wmadec.h File Reference

Include dependency graph for wmadec.h:

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Data Structures
struct	WMADecodeContext
Defines
#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)
#define	HIGH_BAND_MAX_SIZE   16
#define	NB_LSP_COEFS   10
#define	MAX_CODED_SUPERFRAME_SIZE   16384
#define	M_PI   3.14159265358979323846
#define	M_PI_F   0x3243f
#define	TWO_M_PI_F   0x6487f
#define	MAX_CHANNELS   2
#define	NOISE_TAB_SIZE   8192
#define	LSP_POW_BITS   7
Functions
int	wma_decode_init (WMADecodeContext *s, asf_waveformatex_t *wfx)
int	wma_decode_superframe_init (WMADecodeContext *s, uint8_t *buf, int buf_size)
int	wma_decode_superframe_frame (WMADecodeContext *s, int32_t *samples, uint8_t *buf, int buf_size)

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Define Documentation

#define BLOCK_MAX_BITS   11

#define BLOCK_MAX_SIZE   (1 << BLOCK_MAX_BITS)

Referenced by DecodeFrame(), and wma_decode_block().

#define BLOCK_MIN_BITS   7

Referenced by wma_decode_init().

#define BLOCK_NB_SIZES   (BLOCK_MAX_BITS - BLOCK_MIN_BITS + 1)

#define HIGH_BAND_MAX_SIZE   16

Referenced by wma_decode_block().

#define LSP_POW_BITS   7

Referenced by pow_m1_4(), and wma_lsp_to_curve_init().

#define M_PI   3.14159265358979323846

Referenced by cache_trigo(), FilterHough(), FilterPacked(), FilterPlanar(), gaussianblur_InitDistribution(), and Generate().

#define M_PI_F   0x3243f

Referenced by wma_lsp_to_curve_init().

#define MAX_CHANNELS   2

Referenced by DecodeFrame(), and wma_decode_block().

#define MAX_CODED_SUPERFRAME_SIZE   16384

Referenced by wma_decode_superframe_frame().

#define NB_LSP_COEFS   10

Referenced by decode_exp_lsp(), and wma_lsp_to_curve().

#define NOISE_TAB_SIZE   8192

Referenced by wma_decode_block(), and wma_decode_init().

#define TWO_M_PI_F   0x6487f

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Function Documentation

int wma_decode_init	(	WMADecodeContext *	s,
		asf_waveformatex_t *	wfx
	)

References a, ASF_CODEC_ID_WMAV1, ASF_CODEC_ID_WMAV2, av_log2(), b, WMADecodeContext::bit_rate, asf_waveformatex_s::bitrate, WMADecodeContext::block_align, BLOCK_MIN_BITS, asf_waveformatex_s::blockalign, WMADecodeContext::byte_offset_bits, asf_waveformatex_s::channels, asf_waveformatex_s::codec_id, WMADecodeContext::coef_vlc, coef_vlcs, WMADecodeContext::coefs, WMADecodeContext::coefs_end, WMADecodeContext::coefs_start, coefsarray, asf_waveformatex_s::data, asf_waveformatex_s::datalen, WMADecodeContext::exp_vlc, exponent_band_22050, exponent_band_32000, exponent_band_44100, WMADecodeContext::exponent_bands, WMADecodeContext::exponent_high_bands, WMADecodeContext::exponent_high_sizes, WMADecodeContext::exponent_sizes, EXPVLCBITS, ff_mdct_init(), fixdiv32(), fixdiv64(), fixmul32(), fixtoi32, fixtoi64, WMADecodeContext::frame_len, WMADecodeContext::frame_len_bits, fsincos(), hgain_huffbits, hgain_huffcodes, WMADecodeContext::hgain_vlc, HGAINVLCBITS, WMADecodeContext::high_band_start, i, init_coef_vlc(), init_vlc(), itofix32, itofix64, WMADecodeContext::last_bitoffset, WMADecodeContext::last_superframe_len, WMADecodeContext::level_table, levtab0, levtab1, levtabarray, WMADecodeContext::mdct_ctx, mdct_init_global(), WMADecodeContext::nb_block_sizes, WMADecodeContext::nb_channels, WMADecodeContext::noise_mult, NOISE_TAB_SIZE, WMADecodeContext::noise_table, noisetable_exp, asf_waveformatex_s::rate, WMADecodeContext::reset_block_lengths, WMADecodeContext::run_table, runtab0, runtab1, runtabarray, WMADecodeContext::sample_rate, scale_huffbits, scale_huffcodes, stat0, stat1, stat2, stat3, stat4, VLC::table, VLC::table_allocated, WMADecodeContext::use_bit_reservoir, WMADecodeContext::use_exp_vlc, WMADecodeContext::use_noise_coding, WMADecodeContext::use_variable_block_len, WMADecodeContext::version, vlcbuf1, VLCBUF1SIZE, vlcbuf2, VLCBUF2SIZE, vlcbuf3, VLCBUF3SIZE, vlcbuf4, VLCBUF4SIZE, WMADecodeContext::windows, wma_critical_freqs, and wma_lsp_to_curve_init().

Referenced by OpenDecoder().

int wma_decode_superframe_frame	(	WMADecodeContext *	s,
		int32_t *	samples,
		uint8_t *	buf,
		int	buf_size
	)

References WMADecodeContext::bit_offset, WMADecodeContext::byte_offset_bits, WMADecodeContext::current_frame, WMADecodeContext::frame_len, WMADecodeContext::gb, get_bits(), get_bits_count(), init_get_bits(), WMADecodeContext::last_bitoffset, WMADecodeContext::last_superframe, WMADecodeContext::last_superframe_len, MAX_CODED_SUPERFRAME_SIZE, WMADecodeContext::nb_frames, WMADecodeContext::reset_block_lengths, skip_bits(), WMADecodeContext::use_bit_reservoir, and wma_decode_frame().

Referenced by DecodeFrame().

int wma_decode_superframe_init	(	WMADecodeContext *	s,
		uint8_t *	buf,
		int	buf_size
	)

References WMADecodeContext::bit_offset, WMADecodeContext::byte_offset_bits, WMADecodeContext::current_frame, WMADecodeContext::gb, get_bits(), init_get_bits(), WMADecodeContext::last_superframe_len, WMADecodeContext::nb_frames, and WMADecodeContext::use_bit_reservoir.

Referenced by DecodeFrame().