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�Q��݋�Q�Ｄ音乐播放

swo — Mon, 13 Nov 2006 07:42:00 GMT

�Q��݋�Q�Ｄ

三、音乐播�?/p>

�Q��?strong>FMUSIC_PlaySong

　例子�Q�FMUSIC_MODULE *mod = 0;�Q�／初始�?/strong>

　　　　　。。�?/strong>

mod = FMUSIC_LoadSong("canyon.mid");�Q�／加蝲音乐
　　　　　。。�?/strong>
　FMUSIC_PlaySong(mod);　　　�Q�／播放
以下是此函数详细资料
�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q?/strong>
FMUSIC_PlaySong
Starts a song playing.
signed char F_API FMUSIC_PlaySong(
FMUSIC_MODULE *mod
);
Parameters
mod Pointer to the song to be played.
�Q�／要播放歌曲指�?/td>
Return Value
TRUE song succeeded playing
FALSE song failed playing
�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q?/p>
�Q��?strong>FSOUND_PlaySound
例子�Q�FSOUND_SAMPLE　* notre_son�Q�／�Q�初始化
　　　　。。。�?/strong>
　　　notre_son = FSOUND_Sample_Load(FSOUND_FREE, "sound\\bgsound.mp3", FSOUND_NORMAL, 0, 0);�Q�／加蝲
　　　。。。�?/strong>
　　FSOUND_PlaySound(0, notre_son);�Q�／播放
以下是关于此函数的详�l�说�?/strong>
�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q?/p>
FSOUND_PlaySound
Plays a sample in a specified channel, using the sample's default frequency, volume
and pan settings.
�Q�／用一个指定通道来播放例子，使用默认的频率，音量�Q�pan讄��
int F_API FSOUND_PlaySound(
int channel,
FSOUND_SAMPLE *sptr
);
Parameters
channel
0+
The absolute channel number in the channel pool.
�Q�／通道pool里的�l�对通道受��?br />Remember software channels come first, followed by hardware channels.
�Q�／��C��软通道使用在前�Q�再接才是硬通道
You cannot play a software sample on a hardware channel and vice versa.
�Q�／你不可以用一个硬通道来播放一个��Y例子�Q�反�q�来也一栗��?br />FSOUND_FREE
Chooses a free channel to play in.
�Q�／选择一个空闲通道来播�?/p>
If all channels are used then it
selects a channel with a sample playing that has an EQUAL or LOWER priority
than the sample to be played.
�Q�／如果所有通道都被使用�Q�则会选择一个有EQUAL�Q��^�{�） �?LOWER�Q�更低）优先权的通道来播放�?br />FSOUND_ALL
Passing this will cause ALL channels to play. (note this will make things
VERY noisy!)
�Q�／使用它会��D��所以通道播放。（�q�样会很噪音�Q?br />If FSOUND_ALL is used the last channel success flag will be returned.
�Q�／如果使用的是FSOUND_ALL �Q�返回的会是最后一个通道的成功标志�?/p>
sptr Pointer to the sample to be played.
�Q�／要播放例子的指针
Return Value
On success, the channel handle that was selected is returned.
On failure, -1 is returned.
Remarks
If you play a FSOUND_HW3D declared sample with this function, then the position and velocity
are set to those of the listener.
�Q�／如果用这个函数播放一个FSOUND_HW3D声明例子�Q�位�|�和速度被设�|�给們֐��?
Other attributes such as volume, frequency and pan are taken
from the sample's default volume, frequency, pan etc.
�Q�／其他属性如音量�Q�频率和pan从默认中获取�?br />----------
The channel handle :
The return value is reference counted. This stops the user from updating a stolen channel.
Basically it means the only sound you can change the attributes (ie volume/pan/frequency/3d position) for are the one you specifically called playsound for. If another sound steals that channel, and you keep trying to change its attributes (ie volume/pan/frequency/3d position), it will do nothing.
This is great if you have sounds being updated from tasks and you just forget about it.
You can keep updating the sound attributes and if another task steals that channel, your original task wont change the attributes of the new sound!!!
The lower 12 bits contain the channel number. (yes this means a 4096 channel limit for FMOD :)
The upper 19 bits contain the reference count.
The top 1 bit is the sign bit.
ie
S RRRRRRRRRRRRRRRRRRR CCCCCCCCCCCC
----------
Remember if not using FSOUND_FREE, then the channel pool is split up into software and hardware channels.
�Q�／��C��如果没有正在使用FSOUND_FREE�Q�之后通道pool会被分�ؓ软�g和硬仉��道�?br />Software channels occupy the first n indicies specified by the value passed into FSOUND_Init.
Hardware channels occupy the next n indicies after this, and can be a variable amount, depending on the hardware.
�Q�／软通道占据用FSOUND_Init指定的Ｎ�?indicies 。硬通道分到之后�Q�个 indicies �Q�可以有个有效量�Q�取决于��g
Use FSOUND_GetNumHardwareChannels to query how many channels are available in hardware.

