GCC Code Coverage Report | |||||||||||||||||||||
|
|||||||||||||||||||||
Line | Branch | Exec | Source |
1 |
/** |
||
2 |
* @file |
||
3 |
* Vorbis I decoder |
||
4 |
* @author Denes Balatoni ( dbalatoni programozo hu ) |
||
5 |
* |
||
6 |
* This file is part of FFmpeg. |
||
7 |
* |
||
8 |
* FFmpeg is free software; you can redistribute it and/or |
||
9 |
* modify it under the terms of the GNU Lesser General Public |
||
10 |
* License as published by the Free Software Foundation; either |
||
11 |
* version 2.1 of the License, or (at your option) any later version. |
||
12 |
* |
||
13 |
* FFmpeg is distributed in the hope that it will be useful, |
||
14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
||
16 |
* Lesser General Public License for more details. |
||
17 |
* |
||
18 |
* You should have received a copy of the GNU Lesser General Public |
||
19 |
* License along with FFmpeg; if not, write to the Free Software |
||
20 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||
21 |
*/ |
||
22 |
|||
23 |
/** |
||
24 |
* @file |
||
25 |
* Vorbis I decoder |
||
26 |
* @author Denes Balatoni ( dbalatoni programozo hu ) |
||
27 |
*/ |
||
28 |
|||
29 |
#include <inttypes.h> |
||
30 |
#include <math.h> |
||
31 |
|||
32 |
#include "libavutil/avassert.h" |
||
33 |
#include "libavutil/float_dsp.h" |
||
34 |
|||
35 |
#define BITSTREAM_READER_LE |
||
36 |
#include "avcodec.h" |
||
37 |
#include "fft.h" |
||
38 |
#include "get_bits.h" |
||
39 |
#include "internal.h" |
||
40 |
#include "vorbis.h" |
||
41 |
#include "vorbisdsp.h" |
||
42 |
#include "xiph.h" |
||
43 |
|||
44 |
#define V_NB_BITS 8 |
||
45 |
#define V_NB_BITS2 11 |
||
46 |
#define V_MAX_VLCS (1 << 16) |
||
47 |
#define V_MAX_PARTITIONS (1 << 20) |
||
48 |
|||
49 |
typedef struct vorbis_codebook { |
||
50 |
uint8_t dimensions; |
||
51 |
uint8_t lookup_type; |
||
52 |
uint8_t maxdepth; |
||
53 |
VLC vlc; |
||
54 |
float *codevectors; |
||
55 |
unsigned int nb_bits; |
||
56 |
} vorbis_codebook; |
||
57 |
|||
58 |
typedef union vorbis_floor_u vorbis_floor_data; |
||
59 |
typedef struct vorbis_floor0_s vorbis_floor0; |
||
60 |
typedef struct vorbis_floor1_s vorbis_floor1; |
||
61 |
struct vorbis_context_s; |
||
62 |
typedef |
||
63 |
int (* vorbis_floor_decode_func) |
||
64 |
(struct vorbis_context_s *, vorbis_floor_data *, float *); |
||
65 |
typedef struct vorbis_floor { |
||
66 |
uint8_t floor_type; |
||
67 |
vorbis_floor_decode_func decode; |
||
68 |
union vorbis_floor_u { |
||
69 |
struct vorbis_floor0_s { |
||
70 |
uint8_t order; |
||
71 |
uint16_t rate; |
||
72 |
uint16_t bark_map_size; |
||
73 |
int32_t *map[2]; |
||
74 |
uint32_t map_size[2]; |
||
75 |
uint8_t amplitude_bits; |
||
76 |
uint8_t amplitude_offset; |
||
77 |
uint8_t num_books; |
||
78 |
uint8_t *book_list; |
||
79 |
float *lsp; |
||
80 |
} t0; |
||
81 |
struct vorbis_floor1_s { |
||
82 |
uint8_t partitions; |
||
83 |
uint8_t partition_class[32]; |
||
84 |
uint8_t class_dimensions[16]; |
||
85 |
uint8_t class_subclasses[16]; |
||
86 |
uint8_t class_masterbook[16]; |
||
87 |
int16_t subclass_books[16][8]; |
||
88 |
uint8_t multiplier; |
||
89 |
uint16_t x_list_dim; |
||
90 |
vorbis_floor1_entry *list; |
||
91 |
} t1; |
||
92 |
} data; |
||
93 |
} vorbis_floor; |
||
94 |
|||
95 |
typedef struct vorbis_residue { |
||
96 |
uint16_t type; |
||
97 |
uint32_t begin; |
||
98 |
uint32_t end; |
||
99 |
unsigned partition_size; |
||
100 |
uint8_t classifications; |
||
101 |
uint8_t classbook; |
||
102 |
int16_t books[64][8]; |
||
103 |
uint8_t maxpass; |
||
104 |
uint16_t ptns_to_read; |
||
105 |
uint8_t *classifs; |
||
106 |
} vorbis_residue; |
||
107 |
|||
108 |
typedef struct vorbis_mapping { |
||
109 |
uint8_t submaps; |
||
110 |
uint16_t coupling_steps; |
||
111 |
uint8_t *magnitude; |
||
112 |
uint8_t *angle; |
||
113 |
uint8_t *mux; |
||
114 |
uint8_t submap_floor[16]; |
||
115 |
uint8_t submap_residue[16]; |
||
116 |
} vorbis_mapping; |
||
117 |
|||
118 |
typedef struct vorbis_mode { |
||
119 |
uint8_t blockflag; |
||
120 |
uint16_t windowtype; |
||
121 |
uint16_t transformtype; |
||
122 |
uint8_t mapping; |
||
123 |
} vorbis_mode; |
||
124 |
|||
125 |
typedef struct vorbis_context_s { |
||
126 |
AVCodecContext *avctx; |
||
127 |
GetBitContext gb; |
||
128 |
VorbisDSPContext dsp; |
||
129 |
AVFloatDSPContext *fdsp; |
||
130 |
|||
131 |
FFTContext mdct[2]; |
||
132 |
uint8_t first_frame; |
||
133 |
uint32_t version; |
||
134 |
uint8_t audio_channels; |
||
135 |
uint32_t audio_samplerate; |
||
136 |
uint32_t bitrate_maximum; |
||
137 |
uint32_t bitrate_nominal; |
||
138 |
uint32_t bitrate_minimum; |
||
139 |
uint32_t blocksize[2]; |
||
140 |
const float *win[2]; |
||
141 |
uint16_t codebook_count; |
||
142 |
vorbis_codebook *codebooks; |
||
143 |
uint8_t floor_count; |
||
144 |
vorbis_floor *floors; |
||
145 |
uint8_t residue_count; |
||
146 |
vorbis_residue *residues; |
||
147 |
uint8_t mapping_count; |
||
148 |
vorbis_mapping *mappings; |
||
149 |
uint8_t mode_count; |
||
150 |
vorbis_mode *modes; |
||
151 |
uint8_t mode_number; // mode number for the current packet |
||
152 |
int8_t previous_window; |
||
153 |
float *channel_residues; |
||
154 |
float *saved; |
||
155 |
} vorbis_context; |
||
156 |
|||
157 |
/* Helper functions */ |
||
158 |
|||
159 |
#define BARK(x) \ |
||
160 |
(13.1f * atan(0.00074f * (x)) + 2.24f * atan(1.85e-8f * (x) * (x)) + 1e-4f * (x)) |
||
161 |
|||
162 |
static const char idx_err_str[] = "Index value %d out of range (0 - %d) for %s at %s:%i\n"; |
||
163 |
#define VALIDATE_INDEX(idx, limit) \ |
||
164 |
if (idx >= limit) {\ |
||
165 |
av_log(vc->avctx, AV_LOG_ERROR,\ |
||
166 |
idx_err_str,\ |
||
167 |
(int)(idx), (int)(limit - 1), #idx, __FILE__, __LINE__);\ |
||
168 |
return AVERROR_INVALIDDATA;\ |
||
169 |
} |
||
170 |
#define GET_VALIDATED_INDEX(idx, bits, limit) \ |
||
171 |
{\ |
||
172 |
idx = get_bits(gb, bits);\ |
||
173 |
VALIDATE_INDEX(idx, limit)\ |
||
174 |
} |
||
175 |
|||
176 |
1720 |
static float vorbisfloat2float(unsigned val) |
|
177 |
{ |
||
178 |
1720 |
double mant = val & 0x1fffff; |
|
179 |
1720 |
long exp = (val & 0x7fe00000L) >> 21; |
|
180 |
✓✓ | 1720 |
if (val & 0x80000000) |
181 |
792 |
mant = -mant; |
|
182 |
1720 |
return ldexp(mant, exp - 20 - 768); |
|
183 |
} |
||
184 |
|||
185 |
|||
186 |
// Free all allocated memory ----------------------------------------- |
||
187 |
|||
188 |
62 |
static void vorbis_free(vorbis_context *vc) |
|
189 |
{ |
||
190 |
int i; |
||
191 |
|||
192 |
62 |
av_freep(&vc->channel_residues); |
|
193 |
62 |
av_freep(&vc->saved); |
|
194 |
62 |
av_freep(&vc->fdsp); |
|
195 |
|||
196 |
✓✗ | 62 |
if (vc->residues) |
197 |
✓✓ | 186 |
for (i = 0; i < vc->residue_count; i++) |
198 |
124 |
av_freep(&vc->residues[i].classifs); |
|
199 |
62 |
av_freep(&vc->residues); |
|
200 |
62 |
av_freep(&vc->modes); |
|
201 |
|||
202 |
62 |
ff_mdct_end(&vc->mdct[0]); |
|
203 |
62 |
ff_mdct_end(&vc->mdct[1]); |
|
204 |
|||
205 |
✓✗ | 62 |
if (vc->codebooks) |
206 |
✓✓ | 1980 |
for (i = 0; i < vc->codebook_count; ++i) { |
207 |
1918 |
av_freep(&vc->codebooks[i].codevectors); |
|
208 |
1918 |
ff_free_vlc(&vc->codebooks[i].vlc); |
|
209 |
} |
||
210 |
62 |
av_freep(&vc->codebooks); |
|
211 |
|||
212 |
✓✗ | 62 |
if (vc->floors) |
213 |
✓✓ | 186 |
for (i = 0; i < vc->floor_count; ++i) { |
214 |
✓✓ | 124 |
if (vc->floors[i].floor_type == 0) { |
215 |
44 |
av_freep(&vc->floors[i].data.t0.map[0]); |
|
216 |
44 |
av_freep(&vc->floors[i].data.t0.map[1]); |
|
217 |
44 |
av_freep(&vc->floors[i].data.t0.book_list); |
|
218 |
44 |
av_freep(&vc->floors[i].data.t0.lsp); |
|
219 |
} else { |
||
220 |
80 |
av_freep(&vc->floors[i].data.t1.list); |
|
221 |
} |
||
222 |
} |
||
223 |
62 |
av_freep(&vc->floors); |
|
224 |
|||
225 |
✓✗ | 62 |
if (vc->mappings) |
226 |
✓✓ | 184 |
for (i = 0; i < vc->mapping_count; ++i) { |
227 |
122 |
av_freep(&vc->mappings[i].magnitude); |
|
228 |
122 |
av_freep(&vc->mappings[i].angle); |
|
229 |
122 |
av_freep(&vc->mappings[i].mux); |
|
230 |
} |
||
231 |
62 |
av_freep(&vc->mappings); |
|
232 |
62 |
} |
|
233 |
|||
234 |
// Parse setup header ------------------------------------------------- |
||
235 |
|||
236 |
// Process codebooks part |
||
237 |
|||
238 |
62 |
static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) |
|
239 |
{ |
||
240 |
unsigned cb; |
||
241 |
62 |
uint8_t *tmp_vlc_bits = NULL; |
|
242 |
62 |
uint32_t *tmp_vlc_codes = NULL; |
|
243 |
62 |
GetBitContext *gb = &vc->gb; |
|
244 |
62 |
uint16_t *codebook_multiplicands = NULL; |
|
245 |
62 |
int ret = 0; |
|
246 |
|||
247 |
62 |
vc->codebook_count = get_bits(gb, 8) + 1; |
|
248 |
|||
249 |
ff_dlog(NULL, " Codebooks: %d \n", vc->codebook_count); |
||
250 |
|||
251 |
62 |
vc->codebooks = av_mallocz(vc->codebook_count * sizeof(*vc->codebooks)); |
|
252 |
62 |
tmp_vlc_bits = av_mallocz(V_MAX_VLCS * sizeof(*tmp_vlc_bits)); |
|
253 |
62 |
tmp_vlc_codes = av_mallocz(V_MAX_VLCS * sizeof(*tmp_vlc_codes)); |
|
254 |
62 |
codebook_multiplicands = av_malloc(V_MAX_VLCS * sizeof(*codebook_multiplicands)); |
|
255 |
✓✗✓✗ |
62 |
if (!vc->codebooks || |
256 |
✓✗✗✓ |
62 |
!tmp_vlc_bits || !tmp_vlc_codes || !codebook_multiplicands) { |
257 |
ret = AVERROR(ENOMEM); |
||
258 |
goto error; |
||
259 |
} |
||
260 |
|||
261 |
✓✓ | 1980 |
for (cb = 0; cb < vc->codebook_count; ++cb) { |
262 |
1918 |
vorbis_codebook *codebook_setup = &vc->codebooks[cb]; |
|
263 |
1918 |
unsigned ordered, t, entries, used_entries = 0; |
|
264 |
|||
265 |
ff_dlog(NULL, " %u. Codebook\n", cb); |
||
266 |
|||
267 |
✗✓ | 1918 |
if (get_bits(gb, 24) != 0x564342) { |
268 |
av_log(vc->avctx, AV_LOG_ERROR, |
||
269 |
" %u. Codebook setup data corrupt.\n", cb); |
||
270 |
ret = AVERROR_INVALIDDATA; |
||
271 |
goto error; |
||
272 |
} |
||
273 |
|||
274 |
1918 |
codebook_setup->dimensions=get_bits(gb, 16); |
|
275 |
✓✗✗✓ |
1918 |
