mirror of
https://github.com/mpv-player/mpv
synced 2024-12-12 01:46:16 +00:00
1b667f61ba
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7181 b3059339-0415-0410-9bf9-f77b7e298cf2
115 lines
2.4 KiB
C
115 lines
2.4 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <math.h>
|
|
|
|
#include "config.h"
|
|
|
|
#ifdef HAVE_LIBDV095
|
|
|
|
#include "img_format.h"
|
|
|
|
#include <libdv/dv.h>
|
|
#include <libdv/dv_types.h>
|
|
|
|
#include "stream.h"
|
|
#include "demuxer.h"
|
|
#include "stheader.h"
|
|
|
|
#include "ad_internal.h"
|
|
|
|
static ad_info_t info =
|
|
{
|
|
"Raw DV Audio Decoder",
|
|
"libdv",
|
|
"Alexander Neundorf <neundorf@kde.org>",
|
|
"http://libdv.sf.net",
|
|
""
|
|
};
|
|
|
|
LIBAD_EXTERN(libdv)
|
|
|
|
// defined in vd_libdv.c:
|
|
dv_decoder_t* init_global_rawdv_decoder();
|
|
|
|
static int preinit(sh_audio_t *sh_audio)
|
|
{
|
|
sh_audio->audio_out_minsize=4*DV_AUDIO_MAX_SAMPLES*2;
|
|
return 1;
|
|
}
|
|
|
|
static int16_t *audioBuffers[4]={NULL,NULL,NULL,NULL};
|
|
|
|
static int init(sh_audio_t *sh)
|
|
{
|
|
int i;
|
|
WAVEFORMATEX *h=sh->wf;
|
|
|
|
if(!h) return 0;
|
|
|
|
sh->i_bps=h->nAvgBytesPerSec;
|
|
sh->channels=h->nChannels;
|
|
sh->samplerate=h->nSamplesPerSec;
|
|
sh->samplesize=(h->wBitsPerSample+7)/8;
|
|
|
|
sh->context=init_global_rawdv_decoder();
|
|
|
|
for (i=0; i < 4; i++)
|
|
audioBuffers[i] = malloc(2*DV_AUDIO_MAX_SAMPLES);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void uninit(sh_audio_t *sh_audio)
|
|
{
|
|
int i;
|
|
for (i=0; i < 4; i++)
|
|
free(audioBuffers[i]);
|
|
}
|
|
|
|
static int control(sh_audio_t *sh,int cmd,void* arg, ...)
|
|
{
|
|
// TODO!!!
|
|
return CONTROL_UNKNOWN;
|
|
}
|
|
|
|
static int decode_audio(sh_audio_t *audio, unsigned char *buf, int minlen, int maxlen)
|
|
{
|
|
int len=0;
|
|
dv_decoder_t* decoder=audio->context; //global_rawdv_decoder;
|
|
unsigned char* dv_audio_frame=NULL;
|
|
int xx=ds_get_packet(audio->ds,&dv_audio_frame);
|
|
if(xx<=0 || !dv_audio_frame) return 0; // EOF?
|
|
|
|
dv_parse_header(decoder, dv_audio_frame);
|
|
|
|
if(xx!=decoder->frame_size)
|
|
printf("warning! audio framesize differs! read=%d hdr=%d \n",
|
|
xx, decoder->frame_size);
|
|
|
|
if (dv_decode_full_audio(decoder, dv_audio_frame,(int16_t**) audioBuffers))
|
|
{
|
|
/* Interleave the audio into a single buffer */
|
|
int i=0;
|
|
int16_t *bufP=(int16_t*)buf;
|
|
|
|
// printf("samples=%d/%d chans=%d mem=%d \n",decoder->audio->samples_this_frame,DV_AUDIO_MAX_SAMPLES,
|
|
// decoder->audio->num_channels, decoder->audio->samples_this_frame*decoder->audio->num_channels*2);
|
|
|
|
// return (44100/30)*4;
|
|
|
|
for (i=0; i < decoder->audio->samples_this_frame; i++)
|
|
{
|
|
int ch;
|
|
for (ch=0; ch < decoder->audio->num_channels; ch++)
|
|
bufP[len++] = audioBuffers[ch][i];
|
|
}
|
|
}
|
|
return len*2;
|
|
}
|
|
|
|
#endif
|
|
|