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authorNiels Möller <nisse@lysator.liu.se>2014-02-11 11:45:27 +0100
committerDiego Biurrun <diego@biurrun.de>2015-03-15 14:51:36 +0100
commit217e4ff4d1f845b76e44634e29371cd09313d1c2 (patch)
treeb2ed55ea486e80a884e463c375204c9b07a73c00
parent4da5aacc7eba274a4f18411120de539d39c5151e (diff)
downloadffmpeg-streaming-217e4ff4d1f845b76e44634e29371cd09313d1c2.zip
ffmpeg-streaming-217e4ff4d1f845b76e44634e29371cd09313d1c2.tar.gz
dca: Support for XLL (lossless extension)
Cleanup and integration by Diego Biurrun. Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat
-rw-r--r--Changelog1
-rw-r--r--doc/general.texi1
-rw-r--r--libavcodec/Makefile2
-rw-r--r--libavcodec/dca.h101
-rw-r--r--libavcodec/dca_exss.c57
-rw-r--r--libavcodec/dca_xll.c747
-rw-r--r--libavcodec/dcadata.c630
-rw-r--r--libavcodec/dcadata.h10
-rw-r--r--libavcodec/dcadec.c199
-rw-r--r--libavcodec/version.h2
10 files changed, 1718 insertions, 32 deletions
diff --git a/Changelog b/Changelog
index 7dc4d7c..b9fd45b 100644
--- a/Changelog
+++ b/Changelog
@@ -23,6 +23,7 @@ version <next>:
- RTP depacketization of T.140 text (RFC 4103)
- VP9 RTP payload format (draft 0) experimental depacketizer
- TDSC decoder
+- DTS lossless extension (XLL) decoding (not lossless, disabled by default)
version 11:
diff --git a/doc/general.texi b/doc/general.texi
index 58ce1dc..3ea8e60 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -828,6 +828,7 @@ following image formats are supported:
@item COOK @tab @tab X
@tab All versions except 5.1 are supported.
@item DCA (DTS Coherent Acoustics) @tab @tab X
+ @tab supported extensions: XCh, XLL (partially)
@item DPCM id RoQ @tab X @tab X
@tab Used in Quake III, Jedi Knight 2, other computer games.
@item DPCM Interplay @tab @tab X
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index b132021..71ebdb8 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -161,7 +161,7 @@ OBJS-$(CONFIG_CSCD_DECODER) += cscd.o
OBJS-$(CONFIG_CYUV_DECODER) += cyuv.o
OBJS-$(CONFIG_DCA_DECODER) += dcadec.o dca.o dcadsp.o \
dcadata.o dca_exss.o \
- synth_filter.o
+ dca_xll.o synth_filter.o
OBJS-$(CONFIG_DFA_DECODER) += dfa.o
OBJS-$(CONFIG_DNXHD_DECODER) += dnxhddec.o dnxhddata.o
OBJS-$(CONFIG_DNXHD_ENCODER) += dnxhdenc.o dnxhddata.o
diff --git a/libavcodec/dca.h b/libavcodec/dca.h
index 54643c9..887eb37 100644
--- a/libavcodec/dca.h
+++ b/libavcodec/dca.h
@@ -42,6 +42,21 @@
#define DCA_BLOCKS_MAX (16)
#define DCA_LFE_MAX (3)
+#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_XLL_FBANDS_MAX (4)
+#define DCA_XLL_SEGMENTS_MAX (16)
+#define DCA_XLL_CHSETS_MAX (16)
+#define DCA_XLL_CHANNELS_MAX (16)
+#define DCA_XLL_AORDER_MAX (15)
+
+/* Arbitrary limit; not sure what the maximum really is, but much larger. */
+#define DCA_XLL_DMIX_NCOEFFS_MAX (18)
+
#define DCA_MAX_FRAME_SIZE 16384
#define DCA_MAX_EXSS_HEADER_SIZE 4096
@@ -60,6 +75,61 @@ enum DCAExtensionMask {
DCA_EXT_EXSS_XLL = 0x200, ///< lossless extension in ExSS
};
+typedef struct XllChSetSubHeader {
+ int channels; ///< number of channels in channel set, at most 16
+ int residual_encode; ///< residual channel encoding
+ int bit_resolution; ///< input sample bit-width
+ int bit_width; ///< original input sample bit-width
+ int sampling_frequency; ///< sampling frequency
+ int samp_freq_interp; ///< sampling frequency interpolation multiplier
+ int replacement_set; ///< replacement channel set group
+ int active_replace_set; ///< current channel set is active channel set
+ int primary_ch_set;
+ int downmix_coeff_code_embedded;
+ int downmix_embedded;
+ int downmix_type;
+ int hier_chset; ///< hierarchical channel set
+ int downmix_ncoeffs;
+ int downmix_coeffs[DCA_XLL_DMIX_NCOEFFS_MAX];
+ int ch_mask_enabled;
+ int ch_mask;
+ int mapping_coeffs_present;
+ int num_freq_bands;
+
+ /* m_nOrigChanOrder */
+ uint8_t orig_chan_order[DCA_XLL_FBANDS_MAX][DCA_XLL_CHANNELS_MAX];
+ uint8_t orig_chan_order_inv[DCA_XLL_FBANDS_MAX][DCA_XLL_CHANNELS_MAX];
+ /* Coefficients for channel pairs (at most 8), m_anPWChPairsCoeffs */
+ int8_t pw_ch_pairs_coeffs[DCA_XLL_FBANDS_MAX][DCA_XLL_CHANNELS_MAX/2];
+ /* m_nCurrHighestLPCOrder */
+ uint8_t adapt_order_max[DCA_XLL_FBANDS_MAX];
+ /* m_pnAdaptPredOrder */
+ uint8_t adapt_order[DCA_XLL_FBANDS_MAX][DCA_XLL_CHANNELS_MAX];
+ /* m_pnFixedPredOrder */
+ uint8_t fixed_order[DCA_XLL_FBANDS_MAX][DCA_XLL_CHANNELS_MAX];
+ /* m_pnLPCReflCoeffsQInd, unsigned version */
+ uint8_t lpc_refl_coeffs_q_ind[DCA_XLL_FBANDS_MAX]
+ [DCA_XLL_CHANNELS_MAX][DCA_XLL_AORDER_MAX];
+
+ int lsb_fsize[DCA_XLL_FBANDS_MAX];
+ int8_t scalable_lsbs[DCA_XLL_FBANDS_MAX][DCA_XLL_CHANNELS_MAX];
+ int8_t bit_width_adj_per_ch[DCA_XLL_FBANDS_MAX][DCA_XLL_CHANNELS_MAX];
+} XllChSetSubHeader;
+
+typedef struct XllNavi {
+ GetBitContext gb; // Context for parsing the data segments
+ unsigned band_size[DCA_XLL_FBANDS_MAX];
+ unsigned segment_size[DCA_XLL_FBANDS_MAX][DCA_XLL_SEGMENTS_MAX];
+ unsigned chset_size[DCA_XLL_FBANDS_MAX][DCA_XLL_SEGMENTS_MAX][DCA_XLL_CHSETS_MAX];
+} XllNavi;
+
+typedef struct QMF64_table {
+ float dct4_coeff[32][32];
+ float dct2_coeff[32][32];
+ float rcos[32];
+ float rsin[32];
+} QMF64_table;
+
typedef struct DCAContext {
AVClass *class; ///< class for AVOptions
AVCodecContext *avctx;
@@ -132,8 +202,10 @@ typedef struct DCAContext {
/* 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];
+ /* 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];
@@ -155,12 +227,31 @@ typedef struct DCAContext {
int current_subsubframe;
int core_ext_mask; ///< present extensions in the core substream
+ int exss_ext_mask; ///< Non-core extensions
/* 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
+ /* XLL extension information */
+ int xll_disable;
+ int xll_nch_sets; ///< number of channel sets per frame
+ int xll_channels; ///< total number of channels (in all channel sets)
+ int xll_residual_channels; ///< number of residual channels
+ int xll_segments; ///< number of segments per frame
+ int xll_log_smpl_in_seg; ///< supposedly this is "nBits4SamplLoci"
+ int xll_smpl_in_seg; ///< samples in segment per one frequency band for the first channel set
+ int xll_bits4seg_size; ///< number of bits used to read segment size
+ int xll_banddata_crc; ///< presence of CRC16 within each frequency band
+ int xll_scalable_lsb;
+ int xll_bits4ch_mask; ///< channel position mask
+ int xll_fixed_lsb_width;
+ XllChSetSubHeader xll_chsets[DCA_XLL_CHSETS_MAX];
+ XllNavi xll_navi;
+ int *xll_sample_buf;
+ unsigned int xll_sample_buf_size;
+
/* ExSS header parser */
int static_fields; ///< static fields present
int mix_metadata; ///< mixing metadata present
@@ -168,12 +259,14 @@ typedef struct DCAContext {
int mix_config_num_ch[4]; ///< number of channels in each mix out configuration
int profile;
+ int one2one_map_chtospkr;
int debug_flag; ///< used for suppressing repeated error messages output
AVFloatDSPContext fdsp;
FFTContext imdct;
SynthFilterContext synth;
DCADSPContext dcadsp;
+ QMF64_table *qmf64_table;
FmtConvertContext fmt_conv;
} DCAContext;
@@ -187,4 +280,8 @@ int ff_dca_convert_bitstream(const uint8_t *src, int src_size, uint8_t *dst,
void ff_dca_exss_parse_header(DCAContext *s);
+int ff_dca_xll_decode_header(DCAContext *s);
+int ff_dca_xll_decode_navi(DCAContext *s, int asset_end);
+int ff_dca_xll_decode_audio(DCAContext *s, AVFrame *frame);
+
#endif /* AVCODEC_DCA_H */
diff --git a/libavcodec/dca_exss.c b/libavcodec/dca_exss.c
index 0f022e4..2895e20 100644
--- a/libavcodec/dca_exss.c
+++ b/libavcodec/dca_exss.c
@@ -22,6 +22,7 @@
#include "libavutil/log.h"
#include "dca.h"
+#include "dca_syncwords.h"
#include "get_bits.h"
/* extensions that reside in core substream */
@@ -121,7 +122,8 @@ static int dca_exss_parse_asset_header(DCAContext *s)
skip_bits(&s->gb, 4); // max sample rate code
channels = get_bits(&s->gb, 8) + 1;
- if (get_bits1(&s->gb)) { // 1-to-1 channels to speakers
+ s->one2one_map_chtospkr = get_bits1(&s->gb);
+ if (s->one2one_map_chtospkr) {
int spkr_remap_sets;
int spkr_mask_size = 16;
int num_spkrs[7];
@@ -242,21 +244,27 @@ static int dca_exss_parse_asset_header(DCAContext *s)
*/
void ff_dca_exss_parse_header(DCAContext *s)
{
+ int asset_size[8];
int ss_index;
int blownup;
int num_audiop = 1;
int num_assets = 1;
int active_ss_mask[8];
int i, j;
+ int start_pos;
+ int hdrsize;
+ uint32_t mkr;
if (get_bits_left(&s->gb) < 52)
return;
+ start_pos = get_bits_count(&s->gb) - 32;
+
skip_bits(&s->gb, 8); // user data
ss_index = get_bits(&s->gb, 2);
blownup = get_bits1(&s->gb);
- skip_bits(&s->gb, 8 + 4 * blownup); // header_size
+ hdrsize = get_bits(&s->gb, 8 + 4 * blownup) + 1; // header_size
skip_bits(&s->gb, 16 + 4 * blownup); // hd_size
s->static_fields = get_bits1(&s->gb);
@@ -309,13 +317,52 @@ void ff_dca_exss_parse_header(DCAContext *s)
}
for (i = 0; i < num_assets; i++)
- skip_bits_long(&s->gb, 16 + 4 * blownup); // asset size
+ asset_size[i] = get_bits_long(&s->gb, 16 + 4 * blownup) + 1;
for (i = 0; i < num_assets; i++) {
if (dca_exss_parse_asset_header(s))
return;
}
- /* not parsed further, we were only interested in the extensions mask
- * from the asset header */
+ if (num_assets > 0) {
+ j = get_bits_count(&s->gb);
+ if (start_pos + hdrsize * 8 > j)
+ skip_bits_long(&s->gb, start_pos + hdrsize * 8 - j);
+
+ for (i = 0; i < num_assets; i++) {
+ int end_pos;
+ start_pos = get_bits_count(&s->gb);
+ end_pos = start_pos + asset_size[i] * 8;
+ mkr = get_bits_long(&s->gb, 32);
+
+ /* parse extensions that we know about */
+ switch (mkr) {
+ case DCA_SYNCWORD_XLL:
+ if (s->xll_disable) {
+ av_log(s->avctx, AV_LOG_DEBUG,
+ "DTS-XLL: ignoring XLL extension\n");
+ break;
+ }
+ av_log(s->avctx, AV_LOG_DEBUG,
+ "DTS-XLL: decoding XLL extension\n");
+ if (ff_dca_xll_decode_header(s) == 0 &&
+ ff_dca_xll_decode_navi(s, end_pos) == 0)
+ s->exss_ext_mask |= DCA_EXT_EXSS_XLL;
+ break;
+ case DCA_SYNCWORD_XBR:
