cue: read more metadata

Make handling of metadata slightly more generic, and add reading of the
"PERFORMER" fields. There are some more fields, but for now let's leave
it at this.

TRACK-specific PERFORMER fields have to be read from the per-chapter
metadata (somewhat obscure).

Fixes #2328.

1 files changed, 23 insertions, 9 deletions

diff --git a/demux/cue.c b/demux/cue.c
index 7f2ded28c8..d72e84249b 100644
--- a/demux/cue.c
+++ b/demux/cue.c
@@ -24,6 +24,7 @@
 
 #include "misc/bstr.h"
 #include "common/common.h"
+#include "common/tags.h"
 
 #include "cue.h"
 
@@ -37,6 +38,7 @@ enum cue_command {
     CUE_TRACK,
     CUE_INDEX,
     CUE_TITLE,
+    CUE_PERFORMER,
 };
 
 static const struct {
@@ -51,7 +53,7 @@ static const struct {
     { CUE_UNUSED, "CDTEXTFILE" },
     { CUE_UNUSED, "FLAGS" },
     { CUE_UNUSED, "ISRC" },
-    { CUE_UNUSED, "PERFORMER" },
+    { CUE_PERFORMER, "PERFORMER" },
     { CUE_UNUSED, "POSTGAP" },
     { CUE_UNUSED, "PREGAP" },
     { CUE_UNUSED, "REM" },
@@ -160,17 +162,19 @@ bool mp_probe_cue(struct bstr data)
 struct cue_file *mp_parse_cue(struct bstr data)
 {
     struct cue_file *f = talloc_zero(NULL, struct cue_file);
+    f->tags = talloc_zero(f, struct mp_tags);
 
     data = skip_utf8_bom(data);
 
     char *filename = NULL;
     // Global metadata, and copied into new tracks.
     struct cue_track proto_track = {0};
-    struct cue_track *cur_track = &proto_track;
+    struct cue_track *cur_track = NULL;
 
     while (data.len) {
         struct bstr param;
-        switch (read_cmd(&data, &param)) {
+        int cmd = read_cmd(&data, &param);
+        switch (cmd) {
         case CUE_ERROR:
             talloc_free(f);
             return NULL;
@@ -179,19 +183,29 @@ struct cue_file *mp_parse_cue(struct bstr data)
             f->num_tracks += 1;
             cur_track = &f->tracks[f->num_tracks - 1];
             *cur_track = proto_track;
+            cur_track->tags = talloc_zero(f, struct mp_tags);
             break;
         }
         case CUE_TITLE:
-            cur_track->title = read_quoted(f, &param);
+        case CUE_PERFORMER: {
+            static const char *metanames[] = {
+                [CUE_TITLE] = "title",
+                [CUE_PERFORMER] = "performer",
+            };
+            struct mp_tags *tags = cur_track ? cur_track->tags : f->tags;
+            mp_tags_set_bstr(tags, bstr0(metanames[cmd]), param);
             break;
+        }
         case CUE_INDEX: {
             int type = read_int_2(&param);
             double time = read_time(&param);
-            if (type == 1) {
-                cur_track->start = time;
-                cur_track->filename = filename;
-            } else if (type == 0) {
-                cur_track->pregap_start = time;
+            if (cur_track) {
+                if (type == 1) {
+                    cur_track->start = time;
+                    cur_track->filename = filename;
+                } else if (type == 0) {
+                    cur_track->pregap_start = time;
+                }
             }
             break;
         }