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  AVChannelLayout tmp = { 0 };
379  int ret;
380  int map_layout_nb_channels = tag & 0xFFFF;
381  int nb_channels = ch_layout->nb_channels;
382 
383  /* Omitted channel bits must not exceed number of channels in map */
384  if (omitted_channel_map >> map_layout_nb_channels)
385  return AVERROR_INVALIDDATA;
386 
387  ret = av_channel_layout_custom_init(&tmp, 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  tmp.u.map[idx++].id = (id != AV_CHAN_NONE ? id : AV_CHAN_UNKNOWN);
395  }
396  }
397 
398  ret = av_channel_layout_retype(&tmp, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
399  if (ret < 0)
400  return ret;
401 
402  av_channel_layout_uninit(ch_layout);
403  *ch_layout = tmp;
404  }
405  return 0;
406 }
407 
408 static enum AVChannel mov_get_channel_id(uint32_t label)
409 {
410  if (label == 0)
411  return AV_CHAN_UNUSED;
412  if (label <= 18)
413  return (label - 1);
414  if (label == 35)
415  return AV_CHAN_WIDE_LEFT;
416  if (label == 36)
417  return AV_CHAN_WIDE_RIGHT;
418  if (label == 37)
419  return AV_CHAN_LOW_FREQUENCY_2;
420  if (label == 38)
421  return AV_CHAN_STEREO_LEFT;
422  if (label == 39)
423  return AV_CHAN_STEREO_RIGHT;
424  return AV_CHAN_UNKNOWN;
425 }
426 
427 static uint32_t mov_get_channel_label(enum AVChannel channel)
428 {
429  if (channel < 0)
430  return 0;
431  if (channel <= AV_CHAN_TOP_BACK_RIGHT)
432  return channel + 1;
433  if (channel == AV_CHAN_WIDE_LEFT)
434  return 35;
435  if (channel == AV_CHAN_WIDE_RIGHT)
436  return 36;
437  if (channel == AV_CHAN_LOW_FREQUENCY_2)
438  return 37;
439  if (channel == AV_CHAN_STEREO_LEFT)
440  return 38;
441  if (channel == AV_CHAN_STEREO_RIGHT)
442  return 39;
443  return 0;
444 }
445 
446 static int is_layout_valid_for_tag(const AVChannelLayout *ch_layout, uint32_t tag, const struct MovChannelLayoutMap *map)
447 {
448  const struct MovChannelLayoutMap *layout_map;
449  int channels = ch_layout->nb_channels;
450 
451  /* get the layout map based on the channel count */
452  if ((tag & 0xFFFF) != channels)
453  return 0;
454 
455  layout_map = find_layout_map(tag, map);
456  if (layout_map) {
457  int i;
458  for (i = 0; i < channels; i++) {
459  if (av_channel_layout_channel_from_index(ch_layout, i) != layout_map[i].id)
460  break;
461  }
462  if (i == channels)
463  return 1;
464  }
465  return 0;
466 }
467 
468 int ff_mov_get_channel_layout_tag(const AVCodecParameters *par,
469  uint32_t *layout,
470  uint32_t *bitmap,
471  uint32_t **pchannel_desc)
472 {
473  int i;
474  uint32_t tag = 0;
475  const enum MovChannelLayoutTag *layouts = NULL;
476 
477  /* find the layout list for the specified codec */
478  for (i = 0; mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE; i++) {
479  if (mov_codec_ch_layouts[i].codec_id == par->codec_id)
480  break;
481  }
482  if (mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE)
483  layouts = mov_codec_ch_layouts[i].layouts;
484 
485  if (layouts) {
486  /* find the layout tag for the specified channel layout */
487  for (i = 0; layouts[i] != 0; i++)
488  if (is_layout_valid_for_tag(&par->ch_layout, layouts[i], mov_ch_layout_map))
489  break;
490 
491  tag = layouts[i];
492  }
493 
494  *layout = tag;
495  *bitmap = 0;
496  *pchannel_desc = NULL;
497 
498  /* if no tag was found, use channel bitmap or description as a backup if possible */
499  if (tag == 0) {
500  uint32_t *channel_desc;
501  if (par->ch_layout.order == AV_CHANNEL_ORDER_NATIVE &&
502  par->ch_layout.u.mask < 0x40000) {
