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authorMax Kellermann <max@duempel.org>2009-12-31 17:18:10 +0100
committerMax Kellermann <max@duempel.org>2009-12-31 18:27:48 +0100
commit6b96f5d566a6a36bfcdb70c8a27771717eb3d038 (patch)
tree4792f3d8f9e16c3ba3416e46cc613e7457428cde /src
parent7a2e07e124ebaae8ecc55de6ea24cbb10c32cebd (diff)
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decoder_plugin: added method stream_tag()
This is like tag_dup(), but works with an input_stream object instead of a file path.
Diffstat (limited to 'src')
-rw-r--r--src/decoder/sidplay_plugin.cxx1
-rw-r--r--src/decoder_plugin.h23
-rw-r--r--src/song_update.c26
3 files changed, 49 insertions, 1 deletions
diff --git a/src/decoder/sidplay_plugin.cxx b/src/decoder/sidplay_plugin.cxx
index 9bfe98f3d..79cd9cb03 100644
--- a/src/decoder/sidplay_plugin.cxx
+++ b/src/decoder/sidplay_plugin.cxx
@@ -411,6 +411,7 @@ const struct decoder_plugin sidplay_decoder_plugin = {
NULL, /* stream_decode() */
sidplay_file_decode,
sidplay_tag_dup,
+ NULL, /* stream_tag() */
sidplay_container_scan,
sidplay_suffixes,
NULL, /* mime_types */
diff --git a/src/decoder_plugin.h b/src/decoder_plugin.h
index a078540a6..3f0fde3d8 100644
--- a/src/decoder_plugin.h
+++ b/src/decoder_plugin.h
@@ -77,6 +77,13 @@ struct decoder_plugin {
struct tag *(*tag_dup)(const char *path_fs);
/**
+ * Read the tags of a stream.
+ *
+ * @return NULL if the operation has failed
+ */
+ struct tag *(*stream_tag)(struct input_stream *is);
+
+ /**
* @brief Return a "virtual" filename for subtracks in
* container formats like flac
* @param const char* pathname full pathname for the file on fs
@@ -147,7 +154,21 @@ static inline struct tag *
decoder_plugin_tag_dup(const struct decoder_plugin *plugin,
const char *path_fs)
{
- return plugin->tag_dup(path_fs);
+ return plugin->tag_dup != NULL
+ ? plugin->tag_dup(path_fs)
+ : NULL;
+}
+
+/**
+ * Read the tag of a stream.
+ */
+static inline struct tag *
+decoder_plugin_stream_tag(const struct decoder_plugin *plugin,
+ struct input_stream *is)
+{
+ return plugin->stream_tag != NULL
+ ? plugin->stream_tag(is)
+ : NULL;
}
/**
diff --git a/src/song_update.c b/src/song_update.c
index 17e1baf96..5ebc9a03e 100644
--- a/src/song_update.c
+++ b/src/song_update.c
@@ -27,12 +27,14 @@
#include "tag_ape.h"
#include "tag_id3.h"
#include "tag.h"
+#include "input_stream.h"
#include <glib.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <stdio.h>
struct song *
song_file_load(const char *path, struct directory *parent)
@@ -99,6 +101,7 @@ song_file_update(struct song *song)
char *path_fs;
const struct decoder_plugin *plugin;
struct stat st;
+ struct input_stream is = { .plugin = NULL };
assert(song_is_file(song));
@@ -129,13 +132,36 @@ song_file_update(struct song *song)
song->mtime = st.st_mtime;
do {
+ /* load file tag */
song->tag = decoder_plugin_tag_dup(plugin, path_fs);
if (song->tag != NULL)
break;
+ /* fall back to stream tag */
+ if (plugin->stream_tag != NULL) {
+ /* open the input_stream (if not already
+ open) */
+ if (is.plugin == NULL &&
+ !input_stream_open(&is, path_fs, NULL))
+ is.plugin = NULL;
+
+ /* now try the stream_tag() method */
+ if (is.plugin != NULL) {
+ song->tag = decoder_plugin_stream_tag(plugin,
+ &is);
+ if (song->tag != NULL)
+ break;
+
+ input_stream_seek(&is, 0, SEEK_SET, NULL);
+ }
+ }
+
plugin = decoder_plugin_from_suffix(suffix, plugin);
} while (plugin != NULL);
+ if (is.plugin != NULL)
+ input_stream_close(&is);
+
if (song->tag != NULL && tag_is_empty(song->tag))
song->tag = tag_fallback(path_fs, song->tag);