/* decode encoded audio; return the number of bytes decoded
* negative indicates error */
int audio_decode_audio(struct iaxc_call * call, void * out, void * data, int len,
int format, int * samples)
{
int insize = len;
int outsize = *samples;
timeLastOutput = iax_tvnow();
if ( format == 0 )
{
fprintf(stderr, "audio_decode_audio: Format is zero (should't happen)!\n");
return -1;
}
/* destroy decoder if it is incorrect type */
if ( call->decoder && call->decoder->format != format )
{
call->decoder->destroy(call->decoder);
call->decoder = NULL;
}
/* create decoder if necessary */
if ( !call->decoder )
{
call->decoder = create_codec(format);
}
if ( !call->decoder )
{
fprintf(stderr, "ERROR: Codec could not be created: %d\n",
format);
return -1;
}
if ( call->decoder->decode(call->decoder,
&insize, (unsigned char *)data,
&outsize, (short *)out) )
{
fprintf(stderr, "ERROR: decode error: %d\n", format);
return -1;
}
output_postprocess(out, *samples - outsize);
*samples = outsize;
return len - insize;
}
/* decode encoded audio; return the number of bytes decoded
* negative indicates error */
int decode_audio(struct iaxc_call *call, void *out, void *data, int len, int format, int *samples)
{
int insize = len;
int outsize = *samples;
//fprintf(stderr, "in decode_audio, format=%d\n", format);
/* update last output timestamp */
gettimeofday( &timeLastOutput, NULL ) ;
//if(len == 0) fprintf(stderr, "Interpolation voice frame\n");
if(format == 0) {
fprintf(stderr, "decode_audio: Format is zero (should't happen)!\n");
return -1;
}
/* destroy decoder if it is incorrect type */
if(call->decoder && call->decoder->format != format)
{
call->decoder->destroy(call->decoder);
call->decoder = NULL;
}
/* create encoder if necessary */
if(!call->decoder) {
call->decoder = create_codec(format);
}
if(!call->decoder) {
/* ERROR: no codec */
fprintf(stderr, "ERROR: Codec could not be created: %d\n", format);
return -1;
}
if(call->decoder->decode(call->decoder, &insize, data, &outsize, out)) {
/* ERROR: codec error */
fprintf(stderr, "ERROR: decode error: %d\n", format);
return -1;
}
output_postprocess(out, *samples-outsize);
*samples = outsize;
return len-insize;
}
