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copy default coupling band structure from table to decoding context (used for E-AC-3)

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Originally committed as revision 14990 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Justin Ruggles 2008-08-27 01:40:46 +00:00
parent e43b29ab26
commit 0ffea2439b
2 changed files with 4 additions and 1 deletions
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3
libavcodec/ac3dec.c
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@ -824,6 +824,9 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
s->cpl_band_struct[bnd] = get_bits1(gbc); s->cpl_band_struct[bnd] = get_bits1(gbc);
} }
} else if (!blk) { } else if (!blk) {
memcpy(s->cpl_band_struct,
&ff_eac3_default_cpl_band_struct[cpl_begin_freq+1],
s->num_cpl_subbands-1);
} }
s->cpl_band_struct[s->num_cpl_subbands-1] = 0; s->cpl_band_struct[s->num_cpl_subbands-1] = 0;

2
libavcodec/ac3dec.h
View File

@ -82,7 +82,7 @@ typedef struct {
int phase_flags[18]; ///< phase flags (phsflg) int phase_flags[18]; ///< phase flags (phsflg)
int num_cpl_subbands; ///< number of coupling sub bands (ncplsubnd) int num_cpl_subbands; ///< number of coupling sub bands (ncplsubnd)
int num_cpl_bands; ///< number of coupling bands (ncplbnd) int num_cpl_bands; ///< number of coupling bands (ncplbnd)
int cpl_band_struct[18]; ///< coupling band structure (cplbndstrc) uint8_t cpl_band_struct[18]; ///< coupling band structure (cplbndstrc)
int firstchincpl; ///< first channel in coupling int firstchincpl; ///< first channel in coupling
int first_cpl_coords[AC3_MAX_CHANNELS]; ///< first coupling coordinates states (firstcplcos) int first_cpl_coords[AC3_MAX_CHANNELS]; ///< first coupling coordinates states (firstcplcos)
int cpl_coords[AC3_MAX_CHANNELS][18]; ///< coupling coordinates (cplco) int cpl_coords[AC3_MAX_CHANNELS][18]; ///< coupling coordinates (cplco)