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| /*
BASSenc recording example
Copyright (c) 2003-2011 Un4seen Developments Ltd.
*/
#include <windows.h>
#include <commctrl.h>
#include <stdio.h>
#include "bass.h"
#include "bassenc.h"
HWND win;
#define FREQ 44100
#define CHANS 2
int input; // current input source
int encoder; // current encoder
WAVEFORMATEX *acmform=0; // ACM codec format
DWORD acmformlen; // ACM codec format size
HRECORD rchan=0; // recording channel
HSTREAM chan=0; // playback channel
HENCODE hencode; // encoder handle
// encoder command-lines and output files
const char *commands[2]={
"oggenc -o bass.ogg -", // oggenc (OGG)
"lame --alt-preset standard - bass.mp3" // lame (MP3)
};
const char *files[3]={"bass.ogg","bass.mp3","bass.wav"}; // OGG,MP3,ACM
// display error messages
void Error(const char *es)
{
char mes[200];
sprintf(mes,"%s\n(error code: %d)",es,BASS_ErrorGetCode());
MessageBox(win,mes,0,0);
}
// messaging macros
#define MESS(id,m,w,l) SendDlgItemMessage(win,id,m,(WPARAM)(w),(LPARAM)(l))
#define DLGITEM(id) GetDlgItem(win,id)
BOOL CALLBACK RecordingCallback(HRECORD handle, const void *buffer, DWORD length, void *user)
{
return BASS_Encode_IsActive(handle); // continue recording if encoder is alive
}
void StartRecording()
{
if (chan) { // free old recording
BASS_StreamFree(chan);
chan=0;
EnableWindow(DLGITEM(11),FALSE);
// close output device before recording incase of half-duplex device
BASS_Free();
}
// start recording (paused to add encoder first)
rchan=BASS_RecordStart(FREQ,CHANS,BASS_RECORD_PAUSE,&RecordingCallback,0);
if (!rchan) {
Error("Couldn't start recording");
return;
}
// get selected encoder (0=OGG, 1=MP3, 2=ACM)
if (MESS(18,BM_GETCHECK,0,0)) encoder=2;
else encoder=MESS(17,BM_GETCHECK,0,0);
if (encoder==2) {
if (!BASS_Encode_GetACMFormat(rchan,acmform,acmformlen,(char*)NULL,BASS_ACM_DEFAULT) // select the ACM codec
|| !(hencode=BASS_Encode_StartACMFile(rchan,acmform,0,files[2]))) { // start the ACM encoder
Error("Couldn't start encoding");
BASS_ChannelStop(rchan);
rchan=0;
return;
}
} else if (!(hencode=BASS_Encode_Start(rchan,commands[encoder],0,NULL,0))) { // start the OGG/MP3 encoder
Error("Couldn't start encoding...\n"
"Make sure OGGENC.EXE (if encoding to OGG) is in the same\n"
"direcory as this example, or LAME.EXE (if encoding to MP3).");
BASS_ChannelStop(rchan);
rchan=0;
return;
}
BASS_ChannelPlay(rchan,FALSE); // resume recoding
MESS(10,WM_SETTEXT,0,"Stop");
EnableWindow(DLGITEM(16),FALSE);
EnableWindow(DLGITEM(17),FALSE);
EnableWindow(DLGITEM(18),FALSE);
}
void StopRecording()
{
// stop recording & encoding
BASS_ChannelStop(rchan);
rchan=0;
BASS_Encode_Stop(hencode);
MESS(10,WM_SETTEXT,0,"Record");
EnableWindow(DLGITEM(16),TRUE);
EnableWindow(DLGITEM(17),TRUE);
EnableWindow(DLGITEM(18),TRUE);
// setup output device (using default device)
if (!BASS_Init(-1,44100,0,win,NULL)) {
Error("Can't initialize output device");
return;
}
// create a stream from the recording
if (chan=BASS_StreamCreateFile(FALSE,files[encoder],0,0,0))
EnableWindow(DLGITEM(11),TRUE); // enable "play" button
else
BASS_Free();
}
void UpdateInputInfo()
{
char *type;
float level;
int it=BASS_RecordGetInput(input,&level); // get info on the input
MESS(14,TBM_SETPOS,TRUE,level*100); // set the level slider
switch (it&BASS_INPUT_TYPE_MASK) {
case BASS_INPUT_TYPE_DIGITAL:
type="digital";
break;
case BASS_INPUT_TYPE_LINE:
type="line-in";
break;
case BASS_INPUT_TYPE_MIC:
type="microphone";
break;
case BASS_INPUT_TYPE_SYNTH:
type="midi synth";
break;
case BASS_INPUT_TYPE_CD:
type="analog cd";
break;
case BASS_INPUT_TYPE_PHONE:
type="telephone";
break;
case BASS_INPUT_TYPE_SPEAKER:
type="pc speaker";
break;
case BASS_INPUT_TYPE_WAVE:
type="wave/pcm";
break;
case BASS_INPUT_TYPE_AUX:
type="aux";
break;
case BASS_INPUT_TYPE_ANALOG:
type="analog";
