avcodec/dca: return standard error codes in avpriv_dca_parse_core_frame_header()

This prevents making the DCAParseError enum part of the ABI.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Reviewed-by: foo86 <foobaz86@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/dca.c

@@ -149,9 +149,14 @@ int ff_dca_parse_core_frame_header(DCACoreFrameHeader *h, GetBitContext *gb)
 int avpriv_dca_parse_core_frame_header(DCACoreFrameHeader *h, const uint8_t *buf, int size)
 {
     GetBitContext gb;
+    int ret;
 
-    if (init_get_bits8(&gb, buf, size) < 0)
-        return DCA_PARSE_ERROR_INVALIDDATA;
+    ret = init_get_bits8(&gb, buf, size);
+    if (ret < 0)
+        return ret;
 
-    return ff_dca_parse_core_frame_header(h, &gb);
+    if (ff_dca_parse_core_frame_header(h, &gb) < 0)
+        return AVERROR_INVALIDDATA;
+
+    return 0;
 }

libavcodec/dca.h

@@ -46,7 +46,6 @@ enum DCAParseError {
     DCA_PARSE_ERROR_RESERVED_BIT    = -7,
     DCA_PARSE_ERROR_LFE_FLAG        = -8,
     DCA_PARSE_ERROR_PCM_RES         = -9,
-    DCA_PARSE_ERROR_INVALIDDATA     = -10,
 };
 
 typedef struct DCACoreFrameHeader {
@@ -211,10 +210,19 @@ int avpriv_dca_convert_bitstream(const uint8_t *src, int src_size, uint8_t *dst,
 
 /**
  * Parse and validate core frame header
- * @return 0 on success, negative DCA_PARSE_ERROR_ code on failure
+ * @param[out] h    Pointer to struct where header info is written.
+ * @param[in]  buf  Pointer to the data buffer
+ * @param[in]  size Size of the data buffer
+ * @return 0 on success, negative AVERROR code on failure
  */
 int avpriv_dca_parse_core_frame_header(DCACoreFrameHeader *h, const uint8_t *buf, int size);
 
+/**
+ * Parse and validate core frame header
+ * @param[out] h   Pointer to struct where header info is written.
+ * @param[in]  gbc BitContext containing the first 120 bits of the frame.
+ * @return 0 on success, negative DCA_PARSE_ERROR_ code on failure
+ */
 int ff_dca_parse_core_frame_header(DCACoreFrameHeader *h, GetBitContext *gb);
 
 #endif /* AVCODEC_DCA_H */