FFmpeg
mov_chan.c
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1 /*
2  * Copyright (c) 2011 Justin Ruggles
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * mov 'chan' tag reading/writing.
23  * @author Justin Ruggles
24  */
25 
26 #include <assert.h>
27 #include <stdint.h>
28 
29 #include "libavutil/avassert.h"
30 #include "libavutil/channel_layout.h"
31 #include "libavutil/mem.h"
32 #include "libavcodec/codec_id.h"
33 #include "mov_chan.h"
34 
35 enum {
36  c_L = AV_CHAN_FRONT_LEFT,
37  c_R = AV_CHAN_FRONT_RIGHT,
38  c_C = AV_CHAN_FRONT_CENTER,
39  c_LFE = AV_CHAN_LOW_FREQUENCY,
40  c_Rls = AV_CHAN_BACK_LEFT,
41  c_Rrs = AV_CHAN_BACK_RIGHT,
42  c_Lc = AV_CHAN_FRONT_LEFT_OF_CENTER,
43  c_Rc = AV_CHAN_FRONT_RIGHT_OF_CENTER,
44  c_Cs = AV_CHAN_BACK_CENTER,
45  c_Ls = AV_CHAN_SIDE_LEFT,
46  c_Rs = AV_CHAN_SIDE_RIGHT,
47  c_Ts = AV_CHAN_TOP_CENTER,
48  c_Vhl = AV_CHAN_TOP_FRONT_LEFT,
49  c_Vhc = AV_CHAN_TOP_FRONT_CENTER,
50  c_Vhr = AV_CHAN_TOP_FRONT_RIGHT,
51  c_Rlt = AV_CHAN_TOP_BACK_LEFT,
52  // = AV_CHAN_TOP_BACK_CENTER,
53  c_Rrt = AV_CHAN_TOP_BACK_RIGHT,
54  c_Lt = AV_CHAN_STEREO_LEFT,
55  c_Rt = AV_CHAN_STEREO_RIGHT,
56  c_Lw = AV_CHAN_WIDE_LEFT,
57  c_Rw = AV_CHAN_WIDE_RIGHT,
58  c_Lsd = AV_CHAN_SURROUND_DIRECT_LEFT,
59  c_Rsd = AV_CHAN_SURROUND_DIRECT_RIGHT,
60  c_LFE2 = AV_CHAN_LOW_FREQUENCY_2,
61  // = AV_CHAN_TOP_SIDE_LEFT,
62  // = AV_CHAN_TOP_SIDE_RIGHT,
63  // = AV_CHAN_BOTTOM_FRONT_CENTER,
64  // = AV_CHAN_BOTTOM_FRONT_LEFT,
65  // = AV_CHAN_BOTTOM_FRONT_RIGHT,
66  c_W = AV_CHAN_AMBISONIC_BASE,
67  c_Y = AV_CHAN_AMBISONIC_BASE + 1,
68  c_Z = AV_CHAN_AMBISONIC_BASE + 2,
69  c_X = AV_CHAN_AMBISONIC_BASE + 3,
70  /* The following have no exact counterparts */
71  c_LFE1 = AV_CHAN_LOW_FREQUENCY,
72  c_Csd = AV_CHAN_NONE,
73  c_HI = AV_CHAN_NONE,
74  c_VI = AV_CHAN_NONE,
75  c_Haptic = AV_CHAN_NONE,
76 };
77 
78 enum {
79  iso_L = AV_CHAN_FRONT_LEFT,
80  iso_R = AV_CHAN_FRONT_RIGHT,
81  iso_C = AV_CHAN_FRONT_CENTER,
82  iso_LFE = AV_CHAN_LOW_FREQUENCY,
83  iso_Lsr = AV_CHAN_BACK_LEFT,
84  iso_Rsr = AV_CHAN_BACK_RIGHT,
85  iso_Lc = AV_CHAN_FRONT_LEFT_OF_CENTER,
86  iso_Rc = AV_CHAN_FRONT_RIGHT_OF_CENTER,
87  iso_Cs = AV_CHAN_BACK_CENTER,
88  iso_Ls = AV_CHAN_SIDE_LEFT,
89  iso_Rs = AV_CHAN_SIDE_RIGHT,
90  iso_Ts = AV_CHAN_TOP_CENTER,
91  iso_Lv = AV_CHAN_TOP_FRONT_LEFT,
92  iso_Cv = AV_CHAN_TOP_FRONT_CENTER,
93  iso_Rv = AV_CHAN_TOP_FRONT_RIGHT,
94  iso_Lvr = AV_CHAN_TOP_BACK_LEFT,
95  iso_Cvr = AV_CHAN_TOP_BACK_CENTER,
96  iso_Rvr = AV_CHAN_TOP_BACK_RIGHT,
97  // = AV_CHAN_STEREO_LEFT,
98  // = AV_CHAN_STEREO_RIGHT,
99  iso_Lw = AV_CHAN_WIDE_LEFT,
100  iso_Rw = AV_CHAN_WIDE_RIGHT,
101  iso_Lsd = AV_CHAN_SURROUND_DIRECT_LEFT,
102  iso_Rsd = AV_CHAN_SURROUND_DIRECT_RIGHT,
103  iso_LFE2 = AV_CHAN_LOW_FREQUENCY_2,
104  iso_Lvss = AV_CHAN_TOP_SIDE_LEFT,
105  iso_Rvss = AV_CHAN_TOP_SIDE_RIGHT,
106  iso_Cb = AV_CHAN_BOTTOM_FRONT_CENTER,
107  iso_Lb = AV_CHAN_BOTTOM_FRONT_LEFT,
108  iso_Rb = AV_CHAN_BOTTOM_FRONT_RIGHT,
109  iso_Lss = AV_CHAN_SIDE_SURROUND_LEFT,
110  iso_Rss = AV_CHAN_SIDE_SURROUND_RIGHT,
111  /* The following have no exact counterparts */
112  iso_Lvs = AV_CHAN_NONE,
113  iso_Rvs = AV_CHAN_NONE,
114 };
115 
116 struct MovChannelLayoutMap {
117  union {
118  uint32_t tag;
119  enum AVChannel id;
120  };
121 };
122 
123 #define TAG(_tag, _cnt) {.tag = _tag}
124 #define ID(_0) {.id = c_##_0}
125 #define CHLIST01(_tag, _1) CHLIST(_tag, 1, ID(_1))
126 #define CHLIST02(_tag, _1, _2) CHLIST(_tag, 2, ID(_1), ID(_2))
127 #define CHLIST03(_tag, _1, _2, _3) CHLIST(_tag, 3, ID(_1), ID(_2), ID(_3))
128 #define CHLIST04(_tag, _1, _2, _3, _4) CHLIST(_tag, 4, ID(_1), ID(_2), ID(_3), ID(_4))
129 #define CHLIST05(_tag, _1, _2, _3, _4, _5) CHLIST(_tag, 5, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5))
130 #define CHLIST06(_tag, _1, _2, _3, _4, _5, _6) CHLIST(_tag, 6, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6))
131 #define CHLIST07(_tag, _1, _2, _3, _4, _5, _6, _7) CHLIST(_tag, 7, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7))
132 #define CHLIST08(_tag, _1, _2, _3, _4, _5, _6, _7, _8) CHLIST(_tag, 8, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8))
133 #define CHLIST09(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9) CHLIST(_tag, 9, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9))
134 #define CHLIST16(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16) \
135  CHLIST(_tag, 16, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \
136  ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16))
137 #define CHLIST21(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21) \
138  CHLIST(_tag, 21, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \
139  ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16), ID(_17), ID(_18), ID(_19), ID(_20), ID(_21))
140 #define CHLIST24(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24) \
141  CHLIST(_tag, 24, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \
142  ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16), ID(_17), ID(_18), ID(_19), ID(_20), \
143  ID(_21), ID(_22), ID(_23), ID(_24))
144 
145 #define MOV_CH_LAYOUT_MAP \
146  CHLIST01( MOV_CH_LAYOUT_MONO, C )\
