432 lines
10 KiB
C
432 lines
10 KiB
C
/* the Music Player Daemon (MPD)
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* (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* TODO 'ogg' should probably be replaced with 'oggvorbis' in all instances */
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#include "../inputPlugin.h"
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#ifdef HAVE_OGGVORBIS
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#include "_ogg_common.h"
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#include "../utils.h"
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#include "../audio.h"
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#include "../log.h"
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#include "../pcm_utils.h"
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#include "../inputStream.h"
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#include "../outputBuffer.h"
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#include "../replayGain.h"
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef HAVE_TREMOR
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#include <vorbis/vorbisfile.h>
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#else
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#include <tremor/ivorbisfile.h>
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/* Macros to make Tremor's API look like libogg. Tremor always
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returns host-byte-order 16-bit signed data, and uses integer
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milliseconds where libogg uses double seconds.
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*/
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#define ov_read(VF, BUFFER, LENGTH, BIGENDIANP, WORD, SGNED, BITSTREAM) \
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ov_read(VF, BUFFER, LENGTH, BITSTREAM)
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#define ov_time_total(VF, I) ((double)ov_time_total(VF, I)/1000)
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#define ov_time_tell(VF) ((double)ov_time_tell(VF)/1000)
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#define ov_time_seek_page(VF, S) (ov_time_seek_page(VF, (S)*1000))
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#endif /* HAVE_TREMOR */
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#include <errno.h>
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#ifdef WORDS_BIGENDIAN
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#define OGG_DECODE_USE_BIGENDIAN 1
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#else
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#define OGG_DECODE_USE_BIGENDIAN 0
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#endif
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typedef struct _OggCallbackData {
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InputStream * inStream;
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DecoderControl * dc;
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} OggCallbackData;
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size_t ogg_read_cb(void * ptr, size_t size, size_t nmemb, void * vdata)
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{
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size_t ret = 0;
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OggCallbackData * data = (OggCallbackData *)vdata;
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while(1) {
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ret = readFromInputStream(data->inStream,ptr,size,nmemb);
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if(ret == 0 && !inputStreamAtEOF(data->inStream) &&
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!data->dc->stop)
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{
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my_usleep(10000);
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}
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else break;
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}
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errno = 0;
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/*if(ret<0) errno = ((InputStream *)inStream)->error;*/
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return ret;
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}
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int ogg_seek_cb(void * vdata, ogg_int64_t offset, int whence) {
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OggCallbackData * data = (OggCallbackData *)vdata;
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return seekInputStream(data->inStream,offset,whence);
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}
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int ogg_close_cb(void * vdata) {
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OggCallbackData * data = (OggCallbackData *)vdata;
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return closeInputStream(data->inStream);
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}
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long ogg_tell_cb(void * vdata) {
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OggCallbackData * data = (OggCallbackData *)vdata;
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return (long)(data->inStream->offset);
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}
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static inline char * ogg_parseComment(char * comment, char * needle) {
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int len = strlen(needle);
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if(strncasecmp(comment, needle, len) == 0 && *(comment+len) == '=') {
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return comment+len+1;
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}
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return NULL;
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}
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void ogg_getReplayGainInfo(char ** comments, ReplayGainInfo ** infoPtr) {
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char * temp;
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int found = 0;
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if(*infoPtr) freeReplayGainInfo(*infoPtr);
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*infoPtr = newReplayGainInfo();
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while(*comments) {
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if((temp = ogg_parseComment(*comments,"replaygain_track_gain")))
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{
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(*infoPtr)->trackGain = atof(temp);
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found = 1;
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}
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else if((temp = ogg_parseComment(*comments,
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"replaygain_album_gain")))
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{
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(*infoPtr)->albumGain = atof(temp);
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found = 1;
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}
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else if((temp = ogg_parseComment(*comments,
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"replaygain_track_peak")))
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{
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(*infoPtr)->trackPeak = atof(temp);
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found = 1;
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}
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else if((temp = ogg_parseComment(*comments,
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"replaygain_album_peak")))
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{
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(*infoPtr)->albumPeak = atof(temp);
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found = 1;
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}
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comments++;
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}
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if(!found) {
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freeReplayGainInfo(*infoPtr);
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*infoPtr = NULL;
