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author | Sean Bartell <wingedtachikoma@gmail.com> | 2011-06-25 21:32:25 -0400 |
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committer | Nils Wallménius <nils@rockbox.org> | 2012-04-25 22:13:20 +0200 |
commit | f40bfc9267b13b54e6379dfe7539447662879d24 (patch) | |
tree | 9b20069d5e62809ff434061ad730096836f916f2 /lib/rbcodec/codecs/libfaad/mp4.c | |
parent | a0009907de7a0107d49040d8a180f140e2eff299 (diff) | |
download | rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.tar.gz rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.zip |
Add codecs to librbcodec.
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>
Diffstat (limited to 'lib/rbcodec/codecs/libfaad/mp4.c')
-rw-r--r-- | lib/rbcodec/codecs/libfaad/mp4.c | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libfaad/mp4.c b/lib/rbcodec/codecs/libfaad/mp4.c new file mode 100644 index 0000000000..94e1a1daaa --- /dev/null +++ b/lib/rbcodec/codecs/libfaad/mp4.c | |||
@@ -0,0 +1,300 @@ | |||
1 | /* | ||
2 | ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding | ||
3 | ** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com | ||
4 | ** | ||
5 | ** This program is free software; you can redistribute it and/or modify | ||
6 | ** it under the terms of the GNU General Public License as published by | ||
7 | ** the Free Software Foundation; either version 2 of the License, or | ||
8 | ** (at your option) any later version. | ||
9 | ** | ||
10 | ** This program is distributed in the hope that it will be useful, | ||
11 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
13 | ** GNU General Public License for more details. | ||
14 | ** | ||
15 | ** You should have received a copy of the GNU General Public License | ||
16 | ** along with this program; if not, write to the Free Software | ||
17 | ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
18 | ** | ||
19 | ** Any non-GPL usage of this software or parts of this software is strictly | ||
20 | ** forbidden. | ||
21 | ** | ||
22 | ** Commercial non-GPL licensing of this software is possible. | ||
23 | ** For more info contact Ahead Software through Mpeg4AAClicense@nero.com. | ||
24 | ** | ||
25 | ** $Id$ | ||
26 | **/ | ||
27 | |||
28 | #include "common.h" | ||
29 | #include "structs.h" | ||
30 | |||
31 | #include <stdlib.h> | ||
32 | |||
33 | #include "bits.h" | ||
34 | #include "mp4.h" | ||
35 | #include "syntax.h" | ||
36 | |||
37 | /* defines if an object type can be decoded by this library or not */ | ||
38 | static uint8_t ObjectTypesTable[32] = { | ||
39 | 0, /* 0 NULL */ | ||
40 | #ifdef MAIN_DEC | ||
41 | 1, /* 1 AAC Main */ | ||
42 | #else | ||
43 | 0, /* 1 AAC Main */ | ||
44 | #endif | ||
45 | 1, /* 2 AAC LC */ | ||
46 | #ifdef SSR_DEC | ||
47 | 1, /* 3 AAC SSR */ | ||
48 | #else | ||
49 | 0, /* 3 AAC SSR */ | ||
50 | #endif | ||
