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2ba45a60 DM |
1 | /* |
2 | * DCA compatible decoder | |
3 | * Copyright (C) 2004 Gildas Bazin | |
4 | * Copyright (C) 2004 Benjamin Zores | |
5 | * Copyright (C) 2006 Benjamin Larsson | |
6 | * Copyright (C) 2007 Konstantin Shishkov | |
7 | * | |
8 | * This file is part of FFmpeg. | |
9 | * | |
10 | * FFmpeg is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU Lesser General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2.1 of the License, or (at your option) any later version. | |
14 | * | |
15 | * FFmpeg is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * Lesser General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU Lesser General Public | |
21 | * License along with FFmpeg; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
23 | */ | |
24 | ||
25 | #include <math.h> | |
26 | #include <stddef.h> | |
27 | #include <stdio.h> | |
28 | ||
29 | #include "libavutil/channel_layout.h" | |
30 | #include "libavutil/common.h" | |
31 | #include "libavutil/float_dsp.h" | |
32 | #include "libavutil/internal.h" | |
33 | #include "libavutil/intreadwrite.h" | |
34 | #include "libavutil/mathematics.h" | |
35 | #include "libavutil/opt.h" | |
36 | #include "libavutil/samplefmt.h" | |
f6fa7814 | 37 | |
2ba45a60 | 38 | #include "avcodec.h" |
2ba45a60 | 39 | #include "dca.h" |
f6fa7814 | 40 | #include "dcadata.h" |
2ba45a60 | 41 | #include "dcadsp.h" |
f6fa7814 DM |
42 | #include "dcahuff.h" |
43 | #include "fft.h" | |
2ba45a60 | 44 | #include "fmtconvert.h" |
f6fa7814 | 45 | #include "get_bits.h" |
2ba45a60 | 46 | #include "internal.h" |
f6fa7814 DM |
47 | #include "mathops.h" |
48 | #include "synth_filter.h" | |
2ba45a60 DM |
49 | |
50 | #if ARCH_ARM | |
51 | # include "arm/dca.h" | |
52 | #endif | |
53 | ||
54 | //#define TRACE | |
55 | ||
56 | #define DCA_PRIM_CHANNELS_MAX (7) | |
57 | #define DCA_ABITS_MAX (32) /* Should be 28 */ | |
58 | #define DCA_SUBSUBFRAMES_MAX (4) | |
59 | #define DCA_SUBFRAMES_MAX (16) | |
60 | #define DCA_BLOCKS_MAX (16) | |
61 | #define DCA_LFE_MAX (3) | |
62 | #define DCA_CHSETS_MAX (4) | |
63 | #define DCA_CHSET_CHANS_MAX (8) | |
64 | ||
65 | enum DCAMode { | |
66 | DCA_MONO = 0, | |
67 | DCA_CHANNEL, | |
68 | DCA_STEREO, | |
69 | DCA_STEREO_SUMDIFF, | |
70 | DCA_STEREO_TOTAL, | |
71 | DCA_3F, | |
72 | DCA_2F1R, | |
73 | DCA_3F1R, | |
74 | DCA_2F2R, | |
75 | DCA_3F2R, | |
76 | DCA_4F2R | |
77 | }; | |
78 | ||
79 | /* these are unconfirmed but should be mostly correct */ | |
80 | enum DCAExSSSpeakerMask { | |
81 | DCA_EXSS_FRONT_CENTER = 0x0001, | |
82 | DCA_EXSS_FRONT_LEFT_RIGHT = 0x0002, | |
83 | DCA_EXSS_SIDE_REAR_LEFT_RIGHT = 0x0004, | |
84 | DCA_EXSS_LFE = 0x0008, | |
85 | DCA_EXSS_REAR_CENTER = 0x0010, | |
86 | DCA_EXSS_FRONT_HIGH_LEFT_RIGHT = 0x0020, | |
87 | DCA_EXSS_REAR_LEFT_RIGHT = 0x0040, | |
88 | DCA_EXSS_FRONT_HIGH_CENTER = 0x0080, | |
89 | DCA_EXSS_OVERHEAD = 0x0100, | |
90 | DCA_EXSS_CENTER_LEFT_RIGHT = 0x0200, | |
91 | DCA_EXSS_WIDE_LEFT_RIGHT = 0x0400, | |
92 | DCA_EXSS_SIDE_LEFT_RIGHT = 0x0800, | |
93 | DCA_EXSS_LFE2 = 0x1000, | |
94 | DCA_EXSS_SIDE_HIGH_LEFT_RIGHT = 0x2000, | |
95 | DCA_EXSS_REAR_HIGH_CENTER = 0x4000, | |
96 | DCA_EXSS_REAR_HIGH_LEFT_RIGHT = 0x8000, | |
97 | }; | |
98 | ||
99 | enum DCAXxchSpeakerMask { | |
100 | DCA_XXCH_FRONT_CENTER = 0x0000001, | |
101 | DCA_XXCH_FRONT_LEFT = 0x0000002, | |
102 | DCA_XXCH_FRONT_RIGHT = 0x0000004, | |
103 | DCA_XXCH_SIDE_REAR_LEFT = 0x0000008, | |
104 | DCA_XXCH_SIDE_REAR_RIGHT = 0x0000010, | |
105 | DCA_XXCH_LFE1 = 0x0000020, | |
106 | DCA_XXCH_REAR_CENTER = 0x0000040, | |
107 | DCA_XXCH_SURROUND_REAR_LEFT = 0x0000080, | |
108 | DCA_XXCH_SURROUND_REAR_RIGHT = 0x0000100, | |
109 | DCA_XXCH_SIDE_SURROUND_LEFT = 0x0000200, | |
110 | DCA_XXCH_SIDE_SURROUND_RIGHT = 0x0000400, | |
111 | DCA_XXCH_FRONT_CENTER_LEFT = 0x0000800, | |
112 | DCA_XXCH_FRONT_CENTER_RIGHT = 0x0001000, | |
113 | DCA_XXCH_FRONT_HIGH_LEFT = 0x0002000, | |
114 | DCA_XXCH_FRONT_HIGH_CENTER = 0x0004000, | |
115 | DCA_XXCH_FRONT_HIGH_RIGHT = 0x0008000, | |
116 | DCA_XXCH_LFE2 = 0x0010000, | |
117 | DCA_XXCH_SIDE_FRONT_LEFT = 0x0020000, | |
118 | DCA_XXCH_SIDE_FRONT_RIGHT = 0x0040000, | |
119 | DCA_XXCH_OVERHEAD = 0x0080000, | |
120 | DCA_XXCH_SIDE_HIGH_LEFT = 0x0100000, | |
121 | DCA_XXCH_SIDE_HIGH_RIGHT = 0x0200000, | |
122 | DCA_XXCH_REAR_HIGH_CENTER = 0x0400000, | |
123 | DCA_XXCH_REAR_HIGH_LEFT = 0x0800000, | |
124 | DCA_XXCH_REAR_HIGH_RIGHT = 0x1000000, | |
125 | DCA_XXCH_REAR_LOW_CENTER = 0x2000000, | |
126 | DCA_XXCH_REAR_LOW_LEFT = 0x4000000, | |
127 | DCA_XXCH_REAR_LOW_RIGHT = 0x8000000, | |
128 | }; | |
129 | ||
130 | static const uint32_t map_xxch_to_native[28] = { | |
131 | AV_CH_FRONT_CENTER, | |
132 | AV_CH_FRONT_LEFT, | |
133 | AV_CH_FRONT_RIGHT, | |
134 | AV_CH_SIDE_LEFT, | |
135 | AV_CH_SIDE_RIGHT, | |
136 | AV_CH_LOW_FREQUENCY, | |
137 | AV_CH_BACK_CENTER, | |
138 | AV_CH_BACK_LEFT, | |
139 | AV_CH_BACK_RIGHT, | |
140 | AV_CH_SIDE_LEFT, /* side surround left -- dup sur side L */ | |
141 | AV_CH_SIDE_RIGHT, /* side surround right -- dup sur side R */ | |
142 | AV_CH_FRONT_LEFT_OF_CENTER, | |
143 | AV_CH_FRONT_RIGHT_OF_CENTER, | |
144 | AV_CH_TOP_FRONT_LEFT, | |
145 | AV_CH_TOP_FRONT_CENTER, | |
146 | AV_CH_TOP_FRONT_RIGHT, | |
147 | AV_CH_LOW_FREQUENCY, /* lfe2 -- duplicate lfe1 position */ | |
148 | AV_CH_FRONT_LEFT_OF_CENTER, /* side front left -- dup front cntr L */ | |
149 | AV_CH_FRONT_RIGHT_OF_CENTER,/* side front right -- dup front cntr R */ | |
150 | AV_CH_TOP_CENTER, /* overhead */ | |
151 | AV_CH_TOP_FRONT_LEFT, /* side high left -- dup */ | |
152 | AV_CH_TOP_FRONT_RIGHT, /* side high right -- dup */ | |
153 | AV_CH_TOP_BACK_CENTER, | |
154 | AV_CH_TOP_BACK_LEFT, | |
155 | AV_CH_TOP_BACK_RIGHT, | |
156 | AV_CH_BACK_CENTER, /* rear low center -- dup */ | |
157 | AV_CH_BACK_LEFT, /* rear low left -- dup */ | |
158 | AV_CH_BACK_RIGHT /* read low right -- dup */ | |
159 | }; | |
160 | ||
161 | enum DCAExtensionMask { | |
162 | DCA_EXT_CORE = 0x001, ///< core in core substream | |
163 | DCA_EXT_XXCH = 0x002, ///< XXCh channels extension in core substream | |
164 | DCA_EXT_X96 = 0x004, ///< 96/24 extension in core substream | |
165 | DCA_EXT_XCH = 0x008, ///< XCh channel extension in core substream | |
166 | DCA_EXT_EXSS_CORE = 0x010, ///< core in ExSS (extension substream) | |
167 | DCA_EXT_EXSS_XBR = 0x020, ///< extended bitrate extension in ExSS | |
168 | DCA_EXT_EXSS_XXCH = 0x040, ///< XXCh channels extension in ExSS | |
169 | DCA_EXT_EXSS_X96 = 0x080, ///< 96/24 extension in ExSS | |
170 | DCA_EXT_EXSS_LBR = 0x100, ///< low bitrate component in ExSS | |
171 | DCA_EXT_EXSS_XLL = 0x200, ///< lossless extension in ExSS | |
172 | }; | |
173 | ||
174 | /* -1 are reserved or unknown */ | |
175 | static const int dca_ext_audio_descr_mask[] = { | |
176 | DCA_EXT_XCH, | |
177 | -1, | |
178 | DCA_EXT_X96, | |
179 | DCA_EXT_XCH | DCA_EXT_X96, | |
180 | -1, | |
181 | -1, | |
182 | DCA_EXT_XXCH, | |
183 | -1, | |
184 | }; | |
185 | ||
186 | /* extensions that reside in core substream */ | |
187 | #define DCA_CORE_EXTS (DCA_EXT_XCH | DCA_EXT_XXCH | DCA_EXT_X96) | |
188 | ||
189 | /* Tables for mapping dts channel configurations to libavcodec multichannel api. | |
190 | * Some compromises have been made for special configurations. Most configurations | |
191 | * are never used so complete accuracy is not needed. | |
192 | * | |
193 | * L = left, R = right, C = center, S = surround, F = front, R = rear, T = total, OV = overhead. | |
194 | * S -> side, when both rear and back are configured move one of them to the side channel | |
195 | * OV -> center back | |
196 | * All 2 channel configurations -> AV_CH_LAYOUT_STEREO | |
197 | */ | |
198 | static const uint64_t dca_core_channel_layout[] = { | |
199 | AV_CH_FRONT_CENTER, ///< 1, A | |
200 | AV_CH_LAYOUT_STEREO, ///< 2, A + B (dual mono) | |
201 | AV_CH_LAYOUT_STEREO, ///< 2, L + R (stereo) | |
202 | AV_CH_LAYOUT_STEREO, ///< 2, (L + R) + (L - R) (sum-difference) | |
203 | AV_CH_LAYOUT_STEREO, ///< 2, LT + RT (left and right total) | |
204 | AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER, ///< 3, C + L + R | |
205 | AV_CH_LAYOUT_STEREO | AV_CH_BACK_CENTER, ///< 3, L + R + S | |
206 | AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER | AV_CH_BACK_CENTER, ///< 4, C + L + R + S | |
207 | AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT, ///< 4, L + R + SL + SR | |
208 | ||
209 | AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER | AV_CH_SIDE_LEFT | | |
210 | AV_CH_SIDE_RIGHT, ///< 5, C + L + R + SL + SR | |
211 | ||
212 | AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT | | |
213 | AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER, ///< 6, CL + CR + L + R + SL + SR | |
214 | ||
215 | AV_CH_LAYOUT_STEREO | AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT | | |
216 | AV_CH_FRONT_CENTER | AV_CH_BACK_CENTER, ///< 6, C + L + R + LR + RR + OV | |
217 | ||
218 | AV_CH_FRONT_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER | | |
219 | AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_BACK_CENTER | | |
220 | AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT, ///< 6, CF + CR + LF + RF + LR + RR | |
221 | ||
222 | AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_CENTER | | |
223 | AV_CH_FRONT_RIGHT_OF_CENTER | AV_CH_LAYOUT_STEREO | | |
224 | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT, ///< 7, CL + C + CR + L + R + SL + SR | |
225 | ||
226 | AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER | | |
227 | AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT | | |
228 | AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT, ///< 8, CL + CR + L + R + SL1 + SL2 + SR1 + SR2 | |
229 | ||
230 | AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_CENTER | | |
231 | AV_CH_FRONT_RIGHT_OF_CENTER | AV_CH_LAYOUT_STEREO | | |
232 | AV_CH_SIDE_LEFT | AV_CH_BACK_CENTER | AV_CH_SIDE_RIGHT, ///< 8, CL + C + CR + L + R + SL + S + SR | |
233 | }; | |
234 | ||
235 | static const int8_t dca_lfe_index[] = { | |
236 | 1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 1, 3, 2, 3 | |
237 | }; | |
238 | ||
239 | static const int8_t dca_channel_reorder_lfe[][9] = { | |
f6fa7814 DM |
240 | { 0, -1, -1, -1, -1, -1, -1, -1, -1 }, |
241 | { 0, 1, -1, -1, -1, -1, -1, -1, -1 }, | |
242 | { 0, 1, -1, -1, -1, -1, -1, -1, -1 }, | |
243 | { 0, 1, -1, -1, -1, -1, -1, -1, -1 }, | |
244 | { 0, 1, -1, -1, -1, -1, -1, -1, -1 }, | |
245 | { 2, 0, 1, -1, -1, -1, -1, -1, -1 }, | |
246 | { 0, 1, 3, -1, -1, -1, -1, -1, -1 }, | |
247 | { 2, 0, 1, 4, -1, -1, -1, -1, -1 }, | |
248 | { 0, 1, 3, 4, -1, -1, -1, -1, -1 }, | |
249 | { 2, 0, 1, 4, 5, -1, -1, -1, -1 }, | |
250 | { 3, 4, 0, 1, 5, 6, -1, -1, -1 }, | |
251 | { 2, 0, 1, 4, 5, 6, -1, -1, -1 }, | |
252 | { 0, 6, 4, 5, 2, 3, -1, -1, -1 }, | |
253 | { 4, 2, 5, 0, 1, 6, 7, -1, -1 }, | |
254 | { 5, 6, 0, 1, 7, 3, 8, 4, -1 }, | |
255 | { 4, 2, 5, 0, 1, 6, 8, 7, -1 }, | |
2ba45a60 DM |
256 | }; |
257 | ||
258 | static const int8_t dca_channel_reorder_lfe_xch[][9] = { | |
f6fa7814 DM |
259 | { 0, 2, -1, -1, -1, -1, -1, -1, -1 }, |
260 | { 0, 1, 3, -1, -1, -1, -1, -1, -1 }, | |
261 | { 0, 1, 3, -1, -1, -1, -1, -1, -1 }, | |
262 | { 0, 1, 3, -1, -1, -1, -1, -1, -1 }, | |
263 | { 0, 1, 3, -1, -1, -1, -1, -1, -1 }, | |
264 | { 2, 0, 1, 4, -1, -1, -1, -1, -1 }, | |
265 | { 0, 1, 3, 4, -1, -1, -1, -1, -1 }, | |
266 | { 2, 0, 1, 4, 5, -1, -1, -1, -1 }, | |
267 | { 0, 1, 4, 5, 3, -1, -1, -1, -1 }, | |
268 | { 2, 0, 1, 5, 6, 4, -1, -1, -1 }, | |
269 | { 3, 4, 0, 1, 6, 7, 5, -1, -1 }, | |
270 | { 2, 0, 1, 4, 5, 6, 7, -1, -1 }, | |
271 | { 0, 6, 4, 5, 2, 3, 7, -1, -1 }, | |
272 | { 4, 2, 5, 0, 1, 7, 8, 6, -1 }, | |
273 | { 5, 6, 0, 1, 8, 3, 9, 4, 7 }, | |
274 | { 4, 2, 5, 0, 1, 6, 9, 8, 7 }, | |
2ba45a60 DM |
275 | }; |
276 | ||
277 | static const int8_t dca_channel_reorder_nolfe[][9] = { | |
f6fa7814 DM |
278 | { 0, -1, -1, -1, -1, -1, -1, -1, -1 }, |
279 | { 0, 1, -1, -1, -1, -1, -1, -1, -1 }, | |
280 | { 0, 1, -1, -1, -1, -1, -1, -1, -1 }, | |
281 | { 0, 1, -1, -1, -1, -1, -1, -1, -1 }, | |
282 | { 0, 1, -1, -1, -1, -1, -1, -1, -1 }, | |
283 | { 2, 0, 1, -1, -1, -1, -1, -1, -1 }, | |
284 | { 0, 1, 2, -1, -1, -1, -1, -1, -1 }, | |
285 | { 2, 0, 1, 3, -1, -1, -1, -1, -1 }, | |
286 | { 0, 1, 2, 3, -1, -1, -1, -1, -1 }, | |
287 | { 2, 0, 1, 3, 4, -1, -1, -1, -1 }, | |
288 | { 2, 3, 0, 1, 4, 5, -1, -1, -1 }, | |
289 | { 2, 0, 1, 3, 4, 5, -1, -1, -1 }, | |
290 | { 0, 5, 3, 4, 1, 2, -1, -1, -1 }, | |
291 | { 3, 2, 4, 0, 1, 5, 6, -1, -1 }, | |
292 | { 4, 5, 0, 1, 6, 2, 7, 3, -1 }, | |
293 | { 3, 2, 4, 0, 1, 5, 7, 6, -1 }, | |
2ba45a60 DM |
294 | }; |
295 | ||
296 | static const int8_t dca_channel_reorder_nolfe_xch[][9] = { | |
f6fa7814 DM |
297 | { 0, 1, -1, -1, -1, -1, -1, -1, -1 }, |
298 | { 0, 1, 2, -1, -1, -1, -1, -1, -1 }, | |
299 | { 0, 1, 2, -1, -1, -1, -1, -1, -1 }, | |
300 | { 0, 1, 2, -1, -1, -1, -1, -1, -1 }, | |
301 | { 0, 1, 2, -1, -1, -1, -1, -1, -1 }, | |
302 | { 2, 0, 1, 3, -1, -1, -1, -1, -1 }, | |
303 | { 0, 1, 2, 3, -1, -1, -1, -1, -1 }, | |
304 | { 2, 0, 1, 3, 4, -1, -1, -1, -1 }, | |
305 | { 0, 1, 3, 4, 2, -1, -1, -1, -1 }, | |
306 | { 2, 0, 1, 4, 5, 3, -1, -1, -1 }, | |
307 | { 2, 3, 0, 1, 5, 6, 4, -1, -1 }, | |
308 | { 2, 0, 1, 3, 4, 5, 6, -1, -1 }, | |
309 | { 0, 5, 3, 4, 1, 2, 6, -1, -1 }, | |
310 | { 3, 2, 4, 0, 1, 6, 7, 5, -1 }, | |
311 | { 4, 5, 0, 1, 7, 2, 8, 3, 6 }, | |
312 | { 3, 2, 4, 0, 1, 5, 8, 7, 6 }, | |
2ba45a60 DM |
313 | }; |
314 | ||