�Q�／可以使用FSOUND_GetNumHardwareChannels 去质问有多少通道在硬件中有效�?/p>
�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／
另：FSOUND_PlaySoundEx
例如�Q?/p>
channel = FSOUND_PlaySoundEx(FSOUND_FREE, samp2, NULL, TRUE);
以下是此函数的详�l�资�?/p>
�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／
FSOUND_PlaySoundEx
Extended featured version of FSOUND_PlaySound.
�Q�／FSOUND_PlaySound的扩展版�?br />New functionality includes the ability to start the sound paused.
�Q�／新函数包含开始声��x��停的功能�?br />This allows attributes of a channel to be set freely before the sound actually starts playing, until FSOUND_SetPaused(FALSE) is used.
�Q�／�q�个通道允许属性在声音真正播放前被设�ؓ自由。直��C��用FSOUND_SetPaused(FALSE)�?br />Also added is the ability to associate the channel to a specified DSP unit.
�Q�／同样增加了分配通道��C��个指定Ｄ�Q�I��单元的功能�?/p>
This allows the user to 'group' channels into seperate DSP units, which allows effects to be inserted between these 'groups', and allow various things like having one group affected by reverb (wet mix) and another group of channels unaffected (dry).
�Q�／允许用户�?'group' 通道分到可以把效果插入这�?group' 中的�Q�Ｓ�Q�单元中�Q�允许像有一�l�湿声和另一�l�干声明通道的各�U�方式�?/p>
This is useful to seperate things like music from being affected by DSP effects, while other sound effects are.
�Q�／通常把如音乐的东西从�Q�Ｓ�Q�效果分��R�?/p>
int F_API FSOUND_PlaySoundEx(
int channel,
FSOUND_SAMPLE *sptr,
FSOUND_DSPUNIT *dspunit,
signed char startpaused
);
Parameters
channel 0+
The absolute channel number in the channel pool.
Remember software channels come first, followed by hardware channels.
You cannot play a software sample on a hardware channel and vice versa.
FSOUND_FREE
Chooses a free channel to play in. If all channels are used then it
selects a channel with a sample playing that has an EQUAL or LOWER priority
than the sample to be played.
FSOUND_ALL
Plays the sound on all channels.
�Q�／同上
sptr Pointer to the sample to be played.
�Q�／同上
dspunit Optional. NULL by default. Pointer to a dsp unit to attach the channel to for channel grouping. Only attach a sound to a user created DSP unit, and not a system DSP unit.
�Q�／可选。默认�ؓ�I�。把一个dsp单元附加在通道上的指针。只有把声音附加在一个用戯��建DSP单元�Q�不是一个系�l�Ｄ�Q�I��单元�?/td>
paused Start the sound paused or not. Pausing the sound allows attributes to be set before the sound starts.
�Q�／是否开始声��x��停。在声音开始之前可以设�|�是否允许暂停�?/td>
Return Value
On success, the channel handle that was selected is returned.
On failure, -1 is returned.
Remarks
FSOUND_ALL is supported. Passing this will cause ALL channels to play. (note this could make things VERY noisy!)�Q�／同上
If FSOUND_ALL is used the last channel success flag will be returned. This return value is not useful in most circumstances.�Q�／如果是��用FSOUND_ALL �Q�返回的是最后通道倹{��返回值在大多情况下都没有用�?br />----------
The channel handle :
The return value is reference counted. This stops the user from updating a stolen channel.
This means the only sound you can change the attributes (ie volume/pan/frequency/3d position) for are the
one you specifically called playsound for. If another sound steals that channel, and you keep trying to
change its attributes (ie volume/pan/frequency/3d position), it will do nothing.
This is great if you have sounds being updated from tasks and you just forget about it.
You can keep updating the sound attributes and if another task steals that channel, your original task
wont change the attributes of the new sound!!!
The lower 12 bits contain the channel number. (yes this means a 4096 channel limit for FMOD :)
The upper 19 bits contain the reference count.
The top 1 bit is the sign bit.
ie
S RRRRRRRRRRRRRRRRRRR CCCCCCCCCCCC
----------
Remember if not using FSOUND_FREE, then the channel pool is split up into software and hardware channels.
Software channels occupy the first n indicies specified by the value passed into FSOUND_Init.
Hardware channels occupy the next n indicies after this, and can be a variable amount, depending on the hardware.
Use FSOUND_GetNumHardwareChannels to query how many channels are available in hardware.
�Q�／同上
----------
If you attach a sound to a DSP unit (for grouping purposes), the callback for the DSP unit will be overwritten with fmod's internal mixer callback, so the callback the user supplied is rendered obsolete and is not called.
Also, do not attach sounds to system DSP units, the assignment will be ignored if you do.
�Q�／如果你把一个声音附加在一个Ｄ�Q�I��单元上，�Q�Ｓ�Q�单元的回调��会被fmod的内在�؜合回调覆盖，所以用��h��供的回调会作废和不被调用�Q�同�Ӟ��不把声音附加在系�l�Ｄ�Q�I��单元�Q�这个�Q务将会忽略�?/p>
�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／
�Q��?strong>FSOUND_Stream_Play
例子�Q�FSOUND_Stream_Play(FSOUND_FREE, stream)
以下是此函数的详�l�说�?/strong>
�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／
FSOUND_Stream_Play
Starts a pre-opened stream playing.
int F_API FSOUND_Stream_Play(
int channel,
FSOUND_STREAM *stream
);
Parameters
channel 0+ The channel index in the channel pool. This must not exceed the maximum number of channels allocated with FSOUND_Init
FSOUND_FREE
Chooses a free channel to play in. If all channels are used then it
selects a channel with a sample playing that has a lower priority than the
sample to be played.
�Q�／同上
stream Pointer to the already opened stream to be played.
�Q�／要播攄��已经打开的指�?/td>
Return Value
On success, the channel handle the stream is playing in is returned.
On failure, -1 is returned.
Remarks
When a stream starts to play, it inherits a special high priority (256).
�Q�／当一个stream开始播放时�Q�它�l�承一个特别高的优先权�Q�２�Q�６�Q��?br />It cannot be rejected by other sound effect channels in the normal fashion as the user can never set a priority above 255 normally.
�Q�／当用��h��有设�|�一个低�?56的正�怼�先权�Ӟ��它不能被其他声效通道以正常方式拒�l��?br />--------------
If the stream has been opened with FSOUND_NONBLOCKING, this function will not succeed until the stream is ready.
--------------
FSB streaming is not supported if the format from FSBank is 'Retain original format'. On PC platforms, only PCM and ADPCM FSB files are allowed.
�Q�／同前
--------------
FSOUND_STEREOPAN is recommended for stereo streams if you call FSOUND_SetPan. This puts the left and right channel to full volume.
�Q�／如果你调用FSOUND_SetPan�Q�FSOUND_STEREOPAN会被推荐�l�立体声。他可以把左叛_��道都调�ؓ最大音量�?
Otherwise a normal pan will give half volume for left and right. See FSOUND_SetPan for more information on this.
�Q�／相反一个正常pan会带一半音量给左和叟뀂查看FSOUND_SetPan ��M��解更多信息�?br />--------------
You can use normal channel based commands (such as FSOUND_SetVolume etc) on the return handle, as it is a channel handle.
�Q�／你可以用正常通道的基本命令到�q�回句柄上，当它是一个通道句柄�?/p>
另：FSOUND_Stream_PlayEx
例如�Q��?channel = FSOUND_Stream_PlayEx(FSOUND_FREE, stream, NULL, TRUE);
以下是此函数的详�l�说�?/strong>
�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q�／�Q?/strong>
FSOUND_Stream_PlayEx
Extended featured version of FSOUND_Stream_Play.
Added functionality includes the ability to start the stream paused. This allows attributes
of a stream channel to be set freely before the stream actually starts playing, until FSOUND_SetPaused(FALSE) is used.
Also added is the ability to associate the stream channel to a specified DSP unit. This allows
the user to 'group' channels into seperate DSP units, which allows effects to be inserted
between these 'groups', and allow various things like having one group affected by reverb (wet mix) and another group of
channels unaffected (dry). This is useful to seperate things like music from being affected
by DSP effects, while other sound effects are.
�Q�／同上
int F_API FSOUND_Stream_PlayEx(
int channel,
FSOUND_STREAM *stream,
FSOUND_DSPUNIT *dspunit,
signed char paused
);
Parameters
channel 0+
The absolute channel number in the channel pool.
Remember software channels come first, followed by hardware channels.
You cannot play a software sample on a hardware channel and vice versa.
FSOUND_FREE
Chooses a free channel to play in. If all channels are used then it
selects a channel with a sample playing that has an EQUAL or LOWER priority
than the sample to be played.
�Q�／同上
stream Pointer to the already opened stream to be played.
�Q�／同上
dspunit Pointer to a dsp unit to attach the channel to.
�Q�／同上
paused Start the stream paused or not. Pausing the stream channel allows attributes to be set before it is unpaused.
�Q�／同上
Return Value
On success, a channel handle the stream is playing in is returned.
On failure, -1 is returned.
Remarks
When a stream starts to play, it inherits a special high priority (256).
�Q�／同上
It cannot be rejected by other sound effect channels in the normal fashion as the user can never set a priority above 255 normally.
�Q�／同上
--------
FSOUND_STEREOPAN is recommended for stereo streams if you call FSOUND_SetPan. This puts the left and right channel to full volume.
Otherwise a normal pan will give half volume for left and right. See FSOUND_SetPan for more information on this.
�Q�／同上
--------
You can use normal channel based commands (such as FSOUND_SetVolume etc) on the return handle, as it is a channel handle.

