mpv/libmpcodecs/ad_acm.c

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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#ifdef USE_WIN32DLL
#include "ad_internal.h"
static ad_info_t info =
{
"Win32 ACM audio decoder",
"acm",
AFM_ACM,
"Nick Kurshev",
"avifile.sf.net",
""
};
LIBAD_EXTERN(acm)
#include "dll_init.h"
static int init(sh_audio_t *sh_audio)
{
int ret=acm_decode_audio(sh_audio,sh_audio->a_buffer,4096,sh_audio->a_buffer_size);
if(ret<0){
mp_msg(MSGT_DECAUDIO,MSGL_INFO,"ACM decoding error: %d\n",ret);
return 0;
}
sh_audio->a_buffer_len=ret;
return 1;
}
static int preinit(sh_audio_t *sh_audio)
{
/* Win32 ACM audio codec: */
if(init_acm_audio_codec(sh_audio)){
sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
sh_audio->channels=sh_audio->o_wf.nChannels;
sh_audio->samplerate=sh_audio->o_wf.nSamplesPerSec;
} else {
mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_ACMiniterror);
return 0;
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/ACM audio codec init OK!\n");
return 1;
}
static void uninit(sh_audio_t *sh)
{
close_acm_audio_codec(sh);
}
static int control(sh_audio_t *sh_audio,int cmd,void* arg, ...)
{
int skip;
switch(cmd)
{
case ADCTRL_SKIP_FRAME:
skip=sh_audio->wf->nBlockAlign;
if(skip<16){
skip=(sh_audio->wf->nAvgBytesPerSec/16)&(~7);
if(skip<16) skip=16;
}
demux_read_data(sh_audio->ds,NULL,skip);
return CONTROL_TRUE;
}
return CONTROL_UNKNOWN;
}
static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
{
return acm_decode_audio(sh_audio,buf,minlen,maxlen);
}
#endif