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Commit | Line | Data |
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29a8f73f | 1 | /* |
2 | * Copyright (C) 2013 nu774 | |
3 | * For conditions of distribution and use, see copyright notice in COPYING | |
4 | */ | |
5 | ||
6 | #if HAVE_CONFIG_H | |
7 | # include "config.h" | |
8 | #endif | |
9 | ||
10 | #if HAVE_STDINT_H | |
11 | # include <stdint.h> | |
12 | #endif | |
13 | ||
14 | #include <stdio.h> | |
1af8624b | 15 | #include <stdlib.h> |
16 | #include <string.h> | |
29a8f73f | 17 | #include <stdarg.h> |
18 | #include "pcm_reader.h" | |
19 | #include "m4af_endian.h" | |
1af8624b | 20 | #include "catypes.h" |
29a8f73f | 21 | |
22 | int pcm_read(pcm_io_context_t *io, void *buffer, uint32_t size) | |
23 | { | |
24 | int rc; | |
25 | uint32_t count = 0; | |
26 | ||
27 | do { | |
28 | rc = io->vtbl->read(io->cookie, buffer, size - count); | |
29 | if (rc > 0) | |
30 | count += rc; | |
31 | } while (rc > 0 && count < size); | |
32 | return count > 0 ? count : rc; | |
33 | } | |
34 | ||
35 | int pcm_skip(pcm_io_context_t *io, int64_t count) | |
36 | { | |
37 | char buff[8192]; | |
38 | int rc; | |
39 | pcm_io_vtbl_t *vp = io->vtbl; | |
40 | ||
41 | if (count == 0 || pcm_seek(io, count, SEEK_CUR) >= 0) | |
42 | return 0; | |
43 | do { | |
44 | if ((rc = vp->read(io->cookie, buff, count > 8192 ? 8192 : count)) > 0) | |
45 | count -= rc; | |
46 | } while (rc > 0 && count > 0); | |
47 | ||
48 | return count == 0 ? 0 : -1; | |
49 | } | |
50 | ||
51 | int pcm_read16le(pcm_io_context_t *io, uint16_t *value) | |
52 | { | |
53 | if (pcm_read(io, value, 2) == 2) { | |
54 | *value = m4af_ltoh16(*value); | |
55 | return 0; | |
56 | } | |
57 | return -1; | |
58 | } | |
59 | ||
60 | int pcm_read16be(pcm_io_context_t *io, uint16_t *value) | |
61 | { | |
62 | if (pcm_read(io, value, 2) == 2) { | |
63 | *value = m4af_btoh16(*value); | |
64 | return 0; | |
65 | } | |
66 | return -1; | |
67 | } | |
68 | ||
69 | int pcm_read32le(pcm_io_context_t *io, uint32_t *value) | |
70 | { | |
71 | if (pcm_read(io, value, 4) == 4) { | |
72 | *value = m4af_ltoh32(*value); | |
73 | return 0; | |
74 | } | |
75 | return -1; | |
76 | } | |
77 | ||
78 | int pcm_read32be(pcm_io_context_t *io, uint32_t *value) | |
79 | { | |
80 | if (pcm_read(io, value, 4) == 4) { | |
81 | *value = m4af_btoh32(*value); | |
82 | return 0; | |
83 | } | |
84 | return -1; | |
85 | } | |
86 | ||
87 | int pcm_read64le(pcm_io_context_t *io, uint64_t *value) | |
88 | { | |
89 | if (pcm_read(io, value, 8) == 8) { | |
90 | *value = m4af_ltoh64(*value); | |
91 | return 0; | |
92 | } | |
93 | return -1; | |
94 | } | |
95 | ||
96 | int pcm_read64be(pcm_io_context_t *io, uint64_t *value) | |
97 | { | |
98 | if (pcm_read(io, value, 8) == 8) { | |
99 | *value = m4af_btoh64(*value); | |
100 | return 0; | |
101 | } | |
102 | return -1; | |
103 | } | |
104 | ||
105 | int pcm_scanl(pcm_io_context_t *io, const char *fmt, ...) | |
106 | { | |
107 | int c, count = 0; | |
108 | va_list ap; | |
109 | ||
110 | va_start(ap, fmt); | |
111 | while ((c = *fmt++)) { | |