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}
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}
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static const char * VORBIS_COMMENT_TRACK_KEY = "tracknumber";
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static const char * VORBIS_COMMENT_DISC_KEY = "discnumber";
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static inline unsigned int ogg_parseCommentAddToTag(char * comment,
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unsigned int itemType, MpdTag ** tag)
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{
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const char * needle;
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switch (itemType) {
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case TAG_ITEM_TRACK: needle = VORBIS_COMMENT_TRACK_KEY; break;
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case TAG_ITEM_DISC: needle = VORBIS_COMMENT_DISC_KEY; break;
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default: needle = mpdTagItemKeys[itemType];
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}
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unsigned int len = strlen(needle);
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if(strncasecmp(comment, needle, len) == 0 && *(comment+len) == '=') {
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if (!*tag)
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*tag = newMpdTag();
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addItemToMpdTag(*tag, itemType, comment+len+1);
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return 1;
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}
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return 0;
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}
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static MpdTag * oggCommentsParse(char ** comments) {
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MpdTag * tag = NULL;
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while(*comments) {
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int j;
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for (j = TAG_NUM_OF_ITEM_TYPES; --j >= 0; ) {
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if (ogg_parseCommentAddToTag(*comments, j, &tag))
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break;
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}
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comments++;
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}
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return tag;
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}
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void putOggCommentsIntoOutputBuffer(OutputBuffer * cb, char * streamName,
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char ** comments)
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{
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MpdTag * tag;
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tag = oggCommentsParse(comments);
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if(!tag && streamName) {
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tag = newMpdTag();
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}
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if(!tag) return;
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/*if(tag->artist) printf("Artist: %s\n", tag->artist);
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if(tag->album) printf("Album: %s\n", tag->album);
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if(tag->track) printf("Track: %s\n", tag->track);
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if(tag->title) printf("Title: %s\n", tag->title);*/
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if(streamName) {
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clearItemsFromMpdTag(tag, TAG_ITEM_NAME);
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addItemToMpdTag(tag, TAG_ITEM_NAME, streamName);
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}
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copyMpdTagToOutputBuffer(cb, tag);
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freeMpdTag(tag);
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}
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/* public */
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int oggvorbis_decode(OutputBuffer * cb, DecoderControl * dc,
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InputStream * inStream)
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{
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OggVorbis_File vf;
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ov_callbacks callbacks;
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OggCallbackData data;
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int current_section;
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int prev_section = -1;
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int eof = 0;
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long ret;
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#define OGG_CHUNK_SIZE 4096
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char chunk[OGG_CHUNK_SIZE];
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int chunkpos = 0;
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long bitRate = 0;
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long test;
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ReplayGainInfo * replayGainInfo = NULL;
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char ** comments;
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data.inStream = inStream;
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data.dc = dc;
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callbacks.read_func = ogg_read_cb;
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callbacks.seek_func = ogg_seek_cb;
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callbacks.close_func = ogg_close_cb;
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callbacks.tell_func = ogg_tell_cb;
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if((ret = ov_open_callbacks(&data, &vf, NULL, 0, callbacks)) < 0) {
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closeInputStream(inStream);
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if(!dc->stop) {
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ERROR("Error decoding Ogg Vorbis stream: ");
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switch(ret) {
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case OV_EREAD:
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ERROR("read error\n");
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break;
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case OV_ENOTVORBIS:
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ERROR("not vorbis stream\n");
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break;
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case OV_EVERSION:
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ERROR("vorbis version mismatch\n");
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break;
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case OV_EBADHEADER:
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ERROR("invalid vorbis header\n");
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break;
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case OV_EFAULT:
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ERROR("internal logic error\n");
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break;
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default:
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ERROR("unknown error\n");
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break;
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}
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return -1;
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}
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else {
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dc->state = DECODE_STATE_STOP;
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dc->stop = 0;
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}
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return 0;
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}
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dc->totalTime = ov_time_total(&vf,-1);
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if(dc->totalTime < 0) dc->totalTime = 0;
