diff --git a/libavcodec/mpegaudio.h b/libavcodec/mpegaudio.h
index c33960e987..8c6d6ef066 100644
--- a/libavcodec/mpegaudio.h
+++ b/libavcodec/mpegaudio.h
@@ -31,8 +31,6 @@
 #endif
 
 #include "avcodec.h"
-#include "get_bits.h"
-#include "dsputil.h"
 
 /* max frame size, in samples */
 #define MPA_FRAME_SIZE 1152
@@ -81,29 +79,6 @@ typedef int16_t MPA_INT;
 typedef int32_t MPA_INT;
 #endif
 
-#define BACKSTEP_SIZE 512
-#define EXTRABYTES 24
-
-/* layer 3 "granule" */
-typedef struct GranuleDef {
-    uint8_t scfsi;
-    int part2_3_length;
-    int big_values;
-    int global_gain;
-    int scalefac_compress;
-    uint8_t block_type;
-    uint8_t switch_point;
-    int table_select[3];
-    int subblock_gain[3];
-    uint8_t scalefac_scale;
-    uint8_t count1table_select;
-    int region_size[3]; /* number of huffman codes in each region */
-    int preflag;
-    int short_start, long_end; /* long/short band indexes */
-    uint8_t scale_factors[40];
-    INTFLOAT sb_hybrid[SBLIMIT * 18]; /* 576 samples */
-} GranuleDef;
-
 #define MPA_DECODE_HEADER \
     int frame_size; \
     int error_protection; \
@@ -120,36 +95,6 @@ typedef struct MPADecodeHeader {
   MPA_DECODE_HEADER
 } MPADecodeHeader;
 
-typedef struct MPADecodeContext {
-    MPA_DECODE_HEADER
-    uint8_t last_buf[2*BACKSTEP_SIZE + EXTRABYTES];
-    int last_buf_size;
-    /* next header (used in free format parsing) */
-    uint32_t free_format_next_header;
-    GetBitContext gb;
-    GetBitContext in_gb;
-    DECLARE_ALIGNED(16, MPA_INT, synth_buf)[MPA_MAX_CHANNELS][512 * 2];
-    int synth_buf_offset[MPA_MAX_CHANNELS];
-    DECLARE_ALIGNED(16, INTFLOAT, sb_samples)[MPA_MAX_CHANNELS][36][SBLIMIT];
-    INTFLOAT mdct_buf[MPA_MAX_CHANNELS][SBLIMIT * 18]; /* previous samples, for layer 3 MDCT */
-    GranuleDef granules[2][2]; /* Used in Layer 3 */
-#ifdef DEBUG
-    int frame_count;
-#endif
-    int adu_mode; ///< 0 for standard mp3, 1 for adu formatted mp3
-    int dither_state;
-    int error_recognition;
-    AVCodecContext* avctx;
-    MPADSPContext mpadsp;
-} MPADecodeContext;
-
-/* layer 3 huffman tables */
-typedef struct HuffTable {
-    int xsize;
-    const uint8_t *bits;
-    const uint16_t *codes;
-} HuffTable;
-
 int ff_mpa_l2_select_table(int bitrate, int nb_channels, int freq, int lsf);
 int ff_mpa_decode_header(AVCodecContext *avctx, uint32_t head, int *sample_rate, int *channels, int *frame_size, int *bitrate);
 
diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c
index cc193c68d0..f0d9958d2b 100644
--- a/libavcodec/mpegaudiodec.c
+++ b/libavcodec/mpegaudiodec.c
@@ -39,6 +39,52 @@
 #include "mpegaudio.h"
 #include "mpegaudiodecheader.h"
 
+#define BACKSTEP_SIZE 512
+#define EXTRABYTES 24
+
+/* layer 3 "granule" */
+typedef struct GranuleDef {
+    uint8_t scfsi;
+    int part2_3_length;
+    int big_values;
+    int global_gain;
+    int scalefac_compress;
+    uint8_t block_type;
+    uint8_t switch_point;
+    int table_select[3];
+    int subblock_gain[3];
+    uint8_t scalefac_scale;
+    uint8_t count1table_select;
+    int region_size[3]; /* number of huffman codes in each region */
+    int preflag;
+    int short_start, long_end; /* long/short band indexes */
+    uint8_t scale_factors[40];
+    INTFLOAT sb_hybrid[SBLIMIT * 18]; /* 576 samples */
+} GranuleDef;
+
+typedef struct MPADecodeContext {
+    MPA_DECODE_HEADER
+    uint8_t last_buf[2*BACKSTEP_SIZE + EXTRABYTES];
+    int last_buf_size;
+    /* next header (used in free format parsing) */
+    uint32_t free_format_next_header;
+    GetBitContext gb;
+    GetBitContext in_gb;
+    DECLARE_ALIGNED(16, MPA_INT, synth_buf)[MPA_MAX_CHANNELS][512 * 2];
+    int synth_buf_offset[MPA_MAX_CHANNELS];
+    DECLARE_ALIGNED(16, INTFLOAT, sb_samples)[MPA_MAX_CHANNELS][36][SBLIMIT];
+    INTFLOAT mdct_buf[MPA_MAX_CHANNELS][SBLIMIT * 18]; /* previous samples, for layer 3 MDCT */
+    GranuleDef granules[2][2]; /* Used in Layer 3 */
+#ifdef DEBUG
+    int frame_count;
+#endif
+    int adu_mode; ///< 0 for standard mp3, 1 for adu formatted mp3
+    int dither_state;
+    int error_recognition;
+    AVCodecContext* avctx;
+    MPADSPContext mpadsp;
+} MPADecodeContext;
+
 #if CONFIG_FLOAT
 #   define SHR(a,b)       ((a)*(1.0f/(1<<(b))))
 #   define FIXR_OLD(a)    ((int)((a) * FRAC_ONE + 0.5))
diff --git a/libavcodec/mpegaudiodectab.h b/libavcodec/mpegaudiodectab.h
index fdcf83fb88..041d1860b7 100644
--- a/libavcodec/mpegaudiodectab.h
+++ b/libavcodec/mpegaudiodectab.h
@@ -33,6 +33,13 @@
 /*******************************************************/
 /* layer 3 tables */
 
+/* layer 3 huffman tables */
+typedef struct HuffTable {
+    int xsize;
+    const uint8_t *bits;
+    const uint16_t *codes;
+} HuffTable;
+
 /* layer3 scale factor size */
 static const uint8_t slen_table[2][16] = {
     { 0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4 },