if (codebook_setup->dimensions > 16 || codebook_setup->dimensions == 0) { |
276 |
av_log(vc->avctx, AV_LOG_ERROR, |
||
277 |
" %u. Codebook's dimension is invalid (%d).\n", |
||
278 |
cb, codebook_setup->dimensions); |
||
279 |
ret = AVERROR_INVALIDDATA; |
||
280 |
goto error; |
||
281 |
} |
||
282 |
1918 |
entries = get_bits(gb, 24); |
|
283 |
✗✓ | 1918 |
if (entries > V_MAX_VLCS) { |
284 |
av_log(vc->avctx, AV_LOG_ERROR, |
||
285 |
" %u. Codebook has too many entries (%u).\n", |
||
286 |
cb, entries); |
||
287 |
ret = AVERROR_INVALIDDATA; |
||
288 |
goto error; |
||
289 |
} |
||
290 |
|||
291 |
1918 |
ordered = get_bits1(gb); |
|
292 |
|||
293 |
ff_dlog(NULL, " codebook_dimensions %d, codebook_entries %u\n", |
||
294 |
codebook_setup->dimensions, entries); |
||
295 |
|||
296 |
✓✓ | 1918 |
if (!ordered) { |
297 |
unsigned ce, flag; |
||
298 |
1898 |
unsigned sparse = get_bits1(gb); |
|
299 |
|||
300 |
ff_dlog(NULL, " not ordered \n"); |
||
301 |
|||
302 |
✓✓ | 1898 |
if (sparse) { |
303 |
ff_dlog(NULL, " sparse \n"); |
||
304 |
|||
305 |
770 |
used_entries = 0; |
|
306 |
✓✓ | 279642 |
for (ce = 0; ce < entries; ++ce) { |
307 |
278872 |
flag = get_bits1(gb); |
|
308 |
✓✓ | 278872 |
if (flag) { |
309 |
94878 |
tmp_vlc_bits[ce] = get_bits(gb, 5) + 1; |
|
310 |
94878 |
++used_entries; |
|
311 |
} else |
||
312 |
183994 |
tmp_vlc_bits[ce] = 0; |
|
313 |
} |
||
314 |
} else { |
||
315 |
ff_dlog(NULL, " not sparse \n"); |
||
316 |
|||
317 |
1128 |
used_entries = entries; |
|
318 |
✓✓ | 292038 |
for (ce = 0; ce < entries; ++ce) |
319 |
290910 |
tmp_vlc_bits[ce] = get_bits(gb, 5) + 1; |
|
320 |
} |
||
321 |
} else { |
||
322 |
20 |
unsigned current_entry = 0; |
|
323 |
20 |
unsigned current_length = get_bits(gb, 5) + 1; |
|
324 |
|||
325 |
ff_dlog(NULL, " ordered, current length: %u\n", current_length); //FIXME |
||
326 |
|||
327 |
20 |
used_entries = entries; |
|
328 |
✓✓✓✗ |
100 |
for (; current_entry < used_entries && current_length <= 32; ++current_length) { |
329 |
unsigned i, number; |
||
330 |
|||
331 |
ff_dlog(NULL, " number bits: %u ", ilog(entries - current_entry)); |
||
332 |
|||
333 |
80 |
number = get_bits(gb, ilog(entries - current_entry)); |
|
334 |
|||
335 |
ff_dlog(NULL, " number: %u\n", number); |
||
336 |
|||
337 |
✓✓ | 966 |
for (i = current_entry; i < number+current_entry; ++i) |
338 |
✓✗ | 886 |
if (i < used_entries) |
339 |
886 |
tmp_vlc_bits[i] = current_length; |
|
340 |
|||
341 |
80 |
current_entry+=number; |
|
342 |
} |
||
343 |
✗✓ | 20 |
if (current_entry>used_entries) { |
344 |
av_log(vc->avctx, AV_LOG_ERROR, " More codelengths than codes in codebook. \n"); |
||
345 |
ret = AVERROR_INVALIDDATA; |
||
346 |
goto error; |
||
347 |
} |
||
348 |
} |
||
349 |
|||
350 |
1918 |
codebook_setup->lookup_type = get_bits(gb, 4); |
|
351 |
|||
352 |
ff_dlog(NULL, " lookup type: %d : %s \n", codebook_setup->lookup_type, |
||
353 |
codebook_setup->lookup_type ? "vq" : "no lookup"); |
||
354 |
|||
355 |
// If the codebook is used for (inverse) VQ, calculate codevectors. |
||
356 |
|||
357 |
✓✓ | 1918 |
if (codebook_setup->lookup_type == 1) { |
358 |
unsigned i, j, k; |
||
359 |
860 |
unsigned codebook_lookup_values = ff_vorbis_nth_root(entries, codebook_setup->dimensions); |
|
360 |
|||
361 |
860 |
float codebook_minimum_value = vorbisfloat2float(get_bits_long(gb, 32)); |
|
362 |
860 |
float codebook_delta_value = vorbisfloat2float(get_bits_long(gb, 32)); |
|
363 |
860 |
unsigned codebook_value_bits = get_bits(gb, 4) + 1; |
|
364 |
860 |
unsigned codebook_sequence_p = get_bits1(gb); |
|
365 |
|||
366 |
ff_dlog(NULL, " We expect %d numbers for building the codevectors. \n", |
||
367 |
codebook_lookup_values); |
||
368 |
ff_dlog(NULL, " delta %f minmum %f \n", |
||
369 |
codebook_delta_value, codebook_minimum_value); |
||
370 |
|||
371 |
✓✓ | 17796 |
for (i = 0; i < codebook_lookup_values; ++i) { |
372 |
16936 |
codebook_multiplicands[i] = get_bits(gb, codebook_value_bits); |
|
373 |
|||
374 |
ff_dlog(NULL, " multiplicands*delta+minmum : %e \n", |
||
375 |
(float)codebook_multiplicands[i] * codebook_delta_value + codebook_minimum_value); |
||
376 |
ff_dlog(NULL, " multiplicand %u\n", codebook_multiplicands[i]); |
||
377 |
} |
||
378 |
|||
379 |
// Weed out unused vlcs and build codevector vector |
||
380 |
✓✗ | 860 |
if (used_entries) { |
381 |
860 |
codebook_setup->codevectors = |
|
382 |
860 |
av_mallocz_array(used_entries, codebook_setup->dimensions * |
|
383 |
sizeof(*codebook_setup->codevectors)); |
||
384 |
✗✓ | 860 |
if (!codebook_setup->codevectors) { |
385 |
ret = AVERROR(ENOMEM); |
||
386 |
goto error; |
||
387 |
} |
||
388 |
} else |
||
389 |
codebook_setup->codevectors = NULL; |
||
390 |
|||
391 |
✓✓ | 482758 |
for (j = 0, i = 0; i < entries; ++i) { |
392 |
481898 |
unsigned dim = codebook_setup->dimensions; |
|
393 |
|||
394 |
✓✓ | 481898 |
if (tmp_vlc_bits[i]) { |
395 |
309262 |
float last = 0.0; |
|
396 |
309262 |
unsigned lookup_offset = i; |
|
397 |
|||
398 |
ff_dlog(vc->avctx, "Lookup offset %u ,", i); |
||
399 |
|||
400 |
✓✓ | 1235351 |
for (k = 0; k < dim; ++k) { |
401 |
926089 |
unsigned multiplicand_offset = lookup_offset % codebook_lookup_values; |
|
402 |
926089 |
codebook_setup->codevectors[j * dim + k] = codebook_multiplicands[multiplicand_offset] * codebook_delta_value + codebook_minimum_value + last; |
|
403 |
✓✓ | 926089 |
if (codebook_sequence_p) |
404 |
257530 |
last = codebook_setup->codevectors[j * dim + k]; |
|
405 |
926089 |
lookup_offset/=codebook_lookup_values; |
|
406 |
} |
||
407 |
309262 |
tmp_vlc_bits[j] = tmp_vlc_bits[i]; |
|
408 |
|||
409 |
ff_dlog(vc->avctx, "real lookup offset %u, vector: ", j); |
||
410 |
✓✓ | 1235351 |
for (k = 0; k < dim; ++k) |
411 |
ff_dlog(vc->avctx, " %f ", |
||
412 |
codebook_setup->codevectors[j * dim + k]); |
||
413 |
ff_dlog(vc->avctx, "\n"); |
||
414 |
|||
415 |
309262 |
++j; |
|
416 |
} |
||
417 |
} |
||
418 |
✗✓ | 860 |
if (j != used_entries) { |
419 |
av_log(vc->avctx, AV_LOG_ERROR, "Bug in codevector vector building code. \n"); |
||
420 |
ret = AVERROR_INVALIDDATA; |
||
421 |
goto error; |
||
422 |
} |
||
423 |
860 |
entries = used_entries; |
|
424 |
✗✓ | 1058 |
} else if (codebook_setup->lookup_type >= 2) { |
425 |
av_log(vc->avctx, AV_LOG_ERROR, "Codebook lookup type not supported. \n"); |
||
426 |
ret = AVERROR_INVALIDDATA; |
||
427 |
goto error; |
||
428 |
} |
||
429 |
|||
430 |
// Initialize VLC table |
||
431 |
✗✓ | 1918 |
if (ff_vorbis_len2vlc(tmp_vlc_bits, tmp_vlc_codes, entries)) { |
432 |
av_log(vc->avctx, AV_LOG_ERROR, " Invalid code lengths while generating vlcs. \n"); |
||
433 |
ret = AVERROR_INVALIDDATA; |
||
434 |
goto error; |
||
435 |
} |
||
436 |
1918 |
codebook_setup->maxdepth = 0; |
|
437 |
✓✓ | 399950 |
for (t = 0; t < entries; ++t) |
438 |
✓✓ | 398032 |
if (tmp_vlc_bits[t] >= codebook_setup->maxdepth) |
439 |
106190 |
codebook_setup->maxdepth = tmp_vlc_bits[t]; |
|
440 |
|||
441 |
✗✓ | 1918 |
if (codebook_setup->maxdepth > 3 * V_NB_BITS) |
442 |
codebook_setup->nb_bits = V_NB_BITS2; |
||
443 |
else |
||
444 |
1918 |
codebook_setup->nb_bits = V_NB_BITS; |
|
445 |
|||
446 |
1918 |
codebook_setup->maxdepth = (codebook_setup->maxdepth+codebook_setup->nb_bits - 1) / codebook_setup->nb_bits; |
|
447 |
|||
448 |
✗✓ | 1918 |
if ((ret = init_vlc(&codebook_setup->vlc, codebook_setup->nb_bits, |
449 |
entries, tmp_vlc_bits, sizeof(*tmp_vlc_bits), |
||
450 |
sizeof(*tmp_vlc_bits), tmp_vlc_codes, |
||
451 |
sizeof(*tmp_vlc_codes), sizeof(*tmp_vlc_codes), |
||
452 |
INIT_VLC_LE))) { |
||
453 |
av_log(vc->avctx, AV_LOG_ERROR, " Error generating vlc tables. \n"); |
||
454 |
goto error; |
||
455 |
} |
||
456 |
} |
||
457 |
|||
458 |
62 |
av_free(tmp_vlc_bits); |
|
459 |
62 |
av_free(tmp_vlc_codes); |
|
460 |
62 |
av_free(codebook_multiplicands); |
|
461 |
62 |
return 0; |
|
462 |
|||
463 |
// Error: |
||
464 |
error: |
||
465 |
av_free(tmp_vlc_bits); |
||
466 |
av_free(tmp_vlc_codes); |
||
467 |
av_free(codebook_multiplicands); |
||
468 |
return ret; |
||
469 |
} |
||
470 |
|||
471 |
// Process time domain transforms part (unused in Vorbis I) |
||
472 |
|||
473 |
62 |
static int vorbis_parse_setup_hdr_tdtransforms(vorbis_context *vc) |
|
474 |
{ |
||
475 |
62 |
GetBitContext *gb = &vc->gb; |
|
476 |
62 |
unsigned i, vorbis_time_count = get_bits(gb, 6) + 1; |
|
477 |
|||
478 |
✓✓ | 124 |
for (i = 0; i < vorbis_time_count; ++i) { |
479 |
62 |
unsigned vorbis_tdtransform = get_bits(gb, 16); |
|
480 |
|||
481 |
ff_dlog(NULL, " Vorbis time domain transform %u: %u\n", |
||
482 |
vorbis_time_count, vorbis_tdtransform); |
||
483 |
|||
484 |
✗✓ | 62 |
if (vorbis_tdtransform) { |
485 |
av_log(vc->avctx, AV_LOG_ERROR, "Vorbis time domain transform data nonzero. \n"); |
||
486 |
return AVERROR_INVALIDDATA; |
||
487 |
} |
||
488 |
} |
||
489 |
62 |
return 0; |
|
490 |
} |
||
491 |
|||
492 |
// Process floors part |
||
493 |
|||
494 |
static int vorbis_floor0_decode(vorbis_context *vc, |
||
495 |
vorbis_floor_data *vfu, float *vec); |
||
496 |
static int create_map(vorbis_context *vc, unsigned floor_number); |
||
497 |
static int vorbis_floor1_decode(vorbis_context *vc, |
||
498 |
vorbis_floor_data *vfu, float *vec); |
||
499 |
62 |
static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) |
|
500 |
{ |
||
501 |
62 |
GetBitContext *gb = &vc->gb; |
|
502 |
int i, j, k, ret; |
||
503 |
|||
504 |
62 |
vc->floor_count = get_bits(gb, 6) + 1; |
|
505 |
|||
506 |
62 |
vc->floors = av_mallocz(vc->floor_count * sizeof(*vc->floors)); |
|
507 |
✗✓ | 62 |
if (!vc->floors) |
508 |
return AVERROR(ENOMEM); |
||
509 |
|||
510 |
✓✓ | 186 |
for (i = 0; i < vc->floor_count; ++i) { |
511 |
124 |
vorbis_floor *floor_setup = &vc->floors[i]; |
|
512 |
|||
513 |
124 |
floor_setup->floor_type = get_bits(gb, 16); |
|
514 |
|||
515 |
ff_dlog(NULL, " %d. floor type %d \n", i, floor_setup->floor_type); |