+ case DCA_SYNCWORD_XXCH:
+ default:
+ av_log(s->avctx, AV_LOG_VERBOSE,
+ "DTS-ExSS: unknown marker = 0x%08"PRIx32"\n", mkr);
+ }
+
+ /* skip to end of block */
+ j = get_bits_count(&s->gb);
+ if (j > end_pos)
+ av_log(s->avctx, AV_LOG_ERROR,
+ "DTS-ExSS: Processed asset too long.\n");
+ if (j < end_pos)
+ skip_bits_long(&s->gb, end_pos - j);
+ }
+ }
}
diff --git a/libavcodec/dca_xll.c b/libavcodec/dca_xll.c
new file mode 100644
index 0000000..0c32d6e
--- /dev/null
+++ b/libavcodec/dca_xll.c
@@ -0,0 +1,747 @@
+/*
+ * DCA XLL extension
+ *
+ * Copyright (C) 2012 Paul B Mahol
+ * Copyright (C) 2014 Niels Möller
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/common.h"
+#include "libavutil/internal.h"
+
+#include "avcodec.h"
+#include "dca.h"
+#include "dcadata.h"
+#include "get_bits.h"
+#include "unary.h"
+
+/* Sign as bit 0 */
+static inline int get_bits_sm(GetBitContext *s, unsigned n)
+{
+ int x = get_bits(s, n);
+ if (x & 1)
+ return -(x >> 1) - 1;
+ else
+ return x >> 1;
+}
+
+/* Return -1 on error. */
+static int32_t get_dmix_coeff(DCAContext *s, int inverse)
+{
+ unsigned code = get_bits(&s->gb, 9);
+ int32_t sign = (int32_t) (code >> 8) - 1;
+ unsigned idx = code & 0xff;
+ int inv_offset = FF_DCA_DMIXTABLE_SIZE -FF_DCA_INV_DMIXTABLE_SIZE;
+ if (idx >= FF_DCA_DMIXTABLE_SIZE) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "XLL: Invalid channel set downmix code %x\n", code);
+ return -1;
+ } else if (!inverse) {
+ return (ff_dca_dmixtable[idx] ^ sign) - sign;
+ } else if (idx < inv_offset) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "XLL: Invalid channel set inverse downmix code %x\n", code);
+ return -1;
+ } else {
+ return (ff_dca_inv_dmixtable[idx - inv_offset] ^ sign) - sign;
+ }
+}
+
+static int32_t dca_get_dmix_coeff(DCAContext *s)
+{
+ return get_dmix_coeff(s, 0);
+}
+
+static int32_t dca_get_inv_dmix_coeff(DCAContext *s)
+{
+ return get_dmix_coeff(s, 1);
+}
+
+/* parse XLL header */
+int ff_dca_xll_decode_header(DCAContext *s)
+{
+ int hdr_pos, hdr_size;
+ av_unused int version, frame_size;
+ int i, chset_index;
+
+ /* get bit position of sync header */
+ hdr_pos = get_bits_count(&s->gb) - 32;
+
+ version = get_bits(&s->gb, 4) + 1;
+ hdr_size = get_bits(&s->gb, 8) + 1;
+
+ frame_size = get_bits_long(&s->gb, get_bits(&s->gb, 5) + 1) + 1;
+
+ s->xll_channels =
+ s->xll_residual_channels = 0;
+ s->xll_nch_sets = get_bits(&s->gb, 4) + 1;
+ s->xll_segments = 1 << get_bits(&s->gb, 4);
+ s->xll_log_smpl_in_seg = get_bits(&s->gb, 4);
+ s->xll_smpl_in_seg = 1 << s->xll_log_smpl_in_seg;
+ s->xll_bits4seg_size = get_bits(&s->gb, 5) + 1;
+ s->xll_banddata_crc = get_bits(&s->gb, 2);
+ s->xll_scalable_lsb = get_bits1(&s->gb);
+ s->xll_bits4ch_mask = get_bits(&s->gb, 5) + 1;
+
+ if (s->xll_scalable_lsb) {
+ s->xll_fixed_lsb_width = get_bits(&s->gb, 4);
+ if (s->xll_fixed_lsb_width)
+ av_log(s->avctx, AV_LOG_WARNING,
+ "XLL: fixed lsb width = %d, non-zero not supported.\n",
+ s->xll_fixed_lsb_width);
+ }
+ /* skip to the end of the common header */
+ i = get_bits_count(&s->gb);
+ if (hdr_pos + hdr_size * 8 > i)
+ skip_bits_long(&s->gb, hdr_pos + hdr_size * 8 - i);
+
+ for (chset_index = 0; chset_index < s->xll_nch_sets; chset_index++) {
+ XllChSetSubHeader *chset = &s->xll_chsets[chset_index];
+ hdr_pos = get_bits_count(&s->gb);
+ hdr_size = get_bits(&s->gb, 10) + 1;
+
+ chset->channels = get_bits(&s->gb, 4) + 1;
+ chset->residual_encode = get_bits(&s->gb, chset->channels);
+ chset->bit_resolution = get_bits(&s->gb, 5) + 1;
+ chset->bit_width = get_bits(&s->gb, 5) + 1;
+ chset->sampling_frequency = ff_dca_sampling_freqs[get_bits(&s->gb, 4)];
+ chset->samp_freq_interp = get_bits(&s->gb, 2);
+ chset->replacement_set = get_bits(&s->gb, 2);
+ if (chset->replacement_set)
+ chset->active_replace_set = get_bits(&s->gb, 1);
+
+ if (s->one2one_map_chtospkr) {
+ chset->primary_ch_set = get_bits(&s->gb, 1);
+ chset->downmix_coeff_code_embedded = get_bits(&s->gb, 1);
+ if (chset->downmix_coeff_code_embedded) {
+ chset->downmix_embedded = get_bits(&s->gb, 1);
+ if (chset->primary_ch_set) {
+ chset->downmix_type = get_bits(&s->gb, 3);
+ if (chset->downmix_type > 6) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "XLL: Invalid channel set downmix type\n");
+ return AVERROR_INVALIDDATA;
+ }
+ }
+ }
+ chset->hier_chset = get_bits(&s->gb, 1);
+
+ if (chset->downmix_coeff_code_embedded) {
+ /* nDownmixCoeffs is specified as N * M. For a primary
+ * channel set, it appears that N = number of
+ * channels, and M is the number of downmix channels.
+ *
+ * For a non-primary channel set, N is specified as
+ * number of channels + 1, and M is derived from the
+ * channel set hierarchy, and at least in simple cases
+ * M is the number of channels in preceding channel
+ * sets. */
+ if (chset->primary_ch_set) {
+ static const char dmix_table[7] = { 1, 2, 2, 3, 3, 4, 4 };
+ chset->downmix_ncoeffs = chset->channels * dmix_table[chset->downmix_type];
+ } else
+ chset->downmix_ncoeffs = (chset->channels + 1) * s->xll_channels;
+
+ if (chset->downmix_ncoeffs > DCA_XLL_DMIX_NCOEFFS_MAX) {
+ avpriv_request_sample(s->avctx,
+ "XLL: More than %d downmix coefficients",
+ DCA_XLL_DMIX_NCOEFFS_MAX);
+ return AVERROR_PATCHWELCOME;
+ } else if (chset->primary_ch_set) {
+ for (i = 0; i < chset->downmix_ncoeffs; i++)
+ if ((chset->downmix_coeffs[i] = dca_get_dmix_coeff(s)) == -1)
+ return AVERROR_INVALIDDATA;
+ } else {
+ unsigned c, r;
+ for (c = 0, i = 0; c < s->xll_channels; c++, i += chset->channels + 1) {
+ if ((chset->downmix_coeffs[i] = dca_get_inv_dmix_coeff(s)) == -1)
+ return AVERROR_INVALIDDATA;
+ for (r = 1; r <= chset->channels; r++) {
+ int32_t coeff = dca_get_dmix_coeff(s);
+ if (coeff == -1)
+ return AVERROR_INVALIDDATA;
+ chset->downmix_coeffs[i + r] =
+ (chset->downmix_coeffs[i] * (int64_t) coeff + (1 << 15)) >> 16;
+ }
+ }
+ }
+ }
+ chset->ch_mask_enabled = get_bits(&s->gb, 1);
+ if (chset->ch_mask_enabled)
+ chset->ch_mask = get_bits(&s->gb, s->xll_bits4ch_mask);
+ else
+ /* Skip speaker configuration bits */
+ skip_bits_long(&s->gb, 25 * chset->channels);
+ } else {
+ chset->primary_ch_set = 1;
+ chset->downmix_coeff_code_embedded = 0;
+ /* Spec: NumChHierChSet = 0, NumDwnMixCodeCoeffs = 0, whatever that means. */
+ chset->mapping_coeffs_present = get_bits(&s->gb, 1);
+ if (chset->mapping_coeffs_present) {
+ avpriv_report_missing_feature(s->avctx, "XLL: mapping coefficients");
+ return AVERROR_PATCHWELCOME;
+ }
+ }
+ if (chset->sampling_frequency > 96000)
+ chset->num_freq_bands = 2 * (1 + get_bits(&s->gb, 1));
+ else
+ chset->num_freq_bands = 1;
+
+ if (chset->num_freq_bands > 1) {
+ avpriv_report_missing_feature(s->avctx, "XLL: num_freq_bands > 1");
+ return AVERROR_PATCHWELCOME;
+ }
+
+ if (get_bits(&s->gb, 1)) { /* pw_ch_decor_enabled */
+ int bits = av_ceil_log2(chset->channels);
+ for (i = 0; i < chset->channels; i++) {
+ unsigned j = get_bits(&s->gb, bits);
+ if (j >= chset->channels) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "Original channel order value %u too large, only %d channels.\n",
+ j, chset->channels);
+ return AVERROR_INVALIDDATA;
+ }
+ chset->orig_chan_order[0][i] = j;
+ chset->orig_chan_order_inv[0][j] = i;
+ }
+ for (i = 0; i < chset->channels / 2; i++) {
+ if (get_bits(&s->gb, 1)) /* bChPFlag */
+ chset->pw_ch_pairs_coeffs[0][i] = get_bits_sm(&s->gb, 7);
+ else
+ chset->pw_ch_pairs_coeffs[0][i] = 0;
+ }
+ } else {
+ for (i = 0; i < chset->channels; i++)
+ chset->orig_chan_order[0][i] =
+ chset->orig_chan_order_inv[0][i] = i;
+ for (i = 0; i < chset->channels / 2; i++)
+ chset->pw_ch_pairs_coeffs[0][i] = 0;
+ }
+ /* Adaptive prediction order */
+ chset->adapt_order_max[0] = 0;
+ for (i = 0; i < chset->channels; i++) {
+ chset->adapt_order[0][i] = get_bits(&s->gb, 4);
+ if (chset->adapt_order_max[0] < chset->adapt_order[0][i])
+ chset->adapt_order_max[0] = chset->adapt_order[0][i];
+ }
+ /* Fixed prediction order, used in case the adaptive order
+ * above is zero */
+ for (i = 0; i < chset->channels; i++)
+ chset->fixed_order[0][i] =
+ chset->adapt_order[0][i] ? 0 : get_bits(&s->gb, 2);
+
+ for (i = 0; i < chset->channels; i++) {
+ unsigned j;
+ for (j = 0; j < chset->adapt_order[0][i]; j++)
+ chset->lpc_refl_coeffs_q_ind[0][i][j] = get_bits(&s->gb, 8);
+ }
+
+ if (s->xll_scalable_lsb) {
+ chset->lsb_fsize[0] = get_bits(&s->gb, s->xll_bits4seg_size);
+
+ for (i = 0; i < chset->channels; i++)
+ chset->scalable_lsbs[0][i] = get_bits(&s->gb, 4);
+ for (i = 0; i < chset->channels; i++)
+ chset->bit_width_adj_per_ch[0][i] = get_bits(&s->gb, 4);
+ } else {
+ memset(chset->scalable_lsbs[0], 0,
+ chset->channels * sizeof(chset->scalable_lsbs[0][0]));
+ memset(chset->bit_width_adj_per_ch[0], 0,
+ chset->channels * sizeof(chset->bit_width_adj_per_ch[0][0]));
+ }
+
+ s->xll_channels += chset->channels;
+ s->xll_residual_channels += chset->channels -
+ av_popcount(chset->residual_encode);
+
+ /* FIXME: Parse header data for extra frequency bands. */
+
+ /* Skip to end of channel set sub header. */
+ i = get_bits_count(&s->gb);
+ if (hdr_pos + 8 * hdr_size < i) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "chset header too large, %d bits, should be <= %d bits\n",
+ i - hdr_pos, 8 * hdr_size);
+ return AVERROR_INVALIDDATA;
+ }
+ if (hdr_pos + 8 * hdr_size > i)
+ skip_bits_long(&s->gb, hdr_pos + 8 * hdr_size - i);
+ }
+ return 0;
+}
+
+/* parse XLL navigation table */
+int ff_dca_xll_decode_navi(DCAContext *s, int asset_end)
+{
+ int nbands, band, chset, seg, data_start;
+
+ /* FIXME: Supports only a single frequency band */
+ nbands = 1;
+
+ for (band = 0; band < nbands; band++) {
+ s->xll_navi.band_size[band] = 0;
+ for (seg = 0; seg < s->xll_segments; seg++) {
+ /* Note: The spec, ETSI TS 102 114 V1.4.1 (2012-09), says
+ * we should read a base value for segment_size from the
+ * stream, before reading the sizes of the channel sets.