315 | #define DCA_DOLBY 101 /* FIXME */ | |
316 | ||
317 | #define DCA_CHANNEL_BITS 6 | |
318 | #define DCA_CHANNEL_MASK 0x3F | |
319 | ||
320 | #define DCA_LFE 0x80 | |
321 | ||
322 | #define HEADER_SIZE 14 | |
323 | ||
324 | #define DCA_MAX_FRAME_SIZE 16384 | |
325 | #define DCA_MAX_EXSS_HEADER_SIZE 4096 | |
326 | ||
327 | #define DCA_BUFFER_PADDING_SIZE 1024 | |
328 | ||
329 | #define DCA_NSYNCAUX 0x9A1105A0 | |
330 | ||
331 | /** Bit allocation */ | |
332 | typedef struct { | |
333 | int offset; ///< code values offset | |
334 | int maxbits[8]; ///< max bits in VLC | |
335 | int wrap; ///< wrap for get_vlc2() | |
336 | VLC vlc[8]; ///< actual codes | |
337 | } BitAlloc; | |
338 | ||
339 | static BitAlloc dca_bitalloc_index; ///< indexes for samples VLC select | |
340 | static BitAlloc dca_tmode; ///< transition mode VLCs | |
341 | static BitAlloc dca_scalefactor; ///< scalefactor VLCs | |
342 | static BitAlloc dca_smpl_bitalloc[11]; ///< samples VLCs | |
343 | ||
344 | static av_always_inline int get_bitalloc(GetBitContext *gb, BitAlloc *ba, | |
345 | int idx) | |
346 | { | |
347 | return get_vlc2(gb, ba->vlc[idx].table, ba->vlc[idx].bits, ba->wrap) + | |
348 | ba->offset; | |
349 | } | |
350 | ||
351 | typedef struct { | |
352 | const AVClass *class; ///< class for AVOptions | |
353 | AVCodecContext *avctx; | |
354 | /* Frame header */ | |
355 | int frame_type; ///< type of the current frame | |
356 | int samples_deficit; ///< deficit sample count | |
357 | int crc_present; ///< crc is present in the bitstream | |
358 | int sample_blocks; ///< number of PCM sample blocks | |
359 | int frame_size; ///< primary frame byte size | |
360 | int amode; ///< audio channels arrangement | |
361 | int sample_rate; ///< audio sampling rate | |
362 | int bit_rate; ///< transmission bit rate | |
363 | int bit_rate_index; ///< transmission bit rate index | |
364 | ||
365 | int dynrange; ///< embedded dynamic range flag | |
366 | int timestamp; ///< embedded time stamp flag | |
367 | int aux_data; ///< auxiliary data flag | |
368 | int hdcd; ///< source material is mastered in HDCD | |
369 | int ext_descr; ///< extension audio descriptor flag | |
370 | int ext_coding; ///< extended coding flag | |
371 | int aspf; ///< audio sync word insertion flag | |
372 | int lfe; ///< low frequency effects flag | |
373 | int predictor_history; ///< predictor history flag | |
374 | int header_crc; ///< header crc check bytes | |
375 | int multirate_inter; ///< multirate interpolator switch | |
376 | int version; ///< encoder software revision | |
377 | int copy_history; ///< copy history | |
378 | int source_pcm_res; ///< source pcm resolution | |
379 | int front_sum; ///< front sum/difference flag | |
380 | int surround_sum; ///< surround sum/difference flag | |
381 | int dialog_norm; ///< dialog normalisation parameter | |
382 | ||
383 | /* Primary audio coding header */ | |
384 | int subframes; ///< number of subframes | |
385 | int total_channels; ///< number of channels including extensions | |
386 | int prim_channels; ///< number of primary audio channels | |
387 | int subband_activity[DCA_PRIM_CHANNELS_MAX]; ///< subband activity count | |
388 | int vq_start_subband[DCA_PRIM_CHANNELS_MAX]; ///< high frequency vq start subband | |
389 | int joint_intensity[DCA_PRIM_CHANNELS_MAX]; ///< joint intensity coding index | |
390 | int transient_huffman[DCA_PRIM_CHANNELS_MAX]; ///< transient mode code book | |
391 | int scalefactor_huffman[DCA_PRIM_CHANNELS_MAX]; ///< scale factor code book | |
392 | int bitalloc_huffman[DCA_PRIM_CHANNELS_MAX]; ///< bit allocation quantizer select | |
393 | int quant_index_huffman[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]; ///< quantization index codebook select | |
394 | float scalefactor_adj[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]; ///< scale factor adjustment | |
395 | ||
396 | /* Primary audio coding side information */ | |
397 | int subsubframes[DCA_SUBFRAMES_MAX]; ///< number of subsubframes | |
398 | int partial_samples[DCA_SUBFRAMES_MAX]; ///< partial subsubframe samples count | |
399 | int prediction_mode[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< prediction mode (ADPCM used or not) | |
400 | int prediction_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< prediction VQ coefs | |
401 | int bitalloc[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< bit allocation index | |
402 | int transition_mode[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< transition mode (transients) | |
403 | int32_t scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][2];///< scale factors (2 if transient) | |
404 | int joint_huff[DCA_PRIM_CHANNELS_MAX]; ///< joint subband scale factors codebook | |
405 | int joint_scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< joint subband scale factors | |
406 | float downmix_coef[DCA_PRIM_CHANNELS_MAX + 1][2]; ///< stereo downmix coefficients | |
407 | int dynrange_coef; ///< dynamic range coefficient | |
408 | ||
409 | /* Core substream's embedded downmix coefficients (cf. ETSI TS 102 114 V1.4.1) | |
410 | * Input: primary audio channels (incl. LFE if present) | |
411 | * Output: downmix audio channels (up to 4, no LFE) */ | |
412 | uint8_t core_downmix; ///< embedded downmix coefficients available | |
413 | uint8_t core_downmix_amode; ///< audio channel arrangement of embedded downmix | |
414 | uint16_t core_downmix_codes[DCA_PRIM_CHANNELS_MAX + 1][4]; ///< embedded downmix coefficients (9-bit codes) | |
415 | ||
416 | int32_t high_freq_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< VQ encoded high frequency subbands | |
417 | ||
418 | float lfe_data[2 * DCA_LFE_MAX * (DCA_BLOCKS_MAX + 4)]; ///< Low frequency effect data | |
419 | int lfe_scale_factor; | |
420 | ||
421 | /* Subband samples history (for ADPCM) */ | |
422 | DECLARE_ALIGNED(16, float, subband_samples_hist)[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][4]; | |
423 | DECLARE_ALIGNED(32, float, subband_fir_hist)[DCA_PRIM_CHANNELS_MAX][512]; | |
424 | DECLARE_ALIGNED(32, float, subband_fir_noidea)[DCA_PRIM_CHANNELS_MAX][32]; | |
425 | int hist_index[DCA_PRIM_CHANNELS_MAX]; | |
426 | DECLARE_ALIGNED(32, float, raXin)[32]; | |
427 | ||
428 | int output; ///< type of output | |
429 | ||
430 | DECLARE_ALIGNED(32, float, subband_samples)[DCA_BLOCKS_MAX][DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][8]; | |
431 | float *samples_chanptr[DCA_PRIM_CHANNELS_MAX + 1]; | |
432 | float *extra_channels[DCA_PRIM_CHANNELS_MAX + 1]; | |
433 | uint8_t *extra_channels_buffer; | |
434 | unsigned int extra_channels_buffer_size; | |
435 | ||
436 | uint8_t dca_buffer[DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE + DCA_BUFFER_PADDING_SIZE]; | |
437 | int dca_buffer_size; ///< how much data is in the dca_buffer | |
438 | ||
439 | const int8_t *channel_order_tab; ///< channel reordering table, lfe and non lfe | |
440 | GetBitContext gb; | |
441 | /* Current position in DCA frame */ | |
442 | int current_subframe; | |
443 | int current_subsubframe; | |
444 | ||
445 | int core_ext_mask; ///< present extensions in the core substream | |
446 | ||
447 | /* XCh extension information */ | |
448 | int xch_present; ///< XCh extension present and valid | |
449 | int xch_base_channel; ///< index of first (only) channel containing XCH data | |
450 | int xch_disable; ///< whether the XCh extension should be decoded or not | |
451 | ||
452 | /* XXCH extension information */ | |
453 | int xxch_chset; | |
454 | int xxch_nbits_spk_mask; | |
455 | uint32_t xxch_core_spkmask; | |
456 | uint32_t xxch_spk_masks[4]; /* speaker masks, last element is core mask */ | |
457 | int xxch_chset_nch[4]; | |
458 | float xxch_dmix_sf[DCA_CHSETS_MAX]; | |
459 | ||
460 | uint32_t xxch_dmix_embedded; /* lower layer has mix pre-embedded, per chset */ | |
461 | float xxch_dmix_coeff[DCA_PRIM_CHANNELS_MAX][32]; /* worst case sizing */ | |
462 | ||
463 | int8_t xxch_order_tab[32]; | |
464 | int8_t lfe_index; | |
465 | ||
466 | /* ExSS header parser */ | |
467 | int static_fields; ///< static fields present | |
468 | int mix_metadata; ///< mixing metadata present | |
469 | int num_mix_configs; ///< number of mix out configurations | |
470 | int mix_config_num_ch[4]; ///< number of channels in each mix out configuration | |
471 | ||
472 | int profile; | |
473 | ||
474 | int debug_flag; ///< used for suppressing repeated error messages output | |
f6fa7814 | 475 | AVFloatDSPContext *fdsp; |
2ba45a60 DM |
476 | FFTContext imdct; |
477 | SynthFilterContext synth; | |
478 | DCADSPContext dcadsp; | |
479 | FmtConvertContext fmt_conv; | |
480 | } DCAContext; | |
481 | ||
482 | static float dca_dmix_code(unsigned code); | |
483 | ||
484 | static const uint16_t dca_vlc_offs[] = { | |
485 | 0, 512, 640, 768, 1282, 1794, 2436, 3080, 3770, 4454, 5364, | |
486 | 5372, 5380, 5388, 5392, 5396, 5412, 5420, 5428, 5460, 5492, 5508, | |
487 | 5572, 5604, 5668, 5796, 5860, 5892, 6412, 6668, 6796, 7308, 7564, | |
488 | 7820, 8076, 8620, 9132, 9388, 9910, 10166, 10680, 11196, 11726, 12240, | |
489 | 12752, 13298, 13810, 14326, 14840, 15500, 16022, 16540, 17158, 17678, 18264, | |
490 | 18796, 19352, 19926, 20468, 21472, 22398, 23014, 23622, | |
491 | }; | |
492 | ||
493 | static av_cold void dca_init_vlcs(void) | |
494 | { | |
495 | static int vlcs_initialized = 0; | |
496 | int i, j, c = 14; | |
497 | static VLC_TYPE dca_table[23622][2]; | |
498 | ||
499 | if (vlcs_initialized) | |
500 | return; | |
501 | ||
502 | dca_bitalloc_index.offset = 1; | |
f6fa7814 | 503 | dca_bitalloc_index.wrap = 2; |
2ba45a60 | 504 | for (i = 0; i < 5; i++) { |
f6fa7814 | 505 | dca_bitalloc_index.vlc[i].table = &dca_table[dca_vlc_offs[i]]; |
2ba45a60 DM |
506 | dca_bitalloc_index.vlc[i].table_allocated = dca_vlc_offs[i + 1] - dca_vlc_offs[i]; |
507 | init_vlc(&dca_bitalloc_index.vlc[i], bitalloc_12_vlc_bits[i], 12, | |
508 | bitalloc_12_bits[i], 1, 1, | |
509 | bitalloc_12_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); | |
510 | } | |
511 | dca_scalefactor.offset = -64; | |
f6fa7814 | 512 | dca_scalefactor.wrap = 2; |
2ba45a60 | 513 | for (i = 0; i < 5; i++) { |
f6fa7814 | 514 | dca_scalefactor.vlc[i].table = &dca_table[dca_vlc_offs[i + 5]]; |
2ba45a60 DM |
515 | dca_scalefactor.vlc[i].table_allocated = dca_vlc_offs[i + 6] - dca_vlc_offs[i + 5]; |
516 | init_vlc(&dca_scalefactor.vlc[i], SCALES_VLC_BITS, 129, | |
517 | scales_bits[i], 1, 1, | |
518 | scales_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); | |
519 | } | |
520 | dca_tmode.offset = 0; | |
f6fa7814 | 521 | dca_tmode.wrap = 1; |
2ba45a60 | 522 | for (i = 0; i < 4; i++) { |
f6fa7814 | 523 | dca_tmode.vlc[i].table = &dca_table[dca_vlc_offs[i + 10]]; |
2ba45a60 DM |
524 | dca_tmode.vlc[i].table_allocated = dca_vlc_offs[i + 11] - dca_vlc_offs[i + 10]; |
525 | init_vlc(&dca_tmode.vlc[i], tmode_vlc_bits[i], 4, | |
526 | tmode_bits[i], 1, 1, | |
527 | tmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); | |
528 | } | |
529 | ||
530 | for (i = 0; i < 10; i++) | |
531 | for (j = 0; j < 7; j++) { | |
532 | if (!bitalloc_codes[i][j]) | |
533 | break; | |
534 | dca_smpl_bitalloc[i + 1].offset = bitalloc_offsets[i]; | |
535 | dca_smpl_bitalloc[i + 1].wrap = 1 + (j > 4); | |
536 | dca_smpl_bitalloc[i + 1].vlc[j].table = &dca_table[dca_vlc_offs[c]]; | |
537 | dca_smpl_bitalloc[i + 1].vlc[j].table_allocated = dca_vlc_offs[c + 1] - dca_vlc_offs[c]; | |
538 | ||
539 | init_vlc(&dca_smpl_bitalloc[i + 1].vlc[j], bitalloc_maxbits[i][j], | |
540 | bitalloc_sizes[i], | |
541 | bitalloc_bits[i][j], 1, 1, | |
542 | bitalloc_codes[i][j], 2, 2, INIT_VLC_USE_NEW_STATIC); | |
543 | c++; | |
544 | } | |
545 | vlcs_initialized = 1; | |
546 | } | |
547 | ||
548 | static inline void get_array(GetBitContext *gb, int *dst, int len, int bits) | |
549 | { | |
550 | while (len--) | |
551 | *dst++ = get_bits(gb, bits); | |
552 | } | |
553 | ||
554 | static inline int dca_xxch2index(DCAContext *s, int xxch_ch) | |
555 | { | |
556 | int i, base, mask; | |
557 | ||
558 | /* locate channel set containing the channel */ | |
559 | for (i = -1, base = 0, mask = (s->xxch_core_spkmask & ~DCA_XXCH_LFE1); | |
560 | i <= s->xxch_chset && !(mask & xxch_ch); mask = s->xxch_spk_masks[++i]) | |
561 | base += av_popcount(mask); | |
562 | ||
563 | return base + av_popcount(mask & (xxch_ch - 1)); | |
564 | } | |
565 | ||
566 | static int dca_parse_audio_coding_header(DCAContext *s, int base_channel, | |
567 | int xxch) | |
568 | { | |
569 | int i, j; | |
570 | static const float adj_table[4] = { 1.0, 1.1250, 1.2500, 1.4375 }; | |
571 | static const int bitlen[11] = { 0, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3 }; | |
572 | static const int thr[11] = { 0, 1, 3, 3, 3, 3, 7, 7, 7, 7, 7 }; | |
573 | int hdr_pos = 0, hdr_size = 0; | |
574 | float scale_factor; | |
575 | int this_chans, acc_mask; | |
576 | int embedded_downmix; | |
577 | int nchans, mask[8]; | |
578 | int coeff, ichan; | |
579 | ||
580 | /* xxch has arbitrary sized audio coding headers */ | |
581 | if (xxch) { | |
582 | hdr_pos = get_bits_count(&s->gb); | |
583 | hdr_size = get_bits(&s->gb, 7) + 1; | |
584 | } | |
585 | ||
586 | nchans = get_bits(&s->gb, 3) + 1; | |
587 | s->total_channels = nchans + base_channel; | |
588 | s->prim_channels = s->total_channels; | |
589 | ||
590 | /* obtain speaker layout mask & downmix coefficients for XXCH */ | |
591 | if (xxch) { | |
592 | acc_mask = s->xxch_core_spkmask; | |
593 | ||
594 | this_chans = get_bits(&s->gb, s->xxch_nbits_spk_mask - 6) << 6; | |
