mirror of https://github.com/mpv-player/mpv
123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "config.h"
|
|
#include "mp_msg.h"
|
|
#include "help_mp.h"
|
|
|
|
#ifdef USE_LIBAVCODEC
|
|
|
|
#include "ad_internal.h"
|
|
|
|
#include "bswap.h"
|
|
|
|
static ad_info_t info =
|
|
{
|
|
"FFmpeg/libavcodec audio decoders",
|
|
"ffmpeg",
|
|
"Nick Kurshev",
|
|
"ffmpeg.sf.net",
|
|
""
|
|
};
|
|
|
|
LIBAD_EXTERN(ffmpeg)
|
|
|
|
#define assert(x)
|
|
|
|
#ifdef USE_LIBAVCODEC_SO
|
|
#include <ffmpeg/avcodec.h>
|
|
#else
|
|
#include "libavcodec/avcodec.h"
|
|
#endif
|
|
|
|
extern int avcodec_inited;
|
|
|
|
static int preinit(sh_audio_t *sh)
|
|
{
|
|
sh->audio_out_minsize=AVCODEC_MAX_AUDIO_FRAME_SIZE;
|
|
return 1;
|
|
}
|
|
|
|
static int init(sh_audio_t *sh_audio)
|
|
{
|
|
int x;
|
|
AVCodecContext *lavc_context;
|
|
AVCodec *lavc_codec;
|
|
|
|
mp_msg(MSGT_DECAUDIO,MSGL_V,"FFmpeg's libavcodec audio codec\n");
|
|
if(!avcodec_inited){
|
|
avcodec_init();
|
|
avcodec_register_all();
|
|
avcodec_inited=1;
|
|
}
|
|
|
|
lavc_codec = (AVCodec *)avcodec_find_decoder_by_name(sh_audio->codec->dll);
|
|
if(!lavc_codec){
|
|
mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_MissingLAVCcodec,sh_audio->codec->dll);
|
|
return 0;
|
|
}
|
|
|
|
lavc_context = malloc(sizeof(AVCodecContext));
|
|
memset(lavc_context, 0, sizeof(AVCodecContext));
|
|
sh_audio->context=lavc_context;
|
|
|
|
/* open it */
|
|
if (avcodec_open(lavc_context, lavc_codec) < 0) {
|
|
mp_msg(MSGT_DECAUDIO,MSGL_ERR, MSGTR_CantOpenCodec);
|
|
return 0;
|
|
}
|
|
mp_msg(MSGT_DECAUDIO,MSGL_V,"INFO: libavcodec init OK!\n");
|
|
|
|
// Decode at least 1 byte: (to get header filled)
|
|
x=decode_audio(sh_audio,sh_audio->a_buffer,1,sh_audio->a_buffer_size);
|
|
if(x>0) sh_audio->a_buffer_len=x;
|
|
|
|
#if 1
|
|
sh_audio->channels=lavc_context->channels;
|
|
sh_audio->samplerate=lavc_context->sample_rate;
|
|
sh_audio->i_bps=lavc_context->bit_rate/8;
|
|
#else
|
|
sh_audio->channels=sh_audio->wf->nChannels;
|
|
sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
|
|
sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
static void uninit(sh_audio_t *sh)
|
|
{
|
|
if (avcodec_close(sh->context) < 0)
|
|
mp_msg(MSGT_DECVIDEO, MSGL_ERR, MSGTR_CantCloseCodec);
|
|
free(sh->context);
|
|
}
|
|
|
|
static int control(sh_audio_t *sh,int cmd,void* arg, ...)
|
|
{
|
|
// TODO ???
|
|
return CONTROL_UNKNOWN;
|
|
}
|
|
|
|
static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
|
|
{
|
|
unsigned char *start=NULL;
|
|
int y,len=-1;
|
|
while(len<minlen){
|
|
int len2=0;
|
|
int x=ds_get_packet(sh_audio->ds,&start);
|
|
if(x<=0) break; // error
|
|
y=avcodec_decode_audio(sh_audio->context,(INT16*)buf,&len2,start,x);
|
|
if(y<0){ mp_msg(MSGT_DECAUDIO,MSGL_V,"lavc_audio: error\n");break; }
|
|
if(y<x) sh_audio->ds->buffer_pos+=y-x; // put back data (HACK!)
|
|
if(len2>0){
|
|
//len=len2;break;
|
|
if(len<0) len=len2; else len+=len2;
|
|
buf+=len2;
|
|
}
|
|
mp_dbg(MSGT_DECAUDIO,MSGL_DBG2,"Decoded %d -> %d \n",y,len2);
|
|
}
|
|
return len;
|
|
}
|
|
|
|
#endif
|