1029 lines
32 KiB
C
1029 lines
32 KiB
C
/*
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* Blade DLL Interface for LAME.
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*
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* Copyright (c) 1999 - 2002 A.L. Faber
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <windows.h>
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#include <Windef.h>
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#include "BladeMP3EncDLL.h"
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#include <assert.h>
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#include <stdio.h>
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#include <lame/lame.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define Min(A, B) ((A) < (B) ? (A) : (B))
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#define Max(A, B) ((A) > (B) ? (A) : (B))
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#define _RELEASEDEBUG 0
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// lame_enc DLL version number
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const BYTE MAJORVERSION = 1;
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const BYTE MINORVERSION = 32;
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// Local variables
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static DWORD dwSampleBufferSize = 0;
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static HMODULE gs_hModule = NULL;
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static BOOL gs_bLogFile = FALSE;
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static lame_global_flags* gfp_save = NULL;
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// Local function prototypes
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static void dump_config(lame_global_flags* gfp);
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static void DebugPrintf(const char* pzFormat, ...);
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static void DispErr(wchar_t const* strErr);
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static void PresetOptions(lame_global_flags* gfp, LONG myPreset);
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static void DebugPrintf(const char* pzFormat, ...)
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{
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char szBuffer[1024] = { '\0', };
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char szFileName[MAX_PATH + 1] = { '\0', };
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va_list ap;
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// Get the full module (DLL) file name
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GetModuleFileNameA(gs_hModule,
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szFileName,
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sizeof(szFileName));
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// change file name extention
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szFileName[strlen(szFileName) - 3] = 't';
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szFileName[strlen(szFileName) - 2] = 'x';
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szFileName[strlen(szFileName) - 1] = 't';
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// start at beginning of the list
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va_start(ap, pzFormat);
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// copy it to the string buffer
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_vsnprintf(szBuffer, sizeof(szBuffer), pzFormat, ap);
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// log it to the file?
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if (gs_bLogFile)
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{
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FILE* fp = NULL;
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// try to open the log file
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fp = fopen(szFileName, "a+");
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// check file open result
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if (fp)
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{
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// write string to the file
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fputs(szBuffer, fp);
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// close the file
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fclose(fp);
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}
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}
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#if defined _DEBUG || defined _RELEASEDEBUG
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OutputDebugStringA(szBuffer);
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#endif
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va_end(ap);
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}
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static void PresetOptions(lame_global_flags* gfp, LONG myPreset)
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{
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switch (myPreset)
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{
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/*-1*/case LQP_NOPRESET:
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break;
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/*0*/case LQP_NORMAL_QUALITY:
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/* lame_set_quality( gfp, 5 );*/
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break;
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/*1*/case LQP_LOW_QUALITY:
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lame_set_quality(gfp, 9);
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break;
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/*2*/case LQP_HIGH_QUALITY:
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lame_set_quality(gfp, 2);
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break;
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/*3*/case LQP_VOICE_QUALITY: // --voice flag for experimental voice mode
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lame_set_mode(gfp, MONO);
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lame_set_preset(gfp, 56);
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break;
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/*4*/case LQP_R3MIX: // --R3MIX
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lame_set_preset(gfp, R3MIX);
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break;
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/*5*/case LQP_VERYHIGH_QUALITY:
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lame_set_quality(gfp, 0);
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break;
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/*6*/case LQP_STANDARD: // --PRESET STANDARD
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lame_set_preset(gfp, STANDARD);
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break;
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/*7*/case LQP_FAST_STANDARD: // --PRESET FAST STANDARD
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lame_set_preset(gfp, STANDARD_FAST);
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break;
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/*8*/case LQP_EXTREME: // --PRESET EXTREME
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lame_set_preset(gfp, EXTREME);
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break;
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/*9*/case LQP_FAST_EXTREME: // --PRESET FAST EXTREME:
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lame_set_preset(gfp, EXTREME_FAST);
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break;
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/*10*/case LQP_INSANE: // --PRESET INSANE
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lame_set_preset(gfp, INSANE);
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break;
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/*11*/case LQP_ABR: // --PRESET ABR
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// handled in beInitStream
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break;
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/*12*/case LQP_CBR: // --PRESET CBR
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// handled in beInitStream
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break;
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/*13*/case LQP_MEDIUM: // --PRESET MEDIUM
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lame_set_preset(gfp, MEDIUM);
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break;
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/*14*/case LQP_FAST_MEDIUM: // --PRESET FAST MEDIUM
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lame_set_preset(gfp, MEDIUM_FAST);
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break;
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/*1000*/case LQP_PHONE:
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lame_set_mode(gfp, MONO);
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lame_set_preset(gfp, 16);
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break;
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/*2000*/case LQP_SW:
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lame_set_mode(gfp, MONO);
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lame_set_preset(gfp, 24);
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break;
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/*3000*/case LQP_AM:
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lame_set_mode(gfp, MONO);
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lame_set_preset(gfp, 40);
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break;
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/*4000*/case LQP_FM:
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lame_set_preset(gfp, 112);
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break;
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/*5000*/case LQP_VOICE:
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lame_set_mode(gfp, MONO);
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lame_set_preset(gfp, 56);
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break;
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/*6000*/case LQP_RADIO:
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lame_set_preset(gfp, 112);
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break;
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/*7000*/case LQP_TAPE:
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lame_set_preset(gfp, 112);
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break;
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/*8000*/case LQP_HIFI:
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lame_set_preset(gfp, 160);
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break;
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/*9000*/case LQP_CD:
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lame_set_preset(gfp, 192);
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break;
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/*10000*/case LQP_STUDIO:
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lame_set_preset(gfp, 256);
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break;
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}
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}
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__declspec(dllexport) BE_ERR beInitStream(PBE_CONFIG pbeConfig, PDWORD dwSamples, PDWORD dwBufferSize, PHBE_STREAM phbeStream)
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{
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int actual_bitrate;
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//2001-12-18
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BE_CONFIG lameConfig = { 0, };
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int nInitReturn = 0;
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lame_global_flags* gfp = NULL;
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// Init the global flags structure
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gfp = lame_init();
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*phbeStream = (HBE_STREAM)gfp;
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// clear out structure
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memset(&lameConfig, 0x00, CURRENT_STRUCT_SIZE);
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// Check if this is a regular BLADE_ENCODER header
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if (pbeConfig->dwConfig != BE_CONFIG_LAME)
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{
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int nCRC = pbeConfig->format.mp3.bCRC;
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int nVBR = (nCRC >> 12) & 0x0F;
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// Copy parameter from old Blade structure
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lameConfig.format.LHV1.dwSampleRate = pbeConfig->format.mp3.dwSampleRate;
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//for low bitrates, LAME will automatically downsample for better
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//sound quality. Forcing output samplerate = input samplerate is not a good idea
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//unless the user specifically requests it:
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//lameConfig.format.LHV1.dwReSampleRate=pbeConfig->format.mp3.dwSampleRate;
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lameConfig.format.LHV1.nMode = (pbeConfig->format.mp3.byMode & 0x0F);
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lameConfig.format.LHV1.dwBitrate = pbeConfig->format.mp3.wBitrate;
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lameConfig.format.LHV1.bPrivate = pbeConfig->format.mp3.bPrivate;
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lameConfig.format.LHV1.bOriginal = pbeConfig->format.mp3.bOriginal;
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lameConfig.format.LHV1.bCRC = nCRC & 0x01;
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lameConfig.format.LHV1.bCopyright = pbeConfig->format.mp3.bCopyright;
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// Fill out the unknowns
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lameConfig.format.LHV1.dwStructSize = CURRENT_STRUCT_SIZE;
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lameConfig.format.LHV1.dwStructVersion = CURRENT_STRUCT_VERSION;
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// Get VBR setting from fourth nibble
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if (nVBR > 0)
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{
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lameConfig.format.LHV1.bWriteVBRHeader = TRUE;
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lameConfig.format.LHV1.bEnableVBR = TRUE;
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lameConfig.format.LHV1.nVBRQuality = nVBR - 1;
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}
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// Get Quality from third nibble
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lameConfig.format.LHV1.nPreset = ((nCRC >> 8) & 0x0F);
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}
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else
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{
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// Copy the parameters
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memcpy(&lameConfig, pbeConfig, pbeConfig->format.LHV1.dwStructSize);
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}
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// --------------- Set arguments to LAME encoder -------------------------
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// Set input sample frequency
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lame_set_in_samplerate(gfp, lameConfig.format.LHV1.dwSampleRate);
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// disable INFO/VBR tag by default.
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// if this tag is used, the calling program must call beWriteVBRTag()
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// after encoding. But the original DLL documentation does not
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// require the
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// app to call beWriteVBRTag() unless they have specifically
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// set LHV1.bWriteVBRHeader=TRUE. Thus the default setting should
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// be disabled.
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lame_set_bWriteVbrTag(gfp, 0);
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//2001-12-18 Dibrom's ABR preset stuff
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if (lameConfig.format.LHV1.nPreset == LQP_ABR) // --ALT-PRESET ABR
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{
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actual_bitrate = lameConfig.format.LHV1.dwVbrAbr_bps / 1000;
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// limit range
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if (actual_bitrate > 320)
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{
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actual_bitrate = 320;
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}
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if (actual_bitrate < 8)
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{
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actual_bitrate = 8;
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}
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lame_set_preset(gfp, actual_bitrate);
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}
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// end Dibrom's ABR preset 2001-12-18 ****** START OF CBR
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if (lameConfig.format.LHV1.nPreset == LQP_CBR) // --ALT-PRESET CBR
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{
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actual_bitrate = lameConfig.format.LHV1.dwBitrate;
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lame_set_preset(gfp, actual_bitrate);
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lame_set_VBR(gfp, vbr_off);
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}
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// end Dibrom's CBR preset 2001-12-18
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// The following settings only used when preset is not one of the LAME QUALITY Presets
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if ((int)lameConfig.format.LHV1.nPreset < (int)LQP_STANDARD)
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{
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switch (lameConfig.format.LHV1.nMode)
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{
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case BE_MP3_MODE_STEREO:
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lame_set_mode(gfp, STEREO);
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lame_set_num_channels(gfp, 2);
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break;
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case BE_MP3_MODE_JSTEREO:
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lame_set_mode(gfp, JOINT_STEREO);
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//lame_set_force_ms( gfp, bForceMS ); // no check box to force this?