51 | #ifdef LTP_DEC | ||
52 | 1, /* 4 AAC LTP */ | ||
53 | #else | ||
54 | 0, /* 4 AAC LTP */ | ||
55 | #endif | ||
56 | #ifdef SBR_DEC | ||
57 | 1, /* 5 SBR */ | ||
58 | #else | ||
59 | 0, /* 5 SBR */ | ||
60 | #endif | ||
61 | #ifdef SCALABLE_DEC | ||
62 | 1, /* 6 AAC Scalable */ | ||
63 | #else | ||
64 | 0, /* 6 AAC Scalable */ | ||
65 | #endif | ||
66 | 0, /* 7 TwinVQ */ | ||
67 | 0, /* 8 CELP */ | ||
68 | 0, /* 9 HVXC */ | ||
69 | 0, /* 10 Reserved */ | ||
70 | 0, /* 11 Reserved */ | ||
71 | 0, /* 12 TTSI */ | ||
72 | 0, /* 13 Main synthetic */ | ||
73 | 0, /* 14 Wavetable synthesis */ | ||
74 | 0, /* 15 General MIDI */ | ||
75 | 0, /* 16 Algorithmic Synthesis and Audio FX */ | ||
76 | |||
77 | /* MPEG-4 Version 2 */ | ||
78 | #ifdef ERROR_RESILIENCE | ||
79 | 1, /* 17 ER AAC LC */ | ||
80 | 0, /* 18 (Reserved) */ | ||
81 | #ifdef LTP_DEC | ||
82 | 1, /* 19 ER AAC LTP */ | ||
83 | #else | ||
84 | 0, /* 19 ER AAC LTP */ | ||
85 | #endif | ||
86 | #ifdef SCALABLE_DEC | ||
87 | 1, /* 20 ER AAC scalable */ | ||
88 | #else | ||
89 | 0, /* 20 ER AAC scalable */ | ||
90 | #endif | ||
91 | 0, /* 21 ER TwinVQ */ | ||
92 | 0, /* 22 ER BSAC */ | ||
93 | #ifdef LD_DEC | ||
94 | 1, /* 23 ER AAC LD */ | ||
95 | #else | ||
96 | 0, /* 23 ER AAC LD */ | ||
97 | #endif | ||
98 | 0, /* 24 ER CELP */ | ||
99 | 0, /* 25 ER HVXC */ | ||
100 | 0, /* 26 ER HILN */ | ||
101 | 0, /* 27 ER Parametric */ | ||
102 | #else /* No ER defined */ | ||
103 | 0, /* 17 ER AAC LC */ | ||
104 | 0, /* 18 (Reserved) */ | ||
105 | 0, /* 19 ER AAC LTP */ | ||
106 | 0, /* 20 ER AAC scalable */ | ||
107 | 0, /* 21 ER TwinVQ */ | ||
108 | 0, /* 22 ER BSAC */ | ||
109 | 0, /* 23 ER AAC LD */ | ||
110 | 0, /* 24 ER CELP */ | ||
111 | 0, /* 25 ER HVXC */ | ||
112 | 0, /* 26 ER HILN */ | ||
113 | 0, /* 27 ER Parametric */ | ||
114 | #endif | ||
115 | 0, /* 28 (Reserved) */ | ||
116 | 0, /* 29 (Reserved) */ | ||
117 | 0, /* 30 (Reserved) */ | ||
118 | 0 /* 31 (Reserved) */ | ||
119 | }; | ||
120 | |||
121 | /* Table 1.6.1 */ | ||
122 | /* rockbox: not used | ||
123 | int8_t NEAACDECAPI NeAACDecAudioSpecificConfig(uint8_t *pBuffer, | ||
124 | uint32_t buffer_size, | ||
125 | mp4AudioSpecificConfig *mp4ASC) | ||
126 | { | ||
127 | return AudioSpecificConfig2(pBuffer, buffer_size, mp4ASC, NULL); | ||
128 | }*/ | ||
129 | |||
130 | int8_t AudioSpecificConfig2(uint8_t *pBuffer, | ||
131 | uint32_t buffer_size, | ||
132 | mp4AudioSpecificConfig *mp4ASC, | ||
133 | program_config *pce) | ||
134 | { | ||
135 | bitfile ld; | ||
136 | int8_t result = 0; | ||
137 | #ifdef SBR_DEC | ||
138 | int8_t bits_to_decode = 0; | ||
139 | #endif | ||
140 | |||
141 | if (pBuffer == NULL) | ||
142 | return -7; | ||
143 | if (mp4ASC == NULL) | ||
144 | return -8; | ||
145 | |||
146 | memset(mp4ASC, 0, sizeof(mp4AudioSpecificConfig)); | ||
147 | |||
148 | faad_initbits(&ld, pBuffer, buffer_size); | ||
