FFmpeg
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#include <math.h>
#include <stddef.h>
#include <stdio.h>
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/float_dsp.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/samplefmt.h"
#include "avcodec.h"
#include "fft.h"
#include "get_bits.h"
#include "dcadata.h"
#include "dcahuff.h"
#include "dca.h"
#include "mathops.h"
#include "synth_filter.h"
#include "dcadsp.h"
#include "fmtconvert.h"
#include "internal.h"
Go to the source code of this file.
Data Structures | |
struct | BitAlloc |
Bit allocation. More... | |
struct | DCAContext |
Macros | |
#define | DCA_PRIM_CHANNELS_MAX (7) |
#define | DCA_SUBBANDS (64) |
#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_CHSETS_MAX (4) |
#define | DCA_CHSET_CHANS_MAX (8) |
#define | DCA_CORE_EXTS (DCA_EXT_XCH | DCA_EXT_XXCH | DCA_EXT_X96) |
#define | DCA_DOLBY 101 /* FIXME */ |
#define | DCA_CHANNEL_BITS 6 |
#define | DCA_CHANNEL_MASK 0x3F |
#define | DCA_LFE 0x80 |
#define | HEADER_SIZE 14 |
#define | DCA_MAX_FRAME_SIZE 16384 |
#define | DCA_MAX_EXSS_HEADER_SIZE 4096 |
#define | DCA_BUFFER_PADDING_SIZE 1024 |
#define | MIX_REAR1(samples, s1, rs, coef) |
#define | MIX_REAR2(samples, s1, s2, rs, coef) |
#define | MIX_FRONT3(samples, coef) |
#define | DOWNMIX_TO_STEREO(op1, op2) |
Functions | |
static av_always_inline int | get_bitalloc (GetBitContext *gb, BitAlloc *ba, int idx) |
static av_cold void | dca_init_vlcs (void) |
static void | get_array (GetBitContext *gb, int *dst, int len, int bits) |
static int | dca_xxch2index (DCAContext *s, int xxch_ch) |
static int | dca_parse_audio_coding_header (DCAContext *s, int base_channel, int xxch) |
static int | dca_parse_frame_header (DCAContext *s) |
static int | get_scale (GetBitContext *gb, int level, int value, int log2range) |
static int | dca_subframe_header (DCAContext *s, int base_channel, int block_index) |
static void | qmf_32_subbands (DCAContext *s, int chans, float samples_in[32][8], float *samples_out, float scale) |
static void | lfe_interpolation_fir (DCAContext *s, int decimation_select, int num_deci_sample, float *samples_in, float *samples_out, float scale) |
static void | dca_downmix (float **samples, int srcfmt, int downmix_coef[DCA_PRIM_CHANNELS_MAX][2], const int8_t *channel_mapping) |
static int | decode_blockcode (int code, int levels, int32_t *values) |
static int | decode_blockcodes (int code1, int code2, int levels, int32_t *values) |
static void | int8x8_fmul_int32 (float *dst, const int8_t *src, int scale) |
static int | dca_subsubframe (DCAContext *s, int base_channel, int block_index) |
static int | dca_filter_channels (DCAContext *s, int block_index) |
static int | dca_subframe_footer (DCAContext *s, int base_channel) |
static int | dca_decode_block (DCAContext *s, int base_channel, int block_index) |
Decode a dca frame block. | |
static int | dca_exss_mask2count (int mask) |
Return the number of channels in an ExSS speaker mask (HD) | |
static void | dca_exss_skip_mix_coeffs (GetBitContext *gb, int channels, int out_ch) |
Skip mixing coefficients of a single mix out configuration (HD) | |
static int | dca_exss_parse_asset_header (DCAContext *s) |
Parse extension substream asset header (HD) | |
static int | dca_xbr_parse_frame (DCAContext *s) |
static int | dca_xxch_decode_frame (DCAContext *s) |
static void | dca_exss_parse_header (DCAContext *s) |
Parse extension substream header (HD) | |
static int | dca_decode_frame (AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt) |
Main frame decoding function FIXME add arguments. | |
static av_cold int | dca_decode_init (AVCodecContext *avctx) |
DCA initialization. | |
static av_cold int | dca_decode_end (AVCodecContext *avctx) |
Variables | |
static const uint32_t | map_xxch_to_native [28] |
static const int | dca_ext_audio_descr_mask [] |
static const uint64_t | dca_core_channel_layout [] |
static const int8_t | dca_lfe_index [] |
static const int8_t | dca_channel_reorder_lfe [][9] |
static const int8_t | dca_channel_reorder_lfe_xch [][9] |
static const int8_t | dca_channel_reorder_nolfe [][9] |
static const int8_t | dca_channel_reorder_nolfe_xch [][9] |
static BitAlloc | dca_bitalloc_index |
indexes for samples VLC select | |
static BitAlloc | dca_tmode |
transition mode VLCs | |
static BitAlloc | dca_scalefactor |
scalefactor VLCs | |
static BitAlloc | dca_smpl_bitalloc [11] |
samples VLCs | |
static const uint16_t | dca_vlc_offs [] |
static const uint8_t | abits_sizes [7] = { 7, 10, 12, 13, 15, 17, 19 } |
static const uint8_t | abits_levels [7] = { 3, 5, 7, 9, 13, 17, 25 } |
static const AVProfile | profiles [] |
AVCodec | ff_dca_decoder |
#define DCA_PRIM_CHANNELS_MAX (7) |
Definition at line 54 of file dcadec.c.
Referenced by dca_downmix(), and dca_parse_audio_coding_header().
#define DCA_SUBBANDS (64) |
Definition at line 55 of file dcadec.c.