503  *layout = MOV_CH_LAYOUT_USE_BITMAP;
504  *bitmap = (uint32_t)par->ch_layout.u.mask;
505  return 0;
506  } else if (par->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC)
507  return AVERROR(ENOSYS);
508 
509  channel_desc = av_malloc_array(par->ch_layout.nb_channels, sizeof(*channel_desc));
510  if (!channel_desc)
511  return AVERROR(ENOMEM);
512 
513  for (i = 0; i < par->ch_layout.nb_channels; i++) {
514  channel_desc[i] =
515  mov_get_channel_label(av_channel_layout_channel_from_index(&par->ch_layout, i));
516 
517  if (channel_desc[i] == 0) {
518  av_free(channel_desc);
519  return AVERROR(ENOSYS);
520  }
521  }
522 
523  *pchannel_desc = channel_desc;
524  }
525 
526  return 0;
527 }
528 
529 int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
530  int64_t size)
531 {
532  uint32_t layout_tag, bitmap, num_descr;
533  int ret;
534  AVChannelLayout *ch_layout = &st->codecpar->ch_layout;
535 
536  if (size < 12)
537  return AVERROR_INVALIDDATA;
538 
539  layout_tag = avio_rb32(pb);
540  bitmap = avio_rb32(pb);
541  num_descr = avio_rb32(pb);
542 
543  av_log(s, AV_LOG_DEBUG, "chan: layout=%"PRIu32" "
544  "bitmap=%"PRIu32" num_descr=%"PRIu32"\n",
545  layout_tag, bitmap, num_descr);
546 
547  if (size < 12ULL + num_descr * 20ULL)
548  return 0;
549 
550  if (layout_tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS) {
551  AVChannelLayout tmp = { 0 };
552  int nb_channels = ch_layout->nb_channels;
553 
554  if (!num_descr || num_descr < nb_channels) {
555  av_log(s, AV_LOG_ERROR, "got %"PRIu32" channel descriptions when at least %d were needed\n",
556  num_descr, nb_channels);
557  return AVERROR_INVALIDDATA;
558  }
559 
560  if (num_descr > nb_channels) {
561  int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT;
562  av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
563  "got %"PRIu32" channel descriptions when number of channels is %d\n",
564  num_descr, nb_channels);
565  if (strict)
566  return AVERROR_INVALIDDATA;
567  av_log(s, AV_LOG_WARNING, "capping channel descriptions to the number of channels\n");
568  num_descr = nb_channels;
569  }
570 
571  ret = av_channel_layout_custom_init(&tmp, nb_channels);
572  if (ret < 0)
573  goto out;
574 
575  for (int i = 0; i < num_descr; i++) {
576  uint32_t label;
577  if (pb->eof_reached) {
578  av_log(s, AV_LOG_ERROR,
579  "reached EOF while reading channel layout\n");
580  return AVERROR_INVALIDDATA;
581  }
582  label = avio_rb32(pb); // mChannelLabel
583  avio_rb32(pb); // mChannelFlags
584  avio_rl32(pb); // mCoordinates[0]
585  avio_rl32(pb); // mCoordinates[1]
586  avio_rl32(pb); // mCoordinates[2]
587  size -= 20;
588  tmp.u.map[i].id = mov_get_channel_id(label);
589  }
590 
591  ret = av_channel_layout_retype(&tmp, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
592  if (ret < 0)
593  goto out;
594 
595  av_channel_layout_uninit(ch_layout);
596  *ch_layout = tmp;
597  } else if (layout_tag == MOV_CH_LAYOUT_USE_BITMAP) {
598  if (!ch_layout->nb_channels || av_popcount(bitmap) == ch_layout->nb_channels) {
599  if (bitmap < 0x40000) {
600  av_channel_layout_uninit(ch_layout);
601  av_channel_layout_from_mask(ch_layout, bitmap);
602  }
603  } else {
604  av_log(s, AV_LOG_WARNING, "ignoring channel layout bitmap with %d channels because number of channels is %d\n",
605  av_popcount64(bitmap), ch_layout->nb_channels);
606  }
607  } else if (layout_tag & 0xFFFF) {
608  int nb_channels = layout_tag & 0xFFFF;
609  if (!ch_layout->nb_channels)
610  ch_layout->nb_channels = nb_channels;