149 | faad_byte_align(&ld); | ||
150 | |||
151 | mp4ASC->objectTypeIndex = (uint8_t)faad_getbits(&ld, 5 | ||
152 | DEBUGVAR(1,1,"parse_audio_decoder_specific_info(): ObjectTypeIndex")); | ||
153 | |||
154 | mp4ASC->samplingFrequencyIndex = (uint8_t)faad_getbits(&ld, 4 | ||
155 | DEBUGVAR(1,2,"parse_audio_decoder_specific_info(): SamplingFrequencyIndex")); | ||
156 | |||
157 | mp4ASC->channelsConfiguration = (uint8_t)faad_getbits(&ld, 4 | ||
158 | DEBUGVAR(1,3,"parse_audio_decoder_specific_info(): ChannelsConfiguration")); | ||
159 | |||
160 | mp4ASC->samplingFrequency = get_sample_rate(mp4ASC->samplingFrequencyIndex); | ||
161 | |||
162 | if (ObjectTypesTable[mp4ASC->objectTypeIndex] != 1) | ||
163 | { | ||
164 | faad_endbits(&ld); | ||
165 | return -1; | ||
166 | } | ||
167 | |||
168 | if (mp4ASC->samplingFrequency == 0) | ||
169 | { | ||
170 | faad_endbits(&ld); | ||
171 | return -2; | ||
172 | } | ||
173 | |||
174 | if (mp4ASC->channelsConfiguration > 7) | ||
175 | { | ||
176 | faad_endbits(&ld); | ||
177 | return -3; | ||
178 | } | ||
179 | |||
180 | #if (defined(PS_DEC) || defined(DRM_PS)) | ||
181 | /* check if we have a mono file */ | ||
182 | if (mp4ASC->channelsConfiguration == 1) | ||
183 | { | ||
184 | /* upMatrix to 2 channels for implicit signalling of PS */ | ||
185 | mp4ASC->channelsConfiguration = 2; | ||
186 | } | ||
187 | #endif | ||
188 | |||
189 | #ifdef SBR_DEC | ||
190 | mp4ASC->sbr_present_flag = -1; | ||
191 | if (mp4ASC->objectTypeIndex == 5) | ||
192 | { | ||
193 | uint8_t tmp; | ||
194 | |||
195 | mp4ASC->sbr_present_flag = 1; | ||
196 | tmp = (uint8_t)faad_getbits(&ld, 4 | ||
197 | DEBUGVAR(1,5,"parse_audio_decoder_specific_info(): extensionSamplingFrequencyIndex")); | ||
198 | /* check for downsampled SBR */ | ||
199 | if (tmp == mp4ASC->samplingFrequencyIndex) | ||
200 | mp4ASC->downSampledSBR = 1; | ||
201 | mp4ASC->samplingFrequencyIndex = tmp; | ||
202 | if (mp4ASC->samplingFrequencyIndex == 15) | ||
203 | { | ||
204 | mp4ASC->samplingFrequency = (uint32_t)faad_getbits(&ld, 24 | ||
205 | DEBUGVAR(1,6,"parse_audio_decoder_specific_info(): extensionSamplingFrequencyIndex")); | ||
206 | } else { | ||
207 | mp4ASC->samplingFrequency = get_sample_rate(mp4ASC->samplingFrequencyIndex); | ||
208 | } | ||
209 | mp4ASC->objectTypeIndex = (uint8_t)faad_getbits(&ld, 5 | ||
210 | DEBUGVAR(1,7,"parse_audio_decoder_specific_info(): ObjectTypeIndex")); | ||
211 | } | ||
212 | #endif | ||
213 | |||
214 | /* get GASpecificConfig */ | ||
215 | if (mp4ASC->objectTypeIndex == 1 || mp4ASC->objectTypeIndex == 2 || | ||
216 | mp4ASC->objectTypeIndex == 3 || mp4ASC->objectTypeIndex == 4 || | ||
217 | mp4ASC->objectTypeIndex == 6 || mp4ASC->objectTypeIndex == 7) | ||
218 | { | ||
219 | result = GASpecificConfig(&ld, mp4ASC, pce); | ||
220 | |||
221 | #ifdef ERROR_RESILIENCE | ||
