avcodec/mathops: Move bitswap_32() to its only user

Effectively reverts eaff1aa0
given that bitswap_32 is no longer used outside of bitstream.c
since 03008c28.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/bitstream.c

@@ -35,7 +35,6 @@
 
 #include "config.h"
 #include "libavutil/avassert.h"
-#include "libavutil/bswap.h"
 #include "libavutil/error.h"
 #include "libavutil/internal.h"
 #include "libavutil/intreadwrite.h"
@@ -43,7 +42,7 @@
 #include "libavutil/macros.h"
 #include "libavutil/mem.h"
 #include "libavutil/qsort.h"
-#include "mathops.h"
+#include "libavutil/reverse.h"
 #include "put_bits.h"
 #include "vlc.h"
 
@@ -134,6 +133,14 @@ static int alloc_table(VLC *vlc, int size, int use_static)
 
 #define LOCALBUF_ELEMS 1500 // the maximum currently needed is 1296 by rv34
 
+static av_always_inline uint32_t bitswap_32(uint32_t x)
+{
+    return (uint32_t)ff_reverse[ x        & 0xFF] << 24 |
+           (uint32_t)ff_reverse[(x >> 8)  & 0xFF] << 16 |
+           (uint32_t)ff_reverse[(x >> 16) & 0xFF] << 8  |
+           (uint32_t)ff_reverse[ x >> 24];
+}
+
 typedef struct VLCcode {
     uint8_t bits;
     VLC_TYPE symbol;

libavcodec/dstdec.c

@@ -27,6 +27,7 @@
 
 #include "libavutil/intreadwrite.h"
 #include "libavutil/mem_internal.h"
+#include "libavutil/reverse.h"
 #include "codec_internal.h"
 #include "internal.h"
 #include "get_bits.h"

libavcodec/mathops.h

@@ -25,7 +25,6 @@
 #include <stdint.h>
 
 #include "libavutil/common.h"
-#include "libavutil/reverse.h"
 #include "config.h"
 
 #define MAX_NEG_CROP 1024
@@ -240,12 +239,4 @@ static inline int8_t ff_u8_to_s8(uint8_t a)
     return b.s8;
 }
 
-static av_always_inline uint32_t bitswap_32(uint32_t x)
-{
-    return (uint32_t)ff_reverse[ x        & 0xFF] << 24 |
-           (uint32_t)ff_reverse[(x >> 8)  & 0xFF] << 16 |
-           (uint32_t)ff_reverse[(x >> 16) & 0xFF] << 8  |
-           (uint32_t)ff_reverse[ x >> 24];
-}
-
 #endif /* AVCODEC_MATHOPS_H */

libavcodec/mpeg12dec.c

@@ -34,6 +34,7 @@
 #include "libavutil/imgutils.h"
 #include "libavutil/internal.h"
 #include "libavutil/mem_internal.h"
+#include "libavutil/reverse.h"
 #include "libavutil/stereo3d.h"
 #include "libavutil/timecode.h"
 

libavcodec/pcm.c

@@ -28,6 +28,7 @@
 #include "config_components.h"
 #include "libavutil/attributes.h"
 #include "libavutil/float_dsp.h"
+#include "libavutil/reverse.h"
 #include "libavutil/thread.h"
 #include "avcodec.h"
 #include "bytestream.h"

libavcodec/s302m.c

@@ -24,6 +24,7 @@
 #include "libavutil/intreadwrite.h"
 #include "libavutil/opt.h"
 #include "libavutil/log.h"
+#include "libavutil/reverse.h"
 #include "avcodec.h"
 #include "codec_internal.h"
 #include "internal.h"

libavcodec/s302menc.c

@@ -21,6 +21,7 @@
  */
 
 #include "libavutil/channel_layout.h"
+#include "libavutil/reverse.h"
 #include "avcodec.h"
 #include "codec_internal.h"
 #include "encode.h"

libavcodec/tiff.c

@@ -39,6 +39,7 @@
 #include "libavutil/intreadwrite.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/opt.h"
+#include "libavutil/reverse.h"
 #include "avcodec.h"
 #include "bytestream.h"
 #include "codec_internal.h"

libavcodec/xbmdec.c

@@ -21,6 +21,7 @@
  */
 
 #include "libavutil/avstring.h"
+#include "libavutil/reverse.h"
 
 #include "avcodec.h"
 #include "codec_internal.h"

libavcodec/xbmenc.c

@@ -20,6 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/reverse.h"
 #include "avcodec.h"
 #include "codec_internal.h"
 #include "encode.h"