avfiltergraph: replace AVFilterGraph.filter_count with nb_filters

[ffmpeg] / libavformat / id3v2.h

diff --git a/libavformat/id3v2.h b/libavformat/id3v2.h
index 13dec399d152240c22f4dcfd93a9031ddabfdcdf..7cb4296f111fa421d1dc34d612c94d4caffd6e70 100644 (file)
--- a/libavformat/id3v2.h
+++ b/libavformat/id3v2.h
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include "avformat.h"
+#include "internal.h"
 #include "metadata.h"
 
 #define ID3v2_HEADER_SIZE 10
@@ -45,6 +46,12 @@ enum ID3v2Encoding {
     ID3v2_ENCODING_UTF8     = 3,
 };
 
+typedef struct ID3v2EncContext {
+    int      version;       ///< ID3v2 minor version, either 3 or 4
+    int64_t size_pos;       ///< offset of the tag total size
+    int          len;       ///< size of the tag written so far
+} ID3v2EncContext;
+
 typedef struct ID3v2ExtraMeta {
     const char *tag;
     void *data;
@@ -59,17 +66,17 @@ typedef struct ID3v2ExtraMetaGEOB {
     uint8_t *data;
 } ID3v2ExtraMetaGEOB;
 
-typedef struct ID3v2EMFunc {
-    const char *tag3;
-    const char *tag4;
-    void (*read)(AVFormatContext*, AVIOContext*, int, char*, ID3v2ExtraMeta **);
-    void (*free)();
-} ID3v2EMFunc;
+typedef struct ID3v2ExtraMetaAPIC {
+    AVBufferRef *buf;
+    const char  *type;
+    uint8_t     *description;
+    enum AVCodecID id;
+} ID3v2ExtraMetaAPIC;
 
 /**
  * Detect ID3v2 Header.
  * @param buf   must be ID3v2_HEADER_SIZE byte long
- * @param magic magic bytes to identify the header, machine byte order.
+ * @param magic magic bytes to identify the header.
  * If in doubt, use ID3v2_DEFAULT_MAGIC.
  */
 int ff_id3v2_match(const uint8_t *buf, const char *magic);
@@ -82,16 +89,40 @@ int ff_id3v2_match(const uint8_t *buf, const char *magic);
 int ff_id3v2_tag_len(const uint8_t *buf);
 
 /**
- * Read an ID3v2 tag (text tags only)
+ * Read an ID3v2 tag, including supported extra metadata
+ * @param extra_meta If not NULL, extra metadata is parsed into a list of
+ * ID3v2ExtraMeta structs and *extra_meta points to the head of the list
  */
-void ff_id3v2_read(AVFormatContext *s, const char *magic);
+void ff_id3v2_read(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta);
 
 /**
- * Read an ID3v2 tag, including supported extra metadata (currently only GEOB)
- * @param extra_meta If not NULL, extra metadata is parsed into a list of
- * ID3v2ExtraMeta structs and *extra_meta points to the head of the list
+ * Initialize an ID3v2 tag.
+ */
+void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version,
+                    const char *magic);
+
+/**
+ * Convert and write all global metadata from s into an ID3v2 tag.
+ */
+int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3);
+
+/**
+ * Write an attached picture from pkt into an ID3v2 tag.
  */
-void ff_id3v2_read_all(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta);
+int ff_id3v2_write_apic(AVFormatContext *s, ID3v2EncContext *id3, AVPacket *pkt);
+
+/**
+ * Finalize an opened ID3v2 tag.
+ */
+void ff_id3v2_finish(ID3v2EncContext *id3, AVIOContext *pb);
+
+/**
+ * Write an ID3v2 tag containing all global metadata from s.
+ * @param id3v2_version Subversion of ID3v2; supported values are 3 and 4
+ * @param magic magic bytes to identify the header
+ * If in doubt, use ID3v2_DEFAULT_MAGIC.
+ */
+int ff_id3v2_write_simple(struct AVFormatContext *s, int id3v2_version, const char *magic);
 
 /**
  * Free memory allocated parsing special (non-text) metadata.
@@ -99,11 +130,14 @@ void ff_id3v2_read_all(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **e
  */
 void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta);
 
-extern const ID3v2EMFunc ff_id3v2_extra_meta_funcs[];
+/**
+ * Create a stream for each APIC (attached picture) extracted from the
+ * ID3v2 header.
+ */
+int ff_id3v2_parse_apic(AVFormatContext *s, ID3v2ExtraMeta **extra_meta);
 
 extern const AVMetadataConv ff_id3v2_34_metadata_conv[];
 extern const AVMetadataConv ff_id3v2_4_metadata_conv[];
-extern const AVMetadataConv ff_id3v2_2_metadata_conv[];
 
 /**
  * A list of text information frames allowed in both ID3 v2.3 and v2.4
@@ -122,4 +156,8 @@ extern const char ff_id3v2_4_tags[][4];
  */
 extern const char ff_id3v2_3_tags[][4];
 
+extern const CodecMime ff_id3v2_mime_tags[];
+
+extern const char *ff_id3v2_picture_types[21];
+
 #endif /* AVFORMAT_ID3V2_H */