595 | s->xxch_spk_masks[s->xxch_chset] = this_chans; | |
596 | s->xxch_chset_nch[s->xxch_chset] = nchans; | |
597 | ||
598 | for (i = 0; i <= s->xxch_chset; i++) | |
599 | acc_mask |= s->xxch_spk_masks[i]; | |
600 | ||
601 | /* check for downmixing information */ | |
602 | if (get_bits1(&s->gb)) { | |
603 | embedded_downmix = get_bits1(&s->gb); | |
604 | coeff = get_bits(&s->gb, 6); | |
605 | ||
606 | if (coeff<1 || coeff>61) { | |
607 | av_log(s->avctx, AV_LOG_ERROR, "6bit coeff %d is out of range\n", coeff); | |
608 | return AVERROR_INVALIDDATA; | |
609 | } | |
610 | ||
611 | scale_factor = -1.0f / dca_dmix_code((coeff<<2)-3); | |
612 | ||
613 | s->xxch_dmix_sf[s->xxch_chset] = scale_factor; | |
614 | ||
615 | for (i = base_channel; i < s->prim_channels; i++) { | |
616 | mask[i] = get_bits(&s->gb, s->xxch_nbits_spk_mask); | |
617 | } | |
618 | ||
619 | for (j = base_channel; j < s->prim_channels; j++) { | |
620 | memset(s->xxch_dmix_coeff[j], 0, sizeof(s->xxch_dmix_coeff[0])); | |
621 | s->xxch_dmix_embedded |= (embedded_downmix << j); | |
622 | for (i = 0; i < s->xxch_nbits_spk_mask; i++) { | |
623 | if (mask[j] & (1 << i)) { | |
624 | if ((1 << i) == DCA_XXCH_LFE1) { | |
625 | av_log(s->avctx, AV_LOG_WARNING, | |
626 | "DCA-XXCH: dmix to LFE1 not supported.\n"); | |
627 | continue; | |
628 | } | |
629 | ||
630 | coeff = get_bits(&s->gb, 7); | |
631 | ichan = dca_xxch2index(s, 1 << i); | |
632 | if ((coeff&63)<1 || (coeff&63)>61) { | |
633 | av_log(s->avctx, AV_LOG_ERROR, "7bit coeff %d is out of range\n", coeff); | |
634 | return AVERROR_INVALIDDATA; | |
635 | } | |
636 | s->xxch_dmix_coeff[j][ichan] = dca_dmix_code((coeff<<2)-3); | |
637 | } | |
638 | } | |
639 | } | |
640 | } | |
641 | } | |
642 | ||
643 | if (s->prim_channels > DCA_PRIM_CHANNELS_MAX) | |
644 | s->prim_channels = DCA_PRIM_CHANNELS_MAX; | |
645 | ||
2ba45a60 DM |
646 | for (i = base_channel; i < s->prim_channels; i++) { |
647 | s->subband_activity[i] = get_bits(&s->gb, 5) + 2; | |
648 | if (s->subband_activity[i] > DCA_SUBBANDS) | |
649 | s->subband_activity[i] = DCA_SUBBANDS; | |
650 | } | |
651 | for (i = base_channel; i < s->prim_channels; i++) { | |
652 | s->vq_start_subband[i] = get_bits(&s->gb, 5) + 1; | |
653 | if (s->vq_start_subband[i] > DCA_SUBBANDS) | |
654 | s->vq_start_subband[i] = DCA_SUBBANDS; | |
655 | } | |
656 | get_array(&s->gb, s->joint_intensity + base_channel, s->prim_channels - base_channel, 3); | |
657 | get_array(&s->gb, s->transient_huffman + base_channel, s->prim_channels - base_channel, 2); | |
658 | get_array(&s->gb, s->scalefactor_huffman + base_channel, s->prim_channels - base_channel, 3); | |
659 | get_array(&s->gb, s->bitalloc_huffman + base_channel, s->prim_channels - base_channel, 3); | |
660 | ||
661 | /* Get codebooks quantization indexes */ | |
662 | if (!base_channel) | |
663 | memset(s->quant_index_huffman, 0, sizeof(s->quant_index_huffman)); | |
664 | for (j = 1; j < 11; j++) | |
665 | for (i = base_channel; i < s->prim_channels; i++) | |
666 | s->quant_index_huffman[i][j] = get_bits(&s->gb, bitlen[j]); | |
667 | ||
668 | /* Get scale factor adjustment */ | |
669 | for (j = 0; j < 11; j++) | |
670 | for (i = base_channel; i < s->prim_channels; i++) | |
671 | s->scalefactor_adj[i][j] = 1; | |
672 | ||
673 | for (j = 1; j < 11; j++) | |
674 | for (i = base_channel; i < s->prim_channels; i++) | |
675 | if (s->quant_index_huffman[i][j] < thr[j]) | |
676 | s->scalefactor_adj[i][j] = adj_table[get_bits(&s->gb, 2)]; | |
677 | ||
678 | if (!xxch) { | |
679 | if (s->crc_present) { | |
680 | /* Audio header CRC check */ | |
681 | get_bits(&s->gb, 16); | |
682 | } | |
683 | } else { | |
684 | /* Skip to the end of the header, also ignore CRC if present */ | |
685 | i = get_bits_count(&s->gb); | |
686 | if (hdr_pos + 8 * hdr_size > i) | |
687 | skip_bits_long(&s->gb, hdr_pos + 8 * hdr_size - i); | |
688 | } | |
689 | ||
690 | s->current_subframe = 0; | |
691 | s->current_subsubframe = 0; | |
692 | ||
693 | #ifdef TRACE | |
694 | av_log(s->avctx, AV_LOG_DEBUG, "subframes: %i\n", s->subframes); | |
695 | av_log(s->avctx, AV_LOG_DEBUG, "prim channels: %i\n", s->prim_channels); | |
696 | for (i = base_channel; i < s->prim_channels; i++) { | |
697 | av_log(s->avctx, AV_LOG_DEBUG, "subband activity: %i\n", | |
698 | s->subband_activity[i]); | |
699 | av_log(s->avctx, AV_LOG_DEBUG, "vq start subband: %i\n", | |
700 | s->vq_start_subband[i]); | |
701 | av_log(s->avctx, AV_LOG_DEBUG, "joint intensity: %i\n", | |
702 | s->joint_intensity[i]); | |
703 | av_log(s->avctx, AV_LOG_DEBUG, "transient mode codebook: %i\n", | |
704 | s->transient_huffman[i]); | |
705 | av_log(s->avctx, AV_LOG_DEBUG, "scale factor codebook: %i\n", | |
706 | s->scalefactor_huffman[i]); | |
707 | av_log(s->avctx, AV_LOG_DEBUG, "bit allocation quantizer: %i\n", | |
708 | s->bitalloc_huffman[i]); | |
709 | av_log(s->avctx, AV_LOG_DEBUG, "quant index huff:"); | |
710 | for (j = 0; j < 11; j++) | |
711 | av_log(s->avctx, AV_LOG_DEBUG, " %i", s->quant_index_huffman[i][j]); | |
712 | av_log(s->avctx, AV_LOG_DEBUG, "\n"); | |
713 | av_log(s->avctx, AV_LOG_DEBUG, "scalefac adj:"); | |
714 | for (j = 0; j < 11; j++) | |
715 | av_log(s->avctx, AV_LOG_DEBUG, " %1.3f", s->scalefactor_adj[i][j]); | |
716 | av_log(s->avctx, AV_LOG_DEBUG, "\n"); | |
717 | } | |
718 | #endif | |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
723 | static int dca_parse_frame_header(DCAContext *s) | |
724 | { | |
725 | init_get_bits(&s->gb, s->dca_buffer, s->dca_buffer_size * 8); | |
726 | ||
727 | /* Sync code */ | |
728 | skip_bits_long(&s->gb, 32); | |
729 | ||
730 | /* Frame header */ | |
731 | s->frame_type = get_bits(&s->gb, 1); | |
732 | s->samples_deficit = get_bits(&s->gb, 5) + 1; | |
733 | s->crc_present = get_bits(&s->gb, 1); | |
734 | s->sample_blocks = get_bits(&s->gb, 7) + 1; | |
735 | s->frame_size = get_bits(&s->gb, 14) + 1; | |
736 | if (s->frame_size < 95) | |
737 | return AVERROR_INVALIDDATA; | |
738 | s->amode = get_bits(&s->gb, 6); | |
739 | s->sample_rate = avpriv_dca_sample_rates[get_bits(&s->gb, 4)]; | |
740 | if (!s->sample_rate) | |
741 | return AVERROR_INVALIDDATA; | |
742 | s->bit_rate_index = get_bits(&s->gb, 5); | |
743 | s->bit_rate = dca_bit_rates[s->bit_rate_index]; | |
744 | if (!s->bit_rate) | |
745 | return AVERROR_INVALIDDATA; | |
746 | ||
747 | skip_bits1(&s->gb); // always 0 (reserved, cf. ETSI TS 102 114 V1.4.1) | |
748 | s->dynrange = get_bits(&s->gb, 1); | |
749 | s->timestamp = get_bits(&s->gb, 1); | |
750 | s->aux_data = get_bits(&s->gb, 1); | |
751 | s->hdcd = get_bits(&s->gb, 1); | |
752 | s->ext_descr = get_bits(&s->gb, 3); | |
753 | s->ext_coding = get_bits(&s->gb, 1); | |
754 | s->aspf = get_bits(&s->gb, 1); | |
755 | s->lfe = get_bits(&s->gb, 2); | |
756 | s->predictor_history = get_bits(&s->gb, 1); | |
757 | ||
758 | if (s->lfe > 2) { | |
759 | s->lfe = 0; | |
760 | av_log(s->avctx, AV_LOG_ERROR, "Invalid LFE value: %d\n", s->lfe); | |
761 | return AVERROR_INVALIDDATA; | |
762 | } | |
763 | ||
764 | /* TODO: check CRC */ | |
765 | if (s->crc_present) | |
766 | s->header_crc = get_bits(&s->gb, 16); | |
767 | ||
768 | s->multirate_inter = get_bits(&s->gb, 1); | |
769 | s->version = get_bits(&s->gb, 4); | |
770 | s->copy_history = get_bits(&s->gb, 2); | |
771 | s->source_pcm_res = get_bits(&s->gb, 3); | |
772 | s->front_sum = get_bits(&s->gb, 1); | |
773 | s->surround_sum = get_bits(&s->gb, 1); | |
774 | s->dialog_norm = get_bits(&s->gb, 4); | |
775 | ||
776 | /* FIXME: channels mixing levels */ | |
777 | s->output = s->amode; | |
778 | if (s->lfe) | |
779 | s->output |= DCA_LFE; | |
780 | ||
781 | #ifdef TRACE | |
782 | av_log(s->avctx, AV_LOG_DEBUG, "frame type: %i\n", s->frame_type); | |
783 | av_log(s->avctx, AV_LOG_DEBUG, "samples deficit: %i\n", s->samples_deficit); | |
784 | av_log(s->avctx, AV_LOG_DEBUG, "crc present: %i\n", s->crc_present); | |
785 | av_log(s->avctx, AV_LOG_DEBUG, "sample blocks: %i (%i samples)\n", | |
786 | s->sample_blocks, s->sample_blocks * 32); | |
787 | av_log(s->avctx, AV_LOG_DEBUG, "frame size: %i bytes\n", s->frame_size); | |
788 | av_log(s->avctx, AV_LOG_DEBUG, "amode: %i (%i channels)\n", | |
789 | s->amode, dca_channels[s->amode]); | |
790 | av_log(s->avctx, AV_LOG_DEBUG, "sample rate: %i Hz\n", | |
791 | s->sample_rate); | |
792 | av_log(s->avctx, AV_LOG_DEBUG, "bit rate: %i bits/s\n", | |
793 | s->bit_rate); | |
794 | av_log(s->avctx, AV_LOG_DEBUG, "dynrange: %i\n", s->dynrange); | |
795 | av_log(s->avctx, AV_LOG_DEBUG, "timestamp: %i\n", s->timestamp); | |
796 | av_log(s->avctx, AV_LOG_DEBUG, "aux_data: %i\n", s->aux_data); | |
797 | av_log(s->avctx, AV_LOG_DEBUG, "hdcd: %i\n", s->hdcd); | |
798 | av_log(s->avctx, AV_LOG_DEBUG, "ext descr: %i\n", s->ext_descr); | |
799 | av_log(s->avctx, AV_LOG_DEBUG, "ext coding: %i\n", s->ext_coding); | |
800 | av_log(s->avctx, AV_LOG_DEBUG, "aspf: %i\n", s->aspf); | |
801 | av_log(s->avctx, AV_LOG_DEBUG, "lfe: %i\n", s->lfe); | |
802 | av_log(s->avctx, AV_LOG_DEBUG, "predictor history: %i\n", | |
803 | s->predictor_history); | |
804 | av_log(s->avctx, AV_LOG_DEBUG, "header crc: %i\n", s->header_crc); | |
805 | av_log(s->avctx, AV_LOG_DEBUG, "multirate inter: %i\n", | |
806 | s->multirate_inter); | |
807 | av_log(s->avctx, AV_LOG_DEBUG, "version number: %i\n", s->version); | |
808 | av_log(s->avctx, AV_LOG_DEBUG, "copy history: %i\n", s->copy_history); | |
809 | av_log(s->avctx, AV_LOG_DEBUG, | |
810 | "source pcm resolution: %i (%i bits/sample)\n", | |
811 | s->source_pcm_res, dca_bits_per_sample[s->source_pcm_res]); | |
812 | av_log(s->avctx, AV_LOG_DEBUG, "front sum: %i\n", s->front_sum); | |
813 | av_log(s->avctx, AV_LOG_DEBUG, "surround sum: %i\n", s->surround_sum); | |
814 | av_log(s->avctx, AV_LOG_DEBUG, "dialog norm: %i\n", s->dialog_norm); | |
815 | av_log(s->avctx, AV_LOG_DEBUG, "\n"); | |
816 | #endif | |
817 | ||
818 | /* Primary audio coding header */ | |
f6fa7814 | 819 | s->subframes = get_bits(&s->gb, 4) + 1; |
2ba45a60 DM |
820 | |
821 | return dca_parse_audio_coding_header(s, 0, 0); | |
822 | } | |
823 | ||
2ba45a60 DM |
824 | static inline int get_scale(GetBitContext *gb, int level, int value, int log2range) |
825 | { | |
826 | if (level < 5) { | |
827 | /* huffman encoded */ | |
828 | value += get_bitalloc(gb, &dca_scalefactor, level); | |
f6fa7814 | 829 | value = av_clip(value, 0, (1 << log2range) - 1); |
2ba45a60 DM |
830 | } else if (level < 8) { |
831 | if (level + 1 > log2range) { | |
832 | skip_bits(gb, level + 1 - log2range); | |
833 | value = get_bits(gb, log2range); | |
834 | } else { | |
835 | value = get_bits(gb, level + 1); | |
836 | } | |
837 | } | |
838 | return value; | |
839 | } | |
840 | ||
841 | static int dca_subframe_header(DCAContext *s, int base_channel, int block_index) | |
842 | { | |
843 | /* Primary audio coding side information */ | |
844 | int j, k; | |
845 | ||
846 | if (get_bits_left(&s->gb) < 0) | |
847 | return AVERROR_INVALIDDATA; | |
848 | ||
849 | if (!base_channel) { | |
850 | s->subsubframes[s->current_subframe] = get_bits(&s->gb, 2) + 1; | |
851 | s->partial_samples[s->current_subframe] = get_bits(&s->gb, 3); | |
852 | } | |
853 | ||
854 | for (j = base_channel; j < s->prim_channels; j++) { | |
855 | for (k = 0; k < s->subband_activity[j]; k++) | |
856 | s->prediction_mode[j][k] = get_bits(&s->gb, 1); | |
857 | } | |
858 | ||
859 | /* Get prediction codebook */ | |
860 | for (j = base_channel; j < s->prim_channels; j++) { | |
861 | for (k = 0; k < s->subband_activity[j]; k++) { | |
862 | if (s->prediction_mode[j][k] > 0) { | |
863 | /* (Prediction coefficient VQ address) */ | |
864 | s->prediction_vq[j][k] = get_bits(&s->gb, 12); | |
865 | } | |
866 | } | |
867 | } | |
868 | ||
869 | /* Bit allocation index */ | |
870 | for (j = base_channel; j < s->prim_channels; j++) { | |
871 | for (k = 0; k < s->vq_start_subband[j]; k++) { | |
872 | if (s->bitalloc_huffman[j] == 6) | |
873 | s->bitalloc[j][k] = get_bits(&s->gb, 5); | |
874 | else if (s->bitalloc_huffman[j] == 5) | |
875 | s->bitalloc[j][k] = get_bits(&s->gb, 4); | |
876 | else if (s->bitalloc_huffman[j] == 7) { | |
877 | av_log(s->avctx, AV_LOG_ERROR, | |
878 | "Invalid bit allocation index\n"); | |
879 | return AVERROR_INVALIDDATA; | |
880 | } else { | |
881 | s->bitalloc[j][k] = | |
882 | get_bitalloc(&s->gb, &dca_bitalloc_index, s->bitalloc_huffman[j]); | |
883 | } | |
884 | ||
885 | if (s->bitalloc[j][k] > 26) { | |
886 | av_dlog(s->avctx, "bitalloc index [%i][%i] too big (%i)\n", | |
887 | j, k, s->bitalloc[j][k]); | |
888 | return AVERROR_INVALIDDATA; | |
889 | } | |
890 | } | |
891 | } | |
892 | ||
893 | /* Transition mode */ | |
894 | for (j = base_channel; j < s->prim_channels; j++) { | |
895 | for (k = 0; k < s->subband_activity[j]; k++) { | |
896 | s->transition_mode[j][k] = 0; | |
897 | if (s->subsubframes[s->current_subframe] > 1 && | |
898 | k < s->vq_start_subband[j] && s->bitalloc[j][k] > 0) { | |
899 | s->transition_mode[j][k] = | |
900 | get_bitalloc(&s->gb, &dca_tmode, s->transient_huffman[j]); | |
901 | } | |
902 | } | |
903 | } | |
904 | ||
905 | if (get_bits_left(&s->gb) < 0) | |
906 | return AVERROR_INVALIDDATA; | |
907 | ||
908 | for (j = base_channel; j < s->prim_channels; j++) { | |
909 | const uint32_t *scale_table; | |
910 | int scale_sum, log_size; | |
911 | ||
912 | memset(s->scale_factor[j], 0, | |
913 | s->subband_activity[j] * sizeof(s->scale_factor[0][0][0]) * 2); | |
914 | ||
915 | if (s->scalefactor_huffman[j] == 6) { | |