611  if (nb_channels == ch_layout->nb_channels) {
612  ret = mov_get_channel_layout(ch_layout, layout_tag, 0, mov_ch_layout_map);
613  if (ret < 0)
614  return ret;
615  } else {
616  av_log(s, AV_LOG_WARNING, "ignoring layout tag with %d channels because number of channels is %d\n",
617  nb_channels, ch_layout->nb_channels);
618  }
619  }
620  ret = 0;
621 
622 out:
623  avio_skip(pb, size - 12);
624 
625  return ret;
626 }
627 
628 /* ISO/IEC 23001-8, table 8 */
629 static const enum AVChannel iso_channel_position[] = {
630  [0] = AV_CHAN_FRONT_LEFT, // left front
631  [1] = AV_CHAN_FRONT_RIGHT, // right front
632  [2] = AV_CHAN_FRONT_CENTER, // centre front
633  [3] = AV_CHAN_LOW_FREQUENCY, // low frequency enhancement
634  [4] = AV_CHAN_SIDE_LEFT, // left surround
635  [5] = AV_CHAN_SIDE_RIGHT, // right surround
636  [6] = AV_CHAN_FRONT_LEFT_OF_CENTER, // left front centre
637  [7] = AV_CHAN_FRONT_RIGHT_OF_CENTER, // right front centre
638  [8] = AV_CHAN_BACK_LEFT, // rear surround left
639  [9] = AV_CHAN_BACK_RIGHT, // rear surround right
640  [10] = AV_CHAN_BACK_CENTER, // rear centre
641  [11] = AV_CHAN_SURROUND_DIRECT_LEFT, // left surround direct
642  [12] = AV_CHAN_SURROUND_DIRECT_RIGHT, // right surround direct
643  [13] = AV_CHAN_SIDE_SURROUND_LEFT, // left side surround
644  [14] = AV_CHAN_SIDE_SURROUND_RIGHT, // right side surround
645  [15] = AV_CHAN_WIDE_LEFT, // left wide front
646  [16] = AV_CHAN_WIDE_RIGHT, // right wide front
647  [17] = AV_CHAN_TOP_FRONT_LEFT, // left front vertical height
648  [18] = AV_CHAN_TOP_FRONT_RIGHT, // right front vertical height
649  [19] = AV_CHAN_TOP_FRONT_CENTER, // centre front vertical height
650  [20] = AV_CHAN_TOP_BACK_LEFT, // left surround vertical height rear
651  [21] = AV_CHAN_TOP_BACK_RIGHT, // right surround vertical height rear
652  [22] = AV_CHAN_TOP_BACK_CENTER, // centre vertical height rear
653  [23] = AV_CHAN_TOP_SIDE_LEFT, // left vertical height side surround
654  [24] = AV_CHAN_TOP_SIDE_RIGHT, // right vertical height side surround
655  [25] = AV_CHAN_TOP_CENTER, // top centre surround
656  [26] = AV_CHAN_LOW_FREQUENCY_2, // low frequency enhancement 2
657  [27] = AV_CHAN_BOTTOM_FRONT_LEFT, // left front vertical bottom
658  [28] = AV_CHAN_BOTTOM_FRONT_RIGHT, // right front vertical bottom
659  [29] = AV_CHAN_BOTTOM_FRONT_CENTER, // centre front vertical bottom
660  [30] = AV_CHAN_TOP_SURROUND_LEFT, // left vertical height surround
661  [31] = AV_CHAN_TOP_SURROUND_RIGHT, // right vertical height surround
662 
663  [32] = AV_CHAN_NONE, // reserved
664  [33] = AV_CHAN_NONE, // reserved
665  [34] = AV_CHAN_NONE, // reserved
666  [35] = AV_CHAN_NONE, // reserved
667 
668  [36] = AV_CHAN_NONE, // low frequency enhancement 3
669  [37] = AV_CHAN_NONE, // left edge of screen
670  [38] = AV_CHAN_NONE, // right edge of screen
671  [39] = AV_CHAN_NONE, // half-way between centre of screen and left edge of screen
672  [40] = AV_CHAN_NONE, // half-way between centre of screen and right edge of screen
673  [41] = AV_CHAN_NONE, // left back surround
674  [42] = AV_CHAN_NONE, // right back surround
675 
676  // 43 - 125: reserved
677  // 126: explicit position
678  // 127: unknown /undefined
679 };
680 
681 int ff_mov_get_channel_config_from_layout(const AVChannelLayout *layout, int *config)
682 {
683  // Set default value which means any setup in 23001-8
684  *config = 0;
685  for (int i = 0; iso_ch_layout_map[i].tag & 0xffff; i += 1 + (iso_ch_layout_map[i].tag & 0xffff)) {
686  if (is_layout_valid_for_tag(layout, iso_ch_layout_map[i].tag, &iso_ch_layout_map[i])) {
