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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#include "ad_internal.h"
#include "../roqav.h"
//#include "../adpcm.h"
static ad_info_t info =
{
"Id RoQ File Audio Decoder",
"roqaudio",
AFM_ROQAUDIO,
"Nick Kurshev",
"Mike Melanson ???"
"RoQA is an internal MPlayer FOURCC"
};
LIBAD_EXTERN(roqaudio)
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 = (sh_audio->channels * 22050) / 2;
return 1;
}
static int preinit(sh_audio_t *sh_audio)
{
/* minsize was stored in wf->nBlockAlign by the RoQ demuxer */
sh_audio->audio_out_minsize=sh_audio->wf->nBlockAlign;
sh_audio->context = roq_decode_audio_init();
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)
{
static unsigned char *ibuf = NULL;
unsigned char header_data[6];
int read_len;
// TODO!! FIXME!!!
if (!ibuf) ibuf = (unsigned char *)malloc(sh_audio->audio_out_minsize / 2);
/* figure out how much data to read */
if (demux_read_data(sh_audio->ds, header_data, 6) != 6) return -1; /* EOF */
read_len = (header_data[5] << 24) | (header_data[4] << 16) |
(header_data[3] << 8) | header_data[2];
read_len += 2; /* 16-bit arguments */
if (demux_read_data(sh_audio->ds, ibuf, read_len) != read_len) return -1;
return 2 * roq_decode_audio((unsigned short *)buf, ibuf,
read_len, sh_audio->channels, sh_audio->context);
}
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