112 | switch (c) { | |
113 | case 'S': | |
114 | TRY_IO(pcm_read16le(io, va_arg(ap, uint16_t*))); | |
115 | ++count; | |
116 | break; | |
117 | case 'L': | |
118 | TRY_IO(pcm_read32le(io, va_arg(ap, uint32_t*))); | |
119 | ++count; | |
120 | break; | |
121 | case 'Q': | |
122 | TRY_IO(pcm_read64le(io, va_arg(ap, uint64_t*))); | |
123 | ++count; | |
124 | break; | |
125 | } | |
126 | } | |
127 | FAIL: | |
128 | va_end(ap); | |
129 | return count; | |
130 | } | |
131 | ||
132 | int pcm_scanb(pcm_io_context_t *io, const char *fmt, ...) | |
133 | { | |
134 | int c, count = 0; | |
135 | va_list ap; | |
136 | ||
137 | va_start(ap, fmt); | |
138 | while ((c = *fmt++)) { | |
139 | switch (c) { | |
140 | case 'S': | |
141 | TRY_IO(pcm_read16be(io, va_arg(ap, uint16_t*))); | |
142 | ++count; | |
143 | break; | |
144 | case 'L': | |
145 | TRY_IO(pcm_read32be(io, va_arg(ap, uint32_t*))); | |
146 | ++count; | |
147 | break; | |
148 | case 'Q': | |
149 | TRY_IO(pcm_read64be(io, va_arg(ap, uint64_t*))); | |
150 | ++count; | |
151 | break; | |
152 | } | |
153 | } | |
154 | FAIL: | |
155 | va_end(ap); | |
156 | return count; | |
157 | } | |
1af8624b | 158 | |
159 | static | |
160 | int channel_compare(const void *a, const void *b) | |
161 | { | |
162 | return (*(const uint8_t **)a)[0] - (*(const uint8_t **)b)[0]; | |
163 | } | |
164 | ||
165 | void apple_translate_channel_labels(uint8_t *channels, unsigned n) | |
166 | { | |
167 | unsigned i; | |
168 | char *has_side = strpbrk((char*)channels, "\x0A\x0B"); | |
169 | ||
170 | for (i = 0; i < n; ++i) { | |
171 | switch (channels[i]) { | |
172 | case kAudioChannelLabel_LeftSurround: | |
173 | case kAudioChannelLabel_RightSurround: | |
174 | if (!has_side) channels[i] += 5; // map to SL/SR | |
175 | break; | |
176 | case kAudioChannelLabel_RearSurroundLeft: | |
177 | case kAudioChannelLabel_RearSurroundRight: | |
178 | if (!has_side) channels[i] -= 28; // map to BL/BR | |
179 | break; | |
180 | case kAudioChannelLabel_Mono: | |
181 | channels[i] = kAudioChannelLabel_Center; | |
182 | break; | |
183 | } | |
184 | } | |
185 | } | |
186 | ||
187 | int apple_chan_chunk(pcm_io_context_t *io, uint32_t chunk_size, | |
188 | pcm_sample_description_t *fmt, uint8_t *mapping) | |
189 | { | |
190 | /* | |
191 | * Although FDK encoder supports upto 5.1ch, we handle upto | |
192 | * 8 channels here. | |
193 | */ | |
194 | uint32_t i, mChannelLayoutTag, mChannelBitmap, mNumberChannelDescriptions; | |
195 | uint32_t mask = 0; | |
196 | const uint32_t nchannels = fmt->channels_per_frame; | |
197 | uint8_t channels[9] = { 0 }; | |
198 | uint8_t *index[8] = { 0 }; | |
199 | const char *layout = 0; | |
200 | ||
201 | ENSURE(chunk_size >= 12); | |
202 | TRY_IO(pcm_scanb(io, "LLL", &mChannelLayoutTag, &mChannelBitmap, | |
203 | &mNumberChannelDescriptions) != 3); | |
204 | ||
205 | switch (mChannelLayoutTag) { | |
206 | case kAudioChannelLayoutTag_UseChannelBitmap: | |
207 | ENSURE(bitcount(mask) == nchannels); | |
208 | TRY_IO(pcm_skip(io, chunk_size - 12)); | |
209 | fmt->channel_mask = mChannelBitmap; | |
210 | for (i = 0; i < nchannels; ++i) | |