147  CHLIST02( MOV_CH_LAYOUT_STEREO, L, R )\
148  CHLIST02( MOV_CH_LAYOUT_STEREOHEADPHONES, L, R )\
149  CHLIST02( MOV_CH_LAYOUT_BINAURAL, L, R )\
150  CHLIST02( MOV_CH_LAYOUT_MIDSIDE, L, R )\
151  CHLIST02( MOV_CH_LAYOUT_XY, L, R )\
152  CHLIST02( MOV_CH_LAYOUT_MATRIXSTEREO, Lt, Rt )\
153  CHLIST02( MOV_CH_LAYOUT_AC3_1_0_1, C, LFE )\
154  CHLIST03( MOV_CH_LAYOUT_MPEG_3_0_A, L, R, C )\
155  CHLIST03( MOV_CH_LAYOUT_MPEG_3_0_B, C, L, R )\
156  CHLIST03( MOV_CH_LAYOUT_AC3_3_0, L, C, R )\
157  CHLIST03( MOV_CH_LAYOUT_ITU_2_1, L, R, Cs )\
158  CHLIST03( MOV_CH_LAYOUT_DVD_4, L, R, LFE )\
159  CHLIST04( MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, W, X, Y, Z )\
160  CHLIST04( MOV_CH_LAYOUT_QUADRAPHONIC, L, R, Rls, Rrs )\
161  CHLIST04( MOV_CH_LAYOUT_MPEG_4_0_A, L, R, C, Cs )\
162  CHLIST04( MOV_CH_LAYOUT_MPEG_4_0_B, C, L, R, Cs )\
163  CHLIST04( MOV_CH_LAYOUT_AC3_3_1, L, C, R, Cs )\
164  CHLIST04( MOV_CH_LAYOUT_ITU_2_2, L, R, Ls, Rs )\
165  CHLIST04( MOV_CH_LAYOUT_DVD_5, L, R, LFE, Cs )\
166  CHLIST04( MOV_CH_LAYOUT_AC3_2_1_1, L, R, Cs, LFE )\
167  CHLIST04( MOV_CH_LAYOUT_DVD_10, L, R, C, LFE )\
168  CHLIST04( MOV_CH_LAYOUT_AC3_3_0_1, L, C, R, LFE )\
169  CHLIST04( MOV_CH_LAYOUT_DTS_3_1, C, L, R, LFE )\
170  CHLIST05( MOV_CH_LAYOUT_PENTAGONAL, L, R, Rls, Rrs, C )\
171  CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_A, L, R, C, Ls, Rs )\
172  CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_B, L, R, Ls, Rs, C )\
173  CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_C, L, C, R, Ls, Rs )\
174  CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_D, C, L, R, Ls, Rs )\
175  CHLIST05( MOV_CH_LAYOUT_DVD_6, L, R, LFE, Ls, Rs )\
176  CHLIST05( MOV_CH_LAYOUT_DVD_18, L, R, Ls, Rs, LFE )\
177  CHLIST05( MOV_CH_LAYOUT_DVD_11, L, R, C, LFE, Cs )\
178  CHLIST05( MOV_CH_LAYOUT_AC3_3_1_1, L, C, R, Cs, LFE )\
179  CHLIST05( MOV_CH_LAYOUT_DTS_4_1, C, L, R, Cs, LFE )\
180  CHLIST06( MOV_CH_LAYOUT_HEXAGONAL, L, R, Rls, Rrs, C, Cs )\
181  CHLIST06( MOV_CH_LAYOUT_DTS_6_0_C, C, Cs, L, R, Rls, Rrs )\
182  CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_A, L, R, C, LFE, Ls, Rs )\
183  CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_B, L, R, Ls, Rs, C, LFE )\
184  CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_C, L, C, R, Ls, Rs, LFE )\
185  CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_D, C, L, R, Ls, Rs, LFE )\
186  CHLIST06( MOV_CH_LAYOUT_AUDIOUNIT_6_0, L, R, Ls, Rs, C, Cs )\
187  CHLIST06( MOV_CH_LAYOUT_AAC_6_0, C, L, R, Ls, Rs, Cs )\
188  CHLIST06( MOV_CH_LAYOUT_EAC3_6_0_A, L, C, R, Ls, Rs, Cs )\
189  CHLIST06( MOV_CH_LAYOUT_DTS_6_0_A, Lc, Rc, L, R, Ls, Rs )\
190  CHLIST06( MOV_CH_LAYOUT_DTS_6_0_B, C, L, R, Rls, Rrs, Ts )\
191  CHLIST07( MOV_CH_LAYOUT_MPEG_6_1_A, L, R, C, LFE, Ls, Rs, Cs )\
192  CHLIST07( MOV_CH_LAYOUT_AAC_6_1, C, L, R, Ls, Rs, Cs, LFE )\
193  CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_A, L, C, R, Ls, Rs, LFE, Cs )\
194  CHLIST07( MOV_CH_LAYOUT_DTS_6_1_D, C, L, R, Ls, Rs, LFE, Cs )\
195  CHLIST07( MOV_CH_LAYOUT_AUDIOUNIT_7_0, L, R, Ls, Rs, C, Rls, Rrs )\
196  CHLIST07( MOV_CH_LAYOUT_AAC_7_0, C, L, R, Ls, Rs, Rls, Rrs )\
197  CHLIST07( MOV_CH_LAYOUT_EAC3_7_0_A, L, C, R, Ls, Rs, Rls, Rrs )\
198  CHLIST07( MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, L, R, Ls, Rs, C, Lc, Rc )\
199  CHLIST07( MOV_CH_LAYOUT_DTS_7_0, Lc, C, Rc, L, R, Ls, Rs )\
200  CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_B, L, C, R, Ls, Rs, LFE, Ts )\
201  CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_C, L, C, R, Ls, Rs, LFE, Vhc )\
202  CHLIST07( MOV_CH_LAYOUT_DTS_6_1_A, Lc, Rc, L, R, Ls, Rs, LFE )\
203  CHLIST07( MOV_CH_LAYOUT_DTS_6_1_B, C, L, R, Rls, Rrs, Ts, LFE )\
204  CHLIST07( MOV_CH_LAYOUT_DTS_6_1_C, C, Cs, L, R, Rls, Rrs, LFE )\
205  CHLIST08( MOV_CH_LAYOUT_OCTAGONAL, L, R, Rls, Rrs, C, Cs, Ls, Rs )\
206  CHLIST08( MOV_CH_LAYOUT_AAC_OCTAGONAL, C, L, R, Ls, Rs, Rls, Rrs, Cs )\
207  CHLIST08( MOV_CH_LAYOUT_CUBE, L, R, Rls, Rrs, Vhl, Vhr, Rlt, Rrt )\
208  CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_A, L, R, C, LFE, Ls, Rs, Lc, Rc )\
209  CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_B, C, Lc, Rc, L, R, Ls, Rs, LFE )\
210  CHLIST08( MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, L, R, Ls, Rs, C, LFE, Lc, Rc )\
211  CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_B, L, C, R, Ls, Rs, LFE, Lc, Rc )\
212  CHLIST08( MOV_CH_LAYOUT_DTS_7_1, Lc, C, Rc, L, R, Ls, Rs, LFE )\
213  CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_C, L, R, C, LFE, Ls, Rs, Rls, Rrs )\
214  CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_A, L, C, R, Ls, Rs, LFE, Rls, Rrs )\
215  CHLIST08( MOV_CH_LAYOUT_SMPTE_DTV, L, R, C, LFE, Ls, Rs, Lt, Rt )\
216  CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_C, L, C, R, Ls, Rs, LFE, Lsd, Rsd )\
217  CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_D, L, C, R, Ls, Rs, LFE, Lw, Rw )\
218  CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_E, L, C, R, Ls, Rs, LFE, Vhl, Vhr )\
219  CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_F, L, C, R, Ls, Rs, LFE, Cs, Ts )\
220  CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_G, L, C, R, Ls, Rs, LFE, Cs, Vhc )\