+ * But that's apparently incorrect. */
+ s->xll_navi.segment_size[band][seg] = 0;
+
+ for (chset = 0; chset < s->xll_nch_sets; chset++)
+ if (band < s->xll_chsets[chset].num_freq_bands) {
+ s->xll_navi.chset_size[band][seg][chset] =
+ get_bits(&s->gb, s->xll_bits4seg_size) + 1;
+ s->xll_navi.segment_size[band][seg] +=
+ s->xll_navi.chset_size[band][seg][chset];
+ }
+ s->xll_navi.band_size[band] += s->xll_navi.segment_size[band][seg];
+ }
+ }
+ /* Align to 8 bits and skip 16-bit CRC. */
+ skip_bits_long(&s->gb, 16 + ((-get_bits_count(&s->gb)) & 7));
+
+ data_start = get_bits_count(&s->gb);
+ if (data_start + 8 * s->xll_navi.band_size[0] > asset_end) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "XLL: Data in NAVI table exceeds containing asset\n"
+ "start: %d (bit), size %u (bytes), end %d (bit), error %u\n",
+ data_start, s->xll_navi.band_size[0], asset_end,
+ data_start + 8 * s->xll_navi.band_size[0] - asset_end);
+ return AVERROR_INVALIDDATA;
+ }
+ init_get_bits(&s->xll_navi.gb, s->gb.buffer + data_start / 8,
+ 8 * s->xll_navi.band_size[0]);
+ return 0;
+}
+
+static void dca_xll_inv_adapt_pred(int *samples, int nsamples, unsigned order,
+ const int *prev, const uint8_t *q_ind)
+{
+ static const uint16_t table[0x81] = {
+ 0, 3070, 5110, 7140, 9156, 11154, 13132, 15085,
+ 17010, 18904, 20764, 22588, 24373, 26117, 27818, 29474,
+ 31085, 32648, 34164, 35631, 37049, 38418, 39738, 41008,
+ 42230, 43404, 44530, 45609, 46642, 47630, 48575, 49477,
+ 50337, 51157, 51937, 52681, 53387, 54059, 54697, 55302,
+ 55876, 56421, 56937, 57426, 57888, 58326, 58741, 59132,
+ 59502, 59852, 60182, 60494, 60789, 61066, 61328, 61576,
+ 61809, 62029, 62236, 62431, 62615, 62788, 62951, 63105,
+ 63250, 63386, 63514, 63635, 63749, 63855, 63956, 64051,
+ 64140, 64224, 64302, 64376, 64446, 64512, 64573, 64631,
+ 64686, 64737, 64785, 64830, 64873, 64913, 64950, 64986,
+ 65019, 65050, 65079, 65107, 65133, 65157, 65180, 65202,
+ 65222, 65241, 65259, 65275, 65291, 65306, 65320, 65333,
+ 65345, 65357, 65368, 65378, 65387, 65396, 65405, 65413,
+ 65420, 65427, 65434, 65440, 65446, 65451, 65456, 65461,
+ 65466, 65470, 65474, 65478, 65481, 65485, 65488, 65491,
+ 65535, /* Final value is for the -128 corner case, see below. */
+ };
+ int c[DCA_XLL_AORDER_MAX];
+ int64_t s;
+ unsigned i, j;
+
+ for (i = 0; i < order; i++) {
+ if (q_ind[i] & 1)
+ /* The index value 0xff corresponds to a lookup of entry 0x80 in
+ * the table, and no value is provided in the specification. */
+ c[i] = -table[(q_ind[i] >> 1) + 1];
+ else
+ c[i] = table[q_ind[i] >> 1];
+ }
+ /* The description in the spec is a bit convoluted. We can convert
+ * the reflected values to direct values in place, using a
+ * sequence of reflections operating on two values. */
+ for (i = 1; i < order; i++) {
+ /* i = 1: scale c[0]
+ * i = 2: reflect c[0] <-> c[1]
+ * i = 3: scale c[1], reflect c[0] <-> c[2]
+ * i = 4: reflect c[0] <-> c[3] reflect c[1] <-> c[2]
+ * ... */
+ if (i & 1)
+ c[i / 2] += ((int64_t) c[i] * c[i / 2] + 0x8000) >> 16;
+ for (j = 0; j < i / 2; j++) {
+ int r0 = c[j];
+ int r1 = c[i - j - 1];
+ c[j] += ((int64_t) c[i] * r1 + 0x8000) >> 16;
+ c[i - j - 1] += ((int64_t) c[i] * r0 + 0x8000) >> 16;
+ }
+ }
+ /* Apply predictor. */
+ /* NOTE: Processing samples in this order means that the
+ * predictor is applied to the newly reconstructed samples. */
+ if (prev) {
+ for (i = 0; i < order; i++) {
+ for (j = s = 0; j < i; j++)
+ s += (int64_t) c[j] * samples[i - 1 - j];
+ for (; j < order; j++)
+ s += (int64_t) c[j] * prev[DCA_XLL_AORDER_MAX + i - 1 - j];
+
+ samples[i] -= av_clip((s + 0x8000) >> 16, -0x1000000, 0xffffff);
+ }
+ }
+ for (i = order; i < nsamples; i++) {
+ for (j = s = 0; j < order; j++)
+ s += (int64_t) c[j] * samples[i - 1 - j];
+
+ /* NOTE: Equations seem to imply addition, while the
+ * pseudocode seems to use subtraction.*/
+ samples[i] -= av_clip((s + 0x8000) >> 16, -0x1000000, 0xffffff);
+ }
+}
+
+int ff_dca_xll_decode_audio(DCAContext *s, AVFrame *frame)
+{
+ /* FIXME: Decodes only the first frequency band. */
+ int seg, chset_i;
+
+ /* Coding parameters for each channel set. */
+ struct coding_params {
+ int seg_type;
+ int rice_code_flag[16];
+ int pancAuxABIT[16];
+ int pancABIT0[16]; /* Not sure what this is */
+ int pancABIT[16]; /* Not sure what this is */
+ int nSamplPart0[16];
+ } param_state[16];
+
+ GetBitContext *gb = &s->xll_navi.gb;
+ int *history;
+
+ /* Layout: First the sample buffer for one segment per channel,
+ * followed by history buffers of DCA_XLL_AORDER_MAX samples for
+ * each channel. */
+ av_fast_malloc(&s->xll_sample_buf, &s->xll_sample_buf_size,
+ (s->xll_smpl_in_seg + DCA_XLL_AORDER_MAX) *
+ s->xll_channels * sizeof(*s->xll_sample_buf));
+ if (!s->xll_sample_buf)
+ return AVERROR(ENOMEM);
+
+ history = s->xll_sample_buf + s->xll_smpl_in_seg * s->xll_channels;
+
+ for (seg = 0; seg < s->xll_segments; seg++) {
+ unsigned in_channel;
+
+ for (chset_i = in_channel = 0; chset_i < s->xll_nch_sets; chset_i++) {
+ /* The spec isn't very explicit, but I think the NAVI sizes are in bytes. */
+ int end_pos = get_bits_count(gb) +
+ 8 * s->xll_navi.chset_size[0][seg][chset_i];
+ int i, j;
+ struct coding_params *params = &param_state[chset_i];
+ /* I think this flag means that we should keep seg_type and
+ * other parameters from the previous segment. */
+ int use_seg_state_code_param;
+ XllChSetSubHeader *chset = &s->xll_chsets[chset_i];
+ if (in_channel >= s->avctx->channels)
+ /* FIXME: Could go directly to next segment */
+ goto next_chset;
+
+ if (s->avctx->sample_rate != chset->sampling_frequency) {
+ av_log(s->avctx, AV_LOG_WARNING,
+ "XLL: unexpected chset sample rate %d, expected %d\n",
+ chset->sampling_frequency, s->avctx->sample_rate);
+ goto next_chset;
+ }
+ if (seg != 0)
+ use_seg_state_code_param = get_bits(gb, 1);
+ else
+ use_seg_state_code_param = 0;
+
+ if (!use_seg_state_code_param) {
+ int num_param_sets, i;
+ unsigned bits4ABIT;
+
+ params->seg_type = get_bits(gb, 1);
+ num_param_sets = params->seg_type ? 1 : chset->channels;
+
+ if (chset->bit_width > 16) {
+ bits4ABIT = 5;
+ } else {
+ if (chset->bit_width > 8)
+ bits4ABIT = 4;
+ else
+ bits4ABIT = 3;
+ if (s->xll_nch_sets > 1)
+ bits4ABIT++;
+ }
+
+ for (i = 0; i < num_param_sets; i++) {
+ params->rice_code_flag[i] = get_bits(gb, 1);
+ if (!params->seg_type && params->rice_code_flag[i] && get_bits(gb, 1))
+ params->pancAuxABIT[i] = get_bits(gb, bits4ABIT) + 1;
+ else
+ params->pancAuxABIT[i] = 0;
+ }
+
+ for (i = 0; i < num_param_sets; i++) {
+ if (!seg) {
+ /* Parameters for part 1 */
+ params->pancABIT0[i] = get_bits(gb, bits4ABIT);
+ if (params->rice_code_flag[i] == 0 && params->pancABIT0[i] > 0)
+ /* For linear code */
+ params->pancABIT0[i]++;
+
+ /* NOTE: In the spec, not indexed by band??? */
+ if (params->seg_type == 0)
+ params->nSamplPart0[i] = chset->adapt_order[0][i];
+ else
+ params->nSamplPart0[i] = chset->adapt_order_max[0];
+ } else
+ params->nSamplPart0[i] = 0;
+
+ /* Parameters for part 2 */
+ params->pancABIT[i] = get_bits(gb, bits4ABIT);
+ if (params->rice_code_flag[i] == 0 && params->pancABIT[i] > 0)
+ /* For linear code */
+ params->pancABIT[i]++;
+ }
+ }
+ for (i = 0; i < chset->channels; i++) {
+ int param_index = params->seg_type ? 0 : i;
+ int bits = params->pancABIT0[param_index];
+ int part0 = params->nSamplPart0[param_index];
+ int *sample_buf = s->xll_sample_buf +
+ (in_channel + i) * s->xll_smpl_in_seg;
+
+ if (!params->rice_code_flag[param_index]) {
+ /* Linear code */
+ if (bits)
+ for (j = 0; j < part0; j++)
+ sample_buf[j] = get_bits_sm(gb, bits);
+ else
+ memset(sample_buf, 0, part0 * sizeof(sample_buf[0]));
+
+ /* Second part */
+ bits = params->pancABIT[param_index];
+ if (bits)
+ for (j = part0; j < s->xll_smpl_in_seg; j++)
+ sample_buf[j] = get_bits_sm(gb, bits);
+ else
+ memset(sample_buf + part0, 0,
+ (s->xll_smpl_in_seg - part0) * sizeof(sample_buf[0]));
+ } else {
+ int aux_bits = params->pancAuxABIT[param_index];
+
+ for (j = 0; j < part0; j++) {
+ /* FIXME: Is this identical to Golomb code? */
+ int t = get_unary(gb, 1, 33) << bits;
+ /* FIXME: Could move this test outside of the loop, for efficiency. */
+ if (bits)
+ t |= get_bits(gb, bits);
+ sample_buf[j] = (t & 1) ? -(t >> 1) - 1 : (t >> 1);
+ }
+
+ /* Second part */
+ bits = params->pancABIT[param_index];
+
+ /* Follow the spec's suggestion of using the
+ * buffer also to store the hybrid-rice flags. */
+ memset(sample_buf + part0, 0,
+ (s->xll_smpl_in_seg - part0) * sizeof(sample_buf[0]));
+
+ if (aux_bits > 0) {
+ /* For hybrid rice encoding, some samples are linearly
+ * coded. According to the spec, "nBits4SamplLoci" bits
+ * are used for each index, but this value is not
+ * defined. I guess we should use log2(xll_smpl_in_seg)
+ * bits. */
+ int count = get_bits(gb, s->xll_log_smpl_in_seg);
+ av_log(s->avctx, AV_LOG_DEBUG, "aux count %d (bits %d)\n",
+ count, s->xll_log_smpl_in_seg);
+
+ for (j = 0; j < count; j++)
+ sample_buf[get_bits(gb, s->xll_log_smpl_in_seg)] = 1;
+ }
+ for (j = part0; j < s->xll_smpl_in_seg; j++) {
+ if (!sample_buf[j]) {
+ int t = get_unary(gb, 1, 33);
+ if (bits)
+ t = (t << bits) | get_bits(gb, bits);
+ sample_buf[j] = (t & 1) ? -(t >> 1) - 1 : (t >> 1);
+ } else
+ sample_buf[j] = get_bits_sm(gb, aux_bits);
+ }
+ }
+ }
+
+ for (i = 0; i < chset->channels; i++) {
+ unsigned adapt_order = chset->adapt_order[0][i];
+ int *sample_buf = s->xll_sample_buf +
+ (in_channel + i) * s->xll_smpl_in_seg;
+ int *prev = history + (in_channel + i) * DCA_XLL_AORDER_MAX;
+
+ if (!adapt_order) {
+ unsigned order;
+ for (order = chset->fixed_order[0][i]; order > 0; order--) {
+ unsigned j;
+ for (j = 1; j < s->xll_smpl_in_seg; j++)
+ sample_buf[j] += sample_buf[j - 1];
+ }
+ } else
+ /* Inverse adaptive prediction, in place. */
+ dca_xll_inv_adapt_pred(sample_buf, s->xll_smpl_in_seg,
+ adapt_order, seg ? prev : NULL,
+ chset->lpc_refl_coeffs_q_ind[0][i]);
+ memcpy(prev, sample_buf + s->xll_smpl_in_seg - DCA_XLL_AORDER_MAX,
+ DCA_XLL_AORDER_MAX * sizeof(*prev));
+ }
+ for (i = 1; i < chset->channels; i += 2) {
+ int coeff = chset->pw_ch_pairs_coeffs[0][i / 2];
+ if (coeff != 0) {
+ int *sample_buf = s->xll_sample_buf +
+ (in_channel + i) * s->xll_smpl_in_seg;
+ int *prev = sample_buf - s->xll_smpl_in_seg;
+ unsigned j;
+ for (j = 0; j < s->xll_smpl_in_seg; j++)
+ /* Shift is unspecified, but should apparently be 3. */
+ sample_buf[j] += ((int64_t) coeff * prev[j] + 4) >> 3;
+ }
+ }
+
+ if (s->xll_scalable_lsb) {
+ int lsb_start = end_pos - 8 * chset->lsb_fsize[0] -
+ 8 * (s->xll_banddata_crc & 2);
+ int done;
+ i = get_bits_count(gb);
+ if (i > lsb_start) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "chset data lsb exceeds NAVI size, end_pos %d, lsb_start %d, pos %d\n",
+ end_pos, lsb_start, i);
+ return AVERROR_INVALIDDATA;
+ }
+ if (i < lsb_start)
+ skip_bits_long(gb, lsb_start - i);
+
+ for (i = done = 0; i < chset->channels; i++) {
+ int bits = chset->scalable_lsbs[0][i];
+ if (bits > 0) {
+ /* The channel reordering is conceptually done
+ * before adding the lsb:s, so we need to do
+ * the inverse permutation here. */
+ unsigned pi = chset->orig_chan_order_inv[0][i];
+ int *sample_buf = s->xll_sample_buf +
+ (in_channel + pi) * s->xll_smpl_in_seg;
+ int adj = chset->bit_width_adj_per_ch[0][i];
+ int msb_shift = bits;
+ unsigned j;
+
+ if (adj > 0)
+ msb_shift += adj - 1;
+
+ for (j = 0; j < s->xll_smpl_in_seg; j++)
+ sample_buf[j] = (sample_buf[j] << msb_shift) +
+ (get_bits(gb, bits) << adj);
+
+ done += bits * s->xll_smpl_in_seg;
+ }
+ }
+ if (done > 8 * chset->lsb_fsize[0]) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "chset lsb exceeds lsb_size\n");
+ return AVERROR_INVALIDDATA;
+ }
+ }
+
+ /* Store output. */
+ for (i = 0; i < chset->channels; i++) {
+ int *sample_buf = s->xll_sample_buf +
+ (in_channel + i) * s->xll_smpl_in_seg;
+ int shift = 1 - chset->bit_resolution;
+ int out_channel = chset->orig_chan_order[0][i];
+ float *out;
+
+ /* XLL uses the channel order C, L, R, and we want L,
+ * R, C. FIXME: Generalize. */
+ if (chset->ch_mask_enabled &&
+ (chset->ch_mask & 7) == 7 && out_channel < 3)
+ out_channel = out_channel ? out_channel - 1 : 2;
+
+ out_channel += in_channel;
+ if (out_channel >= s->avctx->channels)
+ continue;
+
+ out = (float *) frame->extended_data[out_channel];
+ out += seg * s->xll_smpl_in_seg;
+
+ /* NOTE: A one bit means residual encoding is *not* used. */
+ if ((chset->residual_encode >> i) & 1) {
+ /* Replace channel samples.
