/* the Music Player Daemon (MPD) * (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu) * This project's homepage is: http://www.musicpd.org * * 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 */ #include "../inputPlugin.h" #ifdef HAVE_OGG #include "../utils.h" #include "../audio.h" #include "../log.h" #include "../pcm_utils.h" #include "../inputStream.h" #include "../outputBuffer.h" #include "../replayGain.h" #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #include <vorbis/vorbisfile.h> #include <errno.h> #ifdef WORDS_BIGENDIAN #define OGG_DECODE_USE_BIGENDIAN 1 #else #define OGG_DECODE_USE_BIGENDIAN 0 #endif typedef struct _OggCallbackData { InputStream * inStream; DecoderControl * dc; } OggCallbackData; /* this is just for tag parsing for db import! */ int getOggTotalTime(char * file) { OggVorbis_File vf; FILE * oggfp; int totalTime; if(!(oggfp = fopen(file,"r"))) return -1; if(ov_open(oggfp, &vf, NULL, 0) < 0) { fclose(oggfp); return -1; } totalTime = ov_time_total(&vf,-1)+0.5; ov_clear(&vf); return totalTime; } size_t ogg_read_cb(void * ptr, size_t size, size_t nmemb, void * vdata) { size_t ret = 0; OggCallbackData * data = (OggCallbackData *)vdata; while(1) { ret = readFromInputStream(data->inStream,ptr,size,nmemb); if(ret == 0 && !inputStreamAtEOF(data->inStream) && !data->dc->stop) { my_usleep(10000); } else break; } errno = 0; /*if(ret<0) errno = ((InputStream *)inStream)->error;*/ return ret; } int ogg_seek_cb(void * vdata, ogg_int64_t offset, int whence) { OggCallbackData * data = (OggCallbackData *)vdata; return seekInputStream(data->inStream,offset,whence); } int ogg_close_cb(void * vdata) { OggCallbackData * data = (OggCallbackData *)vdata; return closeInputStream(data->inStream); } long ogg_tell_cb(void * vdata) { OggCallbackData * data = (OggCallbackData *)vdata; return (long)(data->inStream->offset); } char * ogg_parseComment(char * comment, char * needle) { int len = strlen(needle); if(strncasecmp(comment, needle, len) == 0 && *(comment+len) == '=') { return comment+len+1; } return NULL; } float ogg_getReplayGainScale(char ** comments) { int trackGainFound = 0; int albumGainFound = 0; float trackGain = 1.0; float albumGain = 1.0; float trackPeak = 0.0; float albumPeak = 0.0; char * temp; int replayGainState = getReplayGainState(); if(replayGainState == REPLAYGAIN_OFF) return 1.0; while(*comments) { if((temp = ogg_parseComment(*comments,"replaygain_track_gain"))) { trackGain = atof(temp); trackGainFound = 1; } else if((temp = ogg_parseComment(*comments, "replaygain_album_gain"))) { albumGain = atof(temp); albumGainFound = 1; } else if((temp = ogg_parseComment(*comments, "replaygain_track_peak"))) { trackPeak = atof(temp); } else if((temp = ogg_parseComment(*comments, "replaygain_album_peak"))) { albumPeak = atof(temp); } comments++; } switch(replayGainState) { case REPLAYGAIN_ALBUM: if(albumGainFound) { return computeReplayGainScale(albumGain,albumPeak); } default: return computeReplayGainScale(trackGain,trackPeak); } return 1.0; } MpdTag * oggCommentsParse(char ** comments) { MpdTag * ret = NULL; char * temp; while(*comments) { if((temp = ogg_parseComment(*comments,"artist"))) { if(!ret) ret = newMpdTag(); if(!ret->artist) { ret->artist = strdup(temp); } } else if((temp = ogg_parseComment(*comments,"title"))) { if(!ret) ret = newMpdTag(); if(!ret->title) { ret->title = strdup(temp); } } else if((temp = ogg_parseComment(*comments,"album"))) { if(!ret) ret = newMpdTag(); if(!ret->album) { ret->album = strdup(temp); } } else if((temp = ogg_parseComment(*comments,"tracknumber"))) { if(!ret) ret = newMpdTag(); if(!ret->track) { ret->track = strdup(temp); } } comments++; } return ret; } void putOggCommentsIntoDecoderControlMetadata(DecoderControl * dc, char ** comments) { MpdTag * tag; if(dc->metadataSet) return; tag = oggCommentsParse(comments); if(!tag) return; copyMpdTagToDecoderControlMetadata(dc, tag); freeMpdTag(tag); } int ogg_decode(OutputBuffer * cb, DecoderControl * dc, InputStream * inStream) { OggVorbis_File vf; ov_callbacks callbacks; OggCallbackData data; int current_section; int eof = 0; long ret; #define OGG_CHUNK_SIZE 4096 char chunk[OGG_CHUNK_SIZE]; int chunkpos = 0; long bitRate = 0; long test; float replayGainScale; char ** comments; data.inStream = inStream; data.dc = dc; callbacks.read_func = ogg_read_cb; callbacks.seek_func = ogg_seek_cb; callbacks.close_func = ogg_close_cb; callbacks.tell_func = ogg_tell_cb; if(ov_open_callbacks(&data, &vf, NULL, 0, callbacks) < 0) { closeInputStream(inStream); if(!dc->stop) { ERROR("Input does not appear to be an Ogg Vorbis stream.\n"); return -1; } else { dc->state = DECODE_STATE_STOP; dc->stop = 0; } return 0; } { vorbis_info *vi=ov_info(&vf,-1); dc->audioFormat.bits = 16; dc->audioFormat.channels = vi->channels; dc->audioFormat.sampleRate = vi->rate; getOutputAudioFormat(&(dc->audioFormat),&(cb->audioFormat)); } dc->totalTime = ov_time_total(&vf,-1); if(dc->totalTime < 0) dc->totalTime = 0; comments = ov_comment(&vf, -1)->user_comments; putOggCommentsIntoDecoderControlMetadata(dc, comments); dc->state = DECODE_STATE_DECODE; replayGainScale = ogg_getReplayGainScale(comments); while(!eof) { if(dc->seek) { if(0 == ov_time_seek_page(&vf,dc->seekWhere)) { clearOutputBuffer(cb); chunkpos = 0; } else dc->seekError = 1; dc->seek = 0; } ret = ov_read(&vf, chunk+chunkpos, OGG_CHUNK_SIZE-chunkpos, OGG_DECODE_USE_BIGENDIAN, 2, 1, ¤t_section); if(ret <= 0 && ret != OV_HOLE) { eof = 1; break; } if(ret == OV_HOLE) ret = 0; chunkpos+=ret; if(chunkpos >= OGG_CHUNK_SIZE) { if((test = ov_bitrate_instant(&vf))>0) { bitRate = test/1000; } doReplayGain(chunk,ret,&(dc->audioFormat), replayGainScale); sendDataToOutputBuffer(cb, inStream, dc, inStream->seekable, chunk, chunkpos, ov_time_tell(&vf), bitRate); if(dc->stop) break; chunkpos = 0; } } if(!dc->stop && chunkpos > 0) { sendDataToOutputBuffer(cb, NULL, dc, inStream->seekable, chunk, chunkpos, ov_time_tell(&vf), bitRate); } ov_clear(&vf); flushOutputBuffer(cb); if(dc->stop) { dc->state = DECODE_STATE_STOP; dc->stop = 0; } else dc->state = DECODE_STATE_STOP; return 0; } MpdTag * oggTagDup(char * file) { MpdTag * ret = NULL; FILE * fp; OggVorbis_File vf; fp = fopen(file,"r"); if(!fp) return NULL; if(ov_open(fp,&vf,NULL,0)<0) { fclose(fp); return NULL; } ret = oggCommentsParse(ov_comment(&vf,-1)->user_comments); if(!ret) ret = newMpdTag(); ret->time = (int)(ov_time_total(&vf,-1)+0.5); ov_clear(&vf); return ret; } char * oggSuffixes[] = {"ogg", NULL}; char * oggMimeTypes[] = {"application/ogg", NULL}; InputPlugin oggPlugin = { "ogg", NULL, NULL, ogg_decode, NULL, oggTagDup, INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE, oggSuffixes, oggMimeTypes }; #else InputPlugin oggPlugin = { NULL, NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL }; #endif