916 | scale_table = scale_factor_quant7; | |
f6fa7814 | 917 | log_size = 7; |
2ba45a60 DM |
918 | } else { |
919 | scale_table = scale_factor_quant6; | |
f6fa7814 | 920 | log_size = 6; |
2ba45a60 DM |
921 | } |
922 | ||
923 | /* When huffman coded, only the difference is encoded */ | |
924 | scale_sum = 0; | |
925 | ||
926 | for (k = 0; k < s->subband_activity[j]; k++) { | |
927 | if (k >= s->vq_start_subband[j] || s->bitalloc[j][k] > 0) { | |
928 | scale_sum = get_scale(&s->gb, s->scalefactor_huffman[j], scale_sum, log_size); | |
929 | s->scale_factor[j][k][0] = scale_table[scale_sum]; | |
930 | } | |
931 | ||
932 | if (k < s->vq_start_subband[j] && s->transition_mode[j][k]) { | |
933 | /* Get second scale factor */ | |
934 | scale_sum = get_scale(&s->gb, s->scalefactor_huffman[j], scale_sum, log_size); | |
935 | s->scale_factor[j][k][1] = scale_table[scale_sum]; | |
936 | } | |
937 | } | |
938 | } | |
939 | ||
940 | /* Joint subband scale factor codebook select */ | |
941 | for (j = base_channel; j < s->prim_channels; j++) { | |
942 | /* Transmitted only if joint subband coding enabled */ | |
943 | if (s->joint_intensity[j] > 0) | |
944 | s->joint_huff[j] = get_bits(&s->gb, 3); | |
945 | } | |
946 | ||
947 | if (get_bits_left(&s->gb) < 0) | |
948 | return AVERROR_INVALIDDATA; | |
949 | ||
950 | /* Scale factors for joint subband coding */ | |
951 | for (j = base_channel; j < s->prim_channels; j++) { | |
952 | int source_channel; | |
953 | ||
954 | /* Transmitted only if joint subband coding enabled */ | |
955 | if (s->joint_intensity[j] > 0) { | |
956 | int scale = 0; | |
957 | source_channel = s->joint_intensity[j] - 1; | |
958 | ||
959 | /* When huffman coded, only the difference is encoded | |
960 | * (is this valid as well for joint scales ???) */ | |
961 | ||
962 | for (k = s->subband_activity[j]; k < s->subband_activity[source_channel]; k++) { | |
963 | scale = get_scale(&s->gb, s->joint_huff[j], 64 /* bias */, 7); | |
964 | s->joint_scale_factor[j][k] = scale; /*joint_scale_table[scale]; */ | |
965 | } | |
966 | ||
967 | if (!(s->debug_flag & 0x02)) { | |
968 | av_log(s->avctx, AV_LOG_DEBUG, | |
969 | "Joint stereo coding not supported\n"); | |
970 | s->debug_flag |= 0x02; | |
971 | } | |
972 | } | |
973 | } | |
974 | ||
975 | /* Dynamic range coefficient */ | |
976 | if (!base_channel && s->dynrange) | |
977 | s->dynrange_coef = get_bits(&s->gb, 8); | |
978 | ||
979 | /* Side information CRC check word */ | |
980 | if (s->crc_present) { | |
981 | get_bits(&s->gb, 16); | |
982 | } | |
983 | ||
984 | /* | |
985 | * Primary audio data arrays | |
986 | */ | |
987 | ||
988 | /* VQ encoded high frequency subbands */ | |
989 | for (j = base_channel; j < s->prim_channels; j++) | |
990 | for (k = s->vq_start_subband[j]; k < s->subband_activity[j]; k++) | |
991 | /* 1 vector -> 32 samples */ | |
992 | s->high_freq_vq[j][k] = get_bits(&s->gb, 10); | |
993 | ||
994 | /* Low frequency effect data */ | |
995 | if (!base_channel && s->lfe) { | |
996 | int quant7; | |
997 | /* LFE samples */ | |
f6fa7814 | 998 | int lfe_samples = 2 * s->lfe * (4 + block_index); |
2ba45a60 DM |
999 | int lfe_end_sample = 2 * s->lfe * (4 + block_index + s->subsubframes[s->current_subframe]); |
1000 | float lfe_scale; | |
1001 | ||
1002 | for (j = lfe_samples; j < lfe_end_sample; j++) { | |
1003 | /* Signed 8 bits int */ | |
1004 | s->lfe_data[j] = get_sbits(&s->gb, 8); | |
1005 | } | |
1006 | ||
1007 | /* Scale factor index */ | |
1008 | quant7 = get_bits(&s->gb, 8); | |
1009 | if (quant7 > 127) { | |
1010 | avpriv_request_sample(s->avctx, "LFEScaleIndex larger than 127"); | |
1011 | return AVERROR_INVALIDDATA; | |
1012 | } | |
1013 | s->lfe_scale_factor = scale_factor_quant7[quant7]; | |
1014 | ||
1015 | /* Quantization step size * scale factor */ | |
1016 | lfe_scale = 0.035 * s->lfe_scale_factor; | |
1017 | ||
1018 | for (j = lfe_samples; j < lfe_end_sample; j++) | |
1019 | s->lfe_data[j] *= lfe_scale; | |
1020 | } | |
1021 | ||
1022 | #ifdef TRACE | |
1023 | av_log(s->avctx, AV_LOG_DEBUG, "subsubframes: %i\n", | |
1024 | s->subsubframes[s->current_subframe]); | |
1025 | av_log(s->avctx, AV_LOG_DEBUG, "partial samples: %i\n", | |
1026 | s->partial_samples[s->current_subframe]); | |
1027 | ||
1028 | for (j = base_channel; j < s->prim_channels; j++) { | |
1029 | av_log(s->avctx, AV_LOG_DEBUG, "prediction mode:"); | |
1030 | for (k = 0; k < s->subband_activity[j]; k++) | |
1031 | av_log(s->avctx, AV_LOG_DEBUG, " %i", s->prediction_mode[j][k]); | |
1032 | av_log(s->avctx, AV_LOG_DEBUG, "\n"); | |
1033 | } | |
1034 | for (j = base_channel; j < s->prim_channels; j++) { | |
1035 | for (k = 0; k < s->subband_activity[j]; k++) | |
1036 | av_log(s->avctx, AV_LOG_DEBUG, | |
1037 | "prediction coefs: %f, %f, %f, %f\n", | |
1038 | (float) adpcm_vb[s->prediction_vq[j][k]][0] / 8192, | |
1039 | (float) adpcm_vb[s->prediction_vq[j][k]][1] / 8192, | |
1040 | (float) adpcm_vb[s->prediction_vq[j][k]][2] / 8192, | |
1041 | (float) adpcm_vb[s->prediction_vq[j][k]][3] / 8192); | |
1042 | } | |
1043 | for (j = base_channel; j < s->prim_channels; j++) { | |
1044 | av_log(s->avctx, AV_LOG_DEBUG, "bitalloc index: "); | |
1045 | for (k = 0; k < s->vq_start_subband[j]; k++) | |
1046 | av_log(s->avctx, AV_LOG_DEBUG, "%2.2i ", s->bitalloc[j][k]); | |
1047 | av_log(s->avctx, AV_LOG_DEBUG, "\n"); | |
1048 | } | |
1049 | for (j = base_channel; j < s->prim_channels; j++) { | |
1050 | av_log(s->avctx, AV_LOG_DEBUG, "Transition mode:"); | |
1051 | for (k = 0; k < s->subband_activity[j]; k++) | |
1052 | av_log(s->avctx, AV_LOG_DEBUG, " %i", s->transition_mode[j][k]); | |
1053 | av_log(s->avctx, AV_LOG_DEBUG, "\n"); | |
1054 | } | |
1055 | for (j = base_channel; j < s->prim_channels; j++) { | |
1056 | av_log(s->avctx, AV_LOG_DEBUG, "Scale factor:"); | |
1057 | for (k = 0; k < s->subband_activity[j]; k++) { | |
1058 | if (k >= s->vq_start_subband[j] || s->bitalloc[j][k] > 0) | |
1059 | av_log(s->avctx, AV_LOG_DEBUG, " %i", s->scale_factor[j][k][0]); | |
1060 | if (k < s->vq_start_subband[j] && s->transition_mode[j][k]) | |
1061 | av_log(s->avctx, AV_LOG_DEBUG, " %i(t)", s->scale_factor[j][k][1]); | |
1062 | } | |
1063 | av_log(s->avctx, AV_LOG_DEBUG, "\n"); | |
1064 | } | |
1065 | for (j = base_channel; j < s->prim_channels; j++) { | |
1066 | if (s->joint_intensity[j] > 0) { | |
1067 | int source_channel = s->joint_intensity[j] - 1; | |
1068 | av_log(s->avctx, AV_LOG_DEBUG, "Joint scale factor index:\n"); | |
1069 | for (k = s->subband_activity[j]; k < s->subband_activity[source_channel]; k++) | |
1070 | av_log(s->avctx, AV_LOG_DEBUG, " %i", s->joint_scale_factor[j][k]); | |
1071 | av_log(s->avctx, AV_LOG_DEBUG, "\n"); | |
1072 | } | |
1073 | } | |
1074 | for (j = base_channel; j < s->prim_channels; j++) | |
1075 | for (k = s->vq_start_subband[j]; k < s->subband_activity[j]; k++) | |
1076 | av_log(s->avctx, AV_LOG_DEBUG, "VQ index: %i\n", s->high_freq_vq[j][k]); | |
1077 | if (!base_channel && s->lfe) { | |
f6fa7814 | 1078 | int lfe_samples = 2 * s->lfe * (4 + block_index); |
2ba45a60 DM |
1079 | int lfe_end_sample = 2 * s->lfe * (4 + block_index + s->subsubframes[s->current_subframe]); |
1080 | ||
1081 | av_log(s->avctx, AV_LOG_DEBUG, "LFE samples:\n"); | |
1082 | for (j = lfe_samples; j < lfe_end_sample; j++) | |
1083 | av_log(s->avctx, AV_LOG_DEBUG, " %f", s->lfe_data[j]); | |
1084 | av_log(s->avctx, AV_LOG_DEBUG, "\n"); | |
1085 | } | |
1086 | #endif | |
1087 | ||
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | static void qmf_32_subbands(DCAContext *s, int chans, | |
1092 | float samples_in[32][8], float *samples_out, | |
1093 | float scale) | |
1094 | { | |
1095 | const float *prCoeff; | |
1096 | ||
1097 | int sb_act = s->subband_activity[chans]; | |
1098 | ||
1099 | scale *= sqrt(1 / 8.0); | |
1100 | ||
1101 | /* Select filter */ | |
1102 | if (!s->multirate_inter) /* Non-perfect reconstruction */ | |
1103 | prCoeff = fir_32bands_nonperfect; | |
1104 | else /* Perfect reconstruction */ | |
1105 | prCoeff = fir_32bands_perfect; | |
1106 | ||
1107 | s->dcadsp.qmf_32_subbands(samples_in, sb_act, &s->synth, &s->imdct, | |
1108 | s->subband_fir_hist[chans], | |
1109 | &s->hist_index[chans], | |
1110 | s->subband_fir_noidea[chans], prCoeff, | |
1111 | samples_out, s->raXin, scale); | |
1112 | } | |
1113 | ||
1114 | static void lfe_interpolation_fir(DCAContext *s, int decimation_select, | |
1115 | int num_deci_sample, float *samples_in, | |
1116 | float *samples_out) | |
1117 | { | |
1118 | /* samples_in: An array holding decimated samples. | |
1119 | * Samples in current subframe starts from samples_in[0], | |
1120 | * while samples_in[-1], samples_in[-2], ..., stores samples | |
1121 | * from last subframe as history. | |
1122 | * | |
1123 | * samples_out: An array holding interpolated samples | |
1124 | */ | |
1125 | ||
1126 | int idx; | |
1127 | const float *prCoeff; | |
1128 | int deciindex; | |
1129 | ||
1130 | /* Select decimation filter */ | |
1131 | if (decimation_select == 1) { | |
f6fa7814 | 1132 | idx = 1; |
2ba45a60 DM |
1133 | prCoeff = lfe_fir_128; |
1134 | } else { | |
f6fa7814 | 1135 | idx = 0; |
2ba45a60 DM |
1136 | prCoeff = lfe_fir_64; |
1137 | } | |
1138 | /* Interpolation */ | |
1139 | for (deciindex = 0; deciindex < num_deci_sample; deciindex++) { | |
1140 | s->dcadsp.lfe_fir[idx](samples_out, samples_in, prCoeff); | |
1141 | samples_in++; | |
1142 | samples_out += 2 * 32 * (1 + idx); | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | /* downmixing routines */ | |
1147 | #define MIX_REAR1(samples, s1, rs, coef) \ | |
1148 | samples[0][i] += samples[s1][i] * coef[rs][0]; \ | |
1149 | samples[1][i] += samples[s1][i] * coef[rs][1]; | |
1150 | ||
1151 | #define MIX_REAR2(samples, s1, s2, rs, coef) \ | |
1152 | samples[0][i] += samples[s1][i] * coef[rs][0] + samples[s2][i] * coef[rs + 1][0]; \ | |
1153 | samples[1][i] += samples[s1][i] * coef[rs][1] + samples[s2][i] * coef[rs + 1][1]; | |
1154 | ||
1155 | #define MIX_FRONT3(samples, coef) \ | |
1156 | t = samples[c][i]; \ | |
1157 | u = samples[l][i]; \ | |
1158 | v = samples[r][i]; \ | |
1159 | samples[0][i] = t * coef[0][0] + u * coef[1][0] + v * coef[2][0]; \ | |
1160 | samples[1][i] = t * coef[0][1] + u * coef[1][1] + v * coef[2][1]; | |
1161 | ||
1162 | #define DOWNMIX_TO_STEREO(op1, op2) \ | |
1163 | for (i = 0; i < 256; i++) { \ | |
1164 | op1 \ | |
1165 | op2 \ | |
1166 | } | |
1167 | ||
1168 | static void dca_downmix(float **samples, int srcfmt, int lfe_present, | |
1169 | float coef[DCA_PRIM_CHANNELS_MAX + 1][2], | |
1170 | const int8_t *channel_mapping) | |
1171 | { | |
1172 | int c, l, r, sl, sr, s; | |
1173 | int i; | |
1174 | float t, u, v; | |
1175 | ||
1176 | switch (srcfmt) { | |
1177 | case DCA_MONO: | |
1178 | case DCA_4F2R: | |
1179 | av_log(NULL, AV_LOG_ERROR, "Not implemented!\n"); | |
1180 | break; | |
1181 | case DCA_CHANNEL: | |
1182 | case DCA_STEREO: | |
1183 | case DCA_STEREO_TOTAL: | |
1184 | case DCA_STEREO_SUMDIFF: | |
1185 | break; | |
1186 | case DCA_3F: | |
1187 | c = channel_mapping[0]; | |
1188 | l = channel_mapping[1]; | |
1189 | r = channel_mapping[2]; | |
1190 | DOWNMIX_TO_STEREO(MIX_FRONT3(samples, coef), ); | |
1191 | break; | |
1192 | case DCA_2F1R: | |
1193 | s = channel_mapping[2]; | |
1194 | DOWNMIX_TO_STEREO(MIX_REAR1(samples, s, 2, coef), ); | |
1195 | break; | |
1196 | case DCA_3F1R: | |
1197 | c = channel_mapping[0]; | |
1198 | l = channel_mapping[1]; | |
1199 | r = channel_mapping[2]; | |
1200 | s = channel_mapping[3]; | |
1201 | DOWNMIX_TO_STEREO(MIX_FRONT3(samples, coef), | |
1202 | MIX_REAR1(samples, s, 3, coef)); | |
1203 | break; | |
1204 | case DCA_2F2R: | |
1205 | sl = channel_mapping[2]; | |
1206 | sr = channel_mapping[3]; | |
1207 | DOWNMIX_TO_STEREO(MIX_REAR2(samples, sl, sr, 2, coef), ); | |
1208 | break; | |
1209 | case DCA_3F2R: | |
1210 | c = channel_mapping[0]; | |
1211 | l = channel_mapping[1]; | |
1212 | r = channel_mapping[2]; | |
1213 | sl = channel_mapping[3]; | |
1214 | sr = channel_mapping[4]; | |
1215 | DOWNMIX_TO_STEREO(MIX_FRONT3(samples, coef), | |
1216 | MIX_REAR2(samples, sl, sr, 3, coef)); | |
1217 | break; | |
1218 | } | |
1219 | if (lfe_present) { | |
1220 | int lf_buf = dca_lfe_index[srcfmt]; | |
f6fa7814 | 1221 | int lf_idx = dca_channels[srcfmt]; |
2ba45a60 DM |
1222 | for (i = 0; i < 256; i++) { |
1223 | samples[0][i] += samples[lf_buf][i] * coef[lf_idx][0]; | |
1224 | samples[1][i] += samples[lf_buf][i] * coef[lf_idx][1]; | |
1225 | } | |
1226 | } | |
1227 | } | |
1228 | ||
2ba45a60 DM |
1229 | #ifndef decode_blockcodes |
1230 | /* Very compact version of the block code decoder that does not use table | |
1231 | * look-up but is slightly slower */ | |
1232 | static int decode_blockcode(int code, int levels, int32_t *values) | |
1233 | { | |
1234 | int i; | |
1235 | int offset = (levels - 1) >> 1; | |
1236 | ||
1237 | for (i = 0; i < 4; i++) { | |
1238 | int div = FASTDIV(code, levels); | |
1239 | values[i] = code - offset - div * levels; | |
f6fa7814 | 1240 | code = div; |
2ba45a60 DM |
1241 | } |
1242 | ||
1243 | return code; | |
1244 | } | |
1245 | ||
1246 | static int decode_blockcodes(int code1, int code2, int levels, int32_t *values) | |
1247 | { | |
1248 | return decode_blockcode(code1, levels, values) | | |
1249 | decode_blockcode(code2, levels, values + 4); | |
1250 | } | |
1251 | #endif | |
1252 | ||
1253 | static const uint8_t abits_sizes[7] = { 7, 10, 12, 13, 15, 17, 19 }; | |
1254 | static const uint8_t abits_levels[7] = { 3, 5, 7, 9, 13, 17, 25 }; | |
