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1//! Global registry of codec information.
2//!
3//! This module contains codec information from technical level that allows user to retrieve information about codec type and features without creating and invoking a decoder for such codec.
4use std::fmt;
5
6/// Codec types.
7#[derive(Debug,Clone,Copy,PartialEq)]
8#[allow(dead_code)]
9pub enum CodecType {
10 /// Video codec.
11 Video,
12 /// Audio codec.
13 Audio,
14 /// Subtitle codec.
15 Subtitles,
16 /// Some special codec (e.g. some event stream or separate timecodes stream).
17 Data,
18 /// Dummy codec.
19 None,
20}
21
22impl fmt::Display for CodecType {
23 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
24 match *self {
25 CodecType::Video => write!(f, "Video"),
26 CodecType::Audio => write!(f, "Audio"),
27 CodecType::Subtitles => write!(f, "Subtitles"),
28 CodecType::Data => write!(f, "Data"),
29 CodecType::None => write!(f, "-"),
30 }
31 }
32}
33
34/// Codec capability flag for intra-only codecs.
35pub const CODEC_CAP_INTRAONLY:u32 = 0x0001;
36/// Codec capability flag for lossless codecs.
37pub const CODEC_CAP_LOSSLESS:u32 = 0x0002;
38/// Codec capability flag for codecs with frame reordering.
39pub const CODEC_CAP_REORDER:u32 = 0x0004;
40/// Codec capability flag for codecs that can be both lossy and lossless.
41pub const CODEC_CAP_HYBRID:u32 = 0x0008;
42/// Codec capability flag for codecs with scalability features.
43pub const CODEC_CAP_SCALABLE:u32 = 0x0010;
44/// Codec capability flag for codecs with complex frame reordering.
45pub const CODEC_CAP_COMPLEX_REORDER:u32 = 0x0020;
46
47/// Codec description structure.
48#[derive(Clone)]
49pub struct CodecDescription {
50 /// Short codec name.
51 ///
52 /// Short codec name is used inside NihAV as the unique identifier.
53 pub name: &'static str,
54 /// Full codec name.
55 pub fname: &'static str,
56 /// Codec type.
57 pub ctype: CodecType,
58 /// Codec capabilities.
59 pub caps: u32,
60}
61
62impl CodecDescription {
63 /// Returns short codec name.
64 pub fn get_name(&self) -> &'static str { self.name }
65 /// Returns full codec name.
66 pub fn get_full_name(&self) -> &'static str { self.fname }
67 /// Returns codec type.
68 pub fn get_codec_type(&self) -> CodecType { self.ctype }
69 /// Reports whether the codec has only intra frames or not.
70 pub fn is_intraonly(&self) -> bool { (self.caps & CODEC_CAP_INTRAONLY) != 0 }
71 /// Reports whether the codec is lossless.
72 pub fn is_lossless(&self) -> bool { (self.caps & CODEC_CAP_LOSSLESS) != 0 }
73 /// Reports whether the codec requires frame reordering.
74 pub fn has_reorder(&self) -> bool { (self.caps & CODEC_CAP_REORDER) != 0 }
75 /// Reports whether the codec can be either lossless or lossy.
76 pub fn is_hybrid(&self) -> bool { (self.caps & CODEC_CAP_HYBRID) != 0 }
77 /// Reports whether codec supports scalability.
78 ///
79 /// Scalability means that codec can be decoded in reduced resolution by design.