||
516 |
|||
517 |
✓✓ | 124 |
if (floor_setup->floor_type == 1) { |
518 |
80 |
int maximum_class = -1; |
|
519 |
80 |
unsigned rangebits, rangemax, floor1_values = 2; |
|
520 |
|||
521 |
80 |
floor_setup->decode = vorbis_floor1_decode; |
|
522 |
|||
523 |
80 |
floor_setup->data.t1.partitions = get_bits(gb, 5); |
|
524 |
|||
525 |
ff_dlog(NULL, " %d.floor: %d partitions \n", |
||
526 |
i, floor_setup->data.t1.partitions); |
||
527 |
|||
528 |
✓✓ | 546 |
for (j = 0; j < floor_setup->data.t1.partitions; ++j) { |
529 |
466 |
floor_setup->data.t1.partition_class[j] = get_bits(gb, 4); |
|
530 |
✓✓ | 466 |
if (floor_setup->data.t1.partition_class[j] > maximum_class) |
531 |
294 |
maximum_class = floor_setup->data.t1.partition_class[j]; |
|
532 |
|||
533 |
ff_dlog(NULL, " %d. floor %d partition class %d \n", |
||
534 |
i, j, floor_setup->data.t1.partition_class[j]); |
||
535 |
|||
536 |
} |
||
537 |
|||
538 |
ff_dlog(NULL, " maximum class %d \n", maximum_class); |
||
539 |
|||
540 |
✓✓ | 374 |
for (j = 0; j <= maximum_class; ++j) { |
541 |
294 |
floor_setup->data.t1.class_dimensions[j] = get_bits(gb, 3) + 1; |
|
542 |
294 |
floor_setup->data.t1.class_subclasses[j] = get_bits(gb, 2); |
|
543 |
|||
544 |
ff_dlog(NULL, " %d floor %d class dim: %d subclasses %d \n", i, j, |
||
545 |
floor_setup->data.t1.class_dimensions[j], |
||
546 |
floor_setup->data.t1.class_subclasses[j]); |
||
547 |
|||
548 |
✓✓ | 294 |
if (floor_setup->data.t1.class_subclasses[j]) { |
549 |
✗✓ | 242 |
GET_VALIDATED_INDEX(floor_setup->data.t1.class_masterbook[j], 8, vc->codebook_count) |
550 |
|||
551 |
ff_dlog(NULL, " masterbook: %d \n", floor_setup->data.t1.class_masterbook[j]); |
||
552 |
} |
||
553 |
|||
554 |
✓✓ | 1130 |
for (k = 0; k < (1 << floor_setup->data.t1.class_subclasses[j]); ++k) { |
555 |
836 |
int16_t bits = get_bits(gb, 8) - 1; |
|
556 |
✓✓ | 836 |
if (bits != -1) |
557 |
✗✓ | 692 |
VALIDATE_INDEX(bits, vc->codebook_count) |
558 |
836 |
floor_setup->data.t1.subclass_books[j][k] = bits; |
|
559 |
|||
560 |
ff_dlog(NULL, " book %d. : %d \n", k, floor_setup->data.t1.subclass_books[j][k]); |
||
561 |
} |
||
562 |
} |
||
563 |
|||
564 |
80 |
floor_setup->data.t1.multiplier = get_bits(gb, 2) + 1; |
|
565 |
80 |
floor_setup->data.t1.x_list_dim = 2; |
|
566 |
|||
567 |
✓✓ | 546 |
for (j = 0; j < floor_setup->data.t1.partitions; ++j) |
568 |
466 |
floor_setup->data.t1.x_list_dim+=floor_setup->data.t1.class_dimensions[floor_setup->data.t1.partition_class[j]]; |
|
569 |
|||
570 |
80 |
floor_setup->data.t1.list = av_mallocz_array(floor_setup->data.t1.x_list_dim, |
|
571 |
sizeof(*floor_setup->data.t1.list)); |
||
572 |
✗✓ | 80 |
if (!floor_setup->data.t1.list) |
573 |
return AVERROR(ENOMEM); |
||
574 |
|||
575 |
80 |
rangebits = get_bits(gb, 4); |
|
576 |
✗✓✗✗ |
80 |
if (!rangebits && floor_setup->data.t1.partitions) { |
577 |
av_log(vc->avctx, AV_LOG_ERROR, |
||
578 |
"A rangebits value of 0 is not compliant with the Vorbis I specification.\n"); |
||
579 |
return AVERROR_INVALIDDATA; |
||
580 |
} |
||
581 |
80 |
rangemax = (1 << rangebits); |
|
582 |
✗✓ | 80 |
if (rangemax > vc->blocksize[1] / 2) { |
583 |
av_log(vc->avctx, AV_LOG_ERROR, |
||
584 |
"Floor value is too large for blocksize: %u (%"PRIu32")\n", |
||
585 |
rangemax, vc->blocksize[1] / 2); |
||
586 |
return AVERROR_INVALIDDATA; |
||
587 |
} |
||
588 |
80 |
floor_setup->data.t1.list[0].x = 0; |
|
589 |
80 |
floor_setup->data.t1.list[1].x = rangemax; |
|
590 |
|||
591 |
✓✓ | 546 |
for (j = 0; j < floor_setup->data.t1.partitions; ++j) { |
592 |
✓✓ | 1960 |
for (k = 0; k < floor_setup->data.t1.class_dimensions[floor_setup->data.t1.partition_class[j]]; ++k, ++floor1_values) { |
593 |
1494 |
floor_setup->data.t1.list[floor1_values].x = get_bits(gb, rangebits); |
|
594 |
|||
595 |
ff_dlog(NULL, " %u. floor1 Y coord. %d\n", floor1_values, |
||
596 |
floor_setup->data.t1.list[floor1_values].x); |
||
597 |
} |
||
598 |
} |
||
599 |
|||
600 |
// Precalculate order of x coordinates - needed for decode |
||
601 |
✗✓ | 80 |
if (ff_vorbis_ready_floor1_list(vc->avctx, |
602 |
floor_setup->data.t1.list, |
||
603 |
80 |
floor_setup->data.t1.x_list_dim)) { |
|
604 |
return AVERROR_INVALIDDATA; |
||
605 |
} |
||
606 |
✓✗ | 44 |
} else if (floor_setup->floor_type == 0) { |
607 |
44 |
unsigned max_codebook_dim = 0; |
|
608 |
|||
609 |
44 |
floor_setup->decode = vorbis_floor0_decode; |
|
610 |
|||
611 |
44 |
floor_setup->data.t0.order = get_bits(gb, 8); |
|
612 |
✗✓ | 44 |
if (!floor_setup->data.t0.order) { |
613 |
av_log(vc->avctx, AV_LOG_ERROR, "Floor 0 order is 0.\n"); |
||
614 |
return AVERROR_INVALIDDATA; |
||
615 |
} |
||
616 |
44 |
floor_setup->data.t0.rate = get_bits(gb, 16); |
|
617 |
✗✓ | 44 |
if (!floor_setup->data.t0.rate) { |
618 |
av_log(vc->avctx, AV_LOG_ERROR, "Floor 0 rate is 0.\n"); |
||
619 |
return AVERROR_INVALIDDATA; |
||
620 |
} |
||
621 |
44 |
floor_setup->data.t0.bark_map_size = get_bits(gb, 16); |
|
622 |
✗✓ | 44 |
if (!floor_setup->data.t0.bark_map_size) { |
623 |
av_log(vc->avctx, AV_LOG_ERROR, |
||
624 |
"Floor 0 bark map size is 0.\n"); |
||
625 |
return AVERROR_INVALIDDATA; |
||
626 |
} |
||
627 |
44 |
floor_setup->data.t0.amplitude_bits = get_bits(gb, 6); |
|
628 |
44 |
floor_setup->data.t0.amplitude_offset = get_bits(gb, 8); |
|
629 |
44 |
floor_setup->data.t0.num_books = get_bits(gb, 4) + 1; |
|
630 |
|||
631 |
/* allocate mem for booklist */ |
||
632 |
44 |
floor_setup->data.t0.book_list = |
|
633 |
44 |
av_malloc(floor_setup->data.t0.num_books); |
|
634 |
✗✓ | 44 |
if (!floor_setup->data.t0.book_list) |
635 |
return AVERROR(ENOMEM); |
||
636 |
/* read book indexes */ |
||
637 |
{ |
||
638 |
int idx; |
||
639 |
unsigned book_idx; |
||
640 |
✓✓ | 112 |
for (idx = 0; idx < floor_setup->data.t0.num_books; ++idx) { |
641 |
✗✓ | 68 |
GET_VALIDATED_INDEX(book_idx, 8, vc->codebook_count) |
642 |
68 |
floor_setup->data.t0.book_list[idx] = book_idx; |
|
643 |
✓✗ | 68 |
if (vc->codebooks[book_idx].dimensions > max_codebook_dim) |
644 |
68 |
max_codebook_dim = vc->codebooks[book_idx].dimensions; |
|
645 |
} |
||
646 |
} |
||
647 |
|||
648 |
✗✓ | 44 |
if ((ret = create_map(vc, i)) < 0) |
649 |
return ret; |
||
650 |
|||
651 |
/* codebook dim is for padding if codebook dim doesn't * |
||
652 |
* divide order+1 then we need to read more data */ |
||
653 |
44 |
floor_setup->data.t0.lsp = |
|
654 |
44 |
av_malloc_array((floor_setup->data.t0.order + 1 + max_codebook_dim), |
|
655 |
sizeof(*floor_setup->data.t0.lsp)); |
||
656 |
✗✓ | 44 |
if (!floor_setup->data.t0.lsp) |
657 |
return AVERROR(ENOMEM); |
||
658 |
|||
659 |
/* debug output parsed headers */ |
||
660 |
ff_dlog(NULL, "floor0 order: %u\n", floor_setup->data.t0.order); |
||
661 |
ff_dlog(NULL, "floor0 rate: %u\n", floor_setup->data.t0.rate); |
||
662 |
ff_dlog(NULL, "floor0 bark map size: %u\n", |
||
663 |
floor_setup->data.t0.bark_map_size); |
||
664 |
ff_dlog(NULL, "floor0 amplitude bits: %u\n", |
||
665 |
floor_setup->data.t0.amplitude_bits); |
||
666 |
ff_dlog(NULL, "floor0 amplitude offset: %u\n", |
||
667 |
floor_setup->data.t0.amplitude_offset); |
||
668 |
ff_dlog(NULL, "floor0 number of books: %u\n", |
||
669 |
floor_setup->data.t0.num_books); |
||
670 |
ff_dlog(NULL, "floor0 book list pointer: %p\n", |
||
671 |
floor_setup->data.t0.book_list); |
||
672 |
{ |
||
673 |
int idx; |
||
674 |
✓✓ | 112 |
for (idx = 0; idx < floor_setup->data.t0.num_books; ++idx) { |
675 |
ff_dlog(NULL, " Book %d: %u\n", idx + 1, |
||
676 |
floor_setup->data.t0.book_list[idx]); |
||
677 |
} |
||
678 |
} |
||
679 |
} else { |
||
680 |
av_log(vc->avctx, AV_LOG_ERROR, "Invalid floor type!\n"); |
||
681 |
return AVERROR_INVALIDDATA; |
||
682 |
} |
||
683 |
} |
||
684 |
62 |
return 0; |
|
685 |
} |
||
686 |
|||
687 |
// Process residues part |
||
688 |
|||
689 |
62 |
static int vorbis_parse_setup_hdr_residues(vorbis_context *vc) |
|
690 |
{ |
||
691 |
62 |
GetBitContext *gb = &vc->gb; |
|
692 |
unsigned i, j, k; |
||
693 |
|||
694 |
62 |
vc->residue_count = get_bits(gb, 6)+1; |
|
695 |
62 |
vc->residues = av_mallocz(vc->residue_count * sizeof(*vc->residues)); |
|
696 |
✗✓ | 62 |
if (!vc->residues) |
697 |
return AVERROR(ENOMEM); |
||
698 |
|||
699 |
ff_dlog(NULL, " There are %d residues. \n", vc->residue_count); |
||
700 |
|||
701 |
✓✓ | 186 |
for (i = 0; i < vc->residue_count; ++i) { |
702 |
124 |
vorbis_residue *res_setup = &vc->residues[i]; |
|
703 |
uint8_t cascade[64]; |
||
704 |
unsigned high_bits, low_bits; |
||
705 |
|||
706 |
124 |
res_setup->type = get_bits(gb, 16); |
|
707 |
|||
708 |
ff_dlog(NULL, " %u. residue type %d\n", i, res_setup->type); |
||
709 |
|||
710 |
124 |
res_setup->begin = get_bits(gb, 24); |
|
711 |
124 |
res_setup->end = get_bits(gb, 24); |
|
712 |
124 |
res_setup->partition_size = get_bits(gb, 24) + 1; |
|
713 |
/* Validations to prevent a buffer overflow later. */ |
||
714 |
✓✗ | 124 |
if (res_setup->begin>res_setup->end || |
715 |
✗✓ | 124 |
(res_setup->end-res_setup->begin) / res_setup->partition_size > FFMIN(V_MAX_PARTITIONS, 65535)) { |
716 |
av_log(vc->avctx, AV_LOG_ERROR, |
||
717 |
"partition out of bounds: type, begin, end, size, blocksize: %"PRIu16", %"PRIu32", %"PRIu32", %u, %"PRIu32"\n", |
||
718 |
res_setup->type, res_setup->begin, res_setup->end, |
||
719 |
res_setup->partition_size, vc->blocksize[1] / 2); |
||
720 |
return AVERROR_INVALIDDATA; |
||
721 |
} |
||
722 |
|||
723 |
124 |
res_setup->classifications = get_bits(gb, 6) + 1; |
|
724 |
✗✓ | 124 |
GET_VALIDATED_INDEX(res_setup->classbook, 8, vc->codebook_count) |
725 |
|||
726 |
124 |
res_setup->ptns_to_read = |
|
727 |
124 |
(res_setup->end - res_setup->begin) / res_setup->partition_size; |
|
728 |
248 |
res_setup->classifs = av_malloc_array(res_setup->ptns_to_read, |
|
729 |
124 |
vc->audio_channels * |
|
730 |
sizeof(*res_setup->classifs)); |
||
731 |
