with all future versions of lame_enc.DLL without any need to recompile your programs. You should therefore not check the version number upon start and prevent users from running your program with a later version of lame_enc.DLL.   <hr> How to use the DLL 1. Fill in a <a href="#The BE_CONFIG Structure">BE_CONFIG </a>structure and send it to <a href="#beInitStream()">beInitStream()</a>. Make sure that BE_ERR_SUCCESSFUL is returned. 2. Reserve at least the amount of memory returned in dwBufferSize as your output buffer. 3. Call <a href="#beEncodeChunk()">beEncodeChunk()</a> until you've encoded everything you want. 4. Call <a href="#beDeinitStream()">beDeinitStream()</a> to make sure that all encoded data is flushed out before closing the stream. 5. Close the stream using <a href="#beCloseStream()">beCloseStream() </a> 6. Finally, call the <a href="#beWriteVBRHeader()">beWriteVBRHeader()</a> functions, to insert the INFO tag MP3 Header. This is an extension of the Xing VBR tag which is also used for CBR encodings. This call can only be omitted if the INFO tag was explicilty disabled in the BE_CONFIG Structure. A handy feature is the available <a href="#Lame_enc.dll debug option">Lame_enc.dll debug option</a>, which will dump the important lame internal settings to a text file.     Return Values See the header-file for a complete list of function return values. All functions should return BE_ERR_SUCCESSFUL unless something went wrong.   <hr> <h1><a name="Type definitions">Type definitions</a></h1> The DLL is by default compiled with the MS Visual C/C++ compiler, which has the following type definitions: <table border="0"> <tr> <td>Type </td> <td>Description</td> </tr> <tr> <td>CHAR</td> <td>signed char (8 bits)</td> </tr> <tr> <td>BYTE</td> <td>unsigned char (8 bits)</td> </tr> <tr> <td>SHORT</td> <td>signed short (16 bits)</td> </tr> <tr> <td>WORD</td> <td>unsigned short (16 bits)</td> </tr> <tr> <td>INT</td> <td>signed long (32 bits)</td> </tr> <tr> <td>LONG</td> <td>signed long (32 bits)</td> </tr> <tr> <td>BOOL</td> <td>signed long (32 bits) (YES, 32 bits for a one bit value) TRUE = 0 FALSE=-1</td> </tr> <tr> <td>DWORD</td> <td>unsigned long (32 bits)</td> </tr> <tr> <td>FLOAT</td> <td>floating point (32 bits)</td> </tr> <tr> <td>DOUBLE</td> <td>float point (64 bits)</td> </tr> <tr> <td>LPCSTR</td> <td>const char* (32 bits pointer to zero terminated character string)</td> </tr> </table> Within the lame_enc.dll All the structure elements are one byte alligned (due to backwards compatibility with BladEnc.DLL!   <hr> <h1><a name="The BE_CONFIG Structure">The BE_CONFIG Structure </a></h1> Currently there the BE_CONFIG structure has to varians, the old MP3 config structure that is truly compatible with the old BladeEnc interface, and the new defined LHV1 structure, which can set far more options in the lame encoder   <h2>The MP3 BE_CONFIG - structure (OBSOLETE)</h2> This is the old structure as it was originally defined by the BladeEnc.DLL interface. However, I do highly recommend to use the new Lame specific config structure, since it gives you more control over the Lame encoder settings. These are the members of the BE_CONFIG structure you need to fill in before you call beInitStream():   <table border="0"> <tr> <td>dwConfig</td> <td>Specifies what kind of output you want. Since only MP3 currently is supported you must set this to BE_CONFIG_MP3</td> </tr> <tr> <td>format.mp3.dwSampleRate     </td> <td>Samplerate in Hz for MP3 file. This can be set to either 32000, 44100 or 48000.</td> </tr> <tr> <td>format.mp3.byMode</td> <td>Stereomode for MP3 file. This can be either BE_MP3_MODE_STEREO, BE_MP3_MODE_DUALCHANNEL or BE_MP3_MODE_MONO.</td> </tr> <tr> <td>format.mp3.bitrate</td> <td>Bitrate (i.e. size) of MP3 file in kBit/s. Allowed bitrates are: 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 and 320.</td> </tr> <tr> <td>format.mp3.bCopyright</td> <td>If this is set to TRUE the Copyright bit in the MP3 stream will be set.</td> </tr> <tr> <td>format.mp3.bCRC</td> <td>Set this to TRUE in order to enable CRC-checksum in the bitstream.</td> </tr> <tr> <td>format.mp3.bOriginal</td> <td>If this is set to TRUE the Original bit in the MP3 stream will be set.</td> </tr> <tr> <td>format.mp3.bPrivate</td> <td>If this is set to TRUE the Private bit in the MP3 stream will be set.</td> </tr> </table>   <h2>The LHV1 BE_CONFIG - structure (recommended)</h2> These are the members of the LHV1 BE_CONFIG structure, you need to fill in before you call beInitStream(): <table border="0"> <tr> <td>dwConfig</td> <td>Specifies what kind of output you want. Since only MP3 currently is supported you must set this to BE_CONFIG_LAME</td> </tr> <tr> <td> </td> <td> </td>

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