80 pub fn is_scalable(&self) -> bool { (self.caps & CODEC_CAP_SCALABLE) != 0 }
81}
82
83impl fmt::Display for CodecDescription {
84 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
85 let mut out = self.fname.to_string();
86 if self.caps != 0 {
87 let mut capfmt = "".to_string();
88 if (self.caps & CODEC_CAP_INTRAONLY) != 0 {
89 capfmt = format!("{} Intra-only", capfmt);
90 }
91 if (self.caps & CODEC_CAP_LOSSLESS) != 0 {
92 capfmt = format!("{} Lossless", capfmt);
93 }
94 if (self.caps & CODEC_CAP_REORDER) != 0 {
95 capfmt = format!("{} Frame reorder", capfmt);
96 }
97 if (self.caps & CODEC_CAP_HYBRID) != 0 {
98 capfmt = format!("{} Can be lossy and lossless", capfmt);
99 }
100 if (self.caps & CODEC_CAP_SCALABLE) != 0 {
101 capfmt = format!("{} Scalable", capfmt);
102 }
103 out = format!("{} ({})", out, capfmt);
104 }
105 write!(f, "{}", out)
106 }
107}
108
109macro_rules! desc {
110 (video; $n:expr, $fn:expr) => ({
111 CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video,
112 caps: 0 }
113 });
114 (video; $n:expr, $fn:expr, $c:expr) => ({
115 CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video,
116 caps: $c }
117 });
118 (video-ll; $n:expr, $fn:expr) => ({
119 CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video,
120 caps: CODEC_CAP_LOSSLESS | CODEC_CAP_INTRAONLY }
121 });
122 (video-llp; $n:expr, $fn:expr) => ({
123 CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video,
124 caps: CODEC_CAP_LOSSLESS }
125 });
126 (video-im; $n:expr, $fn:expr) => ({
127 CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video,
128 caps: CODEC_CAP_INTRAONLY }
129 });
130 (video-modern; $n:expr, $fn:expr) => ({
131 CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video,
132 caps: CODEC_CAP_REORDER | CODEC_CAP_HYBRID }
133 });
134 (audio; $n:expr, $fn:expr) => ({
135 CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Audio,
136 caps: 0 }
137 });
138 (audio-ll; $n:expr, $fn:expr) => ({
139 CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Audio,
140 caps: CODEC_CAP_LOSSLESS | CODEC_CAP_INTRAONLY }
141 });
142 (audio-hyb; $n:expr, $fn:expr) => ({
143 CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Audio,
144 caps: CODEC_CAP_HYBRID }
145 });
146}
147
148/// Returns codec description for the provided codec short name if it is found.
149pub fn get_codec_description(name: &str) -> Option<&'static CodecDescription> {
150 CODEC_REGISTER.iter().find(|&reg| reg.name == name)
151}
152
153static CODEC_REGISTER: &[CodecDescription] = &[
154 desc!(audio-ll; "pcm", "PCM"),
155 desc!(audio; "alaw", "A-law PCM"),
156 desc!(audio; "ulaw", "mu-law PCM"),
157
158 desc!(video-im; "indeo1", "Intel Raw IF09"),
159 desc!(video; "indeo2", "Intel Indeo 2"),
160 desc!(video; "ima-rtv2", "Intel RTV 2 (Indeo 2)"),
161 desc!(video; "indeo3", "Intel Indeo 3"),
162 desc!(video; "indeo4", "Intel Indeo 4", CODEC_CAP_REORDER | CODEC_CAP_SCALABLE),
163 desc!(video; "indeo5", "Intel Indeo 5", CODEC_CAP_REORDER | CODEC_CAP_SCALABLE),
164 desc!(video; "indeo5s", "Intel Indeo 5 Scalable", CODEC_CAP_SCALABLE),
165 desc!(video; "intel263", "Intel I263", CODEC_CAP_REORDER),
166 desc!(video-im; "yv92", "Intel Indeo YVU9 Compressed"),
167 desc!(audio; "iac", "Intel Indeo audio"),
168 desc!(audio; "imc", "Intel Music Coder"),
