mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 11:25:10 +00:00
7c026066ea
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5341 b3059339-0415-0410-9bf9-f77b7e298cf2
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "config.h"
|
|
#include "ad_internal.h"
|
|
|
|
static ad_info_t info =
|
|
{
|
|
"Duck DK3 ADPCM decoder",
|
|
"dk3adpcm",
|
|
AFM_DK3ADPCM,
|
|
"Nick Kurshev",
|
|
"Mike Melanson",
|
|
"This format number was used by Duck Corp. but not officially registered with Microsoft"
|
|
};
|
|
|
|
LIBAD_EXTERN(dk3adpcm)
|
|
|
|
#include "adpcm.h"
|
|
|
|
static int init(sh_audio_t *sh_audio)
|
|
{
|
|
sh_audio->channels=sh_audio->wf->nChannels;
|
|
sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
|
|
sh_audio->i_bps=DK3_ADPCM_BLOCK_SIZE*
|
|
(sh_audio->channels*sh_audio->samplerate) / DK3_ADPCM_SAMPLES_PER_BLOCK;
|
|
return 1;
|
|
}
|
|
|
|
static int preinit(sh_audio_t *sh_audio)
|
|
{
|
|
sh_audio->audio_out_minsize=DK3_ADPCM_SAMPLES_PER_BLOCK * 4;
|
|
sh_audio->ds->ss_div=DK3_ADPCM_SAMPLES_PER_BLOCK;
|
|
sh_audio->ds->ss_mul=DK3_ADPCM_BLOCK_SIZE;
|
|
return 1;
|
|
}
|
|
|
|
static void uninit(sh_audio_t *sh)
|
|
{
|
|
}
|
|
|
|
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)
|
|
{
|
|
int len=-1;
|
|
unsigned char ibuf[DK3_ADPCM_BLOCK_SIZE * 2]; /* bytes / stereo frame */
|
|
if (demux_read_data(sh_audio->ds, ibuf,
|
|
DK3_ADPCM_BLOCK_SIZE * sh_audio->wf->nChannels) !=
|
|
DK3_ADPCM_BLOCK_SIZE * sh_audio->wf->nChannels)
|
|
return len; /* EOF */
|
|
len = 2 * dk3_adpcm_decode_block(
|
|
(unsigned short*)buf,ibuf);
|
|
return len;
|
|
}
|