diff options
Diffstat (limited to 'libavcodec/dca.h')
| -rw-r--r-- | libavcodec/dca.h | 70 |
1 files changed, 44 insertions, 26 deletions
diff --git a/libavcodec/dca.h b/libavcodec/dca.h index 887eb375f2..6548d75634 100644 --- a/libavcodec/dca.h +++ b/libavcodec/dca.h @@ -130,6 +130,47 @@ typedef struct QMF64_table { float rsin[32]; } QMF64_table; +/* Primary audio coding header */ +typedef struct DCAAudioHeader { + int subband_activity[DCA_PRIM_CHANNELS_MAX]; ///< subband activity count + int vq_start_subband[DCA_PRIM_CHANNELS_MAX]; ///< high frequency vq start subband + int joint_intensity[DCA_PRIM_CHANNELS_MAX]; ///< joint intensity coding index + int transient_huffman[DCA_PRIM_CHANNELS_MAX]; ///< transient mode code book + int scalefactor_huffman[DCA_PRIM_CHANNELS_MAX]; ///< scale factor code book + int bitalloc_huffman[DCA_PRIM_CHANNELS_MAX]; ///< bit allocation quantizer select + int quant_index_huffman[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]; ///< quantization index codebook select + float scalefactor_adj[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]; ///< scale factor adjustment + + int subframes; ///< number of subframes + int total_channels; ///< number of channels including extensions + int prim_channels; ///< number of primary audio channels +} DCAAudioHeader; + +typedef struct DCAChan { + DECLARE_ALIGNED(32, float, subband_samples)[DCA_BLOCKS_MAX][DCA_SUBBANDS][8]; + + /* Subband samples history (for ADPCM) */ + DECLARE_ALIGNED(16, float, subband_samples_hist)[DCA_SUBBANDS][4]; + int hist_index; + + /* Half size is sufficient for core decoding, but for 96 kHz data + * we need QMF with 64 subbands and 1024 samples. */ + DECLARE_ALIGNED(32, float, subband_fir_hist)[1024]; + DECLARE_ALIGNED(32, float, subband_fir_noidea)[64]; + + /* Primary audio coding side information */ + int prediction_mode[DCA_SUBBANDS]; ///< prediction mode (ADPCM used or not) + int prediction_vq[DCA_SUBBANDS]; ///< prediction VQ coefs + int bitalloc[DCA_SUBBANDS]; ///< bit allocation index + int transition_mode[DCA_SUBBANDS]; ///< transition mode (transients) + int32_t scale_factor[DCA_SUBBANDS][2];///< scale factors (2 if transient) + int joint_huff; ///< joint subband scale factors codebook + int joint_scale_factor[DCA_SUBBANDS]; ///< joint subband scale factors + + int32_t high_freq_vq[DCA_SUBBANDS]; ///< VQ encoded high frequency subbands +} DCAChan; + + typedef struct DCAContext { AVClass *class; ///< class for AVOptions AVCodecContext *avctx; @@ -163,28 +204,11 @@ typedef struct DCAContext { int dialog_norm; ///< dialog normalisation parameter /* Primary audio coding header */ - int subframes; ///< number of subframes - int total_channels; ///< number of channels including extensions - int prim_channels; ///< number of primary audio channels - int subband_activity[DCA_PRIM_CHANNELS_MAX]; ///< subband activity count - int vq_start_subband[DCA_PRIM_CHANNELS_MAX]; ///< high frequency vq start subband - int joint_intensity[DCA_PRIM_CHANNELS_MAX]; ///< joint intensity coding index - int transient_huffman[DCA_PRIM_CHANNELS_MAX]; ///< transient mode code book - int scalefactor_huffman[DCA_PRIM_CHANNELS_MAX]; ///< scale factor code book - int bitalloc_huffman[DCA_PRIM_CHANNELS_MAX]; ///< bit allocation quantizer select - int quant_index_huffman[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]; ///< quantization index codebook select - float scalefactor_adj[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]; ///< scale factor adjustment + DCAAudioHeader audio_header; /* Primary audio coding side information */ int subsubframes[DCA_SUBFRAMES_MAX]; ///< number of subsubframes int partial_samples[DCA_SUBFRAMES_MAX]; ///< partial subsubframe samples count - int prediction_mode[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< prediction mode (ADPCM used or not) - int prediction_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< prediction VQ coefs - int bitalloc[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< bit allocation index - int transition_mode[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< transition mode (transients) - int32_t scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][2];///< scale factors (2 if transient) - int joint_huff[DCA_PRIM_CHANNELS_MAX]; ///< joint subband scale factors codebook - int joint_scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< joint subband scale factors float downmix_coef[DCA_PRIM_CHANNELS_MAX + 1][2]; ///< stereo downmix coefficients int dynrange_coef; ///< dynamic range coefficient @@ -195,23 +219,17 @@ typedef struct DCAContext { uint8_t core_downmix_amode; ///< audio channel arrangement of embedded downmix uint16_t core_downmix_codes[DCA_PRIM_CHANNELS_MAX + 1][4]; ///< embedded downmix coefficients (9-bit codes) - int32_t high_freq_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< VQ encoded high frequency subbands float lfe_data[2 * DCA_LFE_MAX * (DCA_BLOCKS_MAX + 4)]; ///< Low frequency effect data int lfe_scale_factor; /* Subband samples history (for ADPCM) */ - DECLARE_ALIGNED(16, float, subband_samples_hist)[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][4]; - /* Half size is sufficient for core decoding, but for 96 kHz data - * we need QMF with 64 subbands and 1024 samples. */ - DECLARE_ALIGNED(32, float, subband_fir_hist)[DCA_PRIM_CHANNELS_MAX][1024]; - DECLARE_ALIGNED(32, float, subband_fir_noidea)[DCA_PRIM_CHANNELS_MAX][64]; - int hist_index[DCA_PRIM_CHANNELS_MAX]; DECLARE_ALIGNED(32, float, raXin)[32]; + DCAChan dca_chan[DCA_PRIM_CHANNELS_MAX]; + int output; ///< type of output - DECLARE_ALIGNED(32, float, subband_samples)[DCA_BLOCKS_MAX][DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][8]; float *samples_chanptr[DCA_PRIM_CHANNELS_MAX + 1]; float *extra_channels[DCA_PRIM_CHANNELS_MAX + 1]; uint8_t *extra_channels_buffer; |