+ * FIXME: Most likely not the right thing to do. */
+ for (j = 0; j < s->xll_smpl_in_seg; j++)
+ out[j] = ldexpf(sample_buf[j], shift);
+ } else {
+ /* Add residual signal to core channel */
+ for (j = 0; j < s->xll_smpl_in_seg; j++)
+ out[j] += ldexpf(sample_buf[j], shift);
+ }
+ }
+
+ if (chset->downmix_coeff_code_embedded &&
+ !chset->primary_ch_set && chset->hier_chset) {
+ /* Undo hierarchical downmix of earlier channels. */
+ unsigned mix_channel;
+ for (mix_channel = 0; mix_channel < in_channel; mix_channel++) {
+ float *mix_buf;
+ const int *col;
+ float coeff;
+ unsigned row;
+ /* Similar channel reorder C, L, R vs L, R, C reorder. */
+ if (chset->ch_mask_enabled &&
+ (chset->ch_mask & 7) == 7 && mix_channel < 3)
+ mix_buf = (float *) frame->extended_data[mix_channel ? mix_channel - 1 : 2];
+ else
+ mix_buf = (float *) frame->extended_data[mix_channel];
+
+ mix_buf += seg * s->xll_smpl_in_seg;
+ col = &chset->downmix_coeffs[mix_channel * (chset->channels + 1)];
+
+ /* Scale */
+ coeff = ldexpf(col[0], -16);
+ for (j = 0; j < s->xll_smpl_in_seg; j++)
+ mix_buf[j] *= coeff;
+
+ for (row = 0;
+ row < chset->channels && in_channel + row < s->avctx->channels;
+ row++)
+ if (col[row + 1]) {
+ const float *new_channel =
+ (const float *) frame->extended_data[in_channel + row];
+ new_channel += seg * s->xll_smpl_in_seg;
+ coeff = ldexpf(col[row + 1], -15);
+ for (j = 0; j < s->xll_smpl_in_seg; j++)
+ mix_buf[j] -= coeff * new_channel[j];
+ }
+ }
+ }
+
+next_chset:
+ in_channel += chset->channels;
+ /* Skip to next channel set using the NAVI info. */
+ i = get_bits_count(gb);
+ if (i > end_pos) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "chset data exceeds NAVI size\n");
+ return AVERROR_INVALIDDATA;
+ }
+ if (i < end_pos)
+ skip_bits_long(gb, end_pos - i);
+ }
+ }
+ return 0;
+}
diff --git a/libavcodec/dcadata.c b/libavcodec/dcadata.c
index 47fb9c5..1db1938 100644
--- a/libavcodec/dcadata.c
+++ b/libavcodec/dcadata.c
@@ -7522,6 +7522,600 @@ DECLARE_ALIGNED(16, const float, ff_dca_lfe_fir_128)[256] = {
};
#undef SCALE
+
+#define SCALE(c) ((float)(c) / (256.0f * 32768.0f * 8388608.0f))
+DECLARE_ALIGNED(16, const float, ff_dca_lfe_xll_fir_64)[256] = {
+ SCALE( 6103), SCALE( 52170), SCALE(-558064), SCALE(1592440),
+ SCALE(6290049), SCALE(1502534), SCALE(-546669), SCALE( 53047),
+ SCALE( 1930), SCALE( 51089), SCALE(-568920), SCALE(1683709),
+ SCALE(6286575), SCALE(1414057), SCALE(-534782), SCALE( 53729),
+ SCALE( 2228), SCALE( 49794), SCALE(-579194), SCALE(1776276),
+ SCALE(6279634), SCALE(1327070), SCALE(-522445), SCALE( 54228),
+ SCALE( 2552), SCALE( 48275), SCALE(-588839), SCALE(1870070),
+ SCALE(6269231), SCALE(1241632), SCALE(-509702), SCALE( 54550),
+ SCALE( 2904), SCALE( 46523), SCALE(-597808), SCALE(1965017),
+ SCALE(6255380), SCALE(1157798), SCALE(-496595), SCALE( 54708),
+ SCALE( 3287), SCALE( 44529), SCALE(-606054), SCALE(2061044),
+ SCALE(6238099), SCALE(1075621), SCALE(-483164), SCALE( 54710),
+ SCALE( 3704), SCALE( 42282), SCALE(-613529), SCALE(2158071),
+ SCALE(6217408), SCALE( 995149), SCALE(-469451), SCALE( 54566),
+ SCALE( 4152), SCALE( 39774), SCALE(-620186), SCALE(2256019),
+ SCALE(6193332), SCALE( 916430), SCALE(-455494), SCALE( 54285),
+ SCALE( 4631), SCALE( 36995), SCALE(-625976), SCALE(2354805),
+ SCALE(6165900), SCALE( 839507), SCALE(-441330), SCALE( 53876),
+ SCALE( 5139), SCALE( 33937), SCALE(-630850), SCALE(2454343),
+ SCALE(6135146), SCALE( 764419), SCALE(-426998), SCALE( 53348),
+ SCALE( 5682), SCALE( 30591), SCALE(-634759), SCALE(2554547),
+ SCALE(6101107), SCALE( 691203), SCALE(-412531), SCALE( 52711),
+ SCALE( 6264), SCALE( 26948), SCALE(-637655), SCALE(2655326),
+ SCALE(6063824), SCALE( 619894), SCALE(-397966), SCALE( 51972),
+ SCALE( 6886), SCALE( 23001), SCALE(-639488), SCALE(2756591),
+ SCALE(6023343), SCALE( 550521), SCALE(-383335), SCALE( 51140),
+ SCALE( 7531), SCALE( 18741), SCALE(-640210), SCALE(2858248),
+ SCALE(5979711), SCALE( 483113), SCALE(-368671), SCALE( 50224),
+ SCALE( 8230), SCALE( 14162), SCALE(-639772), SCALE(2960201),
+ SCALE(5932981), SCALE( 417692), SCALE(-354003), SCALE( 49231),
+ SCALE( 8959), SCALE( 9257), SCALE(-638125), SCALE(3062355),
+ SCALE(5883210), SCALE( 354281), SCALE(-339362), SCALE( 48168),
+ SCALE( 9727), SCALE( 4018), SCALE(-635222), SCALE(3164612),
+ SCALE(5830457), SCALE( 292897), SCALE(-324777), SCALE( 47044),
+ SCALE( 10535), SCALE( -1558), SCALE(-631014), SCALE(3266872),
+ SCALE(5774785), SCALE( 233555), SCALE(-310273), SCALE( 45866),
+ SCALE( 11381), SCALE( -7480), SCALE(-625455), SCALE(3369035),
+ SCALE(5716260), SCALE( 176267), SCALE(-295877), SCALE( 44640),
+ SCALE( 12267), SCALE( -13750), SCALE(-618499), SCALE(3471000),
+ SCALE(5654952), SCALE( 121042), SCALE(-281613), SCALE( 43373),
+ SCALE( 13190), SCALE( -20372), SCALE(-610098), SCALE(3572664),
+ SCALE(5590933), SCALE( 67886), SCALE(-267505), SCALE( 42072),
+ SCALE( 14152), SCALE( -27352), SCALE(-600209), SCALE(3673924),
+ SCALE(5524280), SCALE( 16800), SCALE(-253574), SCALE( 40743),
+ SCALE( 15153), SCALE( -34691), SCALE(-588788), SCALE(3774676),
+ SCALE(5455069), SCALE( -32214), SCALE(-239840), SCALE( 39391),
+ SCALE( 16192), SCALE( -42390), SCALE(-575791), SCALE(3874816),
+ SCALE(5383383), SCALE( -79159), SCALE(-226323), SCALE( 38022),
+ SCALE( 17267), SCALE( -50453), SCALE(-561178), SCALE(3974239),
+ SCALE(5309305), SCALE(-124041), SCALE(-213041), SCALE( 36642),
+ SCALE( 18377), SCALE( -58879), SCALE(-544906), SCALE(4072841),
+ SCALE(5232922), SCALE(-166869), SCALE(-200010), SCALE( 35256),
+ SCALE( 19525), SCALE( -67667), SCALE(-526937), SCALE(4170517),
+ SCALE(5154321), SCALE(-207653), SCALE(-187246), SCALE( 33866),
+ SCALE( 20704), SCALE( -76817), SCALE(-507233), SCALE(4267162),
+ SCALE(5073593), SCALE(-246406), SCALE(-174764), SCALE( 32480),
+ SCALE( 21915), SCALE( -86327), SCALE(-485757), SCALE(4362672),
+ SCALE(4990831), SCALE(-283146), SCALE(-162575), SCALE( 31101),
+ SCALE( 23157), SCALE( -96193), SCALE(-462476), SCALE(4456942),
+ SCALE(4906129), SCALE(-317890), SCALE(-150692), SCALE( 29732),
+ SCALE( 24426), SCALE(-106412), SCALE(-437356), SCALE(4549871),
+ SCALE(4819584), SCALE(-350658), SCALE(-139125), SCALE( 28376),
+ SCALE( 25721), SCALE(-116977), SCALE(-410365), SCALE(4641355),
+ SCALE(4731293), SCALE(-381475), SCALE(-127884), SCALE( 27038),
+};
+#undef SCALE
+
+DECLARE_ALIGNED(16, const float, ff_dca_fir_64bands)[1024] = {
+ /* Bank 0 */
+ -7.1279389866041690e-8, -7.0950903150874990e-8,
+ -7.9525034321375090e-8, -8.9326871281374790e-8,
+ -9.7483190494874640e-8, -1.0586659510721950e-7,
+ -1.1527363411865760e-7, -1.2523109645615350e-7,
+ -1.3555636137971380e-7, -1.4640931821191640e-7,
+ -1.5787424998123710e-7, -1.6994592926571220e-7,
+ -1.8264184311018150e-7, -1.9600594587757850e-7,
+ -2.1007899706006800e-7, -2.2489759047553620e-7,
+ -2.4050245877923400e-7, -2.5693874615777660e-7,
+ -2.7425370308549580e-7, -2.9249662541757600e-7,
+ -3.1171981968268900e-7, -3.3197864040473180e-7,
+ -3.5333134588843600e-7, -3.7583910465412180e-7,
+ -3.9956628121669190e-7, -4.2458045296159330e-7,
+ -4.5095249563698380e-7, -4.7875659112606760e-7,
+ -5.0807031294631050e-7, -5.3897464223335550e-7,
+ -5.7155423388793000e-7, -6.0589741192019800e-7,
+ -6.4209580087853050e-7, -6.8024432849991400e-7,
+ -7.2044165259013450e-7, -7.6279018172077200e-7,
+ -8.0739610368280600e-7, -8.5436937020293650e-7,
+ -9.0382333224895500e-7, -9.5587472540498280e-7,
+ -1.0106437128213760e-6, -1.0682538906146330e-6,
+ -1.1288323637155430e-6, -1.1925097184646100e-6,
+ -1.2594193438633260e-6, -1.3296974052300520e-6,
+ -1.4034829433780260e-6, -1.4809178634979940e-6,
+ -1.5621465913980060e-6, -1.6473160377545360e-6,
+ -1.7365751553971340e-6, -1.8300749104526120e-6,
+ -1.9279680902322050e-6, -2.0304092660990760e-6,
+ -2.1375541686662320e-6, -2.2495596253776460e-6,
+ -2.3665828120950560e-6, -2.4887811970856540e-6,
+ -2.6163120571644820e-6, -2.7493324266391140e-6,
+ -2.8879984579501380e-6, -3.0324653639203880e-6,
+ -3.1828867865974640e-6, -3.3394147240855820e-6,
+ -3.5021985520037540e-6, -3.6713849262294680e-6,
+ -3.8471166218015830e-6, -4.0295324657699800e-6,
+ -4.2187670209852250e-6, -4.4149505043312320e-6,
+ -4.6182073040543900e-6, -4.8286558658894680e-6,
+ -5.0464076705003400e-6, -5.2715671455405850e-6,
+ -5.5042307535458100e-6, -5.7444868785028750e-6,
+ -5.9924142424804800e-6, -6.2480817863072800e-6,
+ -6.5115476278604000e-6, -6.7828589565804950e-6,
+ -7.0620507545154100e-6, -7.3491456697144900e-6,
+ -7.6441525098592000e-6, -7.9470661364365490e-6,
+ -8.2578666429227760e-6, -8.5765192154768100e-6,
+ -8.9029718900122000e-6, -9.2371554195468400e-6,
+ -9.5789825988253100e-6, -9.9283481667264540e-6,
+ -1.0285127334608450e-5, -1.0649175634328590e-5,
+ -1.1020327046334650e-5, -1.1398393880881060e-5,
+ -1.1783166036693560e-5, -1.2174410889256530e-5,
+ -1.2571871574469220e-5, -1.2975266858030310e-5,
+ -1.3384289978242060e-5, -1.3798608540965960e-5,
+ -1.4217863365843780e-5, -1.4641668383496450e-5,