✗✓ | 124 |
if (!res_setup->classifs) |
732 |
return AVERROR(ENOMEM); |
||
733 |
|||
734 |
ff_dlog(NULL, " begin %"PRIu32" end %"PRIu32" part.size %u classif.s %"PRIu8" classbook %"PRIu8"\n", |
||
735 |
res_setup->begin, res_setup->end, res_setup->partition_size, |
||
736 |
res_setup->classifications, res_setup->classbook); |
||
737 |
|||
738 |
✓✓ | 1204 |
for (j = 0; j < res_setup->classifications; ++j) { |
739 |
1080 |
high_bits = 0; |
|
740 |
1080 |
low_bits = get_bits(gb, 3); |
|
741 |
✓✓ | 1080 |
if (get_bits1(gb)) |
742 |
4 |
high_bits = get_bits(gb, 5); |
|
743 |
1080 |
cascade[j] = (high_bits << 3) + low_bits; |
|
744 |
|||
745 |
ff_dlog(NULL, " %u class cascade depth: %d\n", j, ilog(cascade[j])); |
||
746 |
} |
||
747 |
|||
748 |
124 |
res_setup->maxpass = 0; |
|
749 |
✓✓ | 1204 |
for (j = 0; j < res_setup->classifications; ++j) { |
750 |
✓✓ | 9720 |
for (k = 0; k < 8; ++k) { |
751 |
✓✓ | 8640 |
if (cascade[j]&(1 << k)) { |
752 |
✗✓ | 1268 |
GET_VALIDATED_INDEX(res_setup->books[j][k], 8, vc->codebook_count) |
753 |
|||
754 |
ff_dlog(NULL, " %u class cascade depth %u book: %d\n", |
||
755 |
j, k, res_setup->books[j][k]); |
||
756 |
|||
757 |
✓✓ | 1268 |
if (k>res_setup->maxpass) |
758 |
98 |
res_setup->maxpass = k; |
|
759 |
} else { |
||
760 |
7372 |
res_setup->books[j][k] = -1; |
|
761 |
} |
||
762 |
} |
||
763 |
} |
||
764 |
} |
||
765 |
62 |
return 0; |
|
766 |
} |
||
767 |
|||
768 |
// Process mappings part |
||
769 |
|||
770 |
62 |
static int vorbis_parse_setup_hdr_mappings(vorbis_context *vc) |
|
771 |
{ |
||
772 |
62 |
GetBitContext *gb = &vc->gb; |
|
773 |
unsigned i, j; |
||
774 |
|||
775 |
62 |
vc->mapping_count = get_bits(gb, 6)+1; |
|
776 |
62 |
vc->mappings = av_mallocz(vc->mapping_count * sizeof(*vc->mappings)); |
|
777 |
✗✓ | 62 |
if (!vc->mappings) |
778 |
return AVERROR(ENOMEM); |
||
779 |
|||
780 |
ff_dlog(NULL, " There are %d mappings. \n", vc->mapping_count); |
||
781 |
|||
782 |
✓✓ | 184 |
for (i = 0; i < vc->mapping_count; ++i) { |
783 |
122 |
vorbis_mapping *mapping_setup = &vc->mappings[i]; |
|
784 |
|||
785 |
✗✓ | 122 |
if (get_bits(gb, 16)) { |
786 |
av_log(vc->avctx, AV_LOG_ERROR, "Other mappings than type 0 are not compliant with the Vorbis I specification. \n"); |
||
787 |
return AVERROR_INVALIDDATA; |
||
788 |
} |
||
789 |
✓✓ | 122 |
if (get_bits1(gb)) { |
790 |
4 |
mapping_setup->submaps = get_bits(gb, 4) + 1; |
|
791 |
} else { |
||
792 |
118 |
mapping_setup->submaps = 1; |
|
793 |
} |
||
794 |
|||
795 |
✓✓ | 122 |
if (get_bits1(gb)) { |
796 |
50 |
mapping_setup->coupling_steps = get_bits(gb, 8) + 1; |
|
797 |
✗✓ | 50 |
if (vc->audio_channels < 2) { |
798 |
av_log(vc->avctx, AV_LOG_ERROR, |
||
799 |
"Square polar channel mapping with less than two channels is not compliant with the Vorbis I specification.\n"); |
||
800 |
return AVERROR_INVALIDDATA; |
||
801 |
} |
||
802 |
50 |
mapping_setup->magnitude = av_mallocz(mapping_setup->coupling_steps * |
|
803 |
sizeof(*mapping_setup->magnitude)); |
||
804 |
50 |
mapping_setup->angle = av_mallocz(mapping_setup->coupling_steps * |
|
805 |
sizeof(*mapping_setup->angle)); |
||
806 |
✓✗✗✓ |
50 |
if (!mapping_setup->angle || !mapping_setup->magnitude) |
807 |
return AVERROR(ENOMEM); |
||
808 |
|||
809 |
✓✓ | 112 |
for (j = 0; j < mapping_setup->coupling_steps; ++j) { |
810 |
✗✓ | 62 |
GET_VALIDATED_INDEX(mapping_setup->magnitude[j], ilog(vc->audio_channels - 1), vc->audio_channels) |
811 |
✗✓ | 62 |
GET_VALIDATED_INDEX(mapping_setup->angle[j], ilog(vc->audio_channels - 1), vc->audio_channels) |
812 |
} |
||
813 |
} else { |
||
814 |
72 |
mapping_setup->coupling_steps = 0; |
|
815 |
} |
||
816 |
|||
817 |
ff_dlog(NULL, " %u mapping coupling steps: %d\n", |
||
818 |
i, mapping_setup->coupling_steps); |
||
819 |
|||
820 |
✗✓ | 122 |
if (get_bits(gb, 2)) { |
821 |
av_log(vc->avctx, AV_LOG_ERROR, "%u. mapping setup data invalid.\n", i); |
||
822 |
return AVERROR_INVALIDDATA; // following spec. |
||
823 |
} |
||
824 |
|||
825 |
✓✓ | 122 |
if (mapping_setup->submaps>1) { |
826 |
4 |
mapping_setup->mux = av_mallocz_array(vc->audio_channels, |
|
827 |
sizeof(*mapping_setup->mux)); |
||
828 |
✗✓ | 4 |
if (!mapping_setup->mux) |
829 |
return AVERROR(ENOMEM); |
||
830 |
|||
831 |
✓✓ | 28 |
for (j = 0; j < vc->audio_channels; ++j) |
832 |
24 |
mapping_setup->mux[j] = get_bits(gb, 4); |
|
833 |
} |
||
834 |
|||
835 |
✓✓ | 248 |
for (j = 0; j < mapping_setup->submaps; ++j) { |
836 |
126 |
skip_bits(gb, 8); // FIXME check? |
|
837 |
✗✓ | 126 |
GET_VALIDATED_INDEX(mapping_setup->submap_floor[j], 8, vc->floor_count) |
838 |
✗✓ | 126 |
GET_VALIDATED_INDEX(mapping_setup->submap_residue[j], 8, vc->residue_count) |
839 |
|||
840 |
ff_dlog(NULL, " %u mapping %u submap : floor %d, residue %d\n", i, j, |
||
841 |
mapping_setup->submap_floor[j], |
||
842 |
mapping_setup->submap_residue[j]); |
||
843 |
} |
||
844 |
} |
||
845 |
62 |
return 0; |
|
846 |
} |
||
847 |
|||
848 |
// Process modes part |
||
849 |
|||
850 |
44 |
static int create_map(vorbis_context *vc, unsigned floor_number) |
|
851 |
{ |
||
852 |
44 |
vorbis_floor *floors = vc->floors; |
|
853 |
vorbis_floor0 *vf; |
||
854 |
int idx; |
||
855 |
int blockflag, n; |
||
856 |
int32_t *map; |
||
857 |
|||
858 |
✓✓ | 132 |
for (blockflag = 0; blockflag < 2; ++blockflag) { |
859 |
88 |
n = vc->blocksize[blockflag] / 2; |
|
860 |
176 |
floors[floor_number].data.t0.map[blockflag] = |
|
861 |
88 |
av_malloc_array(n + 1, sizeof(int32_t)); // n + sentinel |
|
862 |
✗✓ | 88 |
if (!floors[floor_number].data.t0.map[blockflag]) |
863 |
return AVERROR(ENOMEM); |
||
864 |
|||
865 |
88 |
map = floors[floor_number].data.t0.map[blockflag]; |
|
866 |
88 |
vf = &floors[floor_number].data.t0; |
|
867 |
|||
868 |
✓✓ | 51288 |
for (idx = 0; idx < n; ++idx) { |
869 |
51200 |
map[idx] = floor(BARK((vf->rate * idx) / (2.0f * n)) * |
|
870 |
51200 |
(vf->bark_map_size / BARK(vf->rate / 2.0f))); |
|
871 |
✗✓ | 51200 |
if (vf->bark_map_size-1 < map[idx]) |
872 |
map[idx] = vf->bark_map_size - 1; |
||
873 |
} |
||
874 |
88 |
map[n] = -1; |
|
875 |
88 |
vf->map_size[blockflag] = n; |
|
876 |
} |
||
877 |
|||
878 |
✓✓ | 45144 |
for (idx = 0; idx <= n; ++idx) { |
879 |
ff_dlog(NULL, "floor0 map: map at pos %d is %"PRId32"\n", idx, map[idx]); |
||
880 |
} |
||
881 |
|||
882 |
44 |
return 0; |
|
883 |
} |
||
884 |
|||
885 |
62 |
static int vorbis_parse_setup_hdr_modes(vorbis_context *vc) |
|
886 |
{ |
||
887 |
62 |
GetBitContext *gb = &vc->gb; |
|
888 |
unsigned i; |
||
889 |
|||
890 |
62 |
vc->mode_count = get_bits(gb, 6) + 1; |
|
891 |
62 |
vc->modes = av_mallocz(vc->mode_count * sizeof(*vc->modes)); |
|
892 |
✗✓ | 62 |
if (!vc->modes) |
893 |
return AVERROR(ENOMEM); |
||
894 |
|||
895 |
ff_dlog(NULL, " There are %d modes.\n", vc->mode_count); |
||
896 |
|||
897 |
✓✓ | 186 |
for (i = 0; i < vc->mode_count; ++i) { |
898 |
124 |
vorbis_mode *mode_setup = &vc->modes[i]; |
|
899 |
|||
900 |
124 |
mode_setup->blockflag = get_bits1(gb); |
|
901 |
124 |
mode_setup->windowtype = get_bits(gb, 16); //FIXME check |
|
902 |
124 |
mode_setup->transformtype = get_bits(gb, 16); //FIXME check |
|
903 |
✗✓ | 124 |
GET_VALIDATED_INDEX(mode_setup->mapping, 8, vc->mapping_count); |
904 |
|||
905 |
ff_dlog(NULL, " %u mode: blockflag %d, windowtype %d, transformtype %d, mapping %d\n", |
||
906 |
i, mode_setup->blockflag, mode_setup->windowtype, |
||
907 |
mode_setup->transformtype, mode_setup->mapping); |
||
908 |
} |
||
909 |
62 |
return 0; |
|
910 |
} |
||
911 |
|||
912 |
// Process the whole setup header using the functions above |
||
913 |
|||
914 |
62 |
static int vorbis_parse_setup_hdr(vorbis_context *vc) |
|
915 |
{ |
||
916 |
62 |
GetBitContext *gb = &vc->gb; |
|
917 |
int ret; |
||
918 |
|||
919 |
✓✗✓✗ ✓✗ |
124 |
if ((get_bits(gb, 8) != 'v') || (get_bits(gb, 8) != 'o') || |
920 |
✓✗✓✗ |
186 |
(get_bits(gb, 8) != 'r') || (get_bits(gb, 8) != 'b') || |
921 |
✗✓ | 124 |
(get_bits(gb, 8) != 'i') || (get_bits(gb, 8) != 's')) { |
922 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis setup header packet corrupt (no vorbis signature). \n"); |
||
923 |
return AVERROR_INVALIDDATA; |
||
924 |
} |
||
925 |
|||
926 |
✗✓ | 62 |
if ((ret = vorbis_parse_setup_hdr_codebooks(vc))) { |
927 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis setup header packet corrupt (codebooks). \n"); |
||
928 |
return ret; |
||
929 |
} |
||
930 |
✗✓ | 62 |
if ((ret = vorbis_parse_setup_hdr_tdtransforms(vc))) { |
931 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis setup header packet corrupt (time domain transforms). \n"); |
||
932 |
return ret; |
||
933 |
} |
||
934 |
✗✓ | 62 |
if ((ret = vorbis_parse_setup_hdr_floors(vc))) { |
935 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis setup header packet corrupt (floors). \n"); |
||
936 |
return ret; |
||
937 |
} |
||
938 |
✗✓ | 62 |
if ((ret = vorbis_parse_setup_hdr_residues(vc))) { |
939 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis setup header packet corrupt (residues). \n"); |
||
940 |
return ret; |
||
941 |
} |
||
942 |
✗✓ | 62 |
if ((ret = vorbis_parse_setup_hdr_mappings(vc))) { |
943 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis setup header packet corrupt (mappings). \n"); |
||
944 |
return ret; |
||
945 |
} |
||
946 |
✗✓ | 62 |
if ((ret = vorbis_parse_setup_hdr_modes(vc))) { |
947 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis setup header packet corrupt (modes). \n"); |
||
948 |
return ret; |
||
949 |
} |
||
950 |
✗✓ | 62 |
if (!get_bits1(gb)) { |
951 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis setup header packet corrupt (framing flag). \n"); |
||
952 |
return AVERROR_INVALIDDATA; // framing flag bit unset error |
||
953 |
} |
||
954 |
|||
955 |
62 |
return 0; |
|
956 |
} |
||
957 |
|||
958 |
// Process the identification header |
||
959 |
|||
960 |
62 |
static int vorbis_parse_id_hdr(vorbis_context *vc) |