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lame_set_num_channels(gfp, 2);
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break;
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case BE_MP3_MODE_MONO:
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lame_set_mode(gfp, MONO);
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lame_set_num_channels(gfp, 1);
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break;
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case BE_MP3_MODE_DUALCHANNEL:
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lame_set_mode(gfp, DUAL_CHANNEL);
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lame_set_num_channels(gfp, 2);
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break;
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default:
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{
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DebugPrintf("Invalid lameConfig.format.LHV1.nMode, value is %d\n", lameConfig.format.LHV1.nMode);
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return BE_ERR_INVALID_FORMAT_PARAMETERS;
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}
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}
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if (lameConfig.format.LHV1.bEnableVBR)
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{
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/* set VBR quality */
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lame_set_VBR_q(gfp, lameConfig.format.LHV1.nVBRQuality);
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/* select proper VBR method */
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switch (lameConfig.format.LHV1.nVbrMethod)
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{
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case VBR_METHOD_NONE:
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lame_set_VBR(gfp, vbr_off);
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break;
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case VBR_METHOD_DEFAULT:
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lame_set_VBR(gfp, vbr_default);
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break;
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case VBR_METHOD_OLD:
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lame_set_VBR(gfp, vbr_rh);
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break;
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case VBR_METHOD_MTRH:
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case VBR_METHOD_NEW:
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/*
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* the --vbr-mtrh commandline switch is obsolete.
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* now --vbr-mtrh is known as --vbr-new
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*/
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lame_set_VBR(gfp, vbr_mtrh);
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break;
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case VBR_METHOD_ABR:
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lame_set_VBR(gfp, vbr_abr);
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break;
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default:
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/* unsupported VBR method */
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assert(FALSE);
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}
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}
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else
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{
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/* use CBR encoding method, so turn off VBR */
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lame_set_VBR(gfp, vbr_off);
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}
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/* Set bitrate. (CDex users always specify bitrate=Min bitrate when using VBR) */
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lame_set_brate(gfp, lameConfig.format.LHV1.dwBitrate);
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/* check if we have to use ABR, in order to backwards compatible, this
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* condition should still be checked indepedent of the nVbrMethod method
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*/
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if (lameConfig.format.LHV1.dwVbrAbr_bps > 0)
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{
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/* set VBR method to ABR */
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lame_set_VBR(gfp, vbr_abr);
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/* calculate to kbps, round to nearest kbps */
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lame_set_VBR_mean_bitrate_kbps(gfp, (lameConfig.format.LHV1.dwVbrAbr_bps + 500) / 1000);
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/* limit range */
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if (lame_get_VBR_mean_bitrate_kbps(gfp) > 320)
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{
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lame_set_VBR_mean_bitrate_kbps(gfp, 320);
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}
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if (lame_get_VBR_mean_bitrate_kbps(gfp) < 8)
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{
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lame_set_VBR_mean_bitrate_kbps(gfp, 8);
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}
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}
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}
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// First set all the preset options
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if (LQP_NOPRESET != lameConfig.format.LHV1.nPreset)
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{
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PresetOptions(gfp, lameConfig.format.LHV1.nPreset);
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}
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// Set frequency resampling rate, if specified
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if (lameConfig.format.LHV1.dwReSampleRate > 0)
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{
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lame_set_out_samplerate(gfp, lameConfig.format.LHV1.dwReSampleRate);
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}
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switch (lameConfig.format.LHV1.nMode)
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{
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case BE_MP3_MODE_MONO:
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lame_set_mode(gfp, MONO);
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lame_set_num_channels(gfp, 1);
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break;
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default:
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break;
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}
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// Use strict ISO encoding?
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lame_set_strict_ISO(gfp, (lameConfig.format.LHV1.bStrictIso) ? 1 : 0);
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// Set copyright flag?
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if (lameConfig.format.LHV1.bCopyright)
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{
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lame_set_copyright(gfp, 1);
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}
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// Do we have to tag it as non original
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if (!lameConfig.format.LHV1.bOriginal)
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{
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lame_set_original(gfp, 0);
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}
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else
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{
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lame_set_original(gfp, 1);
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}
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// Add CRC?
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if (lameConfig.format.LHV1.bCRC)
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{
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lame_set_error_protection(gfp, 1);
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}
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else
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{
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lame_set_error_protection(gfp, 0);
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}
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// Set private bit?