+ -1.5069609527679710e-5, -1.5501244597782600e-5,
+ -1.5936101341640500e-5, -1.6373677426466900e-5,
+ -1.6813441716539560e-5, -1.7254834143068570e-5,
+ -1.7697261563607500e-5, -1.8140097714618200e-5,
+ -1.8582686308483550e-5, -1.9024340970099240e-5,
+ -1.9464340744880170e-5, -1.9901930030141080e-5,
+ -2.0336321557464510e-5, -2.0766696417773940e-5,
+ -2.1192201630574280e-5, -2.1611950084231910e-5,
+ -2.2025021652894630e-5, -2.2430463239517170e-5,
+ -2.2827288605503470e-5, -2.3214478371918170e-5,
+ -2.3590980216497750e-5, -2.3955708939763280e-5,
+ -2.4307547722489910e-5, -2.4645348200903720e-5,
+ -2.4967930863542620e-5, -2.5274085082324960e-5,
+ /* Bank 1 */
+ 2.5562569399199020e-5, 2.5832111724562040e-5,
+ 2.6081413415833200e-5, 2.6309149390520640e-5,
+ 2.6513966535124460e-5, 2.6694483850464800e-5,
+ 2.6849297239997120e-5, 2.6976979753245170e-5,
+ 2.7076082153012070e-5, 2.7145133103663890e-5,
+ 2.7182642746157720e-5, 2.7187102980536760e-5,
+ 2.7156990105794550e-5, 2.7090765064735940e-5,
+ 2.6986876191054700e-5, 2.6843759539035120e-5,
+ 2.6659843389908530e-5, 2.6433548592482960e-5,
+ 2.6163291550639320e-5, 2.5847484577439320e-5,
+ 2.5484540698002960e-5, 2.5072874052447260e-5,
+ 2.4610903957661350e-5, 2.4097055300584120e-5,
+ 2.3529763128539150e-5, 2.2907473117403740e-5,
+ 2.2228647280994560e-5, 2.1491764461832140e-5,
+ 2.0695325418576370e-5, 1.9837853265502040e-5,
+ /* NOTE: The spec has a duplicated row "160 | 1.7934037335534700e-5" ! */
+ 1.8917898053528080e-5, 1.7934037335534700e-5,
+ 1.6884884022311310e-5, 1.5769086921577900e-5,
+ 1.4585334740507920e-5, 1.3332356590263080e-5,
+ 1.2008929083235120e-5, 1.0613876973541650e-5,
+ 9.1460801506922300e-6, 7.6044740757265500e-6,
+ 5.9880523825897000e-6, 4.2958677847708840e-6,
+ 2.5270494199802070e-6, 6.8080315386959900e-7,
+ -1.2435990827839660e-6, -3.2468187066945930e-6,
+ -5.3294268968052800e-6, -7.4919036559427900e-6,
+ -9.7346407524871100e-6, -1.2057941408635810e-5,
+ -1.4462010500550970e-5, -1.6946953848107710e-5,
+ -1.9512772389215240e-5, -2.2159361597292710e-5,
+ -2.4886504491416160e-5, -2.7693871041862060e-5,
+ -3.0581012081916960e-5, -3.3547358765259040e-5,
+ -3.6592216716540970e-5, -3.9714765485539260e-5,
+ -4.2914052387856640e-5, -4.6188991961724560e-5,
+ -4.9538360176954340e-5, -5.2960794000140600e-5,
+ -5.6454787620185350e-5, -6.0018691972791050e-5,
+ -6.3650708053788550e-5, -6.7348886525882700e-5,
+ -7.1111125753722860e-5, -7.4935171411178040e-5,
+ -7.8818609806320000e-5, -8.2758867628623800e-5,
+ -8.6753213062403400e-5, -9.0798755482139240e-5,
+ -9.4892437636254000e-5, -9.9031035415475500e-5,
+ -1.0321116057304920e-4, -1.0742926070674010e-4,
+ -1.1168161614264270e-4, -1.1596433966772030e-4,
+ -1.2027337376184880e-4, -1.2460449089034750e-4,
+ -1.2895330270761850e-4, -1.3331525983885840e-4,
+ -1.3768563787408340e-4, -1.4205953760578120e-4,
+ -1.4643190426323540e-4, -1.5079752791692290e-4,
+ -1.5515103314094370e-4, -1.5948687909058970e-4,
+ -1.6379937154642740e-4, -1.6808266356446820e-4,
+ -1.7233075773584680e-4, -1.7653750646560020e-4,
+ -1.8069661584612290e-4, -1.8480164638953740e-4,
+ -1.8884602526638050e-4, -1.9282304696531290e-4,
+ -1.9672587556804270e-4, -2.0054754547108610e-4,
+ -2.0428097498957360e-4, -2.0791896735659270e-4,
+ -2.1145421910491280e-4, -2.1487932080488700e-4,
+ -2.1818676491655660e-4, -2.2136894706917190e-4,
+ -2.2441818635854840e-4, -2.2732672676686290e-4,
+ -2.3008674810081220e-4, -2.3269036653525150e-4,
+ -2.3512963563507800e-4, -2.3739654799291240e-4,
+ -2.3948307023621970e-4, -2.4138114593372380e-4,
+ -2.4308272452941820e-4, -2.4457975717687980e-4,
+ -2.4586407616017000e-4, -2.4692741569938220e-4,
+ -2.4776199025177680e-4, -2.4836046092637280e-4,
+ -2.4871461830381660e-4, -2.4881540457247040e-4,
+ -2.4865471770248810e-4, -2.4822543333608940e-4,
+ -2.4752008219951220e-4, -2.4653081794176570e-4,
+ -2.4525003217524440e-4, -2.4367037437341020e-4,
+ /* Bank 2 */
+ 2.4178457457919800e-4, 2.3958543985834340e-4,
+ 2.3706595356421380e-4, 2.3421928008696620e-4,
+ 2.3103877007019660e-4, 2.2751796132972940e-4,
+ 2.2365059385031200e-4, 2.1943061159567880e-4,
+ 2.1485218733324290e-4, 2.0990972538755550e-4,
+ 2.0459789739171640e-4, 1.9891164424316180e-4,
+ 1.9284618337957900e-4, 1.8639701070854740e-4,
+ 1.7955993578371750e-4, 1.7233108395155490e-4,
+ 1.6470690840351980e-4, 1.5668419239382670e-4,
+ 1.4826008597798460e-4, 1.3943210818407590e-4,
+ 1.3019815804235450e-4, 1.2055651618705740e-4,
+ 1.1050586906665980e-4, 1.0004531116378850e-4,
+ 8.9174369623037550e-5, 7.7893006105444910e-5,
+ 6.6201632959158800e-5, 5.4101115008963200e-5,
+ 4.1592792755171040e-5, 2.8678484003389880e-5,
+ 1.5360496520469550e-5, 1.6416297019304470e-6,
+ -1.2474801400564880e-5, -2.6984964757674160e-5,
+ -4.1884506316022560e-5, -5.7168548169515050e-5,
+ -7.2831653374563650e-5, -8.8867825335203200e-5,
+ -1.0527052946041040e-4, -1.2203269185287530e-4,
+ -1.3914664880465400e-4, -1.5660414556657680e-4,
+ -1.7439635977956720e-4, -1.9251390142613000e-4,
+ -2.1094678833176480e-4, -2.2968444457655940e-4,
+ -2.4871569004884240e-4, -2.6802874127778880e-4,
+ -2.8761124019708440e-4, -3.0745025297166030e-4,
+ -3.2753221542219500e-4, -3.4784293347385130e-4,
+ -3.6836764760397900e-4, -3.8909103335715320e-4,
+ -4.0999714822829530e-4, -4.3106943097409840e-4,
+ -4.5229073958127750e-4, -4.7364335350426610e-4,
+ -4.9510898492628230e-4, -5.1666877822680600e-4,
+ -5.3830328700499900e-4, -5.5999247625413450e-4,
+ -5.8171579317559550e-4, -6.0345216810040500e-4,
+ -6.2517996394886800e-4, -6.4687697763330650e-4,
+ -6.6852052145861900e-4, -6.9008742526480550e-4,
+ -7.1155400216196750e-4, -7.3289605035434600e-4,
+ -7.5408892753413600e-4, -7.7510755325530950e-4,
+ -7.9592638676398950e-4, -8.1651942936660300e-4,
+ -8.3686029869896850e-4, -8.5692223230171550e-4,
+ -8.7667809201044900e-4, -8.9610036547340950e-4,
+ -9.1516119514986000e-4, -9.3383238324995840e-4,
+ -9.5208547141354700e-4, -9.6989174214394400e-4,
+ -9.8722217067251400e-4, -1.0040474297445790e-3,
+ -1.0203380430448350e-3, -1.0360643900964910e-3,
+ -1.0511966606168980e-3, -1.0657048556038330e-3,
+ -1.0795588568782010e-3, -1.0927284332850520e-3,
+ -1.1051833075734240e-3, -1.1168931605293980e-3,
+ -1.1278276550234160e-3, -1.1379564405661050e-3,
+ -1.1472492294891640e-3, -1.1556758000499310e-3,
+ -1.1632059885511800e-3, -1.1698096960154200e-3,
+ -1.1754570428998680e-3, -1.1801183720212010e-3,
+ -1.1837641581852870e-3, -1.1863650153060240e-3,
+ -1.1878919433902330e-3, -1.1883163316843900e-3,
+ -1.1876097809178440e-3, -1.1857441072376680e-3,
+ -1.1826916065321440e-3, -1.1784250628415020e-3,
+ -1.1729176690707690e-3, -1.1661430294353880e-3,
+ -1.1580752925519680e-3, -1.1486891568700730e-3,
+ -1.1379598570807350e-3, -1.1258631690530700e-3,
+ -1.1123755320313420e-3, -1.0974740543942100e-3,
+ -1.0811365181610850e-3, -1.0633413819325920e-3,
+ -1.0440678410743190e-3, -1.0232958338441730e-3,
+ -1.0010061160103870e-3, -9.7718026613602800e-4,
+ -9.5180072722007060e-4, -9.2485080945546600e-4,
+ -8.9631470926558100e-4, -8.6617751390929650e-4,
+ -8.3442528375666700e-4, -8.0104505655578600e-4,
+ /* Bank 3 */
+ 7.6602485902806300e-4, 7.2935371157849700e-4,
+ 6.9102172032639350e-4, 6.5102007948960100e-4,
+ 6.0934103180698750e-4, 5.6597787244591100e-4,
+ 5.2092507454409450e-4, 4.7417829303612970e-4,
+ 4.2573432329476060e-4, 3.7559110239316400e-4,
+ 3.2374777823389440e-4, 2.7020471361387040e-4,
+ 2.1496350652513040e-4, 1.5802699163104190e-4,
+ 9.9399252442146460e-5, 3.9085623279149610e-5,
+ -2.2907279717153710e-5, -8.6571556658577800e-5,
+ -1.5189801251884410e-4, -2.1887615668780720e-4,
+ -2.8749420455512610e-4, -3.5773907519488100e-4,
+ -4.2959633884346400e-4, -5.0305021853266900e-4,
+ -5.7808367853976800e-4, -6.5467842279709950e-4,
+ -7.3281477145293300e-4, -8.1247166091487090e-4,
+ -8.9362676824381250e-4, -9.7625651350435400e-4,
+ -1.0603359870796300e-3, -1.1458389497708370e-3,
+ -1.2327379076720450e-3, -1.3210041125919850e-3,
+ -1.4106074964587530e-3, -1.5015166759080980e-3,
+ -1.5936991188210680e-3, -1.6871211446584360e-3,
+ -1.7817477652804130e-3, -1.8775426862784720e-3,
+ -1.9744684954557180e-3, -2.0724866717198650e-3,
+ -2.1715575922482770e-3, -2.2716405301701940e-3,
+ -2.3726935964105480e-3, -2.4746737418493600e-3,
+ -2.5775368629845300e-3, -2.6812378156433060e-3,
+ -2.7857306109716460e-3, -2.8909684129992950e-3,
+ -2.9969032890820140e-3, -3.1034862132032660e-3,
+ -3.2106673881690480e-3, -3.3183962566563890e-3,
+ -3.4266214220855450e-3, -3.5352906520539890e-3,
+ -3.6443510330122110e-3, -3.7537489709635930e-3,
+ -3.8634300521859240e-3, -3.9733390588103910e-3,
+ -4.0834204508378470e-3, -4.1936183686073460e-3,
+ -4.3038762050876900e-3, -4.4141366059086620e-3,
+ -4.5243418977567100e-3, -4.6344341075783170e-3,
+ -4.7443549566589130e-3, -4.8540458565358850e-3,
+ -4.9634478250060780e-3, -5.0725014978718950e-3,
+ -5.1811474713480250e-3, -5.2893263173827950e-3,
+ -5.3969785783205650e-3, -5.5040447592375600e-3,
+ -5.6104651646665850e-3, -5.7161799140263450e-3,
