From e7a515c8b11c643332406d60a13ab1fe06d2b226 Mon Sep 17 00:00:00 2001 From: Tim Phipps Date: Sun, 21 Mar 2010 18:21:47 +0100 Subject: Add support for MixRamp tags Adds mixrampdb and mixrampdelay commands. Reads MIXRAP_START and MIXRAMP_END tags from FLAC files and overlaps instead of crossfading. --- src/decoder/flac_metadata.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'src/decoder/flac_metadata.c') diff --git a/src/decoder/flac_metadata.c b/src/decoder/flac_metadata.c index 926cd3af7..68d15f6d4 100644 --- a/src/decoder/flac_metadata.c +++ b/src/decoder/flac_metadata.c @@ -80,6 +80,49 @@ flac_parse_replay_gain(struct replay_gain_info *rgi, return found; } +static bool +flac_find_string_comment(const FLAC__StreamMetadata *block, + const char *cmnt, char **str) +{ + int offset; + size_t pos; + int len; + unsigned char tmp, *p; + + *str = NULL; + offset = FLAC__metadata_object_vorbiscomment_find_entry_from(block, 0, + cmnt); + if (offset < 0) + return false; + + pos = strlen(cmnt) + 1; /* 1 is for '=' */ + len = block->data.vorbis_comment.comments[offset].length - pos; + if (len <= 0) + return false; + + p = &block->data.vorbis_comment.comments[offset].entry[pos]; + tmp = p[len]; + p[len] = '\0'; + *str = strdup((char *)p); + p[len] = tmp; + + return true; +} + +bool +flac_parse_mixramp(char **mixramp_start, char **mixramp_end, + const FLAC__StreamMetadata *block) +{ + bool found = false; + + if (flac_find_string_comment(block, "mixramp_start", mixramp_start)) + found = true; + if (flac_find_string_comment(block, "mixramp_end", mixramp_end)) + found = true; + + return found; +} + /** * Checks if the specified name matches the entry's name, and if yes, * returns the comment value (not null-temrinated). -- cgit v1.2.3