211 | mapping[i] = i; | |
212 | return 0; | |
213 | case kAudioChannelLayoutTag_UseChannelDescriptions: | |
214 | ENSURE(mNumberChannelDescriptions == nchannels); | |
215 | ENSURE(chunk_size >= 12 + nchannels * 20); | |
216 | for (i = 0; i < mNumberChannelDescriptions; ++i) { | |
217 | uint32_t mChannelLabel; | |
218 | TRY_IO(pcm_read32be(io, &mChannelLabel)); | |
219 | ENSURE(mChannelLabel && mChannelLabel <= 0xff); | |
220 | channels[i] = mChannelLabel; | |
221 | TRY_IO(pcm_skip(io, 16)); | |
222 | } | |
223 | TRY_IO(pcm_skip(io, chunk_size - 12 - nchannels * 20)); | |
224 | apple_translate_channel_labels(channels, nchannels); | |
225 | for (i = 0; i < nchannels; ++i) | |
226 | if (channels[i] > kAudioChannelLabel_TopBackLeft) | |
227 | goto FAIL; | |
228 | break; | |
229 | default: | |
230 | ENSURE((mChannelLayoutTag & 0xffff) == nchannels); | |
231 | TRY_IO(pcm_skip(io, chunk_size - 12)); | |
232 | ||
233 | switch (mChannelLayoutTag) { | |
234 | /* 1ch */ | |
235 | case kAudioChannelLayoutTag_Mono: | |
236 | layout = "\x03"; break; | |
237 | /* 1.1ch */ | |
238 | case kAudioChannelLayoutTag_AC3_1_0_1: | |
239 | layout = "\x03\x04"; break; | |
240 | /* 2ch */ | |
241 | case kAudioChannelLayoutTag_Stereo: | |
242 | case kAudioChannelLayoutTag_MatrixStereo: | |
243 | case kAudioChannelLayoutTag_Binaural: | |
244 | layout = "\x01\x02"; break; | |
245 | /* 2.1ch */ | |
246 | case kAudioChannelLayoutTag_DVD_4: | |
247 | layout = "\x01\x02\x04"; break; | |
248 | /* 3ch */ | |
249 | case kAudioChannelLayoutTag_MPEG_3_0_A: | |
250 | layout = "\x01\x02\x03"; break; | |
251 | case kAudioChannelLayoutTag_AC3_3_0: | |
252 | layout = "\x01\x03\x02"; break; | |
253 | case kAudioChannelLayoutTag_MPEG_3_0_B: | |
254 | layout = "\x03\x01\x02"; break; | |
255 | case kAudioChannelLayoutTag_ITU_2_1: | |
256 | layout = "\x01\x02\x09"; break; | |
257 | /* 3.1ch */ | |
258 | case kAudioChannelLayoutTag_DVD_10: | |
259 | layout = "\x01\x02\x03\x04"; break; | |
260 | case kAudioChannelLayoutTag_AC3_3_0_1: | |
261 | layout = "\x01\x03\x02\x04"; break; | |
262 | case kAudioChannelLayoutTag_DVD_5: | |
263 | layout = "\x01\x02\x04\x09"; break; | |
264 | case kAudioChannelLayoutTag_AC3_2_1_1: | |
265 | layout = "\x01\x02\x09\x04"; break; | |
266 | /* 4ch */ | |
267 | case kAudioChannelLayoutTag_Quadraphonic: | |
268 | case kAudioChannelLayoutTag_ITU_2_2: | |
269 | layout = "\x01\x02\x0A\x0B"; break; | |
270 | case kAudioChannelLayoutTag_MPEG_4_0_A: | |
271 | layout = "\x01\x02\x03\x09"; break; | |
272 | case kAudioChannelLayoutTag_MPEG_4_0_B: | |
273 | layout = "\x03\x01\x02\x09"; break; | |
274 | case kAudioChannelLayoutTag_AC3_3_1: | |
275 | layout = "\x01\x03\x02\x09"; break; | |
276 | /* 4.1ch */ | |
277 | case kAudioChannelLayoutTag_DVD_6: | |
278 | layout = "\x01\x02\x04\x0A\x0B"; break; | |
279 | case kAudioChannelLayoutTag_DVD_18: | |
280 | layout = "\x01\x02\x0A\x0B\x04"; break; | |
281 | case kAudioChannelLayoutTag_DVD_11: | |
282 | layout = "\x01\x02\x03\x04\x09"; break; | |
283 | case kAudioChannelLayoutTag_AC3_3_1_1: | |
284 | layout = "\x01\x03\x02\x09\x04"; break; | |