break;
default:
type="undefined";
}
MESS(15,WM_SETTEXT,0,type); // display the type
}
BOOL InitDevice(int device)
{
BASS_RecordFree(); // free current device (and recording channel) if there is one
// initalize new device
if (!BASS_RecordInit(device)) {
Error("Can't initialize recording device");
return FALSE;
}
{ // get list of inputs
int c;
const char *i;
MESS(13,CB_RESETCONTENT,0,0);
for (c=0;i=BASS_RecordGetInputName(c);c++) {
MESS(13,CB_ADDSTRING,0,i);
if (!(BASS_RecordGetInput(c,NULL)&BASS_INPUT_OFF)) { // this one is currently "on"
input=c;
MESS(13,CB_SETCURSEL,input,0);
UpdateInputInfo();
}
}
}
return TRUE;
}
BOOL CALLBACK dialogproc(HWND h,UINT m,WPARAM w,LPARAM l)
{
switch (m) {
case WM_TIMER:
{ // update the recording/playback counter
char text[30]="";
if (rchan) // recording/encoding
sprintf(text,"%I64d",BASS_Encode_GetCount(hencode,BASS_ENCODE_COUNT_IN));
else if (chan) {
if (BASS_ChannelIsActive(chan)) // playing
sprintf(text,"%I64d / %I64d",BASS_ChannelGetPosition(chan,BASS_POS_BYTE),BASS_ChannelGetLength(chan,BASS_POS_BYTE));
else
sprintf(text,"%I64d",BASS_ChannelGetLength(chan,BASS_POS_BYTE));
}
MESS(20,WM_SETTEXT,0,text);
}
break;
case WM_COMMAND:
switch (LOWORD(w)) {
case IDCANCEL:
DestroyWindow(h);
break;
case 10:
if (!rchan)
StartRecording();
else
StopRecording();
break;
case 11:
BASS_ChannelPlay(chan,TRUE); // play the recorded data
break;
case 13:
if (HIWORD(w)==CBN_SELCHANGE) { // input selection changed
int i;
input=MESS(13,CB_GETCURSEL,0,0); // get the selection
// enable the selected input
for (i=0;BASS_RecordSetInput(i,BASS_INPUT_OFF,-1);i++) ; // 1st disable all inputs, then...
BASS_RecordSetInput(input,BASS_INPUT_ON,-1); // enable the selected
UpdateInputInfo(); // update info
}
break;
case 19:
if (HIWORD(w)==CBN_SELCHANGE) { // device selection changed
int i=MESS(19,CB_GETCURSEL,0,0); // get the selection
// initialize the selected device
if (InitDevice(i)) {
if (rchan) { // continue recording on the new device...
HRECORD newrchan=BASS_RecordStart(FREQ,CHANS,0,RecordingCallback,0);
if (!newrchan)
Error("Couldn't start recording");
else {
rchan=newrchan;
BASS_Encode_SetChannel(hencode,rchan); // move the encoder to the new recording
}
}
}
}
break;
}
break;
case WM_HSCROLL:
if (l) { // set input source level
float level=SendMessage((HWND)l,TBM_GETPOS,0,0)/100.f;
if (!BASS_RecordSetInput(input,0,level)) // failed to set input level
BASS_RecordSetInput(-1,0,level); // try master level instead
}
break;
case WM_INITDIALOG:
win=h;
MESS(14,TBM_SETRANGE,FALSE,MAKELONG(0,100));
MESS(16,BM_SETCHECK,BST_CHECKED,0);
{ // get list of recording devices
int c,def;
BASS_DEVICEINFO di;
for (c=0;BASS_RecordGetDeviceInfo(c,&di);c++) {
MESS(19,CB_ADDSTRING,0,di.name);
if (di.flags&BASS_DEVICE_DEFAULT) { // got the default device
MESS(19,CB_SETCURSEL,c,0);
def=c;
}
}
InitDevice(def); // initialize default recording device
}
SetTimer(h,0,200,0); // timer to update the position display
// allocate ACM format buffer, using suggested buffer size
acmformlen=BASS_Encode_GetACMFormat(0,NULL,0,(char*)NULL,0);
acmform=(WAVEFORMATEX*)malloc(acmformlen);
memset(acmform,0,acmformlen);
return 1;
case WM_DESTROY:
// release all BASS stuff
BASS_RecordFree();
BASS_Free();
free(acmform); // free ACM format buffer
break;
}
return 0;
}
int PASCAL WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow)
{
// check the correct BASS was loaded
if (HIWORD(BASS_GetVersion())!=BASSVERSION) {
MessageBox(0,"An incorrect version of BASS.DLL was loaded",0,MB_ICONERROR);
return 0;
}
{ // enable trackbar support (for the level control)
INITCOMMONCONTROLSEX cc={sizeof(cc),ICC_BAR_CLASSES};
InitCommonControlsEx(&cc);
}
DialogBox(hInstance,(char*)1000,0,&dialogproc);
return 0;
} |
Encapsulation de l'API BASS.dll (audio)
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