lavfi/buffersink: add accessors for the stream properties.

av_buffersink_get_frame_rate() did already exist; its argument becomes const.

1 files changed, 20 insertions, 2 deletions

diff --git a/libavfilter/buffersink.h b/libavfilter/buffersink.h
index e399b91175..f51fa7c1dd 100644
--- a/libavfilter/buffersink.h
+++ b/libavfilter/buffersink.h
@@ -101,9 +101,27 @@ AVABufferSinkParams *av_abuffersink_params_alloc(void);
 void av_buffersink_set_frame_size(AVFilterContext *ctx, unsigned frame_size);
 
 /**
- * Get the frame rate of the input.
+ * @defgroup lavfi_buffersink_accessors Buffer sink accessors
+ * Get the properties of the stream
+ * @{
  */
-AVRational av_buffersink_get_frame_rate(AVFilterContext *ctx);
+
+enum AVMediaType av_buffersink_get_type                (const AVFilterContext *ctx);
+AVRational       av_buffersink_get_time_base           (const AVFilterContext *ctx);
+int              av_buffersink_get_format              (const AVFilterContext *ctx);
+
+AVRational       av_buffersink_get_frame_rate          (const AVFilterContext *ctx);
+int              av_buffersink_get_w                   (const AVFilterContext *ctx);
+int              av_buffersink_get_h                   (const AVFilterContext *ctx);
+AVRational       av_buffersink_get_sample_aspect_ratio (const AVFilterContext *ctx);
+
+int              av_buffersink_get_channels            (const AVFilterContext *ctx);
+uint64_t         av_buffersink_get_channel_layout      (const AVFilterContext *ctx);
+int              av_buffersink_get_sample_rate         (const AVFilterContext *ctx);
+
+AVBufferRef *    av_buffersink_get_hw_frames_ctx       (const AVFilterContext *ctx);
+
+/** @} */
 
 /**
  * Get a frame with filtered data from sink and put it in frame.