1255 | ||
1256 | static int dca_subsubframe(DCAContext *s, int base_channel, int block_index) | |
1257 | { | |
1258 | int k, l; | |
1259 | int subsubframe = s->current_subsubframe; | |
1260 | ||
1261 | const float *quant_step_table; | |
1262 | ||
1263 | /* FIXME */ | |
1264 | float (*subband_samples)[DCA_SUBBANDS][8] = s->subband_samples[block_index]; | |
1265 | LOCAL_ALIGNED_16(int32_t, block, [8 * DCA_SUBBANDS]); | |
1266 | ||
1267 | /* | |
1268 | * Audio data | |
1269 | */ | |
1270 | ||
1271 | /* Select quantization step size table */ | |
1272 | if (s->bit_rate_index == 0x1f) | |
1273 | quant_step_table = lossless_quant_d; | |
1274 | else | |
1275 | quant_step_table = lossy_quant_d; | |
1276 | ||
1277 | for (k = base_channel; k < s->prim_channels; k++) { | |
1278 | float rscale[DCA_SUBBANDS]; | |
1279 | ||
1280 | if (get_bits_left(&s->gb) < 0) | |
1281 | return AVERROR_INVALIDDATA; | |
1282 | ||
1283 | for (l = 0; l < s->vq_start_subband[k]; l++) { | |
1284 | int m; | |
1285 | ||
1286 | /* Select the mid-tread linear quantizer */ | |
1287 | int abits = s->bitalloc[k][l]; | |
1288 | ||
1289 | float quant_step_size = quant_step_table[abits]; | |
1290 | ||
1291 | /* | |
1292 | * Determine quantization index code book and its type | |
1293 | */ | |
1294 | ||
1295 | /* Select quantization index code book */ | |
1296 | int sel = s->quant_index_huffman[k][abits]; | |
1297 | ||
1298 | /* | |
1299 | * Extract bits from the bit stream | |
1300 | */ | |
1301 | if (!abits) { | |
1302 | rscale[l] = 0; | |
1303 | memset(block + 8 * l, 0, 8 * sizeof(block[0])); | |
1304 | } else { | |
1305 | /* Deal with transients */ | |
1306 | int sfi = s->transition_mode[k][l] && subsubframe >= s->transition_mode[k][l]; | |
1307 | rscale[l] = quant_step_size * s->scale_factor[k][l][sfi] * | |
f6fa7814 | 1308 | s->scalefactor_adj[k][sel]; |
2ba45a60 DM |
1309 | |
1310 | if (abits >= 11 || !dca_smpl_bitalloc[abits].vlc[sel].table) { | |
1311 | if (abits <= 7) { | |
1312 | /* Block code */ | |
1313 | int block_code1, block_code2, size, levels, err; | |
1314 | ||
1315 | size = abits_sizes[abits - 1]; | |
1316 | levels = abits_levels[abits - 1]; | |
1317 | ||
1318 | block_code1 = get_bits(&s->gb, size); | |
1319 | block_code2 = get_bits(&s->gb, size); | |
f6fa7814 DM |
1320 | err = decode_blockcodes(block_code1, block_code2, |
1321 | levels, block + 8 * l); | |
2ba45a60 DM |
1322 | if (err) { |
1323 | av_log(s->avctx, AV_LOG_ERROR, | |
1324 | "ERROR: block code look-up failed\n"); | |
1325 | return AVERROR_INVALIDDATA; | |
1326 | } | |
1327 | } else { | |
1328 | /* no coding */ | |
1329 | for (m = 0; m < 8; m++) | |
1330 | block[8 * l + m] = get_sbits(&s->gb, abits - 3); | |
1331 | } | |
1332 | } else { | |
1333 | /* Huffman coded */ | |
1334 | for (m = 0; m < 8; m++) | |
1335 | block[8 * l + m] = get_bitalloc(&s->gb, | |
f6fa7814 | 1336 | &dca_smpl_bitalloc[abits], sel); |
2ba45a60 | 1337 | } |
2ba45a60 DM |
1338 | } |
1339 | } | |
1340 | ||
1341 | s->fmt_conv.int32_to_float_fmul_array8(&s->fmt_conv, subband_samples[k][0], | |
1342 | block, rscale, 8 * s->vq_start_subband[k]); | |
1343 | ||
1344 | for (l = 0; l < s->vq_start_subband[k]; l++) { | |
1345 | int m; | |
1346 | /* | |
1347 | * Inverse ADPCM if in prediction mode | |
1348 | */ | |
1349 | if (s->prediction_mode[k][l]) { | |
1350 | int n; | |
1351 | if (s->predictor_history) | |
1352 | subband_samples[k][l][0] += (adpcm_vb[s->prediction_vq[k][l]][0] * | |
1353 | s->subband_samples_hist[k][l][3] + | |
1354 | adpcm_vb[s->prediction_vq[k][l]][1] * | |
1355 | s->subband_samples_hist[k][l][2] + | |
1356 | adpcm_vb[s->prediction_vq[k][l]][2] * | |
1357 | s->subband_samples_hist[k][l][1] + | |
1358 | adpcm_vb[s->prediction_vq[k][l]][3] * | |
1359 | s->subband_samples_hist[k][l][0]) * | |
1360 | (1.0f / 8192); | |
1361 | for (m = 1; m < 8; m++) { | |
1362 | float sum = adpcm_vb[s->prediction_vq[k][l]][0] * | |
1363 | subband_samples[k][l][m - 1]; | |
1364 | for (n = 2; n <= 4; n++) | |
1365 | if (m >= n) | |
1366 | sum += adpcm_vb[s->prediction_vq[k][l]][n - 1] * | |
1367 | subband_samples[k][l][m - n]; | |
1368 | else if (s->predictor_history) | |
1369 | sum += adpcm_vb[s->prediction_vq[k][l]][n - 1] * | |
1370 | s->subband_samples_hist[k][l][m - n + 4]; | |
1371 | subband_samples[k][l][m] += sum * (1.0f / 8192); | |
1372 | } | |
1373 | } | |
1374 | } | |
1375 | ||
1376 | /* | |
1377 | * Decode VQ encoded high frequencies | |
1378 | */ | |
1379 | if (s->subband_activity[k] > s->vq_start_subband[k]) { | |
1380 | if (!(s->debug_flag & 0x01)) { | |
1381 | av_log(s->avctx, AV_LOG_DEBUG, | |
1382 | "Stream with high frequencies VQ coding\n"); | |
1383 | s->debug_flag |= 0x01; | |
1384 | } | |
1385 | s->dcadsp.decode_hf(subband_samples[k], s->high_freq_vq[k], | |
1386 | high_freq_vq, subsubframe * 8, | |
1387 | s->scale_factor[k], s->vq_start_subband[k], | |
1388 | s->subband_activity[k]); | |
1389 | } | |
1390 | } | |
1391 | ||
1392 | /* Check for DSYNC after subsubframe */ | |
1393 | if (s->aspf || subsubframe == s->subsubframes[s->current_subframe] - 1) { | |
1394 | if (0xFFFF == get_bits(&s->gb, 16)) { /* 0xFFFF */ | |
1395 | #ifdef TRACE | |
1396 | av_log(s->avctx, AV_LOG_DEBUG, "Got subframe DSYNC\n"); | |
1397 | #endif | |
1398 | } else { | |
1399 | av_log(s->avctx, AV_LOG_ERROR, "Didn't get subframe DSYNC\n"); | |
1400 | return AVERROR_INVALIDDATA; | |
1401 | } | |
1402 | } | |
1403 | ||
1404 | /* Backup predictor history for adpcm */ | |
1405 | for (k = base_channel; k < s->prim_channels; k++) | |
1406 | for (l = 0; l < s->vq_start_subband[k]; l++) | |
1407 | AV_COPY128(s->subband_samples_hist[k][l], &subband_samples[k][l][4]); | |
1408 | ||
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | static int dca_filter_channels(DCAContext *s, int block_index) | |
1413 | { | |
1414 | float (*subband_samples)[DCA_SUBBANDS][8] = s->subband_samples[block_index]; | |
1415 | int k; | |
1416 | ||
1417 | /* 32 subbands QMF */ | |
1418 | for (k = 0; k < s->prim_channels; k++) { | |
2ba45a60 DM |
1419 | if (s->channel_order_tab[k] >= 0) |
1420 | qmf_32_subbands(s, k, subband_samples[k], | |
1421 | s->samples_chanptr[s->channel_order_tab[k]], | |
f6fa7814 | 1422 | M_SQRT1_2 / 32768.0); |
2ba45a60 DM |
1423 | } |
1424 | ||
1425 | /* Generate LFE samples for this subsubframe FIXME!!! */ | |
1426 | if (s->lfe) { | |
1427 | lfe_interpolation_fir(s, s->lfe, 2 * s->lfe, | |
1428 | s->lfe_data + 2 * s->lfe * (block_index + 4), | |
1429 | s->samples_chanptr[s->lfe_index]); | |
1430 | /* Outputs 20bits pcm samples */ | |
1431 | } | |
1432 | ||
1433 | /* Downmixing to Stereo */ | |
1434 | if (s->prim_channels + !!s->lfe > 2 && | |
1435 | s->avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) { | |
1436 | dca_downmix(s->samples_chanptr, s->amode, !!s->lfe, s->downmix_coef, | |
1437 | s->channel_order_tab); | |
1438 | } | |
1439 | ||
1440 | return 0; | |
1441 | } | |
1442 | ||
2ba45a60 DM |
1443 | static int dca_subframe_footer(DCAContext *s, int base_channel) |
1444 | { | |
1445 | int in, out, aux_data_count, aux_data_end, reserved; | |
1446 | uint32_t nsyncaux; | |
1447 | ||
1448 | /* | |
1449 | * Unpack optional information | |
1450 | */ | |
1451 | ||
1452 | /* presumably optional information only appears in the core? */ | |
1453 | if (!base_channel) { | |
1454 | if (s->timestamp) | |
1455 | skip_bits_long(&s->gb, 32); | |
1456 | ||
1457 | if (s->aux_data) { | |
1458 | aux_data_count = get_bits(&s->gb, 6); | |
1459 | ||
1460 | // align (32-bit) | |
1461 | skip_bits_long(&s->gb, (-get_bits_count(&s->gb)) & 31); | |
1462 | ||
1463 | aux_data_end = 8 * aux_data_count + get_bits_count(&s->gb); | |
1464 | ||
1465 | if ((nsyncaux = get_bits_long(&s->gb, 32)) != DCA_NSYNCAUX) { | |
1466 | av_log(s->avctx, AV_LOG_ERROR, "nSYNCAUX mismatch %#"PRIx32"\n", | |
1467 | nsyncaux); | |
1468 | return AVERROR_INVALIDDATA; | |
1469 | } | |
1470 | ||
1471 | if (get_bits1(&s->gb)) { // bAUXTimeStampFlag | |
1472 | avpriv_request_sample(s->avctx, | |
1473 | "Auxiliary Decode Time Stamp Flag"); | |
1474 | // align (4-bit) | |
1475 | skip_bits(&s->gb, (-get_bits_count(&s->gb)) & 4); | |
1476 | // 44 bits: nMSByte (8), nMarker (4), nLSByte (28), nMarker (4) | |
1477 | skip_bits_long(&s->gb, 44); | |
1478 | } | |
1479 | ||
1480 | if ((s->core_downmix = get_bits1(&s->gb))) { | |
1481 | int am = get_bits(&s->gb, 3); | |
1482 | switch (am) { | |
1483 | case 0: | |
1484 | s->core_downmix_amode = DCA_MONO; | |
1485 | break; | |
1486 | case 1: | |
1487 | s->core_downmix_amode = DCA_STEREO; | |
1488 | break; | |
1489 | case 2: | |
1490 | s->core_downmix_amode = DCA_STEREO_TOTAL; | |
1491 | break; | |
1492 | case 3: | |
1493 | s->core_downmix_amode = DCA_3F; | |
1494 | break; | |
1495 | case 4: | |
1496 | s->core_downmix_amode = DCA_2F1R; | |
1497 | break; | |
1498 | case 5: | |
1499 | s->core_downmix_amode = DCA_2F2R; | |
1500 | break; | |
1501 | case 6: | |
1502 | s->core_downmix_amode = DCA_3F1R; | |
1503 | break; | |
1504 | default: | |
1505 | av_log(s->avctx, AV_LOG_ERROR, | |
1506 | "Invalid mode %d for embedded downmix coefficients\n", | |
1507 | am); | |
1508 | return AVERROR_INVALIDDATA; | |
1509 | } | |
1510 | for (out = 0; out < dca_channels[s->core_downmix_amode]; out++) { | |
1511 | for (in = 0; in < s->prim_channels + !!s->lfe; in++) { | |
1512 | uint16_t tmp = get_bits(&s->gb, 9); | |
1513 | if ((tmp & 0xFF) > 241) { | |
1514 | av_log(s->avctx, AV_LOG_ERROR, | |
1515 | "Invalid downmix coefficient code %"PRIu16"\n", | |
1516 | tmp); | |
1517 | return AVERROR_INVALIDDATA; | |
1518 | } | |
1519 | s->core_downmix_codes[in][out] = tmp; | |
1520 | } | |
1521 | } | |
1522 | } | |
1523 | ||
1524 | align_get_bits(&s->gb); // byte align | |
1525 | skip_bits(&s->gb, 16); // nAUXCRC16 | |
1526 | ||
1527 | // additional data (reserved, cf. ETSI TS 102 114 V1.4.1) | |
1528 | if ((reserved = (aux_data_end - get_bits_count(&s->gb))) < 0) { | |
f6fa7814 DM |
1529 | av_log(s->avctx, AV_LOG_ERROR, |
1530 | "Overread auxiliary data by %d bits\n", -reserved); | |
2ba45a60 DM |
1531 | return AVERROR_INVALIDDATA; |
1532 | } else if (reserved) { | |
1533 | avpriv_request_sample(s->avctx, | |
1534 | "Core auxiliary data reserved content"); | |
1535 | skip_bits_long(&s->gb, reserved); | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | if (s->crc_present && s->dynrange) | |
1540 | get_bits(&s->gb, 16); | |
1541 | } | |
1542 | ||
1543 | return 0; | |
1544 | } | |
1545 | ||
1546 | /** | |
1547 | * Decode a dca frame block | |
1548 | * | |
1549 | * @param s pointer to the DCAContext | |
1550 | */ | |
1551 | ||
1552 | static int dca_decode_block(DCAContext *s, int base_channel, int block_index) | |
1553 | { | |
1554 | int ret; | |
1555 | ||
1556 | /* Sanity check */ | |
1557 | if (s->current_subframe >= s->subframes) { | |
1558 | av_log(s->avctx, AV_LOG_DEBUG, "check failed: %i>%i", | |
1559 | s->current_subframe, s->subframes); | |
1560 | return AVERROR_INVALIDDATA; | |
1561 | } | |
1562 | ||
1563 | if (!s->current_subsubframe) { | |
1564 | #ifdef TRACE | |
1565 | av_log(s->avctx, AV_LOG_DEBUG, "DSYNC dca_subframe_header\n"); | |
1566 | #endif | |
1567 | /* Read subframe header */ | |
1568 | if ((ret = dca_subframe_header(s, base_channel, block_index))) | |
1569 | return ret; | |
1570 | } | |
1571 | ||
1572 | /* Read subsubframe */ | |
1573 | #ifdef TRACE | |
1574 | av_log(s->avctx, AV_LOG_DEBUG, "DSYNC dca_subsubframe\n"); | |
1575 | #endif | |
1576 | if ((ret = dca_subsubframe(s, base_channel, block_index))) | |
1577 | return ret; | |
1578 | ||
1579 | /* Update state */ | |
1580 | s->current_subsubframe++; | |
1581 | if (s->current_subsubframe >= s->subsubframes[s->current_subframe]) { | |
1582 | s->current_subsubframe = 0; | |
1583 | s->current_subframe++; | |
1584 | } | |
1585 | if (s->current_subframe >= s->subframes) { | |
1586 | #ifdef TRACE | |
1587 | av_log(s->avctx, AV_LOG_DEBUG, "DSYNC dca_subframe_footer\n"); | |
1588 | #endif | |
1589 | /* Read subframe footer */ | |
1590 | if ((ret = dca_subframe_footer(s, base_channel))) | |
1591 | return ret; | |
1592 | } | |
1593 | ||
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | /** | |
1598 | * Return the number of channels in an ExSS speaker mask (HD) | |
1599 | */ | |
1600 | static int dca_exss_mask2count(int mask) | |
1601 | { | |
1602 | /* count bits that mean speaker pairs twice */ | |
1603 | return av_popcount(mask) + | |
1604 | av_popcount(mask & (DCA_EXSS_CENTER_LEFT_RIGHT | | |
1605 | DCA_EXSS_FRONT_LEFT_RIGHT | | |
1606 | DCA_EXSS_FRONT_HIGH_LEFT_RIGHT | | |
1607 | DCA_EXSS_WIDE_LEFT_RIGHT | | |
1608 | DCA_EXSS_SIDE_LEFT_RIGHT | | |
1609 | DCA_EXSS_SIDE_HIGH_LEFT_RIGHT | | |
1610 | DCA_EXSS_SIDE_REAR_LEFT_RIGHT | | |
1611 | DCA_EXSS_REAR_LEFT_RIGHT | | |
1612 | DCA_EXSS_REAR_HIGH_LEFT_RIGHT)); | |
1613 | } | |
1614 | ||
1615 | /** | |
1616 | * Skip mixing coefficients of a single mix out configuration (HD) | |
1617 | */ | |
1618 | static void dca_exss_skip_mix_coeffs(GetBitContext *gb, int channels, int out_ch) | |
1619 | { | |
1620 | int i; | |
1621 | ||
1622 | for (i = 0; i < channels; i++) { | |
1623 | int mix_map_mask = get_bits(gb, out_ch); | |
1624 | int num_coeffs = av_popcount(mix_map_mask); | |
1625 | skip_bits_long(gb, num_coeffs * 6); | |
1626 | } | |
1627 | } | |
1628 | ||
1629 | /** | |
1630 | * Parse extension substream asset header (HD) | |
1631 | */ | |
1632 | static int dca_exss_parse_asset_header(DCAContext *s) | |
1633 | { | |
1634 | int header_pos = get_bits_count(&s->gb); | |
