mixramp: Adjust MixRamp threshold to account for ReplayGain.

src/crossfade.c

@@ -91,6 +91,7 @@ static float mixramp_interpolate(char *ramp_list, float required_db)
 
 unsigned cross_fade_calc(float duration, float total_time,
 			 float mixramp_db, float mixramp_delay,
+			 float replay_gain_db, float replay_gain_prev_db,
 			 char *mixramp_start, char *mixramp_prev_end,
 			 const struct audio_format *af,
 			 const struct audio_format *old_format,
@@ -113,10 +114,9 @@ unsigned cross_fade_calc(float duration, float total_time,
 	if (isnan(mixramp_delay) || !(mixramp_start) || !(mixramp_prev_end)) {
 		chunks = (chunks_f * duration + 0.5);
 	} else {
-		/* Calculate mixramp overlap.
-		 * FIXME factor in ReplayGain for both songs. */
-		mixramp_overlap = mixramp_interpolate(mixramp_start, mixramp_db)
-		  + mixramp_interpolate(mixramp_prev_end, mixramp_db);
+		/* Calculate mixramp overlap. */
+		mixramp_overlap = mixramp_interpolate(mixramp_start, mixramp_db - replay_gain_db)
+		  + mixramp_interpolate(mixramp_prev_end, mixramp_db - replay_gain_prev_db);
 		if (!isnan(mixramp_overlap) && (mixramp_delay <= mixramp_overlap)) {
 			chunks = (chunks_f * (mixramp_overlap - mixramp_delay));
 			g_debug("will overlap %d chunks, %fs", chunks,

src/crossfade.h

@@ -30,6 +30,8 @@ struct music_chunk;
  * @param total_time total_time the duration of the new song
  * @param mixramp_db the current mixramp_db setting
  * @param mixramp_delay the current mixramp_delay setting
+ * @param replay_gain_db the ReplayGain adjustment used for this song
+ * @param replay_gain_prev_db the ReplayGain adjustment used on the last song
  * @param mixramp_start the next songs mixramp_start tag
  * @param mixramp_prev_end the last songs mixramp_end setting
  * @param af the audio format of the new song
@@ -40,6 +42,7 @@ struct music_chunk;
  */
 unsigned cross_fade_calc(float duration, float total_time,
 			 float mixramp_db, float mixramp_delay,
+			 float replay_gain_db, float replay_gain_prev_db,
 			 char *mixramp_start, char *mixramp_prev_end,
 			 const struct audio_format *af,
 			 const struct audio_format *old_format,

src/decoder/_flac_common.c

@@ -114,6 +114,7 @@ void flac_metadata_common_cb(const FLAC__StreamMetadata * block,
 	struct replay_gain_info rgi;
 	char *mixramp_start;
 	char *mixramp_end;
+	float replay_gain_db = 0;
 
 	switch (block->type) {
 	case FLAC__METADATA_TYPE_STREAMINFO:
@@ -122,10 +123,11 @@ void flac_metadata_common_cb(const FLAC__StreamMetadata * block,
 
 	case FLAC__METADATA_TYPE_VORBIS_COMMENT:
 		if (flac_parse_replay_gain(&rgi, block))
-			decoder_replay_gain(data->decoder, &rgi);
+			replay_gain_db = decoder_replay_gain(data->decoder, &rgi);
 		if (flac_parse_mixramp(&mixramp_start, &mixramp_end, block)) {
 			g_debug("setting mixramp_tags");
-			decoder_mixramp(data->decoder, mixramp_start, mixramp_end);
+			decoder_mixramp(data->decoder, replay_gain_db,
+					mixramp_start, mixramp_end);
 		}
 
 		if (data->tag != NULL)

src/decoder/mad_decoder_plugin.c

@@ -446,13 +446,16 @@ static void mp3_parse_id3(struct mp3_data *data, size_t tagsize,
 		struct replay_gain_info rgi;
 		char *mixramp_start;
 		char *mixramp_end;
+		float replay_gain_db = 0;
+
 		if (parse_id3_replay_gain_info(&rgi, id3_tag)) {
-			decoder_replay_gain(data->decoder, &rgi);
+			replay_gain_db = decoder_replay_gain(data->decoder, &rgi);
 			data->found_replay_gain = true;
 		}
 		if (parse_id3_mixramp(&mixramp_start, &mixramp_end, id3_tag)) {
 			g_debug("setting mixramp_tags");
-			decoder_mixramp(data->decoder, mixramp_start, mixramp_end);
+			decoder_mixramp(data->decoder, replay_gain_db,
+					mixramp_start, mixramp_end);
 		}
 	}
 

src/decoder_api.c

@@ -27,6 +27,7 @@
 #include "buffer.h"
 #include "pipe.h"
 #include "chunk.h"
+#include "replay_gain_config.h"
 
 #include <glib.h>
 
@@ -403,10 +404,11 @@ decoder_tag(G_GNUC_UNUSED struct decoder *decoder, struct input_stream *is,
 	return cmd;
 }
 
-void
+float
 decoder_replay_gain(struct decoder *decoder,
 		    const struct replay_gain_info *replay_gain_info)
 {
+	float return_db = 0;
 	assert(decoder != NULL);
 
 	if (replay_gain_info != NULL) {
@@ -414,6 +416,13 @@ decoder_replay_gain(struct decoder *decoder,
 		if (++serial == 0)
 			serial = 1;
 