221  CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_H, L, C, R, Ls, Rs, LFE, Ts, Vhc )\
222  CHLIST08( MOV_CH_LAYOUT_DTS_8_0_A, Lc, Rc, L, R, Ls, Rs, Rls, Rrs )\
223  CHLIST08( MOV_CH_LAYOUT_DTS_8_0_B, Lc, C, Rc, L, R, Ls, Cs, Rs )\
224  CHLIST09( MOV_CH_LAYOUT_DTS_8_1_A, Lc, Rc, L, R, Ls, Rs, Rls, Rrs, LFE )\
225  CHLIST09( MOV_CH_LAYOUT_DTS_8_1_B, Lc, C, Rc, L, R, Ls, Cs, Rs, LFE )\
226  CHLIST16( MOV_CH_LAYOUT_TMH_10_2_STD, L, R, C, Vhc, Lsd, Rsd, Ls, Rs, Vhl, Vhr, Lw, Rw, Csd, Cs, LFE1, LFE2 )\
227  CHLIST21( MOV_CH_LAYOUT_TMH_10_2_FULL, L, R, C, Vhc, Lsd, Rsd, Ls, Rs, Vhl, Vhr, Lw, Rw, Csd, Cs, LFE1, LFE2, Lc, Rc, HI, VI, Haptic )\
228 
229 #define CHLIST(_tag, _cnt, ...) static_assert((_tag & 0xffff) == _cnt, "Channel count of " #_tag " is not " #_cnt);
230 MOV_CH_LAYOUT_MAP
231 #undef CHLIST
232 #define CHLIST(_tag, _cnt, ...) TAG(_tag, _cnt), __VA_ARGS__,
233 static const struct MovChannelLayoutMap mov_ch_layout_map[] = {
234  MOV_CH_LAYOUT_MAP
235  { {0} },
236 };
237 
238 #undef ID
239 #undef TAG
240 #define ID(_0) {.id = iso_##_0}
241 #define TAG(_tag, _cnt) {.tag = (_tag << 16) | _cnt}
242 
243 /* ISO/IEC 23001-8 */
244 static const struct MovChannelLayoutMap iso_ch_layout_map[] = {
245  CHLIST01( 1, C )
246  CHLIST02( 2, L, R )
247  CHLIST03( 3, C, L, R )
248  CHLIST04( 4, C, L, R, Cs )
249  CHLIST05( 5, C, L, R, Ls, Rs )
250  CHLIST06( 6, C, L, R, Ls, Rs, LFE )
251  CHLIST08( 7, C, Lc, Rc, L, R, Ls, Rs, LFE )
252  CHLIST03( 9, L, R, Cs )
253  CHLIST04( 10, L, R, Ls, Rs )
254  CHLIST07( 11, C, L, R, Ls, Rs, Cs, LFE )
255  CHLIST08( 12, C, L, R, Ls, Rs, Lsr, Rsr, LFE )
256  CHLIST24( 13, C, Lc, Rc, L, R, Lss, Rss, Lsr, Rsr, Cs, LFE, LFE2, Cv, Lv, Rv, Lvss, Rvss, Ts, Lvr, Rvr, Cvr, Cb, Lb, Rb)
257  CHLIST08( 14, C, L, R, Ls, Rs, LFE, Lv, Rv)
258  { {0} },
259 };
260 
261 static const enum MovChannelLayoutTag mov_ch_layouts_aac[] = {
262  MOV_CH_LAYOUT_MONO,
263  MOV_CH_LAYOUT_STEREO,
264  MOV_CH_LAYOUT_AC3_1_0_1,
265  MOV_CH_LAYOUT_MPEG_3_0_B,
266  MOV_CH_LAYOUT_ITU_2_1,
267  MOV_CH_LAYOUT_DVD_4,
268  MOV_CH_LAYOUT_QUADRAPHONIC,
269  MOV_CH_LAYOUT_MPEG_4_0_B,
270  MOV_CH_LAYOUT_ITU_2_2,
271  MOV_CH_LAYOUT_AC3_2_1_1,
272  MOV_CH_LAYOUT_DTS_3_1,
273  MOV_CH_LAYOUT_MPEG_5_0_D,
274  MOV_CH_LAYOUT_DVD_18,
275  MOV_CH_LAYOUT_DTS_4_1,
276  MOV_CH_LAYOUT_MPEG_5_1_D,
277  MOV_CH_LAYOUT_AAC_6_0,
278  MOV_CH_LAYOUT_DTS_6_0_A,
279  MOV_CH_LAYOUT_AAC_6_1,
280  MOV_CH_LAYOUT_AAC_7_0,
281  MOV_CH_LAYOUT_DTS_6_1_A,
282  MOV_CH_LAYOUT_AAC_OCTAGONAL,
283  MOV_CH_LAYOUT_MPEG_7_1_B,
284  MOV_CH_LAYOUT_DTS_8_0_A,
285  0,
286 };
287 
288 static const enum MovChannelLayoutTag mov_ch_layouts_ac3[] = {
289  MOV_CH_LAYOUT_MONO,
290  MOV_CH_LAYOUT_STEREO,
291  MOV_CH_LAYOUT_AC3_1_0_1,
292  MOV_CH_LAYOUT_AC3_3_0,
293  MOV_CH_LAYOUT_ITU_2_1,
294  MOV_CH_LAYOUT_DVD_4,
295  MOV_CH_LAYOUT_AC3_3_1,
296  MOV_CH_LAYOUT_ITU_2_2,
297  MOV_CH_LAYOUT_AC3_2_1_1,
298  MOV_CH_LAYOUT_AC3_3_0_1,
299  MOV_CH_LAYOUT_MPEG_5_0_C,
300  MOV_CH_LAYOUT_DVD_18,
301  MOV_CH_LAYOUT_AC3_3_1_1,
302  MOV_CH_LAYOUT_MPEG_5_1_C,
303  0,
304 };
305 
306 static const enum MovChannelLayoutTag mov_ch_layouts_alac[] = {
307  MOV_CH_LAYOUT_MONO,
308  MOV_CH_LAYOUT_STEREO,
309  MOV_CH_LAYOUT_MPEG_3_0_B,
310  MOV_CH_LAYOUT_MPEG_4_0_B,
311  MOV_CH_LAYOUT_MPEG_5_0_D,
312  MOV_CH_LAYOUT_MPEG_5_1_D,
313  MOV_CH_LAYOUT_AAC_6_1,
314  MOV_CH_LAYOUT_MPEG_7_1_B,
315  0,
316 };
317 
318 static const enum MovChannelLayoutTag mov_ch_layouts_wav[] = {
319  MOV_CH_LAYOUT_MONO,
320  MOV_CH_LAYOUT_STEREO,
321  MOV_CH_LAYOUT_MATRIXSTEREO,
322  MOV_CH_LAYOUT_MPEG_3_0_A,
323  MOV_CH_LAYOUT_QUADRAPHONIC,
324  MOV_CH_LAYOUT_MPEG_5_0_A,
325  MOV_CH_LAYOUT_MPEG_5_1_A,
326  MOV_CH_LAYOUT_MPEG_6_1_A,
327  MOV_CH_LAYOUT_MPEG_7_1_A,
328  MOV_CH_LAYOUT_MPEG_7_1_C,
329  MOV_CH_LAYOUT_SMPTE_DTV,
330  0,
331 };
332 
333 static const struct {
334  enum AVCodecID codec_id;
335  const enum MovChannelLayoutTag *layouts;
336 } mov_codec_ch_layouts[] = {
337  { AV_CODEC_ID_AAC, mov_ch_layouts_aac },
338  { AV_CODEC_ID_AC3, mov_ch_layouts_ac3 },
339  { AV_CODEC_ID_ALAC, mov_ch_layouts_alac },
340  { AV_CODEC_ID_PCM_U8, mov_ch_layouts_wav },
341  { AV_CODEC_ID_PCM_S8, mov_ch_layouts_wav },
342  { AV_CODEC_ID_PCM_S16LE, mov_ch_layouts_wav },
343  { AV_CODEC_ID_PCM_S16BE, mov_ch_layouts_wav },
344  { AV_CODEC_ID_PCM_S24LE, mov_ch_layouts_wav },
345  { AV_CODEC_ID_PCM_S24BE, mov_ch_layouts_wav },
346  { AV_CODEC_ID_PCM_S32LE, mov_ch_layouts_wav },
347  { AV_CODEC_ID_PCM_S32BE, mov_ch_layouts_wav },
348  { AV_CODEC_ID_PCM_F32LE, mov_ch_layouts_wav },
349  { AV_CODEC_ID_PCM_F32BE, mov_ch_layouts_wav },
350  { AV_CODEC_ID_PCM_F64LE, mov_ch_layouts_wav },
351  { AV_CODEC_ID_PCM_F64BE, mov_ch_layouts_wav },
352  { AV_CODEC_ID_NONE, NULL },
353 };
354 
355 static const struct MovChannelLayoutMap* find_layout_map(uint32_t tag, const struct MovChannelLayoutMap *map)
356 {
357  for (int i = 0; map[i].tag & 0xffff; i += 1 + (map[i].tag & 0xffff))
358  if (map[i].tag == tag)
359  return &map[i + 1];
360  return NULL;
361 }
362 
363 /**
364  * Get the channel layout for the specified non-special channel layout tag if
365  * known.