|
961 |
{ |
||
962 |
62 |
GetBitContext *gb = &vc->gb; |
|
963 |
unsigned bl0, bl1; |
||
964 |
|||
965 |
✓✗✓✗ ✓✗ |
124 |
if ((get_bits(gb, 8) != 'v') || (get_bits(gb, 8) != 'o') || |
966 |
✓✗✓✗ |
186 |
(get_bits(gb, 8) != 'r') || (get_bits(gb, 8) != 'b') || |
967 |
✗✓ | 124 |
(get_bits(gb, 8) != 'i') || (get_bits(gb, 8) != 's')) { |
968 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis id header packet corrupt (no vorbis signature). \n"); |
||
969 |
return AVERROR_INVALIDDATA; |
||
970 |
} |
||
971 |
|||
972 |
62 |
vc->version = get_bits_long(gb, 32); //FIXME check 0 |
|
973 |
62 |
vc->audio_channels = get_bits(gb, 8); |
|
974 |
✗✓ | 62 |
if (vc->audio_channels <= 0) { |
975 |
av_log(vc->avctx, AV_LOG_ERROR, "Invalid number of channels\n"); |
||
976 |
return AVERROR_INVALIDDATA; |
||
977 |
} |
||
978 |
62 |
vc->audio_samplerate = get_bits_long(gb, 32); |
|
979 |
✗✓ | 62 |
if (vc->audio_samplerate <= 0) { |
980 |
av_log(vc->avctx, AV_LOG_ERROR, "Invalid samplerate\n"); |
||
981 |
return AVERROR_INVALIDDATA; |
||
982 |
} |
||
983 |
62 |
vc->bitrate_maximum = get_bits_long(gb, 32); |
|
984 |
62 |
vc->bitrate_nominal = get_bits_long(gb, 32); |
|
985 |
62 |
vc->bitrate_minimum = get_bits_long(gb, 32); |
|
986 |
62 |
bl0 = get_bits(gb, 4); |
|
987 |
62 |
bl1 = get_bits(gb, 4); |
|
988 |
✓✗✓✗ ✓✗✓✗ ✗✓ |
62 |
if (bl0 > 13 || bl0 < 6 || bl1 > 13 || bl1 < 6 || bl1 < bl0) { |
989 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis id header packet corrupt (illegal blocksize). \n"); |
||
990 |
return AVERROR_INVALIDDATA; |
||
991 |
} |
||
992 |
62 |
vc->blocksize[0] = (1 << bl0); |
|
993 |
62 |
vc->blocksize[1] = (1 << bl1); |
|
994 |
62 |
vc->win[0] = ff_vorbis_vwin[bl0 - 6]; |
|
995 |
62 |
vc->win[1] = ff_vorbis_vwin[bl1 - 6]; |
|
996 |
|||
997 |
✗✓ | 62 |
if ((get_bits1(gb)) == 0) { |
998 |
av_log(vc->avctx, AV_LOG_ERROR, " Vorbis id header packet corrupt (framing flag not set). \n"); |
||
999 |
return AVERROR_INVALIDDATA; |
||
1000 |
} |
||
1001 |
|||
1002 |
62 |
vc->channel_residues = av_malloc_array(vc->blocksize[1] / 2, vc->audio_channels * sizeof(*vc->channel_residues)); |
|
1003 |
62 |
vc->saved = av_mallocz_array(vc->blocksize[1] / 4, vc->audio_channels * sizeof(*vc->saved)); |
|
1004 |
✓✗✗✓ |
62 |
if (!vc->channel_residues || !vc->saved) |
1005 |
return AVERROR(ENOMEM); |
||
1006 |
|||
1007 |
62 |
vc->previous_window = -1; |
|
1008 |
|||
1009 |
62 |
ff_mdct_init(&vc->mdct[0], bl0, 1, -1.0); |
|
1010 |
62 |
ff_mdct_init(&vc->mdct[1], bl1, 1, -1.0); |
|
1011 |
62 |
vc->fdsp = avpriv_float_dsp_alloc(vc->avctx->flags & AV_CODEC_FLAG_BITEXACT); |
|
1012 |
✗✓ | 62 |
if (!vc->fdsp) |
1013 |
return AVERROR(ENOMEM); |
||
1014 |
|||
1015 |
ff_dlog(NULL, " vorbis version %"PRIu32" \n audio_channels %"PRIu8" \n audio_samplerate %"PRIu32" \n bitrate_max %"PRIu32" \n bitrate_nom %"PRIu32" \n bitrate_min %"PRIu32" \n blk_0 %"PRIu32" blk_1 %"PRIu32" \n ", |
||
1016 |
vc->version, vc->audio_channels, vc->audio_samplerate, vc->bitrate_maximum, vc->bitrate_nominal, vc->bitrate_minimum, vc->blocksize[0], vc->blocksize[1]); |
||
1017 |
|||
1018 |
/* |
||
1019 |
BLK = vc->blocksize[0]; |
||
1020 |
for (i = 0; i < BLK / 2; ++i) { |
||
1021 |
vc->win[0][i] = sin(0.5*3.14159265358*(sin(((float)i + 0.5) / (float)BLK*3.14159265358))*(sin(((float)i + 0.5) / (float)BLK*3.14159265358))); |
||
1022 |
} |
||
1023 |
*/ |
||
1024 |
|||
1025 |
62 |
return 0; |
|
1026 |
} |
||
1027 |
|||
1028 |
// Process the extradata using the functions above (identification header, setup header) |
||
1029 |
|||
1030 |
62 |
static av_cold int vorbis_decode_init(AVCodecContext *avctx) |
|
1031 |
{ |
||
1032 |
62 |
vorbis_context *vc = avctx->priv_data; |
|
1033 |
62 |
uint8_t *headers = avctx->extradata; |
|
1034 |
62 |
int headers_len = avctx->extradata_size; |
|
1035 |
const uint8_t *header_start[3]; |
||
1036 |
int header_len[3]; |
||
1037 |
62 |
GetBitContext *gb = &vc->gb; |
|
1038 |
int hdr_type, ret; |
||
1039 |
|||
1040 |
62 |
vc->avctx = avctx; |
|
1041 |
62 |
ff_vorbisdsp_init(&vc->dsp); |
|
1042 |
|||
1043 |
62 |
avctx->sample_fmt = AV_SAMPLE_FMT_FLTP; |
|
1044 |
|||
1045 |
✗✓ | 62 |
if (!headers_len) { |
1046 |
av_log(avctx, AV_LOG_ERROR, "Extradata missing.\n"); |
||
1047 |
return AVERROR_INVALIDDATA; |
||
1048 |
} |
||
1049 |
|||
1050 |
✗✓ | 62 |
if ((ret = avpriv_split_xiph_headers(headers, headers_len, 30, header_start, header_len)) < 0) { |
1051 |
av_log(avctx, AV_LOG_ERROR, "Extradata corrupt.\n"); |
||
1052 |
return ret; |
||
1053 |
} |
||
1054 |
|||
1055 |
62 |
init_get_bits(gb, header_start[0], header_len[0]*8); |
|
1056 |
62 |
hdr_type = get_bits(gb, 8); |
|
1057 |
✗✓ | 62 |
if (hdr_type != 1) { |
1058 |
av_log(avctx, AV_LOG_ERROR, "First header is not the id header.\n"); |
||
1059 |
return AVERROR_INVALIDDATA; |
||
1060 |
} |
||
1061 |
✗✓ | 62 |
if ((ret = vorbis_parse_id_hdr(vc))) { |
1062 |
av_log(avctx, AV_LOG_ERROR, "Id header corrupt.\n"); |
||
1063 |
vorbis_free(vc); |
||
1064 |
return ret; |
||
1065 |
} |
||
1066 |
|||
1067 |
62 |
init_get_bits(gb, header_start[2], header_len[2]*8); |
|
1068 |
62 |
hdr_type = get_bits(gb, 8); |
|
1069 |
✗✓ | 62 |
if (hdr_type != 5) { |
1070 |
av_log(avctx, AV_LOG_ERROR, "Third header is not the setup header.\n"); |
||
1071 |
vorbis_free(vc); |
||
1072 |
return AVERROR_INVALIDDATA; |
||
1073 |
} |
||
1074 |
✗✓ | 62 |
if ((ret = vorbis_parse_setup_hdr(vc))) { |
1075 |
av_log(avctx, AV_LOG_ERROR, "Setup header corrupt.\n"); |
||
1076 |
vorbis_free(vc); |
||
1077 |
return ret; |
||
1078 |
} |
||
1079 |
|||
1080 |
✗✓ | 62 |
if (vc->audio_channels > 8) |
1081 |
avctx->channel_layout = 0; |
||
1082 |
else |
||
1083 |
62 |
avctx->channel_layout = ff_vorbis_channel_layouts[vc->audio_channels - 1]; |
|
1084 |
|||
1085 |
62 |
avctx->channels = vc->audio_channels; |
|
1086 |
62 |
avctx->sample_rate = vc->audio_samplerate; |
|
1087 |
|||
1088 |
62 |
return 0; |
|
1089 |
} |
||
1090 |
|||
1091 |
// Decode audiopackets ------------------------------------------------- |
||
1092 |
|||
1093 |
// Read and decode floor |
||
1094 |
|||
1095 |
6375 |
static int vorbis_floor0_decode(vorbis_context *vc, |
|
1096 |
vorbis_floor_data *vfu, float *vec) |
||
1097 |
{ |
||
1098 |
6375 |
vorbis_floor0 *vf = &vfu->t0; |
|
1099 |
6375 |
float *lsp = vf->lsp; |
|
1100 |
unsigned book_idx; |
||
1101 |
uint64_t amplitude; |
||
1102 |
6375 |
unsigned blockflag = vc->modes[vc->mode_number].blockflag; |
|
1103 |
|||
1104 |
✗✓ | 6375 |
if (!vf->amplitude_bits) |
1105 |
return 1; |
||
1106 |
|||
1107 |
6375 |
amplitude = get_bits64(&vc->gb, vf->amplitude_bits); |
|
1108 |
✓✓ | 6375 |
if (amplitude > 0) { |
1109 |
6251 |
float last = 0; |
|
1110 |
6251 |
unsigned idx, lsp_len = 0; |
|
1111 |
vorbis_codebook codebook; |
||
1112 |
|||
1113 |
6251 |
book_idx = get_bits(&vc->gb, ilog(vf->num_books)); |
|
1114 |
✗✓ | 6251 |
if (book_idx >= vf->num_books) { |
1115 |
av_log(vc->avctx, AV_LOG_ERROR, "floor0 dec: booknumber too high!\n"); |
||
1116 |
book_idx = 0; |
||
1117 |
} |
||
1118 |
ff_dlog(NULL, "floor0 dec: booknumber: %u\n", book_idx); |
||
1119 |
6251 |
codebook = vc->codebooks[vf->book_list[book_idx]]; |
|
1120 |
/* Invalid codebook! */ |
||
1121 |
✗✓ | 6251 |
if (!codebook.codevectors) |
1122 |
return AVERROR_INVALIDDATA; |
||
1123 |
|||
1124 |
✓✓ | 56599 |
while (lsp_len<vf->order) { |
1125 |
int vec_off; |
||
1126 |
|||
1127 |
ff_dlog(NULL, "floor0 dec: book dimension: %d\n", codebook.dimensions); |
||
1128 |
ff_dlog(NULL, "floor0 dec: maximum depth: %d\n", codebook.maxdepth); |
||
1129 |
/* read temp vector */ |
||
1130 |
50348 |
vec_off = get_vlc2(&vc->gb, codebook.vlc.table, |
|
1131 |
50348 |
codebook.nb_bits, codebook.maxdepth); |
|
1132 |
✗✓ | 50348 |
if (vec_off < 0) |
1133 |
return AVERROR_INVALIDDATA; |
||
1134 |
50348 |
vec_off *= codebook.dimensions; |
|
1135 |
ff_dlog(NULL, "floor0 dec: vector offset: %d\n", vec_off); |
||
1136 |
/* copy each vector component and add last to it */ |
||
1137 |
✓✓ | 195920 |
for (idx = 0; idx < codebook.dimensions; ++idx) |
1138 |
145572 |
lsp[lsp_len+idx] = codebook.codevectors[vec_off+idx] + last; |
|
1139 |
50348 |
last = lsp[lsp_len+idx-1]; /* set last to last vector component */ |
|
1140 |
|||
1141 |
50348 |
lsp_len += codebook.dimensions; |
|
1142 |
} |
||
1143 |
/* DEBUG: output lsp coeffs */ |
||
1144 |
{ |
||
1145 |
int idx; |
||
1146 |
✓✓ | 151823 |
for (idx = 0; idx < lsp_len; ++idx) |
1147 |
ff_dlog(NULL, "floor0 dec: coeff at %d is %f\n", idx, lsp[idx]); |
||
1148 |
} |
||
1149 |
|||
1150 |
/* synthesize floor output vector */ |
||
1151 |
{ |
||
1152 |
int i; |
||
1153 |
6251 |
int order = vf->order; |
|
1154 |
6251 |
float wstep = M_PI / vf->bark_map_size; |
|
1155 |
|||
1156 |
✓✓ | 151823 |
for (i = 0; i < order; i++) |
1157 |
145572 |
lsp[i] = 2.0f * cos(lsp[i]); |
|
1158 |
|||
1159 |
ff_dlog(NULL, "floor0 synth: map_size = %"PRIu32"; m = %d; wstep = %f\n", |
||
1160 |
vf->map_size[blockflag], order, wstep); |
||
1161 |
|||
1162 |
6251 |
i = 0; |
|
1163 |
✓✓ | 945341 |
while (i < vf->map_size[blockflag]) { |
1164 |
939090 |
int j, iter_cond = vf->map[blockflag][i]; |
|
1165 |
939090 |
float p = 0.5f; |
|
1166 |
939090 |
float q = 0.5f; |
|
1167 |
939090 |
float two_cos_w = 2.0f * cos(wstep * iter_cond); // needed all times |
|
1168 |
|||
1169 |
/* similar part for the q and p products */ |
||
1170 |
✓✓ | 14107686 |
for (j = 0; j + 1 < order; j += 2) { |
1171 |
13168596 |
q *= lsp[j] - two_cos_w; |
|
1172 |
13168596 |
p *= lsp[j + 1] - two_cos_w; |
|
1173 |
} |
||
1174 |
✓✓ | 939090 |
if (j == order) { // even order |
1175 |
925416 |
p *= p * (2.0f - two_cos_w); |
|
1176 |
925416 |
q *= q * (2.0f + two_cos_w); |
|
1177 |
} else { // odd order |
||
1178 |
13674 |
q *= two_cos_w-lsp[j]; // one more time for q |
|
1179 |
|||
1180 |
/* final step and square */ |
||
1181 |
