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< >关于多媒体播放器在CB下声道转换的原代码!(DEPHI版的网上有)</P>
# W8 F* d8 P, U1 z+ J9 r< >TSuperPlayerform *SuperPlayerform;
4 x* w; H1 W1 r' K0 N4 \- w typedef struct
5 E& g: l/ O; e! b6 i {
; w% ?9 @6 v" m# q' A, B) f; S DWORD dwCallback;
+ G* a" B" r; I$ n3 G7 t$ U. n0 j" B DWORD dwItem;
7 I8 i& K- N: u- m- v- ~ DWORD dwValue;
K% ?6 M% i) q' s! ]3 X. F DWORD dwOver;' H' \6 B7 L2 A( k
LPSTR lpstrAlgorithm;
- U( g' |: f) K5 Q6 g2 C9 H LPSTR lpstrQuality;9 y5 D( l& Q& l3 Y9 V2 u
} MCI_DGV_SETAUDIO_PARMS;
+ Z/ c1 V0 U: x q3 d& V
8 } Y) ~* k7 H* M }7 v const MCI_SETAUDIO = 0x873;$ z' s3 f B. e1 N. ~5 H' C
const MCI_SETVIDEO = 0x0876;
+ s8 M" _' [' I3 T ~9 f const MCI_DGV_SETAUDIO_SOURCE_LEFT=1;. e. x; }5 o' j F; ^- ?6 f8 g7 }- c
const MCI_DGV_SETAUDIO_SOURCE_STEREO=0;
/ _+ N+ {; a( @0 Y* T. u# x const MCI_DGV_SETAUDIO_SOURCE_RIGHT=2;
$ J+ Q+ w* l7 z+ ~% D0 c. }4 g2 \ const MCI_DGV_SETAUDIO_SOURCE=0x4004;$ o m+ f( H- B" v" l! ]" h6 s
const MCI_DGV_SETAUDIO_VOLUME=0x4002;0 i: S7 o3 G- o* @ I# s {
const MAX_VOLUME=65535;
0 h, ]; {) `4 E6 K5 H const MIN_VOLUME=0;</P>
7 w( S. _* z0 Q. k. x1 T& w< >void __fastcall TSuperPlayerform: RC(char &S)
5 G7 m7 G7 L$ m. d# m {
6 i$ u. e6 [& t8 S. x* E: d p& o //char str; G; ~- c7 Y1 ]( v7 \
MCI_DGV_SETAUDIO_PARMS s;1 Q9 k5 ]# y7 k, N" p: Y9 g# C6 q
int err;
9 d- S- r4 d" h# K char buf[1001];
" C/ w. L! l" I6 K& \" t9 c //str=''L'';
- F- m# e3 M2 Q/ L if (MediaPlayer1->DeviceID>0)
' K. v! f* b: E. h$ }3 E {
0 ?; L. o5 I) ~9 p2 g err=mciSendCommand(MediaPlayer1->DeviceID,MCI_SETAUDIO,MCI_SET_OFF,int(&s));
- L7 i( Q1 t) E7 l; E" T# p if (err!=0): e" F# } Z( A& f5 f# {
mciGetErrorString(err,buf,sizeof(buf) );9 C. R3 C$ f- k/ }! m+ N# |
if (S=='C')
0 H4 o; [2 ?6 ~% @5 } m s.dwValue=MCI_DGV_SETAUDIO_SOURCE_STEREO;' R1 A* u$ L4 I7 k0 u& C2 }/ E
if (S=='L')
& B" U& p' B. ~5 v3 g s.dwValue=MCI_DGV_SETAUDIO_SOURCE_LEFT;
2 d% K/ b$ `5 v. D' X if (S=='R') s.dwValue=MCI_DGV_SETAUDIO_SOURCE_RIGHT;
1 L" v G F, f7 H% u- X s.dwItem=MCI_DGV_SETAUDIO_SOURCE;6 T' ~5 W5 W R
const MCI_DGV_SETAUDIO_VALUE=0x01000000L;/ i$ w* p, L3 _9 g# G1 |. }" @
const MCI_DGV_SETAUDIO_ITEM=0x00800000L;' X2 {7 H5 R4 y) i! B3 C: J
//(MCI_DGV_SETAUDIO_VALUE||MCI_DGV_SETAUDIO_ITEM)=0x01800000
7 P3 \) f; i }0 g+ W' }6 d err=mciSendCommand(MediaPlayer1->DeviceID,MCI_SETAUDIO,0x01800000,int(&s));
: ?- C, H' e8 _* a. ~ if (err!=0)
' o: o |4 p+ V mciGetErrorString(err,buf,sizeof(buf) );
& r$ m. S' T. P. k6 o err=mciSendCommand(MediaPlayer1->DeviceID,MCI_SETAUDIO, MCI_SET_ON ,int(&s));3 r2 o/ T3 `! {, Y k9 Q
if (err!=0)+ G( x4 c) e0 l
mciGetErrorString(err,buf,sizeof(buf) );
* B2 Z) i$ ^$ I; V* p; I }
* q) m! q( o: R9 n }</P>9 p, z* b# `% N( t
< > void __fastcall TSuperPlayerform::popnosoundClick(TObject *Sender)
7 b6 h- a& M! Y {
2 Q8 \. R. v0 ? B7 N9 |0 d/ b LRC('L');8 r4 I- G7 A& C& G4 ]1 w/ H
Label3->Caption=“左声道 ";( [3 ?# Y" H8 ?: o% @4 S" @1 k
tempchannel='L';
9 U8 Q Q: J. p4 \: B }
" j5 F# K% n; `" u0 i, ~; m2 t( @//---------------------------------------------------------------------------</P>
7 {6 Y: m/ H' G2 X y4 I' x< > void __fastcall TSuperPlayerform::popsoundClick(TObject *Sender), c z7 @% q x5 N' x
{
5 r7 h: y. ~+ L LRC('R');
7 }. z8 z2 s6 i2 T# M Label3->Caption="右声道 ";
1 v. Z3 @/ g- G' ^ tempchannel='R';
+ B: `* q4 e W+ H }& q, J: c5 c) B/ j _, x* C# h
//---------------------------------------------------------------------------</P>) J* P8 T x0 [* h: d% c4 ~1 B
< > void __fastcall TSuperPlayerform::steroClick(TObject *Sender)# h* h( v2 o, u8 V ]
{
. {4 n$ t7 V5 P4 F Z l LRC('C');
/ \/ G$ k. T q! C& T! @ Label3->Caption="立体声 ";
9 K O6 A0 y0 u$ U; B tempchannel='C';# |& G. F! \9 T9 M' w' Z
}</P> |
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