366  *
367  * @param[in,out] ch_layout channel layout
368  * @param[in] tag channel layout tag
369  * @return <0 on error
370  */
371 static int mov_get_channel_layout(AVChannelLayout *ch_layout, uint32_t tag, uint64_t omitted_channel_map, const struct MovChannelLayoutMap *map)
372 {
373  const struct MovChannelLayoutMap *layout_map;
374 
375  /* find the channel layout for the specified layout tag */
376  layout_map = find_layout_map(tag, map);
377  if (layout_map) {
378  int ret;
379  int map_layout_nb_channels = tag & 0xFFFF;
380  int nb_channels = ch_layout->nb_channels;
381 
382  /* Omitted channel bits must not exceed number of channels in map */
383  if (omitted_channel_map >> map_layout_nb_channels)
384  return AVERROR_INVALIDDATA;
385 
386  av_channel_layout_uninit(ch_layout);
387  ret = av_channel_layout_custom_init(ch_layout, nb_channels);
388  if (ret < 0)
389  return ret;
390 
391  for (int i = 0, idx = 0; i < map_layout_nb_channels && idx < nb_channels; i++, omitted_channel_map >>= 1) {
392  if (!(omitted_channel_map & 1)) {
393  enum AVChannel id = layout_map[i].id;
394  ch_layout->u.map[idx++].id = (id != AV_CHAN_NONE ? id : AV_CHAN_UNKNOWN);
395  }
396  }
397 
398  return av_channel_layout_retype(ch_layout, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
399  }
400  return 0;
401 }
402 
403 static enum AVChannel mov_get_channel_id(uint32_t label)
404 {
405  if (label == 0)
406  return AV_CHAN_UNUSED;
407  if (label <= 18)
408  return (label - 1);
409  if (label == 35)
410  return AV_CHAN_WIDE_LEFT;
411  if (label == 36)
412  return AV_CHAN_WIDE_RIGHT;
413  if (label == 37)
414  return AV_CHAN_LOW_FREQUENCY_2;
415  if (label == 38)
416  return AV_CHAN_STEREO_LEFT;
417  if (label == 39)
418  return AV_CHAN_STEREO_RIGHT;
419  return AV_CHAN_UNKNOWN;
420 }
421 
422 static uint32_t mov_get_channel_label(enum AVChannel channel)
423 {
424  if (channel < 0)
425  return 0;
426  if (channel <= AV_CHAN_TOP_BACK_RIGHT)
427  return channel + 1;
428  if (channel == AV_CHAN_WIDE_LEFT)
429  return 35;
430  if (channel == AV_CHAN_WIDE_RIGHT)
431  return 36;
432  if (channel == AV_CHAN_LOW_FREQUENCY_2)
433  return 37;
434  if (channel == AV_CHAN_STEREO_LEFT)
435  return 38;
436  if (channel == AV_CHAN_STEREO_RIGHT)
437  return 39;
438  return 0;
439 }
440 
441 static int is_layout_valid_for_tag(const AVChannelLayout *ch_layout, uint32_t tag, const struct MovChannelLayoutMap *map)
442 {
443  const struct MovChannelLayoutMap *layout_map;
444  int channels = ch_layout->nb_channels;
445 
446  /* get the layout map based on the channel count */
447  if ((tag & 0xFFFF) != channels)
448  return 0;
449 
450  layout_map = find_layout_map(tag, map);
451  if (layout_map) {
452  int i;
453  for (i = 0; i < channels; i++) {
454  if (av_channel_layout_channel_from_index(ch_layout, i) != layout_map[i].id)
455  break;
456  }
457  if (i == channels)
458  return 1;
459  }
460  return 0;
461 }
462 
463 int ff_mov_get_channel_layout_tag(const AVCodecParameters *par,
464  uint32_t *layout,
465  uint32_t *bitmap,
466  uint32_t **pchannel_desc)
467 {
468  int i;
469  uint32_t tag = 0;
470  const enum MovChannelLayoutTag *layouts = NULL;
471 
472  /* find the layout list for the specified codec */
473  for (i = 0; mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE; i++) {
474  if (mov_codec_ch_layouts[i].codec_id == par->codec_id)
475  break;
476  }
477  if (mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE)
478  layouts = mov_codec_ch_layouts[i].layouts;
479 
480  if (layouts) {
481  /* find the layout tag for the specified channel layout */
482  for (i = 0; layouts[i] != 0; i++)
483  if (is_layout_valid_for_tag(&par->ch_layout, layouts[i], mov_ch_layout_map))
484  break;
485 
486  tag = layouts[i];
487  }
488 
489  *layout = tag;
490  *bitmap = 0;
491  *pchannel_desc = NULL;
492 
493  /* if no tag was found, use channel bitmap or description as a backup if possible */
494  if (tag == 0) {
495  uint32_t *channel_desc;
496  if (par->ch_layout.order == AV_CHANNEL_ORDER_NATIVE &&
497  par->ch_layout.u.mask < 0x40000) {
498  *layout = MOV_CH_LAYOUT_USE_BITMAP;
499  *bitmap = (uint32_t)par->ch_layout.u.mask;
500  return 0;
501  } else if (par->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC)
502  return AVERROR(ENOSYS);
503 
504  channel_desc = av_malloc_array(par->ch_layout.nb_channels, sizeof(*channel_desc));
505  if (!channel_desc)
506  return AVERROR(ENOMEM);
507 
508  for (i = 0; i < par->ch_layout.nb_channels; i++) {
509  channel_desc[i] =
510  mov_get_channel_label(av_channel_layout_channel_from_index(&par->ch_layout, i));
511 
512  if (channel_desc[i] == 0) {
513  av_free(channel_desc);
514  return AVERROR(ENOSYS);
515  }
516  }
517 
518  *pchannel_desc = channel_desc;
519  }
520 
521  return 0;
522 }
523 
524 int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
525  int64_t size)
526 {
527  uint32_t layout_tag, bitmap, num_descr;
528  int ret;
529  AVChannelLayout *ch_layout = &st->codecpar->ch_layout;
530 
531  if (size < 12)
532  return AVERROR_INVALIDDATA;
533 
534  layout_tag = avio_rb32(pb);
535  bitmap = avio_rb32(pb);
536  num_descr = avio_rb32(pb);
537 
538  av_log(s, AV_LOG_DEBUG, "chan: layout=%"PRIu32" "
539  "bitmap=%"PRIu32" num_descr=%"PRIu32"\n",
540  layout_tag, bitmap, num_descr);
541 
542  if (size < 12ULL + num_descr * 20ULL)
543  return 0;
544 
545  if (layout_tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS) {
546  int nb_channels = ch_layout->nb_channels;
547 
548  if (!num_descr || num_descr < nb_channels) {
549  av_log(s, AV_LOG_ERROR, "got %d channel descriptions when at least %d were needed\n",
550  num_descr, nb_channels);
551  return AVERROR_INVALIDDATA;
552  }
553 
554  if (num_descr > nb_channels) {
555  int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT;
556  av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
557  "got %d channel descriptions when number of channels is %d\n",
558  num_descr, nb_channels);
559  if (strict)
560  return AVERROR_INVALIDDATA;
561  av_log(s, AV_LOG_WARNING, "capping channel descriptions to the number of channels\n");
562  num_descr = nb_channels;
563  }
564 
565  av_channel_layout_uninit(ch_layout);
566  ret = av_channel_layout_custom_init(ch_layout, nb_channels);
567  if (ret < 0)
568  goto out;
569 
570  for (int i = 0; i < num_descr; i++) {
571  uint32_t label;
572  if (pb->eof_reached) {
573  av_log(s, AV_LOG_ERROR,
574  "reached EOF while reading channel layout\n");
575  return AVERROR_INVALIDDATA;
576  }
577  label = avio_rb32(pb); // mChannelLabel
578  avio_rb32(pb); // mChannelFlags
579  avio_rl32(pb); // mCoordinates[0]
580  avio_rl32(pb); // mCoordinates[1]
581  avio_rl32(pb); // mCoordinates[2]
582  size -= 20;
583  ch_layout->u.map[i].id = mov_get_channel_id(label);
584  }
585 
586  ret = av_channel_layout_retype(ch_layout, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
587  if (ret < 0)
588  goto out;
589  } else if (layout_tag == MOV_CH_LAYOUT_USE_BITMAP) {
590  if (!ch_layout->nb_channels || av_popcount(bitmap) == ch_layout->nb_channels) {
591  if (bitmap < 0x40000) {
592  av_channel_layout_uninit(ch_layout);
593  av_channel_layout_from_mask(ch_layout, bitmap);
594  }
595  } else {
596  av_log(s, AV_LOG_WARNING, "ignoring channel layout bitmap with %d channels because number of channels is %d\n",
597  av_popcount64(bitmap), ch_layout->nb_channels);
598  }
599  } else if (layout_tag & 0xFFFF) {
600  int nb_channels = layout_tag & 0xFFFF;
601  if (!ch_layout->nb_channels)
602  ch_layout->nb_channels = nb_channels;
603  if (nb_channels == ch_layout->nb_channels) {
604  ret = mov_get_channel_layout(ch_layout, layout_tag, 0, mov_ch_layout_map);
605  if (ret < 0)
606  return ret;
607  } else {
608  av_log(s, AV_LOG_WARNING, "ignoring layout tag with %d channels because number of channels is %d\n",
609  nb_channels, ch_layout->nb_channels);
610  }
611  }
612  ret = 0;
