1 files changed, 181 insertions, 0 deletions

diff --git a/lib/rbcodec/codecs/libwma/wmadec.h b/lib/rbcodec/codecs/libwma/wmadec.h
new file mode 100644
index 0000000000..76429dede1
--- /dev/null
+++ b/lib/rbcodec/codecs/libwma/wmadec.h
@@ -0,0 +1,181 @@
+/*
+ * WMA compatible decoder
+ * Copyright (c) 2002 The FFmpeg Project.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _WMADEC_H
+#define _WMADEC_H
+
+#include <codecs/libasf/asf.h>
+#include "ffmpeg_get_bits.h"
+#include "types.h"
+
+//#define TRACE
+/* size of blocks */
+#define BLOCK_MIN_BITS 7
+#define BLOCK_MAX_BITS 11
+#define BLOCK_MAX_SIZE (1 << BLOCK_MAX_BITS)
+
+#define BLOCK_NB_SIZES (BLOCK_MAX_BITS - BLOCK_MIN_BITS + 1)
+
+/* XXX: find exact max size */
+#define HIGH_BAND_MAX_SIZE 16
+
+#define NB_LSP_COEFS 10
+
+/* XXX: is it a suitable value ? */
+#define MAX_CODED_SUPERFRAME_SIZE 16384
+
+#define M_PI    3.14159265358979323846
+
+#define M_PI_F  0x3243f // in fixed 32 format
+#define TWO_M_PI_F  0x6487f   //in fixed 32
+
+#define MAX_CHANNELS 2
+
+#define NOISE_TAB_SIZE 8192
+
+#define LSP_POW_BITS 7
+
+
+#if (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024) || (CONFIG_CPU == MCF5250)
+/* PP5022/24 and MCF5250 have 128KB of IRAM. 80KB are allocated for codecs */
+#define IBSS_ATTR_WMA_LARGE_IRAM IBSS_ATTR
+#define IBSS_ATTR_WMA_XL_IRAM
+#define ICONST_ATTR_WMA_XL_IRAM
+
+#elif defined(CPU_S5L870X)
+/* S5L870x has even more IRAM. Use it. */
+#define IBSS_ATTR_WMA_LARGE_IRAM IBSS_ATTR
+#define IBSS_ATTR_WMA_XL_IRAM    IBSS_ATTR
+#define ICONST_ATTR_WMA_XL_IRAM  ICONST_ATTR
+
+#else
+/* other PP's and MCF5249 have 96KB of IRAM */
+#define IBSS_ATTR_WMA_LARGE_IRAM
+#define IBSS_ATTR_WMA_XL_IRAM
+#define ICONST_ATTR_WMA_XL_IRAM
+
+#endif
+
+
+#define VLCBITS 7       /*7 is the lowest without glitching*/
+#define VLCMAX ((22+VLCBITS-1)/VLCBITS)
+
+#define EXPVLCBITS 7
+#define EXPMAX ((19+EXPVLCBITS-1)/EXPVLCBITS)
+
+#define HGAINVLCBITS 9
+#define HGAINMAX ((13+HGAINVLCBITS-1)/HGAINVLCBITS)
+
+
+typedef struct CoefVLCTable
+{
+    int n;                               /* total number of codes */ 
+    const uint32_t *huffcodes;           /* VLC bit values */
+    const uint8_t *huffbits;             /* VLC bit size */
+    const uint16_t *levels;              /* table to build run/level tables */
+}
+CoefVLCTable;
+
+typedef struct WMADecodeContext
+{
+    GetBitContext gb;
+
+    int nb_block_sizes;  /* number of block sizes */
+
+    int sample_rate;
+    int nb_channels;
+    int bit_rate;
+    int version; /* 1 = 0x160 (WMAV1), 2 = 0x161 (WMAV2) */
+    int block_align;
+    int use_bit_reservoir;
+    int use_variable_block_len;
+    int use_exp_vlc;  /* exponent coding: 0 = lsp, 1 = vlc + delta */
+    int use_noise_coding; /* true if perceptual noise is added */
+    int byte_offset_bits;
+    VLC exp_vlc;
+    int exponent_sizes[BLOCK_NB_SIZES];
+    uint16_t exponent_bands[BLOCK_NB_SIZES][25];
+    int high_band_start[BLOCK_NB_SIZES]; /* index of first coef in high band */
+    int coefs_start;               /* first coded coef */
+    int coefs_end[BLOCK_NB_SIZES]; /* max number of coded coefficients */
+    int exponent_high_sizes[BLOCK_NB_SIZES];
+    int exponent_high_bands[BLOCK_NB_SIZES][HIGH_BAND_MAX_SIZE];
+    VLC hgain_vlc;
+
+    /* coded values in high bands */
+    int high_band_coded[MAX_CHANNELS][HIGH_BAND_MAX_SIZE];
+    int high_band_values[MAX_CHANNELS][HIGH_BAND_MAX_SIZE];
+
+    /* there are two possible tables for spectral coefficients */
+    VLC coef_vlc[2];
+    uint16_t *run_table[2];
+    uint16_t *level_table[2];
+    /* frame info */
+    int frame_len;       /* frame length in samples */
+    int frame_len_bits;  /* frame_len = 1 << frame_len_bits */
+
+    /* block info */
+    int reset_block_lengths;
+    int block_len_bits; /* log2 of current block length */
+    int next_block_len_bits; /* log2 of next block length */
+    int prev_block_len_bits; /* log2 of prev block length */
+    int block_len; /* block length in samples */
+    int block_num; /* block number in current frame */
+    int block_pos; /* current position in frame */
+    uint8_t ms_stereo; /* true if mid/side stereo mode */
+    uint8_t channel_coded[MAX_CHANNELS]; /* true if channel is coded */
+    int exponents_bsize[MAX_CHANNELS];      // log2 ratio frame/exp. length
+    fixed32 exponents[MAX_CHANNELS][BLOCK_MAX_SIZE] MEM_ALIGN_ATTR;
+    fixed32 max_exponent[MAX_CHANNELS];
+    int16_t coefs1[MAX_CHANNELS][BLOCK_MAX_SIZE];
+    fixed32 (*coefs)[MAX_CHANNELS][BLOCK_MAX_SIZE];
+    fixed32 *windows[BLOCK_NB_SIZES];
+    /* output buffer for one frame and the last for IMDCT windowing */
+    fixed32 (*frame_out)[MAX_CHANNELS][BLOCK_MAX_SIZE*2];
+
+    /* last frame info */
+    uint8_t last_superframe[MAX_CODED_SUPERFRAME_SIZE + 4] MEM_ALIGN_ATTR; /* padding added */
+    int last_bitoffset;
+    int last_superframe_len;
+    fixed32 *noise_table;
+    int noise_index;
+    fixed32 noise_mult; /* XXX: suppress that and integrate it in the noise array */
+    /* lsp_to_curve tables */
+    fixed32 lsp_cos_table[BLOCK_MAX_SIZE] MEM_ALIGN_ATTR;
+    void *lsp_pow_m_table1;
+    void *lsp_pow_m_table2;
+
+    /* State of current superframe decoding */
+    int bit_offset;
+    int nb_frames;
+    int current_frame;
+
+#ifdef TRACE
+
+    int frame_count;
+#endif
+}
+WMADecodeContext;
+
+int wma_decode_init(WMADecodeContext* s, asf_waveformatex_t *wfx);
+int wma_decode_superframe_init(WMADecodeContext* s,
+                               const uint8_t *buf, int buf_size);
+int wma_decode_superframe_frame(WMADecodeContext* s,
+                                const uint8_t *buf, int buf_size);
+#endif