687  *config = iso_ch_layout_map[i].tag >> 16;
688  break;
689  }
690  }
691 
692  return 0;
693 }
694 
695 int ff_mov_get_channel_layout_from_config(int config, AVChannelLayout *layout, uint64_t omitted_channel_map)
696 {
697  if (config > 0) {
698  uint32_t layout_tag;
699  int nb_omitted_channels = av_popcount64(omitted_channel_map);
700 
701  if (layout->nb_channels <= 0 || layout->nb_channels > UINT16_MAX - nb_omitted_channels)
702  return AVERROR_INVALIDDATA;
703 
704  layout_tag = (config << 16) | (layout->nb_channels + nb_omitted_channels);
705  return mov_get_channel_layout(layout, layout_tag, omitted_channel_map, iso_ch_layout_map);
706  }
707  return 1;
708 }
709 
710 int ff_mov_get_channel_positions_from_layout(const AVChannelLayout *layout,
711  uint8_t *position, int position_num)
712 {
713  enum AVChannel channel;
714 
715  if (position_num < layout->nb_channels)
716  return AVERROR(EINVAL);
717 
718  for (int i = 0; i < layout->nb_channels; i++) {
719  position[i] = 127;
720  channel = av_channel_layout_channel_from_index(layout, i);
721  if (channel == AV_CHAN_NONE)
722  return AVERROR(EINVAL);
723 
724  for (int j = 0; j < FF_ARRAY_ELEMS(iso_channel_position); j++) {
725  if (iso_channel_position[j] == channel) {
726  position[i] = j;
727  break;
728  }
729  }
730  if (position[i] == 127)
731  return AVERROR(EINVAL);
732  }
733 
734  return 0;
735 }
736 
737 int ff_mov_read_chnl(AVFormatContext *s, AVIOContext *pb, AVStream *st)
738 {
739  int stream_structure = avio_r8(pb);
740  int ret;
741 
742  // stream carries channels
743  if (stream_structure & 1) {
744  int layout = avio_r8(pb);
745 
746  av_log(s, AV_LOG_TRACE, "'chnl' layout %d\n", layout);
747  if (!layout) {
748  AVChannelLayout tmp = { 0 }, *ch_layout = &st->codecpar->ch_layout;
749  int nb_channels = ch_layout->nb_channels;
750 
751  ret = av_channel_layout_custom_init(&tmp, nb_channels);
752  if (ret < 0)
753  return ret;
754 
755  for (int i = 0; i < nb_channels; i++) {
756  int speaker_pos = avio_r8(pb);
757  enum AVChannel channel;
758 
759  if (speaker_pos == 126) // explicit position
760  avio_skip(pb, 3); // azimuth, elevation
761 
762  if (speaker_pos >= FF_ARRAY_ELEMS(iso_channel_position))
763  channel = AV_CHAN_NONE;
764  else
765  channel = iso_channel_position[speaker_pos];
766 
767  if (channel == AV_CHAN_NONE) {
768  av_log(s, AV_LOG_WARNING, "speaker position %d is not implemented\n", speaker_pos);
769  channel = AV_CHAN_UNKNOWN;
770  }
771 
772  tmp.u.map[i].id = channel;
773  }
774 
775  ret = av_channel_layout_retype(&tmp, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
776  if (ret < 0)
777  return ret;
778 
779  av_channel_layout_uninit(ch_layout);
780  *ch_layout = tmp;
781  } else {
782  uint64_t omitted_channel_map = avio_rb64(pb);
783  ret = ff_mov_get_channel_layout_from_config(layout, &st->codecpar->ch_layout, omitted_channel_map);
784  if (ret < 0)
785  return ret;
786  }
787  }
788 
789  // stream carries objects
790  if (stream_structure & 2) {
791  int obj_count = avio_r8(pb);
792  av_log(s, AV_LOG_TRACE, "'chnl' with object_count %d\n", obj_count);
793  }
794 
795  return 0;
796 }
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:338
c_Z
@ c_Z
Definition: mov_chan.c:68
c_R
@ c_R
Definition: mov_chan.c:37
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:358
iso_Rvr
@ iso_Rvr
Definition: mov_chan.c:96
AVChannelLayout::u
union AVChannelLayout::@503 u
Details about which channels are present in this layout.
