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-rw-r--r--src/ReadVorbis.cpp272
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diff --git a/src/ReadVorbis.cpp b/src/ReadVorbis.cpp
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+/*
+ * readanysf~ external for pd.
+ *
+ * Copyright (C) 2003 August Black
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ReadVorbis.cpp || much code (C) by Olaf Matthes
+ * http://www.akustische-kunst.org/puredata/shout/shout.html
+ */
+
+#ifdef READ_VORBIS
+
+#include "ReadVorbis.h"
+//#include <m_pd.h>
+
+#include <iostream>
+using namespace std;
+
+
+ReadVorbis::ReadVorbis( Input *input) {
+ in = input;
+ seekable = false;
+ callbacks.read_func = read_func;
+ callbacks.seek_func = seek_func;
+ callbacks.close_func = close_func;
+ callbacks.tell_func = tell_func;
+}
+
+ReadVorbis::~ReadVorbis(){
+
+ if ( ov_clear(&vf) != 0)
+ cout << "ReadVorbis::couldn't deconstruct the vorbis file reader" << endl;
+ //if (fp != NULL) { //don't know why, but this will cause a segfault
+ // fclose(fp);
+ //}
+}
+
+
+bool ReadVorbis::Initialize( ) {
+
+ vorbis_info *vi;
+
+ if ( in == NULL ) {
+ return 0;
+ }
+ if ( in->get_format() == FORMAT_HTTP_VORBIS ) {
+ seekable = false;
+ } else
+ seekable = true;
+
+ int err = ov_open_callbacks( (void *)in, &vf, NULL, 0, callbacks);
+ if( err < 0 ) {
+ cout << "ReadVorbis:: does not appear to be an Ogg bitstream.\n" << endl;
+ switch (err) {
+ case OV_EREAD:
+ cout << "ReadVorbis:: read from media retuned an error" << endl;
+ break;
+ case OV_ENOTVORBIS:
+ cout << "ReadVorbis:: bistream is not vorbis data" << endl;
+ break;
+ case OV_EVERSION:
+ cout << "ReadVorbis:: vorbis version mismatch" << endl;
+ break;
+ case OV_EBADHEADER:
+ cout << "ReadVorbis:: invalid vorbis btistream header" << endl;
+ break;
+ case OV_EFAULT:
+ cout << "ReadVorbis:: internal logic fault" << endl;
+ break;
+ default:
+ cout << "ReadVorbis:: general error on ov_open_callbacks" << endl;
+ break;
+ }
+ return false;
+ }
+
+
+ vi=ov_info(&vf,-1);
+ samplerate = (double)vi->rate;
+ num_channels = vi->channels;
+ if ( in->get_format() == FORMAT_HTTP_VORBIS )
+ lengthinseconds = 0.0;
+ else
+ lengthinseconds = (double)ov_time_total(&vf, -1);
+ //cout << "ReadVorbis: opening url: [%s] %ld (Hz), %d chan(s)",
+ // fullurl, vi->rate, vi->channels);
+
+ return true;
+}
+
+int ReadVorbis::Decode(float *buffer, int size) {
+ long ret = 0;
+ int current_section;
+ float **buftmp;
+ int x=0;
+ if (CHUNKSIZE > (unsigned int)size) return 0;
+
+
+ ret = ov_read_float(&vf, &buftmp , CHUNKSIZE, &current_section);
+ if (ret == 0 ) {
+ // This means it is a definite end of file, lets return zero here.
+ return 0;
+ } else if (ret <= 0) {
+ switch (ret) {
+ case OV_HOLE:
+ cout << "ReadVorbis:: there was an interruption in the data. " << endl;
+ cout << "one of: garbage between pages, loss of sync followed" <<
+ " by recapture, or a corrupt page" << endl;
+ break;
+ case OV_EBADLINK:
+ cout << "ReadVorbis:: an invalid stream section was supplied " <<
+ "to libvorbisfile, or the requested link is corrupt" << endl;
+ break;
+ default:
+ cout << "ReadVorbis:: unknown error on ov_read_float" << endl;
+ break;
+ }
+
+ for(int j = 0; j < 1024; j++) {
+ buffer[x++] = 0.0;
+ }
+ return 512;
+
+ } else {
+
+ // we should check here to see if ret is larger than size!
