/*
* WMA compatible codec
- * Copyright (c) 2002-2007 The FFmpeg Project.
+ * Copyright (c) 2002-2007 The FFmpeg Project
*
* This file is part of FFmpeg.
*
#ifndef AVCODEC_WMA_H
#define AVCODEC_WMA_H
-#include "bitstream.h"
+#include "get_bits.h"
+#include "put_bits.h"
#include "dsputil.h"
/* size of blocks */
#define VLCBITS 9
#define VLCMAX ((22+VLCBITS-1)/VLCBITS)
+typedef float WMACoef; ///< type for decoded coefficients, int16_t would be enough for wma 1/2
+
typedef struct CoefVLCTable {
int n; ///< total number of codes
int max_level;
int exponents_bsize[MAX_CHANNELS]; ///< log2 ratio frame/exp. length
DECLARE_ALIGNED_16(float, exponents[MAX_CHANNELS][BLOCK_MAX_SIZE]);
float max_exponent[MAX_CHANNELS];
- int16_t coefs1[MAX_CHANNELS][BLOCK_MAX_SIZE];
+ WMACoef coefs1[MAX_CHANNELS][BLOCK_MAX_SIZE];
DECLARE_ALIGNED_16(float, coefs[MAX_CHANNELS][BLOCK_MAX_SIZE]);
DECLARE_ALIGNED_16(FFTSample, output[BLOCK_MAX_SIZE * 2]);
MDCTContext mdct_ctx[BLOCK_NB_SIZES];
extern const uint32_t ff_wma_scale_huffcodes[121];
extern const uint8_t ff_wma_scale_huffbits[121];
+int av_cold ff_wma_get_frame_len_bits(int sample_rate, int version,
+ unsigned int decode_flags);
int ff_wma_init(AVCodecContext * avctx, int flags2);
int ff_wma_total_gain_to_bits(int total_gain);
int ff_wma_end(AVCodecContext *avctx);
+unsigned int ff_wma_get_large_val(GetBitContext* gb);
+int ff_wma_run_level_decode(AVCodecContext* avctx, GetBitContext* gb,
+ VLC *vlc,
+ const uint16_t *level_table, const uint16_t *run_table,
+ int version, WMACoef *ptr, int offset,
+ int num_coefs, int block_len, int frame_len_bits,
+ int coef_nb_bits);
#endif /* AVCODEC_WMA_H */