From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 8 Jul 2024 16:32:18 +0000 (+0200)
Subject: aplaymidi2: Show meta data texts
X-Git-Tag: v1.2.13~46
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=68491dd464a0388d3f33e289d7b6e6e3a8c5d228;p=alsa-utils.git

aplaymidi2: Show meta data texts

Now aplaymidi2 shows the meta data texts embedded in Flex Data
messages such as copyright and lyrics.  The text output isn't
synchronized yet with the actual position, though.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/seq/aplaymidi2/aplaymidi2.c b/seq/aplaymidi2/aplaymidi2.c
index 435b7de..64e8aaa 100644
--- a/seq/aplaymidi2/aplaymidi2.c
+++ b/seq/aplaymidi2/aplaymidi2.c
@@ -288,6 +288,117 @@ static void send_ump(const uint32_t *ump, int len)
 	snd_seq_ump_event_output(seq, &ev);
 }
 
+struct flexdata_text_prefix {
+	unsigned char status_bank;
+	unsigned char status;
+	const char *prefix;
+};
+
+static struct flexdata_text_prefix text_prefix[] = {
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_PROJECT_NAME,
+	  .prefix = "Project" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_SONG_NAME,
+	  .prefix = "Song" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_MIDI_CLIP_NAME,
+	  .prefix = "MIDI Clip" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_COPYRIGHT_NOTICE,
+	  .prefix = "Copyright" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_COMPOSER_NAME,
+	  .prefix = "Composer" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_LYRICIST_NAME,
+	  .prefix = "Lyricist" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_ARRANGER_NAME,
+	  .prefix = "Arranger" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_PUBLISHER_NAME,
+	  .prefix = "Publisher" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_PRIMARY_PERFORMER,
+	  .prefix = "Performer" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_ACCOMPANY_PERFORMAER,
+	  .prefix = "Accompany Performer" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_RECORDING_DATE,
+	  .prefix = "Recording Date" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_METADATA,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_RECORDING_LOCATION,
+	  .prefix = "Recording Location" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_PERF_TEXT,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_LYRICS,
+	  .prefix = "Lyrics" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_PERF_TEXT,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_LYRICS_LANGUAGE,
+	  .prefix = "Lyrics Language" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_PERF_TEXT,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_RUBY,
+	  .prefix = "Ruby" },
+	{ .status_bank = SND_UMP_FLEX_DATA_MSG_BANK_PERF_TEXT,
+	  .status = SND_UMP_FLEX_DATA_MSG_STATUS_RUBY_LANGUAGE,
+	  .prefix = "Ruby Language" },
+	{}
+};
+
+static void show_text(const uint32_t *ump)
+{
+	static unsigned char textbuf[256];
+	static int len;
+	const snd_ump_msg_flex_data_t *fh =
+		(const snd_ump_msg_flex_data_t *)ump;
+	const char *prefix;
+	int i;
+
+	if (fh->meta.format == SND_UMP_FLEX_DATA_MSG_FORMAT_SINGLE ||
+	    fh->meta.format == SND_UMP_FLEX_DATA_MSG_FORMAT_START)
+		len = 0;
+
+	for (i = 0; i < 12 && len < (int)sizeof(textbuf); i++) {
+		textbuf[len] = fh->meta.data[i / 4] >> ((3 - (i % 4)) * 8);
+		if (!textbuf[len])
+			break;
+		switch (textbuf[len]) {
+		case 0x0a: /* end of paragraph */
+		case 0x0d: /* end of line */
+			textbuf[len] = '\n';
+			break;
+		}
+		len++;
+	}
+
+	if (fh->meta.format != SND_UMP_FLEX_DATA_MSG_FORMAT_SINGLE &&
+	    fh->meta.format != SND_UMP_FLEX_DATA_MSG_FORMAT_END)
+		return;
+
+	if (len >= (int)sizeof(textbuf))
+		len = sizeof(textbuf) - 1;
+	textbuf[len] = 0;
+
+	prefix = NULL;
+	for (i = 0; text_prefix[i].status_bank; i++) {
+		if (text_prefix[i].status_bank == fh->meta.status_bank &&
+		    text_prefix[i].status == fh->meta.status) {
+			prefix = text_prefix[i].prefix;
+			break;
+		}
+	}
+
+	if (prefix) {
+		printf("%s: %s\n", prefix, textbuf);
+	} else {
+		printf("(%d:%d): %s\n", fh->meta.status_bank, fh->meta.status,
+		       textbuf);
+	}
+
+	len = 0;
+}
+
 /* play the given MIDI Clip File content */
 static void play_midi(FILE *file)
 {
@@ -318,6 +429,12 @@ static void play_midi(FILE *file)
 				set_tempo(fh->set_tempo.tempo);
 				continue;
 			}
+
+			if (fh->meta.status_bank == SND_UMP_FLEX_DATA_MSG_BANK_METADATA ||
+			    fh->meta.status_bank == SND_UMP_FLEX_DATA_MSG_BANK_PERF_TEXT) {
+				show_text(ump);
+				continue;
+			}
 		} else if (h->type == SND_UMP_MSG_TYPE_STREAM) {
 			const snd_ump_msg_stream_t *sh =
 				(const snd_ump_msg_stream_t *)ump;