doc/filters: document new feature

[ffmpeg] / libavcodec / internal.h

diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 5096ffa1d9020b83e1080956284a1083dd8cc585..9db3d36acb946ac19ceeb7cb91f59f2089f7cc46 100644 (file)
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -83,7 +83,7 @@
 #define FF_QSCALE_TYPE_H264  2
 #define FF_QSCALE_TYPE_VP56  3
 
-#define FF_SANE_NB_CHANNELS 256U
+#define FF_SANE_NB_CHANNELS 512U
 
 #define FF_SIGNBIT(x) ((x) >> CHAR_BIT * sizeof(x) - 1)
 
@@ -320,11 +320,12 @@ static av_always_inline float ff_exp2fi(int x) {
  */
 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags);
 
+#define FF_REGET_BUFFER_FLAG_READONLY 1 ///< the returned buffer does not need to be writable
 /**
- * Identical in function to av_frame_make_writable(), except it uses
- * ff_get_buffer() to allocate the buffer when needed.
+ * Identical in function to ff_get_buffer(), except it reuses the existing buffer
+ * if available.
  */
-int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame);
+int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags);
 
 int ff_thread_can_start_frame(AVCodecContext *avctx);