avcodec/idctdsp: Avoid inclusion of avcodec.h

Not every user of idctdsp.h wants to initialize an IDCTDSPContext;
e.g. the proresdsp only uses ff_init_scantable_permutation()
and the IDCT permutation enum; similarly for cavsdsp and wmv2dsp.
Using a forward declaration here avoids an avcodec.h dependency
in the relevant files.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/libavcodec/rtjpeg.h b/libavcodec/rtjpeg.h
index d4dc074408..14befb5489 100644
--- a/libavcodec/rtjpeg.h
+++ b/libavcodec/rtjpeg.h
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 
+#include "libavutil/frame.h"
 #include "libavutil/mem_internal.h"
 #include "idctdsp.h"
 
@@ -39,7 +40,8 @@ typedef struct RTJpegContext {
     DECLARE_ALIGNED(16, int16_t, block)[64];
 } RTJpegContext;
 
-void ff_rtjpeg_init(RTJpegContext *c, AVCodecContext *avctx);
+struct AVCodecContext;
+void ff_rtjpeg_init(RTJpegContext *c, struct AVCodecContext *avctx);
 
 void ff_rtjpeg_decode_init(RTJpegContext *c, int width, int height,
                            const uint32_t *lquant, const uint32_t *cquant);