+ -5.8211294443412250e-3, -5.9252545216101900e-3,
+ -6.0284959882028950e-3, -6.1307947602360250e-3,
+ -6.2320920224565700e-3, -6.3323292492425800e-3,
+ -6.4314484717364400e-3, -6.5293922762311450e-3,
+ -6.6261035015351700e-3, -6.7215252466922100e-3,
+ -6.8156013434509950e-3, -6.9082763630156450e-3,
+ -6.9994952920827200e-3, -7.0892035490577050e-3,
+ -7.1773476647806300e-3, -7.2638752839566550e-3,
+ -7.3487345159041400e-3, -7.4318739341000500e-3,
+ -7.5132432154309250e-3, -7.5927931627681400e-3,
+ -7.6704755623721500e-3, -7.7462431738117650e-3,
+ -7.8200496507836000e-3, -7.8918495587816850e-3,
+ -7.9615988430090790e-3, -8.0292548409052500e-3,
+ -8.0947760898363200e-3, -8.1581223027535600e-3,
+ -8.2192540249893810e-3, -8.2781326752680240e-3,
+ -8.3347217911436610e-3, -8.3889870206274740e-3,
+ -8.4408946925453690e-3, -8.4904118087845760e-3,
+ -8.5375073033623590e-3, -8.5821520672029750e-3,
+ -8.6243182341614300e-3, -8.6639791627160300e-3,
+ -8.7011097471794110e-3, -8.7356864659172800e-3,
+ -8.7676881309490440e-3, -8.7970958152554810e-3,
+ -8.8238905039462850e-3, -8.8480531477483150e-3,
+ -8.8695681885783190e-3, -8.8884235927356400e-3,
+ -8.9046080555685600e-3, -8.9181109318560050e-3,
+ -8.9289234995380550e-3, -8.9370390010903460e-3,
+ -8.9424522900292110e-3, -8.9451598223763610e-3,
+ /* Bank 4 */
+ 8.9451598223763610e-3, 8.9424522900292110e-3,
+ 8.9370390010903460e-3, 8.9289234995380550e-3,
+ 8.9181109318560050e-3, 8.9046080555685600e-3,
+ 8.8884235927356400e-3, 8.8695681885783190e-3,
+ 8.8480531477483150e-3, 8.8238905039462850e-3,
+ 8.7970958152554810e-3, 8.7676881309490440e-3,
+ 8.7356864659172800e-3, 8.7011097471794110e-3,
+ 8.6639791627160300e-3, 8.6243182341614300e-3,
+ 8.5821520672029750e-3, 8.5375073033623590e-3,
+ 8.4904118087845760e-3, 8.4408946925453690e-3,
+ 8.3889870206274740e-3, 8.3347217911436610e-3,
+ 8.2781326752680240e-3, 8.2192540249893810e-3,
+ 8.1581223027535600e-3, 8.0947760898363200e-3,
+ 8.0292548409052500e-3, 7.9615988430090790e-3,
+ 7.8918495587816850e-3, 7.8200496507836000e-3,
+ 7.7462431738117650e-3, 7.6704755623721500e-3,
+ 7.5927931627681400e-3, 7.5132432154309250e-3,
+ 7.4318739341000500e-3, 7.3487345159041400e-3,
+ 7.2638752839566550e-3, 7.1773476647806300e-3,
+ 7.0892035490577050e-3, 6.9994952920827200e-3,
+ 6.9082763630156450e-3, 6.8156013434509950e-3,
+ 6.7215252466922100e-3, 6.6261035015351700e-3,
+ 6.5293922762311450e-3, 6.4314484717364400e-3,
+ 6.3323292492425800e-3, 6.2320920224565700e-3,
+ 6.1307947602360250e-3, 6.0284959882028950e-3,
+ 5.9252545216101900e-3, 5.8211294443412250e-3,
+ 5.7161799140263450e-3, 5.6104651646665850e-3,
+ 5.5040447592375600e-3, 5.3969785783205650e-3,
+ 5.2893263173827950e-3, 5.1811474713480250e-3,
+ 5.0725014978718950e-3, 4.9634478250060780e-3,
+ 4.8540458565358850e-3, 4.7443549566589130e-3,
+ 4.6344341075783170e-3, 4.5243418977567100e-3,
+ 4.4141366059086620e-3, 4.3038762050876900e-3,
+ 4.1936183686073460e-3, 4.0834204508378470e-3,
+ 3.9733390588103910e-3, 3.8634300521859240e-3,
+ 3.7537489709635930e-3, 3.6443510330122110e-3,
+ 3.5352906520539890e-3, 3.4266214220855450e-3,
+ 3.3183962566563890e-3, 3.2106673881690480e-3,
+ 3.1034862132032660e-3, 2.9969032890820140e-3,
+ 2.8909684129992950e-3, 2.7857306109716460e-3,
+ 2.6812378156433060e-3, 2.5775368629845300e-3,
+ 2.4746737418493600e-3, 2.3726935964105480e-3,
+ 2.2716405301701940e-3, 2.1715575922482770e-3,
+ 2.0724866717198650e-3, 1.9744684954557180e-3,
+ 1.8775426862784720e-3, 1.7817477652804130e-3,
+ 1.6871211446584360e-3, 1.5936991188210680e-3,
+ 1.5015166759080980e-3, 1.4106074964587530e-3,
+ 1.3210041125919850e-3, 1.2327379076720450e-3,
+ 1.1458389497708370e-3, 1.0603359870796300e-3,
+ 9.7625651350435400e-4, 8.9362676824381250e-4,
+ 8.1247166091487090e-4, 7.3281477145293300e-4,
+ 6.5467842279709950e-4, 5.7808367853976800e-4,
+ 5.0305021853266900e-4, 4.2959633884346400e-4,
+ 3.5773907519488100e-4, 2.8749420455512610e-4,
+ 2.1887615668780720e-4, 1.5189801251884410e-4,
+ 8.6571556658577800e-5, 2.2907279717153710e-5,
+ -3.9085623279149610e-5, -9.9399252442146460e-5,
+ -1.5802699163104190e-4, -2.1496350652513040e-4,
+ -2.7020471361387040e-4, -3.2374777823389440e-4,
+ -3.7559110239316400e-4, -4.2573432329476060e-4,
+ -4.7417829303612970e-4, -5.2092507454409450e-4,
+ -5.6597787244591100e-4, -6.0934103180698750e-4,
+ -6.5102007948960100e-4, -6.9102172032639350e-4,
+ -7.2935371157849700e-4, -7.6602485902806300e-4,
+ /* Bank 5 */
+ 8.0104505655578600e-4, 8.3442528375666700e-4,
+ 8.6617751390929650e-4, 8.9631470926558100e-4,
+ 9.2485080945546600e-4, 9.5180072722007060e-4,
+ 9.7718026613602800e-4, 1.0010061160103870e-3,
+ 1.0232958338441730e-3, 1.0440678410743190e-3,
+ 1.0633413819325920e-3, 1.0811365181610850e-3,
+ 1.0974740543942100e-3, 1.1123755320313420e-3,
+ 1.1258631690530700e-3, 1.1379598570807350e-3,
+ 1.1486891568700730e-3, 1.1580752925519680e-3,
+ 1.1661430294353880e-3, 1.1729176690707690e-3,
+ 1.1784250628415020e-3, 1.1826916065321440e-3,
+ 1.1857441072376680e-3, 1.1876097809178440e-3,
+ 1.1883163316843900e-3, 1.1878919433902330e-3,
+ 1.1863650153060240e-3, 1.1837641581852870e-3,
+ 1.1801183720212010e-3, 1.1754570428998680e-3,
+ 1.1698096960154200e-3, 1.1632059885511800e-3,
+ 1.1556758000499310e-3, 1.1472492294891640e-3,
+ 1.1379564405661050e-3, 1.1278276550234160e-3,
+ 1.1168931605293980e-3, 1.1051833075734240e-3,
+ 1.0927284332850520e-3, 1.0795588568782010e-3,
+ 1.0657048556038330e-3, 1.0511966606168980e-3,
+ 1.0360643900964910e-3, 1.0203380430448350e-3,
+ 1.0040474297445790e-3, 9.8722217067251400e-4,
+ 9.6989174214394400e-4, 9.5208547141354700e-4,
+ 9.3383238324995840e-4, 9.1516119514986000e-4,
+ 8.9610036547340950e-4, 8.7667809201044900e-4,
+ 8.5692223230171550e-4, 8.3686029869896850e-4,
+ 8.1651942936660300e-4, 7.9592638676398950e-4,
+ 7.7510755325530950e-4, 7.5408892753413600e-4,
+ 7.3289605035434600e-4, 7.1155400216196750e-4,
+ 6.9008742526480550e-4, 6.6852052145861900e-4,
+ 6.4687697763330650e-4, 6.2517996394886800e-4,
+ 6.0345216810040500e-4, 5.8171579317559550e-4,
+ 5.5999247625413450e-4, 5.3830328700499900e-4,
+ 5.1666877822680600e-4, 4.9510898492628230e-4,
+ 4.7364335350426610e-4, 4.5229073958127750e-4,
+ 4.3106943097409840e-4, 4.0999714822829530e-4,
+ 3.8909103335715320e-4, 3.6836764760397900e-4,
+ 3.4784293347385130e-4, 3.2753221542219500e-4,
+ 3.0745025297166030e-4, 2.8761124019708440e-4,
+ 2.6802874127778880e-4, 2.4871569004884240e-4,
+ 2.2968444457655940e-4, 2.1094678833176480e-4,
+ 1.9251390142613000e-4, 1.7439635977956720e-4,
+ 1.5660414556657680e-4, 1.3914664880465400e-4,
+ 1.2203269185287530e-4, 1.0527052946041040e-4,
+ 8.8867825335203200e-5, 7.2831653374563650e-5,
+ 5.7168548169515050e-5, 4.1884506316022560e-5,
+ 2.6984964757674160e-5, 1.2474801400564880e-5,
+ -1.6416297019304470e-6, -1.5360496520469550e-5,
+ -2.8678484003389880e-5, -4.1592792755171040e-5,
+ -5.4101115008963200e-5, -6.6201632959158800e-5,
+ -7.7893006105444910e-5, -8.9174369623037550e-5,
+ -1.0004531116378850e-4, -1.1050586906665980e-4,
+ -1.2055651618705740e-4, -1.3019815804235450e-4,
+ -1.3943210818407590e-4, -1.4826008597798460e-4,
+ -1.5668419239382670e-4, -1.6470690840351980e-4,
+ -1.7233108395155490e-4, -1.7955993578371750e-4,
+ -1.8639701070854740e-4, -1.9284618337957900e-4,
+ -1.9891164424316180e-4, -2.0459789739171640e-4,
+ -2.0990972538755550e-4, -2.1485218733324290e-4,
+ -2.1943061159567880e-4, -2.2365059385031200e-4,
+ -2.2751796132972940e-4, -2.3103877007019660e-4,
+ -2.3421928008696620e-4, -2.3706595356421380e-4,
+ -2.3958543985834340e-4, -2.4178457457919800e-4,
+ /* Bank 6 */
+ 2.4367037437341020e-4, 2.4525003217524440e-4,
+ 2.4653081794176570e-4, 2.4752008219951220e-4,
+ 2.4822543333608940e-4, 2.4865471770248810e-4,
+ 2.4881540457247040e-4, 2.4871461830381660e-4,
+ 2.4836046092637280e-4, 2.4776199025177680e-4,
+ 2.4692741569938220e-4, 2.4586407616017000e-4,
+ 2.4457975717687980e-4, 2.4308272452941820e-4,
+ 2.4138114593372380e-4, 2.3948307023621970e-4,
+ 2.3739654799291240e-4, 2.3512963563507800e-4,
+ 2.3269036653525150e-4, 2.3008674810081220e-4,
+ 2.2732672676686290e-4, 2.2441818635854840e-4,
+ 2.2136894706917190e-4, 2.1818676491655660e-4,
+ 2.1487932080488700e-4, 2.1145421910491280e-4,
+ 2.0791896735659270e-4, 2.0428097498957360e-4,
+ 2.0054754547108610e-4, 1.9672587556804270e-4,
+ 1.9282304696531290e-4, 1.8884602526638050e-4,
+ 1.8480164638953740e-4, 1.8069661584612290e-4,
+ 1.7653750646560020e-4, 1.7233075773584680e-4,
+ 1.6808266356446820e-4, 1.6379937154642740e-4,
+ 1.5948687909058970e-4, 1.5515103314094370e-4,
+ 1.5079752791692290e-4, 1.4643190426323540e-4,
+ 1.4205953760578120e-4, 1.3768563787408340e-4,
+ 1.3331525983885840e-4, 1.2895330270761850e-4,
+ 1.2460449089034750e-4, 1.2027337376184880e-4,
+ 1.1596433966772030e-4, 1.1168161614264270e-4,
+ 1.0742926070674010e-4, 1.0321116057304920e-4,
+ 9.9031035415475500e-5, 9.4892437636254000e-5,
+ 9.0798755482139240e-5, 8.6753213062403400e-5,
+ 8.2758867628623800e-5, 7.8818609806320000e-5,
+ 7.4935171411178040e-5, 7.1111125753722860e-5,