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if (lameConfig.format.LHV1.bPrivate)
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{
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lame_set_extension(gfp, 1);
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}
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else
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{
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lame_set_extension(gfp, 0);
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}
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// Set VBR min bitrate, if specified
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if (lameConfig.format.LHV1.dwBitrate > 0)
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{
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lame_set_VBR_min_bitrate_kbps(gfp, lameConfig.format.LHV1.dwBitrate);
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}
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// Set Maxbitrate, if specified
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if (lameConfig.format.LHV1.dwMaxBitrate > 0)
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{
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lame_set_VBR_max_bitrate_kbps(gfp, lameConfig.format.LHV1.dwMaxBitrate);
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}
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// Set bit resovoir option
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if (lameConfig.format.LHV1.bNoRes)
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{
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lame_set_disable_reservoir(gfp, 1);
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}
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// check if the VBR tag is required
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if (lameConfig.format.LHV1.bWriteVBRHeader)
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{
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lame_set_bWriteVbrTag(gfp, 1);
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}
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else
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{
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lame_set_bWriteVbrTag(gfp, 0);
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}
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// Override Quality setting, use HIGHBYTE = NOT LOWBYTE to be backwards compatible
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if ((lameConfig.format.LHV1.nQuality & 0xFF) ==
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((~(lameConfig.format.LHV1.nQuality >> 8)) & 0xFF))
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{
|
|
lame_set_quality(gfp, lameConfig.format.LHV1.nQuality & 0xFF);
|
|
}
|
|
|
|
if (0 != (nInitReturn = lame_init_params(gfp)))
|
|
{
|
|
return nInitReturn;
|
|
}
|
|
|
|
//LAME encoding call will accept any number of samples.
|
|
if (0 == lame_get_version(gfp))
|
|
{
|
|
// For MPEG-II, only 576 samples per frame per channel
|
|
*dwSamples = 576 * lame_get_num_channels(gfp);
|
|
}
|
|
else
|
|
{
|
|
// For MPEG-I, 1152 samples per frame per channel
|
|
*dwSamples = 1152 * lame_get_num_channels(gfp);
|
|
}
|
|
|
|
// Set the input sample buffer size, so we know what we can expect
|
|
dwSampleBufferSize = *dwSamples;
|
|
|
|
// Set MP3 buffer size, conservative estimate
|
|
*dwBufferSize = (DWORD)(1.25 * (*dwSamples / lame_get_num_channels(gfp)) + 7200);
|
|
|
|
// For debugging purposes
|
|
dump_config(gfp);
|
|
|
|
// Everything went OK, thus return SUCCESSFUL
|
|
return BE_ERR_SUCCESSFUL;
|
|
}
|
|
|
|
|
|
|
|
__declspec(dllexport) BE_ERR beFlushNoGap(HBE_STREAM hbeStream, PBYTE pOutput, PDWORD pdwOutput)
|
|
{
|
|
int nOutputSamples = 0;
|
|
|
|
lame_global_flags* gfp = (lame_global_flags*)hbeStream;
|
|
|
|
// Init the global flags structure
|
|
nOutputSamples = lame_encode_flush_nogap(gfp, pOutput, LAME_MAXMP3BUFFER);
|
|
|
|
if (nOutputSamples < 0)
|
|
{
|
|
*pdwOutput = 0;
|
|
return BE_ERR_BUFFER_TOO_SMALL;
|
|
}
|
|
else
|
|
{
|
|
*pdwOutput = nOutputSamples;