+ for(int j = 0; j < ret; j++) {
+ buffer[x++] = buftmp[0][j];
+ if (num_channels == 2)
+ buffer[x++] = buftmp[1][j];
+ }
+ }
+ //cout << "x %d", x);
+ return x; //ret;
+
+}
+
+size_t ReadVorbis::read_func(void *ptr, size_t size, size_t nmemb, void *datasource) {
+
+ Input * tmpin = ( Input *)datasource;
+ unsigned int get = size*nmemb;
+ size_t ret;
+ // cout << "ReadVorbis:: calling read function" << endl;
+
+ ret = tmpin->Read( ptr, get);
+
+ //cout << "read from fifo, get %d, ret %d, size %d, nmemb %d",
+ //get, ret,size,nmemb );
+
+ return ret;//size*nmemb;
+}
+
+int ReadVorbis::seek_func(void *datasource, ogg_int64_t offset, int whence) {
+ // InputStream will always return -1
+ Input * tmpin = ( Input *)datasource;
+ switch ( whence ) {
+ case SEEK_SET:
+ return tmpin->SeekSet( offset );
+ break;
+ case SEEK_CUR:
+ return tmpin->SeekCur( offset );
+ break;
+ case SEEK_END:
+ return tmpin->SeekEnd( offset );
+ break;
+ default:
+ return -1;
+ break;
+ }
+
+}
+
+int ReadVorbis::close_func(void *datasource) {
+
+ cout << "ReadVorbis:: calling close function" << endl;
+ //ov_clear(&vf);
+ //return tmpin->Close();
+ return 0;
+}
+
+long ReadVorbis::tell_func(void *datasource) {
+ // InputStream will always return -1
+ Input * tmpin = ( Input *)datasource;
+ return tmpin->SeekCur( 0 );
+
+}
+
+bool ReadVorbis::Rewind() {
+ ov_pcm_seek(&vf, 0);
+ return true; // need to return true here for fill_buffer of main.cpp
+}
+
+bool ReadVorbis::PCM_seek(long bytes) {
+ int ret = ov_pcm_seek(&vf, bytes);
+ if ( ret == 0)
+ return true;
+ else {
+ switch (ret) {
+ case OV_ENOSEEK:
+ cout << "ReadVorbis:: stream not seekable" << endl;
+ break;
+ case OV_EINVAL:
+ ret = ov_pcm_seek(&vf, 0);
+ if (ret == 0)
+ return true;
+ else
+ cout << "ReadVorbis:: invalid argument" << endl;
+
+ break;
+ case OV_EREAD:
+ cout << "ReadVorbis:: read returned an error" << endl;
+ break;
+ case OV_EOF:
+ cout << "ReadVorbis:: End of File" << endl;
+ break;
+ case OV_EBADLINK:
+ cout << "ReadVorbis:: invalid stream section" << endl;
+ break;
+ default:
+ cout << "ReadVorbis:: some other seek error PCM_seek" << endl;
+ break;
+ }
+ return false;
+ }
+}
+
+bool ReadVorbis::TIME_seek(double seconds) {
+ int ret = ov_time_seek(&vf, seconds);
+ if ( ret == 0)
+ return true;
+ else {
+ switch (ret) {
+ case OV_ENOSEEK:
+ cout << "ReadVorbis:: stream not seekable" << endl;
+ break;
+ case OV_EINVAL:
+ cout << "ReadVorbis:: invalid argument" << endl;
+ break;
+ case OV_EREAD:
+ cout << "ReadVorbis:: read returned an error" << endl;
+ break;
+ case OV_EOF:
+ cout << "ReadVorbis:: End of File" << endl;
+ break;
+ case OV_EBADLINK:
+ cout << "ReadVorbis:: invalid stream section" << endl;
+ break;
+ default:
+ cout << "ReadVorbis:: some other seek error Time_seek" << endl;
+ break;
+ }
+ return false;
+ }
+}
+
+
+
+
+#endif
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