diff options
Diffstat (limited to 'src/ogg_decode.c')
| -rw-r--r-- | src/ogg_decode.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/ogg_decode.c b/src/ogg_decode.c index 709fbac23..202fd6d4b 100644 --- a/src/ogg_decode.c +++ b/src/ogg_decode.c @@ -27,6 +27,7 @@ #include "pcm_utils.h" #include "inputStream.h" #include "outputBuffer.h" +#include "replayGain.h" #include <stdio.h> #include <unistd.h> @@ -83,11 +84,70 @@ long ogg_tell_cb(void * inStream) { return ((InputStream *)inStream)->offset; } +char * ogg_parseComment(char * comment, char * needle) { + int len = strlen(needle); + + if(strncasecmp(comment,needle,len)) return comment+len; + + 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; +} + int ogg_decode(OutputBuffer * cb, AudioFormat * af, DecoderControl * dc) { OggVorbis_File vf; ov_callbacks callbacks; InputStream inStream; + callbacks.read_func = ogg_read_cb; callbacks.seek_func = ogg_seek_cb; @@ -124,6 +184,8 @@ int ogg_decode(OutputBuffer * cb, AudioFormat * af, DecoderControl * dc) int chunkpos = 0; long bitRate = 0; long test; + float replayGainScale = ogg_getReplayGainScale( + ov_comment(&vf,-1)->user_comments); while(!eof) { if(dc->seek) { @@ -141,6 +203,7 @@ int ogg_decode(OutputBuffer * cb, AudioFormat * af, DecoderControl * dc) if((test = ov_bitrate_instant(&vf))>0) { bitRate = test/1000; } + doReplayGain(chunk,ret,af,replayGainScale); sendDataToOutputBuffer(cb,dc,chunk,ret, ov_time_tell(&vf),bitRate); if(dc->stop) break; |