mpv/libmpcodecs/ad_dmo.c

127 lines
4.2 KiB
C

/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#include "options.h"
#include "mp_msg.h"
#include "ad_internal.h"
#include "libaf/reorder_ch.h"
static const ad_info_t info =
{
"Win32/DMO decoders",
"dmo",
"A'rpi",
"avifile.sf.net",
""
};
LIBAD_EXTERN(dmo)
#include "loader/dmo/DMO_AudioDecoder.h"
static int init(sh_audio_t *sh)
{
return 1;
}
static int preinit(sh_audio_t *sh_audio)
{
struct MPOpts *opts = sh_audio->opts;
DMO_AudioDecoder* ds_adec;
int chans=(opts->audio_output_channels==sh_audio->wf->nChannels) ?
opts->audio_output_channels : (sh_audio->wf->nChannels>=2 ? 2 : 1);
if(!(ds_adec=DMO_AudioDecoder_Open(sh_audio->codec->dll,&sh_audio->codec->guid,sh_audio->wf,chans)))
{
mp_tmsg(MSGT_DECAUDIO,MSGL_ERR,"ERROR: Could not open required DirectShow codec %s.\n",sh_audio->codec->dll);
return 0;
}
sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
sh_audio->channels=chans;
sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
sh_audio->samplesize=2;
sh_audio->audio_in_minsize=4*sh_audio->wf->nBlockAlign;
if(sh_audio->audio_in_minsize<8192) sh_audio->audio_in_minsize=8192;
sh_audio->audio_out_minsize=4*16384;
sh_audio->context = ds_adec;
mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/DMO audio codec init OK!\n");
return 1;
}
static void uninit(sh_audio_t *sh)
{
DMO_AudioDecoder* ds_adec = sh->context;
DMO_AudioDecoder_Destroy(ds_adec);
}
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)
{
DMO_AudioDecoder* ds_adec = sh_audio->context;
// int len=-1;
int size_in=0;
int size_out=0;
int srcsize=DMO_AudioDecoder_GetSrcSize(ds_adec, maxlen);
mp_msg(MSGT_DECAUDIO,MSGL_DBG3,"DMO says: srcsize=%d (buffsize=%d) out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,maxlen);
if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
if(sh_audio->a_in_buffer_len<srcsize){
sh_audio->a_in_buffer_len+=
demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
srcsize-sh_audio->a_in_buffer_len);
}
DMO_AudioDecoder_Convert(ds_adec, sh_audio->a_in_buffer,sh_audio->a_in_buffer_len,
buf,maxlen, &size_in,&size_out);
mp_dbg(MSGT_DECAUDIO,MSGL_DBG2,"DMO: 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));
if(size_in>=sh_audio->a_in_buffer_len){
sh_audio->a_in_buffer_len=0;
} else {
sh_audio->a_in_buffer_len-=size_in;
memmove(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[size_in],sh_audio->a_in_buffer_len);
}
if (size_out > 0 && sh_audio->channels >= 5) {
reorder_channel_nch(buf, AF_CHANNEL_LAYOUT_WAVEEX_DEFAULT,
AF_CHANNEL_LAYOUT_MPLAYER_DEFAULT,
sh_audio->channels,
size_out / sh_audio->samplesize,
sh_audio->samplesize);
}
// len=size_out;
return size_out;
}