[Help] Adding text to a variable line in a file Post: 302843543

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sdl_audiospec

SDL_AudioSpec(3)						 SDL API Reference						  SDL_AudioSpec(3)

NAME

       SDL_AudioSpec - Audio Specification Structure

STRUCTURE DEFINITION

       typedef struct{
	 int freq;
	 Uint16 format;
	 Uint8 channels;
	 Uint8 silence;
	 Uint16 samples;
	 Uint32 size;
	 void (*callback)(void *userdata, Uint8 *stream, int len);
	 void *userdata;
       } SDL_AudioSpec;

STRUCTURE DATA

       freq		   Audio frequency in samples per second

       format		   Audio data format

       channels 	   Number of channels: 1 mono, 2 stereo

       silence		   Audio buffer silence value (calculated)

       samples		   Audio buffer size in samples

       size		   Audio buffer size in bytes (calculated)

       callback(..)	   Callback function for filling the audio buffer

       userdata 	   Pointer the user data which is passed to the callback function

DESCRIPTION

       The  SDL_AudioSpec  structure  is  used to describe the format of some audio data. This structure is used by SDL_OpenAudio and SDL_LoadWAV.
       While all fields are used by SDL_OpenAudio only freq, format, samples and channels are used by SDL_LoadWAV. We  will  detail  these  common
       members here.

       freq		   The	number	of samples sent to the sound device every second. Common values are 11025, 22050 and 44100. The higher the
			   better.

       format		   Specifies the size and type of each sample element

       AUDIO_U8

       AUDIO_S8

       AUDIO_U16 or AUDIO_U16LSB

       AUDIO_S16 or AUDIO_S16LSB

       AUDIO_U16MSB

       AUDIO_S16MSB

       AUDIO_U16SYS

       AUDIO_S16SYS

       channels 	   The number of seperate sound channels. 1 is mono (single channel), 2 is stereo (dual channel).

       samples		   When used with SDL_OpenAudio this refers to the size of the audio buffer in samples. A sample a chunk of audio data	of
			   the size specified in format mulitplied by the number of channels. When the SDL_AudioSpec is used with SDL_LoadWAV sam-
			   ples is set to 4096.

SEE ALSO

       SDL_OpenAudio, SDL_LoadWAV

SDL
							      Tue 11 Sep 2001, 22:58						  SDL_AudioSpec(3)