AUDIODATA_EXPORT
float* readaudio(const char *filename, const int sr, float *sigbuf, unsigned int *buflen,\
const float nbsecs, AudioMetaData *mdata, int *error)
{
long orig_sr;
unsigned int orig_length = 0;
float *inbuffer = NULL;
*error = PHERR_SUCCESS;
if (filename == NULL || buflen == NULL) {
*error = PHERR_NULLARG;
return NULL;
}
if (mdata) init_mdata(mdata);
const char *suffix = strrchr(filename, '.');
if (*suffix != '\0' && !strncasecmp(suffix+1, "mp3",3)) {
#ifdef HAVE_MPG123
inbuffer = readaudio_mp3(filename, &orig_sr, &orig_length, nbsecs, mdata, error);
#endif /* HAVE_MPG123 */
} else {
inbuffer = readaudio_snd(filename, &orig_sr, &orig_length, nbsecs, mdata, error);
}
if (inbuffer == NULL){
return NULL;
}
/* if no data extracted for title, use the file name */
if (mdata && mdata->title2 == NULL){
char *name = strrchr(filename, '/');
if (name == NULL) name = strchr(filename, '\\');
if (name) mdata->title2 = strdup(name+1);
}
/* resample float array */
/* set desired sr ratio */
double sr_ratio = (double)(sr)/(double)orig_sr;
if (src_is_valid_ratio(sr_ratio) == 0){
*error = PHERR_BADSR;
free(inbuffer);
return NULL;
}
/* allocate output buffer for conversion */
unsigned int outbufferlength = sr_ratio*(orig_length);
float *outbuffer = NULL;
if (sigbuf && outbufferlength < *buflen){
outbuffer = sigbuf;
} else {
outbuffer = (float*)malloc(outbufferlength*sizeof(float));
}
if (!outbuffer){
free(inbuffer);
*error = PHERR_NOBUFALLOCD;
return NULL;
}
SRC_STATE *src_state = src_new(SRC_LINEAR, 1, error);
if (!src_state){
*error = PHERR_SRCCONTXT;
free(inbuffer);
if (outbuffer != sigbuf) free(outbuffer);
return NULL;
}
SRC_DATA src_data;
src_data.data_in = inbuffer;
src_data.data_out = outbuffer;
src_data.input_frames = orig_length;
src_data.output_frames = outbufferlength;
src_data.end_of_input = SF_TRUE;
src_data.src_ratio = sr_ratio;
/* sample rate conversion */
*error = src_process(src_state, &src_data);
if (*error){
*error = PHERR_SRCPROC;
free(inbuffer);
if (outbuffer != sigbuf) free(outbuffer);
src_delete(src_state);
return NULL;
}
*buflen = outbufferlength;
src_delete(src_state);
free(inbuffer);
return outbuffer;
}
float* ph_readaudio2(const char *filename, int sr, float *sigbuf, int &buflen, const float nbsecs) {
long orig_sr;
float *inbuffer = NULL;
unsigned int inbufferlength;
buflen = 0;
const char *suffix = strrchr(filename, '.');
if (suffix == NULL) return NULL;
if (!strcasecmp(suffix+1, "mp3")) {
#ifdef HAVE_LIBMPG123
inbuffer = readaudio_mp3(filename, &orig_sr, nbsecs, &inbufferlength);
#endif /* HAVE_LIBMPG123 */
} else {
inbuffer = readaudio_snd(filename, &orig_sr, nbsecs, &inbufferlength);
}
if (inbuffer == NULL) {
return NULL;
}
/* resample float array */
/* set desired sr ratio */
double sr_ratio = (double)(sr)/(double)orig_sr;
if (src_is_valid_ratio(sr_ratio) == 0) {
free(inbuffer);
return NULL;
}
/* allocate output buffer for conversion */
unsigned int outbufferlength = sr_ratio*inbufferlength;
float *outbuffer = (float*)malloc(outbufferlength*sizeof(float));
if (!outbuffer) {
free(inbuffer);
return NULL;
}
int error;
SRC_STATE *src_state = src_new(SRC_LINEAR, 1, &error);
if (!src_state) {
free(inbuffer);
free(outbuffer);
return NULL;
}
SRC_DATA src_data;
src_data.data_in = inbuffer;
src_data.data_out = outbuffer;
src_data.input_frames = inbufferlength;
src_data.output_frames = outbufferlength;
src_data.end_of_input = SF_TRUE;
src_data.src_ratio = sr_ratio;
/* sample rate conversion */
if (error = src_process(src_state, &src_data)) {
free(inbuffer);
free(outbuffer);
src_delete(src_state);
return NULL;
}
buflen = src_data.output_frames;
src_delete(src_state);
free(inbuffer);
return outbuffer;
}