�Q�／同上

swo 2006-11-13 15:42 发表评论

swo — Mon, 13 Nov 2006 07:41:00 GMT

FMOD.dll的介�l?br />��译(Robin)
Email:eway365@hotmail.com

什么是FMOD?
FMOD是一个非常简单通用的audio引擎,可以在windows,winCE,Linux,GameCube Xbox�{��^��C��很好�q�行.
FMOD是一个共享��Y�?如果不用于商业用途可以免费��?商业用途需要付�?00��金.详细情况请关�?a >www.fomod.org

下蝲后将fmod.dll和fmodvc.lib加入你的工程�?�q�引用头文�gfmod.h
在��用fmod播入音乐之前,首先要初始化,代码如下:
FSOUND_Init(44100,32,0);
�W�一个参��Cؓ单乐输出的rate,单位��?在这里我们设�|��ؓ44100.
�W�二个参��Cؓ讄��最大的通道数量
�W�三个参�?可以指定一些标�?如果我们想的�?�q�里暂时�|�它�?.

好了,现在我们准备开始播攑֍�乐了,可FMOD道底支持什么样的单乐格式呢?
歌曲,采样或是文�g��?song,sample and stream)?
FMOD��它�l�分在两个API�?他们分别是FSOUND和FMUSIC

所有的music�?mod,s3m,xm,it,mid,rmi,sgt,fsb 都通过FMUSIC �q�个API来播�?br />FSOUND API是提供给压羃格式使用�?文�g一般如:wav,mp3,ogg,raw�{?br />�q�些格式,你都可以通过别的软�g�q�行互相转换.
如果你要播放的单乐是像炮弹发��一��L��短小的声�?那么你可以将�q�些声间转成sample
Samples��在播放前先解压到内�?而且可以多次播放.
如果你要播放的是象背景音乐一��L��较长的音�?你可以得到这个音乐�{化�ؓ��?�q�将��D��
使用一些CPU和内�?因�ؓ文�g从磁盘读取然后�{成流需要一个过�E?同时需要注意一�?�?br />同一旉��不能多次播放

FMUSIC:
用FMUSIC播放需要一个handle,看如下代�?
handle = FMUSIC_LoadSong("YourFileName");
FMUSIC_PlaySong(handle);
现在你可能注意到,几乎每个function的第一个参数都需要一个handle;

