cdda: add basic open and seek function

libavformat/cdda.c

@@ -32,9 +32,11 @@
 typedef struct {
     const AVClass *class;
 
-    CDDA *cd;
+    cdrom_drive_t *cd;
+    cdrom_paranoid_t *cdp;
 
-    int playlist;
+    int paranoia_mode;
+    int track;
     int angle;
     int chapter;
     /*int region;*/
@@ -56,12 +58,67 @@ static const AVClass cdda_context_class = {
     .version        = LIBAVUTIL_VERSION_INT,
 };
 
+static int cdda_open(URLContext *h, const char *path, int flags)
+{
+    CddaContext *cd = h->priv_data;
+    int mode = cd->paranoid_mode;
+    int num_tracks;
+    const char *diskname = path;
+    cd_info_t *cd_info;
+
+    av_strstart(path, CDDA_PROTO_PREFIX, &diskname);
+
+    /* identify device */
+    cd->cd = cdda_identify(diskname, 0, NULL);
+    if (!cd->cd) {
+        av_log(h, AV_LOG_ERROR, "Can't open CDDA device.\n");
+        return AVERROR(EIO);
+    }
+
+    /* be quiet */
+    cdio_cddap_verbose_set(cd->cd, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT);
+
+    /* open cd */
+    if (cdda_open(cd->cd) != 0) {
+        av_log(h, AV_LOG_ERROR, "Can't open disc.\n");
+        cdda_close(cd->cd)
+        return AVERROR(EIO);
+    }
+
+    cd_info = cd_info_new();
+
+    /* load title list */
+    num_tracks = (int)cdda_tracks(cd->cd);
+    av_log(h, AV_LOG_INFO, "Found audio CD with %d tracks:\n", num_tracks);
+    if (num_tracks < 1) {
+        return AVERROR(EIO);
+    }
+    int i;
+    for (i = 1; i <= num_tracks; i++) {
+        long sec = cdda_track_firstsector(cd->cd, i);
+        long off = cdda_track_lastsector(cd->cd, i) - sec + 1;
+
+        av_log(h, AV_LOG_INFO, "Track %d, Length: %d sec, at posistion %d sec", i, sec, off);
+    }
+
+    /* if track was not given, select first track */
+    if (cd->track < 1) {
+        cd->track = 1;
+    }
+
+    /* select speed */
+    if (cd->speed > 0) {
+        cdda_speed_set(cd->cd, cd->speed);
+    }
+
+    return 0;
+}
 
 static int64_t bluray_seek(URLContext *h, int64_t pos, int whence)
 {
     CddaContext *cd = h->priv_data;
 
-    if (!bd || !bd->bd) {
+    if (!cd || !cd->cd) {
         return AVERROR(EFAULT);
     }
 
@@ -69,7 +126,7 @@ static int64_t bluray_seek(URLContext *h, int64_t pos, int whence)
     case SEEK_SET:
     case SEEK_CUR:
     case SEEK_END:
-        return bd_seek(bd->bd, pos);
+        return paranoia_seek(cd->cdp, pos);
 
     case AVSEEK_SIZE:
         return bd_get_title_size(bd->bd);