From 83ce7ff6ca6751a89a04bdb7e26eb6e392aa93d4 Mon Sep 17 00:00:00 2001 From: Justin Ruggles Date: Sat, 7 Jun 2008 22:30:31 +0000 Subject: [PATCH] use macro constants for array sizes in decode context Originally committed as revision 13700 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/ac3dec.h | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/libavcodec/ac3dec.h b/libavcodec/ac3dec.h index 196541ac49..2f716d1b3a 100644 --- a/libavcodec/ac3dec.h +++ b/libavcodec/ac3dec.h @@ -40,6 +40,9 @@ #define AC3_OUTPUT_LFEON 8 +#define AC3_MAX_COEFS 256 +#define AC3_BLOCK_SIZE 256 + typedef struct { AVCodecContext *avctx; ///< parent context GetBitContext gbc; ///< bitstream reader @@ -97,7 +100,7 @@ typedef struct { ///@defgroup exponents exponents int num_exp_groups[AC3_MAX_CHANNELS]; ///< Number of exponent groups - int8_t dexps[AC3_MAX_CHANNELS][256]; ///< decoded exponents + int8_t dexps[AC3_MAX_CHANNELS][AC3_MAX_COEFS]; ///< decoded exponents int exp_strategy[AC3_MAX_CHANNELS]; ///< exponent strategies ///@} @@ -105,8 +108,8 @@ typedef struct { AC3BitAllocParameters bit_alloc_params; ///< bit allocation parameters int snr_offset[AC3_MAX_CHANNELS]; ///< signal-to-noise ratio offsets int fast_gain[AC3_MAX_CHANNELS]; ///< fast gain values (signal-to-mask ratio) - uint8_t bap[AC3_MAX_CHANNELS][256]; ///< bit allocation pointers - int16_t psd[AC3_MAX_CHANNELS][256]; ///< scaled exponents + uint8_t bap[AC3_MAX_CHANNELS][AC3_MAX_COEFS]; ///< bit allocation pointers + int16_t psd[AC3_MAX_CHANNELS][AC3_MAX_COEFS]; ///< scaled exponents int16_t band_psd[AC3_MAX_CHANNELS][50]; ///< interpolated exponents int16_t mask[AC3_MAX_CHANNELS][50]; ///< masking curve values int dba_mode[AC3_MAX_CHANNELS]; ///< delta bit allocation mode @@ -134,16 +137,16 @@ typedef struct { float mul_bias; ///< scaling for float_to_int16 conversion ///@} - int fixed_coeffs[AC3_MAX_CHANNELS][256]; ///> fixed-point transform coefficients + int fixed_coeffs[AC3_MAX_CHANNELS][AC3_MAX_COEFS]; ///> fixed-point transform coefficients ///@defgroup arrays aligned arrays - DECLARE_ALIGNED_16(float, transform_coeffs[AC3_MAX_CHANNELS][256]); ///< transform coefficients - DECLARE_ALIGNED_16(float, delay[AC3_MAX_CHANNELS][256]); ///< delay - added to the next block - DECLARE_ALIGNED_16(float, window[256]); ///< window coefficients - DECLARE_ALIGNED_16(float, tmp_output[512]); ///< temporary storage for output before windowing - DECLARE_ALIGNED_16(float, tmp_imdct[256]); ///< temporary storage for imdct transform - DECLARE_ALIGNED_16(float, output[AC3_MAX_CHANNELS][256]); ///< output after imdct transform and windowing - DECLARE_ALIGNED_16(short, int_output[AC3_MAX_CHANNELS-1][256]); ///< final 16-bit integer output + DECLARE_ALIGNED_16(float, transform_coeffs[AC3_MAX_CHANNELS][AC3_MAX_COEFS]); ///< transform coefficients + DECLARE_ALIGNED_16(float, delay[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE]); ///< delay - added to the next block + DECLARE_ALIGNED_16(float, window[AC3_BLOCK_SIZE]); ///< window coefficients + DECLARE_ALIGNED_16(float, tmp_output[AC3_BLOCK_SIZE*2]); ///< temporary storage for output before windowing + DECLARE_ALIGNED_16(float, tmp_imdct[AC3_BLOCK_SIZE]); ///< temporary storage for imdct transform + DECLARE_ALIGNED_16(float, output[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE]); ///< output after imdct transform and windowing + DECLARE_ALIGNED_16(short, int_output[AC3_MAX_CHANNELS-1][AC3_BLOCK_SIZE]); ///< final 16-bit integer output ///@} } AC3DecodeContext;