From b339019de4e5f4d3c661bbdba98ae248ab77e2f0 Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Mon, 22 Sep 2014 07:36:08 +0200 Subject: dca: Split code for handling the EXSS extension off into a separate file --- libavcodec/dca.h | 149 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) (limited to 'libavcodec/dca.h') diff --git a/libavcodec/dca.h b/libavcodec/dca.h index 0037de2816..e2f57772bc 100644 --- a/libavcodec/dca.h +++ b/libavcodec/dca.h @@ -26,8 +26,15 @@ #define AVCODEC_DCA_H #include + +#include "libavutil/float_dsp.h" #include "libavutil/internal.h" +#include "avcodec.h" +#include "dcadsp.h" +#include "fmtconvert.h" +#include "get_bits.h" + /** DCA syncwords, also used for bitstream type detection */ #define DCA_MARKER_RAW_BE 0x7FFE8001 #define DCA_MARKER_RAW_LE 0xFE7F0180 @@ -37,6 +44,148 @@ /** DCA-HD specific block starts with this marker. */ #define DCA_HD_MARKER 0x64582025 +#define DCA_PRIM_CHANNELS_MAX (7) +#define DCA_ABITS_MAX (32) /* Should be 28 */ +#define DCA_SUBSUBFRAMES_MAX (4) +#define DCA_SUBFRAMES_MAX (16) +#define DCA_BLOCKS_MAX (16) +#define DCA_LFE_MAX (3) + +#define DCA_MAX_FRAME_SIZE 16384 +#define DCA_MAX_EXSS_HEADER_SIZE 4096 + +#define DCA_BUFFER_PADDING_SIZE 1024 + +enum DCAExtensionMask { + DCA_EXT_CORE = 0x001, ///< core in core substream + DCA_EXT_XXCH = 0x002, ///< XXCh channels extension in core substream + DCA_EXT_X96 = 0x004, ///< 96/24 extension in core substream + DCA_EXT_XCH = 0x008, ///< XCh channel extension in core substream + DCA_EXT_EXSS_CORE = 0x010, ///< core in ExSS (extension substream) + DCA_EXT_EXSS_XBR = 0x020, ///< extended bitrate extension in ExSS + DCA_EXT_EXSS_XXCH = 0x040, ///< XXCh channels extension in ExSS + DCA_EXT_EXSS_X96 = 0x080, ///< 96/24 extension in ExSS + DCA_EXT_EXSS_LBR = 0x100, ///< low bitrate component in ExSS + DCA_EXT_EXSS_XLL = 0x200, ///< lossless extension in ExSS +}; + +typedef struct DCAContext { + AVClass *class; ///< class for AVOptions + AVCodecContext *avctx; + /* Frame header */ + int frame_type; ///< type of the current frame + int samples_deficit; ///< deficit sample count + int crc_present; ///< crc is present in the bitstream + int sample_blocks; ///< number of PCM sample blocks + int frame_size; ///< primary frame byte size + int amode; ///< audio channels arrangement + int sample_rate; ///< audio sampling rate + int bit_rate; ///< transmission bit rate + int bit_rate_index; ///< transmission bit rate index + + int dynrange; ///< embedded dynamic range flag + int timestamp; ///< embedded time stamp flag + int aux_data; ///< auxiliary data flag + int hdcd; ///< source material is mastered in HDCD + int ext_descr; ///< extension audio descriptor flag + int ext_coding; ///< extended coding flag + int aspf; ///< audio sync word insertion flag + int lfe; ///< low frequency effects flag + int predictor_history; ///< predictor history flag + int header_crc; ///< header crc check bytes + int multirate_inter; ///< multirate interpolator switch + int version; ///< encoder software revision + int copy_history; ///< copy history + int source_pcm_res; ///< source pcm resolution + int front_sum; ///< front sum/difference flag + int surround_sum; ///< surround sum/difference flag + 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 + + /* 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 + + /* Core substream's embedded downmix coefficients (cf. ETSI TS 102 114 V1.4.1) + * Input: primary audio channels (incl. LFE if present) + * Output: downmix audio channels (up to 4, no LFE) */ + uint8_t core_downmix; ///< embedded downmix coefficients available + 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]; + DECLARE_ALIGNED(32, float, subband_fir_hist)[DCA_PRIM_CHANNELS_MAX][512]; + DECLARE_ALIGNED(32, float, subband_fir_noidea)[DCA_PRIM_CHANNELS_MAX][32]; + int hist_index[DCA_PRIM_CHANNELS_MAX]; + DECLARE_ALIGNED(32, float, raXin)[32]; + + 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; + unsigned int extra_channels_buffer_size; + + uint8_t dca_buffer[DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE + DCA_BUFFER_PADDING_SIZE]; + int dca_buffer_size; ///< how much data is in the dca_buffer + + const int8_t *channel_order_tab; ///< channel reordering table, lfe and non lfe + GetBitContext gb; + /* Current position in DCA frame */ + int current_subframe; + int current_subsubframe; + + int core_ext_mask; ///< present extensions in the core substream + + /* XCh extension information */ + int xch_present; ///< XCh extension present and valid + int xch_base_channel; ///< index of first (only) channel containing XCH data + int xch_disable; ///< whether the XCh extension should be decoded or not + + /* ExSS header parser */ + int static_fields; ///< static fields present + int mix_metadata; ///< mixing metadata present + int num_mix_configs; ///< number of mix out configurations + int mix_config_num_ch[4]; ///< number of channels in each mix out configuration + + int profile; + + int debug_flag; ///< used for suppressing repeated error messages output + AVFloatDSPContext fdsp; + FFTContext imdct; + SynthFilterContext synth; + DCADSPContext dcadsp; + FmtConvertContext fmt_conv; +} DCAContext; + extern av_export const uint32_t avpriv_dca_sample_rates[16]; /** -- cgit v1.2.3