avcodec/avcodec.h: remove doxy from the old bsf API functions

Make it clear that these are deprecated and the new API should be
used instead.

As a side effect, this slightly reduces differences with libav.

Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/avcodec.h

@@ -5407,81 +5407,39 @@ typedef struct AVBitStreamFilter {
 
 #if FF_API_OLD_BSF
 /**
- * Register a bitstream filter.
- *
- * The filter will be accessible to the application code through
- * av_bitstream_filter_next() or can be directly initialized with
- * av_bitstream_filter_init().
- *
- * @see avcodec_register_all()
+ * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
+ * is deprecated. Use the new bitstream filtering API (using AVBSFContext).
  */
 attribute_deprecated
 void av_register_bitstream_filter(AVBitStreamFilter *bsf);
-
 /**
- * Create and initialize a bitstream filter context given a bitstream
- * filter name.
- *
- * The returned context must be freed with av_bitstream_filter_close().
- *
- * @param name    the name of the bitstream filter
- * @return a bitstream filter context if a matching filter was found
- * and successfully initialized, NULL otherwise
+ * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
+ * is deprecated. Use av_bsf_get_by_name(), av_bsf_alloc(), and av_bsf_init()
+ * from the new bitstream filtering API (using AVBSFContext).
  */
 attribute_deprecated
 AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
-
 /**
- * Filter bitstream.
- *
- * This function filters the buffer buf with size buf_size, and places the
- * filtered buffer in the buffer pointed to by poutbuf.
- *
- * The output buffer must be freed by the caller.
- *
- * @param bsfc            bitstream filter context created by av_bitstream_filter_init()
- * @param avctx           AVCodecContext accessed by the filter, may be NULL.
- *                        If specified, this must point to the encoder context of the
- *                        output stream the packet is sent to.
- * @param args            arguments which specify the filter configuration, may be NULL
- * @param poutbuf         pointer which is updated to point to the filtered buffer
- * @param poutbuf_size    pointer which is updated to the filtered buffer size in bytes
- * @param buf             buffer containing the data to filter
- * @param buf_size        size in bytes of buf
- * @param keyframe        set to non-zero if the buffer to filter corresponds to a key-frame packet data
- * @return >= 0 in case of success, or a negative error code in case of failure
- *
- * If the return value is positive, an output buffer is allocated and
- * is available in *poutbuf, and is distinct from the input buffer.
- *
- * If the return value is 0, the output buffer is not allocated and
- * should be considered identical to the input buffer, or in case
- * *poutbuf was set it points to the input buffer (not necessarily to
- * its starting address). A special case is if *poutbuf was set to NULL and
- * *poutbuf_size was set to 0, which indicates the packet should be dropped.
+ * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
+ * is deprecated. Use av_bsf_send_packet() and av_bsf_receive_packet() from the
+ * new bitstream filtering API (using AVBSFContext).
  */
 attribute_deprecated
 int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
                                AVCodecContext *avctx, const char *args,
                                uint8_t **poutbuf, int *poutbuf_size,
                                const uint8_t *buf, int buf_size, int keyframe);
-
 /**
- * Release bitstream filter context.
- *
- * @param bsf the bitstream filter context created with
- * av_bitstream_filter_init(), can be NULL
+ * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
+ * is deprecated. Use av_bsf_free() from the new bitstream filtering API (using
+ * AVBSFContext).
  */
 attribute_deprecated
 void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
-
 /**
- * If f is NULL, return the first registered bitstream filter,
- * if f is non-NULL, return the next registered bitstream filter
- * after f, or NULL if f is the last one.
- *
- * This function can be used to iterate over all registered bitstream
- * filters.
+ * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
+ * is deprecated. Use av_bsf_next() from the new bitstream filtering API (using
+ * AVBSFContext).
  */
 attribute_deprecated
 const AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f);