613 
614 out:
615  avio_skip(pb, size - 12);
616 
617  return ret;
618 }
619 
620 /* ISO/IEC 23001-8, table 8 */
621 static const enum AVChannel iso_channel_position[] = {
622  [0] = AV_CHAN_FRONT_LEFT, // left front
623  [1] = AV_CHAN_FRONT_RIGHT, // right front
624  [2] = AV_CHAN_FRONT_CENTER, // centre front
625  [3] = AV_CHAN_LOW_FREQUENCY, // low frequency enhancement
626  [4] = AV_CHAN_SIDE_LEFT, // left surround
627  [5] = AV_CHAN_SIDE_RIGHT, // right surround
628  [6] = AV_CHAN_FRONT_LEFT_OF_CENTER, // left front centre
629  [7] = AV_CHAN_FRONT_RIGHT_OF_CENTER, // right front centre
630  [8] = AV_CHAN_BACK_LEFT, // rear surround left
631  [9] = AV_CHAN_BACK_RIGHT, // rear surround right
632  [10] = AV_CHAN_BACK_CENTER, // rear centre
633  [11] = AV_CHAN_SURROUND_DIRECT_LEFT, // left surround direct
634  [12] = AV_CHAN_SURROUND_DIRECT_RIGHT, // right surround direct
635  [13] = AV_CHAN_SIDE_SURROUND_LEFT, // left side surround
636  [14] = AV_CHAN_SIDE_SURROUND_RIGHT, // right side surround
637  [15] = AV_CHAN_WIDE_LEFT, // left wide front
638  [16] = AV_CHAN_WIDE_RIGHT, // right wide front
639  [17] = AV_CHAN_TOP_FRONT_LEFT, // left front vertical height
640  [18] = AV_CHAN_TOP_FRONT_RIGHT, // right front vertical height
641  [19] = AV_CHAN_TOP_FRONT_CENTER, // centre front vertical height
642  [20] = AV_CHAN_TOP_BACK_LEFT, // left surround vertical height rear
643  [21] = AV_CHAN_TOP_BACK_RIGHT, // right surround vertical height rear
644  [22] = AV_CHAN_TOP_BACK_CENTER, // centre vertical height rear
645  [23] = AV_CHAN_TOP_SIDE_LEFT, // left vertical height side surround
646  [24] = AV_CHAN_TOP_SIDE_RIGHT, // right vertical height side surround
647  [25] = AV_CHAN_TOP_CENTER, // top centre surround
648  [26] = AV_CHAN_LOW_FREQUENCY_2, // low frequency enhancement 2
649  [27] = AV_CHAN_BOTTOM_FRONT_LEFT, // left front vertical bottom
650  [28] = AV_CHAN_BOTTOM_FRONT_RIGHT, // right front vertical bottom
651  [29] = AV_CHAN_BOTTOM_FRONT_CENTER, // centre front vertical bottom
652  [30] = AV_CHAN_TOP_SURROUND_LEFT, // left vertical height surround
653  [31] = AV_CHAN_TOP_SURROUND_RIGHT, // right vertical height surround
654 
655  [32] = AV_CHAN_NONE, // reserved
656  [33] = AV_CHAN_NONE, // reserved
657  [34] = AV_CHAN_NONE, // reserved
658  [35] = AV_CHAN_NONE, // reserved
659 
660  [36] = AV_CHAN_NONE, // low frequency enhancement 3
661  [37] = AV_CHAN_NONE, // left edge of screen
662  [38] = AV_CHAN_NONE, // right edge of screen
663  [39] = AV_CHAN_NONE, // half-way between centre of screen and left edge of screen
664  [40] = AV_CHAN_NONE, // half-way between centre of screen and right edge of screen
665  [41] = AV_CHAN_NONE, // left back surround
666  [42] = AV_CHAN_NONE, // right back surround
667 
668  // 43 - 125: reserved
669  // 126: explicit position
670  // 127: unknown /undefined
671 };
672 
673 int ff_mov_get_channel_config_from_layout(const AVChannelLayout *layout, int *config)
674 {
675  // Set default value which means any setup in 23001-8
676  *config = 0;
677  for (int i = 0; iso_ch_layout_map[i].tag & 0xffff; i += 1 + (iso_ch_layout_map[i].tag & 0xffff)) {
678  if (is_layout_valid_for_tag(layout, iso_ch_layout_map[i].tag, &iso_ch_layout_map[i])) {
679  *config = iso_ch_layout_map[i].tag >> 16;
680  break;
681  }
682  }
683 
684  return 0;
685 }
686 
687 int ff_mov_get_channel_layout_from_config(int config, AVChannelLayout *layout, uint64_t omitted_channel_map)
688 {
689  if (config > 0) {
690  uint32_t layout_tag;
691  int nb_omitted_channels = av_popcount64(omitted_channel_map);
692 
693  if (layout->nb_channels <= 0 || layout->nb_channels > UINT16_MAX - nb_omitted_channels)
694  return AVERROR_INVALIDDATA;
695 
696  layout_tag = (config << 16) | (layout->nb_channels + nb_omitted_channels);
697  return mov_get_channel_layout(layout, layout_tag, omitted_channel_map, iso_ch_layout_map);
698  }
699  return 1;
700 }
701 
702 int ff_mov_get_channel_positions_from_layout(const AVChannelLayout *layout,
703  uint8_t *position, int position_num)
704 {
705  enum AVChannel channel;
706 
707  if (position_num < layout->nb_channels)
708  return AVERROR(EINVAL);
709 
710  for (int i = 0; i < layout->nb_channels; i++) {
711  position[i] = 127;
712  channel = av_channel_layout_channel_from_index(layout, i);
713  if (channel == AV_CHAN_NONE)
714  return AVERROR(EINVAL);
715 
716  for (int j = 0; j < FF_ARRAY_ELEMS(iso_channel_position); j++) {
717  if (iso_channel_position[j] == channel) {
718  position[i] = j;
719  break;
720  }
721  }
722  if (position[i] == 127)
723  return AVERROR(EINVAL);
724  }
725 
726  return 0;
727 }
728 
729 int ff_mov_read_chnl(AVFormatContext *s, AVIOContext *pb, AVStream *st)
730 {
731  int stream_structure = avio_r8(pb);
732  int ret;
733 
734  // stream carries channels
735  if (stream_structure & 1) {
736  int layout = avio_r8(pb);
737 
738  av_log(s, AV_LOG_TRACE, "'chnl' layout %d\n", layout);
739  if (!layout) {
740  AVChannelLayout *ch_layout = &st->codecpar->ch_layout;
741  int nb_channels = ch_layout->nb_channels;
742 
743  av_channel_layout_uninit(ch_layout);
744  ret = av_channel_layout_custom_init(ch_layout, nb_channels);
745  if (ret < 0)
746  return ret;
747 
748  for (int i = 0; i < nb_channels; i++) {
749  int speaker_pos = avio_r8(pb);
750  enum AVChannel channel;
751 
752  if (speaker_pos == 126) // explicit position
753  avio_skip(pb, 3); // azimuth, elevation
754 
755  if (speaker_pos >= FF_ARRAY_ELEMS(iso_channel_position))
756  channel = AV_CHAN_NONE;
757  else
758  channel = iso_channel_position[speaker_pos];
759 
760  if (channel == AV_CHAN_NONE) {
761  av_log(s, AV_LOG_WARNING, "speaker position %d is not implemented\n", speaker_pos);
762  channel = AV_CHAN_UNKNOWN;
763  }
764 
765  ch_layout->u.map[i].id = channel;
766  }
767 
768  ret = av_channel_layout_retype(ch_layout, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
769  if (ret < 0)
770  return ret;
771  } else {
772  uint64_t omitted_channel_map = avio_rb64(pb);
773  ret = ff_mov_get_channel_layout_from_config(layout, &st->codecpar->ch_layout, omitted_channel_map);
774  if (ret < 0)
775  return ret;
776  }
777  }
778 
779  // stream carries objects
780  if (stream_structure & 2) {
781  int obj_count = avio_r8(pb);
782  av_log(s, AV_LOG_TRACE, "'chnl' with object_count %d\n", obj_count);
783  }
784 
785  return 0;
786 }
MOV_CH_LAYOUT_QUADRAPHONIC
@ MOV_CH_LAYOUT_QUADRAPHONIC
Definition: mov_chan.h:64
AV_CODEC_ID_PCM_S16LE
@ AV_CODEC_ID_PCM_S16LE
Definition: codec_id.h:336
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:216
AV_CODEC_ID_PCM_F32BE
@ AV_CODEC_ID_PCM_F32BE
Definition: codec_id.h:356
AV_CODEC_ID_AC3
@ AV_CODEC_ID_AC3
Definition: codec_id.h:452
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
MOV_CH_LAYOUT_MPEG_5_1_A
@ MOV_CH_LAYOUT_MPEG_5_1_A
Definition: mov_chan.h:77
c_LFE2
@ c_LFE2
Definition: mov_chan.c:60
ff_mov_get_channel_layout_from_config
int ff_mov_get_channel_layout_from_config(int config, AVChannelLayout *layout, uint64_t omitted_channel_map)
Get AVChannelLayout from ISO/IEC 23001-8 ChannelConfiguration.
Definition: mov_chan.c:687
out
FILE * out
Definition: movenc.c:55
codec_id
enum AVCodecID codec_id
Definition: mov_chan.c:334
iso_ch_layout_map
static const struct MovChannelLayoutMap iso_ch_layout_map[]
Definition: mov_chan.c:244
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:47
av_popcount64
#define av_popcount64
Definition: common.h:157
layouts
enum MovChannelLayoutTag * layouts
Definition: mov_chan.c:335
c_Rls
@ c_Rls
Definition: mov_chan.c:40
AV_CHAN_WIDE_LEFT
@ AV_CHAN_WIDE_LEFT
Definition: channel_layout.h:72
iso_Lc
@ iso_Lc
Definition: mov_chan.c:85
MOV_CH_LAYOUT_DTS_8_0_A
@ MOV_CH_LAYOUT_DTS_8_0_A
Definition: mov_chan.h:134
int64_t
long long int64_t
Definition: coverity.c:34
AVChannelLayout::map
AVChannelCustom * map
This member must be used when the channel order is AV_CHANNEL_ORDER_CUSTOM.