1635 | int header_size; | |
1636 | int channels = 0; | |
1637 | int embedded_stereo = 0; | |
1638 | int embedded_6ch = 0; | |
1639 | int drc_code_present; | |
f6fa7814 | 1640 | int extensions_mask = 0; |
2ba45a60 DM |
1641 | int i, j; |
1642 | ||
1643 | if (get_bits_left(&s->gb) < 16) | |
1644 | return -1; | |
1645 | ||
1646 | /* We will parse just enough to get to the extensions bitmask with which | |
1647 | * we can set the profile value. */ | |
1648 | ||
1649 | header_size = get_bits(&s->gb, 9) + 1; | |
1650 | skip_bits(&s->gb, 3); // asset index | |
1651 | ||
1652 | if (s->static_fields) { | |
1653 | if (get_bits1(&s->gb)) | |
1654 | skip_bits(&s->gb, 4); // asset type descriptor | |
1655 | if (get_bits1(&s->gb)) | |
1656 | skip_bits_long(&s->gb, 24); // language descriptor | |
1657 | ||
1658 | if (get_bits1(&s->gb)) { | |
1659 | /* How can one fit 1024 bytes of text here if the maximum value | |
1660 | * for the asset header size field above was 512 bytes? */ | |
1661 | int text_length = get_bits(&s->gb, 10) + 1; | |
1662 | if (get_bits_left(&s->gb) < text_length * 8) | |
1663 | return -1; | |
1664 | skip_bits_long(&s->gb, text_length * 8); // info text | |
1665 | } | |
1666 | ||
1667 | skip_bits(&s->gb, 5); // bit resolution - 1 | |
1668 | skip_bits(&s->gb, 4); // max sample rate code | |
1669 | channels = get_bits(&s->gb, 8) + 1; | |
1670 | ||
1671 | if (get_bits1(&s->gb)) { // 1-to-1 channels to speakers | |
1672 | int spkr_remap_sets; | |
1673 | int spkr_mask_size = 16; | |
1674 | int num_spkrs[7]; | |
1675 | ||
1676 | if (channels > 2) | |
1677 | embedded_stereo = get_bits1(&s->gb); | |
1678 | if (channels > 6) | |
1679 | embedded_6ch = get_bits1(&s->gb); | |
1680 | ||
1681 | if (get_bits1(&s->gb)) { | |
1682 | spkr_mask_size = (get_bits(&s->gb, 2) + 1) << 2; | |
1683 | skip_bits(&s->gb, spkr_mask_size); // spkr activity mask | |
1684 | } | |
1685 | ||
1686 | spkr_remap_sets = get_bits(&s->gb, 3); | |
1687 | ||
1688 | for (i = 0; i < spkr_remap_sets; i++) { | |
1689 | /* std layout mask for each remap set */ | |
1690 | num_spkrs[i] = dca_exss_mask2count(get_bits(&s->gb, spkr_mask_size)); | |
1691 | } | |
1692 | ||
1693 | for (i = 0; i < spkr_remap_sets; i++) { | |
1694 | int num_dec_ch_remaps = get_bits(&s->gb, 5) + 1; | |
1695 | if (get_bits_left(&s->gb) < 0) | |
1696 | return -1; | |
1697 | ||
1698 | for (j = 0; j < num_spkrs[i]; j++) { | |
1699 | int remap_dec_ch_mask = get_bits_long(&s->gb, num_dec_ch_remaps); | |
1700 | int num_dec_ch = av_popcount(remap_dec_ch_mask); | |
1701 | skip_bits_long(&s->gb, num_dec_ch * 5); // remap codes | |
1702 | } | |
1703 | } | |
2ba45a60 DM |
1704 | } else { |
1705 | skip_bits(&s->gb, 3); // representation type | |
1706 | } | |
1707 | } | |
1708 | ||
1709 | drc_code_present = get_bits1(&s->gb); | |
1710 | if (drc_code_present) | |
1711 | get_bits(&s->gb, 8); // drc code | |
1712 | ||
1713 | if (get_bits1(&s->gb)) | |
1714 | skip_bits(&s->gb, 5); // dialog normalization code | |
1715 | ||
1716 | if (drc_code_present && embedded_stereo) | |
1717 | get_bits(&s->gb, 8); // drc stereo code | |
1718 | ||
1719 | if (s->mix_metadata && get_bits1(&s->gb)) { | |
1720 | skip_bits(&s->gb, 1); // external mix | |
1721 | skip_bits(&s->gb, 6); // post mix gain code | |
1722 | ||
1723 | if (get_bits(&s->gb, 2) != 3) // mixer drc code | |
1724 | skip_bits(&s->gb, 3); // drc limit | |
1725 | else | |
1726 | skip_bits(&s->gb, 8); // custom drc code | |
1727 | ||
1728 | if (get_bits1(&s->gb)) // channel specific scaling | |
1729 | for (i = 0; i < s->num_mix_configs; i++) | |
1730 | skip_bits_long(&s->gb, s->mix_config_num_ch[i] * 6); // scale codes | |
1731 | else | |
1732 | skip_bits_long(&s->gb, s->num_mix_configs * 6); // scale codes | |
1733 | ||
1734 | for (i = 0; i < s->num_mix_configs; i++) { | |
1735 | if (get_bits_left(&s->gb) < 0) | |
1736 | return -1; | |
1737 | dca_exss_skip_mix_coeffs(&s->gb, channels, s->mix_config_num_ch[i]); | |
1738 | if (embedded_6ch) | |
1739 | dca_exss_skip_mix_coeffs(&s->gb, 6, s->mix_config_num_ch[i]); | |
1740 | if (embedded_stereo) | |
1741 | dca_exss_skip_mix_coeffs(&s->gb, 2, s->mix_config_num_ch[i]); | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | switch (get_bits(&s->gb, 2)) { | |
f6fa7814 DM |
1746 | case 0: |
1747 | extensions_mask = get_bits(&s->gb, 12); | |
1748 | break; | |
1749 | case 1: | |
1750 | extensions_mask = DCA_EXT_EXSS_XLL; | |
1751 | break; | |
1752 | case 2: | |
1753 | extensions_mask = DCA_EXT_EXSS_LBR; | |
1754 | break; | |
1755 | case 3: | |
1756 | extensions_mask = 0; /* aux coding */ | |
1757 | break; | |
2ba45a60 DM |
1758 | } |
1759 | ||
1760 | /* not parsed further, we were only interested in the extensions mask */ | |
1761 | ||
1762 | if (get_bits_left(&s->gb) < 0) | |
1763 | return -1; | |
1764 | ||
1765 | if (get_bits_count(&s->gb) - header_pos > header_size * 8) { | |
1766 | av_log(s->avctx, AV_LOG_WARNING, "Asset header size mismatch.\n"); | |
1767 | return -1; | |
1768 | } | |
1769 | skip_bits_long(&s->gb, header_pos + header_size * 8 - get_bits_count(&s->gb)); | |
1770 | ||
1771 | if (extensions_mask & DCA_EXT_EXSS_XLL) | |
1772 | s->profile = FF_PROFILE_DTS_HD_MA; | |
1773 | else if (extensions_mask & (DCA_EXT_EXSS_XBR | DCA_EXT_EXSS_X96 | | |
1774 | DCA_EXT_EXSS_XXCH)) | |
1775 | s->profile = FF_PROFILE_DTS_HD_HRA; | |
1776 | ||
1777 | if (!(extensions_mask & DCA_EXT_CORE)) | |
1778 | av_log(s->avctx, AV_LOG_WARNING, "DTS core detection mismatch.\n"); | |
1779 | if ((extensions_mask & DCA_CORE_EXTS) != s->core_ext_mask) | |
1780 | av_log(s->avctx, AV_LOG_WARNING, | |
1781 | "DTS extensions detection mismatch (%d, %d)\n", | |
1782 | extensions_mask & DCA_CORE_EXTS, s->core_ext_mask); | |
1783 | ||
1784 | return 0; | |
1785 | } | |
1786 | ||
1787 | static int dca_xbr_parse_frame(DCAContext *s) | |
1788 | { | |
1789 | int scale_table_high[DCA_CHSET_CHANS_MAX][DCA_SUBBANDS][2]; | |
1790 | int active_bands[DCA_CHSETS_MAX][DCA_CHSET_CHANS_MAX]; | |
1791 | int abits_high[DCA_CHSET_CHANS_MAX][DCA_SUBBANDS]; | |
1792 | int anctemp[DCA_CHSET_CHANS_MAX]; | |
1793 | int chset_fsize[DCA_CHSETS_MAX]; | |
1794 | int n_xbr_ch[DCA_CHSETS_MAX]; | |
1795 | int hdr_size, num_chsets, xbr_tmode, hdr_pos; | |
1796 | int i, j, k, l, chset, chan_base; | |
1797 | ||
1798 | av_log(s->avctx, AV_LOG_DEBUG, "DTS-XBR: decoding XBR extension\n"); | |
1799 | ||
1800 | /* get bit position of sync header */ | |
1801 | hdr_pos = get_bits_count(&s->gb) - 32; | |
1802 | ||
1803 | hdr_size = get_bits(&s->gb, 6) + 1; | |
1804 | num_chsets = get_bits(&s->gb, 2) + 1; | |
1805 | ||
1806 | for(i = 0; i < num_chsets; i++) | |
1807 | chset_fsize[i] = get_bits(&s->gb, 14) + 1; | |
1808 | ||
1809 | xbr_tmode = get_bits1(&s->gb); | |
1810 | ||
1811 | for(i = 0; i < num_chsets; i++) { | |
1812 | n_xbr_ch[i] = get_bits(&s->gb, 3) + 1; | |
1813 | k = get_bits(&s->gb, 2) + 5; | |
1814 | for(j = 0; j < n_xbr_ch[i]; j++) | |
1815 | active_bands[i][j] = get_bits(&s->gb, k) + 1; | |
1816 | } | |
1817 | ||
1818 | /* skip to the end of the header */ | |
1819 | i = get_bits_count(&s->gb); | |
1820 | if(hdr_pos + hdr_size * 8 > i) | |
1821 | skip_bits_long(&s->gb, hdr_pos + hdr_size * 8 - i); | |
1822 | ||
1823 | /* loop over the channel data sets */ | |
1824 | /* only decode as many channels as we've decoded base data for */ | |
1825 | for(chset = 0, chan_base = 0; | |
1826 | chset < num_chsets && chan_base + n_xbr_ch[chset] <= s->prim_channels; | |
1827 | chan_base += n_xbr_ch[chset++]) { | |
1828 | int start_posn = get_bits_count(&s->gb); | |
1829 | int subsubframe = 0; | |
1830 | int subframe = 0; | |
1831 | ||
1832 | /* loop over subframes */ | |
1833 | for (k = 0; k < (s->sample_blocks / 8); k++) { | |
1834 | /* parse header if we're on first subsubframe of a block */ | |
1835 | if(subsubframe == 0) { | |
1836 | /* Parse subframe header */ | |
1837 | for(i = 0; i < n_xbr_ch[chset]; i++) { | |
1838 | anctemp[i] = get_bits(&s->gb, 2) + 2; | |
1839 | } | |
1840 | ||
1841 | for(i = 0; i < n_xbr_ch[chset]; i++) { | |
1842 | get_array(&s->gb, abits_high[i], active_bands[chset][i], anctemp[i]); | |
1843 | } | |
1844 | ||
1845 | for(i = 0; i < n_xbr_ch[chset]; i++) { | |
1846 | anctemp[i] = get_bits(&s->gb, 3); | |
1847 | if(anctemp[i] < 1) { | |
1848 | av_log(s->avctx, AV_LOG_ERROR, "DTS-XBR: SYNC ERROR\n"); | |
1849 | return AVERROR_INVALIDDATA; | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | /* generate scale factors */ | |
1854 | for(i = 0; i < n_xbr_ch[chset]; i++) { | |
1855 | const uint32_t *scale_table; | |
1856 | int nbits; | |
1857 | ||
1858 | if (s->scalefactor_huffman[chan_base+i] == 6) { | |
1859 | scale_table = scale_factor_quant7; | |
1860 | } else { | |
1861 | scale_table = scale_factor_quant6; | |
1862 | } | |
1863 | ||
1864 | nbits = anctemp[i]; | |
1865 | ||
1866 | for(j = 0; j < active_bands[chset][i]; j++) { | |
1867 | if(abits_high[i][j] > 0) { | |
1868 | scale_table_high[i][j][0] = | |
1869 | scale_table[get_bits(&s->gb, nbits)]; | |
1870 | ||
1871 | if(xbr_tmode && s->transition_mode[i][j]) { | |
1872 | scale_table_high[i][j][1] = | |
1873 | scale_table[get_bits(&s->gb, nbits)]; | |
1874 | } | |
1875 | } | |
1876 | } | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | /* decode audio array for this block */ | |
1881 | for(i = 0; i < n_xbr_ch[chset]; i++) { | |
1882 | for(j = 0; j < active_bands[chset][i]; j++) { | |
1883 | const int xbr_abits = abits_high[i][j]; | |
1884 | const float quant_step_size = lossless_quant_d[xbr_abits]; | |
1885 | const int sfi = xbr_tmode && s->transition_mode[i][j] && subsubframe >= s->transition_mode[i][j]; | |
1886 | const float rscale = quant_step_size * scale_table_high[i][j][sfi]; | |
1887 | float *subband_samples = s->subband_samples[k][chan_base+i][j]; | |
1888 | int block[8]; | |
1889 | ||
1890 | if(xbr_abits <= 0) | |
1891 | continue; | |
1892 | ||
1893 | if(xbr_abits > 7) { | |
1894 | get_array(&s->gb, block, 8, xbr_abits - 3); | |
1895 | } else { | |
1896 | int block_code1, block_code2, size, levels, err; | |
1897 | ||
1898 | size = abits_sizes[xbr_abits - 1]; | |
1899 | levels = abits_levels[xbr_abits - 1]; | |
1900 | ||
1901 | block_code1 = get_bits(&s->gb, size); | |
1902 | block_code2 = get_bits(&s->gb, size); | |
1903 | err = decode_blockcodes(block_code1, block_code2, | |
1904 | levels, block); | |
1905 | if (err) { | |
1906 | av_log(s->avctx, AV_LOG_ERROR, | |
1907 | "ERROR: DTS-XBR: block code look-up failed\n"); | |
1908 | return AVERROR_INVALIDDATA; | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | /* scale & sum into subband */ | |
1913 | for(l = 0; l < 8; l++) | |
1914 | subband_samples[l] += (float)block[l] * rscale; | |
1915 | } | |
1916 | } | |
1917 | ||
1918 | /* check DSYNC marker */ | |
1919 | if(s->aspf || subsubframe == s->subsubframes[subframe] - 1) { | |
1920 | if(get_bits(&s->gb, 16) != 0xffff) { | |
1921 | av_log(s->avctx, AV_LOG_ERROR, "DTS-XBR: Didn't get subframe DSYNC\n"); | |
1922 | return AVERROR_INVALIDDATA; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | /* advance sub-sub-frame index */ | |
1927 | if(++subsubframe >= s->subsubframes[subframe]) { | |
1928 | subsubframe = 0; | |
1929 | subframe++; | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | /* skip to next channel set */ | |
1934 | i = get_bits_count(&s->gb); | |
1935 | if(start_posn + chset_fsize[chset] * 8 != i) { | |
1936 | j = start_posn + chset_fsize[chset] * 8 - i; | |
1937 | if(j < 0 || j >= 8) | |
1938 | av_log(s->avctx, AV_LOG_ERROR, "DTS-XBR: end of channel set," | |
1939 | " skipping further than expected (%d bits)\n", j); | |
1940 | skip_bits_long(&s->gb, j); | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | return 0; | |
1945 | } | |
1946 | ||
1947 | /* parse initial header for XXCH and dump details */ | |
1948 | static int dca_xxch_decode_frame(DCAContext *s) | |
1949 | { | |
1950 | int hdr_size, spkmsk_bits, num_chsets, core_spk, hdr_pos; | |
1951 | int i, chset, base_channel, chstart, fsize[8]; | |
1952 | ||
1953 | /* assume header word has already been parsed */ | |
1954 | hdr_pos = get_bits_count(&s->gb) - 32; | |
1955 | hdr_size = get_bits(&s->gb, 6) + 1; | |
1956 | /*chhdr_crc =*/ skip_bits1(&s->gb); | |
1957 | spkmsk_bits = get_bits(&s->gb, 5) + 1; | |
1958 | num_chsets = get_bits(&s->gb, 2) + 1; | |
1959 | ||
1960 | for (i = 0; i < num_chsets; i++) | |
1961 | fsize[i] = get_bits(&s->gb, 14) + 1; | |
1962 | ||
1963 | core_spk = get_bits(&s->gb, spkmsk_bits); | |
1964 | s->xxch_core_spkmask = core_spk; | |
1965 | s->xxch_nbits_spk_mask = spkmsk_bits; | |
1966 | s->xxch_dmix_embedded = 0; | |
1967 | ||
1968 | /* skip to the end of the header */ | |
1969 | i = get_bits_count(&s->gb); | |
1970 | if (hdr_pos + hdr_size * 8 > i) | |
1971 | skip_bits_long(&s->gb, hdr_pos + hdr_size * 8 - i); | |
1972 | ||
1973 | for (chset = 0; chset < num_chsets; chset++) { | |
1974 | chstart = get_bits_count(&s->gb); | |
1975 | base_channel = s->prim_channels; | |
1976 | s->xxch_chset = chset; | |
1977 | ||
1978 | /* XXCH and Core headers differ, see 6.4.2 "XXCH Channel Set Header" vs. | |
1979 | 5.3.2 "Primary Audio Coding Header", DTS Spec 1.3.1 */ | |
1980 | dca_parse_audio_coding_header(s, base_channel, 1); | |
1981 | ||
1982 | /* decode channel data */ | |
1983 | for (i = 0; i < (s->sample_blocks / 8); i++) { | |
1984 | if (dca_decode_block(s, base_channel, i)) { | |
1985 | av_log(s->avctx, AV_LOG_ERROR, | |
1986 | "Error decoding DTS-XXCH extension\n"); | |
1987 | continue; | |
