mirror of
https://github.com/mpv-player/mpv
synced 2024-12-24 07:33:46 +01:00
98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "ad_internal.h"
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static const ad_info_t info =
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{
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"Win32/DirectShow decoders",
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"dshow",
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"Nick Kurshev",
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"avifile.sf.net",
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""
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};
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LIBAD_EXTERN(dshow)
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#include "loader/dshow/DS_AudioDecoder.h"
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static int init(sh_audio_t *sh)
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{
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return 1;
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}
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static int preinit(sh_audio_t *sh_audio)
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{
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DS_AudioDecoder* ds_adec;
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if(!(ds_adec=DS_AudioDecoder_Open(sh_audio->codec->dll,&sh_audio->codec->guid,sh_audio->wf)))
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{
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mp_tmsg(MSGT_DECAUDIO,MSGL_ERR,"ERROR: Could not open required DirectShow codec %s.\n",sh_audio->codec->dll);
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return 0;
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}
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sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
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sh_audio->channels=sh_audio->wf->nChannels;
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sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
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sh_audio->samplesize=2;
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sh_audio->audio_in_minsize=2*sh_audio->wf->nBlockAlign;
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if(sh_audio->audio_in_minsize<8192) sh_audio->audio_in_minsize=8192;
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sh_audio->audio_out_minsize=16384;
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sh_audio->context = ds_adec;
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mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/DShow audio codec init OK!\n");
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return 1;
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}
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static void uninit(sh_audio_t *sh)
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{
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DS_AudioDecoder* ds_adec = sh->context;
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DS_AudioDecoder_Destroy(ds_adec);
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}
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static int control(sh_audio_t *sh_audio,int cmd,void* arg, ...)
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{
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int skip;
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switch(cmd)
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{
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case ADCTRL_SKIP_FRAME:
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skip=sh_audio->wf->nBlockAlign;
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if(skip<16){
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skip=(sh_audio->wf->nAvgBytesPerSec/16)&(~7);
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if(skip<16) skip=16;
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}
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demux_read_data(sh_audio->ds,NULL,skip);
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return CONTROL_TRUE;
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}
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return CONTROL_UNKNOWN;
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}
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static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
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{
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DS_AudioDecoder* ds_adec = sh_audio->context;
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// int len=-1;
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int size_in=0;
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int size_out=0;
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int srcsize=DS_AudioDecoder_GetSrcSize(ds_adec, maxlen);
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mp_msg(MSGT_DECAUDIO,MSGL_DBG3,"DShow says: srcsize=%d (buffsize=%d) out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,maxlen);
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if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
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if(sh_audio->a_in_buffer_len<srcsize){
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sh_audio->a_in_buffer_len+=
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demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
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srcsize-sh_audio->a_in_buffer_len);
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}
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DS_AudioDecoder_Convert(ds_adec, sh_audio->a_in_buffer,sh_audio->a_in_buffer_len,
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buf,maxlen, &size_in,&size_out);
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mp_dbg(MSGT_DECAUDIO,MSGL_DBG2,"DShow: audio %d -> %d converted (in_buf_len=%d of %d) %d\n",size_in,size_out,sh_audio->a_in_buffer_len,sh_audio->a_in_buffer_size,ds_tell_pts(sh_audio->ds));
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if(size_in>=sh_audio->a_in_buffer_len){
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sh_audio->a_in_buffer_len=0;
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} else {
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sh_audio->a_in_buffer_len-=size_in;
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memcpy(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[size_in],sh_audio->a_in_buffer_len);
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}
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// len=size_out;
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return size_out;
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}
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