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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
extern int verbose; // defined in mplayer.c
#include "stream.h"
#include "demuxer.h"
#include "codec-cfg.h"
#include "stheader.h"
#include "dec_audio.h"
#include "ad.h"
#include "../libao2/afmt.h"
#ifdef USE_FAKE_MONO
int fakemono=0;
#endif
/* used for ac3surround decoder - set using -channels option */
int audio_output_channels = 2;
static ad_functions_t* mpadec;
void afm_help(){
int i;
mp_msg(MSGT_DECAUDIO,MSGL_INFO,MSGTR_AvailableAudioFm);
mp_msg(MSGT_DECAUDIO,MSGL_INFO," afm: info: (comment)\n");
for (i=0; mpcodecs_ad_drivers[i] != NULL; i++)
if(mpcodecs_ad_drivers[i]->info->comment && mpcodecs_ad_drivers[i]->info->comment[0])
mp_msg(MSGT_DECAUDIO,MSGL_INFO,"%9s %s (%s)\n",
mpcodecs_ad_drivers[i]->info->short_name,
mpcodecs_ad_drivers[i]->info->name,
mpcodecs_ad_drivers[i]->info->comment);
else
mp_msg(MSGT_DECAUDIO,MSGL_INFO,"%9s %s\n",
mpcodecs_ad_drivers[i]->info->short_name,
mpcodecs_ad_drivers[i]->info->name);
}
int init_audio(sh_audio_t *sh_audio)
{
unsigned i;
for (i=0; mpcodecs_ad_drivers[i] != NULL; i++)
// if(mpcodecs_ad_drivers[i]->info->id==sh_audio->codec->driver){
if(!strcmp(mpcodecs_ad_drivers[i]->info->short_name,sh_audio->codec->drv)){
mpadec=mpcodecs_ad_drivers[i]; break;
}
if(!mpadec){
mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_AudioCodecFamilyNotAvailableStr,
sh_audio->codec->name, sh_audio->codec->drv);
return 0; // no such driver
}
mp_msg(MSGT_DECAUDIO,MSGL_INFO,MSGTR_OpeningAudioDecoder,mpadec->info->short_name,mpadec->info->name);
// reset in/out buffer size/pointer:
sh_audio->a_buffer_size=0;
sh_audio->a_buffer=NULL;
sh_audio->a_in_buffer_size=0;
sh_audio->a_in_buffer=NULL;
// Set up some common usefull defaults. ad->preinit() can override these:
sh_audio->samplesize=2;
#ifdef WORDS_BIGENDIAN
sh_audio->sample_format=AFMT_S16_BE;
#else
sh_audio->sample_format=AFMT_S16_LE;
#endif
sh_audio->samplerate=0;
sh_audio->i_bps=0; // input rate (bytes/sec)
sh_audio->o_bps=0; // output rate (bytes/sec)
sh_audio->audio_out_minsize=8192;/* default size, maybe not enough for Win32/ACM*/
sh_audio->audio_in_minsize=0;
if(!mpadec->preinit(sh_audio))
{
mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_ADecoderPreinitFailed);
return 0;
}
/* allocate audio in buffer: */
if(sh_audio->audio_in_minsize>0){
sh_audio->a_in_buffer_size=sh_audio->audio_in_minsize;
mp_msg(MSGT_DECAUDIO,MSGL_V,MSGTR_AllocatingBytesForInputBuffer,
sh_audio->a_in_buffer_size);
sh_audio->a_in_buffer=malloc(sh_audio->a_in_buffer_size);
memset(sh_audio->a_in_buffer,0,sh_audio->a_in_buffer_size);
sh_audio->a_in_buffer_len=0;
}
/* allocate audio out buffer: */
sh_audio->a_buffer_size=sh_audio->audio_out_minsize+MAX_OUTBURST; /* worst case calc.*/
mp_msg(MSGT_DECAUDIO,MSGL_V,MSGTR_AllocatingBytesForOutputBuffer,
sh_audio->audio_out_minsize,MAX_OUTBURST,sh_audio->a_buffer_size);
sh_audio->a_buffer=malloc(sh_audio->a_buffer_size);
if(!sh_audio->a_buffer){
mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_CantAllocAudioBuf);
return 0;
}
memset(sh_audio->a_buffer,0,sh_audio->a_buffer_size);
sh_audio->a_buffer_len=0;
if(!mpadec->init(sh_audio)){
mp_msg(MSGT_DECAUDIO,MSGL_WARN,MSGTR_ADecoderInitFailed);
uninit_audio(sh_audio); // free buffers
return 0;
}
sh_audio->inited=1;
if(!sh_audio->channels || !sh_audio->samplerate){
mp_msg(MSGT_DECAUDIO,MSGL_WARN,MSGTR_UnknownAudio);
uninit_audio(sh_audio); // free buffers
return 0;
}
if(!sh_audio->o_bps)
sh_audio->o_bps=sh_audio->channels*sh_audio->samplerate*sh_audio->samplesize;
return 1;
}
void uninit_audio(sh_audio_t *sh_audio)
{
if(sh_audio->inited){
mp_msg(MSGT_DECAUDIO,MSGL_V,MSGTR_UninitAudioStr,sh_audio->codec->drv);
mpadec->uninit(sh_audio);
sh_audio->inited=0;
}
if(sh_audio->a_buffer) free(sh_audio->a_buffer);
sh_audio->a_buffer=NULL;
if(sh_audio->a_in_buffer) free(sh_audio->a_in_buffer);
sh_audio->a_in_buffer=NULL;
}
int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
{
if(sh_audio->inited)
return mpadec->decode_audio(sh_audio,buf,minlen,maxlen);
else
return -1;
}
void resync_audio_stream(sh_audio_t *sh_audio)
{
sh_audio->a_in_buffer_len=0; // clear audio input buffer
if(!sh_audio->inited) return;
mpadec->control(sh_audio,ADCTRL_RESYNC_STREAM,NULL);
}
void skip_audio_frame(sh_audio_t *sh_audio)
{
if(!sh_audio->inited) return;
if(mpadec->control(sh_audio,ADCTRL_SKIP_FRAME,NULL)==CONTROL_TRUE) return;
// default skip code:
ds_fill_buffer(sh_audio->ds); // skip block
}
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