1988 | } | |
1989 | } | |
1990 | ||
1991 | /* skip to end of this section */ | |
1992 | i = get_bits_count(&s->gb); | |
1993 | if (chstart + fsize[chset] * 8 > i) | |
1994 | skip_bits_long(&s->gb, chstart + fsize[chset] * 8 - i); | |
1995 | } | |
1996 | s->xxch_chset = num_chsets; | |
1997 | ||
1998 | return 0; | |
1999 | } | |
2000 | ||
2001 | /** | |
2002 | * Parse extension substream header (HD) | |
2003 | */ | |
2004 | static void dca_exss_parse_header(DCAContext *s) | |
2005 | { | |
2006 | int asset_size[8]; | |
2007 | int ss_index; | |
2008 | int blownup; | |
2009 | int num_audiop = 1; | |
2010 | int num_assets = 1; | |
2011 | int active_ss_mask[8]; | |
2012 | int i, j; | |
2013 | int start_posn; | |
2014 | int hdrsize; | |
2015 | uint32_t mkr; | |
2016 | ||
2017 | if (get_bits_left(&s->gb) < 52) | |
2018 | return; | |
2019 | ||
2020 | start_posn = get_bits_count(&s->gb) - 32; | |
2021 | ||
2022 | skip_bits(&s->gb, 8); // user data | |
2023 | ss_index = get_bits(&s->gb, 2); | |
2024 | ||
2025 | blownup = get_bits1(&s->gb); | |
2026 | hdrsize = get_bits(&s->gb, 8 + 4 * blownup) + 1; // header_size | |
2027 | skip_bits(&s->gb, 16 + 4 * blownup); // hd_size | |
2028 | ||
2029 | s->static_fields = get_bits1(&s->gb); | |
2030 | if (s->static_fields) { | |
2031 | skip_bits(&s->gb, 2); // reference clock code | |
2032 | skip_bits(&s->gb, 3); // frame duration code | |
2033 | ||
2034 | if (get_bits1(&s->gb)) | |
2035 | skip_bits_long(&s->gb, 36); // timestamp | |
2036 | ||
2037 | /* a single stream can contain multiple audio assets that can be | |
2038 | * combined to form multiple audio presentations */ | |
2039 | ||
2040 | num_audiop = get_bits(&s->gb, 3) + 1; | |
2041 | if (num_audiop > 1) { | |
2042 | avpriv_request_sample(s->avctx, | |
2043 | "Multiple DTS-HD audio presentations"); | |
2044 | /* ignore such streams for now */ | |
2045 | return; | |
2046 | } | |
2047 | ||
2048 | num_assets = get_bits(&s->gb, 3) + 1; | |
2049 | if (num_assets > 1) { | |
2050 | avpriv_request_sample(s->avctx, "Multiple DTS-HD audio assets"); | |
2051 | /* ignore such streams for now */ | |
2052 | return; | |
2053 | } | |
2054 | ||
2055 | for (i = 0; i < num_audiop; i++) | |
2056 | active_ss_mask[i] = get_bits(&s->gb, ss_index + 1); | |
2057 | ||
2058 | for (i = 0; i < num_audiop; i++) | |
2059 | for (j = 0; j <= ss_index; j++) | |
2060 | if (active_ss_mask[i] & (1 << j)) | |
2061 | skip_bits(&s->gb, 8); // active asset mask | |
2062 | ||
2063 | s->mix_metadata = get_bits1(&s->gb); | |
2064 | if (s->mix_metadata) { | |
2065 | int mix_out_mask_size; | |
2066 | ||
2067 | skip_bits(&s->gb, 2); // adjustment level | |
2068 | mix_out_mask_size = (get_bits(&s->gb, 2) + 1) << 2; | |
2069 | s->num_mix_configs = get_bits(&s->gb, 2) + 1; | |
2070 | ||
2071 | for (i = 0; i < s->num_mix_configs; i++) { | |
2072 | int mix_out_mask = get_bits(&s->gb, mix_out_mask_size); | |
2073 | s->mix_config_num_ch[i] = dca_exss_mask2count(mix_out_mask); | |
2074 | } | |
2075 | } | |
2076 | } | |
2077 | ||
2078 | av_assert0(num_assets > 0); // silence a warning | |
2079 | ||
2080 | for (i = 0; i < num_assets; i++) | |
2081 | asset_size[i] = get_bits_long(&s->gb, 16 + 4 * blownup); | |
2082 | ||
2083 | for (i = 0; i < num_assets; i++) { | |
2084 | if (dca_exss_parse_asset_header(s)) | |
2085 | return; | |
2086 | } | |
2087 | ||
2088 | /* not parsed further, we were only interested in the extensions mask | |
2089 | * from the asset header */ | |
2090 | ||
2091 | j = get_bits_count(&s->gb); | |
2092 | if (start_posn + hdrsize * 8 > j) | |
2093 | skip_bits_long(&s->gb, start_posn + hdrsize * 8 - j); | |
2094 | ||
2095 | for (i = 0; i < num_assets; i++) { | |
2096 | start_posn = get_bits_count(&s->gb); | |
2097 | mkr = get_bits_long(&s->gb, 32); | |
2098 | ||
2099 | /* parse extensions that we know about */ | |
2100 | if (mkr == 0x655e315e) { | |
2101 | dca_xbr_parse_frame(s); | |
2102 | } else if (mkr == 0x47004a03) { | |
2103 | dca_xxch_decode_frame(s); | |
2104 | s->core_ext_mask |= DCA_EXT_XXCH; /* xxx use for chan reordering */ | |
2105 | } else { | |
2106 | av_log(s->avctx, AV_LOG_DEBUG, | |
2107 | "DTS-ExSS: unknown marker = 0x%08x\n", mkr); | |
2108 | } | |
2109 | ||
2110 | /* skip to end of block */ | |
2111 | j = get_bits_count(&s->gb); | |
2112 | if (start_posn + asset_size[i] * 8 > j) | |
2113 | skip_bits_long(&s->gb, start_posn + asset_size[i] * 8 - j); | |
2114 | } | |
2115 | } | |
2116 | ||
2117 | static float dca_dmix_code(unsigned code) | |
2118 | { | |
2119 | int sign = (code >> 8) - 1; | |
2120 | code &= 0xff; | |
2121 | return ((dca_dmixtable[code] ^ sign) - sign) * (1.0 / (1 << 15)); | |
2122 | } | |
2123 | ||
2124 | /** | |
2125 | * Main frame decoding function | |
2126 | * FIXME add arguments | |
2127 | */ | |
2128 | static int dca_decode_frame(AVCodecContext *avctx, void *data, | |
2129 | int *got_frame_ptr, AVPacket *avpkt) | |
2130 | { | |
2131 | AVFrame *frame = data; | |
2132 | const uint8_t *buf = avpkt->data; | |
f6fa7814 | 2133 | int buf_size = avpkt->size; |
2ba45a60 DM |
2134 | int channel_mask; |
2135 | int channel_layout; | |
2136 | int lfe_samples; | |
2137 | int num_core_channels = 0; | |
2138 | int i, ret; | |
2139 | float **samples_flt; | |
2140 | float *src_chan; | |
2141 | float *dst_chan; | |
2142 | DCAContext *s = avctx->priv_data; | |
2143 | int core_ss_end; | |
2144 | int channels, full_channels; | |
2145 | float scale; | |
2146 | int achan; | |
2147 | int chset; | |
2148 | int mask; | |
2149 | int lavc; | |
2150 | int posn; | |
2151 | int j, k; | |
2152 | int endch; | |
2153 | ||
2154 | s->xch_present = 0; | |
2155 | ||
2156 | s->dca_buffer_size = avpriv_dca_convert_bitstream(buf, buf_size, s->dca_buffer, | |
2157 | DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE); | |
2158 | if (s->dca_buffer_size == AVERROR_INVALIDDATA) { | |
2159 | av_log(avctx, AV_LOG_ERROR, "Not a valid DCA frame\n"); | |
2160 | return AVERROR_INVALIDDATA; | |
2161 | } | |
2162 | ||
2163 | if ((ret = dca_parse_frame_header(s)) < 0) { | |
f6fa7814 | 2164 | // seems like the frame is corrupt, try with the next one |
2ba45a60 DM |
2165 | return ret; |
2166 | } | |
f6fa7814 | 2167 | // set AVCodec values with parsed data |
2ba45a60 DM |
2168 | avctx->sample_rate = s->sample_rate; |
2169 | avctx->bit_rate = s->bit_rate; | |
2170 | ||
2171 | s->profile = FF_PROFILE_DTS; | |
2172 | ||
2173 | for (i = 0; i < (s->sample_blocks / 8); i++) { | |
2174 | if ((ret = dca_decode_block(s, 0, i))) { | |
2175 | av_log(avctx, AV_LOG_ERROR, "error decoding block\n"); | |
2176 | return ret; | |
2177 | } | |
2178 | } | |
2179 | ||
2180 | /* record number of core channels incase less than max channels are requested */ | |
2181 | num_core_channels = s->prim_channels; | |
2182 | ||
2183 | if (s->prim_channels + !!s->lfe > 2 && | |
2184 | avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) { | |
2185 | /* Stereo downmix coefficients | |
2186 | * | |
2187 | * The decoder can only downmix to 2-channel, so we need to ensure | |
2188 | * embedded downmix coefficients are actually targeting 2-channel. | |
2189 | */ | |
2190 | if (s->core_downmix && (s->core_downmix_amode == DCA_STEREO || | |
2191 | s->core_downmix_amode == DCA_STEREO_TOTAL)) { | |
2192 | for (i = 0; i < num_core_channels + !!s->lfe; i++) { | |
2193 | /* Range checked earlier */ | |
2194 | s->downmix_coef[i][0] = dca_dmix_code(s->core_downmix_codes[i][0]); | |
2195 | s->downmix_coef[i][1] = dca_dmix_code(s->core_downmix_codes[i][1]); | |
2196 | } | |
2197 | s->output = s->core_downmix_amode; | |
2198 | } else { | |
2199 | int am = s->amode & DCA_CHANNEL_MASK; | |
2200 | if (am >= FF_ARRAY_ELEMS(dca_default_coeffs)) { | |
2201 | av_log(s->avctx, AV_LOG_ERROR, | |
2202 | "Invalid channel mode %d\n", am); | |
2203 | return AVERROR_INVALIDDATA; | |
2204 | } | |
2205 | if (num_core_channels + !!s->lfe > | |
2206 | FF_ARRAY_ELEMS(dca_default_coeffs[0])) { | |
2207 | avpriv_request_sample(s->avctx, "Downmixing %d channels", | |
2208 | s->prim_channels + !!s->lfe); | |
2209 | return AVERROR_PATCHWELCOME; | |
2210 | } | |
2211 | for (i = 0; i < num_core_channels + !!s->lfe; i++) { | |
2212 | s->downmix_coef[i][0] = dca_default_coeffs[am][i][0]; | |
2213 | s->downmix_coef[i][1] = dca_default_coeffs[am][i][1]; | |
2214 | } | |
2215 | } | |
2216 | av_dlog(s->avctx, "Stereo downmix coeffs:\n"); | |
2217 | for (i = 0; i < num_core_channels + !!s->lfe; i++) { | |
2218 | av_dlog(s->avctx, "L, input channel %d = %f\n", i, | |
2219 | s->downmix_coef[i][0]); | |
2220 | av_dlog(s->avctx, "R, input channel %d = %f\n", i, | |
2221 | s->downmix_coef[i][1]); | |
2222 | } | |
2223 | av_dlog(s->avctx, "\n"); | |
2224 | } | |
2225 | ||
2226 | if (s->ext_coding) | |
2227 | s->core_ext_mask = dca_ext_audio_descr_mask[s->ext_descr]; | |
2228 | else | |
2229 | s->core_ext_mask = 0; | |
2230 | ||
2231 | core_ss_end = FFMIN(s->frame_size, s->dca_buffer_size) * 8; | |
2232 | ||
2233 | /* only scan for extensions if ext_descr was unknown or indicated a | |
2234 | * supported XCh extension */ | |
2235 | if (s->core_ext_mask < 0 || s->core_ext_mask & (DCA_EXT_XCH | DCA_EXT_XXCH)) { | |
2ba45a60 DM |
2236 | /* if ext_descr was unknown, clear s->core_ext_mask so that the |
2237 | * extensions scan can fill it up */ | |
2238 | s->core_ext_mask = FFMAX(s->core_ext_mask, 0); | |
2239 | ||
2240 | /* extensions start at 32-bit boundaries into bitstream */ | |
2241 | skip_bits_long(&s->gb, (-get_bits_count(&s->gb)) & 31); | |
2242 | ||
2243 | while (core_ss_end - get_bits_count(&s->gb) >= 32) { | |
2244 | uint32_t bits = get_bits_long(&s->gb, 32); | |
2245 | ||
2246 | switch (bits) { | |
2247 | case 0x5a5a5a5a: { | |
2248 | int ext_amode, xch_fsize; | |
2249 | ||
2250 | s->xch_base_channel = s->prim_channels; | |
2251 | ||
2252 | /* validate sync word using XCHFSIZE field */ | |
2253 | xch_fsize = show_bits(&s->gb, 10); | |
2254 | if ((s->frame_size != (get_bits_count(&s->gb) >> 3) - 4 + xch_fsize) && | |
2255 | (s->frame_size != (get_bits_count(&s->gb) >> 3) - 4 + xch_fsize + 1)) | |
2256 | continue; | |
2257 | ||
2258 | /* skip length-to-end-of-frame field for the moment */ | |
2259 | skip_bits(&s->gb, 10); | |
2260 | ||
2261 | s->core_ext_mask |= DCA_EXT_XCH; | |
2262 | ||
2263 | /* extension amode(number of channels in extension) should be 1 */ | |
2264 | /* AFAIK XCh is not used for more channels */ | |
2265 | if ((ext_amode = get_bits(&s->gb, 4)) != 1) { | |
f6fa7814 DM |
2266 | av_log(avctx, AV_LOG_ERROR, |
2267 | "XCh extension amode %d not supported!\n", | |
2268 | ext_amode); | |
2ba45a60 DM |
2269 | continue; |
2270 | } | |
2271 | ||
2272 | if (s->xch_base_channel < 2) { | |
2273 | avpriv_request_sample(avctx, "XCh with fewer than 2 base channels"); | |
2274 | continue; | |
2275 | } | |
2276 | ||
2277 | /* much like core primary audio coding header */ | |
2278 | dca_parse_audio_coding_header(s, s->xch_base_channel, 0); | |
2279 | ||
2280 | for (i = 0; i < (s->sample_blocks / 8); i++) | |
2281 | if ((ret = dca_decode_block(s, s->xch_base_channel, i))) { | |
2282 | av_log(avctx, AV_LOG_ERROR, "error decoding XCh extension\n"); | |
2283 | continue; | |
2284 | } | |
2285 | ||
2286 | s->xch_present = 1; | |
2287 | break; | |
2288 | } | |
2289 | case 0x47004a03: | |
2290 | /* XXCh: extended channels */ | |
2291 | /* usually found either in core or HD part in DTS-HD HRA streams, | |
2292 | * but not in DTS-ES which contains XCh extensions instead */ | |
2293 | s->core_ext_mask |= DCA_EXT_XXCH; | |
2294 | dca_xxch_decode_frame(s); | |
2295 | break; | |
2296 | ||
2297 | case 0x1d95f262: { | |
2298 | int fsize96 = show_bits(&s->gb, 12) + 1; | |
2299 | if (s->frame_size != (get_bits_count(&s->gb) >> 3) - 4 + fsize96) | |
2300 | continue; | |
2301 | ||
2302 | av_log(avctx, AV_LOG_DEBUG, "X96 extension found at %d bits\n", | |
2303 | get_bits_count(&s->gb)); | |
2304 | skip_bits(&s->gb, 12); | |
2305 | av_log(avctx, AV_LOG_DEBUG, "FSIZE96 = %d bytes\n", fsize96); | |
2306 | av_log(avctx, AV_LOG_DEBUG, "REVNO = %d\n", get_bits(&s->gb, 4)); | |
2307 | ||
2308 | s->core_ext_mask |= DCA_EXT_X96; | |
2309 | break; | |
2310 | } | |
2311 | } | |
2312 | ||
2313 | skip_bits_long(&s->gb, (-get_bits_count(&s->gb)) & 31); | |
2314 | } | |
2315 | } else { | |
2316 | /* no supported extensions, skip the rest of the core substream */ | |
2317 | skip_bits_long(&s->gb, core_ss_end - get_bits_count(&s->gb)); | |
2318 | } | |
2319 | ||
2320 | if (s->core_ext_mask & DCA_EXT_X96) | |
2321 | s->profile = FF_PROFILE_DTS_96_24; | |
2322 | else if (s->core_ext_mask & (DCA_EXT_XCH | DCA_EXT_XXCH)) | |
2323 | s->profile = FF_PROFILE_DTS_ES; | |
2324 | ||
2325 | /* check for ExSS (HD part) */ | |
2326 | if (s->dca_buffer_size - s->frame_size > 32 && | |
2327 | get_bits_long(&s->gb, 32) == DCA_HD_MARKER) | |
2328 | dca_exss_parse_header(s); | |
2329 | ||
2330 | avctx->profile = s->profile; | |
2331 | ||
2332 | full_channels = channels = s->prim_channels + !!s->lfe; | |
2333 | ||
2334 | /* If we have XXCH then the channel layout is managed differently */ | |
2335 | /* note that XLL will also have another way to do things */ | |
2336 | if (!(s->core_ext_mask & DCA_EXT_XXCH) | |
2337 | || (s->core_ext_mask & DCA_EXT_XXCH && avctx->request_channels > 0 | |
2338 | && avctx->request_channels | |
2339 | < num_core_channels + !!s->lfe + s->xxch_chset_nch[0])) | |
2340 | { /* xxx should also do MA extensions */ | |
2341 | if (s->amode < 16) { | |
2342 | avctx->channel_layout = dca_core_channel_layout[s->amode]; | |