|
|
}
|
|
|
|
return BE_ERR_SUCCESSFUL;
|
|
}
|
|
|
|
__declspec(dllexport) BE_ERR beDeinitStream(HBE_STREAM hbeStream, PBYTE pOutput, PDWORD pdwOutput)
|
|
{
|
|
int nOutputSamples = 0;
|
|
|
|
lame_global_flags* gfp = (lame_global_flags*)hbeStream;
|
|
|
|
nOutputSamples = lame_encode_flush(gfp, pOutput, 0);
|
|
|
|
if (nOutputSamples < 0)
|
|
{
|
|
*pdwOutput = 0;
|
|
return BE_ERR_BUFFER_TOO_SMALL;
|
|
}
|
|
else
|
|
{
|
|
*pdwOutput = nOutputSamples;
|
|
}
|
|
|
|
return BE_ERR_SUCCESSFUL;
|
|
}
|
|
|
|
|
|
__declspec(dllexport) BE_ERR beCloseStream(HBE_STREAM hbeStream)
|
|
{
|
|
lame_global_flags* gfp = (lame_global_flags*)hbeStream;
|
|
|
|
// lame will be close in VbrWriteTag function
|
|
if (!lame_get_bWriteVbrTag(gfp))
|
|
{
|
|
// clean up of allocated memory
|
|
lame_close(gfp);
|
|
|
|
gfp_save = NULL;
|
|
}
|
|
else
|
|
{
|
|
gfp_save = (lame_global_flags*)hbeStream;
|
|
}
|
|
|
|
// DeInit encoder
|
|
return BE_ERR_SUCCESSFUL;
|
|
}
|
|
|
|
|
|
|
|
__declspec(dllexport) VOID beVersion(PBE_VERSION pbeVersion)
|
|
{
|
|
// DLL Release date
|
|
char lpszDate[20] = { '\0', };
|
|
char lpszTemp[5] = { '\0', };
|
|
lame_version_t lv = { 0, };
|
|
|
|
|
|
// Set DLL interface version
|
|
pbeVersion->byDLLMajorVersion = MAJORVERSION;
|
|
pbeVersion->byDLLMinorVersion = MINORVERSION;
|
|
|
|
get_lame_version_numerical(&lv);
|
|
|
|
// Set Engine version number (Same as Lame version)
|
|
pbeVersion->byMajorVersion = (BYTE)lv.major;
|
|
pbeVersion->byMinorVersion = (BYTE)lv.minor;
|
|
pbeVersion->byAlphaLevel = (BYTE)lv.alpha;
|
|
pbeVersion->byBetaLevel = (BYTE)lv.beta;
|
|
|
|
#ifdef MMX_choose_table
|
|
pbeVersion->byMMXEnabled = 1;
|
|
#else
|
|
pbeVersion->byMMXEnabled = 0;
|
|
#endif
|
|
|
|
memset(pbeVersion->btReserved, 0, sizeof(pbeVersion->btReserved));
|
|
|
|
// Get compilation date
|
|
strcpy(lpszDate, __DATE__);
|
|
|
|
// Get the first three character, which is the month
|
|
strncpy(lpszTemp, lpszDate, 3);
|
|
lpszTemp[3] = '\0';
|
|
pbeVersion->byMonth = 1;
|
|
|
|
// Set month
|
|
if (strcmp(lpszTemp, "Jan") == 0) pbeVersion->byMonth = 1;
|
|
if (strcmp(lpszTemp, "Feb") == 0) pbeVersion->byMonth = 2;
|
|
if (strcmp(lpszTemp, "Mar") == 0) pbeVersion->byMonth = 3;
|
|
if (strcmp(lpszTemp, "Apr") == 0) pbeVersion->byMonth = 4;
|
|
if (strcmp(lpszTemp, "May") == 0) pbeVersion->byMonth = 5;
|
|
if (strcmp(lpszTemp, "Jun") == 0) pbeVersion->byMonth = 6;
|
|
if (strcmp(lpszTemp, "Jul") == 0) pbeVersion->byMonth = 7;
|
|
if (strcmp(lpszTemp, "Aug") == 0) pbeVersion->byMonth = 8;
|
|
if (strcmp(lpszTemp, "Sep") == 0) pbeVersion->byMonth = 9;
|
|
if (strcmp(lpszTemp, "Oct") == 0) pbeVersion->byMonth = 10;
|
|
if (strcmp(lpszTemp, "Nov") == 0) pbeVersion->byMonth = 11;
|
|
if (strcmp(lpszTemp, "Dec") == 0) pbeVersion->byMonth = 12;
|
|
|
|
// Get day of month string (char [4..5])
|
|
pbeVersion->byDay = (BYTE)atoi(lpszDate + 4);
|
|
|
|
// Get year of compilation date (char [7..10])
|
|
pbeVersion->wYear = (WORD)atoi(lpszDate + 7);
|
|
|
|
memset(pbeVersion->zHomepage, 0x00, BE_MAX_HOMEPAGE);
|
|
|
|
strcpy(pbeVersion->zHomepage, "http://www.mp3dev.org/");
|
|
}
|
|
|
|
__declspec(dllexport) BE_ERR beEncodeChunk(HBE_STREAM hbeStream, DWORD nSamples,
|
|
PSHORT pSamples, PBYTE pOutput, PDWORD pdwOutput)
|
|
{
|
|
// Encode it
|
|
int dwSamples;
|
|
int nOutputSamples = 0;
|
|
lame_global_flags* gfp = (lame_global_flags*)hbeStream;
|
|
|
|
dwSamples = nSamples / lame_get_num_channels(gfp);
|
|
|
|
// old versions of lame_enc.dll required exactly 1152 samples
|
|
// and worked even if nSamples accidently set to 2304
|
|
// simulate this behavoir:
|
|
if (1 == lame_get_num_channels(gfp) && nSamples == 2304)
|
|
{
|
|
dwSamples /= 2;
|
|
}
|
|
|
|
|
|
if (1 == lame_get_num_channels(gfp))
|
|
{
|
|
nOutputSamples = lame_encode_buffer(gfp, pSamples, pSamples, dwSamples, pOutput, 0);
|
|
}
|
|
else
|
|
{
|
|
nOutputSamples = lame_encode_buffer_interleaved(gfp, pSamples, dwSamples, pOutput, 0);
|
|
}
|
|
|
|
|
|
if (nOutputSamples < 0)
|
|
{
|
|
*pdwOutput = 0;
|
|
return BE_ERR_BUFFER_TOO_SMALL;
|
|
}
|
|
else
|
|
{
|
|
*pdwOutput = (DWORD)nOutputSamples;
|
|
}
|
|
|
|