讄��单量
FMUSIC_SetMasterVolume(handle,256);
256是最高音,0表示静音

暂定单乐
FMUSIC_SetPaused(handle,true);
FMUSIC_SetPaused(handle,false);

循环播放
FMUSIC_SetLooping(handle,true);

停止音乐
FMUSIC_StopSong(handle);

free内存
FMUSIC_FreeSong(handle);

一个例�?
#include
#include "inc/fmod.h"

FMUSIC_MODULE* handle;

int main ()
{
// init FMOD sound system
FSOUND_Init (44100, 32, 0);

// load song
handle=FMUSIC_LoadSong ("canyon.mid");

// play song only once
// when you want to play a midi file you have to disable looping
// BEFORE playing the song else this command has no effect!
FMUSIC_SetLooping (handle, false);

// play song
FMUSIC_PlaySong (handle);

// wait until the users hits a key to end the app
while (!_kbhit())
{
}

//clean up
FMUSIC_FreeSong (handle);
FSOUND_Close();
}

下面开始介�l�FSOUND
得到FSOUND的句�?
handle = FSOUND_Sample_Load(0,"yourFileName",0,0,0);
FSOUND_PlaySound(0,handle);
�q�些��x��在播攑։��被载入内存,所以可能需要一点点旉��.
�W�二行命令的�W�一个参数是播放时��用的通道.

讄��音量
FSOUND_SetVolume(handle,255);
255为最大音�?0表示静音

暂停音乐
FSOUND_SetPaused(handle,true);
FSOUND_SetPaused(handle,false);

停止音乐
FSOUND_StopSound (handle);

清除内存
FSOUND_Sample_Free(handle);

看一个例�?
#include
#include "inc/fmod.h"

FSOUND_SAMPLE* handle;

int main ()
{
// init FMOD sound system
FSOUND_Init (44100, 32, 0);

// load and play sample
handle=FSOUND_Sample_Load (0,"sample.mp3",0, 0, 0);
FSOUND_PlaySound (0,handle);

// wait until the users hits a key to end the app
while (!_kbhit())
{
}

// clean up
FSOUND_Sample_Free (handle);
FSOUND_Close();
}

Streams:
handle=FSOUND_Stream_Open("YourFileName",0, 0, 0);
FSOUND_Stream_Play (0,handle);

停止音乐
FSOUND_Stream_Stop(handle);
清除
FSOUND_Stream_Close(handle);

一个例�?
#include
#include "inc/fmod.h"

FSOUND_STREAM* handle;

void main ()
{
//init FMOD sound system
FSOUND_Init (44100, 32, 0);

//load and play sample
handle=FSOUND_Stream_Open("sample.mp3",0, 0, 0);
FSOUND_Stream_Play (0,handle);

//wait until the users hits a key to end the app
while (!_kbhit())
{
}

//clean up
FSOUND_Stream_Close(handle);
FSOUND_Close();
}

swo 2006-11-13 15:41 发表评论

channel	0+ The absolute channel number in the channel pool. Remember software channels come first, followed by hardware channels. You cannot play a software sample on a hardware channel and vice versa. FSOUND_FREE Chooses a free channel to play in. If all channels are used then it selects a channel with a sample playing that has an EQUAL or LOWER priority than the sample to be played. FSOUND_ALL Plays the sound on all channels. �Q�／同上
sptr	Pointer to the sample to be played. �Q�／同上
dspunit	Optional. NULL by default. Pointer to a dsp unit to attach the channel to for channel grouping. Only attach a sound to a user created DSP unit, and not a system DSP unit. �Q�／可选。默认�ؓ�I�。把一个dsp单元附加在通道上的指针。只有把声音附加在一个用戯��建DSP单元�Q�不是一个系�l�Ｄ�Q�I��单元�?/td>
paused	Start the sound paused or not. Pausing the sound allows attributes to be set before the sound starts. �Q�／是否开始声��x��停。在声音开始之前可以设�\|�是否允许暂停�?/td>

channel	0+ The channel index in the channel pool. This must not exceed the maximum number of channels allocated with FSOUND_Init FSOUND_FREE Chooses a free channel to play in. If all channels are used then it selects a channel with a sample playing that has a lower priority than the sample to be played. �Q�／同上
stream	Pointer to the already opened stream to be played. �Q�／要播攄��已经打开的指�?/td>