Definition: channel_layout.h:370
AV_CHAN_TOP_SURROUND_LEFT
@ AV_CHAN_TOP_SURROUND_LEFT
+110 degrees, Lvs, TpLS
Definition: channel_layout.h:84
MOV_CH_LAYOUT_AC3_3_0_1
@ MOV_CH_LAYOUT_AC3_3_0_1
Definition: mov_chan.h:107
av_channel_layout_channel_from_index
enum AVChannel av_channel_layout_channel_from_index(const AVChannelLayout *channel_layout, unsigned int idx)
Get the channel with the given index in a channel layout.
Definition: channel_layout.c:673
iso_Lss
@ iso_Lss
Definition: mov_chan.c:109
iso_Lsr
@ iso_Lsr
Definition: mov_chan.c:83
R
#define R
Definition: huffyuv.h:44
AV_CODEC_ID_ALAC
@ AV_CODEC_ID_ALAC
Definition: codec_id.h:465
mov_ch_layout_map
static const struct MovChannelLayoutMap mov_ch_layout_map[]
Definition: mov_chan.c:233
FF_COMPLIANCE_STRICT
#define FF_COMPLIANCE_STRICT
Strictly conform to all the things in the spec no matter what consequences.
Definition: defs.h:59
CHLIST01
#define CHLIST01(_tag, _1)
Definition: mov_chan.c:125
MOV_CH_LAYOUT_ITU_2_1
@ MOV_CH_LAYOUT_ITU_2_1
Definition: mov_chan.h:87
AVChannelLayout::order
enum AVChannelOrder order
Channel order used in this layout.
Definition: channel_layout.h:324
MOV_CH_LAYOUT_AAC_7_0
@ MOV_CH_LAYOUT_AAC_7_0
Definition: mov_chan.h:100
AVChannelLayout::mask
uint64_t mask
This member must be used for AV_CHANNEL_ORDER_NATIVE, and may be used for AV_CHANNEL_ORDER_AMBISONIC ...
Definition: channel_layout.h:351
av_popcount
#define av_popcount
Definition: common.h:154
CHLIST24
#define CHLIST24(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24)
Definition: mov_chan.c:140
ff_mov_get_channel_layout_tag
int ff_mov_get_channel_layout_tag(const AVCodecParameters *par, uint32_t *layout, uint32_t *bitmap, uint32_t **pchannel_desc)
Get the channel layout tag for the specified codec id and channel layout.
Definition: mov_chan.c:463
AVChannelLayout::nb_channels
int nb_channels
Number of channels in this layout.
Definition: channel_layout.h:329
c_R
@ c_R
Definition: mov_chan.c:37
tf_sess_config.config
config
Definition: tf_sess_config.py:33
iso_Lvr
@ iso_Lvr
Definition: mov_chan.c:94
MOV_CH_LAYOUT_AC3_3_0
@ MOV_CH_LAYOUT_AC3_3_0
Definition: mov_chan.h:105
c_Ls
@ c_Ls
Definition: mov_chan.c:45
MOV_CH_LAYOUT_DTS_6_0_A
@ MOV_CH_LAYOUT_DTS_6_0_A
Definition: mov_chan.h:125
mov_get_channel_layout
static int mov_get_channel_layout(AVChannelLayout *ch_layout, uint32_t tag, uint64_t omitted_channel_map, const struct MovChannelLayoutMap *map)
Get the channel layout for the specified non-special channel layout tag if known.
Definition: mov_chan.c:371
MOV_CH_LAYOUT_MATRIXSTEREO
@ MOV_CH_LAYOUT_MATRIXSTEREO
Definition: mov_chan.h:59
AV_CHAN_SURROUND_DIRECT_LEFT
@ AV_CHAN_SURROUND_DIRECT_LEFT
Definition: channel_layout.h:74
c_Vhc
@ c_Vhc
Definition: mov_chan.c:49
MOV_CH_LAYOUT_MPEG_5_0_A
@ MOV_CH_LAYOUT_MPEG_5_0_A
Definition: mov_chan.h:73
c_Z
@ c_Z
Definition: mov_chan.c:68
AV_CODEC_ID_PCM_S16BE
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:337
AV_CHAN_TOP_BACK_RIGHT
@ AV_CHAN_TOP_BACK_RIGHT
Definition: channel_layout.h:67
iso_Rb
@ iso_Rb
Definition: mov_chan.c:108
c_Rrs
@ c_Rrs
Definition: mov_chan.c:41
iso_Lsd
@ iso_Lsd
Definition: mov_chan.c:101
iso_Rss
@ iso_Rss
Definition: mov_chan.c:110
MOV_CH_LAYOUT_MPEG_5_1_D
@ MOV_CH_LAYOUT_MPEG_5_1_D
Definition: mov_chan.h:80
mov_ch_layouts_alac
static enum MovChannelLayoutTag mov_ch_layouts_alac[]
Definition: mov_chan.c:306
iso_R
@ iso_R
Definition: mov_chan.c:80
MOV_CH_LAYOUT_MONO
@ MOV_CH_LAYOUT_MONO
Definition: mov_chan.h:56
c_Rt
@ c_Rt
Definition: mov_chan.c:55
AV_CHAN_STEREO_RIGHT
@ AV_CHAN_STEREO_RIGHT
See above.
Definition: channel_layout.h:71
MOV_CH_LAYOUT_ITU_2_2
@ MOV_CH_LAYOUT_ITU_2_2
Definition: mov_chan.h:88
C
s EdgeDetect Foobar g libavfilter vf_edgedetect c libavfilter vf_foobar c edit libavfilter and add an entry for foobar following the pattern of the other filters edit libavfilter allfilters and add an entry for foobar following the pattern of the other filters configure make j< whatever > ffmpeg ffmpeg i you should get a foobar png with Lena edge detected That s your new playground is ready Some little details about what s going which in turn will define variables for the build system and the C
Definition: writing_filters.txt:58
AV_CODEC_ID_PCM_S8
@ AV_CODEC_ID_PCM_S8
Definition: codec_id.h:340
avassert.h
AV_CHAN_BOTTOM_FRONT_LEFT
@ AV_CHAN_BOTTOM_FRONT_LEFT
Definition: channel_layout.h:80
avio_rb32
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:761
AV_LOG_TRACE
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:236
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:210
iso_Lvs
@ iso_Lvs
Definition: mov_chan.c:112
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
MOV_CH_LAYOUT_AC3_1_0_1
@ MOV_CH_LAYOUT_AC3_1_0_1
Definition: mov_chan.h:104
codec_id.h
MOV_CH_LAYOUT_MPEG_5_1_C
@ MOV_CH_LAYOUT_MPEG_5_1_C
Definition: mov_chan.h:79
MOV_CH_LAYOUT_AAC_6_0
@ MOV_CH_LAYOUT_AAC_6_0
Definition: mov_chan.h:98
s
#define s(width, name)
Definition: cbs_vp9.c:198
find_layout_map
static const struct MovChannelLayoutMap * find_layout_map(uint32_t tag, const struct MovChannelLayoutMap *map)
Definition: mov_chan.c:355
iso_Lw
@ iso_Lw
Definition: mov_chan.c:99
iso_Ts
@ iso_Ts
Definition: mov_chan.c:90
AV_CHAN_UNKNOWN
@ AV_CHAN_UNKNOWN
Channel contains data, but its position is unknown.
Definition: channel_layout.h:94
iso_Lvss
@ iso_Lvss
Definition: mov_chan.c:104
AV_CHANNEL_ORDER_UNSPEC
@ AV_CHANNEL_ORDER_UNSPEC
Only the channel count is specified, without any further information about the channel order.
Definition: channel_layout.h:119
av_channel_layout_from_mask
int av_channel_layout_from_mask(AVChannelLayout *channel_layout, uint64_t mask)
Initialize a native channel layout from a bitmask indicating which channels are present.