return BE_ERR_SUCCESSFUL;
|
|
}
|
|
|
|
|
|
// accept floating point audio samples, scaled to the range of a signed 16-bit
|
|
// integer (within +/- 32768), in non-interleaved channels -- DSPguru, jd
|
|
__declspec(dllexport) BE_ERR beEncodeChunkFloatS16NI(HBE_STREAM hbeStream, DWORD nSamples,
|
|
PFLOAT buffer_l, PFLOAT buffer_r, PBYTE pOutput, PDWORD pdwOutput)
|
|
{
|
|
int nOutputSamples;
|
|
lame_global_flags* gfp = (lame_global_flags*)hbeStream;
|
|
|
|
nOutputSamples = lame_encode_buffer_float(gfp, buffer_l, buffer_r, nSamples, pOutput, 0);
|
|
|
|
if (nOutputSamples >= 0)
|
|
{
|
|
*pdwOutput = (DWORD)nOutputSamples;
|
|
}
|
|
else
|
|
{
|
|
*pdwOutput = 0;
|
|
return BE_ERR_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
return BE_ERR_SUCCESSFUL;
|
|
}
|
|
|
|
static int
|
|
maybeSyncWord(FILE* fpStream)
|
|
{
|
|
unsigned char mp3_frame_header[4];
|
|
size_t nbytes = fread(mp3_frame_header, 1, sizeof(mp3_frame_header), fpStream);
|
|
if (nbytes != sizeof(mp3_frame_header)) {
|
|
return -1;
|
|
}
|
|
if (mp3_frame_header[0] != 0xffu) {
|
|
return -1; /* doesn't look like a sync word */
|
|
}
|
|
if ((mp3_frame_header[1] & 0xE0u) != 0xE0u) {
|
|
return -1; /* doesn't look like a sync word */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
skipId3v2(FILE* fpStream, size_t lametag_frame_size)
|
|
{
|
|
size_t nbytes;
|
|
size_t id3v2TagSize = 0;
|
|
unsigned char id3v2Header[10];
|
|
|
|
/* seek to the beginning of the stream */
|
|
if (fseek(fpStream, 0, SEEK_SET) != 0) {
|
|
return -2; /* not seekable, abort */
|
|
}
|
|
/* read 10 bytes in case there's an ID3 version 2 header here */
|
|
nbytes = fread(id3v2Header, 1, sizeof(id3v2Header), fpStream);
|
|
if (nbytes != sizeof(id3v2Header)) {
|
|
return -3; /* not readable, maybe opened Write-Only */
|
|
}
|
|
/* does the stream begin with the ID3 version 2 file identifier? */
|
|
if (!strncmp((char*)id3v2Header, "ID3", 3)) {
|
|
/* the tag size (minus the 10-byte header) is encoded into four
|
|
* bytes where the most significant bit is clear in each byte
|
|
*/
|
|
id3v2TagSize = (((id3v2Header[6] & 0x7f) << 21)
|
|
| ((id3v2Header[7] & 0x7f) << 14)
|
|
| ((id3v2Header[8] & 0x7f) << 7)
|
|
| (id3v2Header[9] & 0x7f))
|
|
+ sizeof id3v2Header;
|
|
}
|
|
/* Seek to the beginning of the audio stream */
|
|
if (fseek(fpStream, id3v2TagSize, SEEK_SET) != 0) {
|
|
return -2;
|
|
}
|
|
if (maybeSyncWord(fpStream) != 0) {
|
|
return -1;
|
|
}
|
|
if (fseek(fpStream, id3v2TagSize + lametag_frame_size, SEEK_SET) != 0) {
|
|
return -2;
|
|
}
|
|
if (maybeSyncWord(fpStream) != 0) {
|
|
return -1;
|
|
}
|
|
/* OK, it seems we found our LAME-Tag/Xing frame again */
|
|
/* Seek to the beginning of the audio stream */
|
|
if (fseek(fpStream, id3v2TagSize, SEEK_SET) != 0) {
|
|
return -2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static BE_ERR
|
|
updateLameTagFrame(lame_global_flags* gfp, FILE* fpStream)
|
|
{
|
|
size_t n = lame_get_lametag_frame(gfp, 0, 0); /* ask for bufer size */
|
|
|
|
if (n > 0)
|
|
{
|
|
unsigned char* buffer = 0;
|
|
size_t m = 1;
|
|
|
|
if (0 != skipId3v2(fpStream, n))
|
|
{
|
|
DispErr("Error updating LAME-tag frame:\n\n"
|
|
"can't locate old frame\n");
|
|
return BE_ERR_INVALID_FORMAT_PARAMETERS;
|
|
}
|
|
|
|
buffer = (unsigned char*)malloc(n);
|
|
|
|
if (buffer == 0)
|
|
{
|
|
DispErr("Error updating LAME-tag frame:\n\n"
|
|
"can't allocate frame buffer\n");
|
|
return BE_ERR_INVALID_FORMAT_PARAMETERS;
|
|
}
|
|
|
|
/* Put it all to disk again */
|
|
n = lame_get_lametag_frame(gfp, buffer, n);
|
|
if (n > 0)
|
|
{
|
|
m = fwrite(buffer, n, 1, fpStream);
|
|
}
|
|
free(buffer);
|
|
|
|
if (m != 1)
|
|
{
|
|
DispErr("Error updating LAME-tag frame:\n\n"
|
|
"couldn't write frame into file\n");
|
|
return BE_ERR_INVALID_FORMAT_PARAMETERS;
|
|
}
|
|
}
|
|
return BE_ERR_SUCCESSFUL;
|
|
}
|
|
|
|
__declspec(dllexport) BE_ERR beWriteInfoTag(HBE_STREAM hbeStream,
|
|
LPCSTR lpszFileName)
|
|
{
|
|
FILE* fpStream = NULL;
|
|
BE_ERR beResult = BE_ERR_SUCCESSFUL;
|
|
|
|
lame_global_flags* gfp = (lame_global_flags*)hbeStream;
|
|
|
|
if (NULL != gfp)
|
|
{
|
|
// Do we have to write the VBR tag?