Referenced by dca_filter_channels(), dca_parse_audio_coding_header(), dca_subsubframe(), and dca_xbr_parse_frame().
#define DCA_CHSETS_MAX (4) |
Definition at line 61 of file dcadec.c.
Referenced by dca_xbr_parse_frame().
#define DCA_CHSET_CHANS_MAX (8) |
Definition at line 62 of file dcadec.c.
Referenced by dca_xbr_parse_frame().
#define DCA_CORE_EXTS (DCA_EXT_XCH | DCA_EXT_XXCH | DCA_EXT_X96) |
Definition at line 186 of file dcadec.c.
Referenced by dca_exss_parse_asset_header().
#define DCA_CHANNEL_MASK 0x3F |
Definition at line 317 of file dcadec.c.
Referenced by dca_subframe_header().
#define DCA_LFE 0x80 |
Definition at line 319 of file dcadec.c.
Referenced by dca_filter_channels(), and dca_parse_frame_header().
#define DCA_MAX_FRAME_SIZE 16384 |
Definition at line 323 of file dcadec.c.
Referenced by dca_decode_frame().
#define DCA_MAX_EXSS_HEADER_SIZE 4096 |
Definition at line 324 of file dcadec.c.
Referenced by dca_decode_frame().
#define MIX_REAR1 | ( | samples, | |
s1, | |||
rs, | |||
coef | |||
) |
Definition at line 1176 of file dcadec.c.
Referenced by dca_downmix().
#define MIX_FRONT3 | ( | samples, | |
coef | |||
) |
#define DOWNMIX_TO_STEREO | ( | op1, | |
op2 | |||
) |
Definition at line 1191 of file dcadec.c.
Referenced by dca_downmix().
enum DCAMode |
enum DCAExSSSpeakerMask |
enum DCAXxchSpeakerMask |
enum DCAExtensionMask |
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Definition at line 341 of file dcadec.c.
Referenced by dca_subframe_header(), dca_subsubframe(), and get_scale().
Definition at line 480 of file dcadec.c.
Referenced by dca_decode_init().
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inlinestatic |
Definition at line 535 of file dcadec.c.
Referenced by dca_parse_audio_coding_header(), and dca_xbr_parse_frame().
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inlinestatic |
Definition at line 541 of file dcadec.c.
Referenced by dca_parse_audio_coding_header().
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Definition at line 553 of file dcadec.c.
Referenced by dca_decode_frame(), dca_parse_frame_header(), and dca_xxch_decode_frame().
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Definition at line 703 of file dcadec.c.
Referenced by dca_decode_frame().
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inlinestatic |
Definition at line 806 of file dcadec.c.
Referenced by dca_subframe_header().
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Definition at line 823 of file dcadec.c.
Referenced by dca_decode_block().
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Definition at line 1104 of file dcadec.c.
Referenced by dca_filter_channels().
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Definition at line 1143 of file dcadec.c.
Referenced by dca_filter_channels().
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Definition at line 1197 of file dcadec.c.
Referenced by dca_filter_channels().
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Definition at line 1260 of file dcadec.c.
Referenced by decode_blockcodes().
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Definition at line 1274 of file dcadec.c.
Referenced by dca_subsubframe(), and dca_xbr_parse_frame().
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inlinestatic |
Definition at line 1285 of file dcadec.c.
Referenced by dca_subsubframe().
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Definition at line 1294 of file dcadec.c.
Referenced by dca_decode_block().
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Definition at line 1438 of file dcadec.c.
Referenced by dca_decode_frame().
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Definition at line 1471 of file dcadec.c.
Referenced by dca_decode_block().
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Decode a dca frame block.
s | pointer to the DCAContext |
Definition at line 1503 of file dcadec.c.
Referenced by dca_decode_frame(), and dca_xxch_decode_frame().
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Return the number of channels in an ExSS speaker mask (HD)
Definition at line 1551 of file dcadec.c.
Referenced by dca_exss_parse_asset_header(), and dca_exss_parse_header().
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Skip mixing coefficients of a single mix out configuration (HD)
Definition at line 1569 of file dcadec.c.
Referenced by dca_exss_parse_asset_header().
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Parse extension substream asset header (HD)
Definition at line 1583 of file dcadec.c.
Referenced by dca_exss_parse_header().
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Definition at line 1731 of file dcadec.c.
Referenced by dca_exss_parse_header().
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Definition at line 1892 of file dcadec.c.
Referenced by dca_decode_frame(), and dca_exss_parse_header().
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Parse extension substream header (HD)
Definition at line 1948 of file dcadec.c.
Referenced by dca_decode_frame().
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DCA initialization.
avctx | pointer to the AVCodecContext |
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Definition at line 129 of file dcadec.c.
Referenced by dca_decode_frame().
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Definition at line 174 of file dcadec.c.
Referenced by dca_decode_frame().
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Definition at line 197 of file dcadec.c.
Referenced by dca_decode_frame().
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Definition at line 234 of file dcadec.c.
Referenced by dca_decode_frame().
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Definition at line 238 of file dcadec.c.
Referenced by dca_decode_frame().
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Definition at line 257 of file dcadec.c.
Referenced by dca_decode_frame().
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Definition at line 276 of file dcadec.c.
Referenced by dca_decode_frame().
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Definition at line 295 of file dcadec.c.
Referenced by dca_decode_frame().
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Definition at line 471 of file dcadec.c.
Referenced by dca_init_vlcs().
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Definition at line 1281 of file dcadec.c.
Referenced by dca_subsubframe(), and dca_xbr_parse_frame().
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Definition at line 1282 of file dcadec.c.
Referenced by dca_subsubframe(), and dca_xbr_parse_frame().
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AVCodec ff_dca_decoder |