13674 |
p *= p * (4.f - two_cos_w * two_cos_w); |
|
1182 |
13674 |
q *= q; |
|
1183 |
} |
||
1184 |
|||
1185 |
✗✓ | 939090 |
if (p + q == 0.0) |
1186 |
return AVERROR_INVALIDDATA; |
||
1187 |
|||
1188 |
/* calculate linear floor value */ |
||
1189 |
939090 |
q = exp((((amplitude*vf->amplitude_offset) / |
|
1190 |
939090 |
(((1ULL << vf->amplitude_bits) - 1) * sqrt(p + q))) |
|
1191 |
939090 |
- vf->amplitude_offset) * .11512925f); |
|
1192 |
|||
1193 |
/* fill vector */ |
||
1194 |
do { |
||
1195 |
4384000 |
vec[i] = q; ++i; |
|
1196 |
✓✓ | 4384000 |
} while (vf->map[blockflag][i] == iter_cond); |
1197 |
} |
||
1198 |
} |
||
1199 |
} else { |
||
1200 |
/* this channel is unused */ |
||
1201 |
124 |
return 1; |
|
1202 |
} |
||
1203 |
|||
1204 |
ff_dlog(NULL, " Floor0 decoded\n"); |
||
1205 |
|||
1206 |
6251 |
return 0; |
|
1207 |
} |
||
1208 |
|||
1209 |
11458 |
static int vorbis_floor1_decode(vorbis_context *vc, |
|
1210 |
vorbis_floor_data *vfu, float *vec) |
||
1211 |
{ |
||
1212 |
11458 |
vorbis_floor1 *vf = &vfu->t1; |
|
1213 |
11458 |
GetBitContext *gb = &vc->gb; |
|
1214 |
11458 |
uint16_t range_v[4] = { 256, 128, 86, 64 }; |
|
1215 |
11458 |
unsigned range = range_v[vf->multiplier - 1]; |
|
1216 |
uint16_t floor1_Y[258]; |
||
1217 |
uint16_t floor1_Y_final[258]; |
||
1218 |
int floor1_flag[258]; |
||
1219 |
unsigned partition_class, cdim, cbits, csub, cval, offset, i, j; |
||
1220 |
int book, adx, ady, dy, off, predicted, err; |
||
1221 |
|||
1222 |
|||
1223 |
✓✓ | 11458 |
if (!get_bits1(gb)) // silence |
1224 |
2001 |
return 1; |
|
1225 |
|||
1226 |
// Read values (or differences) for the floor's points |
||
1227 |
|||
1228 |
9457 |
floor1_Y[0] = get_bits(gb, ilog(range - 1)); |
|
1229 |
9457 |
floor1_Y[1] = get_bits(gb, ilog(range - 1)); |
|
1230 |
|||
1231 |
ff_dlog(NULL, "floor 0 Y %d floor 1 Y %d \n", floor1_Y[0], floor1_Y[1]); |
||
1232 |
|||
1233 |
9457 |
offset = 2; |
|
1234 |
✓✓ | 78225 |
for (i = 0; i < vf->partitions; ++i) { |
1235 |
68768 |
partition_class = vf->partition_class[i]; |
|
1236 |
68768 |
cdim = vf->class_dimensions[partition_class]; |
|
1237 |
68768 |
cbits = vf->class_subclasses[partition_class]; |
|
1238 |
68768 |
csub = (1 << cbits) - 1; |
|
1239 |
68768 |
cval = 0; |
|
1240 |
|||
1241 |
ff_dlog(NULL, "Cbits %u\n", cbits); |
||
1242 |
|||
1243 |
✓✓ | 68768 |
if (cbits) // this reads all subclasses for this partition's class |
1244 |
62848 |
cval = get_vlc2(gb, vc->codebooks[vf->class_masterbook[partition_class]].vlc.table, |
|
1245 |
62848 |
vc->codebooks[vf->class_masterbook[partition_class]].nb_bits, 3); |
|
1246 |
|||
1247 |
✓✓ | 285132 |
for (j = 0; j < cdim; ++j) { |
1248 |
216364 |
book = vf->subclass_books[partition_class][cval & csub]; |
|
1249 |
|||
1250 |
ff_dlog(NULL, "book %d Cbits %u cval %u bits:%d\n", |
||
1251 |
book, cbits, cval, get_bits_count(gb)); |
||
1252 |
|||
1253 |
216364 |
cval = cval >> cbits; |
|
1254 |
✓✓ | 216364 |
if (book > -1) { |
1255 |
113880 |
int v = get_vlc2(gb, vc->codebooks[book].vlc.table, |
|
1256 |
113880 |
vc->codebooks[book].nb_bits, 3); |
|
1257 |
✗✓ | 113880 |
if (v < 0) |
1258 |
return AVERROR_INVALIDDATA; |
||
1259 |
113880 |
floor1_Y[offset+j] = v; |
|
1260 |
} else { |
||
1261 |
102484 |
floor1_Y[offset+j] = 0; |
|
1262 |
} |
||
1263 |
|||
1264 |
ff_dlog(NULL, " floor(%d) = %d \n", |
||
1265 |
vf->list[offset+j].x, floor1_Y[offset+j]); |
||
1266 |
} |
||
1267 |
68768 |
offset+=cdim; |
|
1268 |
} |
||
1269 |
|||
1270 |
// Amplitude calculation from the differences |
||
1271 |
|||
1272 |
9457 |
floor1_flag[0] = 1; |
|
1273 |
9457 |
floor1_flag[1] = 1; |
|
1274 |
9457 |
floor1_Y_final[0] = floor1_Y[0]; |
|
1275 |
9457 |
floor1_Y_final[1] = floor1_Y[1]; |
|
1276 |
|||
1277 |
✓✓ | 225821 |
for (i = 2; i < vf->x_list_dim; ++i) { |
1278 |
unsigned val, highroom, lowroom, room, high_neigh_offs, low_neigh_offs; |
||
1279 |
|||
1280 |
216364 |
low_neigh_offs = vf->list[i].low; |
|
1281 |
216364 |
high_neigh_offs = vf->list[i].high; |
|
1282 |
216364 |
dy = floor1_Y_final[high_neigh_offs] - floor1_Y_final[low_neigh_offs]; // render_point begin |
|
1283 |
216364 |
adx = vf->list[high_neigh_offs].x - vf->list[low_neigh_offs].x; |
|
1284 |
216364 |
ady = FFABS(dy); |
|
1285 |
216364 |
err = ady * (vf->list[i].x - vf->list[low_neigh_offs].x); |
|
1286 |
216364 |
off = err / adx; |
|
1287 |
✓✓ | 216364 |
if (dy < 0) { |
1288 |
119479 |
predicted = floor1_Y_final[low_neigh_offs] - off; |
|
1289 |
} else { |
||
1290 |
96885 |
predicted = floor1_Y_final[low_neigh_offs] + off; |
|
1291 |
} // render_point end |
||
1292 |
|||
1293 |
216364 |
val = floor1_Y[i]; |
|
1294 |
216364 |
highroom = range-predicted; |
|
1295 |
216364 |
lowroom = predicted; |
|
1296 |
✓✓ | 216364 |
if (highroom < lowroom) { |
1297 |
87980 |
room = highroom * 2; |
|
1298 |
} else { |
||
1299 |
128384 |
room = lowroom * 2; // SPEC misspelling |
|
1300 |
} |
||
1301 |
✓✓ | 216364 |
if (val) { |
1302 |
97974 |
floor1_flag[low_neigh_offs] = 1; |
|
1303 |
97974 |
floor1_flag[high_neigh_offs] = 1; |
|
1304 |
97974 |
floor1_flag[i] = 1; |
|
1305 |
✓✓ | 97974 |
if (val >= room) { |
1306 |
✓✓ | 108 |
if (highroom > lowroom) { |
1307 |
80 |
floor1_Y_final[i] = av_clip_uint16(val - lowroom + predicted); |
|
1308 |
} else { |
||
1309 |
28 |
floor1_Y_final[i] = av_clip_uint16(predicted - val + highroom - 1); |
|
1310 |
} |
||
1311 |
} else { |
||
1312 |
✓✓ | 97866 |
if (val & 1) { |
1313 |
63514 |
floor1_Y_final[i] = av_clip_uint16(predicted - (val + 1) / 2); |
|
1314 |
} else { |
||
1315 |
34352 |
floor1_Y_final[i] = av_clip_uint16(predicted + val / 2); |
|
1316 |
} |
||
1317 |
} |
||
1318 |
} else { |
||
1319 |
118390 |
floor1_flag[i] = 0; |
|
1320 |
118390 |
floor1_Y_final[i] = av_clip_uint16(predicted); |
|
1321 |
} |
||
1322 |
|||
1323 |
ff_dlog(NULL, " Decoded floor(%d) = %u / val %u\n", |
||
1324 |
vf->list[i].x, floor1_Y_final[i], val); |
||
1325 |
} |
||
1326 |
|||
1327 |
// Curve synth - connect the calculated dots and convert from dB scale FIXME optimize ? |
||
1328 |
|||
1329 |
9457 |
ff_vorbis_floor1_render_list(vf->list, vf->x_list_dim, floor1_Y_final, floor1_flag, vf->multiplier, vec, vf->list[1].x); |
|
1330 |
|||
1331 |
ff_dlog(NULL, " Floor decoded\n"); |
||
1332 |
|||
1333 |
9457 |
return 0; |
|
1334 |
} |
||
1335 |
|||
1336 |
134533 |
static av_always_inline int setup_classifs(vorbis_context *vc, |
|
1337 |
vorbis_residue *vr, |
||
1338 |
uint8_t *do_not_decode, |
||
1339 |
unsigned ch_used, |
||
1340 |
int partition_count, |
||
1341 |
int ptns_to_read |
||
1342 |
) |
||
1343 |
{ |
||
1344 |
134533 |
vorbis_codebook *codebook = vc->codebooks + vr->classbook; |
|
1345 |
int p, j, i; |
||
1346 |
134533 |
unsigned c_p_c = codebook->dimensions; |
|
1347 |
134533 |
unsigned inverse_class = ff_inverse[vr->classifications]; |
|
1348 |
int temp, temp2; |
||
1349 |
✓✓ | 298319 |
for (p = 0, j = 0; j < ch_used; ++j) { |
1350 |
✓✓ | 163786 |
if (!do_not_decode[j]) { |
1351 |
162465 |
temp = get_vlc2(&vc->gb, codebook->vlc.table, |
|
1352 |
162465 |
codebook->nb_bits, 3); |
|
1353 |
|||
1354 |
ff_dlog(NULL, "Classword: %u\n", temp); |
||
1355 |
|||
1356 |
✗✓ | 162465 |
av_assert0(temp < 65536); |
1357 |
|||
1358 |
✗✓ | 162465 |
if (temp < 0) { |
1359 |
av_log(vc->avctx, AV_LOG_ERROR, |
||
1360 |
"Invalid vlc code decoding %d channel.", j); |
||
1361 |
return AVERROR_INVALIDDATA; |
||
1362 |
} |
||
1363 |
|||
1364 |
✗✓ | 162465 |
if (vr->classifications == 1) { |
1365 |
for (i = partition_count + c_p_c - 1; i >= partition_count; i--) { |
||
1366 |
if (i < ptns_to_read) |
||
1367 |
vr->classifs[p + i] = 0; |
||
1368 |
} |
||
1369 |
} else { |
||
1370 |
✓✓ | 506512 |
for (i = partition_count + c_p_c - 1; i >= partition_count; i--) { |
1371 |
344047 |
temp2 = (((uint64_t)temp) * inverse_class) >> 32; |
|
1372 |
|||
1373 |
✓✓ | 344047 |
if (i < ptns_to_read) |
1374 |
343834 |
vr->classifs[p + i] = temp - temp2 * vr->classifications; |
|
1375 |
344047 |
temp = temp2; |
|
1376 |
} |
||
1377 |
} |
||
1378 |
} |
||
1379 |
163786 |
p += ptns_to_read; |
|
1380 |
} |
||
1381 |
134533 |
return 0; |
|
1382 |
} |
||
1383 |
// Read and decode residue |
||
1384 |
|||
1385 |
9491 |
static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc, |
|
1386 |
vorbis_residue *vr, |
||
1387 |
unsigned ch, |
||
1388 |
uint8_t *do_not_decode, |
||
1389 |
float *vec, |
||
1390 |
unsigned vlen, |
||
1391 |
unsigned ch_left, |
||
1392 |
int vr_type) |
||
1393 |
{ |
||
1394 |
9491 |
GetBitContext *gb = &vc->gb; |
|
1395 |
9491 |
unsigned c_p_c = vc->codebooks[vr->classbook].dimensions; |
|
1396 |
9491 |
uint8_t *classifs = vr->classifs; |
|
1397 |
unsigned pass, ch_used, i, j, k, l; |
||
1398 |
9491 |
unsigned max_output = (ch - 1) * vlen; |
|
1399 |
9491 |
int ptns_to_read = vr->ptns_to_read; |
|
1400 |
9491 |
int libvorbis_bug = 0; |
|
1401 |
|||
1402 |
✓✓ | 9491 |
if (vr_type == 2) { |
1403 |
✓✓ | 9661 |
for (j = 1; j < ch; ++j) |
1404 |
5387 |
do_not_decode[0] &= do_not_decode[j]; // FIXME - clobbering input |
|
1405 |
✓✓ | 4274 |
if (do_not_decode[0]) |
1406 |
120 |
return 0; |
|
1407 |
4154 |
ch_used = 1; |
|
1408 |
4154 |
max_output += vr->end / ch; |
|
1409 |
} else { |
||
1410 |
5217 |
ch_used = ch; |
|
1411 |
5217 |
max_output += vr->end; |
|
1412 |
} |
||
1413 |
|||
1414 |
✗✓ | 9371 |
if (max_output > ch_left * vlen) { |
1415 |
if (max_output <= ch_left * vlen + vr->partition_size*ch_used/ch) { |
||
1416 |
ptns_to_read--; |
||
1417 |
libvorbis_bug = 1; |
||
1418 |
} else { |
||
1419 |
av_log(vc->avctx, AV_LOG_ERROR, "Insufficient output buffer\n"); |
||
1420 |
return AVERROR_INVALIDDATA; |
||
1421 |
} |
||
1422 |
} |
||
1423 |
|||
1424 |
ff_dlog(NULL, " residue type 0/1/2 decode begin, ch: %d cpc %d \n", ch, c_p_c); |
||
1425 |
|||
1426 |
✓✓ | 30963 |
for (pass = 0; pass <= vr->maxpass; ++pass) { // FIXME OPTIMIZE? |
1427 |
