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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#ifdef USE_MP3LIB
#include "ad_internal.h"
static ad_info_t info =
{
"MPEG layer-2, layer-3",
"mp3lib",
"Nick Kurshev",
"mpg123",
"Optimized to MMX/SSE/3Dnow!"
};
LIBAD_EXTERN(mp3lib)
#include "../mp3lib/mp3.h"
extern int fakemono;
static sh_audio_t* dec_audio_sh=NULL;
// MP3 decoder buffer callback:
int mplayer_audio_read(char *buf,int size){
return demux_read_data(dec_audio_sh->ds,buf,size);
}
static int preinit(sh_audio_t *sh)
{
sh->audio_out_minsize=32*36*2*2; //4608;
return 1;
}
static int init(sh_audio_t *sh)
{
// MPEG Audio:
dec_audio_sh=sh; // save sh_audio for the callback:
// MP3_Init(fakemono,mplayer_accel,&mplayer_audio_read); // TODO!!!
#ifdef USE_FAKE_MONO
MP3_Init(fakemono);
#else
MP3_Init();
#endif
MP3_samplerate=MP3_channels=0;
MP3_DecodeFrame(NULL,-2); // FIXME: skip the first frame (often trashed)
sh->a_buffer_len=MP3_DecodeFrame(sh->a_buffer,-1);
if(!sh->a_buffer_len) return 0; // unsupported layer/format
sh->channels=2; // hack
sh->samplesize=2;
sh->samplerate=MP3_samplerate;
sh->i_bps=MP3_bitrate*(1000/8);
MP3_PrintHeader();
return 1;
}
static void uninit(sh_audio_t *sh)
{
}
static int control(sh_audio_t *sh,int cmd,void* arg, ...)
{
switch(cmd)
{
case ADCTRL_RESYNC_STREAM:
MP3_DecodeFrame(NULL,-2); // resync
MP3_DecodeFrame(NULL,-2); // resync
MP3_DecodeFrame(NULL,-2); // resync
return CONTROL_TRUE;
case ADCTRL_SKIP_FRAME:
MP3_DecodeFrame(NULL,-2); // skip MPEG frame
return CONTROL_TRUE;
}
return CONTROL_UNKNOWN;
}
static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
{
return MP3_DecodeFrame(buf,-1);
}
#endif
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