+ 6.7348886525882700e-5, 6.3650708053788550e-5,
+ 6.0018691972791050e-5, 5.6454787620185350e-5,
+ 5.2960794000140600e-5, 4.9538360176954340e-5,
+ 4.6188991961724560e-5, 4.2914052387856640e-5,
+ 3.9714765485539260e-5, 3.6592216716540970e-5,
+ 3.3547358765259040e-5, 3.0581012081916960e-5,
+ 2.7693871041862060e-5, 2.4886504491416160e-5,
+ 2.2159361597292710e-5, 1.9512772389215240e-5,
+ 1.6946953848107710e-5, 1.4462010500550970e-5,
+ 1.2057941408635810e-5, 9.7346407524871100e-6,
+ 7.4919036559427900e-6, 5.3294268968052800e-6,
+ 3.2468187066945930e-6, 1.2435990827839660e-6,
+ -6.8080315386959900e-7, -2.5270494199802070e-6,
+ -4.2958677847708840e-6, -5.9880523825897000e-6,
+ -7.6044740757265500e-6, -9.1460801506922300e-6,
+ -1.0613876973541650e-5, -1.2008929083235120e-5,
+ -1.3332356590263080e-5, -1.4585334740507920e-5,
+ -1.5769086921577900e-5, -1.6884884022311310e-5,
+ -1.7934037335534700e-5, -1.8917898053528080e-5,
+ -1.9837853265502040e-5, -2.0695325418576370e-5,
+ -2.1491764461832140e-5, -2.2228647280994560e-5,
+ -2.2907473117403740e-5, -2.3529763128539150e-5,
+ -2.4097055300584120e-5, -2.4610903957661350e-5,
+ -2.5072874052447260e-5, -2.5484540698002960e-5,
+ -2.5847484577439320e-5, -2.6163291550639320e-5,
+ -2.6433548592482960e-5, -2.6659843389908530e-5,
+ -2.6843759539035120e-5, -2.6986876191054700e-5,
+ -2.7090765064735940e-5, -2.7156990105794550e-5,
+ -2.7187102980536760e-5, -2.7182642746157720e-5,
+ -2.7145133103663890e-5, -2.7076082153012070e-5,
+ -2.6976979753245170e-5, -2.6849297239997120e-5,
+ -2.6694483850464800e-5, -2.6513966535124460e-5,
+ -2.6309149390520640e-5, -2.6081413415833200e-5,
+ -2.5832111724562040e-5, -2.5562569399199020e-5,
+ /* Bank 7 */
+ 2.5274085082324960e-5, 2.4967930863542620e-5,
+ 2.4645348200903720e-5, 2.4307547722489910e-5,
+ 2.3955708939763280e-5, 2.3590980216497750e-5,
+ 2.3214478371918170e-5, 2.2827288605503470e-5,
+ 2.2430463239517170e-5, 2.2025021652894630e-5,
+ 2.1611950084231910e-5, 2.1192201630574280e-5,
+ 2.0766696417773940e-5, 2.0336321557464510e-5,
+ 1.9901930030141080e-5, 1.9464340744880170e-5,
+ 1.9024340970099240e-5, 1.8582686308483550e-5,
+ 1.8140097714618200e-5, 1.7697261563607500e-5,
+ 1.7254834143068570e-5, 1.6813441716539560e-5,
+ 1.6373677426466900e-5, 1.5936101341640500e-5,
+ 1.5501244597782600e-5, 1.5069609527679710e-5,
+ 1.4641668383496450e-5, 1.4217863365843780e-5,
+ 1.3798608540965960e-5, 1.3384289978242060e-5,
+ 1.2975266858030310e-5, 1.2571871574469220e-5,
+ 1.2174410889256530e-5, 1.1783166036693560e-5,
+ 1.1398393880881060e-5, 1.1020327046334650e-5,
+ 1.0649175634328590e-5, 1.0285127334608450e-5,
+ 9.9283481667264540e-6, 9.5789825988253100e-6,
+ 9.2371554195468400e-6, 8.9029718900122000e-6,
+ 8.5765192154768100e-6, 8.2578666429227760e-6,
+ 7.9470661364365490e-6, 7.6441525098592000e-6,
+ 7.3491456697144900e-6, 7.0620507545154100e-6,
+ 6.7828589565804950e-6, 6.5115476278604000e-6,
+ 6.2480817863072800e-6, 5.9924142424804800e-6,
+ 5.7444868785028750e-6, 5.5042307535458100e-6,
+ 5.2715671455405850e-6, 5.0464076705003400e-6,
+ 4.8286558658894680e-6, 4.6182073040543900e-6,
+ 4.4149505043312320e-6, 4.2187670209852250e-6,
+ 4.0295324657699800e-6, 3.8471166218015830e-6,
+ 3.6713849262294680e-6, 3.5021985520037540e-6,
+ 3.3394147240855820e-6, 3.1828867865974640e-6,
+ 3.0324653639203880e-6, 2.8879984579501380e-6,
+ 2.7493324266391140e-6, 2.6163120571644820e-6,
+ 2.4887811970856540e-6, 2.3665828120950560e-6,
+ 2.2495596253776460e-6, 2.1375541686662320e-6,
+ 2.0304092660990760e-6, 1.9279680902322050e-6,
+ 1.8300749104526120e-6, 1.7365751553971340e-6,
+ 1.6473160377545360e-6, 1.5621465913980060e-6,
+ 1.4809178634979940e-6, 1.4034829433780260e-6,
+ 1.3296974052300520e-6, 1.2594193438633260e-6,
+ 1.1925097184646100e-6, 1.1288323637155430e-6,
+ 1.0682538906146330e-6, 1.0106437128213760e-6,
+ 9.5587472540498280e-7, 9.0382333224895500e-7,
+ 8.5436937020293650e-7, 8.0739610368280600e-7,
+ 7.6279018172077200e-7, 7.2044165259013450e-7,
+ 6.8024432849991400e-7, 6.4209580087853050e-7,
+ 6.0589741192019800e-7, 5.7155423388793000e-7,
+ 5.3897464223335550e-7, 5.0807031294631050e-7,
+ 4.7875659112606760e-7, 4.5095249563698380e-7,
+ 4.2458045296159330e-7, 3.9956628121669190e-7,
+ 3.7583910465412180e-7, 3.5333134588843600e-7,
+ 3.3197864040473180e-7, 3.1171981968268900e-7,
+ 2.9249662541757600e-7, 2.7425370308549580e-7,
+ 2.5693874615777660e-7, 2.4050245877923400e-7,
+ 2.2489759047553620e-7, 2.1007899706006800e-7,
+ 1.9600594587757850e-7, 1.8264184311018150e-7,
+ 1.6994592926571220e-7, 1.5787424998123710e-7,
+ 1.4640931821191640e-7, 1.3555636137971380e-7,
+ 1.2523109645615350e-7, 1.1527363411865760e-7,
+ 1.0586659510721950e-7, 9.7483190494874640e-8,
+ 8.9326871281374790e-8, 7.9525034321375090e-8,
+ 7.0950903150874990e-8, 7.1279389866041690e-8,
+};
+
/*
* D.11 Look-up Table for Downmix Scale Factors
*
@@ -7534,7 +8128,7 @@ DECLARE_ALIGNED(16, const float, ff_dca_lfe_fir_128)[256] = {
* 2) [-29.750 to -15] with resolution of 0.250 dB
* 3) [-14.875 to 0] with resolution of 0.125 dB
*/
-const uint16_t ff_dca_dmixtable[242] = {
+const uint16_t ff_dca_dmixtable[FF_DCA_DMIXTABLE_SIZE] = {
0, 33, 35, 37, 39, 41, 44, 46,
49, 52, 55, 58, 62, 65, 69, 73,
78, 82, 87, 92, 98, 104, 110, 116,
@@ -7568,6 +8162,35 @@ const uint16_t ff_dca_dmixtable[242] = {
32300, 32768,
};
+const uint32_t ff_dca_inv_dmixtable[FF_DCA_INV_DMIXTABLE_SIZE] = {
+ 6553600, 6186997, 5840902, 5514167, 5205710, 4914507, 4639593, 4380059,
+ 4135042, 3903731, 3685360, 3479204, 3284581, 3100844, 2927386, 2763630,
+ 2609035, 2463088, 2325305, 2195230, 2072430, 2013631, 1956500, 1900990,
+ 1847055, 1794651, 1743733, 1694260, 1646190, 1599484, 1554103, 1510010,
+ 1467168, 1425542, 1385096, 1345798, 1307615, 1270515, 1234468, 1199444,
+ 1165413, 1132348, 1100221, 1069005, 1038676, 1009206, 980573, 952752,
+ 925721, 899456, 873937, 849141, 825049, 801641, 778897, 756798,
+ 735326, 714463, 694193, 674497, 655360, 636766, 618700, 601146,
+ 584090, 567518, 551417, 535772, 520571, 505801, 491451, 477507,
+ 463959, 450796, 438006, 425579, 413504, 401772, 390373, 379297,
+ 368536, 363270, 358080, 352964, 347920, 342949, 338049, 333219,
+ 328458, 323765, 319139, 314579, 310084, 305654, 301287, 296982,
+ 292739, 288556, 284433, 280369, 276363, 272414, 268522, 264685,
+ 260904, 257176, 253501, 249879, 246309, 242790, 239321, 235901,
+ 232531, 229208, 225933, 222705, 219523, 216386, 213295, 210247,
+ 207243, 204282, 201363, 198486, 195650, 192855, 190099, 187383,
+ 184706, 182066, 179465, 176901, 174373, 171882, 169426, 167005,
+ 164619, 162267, 159948, 157663, 155410, 153190, 151001, 148844,
+ 146717, 144621, 142554, 140517, 138510, 136531, 134580, 132657,
+ 130762, 128893, 127052, 125236, 123447, 121683, 119944, 118231,
+ 116541, 114876, 113235, 111617, 110022, 108450, 106901, 105373,
+ 103868, 102383, 100921, 99479, 98057, 96656, 95275, 93914,
+ 92682, 91249, 89946, 88660, 87394, 86145, 84914, 83701,
+ 82505, 81326, 80164, 79019, 77890, 76777, 75680, 74598,
+ 73533, 72482, 71446, 70425, 69419, 68427, 67450, 66486,
+ 65536,
+};
+
const float ff_dca_default_coeffs[10][6][2] = {
{ { 0.707107, 0.707107 }, { 0.000000, 0.000000 }, }, // A [LFE]
{ { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, { 0.000000, 0.000000 }, }, // A + B (dual mono) [LFE]
@@ -7581,6 +8204,11 @@ const float ff_dca_default_coeffs[10][6][2] = {
{ { 0.501187, 0.501187 }, { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, { 0.501187, 0.000000 }, { 0.000000, 0.501187 }, { 0.000000, 0.000000 }, }, // C + L + R + SL + SR [LFE]
};
+const int32_t ff_dca_sampling_freqs[16] = {
+ 8000, 16000, 32000, 64000, 128000, 22050, 44100, 88200,
+ 176400, 352800, 12000, 24000, 48000, 96000, 192000, 384000,
+};
+
/* downmix coeffs
*
* TABLE 9
diff --git a/libavcodec/dcadata.h b/libavcodec/dcadata.h
index b59b524..7a9d994 100644
--- a/libavcodec/dcadata.h
+++ b/libavcodec/dcadata.h
@@ -47,11 +47,19 @@ extern const float ff_dca_fir_32bands_nonperfect[512];
extern const float ff_dca_lfe_fir_64[256];
extern const float ff_dca_lfe_fir_128[256];
+extern const float ff_dca_lfe_xll_fir_64[256];
+extern const float ff_dca_fir_64bands[1024];
-extern const uint16_t ff_dca_dmixtable[242];
+#define FF_DCA_DMIXTABLE_SIZE 242
+#define FF_DCA_INV_DMIXTABLE_SIZE 201
+
+extern const uint16_t ff_dca_dmixtable[FF_DCA_DMIXTABLE_SIZE];
+extern const uint32_t ff_dca_inv_dmixtable[FF_DCA_INV_DMIXTABLE_SIZE];
extern const float ff_dca_default_coeffs[10][6][2];
+extern const int32_t ff_dca_sampling_freqs[16];
+
extern const int8_t ff_dca_lfe_index[16];
extern const int8_t ff_dca_channel_reorder_lfe[16][9];
diff --git a/libavcodec/dcadec.c b/libavcodec/dcadec.c
index 316affb..57198b0 100644
--- a/libavcodec/dcadec.c
+++ b/libavcodec/dcadec.c
@@ -4,6 +4,8 @@
* Copyright (C) 2004 Benjamin Zores
* Copyright (C) 2006 Benjamin Larsson
* Copyright (C) 2007 Konstantin Shishkov
+ * Copyright (C) 2012 Paul B Mahol
+ * Copyright (C) 2014 Niels Möller
*
* This file is part of Libav.