int voffset, partition_count, j_times_ptns_to_read; |
||
1428 |
|||
1429 |
21592 |
voffset = vr->begin; |
|
1430 |
✓✓ | 371180 |
for (partition_count = 0; partition_count < ptns_to_read;) { // SPEC error |
1431 |
✓✓ | 349588 |
if (!pass) { |
1432 |
134533 |
int ret = setup_classifs(vc, vr, do_not_decode, ch_used, partition_count, ptns_to_read); |
|
1433 |
✗✓ | 134533 |
if (ret < 0) |
1434 |
return ret; |
||
1435 |
} |
||
1436 |
✓✓✓✓ |
1084350 |
for (i = 0; (i < c_p_c) && (partition_count < ptns_to_read); ++i) { |
1437 |
✓✓ | 1532062 |
for (j_times_ptns_to_read = 0, j = 0; j < ch_used; ++j) { |
1438 |
unsigned voffs; |
||
1439 |
|||
1440 |
✓✓ | 797300 |
if (!do_not_decode[j]) { |
1441 |
793284 |
unsigned vqclass = classifs[j_times_ptns_to_read + partition_count]; |
|
1442 |
793284 |
int vqbook = vr->books[vqclass][pass]; |
|
1443 |
|||
1444 |
✓✓✓✗ |
793284 |
if (vqbook >= 0 && vc->codebooks[vqbook].codevectors) { |
1445 |
int coffs; |
||
1446 |
321646 |
unsigned dim = vc->codebooks[vqbook].dimensions; |
|
1447 |
321646 |
unsigned step = FASTDIV(vr->partition_size << 1, dim << 1); |
|
1448 |
321646 |
vorbis_codebook codebook = vc->codebooks[vqbook]; |
|
1449 |
|||
1450 |
✓✓ | 321646 |
if (vr_type == 0) { |
1451 |
|||
1452 |
115082 |
voffs = voffset+j*vlen; |
|
1453 |
✓✓ | 1357906 |
for (k = 0; k < step; ++k) { |
1454 |
1242824 |
coffs = get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3); |
|
1455 |
✗✓ | 1242824 |
if (coffs < 0) |
1456 |
return coffs; |
||
1457 |
1242824 |
coffs *= dim; |
|
1458 |
✓✓ | 4778728 |
for (l = 0; l < dim; ++l) |
1459 |
3535904 |
vec[voffs + k + l * step] += codebook.codevectors[coffs + l]; |
|
1460 |
} |
||
1461 |
✓✓ | 206564 |
} else if (vr_type == 1) { |
1462 |
27667 |
voffs = voffset + j * vlen; |
|
1463 |
✓✓ | 313777 |
for (k = 0; k < step; ++k) { |
1464 |
286110 |
coffs = get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3); |
|
1465 |
✗✓ | 286110 |
if (coffs < 0) |
1466 |
return coffs; |
||
1467 |
286110 |
coffs *= dim; |
|
1468 |
✓✓ | 1074498 |
for (l = 0; l < dim; ++l, ++voffs) { |
1469 |
788388 |
vec[voffs]+=codebook.codevectors[coffs+l]; |
|
1470 |
|||
1471 |
ff_dlog(NULL, " pass %d offs: %d curr: %f change: %f cv offs.: %d \n", |
||
1472 |
pass, voffs, vec[voffs], codebook.codevectors[coffs+l], coffs); |
||
1473 |
} |
||
1474 |
} |
||
1475 |
✓✗✓✓ ✓✗✓✗ |
178897 |
} else if (vr_type == 2 && ch == 2 && (voffset & 1) == 0 && (dim & 1) == 0) { // most frequent case optimized |
1476 |
151172 |
voffs = voffset >> 1; |
|
1477 |
|||
1478 |
✓✓ | 151172 |
if (dim == 2) { |
1479 |
✓✓ | 1068319 |
for (k = 0; k < step; ++k) { |
1480 |
1003836 |
coffs = get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3); |
|
1481 |
✗✓ | 1003836 |
if (coffs < 0) |
1482 |
return coffs; |
||
1483 |
1003836 |
coffs *= 2; |
|
1484 |
1003836 |
vec[voffs + k ] += codebook.codevectors[coffs ]; |
|
1485 |
1003836 |
vec[voffs + k + vlen] += codebook.codevectors[coffs + 1]; |
|
1486 |
} |
||
1487 |
✓✓ | 86689 |
} else if (dim == 4) { |
1488 |
✓✓ | 510023 |
for (k = 0; k < step; ++k, voffs += 2) { |
1489 |
446966 |
coffs = get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3); |
|
1490 |
✗✓ | 446966 |
if (coffs < 0) |
1491 |
return coffs; |
||
1492 |
446966 |
coffs *= 4; |
|
1493 |
446966 |
vec[voffs ] += codebook.codevectors[coffs ]; |
|
1494 |
446966 |
vec[voffs + 1 ] += codebook.codevectors[coffs + 2]; |
|
1495 |
446966 |
vec[voffs + vlen ] += codebook.codevectors[coffs + 1]; |
|
1496 |
446966 |
vec[voffs + vlen + 1] += codebook.codevectors[coffs + 3]; |
|
1497 |
} |
||
1498 |
} else |
||
1499 |
✓✓ | 117798 |
for (k = 0; k < step; ++k) { |
1500 |
94166 |
coffs = get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3); |
|
1501 |
✗✓ | 94166 |
if (coffs < 0) |
1502 |
return coffs; |
||
1503 |
94166 |
coffs *= dim; |
|
1504 |
✓✓ | 470830 |
for (l = 0; l < dim; l += 2, voffs++) { |
1505 |
376664 |
vec[voffs ] += codebook.codevectors[coffs + l ]; |
|
1506 |
376664 |
vec[voffs + vlen] += codebook.codevectors[coffs + l + 1]; |
|
1507 |
|||
1508 |
ff_dlog(NULL, " pass %d offs: %d curr: %f change: %f cv offs.: %d+%d \n", |
||
1509 |
pass, voffset / ch + (voffs % ch) * vlen, |
||
1510 |
vec[voffset / ch + (voffs % ch) * vlen], |
||
1511 |
codebook.codevectors[coffs + l], coffs, l); |
||
1512 |
} |
||
1513 |
} |
||
1514 |
|||
1515 |
✓✗ | 27725 |
} else if (vr_type == 2) { |
1516 |
✓✗ | 27725 |
unsigned voffs_div = ch == 1 ? voffset : FASTDIV(voffset, ch); |
1517 |
27725 |
unsigned voffs_mod = voffset - voffs_div * ch; |
|
1518 |
|||
1519 |
✓✓ | 191834 |
for (k = 0; k < step; ++k) { |
1520 |
164109 |
coffs = get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3); |
|
1521 |
✗✓ | 164109 |
if (coffs < 0) |
1522 |
return coffs; |
||
1523 |
164109 |
coffs *= dim; |
|
1524 |
✓✓ | 912594 |
for (l = 0; l < dim; ++l) { |
1525 |
748485 |
vec[voffs_div + voffs_mod * vlen] += |
|
1526 |
748485 |
codebook.codevectors[coffs + l]; |
|
1527 |
|||
1528 |
ff_dlog(NULL, " pass %d offs: %d curr: %f change: %f cv offs.: %d+%d \n", |
||
1529 |
pass, voffs_div + voffs_mod * vlen, |
||
1530 |
vec[voffs_div + voffs_mod * vlen], |
||
1531 |
codebook.codevectors[coffs + l], coffs, l); |
||
1532 |
|||
1533 |
✓✓ | 748485 |
if (++voffs_mod == ch) { |
1534 |
149697 |
voffs_div++; |
|
1535 |
149697 |
voffs_mod = 0; |
|
1536 |
} |
||
1537 |
} |
||
1538 |
} |
||
1539 |
} |
||
1540 |
} |
||
1541 |
} |
||
1542 |
797300 |
j_times_ptns_to_read += ptns_to_read; |
|
1543 |
} |
||
1544 |
734762 |
++partition_count; |
|
1545 |
734762 |
voffset += vr->partition_size; |
|
1546 |
} |
||
1547 |
} |
||
1548 |
✗✓✗✗ |
21592 |
if (libvorbis_bug && !pass) { |
1549 |
for (j = 0; j < ch_used; ++j) { |
||
1550 |
if (!do_not_decode[j]) { |
||
1551 |
get_vlc2(&vc->gb, vc->codebooks[vr->classbook].vlc.table, |
||
1552 |
vc->codebooks[vr->classbook].nb_bits, 3); |
||
1553 |
} |
||
1554 |
} |
||
1555 |
} |
||
1556 |
} |
||
1557 |
9371 |
return 0; |
|
1558 |
} |
||
1559 |
|||
1560 |
9491 |
static inline int vorbis_residue_decode(vorbis_context *vc, vorbis_residue *vr, |
|
1561 |
unsigned ch, |
||
1562 |
uint8_t *do_not_decode, |
||
1563 |
float *vec, unsigned vlen, |
||
1564 |
unsigned ch_left) |
||
1565 |
{ |
||
1566 |
✓✓ | 9491 |
if (vr->type == 2) |
1567 |
4274 |
return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, ch_left, 2); |
|
1568 |
✓✓ | 5217 |
else if (vr->type == 1) |
1569 |
1797 |
return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, ch_left, 1); |
|
1570 |
✓✗ | 3420 |
else if (vr->type == 0) |
1571 |
3420 |
return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, ch_left, 0); |
|
1572 |
else { |
||
1573 |
av_log(vc->avctx, AV_LOG_ERROR, " Invalid residue type while residue decode?! \n"); |
||
1574 |
return AVERROR_INVALIDDATA; |
||
1575 |
} |
||
1576 |
} |
||
1577 |
|||
1578 |
5386 |
void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize) |
|
1579 |
{ |
||
1580 |
int i; |
||
1581 |
✓✓ | 4056586 |
for (i = 0; i < blocksize; i++) { |
1582 |
✓✓ | 4051200 |
if (mag[i] > 0.0) { |
1583 |
✓✓ | 625839 |
if (ang[i] > 0.0) { |
1584 |
156737 |
ang[i] = mag[i] - ang[i]; |
|
1585 |
} else { |
||
1586 |
469102 |
float temp = ang[i]; |
|
1587 |
469102 |
ang[i] = mag[i]; |
|
1588 |
469102 |
mag[i] += temp; |
|
1589 |
} |
||
1590 |
} else { |
||
1591 |
✓✓ | 3425361 |
if (ang[i] > 0.0) { |
1592 |
160616 |
ang[i] += mag[i]; |
|
1593 |
} else { |
||
1594 |
3264745 |
float temp = ang[i]; |
|
1595 |
3264745 |
ang[i] = mag[i]; |
|
1596 |
3264745 |
mag[i] -= temp; |
|
1597 |
} |
||
1598 |
} |
||
1599 |
} |
||
1600 |
5386 |
} |
|
1601 |
|||
1602 |
// Decode the audio packet using the functions above |
||
1603 |
|||
1604 |
9120 |
static int vorbis_parse_audio_packet(vorbis_context *vc, float **floor_ptr) |
|
1605 |
{ |
||
1606 |
9120 |
GetBitContext *gb = &vc->gb; |
|
1607 |
FFTContext *mdct; |
||
1608 |
9120 |
int previous_window = vc->previous_window; |
|
1609 |
unsigned mode_number, blockflag, blocksize; |
||
1610 |
int i, j; |
||
1611 |
uint8_t no_residue[255]; |
||
1612 |
uint8_t do_not_decode[255]; |
||
1613 |
vorbis_mapping *mapping; |
||
1614 |
9120 |
float *ch_res_ptr = vc->channel_residues; |
|
1615 |
uint8_t res_chan[255]; |
||
1616 |
9120 |
unsigned res_num = 0; |
|
1617 |
9120 |
int retlen = 0; |
|
1618 |
9120 |
unsigned ch_left = vc->audio_channels; |
|
1619 |
unsigned vlen; |
||
1620 |
|||
1621 |
✗✓ | 9120 |
if (get_bits1(gb)) { |
1622 |
av_log(vc->avctx, AV_LOG_ERROR, "Not a Vorbis I audio packet.\n"); |
||
1623 |
return AVERROR_INVALIDDATA; // packet type not audio |
||
1624 |
} |
||
1625 |
|||
1626 |
✗✓ | 9120 |
if (vc->mode_count == 1) { |
1627 |
mode_number = 0; |
||
1628 |
} else { |
||
1629 |
✗✓ | 9120 |
GET_VALIDATED_INDEX(mode_number, ilog(vc->mode_count-1), vc->mode_count) |
1630 |
} |
||
1631 |
9120 |
vc->mode_number = mode_number; |
|
1632 |
9120 |
mapping = &vc->mappings[vc->modes[mode_number].mapping]; |
|
1633 |
|||
1634 |
ff_dlog(NULL, " Mode number: %u , mapping: %d , blocktype %d\n", mode_number, |
||
1635 |
vc->modes[mode_number].mapping, vc->modes[mode_number].blockflag); |
||
1636 |
|||
1637 |
9120 |
blockflag = vc->modes[mode_number].blockflag; |
|
1638 |
9120 |
blocksize = vc->blocksize[blockflag]; |
|
1639 |
9120 |
vlen = blocksize / 2; |
|
1640 |
✓✓ | 9120 |
if (blockflag) { |
1641 |
5974 |
int code = get_bits(gb, 2); |
|
1642 |
✓✓ | 5974 |
if (previous_window < 0) |
1643 |
3 |
previous_window = code>>1; |
|
1644 |
✓✓ | 3146 |
} else if (previous_window < 0) |
1645 |
50 |
previous_window = 0; |
|
1646 |
|||
1647 |
9120 |
memset(ch_res_ptr, 0, sizeof(float) * vc->audio_channels * vlen); //FIXME can this be removed ? |
|
1648 |
✓✓ | 26953 |
for (i = 0; i < vc->audio_channels; ++i) |
1649 |
17833 |
memset(floor_ptr[i], 0, vlen * sizeof(floor_ptr[0][0])); //FIXME can this be removed ? |
|
1650 |
|||
1651 |
// Decode floor |
||