169 desc!(audio; "dvi-adpcm", "Intel DVI ADPCM"),
170
171 desc!(video; "realvideo1", "Real Video 1"),
172 desc!(video; "realvideo2", "Real Video 2", CODEC_CAP_REORDER),
173 desc!(video; "realvideo3", "Real Video 3", CODEC_CAP_REORDER),
174 desc!(video; "realvideo4", "Real Video 4", CODEC_CAP_REORDER),
175 desc!(video; "realvideo6", "Real Video 6", CODEC_CAP_REORDER),
176 desc!(video; "clearvideo", "ClearVideo"),
177 desc!(video; "clearvideo_rm", "ClearVideo"),
178 desc!(audio; "ra14.4", "RealAudio 14.4"),
179 desc!(audio; "ra28.8", "RealAudio 28.8"),
180 desc!(audio; "cook", "RealAudio Cooker"),
181 desc!(audio; "ralf", "RealAudio Lossless"),
182 desc!(audio; "aac", "AAC"),
183 desc!(audio; "ac3", "ETSI TS 102 366"),
184 desc!(audio; "ac3-multi", "ETSI TS 102 366 (multiple frames)"),
185 desc!(audio; "atrac3", "Sony Atrac3"),
186 desc!(audio; "sipro", "Sipro Labs ADPCM"),
187
188
189 desc!(video-ll; "rawvideo", "Raw video data"),
190 desc!(video-ll; "rawvideo-ms", "Raw video data"),
191
192 desc!(video; "cinepak", "Cinepak"),
193
194 desc!(video-llp; "zmbv", "Zip Motion Blocks Video"),
195
196 desc!(video; "msvideo1", "MS Video 1"),
197 desc!(video; "msrle", "MS RLE"),
198 desc!(audio; "ms-adpcm", "MS ADPCM"),
199 desc!(audio; "ima-adpcm-ms", "IMA ADPCM (MS variant)"),
200
201 desc!(video; "qt-smc", "Apple Graphics"),
202 desc!(video; "qt-rle", "Apple Animation"),
203 desc!(video; "apple-video", "Apple video"),
204 desc!(video; "sorenson-video", "Sorenson Video"),
205 desc!(video; "sorenson-video3", "Sorenson Video 3", CODEC_CAP_REORDER),
206 desc!(audio-ll; "alac", "Apple Lossless Audio Codec"),
207 desc!(audio; "mace-3", "MACE 3:1"),
208 desc!(audio; "mace-6", "MACE 6:1"),
209 desc!(audio; "ima-adpcm-qt", "IMA ADPCM (Apple variant)"),
210 desc!(audio; "qdesign-music", "QDesign Music"),
211 desc!(audio; "qdesign-music2", "QDesign Music v2"),
212 desc!(audio; "qualcomm-purevoice", "Qualcomm PureVoice"),
213
214 desc!(video-ll; "arm_rawvideo", "Acorn Replay Movie raw video formats"),
215 desc!(audio; "arm_rawaudio", "Acorn Replay Movie raw audio formats"),
216 desc!(video; "movinglines", "Acorn Moving Lines"),
217 desc!(video; "movingblocks", "Acorn Moving Blocks"),
218 desc!(video; "movingblockshq", "Acorn Moving Blocks HQ"),
219 desc!(video; "supermovingblocks", "Acorn Super Moving Blocks"),
220 desc!(video; "linepack", "Henrik Pedersen's LinePack"),
221 desc!(video; "movie16_3", "Henrik Pedersen's Movie 16:3"),
222 desc!(video; "escape-any", "wrapper for Eidos Escape codecs"),
223 desc!(video; "escape100", "Eidos Escape 100"),
224 desc!(video; "escape102", "Eidos Escape 102"),
225 desc!(video; "escape122", "Eidos Escape 122"),
226 desc!(video; "escape124", "Eidos Escape 124"),
227 desc!(video; "escape130", "Eidos Escape 130"),
228 desc!(audio; "escape-adpcm", "Eidos Escape ADPCM"),
229 desc!(video-llp; "euclid", "Iota Euclid / The Complete Animation"),
230 desc!(audio; "iota-sound", "IotaSound"),
231
232 desc!(video; "truemotion1", "TrueMotion 1"),
233 desc!(video-im; "truemotionrt", "TrueMotion RT"),
234 desc!(video; "truemotion2", "TrueMotion 2"),
235 desc!(video; "truemotion2x", "TrueMotion 2X"),
236 desc!(video; "vp3", "VP3"),
237 desc!(video; "vp4", "VP4"),
238 desc!(video; "vp5", "VP5"),
239 desc!(video; "vp6", "VP6"),
