lavc: implement an ATRAC9 decoder

[ffmpeg] / libavcodec / cbs_internal.h

diff --git a/libavcodec/cbs_internal.h b/libavcodec/cbs_internal.h
index ae0b417b43afe92d5c965667a53a7598083491b6..172b8a2515983aa15c04836e44b52472e7af6e47 100644 (file)
--- a/libavcodec/cbs_internal.h
+++ b/libavcodec/cbs_internal.h
@@ -32,9 +32,9 @@ typedef struct CodedBitstreamType {
 
     // Split frag->data into coded bitstream units, creating the
     // frag->units array.  Fill data but not content on each unit.
-    // header is set if the fragment came from a header block, which
-    // may require different parsing for some codecs (e.g. the AVCC
-    // header in H.264).
+    // The header argument should be set if the fragment came from
+    // a header block, which may require different parsing for some
+    // codecs (e.g. the AVCC header in H.264).
     int (*split_fragment)(CodedBitstreamContext *ctx,
                           CodedBitstreamFragment *frag,
                           int header);
@@ -53,9 +53,6 @@ typedef struct CodedBitstreamType {
     int (*assemble_fragment)(CodedBitstreamContext *ctx,
                              CodedBitstreamFragment *frag);
 
-    // Free the content and data of a single unit.
-    void (*free_unit)(CodedBitstreamUnit *unit);
-
     // Free the codec internal state.
     void (*close)(CodedBitstreamContext *ctx);
 } CodedBitstreamType;
@@ -66,8 +63,8 @@ typedef struct CodedBitstreamType {
 void ff_cbs_trace_header(CodedBitstreamContext *ctx,
                          const char *name);
 
-void ff_cbs_trace_syntax_element(CodedBitstreamContext *ctx,
-                                 int position, const char *name,
+void ff_cbs_trace_syntax_element(CodedBitstreamContext *ctx, int position,
+                                 const char *name, const int *subscripts,
                                  const char *bitstring, int64_t value);
 
 
@@ -75,17 +72,24 @@ void ff_cbs_trace_syntax_element(CodedBitstreamContext *ctx,
 // generation of trace output.
 
 int ff_cbs_read_unsigned(CodedBitstreamContext *ctx, GetBitContext *gbc,
-                         int width, const char *name, uint32_t *write_to,
+                         int width, const char *name,
+                         const int *subscripts, uint32_t *write_to,
                          uint32_t range_min, uint32_t range_max);
 
 int ff_cbs_write_unsigned(CodedBitstreamContext *ctx, PutBitContext *pbc,
-                          int width, const char *name, uint32_t value,
+                          int width, const char *name,
+                          const int *subscripts, uint32_t value,
                           uint32_t range_min, uint32_t range_max);
 
+// The largest value representable in N bits, suitable for use as
+// range_max in the above functions.
+#define MAX_UINT_BITS(length) ((UINT64_C(1) << (length)) - 1)
+
 
 extern const CodedBitstreamType ff_cbs_type_h264;
 extern const CodedBitstreamType ff_cbs_type_h265;
 extern const CodedBitstreamType ff_cbs_type_mpeg2;
+extern const CodedBitstreamType ff_cbs_type_vp9;
 
 
 #endif /* AVCODEC_CBS_INTERNAL_H */