1652 |
|||
1653 |
✓✓ | 26953 |
for (i = 0; i < vc->audio_channels; ++i) { |
1654 |
vorbis_floor *floor; |
||
1655 |
int ret; |
||
1656 |
✓✓ | 17833 |
if (mapping->submaps > 1) { |
1657 |
2226 |
floor = &vc->floors[mapping->submap_floor[mapping->mux[i]]]; |
|
1658 |
} else { |
||
1659 |
15607 |
floor = &vc->floors[mapping->submap_floor[0]]; |
|
1660 |
} |
||
1661 |
|||
1662 |
17833 |
ret = floor->decode(vc, &floor->data, floor_ptr[i]); |
|
1663 |
|||
1664 |
✗✓ | 17833 |
if (ret < 0) { |
1665 |
av_log(vc->avctx, AV_LOG_ERROR, "Invalid codebook in vorbis_floor_decode.\n"); |
||
1666 |
return AVERROR_INVALIDDATA; |
||
1667 |
} |
||
1668 |
17833 |
no_residue[i] = ret; |
|
1669 |
} |
||
1670 |
|||
1671 |
// Nonzero vector propagate |
||
1672 |
|||
1673 |
✓✓ | 14507 |
for (i = mapping->coupling_steps - 1; i >= 0; --i) { |
1674 |
✓✓ | 5387 |
if (!(no_residue[mapping->magnitude[i]] & no_residue[mapping->angle[i]])) { |
1675 |
4731 |
no_residue[mapping->magnitude[i]] = 0; |
|
1676 |
4731 |
no_residue[mapping->angle[i]] = 0; |
|
1677 |
} |
||
1678 |
} |
||
1679 |
|||
1680 |
// Decode residue |
||
1681 |
|||
1682 |
✓✓ | 18611 |
for (i = 0; i < mapping->submaps; ++i) { |
1683 |
vorbis_residue *residue; |
||
1684 |
9491 |
unsigned ch = 0; |
|
1685 |
int ret; |
||
1686 |
|||
1687 |
✓✓ | 29550 |
for (j = 0; j < vc->audio_channels; ++j) { |
1688 |
✓✓✓✓ |
20059 |
if ((mapping->submaps == 1) || (i == mapping->mux[j])) { |
1689 |
17833 |
res_chan[j] = res_num; |
|
1690 |
✓✓ | 17833 |
if (no_residue[j]) { |
1691 |
1226 |
do_not_decode[ch] = 1; |
|
1692 |
} else { |
||
1693 |
16607 |
do_not_decode[ch] = 0; |
|
1694 |
} |
||
1695 |
17833 |
++ch; |
|
1696 |
17833 |
++res_num; |
|
1697 |
} |
||
1698 |
} |
||
1699 |
9491 |
residue = &vc->residues[mapping->submap_residue[i]]; |
|
1700 |
✗✓ | 9491 |
if (ch_left < ch) { |
1701 |
av_log(vc->avctx, AV_LOG_ERROR, "Too many channels in vorbis_floor_decode.\n"); |
||
1702 |
return AVERROR_INVALIDDATA; |
||
1703 |
} |
||
1704 |
✓✗ | 9491 |
if (ch) { |
1705 |
9491 |
ret = vorbis_residue_decode(vc, residue, ch, do_not_decode, ch_res_ptr, vlen, ch_left); |
|
1706 |
✗✓ | 9491 |
if (ret < 0) |
1707 |
return ret; |
||
1708 |
} |
||
1709 |
|||
1710 |
9491 |
ch_res_ptr += ch * vlen; |
|
1711 |
9491 |
ch_left -= ch; |
|
1712 |
} |
||
1713 |
|||
1714 |
✗✓ | 9120 |
if (ch_left > 0) |
1715 |
return AVERROR_INVALIDDATA; |
||
1716 |
|||
1717 |
// Inverse coupling |
||
1718 |
|||
1719 |
✓✓ | 14507 |
for (i = mapping->coupling_steps - 1; i >= 0; --i) { //warning: i has to be signed |
1720 |
float *mag, *ang; |
||
1721 |
|||
1722 |
5387 |
mag = vc->channel_residues+res_chan[mapping->magnitude[i]] * blocksize / 2; |
|
1723 |
5387 |
ang = vc->channel_residues+res_chan[mapping->angle[i]] * blocksize / 2; |
|
1724 |
5387 |
vc->dsp.vorbis_inverse_coupling(mag, ang, blocksize / 2); |
|
1725 |
} |
||
1726 |
|||
1727 |
// Dotproduct, MDCT |
||
1728 |
|||
1729 |
9120 |
mdct = &vc->mdct[blockflag]; |
|
1730 |
|||
1731 |
✓✓ | 26953 |
for (j = vc->audio_channels-1;j >= 0; j--) { |
1732 |
17833 |
ch_res_ptr = vc->channel_residues + res_chan[j] * blocksize / 2; |
|
1733 |
17833 |
vc->fdsp->vector_fmul(floor_ptr[j], floor_ptr[j], ch_res_ptr, blocksize / 2); |
|
1734 |
17833 |
mdct->imdct_half(mdct, ch_res_ptr, floor_ptr[j]); |
|
1735 |
} |
||
1736 |
|||
1737 |
// Overlap/add, save data for next overlapping |
||
1738 |
|||
1739 |
9120 |
retlen = (blocksize + vc->blocksize[previous_window]) / 4; |
|
1740 |
✓✓ | 26953 |
for (j = 0; j < vc->audio_channels; j++) { |
1741 |
17833 |
unsigned bs0 = vc->blocksize[0]; |
|
1742 |
17833 |
unsigned bs1 = vc->blocksize[1]; |
|
1743 |
17833 |
float *residue = vc->channel_residues + res_chan[j] * blocksize / 2; |
|
1744 |
17833 |
float *saved = vc->saved + j * bs1 / 4; |
|
1745 |
17833 |
float *ret = floor_ptr[j]; |
|
1746 |
17833 |
float *buf = residue; |
|
1747 |
17833 |
const float *win = vc->win[blockflag & previous_window]; |
|
1748 |
|||
1749 |
✓✓ | 17833 |
if (blockflag == previous_window) { |
1750 |
16402 |
vc->fdsp->vector_fmul_window(ret, saved, buf, win, blocksize / 4); |
|
1751 |
✓✓ | 1431 |
} else if (blockflag > previous_window) { |
1752 |
735 |
vc->fdsp->vector_fmul_window(ret, saved, buf, win, bs0 / 4); |
|
1753 |
735 |
memcpy(ret+bs0/2, buf+bs0/4, ((bs1-bs0)/4) * sizeof(float)); |
|
1754 |
} else { |
||
1755 |
696 |
memcpy(ret, saved, ((bs1 - bs0) / 4) * sizeof(float)); |
|
1756 |
696 |
vc->fdsp->vector_fmul_window(ret + (bs1 - bs0) / 4, saved + (bs1 - bs0) / 4, buf, win, bs0 / 4); |
|
1757 |
} |
||
1758 |
17833 |
memcpy(saved, buf + blocksize / 4, blocksize / 4 * sizeof(float)); |
|
1759 |
} |
||
1760 |
|||
1761 |
9120 |
vc->previous_window = blockflag; |
|
1762 |
9120 |
return retlen; |
|
1763 |
} |
||
1764 |
|||
1765 |
// Return the decoded audio packet through the standard api |
||
1766 |
|||
1767 |
9120 |
static int vorbis_decode_frame(AVCodecContext *avctx, void *data, |
|
1768 |
int *got_frame_ptr, AVPacket *avpkt) |
||
1769 |
{ |
||
1770 |
9120 |
const uint8_t *buf = avpkt->data; |
|
1771 |
9120 |
int buf_size = avpkt->size; |
|
1772 |
9120 |
vorbis_context *vc = avctx->priv_data; |
|
1773 |
9120 |
AVFrame *frame = data; |
|
1774 |
9120 |
GetBitContext *gb = &vc->gb; |
|
1775 |
float *channel_ptrs[255]; |
||
1776 |
int i, len, ret; |
||
1777 |
|||
1778 |
ff_dlog(NULL, "packet length %d \n", buf_size); |
||
1779 |
|||
1780 |
✗✓✗✗ |
9120 |
if (*buf == 1 && buf_size > 7) { |
1781 |
if ((ret = init_get_bits8(gb, buf + 1, buf_size - 1)) < 0) |
||
1782 |
return ret; |
||
1783 |
|||
1784 |
vorbis_free(vc); |
||
1785 |
if ((ret = vorbis_parse_id_hdr(vc))) { |
||
1786 |
av_log(avctx, AV_LOG_ERROR, "Id header corrupt.\n"); |
||
1787 |
vorbis_free(vc); |
||
1788 |
return ret; |
||
1789 |
} |
||
1790 |
|||
1791 |
if (vc->audio_channels > 8) |
||
1792 |
avctx->channel_layout = 0; |
||
1793 |
else |
||
1794 |
avctx->channel_layout = ff_vorbis_channel_layouts[vc->audio_channels - 1]; |
||
1795 |
|||
1796 |
avctx->channels = vc->audio_channels; |
||
1797 |
avctx->sample_rate = vc->audio_samplerate; |
||
1798 |
return buf_size; |
||
1799 |
} |
||
1800 |
|||
1801 |
✗✓✗✗ |
9120 |
if (*buf == 3 && buf_size > 7) { |
1802 |
av_log(avctx, AV_LOG_DEBUG, "Ignoring comment header\n"); |
||
1803 |
return buf_size; |
||
1804 |
} |
||
1805 |
|||
1806 |
✗✓✗✗ ✗✗✗✗ |
9120 |
if (*buf == 5 && buf_size > 7 && vc->channel_residues && !vc->modes) { |
1807 |
if ((ret = init_get_bits8(gb, buf + 1, buf_size - 1)) < 0) |
||
1808 |
return ret; |
||
1809 |
|||
1810 |
if ((ret = vorbis_parse_setup_hdr(vc))) { |
||
1811 |
av_log(avctx, AV_LOG_ERROR, "Setup header corrupt.\n"); |
||
1812 |
vorbis_free(vc); |
||
1813 |
return ret; |
||
1814 |
} |
||
1815 |
return buf_size; |
||
1816 |
} |
||
1817 |
|||
1818 |
✓✗✗✓ |
9120 |
if (!vc->channel_residues || !vc->modes) { |
1819 |
av_log(avctx, AV_LOG_ERROR, "Data packet before valid headers\n"); |
||
1820 |
return AVERROR_INVALIDDATA; |
||
1821 |
} |
||
1822 |
|||
1823 |
/* get output buffer */ |
||
1824 |
9120 |
frame->nb_samples = vc->blocksize[1] / 2; |
|
1825 |
✗✓ | 9120 |
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) |
1826 |
return ret; |
||
1827 |
|||
1828 |
✗✓ | 9120 |
if (vc->audio_channels > 8) { |
1829 |
for (i = 0; i < vc->audio_channels; i++) |
||
1830 |
channel_ptrs[i] = (float *)frame->extended_data[i]; |
||
1831 |
} else { |
||
1832 |
✓✓ | 26953 |
for (i = 0; i < vc->audio_channels; i++) { |
1833 |
17833 |
int ch = ff_vorbis_channel_layout_offsets[vc->audio_channels - 1][i]; |
|
1834 |
17833 |
channel_ptrs[ch] = (float *)frame->extended_data[i]; |
|
1835 |
} |
||
1836 |
} |
||
1837 |
|||
1838 |
✗✓ | 9120 |
if ((ret = init_get_bits8(gb, buf, buf_size)) < 0) |
1839 |
return ret; |
||
1840 |
|||
1841 |
✗✓ | 9120 |
if ((len = vorbis_parse_audio_packet(vc, channel_ptrs)) <= 0) |
1842 |
return len; |
||
1843 |
|||
1844 |
✓✓ | 9120 |
if (!vc->first_frame) { |
1845 |
53 |
vc->first_frame = 1; |
|
1846 |
53 |
*got_frame_ptr = 0; |
|
1847 |
53 |
av_frame_unref(frame); |
|
1848 |
53 |
return buf_size; |
|
1849 |
} |
||
1850 |
|||
1851 |
ff_dlog(NULL, "parsed %d bytes %d bits, returned %d samples (*ch*bits) \n", |
||
1852 |
get_bits_count(gb) / 8, get_bits_count(gb) % 8, len); |
||
1853 |
|||
1854 |
9067 |
frame->nb_samples = len; |
|
1855 |
9067 |
*got_frame_ptr = 1; |
|
1856 |
|||
1857 |
9067 |
return buf_size; |
|
1858 |
} |
||
1859 |
|||
1860 |
// Close decoder |
||
1861 |
|||
1862 |
62 |
static av_cold int vorbis_decode_close(AVCodecContext *avctx) |
|
1863 |
{ |
||
1864 |
62 |
vorbis_context *vc = avctx->priv_data; |
|
1865 |
|||
1866 |
62 |
vorbis_free(vc); |
|
1867 |
|||
1868 |
62 |
return 0; |
|
1869 |
} |
||
1870 |
|||
1871 |
static av_cold void vorbis_decode_flush(AVCodecContext *avctx) |
||
1872 |
{ |
||
1873 |
vorbis_context *vc = avctx->priv_data; |
||
1874 |
|||
1875 |
if (vc->saved) { |
||
1876 |
memset(vc->saved, 0, (vc->blocksize[1] / 4) * vc->audio_channels * |
||
1877 |
sizeof(*vc->saved)); |
||
1878 |
} |
||
1879 |
vc->previous_window = -1; |
||
1880 |
vc->first_frame = 0; |
||
1881 |
} |
||
1882 |
|||
1883 |
AVCodec ff_vorbis_decoder = { |
||
1884 |
.name = "vorbis", |
||
1885 |
.long_name = NULL_IF_CONFIG_SMALL("Vorbis"), |
||
1886 |
.type = AVMEDIA_TYPE_AUDIO, |
||
1887 |
.id = AV_CODEC_ID_VORBIS, |
||
1888 |
.priv_data_size = sizeof(vorbis_context), |
||
1889 |
.init = vorbis_decode_init, |
||
1890 |
.close = vorbis_decode_close, |
||
1891 |
.decode = vorbis_decode_frame, |
||
1892 |
.flush = vorbis_decode_flush, |
||
1893 |
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF, |
||
1894 |
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP, |
||
1895 |
.channel_layouts = ff_vorbis_channel_layouts, |
||
1896 |
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP, |
||
1897 |
AV_SAMPLE_FMT_NONE }, |
||
1898 |
}; |
Generated by: GCOVR (Version 4.2) |