AV_CODEC_ID_AC3
@ AV_CODEC_ID_AC3
Definition: codec_id.h:463
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
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:695
c_Rrt
@ c_Rrt
Definition: mov_chan.c:53
out
static 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
AV_CHAN_WIDE_LEFT
@ AV_CHAN_WIDE_LEFT
Definition: channel_layout.h:72
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
iso_Rsr
@ iso_Rsr
Definition: mov_chan.c:84
c_Lc
@ c_Lc
Definition: mov_chan.c:42
c_Rt
@ c_Rt
Definition: mov_chan.c:55
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_Lw
@ iso_Lw
Definition: mov_chan.c:99
R
#define R
Definition: huffyuv.h:44
AV_CODEC_ID_ALAC
@ AV_CODEC_ID_ALAC
Definition: codec_id.h:476
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
c_Y
@ c_Y
Definition: mov_chan.c:67
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
iso_Lss
@ iso_Lss
Definition: mov_chan.c:109
mov_codec_ch_layouts
static const struct @475 mov_codec_ch_layouts[]
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:468
AVChannelLayout::nb_channels
int nb_channels
Number of channels in this layout.
Definition: channel_layout.h:329
iso_Rsd
@ iso_Rsd
Definition: mov_chan.c:102
iso_LFE2
@ iso_LFE2
Definition: mov_chan.c:103
iso_Rvs
@ iso_Rvs
Definition: mov_chan.c:113
tf_sess_config.config
config
Definition: tf_sess_config.py:33
MOV_CH_LAYOUT_AC3_3_0
@ MOV_CH_LAYOUT_AC3_3_0
Definition: mov_chan.h:105
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
iso_Lsd
@ iso_Lsd
Definition: mov_chan.c:101
AV_CHAN_SURROUND_DIRECT_LEFT
@ AV_CHAN_SURROUND_DIRECT_LEFT
Definition: channel_layout.h:74
iso_Rv
@ iso_Rv
Definition: mov_chan.c:93
c_HI
@ c_HI
Definition: mov_chan.c:73
MOV_CH_LAYOUT_MPEG_5_0_A
@ MOV_CH_LAYOUT_MPEG_5_0_A
Definition: mov_chan.h:73
AV_CODEC_ID_PCM_S16BE
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:339
AV_CHAN_TOP_BACK_RIGHT
@ AV_CHAN_TOP_BACK_RIGHT
Definition: channel_layout.h:67
c_Lt
@ c_Lt
Definition: mov_chan.c:54
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
MOV_CH_LAYOUT_MONO
@ MOV_CH_LAYOUT_MONO
Definition: mov_chan.h:56
c_LFE1
@ c_LFE1
Definition: mov_chan.c:71
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:342
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:764
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
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
c_Lsd
@ c_Lsd
Definition: mov_chan.c:58
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
AV_CHAN_UNKNOWN
@ AV_CHAN_UNKNOWN
Channel contains data, but its position is unknown.