240 desc!(video; "vp6f", "VP6 (in Flash)"),
241 desc!(video; "vp6a", "VP6 with alpha"),
242 desc!(video; "vp7", "VP7"),
243 desc!(video; "vp8", "VP8"),
244 desc!(video; "vp9", "VP9"),
245 desc!(audio; "adpcm-dk3", "Duck DK3 ADPCM"),
246 desc!(audio; "adpcm-dk4", "Duck DK4 ADPCM"),
247 desc!(audio; "on2avc-500", "On2 AVC"),
248 desc!(audio; "on2avc-501", "On2 AVC"),
249
250 desc!(video; "flv263", "Sorenson H.263"),
251 desc!(video-llp; "flashsv", "Flash Screen Video"),
252 desc!(video-llp; "flashsv2", "Flash Screen Video 2"),
253 desc!(audio; "asao", "N*llym*s*r ASAO"),
254 desc!(audio; "flv-adpcm", "Flash ADPCM"),
255
256 desc!(audio; "mp1", "MPEG Audio Layer I"),
257 desc!(audio; "mp2", "MPEG Audio Layer II"),
258 desc!(audio; "mp3", "MPEG Audio Layer III"),
259 desc!(audio; "mp3-multi", "MPEG Audio Layer III (multiple frames)"),
260 desc!(audio; "speex", "Speex"),
261
262 desc!(video; "gdv-video", "Gremlin Digital Video - video"),
263 desc!(audio; "gdv-audio", "Gremlin Digital Video - audio"),
264 desc!(video-im; "arxel-video", "Arxel Tribe Video"),
265 desc!(video; "beam-fcp", "Beam Software Animation"),
266 desc!(video; "beam-video", "Beam Software Video"),
267 desc!(video; "bmv-video", "BMV video"),
268 desc!(audio; "bmv-audio", "BMV audio"),
269 desc!(video; "bmv3-video", "DW Noir BMV video"),
270 desc!(audio; "bmv3-audio", "DW Noir BMV audio"),
271 desc!(video; "dp-sga", "Digital Pictures SGA video"),
272 desc!(video; "fable-imax", "Fable IMAX video"),
273 desc!(video; "fst-video", "FutureVision video"),
274 desc!(audio; "fst-audio", "FutureVision audio"),
275 desc!(video; "hl-fmv-video", "Highlander FMV video"),
276 desc!(video-llp; "ipma", "Imagination Pilots Matte Animation"),
277 desc!(video-llp; "ipma2", "Imagination Pilots Matte Animation v2"),
278 desc!(video; "kmvc", "Karl Morton's Video Codec"),
279 desc!(video; "legend-q-video", "Legend Entertainment Q video"),
280 desc!(video; "midivid", "MidiVid"),
281 desc!(video; "midivid3", "MidiVid 3"),
282 desc!(video-ll; "midivid-ll", "MidiVid Lossless"),
283 desc!(video-ll; "rbt-video", "Sierra Robot video"),
284 desc!(audio; "rbt-audio", "Sierra Robot audio"),
285 desc!(video; "seq-video", "Sierra Sequence video"),
286 desc!(video; "smushv1", "SMUSH Video paletted"),
287 desc!(video; "smushv2", "SMUSH Video 16-bit"),
288 desc!(video; "smush-iact", "SMUSH IACT Audio"),
289 desc!(video; "smush-vima", "SMUSH VIMA Audio"),
290 desc!(video; "vmd-video", "VMD video"),
291 desc!(audio; "vmd-audio", "VMD audio"),
292 desc!(video; "vxvideo", "Actimagine Vx"),
293 desc!(audio; "vxaudio", "Actimagine Sx"),
294
295 desc!(video; "smacker-video", "Smacker video"),
296 desc!(audio; "smacker-audio", "Smacker audio"),
297 desc!(video; "bink-video", "Bink video"),
298 desc!(video; "bink2-video", "Bink2 video"),
299 desc!(audio; "bink-audio-dct", "Bink audio (DCT)"),
300 desc!(audio; "bink-audio-rdft", "Bink audio (RDFT)"),
301
302 desc!(audio; "lhst15f8", "L&H StreamTalk 15kbps at 8 kHz"),
303 desc!(audio; "lhst250f11", "L&H StreamTalk 25kbps at 11 kHz"),
304 desc!(audio; "lhst500f22", "L&H StreamTalk 50kpbs at 22 kHz"),
305 desc!(audio; "lhst48", "L&H StreamTalk CELP Codec 4.8kbps at 8 kHz"),
306
307 desc!(video; "vivo1", "VivoActive Video 1.0"),
308 desc!(video; "vivo2", "VivoActive Video 2.0", CODEC_CAP_REORDER),