2343 | ||
2344 | if (s->prim_channels + !!s->lfe > 2 && | |
2345 | avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) { | |
2346 | /* | |
2347 | * Neither the core's auxiliary data nor our default tables contain | |
2348 | * downmix coefficients for the additional channel coded in the XCh | |
2349 | * extension, so when we're doing a Stereo downmix, don't decode it. | |
2350 | */ | |
2351 | s->xch_disable = 1; | |
2352 | } | |
2353 | ||
2354 | #if FF_API_REQUEST_CHANNELS | |
2355 | FF_DISABLE_DEPRECATION_WARNINGS | |
2356 | if (s->xch_present && !s->xch_disable && | |
2357 | (!avctx->request_channels || | |
2358 | avctx->request_channels > num_core_channels + !!s->lfe)) { | |
2359 | FF_ENABLE_DEPRECATION_WARNINGS | |
2360 | #else | |
2361 | if (s->xch_present && !s->xch_disable) { | |
2362 | #endif | |
092a9121 DM |
2363 | if (avctx->channel_layout & AV_CH_BACK_CENTER) { |
2364 | avpriv_request_sample(avctx, "XCh with Back center channel"); | |
2365 | return AVERROR_INVALIDDATA; | |
2366 | } | |
2ba45a60 DM |
2367 | avctx->channel_layout |= AV_CH_BACK_CENTER; |
2368 | if (s->lfe) { | |
2369 | avctx->channel_layout |= AV_CH_LOW_FREQUENCY; | |
2370 | s->channel_order_tab = dca_channel_reorder_lfe_xch[s->amode]; | |
2371 | } else { | |
2372 | s->channel_order_tab = dca_channel_reorder_nolfe_xch[s->amode]; | |
2373 | } | |
2374 | if (s->channel_order_tab[s->xch_base_channel] < 0) | |
2375 | return AVERROR_INVALIDDATA; | |
2376 | } else { | |
f6fa7814 | 2377 | channels = num_core_channels + !!s->lfe; |
2ba45a60 DM |
2378 | s->xch_present = 0; /* disable further xch processing */ |
2379 | if (s->lfe) { | |
2380 | avctx->channel_layout |= AV_CH_LOW_FREQUENCY; | |
2381 | s->channel_order_tab = dca_channel_reorder_lfe[s->amode]; | |
2382 | } else | |
2383 | s->channel_order_tab = dca_channel_reorder_nolfe[s->amode]; | |
2384 | } | |
2385 | ||
2386 | if (channels > !!s->lfe && | |
2387 | s->channel_order_tab[channels - 1 - !!s->lfe] < 0) | |
2388 | return AVERROR_INVALIDDATA; | |
2389 | ||
2390 | if (av_get_channel_layout_nb_channels(avctx->channel_layout) != channels) { | |
2391 | av_log(avctx, AV_LOG_ERROR, "Number of channels %d mismatches layout %d\n", channels, av_get_channel_layout_nb_channels(avctx->channel_layout)); | |
2392 | return AVERROR_INVALIDDATA; | |
2393 | } | |
2394 | ||
2395 | if (num_core_channels + !!s->lfe > 2 && | |
2396 | avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) { | |
f6fa7814 DM |
2397 | channels = 2; |
2398 | s->output = s->prim_channels == 2 ? s->amode : DCA_STEREO; | |
2ba45a60 DM |
2399 | avctx->channel_layout = AV_CH_LAYOUT_STEREO; |
2400 | } | |
2401 | else if (avctx->request_channel_layout & AV_CH_LAYOUT_NATIVE) { | |
2402 | static const int8_t dca_channel_order_native[9] = { 0, 1, 2, 3, 4, 5, 6, 7, 8 }; | |
2403 | s->channel_order_tab = dca_channel_order_native; | |
2404 | } | |
2405 | s->lfe_index = dca_lfe_index[s->amode]; | |
2406 | } else { | |
2407 | av_log(avctx, AV_LOG_ERROR, | |
2408 | "Non standard configuration %d !\n", s->amode); | |
2409 | return AVERROR_INVALIDDATA; | |
2410 | } | |
2411 | ||
2412 | s->xxch_dmix_embedded = 0; | |
2413 | } else { | |
2414 | /* we only get here if an XXCH channel set can be added to the mix */ | |
2415 | channel_mask = s->xxch_core_spkmask; | |
2416 | ||
2417 | if (avctx->request_channels > 0 | |
2418 | && avctx->request_channels < s->prim_channels) { | |
2419 | channels = num_core_channels + !!s->lfe; | |
2420 | for (i = 0; i < s->xxch_chset && channels + s->xxch_chset_nch[i] | |
2421 | <= avctx->request_channels; i++) { | |
2422 | channels += s->xxch_chset_nch[i]; | |
2423 | channel_mask |= s->xxch_spk_masks[i]; | |
2424 | } | |
2425 | } else { | |
2426 | channels = s->prim_channels + !!s->lfe; | |
2427 | for (i = 0; i < s->xxch_chset; i++) { | |
2428 | channel_mask |= s->xxch_spk_masks[i]; | |
2429 | } | |
2430 | } | |
2431 | ||
2432 | /* Given the DTS spec'ed channel mask, generate an avcodec version */ | |
2433 | channel_layout = 0; | |
2434 | for (i = 0; i < s->xxch_nbits_spk_mask; ++i) { | |
2435 | if (channel_mask & (1 << i)) { | |
2436 | channel_layout |= map_xxch_to_native[i]; | |
2437 | } | |
2438 | } | |
2439 | ||
2440 | /* make sure that we have managed to get equivalent dts/avcodec channel | |
2441 | * masks in some sense -- unfortunately some channels could overlap */ | |
2442 | if (av_popcount(channel_mask) != av_popcount(channel_layout)) { | |
2443 | av_log(avctx, AV_LOG_DEBUG, | |
2444 | "DTS-XXCH: Inconsistent avcodec/dts channel layouts\n"); | |
2445 | return AVERROR_INVALIDDATA; | |
2446 | } | |
2447 | ||
2448 | avctx->channel_layout = channel_layout; | |
2449 | ||
2450 | if (!(avctx->request_channel_layout & AV_CH_LAYOUT_NATIVE)) { | |
2451 | /* Estimate DTS --> avcodec ordering table */ | |
2452 | for (chset = -1, j = 0; chset < s->xxch_chset; ++chset) { | |
2453 | mask = chset >= 0 ? s->xxch_spk_masks[chset] | |
2454 | : s->xxch_core_spkmask; | |
2455 | for (i = 0; i < s->xxch_nbits_spk_mask; i++) { | |
2456 | if (mask & ~(DCA_XXCH_LFE1 | DCA_XXCH_LFE2) & (1 << i)) { | |
2457 | lavc = map_xxch_to_native[i]; | |
2458 | posn = av_popcount(channel_layout & (lavc - 1)); | |
2459 | s->xxch_order_tab[j++] = posn; | |
2460 | } | |
2461 | } | |
2462 | ||
2463 | } | |
2464 | ||
2465 | s->lfe_index = av_popcount(channel_layout & (AV_CH_LOW_FREQUENCY-1)); | |
2466 | } else { /* native ordering */ | |
2467 | for (i = 0; i < channels; i++) | |
2468 | s->xxch_order_tab[i] = i; | |
2469 | ||
2470 | s->lfe_index = channels - 1; | |
2471 | } | |
2472 | ||
2473 | s->channel_order_tab = s->xxch_order_tab; | |
2474 | } | |
2475 | ||
2476 | if (avctx->channels != channels) { | |
2477 | if (avctx->channels) | |
2478 | av_log(avctx, AV_LOG_INFO, "Number of channels changed in DCA decoder (%d -> %d)\n", avctx->channels, channels); | |
2479 | avctx->channels = channels; | |
2480 | } | |
2481 | ||
2482 | /* get output buffer */ | |
2483 | frame->nb_samples = 256 * (s->sample_blocks / 8); | |
2484 | if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) | |
2485 | return ret; | |
f6fa7814 | 2486 | samples_flt = (float **) frame->extended_data; |
2ba45a60 DM |
2487 | |
2488 | /* allocate buffer for extra channels if downmixing */ | |
2489 | if (avctx->channels < full_channels) { | |
2490 | ret = av_samples_get_buffer_size(NULL, full_channels - channels, | |
2491 | frame->nb_samples, | |
2492 | avctx->sample_fmt, 0); | |
2493 | if (ret < 0) | |
2494 | return ret; | |
2495 | ||
2496 | av_fast_malloc(&s->extra_channels_buffer, | |
2497 | &s->extra_channels_buffer_size, ret); | |
2498 | if (!s->extra_channels_buffer) | |
2499 | return AVERROR(ENOMEM); | |
2500 | ||
f6fa7814 | 2501 | ret = av_samples_fill_arrays((uint8_t **) s->extra_channels, NULL, |
2ba45a60 DM |
2502 | s->extra_channels_buffer, |
2503 | full_channels - channels, | |
2504 | frame->nb_samples, avctx->sample_fmt, 0); | |
2505 | if (ret < 0) | |
2506 | return ret; | |
2507 | } | |
2508 | ||
2509 | /* filter to get final output */ | |
2510 | for (i = 0; i < (s->sample_blocks / 8); i++) { | |
2511 | int ch; | |
2512 | ||
2513 | for (ch = 0; ch < channels; ch++) | |
2514 | s->samples_chanptr[ch] = samples_flt[ch] + i * 256; | |
2515 | for (; ch < full_channels; ch++) | |
2516 | s->samples_chanptr[ch] = s->extra_channels[ch - channels] + i * 256; | |
2517 | ||
2518 | dca_filter_channels(s, i); | |
2519 | ||
2520 | /* If this was marked as a DTS-ES stream we need to subtract back- */ | |
2521 | /* channel from SL & SR to remove matrixed back-channel signal */ | |
2522 | if ((s->source_pcm_res & 1) && s->xch_present) { | |
2523 | float *back_chan = s->samples_chanptr[s->channel_order_tab[s->xch_base_channel]]; | |
2524 | float *lt_chan = s->samples_chanptr[s->channel_order_tab[s->xch_base_channel - 2]]; | |
2525 | float *rt_chan = s->samples_chanptr[s->channel_order_tab[s->xch_base_channel - 1]]; | |
f6fa7814 DM |
2526 | s->fdsp->vector_fmac_scalar(lt_chan, back_chan, -M_SQRT1_2, 256); |
2527 | s->fdsp->vector_fmac_scalar(rt_chan, back_chan, -M_SQRT1_2, 256); | |
2ba45a60 DM |
2528 | } |
2529 | ||
2530 | /* If stream contains XXCH, we might need to undo an embedded downmix */ | |
2531 | if (s->xxch_dmix_embedded) { | |
2532 | /* Loop over channel sets in turn */ | |
2533 | ch = num_core_channels; | |
2534 | for (chset = 0; chset < s->xxch_chset; chset++) { | |
2535 | endch = ch + s->xxch_chset_nch[chset]; | |
2536 | mask = s->xxch_dmix_embedded; | |
2537 | ||
2538 | /* undo downmix */ | |
2539 | for (j = ch; j < endch; j++) { | |
2540 | if (mask & (1 << j)) { /* this channel has been mixed-out */ | |
2541 | src_chan = s->samples_chanptr[s->channel_order_tab[j]]; | |
2542 | for (k = 0; k < endch; k++) { | |
2543 | achan = s->channel_order_tab[k]; | |
2544 | scale = s->xxch_dmix_coeff[j][k]; | |
2545 | if (scale != 0.0) { | |
2546 | dst_chan = s->samples_chanptr[achan]; | |
f6fa7814 | 2547 | s->fdsp->vector_fmac_scalar(dst_chan, src_chan, |
2ba45a60 DM |
2548 | -scale, 256); |
2549 | } | |
2550 | } | |
2551 | } | |
2552 | } | |
2553 | ||
2554 | /* if a downmix has been embedded then undo the pre-scaling */ | |
2555 | if ((mask & (1 << ch)) && s->xxch_dmix_sf[chset] != 1.0f) { | |
2556 | scale = s->xxch_dmix_sf[chset]; | |
2557 | ||
2558 | for (j = 0; j < ch; j++) { | |
2559 | src_chan = s->samples_chanptr[s->channel_order_tab[j]]; | |
2560 | for (k = 0; k < 256; k++) | |
2561 | src_chan[k] *= scale; | |
2562 | } | |
2563 | ||
2564 | /* LFE channel is always part of core, scale if it exists */ | |
2565 | if (s->lfe) { | |
2566 | src_chan = s->samples_chanptr[s->lfe_index]; | |
2567 | for (k = 0; k < 256; k++) | |
2568 | src_chan[k] *= scale; | |
2569 | } | |
2570 | } | |
2571 | ||
2572 | ch = endch; | |
2573 | } | |
2574 | ||
2575 | } | |
2576 | } | |
2577 | ||
2578 | /* update lfe history */ | |
2579 | lfe_samples = 2 * s->lfe * (s->sample_blocks / 8); | |
2580 | for (i = 0; i < 2 * s->lfe * 4; i++) | |
2581 | s->lfe_data[i] = s->lfe_data[i + lfe_samples]; | |
2582 | ||
2583 | /* AVMatrixEncoding | |
2584 | * | |
2585 | * DCA_STEREO_TOTAL (Lt/Rt) is equivalent to Dolby Surround */ | |
2586 | ret = ff_side_data_update_matrix_encoding(frame, | |
2587 | (s->output & ~DCA_LFE) == DCA_STEREO_TOTAL ? | |
2588 | AV_MATRIX_ENCODING_DOLBY : AV_MATRIX_ENCODING_NONE); | |
2589 | if (ret < 0) | |
2590 | return ret; | |
2591 | ||
2592 | *got_frame_ptr = 1; | |
2593 | ||
2594 | return buf_size; | |
2595 | } | |
2596 | ||
2ba45a60 DM |
2597 | /** |
2598 | * DCA initialization | |
2599 | * | |
2600 | * @param avctx pointer to the AVCodecContext | |
2601 | */ | |
2602 | ||
2603 | static av_cold int dca_decode_init(AVCodecContext *avctx) | |
2604 | { | |
2605 | DCAContext *s = avctx->priv_data; | |
2606 | ||
2607 | s->avctx = avctx; | |
2608 | dca_init_vlcs(); | |
2609 | ||
f6fa7814 DM |
2610 | s->fdsp = avpriv_float_dsp_alloc(avctx->flags & CODEC_FLAG_BITEXACT); |
2611 | if (!s->fdsp) | |
2612 | return AVERROR(ENOMEM); | |
2613 | ||
2ba45a60 DM |
2614 | ff_mdct_init(&s->imdct, 6, 1, 1.0); |
2615 | ff_synth_filter_init(&s->synth); | |
2616 | ff_dcadsp_init(&s->dcadsp); | |
2617 | ff_fmt_convert_init(&s->fmt_conv, avctx); | |
2618 | ||
2619 | avctx->sample_fmt = AV_SAMPLE_FMT_FLTP; | |
2620 | ||
2621 | /* allow downmixing to stereo */ | |
2622 | #if FF_API_REQUEST_CHANNELS | |
2623 | FF_DISABLE_DEPRECATION_WARNINGS | |
2624 | if (avctx->request_channels == 2) | |
2625 | avctx->request_channel_layout = AV_CH_LAYOUT_STEREO; | |
2626 | FF_ENABLE_DEPRECATION_WARNINGS | |
2627 | #endif | |
2628 | if (avctx->channels > 2 && | |
2629 | avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) | |
2630 | avctx->channels = 2; | |
2631 | ||
2632 | return 0; | |
2633 | } | |
2634 | ||
2635 | static av_cold int dca_decode_end(AVCodecContext *avctx) | |
2636 | { | |
2637 | DCAContext *s = avctx->priv_data; | |
2638 | ff_mdct_end(&s->imdct); | |
2639 | av_freep(&s->extra_channels_buffer); | |
f6fa7814 | 2640 | av_freep(&s->fdsp); |
2ba45a60 DM |
2641 | return 0; |
2642 | } | |
2643 | ||
2644 | static const AVProfile profiles[] = { | |
2645 | { FF_PROFILE_DTS, "DTS" }, | |
2646 | { FF_PROFILE_DTS_ES, "DTS-ES" }, | |
2647 | { FF_PROFILE_DTS_96_24, "DTS 96/24" }, | |
2648 | { FF_PROFILE_DTS_HD_HRA, "DTS-HD HRA" }, | |
2649 | { FF_PROFILE_DTS_HD_MA, "DTS-HD MA" }, | |
2650 | { FF_PROFILE_UNKNOWN }, | |
2651 | }; | |
2652 | ||
2653 | static const AVOption options[] = { | |
f6fa7814 | 2654 | { "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 }, |
2ba45a60 DM |
2655 | { NULL }, |
2656 | }; | |
2657 | ||
2658 | static const AVClass dca_decoder_class = { | |
2659 | .class_name = "DCA decoder", | |
2660 | .item_name = av_default_item_name, | |
2661 | .option = options, | |
2662 | .version = LIBAVUTIL_VERSION_INT, | |
2663 | .category = AV_CLASS_CATEGORY_DECODER, | |
2664 | }; | |
2665 | ||
2666 | AVCodec ff_dca_decoder = { | |
2667 | .name = "dca", | |
2668 | .long_name = NULL_IF_CONFIG_SMALL("DCA (DTS Coherent Acoustics)"), | |
2669 | .type = AVMEDIA_TYPE_AUDIO, | |
2670 | .id = AV_CODEC_ID_DTS, | |
2671 | .priv_data_size = sizeof(DCAContext), | |
2672 | .init = dca_decode_init, | |
2673 | .decode = dca_decode_frame, | |
2674 | .close = dca_decode_end, | |
2675 | .capabilities = CODEC_CAP_CHANNEL_CONF | CODEC_CAP_DR1, | |
2676 | .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP, | |
2677 | AV_SAMPLE_FMT_NONE }, | |
2678 | .profiles = NULL_IF_CONFIG_SMALL(profiles), | |
2679 | .priv_class = &dca_decoder_class, | |
2680 | }; |