285 | /* 5ch */ | |
286 | case kAudioChannelLayoutTag_MPEG_5_0_A: | |
287 | layout = "\x01\x02\x03\x0A\x0B"; break; | |
288 | case kAudioChannelLayoutTag_Pentagonal: | |
289 | case kAudioChannelLayoutTag_MPEG_5_0_B: | |
290 | layout = "\x01\x02\x0A\x0B\x03"; break; | |
291 | case kAudioChannelLayoutTag_MPEG_5_0_C: | |
292 | layout = "\x01\x03\x02\x0A\x0B"; break; | |
293 | case kAudioChannelLayoutTag_MPEG_5_0_D: | |
294 | layout = "\x03\x01\x02\x0A\x0B"; break; | |
295 | /* 5.1ch */ | |
296 | case kAudioChannelLayoutTag_MPEG_5_1_A: | |
297 | layout = "\x01\x02\x03\x04\x0A\x0B"; break; | |
298 | case kAudioChannelLayoutTag_MPEG_5_1_B: | |
299 | layout = "\x01\x02\x0A\x0B\x03\x04"; break; | |
300 | case kAudioChannelLayoutTag_MPEG_5_1_C: | |
301 | layout = "\x01\x03\x02\x0A\x0B\x04"; break; | |
302 | case kAudioChannelLayoutTag_MPEG_5_1_D: | |
303 | layout = "\x03\x01\x02\x0A\x0B\x04"; break; | |
304 | /* 6ch */ | |
305 | case kAudioChannelLayoutTag_Hexagonal: | |
306 | case kAudioChannelLayoutTag_AudioUnit_6_0: | |
307 | layout = "\x01\x02\x0A\x0B\x03\x09"; break; | |
308 | case kAudioChannelLayoutTag_AAC_6_0: | |
309 | layout = "\x03\x01\x02\x0A\x0B\x09"; break; | |
310 | /* 6.1ch */ | |
311 | case kAudioChannelLayoutTag_MPEG_6_1_A: | |
312 | layout = "\x01\x02\x03\x04\x0A\x0B\x09"; break; | |
313 | case kAudioChannelLayoutTag_AAC_6_1: | |
314 | layout = "\x03\x01\x02\x0A\x0B\x09\x04"; break; | |
315 | /* 7ch */ | |
316 | case kAudioChannelLayoutTag_AudioUnit_7_0: | |
317 | layout = "\x01\x02\x0A\x0B\x03\x05\x06"; break; | |
318 | case kAudioChannelLayoutTag_AudioUnit_7_0_Front: | |
319 | layout = "\x01\x02\x0A\x0B\x03\x07\x08"; break; | |
320 | case kAudioChannelLayoutTag_AAC_7_0: | |
321 | layout = "\x03\x01\x02\x0A\x0B\x05\x06"; break; | |
322 | /* 7.1ch */ | |
323 | case kAudioChannelLayoutTag_MPEG_7_1_A: | |
324 | layout = "\x01\x02\x03\x04\x0A\x0B\x07\x08"; break; | |
325 | case kAudioChannelLayoutTag_MPEG_7_1_B: | |
326 | layout = "\x03\x07\x08\x01\x02\x05\x06\x04"; break; | |
327 | case kAudioChannelLayoutTag_MPEG_7_1_C: | |
328 | layout = "\x01\x02\x03\x04\x0A\x0B\x05\x06"; break; | |
329 | case kAudioChannelLayoutTag_Emagic_Default_7_1: | |
330 | layout = "\x01\x02\x0A\x0B\x03\x04\x07\x08"; break; | |
331 | /* 8ch */ | |
332 | case kAudioChannelLayoutTag_Octagonal: | |
333 | layout = "\x01\x02\x05\x06\x03\x09\x0A\x0B"; break; | |
334 | case kAudioChannelLayoutTag_AAC_Octagonal: | |
335 | layout = "\x03\x01\x02\x0A\x0B\x05\x06\x09"; break; | |
336 | default: | |
337 | goto FAIL; | |
338 | } | |
339 | strcpy((char*)channels, layout); | |
340 | } | |
341 | ||
342 | for (i = 0; i < nchannels; ++i) | |
343 | mask |= 1 << (channels[i] - 1); | |
344 | fmt->channel_mask = mask; | |
345 | ENSURE(bitcount(mask) == nchannels); | |
346 | ||
347 | for (i = 0; i < nchannels; ++i) | |
348 | index[i] = channels + i; | |
349 | qsort(index, nchannels, sizeof(char*), channel_compare); | |
350 | for (i = 0; i < nchannels; ++i) | |
351 | mapping[i] = index[i] - channels; | |
352 | ||
353 | return 0; | |
354 | FAIL: | |
355 | return -1; | |
356 | } |