|
|
if (lame_get_bWriteVbrTag(gfp))
|
|
{
|
|
// Try to open the file
|
|
fpStream = fopen(lpszFileName, "rb+");
|
|
|
|
// Check file open result
|
|
if (NULL == fpStream)
|
|
{
|
|
beResult = BE_ERR_INVALID_FORMAT_PARAMETERS;
|
|
DispErr("Error updating LAME-tag frame:\n\n"
|
|
"can't open file for reading and writing\n");
|
|
}
|
|
else
|
|
{
|
|
beResult = updateLameTagFrame(gfp, fpStream);
|
|
|
|
// Close the file stream
|
|
fclose(fpStream);
|
|
}
|
|
}
|
|
|
|
// clean up of allocated memory
|
|
lame_close(gfp);
|
|
}
|
|
else
|
|
{
|
|
beResult = BE_ERR_INVALID_FORMAT_PARAMETERS;
|
|
}
|
|
|
|
// return result
|
|
return beResult;
|
|
}
|
|
|
|
// for backwards compatiblity
|
|
__declspec(dllexport) BE_ERR beWriteVBRHeader(LPCSTR lpszFileName)
|
|
{
|
|
return beWriteInfoTag((HBE_STREAM)gfp_save, lpszFileName);
|
|
}
|
|
|
|
|
|
BOOL APIENTRY DllMain(HANDLE hModule,
|
|
DWORD ul_reason_for_call,
|
|
LPVOID lpReserved)
|
|
{
|
|
(void)lpReserved;
|
|
gs_hModule = (HMODULE)hModule;
|
|
|
|
switch (ul_reason_for_call)
|
|
{
|
|
case DLL_PROCESS_ATTACH:
|
|
// Enable debug/logging?
|
|
gs_bLogFile = GetPrivateProfileIntA("Debug", "WriteLogFile", gs_bLogFile, "lame_enc.ini");
|
|
break;
|
|
case DLL_THREAD_ATTACH:
|
|
break;
|
|
case DLL_THREAD_DETACH:
|
|
break;
|
|
case DLL_PROCESS_DETACH:
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
static void dump_config(lame_global_flags* gfp)
|
|
{
|
|
DebugPrintf("\n\nLame_enc configuration options:\n");
|
|
DebugPrintf("==========================================================\n");
|
|
|
|
DebugPrintf("version =%d\n", lame_get_version(gfp));
|
|
DebugPrintf("Layer =3\n");
|
|
DebugPrintf("mode =");
|
|
switch (lame_get_mode(gfp))
|
|
{
|
|
case STEREO: DebugPrintf("Stereo\n"); break;
|
|
case JOINT_STEREO: DebugPrintf("Joint-Stereo\n"); break;
|
|
case DUAL_CHANNEL: DebugPrintf("Forced Stereo\n"); break;
|
|
case MONO: DebugPrintf("Mono\n"); break;
|
|
case NOT_SET: /* FALLTROUGH */
|
|
default: DebugPrintf("Error (unknown)\n"); break;
|
|
}
|
|
|
|
DebugPrintf("Input sample rate =%.1f kHz\n", lame_get_in_samplerate(gfp) / 1000.0);
|
|
DebugPrintf("Output sample rate =%.1f kHz\n", lame_get_out_samplerate(gfp) / 1000.0);
|
|
|
|
DebugPrintf("bitrate =%d kbps\n", lame_get_brate(gfp));
|
|
DebugPrintf("Quality Setting =%d\n", lame_get_quality(gfp));
|
|
|
|
DebugPrintf("Low pass frequency =%d\n", lame_get_lowpassfreq(gfp));
|
|
DebugPrintf("Low pass width =%d\n", lame_get_lowpasswidth(gfp));
|
|
|
|
DebugPrintf("High pass frequency =%d\n", lame_get_highpassfreq(gfp));
|
|
DebugPrintf("High pass width =%d\n", lame_get_highpasswidth(gfp));
|
|
|
|
DebugPrintf("No short blocks =%d\n", lame_get_no_short_blocks(gfp));
|
|
DebugPrintf("Force short blocks =%d\n", lame_get_force_short_blocks(gfp));
|
|
|
|
DebugPrintf("de-emphasis =%d\n", lame_get_emphasis(gfp));
|
|
DebugPrintf("private flag =%d\n", lame_get_extension(gfp));
|
|
|
|
DebugPrintf("copyright flag =%d\n", lame_get_copyright(gfp));
|
|
DebugPrintf("original flag =%d\n", lame_get_original(gfp));
|
|
DebugPrintf("CRC =%s\n", lame_get_error_protection(gfp) ? "on" : "off");
|
|
DebugPrintf("Fast mode =%s\n", (lame_get_quality(gfp)) ? "enabled" : "disabled");
|
|
