add number-of-colors field to PICTURE metadata block

[platform/upstream/flac.git] / include / FLAC / format.h

diff --git a/include/FLAC/format.h b/include/FLAC/format.h
index 6d09df6..fbfa7a2 100644 (file)
--- a/include/FLAC/format.h
+++ b/include/FLAC/format.h
@@ -767,6 +767,11 @@ typedef struct {
        FLAC__uint32 depth;
        /**< Picture's color depth in bits-per-pixel. */
 
+       FLAC__uint32 colors;
+       /**< For indexed palettes (like GIF), picture's number of colors (the
+        * number of palette entries), or \c 0 for non-indexed (i.e. 2^depth).
+        */
+
        FLAC__uint32 data_length;
        /**< Length of binary picture data in bytes. */
 
@@ -781,6 +786,7 @@ extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_
 extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN; /**< == 32 (bits) */
 extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN; /**< == 32 (bits) */
 extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN; /**< == 32 (bits) */
+extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_COLORS_LEN; /**< == 32 (bits) */
 extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN; /**< == 32 (bits) */