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decoder_plugin: added method stream_tag()

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This is like tag_dup(), but works with an input_stream object instead
of a file path.
This commit is contained in:
Max Kellermann
2009-12-31 17:18:10 +01:00
parent 7a2e07e124
commit 6b96f5d566
4 changed files with 63 additions and 1 deletions
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23
src/decoder_plugin.h
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@@ -76,6 +76,13 @@ 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
@@ -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;
}
/**