DebugPrintf("Force mid/side stereo =%s\n", (lame_get_force_ms(gfp)) ? "enabled" : "disabled");
|
|
DebugPrintf("Disable Reservoir =%d\n", lame_get_disable_reservoir(gfp));
|
|
DebugPrintf("Allow diff-short =%d\n", lame_get_allow_diff_short(gfp));
|
|
DebugPrintf("Interchannel masking =%f\n", lame_get_interChRatio(gfp));
|
|
DebugPrintf("Strict ISO Encoding =%s\n", (lame_get_strict_ISO(gfp)) ? "Yes" : "No");
|
|
DebugPrintf("Scale =%5.2f\n", lame_get_scale(gfp));
|
|
|
|
DebugPrintf("VBR =%s, VBR_q =%d, VBR method =",
|
|
(lame_get_VBR(gfp) != vbr_off) ? "enabled" : "disabled",
|
|
lame_get_VBR_q(gfp));
|
|
|
|
switch (lame_get_VBR(gfp))
|
|
{
|
|
case vbr_off: DebugPrintf("vbr_off\n"); break;
|
|
case vbr_mt: DebugPrintf("vbr_mt \n"); break;
|
|
case vbr_rh: DebugPrintf("vbr_rh \n"); break;
|
|
case vbr_mtrh: DebugPrintf("vbr_mtrh \n"); break;
|
|
case vbr_abr:
|
|
DebugPrintf("vbr_abr (average bitrate %d kbps)\n", lame_get_VBR_mean_bitrate_kbps(gfp));
|
|
break;
|
|
default:
|
|
DebugPrintf("error, unknown VBR setting\n");
|
|
break;
|
|
}
|
|
|
|
DebugPrintf("Vbr Min bitrate =%d kbps\n", lame_get_VBR_min_bitrate_kbps(gfp));
|
|
DebugPrintf("Vbr Max bitrate =%d kbps\n", lame_get_VBR_max_bitrate_kbps(gfp));
|
|
|
|
DebugPrintf("Write VBR Header =%s\n", (lame_get_bWriteVbrTag(gfp)) ? "Yes" : "No");
|
|
DebugPrintf("VBR Hard min =%d\n", lame_get_VBR_hard_min(gfp));
|
|
|
|
DebugPrintf("ATH Only =%d\n", lame_get_ATHonly(gfp));
|
|
DebugPrintf("ATH short =%d\n", lame_get_ATHshort(gfp));
|
|
DebugPrintf("ATH no =%d\n", lame_get_noATH(gfp));
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DebugPrintf("ATH type =%d\n", lame_get_ATHtype(gfp));
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DebugPrintf("ATH lower =%f\n", lame_get_ATHlower(gfp));
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DebugPrintf("ATH aa =%d\n", lame_get_athaa_type(gfp));
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//DebugPrintf("ATH aa loudapprox =%d\n", lame_get_athaa_loudapprox( gfp ) );
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DebugPrintf("ATH aa sensitivity =%f\n", lame_get_athaa_sensitivity(gfp));
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DebugPrintf("Experimental nspsytune =%d\n", lame_get_exp_nspsytune(gfp));
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DebugPrintf("Experimental X =%d\n", lame_get_experimentalX(gfp));
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DebugPrintf("Experimental Y =%d\n", lame_get_experimentalY(gfp));
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DebugPrintf("Experimental Z =%d\n", lame_get_experimentalZ(gfp));
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}
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static void DispErr(wchar_t const* strErr)
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{
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MessageBox(NULL, strErr, L"LAME_ENC.DLL", MB_OK | MB_ICONHAND);
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}
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#ifdef __cplusplus
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}
|
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#endif
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