+
+/**
+ * This function will return a new picture usable by a decoder as an output
+ * buffer. You have to release it using decoder_DeletePicture or by returning
+ * it to the caller as a pf_decode_video return value.
+ */
+VLC_API picture_t * decoder_NewPicture( decoder_t * ) VLC_USED;
+
+/**
+ * This function will release a picture create by decoder_NewPicture.
+ */
+VLC_API void decoder_DeletePicture( decoder_t *, picture_t *p_picture );
+
+/**
+ * This function will increase the picture reference count.
+ * (picture_Hold is not usable.)
+ */
+VLC_API void decoder_LinkPicture( decoder_t *, picture_t * );
+
+/**
+ * This function will decrease the picture reference count.
+ * (picture_Release is not usable.)
+ */
+VLC_API void decoder_UnlinkPicture( decoder_t *, picture_t * );
+
+/**
+ * This function notifies the audio output pipeline of a new audio output
+ * format (fmt_out.audio). If there is currently no audio output or if the
+ * audio output format has changed, a new audio output will be set up.
+ * @return 0 if the audio output is working, -1 if not. */
+static inline int decoder_UpdateAudioFormat( decoder_t *dec )
+{
+ if( dec->pf_aout_format_update != NULL )
+ return dec->pf_aout_format_update( dec );
+ else
+ return -1;
+}
+
+/**
+ * This function will return a new audio buffer usable by a decoder as an
+ * output buffer. You have to release it using decoder_DeleteAudioBuffer
+ * or by returning it to the caller as a pf_decode_audio return value.
+ */
+VLC_API block_t * decoder_NewAudioBuffer( decoder_t *, int i_size ) VLC_USED;
+
+/**
+ * This function will return a new subpicture usable by a decoder as an output
+ * buffer. You have to release it using decoder_DeleteSubpicture or by returning
+ * it to the caller as a pf_decode_sub return value.
+ */
+VLC_API subpicture_t * decoder_NewSubpicture( decoder_t *, const subpicture_updater_t * ) VLC_USED;
+
+/**
+ * This function will release a subpicture created by decoder_NewSubicture.
+ */
+VLC_API void decoder_DeleteSubpicture( decoder_t *, subpicture_t *p_subpicture );
+
+/**
+ * This function gives all input attachments at once.
+ *
+ * You MUST release the returned values
+ */
+VLC_API int decoder_GetInputAttachments( decoder_t *, input_attachment_t ***ppp_attachment, int *pi_attachment );
+
+/**
+ * This function converts a decoder timestamp into a display date comparable
+ * to mdate().
+ * You MUST use it *only* for gathering statistics about speed.
+ */
+VLC_API mtime_t decoder_GetDisplayDate( decoder_t *, mtime_t ) VLC_USED;
+
+/**
+ * This function returns the current input rate.
+ * You MUST use it *only* for gathering statistics about speed.
+ */
+VLC_API int decoder_GetDisplayRate( decoder_t * ) VLC_USED;
+