309 desc!(audio; "g723.1", "ITU G.723.1"),
310 desc!(audio; "siren", "Polycom Siren"),
311
312 desc!(audio-ll; "ape", "Monkey's Audio"),
313 desc!(audio-ll; "flac", "Free Lossless Audio Codec"),
314 desc!(audio-ll; "tta", "True Audio codec"),
315 desc!(audio-hyb; "wavpack", "WavPack"),
316
317 desc!(video-ll; "gif", "GIF"),
318 desc!(video-im; "jpeg", "JPEG"),
319 desc!(video; "h264", "ITU H.264", CODEC_CAP_COMPLEX_REORDER | CODEC_CAP_HYBRID),
320 desc!(video-modern; "mpeg4asp", "MPEG-4 ASP"),
321
322 desc!(video; "fif", "Fractal Codec"),
323
324 desc!(video-im; "mvi0", "MotionPixels (MVI)"),
325 desc!(video; "mvi1", "MotionPixels 1"),
326 desc!(video; "mvi2", "MotionPixels 2"),
327
328 desc!(video; "gryphon-arbc-vfw", "Gryphon Software ARBC in AVI"),
329 desc!(video; "gryphon-arbc-qt", "Gryphon Software ARBC in MOV"),
330
331 desc!(video-im; "mwv1", "Aware MotionWavelets"),
332
333 desc!(video-llp; "pivideo", "PI-Video"),
334
335 desc!(video-im; "pgvv", "Radius Studio Video"),
336
337 desc!(video-llp; "qpeg-dvc", "QPEG video in DVC"),
338
339 desc!(video; "teal-video", "TealMovie video"),
340 desc!(audio; "teal-audio", "TealMovie audio"),
341];
342
343static AVI_VIDEO_CODEC_REGISTER: &[(&[u8;4], &str)] = &[
344 (&[1, 0, 0, 0], "msrle"),
345 (&[2, 0, 0, 0], "msrle"),
346
347 (b"CRAM", "msvideo1"),
348 (b"MSVC", "msvideo1"),
349 (b"WHAM", "msvideo1"),
350
351 (b"MJPG", "jpeg"),
352
353 (b"IF09", "indeo1"),
354 (b"RT21", "indeo2"),
355 (b"IV31", "indeo3"),
356 (b"IV32", "indeo3"),
357 (b"IV41", "indeo4"),
358 (b"IV50", "indeo5"),
359 (b"I263", "intel263"),
360 (b"YV92", "yv92"),
361
362 (b"UCOD", "clearvideo"),
363 (b"cvid", "cinepak"),
364 (b"savi", "cinepak"),
365 (b"ZMBV", "zmbv"),
366
367 (b"Ipma", "ipma"),
368 (b"Ip20", "ipma2"),
369 (b"KMVC", "kmvc"),
370
371 (b"MVDV", "midivid"),
372 (b"MV30", "midivid3"),
373 (b"MVLZ", "midivid-ll"),
374
375 (b"tmot", "truemotion1"),
376 (b"DUCK", "truemotion1"),
377 (b"TR20", "truemotionrt"),
378 (b"TM20", "truemotion2"),
379 (b"TM2A", "truemotion2x"),
380 (b"TM2X", "truemotion2x"),
381 (b"VP30", "vp3"),
382 (b"VP31", "vp3"),
383 (b"VP40", "vp4"),
384 (b"VP50", "vp5"),
385 (b"VP60", "vp6"),
386 (b"VP61", "vp6"),
387 (b"VP62", "vp6"),
388 (b"VP6A", "vp6a"),
389 (b"VP70", "vp7"),
390
391 (b"MWV1", "mwv1"),
392
393 (b"MVI1", "mvi1"),
394
395 (b"FVF1", "fif"),
396
397 (b"pivc", "pivideo"),
398
399 (b"ARBC", "gryphon-arbc-vfw"),
400 (b"azpr", "apple-video"),
401 (b"PGVV", "pgvv"),
402
403 (b"ESCP", "escape-any"),
404
405 (b"VXS1", "vxvideo"),
406
407 (b"DX50", "mpeg4asp"),
408 (b"DIVX", "mpeg4asp"),
409 (b"XVID", "mpeg4asp"),
410];
411
412static WAV_CODEC_REGISTER: &[(u16, &str)] = &[
413 (0x0000, "unknown"),
414 (0x0001, "pcm"),
415 (0x0002, "ms-adpcm"),
416 (0x0003, "pcm"),
417 (0x0006, "alaw"),
418 (0x0007, "ulaw"),
419 (0x0011, "ima-adpcm-ms"),
420 (0x0055, "mp3-multi"),
421 (0x0061, "adpcm-dk4"),
422 (0x0062, "adpcm-dk3"),
423 (0x0401, "imc"),
424 (0x0402, "iac"),
425 (0x0500, "on2avc-500"),
426 (0x0501, "on2avc-501"),
427 (0x2000, "ac3-multi"),
428];
429
430static MOV_VIDEO_CODEC_REGISTER: &[(&[u8;4], &str)] = &[
431 (b"cvid", "cinepak"),
432 (b"jpeg", "jpeg"),
433 (b"raw ", "rawvideo"),
434 //(b"Yuv2", "raw"),
435 (b"smc ", "qt-smc"),
436 (b"rle ", "qt-rle"),
437 (b"rpza", "apple-video"),