Definition: channel_layout.c:252
c_Csd
@ c_Csd
Definition: mov_chan.c:72
AV_CHAN_SIDE_RIGHT
@ AV_CHAN_SIDE_RIGHT
Definition: channel_layout.h:60
iso_Cv
@ iso_Cv
Definition: mov_chan.c:92
MOV_CH_LAYOUT_AC3_3_1
@ MOV_CH_LAYOUT_AC3_3_1
Definition: mov_chan.h:106
CHLIST08
#define CHLIST08(_tag, _1, _2, _3, _4, _5, _6, _7, _8)
Definition: mov_chan.c:132
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:231
iso_Rvs
@ iso_Rvs
Definition: mov_chan.c:113
channels
channels
Definition: aptx.h:31
iso_Cvr
@ iso_Cvr
Definition: mov_chan.c:95
c_X
@ c_X
Definition: mov_chan.c:69
MOV_CH_LAYOUT_MPEG_7_1_B
@ MOV_CH_LAYOUT_MPEG_7_1_B
Definition: mov_chan.h:83
CHLIST04
#define CHLIST04(_tag, _1, _2, _3, _4)
Definition: mov_chan.c:128
AV_CHAN_TOP_SIDE_LEFT
@ AV_CHAN_TOP_SIDE_LEFT
Definition: channel_layout.h:77
AV_CHAN_TOP_SIDE_RIGHT
@ AV_CHAN_TOP_SIDE_RIGHT
Definition: channel_layout.h:78
AVChannelLayout::u
union AVChannelLayout::@461 u
Details about which channels are present in this layout.
AVFormatContext
Format I/O context.
Definition: avformat.h:1265
AV_CHAN_SIDE_SURROUND_LEFT
@ AV_CHAN_SIDE_SURROUND_LEFT
+90 degrees, Lss, SiL
Definition: channel_layout.h:82
MOV_CH_LAYOUT_SMPTE_DTV
@ MOV_CH_LAYOUT_SMPTE_DTV
Definition: mov_chan.h:86
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:768
MovChannelLayoutTag
MovChannelLayoutTag
mov 'chan' tag reading/writing.
Definition: mov_chan.h:51
MOV_CH_LAYOUT_STEREO
@ MOV_CH_LAYOUT_STEREO
Definition: mov_chan.h:57
NULL
#define NULL
Definition: coverity.c:32
MOV_CH_LAYOUT_DTS_4_1
@ MOV_CH_LAYOUT_DTS_4_1
Definition: mov_chan.h:124
MOV_CH_LAYOUT_MAP
#define MOV_CH_LAYOUT_MAP
Definition: mov_chan.c:145
iso_Rsr
@ iso_Rsr
Definition: mov_chan.c:84
c_Vhr
@ c_Vhr
Definition: mov_chan.c:50
AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL
#define AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL
The specified retype target order is ignored and the simplest possible (canonical) order is used for ...
Definition: channel_layout.h:721
AV_CHAN_TOP_BACK_CENTER
@ AV_CHAN_TOP_BACK_CENTER
Definition: channel_layout.h:66
avio_rb64
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:908
iso_Rsd
@ iso_Rsd
Definition: mov_chan.c:102
CHLIST05
#define CHLIST05(_tag, _1, _2, _3, _4, _5)
Definition: mov_chan.c:129
iso_Rv
@ iso_Rv
Definition: mov_chan.c:93
c_Rlt
@ c_Rlt
Definition: mov_chan.c:51
c_Haptic
@ c_Haptic
Definition: mov_chan.c:75
mov_get_channel_id
static enum AVChannel mov_get_channel_id(uint32_t label)
Definition: mov_chan.c:403
AV_CHAN_BOTTOM_FRONT_RIGHT
@ AV_CHAN_BOTTOM_FRONT_RIGHT
Definition: channel_layout.h:81
MOV_CH_LAYOUT_MPEG_3_0_B
@ MOV_CH_LAYOUT_MPEG_3_0_B
Definition: mov_chan.h:70
ff_mov_get_channel_positions_from_layout
int ff_mov_get_channel_positions_from_layout(const AVChannelLayout *layout, uint8_t *position, int position_num)
Get ISO/IEC 23001-8 OutputChannelPosition from AVChannelLayout.
Definition: mov_chan.c:702
AV_CHAN_TOP_CENTER
@ AV_CHAN_TOP_CENTER
Definition: channel_layout.h:61
AVCodecParameters::ch_layout
AVChannelLayout ch_layout
Audio only.
Definition: codec_par.h:180
MovChannelLayoutMap
Definition: mov_chan.c:116
AV_CHAN_FRONT_RIGHT_OF_CENTER
@ AV_CHAN_FRONT_RIGHT_OF_CENTER
Definition: channel_layout.h:57
AVCodecID
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:49
AV_CHAN_FRONT_RIGHT
@ AV_CHAN_FRONT_RIGHT
Definition: channel_layout.h:51
AV_CHAN_FRONT_CENTER
@ AV_CHAN_FRONT_CENTER
Definition: channel_layout.h:52
AV_CODEC_ID_AAC
@ AV_CODEC_ID_AAC
Definition: codec_id.h:451
ff_mov_get_channel_config_from_layout
int ff_mov_get_channel_config_from_layout(const AVChannelLayout *layout, int *config)
Get ISO/IEC 23001-8 ChannelConfiguration from AVChannelLayout.
Definition: mov_chan.c:673
iso_Ls
@ iso_Ls
Definition: mov_chan.c:88
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:730
c_Rsd
@ c_Rsd
Definition: mov_chan.c:59
AVIOContext
Bytestream IO Context.
Definition: avio.h:160
AV_CODEC_ID_PCM_S24LE
@ AV_CODEC_ID_PCM_S24LE
Definition: codec_id.h:348
MOV_CH_LAYOUT_AAC_6_1
@ MOV_CH_LAYOUT_AAC_6_1
Definition: mov_chan.h:99
AVChannelLayout
An AVChannelLayout holds information about the channel layout of audio data.
Definition: channel_layout.h:319
CHLIST07
#define CHLIST07(_tag, _1, _2, _3, _4, _5, _6, _7)
Definition: mov_chan.c:131
iso_Cs
@ iso_Cs
Definition: mov_chan.c:87
AV_CHAN_LOW_FREQUENCY
@ AV_CHAN_LOW_FREQUENCY
Definition: channel_layout.h:53
size
int size
Definition: twinvq_data.h:10344
AV_CHAN_BACK_RIGHT
@ AV_CHAN_BACK_RIGHT
Definition: channel_layout.h:55
AV_CHAN_SIDE_LEFT
@ AV_CHAN_SIDE_LEFT
Definition: channel_layout.h:59
MOV_CH_LAYOUT_MPEG_7_1_A
@ MOV_CH_LAYOUT_MPEG_7_1_A
Definition: mov_chan.h:82
iso_LFE2
@ iso_LFE2
Definition: mov_chan.c:103
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:603
av_channel_layout_retype
int av_channel_layout_retype(AVChannelLayout *channel_layout, enum AVChannelOrder order, int flags)
Change the AVChannelOrder of a channel layout.
Definition: channel_layout.c:885
MOV_CH_LAYOUT_DTS_6_1_A
@ MOV_CH_LAYOUT_DTS_6_1_A
Definition: mov_chan.h:128
MOV_CH_LAYOUT_MPEG_3_0_A
@ MOV_CH_LAYOUT_MPEG_3_0_A
Definition: mov_chan.h:69
AV_CHAN_TOP_FRONT_RIGHT
@ AV_CHAN_TOP_FRONT_RIGHT
Definition: channel_layout.h:64
AV_CHANNEL_ORDER_NATIVE
@ AV_CHANNEL_ORDER_NATIVE
The native channel order, i.e.
Definition: channel_layout.h:125
AV_CHAN_FRONT_LEFT_OF_CENTER
@ AV_CHAN_FRONT_LEFT_OF_CENTER
Definition: channel_layout.h:56
MOV_CH_LAYOUT_DVD_18
@ MOV_CH_LAYOUT_DVD_18
Definition: mov_chan.h:94
AV_CHAN_UNUSED
@ AV_CHAN_UNUSED
Channel is empty can be safely skipped.
Definition: channel_layout.h:91
c_Lc
@ c_Lc
Definition: mov_chan.c:42
mov_codec_ch_layouts
static const struct @435 mov_codec_ch_layouts[]
av_channel_layout_custom_init
int av_channel_layout_custom_init(AVChannelLayout *channel_layout, int nb_channels)
Initialize a custom channel layout with the specified number of channels.
