/*
* WMA compatible codec
- * Copyright (c) 2002-2007 The FFmpeg Project
+ * Copyright (c) 2002-2007 The Libav Project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_WMA_H
#define AVCODEC_WMA_H
+#include "libavutil/float_dsp.h"
+
+#include "avcodec.h"
+#include "fft.h"
#include "get_bits.h"
#include "put_bits.h"
-#include "dsputil.h"
/* size of blocks */
#define BLOCK_MIN_BITS 7
#define LSP_POW_BITS 7
-//FIXME should be in wmadec
+// FIXME should be in wmadec
#define VLCBITS 9
-#define VLCMAX ((22+VLCBITS-1)/VLCBITS)
+#define VLCMAX ((22 + VLCBITS - 1) / VLCBITS)
typedef float WMACoef; ///< type for decoded coefficients, int16_t would be enough for wma 1/2
} CoefVLCTable;
typedef struct WMACodecContext {
- AVCodecContext* avctx;
+ AVCodecContext *avctx;
GetBitContext gb;
PutBitContext pb;
- 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 high_band_values[MAX_CHANNELS][HIGH_BAND_MAX_SIZE];
/* there are two possible tables for spectral coefficients */
-//FIXME the following 3 tables should be shared between decoders
+// FIXME the following 3 tables should be shared between decoders
VLC coef_vlc[2];
uint16_t *run_table[2];
float *level_table[2];
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
- DECLARE_ALIGNED_16(float, exponents[MAX_CHANNELS][BLOCK_MAX_SIZE]);
+ DECLARE_ALIGNED(32, float, exponents)[MAX_CHANNELS][BLOCK_MAX_SIZE];
float max_exponent[MAX_CHANNELS];
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]);
+ DECLARE_ALIGNED(32, float, coefs)[MAX_CHANNELS][BLOCK_MAX_SIZE];
+ DECLARE_ALIGNED(32, FFTSample, output)[BLOCK_MAX_SIZE * 2];
FFTContext mdct_ctx[BLOCK_NB_SIZES];
float *windows[BLOCK_NB_SIZES];
/* output buffer for one frame and the last for IMDCT windowing */
- DECLARE_ALIGNED_16(float, frame_out[MAX_CHANNELS][BLOCK_MAX_SIZE * 2]);
+ DECLARE_ALIGNED(32, float, frame_out)[MAX_CHANNELS][BLOCK_MAX_SIZE * 2];
/* last frame info */
- uint8_t last_superframe[MAX_CODED_SUPERFRAME_SIZE + 4]; /* padding added */
+ uint8_t last_superframe[MAX_CODED_SUPERFRAME_SIZE + AV_INPUT_BUFFER_PADDING_SIZE]; /* padding added */
int last_bitoffset;
int last_superframe_len;
float noise_table[NOISE_TAB_SIZE];
float lsp_pow_e_table[256];
float lsp_pow_m_table1[(1 << LSP_POW_BITS)];
float lsp_pow_m_table2[(1 << LSP_POW_BITS)];
- DSPContext dsp;
+ AVFloatDSPContext fdsp;
#ifdef TRACE
int frame_count;
-#endif
+#endif /* TRACE */
} WMACodecContext;
extern const uint16_t ff_wma_hgain_huffcodes[37];
extern const uint8_t ff_wma_hgain_huffbits[37];
extern const float ff_wma_lsp_codebook[NB_LSP_COEFS][16];
-extern const uint32_t ff_wma_scale_huffcodes[121];
-extern const uint8_t ff_wma_scale_huffbits[121];
+extern const uint32_t ff_aac_scalefactor_code[121];
+extern const uint8_t ff_aac_scalefactor_bits[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_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 float *level_table, const uint16_t *run_table,
- int version, WMACoef *ptr, int offset,
- int num_coefs, int block_len, int frame_len_bits,
+unsigned int ff_wma_get_large_val(GetBitContext *gb);
+int ff_wma_run_level_decode(AVCodecContext *avctx, GetBitContext *gb,
+ VLC *vlc, const float *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 */
projects / ffmpeg / blobdiff