438 (b"kpcd", "kodak-photocd"),
439 //(b"mpeg", "mpeg-video"),
440 (b"mjpa", "mjpeg-a"),
441 (b"mjpb", "mjpeg-b"),
442 (b"svqi", "sorenson-video"),
443 (b"SVQ1", "sorenson-video"),
444 (b"svq3", "sorenson-video3"),
445 (b"SVQ3", "sorenson-video3"),
446
447 (b"rt21", "indeo2"),
448 (b"IV31", "indeo3"),
449 (b"IV32", "indeo3"),
450 (b"iv32", "indeo3"),
451
452 (b"arbc", "gryphon-arbc-qt"),
453 (b"UCOD", "clearvideo"),
454
455 (b"VP30", "vp3"),
456 (b"VP31", "vp3"),
457
458 (b"ESCP", "escape-any"),
459
460 (b"mp4v", "mpeg4asp"),
461 (b"avc1", "h264"),
462];
463
464static MOV_AUDIO_CODEC_REGISTER: &[(&[u8;4], &str)] = &[
465 (b"NONE", "pcm"),
466 (b"raw ", "pcm"),
467 (b"twos", "pcm"),
468 (b"sowt", "pcm"),
469 (b"fl32", "pcm"),
470 (b"fl64", "pcm"),
471 (b"in24", "pcm"),
472 (b"in32", "pcm"),
473 (b"MAC3", "mace-3"),
474 (b"MAC6", "mace-6"),
475 (b"ima4", "ima-adpcm-qt"),
476 (b"ulaw", "ulaw"),
477 (b"alaw", "alaw"),
478 (b"dvca", "dv-audio"),
479 (b"QDMC", "qdesign-music"),
480 (b"QDM2", "qdesign-music2"),
481 (b"Qclp", "qualcomm-purevoice"),
482 //(b".mp3", "mpeg-layer3"),
483
484 (b"mp4a", "aac"),
485
486 (b"alac", "alac"),
487];
488
489/// Returns video codec short name for provided FOURCC (used in AVI format).
490pub fn find_codec_from_avi_fourcc(fcc: &[u8;4]) -> Option<&'static str> {
491 for (fourcc, name) in AVI_VIDEO_CODEC_REGISTER.iter() {
492 if *fourcc == fcc { return Some(name); }
493 }
494 None
495}
496
497/// Returns FOURCC (used in AVI format) for provided codec name.
498pub fn find_avi_fourcc(codecname: &str) -> Option<[u8; 4]> {
499 for (fourcc, name) in AVI_VIDEO_CODEC_REGISTER.iter() {
500 if *name == codecname { return Some(**fourcc); }
501 }
502 None
503}
504
505/// Returns known audio codec short name for provided TWOCC (used in WAV and AVI format).
506pub fn find_codec_from_wav_twocc(tcc: u16) -> Option<&'static str> {
507 for (twocc, name) in WAV_CODEC_REGISTER.iter() {
508 if *twocc == tcc { return Some(name); }
509 }
510 None
511}
512
513/// Returns TWOCC (used in WAV and AVI format for provided codec name.
514pub fn find_wav_twocc(codecname: &str) -> Option<u16> {
515 for (twocc, name) in WAV_CODEC_REGISTER.iter() {
516 if *name == codecname { return Some(*twocc); }
517 }
518 None
519}
520
521/// Returns video codec short name for provided FOURCC (used in MOV format).
522pub fn find_codec_from_mov_video_fourcc(fcc: &[u8;4]) -> Option<&'static str> {
523 for (fourcc, name) in MOV_VIDEO_CODEC_REGISTER.iter() {
524 if *fourcc == fcc { return Some(name); }
525 }
526 None
527}
528
529/// Returns known audio codec short name for provided FOURCC (used in MOV format).
530pub fn find_codec_from_mov_audio_fourcc(fcc: &[u8;4]) -> Option<&'static str> {
531 for (fourcc, name) in MOV_AUDIO_CODEC_REGISTER.iter() {
532 if *fourcc == fcc { return Some(name); }
533 }
534 None
535}
536
537#[cfg(test)]
538mod test {
539 use super::*;
540
541 #[test]
542 fn test_register() {
543 let c1 = find_codec_from_avi_fourcc(b"IV41").unwrap();
544 let c2 = find_codec_from_wav_twocc(0x401).unwrap();
545 println!("found {} and {}", c1, c2);
546 let cd1 = get_codec_description(c1).unwrap();
547 let cd2 = get_codec_description(c2).unwrap();
548 println!("got {} and {}", cd1, cd2);
549 }
550}
NihAV is a research multimedia framework