+		if (REPLAY_GAIN_OFF != replay_gain_mode) {
+			return_db = 20.0 * log10f(
+				replay_gain_tuple_scale(
+					&replay_gain_info->tuples[replay_gain_mode],
+					replay_gain_preamp));
+		}
+
 		decoder->replay_gain_info = *replay_gain_info;
 		decoder->replay_gain_serial = serial;
 
@@ -426,16 +435,19 @@ decoder_replay_gain(struct decoder *decoder,
 		}
 	} else
 		decoder->replay_gain_serial = 0;
+
+	return return_db;
 }
 
 void
-decoder_mixramp(struct decoder *decoder,
+decoder_mixramp(struct decoder *decoder, float replay_gain_db,
 		char *mixramp_start, char *mixramp_end)
 {
 	assert(decoder != NULL);
 	struct decoder_control *dc = decoder->dc;
 	assert(dc != NULL);
 
+	dc->replay_gain_db = replay_gain_db;
 	dc_mixramp_start(dc, mixramp_start);
 	dc_mixramp_end(dc, mixramp_end);
 }

src/decoder_api.h

@@ -152,8 +152,9 @@ decoder_tag(struct decoder *decoder, struct input_stream *is,
  * @param decoder the decoder object
  * @param rgi the replay_gain_info object; may be NULL to invalidate
  * the previous replay gain values
+ * @return the replay gain adjustment used
  */
-void
+float
 decoder_replay_gain(struct decoder *decoder,
 		    const struct replay_gain_info *replay_gain_info);
 
@@ -161,11 +162,12 @@ decoder_replay_gain(struct decoder *decoder,
  * Store MixRamp tags.
  *
  * @param decoder the decoder object
+ * @param replay_gain_db the ReplayGain adjustment used for this song
  * @param mixramp_start the mixramp_start tag; may be NULL to invalidate
  * @param mixramp_end the mixramp_end tag; may be NULL to invalidate
  */
 void
-decoder_mixramp(struct decoder *decoder,
+decoder_mixramp(struct decoder *decoder, float replay_gain_db,
 		char *mixramp_start, char *mixramp_end);
 
 #endif

src/decoder_control.c

@@ -38,6 +38,8 @@ dc_init(struct decoder_control *dc)
 	dc->state = DECODE_STATE_STOP;
 	dc->command = DECODE_COMMAND_NONE;
 
+	dc->replay_gain_db = 0;
+	dc->replay_gain_prev_db = 0;
 	dc->mixramp_start = NULL;
 	dc->mixramp_end = NULL;
 	dc->mixramp_prev_end = NULL;

src/decoder_control.h

@@ -90,6 +90,8 @@ struct decoder_control {
 	 */
 	struct music_pipe *pipe;
 
+	float replay_gain_db;
+	float replay_gain_prev_db;
 	char *mixramp_start;
 	char *mixramp_end;
 	char *mixramp_prev_end;

src/decoder_thread.c

@@ -438,6 +438,8 @@ decoder_task(gpointer arg)
 			dc_mixramp_start(dc, NULL);
 			dc_mixramp_prev_end(dc, dc->mixramp_end);
 			dc->mixramp_end = NULL; /* Don't free, it's copied above. */
+			dc->replay_gain_prev_db = dc->replay_gain_db;
+			dc->replay_gain_db = 0;
 
                         /* fall through */
 

src/player_thread.c

@@ -895,6 +895,8 @@ static void do_play(struct decoder_control *dc)
 				cross_fade_calc(pc.cross_fade_seconds, dc->total_time,
 						pc.mixramp_db,
 						pc.mixramp_delay_seconds,
+						dc->replay_gain_db,
+						dc->replay_gain_prev_db,
 						dc->mixramp_start,
 						dc->mixramp_prev_end,
 						&dc->out_audio_format,

test/read_tags.c

@@ -115,14 +115,16 @@ decoder_tag(G_GNUC_UNUSED struct decoder *decoder,
 	return DECODE_COMMAND_NONE;
 }
 
-void
+float
 decoder_replay_gain(G_GNUC_UNUSED struct decoder *decoder,
 		    G_GNUC_UNUSED const struct replay_gain_info *replay_gain_info)
 {
+	return 0.0;
 }
 
 void
 decoder_mixramp(G_GNUC_UNUSED struct decoder *decoder,
+		G_GNUC_UNUSED float replay_gain_db,
 		char *mixramp_start, char *mixramp_end)
 {
 	g_free(mixramp_start);

test/run_decoder.c

@@ -136,14 +136,16 @@ decoder_tag(G_GNUC_UNUSED struct decoder *decoder,
 	return DECODE_COMMAND_NONE;
 }
 
-void
+float
 decoder_replay_gain(G_GNUC_UNUSED struct decoder *decoder,
 		    G_GNUC_UNUSED const struct replay_gain_info *replay_gain_info)
 {
+	return 0.0;
 }
 
 void
 decoder_mixramp(G_GNUC_UNUSED struct decoder *decoder,
+		G_GNUC_UNUSED float replay_gain_db,
 		char *mixramp_start, char *mixramp_end)
 {
 	g_free(mixramp_start);