X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmpegaudio.h;h=d0461526bac2ee5850d03716336fc9435287af0a;hb=9d14ffbccee7e6e3f521aa0aa543d9e61b07514f;hp=d6a94ad9d0877c094bb42809b51973a9eb80fe0b;hpb=4bd8e17c8d371dc05af63b15c11342e40184df61;p=ffmpeg

diff --git a/libavcodec/mpegaudio.h b/libavcodec/mpegaudio.h
index d6a94ad9d08..d0461526bac 100644
--- a/libavcodec/mpegaudio.h
+++ b/libavcodec/mpegaudio.h
@@ -26,6 +26,7 @@
 #ifndef MPEGAUDIO_H
 #define MPEGAUDIO_H
 
+#include "avcodec.h"
 #include "bitstream.h"
 #include "dsputil.h"
 
@@ -61,6 +62,10 @@
 #define WFRAC_BITS  14   /* fractional bits for window */
 #endif
 
+#define FRAC_ONE    (1 << FRAC_BITS)
+
+#define FIX(a)   ((int)((a) * FRAC_ONE))
+
 #if defined(USE_HIGHPRECISION) && defined(CONFIG_AUDIO_NONSHORT)
 typedef int32_t OUT_INT;
 #define OUT_MAX INT32_MAX
@@ -115,8 +120,15 @@ typedef struct MPADecodeContext {
     AVCodecContext* avctx;
 } MPADecodeContext;
 
-int l2_select_table(int bitrate, int nb_channels, int freq, int lsf);
-int mpa_decode_header(AVCodecContext *avctx, uint32_t head, int *sample_rate);
+/* 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);
 void ff_mpa_synth_init(MPA_INT *window);
 void ff_mpa_synth_filter(MPA_INT *synth_buf_ptr, int *synth_buf_offset,
                          MPA_INT *window, int *dither_state,