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dc->audioFormat.bits = 16;
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while(!eof) {
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if(dc->seek) {
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if(0 == ov_time_seek_page(&vf,dc->seekWhere)) {
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clearOutputBuffer(cb);
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chunkpos = 0;
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}
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else dc->seekError = 1;
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dc->seek = 0;
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}
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ret = ov_read(&vf, chunk+chunkpos,
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OGG_CHUNK_SIZE-chunkpos,
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OGG_DECODE_USE_BIGENDIAN,
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2, 1, ¤t_section);
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if(current_section!=prev_section) {
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/*printf("new song!\n");*/
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vorbis_info *vi=ov_info(&vf,-1);
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dc->audioFormat.channels = vi->channels;
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dc->audioFormat.sampleRate = vi->rate;
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if(dc->state == DECODE_STATE_START) {
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getOutputAudioFormat(&(dc->audioFormat),
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&(cb->audioFormat));
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dc->state = DECODE_STATE_DECODE;
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}
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comments = ov_comment(&vf, -1)->user_comments;
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putOggCommentsIntoOutputBuffer(cb, inStream->metaName,
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comments);
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ogg_getReplayGainInfo(comments, &replayGainInfo);
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}
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prev_section = current_section;
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if(ret <= 0 && ret != OV_HOLE) {
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eof = 1;
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break;
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}
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if(ret == OV_HOLE) ret = 0;
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chunkpos+=ret;
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if(chunkpos >= OGG_CHUNK_SIZE) {
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if((test = ov_bitrate_instant(&vf))>0) {
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bitRate = test/1000;
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}
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sendDataToOutputBuffer(cb, inStream, dc,
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inStream->seekable,
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chunk, chunkpos,
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ov_pcm_tell(&vf)/
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dc->audioFormat.sampleRate,
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bitRate,
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replayGainInfo);
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chunkpos = 0;
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if(dc->stop) break;
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}
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}
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if(!dc->stop && chunkpos > 0) {
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sendDataToOutputBuffer(cb, NULL, dc, inStream->seekable,
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chunk, chunkpos,
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ov_time_tell(&vf), bitRate, replayGainInfo);
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}
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if(replayGainInfo) freeReplayGainInfo(replayGainInfo);
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ov_clear(&vf);
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flushOutputBuffer(cb);
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if(dc->stop) {
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dc->state = DECODE_STATE_STOP;
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dc->stop = 0;
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}
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else dc->state = DECODE_STATE_STOP;
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return 0;
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}
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MpdTag * oggvorbis_TagDup(char * file) {
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MpdTag * ret = NULL;
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FILE * fp;
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OggVorbis_File vf;
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fp = fopen(file,"r");
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if(!fp)
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{
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DEBUG("oggTagDup: Failed to open file: '%s', %s\n", file, strerror(errno));
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return NULL;
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}
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if(ov_open(fp,&vf,NULL,0)<0) {
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fclose(fp);
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return NULL;
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}
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ret = oggCommentsParse(ov_comment(&vf,-1)->user_comments);
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if(!ret) ret = newMpdTag();
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ret->time = (int)(ov_time_total(&vf,-1)+0.5);
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ov_clear(&vf);
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return ret;
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}
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static unsigned int oggvorbis_try_decode(InputStream * inStream)
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{
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return (ogg_stream_type_detect(inStream) == VORBIS) ? 1 : 0;
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}
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static char * oggvorbis_Suffixes[] = {"ogg", NULL};
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static char * oggvorbis_MimeTypes[] = {"application/ogg", NULL};
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InputPlugin oggvorbisPlugin =
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{
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"oggvorbis",
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NULL,
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NULL,
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oggvorbis_try_decode,
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oggvorbis_decode,
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NULL,
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oggvorbis_TagDup,
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INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
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oggvorbis_Suffixes,
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oggvorbis_MimeTypes
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};
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#else /* !HAVE_OGGVORBIS */
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InputPlugin oggvorbisPlugin =
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{
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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0,
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NULL,
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NULL,
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};
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#endif /* HAVE_OGGVORBIS */
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