Definition: channel_layout.c:232
c_L
@ c_L
Definition: mov_chan.c:36
layout
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel layout
Definition: filter_design.txt:18
c_Cs
@ c_Cs
Definition: mov_chan.c:44
AVChannel
AVChannel
Definition: channel_layout.h:47
MOV_CH_LAYOUT_MPEG_5_0_D
@ MOV_CH_LAYOUT_MPEG_5_0_D
Definition: mov_chan.h:76
AV_CHAN_TOP_SURROUND_RIGHT
@ AV_CHAN_TOP_SURROUND_RIGHT
-110 degrees, Rvs, TpRS
Definition: channel_layout.h:85
AV_CHAN_SURROUND_DIRECT_RIGHT
@ AV_CHAN_SURROUND_DIRECT_RIGHT
Definition: channel_layout.h:75
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:50
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
iso_Cb
@ iso_Cb
Definition: mov_chan.c:106
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:32
CHLIST03
#define CHLIST03(_tag, _1, _2, _3)
Definition: mov_chan.c:127
iso_Rc
@ iso_Rc
Definition: mov_chan.c:86
AV_CODEC_ID_PCM_F64BE
@ AV_CODEC_ID_PCM_F64BE
Definition: codec_id.h:358
iso_Rs
@ iso_Rs
Definition: mov_chan.c:89
MOV_CH_LAYOUT_MPEG_6_1_A
@ MOV_CH_LAYOUT_MPEG_6_1_A
Definition: mov_chan.h:81
c_Ts
@ c_Ts
Definition: mov_chan.c:47
AV_CODEC_ID_PCM_S32BE
@ AV_CODEC_ID_PCM_S32BE
Definition: codec_id.h:345
CHLIST06
#define CHLIST06(_tag, _1, _2, _3, _4, _5, _6)
Definition: mov_chan.c:130
c_LFE1
@ c_LFE1
Definition: mov_chan.c:71
MOV_CH_LAYOUT_AC3_2_1_1
@ MOV_CH_LAYOUT_AC3_2_1_1
Definition: mov_chan.h:108
iso_Rvss
@ iso_Rvss
Definition: mov_chan.c:105
AV_CHAN_STEREO_LEFT
@ AV_CHAN_STEREO_LEFT
Stereo downmix.
Definition: channel_layout.h:69
MOV_CH_LAYOUT_MPEG_4_0_B
@ MOV_CH_LAYOUT_MPEG_4_0_B
Definition: mov_chan.h:72
c_Rw
@ c_Rw
Definition: mov_chan.c:57
MovChannelLayoutMap::tag
uint32_t tag
Definition: mov_chan.c:118
MOV_CH_LAYOUT_MPEG_5_0_C
@ MOV_CH_LAYOUT_MPEG_5_0_C
Definition: mov_chan.h:75
iso_Rw
@ iso_Rw
Definition: mov_chan.c:100
mov_chan.h
tag
uint32_t tag
Definition: movenc.c:1911
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:745
c_Rrt
@ c_Rrt
Definition: mov_chan.c:53
MOV_CH_LAYOUT_DVD_4
@ MOV_CH_LAYOUT_DVD_4
Definition: mov_chan.h:89
c_Vhl
@ c_Vhl
Definition: mov_chan.c:48
c_LFE
@ c_LFE
Definition: mov_chan.c:39
c_Lt
@ c_Lt
Definition: mov_chan.c:54
id
enum AVCodecID id
Definition: dts2pts.c:367
AV_CHAN_BACK_CENTER
@ AV_CHAN_BACK_CENTER
Definition: channel_layout.h:58
c_Lw
@ c_Lw
Definition: mov_chan.c:56
AV_CHAN_NONE
@ AV_CHAN_NONE
Invalid channel index.
Definition: channel_layout.h:49
channel_layout.h
AV_CHAN_LOW_FREQUENCY_2
@ AV_CHAN_LOW_FREQUENCY_2
Definition: channel_layout.h:76
AV_CHAN_TOP_BACK_LEFT
@ AV_CHAN_TOP_BACK_LEFT
Definition: channel_layout.h:65
c_Rc
@ c_Rc
Definition: mov_chan.c:43
iso_C
@ iso_C
Definition: mov_chan.c:81
av_channel_layout_uninit
void av_channel_layout_uninit(AVChannelLayout *channel_layout)
Free any allocated data in the channel layout and reset the channel count to 0.
Definition: channel_layout.c:442
iso_L
@ iso_L
Definition: mov_chan.c:79
AV_CHAN_BACK_LEFT
@ AV_CHAN_BACK_LEFT
Definition: channel_layout.h:54
L
#define L(x)
Definition: vpx_arith.h:36
AVIOContext::eof_reached
int eof_reached
true if was unable to read due to error or eof
Definition: avio.h:238
iso_Lv
@ iso_Lv
Definition: mov_chan.c:91
c_C
@ c_C
Definition: mov_chan.c:38
MOV_CH_LAYOUT_MPEG_7_1_C
@ MOV_CH_LAYOUT_MPEG_7_1_C
Definition: mov_chan.h:84
AV_CHAN_BOTTOM_FRONT_CENTER
@ AV_CHAN_BOTTOM_FRONT_CENTER
Definition: channel_layout.h:79
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:318
MovChannelLayoutMap::id
enum AVChannel id
Definition: mov_chan.c:119
c_W
@ c_W
Definition: mov_chan.c:66
is_layout_valid_for_tag
static int is_layout_valid_for_tag(const AVChannelLayout *ch_layout, uint32_t tag, const struct MovChannelLayoutMap *map)
Definition: mov_chan.c:441
mov_ch_layouts_aac
static enum MovChannelLayoutTag mov_ch_layouts_aac[]
Definition: mov_chan.c:261
MOV_CH_LAYOUT_AAC_OCTAGONAL
@ MOV_CH_LAYOUT_AAC_OCTAGONAL
Definition: mov_chan.h:101
c_Rs
@ c_Rs
Definition: mov_chan.c:46
iso_channel_position
static enum AVChannel iso_channel_position[]
Definition: mov_chan.c:621
AV_CHAN_TOP_FRONT_CENTER
@ AV_CHAN_TOP_FRONT_CENTER
Definition: channel_layout.h:63
AV_CODEC_ID_PCM_S32LE
@ AV_CODEC_ID_PCM_S32LE
Definition: codec_id.h:344
MOV_CH_LAYOUT_DTS_3_1
@ MOV_CH_LAYOUT_DTS_3_1
Definition: mov_chan.h:123
mov_get_channel_label
static uint32_t mov_get_channel_label(enum AVChannel channel)
Definition: mov_chan.c:422
AV_CHAN_SIDE_SURROUND_RIGHT
@ AV_CHAN_SIDE_SURROUND_RIGHT
-90 degrees, Rss, SiR
Definition: channel_layout.h:83
mem.h
AV_CHAN_WIDE_RIGHT
@ AV_CHAN_WIDE_RIGHT
Definition: channel_layout.h:73
AV_CODEC_ID_PCM_U8
@ AV_CODEC_ID_PCM_U8
Definition: codec_id.h:341
CHLIST02
#define CHLIST02(_tag, _1, _2)
Definition: mov_chan.c:126
c_HI
@ c_HI
Definition: mov_chan.c:73
map
const VDPAUPixFmtMap * map
Definition: hwcontext_vdpau.c:71
iso_Rvr
@ iso_Rvr
Definition: mov_chan.c:96
MOV_CH_LAYOUT_AC3_3_1_1
@ MOV_CH_LAYOUT_AC3_3_1_1
Definition: mov_chan.h:109
AV_CODEC_ID_PCM_F64LE
@ AV_CODEC_ID_PCM_F64LE
Definition: codec_id.h:359
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
iso_Lb
@ iso_Lb
Definition: mov_chan.c:107
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:55
AV_CHAN_TOP_FRONT_LEFT
@ AV_CHAN_TOP_FRONT_LEFT
Definition: channel_layout.h:62
AV_CHAN_AMBISONIC_BASE
@ AV_CHAN_AMBISONIC_BASE
Range of channels between AV_CHAN_AMBISONIC_BASE and AV_CHAN_AMBISONIC_END represent Ambisonic compon...
Definition: channel_layout.h:108
ff_mov_read_chnl
int ff_mov_read_chnl(AVFormatContext *s, AVIOContext *pb, AVStream *st)
Read 'chnl' tag from the input stream.
Definition: mov_chan.c:729
iso_LFE
@ iso_LFE
Definition: mov_chan.c:82
AV_CODEC_ID_PCM_F32LE
@ AV_CODEC_ID_PCM_F32LE
Definition: codec_id.h:357
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
AV_CHAN_FRONT_LEFT
@ AV_CHAN_FRONT_LEFT
Definition: channel_layout.h:50
mov_ch_layouts_wav
static enum MovChannelLayoutTag mov_ch_layouts_wav[]
Definition: mov_chan.c:318
AV_CODEC_ID_PCM_S24BE
@ AV_CODEC_ID_PCM_S24BE
Definition: codec_id.h:349
mov_ch_layouts_ac3
static enum MovChannelLayoutTag mov_ch_layouts_ac3[]
Definition: mov_chan.c:288
AVChannelCustom::id
enum AVChannel id
Definition: channel_layout.h:284
c_Y
@ c_Y
Definition: mov_chan.c:67
channel
channel
Definition: ebur128.h:39
c_VI
@ c_VI
Definition: mov_chan.c:74
MOV_CH_LAYOUT_USE_BITMAP
@ MOV_CH_LAYOUT_USE_BITMAP
Definition: mov_chan.h:54
MOV_CH_LAYOUT_USE_DESCRIPTIONS
@ MOV_CH_LAYOUT_USE_DESCRIPTIONS
Definition: mov_chan.h:53
ff_mov_read_chan
int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st, int64_t size)
Read 'chan' tag from the input stream.
Definition: mov_chan.c:524
c_Lsd
@ c_Lsd
Definition: mov_chan.c:58
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