configure: Group all hwaccels together in a separate variable

[ffmpeg] / libavfilter / avfilter.h

diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index aaf86e9c97139176315594cb3bdf76b0cee62268..c5f8d56297715265057d7e226574989c6901fac2 100644 (file)
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -195,9 +195,21 @@ AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask);
  * buffer, the buffer itself is also automatically freed.
  *
  * @param ref reference to the buffer, may be NULL
+ *
+ * @note it is recommended to use avfilter_unref_bufferp() instead of this
+ * function
  */
 void avfilter_unref_buffer(AVFilterBufferRef *ref);
 
+/**
+ * Remove a reference to a buffer and set the pointer to NULL.
+ * If this is the last reference to the buffer, the buffer itself
+ * is also automatically freed.
+ *
+ * @param ref pointer to the buffer reference
+ */
+void avfilter_unref_bufferp(AVFilterBufferRef **ref);
+
 #if FF_API_AVFILTERPAD_PUBLIC
 /**
  * A filter pad used for either input or output.
@@ -241,13 +253,9 @@ struct AVFilterPad {
     int rej_perms;
 
     /**
-     * Callback called before passing the first slice of a new frame. If
-     * NULL, the filter layer will default to storing a reference to the
-     * picture inside the link structure.
-     *
-     * Input video pads only.
+     * @deprecated unused
      */
-    void (*start_frame)(AVFilterLink *link, AVFilterBufferRef *picref);
+    int (*start_frame)(AVFilterLink *link, AVFilterBufferRef *picref);
 
     /**
      * Callback function to get a video buffer. If NULL, the filter system will
@@ -267,29 +275,26 @@ struct AVFilterPad {
                                            int nb_samples);
 
     /**
-     * Callback called after the slices of a frame are completely sent. If
-     * NULL, the filter layer will default to releasing the reference stored
-     * in the link structure during start_frame().
-     *
-     * Input video pads only.
+     * @deprecated unused
      */
-    void (*end_frame)(AVFilterLink *link);
+    int (*end_frame)(AVFilterLink *link);
 
     /**
-     * Slice drawing callback. This is where a filter receives video data
-     * and should do its processing.
-     *
-     * Input video pads only.
+     * @deprecated unused
      */
-    void (*draw_slice)(AVFilterLink *link, int y, int height, int slice_dir);
+    int (*draw_slice)(AVFilterLink *link, int y, int height, int slice_dir);
 
     /**
-     * Samples filtering callback. This is where a filter receives audio data
-     * and should do its processing.
+     * Filtering callback. This is where a filter receives a frame with
+     * audio/video data and should do its processing.
      *
-     * Input audio pads only.
+     * Input pads only.
+     *
+     * @return >= 0 on success, a negative AVERROR on error. This function
+     * must ensure that samplesref is properly unreferenced on error if it
+     * hasn't been passed on to another filter.
      */
-    void (*filter_samples)(AVFilterLink *link, AVFilterBufferRef *samplesref);
+    int (*filter_frame)(AVFilterLink *link, AVFilterBufferRef *frame);
 
     /**
      * Frame poll callback. This returns the number of immediately available
@@ -455,7 +460,7 @@ struct AVFilterLink {
     int h;                      ///< agreed upon image height
     AVRational sample_aspect_ratio; ///< agreed upon sample aspect ratio
     /* These two parameters apply only to audio */
-    uint64_t channel_layout;    ///< channel layout of current buffer (see libavutil/audioconvert.h)
+    uint64_t channel_layout;    ///< channel layout of current buffer (see libavutil/channel_layout.h)
     int sample_rate;            ///< samples per second
 
     int format;                 ///< agreed upon media format
@@ -508,18 +513,6 @@ struct AVFilterLink {
         AVLINK_STARTINIT,       ///< started, but incomplete
         AVLINK_INIT             ///< complete
     } init_state;
-
-    /**
-     * The buffer reference currently being sent across the link by the source
-     * filter. This is used internally by the filter system to allow
-     * automatic copying of buffers which do not have sufficient permissions
-     * for the destination. This should not be accessed directly by the
-     * filters.
-     */
-    AVFilterBufferRef *src_buf;
-
-    AVFilterBufferRef *cur_buf;
-    AVFilterBufferRef *out_buf;
 };
 
 /**
@@ -555,7 +548,7 @@ int avfilter_config_links(AVFilterContext *filter);
  */
 AVFilterBufferRef *
 avfilter_get_video_buffer_ref_from_arrays(uint8_t *data[4], int linesize[4], int perms,
-                                          int w, int h, enum PixelFormat format);
+                                          int w, int h, enum AVPixelFormat format);
 
 /**
  * Create an audio buffer reference wrapped around an already