Definition: channel_layout.h:94
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_Rw
@ c_Rw
Definition: mov_chan.c:57
AV_CHAN_SIDE_RIGHT
@ AV_CHAN_SIDE_RIGHT
Definition: channel_layout.h:60
iso_Rw
@ iso_Rw
Definition: mov_chan.c:100
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
channels
channels
Definition: aptx.h:31
iso_Ts
@ iso_Ts
Definition: mov_chan.c:90
c_Rsd
@ c_Rsd
Definition: mov_chan.c:59
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
tmp
static uint8_t tmp[40]
Definition: aes_ctr.c:52
AV_CHAN_TOP_SIDE_LEFT
@ AV_CHAN_TOP_SIDE_LEFT
Definition: channel_layout.h:77
iso_Lvss
@ iso_Lvss
Definition: mov_chan.c:104
AV_CHAN_TOP_SIDE_RIGHT
@ AV_CHAN_TOP_SIDE_RIGHT
Definition: channel_layout.h:78
AVFormatContext
Format I/O context.
Definition: avformat.h:1263
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
iso_Lb
@ iso_Lb
Definition: mov_chan.c:107
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:767
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
iso_Rc
@ iso_Rc
Definition: mov_chan.c:86
MOV_CH_LAYOUT_MAP
#define MOV_CH_LAYOUT_MAP
Definition: mov_chan.c:145
c_Rrs
@ c_Rrs
Definition: mov_chan.c:41
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:911
CHLIST05
#define CHLIST05(_tag, _1, _2, _3, _4, _5)
Definition: mov_chan.c:129
mov_get_channel_id
static enum AVChannel mov_get_channel_id(uint32_t label)
Definition: mov_chan.c:408
iso_Lsr
@ iso_Lsr
Definition: mov_chan.c:83
AV_CHAN_BOTTOM_FRONT_RIGHT
@ AV_CHAN_BOTTOM_FRONT_RIGHT
Definition: channel_layout.h:81
iso_LFE
@ iso_LFE
Definition: mov_chan.c:82
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:710
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
iso_Ls
@ iso_Ls
Definition: mov_chan.c:88
MovChannelLayoutMap
Definition: mov_chan.c:116
c_LFE
@ c_LFE
Definition: mov_chan.c:39
AV_CHAN_FRONT_RIGHT_OF_CENTER
@ AV_CHAN_FRONT_RIGHT_OF_CENTER
Definition: channel_layout.h:57
c_L
@ c_L
Definition: mov_chan.c:36
c_Vhl
@ c_Vhl
Definition: mov_chan.c:48
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:462
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:681
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:733
c_Rc
@ c_Rc
Definition: mov_chan.c:43
AVIOContext
Bytestream IO Context.
Definition: avio.h:160
AV_CODEC_ID_PCM_S24LE
@ AV_CODEC_ID_PCM_S24LE
Definition: codec_id.h:350
iso_C
@ iso_C
Definition: mov_chan.c:81
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
i
#define i(width, name, range_min, range_max)
Definition: cbs_h264.c:63
CHLIST07
#define CHLIST07(_tag, _1, _2, _3, _4, _5, _6, _7)
Definition: mov_chan.c:131
iso_Cb
@ iso_Cb
Definition: mov_chan.c:106
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
c_Ls
@ c_Ls
Definition: mov_chan.c:45
AV_CHAN_SIDE_LEFT
@ AV_CHAN_SIDE_LEFT
Definition: channel_layout.h:59
iso_Lvs
@ iso_Lvs
Definition: mov_chan.c:112
iso_L
@ iso_L
Definition: mov_chan.c:79
MOV_CH_LAYOUT_MPEG_7_1_A
@ MOV_CH_LAYOUT_MPEG_7_1_A
Definition: mov_chan.h:82
iso_Rss
@ iso_Rss
Definition: mov_chan.c:110
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:606
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
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_Haptic
@ c_Haptic
Definition: mov_chan.c:75
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
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
c_Vhr
@ c_Vhr
Definition: mov_chan.c:50
iso_Lc
@ iso_Lc
Definition: mov_chan.c:85
iso_Rs
@ iso_Rs
Definition: mov_chan.c:89
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
c_Vhc
@ c_Vhc
Definition: mov_chan.c:49