222 | } else if (mp4ASC->objectTypeIndex >= ER_OBJECT_START) { /* ER */ | ||
223 | result = GASpecificConfig(&ld, mp4ASC, pce); | ||
224 | mp4ASC->epConfig = (uint8_t)faad_getbits(&ld, 2 | ||
225 | DEBUGVAR(1,143,"parse_audio_decoder_specific_info(): epConfig")); | ||
226 | |||
227 | if (mp4ASC->epConfig != 0) | ||
228 | result = -5; | ||
229 | #endif | ||
230 | |||
231 | } else { | ||
232 | result = -4; | ||
233 | } | ||
234 | |||
235 | #ifdef SSR_DEC | ||
236 | /* shorter frames not allowed for SSR */ | ||
237 | if ((mp4ASC->objectTypeIndex == 4) && mp4ASC->frameLengthFlag) | ||
238 | return -6; | ||
239 | #endif | ||
240 | |||
241 | |||
242 | #ifdef SBR_DEC | ||
243 | bits_to_decode = (int8_t)(buffer_size*8 - faad_get_processed_bits(&ld)); | ||
244 | |||
245 | if ((mp4ASC->objectTypeIndex != 5) && (bits_to_decode >= 16)) | ||
246 | { | ||
247 | int16_t syncExtensionType = (int16_t)faad_getbits(&ld, 11 | ||
248 | DEBUGVAR(1,9,"parse_audio_decoder_specific_info(): syncExtensionType")); | ||
249 | |||
250 | if (syncExtensionType == 0x2b7) | ||
251 | { | ||
252 | mp4ASC->objectTypeIndex = (uint8_t)faad_getbits(&ld, 5 | ||
253 | DEBUGVAR(1,10,"parse_audio_decoder_specific_info(): extensionAudioObjectType")); | ||
254 | |||
255 | if (mp4ASC->objectTypeIndex == 5) | ||
256 | { | ||
257 | mp4ASC->sbr_present_flag = (uint8_t)faad_get1bit(&ld | ||
258 | DEBUGVAR(1,11,"parse_audio_decoder_specific_info(): sbr_present_flag")); | ||
259 | |||
260 | if (mp4ASC->sbr_present_flag) | ||
261 | { | ||
262 | uint8_t tmp; | ||
263 | tmp = (uint8_t)faad_getbits(&ld, 4 | ||
264 | DEBUGVAR(1,12,"parse_audio_decoder_specific_info(): extensionSamplingFrequencyIndex")); | ||
265 | |||
266 | /* check for downsampled SBR */ | ||
267 | if (tmp == mp4ASC->samplingFrequencyIndex) | ||
268 | mp4ASC->downSampledSBR = 1; | ||
269 | mp4ASC->samplingFrequencyIndex = tmp; | ||
270 | |||
271 | if (mp4ASC->samplingFrequencyIndex == 15) | ||
272 | { | ||
273 | mp4ASC->samplingFrequency = (uint32_t)faad_getbits(&ld, 24 | ||
274 | DEBUGVAR(1,13,"parse_audio_decoder_specific_info(): extensionSamplingFrequencyIndex")); | ||
275 | } else { | ||
276 | mp4ASC->samplingFrequency = get_sample_rate(mp4ASC->samplingFrequencyIndex); | ||
277 | } | ||
278 | } | ||
279 | } | ||
280 | } | ||
281 | } | ||
282 | |||
283 | /* no SBR signalled, this could mean either implicit signalling or no SBR in this file */ | ||
284 | /* MPEG specification states: assume SBR on files with samplerate <= 24000 Hz */ | ||
285 | if (mp4ASC->sbr_present_flag == -1) | ||
286 | { | ||
287 | if (mp4ASC->samplingFrequency <= 24000) | ||
288 | { | ||
289 | mp4ASC->samplingFrequency *= 2; | ||
290 | mp4ASC->forceUpSampling = 1; | ||
291 | } else /* > 24000*/ { | ||
292 | mp4ASC->downSampledSBR = 1; | ||
293 | } | ||
294 | } | ||
295 | #endif | ||
296 | |||
297 | faad_endbits(&ld); | ||
298 | |||
299 | return result; | ||
300 | } | ||