avfilter/vf_identity: fix typo

[ffmpeg] / libavcodec / cbs.h

diff --git a/libavcodec/cbs.h b/libavcodec/cbs.h
index 07faf18c5b246432da7f0efd573b6416fc334ca1..f022282b75b1f5c7d0ab9fecb3b7f57f19a21278 100644 (file)
--- a/libavcodec/cbs.h
+++ b/libavcodec/cbs.h
@@ -196,7 +196,7 @@ typedef struct CodedBitstreamContext {
      * Types not in this list will be available in bitstream form only.
      * If NULL, all supported types will be decomposed.
      */
-    CodedBitstreamUnitType *decompose_unit_types;
+    const CodedBitstreamUnitType *decompose_unit_types;
     /**
      * Length of the decompose_unit_types array.
      */
@@ -236,6 +236,11 @@ extern const enum AVCodecID ff_cbs_all_codec_ids[];
 int ff_cbs_init(CodedBitstreamContext **ctx,
                 enum AVCodecID codec_id, void *log_ctx);
 
+/**
+ * Reset all internal state in a context.
+ */
+void ff_cbs_flush(CodedBitstreamContext *ctx);
+
 /**
  * Close a context and free all internal state.
  */
@@ -257,6 +262,17 @@ int ff_cbs_read_extradata(CodedBitstreamContext *ctx,
                           CodedBitstreamFragment *frag,
                           const AVCodecParameters *par);
 
+/**
+ * Read the extradata bitstream found in a codec context into a
+ * fragment, then split into units and decompose.
+ *
+ * This acts identical to ff_cbs_read_extradata() for the case where
+ * you already have a codec context.
+ */
+int ff_cbs_read_extradata_from_codec(CodedBitstreamContext *ctx,
+                                     CodedBitstreamFragment *frag,
+                                     const AVCodecContext *avctx);
+
 /**
  * Read the data bitstream from a packet into a fragment, then
  * split into units and decompose.
@@ -349,6 +365,15 @@ int ff_cbs_alloc_unit_content(CodedBitstreamUnit *unit,
                               size_t size,
                               void (*free)(void *opaque, uint8_t *content));
 
+/**
+ * Allocate a new internal content buffer matching the type of the unit.
+ *
+ * The content will be zeroed.
+ */
+int ff_cbs_alloc_unit_content2(CodedBitstreamContext *ctx,
+                               CodedBitstreamUnit *unit);
+
+
 /**
  * Allocate a new internal data buffer of the given size in the unit.
  *
@@ -391,4 +416,33 @@ void ff_cbs_delete_unit(CodedBitstreamFragment *frag,
                         int position);
 
 
+/**
+ * Make the content of a unit refcounted.
+ *
+ * If the unit is not refcounted, this will do a deep copy of the unit
+ * content to new refcounted buffers.
+ *
+ * It is not valid to call this function on a unit which does not have
+ * decomposed content.
+ */
+int ff_cbs_make_unit_refcounted(CodedBitstreamContext *ctx,
+                                CodedBitstreamUnit *unit);
+
+/**
+ * Make the content of a unit writable so that internal fields can be
+ * modified.
+ *
+ * If it is known that there are no other references to the content of
+ * the unit, does nothing and returns success.  Otherwise (including the
+ * case where the unit content is not refcounted), it does a full clone
+ * of the content (including any internal buffers) to make a new copy,
+ * and replaces the existing references inside the unit with that.
+ *
+ * It is not valid to call this function on a unit which does not have
+ * decomposed content.
+ */
+int ff_cbs_make_unit_writable(CodedBitstreamContext *ctx,
+                              CodedBitstreamUnit *unit);
+
+
 #endif /* AVCODEC_CBS_H */