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playback: accept non-r128 tags on opus files

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Apparently certain taggers just write replaygain information to opus
files regardless of the standard. Have to accomodate it.

Resolves #372.
This commit is contained in:
Alexander Capehart 2023-02-24 21:53:17 -07:00
parent 811447126c
commit d6e7b99e1f
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GPG key ID: 37DBE3621FE9AD47
2 changed files with 28 additions and 27 deletions
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6
CHANGELOG.md
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@ -1,5 +1,11 @@
# Changelog
## dev
#### What's Improved
- Accept `REPLAYGAIN_*` adjustment information on OPUS files alongside
`R128_*` adjustments.
## 3.0.3
#### What's New

49
app/src/main/java/org/oxycblt/auxio/playback/replaygain/ReplayGainAudioProcessor.kt
View file

@ -23,7 +23,6 @@ import com.google.android.exoplayer2.Player
import com.google.android.exoplayer2.Tracks
import com.google.android.exoplayer2.audio.AudioProcessor
import com.google.android.exoplayer2.audio.BaseAudioProcessor
import com.google.android.exoplayer2.util.MimeTypes
import java.nio.ByteBuffer
import javax.inject.Inject
import kotlin.math.pow
@ -168,32 +167,28 @@ constructor(
// Most ReplayGain tags are formatted as a simple decibel adjustment in a custom
// replaygain_*_gain tag.
if (format.sampleMimeType != MimeTypes.AUDIO_OPUS) {
textTags.id3v2["TXXX:$TAG_RG_TRACK_GAIN"]
?.run { first().parseReplayGainAdjustment() }
?.let { trackGain = it }
textTags.id3v2["TXXX:$TAG_RG_ALBUM_GAIN"]
?.run { first().parseReplayGainAdjustment() }
?.let { albumGain = it }
textTags.vorbis[TAG_RG_ALBUM_GAIN]
?.run { first().parseReplayGainAdjustment() }
?.let { trackGain = it }
textTags.vorbis[TAG_RG_TRACK_GAIN]
?.run { first().parseReplayGainAdjustment() }
?.let { albumGain = it }
} else {
// Opus has it's own "r128_*_gain" ReplayGain specification, which requires dividing the
// adjustment by 256 to get the gain. This is used alongside the base adjustment
// intrinsic to the format to create the normalized adjustment. That base adjustment
// is already handled by the media framework, so we just need to apply the more
// specific adjustments.
textTags.vorbis[TAG_R128_TRACK_GAIN]
?.run { first().parseReplayGainAdjustment() }
?.let { trackGain = it / 256f }
textTags.vorbis[TAG_R128_ALBUM_GAIN]
?.run { first().parseReplayGainAdjustment() }
?.let { albumGain = it / 256f }
}
textTags.id3v2["TXXX:$TAG_RG_TRACK_GAIN"]
?.run { first().parseReplayGainAdjustment() }
?.let { trackGain = it }
textTags.id3v2["TXXX:$TAG_RG_ALBUM_GAIN"]
?.run { first().parseReplayGainAdjustment() }
?.let { albumGain = it }
textTags.vorbis[TAG_RG_ALBUM_GAIN]
?.run { first().parseReplayGainAdjustment() }
?.let { trackGain = it }
textTags.vorbis[TAG_RG_TRACK_GAIN]
?.run { first().parseReplayGainAdjustment() }
?.let { albumGain = it }
// Opus has it's own "r128_*_gain" ReplayGain specification, which requires dividing the
// adjustment by 256 to get the gain. This is used alongside the base adjustment
// intrinsic to the format to create the normalized adjustment. This is normally the only
// tag used for opus files, but some software still writes replay gain tags anyway.
textTags.vorbis[TAG_R128_TRACK_GAIN]
?.run { first().parseReplayGainAdjustment() }
?.let { trackGain = it / 256f }
textTags.vorbis[TAG_R128_ALBUM_GAIN]
?.run { first().parseReplayGainAdjustment() }
?.let { albumGain = it / 256f }
return if (trackGain != 0f || albumGain != 0f) {
Adjustment(trackGain, albumGain)