AV_CODEC_ID_PCM_F64BE
@ AV_CODEC_ID_PCM_F64BE
Definition: codec_id.h:360
MOV_CH_LAYOUT_MPEG_6_1_A
@ MOV_CH_LAYOUT_MPEG_6_1_A
Definition: mov_chan.h:81
AV_CODEC_ID_PCM_S32BE
@ AV_CODEC_ID_PCM_S32BE
Definition: codec_id.h:347
CHLIST06
#define CHLIST06(_tag, _1, _2, _3, _4, _5, _6)
Definition: mov_chan.c:130
MOV_CH_LAYOUT_AC3_2_1_1
@ MOV_CH_LAYOUT_AC3_2_1_1
Definition: mov_chan.h:108
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
iso_Cs
@ iso_Cs
Definition: mov_chan.c:87
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
mov_chan.h
tag
uint32_t tag
Definition: movenc.c:2032
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:744
c_C
@ c_C
Definition: mov_chan.c:38
MOV_CH_LAYOUT_DVD_4
@ MOV_CH_LAYOUT_DVD_4
Definition: mov_chan.h:89
c_Rs
@ c_Rs
Definition: mov_chan.c:46
id
enum AVCodecID id
Definition: dts2pts.c:577
AV_CHAN_BACK_CENTER
@ AV_CHAN_BACK_CENTER
Definition: channel_layout.h:58
iso_Rb
@ iso_Rb
Definition: mov_chan.c:108
AV_CHAN_NONE
@ AV_CHAN_NONE
Invalid channel index.
Definition: channel_layout.h:49
c_X
@ c_X
Definition: mov_chan.c:69
channel_layout.h
AV_CHAN_LOW_FREQUENCY_2
@ AV_CHAN_LOW_FREQUENCY_2
Definition: channel_layout.h:76
c_Ts
@ c_Ts
Definition: mov_chan.c:47
AV_CHAN_TOP_BACK_LEFT
@ AV_CHAN_TOP_BACK_LEFT
Definition: channel_layout.h:65
c_VI
@ c_VI
Definition: mov_chan.c:74
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
c_Rls
@ c_Rls
Definition: mov_chan.c:40
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
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:321
MovChannelLayoutMap::id
enum AVChannel id
Definition: mov_chan.c:119
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:446
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
iso_channel_position
static enum AVChannel iso_channel_position[]
Definition: mov_chan.c:629
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:346
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:427
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
iso_Lvr
@ iso_Lvr
Definition: mov_chan.c:94
AV_CODEC_ID_PCM_U8
@ AV_CODEC_ID_PCM_U8
Definition: codec_id.h:343
CHLIST02
#define CHLIST02(_tag, _1, _2)
Definition: mov_chan.c:126
map
const VDPAUPixFmtMap * map
Definition: hwcontext_vdpau.c:71
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:361
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
c_Lw
@ c_Lw
Definition: mov_chan.c:56
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:55
iso_Cvr
@ iso_Cvr
Definition: mov_chan.c:95
iso_Cv
@ iso_Cv
Definition: mov_chan.c:92
AV_CHAN_TOP_FRONT_LEFT
@ AV_CHAN_TOP_FRONT_LEFT
Definition: channel_layout.h:62
c_Rlt
@ c_Rlt
Definition: mov_chan.c:51
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
c_Csd
@ c_Csd
Definition: mov_chan.c:72
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:737
AV_CODEC_ID_PCM_F32LE
@ AV_CODEC_ID_PCM_F32LE
Definition: codec_id.h:359
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
iso_Lv
@ iso_Lv
Definition: mov_chan.c:91
AV_CHAN_FRONT_LEFT
@ AV_CHAN_FRONT_LEFT
Definition: channel_layout.h:50
iso_Rvss
@ iso_Rvss
Definition: mov_chan.c:105
c_W
@ c_W
Definition: mov_chan.c:66
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:351
iso_R
@ iso_R
Definition: mov_chan.c:80
c_Cs
@ c_Cs
Definition: mov_chan.c:44
mov_ch_layouts_ac3
static enum MovChannelLayoutTag mov_ch_layouts_ac3[]
Definition: mov_chan.c:288
channel
channel
Definition: ebur128.h:39
c_LFE2
@ c_LFE2
Definition: mov_chan.c:60
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:529
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