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#include "af.h"
/* Decodes the format from mplayer format to libaf format */
int af_format_decode(int ifmt)
{
int ofmt = ~0;
// Check input ifmt
switch(ifmt){
case(AFMT_U8):
ofmt = AF_FORMAT_LE|AF_FORMAT_US; break;
case(AFMT_S8):
ofmt = AF_FORMAT_LE|AF_FORMAT_SI; break;
case(AFMT_S16_LE):
ofmt = AF_FORMAT_LE|AF_FORMAT_SI; break;
case(AFMT_S16_BE):
ofmt = AF_FORMAT_BE|AF_FORMAT_SI; break;
case(AFMT_U16_LE):
ofmt = AF_FORMAT_LE|AF_FORMAT_US; break;
case(AFMT_U16_BE):
ofmt = AF_FORMAT_BE|AF_FORMAT_US; break;
case(AFMT_S32_LE):
ofmt = AF_FORMAT_LE|AF_FORMAT_SI; break;
case(AFMT_S32_BE):
ofmt = AF_FORMAT_BE|AF_FORMAT_SI; break;
case(AFMT_IMA_ADPCM):
ofmt = AF_FORMAT_IMA_ADPCM; break;
case(AFMT_MU_LAW):
ofmt = AF_FORMAT_MU_LAW; break;
case(AFMT_A_LAW):
ofmt = AF_FORMAT_A_LAW; break;
case(AFMT_MPEG):
ofmt = AF_FORMAT_MPEG2; break;
case(AFMT_AC3):
ofmt = AF_FORMAT_AC3; break;
case(AFMT_FLOAT):
ofmt = AF_FORMAT_F | AF_FORMAT_NE; break;
default:
//This can not happen ....
af_msg(AF_MSG_FATAL,"Unrecognized input audio format %i\n",ifmt);
break;
}
return ofmt;
}
/* Encodes the format from libaf format to mplayer (OSS) format */
int af_format_encode(void* fmtp)
{
af_data_t* fmt=(af_data_t*) fmtp;
switch(fmt->format&AF_FORMAT_SPECIAL_MASK){
case 0: // PCM:
if((fmt->format&AF_FORMAT_POINT_MASK)==AF_FORMAT_I){
if((fmt->format&AF_FORMAT_SIGN_MASK)==AF_FORMAT_SI){
// signed int PCM:
switch(fmt->bps){
case 1: return AFMT_S8;
case 2: return (fmt->format&AF_FORMAT_LE) ? AFMT_S16_LE : AFMT_S16_BE;
case 4: return (fmt->format&AF_FORMAT_LE) ? AFMT_S32_LE : AFMT_S32_BE;
}
} else {
// unsigned int PCM:
switch(fmt->bps){
case 1: return AFMT_U8;
case 2: return (fmt->format&AF_FORMAT_LE) ? AFMT_U16_LE : AFMT_U16_BE;
// case 4: return (fmt->format&AF_FORMAT_LE) ? AFMT_U32_LE : AFMT_U32_BE;
}
}
} else {
// float PCM:
return AFMT_FLOAT; // FIXME?
}
break;
case AF_FORMAT_MU_LAW: return AFMT_MU_LAW;
case AF_FORMAT_A_LAW: return AFMT_A_LAW;
case AF_FORMAT_MPEG2: return AFMT_MPEG;
case AF_FORMAT_AC3: return AFMT_AC3;
case AF_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM;
}
return AFMT_S16_LE; // shouldn't happen
}
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