*
@@ -26,6 +28,7 @@
#include <stddef.h>
#include <stdio.h>
+#include "libavutil/attributes.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/float_dsp.h"
@@ -555,8 +558,83 @@ static void qmf_32_subbands(DCAContext *s, int chans,
samples_out, s->raXin, scale);
}
-static void lfe_interpolation_fir(DCAContext *s, int decimation_select,
- int num_deci_sample, float *samples_in,
+static QMF64_table *qmf64_precompute(void)
+{
+ unsigned i, j;
+ QMF64_table *table = av_malloc(sizeof(*table));
+ if (!table)
+ return NULL;
+
+ for (i = 0; i < 32; i++)
+ for (j = 0; j < 32; j++)
+ table->dct4_coeff[i][j] = cos((2 * i + 1) * (2 * j + 1) * M_PI / 128);
+ for (i = 0; i < 32; i++)
+ for (j = 0; j < 32; j++)
+ table->dct2_coeff[i][j] = cos((2 * i + 1) * j * M_PI / 64);
+
+ /* FIXME: Is the factor 0.125 = 1/8 right? */
+ for (i = 0; i < 32; i++)
+ table->rcos[i] = 0.125 / cos((2 * i + 1) * M_PI / 256);
+ for (i = 0; i < 32; i++)
+ table->rsin[i] = -0.125 / sin((2 * i + 1) * M_PI / 256);
+
+ return table;
+}
+
+/* FIXME: Totally unoptimized. Based on the reference code and
+ * http://multimedia.cx/mirror/dca-transform.pdf, with guessed tweaks
+ * for doubling the size. */
+static void qmf_64_subbands(DCAContext *s, int chans, float samples_in[64][8],
+ float *samples_out, float scale)
+{
+ float raXin[64];
+ float A[32], B[32];
+ float *raX = s->subband_fir_hist[chans];
+ float *raZ = s->subband_fir_noidea[chans];
+ unsigned i, j, k, subindex;
+
+ for (i = s->subband_activity[chans]; i < 64; i++)
+ raXin[i] = 0.0;
+ for (subindex = 0; subindex < 8; subindex++) {
+ for (i = 0; i < s->subband_activity[chans]; i++)
+ raXin[i] = samples_in[i][subindex];
+
+ for (k = 0; k < 32; k++) {
+ A[k] = 0.0;
+ for (i = 0; i < 32; i++)
+ A[k] += (raXin[2 * i] + raXin[2 * i + 1]) * s->qmf64_table->dct4_coeff[k][i];
+ }
+ for (k = 0; k < 32; k++) {
+ B[k] = raXin[0] * s->qmf64_table->dct2_coeff[k][0];
+ for (i = 1; i < 32; i++)
+ B[k] += (raXin[2 * i] + raXin[2 * i - 1]) * s->qmf64_table->dct2_coeff[k][i];
+ }
+ for (k = 0; k < 32; k++) {
+ raX[k] = s->qmf64_table->rcos[k] * (A[k] + B[k]);
+ raX[63 - k] = s->qmf64_table->rsin[k] * (A[k] - B[k]);
+ }
+
+ for (i = 0; i < 64; i++) {
+ float out = raZ[i];
+ for (j = 0; j < 1024; j += 128)
+ out += ff_dca_fir_64bands[j + i] * (raX[j + i] - raX[j + 63 - i]);
+ *samples_out++ = out * scale;
+ }
+
+ for (i = 0; i < 64; i++) {
+ float hist = 0.0;
+ for (j = 0; j < 1024; j += 128)
+ hist += ff_dca_fir_64bands[64 + j + i] * (-raX[i + j] - raX[j + 63 - i]);
+
+ raZ[i] = hist;
+ }
+
+ /* FIXME: Make buffer circular, to avoid this move. */
+ memmove(raX + 64, raX, (1024 - 64) * sizeof(*raX));
+ }
+}
+
+static void lfe_interpolation_fir(DCAContext *s, const float *samples_in,
float *samples_out)
{
/* samples_in: An array holding decimated samples.
@@ -572,15 +650,18 @@ static void lfe_interpolation_fir(DCAContext *s, int decimation_select,
int deciindex;
/* Select decimation filter */
- if (decimation_select == 1) {
+ if (s->lfe == 1) {
idx = 1;
prCoeff = ff_dca_lfe_fir_128;
} else {
- idx = 0;
- prCoeff = ff_dca_lfe_fir_64;
+ idx = 0;
+ if (s->exss_ext_mask & DCA_EXT_EXSS_XLL)
+ prCoeff = ff_dca_lfe_xll_fir_64;
+ else
+ prCoeff = ff_dca_lfe_fir_64;
}
/* Interpolation */
- for (deciindex = 0; deciindex < num_deci_sample; deciindex++) {
+ for (deciindex = 0; deciindex < 2 * s->lfe; deciindex++) {
s->dcadsp.lfe_fir[idx](samples_out, samples_in, prCoeff);
samples_in++;
samples_out += 2 * 32 * (1 + idx);
@@ -849,27 +930,56 @@ static int dca_subsubframe(DCAContext *s, int base_channel, int block_index)
return 0;
}
-static int dca_filter_channels(DCAContext *s, int block_index)
+static int dca_filter_channels(DCAContext *s, int block_index, int upsample)
{
float (*subband_samples)[DCA_SUBBANDS][8] = s->subband_samples[block_index];
int k;
- /* 32 subbands QMF */
- for (k = 0; k < s->prim_channels; k++) {
- if (s->channel_order_tab[k] >= 0)
- qmf_32_subbands(s, k, subband_samples[k],
- s->samples_chanptr[s->channel_order_tab[k]],
- M_SQRT1_2 / 32768.0);
+ if (upsample) {
+ if (!s->qmf64_table) {
+ s->qmf64_table = qmf64_precompute();
+ if (!s->qmf64_table)
+ return AVERROR(ENOMEM);
+ }
+
+ /* 64 subbands QMF */
+ for (k = 0; k < s->prim_channels; k++) {
+ if (s->channel_order_tab[k] >= 0)
+ qmf_64_subbands(s, k, subband_samples[k],
+ s->samples_chanptr[s->channel_order_tab[k]],
+ /* Upsampling needs a factor 2 here. */
+ M_SQRT2 / 32768.0);
+ }
+ } else {
+ /* 32 subbands QMF */
+ for (k = 0; k < s->prim_channels; k++) {
+ if (s->channel_order_tab[k] >= 0)
+ qmf_32_subbands(s, k, subband_samples[k],
+ s->samples_chanptr[s->channel_order_tab[k]],
+ M_SQRT1_2 / 32768.0);
+ }
}
/* Generate LFE samples for this subsubframe FIXME!!! */
if (s->lfe) {
- lfe_interpolation_fir(s, s->lfe, 2 * s->lfe,
+ float *samples = s->samples_chanptr[ff_dca_lfe_index[s->amode]];
+ lfe_interpolation_fir(s,
s->lfe_data + 2 * s->lfe * (block_index + 4),
- s->samples_chanptr[ff_dca_lfe_index[s->amode]]);
- /* Outputs 20bits pcm samples */
+ samples);
+ if (upsample) {
+ unsigned i;
+ /* Should apply the filter in Table 6-11 when upsampling. For
+ * now, just duplicate. */
+ for (i = 511; i > 0; i--) {
+ samples[2 * i] =
+ samples[2 * i + 1] = samples[i];
+ }
+ samples[1] = samples[0];
+ }
}
+ /* FIXME: This downmixing is probably broken with upsample.
+ * Probably totally broken also with XLL in general. */
/* Downmixing to Stereo */
if (s->prim_channels + !!s->lfe > 2 &&
s->avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) {
@@ -1050,8 +1160,10 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
DCAContext *s = avctx->priv_data;
int channels, full_channels;
int core_ss_end;
+ int upsample = 0;
- s->xch_present = 0;
+ s->exss_ext_mask = 0;
+ s->xch_present = 0;
s->dca_buffer_size = ff_dca_convert_bitstream(buf, buf_size, s->dca_buffer,
DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE);
@@ -1279,6 +1391,43 @@ FF_ENABLE_DEPRECATION_WARNINGS
/* get output buffer */
frame->nb_samples = 256 * (s->sample_blocks / 8);
+ if (s->exss_ext_mask & DCA_EXT_EXSS_XLL) {
+ int xll_nb_samples = s->xll_segments * s->xll_smpl_in_seg;
+ /* Check for invalid/unsupported conditions first */
+ if (s->xll_residual_channels > channels) {
+ av_log(s->avctx, AV_LOG_WARNING,
+ "DCA: too many residual channels (%d, core channels %d). Disabling XLL\n",
+ s->xll_residual_channels, channels);
+ s->exss_ext_mask &= ~DCA_EXT_EXSS_XLL;
+ } else if (xll_nb_samples != frame->nb_samples &&
+ 2 * frame->nb_samples != xll_nb_samples) {
+ av_log(s->avctx, AV_LOG_WARNING,
+ "DCA: unsupported upsampling (%d XLL samples, %d core samples). Disabling XLL\n",
+ xll_nb_samples, frame->nb_samples);
+ s->exss_ext_mask &= ~DCA_EXT_EXSS_XLL;
+ } else {
+ if (2 * frame->nb_samples == xll_nb_samples) {
+ av_log(s->avctx, AV_LOG_INFO,
+ "XLL: upsampling core channels by a factor of 2\n");
+ upsample = 1;
+
+ frame->nb_samples = xll_nb_samples;
+ // FIXME: Is it good enough to copy from the first channel set?
+ avctx->sample_rate = s->xll_chsets[0].sampling_frequency;
+ }
+ /* If downmixing to stereo, don't decode additional channels.
+ * FIXME: Using the xch_disable flag for this doesn't seem right. */
+ if (!s->xch_disable)
+ avctx->channels += s->xll_channels - s->xll_residual_channels;
+ }
+ }
+
+ /* FIXME: This is an ugly hack, to just revert to the default
+ * layout if we have additional channels. Need to convert the XLL
+ * channel masks to libav channel_layout mask. */
+ if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels)
+ avctx->channel_layout = 0;
+
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
@@ -1309,13 +1458,13 @@ FF_ENABLE_DEPRECATION_WARNINGS
/* filter to get final output */
for (i = 0; i < (s->sample_blocks / 8); i++) {
int ch;
-
+ unsigned block = upsample ? 512 : 256;
for (ch = 0; ch < channels; ch++)
- s->samples_chanptr[ch] = samples_flt[ch] + i * 256;
+ s->samples_chanptr[ch] = samples_flt[ch] + i * block;
for (; ch < full_channels; ch++)
- s->samples_chanptr[ch] = s->extra_channels[ch - channels] + i * 256;
+ s->samples_chanptr[ch] = s->extra_channels[ch - channels] + i * block;
- dca_filter_channels(s, i);
+ dca_filter_channels(s, i, upsample);
/* If this was marked as a DTS-ES stream we need to subtract back- */
/* channel from SL & SR to remove matrixed back-channel signal */
@@ -1333,6 +1482,11 @@ FF_ENABLE_DEPRECATION_WARNINGS
for (i = 0; i < 2 * s->lfe * 4; i++)
s->lfe_data[i] = s->lfe_data[i + lfe_samples];
+ if (s->exss_ext_mask & DCA_EXT_EXSS_XLL) {
+ ret = ff_dca_xll_decode_audio(s, frame);
+ if (ret < 0)
+ return ret;
+ }
/* AVMatrixEncoding
*
* DCA_STEREO_TOTAL (Lt/Rt) is equivalent to Dolby Surround */
@@ -1387,6 +1541,8 @@ static av_cold int dca_decode_end(AVCodecContext *avctx)
DCAContext *s = avctx->priv_data;
ff_mdct_end(&s->imdct);
av_freep(&s->extra_channels_buffer);
+ av_freep(&s->xll_sample_buf);
+ av_freep(&s->qmf64_table);
return 0;
}
@@ -1401,6 +1557,7 @@ static const AVProfile profiles[] = {
static const AVOption options[] = {
{ "disable_xch", "disable decoding of the XCh extension", offsetof(DCAContext, xch_disable), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM },
+ { "disable_xll", "disable decoding of the XLL extension", offsetof(DCAContext, xll_disable), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM },
{ NULL },
};
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 816d7ea..0d5408b 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -29,7 +29,7 @@
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 56
-#define LIBAVCODEC_VERSION_MINOR 18
+#define LIBAVCODEC_VERSION_MINOR 19
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
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