optimize imdct_half:

[ffmpeg] / libavcodec / ac3_parser.h

diff --git a/libavcodec/ac3_parser.h b/libavcodec/ac3_parser.h
index 3f19b13dd7e9b908185f646eb0c8590b67b96517..e49492558ab7b67553d6c2521eeb5d3c052d549f 100644 (file)
--- a/libavcodec/ac3_parser.h
+++ b/libavcodec/ac3_parser.h
@@ -1,5 +1,5 @@
 /*
- * AC3 parser prototypes
+ * AC-3 parser prototypes
  * Copyright (c) 2003 Fabrice Bellard.
  * Copyright (c) 2003 Michael Niedermayer.
  *
@@ -32,6 +32,7 @@ typedef enum {
     AC3_PARSE_ERROR_SAMPLE_RATE = -3,
     AC3_PARSE_ERROR_FRAME_SIZE  = -4,
     AC3_PARSE_ERROR_FRAME_TYPE  = -5,
+    AC3_PARSE_ERROR_CRC         = -6,
 } AC3ParseError;
 
 /**
@@ -46,4 +47,15 @@ typedef enum {
  */
 int ff_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo *hdr);
 
+/**
+ * Parses AC-3 frame header and sets channel_map
+ * Parses the header up to the lfeon (channel_map in E-AC-3)
+ * element, which is the first 52, 54 or 104 bits depending
+ * on the audio coding mode.
+ * @param gbc[in] BitContext containing the first 54 bits of the frame.
+ * @param hdr[out] Pointer to struct where header info is written.
+ * @return value returned by ff_ac3_parse_header
+ */
+int ff_ac3_parse_header_full(GetBitContext *gbc, AC3HeaderInfo *hdr);
+
 #endif /* FFMPEG_AC3_PARSER_H */